mastodon/app/assets/javascripts/components/features/ui/components/column.jsx
2016-10-12 19:14:47 +02:00

77 lines
1.6 KiB
JavaScript

import ColumnHeader from './column_header';
import PureRenderMixin from 'react-addons-pure-render-mixin';
const easingOutQuint = (x, t, b, c, d) => c*((t=t/d-1)*t*t*t*t + 1) + b;
const scrollTop = (node) => {
const startTime = Date.now();
const offset = node.scrollTop;
const targetY = -offset;
const duration = 1000;
let interrupt = false;
const step = () => {
const elapsed = Date.now() - startTime;
const percentage = elapsed / duration;
if (percentage > 1 || interrupt) {
return;
}
node.scrollTop = easingOutQuint(0, elapsed, offset, targetY, duration);
requestAnimationFrame(step);
};
step();
return () => {
interrupt = true;
};
};
const style = {
boxSizing: 'border-box',
background: '#282c37',
display: 'flex',
flexDirection: 'column'
};
const Column = React.createClass({
propTypes: {
heading: React.PropTypes.string,
icon: React.PropTypes.string
},
mixins: [PureRenderMixin],
handleHeaderClick () {
let node = ReactDOM.findDOMNode(this);
this._interruptScrollAnimation = scrollTop(node.querySelector('.scrollable'));
},
handleWheel () {
if (typeof this._interruptScrollAnimation !== 'undefined') {
this._interruptScrollAnimation();
}
},
render () {
let header = '';
if (this.props.heading) {
header = <ColumnHeader icon={this.props.icon} type={this.props.heading} onClick={this.handleHeaderClick} />;
}
return (
<div className='column' style={style} onWheel={this.handleWheel}>
{header}
{this.props.children}
</div>
);
}
});
export default Column;