From 538d6830a0022b49b99695095d85e567b0c86e71 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Sun, 30 Jul 2023 23:47:53 +0800
Subject: ...

---
 FrontEnd/src/pages/timeline/TimelinePostView.tsx | 149 +++++++++++++++++++++++
 1 file changed, 149 insertions(+)
 create mode 100644 FrontEnd/src/pages/timeline/TimelinePostView.tsx

(limited to 'FrontEnd/src/pages/timeline/TimelinePostView.tsx')

diff --git a/FrontEnd/src/pages/timeline/TimelinePostView.tsx b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
new file mode 100644
index 00000000..f7aec169
--- /dev/null
+++ b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
@@ -0,0 +1,149 @@
+import * as React from "react";
+import classnames from "classnames";
+
+import { getHttpTimelineClient, HttpTimelinePostInfo } from "@/http/timeline";
+
+import { pushAlert } from "@/services/alert";
+
+import { useClickOutside } from "@/utilities/hooks";
+
+import UserAvatar from "@/views/common/user/UserAvatar";
+import Card from "@/views/common/Card";
+import FlatButton from "@/views/common/button/FlatButton";
+import ConfirmDialog from "@/views/common/dialog/ConfirmDialog";
+import TimelineLine from "./TimelineLine";
+import TimelinePostContentView from "./TimelinePostContentView";
+import IconButton from "@/views/common/button/IconButton";
+
+export interface TimelinePostViewProps {
+  post: HttpTimelinePostInfo;
+  className?: string;
+  style?: React.CSSProperties;
+  cardStyle?: React.CSSProperties;
+  onChanged: (post: HttpTimelinePostInfo) => void;
+  onDeleted: () => void;
+}
+
+const TimelinePostView: React.FC<TimelinePostViewProps> = (props) => {
+  const { post, className, style, cardStyle, onChanged, onDeleted } = props;
+
+  const [operationMaskVisible, setOperationMaskVisible] =
+    React.useState<boolean>(false);
+  const [dialog, setDialog] = React.useState<
+    "delete" | "changeproperty" | null
+  >(null);
+
+  const [maskElement, setMaskElement] = React.useState<HTMLElement | null>(
+    null,
+  );
+
+  useClickOutside(maskElement, () => setOperationMaskVisible(false));
+
+  const cardRef = React.useRef<HTMLDivElement>(null);
+  React.useEffect(() => {
+    const cardIntersectionObserver = new IntersectionObserver(([e]) => {
+      if (e.intersectionRatio > 0) {
+        if (cardRef.current != null) {
+          cardRef.current.style.animationName = "timeline-post-enter";
+        }
+      }
+    });
+    if (cardRef.current) {
+      cardIntersectionObserver.observe(cardRef.current);
+    }
+
+    return () => {
+      cardIntersectionObserver.disconnect();
+    };
+  }, []);
+
+  return (
+    <div
+      id={`timeline-post-${post.id}`}
+      className={classnames("timeline-item", className)}
+      style={style}
+    >
+      <TimelineLine center="node" />
+      <Card
+        containerRef={cardRef}
+        className="timeline-item-card enter-animation"
+        style={cardStyle}
+      >
+        {post.editable ? (
+          <IconButton
+            icon="chevron-down"
+            color="primary"
+            className="cru-float-right"
+            onClick={(e) => {
+              setOperationMaskVisible(true);
+              e.stopPropagation();
+            }}
+          />
+        ) : null}
+        <div className="timeline-item-header">
+          <span className="me-2">
+            <span>
+              <UserAvatar
+                username={post.author.username}
+                className="timeline-avatar me-1"
+              />
+              <small className="text-dark me-2">{post.author.nickname}</small>
+              <small className="text-secondary white-space-no-wrap">
+                {new Date(post.time).toLocaleTimeString()}
+              </small>
+            </span>
+          </span>
+        </div>
+        <div className="timeline-content">
+          <TimelinePostContentView post={post} />
+        </div>
+        {operationMaskVisible ? (
+          <div
+            ref={setMaskElement}
+            className="timeline-post-item-options-mask"
+            onClick={() => {
+              setOperationMaskVisible(false);
+            }}
+          >
+            <FlatButton
+              text="changeProperty"
+              onClick={(e) => {
+                setDialog("changeproperty");
+                e.stopPropagation();
+              }}
+            />
+            <FlatButton
+              text="delete"
+              color="danger"
+              onClick={(e) => {
+                setDialog("delete");
+                e.stopPropagation();
+              }}
+            />
+          </div>
+        ) : null}
+      </Card>
+      <ConfirmDialog
+        title="timeline.post.deleteDialog.title"
+        body="timeline.post.deleteDialog.prompt"
+        open={dialog === "delete"}
+        onClose={() => {
+          setDialog(null);
+          setOperationMaskVisible(false);
+        }}
+        onConfirm={() => {
+          void getHttpTimelineClient()
+            .deletePost(post.timelineOwnerV2, post.timelineNameV2, post.id)
+            .then(onDeleted, () => {
+              pushAlert({
+                type: "danger",
+                message: "timeline.deletePostFailed",
+              });
+            });
+        }}
+      />
+    </div>
+  );
+};
+
+export default TimelinePostView;
-- 
cgit v1.2.3


From 710ff9d3d2e55113798c39b0595f8f71b12091ef Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Mon, 31 Jul 2023 21:16:27 +0800
Subject: ...

---
 FrontEnd/src/pages/timeline/TimelinePostView.css |  30 +++++++
 FrontEnd/src/pages/timeline/TimelinePostView.tsx | 102 ++++++++---------------
 FrontEnd/src/views/common/dialog/index.ts        |  14 +++-
 3 files changed, 78 insertions(+), 68 deletions(-)
 create mode 100644 FrontEnd/src/pages/timeline/TimelinePostView.css

(limited to 'FrontEnd/src/pages/timeline/TimelinePostView.tsx')

diff --git a/FrontEnd/src/pages/timeline/TimelinePostView.css b/FrontEnd/src/pages/timeline/TimelinePostView.css
new file mode 100644
index 00000000..2cd8cd6b
--- /dev/null
+++ b/FrontEnd/src/pages/timeline/TimelinePostView.css
@@ -0,0 +1,30 @@
+.timeline-post {
+  position: relative;
+  padding: 0.5em;
+}
+
+.timeline-post-card {
+  position: relative;
+  padding: 0.5em 0.5em 0.5em 4em;
+}
+
+.timeline-post-header {
+  display: flex;
+  align-items: center;
+}
+
+.timeline-post-author-avatar {
+  border-radius: 50%;
+  width: 2em;
+  height: 2em;
+}
+
+.timeline-post-delete-button {
+  position: absolute;
+  right: 0;
+  bottom: 0;
+}
+
+.timeline-post-content {
+  white-space: pre-line;
+}
\ No newline at end of file
diff --git a/FrontEnd/src/pages/timeline/TimelinePostView.tsx b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
index f7aec169..bdd2e3ef 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostView.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
@@ -1,5 +1,5 @@
-import * as React from "react";
-import classnames from "classnames";
+import { useState } from "react";
+import classNames from "classnames";
 
 import { getHttpTimelineClient, HttpTimelinePostInfo } from "@/http/timeline";
 
@@ -8,6 +8,7 @@ import { pushAlert } from "@/services/alert";
 import { useClickOutside } from "@/utilities/hooks";
 
 import UserAvatar from "@/views/common/user/UserAvatar";
+import { useDialog } from "@/views/common/dialog";
 import Card from "@/views/common/Card";
 import FlatButton from "@/views/common/button/FlatButton";
 import ConfirmDialog from "@/views/common/dialog/ConfirmDialog";
@@ -15,92 +16,68 @@ import TimelineLine from "./TimelineLine";
 import TimelinePostContentView from "./TimelinePostContentView";
 import IconButton from "@/views/common/button/IconButton";
 
+import "./TimelinePostView.css";
+
 export interface TimelinePostViewProps {
   post: HttpTimelinePostInfo;
   className?: string;
-  style?: React.CSSProperties;
-  cardStyle?: React.CSSProperties;
   onChanged: (post: HttpTimelinePostInfo) => void;
   onDeleted: () => void;
 }
 
-const TimelinePostView: React.FC<TimelinePostViewProps> = (props) => {
-  const { post, className, style, cardStyle, onChanged, onDeleted } = props;
+export function TimelinePostView(props: TimelinePostViewProps) {
+  const { post, className, onDeleted } = props;
 
   const [operationMaskVisible, setOperationMaskVisible] =
-    React.useState<boolean>(false);
-  const [dialog, setDialog] = React.useState<
-    "delete" | "changeproperty" | null
-  >(null);
+    useState<boolean>(false);
 
-  const [maskElement, setMaskElement] = React.useState<HTMLElement | null>(
-    null,
-  );
+  const { switchDialog, dialogPropsMap } = useDialog(["delete"], {
+    onClose: {
+      delete: () => {
+        setOperationMaskVisible(false);
+      },
+    },
+  });
 
+  const [maskElement, setMaskElement] = useState<HTMLElement | null>(null);
   useClickOutside(maskElement, () => setOperationMaskVisible(false));
 
-  const cardRef = React.useRef<HTMLDivElement>(null);
-  React.useEffect(() => {
-    const cardIntersectionObserver = new IntersectionObserver(([e]) => {
-      if (e.intersectionRatio > 0) {
-        if (cardRef.current != null) {
-          cardRef.current.style.animationName = "timeline-post-enter";
-        }
-      }
-    });
-    if (cardRef.current) {
-      cardIntersectionObserver.observe(cardRef.current);
-    }
-
-    return () => {
-      cardIntersectionObserver.disconnect();
-    };
-  }, []);
-
   return (
     <div
       id={`timeline-post-${post.id}`}
-      className={classnames("timeline-item", className)}
-      style={style}
+      className={classNames("timeline-post cru-primary", className)}
     >
       <TimelineLine center="node" />
-      <Card
-        containerRef={cardRef}
-        className="timeline-item-card enter-animation"
-        style={cardStyle}
-      >
-        {post.editable ? (
+      <Card className="timeline-post-card">
+        {post.editable && (
           <IconButton
             icon="chevron-down"
-            color="primary"
-            className="cru-float-right"
+            className="timeline-post-edit-button"
             onClick={(e) => {
               setOperationMaskVisible(true);
               e.stopPropagation();
             }}
           />
-        ) : null}
-        <div className="timeline-item-header">
-          <span className="me-2">
-            <span>
-              <UserAvatar
-                username={post.author.username}
-                className="timeline-avatar me-1"
-              />
-              <small className="text-dark me-2">{post.author.nickname}</small>
-              <small className="text-secondary white-space-no-wrap">
-                {new Date(post.time).toLocaleTimeString()}
-              </small>
-            </span>
-          </span>
+        )}
+        <div className="timeline-post-header">
+          <UserAvatar
+            username={post.author.username}
+            className="timeline-post-author-avatar"
+          />
+          <small className="timeline-post-author-nickname">
+            {post.author.nickname}
+          </small>
+          <small className="timeline-post-time">
+            {new Date(post.time).toLocaleTimeString()}
+          </small>
         </div>
-        <div className="timeline-content">
+        <div className="timeline-post-content">
           <TimelinePostContentView post={post} />
         </div>
         {operationMaskVisible ? (
           <div
             ref={setMaskElement}
-            className="timeline-post-item-options-mask"
+            className="timeline-post-options-mask"
             onClick={() => {
               setOperationMaskVisible(false);
             }}
@@ -108,7 +85,6 @@ const TimelinePostView: React.FC<TimelinePostViewProps> = (props) => {
             <FlatButton
               text="changeProperty"
               onClick={(e) => {
-                setDialog("changeproperty");
                 e.stopPropagation();
               }}
             />
@@ -116,7 +92,7 @@ const TimelinePostView: React.FC<TimelinePostViewProps> = (props) => {
               text="delete"
               color="danger"
               onClick={(e) => {
-                setDialog("delete");
+                switchDialog("delete");
                 e.stopPropagation();
               }}
             />
@@ -126,11 +102,6 @@ const TimelinePostView: React.FC<TimelinePostViewProps> = (props) => {
       <ConfirmDialog
         title="timeline.post.deleteDialog.title"
         body="timeline.post.deleteDialog.prompt"
-        open={dialog === "delete"}
-        onClose={() => {
-          setDialog(null);
-          setOperationMaskVisible(false);
-        }}
         onConfirm={() => {
           void getHttpTimelineClient()
             .deletePost(post.timelineOwnerV2, post.timelineNameV2, post.id)
@@ -141,9 +112,10 @@ const TimelinePostView: React.FC<TimelinePostViewProps> = (props) => {
               });
             });
         }}
+        {...dialogPropsMap.delete}
       />
     </div>
   );
-};
+}
 
 export default TimelinePostView;
diff --git a/FrontEnd/src/views/common/dialog/index.ts b/FrontEnd/src/views/common/dialog/index.ts
index e37b9ed2..59f15791 100644
--- a/FrontEnd/src/views/common/dialog/index.ts
+++ b/FrontEnd/src/views/common/dialog/index.ts
@@ -18,14 +18,19 @@ type DialogPropsMap<D extends string> = DialogMap<
 
 export function useDialog<D extends string>(
   dialogs: D[],
-  initDialog?: D | null,
+  options?: {
+    initDialog?: D | null;
+    onClose?: {
+      [K in D]?: () => void;
+    };
+  },
 ): {
   dialog: D | null;
   switchDialog: (newDialog: D | null) => void;
   dialogPropsMap: DialogPropsMap<D>;
   createDialogSwitch: (newDialog: D | null) => () => void;
 } {
-  const [dialog, setDialog] = useState<D | null>(initDialog ?? null);
+  const [dialog, setDialog] = useState<D | null>(options?.initDialog ?? null);
 
   const [dialogKeys, setDialogKeys] = useState<DialogKeyMap<D>>(
     () => Object.fromEntries(dialogs.map((d) => [d, 0])) as DialogKeyMap<D>,
@@ -47,7 +52,10 @@ export function useDialog<D extends string>(
         {
           key: `${d}-${dialogKeys[d]}`,
           open: dialog === d,
-          onClose: () => switchDialog(null),
+          onClose: () => {
+            switchDialog(null);
+            options?.onClose?.[d]?.();
+          },
         },
       ]),
     ) as DialogPropsMap<D>,
-- 
cgit v1.2.3


From e6ccc0174a86a0ade240e6551228598cd81f984b Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Tue, 1 Aug 2023 00:29:35 +0800
Subject: ...

---
 FrontEnd/package.json                              |  2 +-
 FrontEnd/pnpm-lock.yaml                            | 35 +++++++-
 FrontEnd/src/pages/timeline/Timeline.css           | 95 +++++++---------------
 FrontEnd/src/pages/timeline/Timeline.tsx           | 77 ++++++------------
 FrontEnd/src/pages/timeline/TimelineCard.tsx       |  2 +-
 FrontEnd/src/pages/timeline/TimelineDateLabel.css  |  9 ++
 FrontEnd/src/pages/timeline/TimelineDateLabel.tsx  | 20 ++---
 FrontEnd/src/pages/timeline/TimelineEmptyItem.tsx  | 25 ------
 FrontEnd/src/pages/timeline/TimelineLine.tsx       | 51 ------------
 FrontEnd/src/pages/timeline/TimelineLoading.tsx    | 16 ----
 FrontEnd/src/pages/timeline/TimelinePostCard.css   |  9 ++
 FrontEnd/src/pages/timeline/TimelinePostCard.tsx   | 22 +++++
 .../src/pages/timeline/TimelinePostContainer.css   |  3 +
 .../src/pages/timeline/TimelinePostContainer.tsx   | 20 +++++
 FrontEnd/src/pages/timeline/TimelinePostEdit.tsx   |  6 +-
 .../src/pages/timeline/TimelinePostEditCard.tsx    | 31 -------
 .../src/pages/timeline/TimelinePostEditNoLogin.tsx | 18 ----
 FrontEnd/src/pages/timeline/TimelinePostList.css   | 10 +++
 FrontEnd/src/pages/timeline/TimelinePostList.tsx   | 76 +++++++++++++++++
 .../src/pages/timeline/TimelinePostListView.tsx    | 76 -----------------
 FrontEnd/src/pages/timeline/TimelinePostView.css   | 23 +++---
 FrontEnd/src/pages/timeline/TimelinePostView.tsx   | 20 ++---
 22 files changed, 265 insertions(+), 381 deletions(-)
 create mode 100644 FrontEnd/src/pages/timeline/TimelineDateLabel.css
 delete mode 100644 FrontEnd/src/pages/timeline/TimelineEmptyItem.tsx
 delete mode 100644 FrontEnd/src/pages/timeline/TimelineLine.tsx
 delete mode 100644 FrontEnd/src/pages/timeline/TimelineLoading.tsx
 create mode 100644 FrontEnd/src/pages/timeline/TimelinePostCard.css
 create mode 100644 FrontEnd/src/pages/timeline/TimelinePostCard.tsx
 create mode 100644 FrontEnd/src/pages/timeline/TimelinePostContainer.css
 create mode 100644 FrontEnd/src/pages/timeline/TimelinePostContainer.tsx
 delete mode 100644 FrontEnd/src/pages/timeline/TimelinePostEditCard.tsx
 delete mode 100644 FrontEnd/src/pages/timeline/TimelinePostEditNoLogin.tsx
 create mode 100644 FrontEnd/src/pages/timeline/TimelinePostList.css
 create mode 100644 FrontEnd/src/pages/timeline/TimelinePostList.tsx
 delete mode 100644 FrontEnd/src/pages/timeline/TimelinePostListView.tsx

(limited to 'FrontEnd/src/pages/timeline/TimelinePostView.tsx')

diff --git a/FrontEnd/package.json b/FrontEnd/package.json
index 56af818c..950670f4 100644
--- a/FrontEnd/package.json
+++ b/FrontEnd/package.json
@@ -12,8 +12,8 @@
     "check:fix": "pnpm run type-check && pnpm run lint:fix"
   },
   "dependencies": {
+    "@floating-ui/react-dom": "^2.0.1",
     "@microsoft/signalr": "^7.0.7",
-    "@popperjs/core": "^2.11.8",
     "axios": "^1.4.0",
     "bootstrap": "^5.3.0",
     "bootstrap-icons": "^1.10.5",
diff --git a/FrontEnd/pnpm-lock.yaml b/FrontEnd/pnpm-lock.yaml
index cad9a287..24e81c7c 100644
--- a/FrontEnd/pnpm-lock.yaml
+++ b/FrontEnd/pnpm-lock.yaml
@@ -5,12 +5,12 @@ settings:
   excludeLinksFromLockfile: false
 
 dependencies:
+  '@floating-ui/react-dom':
+    specifier: ^2.0.1
+    version: 2.0.1(react-dom@18.2.0)(react@18.2.0)
   '@microsoft/signalr':
     specifier: ^7.0.7
     version: 7.0.7
-  '@popperjs/core':
-    specifier: ^2.11.8
-    version: 2.11.8
   axios:
     specifier: ^1.4.0
     version: 1.4.0
@@ -239,6 +239,34 @@ packages:
     engines: {node: ^12.22.0 || ^14.17.0 || >=16.0.0}
     dev: true
 
+  /@floating-ui/core@1.4.1:
+    resolution: {integrity: sha512-jk3WqquEJRlcyu7997NtR5PibI+y5bi+LS3hPmguVClypenMsCY3CBa3LAQnozRCtCrYWSEtAdiskpamuJRFOQ==}
+    dependencies:
+      '@floating-ui/utils': 0.1.1
+    dev: false
+
+  /@floating-ui/dom@1.5.1:
+    resolution: {integrity: sha512-KwvVcPSXg6mQygvA1TjbN/gh///36kKtllIF8SUm0qpFj8+rvYrpvlYdL1JoA71SHpDqgSSdGOSoQ0Mp3uY5aw==}
+    dependencies:
+      '@floating-ui/core': 1.4.1
+      '@floating-ui/utils': 0.1.1
+    dev: false
+
+  /@floating-ui/react-dom@2.0.1(react-dom@18.2.0)(react@18.2.0):
+    resolution: {integrity: sha512-rZtAmSht4Lry6gdhAJDrCp/6rKN7++JnL1/Anbr/DdeyYXQPxvg/ivrbYvJulbRf4vL8b212suwMM2lxbv+RQA==}
+    peerDependencies:
+      react: '>=16.8.0'
+      react-dom: '>=16.8.0'
+    dependencies:
+      '@floating-ui/dom': 1.5.1
+      react: 18.2.0
+      react-dom: 18.2.0(react@18.2.0)
+    dev: false
+
+  /@floating-ui/utils@0.1.1:
+    resolution: {integrity: sha512-m0G6wlnhm/AX0H12IOWtK8gASEMffnX08RtKkCgTdHb9JpHKGloI7icFfLg9ZmQeavcvR0PKmzxClyuFPSjKWw==}
+    dev: false
+
   /@humanwhocodes/config-array@0.11.10:
     resolution: {integrity: sha512-KVVjQmNUepDVGXNuoRRdmmEjruj0KfiGSbS8LVc12LMsWDQzRXJ0qdhN8L8uUigKpfEHRhlaQFY0ib1tnUbNeQ==}
     engines: {node: '>=10.10.0'}
@@ -3147,6 +3175,7 @@ packages:
   /node-gyp-build-optional-packages@5.0.7:
     resolution: {integrity: sha512-YlCCc6Wffkx0kHkmam79GKvDQ6x+QZkMjFGrIMxgFNILFvGSbCp2fCBC55pGTT9gVaz8Na5CLmxt/urtzRv36w==}
     hasBin: true
+    requiresBuild: true
     dev: true
     optional: true
 
diff --git a/FrontEnd/src/pages/timeline/Timeline.css b/FrontEnd/src/pages/timeline/Timeline.css
index f071f163..30ad75c9 100644
--- a/FrontEnd/src/pages/timeline/Timeline.css
+++ b/FrontEnd/src/pages/timeline/Timeline.css
@@ -1,7 +1,19 @@
+.timeline {
+  --timeline-background-color: #f3f3f3;
+  --timeline-shadow-color: #00000080;
+  --timeline-post-line-color: #eadd2c;
+  --timeline-post-line-shadow: 2px 1px 10px -1px var(--timeline-shadow-color);
+  --timeline-post-card-background-color: rgb(255, 255, 255);
+  --timeline-post-card-shadow: 4px 2px 10px -2px var(--timeline-shadow-color);
+  --timeline-post-card-border-radius: 10px;
+  --timeline-post-text-color: #000000;
+}
+
 .timeline {
   z-index: 0;
   position: relative;
   width: 100%;
+  background-color: var(--timeline-background-color);
 }
 
 @keyframes timeline-line-node {
@@ -26,6 +38,7 @@
   from {
     transform: rotate(0turn);
   }
+
   to {
     transform: rotate(1turn);
   }
@@ -42,6 +55,7 @@
     transform: translate(0, 100%);
     opacity: 0;
   }
+
   to {
     opacity: 1;
   }
@@ -71,40 +85,46 @@
 }
 
 .timeline-line .segment {
-  width: 7px;
+  width: 12px;
   background: var(--cru-primary-color);
 }
+
 .timeline-line .segment.start {
   height: 1.8em;
   flex: 0 0 auto;
 }
+
 .timeline-line .segment.end {
   flex: 1 1 auto;
 }
+
 .timeline-line .segment.current-end {
   height: 2em;
   flex: 0 0 auto;
   background: linear-gradient(var(--cru-primary-enhance-color), white);
 }
+
 .timeline-line .node-container {
   flex: 0 0 auto;
   position: relative;
   width: 18px;
   height: 18px;
 }
+
 .timeline-line .node {
-  width: 20px;
-  height: 20px;
+  width: 24px;
+  height: 24px;
   position: absolute;
   background: var(--cru-primary-color);
-  left: -1px;
-  top: -1px;
+  left: -3px;
+  top: -3px;
   border-radius: 50%;
   box-sizing: border-box;
   z-index: 1;
   animation: 1s infinite alternate;
   animation-name: timeline-line-node;
 }
+
 .timeline-line .node-loading-edge {
   color: var(--cru-primary-color);
   width: 38px;
@@ -116,11 +136,10 @@
   z-index: 2;
   animation: 1.5s linear infinite timeline-line-node-loading-edge;
 }
+
 .timeline-line.current .segment.start {
-  background: linear-gradient(
-    var(--cru-primary-color),
-    var(--cru-primary-enhance-color)
-  );
+  background: linear-gradient(var(--cru-primary-color),
+      var(--cru-primary-enhance-color));
 }
 
 .timeline-line.current .segment.end {
@@ -137,67 +156,11 @@
   animation-name: timeline-line-node-loading;
 }
 
-.timeline-item {
-  position: relative;
-  padding: 0.5em;
-}
-
-.timeline-item-card {
-  position: relative;
-  padding: 0.5em 0.5em 0.5em 4em;
-}
-
-.timeline-item-card.enter-animation {
-  animation: 0.6s forwards;
-  opacity: 0;
-}
-
-@media (max-width: 575.98px) {
-  .timeline-item-card {
-    padding-left: 3em;
-  }
-}
-
-.timeline-item-header {
-  display: flex;
-  align-items: center;
-}
-
-.timeline-avatar {
-  border-radius: 50%;
-  width: 2em;
-  height: 2em;
-}
-
-.timeline-item-delete-button {
-  position: absolute;
-  right: 0;
-  bottom: 0;
-}
-
-.timeline-content {
-  white-space: pre-line;
-}
-
 .timeline-content-image {
   max-width: 80%;
   max-height: 200px;
 }
 
-.timeline-date-item {
-  position: relative;
-  padding: 0.3em 0 0.3em 4em;
-}
-
-.timeline-date-item-badge {
-  display: inline-block;
-  padding: 0.1em 0.4em;
-  border-radius: 0.4em;
-  background: #7c7c7c;
-  color: white;
-  font-size: 0.8em;
-}
-
 .timeline-post-item-options-mask {
   background: rgba(255, 255, 255, 0.85);
   z-index: 100;
@@ -234,4 +197,4 @@
 .timeline-top {
   position: sticky;
   top: 56px;
-}
+}
\ No newline at end of file
diff --git a/FrontEnd/src/pages/timeline/Timeline.tsx b/FrontEnd/src/pages/timeline/Timeline.tsx
index f93e1623..317d602e 100644
--- a/FrontEnd/src/pages/timeline/Timeline.tsx
+++ b/FrontEnd/src/pages/timeline/Timeline.tsx
@@ -1,4 +1,4 @@
-import * as React from "react";
+import { useState, useEffect } from "react";
 import classnames from "classnames";
 import { useScrollToBottom } from "@/utilities/hooks";
 import { HubConnectionState } from "@microsoft/signalr";
@@ -14,56 +14,49 @@ import {
   HttpTimelinePostInfo,
 } from "@/http/timeline";
 
-import { useUser } from "@/services/user";
 import { getTimelinePostUpdate$ } from "@/services/timeline";
 
-import TimelinePostListView from "./TimelinePostListView";
-import TimelineEmptyItem from "./TimelineEmptyItem";
-import TimelineLoading from "./TimelineLoading";
+import TimelinePostList from "./TimelinePostList";
 import TimelinePostEdit from "./TimelinePostEdit";
-import TimelinePostEditNoLogin from "./TimelinePostEditNoLogin";
 import TimelineCard from "./TimelineCard";
 
 import "./Timeline.css";
 
 export interface TimelineProps {
   className?: string;
-  style?: React.CSSProperties;
   timelineOwner: string;
   timelineName: string;
 }
 
-const Timeline: React.FC<TimelineProps> = (props) => {
-  const { timelineOwner, timelineName, className, style } = props;
+export function Timeline(props: TimelineProps) {
+  const { timelineOwner, timelineName, className } = props;
 
-  const user = useUser();
-
-  const [timeline, setTimeline] = React.useState<HttpTimelineInfo | null>(null);
-  const [posts, setPosts] = React.useState<HttpTimelinePostInfo[] | null>(null);
-  const [signalrState, setSignalrState] = React.useState<HubConnectionState>(
+  const [timeline, setTimeline] = useState<HttpTimelineInfo | null>(null);
+  const [posts, setPosts] = useState<HttpTimelinePostInfo[] | null>(null);
+  const [signalrState, setSignalrState] = useState<HubConnectionState>(
     HubConnectionState.Connecting,
   );
-  const [error, setError] = React.useState<
+  const [error, setError] = useState<
     "offline" | "forbid" | "notfound" | "error" | null
   >(null);
 
-  const [currentPage, setCurrentPage] = React.useState(1);
-  const [totalPage, setTotalPage] = React.useState(0);
+  const [currentPage, setCurrentPage] = useState(1);
+  const [totalPage, setTotalPage] = useState(0);
 
-  const [timelineReloadKey, setTimelineReloadKey] = React.useState(0);
-  const [postsReloadKey, setPostsReloadKey] = React.useState(0);
+  const [timelineReloadKey, setTimelineReloadKey] = useState(0);
+  const [postsReloadKey, setPostsReloadKey] = useState(0);
 
   const updateTimeline = (): void => setTimelineReloadKey((o) => o + 1);
   const updatePosts = (): void => setPostsReloadKey((o) => o + 1);
 
-  React.useEffect(() => {
+  useEffect(() => {
     setTimeline(null);
     setPosts(null);
     setError(null);
     setSignalrState(HubConnectionState.Connecting);
   }, [timelineOwner, timelineName]);
 
-  React.useEffect(() => {
+  useEffect(() => {
     getHttpTimelineClient()
       .getTimeline(timelineOwner, timelineName)
       .then(
@@ -85,7 +78,7 @@ const Timeline: React.FC<TimelineProps> = (props) => {
       );
   }, [timelineOwner, timelineName, timelineReloadKey]);
 
-  React.useEffect(() => {
+  useEffect(() => {
     getHttpTimelineClient()
       .listPost(timelineOwner, timelineName, 1)
       .then(
@@ -110,7 +103,7 @@ const Timeline: React.FC<TimelineProps> = (props) => {
       );
   }, [timelineOwner, timelineName, postsReloadKey]);
 
-  React.useEffect(() => {
+  useEffect(() => {
     const timelinePostUpdate$ = getTimelinePostUpdate$(
       timelineOwner,
       timelineName,
@@ -154,33 +147,16 @@ const Timeline: React.FC<TimelineProps> = (props) => {
   }, currentPage < totalPage);
 
   if (error === "offline") {
-    return (
-      <div className={className} style={style}>
-        Offline.
-      </div>
-    );
+    return <div className={className}>Offline.</div>;
   } else if (error === "notfound") {
-    return (
-      <div className={className} style={style}>
-        Not exist.
-      </div>
-    );
+    return <div className={className}>Not exist.</div>;
   } else if (error === "forbid") {
-    return (
-      <div className={className} style={style}>
-        Forbid.
-      </div>
-    );
+    return <div className={className}>Forbid.</div>;
   } else if (error === "error") {
-    return (
-      <div className={className} style={style}>
-        Error.
-      </div>
-    );
+    return <div className={className}>Error.</div>;
   }
   return (
     <>
-      {timeline == null && posts == null && <TimelineLoading />}
       {timeline && (
         <TimelineCard
           timeline={timeline}
@@ -189,18 +165,15 @@ const Timeline: React.FC<TimelineProps> = (props) => {
         />
       )}
       {posts && (
-        <div style={style} className={classnames("timeline", className)}>
-          <TimelineEmptyItem className="timeline-top" height={50} />
-          {timeline?.postable ? (
+        <div className={classnames("timeline", className)}>
+          {timeline?.postable && (
             <TimelinePostEdit timeline={timeline} onPosted={updatePosts} />
-          ) : user == null ? (
-            <TimelinePostEditNoLogin />
-          ) : null}
-          <TimelinePostListView posts={posts} onReload={updatePosts} />
+          )}
+          <TimelinePostList posts={posts} onReload={updatePosts} />
         </div>
       )}
     </>
   );
-};
+}
 
 export default Timeline;
diff --git a/FrontEnd/src/pages/timeline/TimelineCard.tsx b/FrontEnd/src/pages/timeline/TimelineCard.tsx
index b287c620..04b34ec1 100644
--- a/FrontEnd/src/pages/timeline/TimelineCard.tsx
+++ b/FrontEnd/src/pages/timeline/TimelineCard.tsx
@@ -123,7 +123,7 @@ export default function TimelineCard(props: TimelinePageCardProps) {
 
   return (
     <Card
-      color="secondary"
+      color="tertiary"
       className={`timeline-card timeline-card-${
         collapse ? "collapse" : "expand"
       }`}
diff --git a/FrontEnd/src/pages/timeline/TimelineDateLabel.css b/FrontEnd/src/pages/timeline/TimelineDateLabel.css
new file mode 100644
index 00000000..1c66045b
--- /dev/null
+++ b/FrontEnd/src/pages/timeline/TimelineDateLabel.css
@@ -0,0 +1,9 @@
+.timeline-post-date-badge {
+  display: inline-block;
+  padding: 0.1em 0.4em;
+  border-radius: 0.4em;
+  background: #7c7c7c;
+  color: white;
+  font-size: 0.8em;
+  margin-left: 5em;
+}
\ No newline at end of file
diff --git a/FrontEnd/src/pages/timeline/TimelineDateLabel.tsx b/FrontEnd/src/pages/timeline/TimelineDateLabel.tsx
index 5f4ac706..eaadcc1a 100644
--- a/FrontEnd/src/pages/timeline/TimelineDateLabel.tsx
+++ b/FrontEnd/src/pages/timeline/TimelineDateLabel.tsx
@@ -1,19 +1,13 @@
-import * as React from "react";
-import TimelineLine from "./TimelineLine";
+import TimelinePostContainer from "./TimelinePostContainer";
 
-export interface TimelineDateItemProps {
-  date: Date;
-}
+import "./TimelineDateLabel.css";
 
-const TimelineDateLabel: React.FC<TimelineDateItemProps> = ({ date }) => {
+export default function TimelineDateLabel({ date }: { date: Date }) {
   return (
-    <div className="timeline-date-item">
-      <TimelineLine center="none" />
-      <div className="timeline-date-item-badge">
+    <TimelinePostContainer>
+      <div className="timeline-post-date-badge">
         {date.toLocaleDateString()}
       </div>
-    </div>
+    </TimelinePostContainer>
   );
-};
-
-export default TimelineDateLabel;
+}
diff --git a/FrontEnd/src/pages/timeline/TimelineEmptyItem.tsx b/FrontEnd/src/pages/timeline/TimelineEmptyItem.tsx
deleted file mode 100644
index 5e0728d4..00000000
--- a/FrontEnd/src/pages/timeline/TimelineEmptyItem.tsx
+++ /dev/null
@@ -1,25 +0,0 @@
-import * as React from "react";
-import classnames from "classnames";
-
-import TimelineLine, { TimelineLineProps } from "./TimelineLine";
-
-export interface TimelineEmptyItemProps extends Partial<TimelineLineProps> {
-  height?: number | string;
-  className?: string;
-  style?: React.CSSProperties;
-}
-
-const TimelineEmptyItem: React.FC<TimelineEmptyItemProps> = (props) => {
-  const { height, style, className, center, ...lineProps } = props;
-
-  return (
-    <div
-      style={{ ...style, height: height }}
-      className={classnames("timeline-item", className)}
-    >
-      <TimelineLine center={center ?? "none"} {...lineProps} />
-    </div>
-  );
-};
-
-export default TimelineEmptyItem;
diff --git a/FrontEnd/src/pages/timeline/TimelineLine.tsx b/FrontEnd/src/pages/timeline/TimelineLine.tsx
deleted file mode 100644
index 4a87e6e0..00000000
--- a/FrontEnd/src/pages/timeline/TimelineLine.tsx
+++ /dev/null
@@ -1,51 +0,0 @@
-import * as React from "react";
-import classnames from "classnames";
-
-export interface TimelineLineProps {
-  current?: boolean;
-  startSegmentLength?: string | number;
-  center: "node" | "loading" | "none";
-  className?: string;
-  style?: React.CSSProperties;
-}
-
-const TimelineLine: React.FC<TimelineLineProps> = ({
-  startSegmentLength,
-  center,
-  current,
-  className,
-  style,
-}) => {
-  return (
-    <div
-      className={classnames(
-        "timeline-line",
-        current && "current",
-        center === "loading" && "loading",
-        className
-      )}
-      style={style}
-    >
-      <div className="segment start" style={{ height: startSegmentLength }} />
-      {center !== "none" ? (
-        <div className="node-container">
-          <div className="node"></div>
-          {center === "loading" ? (
-            <svg className="node-loading-edge" viewBox="0 0 100 100">
-              <path
-                d="M 50,10 A 40 40 45 0 1 78.28,21.72"
-                stroke="currentcolor"
-                strokeLinecap="square"
-                strokeWidth="8"
-              />
-            </svg>
-          ) : null}
-        </div>
-      ) : null}
-      {center !== "loading" ? <div className="segment end"></div> : null}
-      {current && <div className="segment current-end" />}
-    </div>
-  );
-};
-
-export default TimelineLine;
diff --git a/FrontEnd/src/pages/timeline/TimelineLoading.tsx b/FrontEnd/src/pages/timeline/TimelineLoading.tsx
deleted file mode 100644
index f876cba9..00000000
--- a/FrontEnd/src/pages/timeline/TimelineLoading.tsx
+++ /dev/null
@@ -1,16 +0,0 @@
-import * as React from "react";
-
-import TimelineEmptyItem from "./TimelineEmptyItem";
-
-const TimelineLoading: React.FC = () => {
-  return (
-    <TimelineEmptyItem
-      className="timeline-top-loading-enter"
-      height={100}
-      center="loading"
-      startSegmentLength={56}
-    />
-  );
-};
-
-export default TimelineLoading;
diff --git a/FrontEnd/src/pages/timeline/TimelinePostCard.css b/FrontEnd/src/pages/timeline/TimelinePostCard.css
new file mode 100644
index 00000000..3a446f44
--- /dev/null
+++ b/FrontEnd/src/pages/timeline/TimelinePostCard.css
@@ -0,0 +1,9 @@
+.timeline-post-card {
+  padding: 1em 1em 1em 3em;
+  color: var(--timeline-post-text-color);
+  background-color: var(--timeline-post-card-background-color);
+  box-shadow: var(--timeline-post-card-shadow);
+  border-radius: var(--timeline-post-card-border-radius);
+  position: relative;
+  z-index: 1;
+}
\ No newline at end of file
diff --git a/FrontEnd/src/pages/timeline/TimelinePostCard.tsx b/FrontEnd/src/pages/timeline/TimelinePostCard.tsx
new file mode 100644
index 00000000..83479349
--- /dev/null
+++ b/FrontEnd/src/pages/timeline/TimelinePostCard.tsx
@@ -0,0 +1,22 @@
+import { ReactNode } from "react";
+import classNames from "classnames";
+
+import Card from "@/views/common/Card";
+
+import "./TimelinePostCard.css";
+
+export interface TimelinePostEditCardProps {
+  className?: string;
+  children?: ReactNode;
+}
+
+export default function TimelinePostCard({
+  className,
+  children,
+}: TimelinePostEditCardProps) {
+  return (
+    <Card className={classNames("timeline-post-card", className)}>
+      {children}
+    </Card>
+  );
+}
diff --git a/FrontEnd/src/pages/timeline/TimelinePostContainer.css b/FrontEnd/src/pages/timeline/TimelinePostContainer.css
new file mode 100644
index 00000000..a12f70b1
--- /dev/null
+++ b/FrontEnd/src/pages/timeline/TimelinePostContainer.css
@@ -0,0 +1,3 @@
+.timeline-post-container {
+  padding: 0.5em 1em;
+}
\ No newline at end of file
diff --git a/FrontEnd/src/pages/timeline/TimelinePostContainer.tsx b/FrontEnd/src/pages/timeline/TimelinePostContainer.tsx
new file mode 100644
index 00000000..4697268b
--- /dev/null
+++ b/FrontEnd/src/pages/timeline/TimelinePostContainer.tsx
@@ -0,0 +1,20 @@
+import { ReactNode } from "react";
+import classNames from "classnames";
+
+import "./TimelinePostContainer.css";
+
+export interface TimelinePostEditCardProps {
+  className?: string;
+  children?: ReactNode;
+}
+
+export default function TimelinePostContainer({
+  className,
+  children,
+}: TimelinePostEditCardProps) {
+  return (
+    <div className={classNames("timeline-post-container", className)}>
+      {children}
+    </div>
+  );
+}
diff --git a/FrontEnd/src/pages/timeline/TimelinePostEdit.tsx b/FrontEnd/src/pages/timeline/TimelinePostEdit.tsx
index c1fa0dd9..b0cc763a 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostEdit.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostEdit.tsx
@@ -18,7 +18,7 @@ import BlobImage from "@/views/common/BlobImage";
 import LoadingButton from "@/views/common/button/LoadingButton";
 import PopupMenu from "@/views/common/menu/PopupMenu";
 import MarkdownPostEdit from "./MarkdownPostEdit";
-import TimelinePostEditCard from "./TimelinePostEditCard";
+import TimelinePostEditCard from "./TimelinePostContainer";
 import IconButton from "@/views/common/button/IconButton";
 
 import "./TimelinePostEdit.css";
@@ -118,7 +118,7 @@ export interface TimelinePostEditProps {
 }
 
 const TimelinePostEdit: React.FC<TimelinePostEditProps> = (props) => {
-  const { timeline, style, className, onPosted } = props;
+  const { timeline, className, onPosted } = props;
 
   const { t } = useTranslation();
 
@@ -195,7 +195,7 @@ const TimelinePostEdit: React.FC<TimelinePostEditProps> = (props) => {
   };
 
   return (
-    <TimelinePostEditCard className={className} style={style}>
+    <TimelinePostEditCard className={className}>
       {showMarkdown ? (
         <MarkdownPostEdit
           className="cru-fill-parent"
diff --git a/FrontEnd/src/pages/timeline/TimelinePostEditCard.tsx b/FrontEnd/src/pages/timeline/TimelinePostEditCard.tsx
deleted file mode 100644
index fdd53983..00000000
--- a/FrontEnd/src/pages/timeline/TimelinePostEditCard.tsx
+++ /dev/null
@@ -1,31 +0,0 @@
-import * as React from "react";
-import classnames from "classnames";
-
-import Card from "@/views/common/Card";
-import TimelineLine from "./TimelineLine";
-
-import "./TimelinePostEdit.css";
-
-export interface TimelinePostEditCardProps {
-  className?: string;
-  style?: React.CSSProperties;
-  children?: React.ReactNode;
-}
-
-const TimelinePostEdit: React.FC<TimelinePostEditCardProps> = ({
-  className,
-  style,
-  children,
-}) => {
-  return (
-    <div
-      className={classnames("timeline-item timeline-post-edit", className)}
-      style={style}
-    >
-      <TimelineLine center="node" />
-      <Card className="timeline-item-card">{children}</Card>
-    </div>
-  );
-};
-
-export default TimelinePostEdit;
diff --git a/FrontEnd/src/pages/timeline/TimelinePostEditNoLogin.tsx b/FrontEnd/src/pages/timeline/TimelinePostEditNoLogin.tsx
deleted file mode 100644
index 1ef0a287..00000000
--- a/FrontEnd/src/pages/timeline/TimelinePostEditNoLogin.tsx
+++ /dev/null
@@ -1,18 +0,0 @@
-import * as React from "react";
-import { Trans } from "react-i18next";
-import { Link } from "react-router-dom";
-
-import TimelinePostEditCard from "./TimelinePostEditCard";
-
-export default function TimelinePostEditNoLogin(): React.ReactElement | null {
-  return (
-    <TimelinePostEditCard>
-      <div className="mt-3 mb-4">
-        <Trans
-          i18nKey="timeline.postNoLogin"
-          components={{ l: <Link to="/login" /> }}
-        />
-      </div>
-    </TimelinePostEditCard>
-  );
-}
diff --git a/FrontEnd/src/pages/timeline/TimelinePostList.css b/FrontEnd/src/pages/timeline/TimelinePostList.css
new file mode 100644
index 00000000..bd575554
--- /dev/null
+++ b/FrontEnd/src/pages/timeline/TimelinePostList.css
@@ -0,0 +1,10 @@
+.timeline-post-timeline {
+  position: absolute;
+  left: 2.5em;
+  width: 1em;
+  top: 0;
+  bottom: 0;
+  background-color: var(--timeline-post-line-color);
+  box-shadow: var(--timeline-post-line-shadow);
+  z-index: -1;
+}
\ No newline at end of file
diff --git a/FrontEnd/src/pages/timeline/TimelinePostList.tsx b/FrontEnd/src/pages/timeline/TimelinePostList.tsx
new file mode 100644
index 00000000..a3501b33
--- /dev/null
+++ b/FrontEnd/src/pages/timeline/TimelinePostList.tsx
@@ -0,0 +1,76 @@
+import { useMemo, Fragment } from "react";
+
+import { HttpTimelinePostInfo } from "@/http/timeline";
+
+import TimelinePostView from "./TimelinePostView";
+import TimelineDateLabel from "./TimelineDateLabel";
+
+import "./TimelinePostList.css";
+
+function dateEqual(left: Date, right: Date): boolean {
+  return (
+    left.getDate() == right.getDate() &&
+    left.getMonth() == right.getMonth() &&
+    left.getFullYear() == right.getFullYear()
+  );
+}
+
+interface TimelinePostListViewProps {
+  posts: HttpTimelinePostInfo[];
+  onReload: () => void;
+}
+
+export default function TimelinePostList(props: TimelinePostListViewProps) {
+  const { posts, onReload } = props;
+
+  const groupedPosts = useMemo<
+    {
+      date: Date;
+      posts: (HttpTimelinePostInfo & { index: number })[];
+    }[]
+  >(() => {
+    const result: {
+      date: Date;
+      posts: (HttpTimelinePostInfo & { index: number })[];
+    }[] = [];
+    let index = 0;
+    for (const post of posts) {
+      const time = new Date(post.time);
+      if (result.length === 0) {
+        result.push({ date: time, posts: [{ ...post, index }] });
+      } else {
+        const lastGroup = result[result.length - 1];
+        if (dateEqual(lastGroup.date, time)) {
+          lastGroup.posts.push({ ...post, index });
+        } else {
+          result.push({ date: time, posts: [{ ...post, index }] });
+        }
+      }
+      index++;
+    }
+    return result;
+  }, [posts]);
+
+  return (
+    <div>
+      <div className="timeline-post-timeline" />
+      {groupedPosts.map((group) => {
+        return (
+          <Fragment key={group.date.toDateString()}>
+            <TimelineDateLabel date={group.date} />
+            {group.posts.map((post) => {
+              return (
+                <TimelinePostView
+                  key={post.id}
+                  post={post}
+                  onChanged={onReload}
+                  onDeleted={onReload}
+                />
+              );
+            })}
+          </Fragment>
+        );
+      })}
+    </div>
+  );
+}
diff --git a/FrontEnd/src/pages/timeline/TimelinePostListView.tsx b/FrontEnd/src/pages/timeline/TimelinePostListView.tsx
deleted file mode 100644
index f878b004..00000000
--- a/FrontEnd/src/pages/timeline/TimelinePostListView.tsx
+++ /dev/null
@@ -1,76 +0,0 @@
-import { Fragment } from "react";
-import * as React from "react";
-
-import { HttpTimelinePostInfo } from "@/http/timeline";
-
-import TimelinePostView from "./TimelinePostView";
-import TimelineDateLabel from "./TimelineDateLabel";
-
-function dateEqual(left: Date, right: Date): boolean {
-  return (
-    left.getDate() == right.getDate() &&
-    left.getMonth() == right.getMonth() &&
-    left.getFullYear() == right.getFullYear()
-  );
-}
-
-export interface TimelinePostListViewProps {
-  posts: HttpTimelinePostInfo[];
-  onReload: () => void;
-}
-
-const TimelinePostListView: React.FC<TimelinePostListViewProps> = (props) => {
-  const { posts, onReload } = props;
-
-  const groupedPosts = React.useMemo<
-    {
-      date: Date;
-      posts: (HttpTimelinePostInfo & { index: number })[];
-    }[]
-  >(() => {
-    const result: {
-      date: Date;
-      posts: (HttpTimelinePostInfo & { index: number })[];
-    }[] = [];
-    let index = 0;
-    for (const post of posts) {
-      const time = new Date(post.time);
-      if (result.length === 0) {
-        result.push({ date: time, posts: [{ ...post, index }] });
-      } else {
-        const lastGroup = result[result.length - 1];
-        if (dateEqual(lastGroup.date, time)) {
-          lastGroup.posts.push({ ...post, index });
-        } else {
-          result.push({ date: time, posts: [{ ...post, index }] });
-        }
-      }
-      index++;
-    }
-    return result;
-  }, [posts]);
-
-  return (
-    <>
-      {groupedPosts.map((group) => {
-        return (
-          <Fragment key={group.date.toDateString()}>
-            <TimelineDateLabel date={group.date} />
-            {group.posts.map((post) => {
-              return (
-                <TimelinePostView
-                  key={post.id}
-                  post={post}
-                  onChanged={onReload}
-                  onDeleted={onReload}
-                />
-              );
-            })}
-          </Fragment>
-        );
-      })}
-    </>
-  );
-};
-
-export default TimelinePostListView;
diff --git a/FrontEnd/src/pages/timeline/TimelinePostView.css b/FrontEnd/src/pages/timeline/TimelinePostView.css
index 2cd8cd6b..229b4a7a 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostView.css
+++ b/FrontEnd/src/pages/timeline/TimelinePostView.css
@@ -1,13 +1,3 @@
-.timeline-post {
-  position: relative;
-  padding: 0.5em;
-}
-
-.timeline-post-card {
-  position: relative;
-  padding: 0.5em 0.5em 0.5em 4em;
-}
-
 .timeline-post-header {
   display: flex;
   align-items: center;
@@ -19,10 +9,17 @@
   height: 2em;
 }
 
-.timeline-post-delete-button {
+.timeline-post-edit-button {
+  float: right;
+}
+
+.timeline-post-options-mask {
   position: absolute;
-  right: 0;
-  bottom: 0;
+  inset: 0;
+  background-color: hsla(0, 0%, 100%, 0.9);
+  display: flex;
+  align-items: center;
+  justify-content: space-around;
 }
 
 .timeline-post-content {
diff --git a/FrontEnd/src/pages/timeline/TimelinePostView.tsx b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
index bdd2e3ef..2648fa21 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostView.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
@@ -1,5 +1,4 @@
 import { useState } from "react";
-import classNames from "classnames";
 
 import { getHttpTimelineClient, HttpTimelinePostInfo } from "@/http/timeline";
 
@@ -9,13 +8,14 @@ import { useClickOutside } from "@/utilities/hooks";
 
 import UserAvatar from "@/views/common/user/UserAvatar";
 import { useDialog } from "@/views/common/dialog";
-import Card from "@/views/common/Card";
 import FlatButton from "@/views/common/button/FlatButton";
 import ConfirmDialog from "@/views/common/dialog/ConfirmDialog";
-import TimelineLine from "./TimelineLine";
 import TimelinePostContentView from "./TimelinePostContentView";
 import IconButton from "@/views/common/button/IconButton";
 
+import TimelinePostContainer from "./TimelinePostContainer";
+import TimelinePostCard from "./TimelinePostCard";
+
 import "./TimelinePostView.css";
 
 export interface TimelinePostViewProps {
@@ -26,7 +26,7 @@ export interface TimelinePostViewProps {
 }
 
 export function TimelinePostView(props: TimelinePostViewProps) {
-  const { post, className, onDeleted } = props;
+  const { post, onDeleted } = props;
 
   const [operationMaskVisible, setOperationMaskVisible] =
     useState<boolean>(false);
@@ -43,12 +43,8 @@ export function TimelinePostView(props: TimelinePostViewProps) {
   useClickOutside(maskElement, () => setOperationMaskVisible(false));
 
   return (
-    <div
-      id={`timeline-post-${post.id}`}
-      className={classNames("timeline-post cru-primary", className)}
-    >
-      <TimelineLine center="node" />
-      <Card className="timeline-post-card">
+    <TimelinePostContainer>
+      <TimelinePostCard className="cru-primary">
         {post.editable && (
           <IconButton
             icon="chevron-down"
@@ -98,7 +94,7 @@ export function TimelinePostView(props: TimelinePostViewProps) {
             />
           </div>
         ) : null}
-      </Card>
+      </TimelinePostCard>
       <ConfirmDialog
         title="timeline.post.deleteDialog.title"
         body="timeline.post.deleteDialog.prompt"
@@ -114,7 +110,7 @@ export function TimelinePostView(props: TimelinePostViewProps) {
         }}
         {...dialogPropsMap.delete}
       />
-    </div>
+    </TimelinePostContainer>
   );
 }
 
-- 
cgit v1.2.3


From 4133d7122a54faf85458151d36c5fc040db7baef Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Tue, 1 Aug 2023 00:40:18 +0800
Subject: ...

---
 FrontEnd/src/pages/setting/index.tsx               |  2 +-
 FrontEnd/src/pages/timeline/TimelinePostCard.tsx   |  4 +--
 .../src/pages/timeline/TimelinePostContainer.tsx   |  4 +--
 FrontEnd/src/pages/timeline/TimelinePostEdit.tsx   | 39 ++++++++++------------
 FrontEnd/src/pages/timeline/TimelinePostView.tsx   |  6 ++--
 5 files changed, 25 insertions(+), 30 deletions(-)

(limited to 'FrontEnd/src/pages/timeline/TimelinePostView.tsx')

diff --git a/FrontEnd/src/pages/setting/index.tsx b/FrontEnd/src/pages/setting/index.tsx
index 12a7670e..8e8ae488 100644
--- a/FrontEnd/src/pages/setting/index.tsx
+++ b/FrontEnd/src/pages/setting/index.tsx
@@ -247,7 +247,7 @@ export default function SettingPage() {
   ]);
 
   return (
-    <Page noTopPadding>
+    <Page className="cru-primary" noTopPadding>
       {user ? (
         <SettingSection title="settings.subheader.account">
           <RegisterCodeSettingItem />
diff --git a/FrontEnd/src/pages/timeline/TimelinePostCard.tsx b/FrontEnd/src/pages/timeline/TimelinePostCard.tsx
index 83479349..f3743915 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostCard.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostCard.tsx
@@ -5,7 +5,7 @@ import Card from "@/views/common/Card";
 
 import "./TimelinePostCard.css";
 
-export interface TimelinePostEditCardProps {
+interface TimelinePostCardProps {
   className?: string;
   children?: ReactNode;
 }
@@ -13,7 +13,7 @@ export interface TimelinePostEditCardProps {
 export default function TimelinePostCard({
   className,
   children,
-}: TimelinePostEditCardProps) {
+}: TimelinePostCardProps) {
   return (
     <Card className={classNames("timeline-post-card", className)}>
       {children}
diff --git a/FrontEnd/src/pages/timeline/TimelinePostContainer.tsx b/FrontEnd/src/pages/timeline/TimelinePostContainer.tsx
index 4697268b..9dc211b2 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostContainer.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostContainer.tsx
@@ -3,7 +3,7 @@ import classNames from "classnames";
 
 import "./TimelinePostContainer.css";
 
-export interface TimelinePostEditCardProps {
+interface TimelinePostContainerProps {
   className?: string;
   children?: ReactNode;
 }
@@ -11,7 +11,7 @@ export interface TimelinePostEditCardProps {
 export default function TimelinePostContainer({
   className,
   children,
-}: TimelinePostEditCardProps) {
+}: TimelinePostContainerProps) {
   return (
     <div className={classNames("timeline-post-container", className)}>
       {children}
diff --git a/FrontEnd/src/pages/timeline/TimelinePostEdit.tsx b/FrontEnd/src/pages/timeline/TimelinePostEdit.tsx
index b0cc763a..cd5a2d8d 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostEdit.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostEdit.tsx
@@ -1,4 +1,4 @@
-import * as React from "react";
+import { useState, useEffect, ChangeEventHandler } from "react";
 import { useTranslation } from "react-i18next";
 
 import { UiLogicError } from "@/common";
@@ -28,11 +28,10 @@ interface TimelinePostEditTextProps {
   disabled: boolean;
   onChange: (text: string) => void;
   className?: string;
-  style?: React.CSSProperties;
 }
 
-const TimelinePostEditText: React.FC<TimelinePostEditTextProps> = (props) => {
-  const { text, disabled, onChange, className, style } = props;
+function TimelinePostEditText(props: TimelinePostEditTextProps) {
+  const { text, disabled, onChange, className } = props;
 
   return (
     <textarea
@@ -42,25 +41,24 @@ const TimelinePostEditText: React.FC<TimelinePostEditTextProps> = (props) => {
         onChange(event.target.value);
       }}
       className={className}
-      style={style}
     />
   );
-};
+}
 
 interface TimelinePostEditImageProps {
   onSelect: (file: File | null) => void;
   disabled: boolean;
 }
 
-const TimelinePostEditImage: React.FC<TimelinePostEditImageProps> = (props) => {
+function TimelinePostEditImage(props: TimelinePostEditImageProps) {
   const { onSelect, disabled } = props;
 
   const { t } = useTranslation();
 
-  const [file, setFile] = React.useState<File | null>(null);
-  const [error, setError] = React.useState<boolean>(false);
+  const [file, setFile] = useState<File | null>(null);
+  const [error, setError] = useState<boolean>(false);
 
-  const onInputChange: React.ChangeEventHandler<HTMLInputElement> = (e) => {
+  const onInputChange: ChangeEventHandler<HTMLInputElement> = (e) => {
     setError(false);
     const files = e.target.files;
     if (files == null || files.length === 0) {
@@ -71,7 +69,7 @@ const TimelinePostEditImage: React.FC<TimelinePostEditImageProps> = (props) => {
     }
   };
 
-  React.useEffect(() => {
+  useEffect(() => {
     return () => {
       onSelect(null);
     };
@@ -100,7 +98,7 @@ const TimelinePostEditImage: React.FC<TimelinePostEditImageProps> = (props) => {
       {error ? <div className="text-danger">{t("loadImageError")}</div> : null}
     </>
   );
-};
+}
 
 type PostKind = "text" | "markdown" | "image";
 
@@ -112,27 +110,26 @@ const postKindIconMap: Record<PostKind, string> = {
 
 export interface TimelinePostEditProps {
   className?: string;
-  style?: React.CSSProperties;
   timeline: HttpTimelineInfo;
   onPosted: (newPost: HttpTimelinePostInfo) => void;
 }
 
-const TimelinePostEdit: React.FC<TimelinePostEditProps> = (props) => {
+function TimelinePostEdit(props: TimelinePostEditProps) {
   const { timeline, className, onPosted } = props;
 
   const { t } = useTranslation();
 
-  const [process, setProcess] = React.useState<boolean>(false);
+  const [process, setProcess] = useState<boolean>(false);
 
-  const [kind, setKind] = React.useState<Exclude<PostKind, "markdown">>("text");
-  const [showMarkdown, setShowMarkdown] = React.useState<boolean>(false);
+  const [kind, setKind] = useState<Exclude<PostKind, "markdown">>("text");
+  const [showMarkdown, setShowMarkdown] = useState<boolean>(false);
 
-  const [text, setText] = React.useState<string>("");
-  const [image, setImage] = React.useState<File | null>(null);
+  const [text, setText] = useState<string>("");
+  const [image, setImage] = useState<File | null>(null);
 
   const draftTextLocalStorageKey = `timeline.${timeline.owner.username}.${timeline.nameV2}.postDraft.text`;
 
-  React.useEffect(() => {
+  useEffect(() => {
     setText(window.localStorage.getItem(draftTextLocalStorageKey) ?? "");
   }, [draftTextLocalStorageKey]);
 
@@ -262,6 +259,6 @@ const TimelinePostEdit: React.FC<TimelinePostEditProps> = (props) => {
       )}
     </TimelinePostEditCard>
   );
-};
+}
 
 export default TimelinePostEdit;
diff --git a/FrontEnd/src/pages/timeline/TimelinePostView.tsx b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
index 2648fa21..07f2e0f0 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostView.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
@@ -18,14 +18,14 @@ import TimelinePostCard from "./TimelinePostCard";
 
 import "./TimelinePostView.css";
 
-export interface TimelinePostViewProps {
+interface TimelinePostViewProps {
   post: HttpTimelinePostInfo;
   className?: string;
   onChanged: (post: HttpTimelinePostInfo) => void;
   onDeleted: () => void;
 }
 
-export function TimelinePostView(props: TimelinePostViewProps) {
+export default function TimelinePostView(props: TimelinePostViewProps) {
   const { post, onDeleted } = props;
 
   const [operationMaskVisible, setOperationMaskVisible] =
@@ -113,5 +113,3 @@ export function TimelinePostView(props: TimelinePostViewProps) {
     </TimelinePostContainer>
   );
 }
-
-export default TimelinePostView;
-- 
cgit v1.2.3


From 1f90dd29a2e1a11cf16857513f14bce3df68c1e1 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Sat, 26 Aug 2023 16:28:39 +0800
Subject: ...

