Line 1 / 2 Support

Support one active call plus one call on hold

src/components/views/voip/CallViewForRoom.tsx

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+/*
+Copyright 2020 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 { CallState, MatrixCall } from 'matrix-js-sdk/src/webrtc/call';
+import React from 'react';
+import CallHandler from '../../../CallHandler';
+import CallView from './CallView';
+import dis from '../../../dispatcher/dispatcher';
+
+interface IProps {
+    // What room we should display the call for
+    roomId: string,
+
+    // maxHeight style attribute for the video panel
+    maxVideoHeight?: number;
+
+    // a callback which is called when the content in the callview changes
+    // in a way that is likely to cause a resize.
+    onResize?: any;
+}
+
+interface IState {
+    call: MatrixCall,
+}
+
+/*
+ * Wrapper for CallView that always display the call in a given room,
+ * or nothing if there is no call in that room.
+ */
+export default class CallViewForRoom extends React.Component<IProps, IState> {
+    private dispatcherRef: string;
+
+    constructor(props: IProps) {
+        super(props);
+        this.state = {
+            call: this.getCall(),
+        };
+    }
+
+    public componentDidMount() {
+        this.dispatcherRef = dis.register(this.onAction);
+    }
+
+    public componentWillUnmount() {
+        dis.unregister(this.dispatcherRef);
+    }
+
+    private onAction = (payload) => {
+        switch (payload.action) {
+            case 'call_state': {
+                const newCall = this.getCall();
+                if (newCall !== this.state.call) {
+                    this.setState({call: newCall});
+                }
+                break;
+            }
+        }
+    };
+
+    private getCall(): MatrixCall {
+        const call = CallHandler.sharedInstance().getCallForRoom(this.props.roomId);
+
+        if (call && [CallState.Ended, CallState.Ringing].includes(call.state)) return null;
+        return call;
+    }
+
+    public render() {
+        if (!this.state.call) return null;
+
+        return <CallView call={this.state.call} pipMode={false}
+            onResize={this.props.onResize} maxVideoHeight={this.props.maxVideoHeight}
+        />;
+    }
+}