Thibaut Girka
6 years ago
committed by
ThibG
parent
0541e4ad21
commit
b35b38f4ea
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import React from 'react';
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import AutosuggestAccountContainer from 'flavours/glitch/features/compose/containers/autosuggest_account_container';
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import AutosuggestEmoji from './autosuggest_emoji';
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import ImmutablePropTypes from 'react-immutable-proptypes';
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import PropTypes from 'prop-types';
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import { isRtl } from 'flavours/glitch/util/rtl';
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import ImmutablePureComponent from 'react-immutable-pure-component';
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import classNames from 'classnames';
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import { List as ImmutableList } from 'immutable';
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const textAtCursorMatchesToken = (str, caretPosition, searchTokens) => {
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let word;
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let left = str.slice(0, caretPosition).search(/[^\s\u200B]+$/);
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let right = str.slice(caretPosition).search(/[\s\u200B]/);
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if (right < 0) {
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word = str.slice(left);
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} else {
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word = str.slice(left, right + caretPosition);
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}
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if (!word || word.trim().length < 3 || searchTokens.indexOf(word[0]) === -1) {
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return [null, null];
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}
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word = word.trim().toLowerCase();
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if (word.length > 0) {
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return [left, word];
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} else {
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return [null, null];
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}
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};
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export default class AutosuggestInput extends ImmutablePureComponent {
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static propTypes = {
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value: PropTypes.string,
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suggestions: ImmutablePropTypes.list,
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disabled: PropTypes.bool,
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placeholder: PropTypes.string,
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onSuggestionSelected: PropTypes.func.isRequired,
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onSuggestionsClearRequested: PropTypes.func.isRequired,
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onSuggestionsFetchRequested: PropTypes.func.isRequired,
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onChange: PropTypes.func.isRequired,
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onKeyUp: PropTypes.func,
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onKeyDown: PropTypes.func,
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autoFocus: PropTypes.bool,
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className: PropTypes.string,
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id: PropTypes.string,
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searchTokens: PropTypes.list,
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};
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static defaultProps = {
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autoFocus: true,
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searchTokens: ImmutableList(['@', ':', '#']),
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};
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state = {
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suggestionsHidden: false,
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focused: false,
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selectedSuggestion: 0,
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lastToken: null,
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tokenStart: 0,
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};
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onChange = (e) => {
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const [ tokenStart, token ] = textAtCursorMatchesToken(e.target.value, e.target.selectionStart, this.props.searchTokens);
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if (token !== null && this.state.lastToken !== token) {
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this.setState({ lastToken: token, selectedSuggestion: 0, tokenStart });
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this.props.onSuggestionsFetchRequested(token);
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} else if (token === null) {
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this.setState({ lastToken: null });
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this.props.onSuggestionsClearRequested();
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}
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this.props.onChange(e);
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}
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onKeyDown = (e) => {
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const { suggestions, disabled } = this.props;
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const { selectedSuggestion, suggestionsHidden } = this.state;
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if (disabled) {
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e.preventDefault();
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return;
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}
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if (e.which === 229 || e.isComposing) {
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// Ignore key events during text composition
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// e.key may be a name of the physical key even in this case (e.x. Safari / Chrome on Mac)
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return;
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}
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switch(e.key) {
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case 'Escape':
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if (suggestions.size === 0 || suggestionsHidden) {
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document.querySelector('.ui').parentElement.focus();
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} else {
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e.preventDefault();
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this.setState({ suggestionsHidden: true });
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}
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break;
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case 'ArrowDown':
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if (suggestions.size > 0 && !suggestionsHidden) {
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e.preventDefault();
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this.setState({ selectedSuggestion: Math.min(selectedSuggestion + 1, suggestions.size - 1) });
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}
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break;
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case 'ArrowUp':
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if (suggestions.size > 0 && !suggestionsHidden) {
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e.preventDefault();
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this.setState({ selectedSuggestion: Math.max(selectedSuggestion - 1, 0) });
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}
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break;
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case 'Enter':
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case 'Tab':
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// Select suggestion
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if (this.state.lastToken !== null && suggestions.size > 0 && !suggestionsHidden) {
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e.preventDefault();
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e.stopPropagation();
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this.props.onSuggestionSelected(this.state.tokenStart, this.state.lastToken, suggestions.get(selectedSuggestion));
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}
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break;
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}
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if (e.defaultPrevented || !this.props.onKeyDown) {
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return;
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}
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this.props.onKeyDown(e);
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}
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onBlur = () => {
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this.setState({ suggestionsHidden: true, focused: false });
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}
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onFocus = () => {
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this.setState({ focused: true });
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}
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onSuggestionClick = (e) => {
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const suggestion = this.props.suggestions.get(e.currentTarget.getAttribute('data-index'));
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e.preventDefault();
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this.props.onSuggestionSelected(this.state.tokenStart, this.state.lastToken, suggestion);
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this.input.focus();
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}
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componentWillReceiveProps (nextProps) {
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if (nextProps.suggestions !== this.props.suggestions && nextProps.suggestions.size > 0 && this.state.suggestionsHidden && this.state.focused) {
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this.setState({ suggestionsHidden: false });
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}
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}
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setInput = (c) => {
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this.input = c;
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}
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renderSuggestion = (suggestion, i) => {
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const { selectedSuggestion } = this.state;
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let inner, key;
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if (typeof suggestion === 'object') {
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inner = <AutosuggestEmoji emoji={suggestion} />;
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key = suggestion.id;
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} else if (suggestion[0] === '#') {
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inner = suggestion;
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key = suggestion;
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} else {
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inner = <AutosuggestAccountContainer id={suggestion} />;
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key = suggestion;
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}
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return (
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<div role='button' tabIndex='0' key={key} data-index={i} className={classNames('autosuggest-textarea__suggestions__item', { selected: i === selectedSuggestion })} onMouseDown={this.onSuggestionClick}>
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{inner}
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</div>
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);
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}
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render () {
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const { value, suggestions, disabled, placeholder, onKeyUp, autoFocus, className, id } = this.props;
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const { suggestionsHidden } = this.state;
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const style = { direction: 'ltr' };
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if (isRtl(value)) {
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style.direction = 'rtl';
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}
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return (
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<div className='autosuggest-input'>
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<label>
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<span style={{ display: 'none' }}>{placeholder}</span>
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<input
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type='text'
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ref={this.setInput}
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disabled={disabled}
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placeholder={placeholder}
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autoFocus={autoFocus}
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value={value}
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onChange={this.onChange}
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onKeyDown={this.onKeyDown}
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onKeyUp={onKeyUp}
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onFocus={this.onFocus}
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onBlur={this.onBlur}
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style={style}
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aria-autocomplete='list'
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id={id}
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className={className}
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/>
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</label>
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<div className={`autosuggest-textarea__suggestions ${suggestionsHidden || suggestions.isEmpty() ? '' : 'autosuggest-textarea__suggestions--visible'}`}>
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{suggestions.map(this.renderSuggestion)}
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</div>
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</div>
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);
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}
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}
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