---
 FrontEnd/src/pages/setting/index.css               |  25 +++--
 FrontEnd/src/pages/setting/index.tsx               |   9 +-
 FrontEnd/src/pages/timeline/CollapseButton.tsx     |  18 ++--
 FrontEnd/src/pages/timeline/TimelineCard.tsx       |   1 +
 .../src/pages/timeline/TimelinePostCreateView.css  |   4 +-
 FrontEnd/src/pages/timeline/TimelinePostView.tsx   |   1 +
 FrontEnd/src/views/common/AppBar.css               |  11 +-
 FrontEnd/src/views/common/AppBar.tsx               |   9 +-
 FrontEnd/src/views/common/Card.css                 |  16 ++-
 FrontEnd/src/views/common/Card.tsx                 |   9 +-
 FrontEnd/src/views/common/button/Button.css        |  38 +++----
 FrontEnd/src/views/common/button/Button.tsx        |   2 +-
 FrontEnd/src/views/common/button/FlatButton.css    |  12 +--
 FrontEnd/src/views/common/button/FlatButton.tsx    |   2 +-
 FrontEnd/src/views/common/button/IconButton.css    |  10 +-
 FrontEnd/src/views/common/button/IconButton.tsx    |   4 +-
 FrontEnd/src/views/common/button/LoadingButton.css |   6 +-
 FrontEnd/src/views/common/button/LoadingButton.tsx |   2 +-
 FrontEnd/src/views/common/list/ListContainer.css   |   2 +-
 .../src/views/common/list/ListItemContainer.css    |   2 +-
 FrontEnd/src/views/common/theme.css                | 113 +++++++++++----------
 21 files changed, 161 insertions(+), 135 deletions(-)

(limited to 'FrontEnd/src/pages/timeline/TimelinePostView.tsx')

diff --git a/FrontEnd/src/pages/setting/index.css b/FrontEnd/src/pages/setting/index.css
index 86ccf706..a8a44524 100644
--- a/FrontEnd/src/pages/setting/index.css
+++ b/FrontEnd/src/pages/setting/index.css
@@ -1,5 +1,3 @@
-/* TODO: Make item prettier. */
-
 .setting-section {
   padding: 1em 0;
   margin: 1em 0;
@@ -7,35 +5,36 @@
 
 .setting-section-title {
   padding: 0 1em;
-  color: white;
 }
 
 .setting-section-item-area {
   margin-top: 1em;
-  border-top: 1px solid var(--cru-secondary-color);
+  border-top: 1px solid var(--cru-primary-color);
 }
 
 .setting-item-container {
   padding: 0.5em 1em;
   transition: background-color 0.3s;
-  background-color: var(--cru-background-color);
-  border-bottom: 1px solid var(--cru-secondary-color);
+  background-color: var(--cru-clickable-grayscale-normal-color);
+  border-bottom: 1px solid var(--cru-clickable-grayscale-active-color);
   display: flex;
   align-items: center;
 }
 
 .setting-item-container:hover {
-  color: white;
-  background-color: var(--cru-secondary-color);
+  background-color: var(--cru-clickable-grayscale-hover-color);
 }
 
-.setting-item-container.danger {
-  color: var(--cru-danger-color);
+.setting-item-container:focus {
+  background-color: var(--cru-clickable-grayscale-focus-color);
 }
 
-.setting-item-container.danger:hover {
-  color: white;
-  background-color: var(--cru-danger-color);
+.setting-item-container:active {
+  background-color: var(--cru-clickable-grayscale-active-color);
+}
+
+.setting-item-container.danger {
+  color: var(--cru-danger-color);
 }
 
 .setting-item-label-sub {
diff --git a/FrontEnd/src/pages/setting/index.tsx b/FrontEnd/src/pages/setting/index.tsx
index 4e0bf27e..50967a3c 100644
--- a/FrontEnd/src/pages/setting/index.tsx
+++ b/FrontEnd/src/pages/setting/index.tsx
@@ -247,9 +247,9 @@ export default function SettingPage() {
   ]);
 
   return (
-    <Page className="cru-primary" noTopPadding>
+    <Page noTopPadding>
       {user ? (
-        <SettingSection title="settings.subheader.account" color="secondary">
+        <SettingSection title="settings.subheader.account">
           <RegisterCodeSettingItem />
           <ButtonSettingItem
             title="settings.changeAvatar"
@@ -271,10 +271,7 @@ export default function SettingPage() {
           />
         </SettingSection>
       ) : null}
-      <SettingSection
-        title="settings.subheader.customization"
-        color="secondary"
-      >
+      <SettingSection title="settings.subheader.customization">
         <LanguageChangeSettingItem />
       </SettingSection>
       <ChangePasswordDialog {...dialogPropsMap["change-password"]} />
diff --git a/FrontEnd/src/pages/timeline/CollapseButton.tsx b/FrontEnd/src/pages/timeline/CollapseButton.tsx
index 8270e160..14fc6bee 100644
--- a/FrontEnd/src/pages/timeline/CollapseButton.tsx
+++ b/FrontEnd/src/pages/timeline/CollapseButton.tsx
@@ -1,21 +1,25 @@
-import * as React from "react";
+import { CSSProperties } from "react";
 
 import IconButton from "@/views/common/button/IconButton";
 
-const CollapseButton: React.FC<{
+export default function CollapseButton({
+  collapse,
+  onClick,
+  className,
+  style,
+}: {
   collapse: boolean;
   onClick: () => void;
   className?: string;
-  style?: React.CSSProperties;
-}> = ({ collapse, onClick, className, style }) => {
+  style?: CSSProperties;
+}) {
   return (
     <IconButton
+      color="primary"
       icon={collapse ? "arrows-angle-expand" : "arrows-angle-contract"}
       onClick={onClick}
       className={className}
       style={style}
     />
   );
-};
-
-export default CollapseButton;
+}
diff --git a/FrontEnd/src/pages/timeline/TimelineCard.tsx b/FrontEnd/src/pages/timeline/TimelineCard.tsx
index 8557e5dd..ed34b4ba 100644
--- a/FrontEnd/src/pages/timeline/TimelineCard.tsx
+++ b/FrontEnd/src/pages/timeline/TimelineCard.tsx
@@ -112,6 +112,7 @@ export default function TimelineCard(props: TimelinePageCardProps) {
             containerClassName="d-inline"
           >
             <IconButton
+              color="primary"
               className="timeline-card-button"
               icon="three-dots-vertical"
             />
diff --git a/FrontEnd/src/pages/timeline/TimelinePostCreateView.css b/FrontEnd/src/pages/timeline/TimelinePostCreateView.css
index 2a433860..5986e566 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostCreateView.css
+++ b/FrontEnd/src/pages/timeline/TimelinePostCreateView.css
@@ -24,11 +24,11 @@
 }
 
 .timeline-post-create-edit-text:hover {
-  border-color: var(--cru-button-secondary-normal-color)
+  border-color: var(--cru-clickable-secondary-normal-color)
 }
 
 .timeline-post-create-edit-text:focus {
-  border-color: var(--cru-button-secondary-normal-color)
+  border-color: var(--cru-clickable-secondary-normal-color)
 }
 
 .timeline-post-create-image {
diff --git a/FrontEnd/src/pages/timeline/TimelinePostView.tsx b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
index 07f2e0f0..afae5033 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostView.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
@@ -47,6 +47,7 @@ export default function TimelinePostView(props: TimelinePostViewProps) {
       <TimelinePostCard className="cru-primary">
         {post.editable && (
           <IconButton
+            color="primary"
             icon="chevron-down"
             className="timeline-post-edit-button"
             onClick={(e) => {
diff --git a/FrontEnd/src/views/common/AppBar.css b/FrontEnd/src/views/common/AppBar.css
index 2f2d4a1a..a0d975b5 100644
--- a/FrontEnd/src/views/common/AppBar.css
+++ b/FrontEnd/src/views/common/AppBar.css
@@ -37,15 +37,20 @@
 }
 
 .app-bar a:hover {
-  background-color: var(--cru-button-primary-hover-color);
+  background-color: var(--cru-clickable-primary-hover-color);
 }
 
 .app-bar a:focus {
-  background-color: var(--cru-button-primary-focus-color);
+  background-color: var(--cru-clickable-primary-focus-color);
 }
 
 .app-bar a:active {
-  background-color: var(--cru-button-primary-active-color);
+  background-color: var(--cru-clickable-primary-active-color);
+}
+
+/* the current page */
+.app-bar a.active {
+  background-color: var(--cru-clickable-primary-focus-color);
 }
 
 .app-bar .app-bar-avatar img {
diff --git a/FrontEnd/src/views/common/AppBar.tsx b/FrontEnd/src/views/common/AppBar.tsx
index dacd608a..b9ea825b 100644
--- a/FrontEnd/src/views/common/AppBar.tsx
+++ b/FrontEnd/src/views/common/AppBar.tsx
@@ -59,7 +59,7 @@ export default function AppBar() {
         isCollapse && "collapse",
       )}
     >
-      <Link to="/" className="app-bar-brand active" onClick={collapse}>
+      <Link to="/" className="app-bar-brand" onClick={collapse}>
         <TimelineLogo className="app-bar-brand-icon" />
         Timeline
       </Link>
@@ -91,12 +91,7 @@ export default function AppBar() {
       </div>
 
       {isMobile && (
-        <IconButton
-          icon="list"
-          className="toggler"
-          color="on-surface"
-          onClick={toggleCollapse}
-        />
+        <IconButton icon="list" className="toggler" onClick={toggleCollapse} />
       )}
     </nav>
   );
diff --git a/FrontEnd/src/views/common/Card.css b/FrontEnd/src/views/common/Card.css
index 301910c6..6d655eb9 100644
--- a/FrontEnd/src/views/common/Card.css
+++ b/FrontEnd/src/views/common/Card.css
@@ -1,10 +1,20 @@
 .cru-card {
   border-radius: var(--cru-card-border-radius);
-  border: 2px solid var(--cru-card-border-color);
-  background-color: var(--cru-card-background-color);
   transition: all 0.3s;
 }
 
-.cru-card-no-background {
+.cru-card-background-none {
+  background-color: transparent;
+}
+
+.cru-card-background-solid {
   background-color: var(--cru-background-color);
 }
+
+.cru-card-background-grayscale {
+  background-color: var(--cru-container-background-color);
+}
+
+.cru-card-border-color {
+  border: 2px solid var(--cru-card-border-color);
+}
diff --git a/FrontEnd/src/views/common/Card.tsx b/FrontEnd/src/views/common/Card.tsx
index fb29f728..a8f0d3cc 100644
--- a/FrontEnd/src/views/common/Card.tsx
+++ b/FrontEnd/src/views/common/Card.tsx
@@ -7,12 +7,14 @@ import "./Card.css";
 interface CardProps extends ComponentPropsWithoutRef<"div"> {
   containerRef?: Ref<HTMLDivElement>;
   color?: ThemeColor;
-  noBackground?: boolean;
+  border?: "color" | "none";
+  background?: "color" | "solid" | "grayscale" | "none";
 }
 
 export default function Card({
   color,
-  noBackground,
+  background,
+  border,
   className,
   children,
   containerRef,
@@ -24,7 +26,8 @@ export default function Card({
       className={classNames(
         "cru-card",
         `cru-card-${color ?? "primary"}`,
-        noBackground && "cru-card-no-background",
+        `cru-card-border-${border ?? "color"}`,
+        `cru-card-background-${background ?? "solid"}`,
         className,
       )}
       {...otherProps}
diff --git a/FrontEnd/src/views/common/button/Button.css b/FrontEnd/src/views/common/button/Button.css
index c6b180c4..1da70f0e 100644
--- a/FrontEnd/src/views/common/button/Button.css
+++ b/FrontEnd/src/views/common/button/Button.css
@@ -9,23 +9,23 @@
 
 .cru-button:not(.outline) {
   color: var(--cru-push-button-text-color);
-  background-color: var(--cru-button-normal-color);
-  border-color: var(--cru-button-normal-color);
+  background-color: var(--cru-clickable-normal-color);
+  border-color: var(--cru-clickable-normal-color);
 }
 
 .cru-button:not(.outline):hover {
-  background-color: var(--cru-button-hover-color);
-  border-color: var(--cru-button-hover-color);
+  background-color: var(--cru-clickable-hover-color);
+  border-color: var(--cru-clickable-hover-color);
 }
 
 .cru-button:not(.outline):focus {
-  background-color: var(--cru-button-focus-color);
-  border-color: var(--cru-button-focus-color);
+  background-color: var(--cru-clickable-focus-color);
+  border-color: var(--cru-clickable-focus-color);
 }
 
 .cru-button:not(.outline):active {
-  background-color: var(--cru-button-active-color);
-  border-color: var(--cru-button-active-color);
+  background-color: var(--cru-clickable-active-color);
+  border-color: var(--cru-clickable-active-color);
 }
 
 .cru-button:not(.outline):disabled {
@@ -37,28 +37,28 @@
 
 
 .cru-button.outline {
-  color: var(--cru-button-normal-color);
-  border-color: var(--cru-button-normal-color);
+  color: var(--cru-clickable-normal-color);
+  border-color: var(--cru-clickable-normal-color);
   background-color: transparent;
 }
 
 .cru-button.outline:hover {
-  color: var(--cru-button-hover-color);
-  border-color: var(--cru-button-hover-color);
+  color: var(--cru-clickable-hover-color);
+  border-color: var(--cru-clickable-hover-color);
 }
 
 .cru-button.outline:focus {
-  color: var(--cru-button-focus-color);
-  border-color: var(--cru-button-focus-color);
+  color: var(--cru-clickable-focus-color);
+  border-color: var(--cru-clickable-focus-color);
 }
 
 .cru-button.outline:active {
-  color: var(--cru-button-active-color);
-  border-color: var(--cru-button-active-color);
+  color: var(--cru-clickable-active-color);
+  border-color: var(--cru-clickable-active-color);
 }
 
 .cru-button.outline:disabled {
-  color: var(--cru-button-disabled-color);
-  border-color: var(--cru-button-disabled-color);
+  color: var(--cru-clickable-disabled-color);
+  border-color: var(--cru-clickable-disabled-color);
   cursor: auto;
-}
\ No newline at end of file
+}
diff --git a/FrontEnd/src/views/common/button/Button.tsx b/FrontEnd/src/views/common/button/Button.tsx
index 573055cf..6c38e130 100644
--- a/FrontEnd/src/views/common/button/Button.tsx
+++ b/FrontEnd/src/views/common/button/Button.tsx
@@ -34,7 +34,7 @@ export default function Button(props: ButtonProps) {
       ref={buttonRef}
       className={classNames(
         "cru-button",
-        `cru-button-${color ?? "primary"}`,
+        `cru-clickable-${color ?? "primary"}`,
         outline && "outline",
         className,
       )}
diff --git a/FrontEnd/src/views/common/button/FlatButton.css b/FrontEnd/src/views/common/button/FlatButton.css
index 7151f6de..2050946c 100644
--- a/FrontEnd/src/views/common/button/FlatButton.css
+++ b/FrontEnd/src/views/common/button/FlatButton.css
@@ -3,25 +3,25 @@
   padding: 0.4em 0.8em;
   transition: all 0.5s;
   border-radius: 0.2em;
-  background-color: var(--cru-flat-button-background-normal-color);
+  background-color: var(--cru-clickable-grayscale-normal-color);
   border: 1px none;
-  color: var(--cru-button-normal-color);
+  color: var(--cru-clickable-normal-color);
   cursor: pointer;
 }
 
 .cru-flat-button:hover {
-  background-color: var(--cru-flat-button-background-hover-color);
+  background-color: var(--cru-clickable-grayscale-hover-color);
 }
 
 .cru-flat-button:focus {
-  background-color: var(--cru-flat-button-background-focus-color);
+  background-color: var(--cru-clickable-grayscale-focus-color);
 }
 
 .cru-flat-button:active {
-  background-color: var(--cru-flat-button-background-active-color);
+  background-color: var(--cru-clickable-grayscale-active-color);
 }
 
 .cru-flat-button:disabled {
-  color: var(--cru-button-disabled-color);
+  color: var(--cru-clickable-disabled-color);
   cursor: auto;
 }
\ No newline at end of file
diff --git a/FrontEnd/src/views/common/button/FlatButton.tsx b/FrontEnd/src/views/common/button/FlatButton.tsx
index 20ca7432..9f074dd6 100644
--- a/FrontEnd/src/views/common/button/FlatButton.tsx
+++ b/FrontEnd/src/views/common/button/FlatButton.tsx
@@ -24,8 +24,8 @@ export default function FlatButton(props: FlatButtonProps) {
     <button
       ref={buttonRef}
       className={classNames(
-        `cru-button-${color ?? "primary"}`,
         "cru-flat-button",
+        `cru-clickable-${color ?? "primary"}`,
         className,
       )}
       {...otherProps}
diff --git a/FrontEnd/src/views/common/button/IconButton.css b/FrontEnd/src/views/common/button/IconButton.css
index 09f29415..a3747201 100644
--- a/FrontEnd/src/views/common/button/IconButton.css
+++ b/FrontEnd/src/views/common/button/IconButton.css
@@ -1,5 +1,5 @@
 .cru-icon-button {
-  color: var(--cru-button-normal-color);
+  color: var(--cru-clickable-normal-color);
   font-size: 1.4rem;
   background: none;
   border: none;
@@ -9,19 +9,19 @@
 }
 
 .cru-icon-button:hover {
-  color: var(--cru-button-hover-color);
+  color: var(--cru-clickable-hover-color);
 }
 
 .cru-icon-button:focus {
-  color: var(--cru-button-focus-color);
+  color: var(--cru-clickable-focus-color);
 }
 
 .cru-icon-button:active {
-  color: var(--cru-button-active-color);
+  color: var(--cru-clickable-active-color);
 }
 
 .cru-flat-button:disabled {
-  color: var(--cru-button-disabled-color);
+  color: var(--cru-clickable-disabled-color);
   cursor: auto;
 }
 
diff --git a/FrontEnd/src/views/common/button/IconButton.tsx b/FrontEnd/src/views/common/button/IconButton.tsx
index 126f4263..95c58887 100644
--- a/FrontEnd/src/views/common/button/IconButton.tsx
+++ b/FrontEnd/src/views/common/button/IconButton.tsx
@@ -7,7 +7,7 @@ import "./IconButton.css";
 
 interface IconButtonProps extends ComponentPropsWithoutRef<"i"> {
   icon: string;
-  color?: ThemeColor;
+  color?: ThemeColor | "grayscale";
   large?: boolean;
   disabled?: boolean; // TODO: Not implemented
 }
@@ -19,7 +19,7 @@ export default function IconButton(props: IconButtonProps) {
     <button
       className={classNames(
         "cru-icon-button",
-        `cru-button-${color ?? "primary"}`,
+        `cru-clickable-${color ?? "grayscale"}`,
         large && "large",
         "bi-" + icon,
         className,
diff --git a/FrontEnd/src/views/common/button/LoadingButton.css b/FrontEnd/src/views/common/button/LoadingButton.css
index 2819168e..23fadd3d 100644
--- a/FrontEnd/src/views/common/button/LoadingButton.css
+++ b/FrontEnd/src/views/common/button/LoadingButton.css
@@ -8,6 +8,6 @@
 }
 
 .cru-loading-button-loading {
-  color: var(--cru-button-normal-color) !important;
-  border-color: var(--cru-button-normal-color) !important;
-}
+  color: var(--cru-clickable-normal-color) !important;
+  border-color: var(--cru-clickable-normal-color) !important;
+}
\ No newline at end of file
diff --git a/FrontEnd/src/views/common/button/LoadingButton.tsx b/FrontEnd/src/views/common/button/LoadingButton.tsx
index 30b020cd..7e7d08e6 100644
--- a/FrontEnd/src/views/common/button/LoadingButton.tsx
+++ b/FrontEnd/src/views/common/button/LoadingButton.tsx
@@ -27,7 +27,7 @@ export default function LoadingButton(props: LoadingButtonProps) {
       disabled={disabled || loading}
       className={classNames(
         "cru-button outline cru-loading-button",
-        `cru-button-${color ?? "primary"}`,
+        `cru-clickable-${color ?? "primary"}`,
         loading && "cru-loading-button-loading",
         className,
       )}
diff --git a/FrontEnd/src/views/common/list/ListContainer.css b/FrontEnd/src/views/common/list/ListContainer.css
index 679f139d..53781834 100644
--- a/FrontEnd/src/views/common/list/ListContainer.css
+++ b/FrontEnd/src/views/common/list/ListContainer.css
@@ -1,4 +1,4 @@
 .cru-list-container {
-  border: 1px solid var(--cru-button-primary-normal-color);
+  border: 1px solid var(--cru-clickable-primary-normal-color);
   border-radius: 5px;
 }
diff --git a/FrontEnd/src/views/common/list/ListItemContainer.css b/FrontEnd/src/views/common/list/ListItemContainer.css
index 4c08a8d1..8d7afa9f 100644
--- a/FrontEnd/src/views/common/list/ListItemContainer.css
+++ b/FrontEnd/src/views/common/list/ListItemContainer.css
@@ -1,3 +1,3 @@
 .cru-list-item-container {
-  border: 1px solid var(--cru-button-primary-normal-color);
+  border: 1px solid var(--cru-clickable-primary-normal-color);
 }
diff --git a/FrontEnd/src/views/common/theme.css b/FrontEnd/src/views/common/theme.css
index b3ca7485..a3f89cc5 100644
--- a/FrontEnd/src/views/common/theme.css
+++ b/FrontEnd/src/views/common/theme.css
@@ -19,6 +19,7 @@
 /* common colors */
 :root {
   --cru-background-color: #ffffff;
+  --cru-container-background-color: hsl(0, 0%, 97%);
   --cru-text-primary-color: #000000;
   --cru-text-secondary-color: #000000;
 }
@@ -26,6 +27,7 @@
 @media (prefers-color-scheme: dark) {
   :root {
     --cru-background-color: #000000;
+    --cru-container-background-color: hsl(0, 0%, 2%);
     --cru-text-primary-color: #ffffff;
     --cru-text-secondary-color: #ffffff;
   }
@@ -35,71 +37,80 @@
   --cru-body-background-color: var(--cru-background-color);
 }
 
-/* button colors */
+/* clickable color */
 :root {
-  --cru-button-primary-normal-color: var(--cru-primary-color);
-  --cru-button-primary-hover-color: hsl(210, 100%, 60%);
-  --cru-button-primary-focus-color: hsl(210, 100%, 60%);
-  --cru-button-primary-active-color: hsl(210, 100%, 70%);
-  --cru-button-secondary-normal-color: var(--cru-secondary-color);
-  --cru-button-secondary-hover-color: hsl(30, 100%, 60%);
-  --cru-button-secondary-focus-color: hsl(30, 100%, 60%);
-  --cru-button-secondary-active-color: hsl(30, 100%, 70%);
-  --cru-button-create-normal-color: var(--cru-create-color);
-  --cru-button-create-hover-color: hsl(120, 100%, 35%);
-  --cru-button-create-focus-color: hsl(120, 100%, 35%);
-  --cru-button-create-active-color: hsl(120, 100%, 35%);
-  --cru-button-danger-normal-color: var(--cru-danger-color);
-  --cru-button-danger-hover-color: hsl(0, 100%, 60%);
-  --cru-button-danger-focus-color: hsl(0, 100%, 60%);
-  --cru-button-danger-active-color: hsl(0, 100%, 70%);
-  --cru-button-disabled-color: hsl(0, 0%, 50%);
-  /* push button colors */
-  --cru-push-button-text-color: #ffffff;
-  --cru-push-button-disabled-text-color: hsl(0, 0%, 80%);
-  /* flat button colors */
-  --cru-flat-button-background-normal-color: #ffffff;
-  --cru-flat-button-background-hover-color: hsl(0, 0%, 90%);
-  --cru-flat-button-background-focus-color: hsl(0, 0%, 90%);
-  --cru-flat-button-background-active-color: hsl(0, 0%, 80%);
+  --cru-clickable-primary-normal-color: var(--cru-primary-color);
+  --cru-clickable-primary-hover-color: hsl(210, 100%, 60%);
+  --cru-clickable-primary-focus-color: hsl(210, 100%, 60%);
+  --cru-clickable-primary-active-color: hsl(210, 100%, 70%);
+  --cru-clickable-secondary-normal-color: var(--cru-secondary-color);
+  --cru-clickable-secondary-hover-color: hsl(30, 100%, 60%);
+  --cru-clickable-secondary-focus-color: hsl(30, 100%, 60%);
+  --cru-clickable-secondary-active-color: hsl(30, 100%, 70%);
+  --cru-clickable-create-normal-color: var(--cru-create-color);
+  --cru-clickable-create-hover-color: hsl(120, 100%, 35%);
+  --cru-clickable-create-focus-color: hsl(120, 100%, 35%);
+  --cru-clickable-create-active-color: hsl(120, 100%, 35%);
+  --cru-clickable-danger-normal-color: var(--cru-danger-color);
+  --cru-clickable-danger-hover-color: hsl(0, 100%, 60%);
+  --cru-clickable-danger-focus-color: hsl(0, 100%, 60%);
+  --cru-clickable-danger-active-color: hsl(0, 100%, 70%);
+  --cru-clickable-grayscale-normal-color: hsl(0, 0%, 100%);
+  --cru-clickable-grayscale-hover-color: hsl(0, 0%, 92%);
+  --cru-clickable-grayscale-focus-color: hsl(0, 0%, 92%);
+  --cru-clickable-grayscale-active-color: hsl(0, 0%, 88%);
+  --cru-clickable-disabled-color: hsl(0, 0%, 50%);
 }
 
 @media (prefers-color-scheme: dark) {
   :root {
-    /* flat button colors */
-    --cru-flat-button-background-normal-color: #000000;
-    --cru-flat-button-background-hover-color: hsl(0, 0%, 20%);
-    --cru-flat-button-background-focus-color: hsl(0, 0%, 20%);
-    --cru-flat-button-background-active-color: hsl(0, 0%, 30%);
+    --cru-clickable-grayscale-normal-color: hsl(0, 0%, 0%);
+    --cru-clickable-grayscale-hover-color: hsl(0, 0%, 10%);
+    --cru-clickable-grayscale-focus-color: hsl(0, 0%, 10%);
+    --cru-clickable-grayscale-active-color: hsl(0, 0%, 20%);
   }
 }
 
-.cru-button-primary {
-  --cru-button-normal-color: var(--cru-button-primary-normal-color);
-  --cru-button-hover-color: var(--cru-button-primary-hover-color);
-  --cru-button-focus-color: var(--cru-button-primary-focus-color);
-  --cru-button-active-color: var(--cru-button-primary-active-color);
+.cru-clickable-primary {
+  --cru-clickable-normal-color: var(--cru-clickable-primary-normal-color);
+  --cru-clickable-hover-color: var(--cru-clickable-primary-hover-color);
+  --cru-clickable-focus-color: var(--cru-clickable-primary-focus-color);
+  --cru-clickable-active-color: var(--cru-clickable-primary-active-color);
 }
 
-.cru-button-secondary {
-  --cru-button-normal-color: var(--cru-button-secondary-normal-color);
-  --cru-button-hover-color: var(--cru-button-secondary-hover-color);
-  --cru-button-focus-color: var(--cru-button-secondary-focus-color);
-  --cru-button-active-color: var(--cru-button-secondary-active-color);
+.cru-clickable-secondary {
+  --cru-clickable-normal-color: var(--cru-clickable-secondary-normal-color);
+  --cru-clickable-hover-color: var(--cru-clickable-secondary-hover-color);
+  --cru-clickable-focus-color: var(--cru-clickable-secondary-focus-color);
+  --cru-clickable-active-color: var(--cru-clickable-secondary-active-color);
 }
 
-.cru-button-create {
-  --cru-button-normal-color: var(--cru-button-create-normal-color);
-  --cru-button-hover-color: var(--cru-button-create-hover-color);
-  --cru-button-focus-color: var(--cru-button-create-focus-color);
-  --cru-button-active-color: var(--cru-button-create-active-color);
+.cru-clickable-create {
+  --cru-clickable-normal-color: var(--cru-clickable-create-normal-color);
+  --cru-clickable-hover-color: var(--cru-clickable-create-hover-color);
+  --cru-clickable-focus-color: var(--cru-clickable-create-focus-color);
+  --cru-clickable-active-color: var(--cru-clickable-create-active-color);
 }
 
-.cru-button-danger {
-  --cru-button-normal-color: var(--cru-button-danger-normal-color);
-  --cru-button-hover-color: var(--cru-button-danger-hover-color);
-  --cru-button-focus-color: var(--cru-button-danger-focus-color);
-  --cru-button-active-color: var(--cru-button-danger-active-color);
+.cru-clickable-danger {
+  --cru-clickable-normal-color: var(--cru-clickable-danger-normal-color);
+  --cru-clickable-hover-color: var(--cru-clickable-danger-hover-color);
+  --cru-clickable-focus-color: var(--cru-clickable-danger-focus-color);
+  --cru-clickable-active-color: var(--cru-clickable-danger-active-color);
+}
+
+.cru-clickable-grayscale {
+  --cru-clickable-normal-color: var(--cru-clickable-grayscale-normal-color);
+  --cru-clickable-hover-color: var(--cru-clickable-grayscale-hover-color);
+  --cru-clickable-focus-color: var(--cru-clickable-grayscale-focus-color);
+  --cru-clickable-active-color: var(--cru-clickable-grayscale-active-color);
+}
+
+/* button colors */
+:root {
+  /* push button colors */
+  --cru-push-button-text-color: #ffffff;
+  --cru-push-button-disabled-text-color: hsl(0, 0%, 80%);
 }
 
 /* Card colors */
-- 
cgit v1.2.3


From f5dfd52f6efece2f4cad227044ecf4dd66301bbc Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Sat, 26 Aug 2023 21:36:58 +0800
Subject: ...

---
 FrontEnd/src/App.tsx                               |   4 +-
 FrontEnd/src/components/AppBar.css                 |  87 ++++
 FrontEnd/src/components/AppBar.tsx                 |  98 +++++
 FrontEnd/src/components/BlobImage.tsx              |  26 ++
 FrontEnd/src/components/Card.css                   |  20 +
 FrontEnd/src/components/Card.tsx                   |  38 ++
 FrontEnd/src/components/Icon.css                   |   3 +
 FrontEnd/src/components/Icon.tsx                   |  30 ++
 FrontEnd/src/components/ImageCropper.css           |  38 ++
 FrontEnd/src/components/ImageCropper.tsx           | 312 ++++++++++++++
 FrontEnd/src/components/LoadFailReload.tsx         |  37 ++
 FrontEnd/src/components/LoadingPage.tsx            |  13 +
 FrontEnd/src/components/Page.tsx                   |  15 +
 FrontEnd/src/components/SearchInput.css            |   8 +
 FrontEnd/src/components/SearchInput.tsx            |  50 +++
 FrontEnd/src/components/Skeleton.css               |  14 +
 FrontEnd/src/components/Skeleton.tsx               |  32 ++
 FrontEnd/src/components/Spinner.css                |  13 +
 FrontEnd/src/components/Spinner.tsx                |  36 ++
 FrontEnd/src/components/TimelineLogo.tsx           |  27 ++
 FrontEnd/src/components/alert/AlertHost.tsx        | 113 +++++
 FrontEnd/src/components/alert/alert.css            |  33 ++
 FrontEnd/src/components/breakpoints.ts             |   3 +
 FrontEnd/src/components/button/Button.css          |  64 +++
 FrontEnd/src/components/button/Button.tsx          |  46 ++
 FrontEnd/src/components/button/ButtonRow.css       |   0
 FrontEnd/src/components/button/ButtonRow.tsx       |  62 +++
 FrontEnd/src/components/button/ButtonRowV2.tsx     | 143 +++++++
 FrontEnd/src/components/button/FlatButton.css      |  27 ++
 FrontEnd/src/components/button/FlatButton.tsx      |  36 ++
 FrontEnd/src/components/button/IconButton.css      |  30 ++
 FrontEnd/src/components/button/IconButton.tsx      |  30 ++
 FrontEnd/src/components/button/LoadingButton.css   |  13 +
 FrontEnd/src/components/button/LoadingButton.tsx   |  40 ++
 FrontEnd/src/components/button/index.tsx           |  15 +
 FrontEnd/src/components/common.ts                  |  14 +
 FrontEnd/src/components/dialog/ConfirmDialog.css   |   0
 FrontEnd/src/components/dialog/ConfirmDialog.tsx   |  59 +++
 FrontEnd/src/components/dialog/Dialog.css          |  60 +++
 FrontEnd/src/components/dialog/Dialog.tsx          |  63 +++
 FrontEnd/src/components/dialog/DialogContainer.css |  20 +
 FrontEnd/src/components/dialog/DialogContainer.tsx |  95 +++++
 FrontEnd/src/components/dialog/FullPageDialog.css  |  44 ++
 FrontEnd/src/components/dialog/FullPageDialog.tsx  |  53 +++
 FrontEnd/src/components/dialog/OperationDialog.css |   8 +
 FrontEnd/src/components/dialog/OperationDialog.tsx | 230 ++++++++++
 FrontEnd/src/components/dialog/index.ts            |  64 +++
 FrontEnd/src/components/hooks.ts                   |  14 +
 FrontEnd/src/components/index.css                  | 100 +++++
 FrontEnd/src/components/input/InputGroup.css       |  54 +++
 FrontEnd/src/components/input/InputGroup.tsx       | 463 +++++++++++++++++++++
 FrontEnd/src/components/input/index.ts             |  11 +
 FrontEnd/src/components/list/ListContainer.css     |   4 +
 FrontEnd/src/components/list/ListContainer.tsx     |  23 +
 FrontEnd/src/components/list/ListItemContainer.css |   3 +
 FrontEnd/src/components/list/ListItemContainer.tsx |  23 +
 FrontEnd/src/components/list/index.ts              |   4 +
 FrontEnd/src/components/menu/Menu.css              |  36 ++
 FrontEnd/src/components/menu/Menu.tsx              |  62 +++
 FrontEnd/src/components/menu/PopupMenu.css         |   7 +
 FrontEnd/src/components/menu/PopupMenu.tsx         |  73 ++++
 FrontEnd/src/components/tab/TabPages.tsx           |  71 ++++
 FrontEnd/src/components/tab/Tabs.css               |  33 ++
 FrontEnd/src/components/tab/Tabs.tsx               |  62 +++
 FrontEnd/src/components/theme-color.css            | 173 ++++++++
 FrontEnd/src/components/theme.css                  | 146 +++++++
 FrontEnd/src/components/user/UserAvatar.tsx        |  22 +
 FrontEnd/src/http/bookmark.ts                      |   2 +-
 FrontEnd/src/http/timeline.ts                      |   2 +-
 FrontEnd/src/migrating/center/CenterBoards.tsx     |  10 +-
 FrontEnd/src/migrating/center/TimelineBoard.tsx    |   2 +-
 .../src/migrating/center/TimelineCreateDialog.tsx  |   6 +-
 FrontEnd/src/migrating/center/index.tsx            |   2 +-
 FrontEnd/src/pages/about/index.tsx                 |   4 +-
 FrontEnd/src/pages/loading/index.tsx               |   2 +-
 FrontEnd/src/pages/login/index.tsx                 |  10 +-
 FrontEnd/src/pages/register/index.tsx              |  10 +-
 FrontEnd/src/pages/setting/ChangeAvatarDialog.tsx  |  16 +-
 .../src/pages/setting/ChangeNicknameDialog.tsx     |   8 +-
 .../src/pages/setting/ChangePasswordDialog.tsx     |   9 +-
 FrontEnd/src/pages/setting/index.tsx               |  18 +-
 FrontEnd/src/pages/timeline/CollapseButton.tsx     |   2 +-
 FrontEnd/src/pages/timeline/MarkdownPostEdit.tsx   |  14 +-
 FrontEnd/src/pages/timeline/Timeline.tsx           |   8 +-
 FrontEnd/src/pages/timeline/TimelineCard.tsx       |  22 +-
 .../src/pages/timeline/TimelineDeleteDialog.tsx    |   4 +-
 FrontEnd/src/pages/timeline/TimelineMember.tsx     |  16 +-
 FrontEnd/src/pages/timeline/TimelinePostCard.tsx   |   2 +-
 .../src/pages/timeline/TimelinePostContentView.tsx |  12 +-
 .../src/pages/timeline/TimelinePostCreateView.tsx  |  16 +-
 FrontEnd/src/pages/timeline/TimelinePostList.tsx   |   2 +-
 FrontEnd/src/pages/timeline/TimelinePostView.tsx   |  16 +-
 .../timeline/TimelinePropertyChangeDialog.tsx      |  10 +-
 FrontEnd/src/pages/timeline/index.tsx              |   2 +-
 FrontEnd/src/services/TimelinePostBuilder.ts       |   6 +-
 FrontEnd/src/services/alert.ts                     |   4 +-
 FrontEnd/src/services/timeline.ts                  |   4 +-
 FrontEnd/src/services/user.ts                      |   8 +-
 FrontEnd/src/views/common/AppBar.css               |  87 ----
 FrontEnd/src/views/common/AppBar.tsx               |  98 -----
 FrontEnd/src/views/common/BlobImage.tsx            |  26 --
 FrontEnd/src/views/common/Card.css                 |  20 -
 FrontEnd/src/views/common/Card.tsx                 |  38 --
 FrontEnd/src/views/common/Icon.css                 |   3 -
 FrontEnd/src/views/common/Icon.tsx                 |  30 --
 FrontEnd/src/views/common/ImageCropper.css         |  38 --
 FrontEnd/src/views/common/ImageCropper.tsx         | 312 --------------
 FrontEnd/src/views/common/LoadFailReload.tsx       |  37 --
 FrontEnd/src/views/common/LoadingPage.tsx          |  13 -
 FrontEnd/src/views/common/Page.tsx                 |  15 -
 FrontEnd/src/views/common/SearchInput.css          |   8 -
 FrontEnd/src/views/common/SearchInput.tsx          |  50 ---
 FrontEnd/src/views/common/Skeleton.css             |  14 -
 FrontEnd/src/views/common/Skeleton.tsx             |  32 --
 FrontEnd/src/views/common/Spinner.css              |  13 -
 FrontEnd/src/views/common/Spinner.tsx              |  36 --
 FrontEnd/src/views/common/TimelineLogo.tsx         |  27 --
 FrontEnd/src/views/common/alert/AlertHost.tsx      | 113 -----
 FrontEnd/src/views/common/alert/alert.css          |  33 --
 FrontEnd/src/views/common/breakpoints.ts           |   3 -
 FrontEnd/src/views/common/button/Button.css        |  64 ---
 FrontEnd/src/views/common/button/Button.tsx        |  46 --
 FrontEnd/src/views/common/button/ButtonRow.css     |   0
 FrontEnd/src/views/common/button/ButtonRow.tsx     |  62 ---
 FrontEnd/src/views/common/button/ButtonRowV2.tsx   | 143 -------
 FrontEnd/src/views/common/button/FlatButton.css    |  27 --
 FrontEnd/src/views/common/button/FlatButton.tsx    |  36 --
 FrontEnd/src/views/common/button/IconButton.css    |  30 --
 FrontEnd/src/views/common/button/IconButton.tsx    |  30 --
 FrontEnd/src/views/common/button/LoadingButton.css |  13 -
 FrontEnd/src/views/common/button/LoadingButton.tsx |  40 --
 FrontEnd/src/views/common/button/index.tsx         |  15 -
 FrontEnd/src/views/common/common.ts                |  14 -
 FrontEnd/src/views/common/dialog/ConfirmDialog.css |   0
 FrontEnd/src/views/common/dialog/ConfirmDialog.tsx |  59 ---
 FrontEnd/src/views/common/dialog/Dialog.css        |  60 ---
 FrontEnd/src/views/common/dialog/Dialog.tsx        |  63 ---
 .../src/views/common/dialog/DialogContainer.css    |  20 -
 .../src/views/common/dialog/DialogContainer.tsx    |  95 -----
 .../src/views/common/dialog/FullPageDialog.css     |  44 --
 .../src/views/common/dialog/FullPageDialog.tsx     |  53 ---
 .../src/views/common/dialog/OperationDialog.css    |   8 -
 .../src/views/common/dialog/OperationDialog.tsx    | 228 ----------
 FrontEnd/src/views/common/dialog/index.ts          |  64 ---
 FrontEnd/src/views/common/hooks.ts                 |  14 -
 FrontEnd/src/views/common/index.css                | 100 -----
 FrontEnd/src/views/common/input/InputGroup.css     |  54 ---
 FrontEnd/src/views/common/input/InputGroup.tsx     | 461 --------------------
 FrontEnd/src/views/common/list/ListContainer.css   |   4 -
 FrontEnd/src/views/common/list/ListContainer.tsx   |  23 -
 .../src/views/common/list/ListItemContainer.css    |   3 -
 .../src/views/common/list/ListItemContainer.tsx    |  23 -
 FrontEnd/src/views/common/list/index.ts            |   4 -
 FrontEnd/src/views/common/menu/Menu.css            |  36 --
 FrontEnd/src/views/common/menu/Menu.tsx            |  62 ---
 FrontEnd/src/views/common/menu/PopupMenu.css       |   7 -
 FrontEnd/src/views/common/menu/PopupMenu.tsx       |  73 ----
 FrontEnd/src/views/common/tab/TabPages.tsx         |  71 ----
 FrontEnd/src/views/common/tab/Tabs.css             |  33 --
 FrontEnd/src/views/common/tab/Tabs.tsx             |  62 ---
 FrontEnd/src/views/common/theme-color.css          | 173 --------
 FrontEnd/src/views/common/theme.css                | 146 -------
 FrontEnd/src/views/common/user/UserAvatar.tsx      |  22 -
 FrontEnd/tsconfig.json                             |   3 -
 164 files changed, 3771 insertions(+), 3762 deletions(-)
 create mode 100644 FrontEnd/src/components/AppBar.css
 create mode 100644 FrontEnd/src/components/AppBar.tsx
 create mode 100644 FrontEnd/src/components/BlobImage.tsx
 create mode 100644 FrontEnd/src/components/Card.css
 create mode 100644 FrontEnd/src/components/Card.tsx
 create mode 100644 FrontEnd/src/components/Icon.css
 create mode 100644 FrontEnd/src/components/Icon.tsx
 create mode 100644 FrontEnd/src/components/ImageCropper.css
 create mode 100644 FrontEnd/src/components/ImageCropper.tsx
 create mode 100644 FrontEnd/src/components/LoadFailReload.tsx
 create mode 100644 FrontEnd/src/components/LoadingPage.tsx
 create mode 100644 FrontEnd/src/components/Page.tsx
 create mode 100644 FrontEnd/src/components/SearchInput.css
 create mode 100644 FrontEnd/src/components/SearchInput.tsx
 create mode 100644 FrontEnd/src/components/Skeleton.css
 create mode 100644 FrontEnd/src/components/Skeleton.tsx
 create mode 100644 FrontEnd/src/components/Spinner.css
 create mode 100644 FrontEnd/src/components/Spinner.tsx
 create mode 100644 FrontEnd/src/components/TimelineLogo.tsx
 create mode 100644 FrontEnd/src/components/alert/AlertHost.tsx
 create mode 100644 FrontEnd/src/components/alert/alert.css
 create mode 100644 FrontEnd/src/components/breakpoints.ts
 create mode 100644 FrontEnd/src/components/button/Button.css
 create mode 100644 FrontEnd/src/components/button/Button.tsx
 create mode 100644 FrontEnd/src/components/button/ButtonRow.css
 create mode 100644 FrontEnd/src/components/button/ButtonRow.tsx
 create mode 100644 FrontEnd/src/components/button/ButtonRowV2.tsx
 create mode 100644 FrontEnd/src/components/button/FlatButton.css
 create mode 100644 FrontEnd/src/components/button/FlatButton.tsx
 create mode 100644 FrontEnd/src/components/button/IconButton.css
 create mode 100644 FrontEnd/src/components/button/IconButton.tsx
 create mode 100644 FrontEnd/src/components/button/LoadingButton.css
 create mode 100644 FrontEnd/src/components/button/LoadingButton.tsx
 create mode 100644 FrontEnd/src/components/button/index.tsx
 create mode 100644 FrontEnd/src/components/common.ts
 create mode 100644 FrontEnd/src/components/dialog/ConfirmDialog.css
 create mode 100644 FrontEnd/src/components/dialog/ConfirmDialog.tsx
 create mode 100644 FrontEnd/src/components/dialog/Dialog.css
 create mode 100644 FrontEnd/src/components/dialog/Dialog.tsx
 create mode 100644 FrontEnd/src/components/dialog/DialogContainer.css
 create mode 100644 FrontEnd/src/components/dialog/DialogContainer.tsx
 create mode 100644 FrontEnd/src/components/dialog/FullPageDialog.css
 create mode 100644 FrontEnd/src/components/dialog/FullPageDialog.tsx
 create mode 100644 FrontEnd/src/components/dialog/OperationDialog.css
 create mode 100644 FrontEnd/src/components/dialog/OperationDialog.tsx
 create mode 100644 FrontEnd/src/components/dialog/index.ts
 create mode 100644 FrontEnd/src/components/hooks.ts
 create mode 100644 FrontEnd/src/components/index.css
 create mode 100644 FrontEnd/src/components/input/InputGroup.css
 create mode 100644 FrontEnd/src/components/input/InputGroup.tsx
 create mode 100644 FrontEnd/src/components/input/index.ts
 create mode 100644 FrontEnd/src/components/list/ListContainer.css
 create mode 100644 FrontEnd/src/components/list/ListContainer.tsx
 create mode 100644 FrontEnd/src/components/list/ListItemContainer.css
 create mode 100644 FrontEnd/src/components/list/ListItemContainer.tsx
 create mode 100644 FrontEnd/src/components/list/index.ts
 create mode 100644 FrontEnd/src/components/menu/Menu.css
 create mode 100644 FrontEnd/src/components/menu/Menu.tsx
 create mode 100644 FrontEnd/src/components/menu/PopupMenu.css
 create mode 100644 FrontEnd/src/components/menu/PopupMenu.tsx
 create mode 100644 FrontEnd/src/components/tab/TabPages.tsx
 create mode 100644 FrontEnd/src/components/tab/Tabs.css
 create mode 100644 FrontEnd/src/components/tab/Tabs.tsx
 create mode 100644 FrontEnd/src/components/theme-color.css
 create mode 100644 FrontEnd/src/components/theme.css
 create mode 100644 FrontEnd/src/components/user/UserAvatar.tsx
 delete mode 100644 FrontEnd/src/views/common/AppBar.css
 delete mode 100644 FrontEnd/src/views/common/AppBar.tsx
 delete mode 100644 FrontEnd/src/views/common/BlobImage.tsx
 delete mode 100644 FrontEnd/src/views/common/Card.css
 delete mode 100644 FrontEnd/src/views/common/Card.tsx
 delete mode 100644 FrontEnd/src/views/common/Icon.css
 delete mode 100644 FrontEnd/src/views/common/Icon.tsx
 delete mode 100644 FrontEnd/src/views/common/ImageCropper.css
 delete mode 100644 FrontEnd/src/views/common/ImageCropper.tsx
 delete mode 100644 FrontEnd/src/views/common/LoadFailReload.tsx
 delete mode 100644 FrontEnd/src/views/common/LoadingPage.tsx
 delete mode 100644 FrontEnd/src/views/common/Page.tsx
 delete mode 100644 FrontEnd/src/views/common/SearchInput.css
 delete mode 100644 FrontEnd/src/views/common/SearchInput.tsx
 delete mode 100644 FrontEnd/src/views/common/Skeleton.css
 delete mode 100644 FrontEnd/src/views/common/Skeleton.tsx
 delete mode 100644 FrontEnd/src/views/common/Spinner.css
 delete mode 100644 FrontEnd/src/views/common/Spinner.tsx
 delete mode 100644 FrontEnd/src/views/common/TimelineLogo.tsx
 delete mode 100644 FrontEnd/src/views/common/alert/AlertHost.tsx
 delete mode 100644 FrontEnd/src/views/common/alert/alert.css
 delete mode 100644 FrontEnd/src/views/common/breakpoints.ts
 delete mode 100644 FrontEnd/src/views/common/button/Button.css
 delete mode 100644 FrontEnd/src/views/common/button/Button.tsx
 delete mode 100644 FrontEnd/src/views/common/button/ButtonRow.css
 delete mode 100644 FrontEnd/src/views/common/button/ButtonRow.tsx
 delete mode 100644 FrontEnd/src/views/common/button/ButtonRowV2.tsx
 delete mode 100644 FrontEnd/src/views/common/button/FlatButton.css
 delete mode 100644 FrontEnd/src/views/common/button/FlatButton.tsx
 delete mode 100644 FrontEnd/src/views/common/button/IconButton.css
 delete mode 100644 FrontEnd/src/views/common/button/IconButton.tsx
 delete mode 100644 FrontEnd/src/views/common/button/LoadingButton.css
 delete mode 100644 FrontEnd/src/views/common/button/LoadingButton.tsx
 delete mode 100644 FrontEnd/src/views/common/button/index.tsx
 delete mode 100644 FrontEnd/src/views/common/common.ts
 delete mode 100644 FrontEnd/src/views/common/dialog/ConfirmDialog.css
 delete mode 100644 FrontEnd/src/views/common/dialog/ConfirmDialog.tsx
 delete mode 100644 FrontEnd/src/views/common/dialog/Dialog.css
 delete mode 100644 FrontEnd/src/views/common/dialog/Dialog.tsx
 delete mode 100644 FrontEnd/src/views/common/dialog/DialogContainer.css
 delete mode 100644 FrontEnd/src/views/common/dialog/DialogContainer.tsx
 delete mode 100644 FrontEnd/src/views/common/dialog/FullPageDialog.css
 delete mode 100644 FrontEnd/src/views/common/dialog/FullPageDialog.tsx
 delete mode 100644 FrontEnd/src/views/common/dialog/OperationDialog.css
 delete mode 100644 FrontEnd/src/views/common/dialog/OperationDialog.tsx
 delete mode 100644 FrontEnd/src/views/common/dialog/index.ts
 delete mode 100644 FrontEnd/src/views/common/hooks.ts
 delete mode 100644 FrontEnd/src/views/common/index.css
 delete mode 100644 FrontEnd/src/views/common/input/InputGroup.css
 delete mode 100644 FrontEnd/src/views/common/input/InputGroup.tsx
 delete mode 100644 FrontEnd/src/views/common/list/ListContainer.css
 delete mode 100644 FrontEnd/src/views/common/list/ListContainer.tsx
 delete mode 100644 FrontEnd/src/views/common/list/ListItemContainer.css
 delete mode 100644 FrontEnd/src/views/common/list/ListItemContainer.tsx
 delete mode 100644 FrontEnd/src/views/common/list/index.ts
 delete mode 100644 FrontEnd/src/views/common/menu/Menu.css
 delete mode 100644 FrontEnd/src/views/common/menu/Menu.tsx
 delete mode 100644 FrontEnd/src/views/common/menu/PopupMenu.css
 delete mode 100644 FrontEnd/src/views/common/menu/PopupMenu.tsx
 delete mode 100644 FrontEnd/src/views/common/tab/TabPages.tsx
 delete mode 100644 FrontEnd/src/views/common/tab/Tabs.css
 delete mode 100644 FrontEnd/src/views/common/tab/Tabs.tsx
 delete mode 100644 FrontEnd/src/views/common/theme-color.css
 delete mode 100644 FrontEnd/src/views/common/theme.css
 delete mode 100644 FrontEnd/src/views/common/user/UserAvatar.tsx

(limited to 'FrontEnd/src/pages/timeline/TimelinePostView.tsx')

diff --git a/FrontEnd/src/App.tsx b/FrontEnd/src/App.tsx
index 6029daac..b5b076ec 100644
--- a/FrontEnd/src/App.tsx
+++ b/FrontEnd/src/App.tsx
@@ -1,7 +1,7 @@
 import { Suspense } from "react";
 import { BrowserRouter, Route, Routes } from "react-router-dom";
 
-import AppBar from "./views/common/AppBar";
+import AppBar from "./components/AppBar";
 import NotFoundPage from "./pages/404";
 import HomePage from "./pages/home";
 import AboutPage from "./pages/about";
@@ -10,7 +10,7 @@ import LoginPage from "./pages/login";
 import RegisterPage from "./pages/register";
 import TimelinePage from "./pages/timeline";
 import LoadingPage from "./pages/loading";
-import AlertHost from "./views/common/alert/AlertHost";
+import AlertHost from "./components/alert/AlertHost";
 
