1 files changed, 236 insertions, 0 deletions
diff --git a/Timeline/ClientApp/src/app/timeline/TimelinePageTemplateUI.tsx b/Timeline/ClientApp/src/app/timeline/TimelinePageTemplateUI.tsx
new file mode 100644
index 00000000..4b3b3096
--- /dev/null
+++ b/Timeline/ClientApp/src/app/timeline/TimelinePageTemplateUI.tsx
@@ -0,0 +1,236 @@
+import React from 'react';
+import { Spinner } from 'reactstrap';
+import { useTranslation } from 'react-i18next';
+import { fromEvent } from 'rxjs';
+import Svg from 'react-inlinesvg';
+
+import arrowsAngleContractIcon from 'bootstrap-icons/icons/arrows-angle-contract.svg';
+import arrowsAngleExpandIcon from 'bootstrap-icons/icons/arrows-angle-expand.svg';
+
+import { getAlertHost } from '../common/alert-service';
+
+import Timeline, {
+  TimelinePostInfoEx,
+  TimelineDeleteCallback,
+} from './Timeline';
+import AppBar from '../common/AppBar';
+import TimelinePostEdit, { TimelinePostSendCallback } from './TimelinePostEdit';
+import { useEventEmiiter } from '../common';
+import { TimelineInfo } from '../data/timeline';
+
+export interface TimelineCardComponentProps<TManageItems> {
+  timeline: TimelineInfo;
+  onManage?: (item: TManageItems | 'property') => void;
+  onMember: () => void;
+  className?: string;
+  onHeight?: (height: number) => void;
+}
+
+export interface TimelinePageTemplateUIProps<TManageItems> {
+  avatarKey?: string | number;
+  timeline?: TimelineInfo;
+  posts?: TimelinePostInfoEx[] | 'forbid';
+  CardComponent: React.ComponentType<TimelineCardComponentProps<TManageItems>>;
+  onMember: () => void;
+  onManage?: (item: TManageItems | 'property') => void;
+  onPost?: TimelinePostSendCallback;
+  onDelete: TimelineDeleteCallback;
+  error?: string;
+}
+
+export default function TimelinePageTemplateUI<TManageItems>(
+  props: TimelinePageTemplateUIProps<TManageItems>
+): React.ReactElement | null {
+  const { timeline } = props;
+
+  const { t } = useTranslation();
+
+  const bottomSpaceRef = React.useRef<HTMLDivElement | null>(null);
+
+  const onPostEditHeightChange = React.useCallback((height: number): void => {
+    const { current: bottomSpaceDiv } = bottomSpaceRef;
+    if (bottomSpaceDiv != null) {
+      bottomSpaceDiv.style.height = `${height}px`;
+    }
+    if (height === 0) {
+      const alertHost = getAlertHost();
+      if (alertHost != null) {
+        alertHost.style.removeProperty('margin-bottom');
+      }
+    } else {
+      const alertHost = getAlertHost();
+      if (alertHost != null) {
+        alertHost.style.marginBottom = `${height}px`;
+      }
+    }
+  }, []);
+
+  const timelineRef = React.useRef<HTMLDivElement | null>(null);
+
+  const [getResizeEvent, triggerResizeEvent] = useEventEmiiter();
+
+  React.useEffect(() => {
+    const { current: timelineElement } = timelineRef;
+    if (timelineElement != null) {
+      let loadingScrollToBottom = true;
+      let pinBottom = false;
+
+      const isAtBottom = (): boolean =>
+        window.innerHeight + window.scrollY + 10 >= document.body.scrollHeight;
+
+      const disableLoadingScrollToBottom = (): void => {
+        loadingScrollToBottom = false;
+        if (isAtBottom()) pinBottom = true;
+      };
+
+      const checkAndScrollToBottom = (): void => {
+        if (loadingScrollToBottom || pinBottom) {
+          window.scrollTo(0, document.body.scrollHeight);
+        }
+      };
+
+      const subscriptions = [
+        fromEvent(timelineElement, 'wheel').subscribe(
+          disableLoadingScrollToBottom
+        ),
+        fromEvent(timelineElement, 'pointerdown').subscribe(
+          disableLoadingScrollToBottom
+        ),
+        fromEvent(timelineElement, 'keydown').subscribe(
+          disableLoadingScrollToBottom
+        ),
+        fromEvent(window, 'scroll').subscribe(() => {
+          if (loadingScrollToBottom) return;
+
+          if (isAtBottom()) {
+            pinBottom = true;
+          } else {
