Wire up a simple record button

src/components/views/rooms/VoiceRecordComposerTile.tsx

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+/*
+Copyright 2021 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 AccessibleTooltipButton from "../elements/AccessibleTooltipButton";
+import {_t} from "../../../languageHandler";
+import React from "react";
+import {VoiceRecorder} from "../../../voice/VoiceRecorder";
+import {Room} from "matrix-js-sdk/src/models/room";
+import {MatrixClientPeg} from "../../../MatrixClientPeg";
+
+interface IProps {
+    room: Room;
+    onRecording: (haveRecording: boolean) => void;
+}
+
+interface IState {
+    recorder?: VoiceRecorder;
+}
+
+export default class VoiceRecordComposerTile extends React.PureComponent<IProps, IState> {
+    public constructor(props) {
+        super(props);
+
+        this.state = {
+            recorder: null, // not recording by default
+        };
+    }
+
+    private onStartVoiceMessage = async () => {
+        if (this.state.recorder) {
+            await this.state.recorder.stop();
+            const mxc = await this.state.recorder.upload();
+            MatrixClientPeg.get().sendMessage(this.props.room.roomId, {
+                body: "Voice message",
+                msgtype: "m.audio", // TODO
+                url: mxc,
+            });
+            this.setState({recorder: null});
+            this.props.onRecording(false);
+            return;
+        }
+        const recorder = new VoiceRecorder(MatrixClientPeg.get());
+        await recorder.start();
+        this.props.onRecording(true);
+        // TODO: Run through EQ component
+        recorder.rawData.onUpdate((frame) => {
+            console.log('@@ FRAME', frame);
+        });
+        this.setState({recorder});
+    };
+
+    public render() {
+        return (
+            <AccessibleTooltipButton
+                className="mx_MessageComposer_button mx_MessageComposer_voiceMessage"
+                onClick={this.onStartVoiceMessage}
+                title={_t('Record a voice message')}
+            />
+        );
+    }
+}