 export default function App() {
   return (
diff --git a/FrontEnd/src/components/AppBar.css b/FrontEnd/src/components/AppBar.css
new file mode 100644
index 00000000..a0d975b5
--- /dev/null
+++ b/FrontEnd/src/components/AppBar.css
@@ -0,0 +1,87 @@
+.app-bar {
+  height: 56px;
+  position: fixed;
+  z-index: 1030;
+  top: 0;
+  left: 0;
+  right: 0;
+  background-color: var(--cru-primary-color);
+}
+
+.app-bar {
+  display: flex;
+}
+
+.app-bar .app-bar-brand {
+  display: flex;
+  align-items: center;
+}
+
+.app-bar .app-bar-brand-icon {
+  height: 2em;
+}
+
+.app-bar .app-bar-user-area {
+  display: flex;
+  margin-left: auto;
+}
+
+.app-bar a {
+  background-color: var(--cru-primary-color);
+  color: var(--cru-push-button-text-color);
+  text-decoration: none;
+  display: flex;
+  align-items: center;
+  padding: 0 1em;
+  transition: all 0.5s;
+}
+
+.app-bar a:hover {
+  background-color: var(--cru-clickable-primary-hover-color);
+}
+
+.app-bar a:focus {
+  background-color: var(--cru-clickable-primary-focus-color);
+}
+
+.app-bar a:active {
+  background-color: var(--cru-clickable-primary-active-color);
+}
+
+/* the current page */
+.app-bar a.active {
+  background-color: var(--cru-clickable-primary-focus-color);
+}
+
+.app-bar .app-bar-avatar img {
+  width: 45px;
+  height: 45px;
+  background-color: white;
+  border-radius: 50%;
+}
+
+.app-bar.desktop .app-bar-link-area {
+  display: flex;
+}
+
+.app-bar.mobile .app-bar-link-area {
+  position: absolute;
+  z-index: -1;
+  top: 56px;
+  left: 0;
+  right: 0;
+  transition: transform 0.5s;
+}
+
+.app-bar.mobile a {
+  height: 56px;
+}
+
+.app-bar.mobile.collapse .app-bar-link-area {
+  transform: translateY(-100%);
+}
+
+.app-bar .toggler {
+  font-size: 2em;
+  margin-right: 0.5em;
+}
\ No newline at end of file
diff --git a/FrontEnd/src/components/AppBar.tsx b/FrontEnd/src/components/AppBar.tsx
new file mode 100644
index 00000000..da3a946f
--- /dev/null
+++ b/FrontEnd/src/components/AppBar.tsx
@@ -0,0 +1,98 @@
+import { useState } from "react";
+import classnames from "classnames";
+import { Link, NavLink } from "react-router-dom";
+
+import { I18nText, useC, useMobile } from "./common";
+import { useUser } from "~src/services/user";
+
+import TimelineLogo from "./TimelineLogo";
+import { IconButton } from "./button";
+import UserAvatar from "./user/UserAvatar";
+
+import "./AppBar.css";
+
+function AppBarNavLink({
+  link,
+  className,
+  label,
+  onClick,
+  children,
+}: {
+  link: string;
+  className?: string;
+  label?: I18nText;
+  onClick?: () => void;
+  children?: React.ReactNode;
+}) {
+  if (label != null && children != null) {
+    throw new Error("AppBarNavLink: label and children cannot be both set");
+  }
+
+  const c = useC();
+
+  return (
+    <NavLink
+      to={link}
+      className={({ isActive }) => classnames(className, isActive && "active")}
+      onClick={onClick}
+    >
+      {children != null ? children : c(label)}
+    </NavLink>
+  );
+}
+
+export default function AppBar() {
+  const isMobile = useMobile();
+
+  const [isCollapse, setIsCollapse] = useState<boolean>(true);
+  const collapse = isMobile ? () => setIsCollapse(true) : undefined;
+  const toggleCollapse = () => setIsCollapse(!isCollapse);
+
+  const user = useUser();
+  const hasAdministrationPermission = user && user.hasAdministrationPermission;
+
+  return (
+    <nav
+      className={classnames(
+        isMobile ? "mobile" : "desktop",
+        "app-bar",
+        isCollapse && "collapse",
+      )}
+    >
+      <Link to="/" className="app-bar-brand" onClick={collapse}>
+        <TimelineLogo className="app-bar-brand-icon" />
+        Timeline
+      </Link>
+
+      <div className="app-bar-link-area">
+        <AppBarNavLink
+          link="/settings"
+          label="nav.settings"
+          onClick={collapse}
+        />
+        <AppBarNavLink link="/about" label="nav.about" onClick={collapse} />
+        {hasAdministrationPermission && (
+          <AppBarNavLink
+            link="/admin"
+            label="nav.administration"
+            onClick={collapse}
+          />
+        )}
+      </div>
+
+      <div className="app-bar-user-area">
+        {user != null ? (
+          <AppBarNavLink link="/" className="app-bar-avatar" onClick={collapse}>
+            <UserAvatar username={user.username} />
+          </AppBarNavLink>
+        ) : (
+          <AppBarNavLink link="/login" label="nav.login" onClick={collapse} />
+        )}
+      </div>
+
+      {isMobile && (
+        <IconButton icon="list" className="toggler" onClick={toggleCollapse} />
+      )}
+    </nav>
+  );
+}
diff --git a/FrontEnd/src/components/BlobImage.tsx b/FrontEnd/src/components/BlobImage.tsx
new file mode 100644
index 00000000..259c2210
--- /dev/null
+++ b/FrontEnd/src/components/BlobImage.tsx
@@ -0,0 +1,26 @@
+import { ComponentPropsWithoutRef, useState, useEffect } from "react";
+
+type BlobImageProps = Omit<ComponentPropsWithoutRef<"img">, "src"> & {
+  imgRef?: React.Ref<HTMLImageElement>;
+  src?: Blob | string | null;
+};
+
+export default function BlobImage(props: BlobImageProps) {
+  const { imgRef, src, ...otherProps } = props;
+
+  const [url, setUrl] = useState<string | null | undefined>(undefined);
+
+  useEffect(() => {
+    if (src instanceof Blob) {
+      const url = URL.createObjectURL(src);
+      setUrl(url);
+      return () => {
+        URL.revokeObjectURL(url);
+      };
+    } else {
+      setUrl(src);
+    }
+  }, [src]);
+
+  return <img ref={imgRef} {...otherProps} src={url ?? undefined} />;
+}
diff --git a/FrontEnd/src/components/Card.css b/FrontEnd/src/components/Card.css
new file mode 100644
index 00000000..6d655eb9
--- /dev/null
+++ b/FrontEnd/src/components/Card.css
@@ -0,0 +1,20 @@
+.cru-card {
+  border-radius: var(--cru-card-border-radius);
+  transition: all 0.3s;
+}
+
+.cru-card-background-none {
+  background-color: transparent;
+}
+
+.cru-card-background-solid {
+  background-color: var(--cru-background-color);
+}
+
+.cru-card-background-grayscale {
+  background-color: var(--cru-container-background-color);
+}
+
+.cru-card-border-color {
+  border: 2px solid var(--cru-card-border-color);
+}
diff --git a/FrontEnd/src/components/Card.tsx b/FrontEnd/src/components/Card.tsx
new file mode 100644
index 00000000..a8f0d3cc
--- /dev/null
+++ b/FrontEnd/src/components/Card.tsx
@@ -0,0 +1,38 @@
+import { ComponentPropsWithoutRef, Ref } from "react";
+import classNames from "classnames";
+
+import { ThemeColor } from "./common";
+import "./Card.css";
+
+interface CardProps extends ComponentPropsWithoutRef<"div"> {
+  containerRef?: Ref<HTMLDivElement>;
+  color?: ThemeColor;
+  border?: "color" | "none";
+  background?: "color" | "solid" | "grayscale" | "none";
+}
+
+export default function Card({
+  color,
+  background,
+  border,
+  className,
+  children,
+  containerRef,
+  ...otherProps
+}: CardProps) {
+  return (
+    <div
+      ref={containerRef}
+      className={classNames(
+        "cru-card",
+        `cru-card-${color ?? "primary"}`,
+        `cru-card-border-${border ?? "color"}`,
+        `cru-card-background-${background ?? "solid"}`,
+        className,
+      )}
+      {...otherProps}
+    >
+      {children}
+    </div>
+  );
+}
diff --git a/FrontEnd/src/components/Icon.css b/FrontEnd/src/components/Icon.css
new file mode 100644
index 00000000..fe980d7b
--- /dev/null
+++ b/FrontEnd/src/components/Icon.css
@@ -0,0 +1,3 @@
+.cru-icon {
+  font-size: 1.4rem;
+}
diff --git a/FrontEnd/src/components/Icon.tsx b/FrontEnd/src/components/Icon.tsx
new file mode 100644
index 00000000..2ac3a7ca
--- /dev/null
+++ b/FrontEnd/src/components/Icon.tsx
@@ -0,0 +1,30 @@
+import { ComponentPropsWithoutRef } from "react";
+import classNames from "classnames";
+
+import { ThemeColor } from "./common";
+
+import "./Icon.css";
+
+interface IconButtonProps extends ComponentPropsWithoutRef<"i"> {
+  icon: string;
+  color?: ThemeColor | "on-surface";
+  size?: string | number;
+}
+
+export default function Icon(props: IconButtonProps) {
+  const { icon, color, size, style, className, ...otherProps } = props;
+
+  const colorName = color === "on-surface" ? "surface-on" : color;
+
+  return (
+    <i
+      style={size != null ? { ...style, fontSize: size } : style}
+      className={classNames(
+        colorName && `cru-${colorName}`,
+        `bi-${icon} cru-icon`,
+        className,
+      )}
+      {...otherProps}
+    />
+  );
+}
diff --git a/FrontEnd/src/components/ImageCropper.css b/FrontEnd/src/components/ImageCropper.css
new file mode 100644
index 00000000..2c4d0a8c
--- /dev/null
+++ b/FrontEnd/src/components/ImageCropper.css
@@ -0,0 +1,38 @@
+.image-cropper-container {
+  position: relative;
+  box-sizing: border-box;
+  user-select: none;
+}
+
+.image-cropper-container img {
+  position: absolute;
+  left: 0;
+  top: 0;
+  width: 100%;
+  height: 100%;
+}
+
+.image-cropper-mask-container {
+  position: absolute;
+  left: 0;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  overflow: hidden;
+}
+
+.image-cropper-mask {
+  position: absolute;
+  box-shadow: 0 0 0 10000px rgba(255, 255, 255, 0.8);
+  touch-action: none;
+}
+
+.image-cropper-handler {
+  position: absolute;
+  width: 26px;
+  height: 26px;
+  border: black solid 2px;
+  border-radius: 50%;
+  background: white;
+  touch-action: none;
+}
diff --git a/FrontEnd/src/components/ImageCropper.tsx b/FrontEnd/src/components/ImageCropper.tsx
new file mode 100644
index 00000000..f23994e2
--- /dev/null
+++ b/FrontEnd/src/components/ImageCropper.tsx
@@ -0,0 +1,312 @@
+import * as React from "react";
+import classnames from "classnames";
+
+import { UiLogicError } from "~src/common";
+
+import "./ImageCropper.css";
+import BlobImage from "./BlobImage";
+
+export interface Clip {
+  left: number;
+  top: number;
+  width: number;
+}
+
+interface NormailizedClip extends Clip {
+  height: number;
+}
+
+interface ImageInfo {
+  width: number;
+  height: number;
+  landscape: boolean;
+  ratio: number;
+  maxClipWidth: number;
+  maxClipHeight: number;
+}
+
+interface ImageCropperSavedState {
+  clip: NormailizedClip;
+  x: number;
+  y: number;
+  pointerId: number;
+}
+
+export interface ImageCropperProps {
+  clip: Clip | null;
+  image: string | Blob;
+  onChange: (clip: Clip) => void;
+  imageElementCallback?: (element: HTMLImageElement | null) => void;
+  className?: string;
+}
+
+const ImageCropper = (props: ImageCropperProps): React.ReactElement => {
+  const { clip, image, onChange, imageElementCallback, className } = props;
+
+  const [oldState, setOldState] = React.useState<ImageCropperSavedState | null>(
+    null,
+  );
+  const [imageInfo, setImageInfo] = React.useState<ImageInfo | null>(null);
+
+  const normalizeClip = (c: Clip | null | undefined): NormailizedClip => {
+    if (c == null) {
+      return { left: 0, top: 0, width: 0, height: 0 };
+    }
+
+    return {
+      left: c.left || 0,
+      top: c.top || 0,
+      width: c.width || 0,
+      height: imageInfo != null ? (c.width || 0) / imageInfo.ratio : 0,
+    };
+  };
+
+  const c = normalizeClip(clip);
+
+  const imgElementRef = React.useRef<HTMLImageElement | null>(null);
+
+  const onImageRef = React.useCallback(
+    (e: HTMLImageElement | null) => {
+      imgElementRef.current = e;
+      if (imageElementCallback != null && e == null) {
+        imageElementCallback(null);
+      }
+    },
+    [imageElementCallback],
+  );
+
+  const onImageLoad = React.useCallback(
+    (e: React.SyntheticEvent<HTMLImageElement>) => {
+      const img = e.currentTarget;
+      const landscape = img.naturalWidth >= img.naturalHeight;
+
+      const info = {
+        width: img.naturalWidth,
+        height: img.naturalHeight,
+        landscape,
+        ratio: img.naturalHeight / img.naturalWidth,
+        maxClipWidth: landscape ? img.naturalHeight / img.naturalWidth : 1,
+        maxClipHeight: landscape ? 1 : img.naturalWidth / img.naturalHeight,
+      };
+      setImageInfo(info);
+      onChange({ left: 0, top: 0, width: info.maxClipWidth });
+      if (imageElementCallback != null) {
+        imageElementCallback(img);
+      }
+    },
+    [onChange, imageElementCallback],
+  );
+
+  const onPointerDown = React.useCallback(
+    (e: React.PointerEvent) => {
+      if (oldState != null) return;
+      e.currentTarget.setPointerCapture(e.pointerId);
+      setOldState({
+        x: e.clientX,
+        y: e.clientY,
+        clip: c,
+        pointerId: e.pointerId,
+      });
+    },
+    [oldState, c],
+  );
+
+  const onPointerUp = React.useCallback(
+    (e: React.PointerEvent) => {
+      if (oldState == null || oldState.pointerId !== e.pointerId) return;
+      e.currentTarget.releasePointerCapture(e.pointerId);
+      setOldState(null);
+    },
+    [oldState],
+  );
+
+  const onPointerMove = React.useCallback(
+    (e: React.PointerEvent) => {
+      if (oldState == null) return;
+
+      const oldClip = oldState.clip;
+
+      const movement = { x: e.clientX - oldState.x, y: e.clientY - oldState.y };
+
+      const { current: imgElement } = imgElementRef;
+
+      if (imgElement == null) throw new UiLogicError("Image element is null.");
+
+      const moveRatio = {
+        x: movement.x / imgElement.width,
+        y: movement.y / imgElement.height,
+      };
+
+      const newRatio = {
+        x: oldClip.left + moveRatio.x,
+        y: oldClip.top + moveRatio.y,
+      };
+      if (newRatio.x < 0) {
+        newRatio.x = 0;
+      } else if (newRatio.x > 1 - oldClip.width) {
+        newRatio.x = 1 - oldClip.width;
+      }
+      if (newRatio.y < 0) {
+        newRatio.y = 0;
+      } else if (newRatio.y > 1 - oldClip.height) {
+        newRatio.y = 1 - oldClip.height;
+      }
+
+      onChange({ left: newRatio.x, top: newRatio.y, width: oldClip.width });
+    },
+    [oldState, onChange],
+  );
+
+  const onHandlerPointerMove = React.useCallback(
+    (e: React.PointerEvent) => {
+      if (oldState == null) return;
+
+      const oldClip = oldState.clip;
+
+      const movement = { x: e.clientX - oldState.x, y: e.clientY - oldState.y };
+
+      const ratio = imageInfo == null ? 1 : imageInfo.ratio;
+
+      const { current: imgElement } = imgElementRef;
+
+      if (imgElement == null) throw new UiLogicError("Image element is null.");
+
+      const moveRatio = {
+        x: movement.x / imgElement.width,
+        y: movement.x / imgElement.width / ratio,
+      };
+
+      const newRatio = {
+        x: oldClip.width + moveRatio.x,
+        y: oldClip.height + moveRatio.y,
+      };
+
+      const maxRatio = {
+        x: Math.min(1 - oldClip.left, newRatio.x),
+        y: Math.min(1 - oldClip.top, newRatio.y),
+      };
+
+      const maxWidthRatio = Math.min(maxRatio.x, maxRatio.y * ratio);
+
+      let newWidth;
+      if (newRatio.x < 0) {
+        newWidth = 0;
+      } else if (newRatio.x > maxWidthRatio) {
+        newWidth = maxWidthRatio;
+      } else {
+        newWidth = newRatio.x;
+      }
+
+      onChange({ left: oldClip.left, top: oldClip.top, width: newWidth });
+    },
+    [imageInfo, oldState, onChange],
+  );
+
+  const toPercentage = (n: number): string => `${n}%`;
+
+  // fuck!!! I just can't find a better way to implement this in pure css
+  const containerStyle: React.CSSProperties = (() => {
+    if (imageInfo == null) {
+      return { width: "100%", paddingTop: "100%", height: 0 };
+    } else {
+      if (imageInfo.ratio > 1) {
+        return {
+          width: toPercentage(100 / imageInfo.ratio),
+          paddingTop: "100%",
+          height: 0,
+        };
+      } else {
+        return {
+          width: "100%",
+          paddingTop: toPercentage(100 * imageInfo.ratio),
+          height: 0,
+        };
+      }
+    }
+  })();
+
+  return (
+    <div
+      className={classnames("image-cropper-container", className)}
+      style={containerStyle}
+    >
+      <BlobImage
+        imgRef={onImageRef}
+        src={image}
+        onLoad={onImageLoad}
+        alt="to crop"
+      />
+      <div className="image-cropper-mask-container">
+        <div
+          className="image-cropper-mask"
+          style={{
+            left: toPercentage(c.left * 100),
+            top: toPercentage(c.top * 100),
+            width: toPercentage(c.width * 100),
+            height: toPercentage(c.height * 100),
+          }}
+          onPointerMove={onPointerMove}
+          onPointerDown={onPointerDown}
+          onPointerUp={onPointerUp}
+        />
+      </div>
+      <div
+        className="image-cropper-handler"
+        style={{
+          left: `calc(${(c.left + c.width) * 100}% - 15px)`,
+          top: `calc(${(c.top + c.height) * 100}% - 15px)`,
+        }}
+        onPointerMove={onHandlerPointerMove}
+        onPointerDown={onPointerDown}
+        onPointerUp={onPointerUp}
+      />
+    </div>
+  );
+};
+
+export default ImageCropper;
+
+export function applyClipToImage(
+  image: HTMLImageElement,
+  clip: Clip,
+  mimeType: string,
+): Promise<Blob> {
+  return new Promise((resolve, reject) => {
+    const naturalSize = {
+      width: image.naturalWidth,
+      height: image.naturalHeight,
+    };
+    const clipArea = {
+      x: naturalSize.width * clip.left,
+      y: naturalSize.height * clip.top,
+      length: naturalSize.width * clip.width,
+    };
+
+    const canvas = document.createElement("canvas");
+    canvas.width = clipArea.length;
+    canvas.height = clipArea.length;
+    const context = canvas.getContext("2d");
+
+    if (context == null) throw new Error("Failed to create context.");
+
+    context.drawImage(
+      image,
+      clipArea.x,
+      clipArea.y,
+      clipArea.length,
+      clipArea.length,
+      0,
+      0,
+      clipArea.length,
+      clipArea.length,
+    );
+
+    canvas.toBlob((blob) => {
+      if (blob == null) {
+        reject(new Error("canvas.toBlob returns null"));
+      } else {
+        resolve(blob);
+      }
+    }, mimeType);
+  });
+}
diff --git a/FrontEnd/src/components/LoadFailReload.tsx b/FrontEnd/src/components/LoadFailReload.tsx
new file mode 100644
index 00000000..81ba1f67
--- /dev/null
+++ b/FrontEnd/src/components/LoadFailReload.tsx
@@ -0,0 +1,37 @@
+import * as React from "react";
+import { Trans } from "react-i18next";
+
+export interface LoadFailReloadProps {
+  className?: string;
+  style?: React.CSSProperties;
+  onReload: () => void;
+}
+
+const LoadFailReload: React.FC<LoadFailReloadProps> = ({
+  onReload,
+  className,
+  style,
+}) => {
+  return (
+    <Trans
+      i18nKey="loadFailReload"
+      parent="div"
+      className={className}
+      style={style}
+    >
+      0
+      <a
+        href="#"
+        onClick={(e) => {
+          onReload();
+          e.preventDefault();
+        }}
+      >
+        1
+      </a>
+      2
+    </Trans>
+  );
+};
+
+export default LoadFailReload;
diff --git a/FrontEnd/src/components/LoadingPage.tsx b/FrontEnd/src/components/LoadingPage.tsx
new file mode 100644
index 00000000..35ee1aa8
--- /dev/null
+++ b/FrontEnd/src/components/LoadingPage.tsx
@@ -0,0 +1,13 @@
+import * as React from "react";
+
+import Spinner from "./Spinner";
+
+const LoadingPage: React.FC = () => {
+  return (
+    <div className="position-fixed w-100 h-100 d-flex justify-content-center align-items-center">
+      <Spinner />
+    </div>
+  );
+};
+
+export default LoadingPage;
diff --git a/FrontEnd/src/components/Page.tsx b/FrontEnd/src/components/Page.tsx
new file mode 100644
index 00000000..86fdb2f5
--- /dev/null
+++ b/FrontEnd/src/components/Page.tsx
@@ -0,0 +1,15 @@
+import { ComponentPropsWithoutRef, Ref } from "react";
+import classNames from "classnames";
+
+interface PageProps extends ComponentPropsWithoutRef<"div"> {
+  noTopPadding?: boolean;
+  pageRef?: Ref<HTMLDivElement>;
+}
+
+export default function Page({ noTopPadding, pageRef, className, children }: PageProps) {
+  return (
+    <div ref={pageRef} className={classNames(className, "cru-page", noTopPadding && "cru-page-no-top-padding")}>
+      {children}
+    </div>
+  );
+}
diff --git a/FrontEnd/src/components/SearchInput.css b/FrontEnd/src/components/SearchInput.css
new file mode 100644
index 00000000..f0503016
--- /dev/null
+++ b/FrontEnd/src/components/SearchInput.css
@@ -0,0 +1,8 @@
+.cru-search-input {
+  display: flex;
+  flex-wrap: wrap;
+}
+
+.cru-search-input-input {
+  width: 100%;
+}
diff --git a/FrontEnd/src/components/SearchInput.tsx b/FrontEnd/src/components/SearchInput.tsx
new file mode 100644
index 00000000..e3216b86
--- /dev/null
+++ b/FrontEnd/src/components/SearchInput.tsx
@@ -0,0 +1,50 @@
+import classNames from "classnames";
+
+import { useC, Text } from "./common";
+import LoadingButton from "./button/LoadingButton";
+
+import "./SearchInput.css";
+
+interface SearchInputProps {
+  value: string;
+  onChange: (value: string) => void;
+  onButtonClick: () => void;
+  loading?: boolean;
+  className?: string;
+  buttonText?: Text;
+}
+
+export default function SearchInput({
+  value,
+  onChange,
+  onButtonClick,
+  loading,
+  className,
+  buttonText,
+}: SearchInputProps) {
+  const c = useC();
+
+  return (
+    <div className={classNames("cru-search-input", className)}>
+      <input
+        type="text"
+        className="cru-search-input-input"
+        value={value}
+        onChange={(event) => {
+          const { value } = event.currentTarget;
+          onChange(value);
+        }}
+        onKeyDown={(event) => {
+          if (event.key === "Enter") {
+            onButtonClick();
+            event.preventDefault();
+          }
+        }}
+      />
+
+      <LoadingButton loading={loading} onClick={onButtonClick}>
+        {c(buttonText ?? "search")}
+      </LoadingButton>
+    </div>
+  );
+}
diff --git a/FrontEnd/src/components/Skeleton.css b/FrontEnd/src/components/Skeleton.css
new file mode 100644
index 00000000..a571eead
--- /dev/null
+++ b/FrontEnd/src/components/Skeleton.css
@@ -0,0 +1,14 @@
+.cru-skeleton {
+  padding: 0 1em;
+}
+
+.cru-skeleton-line {
+  height: 1em;
+  background-color: hsl(0, 0%, 90%);
+  margin: 0.7em 0;
+  border-radius: 0.2em;
+}
+
+.cru-skeleton-line.last {
+  width: 50%;
+}
diff --git a/FrontEnd/src/components/Skeleton.tsx b/FrontEnd/src/components/Skeleton.tsx
new file mode 100644
index 00000000..3b149db9
--- /dev/null
+++ b/FrontEnd/src/components/Skeleton.tsx
@@ -0,0 +1,32 @@
+import * as React from "react";
+import classnames from "classnames";
+import range from "lodash/range";
+
+import "./Skeleton.css";
+
+export interface SkeletonProps {
+  lineNumber?: number;
+  className?: string;
+  style?: React.CSSProperties;
+}
+
+const Skeleton: React.FC<SkeletonProps> = (props) => {
+  const { lineNumber: lineNumberProps, className, style } = props;
+  const lineNumber = lineNumberProps ?? 3;
+
+  return (
+    <div className={classnames(className, "cru-skeleton")} style={style}>
+      {range(lineNumber).map((i) => (
+        <div
+          key={i}
+          className={classnames(
+            "cru-skeleton-line",
+            i === lineNumber - 1 && "last"
+          )}
+        />
+      ))}
+    </div>
+  );
+};
+
+export default Skeleton;
diff --git a/FrontEnd/src/components/Spinner.css b/FrontEnd/src/components/Spinner.css
new file mode 100644
index 00000000..a1de68d2
--- /dev/null
+++ b/FrontEnd/src/components/Spinner.css
@@ -0,0 +1,13 @@
+@keyframes cru-spinner-animation {
+  from {
+    transform: scale(0,0);
+  }
+}
+
+.cru-spinner {
+  display: inline-block;
+  animation: cru-spinner-animation 0.5s infinite alternate;
+  background-color: currentColor;
+  border-radius: 50%;
+  transform-origin: center;
+}
diff --git a/FrontEnd/src/components/Spinner.tsx b/FrontEnd/src/components/Spinner.tsx
new file mode 100644
index 00000000..ec0c2c35
--- /dev/null
+++ b/FrontEnd/src/components/Spinner.tsx
@@ -0,0 +1,36 @@
+import { CSSProperties } from "react";
+import classnames from "classnames";
+
+import { ThemeColor } from "./common";
+
+import "./Spinner.css";
+
+export interface SpinnerProps {
+  size?: "sm" | "md" | "lg" | number | string;
+  color?: ThemeColor;
+  className?: string;
+  style?: CSSProperties;
+}
+
+export default function Spinner(props: SpinnerProps) {
+  const { size, color, className, style } = props;
+  const calculatedSize =
+    size === "sm"
+      ? "18px"
+      : size === "md"
+      ? "30px"
+      : size === "lg"
+      ? "42px"
+      : typeof size === "number"
+      ? size
+      : size == null
+      ? "20px"
+      : size;
+
+  return (
+    <span
+      className={classnames("cru-spinner", color && `cru-${color}`, className)}
+      style={{ width: calculatedSize, height: calculatedSize, ...style }}
+    />
+  );
+}
diff --git a/FrontEnd/src/components/TimelineLogo.tsx b/FrontEnd/src/components/TimelineLogo.tsx
new file mode 100644
index 00000000..e06ed0f5
--- /dev/null
+++ b/FrontEnd/src/components/TimelineLogo.tsx
@@ -0,0 +1,27 @@
+import { SVGAttributes } from "react";
+import * as React from "react";
+
+export interface TimelineLogoProps extends SVGAttributes<SVGElement> {
+  color?: string;
+}
+
+const TimelineLogo: React.FC<TimelineLogoProps> = (props) => {
+  const { color, ...forwardProps } = props;
+  const coercedColor = color ?? "currentcolor";
+  return (
+    <svg
+      className={props.className}
+      viewBox="0 0 100 100"
+      fill="none"
+      strokeWidth="12"
+      stroke={coercedColor}
+      {...forwardProps}
+    >
+      <line x1="50" y1="0" x2="50" y2="25" />
+      <circle cx="50" cy="50" r="22" />
+      <line x1="50" y1="75" x2="50" y2="100" />
+    </svg>
+  );
+};
+
+export default TimelineLogo;
diff --git a/FrontEnd/src/components/alert/AlertHost.tsx b/FrontEnd/src/components/alert/AlertHost.tsx
new file mode 100644
index 00000000..b234ac03
--- /dev/null
+++ b/FrontEnd/src/components/alert/AlertHost.tsx
@@ -0,0 +1,113 @@
+import * as React from "react";
+import without from "lodash/without";
+import { useTranslation } from "react-i18next";
+import classNames from "classnames";
+
+import { alertService, AlertInfoEx, AlertInfo } from "~src/services/alert";
+import { convertI18nText } from "~src/common";
+
+import IconButton from "../button/IconButton";
+
+import "./alert.css";
+
+interface AutoCloseAlertProps {
+  alert: AlertInfo;
+  close: () => void;
+}
+
+export const AutoCloseAlert: React.FC<AutoCloseAlertProps> = (props) => {
+  const { alert, close } = props;
+  const { dismissTime } = alert;
+
+  const { t } = useTranslation();
+
+  const timerTag = React.useRef<number | null>(null);
+  const closeHandler = React.useRef<(() => void) | null>(null);
+
+  React.useEffect(() => {
+    closeHandler.current = close;
+  }, [close]);
+
+  React.useEffect(() => {
+    const tag =
+      dismissTime === "never"
+        ? null
+        : typeof dismissTime === "number"
+        ? window.setTimeout(() => closeHandler.current?.(), dismissTime)
+        : window.setTimeout(() => closeHandler.current?.(), 5000);
+    timerTag.current = tag;
+    return () => {
+      if (tag != null) {
+        window.clearTimeout(tag);
+      }
+    };
+  }, [dismissTime]);
+
+  const cancelTimer = (): void => {
+    const { current: tag } = timerTag;
+    if (tag != null) {
+      window.clearTimeout(tag);
+    }
+  };
+
+  return (
+    <div
+      className={classNames(
+        "m-3 cru-alert",
+        "cru-" + (alert.type ?? "primary")
+      )}
+      onClick={cancelTimer}
+    >
+      <div className="cru-alert-content">
+        {(() => {
+          const { message, customMessage } = alert;
+          if (customMessage != null) {
+            return customMessage;
+          } else {
+            return convertI18nText(message, t);
+          }
+        })()}
+      </div>
+      <div className="cru-alert-close-button-container">
+        <IconButton
+          icon="x"
+          className="cru-alert-close-button"
+          onClick={close}
+        />
+      </div>
+    </div>
+  );
+};
+
+const AlertHost: React.FC = () => {
+  const [alerts, setAlerts] = React.useState<AlertInfoEx[]>([]);
+
+  React.useEffect(() => {
+    const consume = (alert: AlertInfoEx): void => {
+      setAlerts((old) => [...old, alert]);
+    };
+
+    alertService.registerConsumer(consume);
+    return () => {
+      alertService.unregisterConsumer(consume);
+    };
+  }, []);
+
+  return (
+    <div className="alert-container">
+      {alerts.map((alert) => {
+        return (
+          <AutoCloseAlert
+            key={alert.id}
+            alert={alert}
+            close={() => {
+              setAlerts((old) => without(old, alert));
+            }}
+          />
+        );
+      })}
+    </div>
+  );
+};
+
+export default AlertHost;
diff --git a/FrontEnd/src/components/alert/alert.css b/FrontEnd/src/components/alert/alert.css
new file mode 100644
index 00000000..54c2b87f
--- /dev/null
+++ b/FrontEnd/src/components/alert/alert.css
@@ -0,0 +1,33 @@
+.alert-container {
+  position: fixed;
+  z-index: 1040;
+}
+
+.cru-alert {
+  border-radius: 5px;
+  border: var(--cru-key-color) 1px solid;
+  color: var(--cru-key-t-color);
+  background-color: var(--cru-key-b1-color);
+
+  display: flex;
+  overflow: hidden;
+}
+
+.cru-alert-content {
+  padding: 0.5em 2em;
+}
+
+.cru-alert-close-button-container {
+  flex-shrink: 0;
+  margin-left: auto;
+  width: 2em;
+  text-align: center;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background-color: var(--cru-key-t-color);
+}
+
+.cru-alert-close-button {
+  color: var(--cru-key-color);
+}
diff --git a/FrontEnd/src/components/breakpoints.ts b/FrontEnd/src/components/breakpoints.ts
new file mode 100644
index 00000000..fb281610
--- /dev/null
+++ b/FrontEnd/src/components/breakpoints.ts
@@ -0,0 +1,3 @@
+export const breakpoints = {
+  sm: 576,
+} as const;
diff --git a/FrontEnd/src/components/button/Button.css b/FrontEnd/src/components/button/Button.css
new file mode 100644
index 00000000..1da70f0e
--- /dev/null
+++ b/FrontEnd/src/components/button/Button.css
@@ -0,0 +1,64 @@
+.cru-button {
+  font-size: 1rem;
+  padding: 0.4em 0.8em;
+  transition: all 0.3s;
+  border-radius: 0.2em;
+  border: 1px solid;
+  cursor: pointer;
+}
+
+.cru-button:not(.outline) {
+  color: var(--cru-push-button-text-color);
+  background-color: var(--cru-clickable-normal-color);
+  border-color: var(--cru-clickable-normal-color);
+}
+
+.cru-button:not(.outline):hover {
+  background-color: var(--cru-clickable-hover-color);
+  border-color: var(--cru-clickable-hover-color);
+}
+
+.cru-button:not(.outline):focus {
+  background-color: var(--cru-clickable-focus-color);
+  border-color: var(--cru-clickable-focus-color);
+}
+
+.cru-button:not(.outline):active {
+  background-color: var(--cru-clickable-active-color);
+  border-color: var(--cru-clickable-active-color);
+}
+
+.cru-button:not(.outline):disabled {
+  color: var(--cru-push-button-disabled-text-color);
+  background-color: var(--cru-push-button-disabled-color);
+  border-color: var(--cru-push-button-disabled-color);
+  cursor: auto;
+}
+
+
+.cru-button.outline {
+  color: var(--cru-clickable-normal-color);
+  border-color: var(--cru-clickable-normal-color);
+  background-color: transparent;
+}
+
+.cru-button.outline:hover {
+  color: var(--cru-clickable-hover-color);
+  border-color: var(--cru-clickable-hover-color);
+}
+
+.cru-button.outline:focus {
+  color: var(--cru-clickable-focus-color);
+  border-color: var(--cru-clickable-focus-color);
+}
+
+.cru-button.outline:active {
+  color: var(--cru-clickable-active-color);
+  border-color: var(--cru-clickable-active-color);
+}
+
+.cru-button.outline:disabled {
+  color: var(--cru-clickable-disabled-color);
+  border-color: var(--cru-clickable-disabled-color);
+  cursor: auto;
+}
diff --git a/FrontEnd/src/components/button/Button.tsx b/FrontEnd/src/components/button/Button.tsx
new file mode 100644
index 00000000..6c38e130
--- /dev/null
+++ b/FrontEnd/src/components/button/Button.tsx
@@ -0,0 +1,46 @@
+import { ComponentPropsWithoutRef, Ref } from "react";
+import classNames from "classnames";
+
+import { Text, useC, ThemeColor } from "../common";
+
+import "./Button.css";
+
+interface ButtonProps extends ComponentPropsWithoutRef<"button"> {
+  color?: ThemeColor;
+  text?: Text;
+  outline?: boolean;
+  buttonRef?: Ref<HTMLButtonElement> | null;
+}
+
+export default function Button(props: ButtonProps) {
+  const {
+    buttonRef,
+    color,
+    text,
+    outline,
+    className,
+    children,
+    ...otherProps
+  } = props;
+
+  if (text != null && children != null) {
+    console.warn("You can't set both text and children props.");
+  }
+
+  const c = useC();
+
+  return (
+    <button
+      ref={buttonRef}
+      className={classNames(
+        "cru-button",
+        `cru-clickable-${color ?? "primary"}`,
+        outline && "outline",
+        className,
+      )}
+      {...otherProps}
+    >
+      {text != null ? c(text) : children}
+    </button>
+  );
+}
diff --git a/FrontEnd/src/components/button/ButtonRow.css b/FrontEnd/src/components/button/ButtonRow.css
new file mode 100644
index 00000000..e69de29b
diff --git a/FrontEnd/src/components/button/ButtonRow.tsx b/FrontEnd/src/components/button/ButtonRow.tsx
new file mode 100644
index 00000000..eea60cc4
--- /dev/null
+++ b/FrontEnd/src/components/button/ButtonRow.tsx
@@ -0,0 +1,62 @@
+import { ComponentPropsWithoutRef, Ref } from "react";
+import classNames from "classnames";
+
+import Button from "./Button";
+import FlatButton from "./FlatButton";
+import IconButton from "./IconButton";
+import LoadingButton from "./LoadingButton";
+
+import "./ButtonRow.css";
+
+type ButtonRowButton = (
+  | {
+      type: "normal";
+      props: ComponentPropsWithoutRef<typeof Button>;
+    }
+  | {
+      type: "flat";
+      props: ComponentPropsWithoutRef<typeof FlatButton>;
+    }
+  | {
+      type: "icon";
+      props: ComponentPropsWithoutRef<typeof IconButton>;
+    }
+  | { type: "loading"; props: ComponentPropsWithoutRef<typeof LoadingButton> }
+) & { key: string | number };
+
+interface ButtonRowProps {
+  className?: string;
+  containerRef?: Ref<HTMLDivElement>;
+  buttons: ButtonRowButton[];
+  buttonsClassName?: string;
+}
+
+export default function ButtonRow({
+  className,
+  containerRef,
+  buttons,
+  buttonsClassName,
+}: ButtonRowProps) {
+  return (
+    <div ref={containerRef} className={classNames("cru-button-row", className)}>
+      {buttons.map((button) => {
+        const { type, key, props } = button;
+        const newClassName = classNames(props.className, buttonsClassName);
+        switch (type) {
+          case "normal":
+            return <Button key={key} {...props} className={newClassName} />;
+          case "flat":
+            return <FlatButton key={key} {...props} className={newClassName} />;
+          case "icon":
+            return <IconButton key={key} {...props} className={newClassName} />;
+          case "loading":
+            return (
+              <LoadingButton key={key} {...props} className={newClassName} />
+            );
+          default:
+            throw new Error();
+        }
+      })}
+    </div>
+  );
+}
diff --git a/FrontEnd/src/components/button/ButtonRowV2.tsx b/FrontEnd/src/components/button/ButtonRowV2.tsx
new file mode 100644
index 00000000..3467ad52
--- /dev/null
+++ b/FrontEnd/src/components/button/ButtonRowV2.tsx
@@ -0,0 +1,143 @@
+import { ComponentPropsWithoutRef, Ref } from "react";
+import classNames from "classnames";
+
+import Button from "./Button";
+import FlatButton from "./FlatButton";
+import IconButton from "./IconButton";
+import LoadingButton from "./LoadingButton";
+
+import "./ButtonRow.css";
+import { Text, ThemeColor } from "../common";
+
+interface ButtonRowV2ButtonBase {
+  key: string | number;
+  action?: "primary" | "secondary";
+  color?: ThemeColor;
+  disabled?: boolean;
+  onClick?: () => void;
+}
+
+interface ButtonRowV2ButtonWithNoType extends ButtonRowV2ButtonBase {
+  type?: undefined | null;
+  text: Text;
+  outline?: boolean;
+  props?: ComponentPropsWithoutRef<typeof Button>;
+}
+
+interface ButtonRowV2NormalButton extends ButtonRowV2ButtonBase {
+  type: "normal";
+  text: Text;
+  outline?: boolean;
+  props?: ComponentPropsWithoutRef<typeof Button>;
+}
+
+interface ButtonRowV2FlatButton extends ButtonRowV2ButtonBase {
+  type: "flat";
+  text: Text;
+  props?: ComponentPropsWithoutRef<typeof FlatButton>;
+}
+
+interface ButtonRowV2IconButton extends ButtonRowV2ButtonBase {
+  type: "icon";
+  icon: string;
+  props?: ComponentPropsWithoutRef<typeof IconButton>;
+}
+
+interface ButtonRowV2LoadingButton extends ButtonRowV2ButtonBase {
+  type: "loading";
+  text: Text;
+  loading?: boolean;
+  props?: ComponentPropsWithoutRef<typeof LoadingButton>;
+}
+
+type ButtonRowV2Button =
+  | ButtonRowV2ButtonWithNoType
+  | ButtonRowV2NormalButton
+  | ButtonRowV2FlatButton
+  | ButtonRowV2IconButton
+  | ButtonRowV2LoadingButton;
+
+interface ButtonRowV2Props {
+  className?: string;
+  containerRef?: Ref<HTMLDivElement>;
+  buttons: ButtonRowV2Button[];
+  buttonsClassName?: string;
+}
+
+export default function ButtonRowV2({
+  className,
+  containerRef,
+  buttons,
+  buttonsClassName,
+}: ButtonRowV2Props) {
+  return (
+    <div ref={containerRef} className={classNames("cru-button-row", className)}>
+      {buttons.map((button) => {
+        const { key, action, color, disabled, onClick } = button;
+
+        const realAction = action ?? "primary";
+        const realColor =
+          color ?? (realAction === "primary" ? "primary" : "secondary");
+
+        const commonProps = { key, color: realColor, disabled, onClick };
+        const newClassName = classNames(
+          button.props?.className,
+          buttonsClassName,
+        );
+
+        switch (button.type) {
+          case null:
+          case undefined:
+          case "normal": {
+            const { text, outline, props } = button;
+            return (
+              <Button
+                {...commonProps}
+                text={text}
+                outline={outline ?? realAction !== "primary"}
+                {...props}
+                className={newClassName}
+              />
+            );
+          }
+          case "flat": {
+            const { text, props } = button;
+            return (
+              <FlatButton
+                {...commonProps}
+                text={text}
+                {...props}
+                className={newClassName}
+              />
+            );
+          }
+          case "icon": {
+            const { icon, props } = button;
+            return (
+              <IconButton
+                {...commonProps}
+                icon={icon}
+                {...props}
+                className={newClassName}
+              />
+            );
+          }
+          case "loading": {
+            const { text, loading, props } = button;
+            return (
+              <LoadingButton
+                {...commonProps}
+                text={text}
+                loading={loading}
+                {...props}
+                className={newClassName}
+              />
+            );
+          }
+          default:
+            throw new Error();
+        }
+      })}
+    </div>
+  );
+}
diff --git a/FrontEnd/src/components/button/FlatButton.css b/FrontEnd/src/components/button/FlatButton.css
new file mode 100644
index 00000000..2050946c
--- /dev/null
+++ b/FrontEnd/src/components/button/FlatButton.css
@@ -0,0 +1,27 @@
+.cru-flat-button {
+  font-size: 1rem;
+  padding: 0.4em 0.8em;
+  transition: all 0.5s;
+  border-radius: 0.2em;
+  background-color: var(--cru-clickable-grayscale-normal-color);
+  border: 1px none;
+  color: var(--cru-clickable-normal-color);
+  cursor: pointer;
+}
+
+.cru-flat-button:hover {
+  background-color: var(--cru-clickable-grayscale-hover-color);
+}
+
+.cru-flat-button:focus {
+  background-color: var(--cru-clickable-grayscale-focus-color);
+}
+
+.cru-flat-button:active {
+  background-color: var(--cru-clickable-grayscale-active-color);
+}
+
+.cru-flat-button:disabled {
+  color: var(--cru-clickable-disabled-color);
+  cursor: auto;
+}
\ No newline at end of file
diff --git a/FrontEnd/src/components/button/FlatButton.tsx b/FrontEnd/src/components/button/FlatButton.tsx
new file mode 100644
index 00000000..9f074dd6
--- /dev/null
+++ b/FrontEnd/src/components/button/FlatButton.tsx
@@ -0,0 +1,36 @@
+import { ComponentPropsWithoutRef, Ref } from "react";
+import classNames from "classnames";
+
+import { Text, useC, ThemeColor } from "../common";
+
+import "./FlatButton.css";
+
+interface FlatButtonProps extends ComponentPropsWithoutRef<"button"> {
+  color?: ThemeColor;
+  text?: Text;
+  buttonRef?: Ref<HTMLButtonElement> | null;
+}
+
+export default function FlatButton(props: FlatButtonProps) {
+  const { color, text, className, children, buttonRef, ...otherProps } = props;
+
+  if (text != null && children != null) {
+    console.warn("You can't set both text and children props.");
+  }
+
+  const c = useC();
+
+  return (
+    <button
+      ref={buttonRef}
+      className={classNames(
+        "cru-flat-button",
+        `cru-clickable-${color ?? "primary"}`,
+        className,
+      )}
+      {...otherProps}
+    >
+      {text != null ? c(text) : children}
+    </button>
+  );
+}
diff --git a/FrontEnd/src/components/button/IconButton.css b/FrontEnd/src/components/button/IconButton.css
new file mode 100644
index 00000000..a3747201
--- /dev/null
+++ b/FrontEnd/src/components/button/IconButton.css
@@ -0,0 +1,30 @@
+.cru-icon-button {
+  color: var(--cru-clickable-normal-color);
+  font-size: 1.4rem;
+  background: none;
+  border: none;
+  transition: all 0.5s;
+  cursor: pointer;
+  user-select: none;
+}
+
+.cru-icon-button:hover {
+  color: var(--cru-clickable-hover-color);
+}
+
+.cru-icon-button:focus {
+  color: var(--cru-clickable-focus-color);
+}
+
+.cru-icon-button:active {
+  color: var(--cru-clickable-active-color);
+}
+
+.cru-flat-button:disabled {
+  color: var(--cru-clickable-disabled-color);
+  cursor: auto;
+}
+
+.cru-icon-button.large {
+  font-size: 1.6rem;
+}
diff --git a/FrontEnd/src/components/button/IconButton.tsx b/FrontEnd/src/components/button/IconButton.tsx
new file mode 100644
index 00000000..95c58887
--- /dev/null
+++ b/FrontEnd/src/components/button/IconButton.tsx
@@ -0,0 +1,30 @@
+import { ComponentPropsWithoutRef } from "react";
+import classNames from "classnames";
+
+import { ThemeColor } from "../common";
+
+import "./IconButton.css";
+
+interface IconButtonProps extends ComponentPropsWithoutRef<"i"> {
+  icon: string;
+  color?: ThemeColor | "grayscale";
+  large?: boolean;
+  disabled?: boolean; // TODO: Not implemented
+}
+
+export default function IconButton(props: IconButtonProps) {
+  const { icon, color, className, large, ...otherProps } = props;
+
+  return (
+    <button
+      className={classNames(
+        "cru-icon-button",
+        `cru-clickable-${color ?? "grayscale"}`,
+        large && "large",
+        "bi-" + icon,
+        className,
+      )}
+      {...otherProps}
+    />
+  );
+}
diff --git a/FrontEnd/src/components/button/LoadingButton.css b/FrontEnd/src/components/button/LoadingButton.css
new file mode 100644
index 00000000..23fadd3d
--- /dev/null
+++ b/FrontEnd/src/components/button/LoadingButton.css
@@ -0,0 +1,13 @@
+.cru-loading-button {
+  display: flex;
+  align-items: center;
+}
+
+.cru-loading-button-spinner {
+  margin-left: 0.5em;
+}
+
+.cru-loading-button-loading {
+  color: var(--cru-clickable-normal-color) !important;
+  border-color: var(--cru-clickable-normal-color) !important;
+}
\ No newline at end of file
diff --git a/FrontEnd/src/components/button/LoadingButton.tsx b/FrontEnd/src/components/button/LoadingButton.tsx
new file mode 100644
index 00000000..7e7d08e6
--- /dev/null
+++ b/FrontEnd/src/components/button/LoadingButton.tsx
@@ -0,0 +1,40 @@
+import classNames from "classnames";
+
+import { I18nText, ThemeColor, useC } from "../common";
+
+import Spinner from "../Spinner";
+
+import "./LoadingButton.css";
+
+interface LoadingButtonProps extends React.ComponentPropsWithoutRef<"button"> {
+  color?: ThemeColor;
+  text?: I18nText;
+  loading?: boolean;
+}
+
+export default function LoadingButton(props: LoadingButtonProps) {
+  const c = useC();
+
+  const { color, text, loading, disabled, className, children, ...otherProps } =
+    props;
+
+  if (text != null && children != null) {
+    console.warn("You can't set both text and children props.");
+  }
+
+  return (
+    <button
+      disabled={disabled || loading}
+      className={classNames(
+        "cru-button outline cru-loading-button",
+        `cru-clickable-${color ?? "primary"}`,
+        loading && "cru-loading-button-loading",
+        className,
+      )}
+      {...otherProps}
+    >
+      {text != null ? c(text) : children}
+      {loading && <Spinner className="cru-loading-button-spinner" />}
+    </button>
+  );
+}
diff --git a/FrontEnd/src/components/button/index.tsx b/FrontEnd/src/components/button/index.tsx
new file mode 100644
index 00000000..b5aa5470
--- /dev/null
+++ b/FrontEnd/src/components/button/index.tsx
@@ -0,0 +1,15 @@
+import Button from "./Button";
+import FlatButton from "./FlatButton";
+import IconButton from "./IconButton";
+import LoadingButton from "./LoadingButton";
+import ButtonRow from "./ButtonRow";
+import ButtonRowV2 from "./ButtonRowV2";
+
+export {
+  Button,
+  FlatButton,
+  IconButton,
+  LoadingButton,
+  ButtonRow,
+  ButtonRowV2,
+};
diff --git a/FrontEnd/src/components/common.ts b/FrontEnd/src/components/common.ts
new file mode 100644
index 00000000..e6f7319f
--- /dev/null
+++ b/FrontEnd/src/components/common.ts
@@ -0,0 +1,14 @@
+export type { Text, I18nText } from "~src/common";
+export { UiLogicError, c, convertI18nText, useC } from "~src/common";
+
+export const themeColors = [
+  "primary",
+  "secondary",
+  "danger",
+  "create",
+] as const;
+
+export type ThemeColor = (typeof themeColors)[number];
+
+export { breakpoints } from "./breakpoints";
+export { useMobile } from "./hooks";
diff --git a/FrontEnd/src/components/dialog/ConfirmDialog.css b/FrontEnd/src/components/dialog/ConfirmDialog.css
new file mode 100644
index 00000000..e69de29b
diff --git a/FrontEnd/src/components/dialog/ConfirmDialog.tsx b/FrontEnd/src/components/dialog/ConfirmDialog.tsx
new file mode 100644
index 00000000..26939c9b
--- /dev/null
+++ b/FrontEnd/src/components/dialog/ConfirmDialog.tsx
@@ -0,0 +1,59 @@
+import { useC, Text, ThemeColor } from "../common";
+
+import Dialog from "./Dialog";
+import DialogContainer from "./DialogContainer";
+
+export default function ConfirmDialog({
+  open,
+  onClose,
+  onConfirm,
+  title,
+  body,
+  color,
+  bodyColor,
+}: {
+  open: boolean;
+  onClose: () => void;
+  onConfirm: () => void;
+  title: Text;
+  body: Text;
+  color?: ThemeColor;
+  bodyColor?: ThemeColor;
+}) {
+  const c = useC();
+
+  return (
+    <Dialog onClose={onClose} open={open}>
+      <DialogContainer
+        title={title}
+        titleColor={color ?? "danger"}
+        buttons={[
+          {
+            key: "cancel",
+            type: "normal",
+            props: {
+              text: "operationDialog.cancel",
+              color: "secondary",
+              outline: true,
+              onClick: onClose,
+            },
+          },
+          {
+            key: "confirm",
+            type: "normal",
+            props: {
+              text: "operationDialog.confirm",
+              color: "danger",
+              onClick: () => {
+                onConfirm();
+                onClose();
+              },
+            },
+          },
+        ]}
+      >
+        <div className={`cru-${bodyColor ?? "primary"}`}>{c(body)}</div>
+      </DialogContainer>
+    </Dialog>
+  );
+}
diff --git a/FrontEnd/src/components/dialog/Dialog.css b/FrontEnd/src/components/dialog/Dialog.css
new file mode 100644
index 00000000..e4c61440
--- /dev/null
+++ b/FrontEnd/src/components/dialog/Dialog.css
@@ -0,0 +1,60 @@
+.cru-dialog-overlay {
+  position: fixed;
+  z-index: 1040;
+  left: 0;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  display: flex;
+  align-items: center;
+  overflow: auto;
+}
+
+.cru-dialog-background {
+  position: absolute;
+  z-index: -1;
+  left: 0;
+  right: 0;
+  top: 0;
+  bottom: 0;
+  background-color: var(--cru-surface-dim-color);
+  opacity: 0.8;
+}
+
+.cru-dialog-container {
+  max-width: 100%;
+  min-width: 30vw;
+
+  margin: 2em auto;
+
+  border: var(--cru-key-container-color) 1px solid;
+  border-radius: 5px;
+  padding: 1.5em;
+  background-color: var(--cru-surface-color);
+}
+
+@media (min-width: 576px) {
+  .cru-dialog-container {
+    max-width: 800px;
+  }
+}
+
+.cru-dialog-enter .cru-dialog-container {
+  transform: scale(0, 0);
+  opacity: 0;
+  transform-origin: center;
+}
+
+.cru-dialog-enter-active .cru-dialog-container {
+  transform: scale(1, 1);
+  opacity: 1;
+  transition: transform 0.3s, opacity 0.3s;
+  transform-origin: center;
+}
+
+.cru-dialog-exit-active .cru-dialog-container {
+  transition: transform 0.3s, opacity 0.3s;
+  transform: scale(0, 0);
+  opacity: 0;
+  transform-origin: center;
+}
\ No newline at end of file
diff --git a/FrontEnd/src/components/dialog/Dialog.tsx b/FrontEnd/src/components/dialog/Dialog.tsx
new file mode 100644
index 00000000..2ff7bea8
--- /dev/null
+++ b/FrontEnd/src/components/dialog/Dialog.tsx
@@ -0,0 +1,63 @@
+import { ReactNode, useRef } from "react";
+import ReactDOM from "react-dom";
+import { CSSTransition } from "react-transition-group";
+import classNames from "classnames";
+
+import { ThemeColor } from "../common";
+
+import "./Dialog.css";
+
+const optionalPortalElement = document.getElementById("portal");
+if (optionalPortalElement == null) {
+  throw new Error("Portal element not found");
+}
+const portalElement = optionalPortalElement;
+
+interface DialogProps {
+  open: boolean;
+  onClose: () => void;
+  color?: ThemeColor;
+  children?: ReactNode;
+  disableCloseOnClickOnOverlay?: boolean;
+}
+
+export default function Dialog({
+  open,
+  onClose,
+  color,
+  children,
+  disableCloseOnClickOnOverlay,
+}: DialogProps) {
+  color = color ?? "primary";
+
+  const nodeRef = useRef(null);
+
+  return ReactDOM.createPortal(
+    <CSSTransition
+      nodeRef={nodeRef}
+      mountOnEnter
+      unmountOnExit
+      in={open}
+      timeout={300}
+      classNames="cru-dialog"
+    >
+      <div
+        ref={nodeRef}
+        className={classNames("cru-dialog-overlay", `cru-${color}`)}
+      >
+        <div
+          className="cru-dialog-background"
+          onClick={
+            disableCloseOnClickOnOverlay
+              ? undefined
+              : () => {
+                  onClose();
+                }
+          }
+        />
+        <div className="cru-dialog-container">{children}</div>
+      </div>
+    </CSSTransition>,
+    portalElement,
+  );
+}
diff --git a/FrontEnd/src/components/dialog/DialogContainer.css b/FrontEnd/src/components/dialog/DialogContainer.css
new file mode 100644
index 00000000..fbb18e0d
--- /dev/null
+++ b/FrontEnd/src/components/dialog/DialogContainer.css
@@ -0,0 +1,20 @@
+.cru-dialog-container-title {
+  font-size: 1.2em;
+  font-weight: bold;
+  color: var(--cru-key-color);
+  margin-bottom: 0.5em;
+}
+
+
+.cru-dialog-container-hr {
+  margin: 1em 0;
+}
+
+.cru-dialog-container-button-row {
+  display: flex;
+  justify-content: flex-end;
+}
+
+.cru-dialog-container-button {
+  margin-left: 1em;
+}
\ No newline at end of file
diff --git a/FrontEnd/src/components/dialog/DialogContainer.tsx b/FrontEnd/src/components/dialog/DialogContainer.tsx
new file mode 100644
index 00000000..afee2669
--- /dev/null
+++ b/FrontEnd/src/components/dialog/DialogContainer.tsx
@@ -0,0 +1,95 @@
+import { ComponentProps, Ref, ReactNode } from "react";
+import classNames from "classnames";
+
+import { ThemeColor, Text, useC } from "../common";
+import { ButtonRow, ButtonRowV2 } from "../button";
+
+import "./DialogContainer.css";
+
+interface DialogContainerBaseProps {
+  className?: string;
+  title: Text;
+  titleColor?: ThemeColor;
+  titleClassName?: string;
+  titleRef?: Ref<HTMLDivElement>;
+  bodyContainerClassName?: string;
+  bodyContainerRef?: Ref<HTMLDivElement>;
+  buttonsClassName?: string;
+  buttonsContainerRef?: ComponentProps<typeof ButtonRow>["containerRef"];
+  children: ReactNode;
+}
+
+interface DialogContainerWithButtonsProps extends DialogContainerBaseProps {
+  buttons: ComponentProps<typeof ButtonRow>["buttons"];
+}
+
+interface DialogContainerWithButtonsV2Props extends DialogContainerBaseProps {
+  buttonsV2: ComponentProps<typeof ButtonRowV2>["buttons"];
+}
+
+type DialogContainerProps =
+  | DialogContainerWithButtonsProps
+  | DialogContainerWithButtonsV2Props;
+
+export default function DialogContainer(props: DialogContainerProps) {
+  const {
+    className,
+    title,
+    titleColor,
+    titleClassName,
+    titleRef,
+    bodyContainerClassName,
+    bodyContainerRef,
+    buttonsClassName,
+    buttonsContainerRef,
+    children,
+  } = props;
+
+  const c = useC();
+
+  return (
+    <div className={classNames(className)}>
+      <div
+        ref={titleRef}
+        className={classNames(
+          `cru-dialog-container-title cru-${titleColor ?? "primary"}`,
+          titleClassName,
+        )}
+      >
+        {c(title)}
+      </div>
+      <hr className="cru-dialog-container-hr" />
+      <div
+        ref={bodyContainerRef}
+        className={classNames(
+          "cru-dialog-container-body",
+          bodyContainerClassName,
+        )}
+      >
+        {children}
+      </div>
+      <hr className="cru-dialog-container-hr" />
+      {"buttons" in props ? (
+        <ButtonRow
+          containerRef={buttonsContainerRef}
+          className={classNames(
+            "cru-dialog-container-button-row",
+            buttonsClassName,
+          )}
+          buttons={props.buttons}
+          buttonsClassName="cru-dialog-container-button"
+        />
+      ) : (
+        <ButtonRowV2
+          containerRef={buttonsContainerRef}
+          className={classNames(
+            "cru-dialog-container-button-row",
+            buttonsClassName,
+          )}
+          buttons={props.buttonsV2}
+          buttonsClassName="cru-dialog-container-button"
+        />
+      )}
+    </div>
+  );
+}
diff --git a/FrontEnd/src/components/dialog/FullPageDialog.css b/FrontEnd/src/components/dialog/FullPageDialog.css
new file mode 100644
index 00000000..2f1fc636
--- /dev/null
+++ b/FrontEnd/src/components/dialog/FullPageDialog.css
@@ -0,0 +1,44 @@
+.cru-full-page {
+  position: fixed;
+  z-index: 1030;
+  left: 0;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  background-color: white;
+  padding-top: 56px;
+}
+
+.cru-full-page-top-bar {
+  height: 56px;
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  z-index: 1;
+  background-color: var(--cru-primary-color);
+  display: flex;
+  align-items: center;
+}
+
+.cru-full-page-content-container {
+  overflow: scroll;
+}
+
+.cru-full-page-back-button {
+  color: var(--cru-primary-t-color);
+}
+
+.cru-full-page-enter {
+  transform: translate(100%, 0);
+}
+
+.cru-full-page-enter-active {
+  transform: none;
+  transition: transform 0.3s;
+}
+
+.cru-full-page-exit-active {
+  transition: transform 0.3s;
+  transform: translate(100%, 0);
+}
diff --git a/FrontEnd/src/components/dialog/FullPageDialog.tsx b/FrontEnd/src/components/dialog/FullPageDialog.tsx
new file mode 100644
index 00000000..6368fc0a
--- /dev/null
+++ b/FrontEnd/src/components/dialog/FullPageDialog.tsx
@@ -0,0 +1,53 @@
+import * as React from "react";
+import { createPortal } from "react-dom";
+import classnames from "classnames";
+import { CSSTransition } from "react-transition-group";
+
+import "./FullPageDialog.css";
+import IconButton from "../button/IconButton";
+
+export interface FullPageDialogProps {
+  show: boolean;
+  onBack: () => void;
+  contentContainerClassName?: string;
+  children: React.ReactNode;
+}
+
+const FullPageDialog: React.FC<FullPageDialogProps> = ({
+  show,
+  onBack,
+  children,
+  contentContainerClassName,
+}) => {
+  return createPortal(
+    <CSSTransition
+      mountOnEnter
+      unmountOnExit
+      in={show}
+      timeout={300}
+      classNames="cru-full-page"
+    >
+      <div className="cru-full-page">
+        <div className="cru-full-page-top-bar">
+          <IconButton
+            icon="arrow-left"
+            className="ms-3 cru-full-page-back-button"
+            onClick={onBack}
+          />
+        </div>
+        <div
+          className={classnames(
+            "cru-full-page-content-container",
+            contentContainerClassName
+          )}
+        >
+          {children}
+        </div>
+      </div>
+    </CSSTransition>,
+    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+    document.getElementById("portal")!
+  );
+};
+
+export default FullPageDialog;
diff --git a/FrontEnd/src/components/dialog/OperationDialog.css b/FrontEnd/src/components/dialog/OperationDialog.css
new file mode 100644
index 00000000..f4b7237e
--- /dev/null
+++ b/FrontEnd/src/components/dialog/OperationDialog.css
@@ -0,0 +1,8 @@
+.cru-operation-dialog-prompt {
+  color: var(--cru-surface-on-color);
+}
+
+.cru-operation-dialog-input-group {
+  display: block;
+  margin: 0.5em 0;
+}
diff --git a/FrontEnd/src/components/dialog/OperationDialog.tsx b/FrontEnd/src/components/dialog/OperationDialog.tsx
new file mode 100644
index 00000000..e5db7f4f
--- /dev/null
+++ b/FrontEnd/src/components/dialog/OperationDialog.tsx
@@ -0,0 +1,230 @@
+import { useState, ReactNode, ComponentProps } from "react";
+import classNames from "classnames";
+
+import { useC, Text, ThemeColor } from "../common";
+
+import {
+  useInputs,
+  InputGroup,
+  Initializer as InputInitializer,
+  InputValueDict,
+  InputErrorDict,
+  InputConfirmValueDict,
+} from "../input";
+import Dialog from "./Dialog";
+import DialogContainer from "./DialogContainer";
+import { ButtonRow } from "../button";
+
+import "./OperationDialog.css";
+
+export type { InputInitializer, InputValueDict, InputErrorDict };
+
+interface OperationDialogPromptProps {
+  message?: Text;
+  customMessage?: Text;
+  customMessageNode?: ReactNode;
+  className?: string;
+}
+
+function OperationDialogPrompt(props: OperationDialogPromptProps) {
+  const { message, customMessage, customMessageNode, className } = props;
+
+  const c = useC();
+
+  return (
+    <div className={classNames(className, "cru-operation-dialog-prompt")}>
+      {message && <p>{c(message)}</p>}
+      {customMessageNode ?? (customMessage != null ? c(customMessage) : null)}
+    </div>
+  );
+}
+
+export interface OperationDialogProps<TData> {
+  open: boolean;
+  onClose: () => void;
+
+  color?: ThemeColor;
+  inputColor?: ThemeColor;
+  title: Text;
+  inputPrompt?: Text;
+  inputPromptNode?: ReactNode;
+  successPrompt?: (data: TData) => Text;
+  successPromptNode?: (data: TData) => ReactNode;
+  failurePrompt?: (error: unknown) => Text;
+  failurePromptNode?: (error: unknown) => ReactNode;
+
+  inputs: InputInitializer;
+
+  onProcess: (inputs: InputConfirmValueDict) => Promise<TData>;
+  onSuccessAndClose?: (data: TData) => void;
+}
+
+function OperationDialog<TData>(props: OperationDialogProps<TData>) {
+  const {
+    open,
+    onClose,
+    color,
+    inputColor,
+    title,
+    inputPrompt,
+    inputPromptNode,
+    successPrompt,
+    successPromptNode,
+    failurePrompt,
+    failurePromptNode,
+    inputs,
+    onProcess,
+    onSuccessAndClose,
+  } = props;
+
+  if (process.env.NODE_ENV === "development") {
+    if (inputPrompt && inputPromptNode) {
+      console.log("InputPrompt and inputPromptNode are both set.");
+    }
+    if (successPrompt && successPromptNode) {
+      console.log("SuccessPrompt and successPromptNode are both set.");
+    }
+    if (failurePrompt && failurePromptNode) {
+      console.log("FailurePrompt and failurePromptNode are both set.");
+    }
+  }
+
+  type Step =
+    | { type: "input" }
+    | { type: "process" }
+    | {
+        type: "success";
+        data: TData;
+      }
+    | {
+        type: "failure";
+        data: unknown;
+      };
+
+  const [step, setStep] = useState<Step>({ type: "input" });
+
+  const { inputGroupProps, hasErrorAndDirty, setAllDisabled, confirm } =
+    useInputs({
+      init: inputs,
+    });
+
+  function close() {
+    if (step.type !== "process") {
+      onClose();
+      if (step.type === "success" && onSuccessAndClose) {
+        onSuccessAndClose?.(step.data);
+      }
+    } else {
+      console.log("Attempt to close modal dialog when processing.");
+    }
+  }
+
+  function onConfirm() {
+    const result = confirm();
+    if (result.type === "ok") {
+      setStep({ type: "process" });
+      setAllDisabled(true);
+      onProcess(result.values).then(
+        (d) => {
+          setStep({
+            type: "success",
+            data: d,
+          });
+        },
+        (e: unknown) => {
+          setStep({
+            type: "failure",
+            data: e,
+          });
+        },
+      );
+    }
+  }
+
+  let body: ReactNode;
+  let buttons: ComponentProps<typeof ButtonRow>["buttons"];
+
+  if (step.type === "input" || step.type === "process") {
+    const isProcessing = step.type === "process";
+
+    body = (
+      <div>
+        <OperationDialogPrompt
+          customMessage={inputPrompt}
+          customMessageNode={inputPromptNode}
+        />
+        <InputGroup
+          containerClassName="cru-operation-dialog-input-group"
+          color={inputColor ?? "primary"}
+          {...inputGroupProps}
+        />
+      </div>
+    );
+    buttons = [
+      {
+        key: "cancel",
+        type: "normal",
+        props: {
+          text: "operationDialog.cancel",
+          color: "secondary",
+          outline: true,
+          onClick: close,
+          disabled: isProcessing,
+        },
+      },
+      {
+        key: "confirm",
+        type: "loading",
+        props: {
+          text: "operationDialog.confirm",
+          color,
+          loading: isProcessing,
+          disabled: hasErrorAndDirty,
+          onClick: onConfirm,
+        },
+      },
+    ];
+  } else {
+    const result = step;
+
+    const promptProps: OperationDialogPromptProps =
+      result.type === "success"
+        ? {
+            message: "operationDialog.success",
+            customMessage: successPrompt?.(result.data),
+            customMessageNode: successPromptNode?.(result.data),
+          }
+        : {
+            message: "operationDialog.error",
+            customMessage: failurePrompt?.(result.data),
+            customMessageNode: failurePromptNode?.(result.data),
+          };
+    body = (
+      <div>
+        <OperationDialogPrompt {...promptProps} />
+      </div>
+    );
+
+    buttons = [
+      {
+        key: "ok",
+        type: "normal",
+        props: {
+          text: "operationDialog.ok",
+          color: "primary",
+          onClick: close,
+        },
+      },
+    ];
+  }
+
+  return (
+    <Dialog open={open} onClose={close}>
+      <DialogContainer title={title} titleColor={color} buttons={buttons}>
+        {body}
+      </DialogContainer>
+    </Dialog>
+  );
+}
+
+export default OperationDialog;
diff --git a/FrontEnd/src/components/dialog/index.ts b/FrontEnd/src/components/dialog/index.ts
new file mode 100644
index 00000000..59f15791
--- /dev/null
+++ b/FrontEnd/src/components/dialog/index.ts
@@ -0,0 +1,64 @@
+import { useState } from "react";
+
+export { default as Dialog } from "./Dialog";
+export { default as FullPageDialog } from "./FullPageDialog";
+export { default as OperationDialog } from "./OperationDialog";
+export { default as ConfirmDialog } from "./ConfirmDialog";
+
+type DialogMap<D extends string, V> = {
+  [K in D]: V;
+};
+
+type DialogKeyMap<D extends string> = DialogMap<D, number>;
+
+type DialogPropsMap<D extends string> = DialogMap<
+  D,
+  { key: number | string; open: boolean; onClose: () => void }
+>;
+
+export function useDialog<D extends string>(
+  dialogs: D[],
+  options?: {
+    initDialog?: D | null;
+    onClose?: {
+      [K in D]?: () => void;
+    };
+  },
+): {
+  dialog: D | null;
+  switchDialog: (newDialog: D | null) => void;
+  dialogPropsMap: DialogPropsMap<D>;
+  createDialogSwitch: (newDialog: D | null) => () => void;
+} {
+  const [dialog, setDialog] = useState<D | null>(options?.initDialog ?? null);
+
+  const [dialogKeys, setDialogKeys] = useState<DialogKeyMap<D>>(
+    () => Object.fromEntries(dialogs.map((d) => [d, 0])) as DialogKeyMap<D>,
+  );
+
+  const switchDialog = (newDialog: D | null) => {
+    if (dialog !== null) {
+      setDialogKeys({ ...dialogKeys, [dialog]: dialogKeys[dialog] + 1 });
+    }
+    setDialog(newDialog);
+  };
+
+  return {
+    dialog,
+    switchDialog,
+    dialogPropsMap: Object.fromEntries(
+      dialogs.map((d) => [
+        d,
+        {
+          key: `${d}-${dialogKeys[d]}`,
+          open: dialog === d,
+          onClose: () => {
+            switchDialog(null);
+            options?.onClose?.[d]?.();
+          },
+        },
+      ]),
+    ) as DialogPropsMap<D>,
+    createDialogSwitch: (newDialog: D | null) => () => switchDialog(newDialog),
+  };
+}
diff --git a/FrontEnd/src/components/hooks.ts b/FrontEnd/src/components/hooks.ts
new file mode 100644
index 00000000..523a4538
--- /dev/null
+++ b/FrontEnd/src/components/hooks.ts
@@ -0,0 +1,14 @@
+// TODO: Migrate hooks
+
+export {
+  useIsSmallScreen,
+  useClickOutside,
+  useScrollToBottom,
+} from "~src/utilities/hooks";
+
+import { useMediaQuery } from "react-responsive";
+import { breakpoints } from "./breakpoints";
+
+export function useMobile(): boolean {
+  return useMediaQuery({ maxWidth: breakpoints.sm });
+}
diff --git a/FrontEnd/src/components/index.css b/FrontEnd/src/components/index.css
new file mode 100644
index 00000000..a8f5e9a5
--- /dev/null
+++ b/FrontEnd/src/components/index.css
@@ -0,0 +1,100 @@
+@import "./theme.css";
+
+* {
+  box-sizing: border-box;
+  margin-inline: 0;
+  margin-block: 0;
+}
+
+body {
+  font-family: var(--cru-default-font-family);
+  background: var(--cru-body-background-color);
+  color: var(--cru-text-primary-color);
+  line-height: 1.2;
+}
+
+.cru-page {
+  padding: var(--cru-page-padding);
+}
+
+.cru-page-no-top-padding {
+  padding-top: 0;
+}
+
+.cru-text-center {
+  text-align: center;
+}
+
+.cru-text-end {
+  text-align: end;
+}
+
+.cru-float-left {
+  float: left;
+}
+
+.cru-float-right {
+  float: right;
+}
+
+.cru-align-text-bottom {
+  vertical-align: text-bottom;
+}
+
+.cru-align-middle {
+  vertical-align: middle;
+}
+
+.cru-clearfix::after {
+  clear: both;
+}
+
+.cru-fill-parent {
+  width: 100%;
+  height: 100%;
+}
+
+.cru-avatar {
+  width: 60px;
+  height: 60px;
+}
+
+.cru-avatar.large {
+  width: 100px;
+  height: 100px;
+}
+
+.cru-avatar.small {
+  width: 40px;
+  height: 40px;
+}
+
+.cru-round {
+  border-radius: 50%;
+}
+
+.cru-tab-pages-action-area {
+  display: flex;
+  align-items: center;
+}
+
+.alert-container {
+  position: fixed;
+  z-index: 1070;
+}
+
+@media (min-width: 576px) {
+  .alert-container {
+    bottom: 0;
+    right: 0;
+  }
+}
+
+@media (max-width: 575.98px) {
+  .alert-container {
+    bottom: 0;
+    right: 0;
+    left: 0;
+    text-align: center;
+  }
+}
\ No newline at end of file
diff --git a/FrontEnd/src/components/input/InputGroup.css b/FrontEnd/src/components/input/InputGroup.css
new file mode 100644
index 00000000..7e905b1e
--- /dev/null
+++ b/FrontEnd/src/components/input/InputGroup.css
@@ -0,0 +1,54 @@
+.cru-input-group {
+  display: block;
+}
+
+.cru-input-container {
+  margin: 0.4em 0;
+}
+
+.cru-input-label {
+  display: block;
+  color: var(--cru-clickable-normal-color);
+  font-size: 0.9em;
+  margin-bottom: 0.3em;
+}
+
+.cru-input-label-inline {
+  margin-inline-start: 0.5em;
+}
+
+.cru-input-type-text input {
+  appearance: none;
+  display: block;
+  border: 1px solid;
+  /* color: var(--cru-surface-on-color); */
+  /* background-color: var(--cru-surface-color); */
+  margin: 0;
+  font-size: 1em;
+  padding: 0.2em;
+}
+
+.cru-input-type-text input:hover {
+  border-color: var(--cru-clickable-hover-color);
+}
+
+.cru-input-type-text input:focus {
+  border-color: var(--cru-clickable-focus-color);
+}
+
+.cru-input-type-text input:disabled {
+  border-color: var(--cru-clickable-disabled-color);
+}
+
+.cru-input-error {
+  display: block;
+  font-size: 0.8em;
+  color: var(--cru-danger-color);
+  margin-top: 0.4em;
+}
+
+.cru-input-helper {
+  display: block;
+  font-size: 0.8em;
+  color: var(--cru-primary-color);
+}
\ No newline at end of file
diff --git a/FrontEnd/src/components/input/InputGroup.tsx b/FrontEnd/src/components/input/InputGroup.tsx
new file mode 100644
index 00000000..4f487344
--- /dev/null
+++ b/FrontEnd/src/components/input/InputGroup.tsx
@@ -0,0 +1,463 @@
+/**
+ * Some notes for InputGroup:
+ * This is one of the most complicated components in this project.
+ * Probably because the feature is complex and involved user inputs.
+ *
+ * I hope it contains following features:
+ * - Input features
+ *   - Supports a wide range of input types.
+ *   - Validator to validate user inputs.
+ *   - Can set initial values.
+ *   - Dirty, aka, has user touched this input.
+ * - Developer friendly
+ *   - Easy to use APIs.
+ *   - Type check as much as possible.
+ * - UI
+ *   - Configurable appearance.
+ *   - Can display helper and error messages.
+ * - Easy to extend, like new input types.
+ *
+ * So here is some design decisions:
+ * Inputs are identified by its _key_.
+ * `InputGroup` component takes care of only UI and no logic.
+ * `useInputs` hook takes care of logic and generate props for `InputGroup`.
+ */
+
+import { useState, Ref, useId } from "react";
+import classNames from "classnames";
+
+import { useC, Text, ThemeColor } from "../common";
+
+import "./InputGroup.css";
+
+export interface InputBase {
+  key: string;
+  label: Text;
+  helper?: Text;
+  disabled?: boolean;
+  error?: Text;
+}
+
+export interface TextInput extends InputBase {
+  type: "text";
+  value: string;
+  password?: boolean;
+}
+
+export interface BoolInput extends InputBase {
+  type: "bool";
+  value: boolean;
+}
+
+export interface SelectInputOption {
+  value: string;
+  label: Text;
+  icon?: string;
+}
+
+export interface SelectInput extends InputBase {
+  type: "select";
+  value: string;
+  options: SelectInputOption[];
+}
+
+export type Input = TextInput | BoolInput | SelectInput;
+
+export type InputValue = Input["value"];
+
+export type InputValueDict = Record<string, InputValue>;
+export type InputErrorDict = Record<string, Text>;
+export type InputDisabledDict = Record<string, boolean>;
+export type InputDirtyDict = Record<string, boolean>;
+// use never so you don't have to cast everywhere
+export type InputConfirmValueDict = Record<string, never>;
+
+export type GeneralInputErrorDict =
+  | {
+      [key: string]: Text | null | undefined;
+    }
+  | null
+  | undefined;
+
+type MakeInputInfo<I extends Input> = Omit<I, "value" | "error" | "disabled">;
+
+export type InputInfo = {
+  [I in Input as I["type"]]: MakeInputInfo<I>;
+}[Input["type"]];
+
+export type Validator = (
+  values: InputValueDict,
+  inputs: InputInfo[],
+) => GeneralInputErrorDict;
+
+export type InputScheme = {
+  inputs: InputInfo[];
+  validator?: Validator;
+};
+
+export type InputData = {
+  values: InputValueDict;
+  errors: InputErrorDict;
+  disabled: InputDisabledDict;
+  dirties: InputDirtyDict;
+};
+
+export type State = {
+  scheme: InputScheme;
+  data: InputData;
+};
+
+export type DataInitialization = {
+  values?: InputValueDict;
+  errors?: GeneralInputErrorDict;
+  disabled?: InputDisabledDict;
+  dirties?: InputDirtyDict;
+};
+
+export type Initialization = {
+  scheme: InputScheme;
+  dataInit?: DataInitialization;
+};
+
+export type GeneralInitialization = Initialization | InputScheme | InputInfo[];
+
+export type Initializer = GeneralInitialization | (() => GeneralInitialization);
+
+export interface InputGroupProps {
+  color?: ThemeColor;
+  containerClassName?: string;
+  containerRef?: Ref<HTMLDivElement>;
+
+  inputs: Input[];
+  onChange: (index: number, value: Input["value"]) => void;
+}
+
+function cleanObject<V>(o: Record<string, V>): Record<string, NonNullable<V>> {
+  const result = { ...o };
+  for (const key of Object.keys(result)) {
+    if (result[key] == null) {
+      delete result[key];
+    }
+  }
+  return result as never;
+}
+
+export type ConfirmResult =
+  | {
+      type: "ok";
+      values: InputConfirmValueDict;
+    }
+  | {
+      type: "error";
+      errors: InputErrorDict;
+    };
+
+function validate(
+  validator: Validator | null | undefined,
+  values: InputValueDict,
+  inputs: InputInfo[],
+): InputErrorDict {
+  return cleanObject(validator?.(values, inputs) ?? {});
+}
+
+export function useInputs(options: { init: Initializer }): {
+  inputGroupProps: InputGroupProps;
+  hasError: boolean;
+  hasErrorAndDirty: boolean;
+  confirm: () => ConfirmResult;
+  setAllDisabled: (disabled: boolean) => void;
+} {
+  function initializeValue(
+    input: InputInfo,
+    value?: InputValue | null,
+  ): InputValue {
+    if (input.type === "text") {
+      return value ?? "";
+    } else if (input.type === "bool") {
+      return value ?? false;
+    } else if (input.type === "select") {
+      return value ?? input.options[0].value;
+    }
+    throw new Error("Unknown input type");
+  }
+
+  function initialize(generalInitialization: GeneralInitialization): State {
+    const initialization: Initialization = Array.isArray(generalInitialization)
+      ? { scheme: { inputs: generalInitialization } }
+      : "scheme" in generalInitialization
+      ? generalInitialization
+      : { scheme: generalInitialization };
+
+    const { scheme, dataInit } = initialization;
+    const { inputs, validator } = scheme;
+    const keys = inputs.map((input) => input.key);
+
+    if (process.env.NODE_ENV === "development") {
+      const checkKeys = (dict: Record<string, unknown> | undefined) => {
+        if (dict != null) {
+          for (const key of Object.keys(dict)) {
+            if (!keys.includes(key)) {
+              console.warn("");
+            }
+          }
+        }
+      };
+
+      checkKeys(dataInit?.values);
+      checkKeys(dataInit?.errors ?? {});
+      checkKeys(dataInit?.disabled);
+      checkKeys(dataInit?.dirties);
+    }
+
+    function clean<V>(
+      dict: Record<string, V> | null | undefined,
+    ): Record<string, NonNullable<V>> {
+      return dict != null ? cleanObject(dict) : {};
+    }
+
+    const values: InputValueDict = {};
+    const disabled: InputDisabledDict = clean(dataInit?.disabled);
+    const dirties: InputDirtyDict = clean(dataInit?.dirties);
+    const isErrorSet = dataInit?.errors != null;
+    let errors: InputErrorDict = clean(dataInit?.errors);
+
+    for (let i = 0; i < inputs.length; i++) {
+      const input = inputs[i];
+      const { key } = input;
+
+      values[key] = initializeValue(input, dataInit?.values?.[key]);
+    }
+
+    if (isErrorSet) {
+      if (process.env.NODE_ENV === "development") {
+        console.log(
+          "You explicitly set errors (not undefined) in initializer, so validator won't run.",
+        );
+      }
+    } else {
+      errors = validate(validator, values, inputs);
+    }
+
+    return {
+      scheme,
+      data: {
+        values,
+        errors,
+        disabled,
+        dirties,
+      },
+    };
+  }
+
+  const { init } = options;
+  const initializer = typeof init === "function" ? init : () => init;
+
+  const [state, setState] = useState<State>(() => initialize(initializer()));
+
+  const { scheme, data } = state;
+  const { validator } = scheme;
+
+  function createAllBooleanDict(value: boolean): Record<string, boolean> {
+    const result: InputDirtyDict = {};
+    for (const key of scheme.inputs.map((input) => input.key)) {
+      result[key] = value;
+    }
+    return result;
+  }
+
+  const createAllDirties = () => createAllBooleanDict(true);
+
+  const componentInputs: Input[] = [];
+
+  for (let i = 0; i < scheme.inputs.length; i++) {
+    const input = scheme.inputs[i];
+    const value = data.values[input.key];
+    const error = data.errors[input.key];
+    const disabled = data.disabled[input.key] ?? false;
+    const dirty = data.dirties[input.key] ?? false;
+    const componentInput: Input = {
+      ...input,
+      value: value as never,
+      disabled,
+      error: dirty ? error : undefined,
+    };
+    componentInputs.push(componentInput);
+  }
+
+  const hasError = Object.keys(data.errors).length > 0;
+  const hasDirty = Object.keys(data.dirties).some((key) => data.dirties[key]);
+
+  return {
+    inputGroupProps: {
+      inputs: componentInputs,
+      onChange: (index, value) => {
+        const input = scheme.inputs[index];
+        const { key } = input;
+        const newValues = { ...data.values, [key]: value };
+        const newDirties = { ...data.dirties, [key]: true };
+        const newErrors = validate(validator, newValues, scheme.inputs);
+        setState({
+          scheme,
+          data: {
+            ...data,
+            values: newValues,
+            errors: newErrors,
+            dirties: newDirties,
+          },
+        });
+      },
+    },
+    hasError,
+    hasErrorAndDirty: hasError && hasDirty,
+    confirm() {
+      const newDirties = createAllDirties();
+      const newErrors = validate(validator, data.values, scheme.inputs);
+
+      setState({
+        scheme,
+        data: {
+          ...data,
+          dirties: newDirties,
+          errors: newErrors,
+        },
+      });
+
+      if (Object.keys(newErrors).length !== 0) {
+        return {
+          type: "error",
+          errors: newErrors,
+        };
+      } else {
+        return {
+          type: "ok",
+          values: data.values as InputConfirmValueDict,
+        };
+      }
+    },
+    setAllDisabled(disabled: boolean) {
+      setState({
+        scheme,
+        data: {
+          ...data,
+          disabled: createAllBooleanDict(disabled),
+        },
+      });
+    },
+  };
+}
+
+export function InputGroup({
+  color,
+  inputs,
+  onChange,
+  containerRef,
+  containerClassName,
+}: InputGroupProps) {
+  const c = useC();
+
+  const id = useId();
+
+  return (
+    <div
+      ref={containerRef}
+      className={classNames(
+        "cru-input-group",
+        `cru-clickable-${color ?? "primary"}`,
+        containerClassName,
+      )}
+    >
+      {inputs.map((item, index) => {
+        const { key, type, value, label, error, helper, disabled } = item;
+
+        const getContainerClassName = (
+          ...additionalClassNames: classNames.ArgumentArray
+        ) =>
+          classNames(
+            `cru-input-container cru-input-type-${type}`,
+            error && "error",
+            ...additionalClassNames,
+          );
+
+        const changeValue = (value: InputValue) => {
+          onChange(index, value);
+        };
+
+        const inputId = `${id}-${key}`;
+
+        if (type === "text") {
+          const { password } = item;
+          return (
+            <div
+              key={key}
+              className={getContainerClassName(password && "password")}
+            >
+              {label && (
+                <label className="cru-input-label" htmlFor={inputId}>
+                  {c(label)}
+                </label>
+              )}
+              <input
+                id={inputId}
+                type={password ? "password" : "text"}
+                value={value}
+                onChange={(event) => {
+                  const v = event.target.value;
+                  changeValue(v);
+                }}
+                disabled={disabled}
+              />
+              {error && <div className="cru-input-error">{c(error)}</div>}
+              {helper && <div className="cru-input-helper">{c(helper)}</div>}
+            </div>
+          );
+        } else if (type === "bool") {
+          return (
+            <div key={key} className={getContainerClassName()}>
+              <input
+                id={inputId}
+                type="checkbox"
+                checked={value}
+                onChange={(event) => {
+                  const v = event.currentTarget.checked;
+                  changeValue(v);
+                }}
+                disabled={disabled}
+              />
+              <label className="cru-input-label-inline" htmlFor={inputId}>
+                {c(label)}
+              </label>
+              {error && <div className="cru-input-error">{c(error)}</div>}
+              {helper && <div className="cru-input-helper">{c(helper)}</div>}
+            </div>
+          );
+        } else if (type === "select") {
+          return (
+            <div key={key} className={getContainerClassName()}>
+              <label className="cru-input-label" htmlFor={inputId}>
+                {c(label)}
+              </label>
+              <select
+                id={inputId}
+                value={value}
+                onChange={(event) => {
+                  const e = event.target.value;
+                  changeValue(e);
+                }}
+                disabled={disabled}
+              >
+                {item.options.map((option) => {
+                  return (
+                    <option value={option.value} key={option.value}>
+                      {option.icon}
+                      {c(option.label)}
+                    </option>
+                  );
+                })}
+              </select>
+            </div>
+          );
+        }
+      })}
+    </div>
+  );
+}
diff --git a/FrontEnd/src/components/input/index.ts b/FrontEnd/src/components/input/index.ts
new file mode 100644
index 00000000..ca183089
--- /dev/null
+++ b/FrontEnd/src/components/input/index.ts
@@ -0,0 +1,11 @@
+export { useInputs, InputGroup } from "./InputGroup";
+
+export type {
+  InputValueDict,
+  InputErrorDict,
+  InputDirtyDict,
+  InputDisabledDict,
+  InputConfirmValueDict,
+  Validator,
+  Initializer,
+} from "./InputGroup";
diff --git a/FrontEnd/src/components/list/ListContainer.css b/FrontEnd/src/components/list/ListContainer.css
new file mode 100644
index 00000000..53781834
--- /dev/null
+++ b/FrontEnd/src/components/list/ListContainer.css
@@ -0,0 +1,4 @@
+.cru-list-container {
+  border: 1px solid var(--cru-clickable-primary-normal-color);
+  border-radius: 5px;
+}
diff --git a/FrontEnd/src/components/list/ListContainer.tsx b/FrontEnd/src/components/list/ListContainer.tsx
new file mode 100644
index 00000000..aa00d12c
--- /dev/null
+++ b/FrontEnd/src/components/list/ListContainer.tsx
@@ -0,0 +1,23 @@
+import { ComponentPropsWithoutRef, forwardRef, Ref } from "react";
+import classNames from "classnames";
+
+import "./ListContainer.css"
+
+function _ListContainer(
+  { className, children, ...otherProps }: ComponentPropsWithoutRef<"div">,
+  ref: Ref<HTMLDivElement>,
+) {
+  return (
+    <div
+      ref={ref}
+      className={classNames("cru-list-container", className)}
+      {...otherProps}
+    >
+      {children}
+    </div>
+  );
+}
+
+const ListContainer = forwardRef(_ListContainer);
+
+export default ListContainer;
diff --git a/FrontEnd/src/components/list/ListItemContainer.css b/FrontEnd/src/components/list/ListItemContainer.css
new file mode 100644
index 00000000..8d7afa9f
--- /dev/null
+++ b/FrontEnd/src/components/list/ListItemContainer.css
@@ -0,0 +1,3 @@
+.cru-list-item-container {
+  border: 1px solid var(--cru-clickable-primary-normal-color);
+}
diff --git a/FrontEnd/src/components/list/ListItemContainer.tsx b/FrontEnd/src/components/list/ListItemContainer.tsx
new file mode 100644
index 00000000..315cbd6e
--- /dev/null
+++ b/FrontEnd/src/components/list/ListItemContainer.tsx
@@ -0,0 +1,23 @@
+import { ComponentPropsWithoutRef, forwardRef, Ref } from "react";
+import classNames from "classnames";
+
+import "./ListItemContainer.css";
+
+function _ListItemContainer(
+  { className, children, ...otherProps }: ComponentPropsWithoutRef<"div">,
+  ref: Ref<HTMLDivElement>,
+) {
+  return (
+    <div
+      ref={ref}
+      className={classNames("cru-list-item-container", className)}
+      {...otherProps}
+    >
+      {children}
+    </div>
+  );
+}
+
+const ListItemContainer = forwardRef(_ListItemContainer);
+
+export default ListItemContainer;
diff --git a/FrontEnd/src/components/list/index.ts b/FrontEnd/src/components/list/index.ts
new file mode 100644
index 00000000..e183f7da
--- /dev/null
+++ b/FrontEnd/src/components/list/index.ts
@@ -0,0 +1,4 @@
+import ListContainer from "./ListContainer";
+import ListItemContainer from "./ListItemContainer";
+
+export { ListContainer, ListItemContainer };
diff --git a/FrontEnd/src/components/menu/Menu.css b/FrontEnd/src/components/menu/Menu.css
new file mode 100644
index 00000000..75734533
--- /dev/null
+++ b/FrontEnd/src/components/menu/Menu.css
@@ -0,0 +1,36 @@
+.cru-menu {
+  min-width: 200px;
+}
+
+.cru-menu-item {
+  display: block;
+  font-size: 1em;
+  width: 100%;
+  padding: 0.5em 1.5em;
+  transition: all 0.5s;
+  color: var(--cru-clickable-normal-color);
+  background-color: var(--cru-clickable-grayscale-normal-color);
+  border: none;
+  cursor: pointer;
+}
+
+.cru-menu-item:hover {
+  background-color: var(--cru-clickable-grayscale-hover-color);
+}
+
+.cru-menu-item:focus {
+  background-color: var(--cru-clickable-grayscale-focus-color);
+}
+
+.cru-menu-item:active {
+  background-color: var(--cru-clickable-grayscale-active-color);
+}
+
+.cru-menu-item-icon {
+  margin-right: 1em;
+}
+
+.cru-menu-divider {
+  border-width: 0;
+  border-top: 1px solid var(--cru-primary-color);
+}
\ No newline at end of file
diff --git a/FrontEnd/src/components/menu/Menu.tsx b/FrontEnd/src/components/menu/Menu.tsx
new file mode 100644
index 00000000..e8099c76
--- /dev/null
+++ b/FrontEnd/src/components/menu/Menu.tsx
@@ -0,0 +1,62 @@
+import { CSSProperties } from "react";
+import classNames from "classnames";
+
+import { useC, Text, ThemeColor } from "../common";
+
+import "./Menu.css";
+import Icon from "../Icon";
+
+export type MenuItem =
+  | {
+      type: "divider";
+    }
+  | {
+      type: "button";
+      text: Text;
+      icon?: string;
+      color?: ThemeColor;
+      onClick: () => void;
+    };
+
+export type MenuItems = MenuItem[];
+
+export type MenuProps = {
+  items: MenuItems;
+  onItemClicked?: () => void;
+  className?: string;
+  style?: CSSProperties;
+};
+
+export default function Menu({
+  items,
+  onItemClicked,
+  className,
+  style,
+}: MenuProps) {
+  const c = useC();
+
+  return (
+    <div className={classNames("cru-menu", className)} style={style}>
+      {items.map((item, index) => {
+        if (item.type === "divider") {
+          return <hr key={index} className="cru-menu-divider" />;
+        } else {
+          const { text, color, icon, onClick } = item;
+          return (
+            <button
+              key={index}
+              className={`cru-menu-item cru-clickable-${color ?? "primary"}`}
+              onClick={() => {
+                onClick();
+                onItemClicked?.();
+              }}
+            >
+              {icon != null && <Icon color={color} icon={icon} />}
+              {c(text)}
+            </button>
+          );
+        }
+      })}
+    </div>
+  );
+}
diff --git a/FrontEnd/src/components/menu/PopupMenu.css b/FrontEnd/src/components/menu/PopupMenu.css
new file mode 100644
index 00000000..149e0699
--- /dev/null
+++ b/FrontEnd/src/components/menu/PopupMenu.css
@@ -0,0 +1,7 @@
+.cru-popup-menu-menu-container {
+  z-index: 1040;
+  border-radius: 3px;
+  border: var(--cru-clickable-normal-color) 1.5px solid;
+  background-color: var(--cru-background-color);
+  overflow: hidden;
+}
diff --git a/FrontEnd/src/components/menu/PopupMenu.tsx b/FrontEnd/src/components/menu/PopupMenu.tsx
new file mode 100644
index 00000000..23a67f79
--- /dev/null
+++ b/FrontEnd/src/components/menu/PopupMenu.tsx
@@ -0,0 +1,73 @@
+import { useState, CSSProperties, ReactNode } from "react";
+import classNames from "classnames";
+import { createPortal } from "react-dom";
+import { usePopper } from "react-popper";
+
+import { useClickOutside } from "~src/utilities/hooks";
+
+import Menu, { MenuItems } from "./Menu";
+
+import { ThemeColor } from "../common";
+
+import "./PopupMenu.css";
+
+export interface PopupMenuProps {
+  color?: ThemeColor;
+  items: MenuItems;
+  children?: ReactNode;
+  containerClassName?: string;
+  containerStyle?: CSSProperties;
+}
+
+export default function PopupMenu({
+  color,
+  items,
+  children,
+  containerClassName,
+  containerStyle,
+}: PopupMenuProps) {
+  const [show, setShow] = useState<boolean>(false);
+
+  const [referenceElement, setReferenceElement] =
+    useState<HTMLDivElement | null>(null);
+  const [popperElement, setPopperElement] = useState<HTMLDivElement | null>(
+    null,
+  );
+  const { styles, attributes } = usePopper(referenceElement, popperElement);
+
+  useClickOutside(popperElement, () => setShow(false), true);
+
+  return (
+    <div
+      ref={setReferenceElement}
+      className={classNames(
+        "cru-popup-menu-trigger-container",
+        containerClassName,
+      )}
+      style={containerStyle}
+      onClick={() => setShow(true)}
+    >
+      {children}
+      {show &&
+        createPortal(
+          <div
+            ref={setPopperElement}
+            className={`cru-popup-menu-menu-container cru-clickable-${
+              color ?? "primary"
+            }`}
+            style={styles.popper}
+            {...attributes.popper}
+          >
+            <Menu
+              items={items}
+              onItemClicked={() => {
+                setShow(false);
+              }}
+            />
+          </div>,
+          // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+          document.getElementById("portal")!,
+        )}
+    </div>
+  );
+}
diff --git a/FrontEnd/src/components/tab/TabPages.tsx b/FrontEnd/src/components/tab/TabPages.tsx
new file mode 100644
index 00000000..6a5f4469
--- /dev/null
+++ b/FrontEnd/src/components/tab/TabPages.tsx
@@ -0,0 +1,71 @@
+import * as React from "react";
+
+import { I18nText, UiLogicError } from "~src/common";
+
+import Tabs from "./Tabs";
+
+export interface TabPage {
+  name: string;
+  text: I18nText;
+  page: React.ReactNode;
+}
+
+export interface TabPagesProps {
+  pages: TabPage[];
+  actions?: React.ReactNode;
+  dense?: boolean;
+  className?: string;
+  style?: React.CSSProperties;
+  navClassName?: string;
+  navStyle?: React.CSSProperties;
+  pageContainerClassName?: string;
+  pageContainerStyle?: React.CSSProperties;
+}
+
+const TabPages: React.FC<TabPagesProps> = ({
+  pages,
+  actions,
+  dense,
+  className,
+  style,
+  navClassName,
+  navStyle,
+  pageContainerClassName,
+  pageContainerStyle,
+}) => {
+  if (pages.length === 0) {
+    throw new UiLogicError("Page list can't be empty.");
+  }
+
+  const [tab, setTab] = React.useState<string>(pages[0].name);
+
+  const currentPage = pages.find((p) => p.name === tab);
+
+  if (currentPage == null) {
+    throw new UiLogicError("Current tab value is bad.");
+  }
+
+  return (
+    <div className={className} style={style}>
+      <Tabs
+        tabs={pages.map((page) => ({
+          name: page.name,
+          text: page.text,
+          onClick: () => {
+            setTab(page.name);
+          },
+        }))}
+        dense={dense}
+        activeTabName={tab}
+        className={navClassName}
+        style={navStyle}
+        actions={actions}
+      />
+      <div className={pageContainerClassName} style={pageContainerStyle}>
+        {currentPage.page}
+      </div>
+    </div>
+  );
+};
+
+export default TabPages;
diff --git a/FrontEnd/src/components/tab/Tabs.css b/FrontEnd/src/components/tab/Tabs.css
new file mode 100644
index 00000000..395d16a7
--- /dev/null
+++ b/FrontEnd/src/components/tab/Tabs.css
@@ -0,0 +1,33 @@
+.cru-nav {
+  border-bottom: var(--cru-primary-color) 1px solid;
+  display: flex;
+}
+
+.cru-nav-item {
+  color: var(--cru-primary-color);
+  border: var(--cru-background-2-color) 0.5px solid;
+  border-bottom: none;
+  padding: 0.5em 1.5em;
+  border-top-left-radius: 5px;
+  border-top-right-radius: 5px;
+  transition: all 0.5s;
+  cursor: pointer;
+}
+
+.cru-nav.dense .cru-nav-item {
+  padding: 0.2em 1em;
+}
+
+.cru-nav-item:hover {
+  background-color: var(--cru-background-1-color);
+}
+
+.cru-nav-item.active {
+  color: var(--cru-primary-t-color);
+  background-color: var(--cru-primary-color);
+  border-color: var(--cru-primary-color);
+}
+
+.cru-nav-action-area {
+  margin-left: auto;
+}
diff --git a/FrontEnd/src/components/tab/Tabs.tsx b/FrontEnd/src/components/tab/Tabs.tsx
new file mode 100644
index 00000000..dc8d9c01
--- /dev/null
+++ b/FrontEnd/src/components/tab/Tabs.tsx
@@ -0,0 +1,62 @@
+import * as React from "react";
+import { Link } from "react-router-dom";
+import { useTranslation } from "react-i18next";
+import classnames from "classnames";
+
+import { convertI18nText, I18nText } from "~src/common";
+
+import "./Tabs.css";
+
+export interface Tab {
+  name: string;
+  text: I18nText;
+  link?: string;
+  onClick?: () => void;
+}
+
+export interface TabsProps {
+  activeTabName?: string;
+  actions?: React.ReactNode;
+  dense?: boolean;
+  tabs: Tab[];
+  className?: string;
+  style?: React.CSSProperties;
+}
+
+export default function Tabs(props: TabsProps): React.ReactElement | null {
+  const { tabs, activeTabName, className, style, dense, actions } = props;
+
+  const { t } = useTranslation();
+
+  return (
+    <div
+      className={classnames("cru-nav", dense && "dense", className)}
+      style={style}
+    >
+      {tabs.map((tab) => {
+        const active = activeTabName === tab.name;
+        const className = classnames("cru-nav-item", active && "active");
+
+        if (tab.link != null) {
+          return (
+            <Link
+              key={tab.name}
+              to={tab.link}
+              onClick={tab.onClick}
+              className={className}
+            >
+              {convertI18nText(tab.text, t)}
+            </Link>
+          );
+        } else {
+          return (
+            <span key={tab.name} onClick={tab.onClick} className={className}>
+              {convertI18nText(tab.text, t)}
+            </span>
+          );
+        }
+      })}
+      <div className="cru-nav-action-area">{actions}</div>
+    </div>
+  );
+}
diff --git a/FrontEnd/src/components/theme-color.css b/FrontEnd/src/components/theme-color.css
new file mode 100644
index 00000000..24a7e267
--- /dev/null
+++ b/FrontEnd/src/components/theme-color.css
@@ -0,0 +1,173 @@
+/* Generated by theme-generator.ts */
+
+:root {
+  --cru-primary-color: hsl(210 100% 40%);
+  --cru-primary-1-color: hsl(210 100% 37%);
+  --cru-primary-2-color: hsl(210 100% 34%);
+  --cru-primary-on-color: hsl(210 100% 100%);
+  --cru-primary-container-color: hsl(210 100% 90%);
+  --cru-primary-container-1-color: hsl(210 100% 80%);
+  --cru-primary-container-2-color: hsl(210 100% 70%);
+  --cru-primary-on-container-color: hsl(210 100% 10%);
+  --cru-secondary-color: hsl(40 100% 40%);
+  --cru-secondary-1-color: hsl(40 100% 37%);
+  --cru-secondary-2-color: hsl(40 100% 34%);
+  --cru-secondary-on-color: hsl(40 100% 100%);
+  --cru-secondary-container-color: hsl(40 100% 90%);
+  --cru-secondary-container-1-color: hsl(40 100% 80%);
+  --cru-secondary-container-2-color: hsl(40 100% 70%);
+  --cru-secondary-on-container-color: hsl(40 100% 10%);
+  --cru-tertiary-color: hsl(160 100% 40%);
+  --cru-tertiary-1-color: hsl(160 100% 37%);
+  --cru-tertiary-2-color: hsl(160 100% 34%);
+  --cru-tertiary-on-color: hsl(160 100% 100%);
+  --cru-tertiary-container-color: hsl(160 100% 90%);
+  --cru-tertiary-container-1-color: hsl(160 100% 80%);
+  --cru-tertiary-container-2-color: hsl(160 100% 70%);
+  --cru-tertiary-on-container-color: hsl(160 100% 10%);
+  --cru-danger-color: hsl(0 100% 40%);
+  --cru-danger-1-color: hsl(0 100% 37%);
+  --cru-danger-2-color: hsl(0 100% 34%);
+  --cru-danger-on-color: hsl(0 100% 100%);
+  --cru-danger-container-color: hsl(0 100% 90%);
+  --cru-danger-container-1-color: hsl(0 100% 80%);
+  --cru-danger-container-2-color: hsl(0 100% 70%);
+  --cru-danger-on-container-color: hsl(0 100% 10%);
+  --cru-success-color: hsl(120 60% 40%);
+  --cru-success-1-color: hsl(120 60% 37%);
+  --cru-success-2-color: hsl(120 60% 34%);
+  --cru-success-on-color: hsl(120 60% 100%);
+  --cru-success-container-color: hsl(120 60% 90%);
+  --cru-success-container-1-color: hsl(120 60% 80%);
+  --cru-success-container-2-color: hsl(120 60% 70%);
+  --cru-success-on-container-color: hsl(120 60% 10%);
+  --cru-surface-dim-color: hsl(0 0% 87%);
+  --cru-surface-color: hsl(0 0% 98%);
+  --cru-surface-1-color: hsl(0 0% 90%);
+  --cru-surface-2-color: hsl(0 0% 82%);
+  --cru-surface-bright-color: hsl(0 0% 98%);
+  --cru-surface-container-lowest-color: hsl(0 0% 100%);
+  --cru-surface-container-low-color: hsl(0 0% 96%);
+  --cru-surface-container-color: hsl(0 0% 94%);
+  --cru-surface-container-high-color: hsl(0 0% 92%);
+  --cru-surface-container-highest-color: hsl(0 0% 90%);
+  --cru-surface-on-color: hsl(0 0% 10%);
+  --cru-surface-on-variant-color: hsl(0 0% 30%);
+  --cru-surface-outline-color: hsl(0 0% 50%);
+  --cru-surface-outline-variant-color: hsl(0 0% 80%);
+}
+
+@media (prefers-color-scheme: dark) {
+  :root {
+    --cru-primary-color: hsl(210 100% 80%);
+    --cru-primary-1-color: hsl(210 100% 75%);
+    --cru-primary-2-color: hsl(210 100% 68%);
+    --cru-primary-on-color: hsl(210 100% 20%);
+    --cru-primary-container-color: hsl(210 100% 30%);
+    --cru-primary-container-1-color: hsl(210 100% 25%);
+    --cru-primary-container-2-color: hsl(210 100% 20%);
+    --cru-primary-on-container-color: hsl(210 100% 90%);
+    --cru-secondary-color: hsl(40 100% 80%);
+    --cru-secondary-1-color: hsl(40 100% 75%);
+    --cru-secondary-2-color: hsl(40 100% 68%);
+    --cru-secondary-on-color: hsl(40 100% 20%);
+    --cru-secondary-container-color: hsl(40 100% 30%);
+    --cru-secondary-container-1-color: hsl(40 100% 25%);
+    --cru-secondary-container-2-color: hsl(40 100% 20%);
+    --cru-secondary-on-container-color: hsl(40 100% 90%);
+    --cru-tertiary-color: hsl(160 100% 80%);
+    --cru-tertiary-1-color: hsl(160 100% 75%);
+    --cru-tertiary-2-color: hsl(160 100% 68%);
+    --cru-tertiary-on-color: hsl(160 100% 20%);
+    --cru-tertiary-container-color: hsl(160 100% 30%);
+    --cru-tertiary-container-1-color: hsl(160 100% 25%);
+    --cru-tertiary-container-2-color: hsl(160 100% 20%);
+    --cru-tertiary-on-container-color: hsl(160 100% 90%);
+    --cru-danger-color: hsl(0 100% 80%);
+    --cru-danger-1-color: hsl(0 100% 75%);
+    --cru-danger-2-color: hsl(0 100% 68%);
+    --cru-danger-on-color: hsl(0 100% 20%);
+    --cru-danger-container-color: hsl(0 100% 30%);
+    --cru-danger-container-1-color: hsl(0 100% 25%);
+    --cru-danger-container-2-color: hsl(0 100% 20%);
+    --cru-danger-on-container-color: hsl(0 100% 90%);
+    --cru-success-color: hsl(120 60% 80%);
+    --cru-success-1-color: hsl(120 60% 75%);
+    --cru-success-2-color: hsl(120 60% 68%);
+    --cru-success-on-color: hsl(120 60% 20%);
+    --cru-success-container-color: hsl(120 60% 30%);
+    --cru-success-container-1-color: hsl(120 60% 25%);
+    --cru-success-container-2-color: hsl(120 60% 20%);
+    --cru-success-on-container-color: hsl(120 60% 90%);
+    --cru-surface-dim-color: hsl(0 0% 6%);
+    --cru-surface-color: hsl(0 0% 6%);
+    --cru-surface-1-color: hsl(0 0% 25%);
+    --cru-surface-2-color: hsl(0 0% 40%);
+    --cru-surface-bright-color: hsl(0 0% 24%);
+    --cru-surface-container-lowest-color: hsl(0 0% 4%);
+    --cru-surface-container-low-color: hsl(0 0% 10%);
+    --cru-surface-container-color: hsl(0 0% 12%);
+    --cru-surface-container-high-color: hsl(0 0% 17%);
+    --cru-surface-container-highest-color: hsl(0 0% 22%);
+    --cru-surface-on-color: hsl(0 0% 90%);
+    --cru-surface-on-variant-color: hsl(0 0% 80%);
+    --cru-surface-outline-color: hsl(0 0% 60%);
+    --cru-surface-outline-variant-color: hsl(0 0% 30%);
+  }
+}
+
+.cru-primary {
+  --cru-key-color: var(--cru-primary-color);
+  --cru-key-1-color: var(--cru-primary-1-color);
+  --cru-key-2-color: var(--cru-primary-2-color);
+  --cru-key-on-color: var(--cru-primary-on-color);
+  --cru-key-container-color: var(--cru-primary-container-color);
+  --cru-key-container-1-color: var(--cru-primary-container-1-color);
+  --cru-key-container-2-color: var(--cru-primary-container-2-color);
+  --cru-key-on-container-color: var(--cru-primary-on-container-color);
+}
+
+.cru-secondary {
+  --cru-key-color: var(--cru-secondary-color);
+  --cru-key-1-color: var(--cru-secondary-1-color);
+  --cru-key-2-color: var(--cru-secondary-2-color);
+  --cru-key-on-color: var(--cru-secondary-on-color);
+  --cru-key-container-color: var(--cru-secondary-container-color);
+  --cru-key-container-1-color: var(--cru-secondary-container-1-color);
+  --cru-key-container-2-color: var(--cru-secondary-container-2-color);
+  --cru-key-on-container-color: var(--cru-secondary-on-container-color);
+}
+
+.cru-tertiary {
+  --cru-key-color: var(--cru-tertiary-color);
+  --cru-key-1-color: var(--cru-tertiary-1-color);
+  --cru-key-2-color: var(--cru-tertiary-2-color);
+  --cru-key-on-color: var(--cru-tertiary-on-color);
+  --cru-key-container-color: var(--cru-tertiary-container-color);
+  --cru-key-container-1-color: var(--cru-tertiary-container-1-color);
+  --cru-key-container-2-color: var(--cru-tertiary-container-2-color);
+  --cru-key-on-container-color: var(--cru-tertiary-on-container-color);
+}
+
+.cru-danger {
+  --cru-key-color: var(--cru-danger-color);
+  --cru-key-1-color: var(--cru-danger-1-color);
+  --cru-key-2-color: var(--cru-danger-2-color);
+  --cru-key-on-color: var(--cru-danger-on-color);
+  --cru-key-container-color: var(--cru-danger-container-color);
+  --cru-key-container-1-color: var(--cru-danger-container-1-color);
+  --cru-key-container-2-color: var(--cru-danger-container-2-color);
+  --cru-key-on-container-color: var(--cru-danger-on-container-color);
+}
+
+.cru-success {
+  --cru-key-color: var(--cru-success-color);
+  --cru-key-1-color: var(--cru-success-1-color);
+  --cru-key-2-color: var(--cru-success-2-color);
+  --cru-key-on-color: var(--cru-success-on-color);
+  --cru-key-container-color: var(--cru-success-container-color);
+  --cru-key-container-1-color: var(--cru-success-container-1-color);
+  --cru-key-container-2-color: var(--cru-success-container-2-color);
+  --cru-key-on-container-color: var(--cru-success-on-container-color);
+}
+
diff --git a/FrontEnd/src/components/theme.css b/FrontEnd/src/components/theme.css
new file mode 100644
index 00000000..6ceb369f
--- /dev/null
+++ b/FrontEnd/src/components/theme.css
@@ -0,0 +1,146 @@
+@import "./theme-color.css";
+
+:root {
+  --cru-default-font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
+  --cru-page-padding: 1em 2em;
+
+  --cru-border-radius: 4px;
+  --cru-card-border-radius: 4px;
+}
+
+/* theme colors */
+:root {
+  --cru-primary-color: hsl(210, 100%, 50%);
+  --cru-secondary-color: hsl(30, 100%, 50%);
+  --cru-create-color: hsl(120, 100%, 25%);
+  --cru-danger-color: hsl(0, 100%, 50%);
+}
+
+/* common colors */
+:root {
+  --cru-background-color: hsl(0, 0%, 100%);
+  --cru-container-background-color: hsl(0, 0%, 97%);
+  --cru-text-primary-color: hsl(0, 0%, 0%);
+  --cru-text-secondary-color: hsl(0, 0%, 38%);
+}
+
+@media (prefers-color-scheme: dark) {
+  :root {
+    --cru-background-color: hsl(0, 0%, 0%);
+    --cru-container-background-color: hsl(0, 0%, 2%);
+    --cru-text-primary-color: hsl(0, 0%, 100%);
+    --cru-text-secondary-color: hsl(0, 0%, 85%);
+  }
+}
+
+:root {
+  --cru-body-background-color: var(--cru-background-color);
+}
+
+/* clickable color */
+:root {
+  --cru-clickable-primary-normal-color: var(--cru-primary-color);
+  --cru-clickable-primary-hover-color: hsl(210, 100%, 60%);
+  --cru-clickable-primary-focus-color: hsl(210, 100%, 60%);
+  --cru-clickable-primary-active-color: hsl(210, 100%, 70%);
+  --cru-clickable-secondary-normal-color: var(--cru-secondary-color);
+  --cru-clickable-secondary-hover-color: hsl(30, 100%, 60%);
+  --cru-clickable-secondary-focus-color: hsl(30, 100%, 60%);
+  --cru-clickable-secondary-active-color: hsl(30, 100%, 70%);
+  --cru-clickable-create-normal-color: var(--cru-create-color);
+  --cru-clickable-create-hover-color: hsl(120, 100%, 35%);
+  --cru-clickable-create-focus-color: hsl(120, 100%, 35%);
+  --cru-clickable-create-active-color: hsl(120, 100%, 35%);
+  --cru-clickable-danger-normal-color: var(--cru-danger-color);
+  --cru-clickable-danger-hover-color: hsl(0, 100%, 60%);
+  --cru-clickable-danger-focus-color: hsl(0, 100%, 60%);
+  --cru-clickable-danger-active-color: hsl(0, 100%, 70%);
+  --cru-clickable-grayscale-normal-color: hsl(0, 0%, 100%);
+  --cru-clickable-grayscale-hover-color: hsl(0, 0%, 92%);
+  --cru-clickable-grayscale-focus-color: hsl(0, 0%, 92%);
+  --cru-clickable-grayscale-active-color: hsl(0, 0%, 88%);
+  --cru-clickable-disabled-color: hsl(0, 0%, 50%);
+}
+
+@media (prefers-color-scheme: dark) {
+  :root {
+    --cru-clickable-grayscale-normal-color: hsl(0, 0%, 0%);
+    --cru-clickable-grayscale-hover-color: hsl(0, 0%, 10%);
+    --cru-clickable-grayscale-focus-color: hsl(0, 0%, 10%);
+    --cru-clickable-grayscale-active-color: hsl(0, 0%, 20%);
+  }
+}
+
+.cru-clickable-primary {
+  --cru-clickable-normal-color: var(--cru-clickable-primary-normal-color);
+  --cru-clickable-hover-color: var(--cru-clickable-primary-hover-color);
+  --cru-clickable-focus-color: var(--cru-clickable-primary-focus-color);
+  --cru-clickable-active-color: var(--cru-clickable-primary-active-color);
+}
+
+.cru-clickable-secondary {
+  --cru-clickable-normal-color: var(--cru-clickable-secondary-normal-color);
+  --cru-clickable-hover-color: var(--cru-clickable-secondary-hover-color);
+  --cru-clickable-focus-color: var(--cru-clickable-secondary-focus-color);
+  --cru-clickable-active-color: var(--cru-clickable-secondary-active-color);
+}
+
+.cru-clickable-create {
+  --cru-clickable-normal-color: var(--cru-clickable-create-normal-color);
+  --cru-clickable-hover-color: var(--cru-clickable-create-hover-color);
+  --cru-clickable-focus-color: var(--cru-clickable-create-focus-color);
+  --cru-clickable-active-color: var(--cru-clickable-create-active-color);
+}
+
+.cru-clickable-danger {
+  --cru-clickable-normal-color: var(--cru-clickable-danger-normal-color);
+  --cru-clickable-hover-color: var(--cru-clickable-danger-hover-color);
+  --cru-clickable-focus-color: var(--cru-clickable-danger-focus-color);
+  --cru-clickable-active-color: var(--cru-clickable-danger-active-color);
+}
+
+.cru-clickable-grayscale {
+  --cru-clickable-normal-color: var(--cru-clickable-grayscale-normal-color);
+  --cru-clickable-hover-color: var(--cru-clickable-grayscale-hover-color);
+  --cru-clickable-focus-color: var(--cru-clickable-grayscale-focus-color);
+  --cru-clickable-active-color: var(--cru-clickable-grayscale-active-color);
+}
+
+/* button colors */
+:root {
+  /* push button colors */
+  --cru-push-button-text-color: #ffffff;
+  --cru-push-button-disabled-text-color: hsl(0, 0%, 80%);
+}
+
+/* Card colors */
+:root {
+  --cru-card-background-primary-color: hsl(210, 100%, 50%);
+  --cru-card-border-primary-color: hsl(210, 100%, 50%);
+  --cru-card-background-secondary-color: hsl(30, 100%, 50%);
+  --cru-card-border-secondary-color: hsl(30, 100%, 50%);
+  --cru-card-background-create-color: hsl(120, 100%, 25%);
+  --cru-card-border-create-color: hsl(120, 100%, 25%);
+  --cru-card-background-danger-color: hsl(0, 100%, 50%);
+  --cru-card-border-danger-color: hsl(0, 100%, 50%);
+}
+
+.cru-card-primary {
+  --cru-card-background-color: var(--cru-card-background-primary-color);
+  --cru-card-border-color: var(--cru-card-border-primary-color)
+}
+
+.cru-card-secondary {
+  --cru-card-background-color: var(--cru-card-background-secondary-color);
+  --cru-card-border-color: var(--cru-card-border-secondary-color)
+}
+
+.cru-card-create {
+  --cru-card-background-color: var(--cru-card-background-create-color);
+  --cru-card-border-color: var(--cru-card-border-create-color)
+}
+
+.cru-card-danger {
+  --cru-card-background-color: var(--cru-card-background-danger-color);
+  --cru-card-border-color: var(--cru-card-border-danger-color)
+}
\ No newline at end of file
diff --git a/FrontEnd/src/components/user/UserAvatar.tsx b/FrontEnd/src/components/user/UserAvatar.tsx
new file mode 100644
index 00000000..8671f2d8
--- /dev/null
+++ b/FrontEnd/src/components/user/UserAvatar.tsx
@@ -0,0 +1,22 @@
+import { Ref, ComponentPropsWithoutRef } from "react";
+
+import { getHttpUserClient } from "~src/http/user";
+
+export interface UserAvatarProps extends ComponentPropsWithoutRef<"img"> {
+  username: string;
+  imgRef?: Ref<HTMLImageElement> | null;
+}
+
+export default function UserAvatar({
+  username,
+  imgRef,
+  ...otherProps
+}: UserAvatarProps) {
+  return (
+    <img
+      ref={imgRef}
+      src={getHttpUserClient().generateAvatarUrl(username)}
+      {...otherProps}
+    />
+  );
+}
diff --git a/FrontEnd/src/http/bookmark.ts b/FrontEnd/src/http/bookmark.ts
index 40e121cc..311f9a0f 100644
--- a/FrontEnd/src/http/bookmark.ts
+++ b/FrontEnd/src/http/bookmark.ts
@@ -1,4 +1,4 @@
-import { withQuery } from "@/utilities/url";
+import { withQuery } from "~src/utilities/url";
 
