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62 lines
2.1 KiB
TypeScript
62 lines
2.1 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 { NotificationColor } from "./NotificationColor";
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import { NotificationState } from "./NotificationState";
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/**
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* Summarizes a number of states into a unique snapshot. To populate, call
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* the add() function with the notification states to be included.
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*
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* Useful for community notification counts, global notification counts, etc.
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*/
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export class SummarizedNotificationState extends NotificationState {
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private totalStatesWithUnread = 0;
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constructor() {
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super();
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this._symbol = null;
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this._count = 0;
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this._color = NotificationColor.None;
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}
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public get numUnreadStates(): number {
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return this.totalStatesWithUnread;
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}
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/**
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* Append a notification state to this snapshot, taking the loudest NotificationColor
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* of the two. By default this will not adopt the symbol of the other notification
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* state to prevent the count from being lost in typical usage.
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* @param other The other notification state to append.
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* @param includeSymbol If true, the notification state's symbol will be taken if one
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* is present.
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*/
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public add(other: NotificationState, includeSymbol = false) {
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if (other.symbol && includeSymbol) {
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this._symbol = other.symbol;
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}
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if (other.count) {
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this._count += other.count;
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}
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if (other.color > this.color) {
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this._color = other.color;
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}
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if (other.hasUnreadCount) {
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this.totalStatesWithUnread++;
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}
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}
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}
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