diff options
Diffstat (limited to 'app/javascript/mastodon/features/ui/components/column.js')
-rw-r--r-- | app/javascript/mastodon/features/ui/components/column.js | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/app/javascript/mastodon/features/ui/components/column.js b/app/javascript/mastodon/features/ui/components/column.js new file mode 100644 index 000000000..fcb197573 --- /dev/null +++ b/app/javascript/mastodon/features/ui/components/column.js @@ -0,0 +1,93 @@ +import React from 'react'; +import ColumnHeader from './column_header'; +import PropTypes from 'prop-types'; + +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; + }; +}; + +class Column extends React.PureComponent { + + constructor (props, context) { + super(props, context); + this.handleHeaderClick = this.handleHeaderClick.bind(this); + this.handleWheel = this.handleWheel.bind(this); + this.setRef = this.setRef.bind(this); + } + + handleHeaderClick () { + const scrollable = this.node.querySelector('.scrollable'); + if (!scrollable) { + return; + } + this._interruptScrollAnimation = scrollTop(scrollable); + } + + handleWheel () { + if (typeof this._interruptScrollAnimation !== 'undefined') { + this._interruptScrollAnimation(); + } + } + + setRef (c) { + this.node = c; + } + + render () { + const { heading, icon, children, active, hideHeadingOnMobile } = this.props; + + let columnHeaderId = null + let header = ''; + + if (heading) { + columnHeaderId = heading.replace(/ /g, '-') + header = <ColumnHeader icon={icon} active={active} type={heading} onClick={this.handleHeaderClick} hideOnMobile={hideHeadingOnMobile} columnHeaderId={columnHeaderId}/>; + } + return ( + <div + ref={this.setRef} + role='region' + aria-labelledby={columnHeaderId} + className='column' + onWheel={this.handleWheel}> + {header} + {children} + </div> + ); + } + +} + +Column.propTypes = { + heading: PropTypes.string, + icon: PropTypes.string, + children: PropTypes.node, + active: PropTypes.bool, + hideHeadingOnMobile: PropTypes.bool +}; + +export default Column; |