 import { axios, apiBaseUrl, extractResponseData, Page } from "./common";
 
diff --git a/FrontEnd/src/http/timeline.ts b/FrontEnd/src/http/timeline.ts
index 401ae116..255c786e 100644
--- a/FrontEnd/src/http/timeline.ts
+++ b/FrontEnd/src/http/timeline.ts
@@ -1,4 +1,4 @@
-import { withQuery } from "@/utilities/url";
+import { withQuery } from "~src/utilities/url";
 
 import {
   axios,
diff --git a/FrontEnd/src/migrating/center/CenterBoards.tsx b/FrontEnd/src/migrating/center/CenterBoards.tsx
index a8be2c29..f1c3fc6a 100644
--- a/FrontEnd/src/migrating/center/CenterBoards.tsx
+++ b/FrontEnd/src/migrating/center/CenterBoards.tsx
@@ -1,13 +1,13 @@
 import * as React from "react";
 import { useTranslation } from "react-i18next";
 
-import { highlightTimelineUsername } from "@/common";
+import { highlightTimelineUsername } from "~src/common";
 
-import { pushAlert } from "@/services/alert";
-import { useUserLoggedIn } from "@/services/user";
+import { pushAlert } from "~src/services/alert";
+import { useUserLoggedIn } from "~src/services/user";
 
-import { getHttpTimelineClient } from "@/http/timeline";
-import { getHttpBookmarkClient } from "@/http/bookmark";
+import { getHttpTimelineClient } from "~src/http/timeline";
+import { getHttpBookmarkClient } from "~src/http/bookmark";
 
 import TimelineBoard from "./TimelineBoard";
 
diff --git a/FrontEnd/src/migrating/center/TimelineBoard.tsx b/FrontEnd/src/migrating/center/TimelineBoard.tsx
index b3ccdf8c..8f4401bc 100644
--- a/FrontEnd/src/migrating/center/TimelineBoard.tsx
+++ b/FrontEnd/src/migrating/center/TimelineBoard.tsx
@@ -2,7 +2,7 @@ import * as React from "react";
 import classnames from "classnames";
 import { Link } from "react-router-dom";
 
-import { TimelineBookmark } from "@/http/bookmark";
+import { TimelineBookmark } from "~src/http/bookmark";
 
 import TimelineLogo from "../common/TimelineLogo";
 import LoadFailReload from "../common/LoadFailReload";
diff --git a/FrontEnd/src/migrating/center/TimelineCreateDialog.tsx b/FrontEnd/src/migrating/center/TimelineCreateDialog.tsx
index 63742936..340a08fe 100644
--- a/FrontEnd/src/migrating/center/TimelineCreateDialog.tsx
+++ b/FrontEnd/src/migrating/center/TimelineCreateDialog.tsx
@@ -1,11 +1,11 @@
 import * as React from "react";
 import { useNavigate } from "react-router-dom";
 
-import { validateTimelineName } from "@/services/timeline";
-import { getHttpTimelineClient, HttpTimelineInfo } from "@/http/timeline";
+import { validateTimelineName } from "~src/services/timeline";
+import { getHttpTimelineClient, HttpTimelineInfo } from "~src/http/timeline";
 
 import OperationDialog from "../common/dialog/OperationDialog";
-import { useUserLoggedIn } from "@/services/user";
+import { useUserLoggedIn } from "~src/services/user";
 
 interface TimelineCreateDialogProps {
   open: boolean;
diff --git a/FrontEnd/src/migrating/center/index.tsx b/FrontEnd/src/migrating/center/index.tsx
index 77af2c20..11502517 100644
--- a/FrontEnd/src/migrating/center/index.tsx
+++ b/FrontEnd/src/migrating/center/index.tsx
@@ -1,7 +1,7 @@
 import * as React from "react";
 import { useNavigate } from "react-router-dom";
 
-import { useUserLoggedIn } from "@/services/user";
+import { useUserLoggedIn } from "~src/services/user";
 
 import SearchInput from "../common/SearchInput";
 import Button from "../common/button/Button";
diff --git a/FrontEnd/src/pages/about/index.tsx b/FrontEnd/src/pages/about/index.tsx
index acec1735..bce64322 100644
--- a/FrontEnd/src/pages/about/index.tsx
+++ b/FrontEnd/src/pages/about/index.tsx
@@ -1,7 +1,7 @@
 import "./index.css";
 
-import { useC } from "@/common";
-import Page from "@/views/common/Page";
+import { useC } from "~src/common";
+import Page from "~src/components/Page";
 
 interface Credit {
   name: string;
diff --git a/FrontEnd/src/pages/loading/index.tsx b/FrontEnd/src/pages/loading/index.tsx
index e4c8edab..29d27adc 100644
--- a/FrontEnd/src/pages/loading/index.tsx
+++ b/FrontEnd/src/pages/loading/index.tsx
@@ -1,4 +1,4 @@
-import Spinner from "@/views/common/Spinner";
+import Spinner from "~src/components/Spinner";
 
 import "./index.css";
 
diff --git a/FrontEnd/src/pages/login/index.tsx b/FrontEnd/src/pages/login/index.tsx
index a09e32c3..582ebd0f 100644
--- a/FrontEnd/src/pages/login/index.tsx
+++ b/FrontEnd/src/pages/login/index.tsx
@@ -2,16 +2,16 @@ import { useState, useEffect } from "react";
 import { Link, useNavigate } from "react-router-dom";
 import { Trans } from "react-i18next";
 
-import { useUser, userService } from "@/services/user";
+import { useUser, userService } from "~src/services/user";
 
-import { useC } from "@/views/common/common";
-import LoadingButton from "@/views/common/button/LoadingButton";
+import { useC } from "~src/components/common";
+import LoadingButton from "~src/components/button/LoadingButton";
 import {
   InputErrorDict,
   InputGroup,
   useInputs,
-} from "@/views/common/input/InputGroup";
-import Page from "@/views/common/Page";
+} from "~src/components/input/InputGroup";
+import Page from "~src/components/Page";
 
 import "./index.css";
 
diff --git a/FrontEnd/src/pages/register/index.tsx b/FrontEnd/src/pages/register/index.tsx
index bc474adb..9e478612 100644
--- a/FrontEnd/src/pages/register/index.tsx
+++ b/FrontEnd/src/pages/register/index.tsx
@@ -2,16 +2,16 @@ import { useState, useEffect } from "react";
 import { useTranslation } from "react-i18next";
 import { useNavigate } from "react-router-dom";
 
-import { HttpBadRequestError } from "@/http/common";
-import { getHttpTokenClient } from "@/http/token";
-import { userService, useUser } from "@/services/user";
+import { HttpBadRequestError } from "~src/http/common";
+import { getHttpTokenClient } from "~src/http/token";
+import { userService, useUser } from "~src/services/user";
 
-import { LoadingButton } from "@/views/common/button";
+import { LoadingButton } from "~src/components/button";
 import {
   useInputs,
   InputErrorDict,
   InputGroup,
-} from "@/views/common/input/InputGroup";
+} from "~src/components/input/InputGroup";
 
 import "./index.css";
 
diff --git a/FrontEnd/src/pages/setting/ChangeAvatarDialog.tsx b/FrontEnd/src/pages/setting/ChangeAvatarDialog.tsx
index f35fc5a7..c34bcf4f 100644
--- a/FrontEnd/src/pages/setting/ChangeAvatarDialog.tsx
+++ b/FrontEnd/src/pages/setting/ChangeAvatarDialog.tsx
@@ -1,19 +1,19 @@
 import { useState, ChangeEvent, ComponentPropsWithoutRef } from "react";
 
-import { useC, Text, UiLogicError } from "@/common";
+import { useC, Text, UiLogicError } from "~src/common";
 
-import { useUser } from "@/services/user";
+import { useUser } from "~src/services/user";
 
-import { getHttpUserClient } from "@/http/user";
+import { getHttpUserClient } from "~src/http/user";
 
 import ImageCropper, {
   Clip,
   applyClipToImage,
-} from "@/views/common/ImageCropper";
-import BlobImage from "@/views/common/BlobImage";
-import ButtonRowV2 from "@/views/common/button/ButtonRowV2";
-import Dialog from "@/views/common/dialog/Dialog";
-import DialogContainer from "@/views/common/dialog/DialogContainer";
+} from "~src/components/ImageCropper";
+import BlobImage from "~src/components/BlobImage";
+import ButtonRowV2 from "~src/components/button/ButtonRowV2";
+import Dialog from "~src/components/dialog/Dialog";
+import DialogContainer from "~src/components/dialog/DialogContainer";
 
 import "./ChangeAvatarDialog.css";
 
diff --git a/FrontEnd/src/pages/setting/ChangeNicknameDialog.tsx b/FrontEnd/src/pages/setting/ChangeNicknameDialog.tsx
index 4d318543..843659ef 100644
--- a/FrontEnd/src/pages/setting/ChangeNicknameDialog.tsx
+++ b/FrontEnd/src/pages/setting/ChangeNicknameDialog.tsx
@@ -1,7 +1,7 @@
-import { getHttpUserClient } from "@/http/user";
-import { useUserLoggedIn } from "@/services/user";
+import { getHttpUserClient } from "~src/http/user";
+import { useUserLoggedIn } from "~src/services/user";
 
-import OperationDialog from "@/views/common/dialog/OperationDialog";
+import OperationDialog from "~src/components/dialog/OperationDialog";
 
 export interface ChangeNicknameDialogProps {
   open: boolean;
@@ -26,7 +26,7 @@ export default function ChangeNicknameDialog(props: ChangeNicknameDialogProps) {
       ]}
       onProcess={({ newNickname }) => {
         return getHttpUserClient().patch(user.username, {
-          nickname: newNickname as string,
+          nickname: newNickname,
         });
       }}
       onClose={onClose}
diff --git a/FrontEnd/src/pages/setting/ChangePasswordDialog.tsx b/FrontEnd/src/pages/setting/ChangePasswordDialog.tsx
index 87a970a5..bfcea92d 100644
--- a/FrontEnd/src/pages/setting/ChangePasswordDialog.tsx
+++ b/FrontEnd/src/pages/setting/ChangePasswordDialog.tsx
@@ -1,11 +1,11 @@
 import { useState } from "react";
 import { useNavigate } from "react-router-dom";
 
-import { userService } from "@/services/user";
+import { userService } from "~src/services/user";
 
 import OperationDialog, {
   InputErrorDict,
-} from "@/views/common/dialog/OperationDialog";
+} from "~src/components/dialog/OperationDialog";
 
 interface ChangePasswordDialogProps {
   open: boolean;
@@ -65,10 +65,7 @@ export function ChangePasswordDialog(props: ChangePasswordDialogProps) {
         },
       }}
       onProcess={async ({ oldPassword, newPassword }) => {
-        await userService.changePassword(
-          oldPassword as string,
-          newPassword as string,
-        );
+        await userService.changePassword(oldPassword, newPassword);
         setRedirect(true);
       }}
       onSuccessAndClose={() => {
diff --git a/FrontEnd/src/pages/setting/index.tsx b/FrontEnd/src/pages/setting/index.tsx
index 50967a3c..67416a08 100644
--- a/FrontEnd/src/pages/setting/index.tsx
+++ b/FrontEnd/src/pages/setting/index.tsx
@@ -8,21 +8,21 @@ import { useTranslation } from "react-i18next";
 import { useNavigate } from "react-router-dom";
 import classNames from "classnames";
 
