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https://github.com/vector-im/hydrogen-web.git
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344 lines
12 KiB
JavaScript
344 lines
12 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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function dedupeSparse(roomIds) {
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return roomIds.map((id, idx) => {
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if (roomIds.slice(0, idx).includes(id)) {
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return undefined;
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} else {
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return id;
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}
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});
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}
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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._createRoomViewModel = options.createRoomViewModel;
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this._selectedIndex = 0;
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this._viewModels = [];
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this._setupNavigation();
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}
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_setupNavigation() {
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const focusTileIndex = this.navigation.observe("empty-grid-tile");
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this.track(focusTileIndex.subscribe(index => {
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if (typeof index === "number") {
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this._setFocusIndex(index);
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}
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}));
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if (typeof focusTileIndex.get() === "number") {
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this._selectedIndex = focusTileIndex.get();
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}
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const focusedRoom = this.navigation.observe("room");
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this.track(focusedRoom.subscribe(roomId => {
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if (roomId) {
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// as the room will be in the "rooms" observable
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// (monitored by the parent vm) as well,
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// we only change the focus here and trust
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// setRoomIds to have created the vm already
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this._setFocusRoom(roomId);
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}
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}));
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// initial focus for a room is set by initializeRoomIdsAndTransferVM
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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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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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focusTile(index) {
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if (index === this._selectedIndex) {
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return;
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}
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let path = this.navigation.path;
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const vm = this._viewModels[index];
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if (vm) {
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path = path.with(this.navigation.segment("room", vm.id));
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} else {
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path = path.with(this.navigation.segment("empty-grid-tile", index));
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}
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let url = this.urlRouter.urlForPath(path);
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url = this.urlRouter.applyUrl(url);
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this.urlRouter.history.pushUrl(url);
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}
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/** called from SessionViewModel */
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initializeRoomIdsAndTransferVM(roomIds, existingRoomVM) {
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roomIds = dedupeSparse(roomIds);
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let transfered = false;
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if (existingRoomVM) {
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const index = roomIds.indexOf(existingRoomVM.id);
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if (index !== -1) {
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this._viewModels[index] = this.track(existingRoomVM);
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transfered = true;
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}
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}
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this.setRoomIds(roomIds);
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// now all view models exist, set the focus to the selected room
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const focusedRoom = this.navigation.path.get("room");
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if (focusedRoom) {
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const index = this._viewModels.findIndex(vm => vm && vm.id === focusedRoom.value);
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if (index !== -1) {
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this._selectedIndex = index;
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}
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}
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return transfered;
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}
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/** called from SessionViewModel */
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setRoomIds(roomIds) {
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roomIds = dedupeSparse(roomIds);
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let changed = false;
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const len = this._height * this._width;
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for (let i = 0; i < len; i += 1) {
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const newId = roomIds[i];
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const vm = this._viewModels[i];
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// did anything change?
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if ((!vm && newId) || (vm && vm.id !== newId)) {
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if (vm) {
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this._viewModels[i] = this.disposeTracked(vm);
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}
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if (newId) {
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const newVM = this._createRoomViewModel(newId);
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if (newVM) {
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this._viewModels[i] = this.track(newVM);
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}
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}
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changed = true;
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}
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}
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if (changed) {
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this.emitChange();
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}
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return changed;
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}
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/** called from SessionViewModel */
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releaseRoomViewModel(roomId) {
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const index = this._viewModels.findIndex(vm => vm && vm.id === roomId);
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if (index !== -1) {
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const vm = this._viewModels[index];
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this.untrack(vm);
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this._viewModels[index] = null;
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return vm;
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}
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}
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_setFocusIndex(idx) {
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if (idx === this._selectedIndex || idx >= (this._width * this._height)) {
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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("focusIndex");
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}
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_setFocusRoom(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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}
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}
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}
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import {createNavigation} from "../navigation/index.js";
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export function tests() {
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class RoomVMMock {
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constructor(id) {
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this.id = id;
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this.disposed = false;
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this.focused = false;
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}
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dispose() {
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this.disposed = true;
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}
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focus() {
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this.focused = true;
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}
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}
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function createNavigationForRoom(rooms, room) {
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const navigation = createNavigation();
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navigation.applyPath(navigation.pathFrom([
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navigation.segment("session", "1"),
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navigation.segment("rooms", rooms),
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navigation.segment("room", room),
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]));
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return navigation;
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}
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function createNavigationForEmptyTile(rooms, idx) {
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const navigation = createNavigation();
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navigation.applyPath(navigation.pathFrom([
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navigation.segment("session", "1"),
