hometown/app/javascript/mastodon/components/dropdown_menu.js
Sorin Davidoi b7d47c2aef Improve accessibility (part 4) (#4408)
* fix(dropdown_menu): Keyboard navigation

* fix(icon_button): Add aria-pressed attribute

* fix(privacy_dropdown): Make accessible

* fix(emoji_picker_dropdown): Make accessible

* fix(icon_button): Support tabIndex

* fix(actions_modal): Remove icon from tab order

* fix(dropdown_menu): Add role=group

* fix(setting_toggle): Toggle via space key

* fix(dropdown_menu): Remove redundant handling of Space key

* fix(emoji_picker_dropdown): Remove redundant Space key handling

* fix(privacy_dropdown): Remove redundant Space key handling

* fix(status): Switch to article and add aria-posinset, aria-setsize

* fix(status_list): Use role=feed and pass more ARIA props to Status

* chore(eslint): jsx-a11y/role-supports-aria-props
2017-07-28 04:37:30 +02:00

147 lines
4.1 KiB
JavaScript

import React from 'react';
import ImmutablePropTypes from 'react-immutable-proptypes';
import Dropdown, { DropdownTrigger, DropdownContent } from 'react-simple-dropdown';
import PropTypes from 'prop-types';
export default class DropdownMenu extends React.PureComponent {
static contextTypes = {
router: PropTypes.object,
};
static propTypes = {
isUserTouching: PropTypes.func,
isModalOpen: PropTypes.bool.isRequired,
onModalOpen: PropTypes.func,
onModalClose: PropTypes.func,
icon: PropTypes.string.isRequired,
items: PropTypes.array.isRequired,
size: PropTypes.number.isRequired,
direction: PropTypes.string,
status: ImmutablePropTypes.map,
ariaLabel: PropTypes.string,
disabled: PropTypes.bool,
};
static defaultProps = {
ariaLabel: 'Menu',
isModalOpen: false,
isUserTouching: () => false,
};
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];
if (this.props.isModalOpen) {
this.props.onModalClose();
}
// Don't call e.preventDefault() when the item uses 'href' property.
// ex. "Edit profile" on the account action bar
if (typeof action === 'function') {
e.preventDefault();
action();
} else if (to) {
e.preventDefault();
this.context.router.history.push(to);
}
this.dropdown.hide();
}
handleShow = () => {
if (this.props.isUserTouching()) {
this.props.onModalOpen({
status: this.props.status,
actions: this.props.items,
onClick: this.handleClick,
});
} else {
this.setState({ expanded: true });
}
}
handleHide = () => this.setState({ expanded: false })
handleToggle = (e) => {
if (e.key === 'Enter') {
if (this.props.isUserTouching()) {
this.handleShow();
} else {
this.setState({ expanded: !this.state.expanded });
}
} else if (e.key === 'Escape') {
this.setState({ expanded: false });
}
}
renderItem = (item, i) => {
if (item === null) {
return <li key={`sep-${i}`} className='dropdown__sep' />;
}
const { text, href = '#' } = item;
return (
<li className='dropdown__content-list-item' key={`${text}-${i}`}>
<a href={href} target='_blank' rel='noopener' role='button' tabIndex='0' autoFocus={i === 0} onClick={this.handleClick} data-index={i} className='dropdown__content-list-link'>
{text}
</a>
</li>
);
}
render () {
const { icon, items, size, direction, ariaLabel, disabled } = this.props;
const { expanded } = this.state;
const isUserTouching = this.props.isUserTouching();
const directionClass = (direction === 'left') ? 'dropdown__left' : 'dropdown__right';
const iconStyle = { fontSize: `${size}px`, width: `${size}px`, lineHeight: `${size}px` };
const iconClassname = `fa fa-fw fa-${icon} dropdown__icon`;
if (disabled) {
return (
<div className='icon-button disabled' style={iconStyle} aria-label={ariaLabel}>
<i className={iconClassname} aria-hidden />
</div>
);
}
const dropdownItems = expanded && (
<ul role='group' className='dropdown__content-list' onClick={this.handleHide}>
{items.map(this.renderItem)}
</ul>
);
// No need to render the actual dropdown if we use the modal. If we
// don't render anything <Dropdow /> breaks, so we just put an empty div.
const dropdownContent = !isUserTouching ? (
<DropdownContent className={directionClass} >
{dropdownItems}
</DropdownContent>
) : <div />;
return (
<Dropdown ref={this.setRef} active={isUserTouching ? false : expanded} onShow={this.handleShow} onHide={this.handleHide}>
<DropdownTrigger className='icon-button' style={iconStyle} role='button' aria-pressed={expanded} onKeyDown={this.handleToggle} tabIndex='0' aria-label={ariaLabel}>
<i className={iconClassname} aria-hidden />
</DropdownTrigger>
{dropdownContent}
</Dropdown>
);
}
}