-import { useC, Text } from "@/common";
-import { useUser, userService } from "@/services/user";
-import { getHttpUserClient } from "@/http/user";
+import { useC, Text } from "~src/common";
+import { useUser, userService } from "~src/services/user";
+import { getHttpUserClient } from "~src/http/user";
 
-import { useDialog } from "@/views/common/dialog";
-import ConfirmDialog from "@/views/common/dialog/ConfirmDialog";
-import Card from "@/views/common/Card";
-import Spinner from "@/views/common/Spinner";
-import Page from "@/views/common/Page";
+import { useDialog } from "~src/components/dialog";
+import ConfirmDialog from "~src/components/dialog/ConfirmDialog";
+import Card from "~src/components/Card";
+import Spinner from "~src/components/Spinner";
+import Page from "~src/components/Page";
 import ChangePasswordDialog from "./ChangePasswordDialog";
 import ChangeAvatarDialog from "./ChangeAvatarDialog";
 import ChangeNicknameDialog from "./ChangeNicknameDialog";
 
 import "./index.css";
-import { pushAlert } from "@/services/alert";
+import { pushAlert } from "~src/services/alert";
 
 interface SettingSectionProps
   extends Omit<ComponentPropsWithoutRef<typeof Card>, "title"> {
diff --git a/FrontEnd/src/pages/timeline/CollapseButton.tsx b/FrontEnd/src/pages/timeline/CollapseButton.tsx
index 14fc6bee..1c4fa2ba 100644
--- a/FrontEnd/src/pages/timeline/CollapseButton.tsx
+++ b/FrontEnd/src/pages/timeline/CollapseButton.tsx
@@ -1,6 +1,6 @@
 import { CSSProperties } from "react";
 
-import IconButton from "@/views/common/button/IconButton";
+import IconButton from "~src/components/button/IconButton";
 
 export default function CollapseButton({
   collapse,
diff --git a/FrontEnd/src/pages/timeline/MarkdownPostEdit.tsx b/FrontEnd/src/pages/timeline/MarkdownPostEdit.tsx
index 9c497108..43e81d67 100644
--- a/FrontEnd/src/pages/timeline/MarkdownPostEdit.tsx
+++ b/FrontEnd/src/pages/timeline/MarkdownPostEdit.tsx
@@ -2,15 +2,15 @@ import * as React from "react";
 import classnames from "classnames";
 import { useTranslation } from "react-i18next";
 
-import { getHttpTimelineClient, HttpTimelinePostInfo } from "@/http/timeline";
+import { getHttpTimelineClient, HttpTimelinePostInfo } from "~src/http/timeline";
 
-import TimelinePostBuilder from "@/services/TimelinePostBuilder";
+import TimelinePostBuilder from "~src/services/TimelinePostBuilder";
 
-import FlatButton from "@/views/common/button/FlatButton";
-import TabPages from "@/views/common/tab/TabPages";
-import ConfirmDialog from "@/views/common/dialog/ConfirmDialog";
-import Spinner from "@/views/common/Spinner";
-import IconButton from "@/views/common/button/IconButton";
+import FlatButton from "~src/components/button/FlatButton";
+import TabPages from "~src/components/tab/TabPages";
+import ConfirmDialog from "~src/components/dialog/ConfirmDialog";
+import Spinner from "~src/components/Spinner";
+import IconButton from "~src/components/button/IconButton";
 
 import "./MarkdownPostEdit.css";
 
diff --git a/FrontEnd/src/pages/timeline/Timeline.tsx b/FrontEnd/src/pages/timeline/Timeline.tsx
index 73e621c1..f266ec9d 100644
--- a/FrontEnd/src/pages/timeline/Timeline.tsx
+++ b/FrontEnd/src/pages/timeline/Timeline.tsx
@@ -1,20 +1,20 @@
 import { useState, useEffect } from "react";
 import classnames from "classnames";
-import { useScrollToBottom } from "@/utilities/hooks";
+import { useScrollToBottom } from "~src/utilities/hooks";
 import { HubConnectionState } from "@microsoft/signalr";
 
 import {
   HttpForbiddenError,
   HttpNetworkError,
   HttpNotFoundError,
-} from "@/http/common";
+} from "~src/http/common";
 import {
   getHttpTimelineClient,
   HttpTimelineInfo,
   HttpTimelinePostInfo,
-} from "@/http/timeline";
+} from "~src/http/timeline";
 
-import { getTimelinePostUpdate$ } from "@/services/timeline";
+import { getTimelinePostUpdate$ } from "~src/services/timeline";
 
 import TimelinePostList from "./TimelinePostList";
 import TimelinePostEdit from "./TimelinePostCreateView";
diff --git a/FrontEnd/src/pages/timeline/TimelineCard.tsx b/FrontEnd/src/pages/timeline/TimelineCard.tsx
index 2987aa74..82d6d350 100644
--- a/FrontEnd/src/pages/timeline/TimelineCard.tsx
+++ b/FrontEnd/src/pages/timeline/TimelineCard.tsx
@@ -1,24 +1,24 @@
 import { useState } from "react";
 import { HubConnectionState } from "@microsoft/signalr";
 
-import { useUser } from "@/services/user";
-import { pushAlert } from "@/services/alert";
+import { useUser } from "~src/services/user";
+import { pushAlert } from "~src/services/alert";
 
-import { HttpTimelineInfo } from "@/http/timeline";
-import { getHttpBookmarkClient } from "@/http/bookmark";
+import { HttpTimelineInfo } from "~src/http/timeline";
+import { getHttpBookmarkClient } from "~src/http/bookmark";
 
-import { useMobile } from "@/views/common/common";
-import { Dialog, useDialog } from "@/views/common/dialog";
-import UserAvatar from "@/views/common/user/UserAvatar";
-import PopupMenu from "@/views/common/menu/PopupMenu";
-import FullPageDialog from "@/views/common/dialog/FullPageDialog";
-import Card from "@/views/common/Card";
+import { useMobile } from "~src/components/common";
+import { Dialog, useDialog } from "~src/components/dialog";
+import UserAvatar from "~src/components/user/UserAvatar";
+import PopupMenu from "~src/components/menu/PopupMenu";
+import FullPageDialog from "~src/components/dialog/FullPageDialog";
+import Card from "~src/components/Card";
 import TimelineDeleteDialog from "./TimelineDeleteDialog";
 import ConnectionStatusBadge from "./ConnectionStatusBadge";
 import CollapseButton from "./CollapseButton";
 import TimelineMember from "./TimelineMember";
 import TimelinePropertyChangeDialog from "./TimelinePropertyChangeDialog";
-import IconButton from "@/views/common/button/IconButton";
+import IconButton from "~src/components/button/IconButton";
 
 import "./TimelineCard.css";
 
diff --git a/FrontEnd/src/pages/timeline/TimelineDeleteDialog.tsx b/FrontEnd/src/pages/timeline/TimelineDeleteDialog.tsx
index 7d7b9527..7b7b8e8c 100644
--- a/FrontEnd/src/pages/timeline/TimelineDeleteDialog.tsx
+++ b/FrontEnd/src/pages/timeline/TimelineDeleteDialog.tsx
@@ -2,9 +2,9 @@ import * as React from "react";
 import { useNavigate } from "react-router-dom";
 import { Trans } from "react-i18next";
 
-import { getHttpTimelineClient, HttpTimelineInfo } from "@/http/timeline";
+import { getHttpTimelineClient, HttpTimelineInfo } from "~src/http/timeline";
 
-import OperationDialog from "@/views/common/dialog/OperationDialog";
+import OperationDialog from "~src/components/dialog/OperationDialog";
 
 interface TimelineDeleteDialog {
   timeline: HttpTimelineInfo;
diff --git a/FrontEnd/src/pages/timeline/TimelineMember.tsx b/FrontEnd/src/pages/timeline/TimelineMember.tsx
index 4c1600f5..a25fe6a9 100644
--- a/FrontEnd/src/pages/timeline/TimelineMember.tsx
+++ b/FrontEnd/src/pages/timeline/TimelineMember.tsx
@@ -1,16 +1,16 @@
 import { useState } from "react";
 import { useTranslation } from "react-i18next";
 
-import { convertI18nText, I18nText } from "@/common";
+import { convertI18nText, I18nText } from "~src/common";
 
-import { HttpUser } from "@/http/user";
-import { getHttpSearchClient } from "@/http/search";
-import { getHttpTimelineClient, HttpTimelineInfo } from "@/http/timeline";
+import { HttpUser } from "~src/http/user";
+import { getHttpSearchClient } from "~src/http/search";
+import { getHttpTimelineClient, HttpTimelineInfo } from "~src/http/timeline";
 
-import SearchInput from "@/views/common/SearchInput";
-import UserAvatar from "@/views/common/user/UserAvatar";
-import Button from "@/views/common/button/Button";
-import { ListContainer, ListItemContainer } from "@/views/common/list";
+import SearchInput from "~src/components/SearchInput";
+import UserAvatar from "~src/components/user/UserAvatar";
+import Button from "~src/components/button/Button";
+import { ListContainer, ListItemContainer } from "~src/components/list";
 
 import "./TimelineMember.css";
 
diff --git a/FrontEnd/src/pages/timeline/TimelinePostCard.tsx b/FrontEnd/src/pages/timeline/TimelinePostCard.tsx
index 23dd141f..d3fd3215 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostCard.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostCard.tsx
@@ -1,7 +1,7 @@
 import { ReactNode } from "react";
 import classNames from "classnames";
 
-import Card from "@/views/common/Card";
+import Card from "~src/components/Card";
 
 import "./TimelinePostCard.css";
 
diff --git a/FrontEnd/src/pages/timeline/TimelinePostContentView.tsx b/FrontEnd/src/pages/timeline/TimelinePostContentView.tsx
index ad5465c1..6c0d7387 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostContentView.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostContentView.tsx
@@ -2,15 +2,15 @@ import * as React from "react";
 import classnames from "classnames";
 import { marked } from "marked";
 
-import { UiLogicError } from "@/common";
+import { UiLogicError } from "~src/common";
 
-import { HttpNetworkError } from "@/http/common";
-import { getHttpTimelineClient, HttpTimelinePostInfo } from "@/http/timeline";
+import { HttpNetworkError } from "~src/http/common";
+import { getHttpTimelineClient, HttpTimelinePostInfo } from "~src/http/timeline";
 
-import { useUser } from "@/services/user";
+import { useUser } from "~src/services/user";
 
-import Skeleton from "@/views/common/Skeleton";
-import LoadFailReload from "@/views/common/LoadFailReload";
+import Skeleton from "~src/components/Skeleton";
+import LoadFailReload from "~src/components/LoadFailReload";
 
 const TextView: React.FC<TimelinePostContentViewProps> = (props) => {
   const { post, className, style } = props;
diff --git a/FrontEnd/src/pages/timeline/TimelinePostCreateView.tsx b/FrontEnd/src/pages/timeline/TimelinePostCreateView.tsx
index 572a9119..3c41228a 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostCreateView.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostCreateView.tsx
@@ -1,26 +1,26 @@
 import { useState, useEffect, ChangeEventHandler } from "react";
 import { useTranslation } from "react-i18next";
 
-import { UiLogicError } from "@/common";
+import { UiLogicError } from "~src/common";
 
 import {
   getHttpTimelineClient,
   HttpTimelineInfo,
   HttpTimelinePostInfo,
   HttpTimelinePostPostRequestData,
-} from "@/http/timeline";
+} from "~src/http/timeline";
 
-import { pushAlert } from "@/services/alert";
+import { pushAlert } from "~src/services/alert";
 
-import base64 from "@/utilities/base64";
+import base64 from "~src/utilities/base64";
 
-import BlobImage from "@/views/common/BlobImage";
-import LoadingButton from "@/views/common/button/LoadingButton";
-import PopupMenu from "@/views/common/menu/PopupMenu";
+import BlobImage from "~src/components/BlobImage";
+import LoadingButton from "~src/components/button/LoadingButton";
+import PopupMenu from "~src/components/menu/PopupMenu";
 import MarkdownPostEdit from "./MarkdownPostEdit";
 import TimelinePostCard from "./TimelinePostCard";
 import TimelinePostContainer from "./TimelinePostContainer";
-import IconButton from "@/views/common/button/IconButton";
+import IconButton from "~src/components/button/IconButton";
 
 import "./TimelinePostCreateView.css";
 import classNames from "classnames";
diff --git a/FrontEnd/src/pages/timeline/TimelinePostList.tsx b/FrontEnd/src/pages/timeline/TimelinePostList.tsx
index a3501b33..7912260a 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostList.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostList.tsx
@@ -1,6 +1,6 @@
 import { useMemo, Fragment } from "react";
 
-import { HttpTimelinePostInfo } from "@/http/timeline";
+import { HttpTimelinePostInfo } from "~src/http/timeline";
 
 import TimelinePostView from "./TimelinePostView";
 import TimelineDateLabel from "./TimelineDateLabel";
diff --git a/FrontEnd/src/pages/timeline/TimelinePostView.tsx b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
index afae5033..2a8c5947 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostView.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
@@ -1,17 +1,17 @@
 import { useState } from "react";
 
-import { getHttpTimelineClient, HttpTimelinePostInfo } from "@/http/timeline";
+import { getHttpTimelineClient, HttpTimelinePostInfo } from "~src/http/timeline";
 
-import { pushAlert } from "@/services/alert";
+import { pushAlert } from "~src/services/alert";
 
-import { useClickOutside } from "@/utilities/hooks";
+import { useClickOutside } from "~src/utilities/hooks";
 
-import UserAvatar from "@/views/common/user/UserAvatar";
-import { useDialog } from "@/views/common/dialog";
-import FlatButton from "@/views/common/button/FlatButton";
-import ConfirmDialog from "@/views/common/dialog/ConfirmDialog";
+import UserAvatar from "~src/components/user/UserAvatar";
+import { useDialog } from "~src/components/dialog";
+import FlatButton from "~src/components/button/FlatButton";
+import ConfirmDialog from "~src/components/dialog/ConfirmDialog";
 import TimelinePostContentView from "./TimelinePostContentView";
-import IconButton from "@/views/common/button/IconButton";
+import IconButton from "~src/components/button/IconButton";
 
 import TimelinePostContainer from "./TimelinePostContainer";
 import TimelinePostCard from "./TimelinePostCard";
diff --git a/FrontEnd/src/pages/timeline/TimelinePropertyChangeDialog.tsx b/FrontEnd/src/pages/timeline/TimelinePropertyChangeDialog.tsx
index b57135bb..afd83a5f 100644
--- a/FrontEnd/src/pages/timeline/TimelinePropertyChangeDialog.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePropertyChangeDialog.tsx
@@ -6,9 +6,9 @@ import {
   HttpTimelinePatchRequest,
   kTimelineVisibilities,
   TimelineVisibility,
-} from "@/http/timeline";
+} from "~src/http/timeline";
 
-import OperationDialog from "@/views/common/dialog/OperationDialog";
+import OperationDialog from "~src/components/dialog/OperationDialog";
 
 export interface TimelinePropertyChangeDialogProps {
   open: boolean;
@@ -68,13 +68,13 @@ const TimelinePropertyChangeDialog: React.FC<
       onProcess={({ title, visibility, description }) => {
         const req: HttpTimelinePatchRequest = {};
         if (title !== timeline.title) {
-          req.title = title as string;
+          req.title = title;
         }
         if (visibility !== timeline.visibility) {
-          req.visibility = visibility as TimelineVisibility;
+          req.visibility = visibility;
         }
         if (description !== timeline.description) {
-          req.description = description as string;
+          req.description = description;
         }
         return getHttpTimelineClient()
           .patchTimeline(timeline.owner.username, timeline.nameV2, req)
diff --git a/FrontEnd/src/pages/timeline/index.tsx b/FrontEnd/src/pages/timeline/index.tsx
index 51cc37f0..6cd1ded0 100644
--- a/FrontEnd/src/pages/timeline/index.tsx
+++ b/FrontEnd/src/pages/timeline/index.tsx
@@ -1,6 +1,6 @@
 import { useParams } from "react-router-dom";
 
-import { UiLogicError } from "@/common";
+import { UiLogicError } from "~src/common";
 
 import Timeline from "./Timeline";
 
diff --git a/FrontEnd/src/services/TimelinePostBuilder.ts b/FrontEnd/src/services/TimelinePostBuilder.ts
index 0440e136..919d4f55 100644
--- a/FrontEnd/src/services/TimelinePostBuilder.ts
+++ b/FrontEnd/src/services/TimelinePostBuilder.ts
@@ -1,10 +1,10 @@
 import { marked } from "marked";
 
-import { UiLogicError } from "@/common";
+import { UiLogicError } from "~src/common";
 
-import base64 from "@/utilities/base64";
+import base64 from "~src/utilities/base64";
 
-import { HttpTimelinePostPostRequest } from "@/http/timeline";
+import { HttpTimelinePostPostRequest } from "~src/http/timeline";
 
 class TimelinePostMarkedRenderer extends marked.Renderer {
   constructor(private _images: { file: File; url: string }[]) {
diff --git a/FrontEnd/src/services/alert.ts b/FrontEnd/src/services/alert.ts
index 2f66dccc..241deab1 100644
--- a/FrontEnd/src/services/alert.ts
+++ b/FrontEnd/src/services/alert.ts
@@ -1,7 +1,7 @@
 import pull from "lodash/pull";
 
-import { I18nText } from "@/common";
-import { ThemeColor } from "@/views/common/common";
+import { I18nText } from "~src/common";
+import { ThemeColor } from "~src/views/common/common";
 
 export interface AlertInfo {
   type?: ThemeColor;
diff --git a/FrontEnd/src/services/timeline.ts b/FrontEnd/src/services/timeline.ts
index 342f803a..41a7bff0 100644
--- a/FrontEnd/src/services/timeline.ts
+++ b/FrontEnd/src/services/timeline.ts
@@ -13,8 +13,8 @@ import {
   HubConnectionState,
 } from "@microsoft/signalr";
 
-import { TimelineVisibility } from "@/http/timeline";
-import { token$ } from "@/http/common";
+import { TimelineVisibility } from "~src/http/timeline";
+import { token$ } from "~src/http/common";
 
 // cSpell:ignore onreconnected onreconnecting
 
diff --git a/FrontEnd/src/services/user.ts b/FrontEnd/src/services/user.ts
index c89ca893..ddba4dab 100644
--- a/FrontEnd/src/services/user.ts
+++ b/FrontEnd/src/services/user.ts
@@ -2,11 +2,11 @@ import { useState, useEffect } from "react";
 import { BehaviorSubject, Observable } from "rxjs";
 import { AxiosError } from "axios";
 
-import { UiLogicError } from "@/common";
+import { UiLogicError } from "~src/common";
 
-import { setHttpToken, axios, HttpBadRequestError } from "@/http/common";
-import { getHttpTokenClient } from "@/http/token";
-import { getHttpUserClient, HttpUser, UserPermission } from "@/http/user";
+import { setHttpToken, axios, HttpBadRequestError } from "~src/http/common";
+import { getHttpTokenClient } from "~src/http/token";
+import { getHttpUserClient, HttpUser, UserPermission } from "~src/http/user";
 
 import { pushAlert } from "./alert";
 
