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c5812d6c27
This is more general maintenance than performance as the RoomList doesn't need to be generating layouts for the sublists, and it certainly doesn't need to be creating a bunch of extra ones. The sublists are perfectly capable of getting their own layout instance and using it, and we are perfectly able to limit the number of these things we create through the session's lifespan.
54 lines
1.8 KiB
TypeScript
54 lines
1.8 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 { TagID } from "./models";
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import { ListLayout } from "./ListLayout";
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export default class RoomListLayoutStore {
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private static internalInstance: RoomListLayoutStore;
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private readonly layoutMap = new Map<TagID, ListLayout>();
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public ensureLayoutExists(tagId: TagID) {
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if (!this.layoutMap.has(tagId)) {
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this.layoutMap.set(tagId, new ListLayout(tagId));
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}
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}
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public getLayoutFor(tagId: TagID): ListLayout {
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if (!this.layoutMap.has(tagId)) {
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this.layoutMap.set(tagId, new ListLayout(tagId));
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}
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return this.layoutMap.get(tagId);
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}
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// Note: this primarily exists for debugging, and isn't really intended to be used by anything.
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public async resetLayouts() {
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console.warn("Resetting layouts for room list");
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for (const layout of this.layoutMap.values()) {
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layout.reset();
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}
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}
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public static get instance(): RoomListLayoutStore {
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if (!RoomListLayoutStore.internalInstance) {
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RoomListLayoutStore.internalInstance = new RoomListLayoutStore();
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}
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return RoomListLayoutStore.internalInstance;
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}
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}
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window.mx_RoomListLayoutStore = RoomListLayoutStore.instance;
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