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August 11, 2018 04:25
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Audio in React
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import React, { Component } from 'react'; | |
import PropTypes from 'prop-types'; | |
const {Provider: AudioContextProvider, Consumer: AudioConsumer} = React.createContext(); | |
class AudioProvider extends Component { | |
static propTypes = { | |
children: PropTypes.arrayOf(PropTypes.node).isRequired, | |
} | |
state = { | |
currentlyPlaying: null, | |
playingFailed: false, | |
} | |
play = (file) => { | |
return new Promise((resolve, reject) => | |
this.setState( | |
{ | |
currentlyPlaying: file, | |
onComplete: resolve, | |
}, | |
() => { | |
this.audioTag.load(); | |
let playPromise = this.audioTag.play(); | |
if (playPromise !== undefined) { | |
playPromise.catch((e) => { | |
if (e.name === 'NotAllowedError') { | |
// autoplay not allowed | |
this.setState({playingFailed: true}); | |
} else { | |
// some other error, give it to the caller of play(). | |
reject(e); | |
} | |
}); | |
} | |
} | |
) | |
); | |
} | |
playArray = async (files) => { | |
for (let i = 0; i < files.length; i++) { | |
await this.play(files[i]); | |
} | |
} | |
audioEnded = () => { | |
this.setState({currentlyPlaying: null, onComplete: null}, this.state.onComplete); | |
} | |
playButtonClick = () => { | |
this.audioTag.play(); | |
this.setState({playingFailed: false}); | |
} | |
render() { | |
let ctx = { | |
play: this.play, | |
playArray: this.playArray, | |
currentlyPlaying: this.state.currentlyPlaying, | |
}; | |
return ( | |
<AudioContextProvider | |
value={ ctx } | |
> | |
<audio | |
ref={ (audioTag) => this.audioTag = audioTag } | |
onEnded={ this.audioEnded } | |
> | |
<source src={ this.state.currentlyPlaying ? `/static/audio/${this.state.currentlyPlaying}` : null } /> | |
</audio> | |
{ this.state.playingFailed ? this.renderPlayButton() : null } | |
{ this.props.children } | |
</AudioContextProvider> | |
); | |
} | |
renderPlayButton() { | |
return ( | |
<div | |
id="playButtonOverlay" | |
onClick={ this.playButtonClick } | |
/> | |
); | |
} | |
} | |
export { AudioConsumer, AudioProvider }; |
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componentDidMount() { | |
this.props.audio.sequence(async () => { | |
await this.props.audio.playArray('1.mp3'); | |
await delay(1000); | |
this.setState({isGlowing: 0}); | |
await this.props.audio.play('2.mp3'); | |
this.setState({isGlowing: null}); | |
await delay(1000); | |
this.setState({isGlowing: 1}); | |
await this.props.audio.play('3.mp3'); | |
this.setState({isGlowing: null}); | |
await delay(500); | |
await this.props.audio.play('4.mp3'); | |
this.setState({ready: true}); | |
}, this.props.autoPlay); | |
} |
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import React, { Component } from 'react'; | |
import { AudioConsumer } from '../../audio'; | |
export default function withAudio(WrappedComponent) { | |
return class NewComponent extends Component { | |
state = { | |
inSequence: false, | |
beginSequence: null, | |
} | |
sequence = async (beginSequence, autoplay=true) => { | |
this.setState({ | |
beginSequence: beginSequence, | |
inSequence: true, | |
}); | |
if (autoplay) { | |
await beginSequence(); | |
} | |
this.setState({ | |
inSequence: false, | |
}); | |
} | |
replay = () => { | |
return this.sequence(this.state.beginSequence); | |
} | |
render() { | |
return ( | |
<AudioConsumer> | |
{ | |
audio => ( | |
<WrappedComponent | |
audio={ { | |
replay: this.replay, | |
sequence: this.sequence, | |
inSequence: this.state.inSequence, | |
...audio | |
} } | |
{ ...this.props } | |
/> | |
) | |
} | |
</AudioConsumer> | |
); | |
} | |
}; | |
} |
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