diff --git a/FrontEnd/src/views/common/AppBar.css b/FrontEnd/src/views/common/AppBar.css
deleted file mode 100644
index a0d975b5..00000000
--- a/FrontEnd/src/views/common/AppBar.css
+++ /dev/null
@@ -1,87 +0,0 @@
-.app-bar {
-  height: 56px;
-  position: fixed;
-  z-index: 1030;
-  top: 0;
-  left: 0;
-  right: 0;
-  background-color: var(--cru-primary-color);
-}
-
-.app-bar {
-  display: flex;
-}
-
-.app-bar .app-bar-brand {
-  display: flex;
-  align-items: center;
-}
-
-.app-bar .app-bar-brand-icon {
-  height: 2em;
-}
-
-.app-bar .app-bar-user-area {
-  display: flex;
-  margin-left: auto;
-}
-
-.app-bar a {
-  background-color: var(--cru-primary-color);
-  color: var(--cru-push-button-text-color);
-  text-decoration: none;
-  display: flex;
-  align-items: center;
-  padding: 0 1em;
-  transition: all 0.5s;
-}
-
-.app-bar a:hover {
-  background-color: var(--cru-clickable-primary-hover-color);
-}
-
-.app-bar a:focus {
-  background-color: var(--cru-clickable-primary-focus-color);
-}
-
-.app-bar a:active {
-  background-color: var(--cru-clickable-primary-active-color);
-}
-
-/* the current page */
-.app-bar a.active {
-  background-color: var(--cru-clickable-primary-focus-color);
-}
-
-.app-bar .app-bar-avatar img {
-  width: 45px;
-  height: 45px;
-  background-color: white;
-  border-radius: 50%;
-}
-
-.app-bar.desktop .app-bar-link-area {
-  display: flex;
-}
-
-.app-bar.mobile .app-bar-link-area {
-  position: absolute;
-  z-index: -1;
-  top: 56px;
-  left: 0;
-  right: 0;
-  transition: transform 0.5s;
-}
-
-.app-bar.mobile a {
-  height: 56px;
-}
-
-.app-bar.mobile.collapse .app-bar-link-area {
-  transform: translateY(-100%);
-}
-
-.app-bar .toggler {
-  font-size: 2em;
-  margin-right: 0.5em;
-}
\ No newline at end of file
diff --git a/FrontEnd/src/views/common/AppBar.tsx b/FrontEnd/src/views/common/AppBar.tsx
deleted file mode 100644
index b9ea825b..00000000
--- a/FrontEnd/src/views/common/AppBar.tsx
+++ /dev/null
@@ -1,98 +0,0 @@
-import { useState } from "react";
-import classnames from "classnames";
-import { Link, NavLink } from "react-router-dom";
-
-import { I18nText, useC, useMobile } from "./common";
-import { useUser } from "@/services/user";
-
-import TimelineLogo from "./TimelineLogo";
-import { IconButton } from "./button";
-import UserAvatar from "./user/UserAvatar";
-
-import "./AppBar.css";
-
-function AppBarNavLink({
-  link,
-  className,
-  label,
-  onClick,
-  children,
-}: {
-  link: string;
-  className?: string;
-  label?: I18nText;
-  onClick?: () => void;
-  children?: React.ReactNode;
-}) {
-  if (label != null && children != null) {
-    throw new Error("AppBarNavLink: label and children cannot be both set");
-  }
-
-  const c = useC();
-
-  return (
-    <NavLink
-      to={link}
-      className={({ isActive }) => classnames(className, isActive && "active")}
-      onClick={onClick}
-    >
-      {children != null ? children : c(label)}
-    </NavLink>
-  );
-}
-
-export default function AppBar() {
-  const isMobile = useMobile();
-
-  const [isCollapse, setIsCollapse] = useState<boolean>(true);
-  const collapse = isMobile ? () => setIsCollapse(true) : undefined;
-  const toggleCollapse = () => setIsCollapse(!isCollapse);
-
-  const user = useUser();
-  const hasAdministrationPermission = user && user.hasAdministrationPermission;
-
-  return (
-    <nav
-      className={classnames(
-        isMobile ? "mobile" : "desktop",
-        "app-bar",
-        isCollapse && "collapse",
-      )}
-    >
-      <Link to="/" className="app-bar-brand" onClick={collapse}>
-        <TimelineLogo className="app-bar-brand-icon" />
-        Timeline
-      </Link>
-
-      <div className="app-bar-link-area">
-        <AppBarNavLink
-          link="/settings"
-          label="nav.settings"
-          onClick={collapse}
-        />
-        <AppBarNavLink link="/about" label="nav.about" onClick={collapse} />
-        {hasAdministrationPermission && (
-          <AppBarNavLink
-            link="/admin"
-            label="nav.administration"
-            onClick={collapse}
-          />
-        )}
-      </div>
-
-      <div className="app-bar-user-area">
-        {user != null ? (
-          <AppBarNavLink link="/" className="app-bar-avatar" onClick={collapse}>
-            <UserAvatar username={user.username} />
-          </AppBarNavLink>
-        ) : (
-          <AppBarNavLink link="/login" label="nav.login" onClick={collapse} />
-        )}
-      </div>
-
-      {isMobile && (
-        <IconButton icon="list" className="toggler" onClick={toggleCollapse} />
-      )}
-    </nav>
-  );
-}
diff --git a/FrontEnd/src/views/common/BlobImage.tsx b/FrontEnd/src/views/common/BlobImage.tsx
deleted file mode 100644
index 259c2210..00000000
--- a/FrontEnd/src/views/common/BlobImage.tsx
+++ /dev/null
@@ -1,26 +0,0 @@
-import { ComponentPropsWithoutRef, useState, useEffect } from "react";
-
-type BlobImageProps = Omit<ComponentPropsWithoutRef<"img">, "src"> & {
-  imgRef?: React.Ref<HTMLImageElement>;
-  src?: Blob | string | null;
-};
-
-export default function BlobImage(props: BlobImageProps) {
-  const { imgRef, src, ...otherProps } = props;
-
-  const [url, setUrl] = useState<string | null | undefined>(undefined);
-
-  useEffect(() => {
-    if (src instanceof Blob) {
-      const url = URL.createObjectURL(src);
-      setUrl(url);
-      return () => {
-        URL.revokeObjectURL(url);
-      };
-    } else {
-      setUrl(src);
-    }
-  }, [src]);
-
-  return <img ref={imgRef} {...otherProps} src={url ?? undefined} />;
-}
diff --git a/FrontEnd/src/views/common/Card.css b/FrontEnd/src/views/common/Card.css
deleted file mode 100644
index 6d655eb9..00000000
--- a/FrontEnd/src/views/common/Card.css
+++ /dev/null
@@ -1,20 +0,0 @@
-.cru-card {
-  border-radius: var(--cru-card-border-radius);
-  transition: all 0.3s;
-}
-
-.cru-card-background-none {
-  background-color: transparent;
-}
-
-.cru-card-background-solid {
-  background-color: var(--cru-background-color);
-}
-
-.cru-card-background-grayscale {
-  background-color: var(--cru-container-background-color);
-}
-
-.cru-card-border-color {
-  border: 2px solid var(--cru-card-border-color);
-}
diff --git a/FrontEnd/src/views/common/Card.tsx b/FrontEnd/src/views/common/Card.tsx
deleted file mode 100644
index a8f0d3cc..00000000
--- a/FrontEnd/src/views/common/Card.tsx
+++ /dev/null
@@ -1,38 +0,0 @@
-import { ComponentPropsWithoutRef, Ref } from "react";
-import classNames from "classnames";
-
-import { ThemeColor } from "./common";
-import "./Card.css";
-
-interface CardProps extends ComponentPropsWithoutRef<"div"> {
-  containerRef?: Ref<HTMLDivElement>;
-  color?: ThemeColor;
-  border?: "color" | "none";
-  background?: "color" | "solid" | "grayscale" | "none";
-}
-
-export default function Card({
-  color,
-  background,
-  border,
-  className,
-  children,
-  containerRef,
-  ...otherProps
-}: CardProps) {
-  return (
-    <div
-      ref={containerRef}
-      className={classNames(
-        "cru-card",
-        `cru-card-${color ?? "primary"}`,
-        `cru-card-border-${border ?? "color"}`,
-        `cru-card-background-${background ?? "solid"}`,
-        className,
-      )}
-      {...otherProps}
-    >
-      {children}
-    </div>
-  );
-}
diff --git a/FrontEnd/src/views/common/Icon.css b/FrontEnd/src/views/common/Icon.css
deleted file mode 100644
index fe980d7b..00000000
--- a/FrontEnd/src/views/common/Icon.css
+++ /dev/null
@@ -1,3 +0,0 @@
-.cru-icon {
-  font-size: 1.4rem;
-}
diff --git a/FrontEnd/src/views/common/Icon.tsx b/FrontEnd/src/views/common/Icon.tsx
deleted file mode 100644
index 2ac3a7ca..00000000
--- a/FrontEnd/src/views/common/Icon.tsx
+++ /dev/null
@@ -1,30 +0,0 @@
-import { ComponentPropsWithoutRef } from "react";
-import classNames from "classnames";
-
-import { ThemeColor } from "./common";
-
-import "./Icon.css";
-
-interface IconButtonProps extends ComponentPropsWithoutRef<"i"> {
-  icon: string;
-  color?: ThemeColor | "on-surface";
-  size?: string | number;
-}
-
-export default function Icon(props: IconButtonProps) {
-  const { icon, color, size, style, className, ...otherProps } = props;
-
-  const colorName = color === "on-surface" ? "surface-on" : color;
-
-  return (
-    <i
-      style={size != null ? { ...style, fontSize: size } : style}
-      className={classNames(
-        colorName && `cru-${colorName}`,
-        `bi-${icon} cru-icon`,
-        className,
-      )}
-      {...otherProps}
-    />
-  );
-}
diff --git a/FrontEnd/src/views/common/ImageCropper.css b/FrontEnd/src/views/common/ImageCropper.css
deleted file mode 100644
index 2c4d0a8c..00000000
--- a/FrontEnd/src/views/common/ImageCropper.css
+++ /dev/null
@@ -1,38 +0,0 @@
-.image-cropper-container {
-  position: relative;
-  box-sizing: border-box;
-  user-select: none;
-}
-
-.image-cropper-container img {
-  position: absolute;
-  left: 0;
-  top: 0;
-  width: 100%;
-  height: 100%;
-}
-
-.image-cropper-mask-container {
-  position: absolute;
-  left: 0;
-  top: 0;
-  right: 0;
-  bottom: 0;
-  overflow: hidden;
-}
-
-.image-cropper-mask {
-  position: absolute;
-  box-shadow: 0 0 0 10000px rgba(255, 255, 255, 0.8);
-  touch-action: none;
-}
-
-.image-cropper-handler {
-  position: absolute;
-  width: 26px;
-  height: 26px;
-  border: black solid 2px;
-  border-radius: 50%;
-  background: white;
-  touch-action: none;
-}
diff --git a/FrontEnd/src/views/common/ImageCropper.tsx b/FrontEnd/src/views/common/ImageCropper.tsx
deleted file mode 100644
index fcab74b0..00000000
--- a/FrontEnd/src/views/common/ImageCropper.tsx
+++ /dev/null
@@ -1,312 +0,0 @@
-import * as React from "react";
-import classnames from "classnames";
-
-import { UiLogicError } from "@/common";
-
-import "./ImageCropper.css";
-import BlobImage from "./BlobImage";
-
-export interface Clip {
-  left: number;
-  top: number;
-  width: number;
-}
-
-interface NormailizedClip extends Clip {
-  height: number;
-}
-
-interface ImageInfo {
-  width: number;
-  height: number;
-  landscape: boolean;
-  ratio: number;
-  maxClipWidth: number;
-  maxClipHeight: number;
-}
-
-interface ImageCropperSavedState {
-  clip: NormailizedClip;
-  x: number;
-  y: number;
-  pointerId: number;
-}
-
-export interface ImageCropperProps {
-  clip: Clip | null;
-  image: string | Blob;
-  onChange: (clip: Clip) => void;
-  imageElementCallback?: (element: HTMLImageElement | null) => void;
-  className?: string;
-}
-
-const ImageCropper = (props: ImageCropperProps): React.ReactElement => {
-  const { clip, image, onChange, imageElementCallback, className } = props;
-
-  const [oldState, setOldState] = React.useState<ImageCropperSavedState | null>(
-    null,
-  );
-  const [imageInfo, setImageInfo] = React.useState<ImageInfo | null>(null);
-
-  const normalizeClip = (c: Clip | null | undefined): NormailizedClip => {
-    if (c == null) {
-      return { left: 0, top: 0, width: 0, height: 0 };
-    }
-
-    return {
-      left: c.left || 0,
-      top: c.top || 0,
-      width: c.width || 0,
-      height: imageInfo != null ? (c.width || 0) / imageInfo.ratio : 0,
-    };
-  };
-
-  const c = normalizeClip(clip);
-
-  const imgElementRef = React.useRef<HTMLImageElement | null>(null);
-
-  const onImageRef = React.useCallback(
-    (e: HTMLImageElement | null) => {
-      imgElementRef.current = e;
-      if (imageElementCallback != null && e == null) {
-        imageElementCallback(null);
-      }
-    },
-    [imageElementCallback],
-  );
-
-  const onImageLoad = React.useCallback(
-    (e: React.SyntheticEvent<HTMLImageElement>) => {
-      const img = e.currentTarget;
-      const landscape = img.naturalWidth >= img.naturalHeight;
-
-      const info = {
-        width: img.naturalWidth,
-        height: img.naturalHeight,
-        landscape,
-        ratio: img.naturalHeight / img.naturalWidth,
-        maxClipWidth: landscape ? img.naturalHeight / img.naturalWidth : 1,
-        maxClipHeight: landscape ? 1 : img.naturalWidth / img.naturalHeight,
-      };
-      setImageInfo(info);
-      onChange({ left: 0, top: 0, width: info.maxClipWidth });
-      if (imageElementCallback != null) {
-        imageElementCallback(img);
-      }
-    },
-    [onChange, imageElementCallback],
-  );
-
-  const onPointerDown = React.useCallback(
-    (e: React.PointerEvent) => {
-      if (oldState != null) return;
-      e.currentTarget.setPointerCapture(e.pointerId);
-      setOldState({
-        x: e.clientX,
-        y: e.clientY,
-        clip: c,
-        pointerId: e.pointerId,
-      });
-    },
-    [oldState, c],
-  );
-
-  const onPointerUp = React.useCallback(
-    (e: React.PointerEvent) => {
-      if (oldState == null || oldState.pointerId !== e.pointerId) return;
-      e.currentTarget.releasePointerCapture(e.pointerId);
-      setOldState(null);
-    },
-    [oldState],
-  );
-
-  const onPointerMove = React.useCallback(
-    (e: React.PointerEvent) => {
-      if (oldState == null) return;
-
-      const oldClip = oldState.clip;
-
-      const movement = { x: e.clientX - oldState.x, y: e.clientY - oldState.y };
-
-      const { current: imgElement } = imgElementRef;
-
-      if (imgElement == null) throw new UiLogicError("Image element is null.");
-
-      const moveRatio = {
-        x: movement.x / imgElement.width,
-        y: movement.y / imgElement.height,
-      };
-
-      const newRatio = {
-        x: oldClip.left + moveRatio.x,
-        y: oldClip.top + moveRatio.y,
-      };
-      if (newRatio.x < 0) {
-        newRatio.x = 0;
-      } else if (newRatio.x > 1 - oldClip.width) {
-        newRatio.x = 1 - oldClip.width;
-      }
-      if (newRatio.y < 0) {
-        newRatio.y = 0;
-      } else if (newRatio.y > 1 - oldClip.height) {
-        newRatio.y = 1 - oldClip.height;
-      }
-
-      onChange({ left: newRatio.x, top: newRatio.y, width: oldClip.width });
-    },
-    [oldState, onChange],
-  );
-
-  const onHandlerPointerMove = React.useCallback(
-    (e: React.PointerEvent) => {
-      if (oldState == null) return;
-
-      const oldClip = oldState.clip;
-
-      const movement = { x: e.clientX - oldState.x, y: e.clientY - oldState.y };
-
-      const ratio = imageInfo == null ? 1 : imageInfo.ratio;
-
-      const { current: imgElement } = imgElementRef;
-
-      if (imgElement == null) throw new UiLogicError("Image element is null.");
-
-      const moveRatio = {
-        x: movement.x / imgElement.width,
-        y: movement.x / imgElement.width / ratio,
-      };
-
-      const newRatio = {
-        x: oldClip.width + moveRatio.x,
-        y: oldClip.height + moveRatio.y,
-      };
-
-      const maxRatio = {
-        x: Math.min(1 - oldClip.left, newRatio.x),
-        y: Math.min(1 - oldClip.top, newRatio.y),
-      };
-
-      const maxWidthRatio = Math.min(maxRatio.x, maxRatio.y * ratio);
-
-      let newWidth;
-      if (newRatio.x < 0) {
-        newWidth = 0;
-      } else if (newRatio.x > maxWidthRatio) {
-        newWidth = maxWidthRatio;
-      } else {
-        newWidth = newRatio.x;
-      }
-
-      onChange({ left: oldClip.left, top: oldClip.top, width: newWidth });
-    },
-    [imageInfo, oldState, onChange],
-  );
-
-  const toPercentage = (n: number): string => `${n}%`;
-
-  // fuck!!! I just can't find a better way to implement this in pure css
-  const containerStyle: React.CSSProperties = (() => {
-    if (imageInfo == null) {
-      return { width: "100%", paddingTop: "100%", height: 0 };
-    } else {
-      if (imageInfo.ratio > 1) {
-        return {
-          width: toPercentage(100 / imageInfo.ratio),
-          paddingTop: "100%",
-          height: 0,
-        };
-      } else {
-        return {
-          width: "100%",
-          paddingTop: toPercentage(100 * imageInfo.ratio),
-          height: 0,
-        };
-      }
-    }
-  })();
-
-  return (
-    <div
-      className={classnames("image-cropper-container", className)}
-      style={containerStyle}
-    >
-      <BlobImage
-        imgRef={onImageRef}
-        src={image}
-        onLoad={onImageLoad}
-        alt="to crop"
-      />
-      <div className="image-cropper-mask-container">
-        <div
-          className="image-cropper-mask"
-          style={{
-            left: toPercentage(c.left * 100),
-            top: toPercentage(c.top * 100),
-            width: toPercentage(c.width * 100),
-            height: toPercentage(c.height * 100),
-          }}
-          onPointerMove={onPointerMove}
-          onPointerDown={onPointerDown}
-          onPointerUp={onPointerUp}
-        />
-      </div>
-      <div
-        className="image-cropper-handler"
-        style={{
-          left: `calc(${(c.left + c.width) * 100}% - 15px)`,
-          top: `calc(${(c.top + c.height) * 100}% - 15px)`,
-        }}
-        onPointerMove={onHandlerPointerMove}
-        onPointerDown={onPointerDown}
-        onPointerUp={onPointerUp}
-      />
-    </div>
-  );
-};
-
-export default ImageCropper;
-
-export function applyClipToImage(
-  image: HTMLImageElement,
-  clip: Clip,
-  mimeType: string,
-): Promise<Blob> {
-  return new Promise((resolve, reject) => {
-    const naturalSize = {
-      width: image.naturalWidth,
-      height: image.naturalHeight,
-    };
-    const clipArea = {
-      x: naturalSize.width * clip.left,
-      y: naturalSize.height * clip.top,
-      length: naturalSize.width * clip.width,
-    };
-
-    const canvas = document.createElement("canvas");
-    canvas.width = clipArea.length;
-    canvas.height = clipArea.length;
-    const context = canvas.getContext("2d");
-
-    if (context == null) throw new Error("Failed to create context.");
-
-    context.drawImage(
-      image,
-      clipArea.x,
-      clipArea.y,
-      clipArea.length,
-      clipArea.length,
-      0,
-      0,
-      clipArea.length,
-      clipArea.length,
-    );
-
-    canvas.toBlob((blob) => {
-      if (blob == null) {
-        reject(new Error("canvas.toBlob returns null"));
-      } else {
-        resolve(blob);
-      }
-    }, mimeType);
-  });
-}
diff --git a/FrontEnd/src/views/common/LoadFailReload.tsx b/FrontEnd/src/views/common/LoadFailReload.tsx
deleted file mode 100644
index 81ba1f67..00000000
--- a/FrontEnd/src/views/common/LoadFailReload.tsx
+++ /dev/null
@@ -1,37 +0,0 @@
-import * as React from "react";
-import { Trans } from "react-i18next";
-
-export interface LoadFailReloadProps {
-  className?: string;
-  style?: React.CSSProperties;
-  onReload: () => void;
-}
-
-const LoadFailReload: React.FC<LoadFailReloadProps> = ({
-  onReload,
-  className,
-  style,
-}) => {
-  return (
-    <Trans
-      i18nKey="loadFailReload"
-      parent="div"
-      className={className}
-      style={style}
-    >
-      0
-      <a
-        href="#"
-        onClick={(e) => {
-          onReload();
-          e.preventDefault();
-        }}
-      >
-        1
-      </a>
-      2
-    </Trans>
-  );
-};
-
-export default LoadFailReload;
diff --git a/FrontEnd/src/views/common/LoadingPage.tsx b/FrontEnd/src/views/common/LoadingPage.tsx
deleted file mode 100644
index 35ee1aa8..00000000
--- a/FrontEnd/src/views/common/LoadingPage.tsx
+++ /dev/null
@@ -1,13 +0,0 @@
-import * as React from "react";
-
-import Spinner from "./Spinner";
-
-const LoadingPage: React.FC = () => {
-  return (
-    <div className="position-fixed w-100 h-100 d-flex justify-content-center align-items-center">
-      <Spinner />
-    </div>
-  );
-};
-
-export default LoadingPage;
diff --git a/FrontEnd/src/views/common/Page.tsx b/FrontEnd/src/views/common/Page.tsx
deleted file mode 100644
index 86fdb2f5..00000000
--- a/FrontEnd/src/views/common/Page.tsx
+++ /dev/null
@@ -1,15 +0,0 @@
-import { ComponentPropsWithoutRef, Ref } from "react";
-import classNames from "classnames";
-
-interface PageProps extends ComponentPropsWithoutRef<"div"> {
-  noTopPadding?: boolean;
-  pageRef?: Ref<HTMLDivElement>;
-}
-
-export default function Page({ noTopPadding, pageRef, className, children }: PageProps) {
-  return (
-    <div ref={pageRef} className={classNames(className, "cru-page", noTopPadding && "cru-page-no-top-padding")}>
-      {children}
-    </div>
-  );
-}
diff --git a/FrontEnd/src/views/common/SearchInput.css b/FrontEnd/src/views/common/SearchInput.css
deleted file mode 100644
index f0503016..00000000
--- a/FrontEnd/src/views/common/SearchInput.css
+++ /dev/null
@@ -1,8 +0,0 @@
-.cru-search-input {
-  display: flex;
-  flex-wrap: wrap;
-}
-
-.cru-search-input-input {
-  width: 100%;
-}
diff --git a/FrontEnd/src/views/common/SearchInput.tsx b/FrontEnd/src/views/common/SearchInput.tsx
deleted file mode 100644
index e3216b86..00000000
--- a/FrontEnd/src/views/common/SearchInput.tsx
+++ /dev/null
@@ -1,50 +0,0 @@
-import classNames from "classnames";
-
-import { useC, Text } from "./common";
-import LoadingButton from "./button/LoadingButton";
-
-import "./SearchInput.css";
-
-interface SearchInputProps {
-  value: string;
-  onChange: (value: string) => void;
-  onButtonClick: () => void;
-  loading?: boolean;
-  className?: string;
-  buttonText?: Text;
-}
-
-export default function SearchInput({
-  value,
-  onChange,
-  onButtonClick,
-  loading,
-  className,
-  buttonText,
-}: SearchInputProps) {
-  const c = useC();
-
-  return (
-    <div className={classNames("cru-search-input", className)}>
-      <input
-        type="text"
-        className="cru-search-input-input"
-        value={value}
-        onChange={(event) => {
-          const { value } = event.currentTarget;
-          onChange(value);
-        }}
-        onKeyDown={(event) => {
-          if (event.key === "Enter") {
-            onButtonClick();
-            event.preventDefault();
-          }
-        }}
-      />
-
-      <LoadingButton loading={loading} onClick={onButtonClick}>
-        {c(buttonText ?? "search")}
-      </LoadingButton>
-    </div>
-  );
-}
diff --git a/FrontEnd/src/views/common/Skeleton.css b/FrontEnd/src/views/common/Skeleton.css
deleted file mode 100644
index a571eead..00000000
--- a/FrontEnd/src/views/common/Skeleton.css
+++ /dev/null
@@ -1,14 +0,0 @@
-.cru-skeleton {
-  padding: 0 1em;
-}
-
-.cru-skeleton-line {
-  height: 1em;
-  background-color: hsl(0, 0%, 90%);
-  margin: 0.7em 0;
-  border-radius: 0.2em;
-}
-
-.cru-skeleton-line.last {
-  width: 50%;
-}
diff --git a/FrontEnd/src/views/common/Skeleton.tsx b/FrontEnd/src/views/common/Skeleton.tsx
deleted file mode 100644
index 3b149db9..00000000
--- a/FrontEnd/src/views/common/Skeleton.tsx
+++ /dev/null
@@ -1,32 +0,0 @@
-import * as React from "react";
-import classnames from "classnames";
-import range from "lodash/range";
-
-import "./Skeleton.css";
-
-export interface SkeletonProps {
-  lineNumber?: number;
-  className?: string;
-  style?: React.CSSProperties;
-}
-
-const Skeleton: React.FC<SkeletonProps> = (props) => {
-  const { lineNumber: lineNumberProps, className, style } = props;
-  const lineNumber = lineNumberProps ?? 3;
-
-  return (
-    <div className={classnames(className, "cru-skeleton")} style={style}>
-      {range(lineNumber).map((i) => (
-        <div
-          key={i}
-          className={classnames(
-            "cru-skeleton-line",
-            i === lineNumber - 1 && "last"
-          )}
-        />
-      ))}
-    </div>
-  );
-};
-
-export default Skeleton;
diff --git a/FrontEnd/src/views/common/Spinner.css b/FrontEnd/src/views/common/Spinner.css
deleted file mode 100644
index a1de68d2..00000000
--- a/FrontEnd/src/views/common/Spinner.css
+++ /dev/null
@@ -1,13 +0,0 @@
-@keyframes cru-spinner-animation {
-  from {
-    transform: scale(0,0);
-  }
-}
-
-.cru-spinner {
-  display: inline-block;
-  animation: cru-spinner-animation 0.5s infinite alternate;
-  background-color: currentColor;
-  border-radius: 50%;
-  transform-origin: center;
-}
diff --git a/FrontEnd/src/views/common/Spinner.tsx b/FrontEnd/src/views/common/Spinner.tsx
deleted file mode 100644
index ec0c2c35..00000000
--- a/FrontEnd/src/views/common/Spinner.tsx
+++ /dev/null
@@ -1,36 +0,0 @@
-import { CSSProperties } from "react";
-import classnames from "classnames";
-
-import { ThemeColor } from "./common";
-
-import "./Spinner.css";
-
-export interface SpinnerProps {
-  size?: "sm" | "md" | "lg" | number | string;
-  color?: ThemeColor;
-  className?: string;
-  style?: CSSProperties;
-}
-
-export default function Spinner(props: SpinnerProps) {
-  const { size, color, className, style } = props;
-  const calculatedSize =
-    size === "sm"
-      ? "18px"
-      : size === "md"
-      ? "30px"
-      : size === "lg"
-      ? "42px"
-      : typeof size === "number"
-      ? size
-      : size == null
-      ? "20px"
-      : size;
-
-  return (
-    <span
-      className={classnames("cru-spinner", color && `cru-${color}`, className)}
-      style={{ width: calculatedSize, height: calculatedSize, ...style }}
-    />
-  );
-}
diff --git a/FrontEnd/src/views/common/TimelineLogo.tsx b/FrontEnd/src/views/common/TimelineLogo.tsx
deleted file mode 100644
index e06ed0f5..00000000
--- a/FrontEnd/src/views/common/TimelineLogo.tsx
+++ /dev/null
@@ -1,27 +0,0 @@
-import { SVGAttributes } from "react";
-import * as React from "react";
-
-export interface TimelineLogoProps extends SVGAttributes<SVGElement> {
-  color?: string;
-}
-
-const TimelineLogo: React.FC<TimelineLogoProps> = (props) => {
-  const { color, ...forwardProps } = props;
-  const coercedColor = color ?? "currentcolor";
-  return (
-    <svg
-      className={props.className}
-      viewBox="0 0 100 100"
-      fill="none"
-      strokeWidth="12"
-      stroke={coercedColor}
-      {...forwardProps}
-    >
-      <line x1="50" y1="0" x2="50" y2="25" />
-      <circle cx="50" cy="50" r="22" />
-      <line x1="50" y1="75" x2="50" y2="100" />
-    </svg>
-  );
-};
-
-export default TimelineLogo;
diff --git a/FrontEnd/src/views/common/alert/AlertHost.tsx b/FrontEnd/src/views/common/alert/AlertHost.tsx
deleted file mode 100644
index 42074781..00000000
--- a/FrontEnd/src/views/common/alert/AlertHost.tsx
+++ /dev/null
@@ -1,113 +0,0 @@
-import * as React from "react";
-import without from "lodash/without";
-import { useTranslation } from "react-i18next";
-import classNames from "classnames";
-
-import { alertService, AlertInfoEx, AlertInfo } from "@/services/alert";
-import { convertI18nText } from "@/common";
-
-import IconButton from "../button/IconButton";
-
-import "./alert.css";
-
-interface AutoCloseAlertProps {
-  alert: AlertInfo;
-  close: () => void;
-}
-
-export const AutoCloseAlert: React.FC<AutoCloseAlertProps> = (props) => {
-  const { alert, close } = props;
-  const { dismissTime } = alert;
-
-  const { t } = useTranslation();
-
-  const timerTag = React.useRef<number | null>(null);
-  const closeHandler = React.useRef<(() => void) | null>(null);
-
-  React.useEffect(() => {
-    closeHandler.current = close;
-  }, [close]);
-
-  React.useEffect(() => {
-    const tag =
-      dismissTime === "never"
-        ? null
-        : typeof dismissTime === "number"
-        ? window.setTimeout(() => closeHandler.current?.(), dismissTime)
-        : window.setTimeout(() => closeHandler.current?.(), 5000);
-    timerTag.current = tag;
-    return () => {
-      if (tag != null) {
-        window.clearTimeout(tag);
-      }
-    };
-  }, [dismissTime]);
-
-  const cancelTimer = (): void => {
-    const { current: tag } = timerTag;
-    if (tag != null) {
-      window.clearTimeout(tag);
-    }
-  };
-
-  return (
-    <div
-      className={classNames(
-        "m-3 cru-alert",
-        "cru-" + (alert.type ?? "primary")
-      )}
-      onClick={cancelTimer}
-    >
-      <div className="cru-alert-content">
-        {(() => {
-          const { message, customMessage } = alert;
-          if (customMessage != null) {
-            return customMessage;
-          } else {
-            return convertI18nText(message, t);
-          }
-        })()}
-      </div>
-      <div className="cru-alert-close-button-container">
-        <IconButton
-          icon="x"
-          className="cru-alert-close-button"
-          onClick={close}
-        />
-      </div>
-    </div>
-  );
-};
-
-const AlertHost: React.FC = () => {
-  const [alerts, setAlerts] = React.useState<AlertInfoEx[]>([]);
-
-  React.useEffect(() => {
-    const consume = (alert: AlertInfoEx): void => {
-      setAlerts((old) => [...old, alert]);
-    };
-
-    alertService.registerConsumer(consume);
-    return () => {
-      alertService.unregisterConsumer(consume);
-    };
-  }, []);
-
-  return (
-    <div className="alert-container">
-      {alerts.map((alert) => {
-        return (
-          <AutoCloseAlert
-            key={alert.id}
-            alert={alert}
-            close={() => {
-              setAlerts((old) => without(old, alert));
-            }}
-          />
-        );
-      })}
-    </div>
-  );
-};
-
-export default AlertHost;
diff --git a/FrontEnd/src/views/common/alert/alert.css b/FrontEnd/src/views/common/alert/alert.css
deleted file mode 100644
index 54c2b87f..00000000
--- a/FrontEnd/src/views/common/alert/alert.css
+++ /dev/null
@@ -1,33 +0,0 @@
-.alert-container {
-  position: fixed;
-  z-index: 1040;
-}
-
-.cru-alert {
-  border-radius: 5px;
-  border: var(--cru-key-color) 1px solid;
-  color: var(--cru-key-t-color);
-  background-color: var(--cru-key-b1-color);
-
-  display: flex;
-  overflow: hidden;
-}
-
-.cru-alert-content {
-  padding: 0.5em 2em;
-}
-
-.cru-alert-close-button-container {
-  flex-shrink: 0;
-  margin-left: auto;
-  width: 2em;
-  text-align: center;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  background-color: var(--cru-key-t-color);
-}
-
-.cru-alert-close-button {
-  color: var(--cru-key-color);
-}
diff --git a/FrontEnd/src/views/common/breakpoints.ts b/FrontEnd/src/views/common/breakpoints.ts
deleted file mode 100644
index fb281610..00000000
--- a/FrontEnd/src/views/common/breakpoints.ts
+++ /dev/null
@@ -1,3 +0,0 @@
-export const breakpoints = {
-  sm: 576,
-} as const;
diff --git a/FrontEnd/src/views/common/button/Button.css b/FrontEnd/src/views/common/button/Button.css
deleted file mode 100644
index 1da70f0e..00000000
--- a/FrontEnd/src/views/common/button/Button.css
+++ /dev/null
@@ -1,64 +0,0 @@
-.cru-button {
-  font-size: 1rem;
-  padding: 0.4em 0.8em;
-  transition: all 0.3s;
-  border-radius: 0.2em;
-  border: 1px solid;
-  cursor: pointer;
-}
-
-.cru-button:not(.outline) {
-  color: var(--cru-push-button-text-color);
-  background-color: var(--cru-clickable-normal-color);
-  border-color: var(--cru-clickable-normal-color);
-}
-
-.cru-button:not(.outline):hover {
-  background-color: var(--cru-clickable-hover-color);
-  border-color: var(--cru-clickable-hover-color);
-}
-
-.cru-button:not(.outline):focus {
-  background-color: var(--cru-clickable-focus-color);
-  border-color: var(--cru-clickable-focus-color);
-}
-
-.cru-button:not(.outline):active {
-  background-color: var(--cru-clickable-active-color);
-  border-color: var(--cru-clickable-active-color);
-}
-
-.cru-button:not(.outline):disabled {
-  color: var(--cru-push-button-disabled-text-color);
-  background-color: var(--cru-push-button-disabled-color);
-  border-color: var(--cru-push-button-disabled-color);
-  cursor: auto;
-}
-
-
-.cru-button.outline {
-  color: var(--cru-clickable-normal-color);
-  border-color: var(--cru-clickable-normal-color);
-  background-color: transparent;
-}
-
-.cru-button.outline:hover {
-  color: var(--cru-clickable-hover-color);
-  border-color: var(--cru-clickable-hover-color);
-}
-
-.cru-button.outline:focus {
-  color: var(--cru-clickable-focus-color);
-  border-color: var(--cru-clickable-focus-color);
-}
-
-.cru-button.outline:active {
-  color: var(--cru-clickable-active-color);
-  border-color: var(--cru-clickable-active-color);
-}
-
-.cru-button.outline:disabled {
-  color: var(--cru-clickable-disabled-color);
-  border-color: var(--cru-clickable-disabled-color);
-  cursor: auto;
-}
diff --git a/FrontEnd/src/views/common/button/Button.tsx b/FrontEnd/src/views/common/button/Button.tsx
deleted file mode 100644
index 6c38e130..00000000
--- a/FrontEnd/src/views/common/button/Button.tsx
+++ /dev/null
@@ -1,46 +0,0 @@
-import { ComponentPropsWithoutRef, Ref } from "react";
-import classNames from "classnames";
-
-import { Text, useC, ThemeColor } from "../common";
-
-import "./Button.css";
-
-interface ButtonProps extends ComponentPropsWithoutRef<"button"> {
-  color?: ThemeColor;
-  text?: Text;
-  outline?: boolean;
-  buttonRef?: Ref<HTMLButtonElement> | null;
-}
-
-export default function Button(props: ButtonProps) {
-  const {
-    buttonRef,
-    color,
-    text,
-    outline,
-    className,
-    children,
-    ...otherProps
-  } = props;
-
-  if (text != null && children != null) {
-    console.warn("You can't set both text and children props.");
-  }
-
-  const c = useC();
-
-  return (
-    <button
-      ref={buttonRef}
-      className={classNames(
-        "cru-button",
-        `cru-clickable-${color ?? "primary"}`,
-        outline && "outline",
-        className,
-      )}
-      {...otherProps}
-    >
-      {text != null ? c(text) : children}
-    </button>
-  );
-}
diff --git a/FrontEnd/src/views/common/button/ButtonRow.css b/FrontEnd/src/views/common/button/ButtonRow.css
deleted file mode 100644
index e69de29b..00000000
diff --git a/FrontEnd/src/views/common/button/ButtonRow.tsx b/FrontEnd/src/views/common/button/ButtonRow.tsx
deleted file mode 100644
index eea60cc4..00000000
--- a/FrontEnd/src/views/common/button/ButtonRow.tsx
+++ /dev/null
@@ -1,62 +0,0 @@
-import { ComponentPropsWithoutRef, Ref } from "react";
-import classNames from "classnames";
-
-import Button from "./Button";
-import FlatButton from "./FlatButton";
-import IconButton from "./IconButton";
-import LoadingButton from "./LoadingButton";
-
-import "./ButtonRow.css";
-
-type ButtonRowButton = (
-  | {
-      type: "normal";
-      props: ComponentPropsWithoutRef<typeof Button>;
-    }
-  | {
-      type: "flat";
-      props: ComponentPropsWithoutRef<typeof FlatButton>;
-    }
-  | {
-      type: "icon";
-      props: ComponentPropsWithoutRef<typeof IconButton>;
-    }
-  | { type: "loading"; props: ComponentPropsWithoutRef<typeof LoadingButton> }
-) & { key: string | number };
-
-interface ButtonRowProps {
-  className?: string;
-  containerRef?: Ref<HTMLDivElement>;
-  buttons: ButtonRowButton[];
-  buttonsClassName?: string;
-}
-
-export default function ButtonRow({
-  className,
-  containerRef,
-  buttons,
-  buttonsClassName,
-}: ButtonRowProps) {
-  return (
-    <div ref={containerRef} className={classNames("cru-button-row", className)}>
-      {buttons.map((button) => {
-        const { type, key, props } = button;
-        const newClassName = classNames(props.className, buttonsClassName);
-        switch (type) {
-          case "normal":
-            return <Button key={key} {...props} className={newClassName} />;
-          case "flat":
-            return <FlatButton key={key} {...props} className={newClassName} />;
-          case "icon":
-            return <IconButton key={key} {...props} className={newClassName} />;
-          case "loading":
-            return (
-              <LoadingButton key={key} {...props} className={newClassName} />
-            );
-          default:
-            throw new Error();
-        }
-      })}
-    </div>
-  );
-}
diff --git a/FrontEnd/src/views/common/button/ButtonRowV2.tsx b/FrontEnd/src/views/common/button/ButtonRowV2.tsx
deleted file mode 100644
index 3467ad52..00000000
--- a/FrontEnd/src/views/common/button/ButtonRowV2.tsx
+++ /dev/null
@@ -1,143 +0,0 @@
-import { ComponentPropsWithoutRef, Ref } from "react";
-import classNames from "classnames";
-
-import Button from "./Button";
-import FlatButton from "./FlatButton";
-import IconButton from "./IconButton";
-import LoadingButton from "./LoadingButton";
-
-import "./ButtonRow.css";
-import { Text, ThemeColor } from "../common";
-
-interface ButtonRowV2ButtonBase {
-  key: string | number;
-  action?: "primary" | "secondary";
-  color?: ThemeColor;
-  disabled?: boolean;
-  onClick?: () => void;
-}
-
-interface ButtonRowV2ButtonWithNoType extends ButtonRowV2ButtonBase {
-  type?: undefined | null;
-  text: Text;
-  outline?: boolean;
-  props?: ComponentPropsWithoutRef<typeof Button>;
-}
-
-interface ButtonRowV2NormalButton extends ButtonRowV2ButtonBase {
-  type: "normal";
-  text: Text;
-  outline?: boolean;
-  props?: ComponentPropsWithoutRef<typeof Button>;
-}
-
-interface ButtonRowV2FlatButton extends ButtonRowV2ButtonBase {
-  type: "flat";
-  text: Text;
-  props?: ComponentPropsWithoutRef<typeof FlatButton>;
-}
-
-interface ButtonRowV2IconButton extends ButtonRowV2ButtonBase {
-  type: "icon";
-  icon: string;
-  props?: ComponentPropsWithoutRef<typeof IconButton>;
-}
-
-interface ButtonRowV2LoadingButton extends ButtonRowV2ButtonBase {
-  type: "loading";
-  text: Text;
-  loading?: boolean;
-  props?: ComponentPropsWithoutRef<typeof LoadingButton>;
-}
-
-type ButtonRowV2Button =
-  | ButtonRowV2ButtonWithNoType
-  | ButtonRowV2NormalButton
-  | ButtonRowV2FlatButton
-  | ButtonRowV2IconButton
-  | ButtonRowV2LoadingButton;
-
-interface ButtonRowV2Props {
-  className?: string;
-  containerRef?: Ref<HTMLDivElement>;
-  buttons: ButtonRowV2Button[];
-  buttonsClassName?: string;
-}
-
-export default function ButtonRowV2({
-  className,
-  containerRef,
-  buttons,
-  buttonsClassName,
-}: ButtonRowV2Props) {
-  return (
-    <div ref={containerRef} className={classNames("cru-button-row", className)}>
-      {buttons.map((button) => {
-        const { key, action, color, disabled, onClick } = button;
-
-        const realAction = action ?? "primary";
-        const realColor =
-          color ?? (realAction === "primary" ? "primary" : "secondary");
-
-        const commonProps = { key, color: realColor, disabled, onClick };
-        const newClassName = classNames(
-          button.props?.className,
-          buttonsClassName,
-        );
-
-        switch (button.type) {
-          case null:
-          case undefined:
-          case "normal": {
-            const { text, outline, props } = button;
-            return (
-              <Button
-                {...commonProps}
-                text={text}
-                outline={outline ?? realAction !== "primary"}
-                {...props}
-                className={newClassName}
-              />
-            );
-          }
-          case "flat": {
-            const { text, props } = button;
-            return (
-              <FlatButton
-                {...commonProps}
-                text={text}
-                {...props}
-                className={newClassName}
-              />
-            );
-          }
-          case "icon": {
-            const { icon, props } = button;
-            return (
-              <IconButton
-                {...commonProps}
-                icon={icon}
-                {...props}
-                className={newClassName}
-              />
-            );
-          }
-          case "loading": {
-            const { text, loading, props } = button;
-            return (
-              <LoadingButton
-                {...commonProps}
-                text={text}
-                loading={loading}
-                {...props}
-                className={newClassName}
-              />
-            );
-          }
-          default:
-            throw new Error();
-        }
-      })}
-    </div>
-  );
-}
diff --git a/FrontEnd/src/views/common/button/FlatButton.css b/FrontEnd/src/views/common/button/FlatButton.css
deleted file mode 100644
index 2050946c..00000000
--- a/FrontEnd/src/views/common/button/FlatButton.css
+++ /dev/null
@@ -1,27 +0,0 @@
-.cru-flat-button {
-  font-size: 1rem;
-  padding: 0.4em 0.8em;
-  transition: all 0.5s;
-  border-radius: 0.2em;
-  background-color: var(--cru-clickable-grayscale-normal-color);
-  border: 1px none;
-  color: var(--cru-clickable-normal-color);
-  cursor: pointer;
-}
-
-.cru-flat-button:hover {
-  background-color: var(--cru-clickable-grayscale-hover-color);
-}
-
-.cru-flat-button:focus {
-  background-color: var(--cru-clickable-grayscale-focus-color);
-}
-
-.cru-flat-button:active {
-  background-color: var(--cru-clickable-grayscale-active-color);
-}
-
-.cru-flat-button:disabled {
-  color: var(--cru-clickable-disabled-color);
-  cursor: auto;
-}
\ No newline at end of file
diff --git a/FrontEnd/src/views/common/button/FlatButton.tsx b/FrontEnd/src/views/common/button/FlatButton.tsx
deleted file mode 100644
index 9f074dd6..00000000
--- a/FrontEnd/src/views/common/button/FlatButton.tsx
+++ /dev/null
@@ -1,36 +0,0 @@
-import { ComponentPropsWithoutRef, Ref } from "react";
-import classNames from "classnames";
-
-import { Text, useC, ThemeColor } from "../common";
-
-import "./FlatButton.css";
-
-interface FlatButtonProps extends ComponentPropsWithoutRef<"button"> {
-  color?: ThemeColor;
-  text?: Text;
-  buttonRef?: Ref<HTMLButtonElement> | null;
-}
-
-export default function FlatButton(props: FlatButtonProps) {
-  const { color, text, className, children, buttonRef, ...otherProps } = props;
-
-  if (text != null && children != null) {
-    console.warn("You can't set both text and children props.");
-  }
-
-  const c = useC();
-
-  return (
-    <button
-      ref={buttonRef}
-      className={classNames(
-        "cru-flat-button",
-        `cru-clickable-${color ?? "primary"}`,
-        className,
-      )}
-      {...otherProps}
-    >
-      {text != null ? c(text) : children}
-    </button>
-  );
-}
diff --git a/FrontEnd/src/views/common/button/IconButton.css b/FrontEnd/src/views/common/button/IconButton.css
deleted file mode 100644
index a3747201..00000000
--- a/FrontEnd/src/views/common/button/IconButton.css
+++ /dev/null
@@ -1,30 +0,0 @@
-.cru-icon-button {
-  color: var(--cru-clickable-normal-color);
-  font-size: 1.4rem;
-  background: none;
-  border: none;
-  transition: all 0.5s;
-  cursor: pointer;
-  user-select: none;
-}
-
-.cru-icon-button:hover {
-  color: var(--cru-clickable-hover-color);
-}
-
-.cru-icon-button:focus {
-  color: var(--cru-clickable-focus-color);
-}
-
-.cru-icon-button:active {
-  color: var(--cru-clickable-active-color);
-}
-
-.cru-flat-button:disabled {
-  color: var(--cru-clickable-disabled-color);
-  cursor: auto;
-}
-
-.cru-icon-button.large {
-  font-size: 1.6rem;
-}
diff --git a/FrontEnd/src/views/common/button/IconButton.tsx b/FrontEnd/src/views/common/button/IconButton.tsx
deleted file mode 100644
index 95c58887..00000000
--- a/FrontEnd/src/views/common/button/IconButton.tsx
+++ /dev/null
@@ -1,30 +0,0 @@
-import { ComponentPropsWithoutRef } from "react";
-import classNames from "classnames";
-
-import { ThemeColor } from "../common";
-
-import "./IconButton.css";
-
-interface IconButtonProps extends ComponentPropsWithoutRef<"i"> {
-  icon: string;
-  color?: ThemeColor | "grayscale";
-  large?: boolean;
-  disabled?: boolean; // TODO: Not implemented
-}
-
-export default function IconButton(props: IconButtonProps) {
-  const { icon, color, className, large, ...otherProps } = props;
-
-  return (
-    <button
-      className={classNames(
-        "cru-icon-button",
-        `cru-clickable-${color ?? "grayscale"}`,
-        large && "large",
-        "bi-" + icon,
-        className,
-      )}
-      {...otherProps}
-    />
-  );
-}
diff --git a/FrontEnd/src/views/common/button/LoadingButton.css b/FrontEnd/src/views/common/button/LoadingButton.css
deleted file mode 100644
index 23fadd3d..00000000
--- a/FrontEnd/src/views/common/button/LoadingButton.css
+++ /dev/null
@@ -1,13 +0,0 @@
-.cru-loading-button {
-  display: flex;
-  align-items: center;
-}
-
-.cru-loading-button-spinner {
-  margin-left: 0.5em;
-}
-
-.cru-loading-button-loading {
-  color: var(--cru-clickable-normal-color) !important;
-  border-color: var(--cru-clickable-normal-color) !important;
-}
\ No newline at end of file
diff --git a/FrontEnd/src/views/common/button/LoadingButton.tsx b/FrontEnd/src/views/common/button/LoadingButton.tsx
deleted file mode 100644
index 7e7d08e6..00000000
--- a/FrontEnd/src/views/common/button/LoadingButton.tsx
+++ /dev/null
@@ -1,40 +0,0 @@
-import classNames from "classnames";
-
-import { I18nText, ThemeColor, useC } from "../common";
-
-import Spinner from "../Spinner";
-
-import "./LoadingButton.css";
-
-interface LoadingButtonProps extends React.ComponentPropsWithoutRef<"button"> {
-  color?: ThemeColor;
-  text?: I18nText;
-  loading?: boolean;
-}
-
-export default function LoadingButton(props: LoadingButtonProps) {
-  const c = useC();
-
-  const { color, text, loading, disabled, className, children, ...otherProps } =
-    props;
-
-  if (text != null && children != null) {
-    console.warn("You can't set both text and children props.");
-  }
-
-  return (
-    <button
-      disabled={disabled || loading}
-      className={classNames(
-        "cru-button outline cru-loading-button",
-        `cru-clickable-${color ?? "primary"}`,
-        loading && "cru-loading-button-loading",
-        className,
-      )}
-      {...otherProps}
-    >
-      {text != null ? c(text) : children}
-      {loading && <Spinner className="cru-loading-button-spinner" />}
-    </button>
-  );
-}
diff --git a/FrontEnd/src/views/common/button/index.tsx b/FrontEnd/src/views/common/button/index.tsx
deleted file mode 100644
index b5aa5470..00000000
--- a/FrontEnd/src/views/common/button/index.tsx
+++ /dev/null
@@ -1,15 +0,0 @@
-import Button from "./Button";
-import FlatButton from "./FlatButton";
-import IconButton from "./IconButton";
-import LoadingButton from "./LoadingButton";
-import ButtonRow from "./ButtonRow";
-import ButtonRowV2 from "./ButtonRowV2";
-
-export {
-  Button,
-  FlatButton,
-  IconButton,
-  LoadingButton,
-  ButtonRow,
-  ButtonRowV2,
-};
diff --git a/FrontEnd/src/views/common/common.ts b/FrontEnd/src/views/common/common.ts
deleted file mode 100644
index 7af2643b..00000000
--- a/FrontEnd/src/views/common/common.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-export type { Text, I18nText } from "@/common";
-export { c, convertI18nText, useC } from "@/common";
-
-export const themeColors = [
-  "primary",
-  "secondary",
-  "danger",
-  "create",
-] as const;
-
-export type ThemeColor = (typeof themeColors)[number];
-
-export { breakpoints } from "./breakpoints";
-export { useMobile } from "./hooks";
diff --git a/FrontEnd/src/views/common/dialog/ConfirmDialog.css b/FrontEnd/src/views/common/dialog/ConfirmDialog.css
deleted file mode 100644
index e69de29b..00000000
diff --git a/FrontEnd/src/views/common/dialog/ConfirmDialog.tsx b/FrontEnd/src/views/common/dialog/ConfirmDialog.tsx
deleted file mode 100644
index dbbd15c6..00000000
--- a/FrontEnd/src/views/common/dialog/ConfirmDialog.tsx
+++ /dev/null
@@ -1,59 +0,0 @@
-import { useC, Text, ThemeColor } from "@/views/common/common";
-
-import Dialog from "./Dialog";
-import DialogContainer from "./DialogContainer";
-
-export default function ConfirmDialog({
-  open,
-  onClose,
-  onConfirm,
-  title,
-  body,
-  color,
-  bodyColor,
-}: {
-  open: boolean;
-  onClose: () => void;
-  onConfirm: () => void;
-  title: Text;
-  body: Text;
-  color?: ThemeColor;
-  bodyColor?: ThemeColor;
-}) {
-  const c = useC();
-
-  return (
-    <Dialog onClose={onClose} open={open}>
-      <DialogContainer
-        title={title}
-        titleColor={color ?? "danger"}
-        buttons={[
-          {
-            key: "cancel",
-            type: "normal",
-            props: {
-              text: "operationDialog.cancel",
-              color: "secondary",
-              outline: true,
-              onClick: onClose,
-            },
-          },
-          {
-            key: "confirm",
-            type: "normal",
-            props: {
-              text: "operationDialog.confirm",
-              color: "danger",
-              onClick: () => {
-                onConfirm();
-                onClose();
-              },
-            },
-          },
-        ]}
-      >
-        <div className={`cru-${bodyColor ?? "primary"}`}>{c(body)}</div>
-      </DialogContainer>
-    </Dialog>
-  );
-}
diff --git a/FrontEnd/src/views/common/dialog/Dialog.css b/FrontEnd/src/views/common/dialog/Dialog.css
deleted file mode 100644
index e4c61440..00000000
--- a/FrontEnd/src/views/common/dialog/Dialog.css
+++ /dev/null
@@ -1,60 +0,0 @@
-.cru-dialog-overlay {
-  position: fixed;
-  z-index: 1040;
-  left: 0;
-  top: 0;
-  right: 0;
-  bottom: 0;
-  display: flex;
-  align-items: center;
-  overflow: auto;
-}
-
-.cru-dialog-background {
-  position: absolute;
-  z-index: -1;
-  left: 0;
-  right: 0;
-  top: 0;
-  bottom: 0;
-  background-color: var(--cru-surface-dim-color);
-  opacity: 0.8;
-}
-
-.cru-dialog-container {
-  max-width: 100%;
-  min-width: 30vw;
-
-  margin: 2em auto;
-
-  border: var(--cru-key-container-color) 1px solid;
-  border-radius: 5px;
-  padding: 1.5em;
-  background-color: var(--cru-surface-color);
-}
-
-@media (min-width: 576px) {
-  .cru-dialog-container {
-    max-width: 800px;
-  }
-}
-
-.cru-dialog-enter .cru-dialog-container {
-  transform: scale(0, 0);
-  opacity: 0;
-  transform-origin: center;
-}
-
-.cru-dialog-enter-active .cru-dialog-container {
-  transform: scale(1, 1);
-  opacity: 1;
-  transition: transform 0.3s, opacity 0.3s;
-  transform-origin: center;
-}
-
-.cru-dialog-exit-active .cru-dialog-container {
-  transition: transform 0.3s, opacity 0.3s;
-  transform: scale(0, 0);
-  opacity: 0;
-  transform-origin: center;
-}
\ No newline at end of file
diff --git a/FrontEnd/src/views/common/dialog/Dialog.tsx b/FrontEnd/src/views/common/dialog/Dialog.tsx
deleted file mode 100644
index 2ff7bea8..00000000
--- a/FrontEnd/src/views/common/dialog/Dialog.tsx
+++ /dev/null
@@ -1,63 +0,0 @@
-import { ReactNode, useRef } from "react";
-import ReactDOM from "react-dom";
-import { CSSTransition } from "react-transition-group";
-import classNames from "classnames";
-
-import { ThemeColor } from "../common";
-
-import "./Dialog.css";
-
-const optionalPortalElement = document.getElementById("portal");
-if (optionalPortalElement == null) {
-  throw new Error("Portal element not found");
-}
-const portalElement = optionalPortalElement;
-
-interface DialogProps {
-  open: boolean;
-  onClose: () => void;
-  color?: ThemeColor;
-  children?: ReactNode;
-  disableCloseOnClickOnOverlay?: boolean;
-}
-
-export default function Dialog({
-  open,
-  onClose,
-  color,
-  children,
-  disableCloseOnClickOnOverlay,
-}: DialogProps) {
-  color = color ?? "primary";
-
-  const nodeRef = useRef(null);
-
-  return ReactDOM.createPortal(
-    <CSSTransition
-      nodeRef={nodeRef}
-      mountOnEnter
-      unmountOnExit
-      in={open}
-      timeout={300}
-      classNames="cru-dialog"
-    >
-      <div
-        ref={nodeRef}
-        className={classNames("cru-dialog-overlay", `cru-${color}`)}
-      >
-        <div
-          className="cru-dialog-background"
-          onClick={
-            disableCloseOnClickOnOverlay
-              ? undefined
-              : () => {
-                  onClose();
-                }
-          }
-        />
-        <div className="cru-dialog-container">{children}</div>
-      </div>
-    </CSSTransition>,
-    portalElement,
-  );
-}
diff --git a/FrontEnd/src/views/common/dialog/DialogContainer.css b/FrontEnd/src/views/common/dialog/DialogContainer.css
deleted file mode 100644
index fbb18e0d..00000000
--- a/FrontEnd/src/views/common/dialog/DialogContainer.css
+++ /dev/null
@@ -1,20 +0,0 @@
-.cru-dialog-container-title {
-  font-size: 1.2em;
-  font-weight: bold;
-  color: var(--cru-key-color);
-  margin-bottom: 0.5em;
-}
-
-
-.cru-dialog-container-hr {
-  margin: 1em 0;
-}
-
-.cru-dialog-container-button-row {
-  display: flex;
-  justify-content: flex-end;
-}
-
-.cru-dialog-container-button {
-  margin-left: 1em;
-}
\ No newline at end of file
diff --git a/FrontEnd/src/views/common/dialog/DialogContainer.tsx b/FrontEnd/src/views/common/dialog/DialogContainer.tsx
deleted file mode 100644
index afee2669..00000000
--- a/FrontEnd/src/views/common/dialog/DialogContainer.tsx
+++ /dev/null
@@ -1,95 +0,0 @@
-import { ComponentProps, Ref, ReactNode } from "react";
-import classNames from "classnames";
-
-import { ThemeColor, Text, useC } from "../common";
-import { ButtonRow, ButtonRowV2 } from "../button";
-
-import "./DialogContainer.css";
-
-interface DialogContainerBaseProps {
-  className?: string;
-  title: Text;
-  titleColor?: ThemeColor;
-  titleClassName?: string;
-  titleRef?: Ref<HTMLDivElement>;
-  bodyContainerClassName?: string;
-  bodyContainerRef?: Ref<HTMLDivElement>;
-  buttonsClassName?: string;
-  buttonsContainerRef?: ComponentProps<typeof ButtonRow>["containerRef"];
-  children: ReactNode;
-}
-
-interface DialogContainerWithButtonsProps extends DialogContainerBaseProps {
-  buttons: ComponentProps<typeof ButtonRow>["buttons"];
-}
-
-interface DialogContainerWithButtonsV2Props extends DialogContainerBaseProps {
-  buttonsV2: ComponentProps<typeof ButtonRowV2>["buttons"];
-}
-
-type DialogContainerProps =
-  | DialogContainerWithButtonsProps
-  | DialogContainerWithButtonsV2Props;
-
-export default function DialogContainer(props: DialogContainerProps) {
-  const {
-    className,
-    title,
-    titleColor,
-    titleClassName,
-    titleRef,
-    bodyContainerClassName,
-    bodyContainerRef,
-    buttonsClassName,
-    buttonsContainerRef,
-    children,
-  } = props;
-
-  const c = useC();
-
-  return (
-    <div className={classNames(className)}>
-      <div
-        ref={titleRef}
-        className={classNames(
-          `cru-dialog-container-title cru-${titleColor ?? "primary"}`,
-          titleClassName,
-        )}
-      >
-        {c(title)}
-      </div>
-      <hr className="cru-dialog-container-hr" />
-      <div
-        ref={bodyContainerRef}
-        className={classNames(
-          "cru-dialog-container-body",
-          bodyContainerClassName,
-        )}
-      >
-        {children}
-      </div>
-      <hr className="cru-dialog-container-hr" />
-      {"buttons" in props ? (
-        <ButtonRow
-          containerRef={buttonsContainerRef}
-          className={classNames(
-            "cru-dialog-container-button-row",
-            buttonsClassName,
-          )}
-          buttons={props.buttons}
-          buttonsClassName="cru-dialog-container-button"
-        />
-      ) : (
-        <ButtonRowV2
-          containerRef={buttonsContainerRef}
-          className={classNames(
-            "cru-dialog-container-button-row",
-            buttonsClassName,
-          )}
-          buttons={props.buttonsV2}
-          buttonsClassName="cru-dialog-container-button"
-        />
-      )}
-    </div>
-  );
-}
diff --git a/FrontEnd/src/views/common/dialog/FullPageDialog.css b/FrontEnd/src/views/common/dialog/FullPageDialog.css
deleted file mode 100644
index 2f1fc636..00000000
--- a/FrontEnd/src/views/common/dialog/FullPageDialog.css
+++ /dev/null
@@ -1,44 +0,0 @@
-.cru-full-page {
-  position: fixed;
-  z-index: 1030;
-  left: 0;
-  top: 0;
-  right: 0;
-  bottom: 0;
-  background-color: white;
-  padding-top: 56px;
-}
-
-.cru-full-page-top-bar {
-  height: 56px;
-  position: absolute;
-  top: 0;
-  left: 0;
-  right: 0;
-  z-index: 1;
-  background-color: var(--cru-primary-color);
-  display: flex;
-  align-items: center;
-}
-
-.cru-full-page-content-container {
-  overflow: scroll;
-}
-
-.cru-full-page-back-button {
-  color: var(--cru-primary-t-color);
-}
-
-.cru-full-page-enter {
-  transform: translate(100%, 0);
-}
-
-.cru-full-page-enter-active {
-  transform: none;
-  transition: transform 0.3s;
-}
-
-.cru-full-page-exit-active {
-  transition: transform 0.3s;
-  transform: translate(100%, 0);
-}
diff --git a/FrontEnd/src/views/common/dialog/FullPageDialog.tsx b/FrontEnd/src/views/common/dialog/FullPageDialog.tsx
deleted file mode 100644
index 6368fc0a..00000000
--- a/FrontEnd/src/views/common/dialog/FullPageDialog.tsx
+++ /dev/null
@@ -1,53 +0,0 @@
-import * as React from "react";
-import { createPortal } from "react-dom";
-import classnames from "classnames";
-import { CSSTransition } from "react-transition-group";
-
-import "./FullPageDialog.css";
-import IconButton from "../button/IconButton";
-
-export interface FullPageDialogProps {
-  show: boolean;
-  onBack: () => void;
-  contentContainerClassName?: string;
-  children: React.ReactNode;
-}
-
-const FullPageDialog: React.FC<FullPageDialogProps> = ({
-  show,
-  onBack,
-  children,
-  contentContainerClassName,
-}) => {
-  return createPortal(
-    <CSSTransition
-      mountOnEnter
-      unmountOnExit
-      in={show}
-      timeout={300}
-      classNames="cru-full-page"
-    >
-      <div className="cru-full-page">
-        <div className="cru-full-page-top-bar">
-          <IconButton
-            icon="arrow-left"
-            className="ms-3 cru-full-page-back-button"
-            onClick={onBack}
-          />
-        </div>
-        <div
-          className={classnames(
-            "cru-full-page-content-container",
-            contentContainerClassName
-          )}
-        >
-          {children}
-        </div>
-      </div>
-    </CSSTransition>,
-    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-    document.getElementById("portal")!
-  );
-};
-
-export default FullPageDialog;
diff --git a/FrontEnd/src/views/common/dialog/OperationDialog.css b/FrontEnd/src/views/common/dialog/OperationDialog.css
deleted file mode 100644
index f4b7237e..00000000
--- a/FrontEnd/src/views/common/dialog/OperationDialog.css
+++ /dev/null
@@ -1,8 +0,0 @@
-.cru-operation-dialog-prompt {
-  color: var(--cru-surface-on-color);
-}
-
-.cru-operation-dialog-input-group {
-  display: block;
-  margin: 0.5em 0;
-}
diff --git a/FrontEnd/src/views/common/dialog/OperationDialog.tsx b/FrontEnd/src/views/common/dialog/OperationDialog.tsx
deleted file mode 100644
index 4335b2b0..00000000
--- a/FrontEnd/src/views/common/dialog/OperationDialog.tsx
+++ /dev/null
@@ -1,228 +0,0 @@
-import { useState, ReactNode, ComponentProps } from "react";
-import classNames from "classnames";
-
-import { useC, Text, ThemeColor } from "../common";
-
-import {
-  useInputs,
-  InputGroup,
-  Initializer as InputInitializer,
-  InputValueDict,
-  InputErrorDict,
-} from "../input/InputGroup";
-import Dialog from "./Dialog";
-import DialogContainer from "./DialogContainer";
-
-import "./OperationDialog.css";
-
-export type { InputInitializer, InputValueDict, InputErrorDict };
-
-interface OperationDialogPromptProps {
-  message?: Text;
-  customMessage?: Text;
-  customMessageNode?: ReactNode;
-  className?: string;
-}
-
-function OperationDialogPrompt(props: OperationDialogPromptProps) {
-  const { message, customMessage, customMessageNode, className } = props;
-
-  const c = useC();
-
-  return (
-    <div className={classNames(className, "cru-operation-dialog-prompt")}>
-      {message && <p>{c(message)}</p>}
-      {customMessageNode ?? (customMessage != null ? c(customMessage) : null)}
-    </div>
-  );
-}
-
-export interface OperationDialogProps<TData> {
-  open: boolean;
-  onClose: () => void;
-
-  color?: ThemeColor;
-  inputColor?: ThemeColor;
-  title: Text;
-  inputPrompt?: Text;
-  inputPromptNode?: ReactNode;
-  successPrompt?: (data: TData) => Text;
-  successPromptNode?: (data: TData) => ReactNode;
-  failurePrompt?: (error: unknown) => Text;
-  failurePromptNode?: (error: unknown) => ReactNode;
-
-  inputs: InputInitializer;
-
-  onProcess: (inputs: InputValueDict) => Promise<TData>;
-  onSuccessAndClose?: (data: TData) => void;
-}
-
-function OperationDialog<TData>(props: OperationDialogProps<TData>) {
-  const {
-    open,
-    onClose,
-    color,
-    inputColor,
-    title,
-    inputPrompt,
-    inputPromptNode,
-    successPrompt,
-    successPromptNode,
-    failurePrompt,
-    failurePromptNode,
-    inputs,
-    onProcess,
-    onSuccessAndClose,
-  } = props;
-
-  if (process.env.NODE_ENV === "development") {
-    if (inputPrompt && inputPromptNode) {
-      console.log("InputPrompt and inputPromptNode are both set.");
-    }
-    if (successPrompt && successPromptNode) {
-      console.log("SuccessPrompt and successPromptNode are both set.");
-    }
-    if (failurePrompt && failurePromptNode) {
-      console.log("FailurePrompt and failurePromptNode are both set.");
-    }
-  }
-
-  type Step =
-    | { type: "input" }
-    | { type: "process" }
-    | {
-        type: "success";
-        data: TData;
-      }
-    | {
-        type: "failure";
-        data: unknown;
-      };
-
-  const [step, setStep] = useState<Step>({ type: "input" });
-
-  const { inputGroupProps, hasErrorAndDirty, setAllDisabled, confirm } =
-    useInputs({
-      init: inputs,
-    });
-
-  function close() {
-    if (step.type !== "process") {
-      onClose();
-      if (step.type === "success" && onSuccessAndClose) {
-        onSuccessAndClose?.(step.data);
-      }
-    } else {
-      console.log("Attempt to close modal dialog when processing.");
-    }
-  }
-
-  function onConfirm() {
-    const result = confirm();
-    if (result.type === "ok") {
-      setStep({ type: "process" });
-      setAllDisabled(true);
-      onProcess(result.values).then(
-        (d) => {
-          setStep({
-            type: "success",
-            data: d,
-          });
-        },
-        (e: unknown) => {
-          setStep({
-            type: "failure",
-            data: e,
-          });
-        },
-      );
-    }
-  }
-
-  let body: ReactNode;
-  let buttons: ComponentProps<typeof DialogContainer>["buttons"];
-
-  if (step.type === "input" || step.type === "process") {
-    const isProcessing = step.type === "process";
-
-    body = (
-      <div>
-        <OperationDialogPrompt
-          customMessage={inputPrompt}
-          customMessageNode={inputPromptNode}
-        />
-        <InputGroup
-          containerClassName="cru-operation-dialog-input-group"
-          color={inputColor ?? "primary"}
-          {...inputGroupProps}
-        />
-      </div>
-    );
-    buttons = [
-      {
-        key: "cancel",
-        type: "normal",
-        props: {
-          text: "operationDialog.cancel",
-          color: "secondary",
-          outline: true,
-          onClick: close,
-          disabled: isProcessing,
-        },
-      },
-      {
-        key: "confirm",
-        type: "loading",
-        props: {
-          text: "operationDialog.confirm",
-          color,
-          loading: isProcessing,
-          disabled: hasErrorAndDirty,
-          onClick: onConfirm,
-        },
-      },
-    ];
-  } else {
-    const result = step;
-
-    const promptProps: OperationDialogPromptProps =
-      result.type === "success"
-        ? {
-            message: "operationDialog.success",
-            customMessage: successPrompt?.(result.data),
-            customMessageNode: successPromptNode?.(result.data),
-          }
-        : {
-            message: "operationDialog.error",
-            customMessage: failurePrompt?.(result.data),
-            customMessageNode: failurePromptNode?.(result.data),
-          };
-    body = (
-      <div>
-        <OperationDialogPrompt {...promptProps} />
-      </div>
-    );
-
-    buttons = [
-      {
-        key: "ok",
-        type: "normal",
-        props: {
-          text: "operationDialog.ok",
-          color: "primary",
-          onClick: close,
-        },
-      },
-    ];
-  }
-
-  return (
-    <Dialog open={open} onClose={close}>
-      <DialogContainer title={title} titleColor={color} buttons={buttons}>
-        {body}
-      </DialogContainer>
-    </Dialog>
-  );
-}
-
-export default OperationDialog;
diff --git a/FrontEnd/src/views/common/dialog/index.ts b/FrontEnd/src/views/common/dialog/index.ts
deleted file mode 100644
index 59f15791..00000000
--- a/FrontEnd/src/views/common/dialog/index.ts
+++ /dev/null
@@ -1,64 +0,0 @@
-import { useState } from "react";
-
-export { default as Dialog } from "./Dialog";
-export { default as FullPageDialog } from "./FullPageDialog";
-export { default as OperationDialog } from "./OperationDialog";
-export { default as ConfirmDialog } from "./ConfirmDialog";
-
-type DialogMap<D extends string, V> = {
-  [K in D]: V;
-};
-
-type DialogKeyMap<D extends string> = DialogMap<D, number>;
-
-type DialogPropsMap<D extends string> = DialogMap<
-  D,
-  { key: number | string; open: boolean; onClose: () => void }
->;
-
-export function useDialog<D extends string>(
-  dialogs: D[],
-  options?: {
-    initDialog?: D | null;
-    onClose?: {
-      [K in D]?: () => void;
-    };
-  },
-): {
-  dialog: D | null;
-  switchDialog: (newDialog: D | null) => void;
-  dialogPropsMap: DialogPropsMap<D>;
-  createDialogSwitch: (newDialog: D | null) => () => void;
-} {
-  const [dialog, setDialog] = useState<D | null>(options?.initDialog ?? null);
-
-  const [dialogKeys, setDialogKeys] = useState<DialogKeyMap<D>>(
-    () => Object.fromEntries(dialogs.map((d) => [d, 0])) as DialogKeyMap<D>,
-  );
-
-  const switchDialog = (newDialog: D | null) => {
-    if (dialog !== null) {
-      setDialogKeys({ ...dialogKeys, [dialog]: dialogKeys[dialog] + 1 });
-    }
-    setDialog(newDialog);
-  };
-
-  return {
-    dialog,
-    switchDialog,
-    dialogPropsMap: Object.fromEntries(
-      dialogs.map((d) => [
-        d,
-        {
-          key: `${d}-${dialogKeys[d]}`,
-          open: dialog === d,
-          onClose: () => {
-            switchDialog(null);
-            options?.onClose?.[d]?.();
-          },
-        },
-      ]),
-    ) as DialogPropsMap<D>,
-    createDialogSwitch: (newDialog: D | null) => () => switchDialog(newDialog),
-  };
-}
diff --git a/FrontEnd/src/views/common/hooks.ts b/FrontEnd/src/views/common/hooks.ts
deleted file mode 100644
index c1fa5774..00000000
--- a/FrontEnd/src/views/common/hooks.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-// TODO: Migrate hooks
-
-export {
-  useIsSmallScreen,
-  useClickOutside,
-  useScrollToBottom,
-} from "@/utilities/hooks";
-
-import { useMediaQuery } from "react-responsive";
-import { breakpoints } from "./breakpoints";
-
-export function useMobile(): boolean {
-  return useMediaQuery({ maxWidth: breakpoints.sm });
-}
diff --git a/FrontEnd/src/views/common/index.css b/FrontEnd/src/views/common/index.css
deleted file mode 100644
index a8f5e9a5..00000000
--- a/FrontEnd/src/views/common/index.css
+++ /dev/null
@@ -1,100 +0,0 @@
-@import "./theme.css";
-
-* {
-  box-sizing: border-box;
-  margin-inline: 0;
-  margin-block: 0;
-}
-
-body {
-  font-family: var(--cru-default-font-family);
-  background: var(--cru-body-background-color);
-  color: var(--cru-text-primary-color);
-  line-height: 1.2;
-}
-
-.cru-page {
-  padding: var(--cru-page-padding);
-}
-
-.cru-page-no-top-padding {
-  padding-top: 0;
-}
-
-.cru-text-center {
-  text-align: center;
-}
-
-.cru-text-end {
-  text-align: end;
-}
-
-.cru-float-left {
-  float: left;
-}
-
-.cru-float-right {
-  float: right;
-}
-
-.cru-align-text-bottom {
-  vertical-align: text-bottom;
-}
-
-.cru-align-middle {
-  vertical-align: middle;
-}
-
-.cru-clearfix::after {
-  clear: both;
-}
-
-.cru-fill-parent {
-  width: 100%;
-  height: 100%;
-}
-
-.cru-avatar {
-  width: 60px;
-  height: 60px;
-}
-
-.cru-avatar.large {
-  width: 100px;
-  height: 100px;
-}
-
-.cru-avatar.small {
-  width: 40px;
-  height: 40px;
-}
-
-.cru-round {
-  border-radius: 50%;
-}
-
-.cru-tab-pages-action-area {
-  display: flex;
-  align-items: center;
-}
-
-.alert-container {
-  position: fixed;
-  z-index: 1070;
-}
-
-@media (min-width: 576px) {
-  .alert-container {
-    bottom: 0;
-    right: 0;
-  }
-}
-
-@media (max-width: 575.98px) {
-  .alert-container {
-    bottom: 0;
-    right: 0;
-    left: 0;
-    text-align: center;
-  }
-}
\ No newline at end of file
diff --git a/FrontEnd/src/views/common/input/InputGroup.css b/FrontEnd/src/views/common/input/InputGroup.css
deleted file mode 100644
index 7e905b1e..00000000
--- a/FrontEnd/src/views/common/input/InputGroup.css
+++ /dev/null
@@ -1,54 +0,0 @@
-.cru-input-group {
-  display: block;
-}
-
-.cru-input-container {
-  margin: 0.4em 0;
-}
-
-.cru-input-label {
-  display: block;
-  color: var(--cru-clickable-normal-color);
-  font-size: 0.9em;
-  margin-bottom: 0.3em;
-}
-
-.cru-input-label-inline {
-  margin-inline-start: 0.5em;
-}
-
-.cru-input-type-text input {
-  appearance: none;
-  display: block;
-  border: 1px solid;
-  /* color: var(--cru-surface-on-color); */
-  /* background-color: var(--cru-surface-color); */
-  margin: 0;
-  font-size: 1em;
-  padding: 0.2em;
-}
-
-.cru-input-type-text input:hover {
-  border-color: var(--cru-clickable-hover-color);
-}
-
-.cru-input-type-text input:focus {
-  border-color: var(--cru-clickable-focus-color);
-}
-
-.cru-input-type-text input:disabled {
-  border-color: var(--cru-clickable-disabled-color);
-}
-
-.cru-input-error {
-  display: block;
-  font-size: 0.8em;
-  color: var(--cru-danger-color);
-  margin-top: 0.4em;
-}
-
-.cru-input-helper {
-  display: block;
-  font-size: 0.8em;
-  color: var(--cru-primary-color);
-}
\ No newline at end of file
diff --git a/FrontEnd/src/views/common/input/InputGroup.tsx b/FrontEnd/src/views/common/input/InputGroup.tsx
deleted file mode 100644
index d95bb29e..00000000
--- a/FrontEnd/src/views/common/input/InputGroup.tsx
+++ /dev/null
@@ -1,461 +0,0 @@
-/**
- * Some notes for InputGroup:
- * This is one of the most complicated components in this project.
- * Probably because the feature is complex and involved user inputs.
- *
- * I hope it contains following features:
- * - Input features
- *   - Supports a wide range of input types.
- *   - Validator to validate user inputs.
- *   - Can set initial values.
- *   - Dirty, aka, has user touched this input.
- * - Developer friendly
- *   - Easy to use APIs.
- *   - Type check as much as possible.
- * - UI
- *   - Configurable appearance.
- *   - Can display helper and error messages.
- * - Easy to extend, like new input types.
- *
- * So here is some design decisions:
- * Inputs are identified by its _key_.
- * `InputGroup` component takes care of only UI and no logic.
- * `useInputs` hook takes care of logic and generate props for `InputGroup`.
- */
-
-import { useState, Ref, useId } from "react";
-import classNames from "classnames";
-
-import { useC, Text, ThemeColor } from "../common";
-
-import "./InputGroup.css";
-
-export interface InputBase {
-  key: string;
-  label: Text;
-  helper?: Text;
-  disabled?: boolean;
-  error?: Text;
-}
-
-export interface TextInput extends InputBase {
-  type: "text";
-  value: string;
-  password?: boolean;
-}
-
-export interface BoolInput extends InputBase {
-  type: "bool";
-  value: boolean;
-}
-
-export interface SelectInputOption {
-  value: string;
-  label: Text;
-  icon?: string;
-}
-
-export interface SelectInput extends InputBase {
-  type: "select";
-  value: string;
-  options: SelectInputOption[];
-}
-
-export type Input = TextInput | BoolInput | SelectInput;
-
-export type InputValue = Input["value"];
-
-export type InputValueDict = Record<string, InputValue>;
-export type InputErrorDict = Record<string, Text>;
-export type InputDisabledDict = Record<string, boolean>;
-export type InputDirtyDict = Record<string, boolean>;
-
-export type GeneralInputErrorDict =
-  | {
-      [key: string]: Text | null | undefined;
-    }
-  | null
-  | undefined;
-
-type MakeInputInfo<I extends Input> = Omit<I, "value" | "error" | "disabled">;
-
-export type InputInfo = {
-  [I in Input as I["type"]]: MakeInputInfo<I>;
-}[Input["type"]];
-
-export type Validator = (
-  values: InputValueDict,
-  inputs: InputInfo[],
-) => GeneralInputErrorDict;
-
-export type InputScheme = {
-  inputs: InputInfo[];
-  validator?: Validator;
-};
-
-export type InputData = {
-  values: InputValueDict;
-  errors: InputErrorDict;
-  disabled: InputDisabledDict;
-  dirties: InputDirtyDict;
-};
-
-export type State = {
-  scheme: InputScheme;
-  data: InputData;
-};
-
-export type DataInitialization = {
-  values?: InputValueDict;
-  errors?: GeneralInputErrorDict;
-  disabled?: InputDisabledDict;
-  dirties?: InputDirtyDict;
-};
-
-export type Initialization = {
-  scheme: InputScheme;
-  dataInit?: DataInitialization;
-};
-
-export type GeneralInitialization = Initialization | InputScheme | InputInfo[];
-
-export type Initializer = GeneralInitialization | (() => GeneralInitialization);
-
-export interface InputGroupProps {
-  color?: ThemeColor;
-  containerClassName?: string;
-  containerRef?: Ref<HTMLDivElement>;
-
-  inputs: Input[];
-  onChange: (index: number, value: Input["value"]) => void;
-}
-
-function cleanObject<V>(o: Record<string, V>): Record<string, NonNullable<V>> {
-  const result = { ...o };
-  for (const key of Object.keys(result)) {
-    if (result[key] == null) {
-      delete result[key];
-    }
-  }
-  return result as never;
-}
-
-export type ConfirmResult =
-  | {
-      type: "ok";
-      values: InputValueDict;
-    }
-  | {
-      type: "error";
-      errors: InputErrorDict;
-    };
-
-function validate(
-  validator: Validator | null | undefined,
-  values: InputValueDict,
-  inputs: InputInfo[],
-): InputErrorDict {
-  return cleanObject(validator?.(values, inputs) ?? {});
-}
-
-export function useInputs(options: { init: Initializer }): {
-  inputGroupProps: InputGroupProps;
-  hasError: boolean;
-  hasErrorAndDirty: boolean;
-  confirm: () => ConfirmResult;
-  setAllDisabled: (disabled: boolean) => void;
-} {
-  function initializeValue(
-    input: InputInfo,
-    value?: InputValue | null,
-  ): InputValue {
-    if (input.type === "text") {
-      return value ?? "";
-    } else if (input.type === "bool") {
-      return value ?? false;
-    } else if (input.type === "select") {
-      return value ?? input.options[0].value;
-    }
-    throw new Error("Unknown input type");
-  }
-
-  function initialize(generalInitialization: GeneralInitialization): State {
-    const initialization: Initialization = Array.isArray(generalInitialization)
-      ? { scheme: { inputs: generalInitialization } }
-      : "scheme" in generalInitialization
-      ? generalInitialization
-      : { scheme: generalInitialization };
-
-    const { scheme, dataInit } = initialization;
-    const { inputs, validator } = scheme;
-    const keys = inputs.map((input) => input.key);
-
-    if (process.env.NODE_ENV === "development") {
-      const checkKeys = (dict: Record<string, unknown> | undefined) => {
-        if (dict != null) {
-          for (const key of Object.keys(dict)) {
-            if (!keys.includes(key)) {
-              console.warn("");
-            }
-          }
-        }
-      };
-
-      checkKeys(dataInit?.values);
-      checkKeys(dataInit?.errors ?? {});
-      checkKeys(dataInit?.disabled);
-      checkKeys(dataInit?.dirties);
-    }
-
-    function clean<V>(
-      dict: Record<string, V> | null | undefined,
-    ): Record<string, NonNullable<V>> {
-      return dict != null ? cleanObject(dict) : {};
-    }
-
-    const values: InputValueDict = {};
-    const disabled: InputDisabledDict = clean(dataInit?.disabled);
-    const dirties: InputDirtyDict = clean(dataInit?.dirties);
-    const isErrorSet = dataInit?.errors != null;
-    let errors: InputErrorDict = clean(dataInit?.errors);
-
-    for (let i = 0; i < inputs.length; i++) {
-      const input = inputs[i];
-      const { key } = input;
-
-      values[key] = initializeValue(input, dataInit?.values?.[key]);
-    }
-
-    if (isErrorSet) {
-      if (process.env.NODE_ENV === "development") {
-        console.log(
-          "You explicitly set errors (not undefined) in initializer, so validator won't run.",
-        );
-      }
-    } else {
-      errors = validate(validator, values, inputs);
-    }
-
-    return {
-      scheme,
-      data: {
-        values,
-        errors,
-        disabled,
-        dirties,
-      },
-    };
-  }
-
-  const { init } = options;
-  const initializer = typeof init === "function" ? init : () => init;
-
-  const [state, setState] = useState<State>(() => initialize(initializer()));
-
-  const { scheme, data } = state;
-  const { validator } = scheme;
-
-  function createAllBooleanDict(value: boolean): Record<string, boolean> {
-    const result: InputDirtyDict = {};
-    for (const key of scheme.inputs.map((input) => input.key)) {
-      result[key] = value;
-    }
-    return result;
-  }
-
-  const createAllDirties = () => createAllBooleanDict(true);
-
-  const componentInputs: Input[] = [];
-
-  for (let i = 0; i < scheme.inputs.length; i++) {
-    const input = scheme.inputs[i];
-    const value = data.values[input.key];
-    const error = data.errors[input.key];
-    const disabled = data.disabled[input.key] ?? false;
-    const dirty = data.dirties[input.key] ?? false;
-    const componentInput: Input = {
-      ...input,
-      value: value as never,
-      disabled,
-      error: dirty ? error : undefined,
-    };
-    componentInputs.push(componentInput);
-  }
-
-  const hasError = Object.keys(data.errors).length > 0;
-  const hasDirty = Object.keys(data.dirties).some((key) => data.dirties[key]);
-
-  return {
-    inputGroupProps: {
-      inputs: componentInputs,
-      onChange: (index, value) => {
-        const input = scheme.inputs[index];
-        const { key } = input;
-        const newValues = { ...data.values, [key]: value };
-        const newDirties = { ...data.dirties, [key]: true };
-        const newErrors = validate(validator, newValues, scheme.inputs);
-        setState({
-          scheme,
-          data: {
-            ...data,
-            values: newValues,
-            errors: newErrors,
-            dirties: newDirties,
-          },
-        });
-      },
-    },
-    hasError,
-    hasErrorAndDirty: hasError && hasDirty,
-    confirm() {
-      const newDirties = createAllDirties();
-      const newErrors = validate(validator, data.values, scheme.inputs);
-
-      setState({
-        scheme,
-        data: {
-          ...data,
-          dirties: newDirties,
-          errors: newErrors,
-        },
-      });
-
-      if (Object.keys(newErrors).length !== 0) {
-        return {
-          type: "error",
-          errors: newErrors,
-        };
-      } else {
-        return {
-          type: "ok",
-          values: data.values,
-        };
-      }
-    },
-    setAllDisabled(disabled: boolean) {
-      setState({
-        scheme,
-        data: {
-          ...data,
-          disabled: createAllBooleanDict(disabled),
-        },
-      });
-    },
-  };
-}
-
-export function InputGroup({
-  color,
-  inputs,
-  onChange,
-  containerRef,
-  containerClassName,
-}: InputGroupProps) {
-  const c = useC();
-
-  const id = useId();
-
-  return (
-    <div
-      ref={containerRef}
-      className={classNames(
-        "cru-input-group",
-        `cru-clickable-${color ?? "primary"}`,
-        containerClassName,
-      )}
-    >
-      {inputs.map((item, index) => {
-        const { key, type, value, label, error, helper, disabled } = item;
-
-        const getContainerClassName = (
-          ...additionalClassNames: classNames.ArgumentArray
-        ) =>
-          classNames(
-            `cru-input-container cru-input-type-${type}`,
-            error && "error",
-            ...additionalClassNames,
-          );
-
-        const changeValue = (value: InputValue) => {
-          onChange(index, value);
-        };
-
-        const inputId = `${id}-${key}`;
-
-        if (type === "text") {
-          const { password } = item;
-          return (
-            <div
-              key={key}
-              className={getContainerClassName(password && "password")}
-            >
-              {label && (
-                <label className="cru-input-label" htmlFor={inputId}>
-                  {c(label)}
-                </label>
-              )}
-              <input
-                id={inputId}
-                type={password ? "password" : "text"}
-                value={value}
-                onChange={(event) => {
-                  const v = event.target.value;
-                  changeValue(v);
-                }}
-                disabled={disabled}
-              />
-              {error && <div className="cru-input-error">{c(error)}</div>}
-              {helper && <div className="cru-input-helper">{c(helper)}</div>}
-            </div>
-          );
-        } else if (type === "bool") {
-          return (
-            <div key={key} className={getContainerClassName()}>
-              <input
-                id={inputId}
-                type="checkbox"
-                checked={value}
-                onChange={(event) => {
-                  const v = event.currentTarget.checked;
-                  changeValue(v);
-                }}
-                disabled={disabled}
-              />
-              <label className="cru-input-label-inline" htmlFor={inputId}>
-                {c(label)}
-              </label>
-              {error && <div className="cru-input-error">{c(error)}</div>}
-              {helper && <div className="cru-input-helper">{c(helper)}</div>}
-            </div>
-          );
-        } else if (type === "select") {
-          return (
-            <div key={key} className={getContainerClassName()}>
-              <label className="cru-input-label" htmlFor={inputId}>
-                {c(label)}
-              </label>
-              <select
-                id={inputId}
-                value={value}
-                onChange={(event) => {
-                  const e = event.target.value;
-                  changeValue(e);
-                }}
-                disabled={disabled}
-              >
-                {item.options.map((option) => {
-                  return (
-                    <option value={option.value} key={option.value}>
-                      {option.icon}
-                      {c(option.label)}
-                    </option>
-                  );
-                })}
-              </select>
-            </div>
-          );
-        }
-      })}
-    </div>
-  );
-}
diff --git a/FrontEnd/src/views/common/list/ListContainer.css b/FrontEnd/src/views/common/list/ListContainer.css
deleted file mode 100644
index 53781834..00000000
--- a/FrontEnd/src/views/common/list/ListContainer.css
+++ /dev/null
@@ -1,4 +0,0 @@
-.cru-list-container {
-  border: 1px solid var(--cru-clickable-primary-normal-color);
-  border-radius: 5px;
-}
diff --git a/FrontEnd/src/views/common/list/ListContainer.tsx b/FrontEnd/src/views/common/list/ListContainer.tsx
deleted file mode 100644
index aa00d12c..00000000
--- a/FrontEnd/src/views/common/list/ListContainer.tsx
+++ /dev/null
@@ -1,23 +0,0 @@
-import { ComponentPropsWithoutRef, forwardRef, Ref } from "react";
-import classNames from "classnames";
-
-import "./ListContainer.css"
-
-function _ListContainer(
-  { className, children, ...otherProps }: ComponentPropsWithoutRef<"div">,
-  ref: Ref<HTMLDivElement>,
-) {
-  return (
-    <div
-      ref={ref}
-      className={classNames("cru-list-container", className)}
-      {...otherProps}
-    >
-      {children}
-    </div>
-  );
-}
-
-const ListContainer = forwardRef(_ListContainer);
-
-export default ListContainer;
diff --git a/FrontEnd/src/views/common/list/ListItemContainer.css b/FrontEnd/src/views/common/list/ListItemContainer.css
deleted file mode 100644
index 8d7afa9f..00000000
--- a/FrontEnd/src/views/common/list/ListItemContainer.css
+++ /dev/null
@@ -1,3 +0,0 @@
-.cru-list-item-container {
-  border: 1px solid var(--cru-clickable-primary-normal-color);
-}
diff --git a/FrontEnd/src/views/common/list/ListItemContainer.tsx b/FrontEnd/src/views/common/list/ListItemContainer.tsx
deleted file mode 100644
index 315cbd6e..00000000
--- a/FrontEnd/src/views/common/list/ListItemContainer.tsx
+++ /dev/null
@@ -1,23 +0,0 @@
-import { ComponentPropsWithoutRef, forwardRef, Ref } from "react";
-import classNames from "classnames";
-
-import "./ListItemContainer.css";
-
-function _ListItemContainer(
-  { className, children, ...otherProps }: ComponentPropsWithoutRef<"div">,
-  ref: Ref<HTMLDivElement>,
-) {
-  return (
-    <div
-      ref={ref}
-      className={classNames("cru-list-item-container", className)}
-      {...otherProps}
-    >
-      {children}
-    </div>
-  );
-}
-
-const ListItemContainer = forwardRef(_ListItemContainer);
-
-export default ListItemContainer;
diff --git a/FrontEnd/src/views/common/list/index.ts b/FrontEnd/src/views/common/list/index.ts
deleted file mode 100644
index e183f7da..00000000
--- a/FrontEnd/src/views/common/list/index.ts
+++ /dev/null
@@ -1,4 +0,0 @@
-import ListContainer from "./ListContainer";
-import ListItemContainer from "./ListItemContainer";
-
-export { ListContainer, ListItemContainer };
diff --git a/FrontEnd/src/views/common/menu/Menu.css b/FrontEnd/src/views/common/menu/Menu.css
deleted file mode 100644
index 75734533..00000000
--- a/FrontEnd/src/views/common/menu/Menu.css
+++ /dev/null
@@ -1,36 +0,0 @@
-.cru-menu {
-  min-width: 200px;
-}
-
-.cru-menu-item {
-  display: block;
-  font-size: 1em;
-  width: 100%;
-  padding: 0.5em 1.5em;
-  transition: all 0.5s;
-  color: var(--cru-clickable-normal-color);
-  background-color: var(--cru-clickable-grayscale-normal-color);
-  border: none;
-  cursor: pointer;
-}
-
-.cru-menu-item:hover {
-  background-color: var(--cru-clickable-grayscale-hover-color);
-}
-
-.cru-menu-item:focus {
-  background-color: var(--cru-clickable-grayscale-focus-color);
-}
-
-.cru-menu-item:active {
-  background-color: var(--cru-clickable-grayscale-active-color);
-}
-
-.cru-menu-item-icon {
-  margin-right: 1em;
-}
-
-.cru-menu-divider {
-  border-width: 0;
-  border-top: 1px solid var(--cru-primary-color);
-}
\ No newline at end of file
diff --git a/FrontEnd/src/views/common/menu/Menu.tsx b/FrontEnd/src/views/common/menu/Menu.tsx
deleted file mode 100644
index e8099c76..00000000
--- a/FrontEnd/src/views/common/menu/Menu.tsx
+++ /dev/null
@@ -1,62 +0,0 @@
-import { CSSProperties } from "react";
-import classNames from "classnames";
-
-import { useC, Text, ThemeColor } from "../common";
-
-import "./Menu.css";
-import Icon from "../Icon";
-
-export type MenuItem =
-  | {
-      type: "divider";
-    }
-  | {
-      type: "button";
-      text: Text;
-      icon?: string;
-      color?: ThemeColor;
-      onClick: () => void;
-    };
-
-export type MenuItems = MenuItem[];
-
-export type MenuProps = {
-  items: MenuItems;
-  onItemClicked?: () => void;
-  className?: string;
-  style?: CSSProperties;
-};
-
-export default function Menu({
-  items,
-  onItemClicked,
-  className,
-  style,
-}: MenuProps) {
-  const c = useC();
-
-  return (
-    <div className={classNames("cru-menu", className)} style={style}>
-      {items.map((item, index) => {
-        if (item.type === "divider") {
-          return <hr key={index} className="cru-menu-divider" />;
-        } else {
-          const { text, color, icon, onClick } = item;
-          return (
-            <button
-              key={index}
-              className={`cru-menu-item cru-clickable-${color ?? "primary"}`}
-              onClick={() => {
-                onClick();
-                onItemClicked?.();
-              }}
-            >
-              {icon != null && <Icon color={color} icon={icon} />}
-              {c(text)}
-            </button>
-          );
-        }
-      })}
-    </div>
-  );
-}
diff --git a/FrontEnd/src/views/common/menu/PopupMenu.css b/FrontEnd/src/views/common/menu/PopupMenu.css
deleted file mode 100644
index 149e0699..00000000
--- a/FrontEnd/src/views/common/menu/PopupMenu.css
+++ /dev/null
@@ -1,7 +0,0 @@
-.cru-popup-menu-menu-container {
-  z-index: 1040;
-  border-radius: 3px;
-  border: var(--cru-clickable-normal-color) 1.5px solid;
-  background-color: var(--cru-background-color);
-  overflow: hidden;
-}
diff --git a/FrontEnd/src/views/common/menu/PopupMenu.tsx b/FrontEnd/src/views/common/menu/PopupMenu.tsx
deleted file mode 100644
index 5c8d5e98..00000000
--- a/FrontEnd/src/views/common/menu/PopupMenu.tsx
+++ /dev/null
@@ -1,73 +0,0 @@
-import { useState, CSSProperties, ReactNode } from "react";
-import classNames from "classnames";
-import { createPortal } from "react-dom";
-import { usePopper } from "react-popper";
-
-import { useClickOutside } from "@/utilities/hooks";
-
-import Menu, { MenuItems } from "./Menu";
-
-import { ThemeColor } from "../common";
-
-import "./PopupMenu.css";
-
-export interface PopupMenuProps {
-  color?: ThemeColor;
-  items: MenuItems;
-  children?: ReactNode;
-  containerClassName?: string;
-  containerStyle?: CSSProperties;
-}
-
-export default function PopupMenu({
-  color,
-  items,
-  children,
-  containerClassName,
-  containerStyle,
-}: PopupMenuProps) {
-  const [show, setShow] = useState<boolean>(false);
-
-  const [referenceElement, setReferenceElement] =
-    useState<HTMLDivElement | null>(null);
-  const [popperElement, setPopperElement] = useState<HTMLDivElement | null>(
-    null,
-  );
-  const { styles, attributes } = usePopper(referenceElement, popperElement);
-
-  useClickOutside(popperElement, () => setShow(false), true);
-
-  return (
-    <div
-      ref={setReferenceElement}
-      className={classNames(
-        "cru-popup-menu-trigger-container",
-        containerClassName,
-      )}
-      style={containerStyle}
-      onClick={() => setShow(true)}
-    >
-      {children}
-      {show &&
-        createPortal(
-          <div
-            ref={setPopperElement}
-            className={`cru-popup-menu-menu-container cru-clickable-${
-              color ?? "primary"
-            }`}
-            style={styles.popper}
-            {...attributes.popper}
-          >
-            <Menu
-              items={items}
-              onItemClicked={() => {
-                setShow(false);
-              }}
-            />
-          </div>,
-          // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-          document.getElementById("portal")!,
-        )}
-    </div>
-  );
-}
diff --git a/FrontEnd/src/views/common/tab/TabPages.tsx b/FrontEnd/src/views/common/tab/TabPages.tsx
deleted file mode 100644
index cdb988e0..00000000
--- a/FrontEnd/src/views/common/tab/TabPages.tsx
+++ /dev/null
@@ -1,71 +0,0 @@
-import * as React from "react";
-
-import { I18nText, UiLogicError } from "@/common";
-
-import Tabs from "./Tabs";
-
-export interface TabPage {
-  name: string;
-  text: I18nText;
-  page: React.ReactNode;
-}
-
-export interface TabPagesProps {
-  pages: TabPage[];
-  actions?: React.ReactNode;
-  dense?: boolean;
-  className?: string;
-  style?: React.CSSProperties;
-  navClassName?: string;
-  navStyle?: React.CSSProperties;
-  pageContainerClassName?: string;
-  pageContainerStyle?: React.CSSProperties;
-}
-
-const TabPages: React.FC<TabPagesProps> = ({
-  pages,
-  actions,
-  dense,
-  className,
-  style,
-  navClassName,
-  navStyle,
-  pageContainerClassName,
-  pageContainerStyle,
-}) => {
-  if (pages.length === 0) {
-    throw new UiLogicError("Page list can't be empty.");
-  }
-
-  const [tab, setTab] = React.useState<string>(pages[0].name);
-
-  const currentPage = pages.find((p) => p.name === tab);
-
-  if (currentPage == null) {
-    throw new UiLogicError("Current tab value is bad.");
-  }
-
-  return (
-    <div className={className} style={style}>
-      <Tabs
-        tabs={pages.map((page) => ({
-          name: page.name,
-          text: page.text,
-          onClick: () => {
-            setTab(page.name);
-          },
-        }))}
-        dense={dense}
-        activeTabName={tab}
-        className={navClassName}
-        style={navStyle}
-        actions={actions}
-      />
-      <div className={pageContainerClassName} style={pageContainerStyle}>
-        {currentPage.page}
-      </div>
-    </div>
-  );
-};
-
-export default TabPages;
diff --git a/FrontEnd/src/views/common/tab/Tabs.css b/FrontEnd/src/views/common/tab/Tabs.css
deleted file mode 100644
index 395d16a7..00000000
--- a/FrontEnd/src/views/common/tab/Tabs.css
+++ /dev/null
@@ -1,33 +0,0 @@
-.cru-nav {
-  border-bottom: var(--cru-primary-color) 1px solid;
-  display: flex;
-}
-
-.cru-nav-item {
-  color: var(--cru-primary-color);
-  border: var(--cru-background-2-color) 0.5px solid;
-  border-bottom: none;
-  padding: 0.5em 1.5em;
-  border-top-left-radius: 5px;
-  border-top-right-radius: 5px;
-  transition: all 0.5s;
-  cursor: pointer;
-}
-
-.cru-nav.dense .cru-nav-item {
-  padding: 0.2em 1em;
-}
-
-.cru-nav-item:hover {
-  background-color: var(--cru-background-1-color);
-}
-
-.cru-nav-item.active {
-  color: var(--cru-primary-t-color);
-  background-color: var(--cru-primary-color);
-  border-color: var(--cru-primary-color);
-}
-
-.cru-nav-action-area {
-  margin-left: auto;
-}
diff --git a/FrontEnd/src/views/common/tab/Tabs.tsx b/FrontEnd/src/views/common/tab/Tabs.tsx
deleted file mode 100644
index 3e3ef6fa..00000000
--- a/FrontEnd/src/views/common/tab/Tabs.tsx
+++ /dev/null
@@ -1,62 +0,0 @@
-import * as React from "react";
-import { Link } from "react-router-dom";
-import { useTranslation } from "react-i18next";
-import classnames from "classnames";
-
-import { convertI18nText, I18nText } from "@/common";
-
-import "./Tabs.css";
-
-export interface Tab {
-  name: string;
-  text: I18nText;
-  link?: string;
-  onClick?: () => void;
-}
-
-export interface TabsProps {
-  activeTabName?: string;
-  actions?: React.ReactNode;
-  dense?: boolean;
-  tabs: Tab[];
-  className?: string;
-  style?: React.CSSProperties;
-}
-
-export default function Tabs(props: TabsProps): React.ReactElement | null {
-  const { tabs, activeTabName, className, style, dense, actions } = props;
-
-  const { t } = useTranslation();
-
-  return (
-    <div
-      className={classnames("cru-nav", dense && "dense", className)}
-      style={style}
-    >
-      {tabs.map((tab) => {
-        const active = activeTabName === tab.name;
-        const className = classnames("cru-nav-item", active && "active");
-
-        if (tab.link != null) {
-          return (
-            <Link
-              key={tab.name}
-              to={tab.link}
-              onClick={tab.onClick}
-              className={className}
-            >
-              {convertI18nText(tab.text, t)}
-            </Link>
-          );
-        } else {
-          return (
-            <span key={tab.name} onClick={tab.onClick} className={className}>
-              {convertI18nText(tab.text, t)}
-            </span>
-          );
-        }
-      })}
-      <div className="cru-nav-action-area">{actions}</div>
-    </div>
-  );
-}
diff --git a/FrontEnd/src/views/common/theme-color.css b/FrontEnd/src/views/common/theme-color.css
deleted file mode 100644
index 24a7e267..00000000
--- a/FrontEnd/src/views/common/theme-color.css
+++ /dev/null
@@ -1,173 +0,0 @@
-/* Generated by theme-generator.ts */
-
-:root {
-  --cru-primary-color: hsl(210 100% 40%);
-  --cru-primary-1-color: hsl(210 100% 37%);
-  --cru-primary-2-color: hsl(210 100% 34%);
-  --cru-primary-on-color: hsl(210 100% 100%);
-  --cru-primary-container-color: hsl(210 100% 90%);
-  --cru-primary-container-1-color: hsl(210 100% 80%);
-  --cru-primary-container-2-color: hsl(210 100% 70%);
-  --cru-primary-on-container-color: hsl(210 100% 10%);
-  --cru-secondary-color: hsl(40 100% 40%);
-  --cru-secondary-1-color: hsl(40 100% 37%);
-  --cru-secondary-2-color: hsl(40 100% 34%);
-  --cru-secondary-on-color: hsl(40 100% 100%);
-  --cru-secondary-container-color: hsl(40 100% 90%);
-  --cru-secondary-container-1-color: hsl(40 100% 80%);
-  --cru-secondary-container-2-color: hsl(40 100% 70%);
-  --cru-secondary-on-container-color: hsl(40 100% 10%);
-  --cru-tertiary-color: hsl(160 100% 40%);
-  --cru-tertiary-1-color: hsl(160 100% 37%);
-  --cru-tertiary-2-color: hsl(160 100% 34%);
-  --cru-tertiary-on-color: hsl(160 100% 100%);
-  --cru-tertiary-container-color: hsl(160 100% 90%);
-  --cru-tertiary-container-1-color: hsl(160 100% 80%);
-  --cru-tertiary-container-2-color: hsl(160 100% 70%);
-  --cru-tertiary-on-container-color: hsl(160 100% 10%);
-  --cru-danger-color: hsl(0 100% 40%);
-  --cru-danger-1-color: hsl(0 100% 37%);
-  --cru-danger-2-color: hsl(0 100% 34%);
-  --cru-danger-on-color: hsl(0 100% 100%);
-  --cru-danger-container-color: hsl(0 100% 90%);
-  --cru-danger-container-1-color: hsl(0 100% 80%);
-  --cru-danger-container-2-color: hsl(0 100% 70%);
-  --cru-danger-on-container-color: hsl(0 100% 10%);
-  --cru-success-color: hsl(120 60% 40%);
-  --cru-success-1-color: hsl(120 60% 37%);
-  --cru-success-2-color: hsl(120 60% 34%);
-  --cru-success-on-color: hsl(120 60% 100%);
-  --cru-success-container-color: hsl(120 60% 90%);
-  --cru-success-container-1-color: hsl(120 60% 80%);
-  --cru-success-container-2-color: hsl(120 60% 70%);
-  --cru-success-on-container-color: hsl(120 60% 10%);
-  --cru-surface-dim-color: hsl(0 0% 87%);
-  --cru-surface-color: hsl(0 0% 98%);
-  --cru-surface-1-color: hsl(0 0% 90%);
-  --cru-surface-2-color: hsl(0 0% 82%);
-  --cru-surface-bright-color: hsl(0 0% 98%);
-  --cru-surface-container-lowest-color: hsl(0 0% 100%);
-  --cru-surface-container-low-color: hsl(0 0% 96%);
-  --cru-surface-container-color: hsl(0 0% 94%);
-  --cru-surface-container-high-color: hsl(0 0% 92%);
-  --cru-surface-container-highest-color: hsl(0 0% 90%);
-  --cru-surface-on-color: hsl(0 0% 10%);
-  --cru-surface-on-variant-color: hsl(0 0% 30%);
-  --cru-surface-outline-color: hsl(0 0% 50%);
-  --cru-surface-outline-variant-color: hsl(0 0% 80%);
-}
-
-@media (prefers-color-scheme: dark) {
-  :root {
-    --cru-primary-color: hsl(210 100% 80%);
-    --cru-primary-1-color: hsl(210 100% 75%);
-    --cru-primary-2-color: hsl(210 100% 68%);
-    --cru-primary-on-color: hsl(210 100% 20%);
-    --cru-primary-container-color: hsl(210 100% 30%);
-    --cru-primary-container-1-color: hsl(210 100% 25%);
-    --cru-primary-container-2-color: hsl(210 100% 20%);
-    --cru-primary-on-container-color: hsl(210 100% 90%);
-    --cru-secondary-color: hsl(40 100% 80%);
-    --cru-secondary-1-color: hsl(40 100% 75%);
-    --cru-secondary-2-color: hsl(40 100% 68%);
-    --cru-secondary-on-color: hsl(40 100% 20%);
-    --cru-secondary-container-color: hsl(40 100% 30%);
-    --cru-secondary-container-1-color: hsl(40 100% 25%);
-    --cru-secondary-container-2-color: hsl(40 100% 20%);
-    --cru-secondary-on-container-color: hsl(40 100% 90%);
-    --cru-tertiary-color: hsl(160 100% 80%);
-    --cru-tertiary-1-color: hsl(160 100% 75%);
-    --cru-tertiary-2-color: hsl(160 100% 68%);
-    --cru-tertiary-on-color: hsl(160 100% 20%);
-    --cru-tertiary-container-color: hsl(160 100% 30%);
-    --cru-tertiary-container-1-color: hsl(160 100% 25%);
-    --cru-tertiary-container-2-color: hsl(160 100% 20%);
-    --cru-tertiary-on-container-color: hsl(160 100% 90%);
-    --cru-danger-color: hsl(0 100% 80%);
-    --cru-danger-1-color: hsl(0 100% 75%);
-    --cru-danger-2-color: hsl(0 100% 68%);
-    --cru-danger-on-color: hsl(0 100% 20%);
-    --cru-danger-container-color: hsl(0 100% 30%);
-    --cru-danger-container-1-color: hsl(0 100% 25%);
-    --cru-danger-container-2-color: hsl(0 100% 20%);
-    --cru-danger-on-container-color: hsl(0 100% 90%);
-    --cru-success-color: hsl(120 60% 80%);
-    --cru-success-1-color: hsl(120 60% 75%);
-    --cru-success-2-color: hsl(120 60% 68%);
-    --cru-success-on-color: hsl(120 60% 20%);
-    --cru-success-container-color: hsl(120 60% 30%);
-    --cru-success-container-1-color: hsl(120 60% 25%);
-    --cru-success-container-2-color: hsl(120 60% 20%);
-    --cru-success-on-container-color: hsl(120 60% 90%);
-    --cru-surface-dim-color: hsl(0 0% 6%);
-    --cru-surface-color: hsl(0 0% 6%);
-    --cru-surface-1-color: hsl(0 0% 25%);
-    --cru-surface-2-color: hsl(0 0% 40%);
-    --cru-surface-bright-color: hsl(0 0% 24%);
-    --cru-surface-container-lowest-color: hsl(0 0% 4%);
-    --cru-surface-container-low-color: hsl(0 0% 10%);
-    --cru-surface-container-color: hsl(0 0% 12%);
-    --cru-surface-container-high-color: hsl(0 0% 17%);
-    --cru-surface-container-highest-color: hsl(0 0% 22%);
-    --cru-surface-on-color: hsl(0 0% 90%);
-    --cru-surface-on-variant-color: hsl(0 0% 80%);
-    --cru-surface-outline-color: hsl(0 0% 60%);
-    --cru-surface-outline-variant-color: hsl(0 0% 30%);
-  }
-}
-
-.cru-primary {
-  --cru-key-color: var(--cru-primary-color);
-  --cru-key-1-color: var(--cru-primary-1-color);
-  --cru-key-2-color: var(--cru-primary-2-color);
-  --cru-key-on-color: var(--cru-primary-on-color);
-  --cru-key-container-color: var(--cru-primary-container-color);
-  --cru-key-container-1-color: var(--cru-primary-container-1-color);
-  --cru-key-container-2-color: var(--cru-primary-container-2-color);
-  --cru-key-on-container-color: var(--cru-primary-on-container-color);
-}
-
-.cru-secondary {
-  --cru-key-color: var(--cru-secondary-color);
-  --cru-key-1-color: var(--cru-secondary-1-color);
-  --cru-key-2-color: var(--cru-secondary-2-color);
-  --cru-key-on-color: var(--cru-secondary-on-color);
-  --cru-key-container-color: var(--cru-secondary-container-color);
-  --cru-key-container-1-color: var(--cru-secondary-container-1-color);
-  --cru-key-container-2-color: var(--cru-secondary-container-2-color);
-  --cru-key-on-container-color: var(--cru-secondary-on-container-color);
-}
-
-.cru-tertiary {
-  --cru-key-color: var(--cru-tertiary-color);
-  --cru-key-1-color: var(--cru-tertiary-1-color);
-  --cru-key-2-color: var(--cru-tertiary-2-color);
-  --cru-key-on-color: var(--cru-tertiary-on-color);
-  --cru-key-container-color: var(--cru-tertiary-container-color);
-  --cru-key-container-1-color: var(--cru-tertiary-container-1-color);
-  --cru-key-container-2-color: var(--cru-tertiary-container-2-color);
-  --cru-key-on-container-color: var(--cru-tertiary-on-container-color);
-}
-
-.cru-danger {
-  --cru-key-color: var(--cru-danger-color);
-  --cru-key-1-color: var(--cru-danger-1-color);
-  --cru-key-2-color: var(--cru-danger-2-color);
-  --cru-key-on-color: var(--cru-danger-on-color);
-  --cru-key-container-color: var(--cru-danger-container-color);
-  --cru-key-container-1-color: var(--cru-danger-container-1-color);
-  --cru-key-container-2-color: var(--cru-danger-container-2-color);
-  --cru-key-on-container-color: var(--cru-danger-on-container-color);
-}
-
-.cru-success {
-  --cru-key-color: var(--cru-success-color);
-  --cru-key-1-color: var(--cru-success-1-color);
-  --cru-key-2-color: var(--cru-success-2-color);
-  --cru-key-on-color: var(--cru-success-on-color);
-  --cru-key-container-color: var(--cru-success-container-color);
-  --cru-key-container-1-color: var(--cru-success-container-1-color);
-  --cru-key-container-2-color: var(--cru-success-container-2-color);
-  --cru-key-on-container-color: var(--cru-success-on-container-color);
-}
-
diff --git a/FrontEnd/src/views/common/theme.css b/FrontEnd/src/views/common/theme.css
deleted file mode 100644
index 6ceb369f..00000000
--- a/FrontEnd/src/views/common/theme.css
+++ /dev/null
@@ -1,146 +0,0 @@
-@import "./theme-color.css";
-
-:root {
-  --cru-default-font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
-  --cru-page-padding: 1em 2em;
-
-  --cru-border-radius: 4px;
-  --cru-card-border-radius: 4px;
-}
-
-/* theme colors */
-:root {
-  --cru-primary-color: hsl(210, 100%, 50%);
-  --cru-secondary-color: hsl(30, 100%, 50%);
-  --cru-create-color: hsl(120, 100%, 25%);
-  --cru-danger-color: hsl(0, 100%, 50%);
-}
-
-/* common colors */
-:root {
-  --cru-background-color: hsl(0, 0%, 100%);
-  --cru-container-background-color: hsl(0, 0%, 97%);
-  --cru-text-primary-color: hsl(0, 0%, 0%);
-  --cru-text-secondary-color: hsl(0, 0%, 38%);
-}
-
-@media (prefers-color-scheme: dark) {
-  :root {
-    --cru-background-color: hsl(0, 0%, 0%);
-    --cru-container-background-color: hsl(0, 0%, 2%);
-    --cru-text-primary-color: hsl(0, 0%, 100%);
-    --cru-text-secondary-color: hsl(0, 0%, 85%);
-  }
-}
-
-:root {
-  --cru-body-background-color: var(--cru-background-color);
-}
-
-/* clickable color */
-:root {
-  --cru-clickable-primary-normal-color: var(--cru-primary-color);
-  --cru-clickable-primary-hover-color: hsl(210, 100%, 60%);
-  --cru-clickable-primary-focus-color: hsl(210, 100%, 60%);
-  --cru-clickable-primary-active-color: hsl(210, 100%, 70%);
-  --cru-clickable-secondary-normal-color: var(--cru-secondary-color);
-  --cru-clickable-secondary-hover-color: hsl(30, 100%, 60%);
-  --cru-clickable-secondary-focus-color: hsl(30, 100%, 60%);
-  --cru-clickable-secondary-active-color: hsl(30, 100%, 70%);
-  --cru-clickable-create-normal-color: var(--cru-create-color);
-  --cru-clickable-create-hover-color: hsl(120, 100%, 35%);
-  --cru-clickable-create-focus-color: hsl(120, 100%, 35%);
-  --cru-clickable-create-active-color: hsl(120, 100%, 35%);
-  --cru-clickable-danger-normal-color: var(--cru-danger-color);
-  --cru-clickable-danger-hover-color: hsl(0, 100%, 60%);
-  --cru-clickable-danger-focus-color: hsl(0, 100%, 60%);
-  --cru-clickable-danger-active-color: hsl(0, 100%, 70%);
-  --cru-clickable-grayscale-normal-color: hsl(0, 0%, 100%);
-  --cru-clickable-grayscale-hover-color: hsl(0, 0%, 92%);
-  --cru-clickable-grayscale-focus-color: hsl(0, 0%, 92%);
-  --cru-clickable-grayscale-active-color: hsl(0, 0%, 88%);
-  --cru-clickable-disabled-color: hsl(0, 0%, 50%);
-}
-
-@media (prefers-color-scheme: dark) {
-  :root {
-    --cru-clickable-grayscale-normal-color: hsl(0, 0%, 0%);
-    --cru-clickable-grayscale-hover-color: hsl(0, 0%, 10%);
-    --cru-clickable-grayscale-focus-color: hsl(0, 0%, 10%);
-    --cru-clickable-grayscale-active-color: hsl(0, 0%, 20%);
-  }
-}
-
-.cru-clickable-primary {
-  --cru-clickable-normal-color: var(--cru-clickable-primary-normal-color);
-  --cru-clickable-hover-color: var(--cru-clickable-primary-hover-color);
-  --cru-clickable-focus-color: var(--cru-clickable-primary-focus-color);
-  --cru-clickable-active-color: var(--cru-clickable-primary-active-color);
-}
-
-.cru-clickable-secondary {
-  --cru-clickable-normal-color: var(--cru-clickable-secondary-normal-color);
-  --cru-clickable-hover-color: var(--cru-clickable-secondary-hover-color);
-  --cru-clickable-focus-color: var(--cru-clickable-secondary-focus-color);
-  --cru-clickable-active-color: var(--cru-clickable-secondary-active-color);
-}
-
-.cru-clickable-create {
-  --cru-clickable-normal-color: var(--cru-clickable-create-normal-color);
-  --cru-clickable-hover-color: var(--cru-clickable-create-hover-color);
-  --cru-clickable-focus-color: var(--cru-clickable-create-focus-color);
-  --cru-clickable-active-color: var(--cru-clickable-create-active-color);
-}
-
-.cru-clickable-danger {
-  --cru-clickable-normal-color: var(--cru-clickable-danger-normal-color);
-  --cru-clickable-hover-color: var(--cru-clickable-danger-hover-color);
-  --cru-clickable-focus-color: var(--cru-clickable-danger-focus-color);
-  --cru-clickable-active-color: var(--cru-clickable-danger-active-color);
-}
-
-.cru-clickable-grayscale {
-  --cru-clickable-normal-color: var(--cru-clickable-grayscale-normal-color);
-  --cru-clickable-hover-color: var(--cru-clickable-grayscale-hover-color);
-  --cru-clickable-focus-color: var(--cru-clickable-grayscale-focus-color);
-  --cru-clickable-active-color: var(--cru-clickable-grayscale-active-color);
-}
-
-/* button colors */
-:root {
-  /* push button colors */
-  --cru-push-button-text-color: #ffffff;
-  --cru-push-button-disabled-text-color: hsl(0, 0%, 80%);
-}
-
-/* Card colors */
-:root {
-  --cru-card-background-primary-color: hsl(210, 100%, 50%);
-  --cru-card-border-primary-color: hsl(210, 100%, 50%);
-  --cru-card-background-secondary-color: hsl(30, 100%, 50%);
-  --cru-card-border-secondary-color: hsl(30, 100%, 50%);
-  --cru-card-background-create-color: hsl(120, 100%, 25%);
-  --cru-card-border-create-color: hsl(120, 100%, 25%);
-  --cru-card-background-danger-color: hsl(0, 100%, 50%);
-  --cru-card-border-danger-color: hsl(0, 100%, 50%);
-}
-
-.cru-card-primary {
-  --cru-card-background-color: var(--cru-card-background-primary-color);
-  --cru-card-border-color: var(--cru-card-border-primary-color)
-}
-
-.cru-card-secondary {
-  --cru-card-background-color: var(--cru-card-background-secondary-color);
-  --cru-card-border-color: var(--cru-card-border-secondary-color)
-}
-
-.cru-card-create {
-  --cru-card-background-color: var(--cru-card-background-create-color);
-  --cru-card-border-color: var(--cru-card-border-create-color)
-}
-
-.cru-card-danger {
-  --cru-card-background-color: var(--cru-card-background-danger-color);
-  --cru-card-border-color: var(--cru-card-border-danger-color)
-}
\ No newline at end of file
diff --git a/FrontEnd/src/views/common/user/UserAvatar.tsx b/FrontEnd/src/views/common/user/UserAvatar.tsx
deleted file mode 100644
index aea7bd48..00000000
--- a/FrontEnd/src/views/common/user/UserAvatar.tsx
+++ /dev/null
@@ -1,22 +0,0 @@
-import { Ref, ComponentPropsWithoutRef } from "react";
-
-import { getHttpUserClient } from "@/http/user";
-
-export interface UserAvatarProps extends ComponentPropsWithoutRef<"img"> {
-  username: string;
-  imgRef?: Ref<HTMLImageElement> | null;
-}
-
-export default function UserAvatar({
-  username,
-  imgRef,
-  ...otherProps
-}: UserAvatarProps) {
-  return (
-    <img
-      ref={imgRef}
-      src={getHttpUserClient().generateAvatarUrl(username)}
-      {...otherProps}
-    />
-  );
-}
diff --git a/FrontEnd/tsconfig.json b/FrontEnd/tsconfig.json
index cd6aa25d..bf106d95 100644
--- a/FrontEnd/tsconfig.json
+++ b/FrontEnd/tsconfig.json
@@ -21,9 +21,6 @@
       "~*": [
         "./*"
       ],
-      "@/*": [
-        "./src/*"
-      ]
     },
     "noEmit": true
   },
-- 
cgit v1.2.3


