Merge branch 'bwindels/calls' into calls-show-toast

src/matrix/calls/group/GroupCall.ts

@@ -141,7 +141,7 @@ export class GroupCall extends EventEmitter<{change: never}> {
     get members(): BaseObservableMap<string, Member> { return this._members; }
 
     get isTerminated(): boolean {
-        return this.callContent?.["m.terminated"] === true;
+        return !!this.callContent?.["m.terminated"];
     }
 
     get isRinging(): boolean {
@@ -287,7 +287,7 @@ export class GroupCall extends EventEmitter<{change: never}> {
                     const request = this.options.hsApi.sendState(this.roomId, EventType.GroupCallMember, this.options.ownUserId, memberContent, {log});
                     await request.response();
                     // our own user isn't included in members, so not in the count
-                    if (this.intent === CallIntent.Ring && this._members.size === 0) {
+                    if ((this.intent === CallIntent.Ring || this.intent === CallIntent.Prompt) && this._members.size === 0) {
                         await this.terminate(log);
                     }
                 } else {

src/observable/map/BaseObservableMap.ts

@@ -18,6 +18,7 @@ import {BaseObservable} from "../BaseObservable";
 import {JoinedMap} from "./index";
 import {MappedMap} from "./index";
 import {FilteredMap} from "./index";
+import {BaseObservableValue, MapSizeObservableValue} from "../value/index";
 import {SortedMapList} from "../list/SortedMapList.js";
 
 
@@ -80,6 +81,10 @@ export abstract class BaseObservableMap<K, V> extends BaseObservable<IMapObserve
         return new FilteredMap(this, filter);
     }
 
+    observeSize(): BaseObservableValue<number> {
+        return new MapSizeObservableValue(this);
+    }
+
     abstract [Symbol.iterator](): Iterator<[K, V]>;
     abstract get size(): number;
     abstract get(key: K): V | undefined;

src/observable/value/MapSizeObservableValue.ts

@@ -0,0 +1,71 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import {BaseObservableValue} from "./index";
+import {BaseObservableMap} from "../map/index";
+import type {SubscriptionHandle} from "../BaseObservable";
+
+export class MapSizeObservableValue<K, V> extends BaseObservableValue<number> {
+    private subscription?: SubscriptionHandle;
+
+    constructor(private readonly map: BaseObservableMap<K, V>)
+    {
+        super();
+    }
+
+    onSubscribeFirst(): void {
+        this.subscription = this.map.subscribe({
+            onAdd: (key: K, value: V) => {
+                this.emit(this.get());
+            },
+            onRemove: (key: K, value: V) => {
+                this.emit(this.get());
+            },
+            onUpdate: (key: K, value: V) => {},
+            onReset: () => {
+                this.emit(this.get());
+            },
+        });
+    }
+
+    onUnsubscribeLast(): void {
+        this.subscription = this.subscription?.();
+    }
+
+    get(): number {
+        return this.map.size;
+    }
+}
+
+import {ObservableMap} from "../map/index";
+
+export function tests() {
+    return {
+        "emits update on add and remove": assert => {
+            const map = new ObservableMap<string, number>();
+            const size = new MapSizeObservableValue(map);
+            const updates: number[] = [];
+            size.subscribe(size => {
+                updates.push(size);
+            });
+            map.add("hello", 1);
+            map.add("world", 2);
+            map.remove("world");
+            map.remove("hello");
+            assert.deepEqual(updates, [1, 2, 1, 0]);
+        }
+    };
+}

src/observable/value/index.ts

@@ -12,4 +12,5 @@ export {EventObservableValue} from './EventObservableValue';
 export {FlatMapObservableValue} from './FlatMapObservableValue';
 export {PickMapObservableValue} from './PickMapObservableValue';
 export {RetainedObservableValue} from './RetainedObservableValue';
+export {MapSizeObservableValue} from './MapSizeObservableValue';
 export {ObservableValue} from './ObservableValue';

src/platform/web/ui/css/themes/element/call.css

@@ -25,11 +25,13 @@ limitations under the License.
 }
 
 .CallView_error {
-    color: red;
-    font-weight: bold;
     align-self: start;
     justify-self: center;
     margin: 16px;
+    /** Chrome (v100) requires this to make the buttons clickable
+     * where they overlap with the video element, even though
+     * the buttons come later in the DOM. */
+    z-index: 1;
 }
 
 .CallView_members {