hometown/app/javascript/mastodon/components/dropdown_menu.js
Sorin Davidoi 2c405aed55 Performance improvements (#3168)
* refactor(components/status_list): Avoid quering scrollTop if not necessary

* refactor(components/dropdown_menu): Do not render items if not expanded

* refactor: Cherry-pick react-motion imports

* refactor(compose/privacy_dropdown): Do not render options if not open

* refactor(components/column_collapsable): Do not render children if collapsed
2017-05-20 14:58:13 +02:00

94 lines
2.3 KiB
JavaScript

import React from 'react';
import Dropdown, { DropdownTrigger, DropdownContent } from 'react-simple-dropdown';
import PropTypes from 'prop-types';
class DropdownMenu extends React.PureComponent {
static contextTypes = {
router: PropTypes.object
};
static propTypes = {
icon: PropTypes.string.isRequired,
items: PropTypes.array.isRequired,
size: PropTypes.number.isRequired,
direction: PropTypes.string,
ariaLabel: PropTypes.string
};
static defaultProps = {
ariaLabel: "Menu"
};
state = {
direction: 'left',
expanded: false,
};
setRef = (c) => {
this.dropdown = c;
}
handleClick = (e) => {
const i = Number(e.currentTarget.getAttribute('data-index'));
const { action, to } = this.props.items[i];
e.preventDefault();
if (typeof action === 'function') {
action();
} else if (to) {
this.context.router.push(to);
}
this.dropdown.hide();
}
handleShow = () => this.setState({ expanded: true })
handleHide = () => this.setState({ expanded: false })
renderItem = (item, i) => {
if (item === null) {
return <li key={ 'sep' + i } className='dropdown__sep' />;
}
const { text, action, href = '#' } = item;
return (
<li className='dropdown__content-list-item' key={ text + i }>
<a href={href} target='_blank' rel='noopener' onClick={this.handleClick} data-index={i} className='dropdown__content-list-link'>
{text}
</a>
</li>
);
}
render () {
const { icon, items, size, direction, ariaLabel } = this.props;
const { expanded } = this.state;
const directionClass = (direction === "left") ? "dropdown__left" : "dropdown__right";
const dropdownItems = expanded && (
<ul className='dropdown__content-list'>
{items.map(this.renderItem)}
</ul>
);
return (
<Dropdown ref={this.setRef} onShow={this.handleShow} onHide={this.handleHide}>
<DropdownTrigger className='icon-button' style={{ fontSize: `${size}px`, width: `${size}px`, lineHeight: `${size}px` }} aria-label={ariaLabel}>
<i className={ `fa fa-fw fa-${icon} dropdown__icon` } aria-hidden={true} />
</DropdownTrigger>
<DropdownContent className={directionClass}>
{dropdownItems}
</DropdownContent>
</Dropdown>
);
}
}
export default DropdownMenu;