+            pinBottom = false;
+          }
+        }),
+        fromEvent(window, 'resize').subscribe(checkAndScrollToBottom),
+        getResizeEvent().subscribe(checkAndScrollToBottom),
+      ];
+
+      return () => {
+        subscriptions.forEach((s) => s.unsubscribe());
+      };
+    }
+  }, [getResizeEvent, triggerResizeEvent, timeline, props.posts]);
+
+  const [cardHeight, setCardHeight] = React.useState<number>(0);
+
+  const genCardCollapseLocalStorageKey = (uniqueId: string): string =>
+    `timeline.${uniqueId}.cardCollapse`;
+
+  const cardCollapseLocalStorageKey =
+    timeline != null ? genCardCollapseLocalStorageKey(timeline.uniqueId) : null;
+
+  const [infoCardCollapse, setInfoCardCollapse] = React.useState<boolean>(true);
+  React.useEffect(() => {
+    if (cardCollapseLocalStorageKey != null) {
+      const savedCollapse =
+        window.localStorage.getItem(cardCollapseLocalStorageKey) === 'true';
+      setInfoCardCollapse(savedCollapse);
+    }
+  }, [cardCollapseLocalStorageKey]);
+
+  let body: React.ReactElement;
+
+  if (props.error != null) {
+    body = <p className="text-danger">{t(props.error)}</p>;
+  } else {
+    if (timeline != null) {
+      let timelineBody: React.ReactElement;
+      if (props.posts != null) {
+        if (props.posts === 'forbid') {
+          timelineBody = (
+            <p className="text-danger">{t('timeline.messageCantSee')}</p>
+          );
+        } else {
+          timelineBody = (
+            <Timeline
+              containerRef={timelineRef}
+              posts={props.posts}
+              onDelete={props.onDelete}
+              onResize={triggerResizeEvent}
+            />
+          );
+          if (props.onPost != null) {
+            timelineBody = (
+              <>
+                {timelineBody}
+                <div ref={bottomSpaceRef} className="flex-fix-length" />
+                <TimelinePostEdit
+                  onPost={props.onPost}
+                  onHeightChange={onPostEditHeightChange}
+                  timelineUniqueId={timeline.uniqueId}
+                />
+              </>
+            );
+          }
+        }
+      } else {
+        timelineBody = (
+          <div className="full-viewport-center-child">
+            <Spinner color="primary" type="grow" />
+          </div>
+        );
+      }
+      const { CardComponent } = props;
+
+      body = (
+        <>
+          <div
+            className="fixed-top mt-appbar info-card-container"
+            data-collapse={infoCardCollapse ? 'true' : 'false'}
+          >
+            <Svg
+              src={
+                infoCardCollapse
+                  ? arrowsAngleExpandIcon
+                  : arrowsAngleContractIcon
+              }
+              onClick={() => {
+                const newState = !infoCardCollapse;
+                setInfoCardCollapse(newState);
+                window.localStorage.setItem(
+                  genCardCollapseLocalStorageKey(timeline.uniqueId),
+                  newState.toString()
+                );
+              }}
+              className="float-right m-1 info-card-collapse-button text-primary icon-button"
+            />
+            <CardComponent
+              timeline={timeline}
+              onManage={props.onManage}
+              onMember={props.onMember}
+              onHeight={setCardHeight}
+              className="info-card-content"
+            />
+          </div>
+          {timelineBody}
+        </>
+      );
+    } else {
+      body = (
+        <div className="full-viewport-center-child">
+          <Spinner color="primary" type="grow" />
+        </div>
+      );
+    }
+  }
+
+  return (
+    <>
+      <AppBar />
+      <div>
+        <div
+          style={{ height: 56 + cardHeight }}
+          className="timeline-page-top-space flex-fix-length"
+        />
+        {body}
+      </div>
+    </>
+  );
+}