150 lines
4.0 KiB
JavaScript
150 lines
4.0 KiB
JavaScript
// Copyright 2016-2020 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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/* global $, Whisper, moment, WebAudioRecorder */
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/* eslint-disable more/no-then */
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// eslint-disable-next-line func-names
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(function () {
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window.Whisper = window.Whisper || {};
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Whisper.RecorderView = Whisper.View.extend({
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className: 'recorder clearfix',
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templateName: 'recorder',
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initialize() {
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this.startTime = Date.now();
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this.interval = setInterval(this.updateTime.bind(this), 1000);
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this.onSwitchAwayBound = this.onSwitchAway.bind(this);
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$(window).on('blur', this.onSwitchAwayBound);
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this.handleKeyDownBound = this.handleKeyDown.bind(this);
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this.$el.on('keydown', this.handleKeyDownBound);
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this.start();
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},
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events: {
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'click .close': 'close',
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'click .finish': 'finish',
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close: 'close',
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},
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onSwitchAway() {
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this.lostFocus = true;
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this.recorder.finishRecording();
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this.close();
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},
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handleKeyDown(event) {
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if (event.key === 'Escape') {
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this.close();
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event.preventDefault();
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event.stopPropagation();
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}
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},
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updateTime() {
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const duration = moment.duration(Date.now() - this.startTime, 'ms');
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const minutes = `${Math.trunc(duration.asMinutes())}`;
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let seconds = `${duration.seconds()}`;
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if (seconds.length < 2) {
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seconds = `0${seconds}`;
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}
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this.$('.time').text(`${minutes}:${seconds}`);
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},
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close() {
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// Note: the 'close' event can be triggered by InboxView, when the user clicks
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// anywhere outside the recording pane.
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if (this.recorder.isRecording()) {
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this.recorder.cancelRecording();
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}
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this.recorder = null;
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if (this.interval) {
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clearInterval(this.interval);
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}
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this.interval = null;
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if (this.source) {
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this.source.disconnect();
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}
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this.source = null;
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if (this.context) {
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this.context.close().then(() => {
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window.log.info('audio context closed');
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});
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}
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this.context = null;
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this.remove();
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this.trigger('closed');
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$(window).off('blur', this.onSwitchAwayBound);
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this.$el.off('keydown', this.handleKeyDownBound);
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},
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finish() {
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this.clickedFinish = true;
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this.recorder.finishRecording();
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this.close();
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},
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handleBlob(recorder, blob) {
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if (blob && this.clickedFinish) {
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this.trigger('send', blob);
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} else if (blob) {
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this.trigger('confirm', blob, this.lostFocus);
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} else {
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this.close();
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}
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},
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start() {
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this.lostFocus = false;
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this.clickedFinish = false;
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this.context = new AudioContext();
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this.input = this.context.createGain();
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this.recorder = new WebAudioRecorder(this.input, {
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encoding: 'mp3',
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workerDir: 'js/', // must end with slash
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});
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this.recorder.onComplete = this.handleBlob.bind(this);
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this.recorder.onError = this.onError.bind(this);
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this.recorder.onTimeout = this.onTimeout.bind(this);
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navigator.webkitGetUserMedia(
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{ audio: true },
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stream => {
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this.source = this.context.createMediaStreamSource(stream);
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this.source.connect(this.input);
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},
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this.onError.bind(this)
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);
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this.recorder.startRecording();
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},
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onTimeout() {
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this.recorder.finishRecording();
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this.close();
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},
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onError(error) {
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// Protect against out-of-band errors, which can happen if the user revokes media
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// permissions after successfully accessing the microphone.
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if (!this.recorder) {
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return;
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}
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this.close();
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if (error && error.name === 'NotAllowedError') {
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window.log.warn(
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'RecorderView.onError: Microphone access is not allowed!'
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);
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window.showPermissionsPopup();
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} else {
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window.log.error(
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'RecorderView.onError:',
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error && error.stack ? error.stack : error
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);
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}
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},
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});
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})();
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