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navigation.segment("rooms", rooms),
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navigation.segment("empty-grid-tile", idx),
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]));
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return navigation;
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}
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return {
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"initialize with duplicate set of rooms": assert => {
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const navigation = createNavigationForRoom(["c", "a", "b", undefined, "a"], "a");
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const gridVM = new RoomGridViewModel({
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createRoomViewModel: id => new RoomVMMock(id),
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navigation,
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width: 3,
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height: 2,
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});
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gridVM.initializeRoomIdsAndTransferVM(navigation.path.get("rooms").value);
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assert.equal(gridVM.focusIndex, 1);
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assert.equal(gridVM.roomViewModelAt(0).id, "c");
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assert.equal(gridVM.roomViewModelAt(1).id, "a");
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assert.equal(gridVM.roomViewModelAt(2).id, "b");
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assert.equal(gridVM.roomViewModelAt(3), undefined);
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assert.equal(gridVM.roomViewModelAt(4), undefined);
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assert.equal(gridVM.roomViewModelAt(5), undefined);
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},
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"transfer room view model": assert => {
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const navigation = createNavigationForRoom(["a"], "a");
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const gridVM = new RoomGridViewModel({
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createRoomViewModel: () => assert.fail("no vms should be created"),
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navigation,
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width: 3,
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height: 2,
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});
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const existingRoomVM = new RoomVMMock("a");
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const transfered = gridVM.initializeRoomIdsAndTransferVM(navigation.path.get("rooms").value, existingRoomVM);
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assert.equal(transfered, true);
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assert.equal(gridVM.focusIndex, 0);
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assert.equal(gridVM.roomViewModelAt(0).id, "a");
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},
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"reject transfer for non-matching room view model": assert => {
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const navigation = createNavigationForRoom(["a"], "a");
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const gridVM = new RoomGridViewModel({
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createRoomViewModel: id => new RoomVMMock(id),
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navigation,
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width: 3,
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height: 2,
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});
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const existingRoomVM = new RoomVMMock("f");
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const transfered = gridVM.initializeRoomIdsAndTransferVM(navigation.path.get("rooms").value, existingRoomVM);
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assert.equal(transfered, false);
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assert.equal(gridVM.focusIndex, 0);
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assert.equal(gridVM.roomViewModelAt(0).id, "a");
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},
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"created & released room view model is not disposed": assert => {
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const navigation = createNavigationForRoom(["a"], "a");
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const gridVM = new RoomGridViewModel({
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createRoomViewModel: id => new RoomVMMock(id),
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navigation,
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width: 3,
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height: 2,
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});
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const transfered = gridVM.initializeRoomIdsAndTransferVM(navigation.path.get("rooms").value);
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assert.equal(transfered, false);
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const releasedVM = gridVM.releaseRoomViewModel("a");
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gridVM.dispose();
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assert.equal(releasedVM.disposed, false);
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},
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"transfered & released room view model is not disposed": assert => {
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const navigation = createNavigationForRoom([undefined, "a"], "a");
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const gridVM = new RoomGridViewModel({
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createRoomViewModel: () => assert.fail("no vms should be created"),
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navigation,
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width: 3,
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height: 2,
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});
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const existingRoomVM = new RoomVMMock("a");
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const transfered = gridVM.initializeRoomIdsAndTransferVM(navigation.path.get("rooms").value, existingRoomVM);
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assert.equal(transfered, true);
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const releasedVM = gridVM.releaseRoomViewModel("a");
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gridVM.dispose();
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assert.equal(releasedVM.disposed, false);
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},
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"try release non-existing room view model is": assert => {
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const navigation = createNavigationForEmptyTile([undefined, "b"], 3);
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const gridVM = new RoomGridViewModel({
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createRoomViewModel: id => new RoomVMMock(id),
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navigation,
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width: 3,
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height: 2,
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});
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gridVM.initializeRoomIdsAndTransferVM(navigation.path.get("rooms").value);
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const releasedVM = gridVM.releaseRoomViewModel("c");
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assert(!releasedVM);
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},
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"initial focus is set to empty tile": assert => {
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const navigation = createNavigationForEmptyTile(["a"], 1);
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const gridVM = new RoomGridViewModel({
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createRoomViewModel: id => new RoomVMMock(id),
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navigation,
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width: 3,
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height: 2,
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});
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gridVM.initializeRoomIdsAndTransferVM(navigation.path.get("rooms").value);
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assert.equal(gridVM.focusIndex, 1);
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assert.equal(gridVM.roomViewModelAt(0).id, "a");
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},
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"change room ids after creation": assert => {
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const navigation = createNavigationForRoom(["a", "b"], "a");
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const gridVM = new RoomGridViewModel({
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createRoomViewModel: id => new RoomVMMock(id),
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navigation,
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width: 3,
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height: 2,
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});
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navigation.observe("rooms").subscribe(roomIds => {
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gridVM.setRoomIds(roomIds);
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});
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gridVM.initializeRoomIdsAndTransferVM(navigation.path.get("rooms").value);
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const oldA = gridVM.roomViewModelAt(0);
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const oldB = gridVM.roomViewModelAt(1);
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assert.equal(oldA.id, "a");
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assert.equal(oldB.id, "b");
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navigation.applyPath(navigation.path
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.with(navigation.segment("rooms", ["b", "c", "b"]))
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.with(navigation.segment("room", "c"))
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);
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assert.equal(oldA.disposed, true);
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assert.equal(oldB.disposed, true);
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assert.equal(gridVM.focusIndex, 1);
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assert.equal(gridVM.roomViewModelAt(0).id, "b");
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assert.equal(gridVM.roomViewModelAt(0).disposed, false);
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assert.equal(gridVM.roomViewModelAt(1).id, "c");
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assert.equal(gridVM.roomViewModelAt(1).focused, true);
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assert.equal(gridVM.roomViewModelAt(2), undefined);
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}
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};
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}
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