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Touch Event Handling React Component
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import React from 'react'; | |
export default class EventComponent extends React.Component { | |
constructor(props) { | |
super(props); | |
this._onTouchStart = this._onTouchStart.bind(this); | |
this._onTouchMove = this._onTouchMove.bind(this); | |
this._onTouchEnd = this._onTouchEnd.bind(this); | |
this.state = { swiped: false }; | |
this._swipe = {}; | |
this.minDistance = 50; | |
} | |
_onTouchStart(e) { | |
const touch = e.touches[0]; | |
this._swipe = { x: touch.clientX }; | |
this.setState({ swiped: false }); | |
} | |
_onTouchMove(e) { | |
if (e.changedTouches && e.changedTouches.length) { | |
const touch = e.changedTouches[0]; | |
this._swipe.swiping = true; | |
} | |
} | |
_onTouchEnd(e) { | |
const touch = e.changedTouches[0]; | |
const absX = Math.abs(touch.clientX - this._swipe.x); | |
if (this._swipe.swiping && absX > this.minDistance ) { | |
this.props.onSwiped && this.props.onSwiped(); | |
this.setState({ swiped: true }); | |
} | |
this._swipe = {}; | |
} | |
render() { | |
return ( | |
<div | |
onTouchStart={this._onTouchStart} | |
onTouchMove={this._onTouchMove} | |
onTouchEnd={this._onTouchEnd}> | |
{`Component-${this.state.swiped ? 'swiped' : ''}`} | |
</div> | |
); | |
} | |
} |
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