From 256cc9592a3f31fc392e1ccdb699aa206b7b47ce Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Sat, 26 Aug 2023 23:49:28 +0800
Subject: ...

---
 FrontEnd/src/common.ts                             |  2 -
 FrontEnd/src/components/AppBar.tsx                 |  3 +-
 FrontEnd/src/components/Card.tsx                   |  1 +
 FrontEnd/src/components/LoadFailReload.tsx         | 37 ------------------
 FrontEnd/src/components/LoadingPage.tsx            | 13 -------
 FrontEnd/src/components/SearchInput.tsx            |  2 +-
 FrontEnd/src/components/button/ButtonRowV2.tsx     |  3 +-
 FrontEnd/src/components/button/LoadingButton.tsx   |  1 -
 FrontEnd/src/components/common.ts                  |  1 -
 FrontEnd/src/components/dialog/ConfirmDialog.css   |  0
 FrontEnd/src/components/dialog/ConfirmDialog.tsx   |  1 -
 FrontEnd/src/components/dialog/OperationDialog.tsx |  7 +---
 FrontEnd/src/components/dialog/index.ts            |  1 +
 FrontEnd/src/components/hooks.ts                   | 14 -------
 FrontEnd/src/components/hooks/index.ts             |  3 ++
 FrontEnd/src/components/hooks/responsive.ts        |  7 ++++
 FrontEnd/src/components/hooks/useClickOutside.ts   | 38 ++++++++++++++++++
 FrontEnd/src/components/hooks/useScrollToBottom.ts | 44 +++++++++++++++++++++
 FrontEnd/src/components/input/InputGroup.tsx       | 16 ++++----
 FrontEnd/src/components/menu/Menu.tsx              |  2 +-
 FrontEnd/src/components/menu/PopupMenu.tsx         |  6 +--
 FrontEnd/src/pages/login/index.tsx                 | 14 ++-----
 FrontEnd/src/pages/register/index.tsx              | 26 +++++--------
 FrontEnd/src/pages/setting/ChangeAvatarDialog.tsx  |  5 +--
 .../src/pages/setting/ChangePasswordDialog.tsx     | 17 ++++----
 FrontEnd/src/pages/setting/index.tsx               | 11 +++---
 FrontEnd/src/pages/timeline/Timeline.tsx           |  3 +-
 .../src/pages/timeline/TimelineDeleteDialog.tsx    |  4 +-
 FrontEnd/src/pages/timeline/TimelinePostView.tsx   |  8 ++--
 FrontEnd/src/utilities/hooks.ts                    |  5 ---
 FrontEnd/src/utilities/hooks/mediaQuery.ts         |  5 ---
 FrontEnd/src/utilities/hooks/useClickOutside.ts    | 38 ------------------
 FrontEnd/src/utilities/hooks/useScrollToBottom.ts  | 45 ----------------------
 33 files changed, 149 insertions(+), 234 deletions(-)
 delete mode 100644 FrontEnd/src/components/LoadFailReload.tsx
 delete mode 100644 FrontEnd/src/components/LoadingPage.tsx
 delete mode 100644 FrontEnd/src/components/dialog/ConfirmDialog.css
 delete mode 100644 FrontEnd/src/components/hooks.ts
 create mode 100644 FrontEnd/src/components/hooks/index.ts
 create mode 100644 FrontEnd/src/components/hooks/responsive.ts
 create mode 100644 FrontEnd/src/components/hooks/useClickOutside.ts
 create mode 100644 FrontEnd/src/components/hooks/useScrollToBottom.ts
 delete mode 100644 FrontEnd/src/utilities/hooks.ts
 delete mode 100644 FrontEnd/src/utilities/hooks/mediaQuery.ts
 delete mode 100644 FrontEnd/src/utilities/hooks/useClickOutside.ts
 delete mode 100644 FrontEnd/src/utilities/hooks/useScrollToBottom.ts

(limited to 'FrontEnd/src/pages/timeline/TimelinePostView.tsx')

diff --git a/FrontEnd/src/common.ts b/FrontEnd/src/common.ts
index 7c053140..1ca796c3 100644
--- a/FrontEnd/src/common.ts
+++ b/FrontEnd/src/common.ts
@@ -3,8 +3,6 @@
 // This error should never occur. If it does, it indicates there is some logic bug in codes.
 export class UiLogicError extends Error {}
 
-export const highlightTimelineUsername = "crupest";
-
 export type { I18nText } from "./i18n";
 export type { I18nText as Text } from "./i18n";
 export { c, convertI18nText } from "./i18n";
diff --git a/FrontEnd/src/components/AppBar.tsx b/FrontEnd/src/components/AppBar.tsx
index da3a946f..1a5c1941 100644
--- a/FrontEnd/src/components/AppBar.tsx
+++ b/FrontEnd/src/components/AppBar.tsx
@@ -2,9 +2,10 @@ import { useState } from "react";
 import classnames from "classnames";
 import { Link, NavLink } from "react-router-dom";
 
-import { I18nText, useC, useMobile } from "./common";
 import { useUser } from "~src/services/user";
 
+import { I18nText, useC } from "./common";
+import { useMobile } from "./hooks";
 import TimelineLogo from "./TimelineLogo";
 import { IconButton } from "./button";
 import UserAvatar from "./user/UserAvatar";
diff --git a/FrontEnd/src/components/Card.tsx b/FrontEnd/src/components/Card.tsx
index a8f0d3cc..5d3ef630 100644
--- a/FrontEnd/src/components/Card.tsx
+++ b/FrontEnd/src/components/Card.tsx
@@ -2,6 +2,7 @@ import { ComponentPropsWithoutRef, Ref } from "react";
 import classNames from "classnames";
 
 import { ThemeColor } from "./common";
+
 import "./Card.css";
 
 interface CardProps extends ComponentPropsWithoutRef<"div"> {
diff --git a/FrontEnd/src/components/LoadFailReload.tsx b/FrontEnd/src/components/LoadFailReload.tsx
deleted file mode 100644
index 81ba1f67..00000000
--- a/FrontEnd/src/components/LoadFailReload.tsx
+++ /dev/null
@@ -1,37 +0,0 @@
-import * as React from "react";
-import { Trans } from "react-i18next";
-
-export interface LoadFailReloadProps {
-  className?: string;
-  style?: React.CSSProperties;
-  onReload: () => void;
-}
-
-const LoadFailReload: React.FC<LoadFailReloadProps> = ({
-  onReload,
-  className,
-  style,
-}) => {
-  return (
-    <Trans
-      i18nKey="loadFailReload"
-      parent="div"
-      className={className}
-      style={style}
-    >
-      0
-      <a
-        href="#"
-        onClick={(e) => {
-          onReload();
-          e.preventDefault();
-        }}
-      >
-        1
-      </a>
-      2
-    </Trans>
-  );
-};
-
-export default LoadFailReload;
diff --git a/FrontEnd/src/components/LoadingPage.tsx b/FrontEnd/src/components/LoadingPage.tsx
deleted file mode 100644
index 35ee1aa8..00000000
--- a/FrontEnd/src/components/LoadingPage.tsx
+++ /dev/null
@@ -1,13 +0,0 @@
-import * as React from "react";
-
-import Spinner from "./Spinner";
-
-const LoadingPage: React.FC = () => {
-  return (
-    <div className="position-fixed w-100 h-100 d-flex justify-content-center align-items-center">
-      <Spinner />
-    </div>
-  );
-};
-
-export default LoadingPage;
diff --git a/FrontEnd/src/components/SearchInput.tsx b/FrontEnd/src/components/SearchInput.tsx
index e3216b86..71820bfa 100644
--- a/FrontEnd/src/components/SearchInput.tsx
+++ b/FrontEnd/src/components/SearchInput.tsx
@@ -1,7 +1,7 @@
 import classNames from "classnames";
 
 import { useC, Text } from "./common";
-import LoadingButton from "./button/LoadingButton";
+import { LoadingButton } from "./button";
 
 import "./SearchInput.css";
 
diff --git a/FrontEnd/src/components/button/ButtonRowV2.tsx b/FrontEnd/src/components/button/ButtonRowV2.tsx
index 3467ad52..5129e7f1 100644
--- a/FrontEnd/src/components/button/ButtonRowV2.tsx
+++ b/FrontEnd/src/components/button/ButtonRowV2.tsx
@@ -1,13 +1,14 @@
 import { ComponentPropsWithoutRef, Ref } from "react";
 import classNames from "classnames";
 
+import { Text, ThemeColor } from "../common";
+
 import Button from "./Button";
 import FlatButton from "./FlatButton";
 import IconButton from "./IconButton";
 import LoadingButton from "./LoadingButton";
 
 import "./ButtonRow.css";
-import { Text, ThemeColor } from "../common";
 
 interface ButtonRowV2ButtonBase {
   key: string | number;
diff --git a/FrontEnd/src/components/button/LoadingButton.tsx b/FrontEnd/src/components/button/LoadingButton.tsx
index 7e7d08e6..d9d41ddb 100644
--- a/FrontEnd/src/components/button/LoadingButton.tsx
+++ b/FrontEnd/src/components/button/LoadingButton.tsx
@@ -1,7 +1,6 @@
 import classNames from "classnames";
 
 import { I18nText, ThemeColor, useC } from "../common";
-
 import Spinner from "../Spinner";
 
 import "./LoadingButton.css";
diff --git a/FrontEnd/src/components/common.ts b/FrontEnd/src/components/common.ts
index e6f7319f..b96388ab 100644
--- a/FrontEnd/src/components/common.ts
+++ b/FrontEnd/src/components/common.ts
@@ -11,4 +11,3 @@ export const themeColors = [
 export type ThemeColor = (typeof themeColors)[number];
 
 export { breakpoints } from "./breakpoints";
-export { useMobile } from "./hooks";
diff --git a/FrontEnd/src/components/dialog/ConfirmDialog.css b/FrontEnd/src/components/dialog/ConfirmDialog.css
deleted file mode 100644
index e69de29b..00000000
diff --git a/FrontEnd/src/components/dialog/ConfirmDialog.tsx b/FrontEnd/src/components/dialog/ConfirmDialog.tsx
index 26939c9b..1d997305 100644
--- a/FrontEnd/src/components/dialog/ConfirmDialog.tsx
+++ b/FrontEnd/src/components/dialog/ConfirmDialog.tsx
@@ -1,5 +1,4 @@
 import { useC, Text, ThemeColor } from "../common";
-
 import Dialog from "./Dialog";
 import DialogContainer from "./DialogContainer";
 
diff --git a/FrontEnd/src/components/dialog/OperationDialog.tsx b/FrontEnd/src/components/dialog/OperationDialog.tsx
index e5db7f4f..96766825 100644
--- a/FrontEnd/src/components/dialog/OperationDialog.tsx
+++ b/FrontEnd/src/components/dialog/OperationDialog.tsx
@@ -2,23 +2,18 @@ import { useState, ReactNode, ComponentProps } from "react";
 import classNames from "classnames";
 
 import { useC, Text, ThemeColor } from "../common";
-
 import {
   useInputs,
   InputGroup,
   Initializer as InputInitializer,
-  InputValueDict,
-  InputErrorDict,
   InputConfirmValueDict,
 } from "../input";
+import { ButtonRow } from "../button";
 import Dialog from "./Dialog";
 import DialogContainer from "./DialogContainer";
-import { ButtonRow } from "../button";
 
 import "./OperationDialog.css";
 
-export type { InputInitializer, InputValueDict, InputErrorDict };
-
 interface OperationDialogPromptProps {
   message?: Text;
   customMessage?: Text;
diff --git a/FrontEnd/src/components/dialog/index.ts b/FrontEnd/src/components/dialog/index.ts
index 59f15791..17db8fd0 100644
--- a/FrontEnd/src/components/dialog/index.ts
+++ b/FrontEnd/src/components/dialog/index.ts
@@ -4,6 +4,7 @@ export { default as Dialog } from "./Dialog";
 export { default as FullPageDialog } from "./FullPageDialog";
 export { default as OperationDialog } from "./OperationDialog";
 export { default as ConfirmDialog } from "./ConfirmDialog";
+export { default as DialogContainer } from "./DialogContainer";
 
 type DialogMap<D extends string, V> = {
   [K in D]: V;
diff --git a/FrontEnd/src/components/hooks.ts b/FrontEnd/src/components/hooks.ts
deleted file mode 100644
index 523a4538..00000000
--- a/FrontEnd/src/components/hooks.ts
+++ /dev/null
@@ -1,14 +0,0 @@
-// TODO: Migrate hooks
-
-export {
-  useIsSmallScreen,
-  useClickOutside,
-  useScrollToBottom,
-} from "~src/utilities/hooks";
-
-import { useMediaQuery } from "react-responsive";
-import { breakpoints } from "./breakpoints";
-
-export function useMobile(): boolean {
-  return useMediaQuery({ maxWidth: breakpoints.sm });
-}
diff --git a/FrontEnd/src/components/hooks/index.ts b/FrontEnd/src/components/hooks/index.ts
new file mode 100644
index 00000000..3c9859bc
--- /dev/null
+++ b/FrontEnd/src/components/hooks/index.ts
@@ -0,0 +1,3 @@
+export { useMobile } from "./responsive";
+export { default as useClickOutside } from "./useClickOutside";
+export { default as useScrollToBottom } from "./useScrollToBottom";
diff --git a/FrontEnd/src/components/hooks/responsive.ts b/FrontEnd/src/components/hooks/responsive.ts
new file mode 100644
index 00000000..6bcce96c
--- /dev/null
+++ b/FrontEnd/src/components/hooks/responsive.ts
@@ -0,0 +1,7 @@
+import { useMediaQuery } from "react-responsive";
+
+import { breakpoints } from "../breakpoints";
+
+export function useMobile(): boolean {
+  return useMediaQuery({ maxWidth: breakpoints.sm });
+}
diff --git a/FrontEnd/src/components/hooks/useClickOutside.ts b/FrontEnd/src/components/hooks/useClickOutside.ts
new file mode 100644
index 00000000..828ce7e3
--- /dev/null
+++ b/FrontEnd/src/components/hooks/useClickOutside.ts
@@ -0,0 +1,38 @@
+import { useRef, useEffect } from "react";
+
+export default function useClickOutside(
+  element: HTMLElement | null | undefined,
+  onClickOutside: () => void,
+  nextTick?: boolean,
+): void {
+  const onClickOutsideRef = useRef<() => void>(onClickOutside);
+
+  useEffect(() => {
+    onClickOutsideRef.current = onClickOutside;
+  }, [onClickOutside]);
+
+  useEffect(() => {
+    if (element != null) {
+      const handler = (event: MouseEvent): void => {
+        let e: HTMLElement | null = event.target as HTMLElement;
+        while (e) {
+          if (e == element) {
+            return;
+          }
+          e = e.parentElement;
+        }
+        onClickOutsideRef.current();
+      };
+      if (nextTick) {
+        setTimeout(() => {
+          document.addEventListener("click", handler);
+        });
+      } else {
+        document.addEventListener("click", handler);
+      }
+      return () => {
+        document.removeEventListener("click", handler);
+      };
+    }
+  }, [element, nextTick]);
+}
diff --git a/FrontEnd/src/components/hooks/useScrollToBottom.ts b/FrontEnd/src/components/hooks/useScrollToBottom.ts
new file mode 100644
index 00000000..79fcda16
--- /dev/null
+++ b/FrontEnd/src/components/hooks/useScrollToBottom.ts
@@ -0,0 +1,44 @@
+import { useRef, useEffect } from "react";
+import { fromEvent, filter, throttleTime } from "rxjs";
+
+function useScrollToBottom(
+  handler: () => void,
+  enable = true,
+  option = {
+    maxOffset: 5,
+    throttle: 1000,
+  },
+): void {
+  const handlerRef = useRef<(() => void) | null>(null);
+
+  useEffect(() => {
+    handlerRef.current = handler;
+
+    return () => {
+      handlerRef.current = null;
+    };
+  }, [handler]);
+
+  useEffect(() => {
+    const subscription = fromEvent(window, "scroll")
+      .pipe(
+        filter(
+          () =>
+            window.scrollY >=
+            document.body.scrollHeight - window.innerHeight - option.maxOffset,
+        ),
+        throttleTime(option.throttle),
+      )
+      .subscribe(() => {
+        if (enable) {
+          handlerRef.current?.();
+        }
+      });
+
+    return () => {
+      subscription.unsubscribe();
+    };
+  }, [enable, option.maxOffset, option.throttle]);
+}
+
+export default useScrollToBottom;
diff --git a/FrontEnd/src/components/input/InputGroup.tsx b/FrontEnd/src/components/input/InputGroup.tsx
index 4f487344..47a43b38 100644
--- a/FrontEnd/src/components/input/InputGroup.tsx
+++ b/FrontEnd/src/components/input/InputGroup.tsx
@@ -72,12 +72,9 @@ export type InputDirtyDict = Record<string, boolean>;
 // use never so you don't have to cast everywhere
 export type InputConfirmValueDict = Record<string, never>;
 
-export type GeneralInputErrorDict =
-  | {
-      [key: string]: Text | null | undefined;
-    }
-  | null
-  | undefined;
+export type GeneralInputErrorDict = {
+  [key: string]: Text | null | undefined;
+};
 
 type MakeInputInfo<I extends Input> = Omit<I, "value" | "error" | "disabled">;
 
@@ -87,8 +84,9 @@ export type InputInfo = {
 
 export type Validator = (
   values: InputValueDict,
+  errors: GeneralInputErrorDict,
   inputs: InputInfo[],
-) => GeneralInputErrorDict;
+) => void;
 
 export type InputScheme = {
   inputs: InputInfo[];
@@ -157,7 +155,9 @@ function validate(
   values: InputValueDict,
   inputs: InputInfo[],
 ): InputErrorDict {
-  return cleanObject(validator?.(values, inputs) ?? {});
+  const errors: GeneralInputErrorDict = {};
+  validator?.(values, errors, inputs);
+  return cleanObject(errors);
 }
 
 export function useInputs(options: { init: Initializer }): {
diff --git a/FrontEnd/src/components/menu/Menu.tsx b/FrontEnd/src/components/menu/Menu.tsx
index e8099c76..c01c6cfb 100644
--- a/FrontEnd/src/components/menu/Menu.tsx
+++ b/FrontEnd/src/components/menu/Menu.tsx
@@ -2,9 +2,9 @@ import { CSSProperties } from "react";
 import classNames from "classnames";
 
 import { useC, Text, ThemeColor } from "../common";
+import Icon from "../Icon";
 
 import "./Menu.css";
-import Icon from "../Icon";
 
 export type MenuItem =
   | {
diff --git a/FrontEnd/src/components/menu/PopupMenu.tsx b/FrontEnd/src/components/menu/PopupMenu.tsx
index 23a67f79..9d90799d 100644
--- a/FrontEnd/src/components/menu/PopupMenu.tsx
+++ b/FrontEnd/src/components/menu/PopupMenu.tsx
@@ -3,11 +3,9 @@ import classNames from "classnames";
 import { createPortal } from "react-dom";
 import { usePopper } from "react-popper";
 
-import { useClickOutside } from "~src/utilities/hooks";
-
-import Menu, { MenuItems } from "./Menu";
-
 import { ThemeColor } from "../common";
+import { useClickOutside } from "../hooks";
+import Menu, { MenuItems } from "./Menu";
 
 import "./PopupMenu.css";
 
diff --git a/FrontEnd/src/pages/login/index.tsx b/FrontEnd/src/pages/login/index.tsx
index 582ebd0f..39ea3831 100644
--- a/FrontEnd/src/pages/login/index.tsx
+++ b/FrontEnd/src/pages/login/index.tsx
@@ -6,11 +6,7 @@ import { useUser, userService } from "~src/services/user";
 
 import { useC } from "~src/components/common";
 import LoadingButton from "~src/components/button/LoadingButton";
-import {
-  InputErrorDict,
-  InputGroup,
-  useInputs,
-} from "~src/components/input/InputGroup";
+import { InputGroup, useInputs } from "~src/components/input/InputGroup";
 import Page from "~src/components/Page";
 
 import "./index.css";
@@ -47,15 +43,13 @@ export default function LoginPage() {
               label: "user.rememberMe",
             },
           ],
-          validator: ({ username, password }) => {
-            const result: InputErrorDict = {};
+          validator: ({ username, password }, errors) => {
             if (username === "") {
-              result["username"] = "login.emptyUsername";
+              errors["username"] = "login.emptyUsername";
             }
             if (password === "") {
-              result["password"] = "login.emptyPassword";
+              errors["password"] = "login.emptyPassword";
             }
-            return result;
           },
         },
         dataInit: {},
diff --git a/FrontEnd/src/pages/register/index.tsx b/FrontEnd/src/pages/register/index.tsx
index 9e478612..fa25c2c2 100644
--- a/FrontEnd/src/pages/register/index.tsx
+++ b/FrontEnd/src/pages/register/index.tsx
@@ -7,11 +7,7 @@ import { getHttpTokenClient } from "~src/http/token";
 import { userService, useUser } from "~src/services/user";
 
 import { LoadingButton } from "~src/components/button";
-import {
-  useInputs,
-  InputErrorDict,
-  InputGroup,
-} from "~src/components/input/InputGroup";
+import { useInputs, InputGroup } from "~src/components/input/InputGroup";
 
 import "./index.css";
 
@@ -51,26 +47,22 @@ export default function RegisterPage() {
               label: "register.registerCode",
             },
           ],
-          validator: ({
-            username,
-            password,
-            confirmPassword,
-            registerCode,
-          }) => {
-            const result: InputErrorDict = {};
+          validator: (
+            { username, password, confirmPassword, registerCode },
+            errors,
+          ) => {
             if (username === "") {
-              result["username"] = "register.error.usernameEmpty";
+              errors["username"] = "register.error.usernameEmpty";
             }
             if (password === "") {
-              result["password"] = "register.error.passwordEmpty";
+              errors["password"] = "register.error.passwordEmpty";
             }
             if (confirmPassword !== password) {
-              result["confirmPassword"] = "register.error.confirmPasswordWrong";
+              errors["confirmPassword"] = "register.error.confirmPasswordWrong";
             }
             if (registerCode === "") {
-              result["registerCode"] = "register.error.registerCodeEmpty";
+              errors["registerCode"] = "register.error.registerCodeEmpty";
             }
-            return result;
           },
         },
         dataInit: {},
diff --git a/FrontEnd/src/pages/setting/ChangeAvatarDialog.tsx b/FrontEnd/src/pages/setting/ChangeAvatarDialog.tsx
index c34bcf4f..011c5059 100644
--- a/FrontEnd/src/pages/setting/ChangeAvatarDialog.tsx
+++ b/FrontEnd/src/pages/setting/ChangeAvatarDialog.tsx
@@ -11,9 +11,8 @@ import ImageCropper, {
   applyClipToImage,
 } from "~src/components/ImageCropper";
 import BlobImage from "~src/components/BlobImage";
-import ButtonRowV2 from "~src/components/button/ButtonRowV2";
-import Dialog from "~src/components/dialog/Dialog";
-import DialogContainer from "~src/components/dialog/DialogContainer";
+import { ButtonRowV2 } from "~src/components/button";
+import { Dialog, DialogContainer } from "~src/components/dialog";
 
 import "./ChangeAvatarDialog.css";
 
diff --git a/FrontEnd/src/pages/setting/ChangePasswordDialog.tsx b/FrontEnd/src/pages/setting/ChangePasswordDialog.tsx
index bfcea92d..946b9fbe 100644
--- a/FrontEnd/src/pages/setting/ChangePasswordDialog.tsx
+++ b/FrontEnd/src/pages/setting/ChangePasswordDialog.tsx
@@ -3,9 +3,7 @@ import { useNavigate } from "react-router-dom";
 
 import { userService } from "~src/services/user";
 
-import OperationDialog, {
-  InputErrorDict,
-} from "~src/components/dialog/OperationDialog";
+import { OperationDialog } from "~src/components/dialog";
 
 interface ChangePasswordDialogProps {
   open: boolean;
@@ -47,21 +45,22 @@ export function ChangePasswordDialog(props: ChangePasswordDialogProps) {
             password: true,
           },
         ],
-        validator: ({ oldPassword, newPassword, retypedNewPassword }) => {
-          const result: InputErrorDict = {};
+        validator: (
+          { oldPassword, newPassword, retypedNewPassword },
+          errors,
+        ) => {
           if (oldPassword === "") {
-            result["oldPassword"] =
+            errors["oldPassword"] =
               "settings.dialogChangePassword.errorEmptyOldPassword";
           }
           if (newPassword === "") {
-            result["newPassword"] =
+            errors["newPassword"] =
               "settings.dialogChangePassword.errorEmptyNewPassword";
           }
           if (retypedNewPassword !== newPassword) {
-            result["retypedNewPassword"] =
+            errors["retypedNewPassword"] =
               "settings.dialogChangePassword.errorRetypeNotMatch";
           }
-          return result;
         },
       }}
       onProcess={async ({ oldPassword, newPassword }) => {
diff --git a/FrontEnd/src/pages/setting/index.tsx b/FrontEnd/src/pages/setting/index.tsx
index 67416a08..918a77b5 100644
--- a/FrontEnd/src/pages/setting/index.tsx
+++ b/FrontEnd/src/pages/setting/index.tsx
@@ -4,25 +4,26 @@ import {
   ReactNode,
   ComponentPropsWithoutRef,
 } from "react";
-import { useTranslation } from "react-i18next";
+import { useTranslation } from "react-i18next"; // For change language.
 import { useNavigate } from "react-router-dom";
 import classNames from "classnames";
 
-import { useC, Text } from "~src/common";
 import { useUser, userService } from "~src/services/user";
 import { getHttpUserClient } from "~src/http/user";
+import { pushAlert } from "~src/services/alert";
+
+import { useC, Text } from "~src/common";
 
-import { useDialog } from "~src/components/dialog";
-import ConfirmDialog from "~src/components/dialog/ConfirmDialog";
+import { useDialog, ConfirmDialog } from "~src/components/dialog";
 import Card from "~src/components/Card";
 import Spinner from "~src/components/Spinner";
 import Page from "~src/components/Page";
+
 import ChangePasswordDialog from "./ChangePasswordDialog";
 import ChangeAvatarDialog from "./ChangeAvatarDialog";
 import ChangeNicknameDialog from "./ChangeNicknameDialog";
 
 import "./index.css";
-import { pushAlert } from "~src/services/alert";
 
 interface SettingSectionProps
   extends Omit<ComponentPropsWithoutRef<typeof Card>, "title"> {
diff --git a/FrontEnd/src/pages/timeline/Timeline.tsx b/FrontEnd/src/pages/timeline/Timeline.tsx
index f266ec9d..caf4f502 100644
--- a/FrontEnd/src/pages/timeline/Timeline.tsx
+++ b/FrontEnd/src/pages/timeline/Timeline.tsx
@@ -1,6 +1,5 @@
 import { useState, useEffect } from "react";
 import classnames from "classnames";
-import { useScrollToBottom } from "~src/utilities/hooks";
 import { HubConnectionState } from "@microsoft/signalr";
 
 import {
@@ -16,6 +15,8 @@ import {
 
 import { getTimelinePostUpdate$ } from "~src/services/timeline";
 
+import { useScrollToBottom } from "~src/components/hooks";
+
 import TimelinePostList from "./TimelinePostList";
 import TimelinePostEdit from "./TimelinePostCreateView";
 import TimelineCard from "./TimelineCard";
diff --git a/FrontEnd/src/pages/timeline/TimelineDeleteDialog.tsx b/FrontEnd/src/pages/timeline/TimelineDeleteDialog.tsx
index 7b7b8e8c..a7209e75 100644
--- a/FrontEnd/src/pages/timeline/TimelineDeleteDialog.tsx
+++ b/FrontEnd/src/pages/timeline/TimelineDeleteDialog.tsx
@@ -39,9 +39,9 @@ const TimelineDeleteDialog: React.FC<TimelineDeleteDialog> = (props) => {
             label: "",
           },
         ],
-        validator: ({ name }) => {
+        validator: ({ name }, errors) => {
           if (name !== timeline.nameV2) {
-            return { name: "timeline.deleteDialog.notMatch" };
+            errors.name = "timeline.deleteDialog.notMatch";
           }
         },
       }}
diff --git a/FrontEnd/src/pages/timeline/TimelinePostView.tsx b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
index 2a8c5947..6b87ef2a 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostView.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
@@ -1,11 +1,13 @@
 import { useState } from "react";
 
-import { getHttpTimelineClient, HttpTimelinePostInfo } from "~src/http/timeline";
+import {
+  getHttpTimelineClient,
+  HttpTimelinePostInfo,
+} from "~src/http/timeline";
 
 import { pushAlert } from "~src/services/alert";
 
-import { useClickOutside } from "~src/utilities/hooks";
-
+import { useClickOutside } from "~src/components/hooks";
 import UserAvatar from "~src/components/user/UserAvatar";
 import { useDialog } from "~src/components/dialog";
 import FlatButton from "~src/components/button/FlatButton";
diff --git a/FrontEnd/src/utilities/hooks.ts b/FrontEnd/src/utilities/hooks.ts
deleted file mode 100644
index a59f7167..00000000
--- a/FrontEnd/src/utilities/hooks.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-import useClickOutside from "./hooks/useClickOutside";
-import useScrollToBottom from "./hooks/useScrollToBottom";
-import { useIsSmallScreen } from "./hooks/mediaQuery";
-
-export { useClickOutside, useScrollToBottom, useIsSmallScreen };
diff --git a/FrontEnd/src/utilities/hooks/mediaQuery.ts b/FrontEnd/src/utilities/hooks/mediaQuery.ts
deleted file mode 100644
index ad55c3c0..00000000
--- a/FrontEnd/src/utilities/hooks/mediaQuery.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-import { useMediaQuery } from "react-responsive";
-
-export function useIsSmallScreen(): boolean {
-  return useMediaQuery({ maxWidth: 576 });
-}
diff --git a/FrontEnd/src/utilities/hooks/useClickOutside.ts b/FrontEnd/src/utilities/hooks/useClickOutside.ts
deleted file mode 100644
index 6dcbf7b3..00000000
--- a/FrontEnd/src/utilities/hooks/useClickOutside.ts
+++ /dev/null
@@ -1,38 +0,0 @@
-import { useRef, useEffect } from "react";
-
-export default function useClickOutside(
-  element: HTMLElement | null | undefined,
-  onClickOutside: () => void,
-  nextTick?: boolean
-): void {
-  const onClickOutsideRef = useRef<() => void>(onClickOutside);
-
-  useEffect(() => {
-    onClickOutsideRef.current = onClickOutside;
-  }, [onClickOutside]);
-
-  useEffect(() => {
-    if (element != null) {
-      const handler = (event: MouseEvent): void => {
-        let e: HTMLElement | null = event.target as HTMLElement;
-        while (e) {
-          if (e == element) {
-            return;
-          }
-          e = e.parentElement;
-        }
-        onClickOutsideRef.current();
-      };
-      if (nextTick) {
-        setTimeout(() => {
-          document.addEventListener("click", handler);
-        });
-      } else {
-        document.addEventListener("click", handler);
-      }
-      return () => {
-        document.removeEventListener("click", handler);
-      };
-    }
-  }, [element, nextTick]);
-}
diff --git a/FrontEnd/src/utilities/hooks/useScrollToBottom.ts b/FrontEnd/src/utilities/hooks/useScrollToBottom.ts
deleted file mode 100644
index 216746f4..00000000
--- a/FrontEnd/src/utilities/hooks/useScrollToBottom.ts
+++ /dev/null
@@ -1,45 +0,0 @@
-import { useRef, useEffect } from "react";
-import { fromEvent } from "rxjs";
-import { filter, throttleTime } from "rxjs/operators";
-
-function useScrollToBottom(
-  handler: () => void,
-  enable = true,
-  option = {
-    maxOffset: 5,
-    throttle: 1000,
-  }
-): void {
-  const handlerRef = useRef<(() => void) | null>(null);
-
-  useEffect(() => {
-    handlerRef.current = handler;
-
-    return () => {
-      handlerRef.current = null;
-    };
-  }, [handler]);
-
-  useEffect(() => {
-    const subscription = fromEvent(window, "scroll")
-      .pipe(
-        filter(
-          () =>
-            window.scrollY >=
-            document.body.scrollHeight - window.innerHeight - option.maxOffset
-        ),
-        throttleTime(option.throttle)
-      )
-      .subscribe(() => {
-        if (enable) {
-          handlerRef.current?.();
-        }
-      });
-
-    return () => {
-      subscription.unsubscribe();
-    };
-  }, [enable, option.maxOffset, option.throttle]);
-}
-
-export default useScrollToBottom;
-- 
cgit v1.2.3


From b05860b6d2ea17db29a338659def49dc31082346 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Tue, 29 Aug 2023 01:30:30 +0800
Subject: Refactor dialog module.

---
 FrontEnd/src/components/dialog/ConfirmDialog.tsx   |  14 +--
 FrontEnd/src/components/dialog/Dialog.tsx          |  18 +--
 FrontEnd/src/components/dialog/DialogProvider.tsx  |  95 +++++++++++++++
 FrontEnd/src/components/dialog/OperationDialog.tsx |  45 +++----
 FrontEnd/src/components/dialog/index.ts            |  65 -----------
 FrontEnd/src/components/dialog/index.tsx           |  12 ++
 FrontEnd/src/pages/setting/ChangeAvatarDialog.tsx  |  32 +++--
 .../src/pages/setting/ChangeNicknameDialog.tsx     |  11 +-
 .../src/pages/setting/ChangePasswordDialog.tsx     |  11 +-
 FrontEnd/src/pages/setting/index.tsx               | 130 ++++++++++-----------
 FrontEnd/src/pages/timeline/MarkdownPostEdit.tsx   |  33 +++---
 FrontEnd/src/pages/timeline/TimelineCard.tsx       |  28 +++--
 .../src/pages/timeline/TimelineDeleteDialog.tsx    |   4 -
 .../src/pages/timeline/TimelinePostCreateView.tsx  |   2 +-
 FrontEnd/src/pages/timeline/TimelinePostView.tsx   |  48 ++++----
 .../timeline/TimelinePropertyChangeDialog.tsx      |   4 -
 16 files changed, 285 insertions(+), 267 deletions(-)
 create mode 100644 FrontEnd/src/components/dialog/DialogProvider.tsx
 delete mode 100644 FrontEnd/src/components/dialog/index.ts
 create mode 100644 FrontEnd/src/components/dialog/index.tsx

(limited to 'FrontEnd/src/pages/timeline/TimelinePostView.tsx')

diff --git a/FrontEnd/src/components/dialog/ConfirmDialog.tsx b/FrontEnd/src/components/dialog/ConfirmDialog.tsx
index 1d997305..a7b3917f 100644
--- a/FrontEnd/src/components/dialog/ConfirmDialog.tsx
+++ b/FrontEnd/src/components/dialog/ConfirmDialog.tsx
@@ -1,18 +1,16 @@
 import { useC, Text, ThemeColor } from "../common";
+
 import Dialog from "./Dialog";
 import DialogContainer from "./DialogContainer";
+import { useCloseDialog } from "./DialogProvider";
 
 export default function ConfirmDialog({
-  open,
-  onClose,
   onConfirm,
   title,
   body,
   color,
   bodyColor,
 }: {
-  open: boolean;
-  onClose: () => void;
   onConfirm: () => void;
   title: Text;
   body: Text;
@@ -21,8 +19,10 @@ export default function ConfirmDialog({
 }) {
   const c = useC();
 
+  const closeDialog = useCloseDialog();
+
   return (
-    <Dialog onClose={onClose} open={open}>
+    <Dialog>
       <DialogContainer
         title={title}
         titleColor={color ?? "danger"}
@@ -34,7 +34,7 @@ export default function ConfirmDialog({
               text: "operationDialog.cancel",
               color: "secondary",
               outline: true,
-              onClick: onClose,
+              onClick: closeDialog,
             },
           },
           {
@@ -45,7 +45,7 @@ export default function ConfirmDialog({
               color: "danger",
               onClick: () => {
                 onConfirm();
-                onClose();
+                closeDialog();
               },
             },
           },
diff --git a/FrontEnd/src/components/dialog/Dialog.tsx b/FrontEnd/src/components/dialog/Dialog.tsx
index 2ff7bea8..b1d66704 100644
--- a/FrontEnd/src/components/dialog/Dialog.tsx
+++ b/FrontEnd/src/components/dialog/Dialog.tsx
@@ -5,6 +5,8 @@ import classNames from "classnames";
 
 import { ThemeColor } from "../common";
 
+import { useCloseDialog } from "./DialogProvider";
+
 import "./Dialog.css";
 
 const optionalPortalElement = document.getElementById("portal");
@@ -14,22 +16,20 @@ if (optionalPortalElement == null) {
 const portalElement = optionalPortalElement;
 
 interface DialogProps {
-  open: boolean;
-  onClose: () => void;
   color?: ThemeColor;
   children?: ReactNode;
   disableCloseOnClickOnOverlay?: boolean;
 }
 
 export default function Dialog({
-  open,
-  onClose,
   color,
   children,
   disableCloseOnClickOnOverlay,
 }: DialogProps) {
   color = color ?? "primary";
 
+  const closeDialog = useCloseDialog();
+
   const nodeRef = useRef(null);
 
   return ReactDOM.createPortal(
@@ -37,7 +37,7 @@ export default function Dialog({
       nodeRef={nodeRef}
       mountOnEnter
       unmountOnExit
-      in={open}
+      in
       timeout={300}
       classNames="cru-dialog"
     >
@@ -47,13 +47,7 @@ export default function Dialog({
       >
         <div
           className="cru-dialog-background"
-          onClick={
-            disableCloseOnClickOnOverlay
-              ? undefined
-              : () => {
-                  onClose();
-                }
-          }
+          onClick={disableCloseOnClickOnOverlay ? undefined : closeDialog}
         />
         <div className="cru-dialog-container">{children}</div>
       </div>
diff --git a/FrontEnd/src/components/dialog/DialogProvider.tsx b/FrontEnd/src/components/dialog/DialogProvider.tsx
new file mode 100644
index 00000000..bb85e4cf
--- /dev/null
+++ b/FrontEnd/src/components/dialog/DialogProvider.tsx
@@ -0,0 +1,95 @@
+import { useState, useContext, createContext, ReactNode } from "react";
+
+import { UiLogicError } from "../common";
+
+type DialogMap<D extends string> = {
+  [K in D]: ReactNode;
+};
+
+interface DialogController<D extends string> {
+  currentDialog: D | null;
+  currentDialogReactNode: ReactNode;
+  canSwitchDialog: boolean;
+  switchDialog: (newDialog: D | null) => void;
+  setCanSwitchDialog: (enable: boolean) => void;
+  closeDialog: () => void;
+  forceSwitchDialog: (newDialog: D | null) => void;
+  forceCloseDialog: () => void;
+}
+
+export function useDialog<D extends string>(
+  dialogs: DialogMap<D>,
+  options?: {
+    initDialog?: D | null;
+    onClose?: {
+      [K in D]?: () => void;
+    };
+  },
+): {
+  controller: DialogController<D>;
+  switchDialog: (newDialog: D | null) => void;
+  forceSwitchDialog: (newDialog: D | null) => void;
+  createDialogSwitch: (newDialog: D | null) => () => void;
+} {
+  const [canSwitchDialog, setCanSwitchDialog] = useState<boolean>(true);
+  const [dialog, setDialog] = useState<D | null>(options?.initDialog ?? null);
+
+  const forceSwitchDialog = (newDialog: D | null) => {
+    if (dialog != null) {
+      options?.onClose?.[dialog]?.();
+    }
+    setDialog(newDialog);
+    setCanSwitchDialog(true);
+  };
+
+  const switchDialog = (newDialog: D | null) => {
+    if (canSwitchDialog) {
+      forceSwitchDialog(newDialog);
+    }
+  };
+
+  const controller: DialogController<D> = {
+    currentDialog: dialog,
+    currentDialogReactNode: dialog == null ? null : dialogs[dialog],
+    canSwitchDialog,
+    switchDialog,
+    setCanSwitchDialog,
+    closeDialog: () => switchDialog(null),
+    forceSwitchDialog,
+    forceCloseDialog: () => forceSwitchDialog(null),
+  };
+
+  return {
+    controller,
+    switchDialog,
+    forceSwitchDialog,
+    createDialogSwitch: (newDialog: D | null) => () => switchDialog(newDialog),
+  };
+}
+
+const DialogControllerContext = createContext<DialogController<string> | null>(
+  null,
+);
+
+export function useDialogController(): DialogController<string> {
+  const controller = useContext(DialogControllerContext);
+  if (controller == null) throw new UiLogicError("not in dialog provider");
+  return controller;
+}
+
+export function useCloseDialog(): () => void {
+  const controller = useDialogController();
+  return controller.closeDialog;
+}
+
+export function DialogProvider<D extends string>({
+  controller,
+}: {
+  controller: DialogController<D>;
+}) {
+  return (
+    <DialogControllerContext.Provider value={controller as never}>
+      {controller.currentDialogReactNode}
+    </DialogControllerContext.Provider>
+  );
+}
diff --git a/FrontEnd/src/components/dialog/OperationDialog.tsx b/FrontEnd/src/components/dialog/OperationDialog.tsx
index 96766825..902d60c6 100644
--- a/FrontEnd/src/components/dialog/OperationDialog.tsx
+++ b/FrontEnd/src/components/dialog/OperationDialog.tsx
@@ -11,6 +11,7 @@ import {
 import { ButtonRow } from "../button";
 import Dialog from "./Dialog";
 import DialogContainer from "./DialogContainer";
+import { useDialogController } from "./DialogProvider";
 
 import "./OperationDialog.css";
 
@@ -35,9 +36,6 @@ function OperationDialogPrompt(props: OperationDialogPromptProps) {
 }
 
 export interface OperationDialogProps<TData> {
-  open: boolean;
-  onClose: () => void;
-
   color?: ThemeColor;
   inputColor?: ThemeColor;
   title: Text;
@@ -56,8 +54,6 @@ export interface OperationDialogProps<TData> {
 
 function OperationDialog<TData>(props: OperationDialogProps<TData>) {
   const {
-    open,
-    onClose,
     color,
     inputColor,
     title,
@@ -96,6 +92,8 @@ function OperationDialog<TData>(props: OperationDialogProps<TData>) {
         data: unknown;
       };
 
