124 lines
3.7 KiB
TypeScript
124 lines
3.7 KiB
TypeScript
/*
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Copyright 2020 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import { TypedEventEmitter } from "matrix-js-sdk/src/models/typed-event-emitter";
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import { NotificationColor } from "./NotificationColor";
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import { IDestroyable } from "../../utils/IDestroyable";
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import SettingsStore from "../../settings/SettingsStore";
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export interface INotificationStateSnapshotParams {
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symbol: string | null;
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count: number;
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color: NotificationColor;
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}
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export enum NotificationStateEvents {
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Update = "update",
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}
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type EventHandlerMap = {
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[NotificationStateEvents.Update]: () => void;
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};
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export abstract class NotificationState
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extends TypedEventEmitter<NotificationStateEvents, EventHandlerMap>
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implements INotificationStateSnapshotParams, IDestroyable {
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//
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protected _symbol: string | null = null;
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protected _count = 0;
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protected _color: NotificationColor = NotificationColor.None;
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private watcherReferences: string[] = [];
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constructor() {
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super();
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this.watcherReferences.push(
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SettingsStore.watchSetting("feature_hidebold", null, () => {
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this.emit(NotificationStateEvents.Update);
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}),
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);
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}
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public get symbol(): string | null {
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return this._symbol;
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}
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public get count(): number {
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return this._count;
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}
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public get color(): NotificationColor {
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return this._color;
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}
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public get isIdle(): boolean {
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return this.color <= NotificationColor.None;
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}
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public get isUnread(): boolean {
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if (this.color > NotificationColor.Bold) {
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return true;
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} else {
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const hideBold = SettingsStore.getValue("feature_hidebold");
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return this.color === NotificationColor.Bold && !hideBold;
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}
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}
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public get hasUnreadCount(): boolean {
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return this.color >= NotificationColor.Grey && (!!this.count || !!this.symbol);
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}
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public get hasMentions(): boolean {
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return this.color >= NotificationColor.Red;
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}
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protected emitIfUpdated(snapshot: NotificationStateSnapshot) {
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if (snapshot.isDifferentFrom(this)) {
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this.emit(NotificationStateEvents.Update);
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}
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}
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protected snapshot(): NotificationStateSnapshot {
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return new NotificationStateSnapshot(this);
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}
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public destroy(): void {
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this.removeAllListeners(NotificationStateEvents.Update);
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for (const watcherReference of this.watcherReferences) {
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SettingsStore.unwatchSetting(watcherReference);
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}
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this.watcherReferences = [];
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}
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}
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export class NotificationStateSnapshot {
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private readonly symbol: string | null;
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private readonly count: number;
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private readonly color: NotificationColor;
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constructor(state: INotificationStateSnapshotParams) {
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this.symbol = state.symbol;
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this.count = state.count;
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this.color = state.color;
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}
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public isDifferentFrom(other: INotificationStateSnapshotParams): boolean {
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const before = { count: this.count, symbol: this.symbol, color: this.color };
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const after = { count: other.count, symbol: other.symbol, color: other.color };
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return JSON.stringify(before) !== JSON.stringify(after);
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}
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}
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