332 lines
9.8 KiB
JavaScript
332 lines
9.8 KiB
JavaScript
import React from 'react';
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import PropTypes from 'prop-types';
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import { injectIntl, defineMessages } from 'react-intl';
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import TextIconButton from './text_icon_button';
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import Overlay from 'react-overlays/lib/Overlay';
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import Motion from 'flavours/glitch/util/optional_motion';
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import spring from 'react-motion/lib/spring';
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import { supportsPassiveEvents } from 'detect-passive-events';
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import classNames from 'classnames';
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import { languages as preloadedLanguages } from 'flavours/glitch/util/initial_state';
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import fuzzysort from 'fuzzysort';
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const messages = defineMessages({
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changeLanguage: { id: 'compose.language.change', defaultMessage: 'Change language' },
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search: { id: 'compose.language.search', defaultMessage: 'Search languages...' },
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clear: { id: 'emoji_button.clear', defaultMessage: 'Clear' },
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});
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// Copied from emoji-mart for consistency with emoji picker and since
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// they don't export the icons in the package
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const icons = {
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loupe: (
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<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' width='13' height='13'>
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<path d='M12.9 14.32a8 8 0 1 1 1.41-1.41l5.35 5.33-1.42 1.42-5.33-5.34zM8 14A6 6 0 1 0 8 2a6 6 0 0 0 0 12z' />
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</svg>
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),
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delete: (
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<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' width='13' height='13'>
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<path d='M10 8.586L2.929 1.515 1.515 2.929 8.586 10l-7.071 7.071 1.414 1.414L10 11.414l7.071 7.071 1.414-1.414L11.414 10l7.071-7.071-1.414-1.414L10 8.586z' />
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</svg>
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),
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};
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const listenerOptions = supportsPassiveEvents ? { passive: true } : false;
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class LanguageDropdownMenu extends React.PureComponent {
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static propTypes = {
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style: PropTypes.object,
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value: PropTypes.string.isRequired,
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frequentlyUsedLanguages: PropTypes.arrayOf(PropTypes.string).isRequired,
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placement: PropTypes.string.isRequired,
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onClose: PropTypes.func.isRequired,
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onChange: PropTypes.func.isRequired,
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languages: PropTypes.arrayOf(PropTypes.arrayOf(PropTypes.string)),
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intl: PropTypes.object,
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};
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static defaultProps = {
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languages: preloadedLanguages,
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};
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state = {
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mounted: false,
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searchValue: '',
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};
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handleDocumentClick = e => {
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if (this.node && !this.node.contains(e.target)) {
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this.props.onClose();
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}
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}
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componentDidMount () {
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document.addEventListener('click', this.handleDocumentClick, false);
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document.addEventListener('touchend', this.handleDocumentClick, listenerOptions);
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this.setState({ mounted: true });
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}
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componentWillUnmount () {
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document.removeEventListener('click', this.handleDocumentClick, false);
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document.removeEventListener('touchend', this.handleDocumentClick, listenerOptions);
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}
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setRef = c => {
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this.node = c;
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}
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setListRef = c => {
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this.listNode = c;
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}
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handleSearchChange = ({ target }) => {
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this.setState({ searchValue: target.value });
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}
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search () {
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const { languages, value, frequentlyUsedLanguages } = this.props;
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const { searchValue } = this.state;
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if (searchValue === '') {
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return [...languages].sort((a, b) => {
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// Push current selection to the top of the list
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if (a[0] === value) {
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return -1;
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} else if (b[0] === value) {
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return 1;
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} else {
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// Sort according to frequently used languages
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const indexOfA = frequentlyUsedLanguages.indexOf(a[0]);
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const indexOfB = frequentlyUsedLanguages.indexOf(b[0]);
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return ((indexOfA > -1 ? indexOfA : Infinity) - (indexOfB > -1 ? indexOfB : Infinity));
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}
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});
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}
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return fuzzysort.go(searchValue, languages, {
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keys: ['0', '1', '2'],
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limit: 5,
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threshold: -10000,
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}).map(result => result.obj);
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}
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frequentlyUsed () {
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const { languages, value } = this.props;
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const current = languages.find(lang => lang[0] === value);
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const results = [];
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if (current) {
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results.push(current);
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}
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return results;
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}
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handleClick = e => {
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const value = e.currentTarget.getAttribute('data-index');
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e.preventDefault();
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this.props.onClose();
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this.props.onChange(value);
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}
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handleKeyDown = e => {
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const { onClose } = this.props;
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const index = Array.from(this.listNode.childNodes).findIndex(node => node === e.currentTarget);
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let element = null;
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switch(e.key) {
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case 'Escape':
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onClose();
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break;
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case 'Enter':
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this.handleClick(e);
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break;
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case 'ArrowDown':
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element = this.listNode.childNodes[index + 1] || this.listNode.firstChild;
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break;
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case 'ArrowUp':
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element = this.listNode.childNodes[index - 1] || this.listNode.lastChild;
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break;
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case 'Tab':
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if (e.shiftKey) {
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element = this.listNode.childNodes[index - 1] || this.listNode.lastChild;
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} else {
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element = this.listNode.childNodes[index + 1] || this.listNode.firstChild;
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}
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break;
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case 'Home':