+  const dialogController = useDialogController();
+
   const [step, setStep] = useState<Step>({ type: "input" });
 
   const { inputGroupProps, hasErrorAndDirty, setAllDisabled, confirm } =
@@ -105,7 +103,7 @@ function OperationDialog<TData>(props: OperationDialogProps<TData>) {
 
   function close() {
     if (step.type !== "process") {
-      onClose();
+      dialogController.closeDialog();
       if (step.type === "success" && onSuccessAndClose) {
         onSuccessAndClose?.(step.data);
       }
@@ -118,21 +116,26 @@ function OperationDialog<TData>(props: OperationDialogProps<TData>) {
     const result = confirm();
     if (result.type === "ok") {
       setStep({ type: "process" });
+      dialogController.setCanSwitchDialog(false);
       setAllDisabled(true);
-      onProcess(result.values).then(
-        (d) => {
-          setStep({
-            type: "success",
-            data: d,
-          });
-        },
-        (e: unknown) => {
-          setStep({
-            type: "failure",
-            data: e,
-          });
-        },
-      );
+      onProcess(result.values)
+        .then(
+          (d) => {
+            setStep({
+              type: "success",
+              data: d,
+            });
+          },
+          (e: unknown) => {
+            setStep({
+              type: "failure",
+              data: e,
+            });
+          },
+        )
+        .finally(() => {
+          dialogController.setCanSwitchDialog(true);
+        });
     }
   }
 
@@ -214,7 +217,7 @@ function OperationDialog<TData>(props: OperationDialogProps<TData>) {
   }
 
   return (
-    <Dialog open={open} onClose={close}>
+    <Dialog>
       <DialogContainer title={title} titleColor={color} buttons={buttons}>
         {body}
       </DialogContainer>
diff --git a/FrontEnd/src/components/dialog/index.ts b/FrontEnd/src/components/dialog/index.ts
deleted file mode 100644
index 17db8fd0..00000000
--- a/FrontEnd/src/components/dialog/index.ts
+++ /dev/null
@@ -1,65 +0,0 @@
-import { useState } from "react";
-
-export { default as Dialog } from "./Dialog";
-export { default as FullPageDialog } from "./FullPageDialog";
-export { default as OperationDialog } from "./OperationDialog";
-export { default as ConfirmDialog } from "./ConfirmDialog";
-export { default as DialogContainer } from "./DialogContainer";
-
-type DialogMap<D extends string, V> = {
-  [K in D]: V;
-};
-
-type DialogKeyMap<D extends string> = DialogMap<D, number>;
-
-type DialogPropsMap<D extends string> = DialogMap<
-  D,
-  { key: number | string; open: boolean; onClose: () => void }
->;
-
-export function useDialog<D extends string>(
-  dialogs: D[],
-  options?: {
-    initDialog?: D | null;
-    onClose?: {
-      [K in D]?: () => void;
-    };
-  },
-): {
-  dialog: D | null;
-  switchDialog: (newDialog: D | null) => void;
-  dialogPropsMap: DialogPropsMap<D>;
-  createDialogSwitch: (newDialog: D | null) => () => void;
-} {
-  const [dialog, setDialog] = useState<D | null>(options?.initDialog ?? null);
-
-  const [dialogKeys, setDialogKeys] = useState<DialogKeyMap<D>>(
-    () => Object.fromEntries(dialogs.map((d) => [d, 0])) as DialogKeyMap<D>,
-  );
-
-  const switchDialog = (newDialog: D | null) => {
-    if (dialog !== null) {
-      setDialogKeys({ ...dialogKeys, [dialog]: dialogKeys[dialog] + 1 });
-    }
-    setDialog(newDialog);
-  };
-
-  return {
-    dialog,
-    switchDialog,
-    dialogPropsMap: Object.fromEntries(
-      dialogs.map((d) => [
-        d,
-        {
-          key: `${d}-${dialogKeys[d]}`,
-          open: dialog === d,
-          onClose: () => {
-            switchDialog(null);
-            options?.onClose?.[d]?.();
-          },
-        },
-      ]),
-    ) as DialogPropsMap<D>,
-    createDialogSwitch: (newDialog: D | null) => () => switchDialog(newDialog),
-  };
-}
diff --git a/FrontEnd/src/components/dialog/index.tsx b/FrontEnd/src/components/dialog/index.tsx
new file mode 100644
index 00000000..9ca06de2
--- /dev/null
+++ b/FrontEnd/src/components/dialog/index.tsx
@@ -0,0 +1,12 @@
+export { default as Dialog } from "./Dialog";
+export { default as FullPageDialog } from "./FullPageDialog";
+export { default as OperationDialog } from "./OperationDialog";
+export { default as ConfirmDialog } from "./ConfirmDialog";
+export { default as DialogContainer } from "./DialogContainer";
+
+export {
+  useDialog,
+  useDialogController,
+  useCloseDialog,
+  DialogProvider,
+} from "./DialogProvider";
diff --git a/FrontEnd/src/pages/setting/ChangeAvatarDialog.tsx b/FrontEnd/src/pages/setting/ChangeAvatarDialog.tsx
index 2fcfef2c..96ae971b 100644
--- a/FrontEnd/src/pages/setting/ChangeAvatarDialog.tsx
+++ b/FrontEnd/src/pages/setting/ChangeAvatarDialog.tsx
@@ -9,23 +9,21 @@ import { getHttpUserClient } from "~src/http/user";
 import { ImageCropper, useImageCrop } from "~src/components/ImageCropper";
 import BlobImage from "~src/components/BlobImage";
 import { ButtonRowV2 } from "~src/components/button";
-import { Dialog, DialogContainer } from "~src/components/dialog";
+import {
+  Dialog,
+  DialogContainer,
+  useDialogController,
+} from "~src/components/dialog";
 
 import "./ChangeAvatarDialog.css";
 
-interface ChangeAvatarDialogProps {
-  open: boolean;
-  onClose: () => void;
-}
-
-export default function ChangeAvatarDialog({
-  open,
-  onClose,
-}: ChangeAvatarDialogProps) {
+export default function ChangeAvatarDialog() {
   const c = useC();
 
   const user = useUser();
 
+  const controller = useDialogController();
+
   type State =
     | "select"
     | "crop"
@@ -49,11 +47,7 @@ export default function ChangeAvatarDialog({
     "settings.dialogChangeAvatar.prompt.select",
   );
 
-  const close = (): void => {
-    if (state !== "uploading") {
-      onClose();
-    }
-  };
+  const close = controller.closeDialog;
 
   const onSelectFile = (e: ChangeEvent<HTMLInputElement>): void => {
     const files = e.target.files;
@@ -96,6 +90,7 @@ export default function ChangeAvatarDialog({
     }
 
     setState("uploading");
+    controller.setCanSwitchDialog(false);
     getHttpUserClient()
       .putAvatar(user.username, resultBlob)
       .then(
@@ -106,7 +101,10 @@ export default function ChangeAvatarDialog({
           setState("error");
           setMessage("operationDialog.error");
         },
-      );
+      )
+      .finally(() => {
+        controller.setCanSwitchDialog(true);
+      });
   };
 
   const cancelButton = {
@@ -181,7 +179,7 @@ export default function ChangeAvatarDialog({
   };
 
   return (
-    <Dialog open={open} onClose={close}>
+    <Dialog>
       <DialogContainer
         title="settings.dialogChangeAvatar.title"
         titleColor="primary"
diff --git a/FrontEnd/src/pages/setting/ChangeNicknameDialog.tsx b/FrontEnd/src/pages/setting/ChangeNicknameDialog.tsx
index 843659ef..bd1eaa51 100644
--- a/FrontEnd/src/pages/setting/ChangeNicknameDialog.tsx
+++ b/FrontEnd/src/pages/setting/ChangeNicknameDialog.tsx
@@ -3,19 +3,11 @@ import { useUserLoggedIn } from "~src/services/user";
 
 import OperationDialog from "~src/components/dialog/OperationDialog";
 
-export interface ChangeNicknameDialogProps {
-  open: boolean;
-  onClose: () => void;
-}
-
-export default function ChangeNicknameDialog(props: ChangeNicknameDialogProps) {
-  const { open, onClose } = props;
-
+export default function ChangeNicknameDialog() {
   const user = useUserLoggedIn();
 
   return (
     <OperationDialog
-      open={open}
       title="settings.dialogChangeNickname.title"
       inputs={[
         {
@@ -29,7 +21,6 @@ export default function ChangeNicknameDialog(props: ChangeNicknameDialogProps) {
           nickname: newNickname,
         });
       }}
-      onClose={onClose}
     />
   );
 }
diff --git a/FrontEnd/src/pages/setting/ChangePasswordDialog.tsx b/FrontEnd/src/pages/setting/ChangePasswordDialog.tsx
index 946b9fbe..c3111ac8 100644
--- a/FrontEnd/src/pages/setting/ChangePasswordDialog.tsx
+++ b/FrontEnd/src/pages/setting/ChangePasswordDialog.tsx
@@ -5,22 +5,13 @@ import { userService } from "~src/services/user";
 
 import { OperationDialog } from "~src/components/dialog";
 
-interface ChangePasswordDialogProps {
-  open: boolean;
-  onClose: () => void;
-}
-
-export function ChangePasswordDialog(props: ChangePasswordDialogProps) {
-  const { open, onClose } = props;
-
+export function ChangePasswordDialog() {
   const navigate = useNavigate();
 
   const [redirect, setRedirect] = useState<boolean>(false);
 
   return (
     <OperationDialog
-      open={open}
-      onClose={onClose}
       title="settings.dialogChangePassword.title"
       color="danger"
       inputPrompt="settings.dialogChangePassword.prompt"
diff --git a/FrontEnd/src/pages/setting/index.tsx b/FrontEnd/src/pages/setting/index.tsx
index 918a77b5..4d2c28c7 100644
--- a/FrontEnd/src/pages/setting/index.tsx
+++ b/FrontEnd/src/pages/setting/index.tsx
@@ -14,7 +14,11 @@ import { pushAlert } from "~src/services/alert";
 
 import { useC, Text } from "~src/common";
 
-import { useDialog, ConfirmDialog } from "~src/components/dialog";
+import {
+  useDialog,
+  DialogProvider,
+  ConfirmDialog,
+} from "~src/components/dialog";
 import Card from "~src/components/Card";
 import Spinner from "~src/components/Spinner";
 import Page from "~src/components/Page";
@@ -140,7 +144,22 @@ function RegisterCodeSettingItem() {
   // undefined: loading
   const [registerCode, setRegisterCode] = useState<undefined | null | string>();
 
-  const [dialogOpen, setDialogOpen] = useState(false);
+  const { controller, createDialogSwitch } = useDialog({
+    confirm: (
+      <ConfirmDialog
+        title="settings.renewRegisterCode"
+        body="settings.renewRegisterCodeDesc"
+        onConfirm={() => {
+          if (user == null) throw new Error();
+          void getHttpUserClient()
+            .renewRegisterCode(user.username)
+            .then(() => {
+              setRegisterCode(undefined);
+            });
+        }}
+      />
+    ),
+  });
 
   useEffect(() => {
     setRegisterCode(undefined);
@@ -157,49 +176,34 @@ function RegisterCodeSettingItem() {
   }, [user, registerCode]);
 
   return (
-    <>
-      <SettingItemContainer
-        title="settings.myRegisterCode"
-        description="settings.myRegisterCodeDesc"
-        className="register-code-setting-item"
-        onClick={() => setDialogOpen(true)}
-      >
-        {registerCode === undefined ? (
-          <Spinner />
-        ) : registerCode === null ? (
-          <span>Noop</span>
-        ) : (
-          <code
-            className="register-code"
-            onClick={(event) => {
-              void navigator.clipboard.writeText(registerCode).then(() => {
-                pushAlert({
-                  type: "create",
-                  message: "settings.myRegisterCodeCopied",
-                });
+    <SettingItemContainer
+      title="settings.myRegisterCode"
+      description="settings.myRegisterCodeDesc"
+      className="register-code-setting-item"
+      onClick={createDialogSwitch("confirm")}
+    >
+      {registerCode === undefined ? (
+        <Spinner />
+      ) : registerCode === null ? (
+        <span>Noop</span>
+      ) : (
+        <code
+          className="register-code"
+          onClick={(event) => {
+            void navigator.clipboard.writeText(registerCode).then(() => {
+              pushAlert({
+                type: "create",
+                message: "settings.myRegisterCodeCopied",
               });
-              event.stopPropagation();
-            }}
-          >
-            {registerCode}
-          </code>
-        )}
-      </SettingItemContainer>
-      <ConfirmDialog
-        title="settings.renewRegisterCode"
-        body="settings.renewRegisterCodeDesc"
-        onClose={() => setDialogOpen(false)}
-        open={dialogOpen}
-        onConfirm={() => {
-          if (user == null) throw new Error();
-          void getHttpUserClient()
-            .renewRegisterCode(user.username)
-            .then(() => {
-              setRegisterCode(undefined);
             });
-        }}
-      />{" "}
-    </>
+            event.stopPropagation();
+          }}
+        >
+          {registerCode}
+        </code>
+      )}
+      <DialogProvider controller={controller} />
+    </SettingItemContainer>
   );
 }
 
@@ -240,12 +244,22 @@ export default function SettingPage() {
   const user = useUser();
   const navigate = useNavigate();
 
-  const { dialogPropsMap, createDialogSwitch } = useDialog([
-    "change-password",
-    "change-avatar",
-    "change-nickname",
-    "logout",
-  ]);
+  const { controller, createDialogSwitch } = useDialog({
+    "change-password": <ChangeNicknameDialog />,
+    "change-avatar": <ChangeAvatarDialog />,
+    "change-nickname": <ChangePasswordDialog />,
+    logout: (
+      <ConfirmDialog
+        title="settings.dialogConfirmLogout.title"
+        body="settings.dialogConfirmLogout.prompt"
+        onConfirm={() => {
+          void userService.logout().then(() => {
+            navigate("/");
+          });
+        }}
+      />
+    ),
+  });
 
   return (
     <Page noTopPadding>
@@ -275,23 +289,7 @@ export default function SettingPage() {
       <SettingSection title="settings.subheader.customization">
         <LanguageChangeSettingItem />
       </SettingSection>
-      <ChangePasswordDialog {...dialogPropsMap["change-password"]} />
-      {user && (
-        <>
-          <ConfirmDialog
-            title="settings.dialogConfirmLogout.title"
-            body="settings.dialogConfirmLogout.prompt"
-            onConfirm={() => {
-              void userService.logout().then(() => {
-                navigate("/");
-              });
-            }}
-            {...dialogPropsMap["logout"]}
-          />
-          <ChangeAvatarDialog {...dialogPropsMap["change-avatar"]} />
-          <ChangeNicknameDialog {...dialogPropsMap["change-nickname"]} />
-        </>
-      )}
+      <DialogProvider controller={controller} />
     </Page>
   );
 }
diff --git a/FrontEnd/src/pages/timeline/MarkdownPostEdit.tsx b/FrontEnd/src/pages/timeline/MarkdownPostEdit.tsx
index 43e81d67..fc7b882f 100644
--- a/FrontEnd/src/pages/timeline/MarkdownPostEdit.tsx
+++ b/FrontEnd/src/pages/timeline/MarkdownPostEdit.tsx
@@ -2,7 +2,10 @@ import * as React from "react";
 import classnames from "classnames";
 import { useTranslation } from "react-i18next";
 
-import { getHttpTimelineClient, HttpTimelinePostInfo } from "~src/http/timeline";
+import {
+  getHttpTimelineClient,
+  HttpTimelinePostInfo,
+} from "~src/http/timeline";
 
 import TimelinePostBuilder from "~src/services/TimelinePostBuilder";
 
@@ -13,6 +16,7 @@ import Spinner from "~src/components/Spinner";
 import IconButton from "~src/components/button/IconButton";
 
 import "./MarkdownPostEdit.css";
+import { DialogProvider, useDialog } from "~src/components/dialog";
 
 export interface MarkdownPostEditProps {
   owner: string;
@@ -39,12 +43,19 @@ const MarkdownPostEdit: React.FC<MarkdownPostEditProps> = ({
 
   const [process, setProcess] = React.useState<boolean>(false);
 
-  const [showLeaveConfirmDialog, setShowLeaveConfirmDialog] =
-    React.useState<boolean>(false);
+  const { controller, switchDialog } = useDialog({
+    "leave-confirm": (
+      <ConfirmDialog
+        onConfirm={onClose}
+        title="timeline.dropDraft"
+        body="timeline.confirmLeave"
+      />
+    ),
+  });
 
   const [text, _setText] = React.useState<string>("");
   const [images, _setImages] = React.useState<{ file: File; url: string }[]>(
-    []
+    [],
   );
   const [previewHtml, _setPreviewHtml] = React.useState<string>("");
 
@@ -92,7 +103,7 @@ const MarkdownPostEdit: React.FC<MarkdownPostEditProps> = ({
         timelineName,
         {
           dataList,
-        }
+        },
       );
       onPosted(post);
       onClose();
@@ -123,7 +134,7 @@ const MarkdownPostEdit: React.FC<MarkdownPostEditProps> = ({
                   if (canLeave) {
                     onClose();
                   } else {
-                    setShowLeaveConfirmDialog(true);
+                    switchDialog("leave-confirm");
                   }
                 }}
               />
@@ -167,7 +178,7 @@ const MarkdownPostEdit: React.FC<MarkdownPostEditProps> = ({
                       color="danger"
                       className={classnames(
                         "timeline-markdown-post-edit-image-delete-button",
-                        process && "d-none"
+                        process && "d-none",
                       )}
                       onClick={() => {
                         getBuilder().deleteImage(index);
@@ -201,13 +212,7 @@ const MarkdownPostEdit: React.FC<MarkdownPostEditProps> = ({
           },
         ]}
       />
-      <ConfirmDialog
-        onClose={() => setShowLeaveConfirmDialog(false)}
-        onConfirm={onClose}
-        open={showLeaveConfirmDialog}
-        title="timeline.dropDraft"
-        body="timeline.confirmLeave"
-      />
+      <DialogProvider controller={controller} />
     </>
   );
 };
diff --git a/FrontEnd/src/pages/timeline/TimelineCard.tsx b/FrontEnd/src/pages/timeline/TimelineCard.tsx
index f17a3ce9..133f1ef4 100644
--- a/FrontEnd/src/pages/timeline/TimelineCard.tsx
+++ b/FrontEnd/src/pages/timeline/TimelineCard.tsx
@@ -8,7 +8,7 @@ import { HttpTimelineInfo } from "~src/http/timeline";
 import { getHttpBookmarkClient } from "~src/http/bookmark";
 
 import { useMobile } from "~src/components/hooks";
-import { Dialog, useDialog } from "~src/components/dialog";
+import { Dialog, DialogProvider, useDialog } from "~src/components/dialog";
 import UserAvatar from "~src/components/user/UserAvatar";
 import PopupMenu from "~src/components/menu/PopupMenu";
 import FullPageDialog from "~src/components/dialog/FullPageDialog";
@@ -40,11 +40,17 @@ export default function TimelineCard(props: TimelinePageCardProps) {
 
   const isMobile = useMobile();
 
-  const { createDialogSwitch, dialogPropsMap } = useDialog([
-    "member",
-    "property",
-    "delete",
-  ]);
+  const { controller, createDialogSwitch } = useDialog({
+    member: (
+      <Dialog>
+        <TimelineMember timeline={timeline} onChange={onReload} />
+      </Dialog>
+    ),
+    property: (
+      <TimelinePropertyChangeDialog timeline={timeline} onChange={onReload} />
+    ),
+    delete: <TimelineDeleteDialog timeline={timeline} />,
+  });
 
   const content = (
     <div>
@@ -144,15 +150,7 @@ export default function TimelineCard(props: TimelinePageCardProps) {
       ) : (
         <div style={{ display: collapse ? "none" : "block" }}>{content}</div>
       )}
-      <Dialog {...dialogPropsMap["member"]}>
-        <TimelineMember timeline={timeline} onChange={onReload} />
-      </Dialog>
-      <TimelinePropertyChangeDialog
-        timeline={timeline}
-        onChange={onReload}
-        {...dialogPropsMap["property"]}
-      />
-      <TimelineDeleteDialog timeline={timeline} {...dialogPropsMap["delete"]} />
+      <DialogProvider controller={controller} />
     </Card>
   );
 }
diff --git a/FrontEnd/src/pages/timeline/TimelineDeleteDialog.tsx b/FrontEnd/src/pages/timeline/TimelineDeleteDialog.tsx
index a7209e75..630ce4ca 100644
--- a/FrontEnd/src/pages/timeline/TimelineDeleteDialog.tsx
+++ b/FrontEnd/src/pages/timeline/TimelineDeleteDialog.tsx
@@ -8,8 +8,6 @@ import OperationDialog from "~src/components/dialog/OperationDialog";
 
 interface TimelineDeleteDialog {
   timeline: HttpTimelineInfo;
-  open: boolean;
-  onClose: () => void;
 }
 
 const TimelineDeleteDialog: React.FC<TimelineDeleteDialog> = (props) => {
@@ -19,8 +17,6 @@ const TimelineDeleteDialog: React.FC<TimelineDeleteDialog> = (props) => {
 
   return (
     <OperationDialog
-      open={props.open}
-      onClose={props.onClose}
       title="timeline.deleteDialog.title"
       color="danger"
       inputPromptNode={
diff --git a/FrontEnd/src/pages/timeline/TimelinePostCreateView.tsx b/FrontEnd/src/pages/timeline/TimelinePostCreateView.tsx
index 3c41228a..3bc4dab3 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostCreateView.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostCreateView.tsx
@@ -88,7 +88,7 @@ function TimelinePostEditImage(props: TimelinePostEditImageProps) {
       />
       {file != null && !error && (
         <BlobImage
-          blob={file}
+          src={file}
           className="timeline-post-create-image"
           onLoad={() => onSelect(file)}
           onError={() => {
diff --git a/FrontEnd/src/pages/timeline/TimelinePostView.tsx b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
index 6b87ef2a..5de09b28 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostView.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
@@ -9,7 +9,7 @@ import { pushAlert } from "~src/services/alert";
 
 import { useClickOutside } from "~src/components/hooks";
 import UserAvatar from "~src/components/user/UserAvatar";
-import { useDialog } from "~src/components/dialog";
+import { DialogProvider, useDialog } from "~src/components/dialog";
 import FlatButton from "~src/components/button/FlatButton";
 import ConfirmDialog from "~src/components/dialog/ConfirmDialog";
 import TimelinePostContentView from "./TimelinePostContentView";
@@ -33,13 +33,33 @@ export default function TimelinePostView(props: TimelinePostViewProps) {
   const [operationMaskVisible, setOperationMaskVisible] =
     useState<boolean>(false);
 
-  const { switchDialog, dialogPropsMap } = useDialog(["delete"], {
-    onClose: {
-      delete: () => {
-        setOperationMaskVisible(false);
+  const { controller, switchDialog } = useDialog(
+    {
+      delete: (
+        <ConfirmDialog
+          title="timeline.post.deleteDialog.title"
+          body="timeline.post.deleteDialog.prompt"
+          onConfirm={() => {
+            void getHttpTimelineClient()
+              .deletePost(post.timelineOwnerV2, post.timelineNameV2, post.id)
+              .then(onDeleted, () => {
+                pushAlert({
+                  type: "danger",
+                  message: "timeline.deletePostFailed",
+                });
+              });
+          }}
+        />
+      ),
+    },
+    {
+      onClose: {
+        delete: () => {
+          setOperationMaskVisible(false);
+        },
       },
     },
-  });
+  );
 
   const [maskElement, setMaskElement] = useState<HTMLElement | null>(null);
   useClickOutside(maskElement, () => setOperationMaskVisible(false));
@@ -98,21 +118,7 @@ export default function TimelinePostView(props: TimelinePostViewProps) {
           </div>
         ) : null}
       </TimelinePostCard>
-      <ConfirmDialog
-        title="timeline.post.deleteDialog.title"
-        body="timeline.post.deleteDialog.prompt"
-        onConfirm={() => {
-          void getHttpTimelineClient()
-            .deletePost(post.timelineOwnerV2, post.timelineNameV2, post.id)
-            .then(onDeleted, () => {
-              pushAlert({
-                type: "danger",
-                message: "timeline.deletePostFailed",
-              });
-            });
-        }}
-        {...dialogPropsMap.delete}
-      />
+      <DialogProvider controller={controller} />
     </TimelinePostContainer>
   );
 }
diff --git a/FrontEnd/src/pages/timeline/TimelinePropertyChangeDialog.tsx b/FrontEnd/src/pages/timeline/TimelinePropertyChangeDialog.tsx
index afd83a5f..ee5388cb 100644
--- a/FrontEnd/src/pages/timeline/TimelinePropertyChangeDialog.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePropertyChangeDialog.tsx
@@ -11,8 +11,6 @@ import {
 import OperationDialog from "~src/components/dialog/OperationDialog";
 
 export interface TimelinePropertyChangeDialogProps {
-  open: boolean;
-  onClose: () => void;
   timeline: HttpTimelineInfo;
   onChange: () => void;
 }
@@ -63,8 +61,6 @@ const TimelinePropertyChangeDialog: React.FC<
           },
         },
       }}
-      open={props.open}
-      onClose={props.onClose}
       onProcess={({ title, visibility, description }) => {
         const req: HttpTimelinePatchRequest = {};
         if (title !== timeline.title) {
-- 
cgit v1.2.3


From fb64a8f3d4a7dd4035f50ccf2601ae0a683bd1b8 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Thu, 31 Aug 2023 01:50:40 +0800
Subject: ...

---
 FrontEnd/src/App.tsx                               |   2 +-
 FrontEnd/src/components/alert/AlertHost.tsx        | 126 ++++++++-------------
 FrontEnd/src/components/alert/AlertService.ts      | 111 ++++++++++++++++++
 FrontEnd/src/components/alert/alert.css            |  25 ++--
 FrontEnd/src/components/alert/index.ts             |   8 ++
 FrontEnd/src/pages/setting/index.tsx               |   4 +-
 FrontEnd/src/pages/timeline/TimelineCard.tsx       |   4 +-
 .../src/pages/timeline/TimelinePostCreateView.tsx  |   5 +-
 FrontEnd/src/pages/timeline/TimelinePostView.tsx   |   5 +-
 FrontEnd/src/services/user.ts                      |  15 ++-
 10 files changed, 190 insertions(+), 115 deletions(-)
 create mode 100644 FrontEnd/src/components/alert/AlertService.ts
 create mode 100644 FrontEnd/src/components/alert/index.ts

(limited to 'FrontEnd/src/pages/timeline/TimelinePostView.tsx')

diff --git a/FrontEnd/src/App.tsx b/FrontEnd/src/App.tsx
index b5b076ec..58463d08 100644
--- a/FrontEnd/src/App.tsx
+++ b/FrontEnd/src/App.tsx
@@ -10,7 +10,7 @@ import LoginPage from "./pages/login";
 import RegisterPage from "./pages/register";
 import TimelinePage from "./pages/timeline";
 import LoadingPage from "./pages/loading";
-import AlertHost from "./components/alert/AlertHost";
+import { AlertHost } from "./components/alert";
 
 export default function App() {
   return (
diff --git a/FrontEnd/src/components/alert/AlertHost.tsx b/FrontEnd/src/components/alert/AlertHost.tsx
index b234ac03..23f62472 100644
--- a/FrontEnd/src/components/alert/AlertHost.tsx
+++ b/FrontEnd/src/components/alert/AlertHost.tsx
@@ -1,95 +1,56 @@
-import * as React from "react";
-import without from "lodash/without";
-import { useTranslation } from "react-i18next";
+import { useEffect, useState } from "react";
 import classNames from "classnames";
 
-import { alertService, AlertInfoEx, AlertInfo } from "~src/services/alert";
-import { convertI18nText } from "~src/common";
-
+import { ThemeColor, useC, Text } from "../common";
 import IconButton from "../button/IconButton";
 
+import { alertService, AlertInfoWithId } from "./AlertService";
+
 import "./alert.css";
 
 interface AutoCloseAlertProps {
-  alert: AlertInfo;
-  close: () => void;
+  color: ThemeColor;
+  message: Text;
+  onDismiss?: () => void;
+  onIn?: () => void;
+  onOut?: () => void;
 }
 
-export const AutoCloseAlert: React.FC<AutoCloseAlertProps> = (props) => {
-  const { alert, close } = props;
-  const { dismissTime } = alert;
-
-  const { t } = useTranslation();
-
-  const timerTag = React.useRef<number | null>(null);
-  const closeHandler = React.useRef<(() => void) | null>(null);
-
-  React.useEffect(() => {
-    closeHandler.current = close;
-  }, [close]);
-
-  React.useEffect(() => {
-    const tag =
-      dismissTime === "never"
-        ? null
-        : typeof dismissTime === "number"
-        ? window.setTimeout(() => closeHandler.current?.(), dismissTime)
-        : window.setTimeout(() => closeHandler.current?.(), 5000);
-    timerTag.current = tag;
-    return () => {
-      if (tag != null) {
-        window.clearTimeout(tag);
-      }
-    };
-  }, [dismissTime]);
-
-  const cancelTimer = (): void => {
-    const { current: tag } = timerTag;
-    if (tag != null) {
-      window.clearTimeout(tag);
-    }
-  };
+function Alert({
+  color,
+  message,
+  onDismiss,
+  onIn,
+  onOut,
+}: AutoCloseAlertProps) {
+  const c = useC();
 
   return (
     <div
-      className={classNames(
-        "m-3 cru-alert",
-        "cru-" + (alert.type ?? "primary")
-      )}
-      onClick={cancelTimer}
+      className={classNames("cru-alert", `cru-theme-${color}`)}
+      onPointerEnter={onIn}
+      onPointerLeave={onOut}
     >
-      <div className="cru-alert-content">
-        {(() => {
-          const { message, customMessage } = alert;
-          if (customMessage != null) {
-            return customMessage;
-          } else {
-            return convertI18nText(message, t);
-          }
-        })()}
-      </div>
-      <div className="cru-alert-close-button-container">
-        <IconButton
-          icon="x"
-          className="cru-alert-close-button"
-          onClick={close}
-        />
-      </div>
+      <div className="cru-alert-message">{c(message)}</div>
+      <IconButton
+        icon="x"
+        color="danger"
+        className="cru-alert-close-button"
+        onClick={onDismiss}
+      />
     </div>
   );
-};
+}
 
-const AlertHost: React.FC = () => {
-  const [alerts, setAlerts] = React.useState<AlertInfoEx[]>([]);
+export default function AlertHost() {
+  const [alerts, setAlerts] = useState<AlertInfoWithId[]>([]);
 
-  React.useEffect(() => {
-    const consume = (alert: AlertInfoEx): void => {
-      setAlerts((old) => [...old, alert]);
-    };
+  useEffect(() => {
+    alertService.registerListener(setAlerts);
 
-    alertService.registerConsumer(consume);
     return () => {
-      alertService.unregisterConsumer(consume);
+      alertService.unregisterListener(setAlerts);
+      alert;
     };
   }, []);
 
@@ -97,17 +58,22 @@ const AlertHost: React.FC = () => {
     <div className="alert-container">
       {alerts.map((alert) => {
         return (
-          <AutoCloseAlert
+          <Alert
             key={alert.id}
-            alert={alert}
-            close={() => {
-              setAlerts((old) => without(old, alert));
+            message={alert.message}
+            color={alert.color ?? "primary"}
+            onIn={() => {
+              alertService.clearDismissTimer(alert.id);
+            }}
+            onOut={() => {
+              alertService.resetDismissTimer(alert.id);
+            }}
+            onDismiss={() => {
+              alertService.dismiss(alert.id);
             }}
           />
         );
       })}
     </div>
   );
-};
-
-export default AlertHost;
+}
diff --git a/FrontEnd/src/components/alert/AlertService.ts b/FrontEnd/src/components/alert/AlertService.ts
new file mode 100644
index 00000000..b3565b8a
--- /dev/null
+++ b/FrontEnd/src/components/alert/AlertService.ts
@@ -0,0 +1,111 @@
+import { ThemeColor, Text } from "../common";
+
+export interface AlertInfo {
+  color?: ThemeColor;
+  message: Text;
+  dismissTime?: number | "never";
+}
+
+export interface AlertInfoWithId extends AlertInfo {
+  id: number;
+}
+
+interface AlertServiceAlert extends AlertInfoWithId {
+  timerId: number | null;
+}
+
+export type AlertsListener = (alerts: AlertInfoWithId[]) => void;
+
+export class AlertService {
+  private listeners: AlertsListener[] = [];
+  private alerts: AlertServiceAlert[] = [];
+  private currentId = 1;
+
+  getAlert(alertId?: number | null | undefined): AlertServiceAlert | null {
+    for (const alert of this.alerts) {
+      if (alert.id === alertId) return alert;
+    }
+    return null;
+  }
+
+  registerListener(listener: AlertsListener): void {
+    this.listeners.push(listener);
+    listener(this.alerts);
+  }
+
+  unregisterListener(listener: AlertsListener): void {
+    this.listeners = this.listeners.filter((l) => l !== listener);
+  }
+
+  notify() {
+    for (const listener of this.listeners) {
+      listener(this.alerts);
+    }
+  }
+
+  push(alert: AlertInfo): void {
+    const newAlert: AlertServiceAlert = {
+      ...alert,
+      id: this.currentId++,
+      timerId: null,
+    };
+
+    this.alerts.push(newAlert);
+    this._resetDismissTimer(newAlert);
+
+    this.notify();
+  }
+
+  private _dismiss(alert: AlertServiceAlert) {
+    if (alert.timerId != null) {
+      window.clearTimeout(alert.timerId);
+    }
+    this.alerts = this.alerts.filter((a) => a !== alert);
+    this.notify();
+  }
+
+  dismiss(alertId?: number | null | undefined) {
+    const alert = this.getAlert(alertId);
+    if (alert != null) {
+      this._dismiss(alert);
+    }
+  }
+
+  private _clearDismissTimer(alert: AlertServiceAlert) {
+    if (alert.timerId != null) {
+      window.clearTimeout(alert.timerId);
+      alert.timerId = null;
+    }
+  }
+
+  clearDismissTimer(alertId?: number | null | undefined) {
+    const alert = this.getAlert(alertId);
+    if (alert != null) {
+      this._clearDismissTimer(alert);
+    }
+  }
+
+  private _resetDismissTimer(
+    alert: AlertServiceAlert,
+    dismissTime?: number | null | undefined,
+  ) {
+    this._clearDismissTimer(alert);
+
+    const realDismissTime = dismissTime ?? alert.dismissTime;
+
+    if (typeof realDismissTime === "number") {
+      alert.timerId = window.setTimeout(() => {
+        this._dismiss(alert);
+      }, realDismissTime);
+    }
+  }
+
+  resetDismissTimer(alertId?: number | null | undefined) {
+    const alert = this.getAlert(alertId);
+    if (alert != null) {
+      this._resetDismissTimer(alert);
+    }
+  }
+}
+
+export const alertService = new AlertService();
diff --git a/FrontEnd/src/components/alert/alert.css b/FrontEnd/src/components/alert/alert.css
index 54c2b87f..063af933 100644
--- a/FrontEnd/src/components/alert/alert.css
+++ b/FrontEnd/src/components/alert/alert.css
@@ -5,29 +5,18 @@
 
 .cru-alert {
   border-radius: 5px;
-  border: var(--cru-key-color) 1px solid;
-  color: var(--cru-key-t-color);
-  background-color: var(--cru-key-b1-color);
+  border: var(--cru-theme-color) 1px solid;
+  color: var(--cru-text-primary-color);
+  background-color: var(--cru-container-background-color);
 
-  display: flex;
-  overflow: hidden;
-}
-
-.cru-alert-content {
   padding: 0.5em 2em;
-}
 
-.cru-alert-close-button-container {
-  flex-shrink: 0;
-  margin-left: auto;
-  width: 2em;
-  text-align: center;
   display: flex;
   align-items: center;
-  justify-content: center;
-  background-color: var(--cru-key-t-color);
 }
 
+.cru-alert-message {}
+
 .cru-alert-close-button {
-  color: var(--cru-key-color);
-}
+  margin-left: auto;
+}
\ No newline at end of file
diff --git a/FrontEnd/src/components/alert/index.ts b/FrontEnd/src/components/alert/index.ts
new file mode 100644
index 00000000..1be0c2ec
--- /dev/null
+++ b/FrontEnd/src/components/alert/index.ts
@@ -0,0 +1,8 @@
+import { alertService, AlertInfo } from "./AlertService";
+import { default as AlertHost } from "./AlertHost";
+
+export { alertService, AlertHost };
+
+export function pushAlert(alert: AlertInfo): void {
+  alertService.push(alert);
+}
diff --git a/FrontEnd/src/pages/setting/index.tsx b/FrontEnd/src/pages/setting/index.tsx
index d2333134..25434339 100644
--- a/FrontEnd/src/pages/setting/index.tsx
+++ b/FrontEnd/src/pages/setting/index.tsx
@@ -10,10 +10,10 @@ import classNames from "classnames";
 
 import { useUser, userService } from "~src/services/user";
 import { getHttpUserClient } from "~src/http/user";
-import { pushAlert } from "~src/services/alert";
 
 import { useC, Text } from "~src/common";
 
+import { pushAlert } from "~src/components/alert";
 import {
   useDialog,
   DialogProvider,
@@ -192,7 +192,7 @@ function RegisterCodeSettingItem() {
           onClick={(event) => {
             void navigator.clipboard.writeText(registerCode).then(() => {
               pushAlert({
-                type: "create",
+                color: "create",
                 message: "settings.myRegisterCodeCopied",
               });
             });
diff --git a/FrontEnd/src/pages/timeline/TimelineCard.tsx b/FrontEnd/src/pages/timeline/TimelineCard.tsx
index 44dfbf9e..1e0e9b75 100644
--- a/FrontEnd/src/pages/timeline/TimelineCard.tsx
+++ b/FrontEnd/src/pages/timeline/TimelineCard.tsx
@@ -2,11 +2,11 @@ import { useState } from "react";
 import { HubConnectionState } from "@microsoft/signalr";
 
 import { useUser } from "~src/services/user";
-import { pushAlert } from "~src/services/alert";
 
 import { HttpTimelineInfo } from "~src/http/timeline";
 import { getHttpBookmarkClient } from "~src/http/bookmark";
 
+import { pushAlert } from "~src/components/alert";
 import { useMobile } from "~src/components/hooks";
 import { Dialog, DialogProvider, useDialog } from "~src/components/dialog";
 import UserAvatar from "~src/components/user/UserAvatar";
@@ -89,7 +89,7 @@ export default function TimelineCard(props: TimelinePageCardProps) {
                     message: timeline.isBookmark
                       ? "timeline.removeBookmarkFail"
                       : "timeline.addBookmarkFail",
-                    type: "danger",
+                    color: "danger",
                   });
                 });
             }}
diff --git a/FrontEnd/src/pages/timeline/TimelinePostCreateView.tsx b/FrontEnd/src/pages/timeline/TimelinePostCreateView.tsx
index 3bc4dab3..70925cd9 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostCreateView.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostCreateView.tsx
@@ -10,10 +10,9 @@ import {
   HttpTimelinePostPostRequestData,
 } from "~src/http/timeline";
 
-import { pushAlert } from "~src/services/alert";
-
 import base64 from "~src/utilities/base64";
 
+import { pushAlert } from "~src/components/alert";
 import BlobImage from "~src/components/BlobImage";
 import LoadingButton from "~src/components/button/LoadingButton";
 import PopupMenu from "~src/components/menu/PopupMenu";
@@ -141,7 +140,7 @@ function TimelinePostEdit(props: TimelinePostEditProps) {
 
   const onPostError = (): void => {
     pushAlert({
-      type: "danger",
+      color: "danger",
       message: "timeline.sendPostFailed",
     });
   };
diff --git a/FrontEnd/src/pages/timeline/TimelinePostView.tsx b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
index 5de09b28..b09fe6f8 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostView.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
@@ -5,8 +5,7 @@ import {
   HttpTimelinePostInfo,
 } from "~src/http/timeline";
 
-import { pushAlert } from "~src/services/alert";
-
+import { pushAlert } from "~src/components/alert";
 import { useClickOutside } from "~src/components/hooks";
 import UserAvatar from "~src/components/user/UserAvatar";
 import { DialogProvider, useDialog } from "~src/components/dialog";
@@ -44,7 +43,7 @@ export default function TimelinePostView(props: TimelinePostViewProps) {
               .deletePost(post.timelineOwnerV2, post.timelineNameV2, post.id)
               .then(onDeleted, () => {
                 pushAlert({
-                  type: "danger",
+                  color: "danger",
                   message: "timeline.deletePostFailed",
                 });
               });
diff --git a/FrontEnd/src/services/user.ts b/FrontEnd/src/services/user.ts
index ddba4dab..5f682a36 100644
--- a/FrontEnd/src/services/user.ts
+++ b/FrontEnd/src/services/user.ts
@@ -8,14 +8,17 @@ import { setHttpToken, axios, HttpBadRequestError } from "~src/http/common";
 import { getHttpTokenClient } from "~src/http/token";
 import { getHttpUserClient, HttpUser, UserPermission } from "~src/http/user";
 
-import { pushAlert } from "./alert";
+import { pushAlert } from "~src/components/alert";
 
 interface IAuthUser extends HttpUser {
   token: string;
 }
 
 export class AuthUser implements IAuthUser {
-  constructor(user: HttpUser, public token: string) {
+  constructor(
+    user: HttpUser,
+    public token: string,
+  ) {
     this.uniqueId = user.uniqueId;
     this.username = user.username;
     this.permissions = user.permissions;
@@ -61,7 +64,7 @@ export class UserService {
       if (e.isAxiosError && e.response && e.response.status === 401) {
         this.userSubject.next(null);
         pushAlert({
-          type: "danger",
+          color: "danger",
           message: "user.tokenInvalid",
         });
       } else {
@@ -97,11 +100,11 @@ export class UserService {
               localStorage.removeItem(USER_STORAGE_KEY);
               this.userSubject.next(null);
               pushAlert({
-                type: "danger",
+                color: "danger",
                 message: "user.tokenInvalid",
               });
             }
-          }
+          },
         );
     }
   }
@@ -118,7 +121,7 @@ export class UserService {
 
   async login(
     credentials: LoginCredentials,
-    rememberMe: boolean
+    rememberMe: boolean,
   ): Promise<void> {
     if (this.currentUser) {
       throw new UiLogicError("Already login.");
-- 
cgit v1.2.3


From bdc69c18c1986544497b6974ffe5d8e073e4be6d Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Thu, 14 Sep 2023 18:58:44 +0800
Subject: ...

---
 FrontEnd/cspell.json                               |   3 +-
 FrontEnd/src/components/hooks/index.ts             |   1 +
 .../components/hooks/useAutoUnsubscribePromise.tsx |  23 +++
 FrontEnd/src/components/index.css                  |   1 +
 .../src/pages/timeline/TimelineDeleteDialog.tsx    |  11 +-
 .../src/pages/timeline/TimelinePostContentView.tsx | 190 ---------------------
 FrontEnd/src/pages/timeline/TimelinePostView.tsx   |   2 +-
 FrontEnd/src/pages/timeline/view/ImagePostView.css |   0
 FrontEnd/src/pages/timeline/view/ImagePostView.tsx |  38 +++++
 .../src/pages/timeline/view/MarkdownPostView.css   |   4 +
 .../src/pages/timeline/view/MarkdownPostView.tsx   |  60 +++++++
 .../src/pages/timeline/view/PlainTextPostView.css  |   0
 .../src/pages/timeline/view/PlainTextPostView.tsx  |  50 ++++++
 .../timeline/view/TimelinePostContentView.tsx      |  37 ++++
 14 files changed, 221 insertions(+), 199 deletions(-)
 create mode 100644 FrontEnd/src/components/hooks/useAutoUnsubscribePromise.tsx
 delete mode 100644 FrontEnd/src/pages/timeline/TimelinePostContentView.tsx
 create mode 100644 FrontEnd/src/pages/timeline/view/ImagePostView.css
 create mode 100644 FrontEnd/src/pages/timeline/view/ImagePostView.tsx
 create mode 100644 FrontEnd/src/pages/timeline/view/MarkdownPostView.css
 create mode 100644 FrontEnd/src/pages/timeline/view/MarkdownPostView.tsx
 create mode 100644 FrontEnd/src/pages/timeline/view/PlainTextPostView.css
 create mode 100644 FrontEnd/src/pages/timeline/view/PlainTextPostView.tsx
 create mode 100644 FrontEnd/src/pages/timeline/view/TimelinePostContentView.tsx

(limited to 'FrontEnd/src/pages/timeline/TimelinePostView.tsx')

diff --git a/FrontEnd/cspell.json b/FrontEnd/cspell.json
index a2e150c9..1d9c118a 100644
--- a/FrontEnd/cspell.json
+++ b/FrontEnd/cspell.json
@@ -7,6 +7,7 @@
   "words": [
     "languagedetector",
     "popperjs",
-    "signalr"
+    "signalr",
+    "webp"
   ]
 }
diff --git a/FrontEnd/src/components/hooks/index.ts b/FrontEnd/src/components/hooks/index.ts
index 771b0e2a..98ce729e 100644
--- a/FrontEnd/src/components/hooks/index.ts
+++ b/FrontEnd/src/components/hooks/index.ts
@@ -2,3 +2,4 @@ export { useMobile } from "./responsive";
 export { default as useClickOutside } from "./useClickOutside";
 export { default as useScrollToBottom } from "./useScrollToBottom";
 export { default as useWindowLeave } from "./useWindowLeave";
+export { default as useAutoUnsubscribePromise } from "./useAutoUnsubscribePromise";
diff --git a/FrontEnd/src/components/hooks/useAutoUnsubscribePromise.tsx b/FrontEnd/src/components/hooks/useAutoUnsubscribePromise.tsx
new file mode 100644
index 00000000..78e21151
--- /dev/null
+++ b/FrontEnd/src/components/hooks/useAutoUnsubscribePromise.tsx
@@ -0,0 +1,23 @@
+import { useEffect, DependencyList } from "react";
+
+export default function useAutoUnsubscribePromise<T>(
+  promiseGenerator: () => Promise<T> | null | undefined,
+  resultHandler: (data: T) => void,
+  dependencies?: DependencyList | undefined,
+) {
+  useEffect(() => {
+    let subscribe = true;
+    const promise = promiseGenerator();
+    if (promise) {
+      void promise.then((data) => {
+        if (subscribe) {
+          resultHandler(data);
+        }
+      });
+
+      return () => {
+        subscribe = false;
+      };
+    }
+  }, dependencies);
+}
diff --git a/FrontEnd/src/components/index.css b/FrontEnd/src/components/index.css
index de156e0e..83b48318 100644
--- a/FrontEnd/src/components/index.css
+++ b/FrontEnd/src/components/index.css
@@ -16,6 +16,7 @@ body {
 textarea {
   transition: border-color 0.3s;
   border-color: var(--cru-text-minor-color);
+  background: var(--cru-background-color);
 }
 
 textarea:hover {
diff --git a/FrontEnd/src/pages/timeline/TimelineDeleteDialog.tsx b/FrontEnd/src/pages/timeline/TimelineDeleteDialog.tsx
index 630ce4ca..d1af364b 100644
--- a/FrontEnd/src/pages/timeline/TimelineDeleteDialog.tsx
+++ b/FrontEnd/src/pages/timeline/TimelineDeleteDialog.tsx
@@ -1,20 +1,17 @@
-import * as React from "react";
 import { useNavigate } from "react-router-dom";
 import { Trans } from "react-i18next";
 
 import { getHttpTimelineClient, HttpTimelineInfo } from "~src/http/timeline";
 
-import OperationDialog from "~src/components/dialog/OperationDialog";
+import { OperationDialog } from "~src/components/dialog";
 
 interface TimelineDeleteDialog {
   timeline: HttpTimelineInfo;
 }
 
-const TimelineDeleteDialog: React.FC<TimelineDeleteDialog> = (props) => {
+export default function TimelineDeleteDialog({ timeline }: TimelineDeleteDialog) {
   const navigate = useNavigate();
 
-  const { timeline } = props;
-
   return (
     <OperationDialog
       title="timeline.deleteDialog.title"
@@ -24,7 +21,7 @@ const TimelineDeleteDialog: React.FC<TimelineDeleteDialog> = (props) => {
           i18nKey="timeline.deleteDialog.inputPrompt"
           values={{ name: timeline.nameV2 }}
         >
-          0<code className="mx-2">1</code>2
+          0<code>1</code>2
         </Trans>
       }
       inputs={{
@@ -54,4 +51,4 @@ const TimelineDeleteDialog: React.FC<TimelineDeleteDialog> = (props) => {
   );
 };
 
-export default TimelineDeleteDialog;
+TimelineDeleteDialog;
diff --git a/FrontEnd/src/pages/timeline/TimelinePostContentView.tsx b/FrontEnd/src/pages/timeline/TimelinePostContentView.tsx
deleted file mode 100644
index 6c0d7387..00000000
--- a/FrontEnd/src/pages/timeline/TimelinePostContentView.tsx
+++ /dev/null
@@ -1,190 +0,0 @@
-import * as React from "react";
-import classnames from "classnames";
-import { marked } from "marked";
-
-import { UiLogicError } from "~src/common";
-
-import { HttpNetworkError } from "~src/http/common";
-import { getHttpTimelineClient, HttpTimelinePostInfo } from "~src/http/timeline";
-
-import { useUser } from "~src/services/user";
-
-import Skeleton from "~src/components/Skeleton";
-import LoadFailReload from "~src/components/LoadFailReload";
-
-const TextView: React.FC<TimelinePostContentViewProps> = (props) => {
-  const { post, className, style } = props;
-
-  const [text, setText] = React.useState<string | null>(null);
-  const [error, setError] = React.useState<"offline" | "error" | null>(null);
-
-  const [reloadKey, setReloadKey] = React.useState<number>(0);
-
-  React.useEffect(() => {
-    let subscribe = true;
-
-    setText(null);
-    setError(null);
-
-    void getHttpTimelineClient()
-      .getPostDataAsString(post.timelineOwnerV2, post.timelineNameV2, post.id)
-      .then(
-        (data) => {
-          if (subscribe) setText(data);
-        },
-        (error) => {
-          if (subscribe) {
-            if (error instanceof HttpNetworkError) {
-              setError("offline");
-            } else {
-              setError("error");
-            }
-          }
-        },
-      );
-
-    return () => {
-      subscribe = false;
-    };
-  }, [post.timelineOwnerV2, post.timelineNameV2, post.id, reloadKey]);
-
-  if (error != null) {
-    return (
-      <LoadFailReload
-        className={className}
-        style={style}
-        onReload={() => setReloadKey(reloadKey + 1)}
-      />
-    );
-  } else if (text == null) {
-    return <Skeleton />;
-  } else {
-    return (
-      <div className={className} style={style}>
-        {text}
-      </div>
-    );
-  }
-};
-
-const ImageView: React.FC<TimelinePostContentViewProps> = (props) => {
-  const { post, className, style } = props;
-
-  useUser();
-
-  return (
-    <img
-      src={getHttpTimelineClient().generatePostDataUrl(
-        post.timelineOwnerV2,
-        post.timelineNameV2,
-        post.id,
-      )}
-      className={classnames(className, "timeline-content-image")}
-      style={style}
-    />
-  );
-};
-
-const MarkdownView: React.FC<TimelinePostContentViewProps> = (props) => {
-  const { post, className, style } = props;
-
-  const [markdown, setMarkdown] = React.useState<string | null>(null);
-  const [error, setError] = React.useState<"offline" | "error" | null>(null);
-
-  const [reloadKey, setReloadKey] = React.useState<number>(0);
-
-  React.useEffect(() => {
-    let subscribe = true;
-
-    setMarkdown(null);
-    setError(null);
-
-    void getHttpTimelineClient()
-      .getPostDataAsString(post.timelineOwnerV2, post.timelineNameV2, post.id)
-      .then(
-        (data) => {
-          if (subscribe) setMarkdown(data);
-        },
-        (error) => {
-          if (subscribe) {
-            if (error instanceof HttpNetworkError) {
-              setError("offline");
-            } else {
-              setError("error");
-            }
-          }
-        },
-      );
-
-    return () => {
-      subscribe = false;
-    };
-  }, [post.timelineOwnerV2, post.timelineNameV2, post.id, reloadKey]);
-
-  const markdownHtml = React.useMemo<string | null>(() => {
-    if (markdown == null) return null;
-    return marked.parse(markdown, {
-      mangle: false,
-      headerIds: false,
-    });
-  }, [markdown]);
-
-  if (error != null) {
-    return (
-      <LoadFailReload
-        className={className}
-        style={style}
-        onReload={() => setReloadKey(reloadKey + 1)}
-      />
-    );
-  } else if (markdown == null) {
-    return <Skeleton />;
-  } else {
-    if (markdownHtml == null) {
-      throw new UiLogicError("Markdown is not null but markdown html is.");
-    }
-    return (
-      <div
-        className={classnames(className, "markdown-container")}
-        style={style}
-        dangerouslySetInnerHTML={{
-          __html: markdownHtml,
-        }}
-      />
-    );
-  }
-};
-
-export interface TimelinePostContentViewProps {
-  post: HttpTimelinePostInfo;
-  className?: string;
-  style?: React.CSSProperties;
-}
-
-const viewMap: Record<string, React.FC<TimelinePostContentViewProps>> = {
-  "text/plain": TextView,
-  "text/markdown": MarkdownView,
-  "image/png": ImageView,
-  "image/jpeg": ImageView,
-  "image/gif": ImageView,
-  "image/webp": ImageView,
-};
-
-const TimelinePostContentView: React.FC<TimelinePostContentViewProps> = (
-  props,
-) => {
-  const { post, className, style } = props;
-
-  const type = post.dataList[0].kind;
-
-  if (type in viewMap) {
-    const View = viewMap[type];
-    return <View post={post} className={className} style={style} />;
-  } else {
-    // TODO: i18n
-    console.error("Unknown post type", post);
-    return <div>Error, unknown post type!</div>;
-  }
-};
-
-export default TimelinePostContentView;
diff --git a/FrontEnd/src/pages/timeline/TimelinePostView.tsx b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
index b09fe6f8..4f0460ff 100644
--- a/FrontEnd/src/pages/timeline/TimelinePostView.tsx
+++ b/FrontEnd/src/pages/timeline/TimelinePostView.tsx
@@ -11,7 +11,7 @@ import UserAvatar from "~src/components/user/UserAvatar";
 import { DialogProvider, useDialog } from "~src/components/dialog";
 import FlatButton from "~src/components/button/FlatButton";
 import ConfirmDialog from "~src/components/dialog/ConfirmDialog";
-import TimelinePostContentView from "./TimelinePostContentView";
+import TimelinePostContentView from "./view/TimelinePostContentView";
 import IconButton from "~src/components/button/IconButton";
 
 import TimelinePostContainer from "./TimelinePostContainer";
diff --git a/FrontEnd/src/pages/timeline/view/ImagePostView.css b/FrontEnd/src/pages/timeline/view/ImagePostView.css
new file mode 100644
index 00000000..e69de29b
diff --git a/FrontEnd/src/pages/timeline/view/ImagePostView.tsx b/FrontEnd/src/pages/timeline/view/ImagePostView.tsx
new file mode 100644
index 00000000..85179475
--- /dev/null
+++ b/FrontEnd/src/pages/timeline/view/ImagePostView.tsx
@@ -0,0 +1,38 @@
+import { useEffect, useState } from "react";
+import classNames from "classnames";
+
+import {
+  HttpTimelinePostInfo,
+  getHttpTimelineClient,
+} from "~src/http/timeline";
+
+import "./ImagePostView.css";
+
+interface ImagePostViewProps {
+  post?: HttpTimelinePostInfo;
+  className?: string;
+}
+
+export default function ImagePostView({ post, className }: ImagePostViewProps) {
+  const [url, setUrl] = useState<string | null>(null);
+
+  useEffect(() => {
+    if (post) {
+      setUrl(
+        getHttpTimelineClient().generatePostDataUrl(
+          post.timelineOwnerV2,
+          post.timelineNameV2,
+          post.id,
+        ),
+      );
+    } else {
+      setUrl(null);
+    }
+  }, [post]);
+
+  return (
+    <div className={classNames("timeline-view-image-container", className)}>
+      <img src={url ?? undefined} className="timeline-view-image" />
+    </div>
+  );
+}
diff --git a/FrontEnd/src/pages/timeline/view/MarkdownPostView.css b/FrontEnd/src/pages/timeline/view/MarkdownPostView.css
new file mode 100644
index 00000000..48a893eb
--- /dev/null
+++ b/FrontEnd/src/pages/timeline/view/MarkdownPostView.css
@@ -0,0 +1,4 @@
+.timeline-view-markdown img {
+  max-width: 100%;
+  max-height: 200px;
+}
diff --git a/FrontEnd/src/pages/timeline/view/MarkdownPostView.tsx b/FrontEnd/src/pages/timeline/view/MarkdownPostView.tsx
new file mode 100644
index 00000000..caf6eef0
--- /dev/null
+++ b/FrontEnd/src/pages/timeline/view/MarkdownPostView.tsx
@@ -0,0 +1,60 @@
+import { useMemo, useState } from "react";
+import { marked } from "marked";
+import classNames from "classnames";
+
+import {
+  HttpTimelinePostInfo,
+  getHttpTimelineClient,
+} from "~src/http/timeline";
+
+import { useAutoUnsubscribePromise } from "~src/components/hooks";
+import Skeleton from "~src/components/Skeleton";
+
+import "./MarkdownPostView.css";
+
+interface MarkdownPostViewProps {
+  post?: HttpTimelinePostInfo;
+  className?: string;
+}
+
+export default function MarkdownPostView({
+  post,
+  className,
+}: MarkdownPostViewProps) {
+  const [markdown, setMarkdown] = useState<string | null>(null);
+
+  useAutoUnsubscribePromise(
+    () => {
+      if (post) {
+        return getHttpTimelineClient().getPostDataAsString(
+          post.timelineOwnerV2,
+          post.timelineNameV2,
+          post.id,
+        );
+      }
+    },
+    setMarkdown,
+    [post],
+  );
+
+  const markdownHtml = useMemo<string | null>(() => {
+    if (markdown == null) return null;
+    return marked.parse(markdown, {
+      mangle: false,
+      headerIds: false,
+    });
+  }, [markdown]);
+
+  return (
+    <div className={classNames("timeline-view-markdown-container", className)}>
+      {markdownHtml == null ? (
+        <Skeleton />
+      ) : (
+        <div
+          className="timeline-view-markdown"
+          dangerouslySetInnerHTML={{ __html: markdownHtml }}
+        />
+      )}
+    </div>
+  );
+}
diff --git a/FrontEnd/src/pages/timeline/view/PlainTextPostView.css b/FrontEnd/src/pages/timeline/view/PlainTextPostView.css
new file mode 100644
index 00000000..e69de29b
diff --git a/FrontEnd/src/pages/timeline/view/PlainTextPostView.tsx b/FrontEnd/src/pages/timeline/view/PlainTextPostView.tsx
new file mode 100644
index 00000000..b964187d
--- /dev/null
+++ b/FrontEnd/src/pages/timeline/view/PlainTextPostView.tsx
@@ -0,0 +1,50 @@
+import { useState } from "react";
+import classNames from "classnames";
+
+import {
+  HttpTimelinePostInfo,
+  getHttpTimelineClient,
+} from "~src/http/timeline";
+
+import Skeleton from "~src/components/Skeleton";
+import { useAutoUnsubscribePromise } from "~src/components/hooks";
+
+import "./PlainTextPostView.css";
+
+interface PlainTextPostViewProps {
+  post?: HttpTimelinePostInfo;
+  className?: string;
+}
+
+export default function PlainTextPostView({
+  post,
+  className,
+}: PlainTextPostViewProps) {
+  const [text, setText] = useState<string | null>(null);
+
+  useAutoUnsubscribePromise(
+    () => {
+      if (post) {
+        return getHttpTimelineClient().getPostDataAsString(
+          post.timelineOwnerV2,
+          post.timelineNameV2,
+          post.id,
+        );
+      }
+    },
+    setText,
+    [post],
+  );
+
+  return (
+    <div
+      className={classNames("timeline-view-plain-text-container", className)}
+    >
+      {text == null ? (
+        <Skeleton />
+      ) : (
+        <div className="timeline-view-plain-text">{text}</div>
+      )}
+    </div>
+  );
+}
diff --git a/FrontEnd/src/pages/timeline/view/TimelinePostContentView.tsx b/FrontEnd/src/pages/timeline/view/TimelinePostContentView.tsx
new file mode 100644
index 00000000..851a9a33
--- /dev/null
+++ b/FrontEnd/src/pages/timeline/view/TimelinePostContentView.tsx
@@ -0,0 +1,37 @@
+import ImagePostView from "./ImagePostView";
+import MarkdownPostView from "./MarkdownPostView";
+import PlainTextPostView from "./PlainTextPostView";
+
+import type { HttpTimelinePostInfo } from "~src/http/timeline";
+
+interface TimelinePostContentViewProps {
+  post?: HttpTimelinePostInfo;
+  className?: string;
+}
+
+const viewMap: Record<string, React.FC<TimelinePostContentViewProps>> = {
+  "text/plain": PlainTextPostView,
+  "text/markdown": MarkdownPostView,
+  "image/png": ImagePostView,
+  "image/jpeg": ImagePostView,
+  "image/gif": ImagePostView,
+  "image/webp": ImagePostView,
+};
+
+export default function TimelinePostContentView({
+  post,
+  className,
+}: TimelinePostContentViewProps) {
+  if (post == null) {
+    return <div />;
+  }
+
+  const type = post.dataList[0].kind;
+
+  if (type in viewMap) {
+    const View = viewMap[type];
+    return <View post={post} className={className} />;
+  }
+
+  return <div>Unknown post type.</div>;
+}
-- 
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