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/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 ++
 4 files changed, 172 insertions(+), 98 deletions(-)
 create mode 100644 FrontEnd/src/components/alert/AlertService.ts
 create mode 100644 FrontEnd/src/components/alert/index.ts

(limited to 'FrontEnd/src/components')

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);
+}
-- 
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