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React drag and drop full screen
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| import React, { Component } from 'react' | |
| import DragAndDrop from './DragAndDrop' | |
| class App extends Component { | |
| handleDrop(files) { | |
| console.log(files) | |
| } | |
| render() { | |
| return ( | |
| <DragAndDrop | |
| handleDrop={files => this.handleDrop(files)}> | |
| </DragAndDrop> | |
| ) | |
| } | |
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import React, { Component } from 'react' | |
| class DragAndDrop extends Component { | |
| constructor(props) { | |
| super(props) | |
| this.state = { | |
| drag: false | |
| } | |
| this.dragCounter = 0 | |
| } | |
| handleDrag(event) { | |
| event.preventDefault() | |
| event.stopPropagation() | |
| } | |
| handleDragIn(event) { | |
| event.preventDefault() | |
| event.stopPropagation() | |
| this.dragCounter++ | |
| if (event.dataTransfer.items && | |
| event.dataTransfer.items.length > 0) { | |
| this.setState({drag: true}) | |
| } | |
| } | |
| handleDragOut(event) { | |
| event.preventDefault() | |
| event.stopPropagation() | |
| this.dragCounter-- | |
| if (this.dragCounter === 0) { | |
| this.setState({drag: false}) | |
| } | |
| } | |
| handleDrop(event) { | |
| event.preventDefault() | |
| event.stopPropagation() | |
| this.setState({drag: false}) | |
| if (event.dataTransfer.files && | |
| event.dataTransfer.files.length > 0) { | |
| this.props.handleDrop(event.dataTransfer.files) | |
| event.dataTransfer.clearData() | |
| this.dragCounter = 0 | |
| } | |
| } | |
| componentDidMount() { | |
| let el = document.body | |
| el.addEventListener('dragenter', event => this.handleDragIn(event)) | |
| el.addEventListener('dragleave', event => this.handleDragOut(event)) | |
| el.addEventListener('dragover', event => this.handleDrag(event)) | |
| el.addEventListener('drop', event => this.handleDrop(event)) | |
| } | |
| componentWillUnmount() { | |
| let el = document.body | |
| el.removeEventListener('dragenter', event => this.handleDragIn(event)) | |
| el.removeEventListener('dragleave', event => this.handleDragOut(event)) | |
| el.removeEventListener('dragover', event => this.handleDrag(event)) | |
| el.removeEventListener('drop', event => this.handleDrop(event)) | |
| } | |
| render() { | |
| return ( | |
| <div | |
| style={{ | |
| position: 'fixed', | |
| top: 0, | |
| left: 0, | |
| width: '100%', | |
| height: '100%', | |
| display: 'flex', | |
| pointerEvents: 'none', | |
| justifyContent: 'center', | |
| alignItems: 'center', | |
| border: '5px solid red', | |
| }} | |
| > | |
| {this.state.drag && | |
| <div | |
| style={{ | |
| position: 'fixed', | |
| top: 0, | |
| left: 0, | |
| width: '100%', | |
| height: '100%', | |
| display: 'flex', | |
| justifyContent: 'center', | |
| alignItems: 'center', | |
| fontSize: '5em', | |
| color: '#000', | |
| border: '5px solid green', | |
| }} | |
| > | |
| Drop here | |
| </div> | |
| } | |
| {this.props.children} | |
| </div> | |
| ) | |
| } | |
| } | |
| export default DragAndDrop |
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