- import React from 'react';
- import PropTypes from 'prop-types';
- import { injectIntl, defineMessages } from 'react-intl';
- import TextIconButton from './text_icon_button';
- import Overlay from 'react-overlays/Overlay';
- import { supportsPassiveEvents } from 'detect-passive-events';
- import classNames from 'classnames';
- import { languages as preloadedLanguages } from 'mastodon/initial_state';
- import { loupeIcon, deleteIcon } from 'mastodon/utils/icons';
- import fuzzysort from 'fuzzysort';
-
- const messages = defineMessages({
- changeLanguage: { id: 'compose.language.change', defaultMessage: 'Change language' },
- search: { id: 'compose.language.search', defaultMessage: 'Search languages...' },
- clear: { id: 'emoji_button.clear', defaultMessage: 'Clear' },
- });
-
- const listenerOptions = supportsPassiveEvents ? { passive: true } : false;
-
- class LanguageDropdownMenu extends React.PureComponent {
-
- static propTypes = {
- value: PropTypes.string.isRequired,
- frequentlyUsedLanguages: PropTypes.arrayOf(PropTypes.string).isRequired,
- onClose: PropTypes.func.isRequired,
- onChange: PropTypes.func.isRequired,
- languages: PropTypes.arrayOf(PropTypes.arrayOf(PropTypes.string)),
- intl: PropTypes.object,
- };
-
- static defaultProps = {
- languages: preloadedLanguages,
- };
-
- state = {
- searchValue: '',
- };
-
- handleDocumentClick = e => {
- if (this.node && !this.node.contains(e.target)) {
- this.props.onClose();
- }
- };
-
- componentDidMount () {
- document.addEventListener('click', this.handleDocumentClick, false);
- document.addEventListener('touchend', this.handleDocumentClick, listenerOptions);
-
- // Because of https://github.com/react-bootstrap/react-bootstrap/issues/2614 we need
- // to wait for a frame before focusing
- requestAnimationFrame(() => {
- if (this.node) {
- const element = this.node.querySelector('input[type="search"]');
- if (element) element.focus();
- }
- });
- }
-
- componentWillUnmount () {
- document.removeEventListener('click', this.handleDocumentClick, false);
- document.removeEventListener('touchend', this.handleDocumentClick, listenerOptions);
- }
-
- setRef = c => {
- this.node = c;
- };
-
- setListRef = c => {
- this.listNode = c;
- };
-
- handleSearchChange = ({ target }) => {
- this.setState({ searchValue: target.value });
- };
-
- search () {
- const { languages, value, frequentlyUsedLanguages } = this.props;
- const { searchValue } = this.state;
-
- if (searchValue === '') {
- return [...languages].sort((a, b) => {
- // Push current selection to the top of the list
-
- if (a[0] === value) {
- return -1;
- } else if (b[0] === value) {
- return 1;
- } else {
- // Sort according to frequently used languages
-
- const indexOfA = frequentlyUsedLanguages.indexOf(a[0]);
- const indexOfB = frequentlyUsedLanguages.indexOf(b[0]);
-
- return ((indexOfA > -1 ? indexOfA : Infinity) - (indexOfB > -1 ? indexOfB : Infinity));
- }
- });
- }
-
- return fuzzysort.go(searchValue, languages, {
- keys: ['0', '1', '2'],
- limit: 5,
- threshold: -10000,
- }).map(result => result.obj);
- }
-
- frequentlyUsed () {
- const { languages, value } = this.props;
- const current = languages.find(lang => lang[0] === value);
- const results = [];
-
- if (current) {
- results.push(current);
- }
-
- return results;
- }
-
- handleClick = e => {
- const value = e.currentTarget.getAttribute('data-index');
-
- e.preventDefault();
-
- this.props.onClose();
- this.props.onChange(value);
- };
-
- handleKeyDown = e => {
- const { onClose } = this.props;
- const index = Array.from(this.listNode.childNodes).findIndex(node => node === e.currentTarget);
-
- let element = null;
-
- switch(e.key) {
- case 'Escape':
- onClose();
- break;
- case 'Enter':
- this.handleClick(e);
- break;
- case 'ArrowDown':
- element = this.listNode.childNodes[index + 1] || this.listNode.firstChild;
- break;
- case 'ArrowUp':
- element = this.listNode.childNodes[index - 1] || this.listNode.lastChild;
- break;
- case 'Tab':
- if (e.shiftKey) {
- element = this.listNode.childNodes[index - 1] || this.listNode.lastChild;
- } else {
- element = this.listNode.childNodes[index + 1] || this.listNode.firstChild;
- }
- break;
