nyastodon/app/javascript/mastodon/components/column_collapsable.js

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import React from 'react';
import PropTypes from 'prop-types';
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class ColumnCollapsable extends React.PureComponent {
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static propTypes = {
icon: PropTypes.string.isRequired,
title: PropTypes.string,
fullHeight: PropTypes.number.isRequired,
children: PropTypes.node,
onCollapse: PropTypes.func,
};
state = {
collapsed: true,
animating: false,
};
handleToggleCollapsed = () => {
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const currentState = this.state.collapsed;
this.setState({ collapsed: !currentState, animating: true });
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if (!currentState && this.props.onCollapse) {
this.props.onCollapse();
}
}
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handleTransitionEnd = () => {
this.setState({ animating: false });
}
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render () {
const { icon, title, fullHeight, children } = this.props;
const { collapsed, animating } = this.state;
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return (
<div className={`column-collapsable ${collapsed ? 'collapsed' : ''}`} onTransitionEnd={this.handleTransitionEnd}>
<div role='button' tabIndex='0' title={`${title}`} className='column-collapsable__button column-icon' onClick={this.handleToggleCollapsed}>
<i className={`fa fa-${icon}`} />
</div>
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<div className='column-collapsable__content' style={{ height: `${fullHeight}px` }}>
{(!collapsed || animating) && children}
</div>
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</div>
);
}
}
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export default ColumnCollapsable;