90 lines
2.3 KiB
JavaScript
90 lines
2.3 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 {ViewModel} from "../ViewModel.js";
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export class RoomGridViewModel extends ViewModel {
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constructor(options) {
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super(options);
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this._width = options.width;
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this._height = options.height;
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this._selectedIndex = 0;
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this._viewModels = [];
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}
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roomViewModelAt(i) {
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return this._viewModels[i];
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}
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get focusIndex() {
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return this._selectedIndex;
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}
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setFocusIndex(idx) {
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if (idx === this._selectedIndex) {
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return;
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}
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this._selectedIndex = idx;
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const vm = this._viewModels[this._selectedIndex];
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vm?.focus();
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this.emitChange("focusedIndex");
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}
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get width() {
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return this._width;
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}
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get height() {
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return this._height;
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}
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/**
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* Sets a pair of room and room tile view models at the current index
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* @param {RoomViewModel} vm
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* @package
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*/
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setRoomViewModel(vm) {
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const old = this._viewModels[this._selectedIndex];
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this.disposeTracked(old);
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this._viewModels[this._selectedIndex] = this.track(vm);
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this.emitChange(`${this._selectedIndex}`);
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}
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/**
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* @package
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*/
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tryFocusRoom(roomId) {
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const index = this._viewModels.findIndex(vm => vm.id === roomId);
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if (index >= 0) {
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this.setFocusIndex(index);
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return true;
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}
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return false;
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}
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/**
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* Returns the first set of room vm,
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* and untracking it so it is not owned by this view model anymore.
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* @package
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*/
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getAndUntrackFirst() {
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for (const vm of this._viewModels) {
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if (vm) {
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this.untrack(vm);
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return vm;
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}
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}
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}
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}
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