- case 'Home':
- element = this.listNode.firstChild;
- break;
- case 'End':
- element = this.listNode.lastChild;
- break;
- }
-
- if (element) {
- element.focus();
- e.preventDefault();
- e.stopPropagation();
- }
- };
-
- handleSearchKeyDown = e => {
- const { onChange, onClose } = this.props;
- const { searchValue } = this.state;
-
- let element = null;
-
- switch(e.key) {
- case 'Tab':
- case 'ArrowDown':
- element = this.listNode.firstChild;
-
- if (element) {
- element.focus();
- e.preventDefault();
- e.stopPropagation();
- }
-
- break;
- case 'Enter':
- element = this.listNode.firstChild;
-
- if (element) {
- onChange(element.getAttribute('data-index'));
- onClose();
- }
- break;
- case 'Escape':
- if (searchValue !== '') {
- e.preventDefault();
- this.handleClear();
- }
-
- break;
- }
- };
-
- handleClear = () => {
- this.setState({ searchValue: '' });
- };
-
- renderItem = lang => {
- const { value } = this.props;
-
- return (
- <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}>
- <span className='language-dropdown__dropdown__results__item__native-name' lang={lang[0]}>{lang[2]}</span> <span className='language-dropdown__dropdown__results__item__common-name'>({lang[1]})</span>
- </div>
- );
- };
-
- render () {
- const { intl } = this.props;
- const { searchValue } = this.state;
- const isSearching = searchValue !== '';
- const results = this.search();
-
- return (
- <div ref={this.setRef}>
- <div className='emoji-mart-search'>
- <input type='search' value={searchValue} onChange={this.handleSearchChange} onKeyDown={this.handleSearchKeyDown} placeholder={intl.formatMessage(messages.search)} />
- <button type='button' className='emoji-mart-search-icon' disabled={!isSearching} aria-label={intl.formatMessage(messages.clear)} onClick={this.handleClear}>{!isSearching ? loupeIcon : deleteIcon}</button>
- </div>
-
- <div className='language-dropdown__dropdown__results emoji-mart-scroll' role='listbox' ref={this.setListRef}>
- {results.map(this.renderItem)}
- </div>
- </div>
- );
- }
-
- }
-
- class LanguageDropdown extends React.PureComponent {
-
- static propTypes = {
- value: PropTypes.string,
- frequentlyUsedLanguages: PropTypes.arrayOf(PropTypes.string),
- intl: PropTypes.object.isRequired,
- onChange: PropTypes.func,
- onClose: PropTypes.func,
- };
-
- state = {
- open: false,
- placement: 'bottom',
- };
-
- handleToggle = () => {
- if (this.state.open && this.activeElement) {
- this.activeElement.focus({ preventScroll: true });
- }
-
- this.setState({ open: !this.state.open });
- };
-
- handleClose = () => {
- const { value, onClose } = this.props;
-
- if (this.state.open && this.activeElement) {
- this.activeElement.focus({ preventScroll: true });
- }
-
- this.setState({ open: false });
- onClose(value);
- };
-
- handleChange = value => {
- const { onChange } = this.props;
- onChange(value);
- };
-
- setTargetRef = c => {
- this.target = c;
- };
-
- findTarget = () => {
- return this.target;
- };
-
- handleOverlayEnter = (state) => {
- this.setState({ placement: state.placement });
- };
-
- render () {
- const { value, intl, frequentlyUsedLanguages } = this.props;
- const { open, placement } = this.state;
-
- return (
- <div className={classNames('privacy-dropdown', placement, { active: open })}>
- <div className='privacy-dropdown__value' ref={this.setTargetRef} >
- <TextIconButton
- className='privacy-dropdown__value-icon'
- label={value && value.toUpperCase()}
- title={intl.formatMessage(messages.changeLanguage)}
- active={open}
- onClick={this.handleToggle}
- />
- </div>
-
- <Overlay show={open} placement={'bottom'} flip target={this.findTarget} popperConfig={{ strategy: 'fixed', onFirstUpdate: this.handleOverlayEnter }}>
- {({ props, placement }) => (
- <div {...props}>
- <div className={`dropdown-animation language-dropdown__dropdown ${placement}`} >
- <LanguageDropdownMenu
- value={value}
- frequentlyUsedLanguages={frequentlyUsedLanguages}
- onClose={this.handleClose}
- onChange={this.handleChange}
- intl={intl}
- />
- </div>
- </div>
- )}
- </Overlay>
- </div>
- );
- }
-
- }
-
- export default injectIntl(LanguageDropdown);
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