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element = this.listNode.firstChild;
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break;
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case 'End':
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element = this.listNode.lastChild;
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break;
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}
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if (element) {
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element.focus();
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e.preventDefault();
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e.stopPropagation();
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}
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}
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handleSearchKeyDown = e => {
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const { onChange, onClose } = this.props;
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const { searchValue } = this.state;
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let element = null;
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switch(e.key) {
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case 'Tab':
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case 'ArrowDown':
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element = this.listNode.firstChild;
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if (element) {
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element.focus();
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e.preventDefault();
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e.stopPropagation();
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}
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break;
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case 'Enter':
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element = this.listNode.firstChild;
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if (element) {
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onChange(element.getAttribute('data-index'));
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onClose();
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}
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break;
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case 'Escape':
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if (searchValue !== '') {
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e.preventDefault();
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this.handleClear();
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}
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break;
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}
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}
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handleClear = () => {
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this.setState({ searchValue: '' });
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}
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renderItem = lang => {
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const { value } = this.props;
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return (
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<div key={lang[0]} role='option' tabIndex='0' data-index={lang[0]} className={classNames('language-dropdown__dropdown__results__item', { active: lang[0] === value })} aria-selected={lang[0] === value} onClick={this.handleClick} onKeyDown={this.handleKeyDown}>
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<span className='language-dropdown__dropdown__results__item__native-name'>{lang[2]}</span> <span className='language-dropdown__dropdown__results__item__common-name'>({lang[1]})</span>
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</div>
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);
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}
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render () {
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const { style, placement, intl } = this.props;
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const { mounted, searchValue } = this.state;
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const isSearching = searchValue !== '';
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const results = this.search();
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return (
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<Motion defaultStyle={{ opacity: 0, scaleX: 0.85, scaleY: 0.75 }} style={{ opacity: spring(1, { damping: 35, stiffness: 400 }), scaleX: spring(1, { damping: 35, stiffness: 400 }), scaleY: spring(1, { damping: 35, stiffness: 400 }) }}>
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{({ opacity, scaleX, scaleY }) => (
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// It should not be transformed when mounting because the resulting
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// size will be used to determine the coordinate of the menu by
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// react-overlays
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<div className={`language-dropdown__dropdown ${placement}`} style={{ ...style, opacity: opacity, transform: mounted ? `scale(${scaleX}, ${scaleY})` : null }} ref={this.setRef}>
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<div className='emoji-mart-search'>
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<input type='search' value={searchValue} onChange={this.handleSearchChange} onKeyDown={this.handleSearchKeyDown} placeholder={intl.formatMessage(messages.search)} autoFocus />
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<button className='emoji-mart-search-icon' disabled={!isSearching} aria-label={intl.formatMessage(messages.clear)} onClick={this.handleClear}>{!isSearching ? icons.loupe : icons.delete}</button>
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</div>
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<div className='language-dropdown__dropdown__results emoji-mart-scroll' role='listbox' ref={this.setListRef}>
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{results.map(this.renderItem)}
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</div>
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</div>
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)}
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</Motion>
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);
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}
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}
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export default @injectIntl
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class LanguageDropdown extends React.PureComponent {
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static propTypes = {
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value: PropTypes.string,
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frequentlyUsedLanguages: PropTypes.arrayOf(PropTypes.string),
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intl: PropTypes.object.isRequired,
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onChange: PropTypes.func,
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onClose: PropTypes.func,
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};
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state = {
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open: false,
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placement: 'bottom',
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};
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handleToggle = ({ target }) => {
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const { top } = target.getBoundingClientRect();
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if (this.state.open && this.activeElement) {
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this.activeElement.focus({ preventScroll: true });
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}
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this.setState({ placement: top * 2 < innerHeight ? 'bottom' : 'top' });
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this.setState({ open: !this.state.open });
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}
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handleClose = () => {
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const { value, onClose } = this.props;
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if (this.state.open && this.activeElement) {
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this.activeElement.focus({ preventScroll: true });
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}
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this.setState({ open: false });
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onClose(value);
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}
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handleChange = value => {
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const { onChange } = this.props;
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onChange(value);
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}
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render () {
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const { value, intl, frequentlyUsedLanguages } = this.props;
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const { open, placement } = this.state;
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return (
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<div className={classNames('privacy-dropdown', { active: open })}>
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<div className='privacy-dropdown__value'>
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<TextIconButton
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className='privacy-dropdown__value-icon'
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label={value && value.toUpperCase()}
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title={intl.formatMessage(messages.changeLanguage)}
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active={open}
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onClick={this.handleToggle}
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/>
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</div>
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<Overlay show={open} placement={placement} target={this}>
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<LanguageDropdownMenu
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value={value}
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frequentlyUsedLanguages={frequentlyUsedLanguages}
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onClose={this.handleClose}
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onChange={this.handleChange}
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placement={placement}
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intl={intl}
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/>
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</Overlay>
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</div>
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);
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}
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}
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