52 lines
		
	
	
	
		
			1.1 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			52 lines
		
	
	
	
		
			1.1 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| import React from 'react';
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| import PropTypes from 'prop-types';
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| import detectPassiveEvents from 'detect-passive-events';
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| import { scrollTop } from '../scroll';
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| 
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| export default class Column extends React.PureComponent {
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| 
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|   static propTypes = {
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|     children: PropTypes.node,
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|   };
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| 
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|   scrollTop () {
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|     const scrollable = this.node.querySelector('.scrollable');
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| 
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|     if (!scrollable) {
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|       return;
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|     }
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| 
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|     this._interruptScrollAnimation = scrollTop(scrollable);
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|   }
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| 
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|   handleWheel = () => {
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|     if (typeof this._interruptScrollAnimation !== 'function') {
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|       return;
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|     }
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| 
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|     this._interruptScrollAnimation();
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|   }
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| 
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|   setRef = c => {
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|     this.node = c;
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|   }
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| 
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|   componentDidMount () {
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|     this.node.addEventListener('wheel', this.handleWheel,  detectPassiveEvents.hasSupport ? { passive: true } : false);
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|   }
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| 
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|   componentWillUnmount () {
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|     this.node.removeEventListener('wheel', this.handleWheel);
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|   }
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| 
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|   render () {
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|     const { children } = this.props;
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| 
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|     return (
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|       <div role='region' className='column' ref={this.setRef}>
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|         {children}
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|       </div>
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|     );
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|   }
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| 
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| }
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