73 lines
2.2 KiB
JavaScript
73 lines
2.2 KiB
JavaScript
/*
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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 EventEmitter from 'events';
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/**
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* Holds the active toasts
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*/
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export default class ToastStore extends EventEmitter {
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static PRIORITY_REALTIME = 0;
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static PRIORITY_DEFAULT = 1;
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static PRIORITY_LOW = 2;
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static sharedInstance() {
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if (!global.mx_ToastStore) global.mx_ToastStore = new ToastStore();
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return global.mx_ToastStore;
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}
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constructor() {
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super();
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this._dispatcherRef = null;
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this._toasts = [];
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}
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reset() {
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this._toasts = [];
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}
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/**
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* Add or replace a toast
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* If a toast with the same toastKey already exists, the given toast will replace it
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* Toasts are always added underneath any toasts of the same priority, so existing
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* toasts stay at the top unless a higher priority one arrives (better to not change the
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* toast unless necessary).
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*
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* @param {boject} newToast The new toast
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*/
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addOrReplaceToast(newToast) {
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if (newToast.priority === undefined) newToast.priority = ToastStore.PRIORITY_DEFAULT;
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const oldIndex = this._toasts.findIndex(t => t.key === newToast.key);
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if (oldIndex === -1) {
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let newIndex = this._toasts.length;
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while (newIndex > 0 && this._toasts[newIndex - 1].priority > newToast.priority) --newIndex;
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this._toasts.splice(newIndex, 0, newToast);
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} else {
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this._toasts[oldIndex] = newToast;
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}
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this.emit('update');
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}
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dismissToast(key) {
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this._toasts = this._toasts.filter(t => t.key !== key);
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this.emit('update');
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}
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getToasts() {
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return this._toasts;
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}
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}
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