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- import React from 'react';
- import AutosuggestAccountContainer from '../features/compose/containers/autosuggest_account_container';
- import AutosuggestEmoji from './autosuggest_emoji';
- import AutosuggestHashtag from './autosuggest_hashtag';
- import ImmutablePropTypes from 'react-immutable-proptypes';
- import PropTypes from 'prop-types';
- import ImmutablePureComponent from 'react-immutable-pure-component';
- import Textarea from 'react-textarea-autosize';
- import classNames from 'classnames';
- const textAtCursorMatchesToken = (str, caretPosition) => {
- let word;
- let left = str.slice(0, caretPosition).search(/\S+$/);
- let right = str.slice(caretPosition).search(/\s/);
- if (right < 0) {
- word = str.slice(left);
- } else {
- word = str.slice(left, right + caretPosition);
- }
- if (!word || word.trim().length < 3 || ['@', ':', '#'].indexOf(word[0]) === -1) {
- return [null, null];
- }
- word = word.trim().toLowerCase();
- if (word.length > 0) {
- return [left + 1, word];
- } else {
- return [null, null];
- }
- };
- export default class AutosuggestTextarea extends ImmutablePureComponent {
- static propTypes = {
- value: PropTypes.string,
- suggestions: ImmutablePropTypes.list,
- disabled: PropTypes.bool,
- placeholder: PropTypes.string,
- onSuggestionSelected: PropTypes.func.isRequired,
- onSuggestionsClearRequested: PropTypes.func.isRequired,
- onSuggestionsFetchRequested: PropTypes.func.isRequired,
- onChange: PropTypes.func.isRequired,
- onKeyUp: PropTypes.func,
- onKeyDown: PropTypes.func,
- onPaste: PropTypes.func.isRequired,
- autoFocus: PropTypes.bool,
- };
- static defaultProps = {
- autoFocus: true,
- };
- state = {
- suggestionsHidden: true,
- focused: false,
- selectedSuggestion: 0,
- lastToken: null,
- tokenStart: 0,
- };
- onChange = (e) => {
- const [ tokenStart, token ] = textAtCursorMatchesToken(e.target.value, e.target.selectionStart);
- if (token !== null && this.state.lastToken !== token) {
- this.setState({ lastToken: token, selectedSuggestion: 0, tokenStart });
- this.props.onSuggestionsFetchRequested(token);
- } else if (token === null) {
- this.setState({ lastToken: null });
- this.props.onSuggestionsClearRequested();
- }
- this.props.onChange(e);
- }
- onKeyDown = (e) => {
- const { suggestions, disabled } = this.props;
- const { selectedSuggestion, suggestionsHidden } = this.state;
- if (disabled) {
- e.preventDefault();
- return;
- }
- if (e.which === 229 || e.isComposing) {
- // Ignore key events during text composition
- // e.key may be a name of the physical key even in this case (e.x. Safari / Chrome on Mac)
- return;
- }
- switch(e.key) {
- case 'Escape':
- if (suggestions.size === 0 || suggestionsHidden) {
- document.querySelector('.ui').parentElement.focus();
- } else {
- e.preventDefault();
- this.setState({ suggestionsHidden: true });
- }
- break;
- case 'ArrowDown':
- if (suggestions.size > 0 && !suggestionsHidden) {
- e.preventDefault();
- this.setState({ selectedSuggestion: Math.min(selectedSuggestion + 1, suggestions.size - 1) });
- }
- break;
- case 'ArrowUp':
- if (suggestions.size > 0 && !suggestionsHidden) {
- e.preventDefault();
- this.setState({ selectedSuggestion: Math.max(selectedSuggestion - 1, 0) });
- }
- break;
- case 'Enter':
- case 'Tab':
- // Select suggestion
- if (this.state.lastToken !== null && suggestions.size > 0 && !suggestionsHidden) {
- e.preventDefault();
- e.stopPropagation();
- this.props.onSuggestionSelected(this.state.tokenStart, this.state.lastToken, suggestions.get(selectedSuggestion));
- }
- break;
- }
- if (e.defaultPrevented || !this.props.onKeyDown) {
- return;
- }
- this.props.onKeyDown(e);
- }
- onBlur = () => {
- this.setState({ suggestionsHidden: true, focused: false });
- }
- onFocus = (e) => {
- this.setState({ focused: true });
- if (this.props.onFocus) {
- this.props.onFocus(e);
- }
- }
- onSuggestionClick = (e) => {
- const suggestion = this.props.suggestions.get(e.currentTarget.getAttribute('data-index'));
- e.preventDefault();
- this.props.onSuggestionSelected(this.state.tokenStart, this.state.lastToken, suggestion);
- this.textarea.focus();
- }
- componentWillReceiveProps (nextProps) {
- if (nextProps.suggestions !== this.props.suggestions && nextProps.suggestions.size > 0 && this.state.suggestionsHidden && this.state.focused) {
- this.setState({ suggestionsHidden: false });
- }
- }
- setTextarea = (c) => {
- this.textarea = c;
- }
- onPaste = (e) => {
- if (e.clipboardData && e.clipboardData.files.length === 1) {
- this.props.onPaste(e.clipboardData.files);
- e.preventDefault();
- }
- }
- renderSuggestion = (suggestion, i) => {
- const { selectedSuggestion } = this.state;
- let inner, key;
- if (suggestion.type === 'emoji') {
- inner = <AutosuggestEmoji emoji={suggestion} />;
- key = suggestion.id;
- } else if (suggestion.type === 'hashtag') {
- inner = <AutosuggestHashtag tag={suggestion} />;
- key = suggestion.name;
- } else if (suggestion.type === 'account') {
- inner = <AutosuggestAccountContainer id={suggestion.id} />;
- key = suggestion.id;
- }
- return (
- <div role='button' tabIndex='0' key={key} data-index={i} className={classNames('autosuggest-textarea__suggestions__item', { selected: i === selectedSuggestion })} onMouseDown={this.onSuggestionClick}>
- {inner}
- </div>
- );
- }
- render () {
- const { value, suggestions, disabled, placeholder, onKeyUp, autoFocus, children } = this.props;
- const { suggestionsHidden } = this.state;
- return [
- <div className='compose-form__autosuggest-wrapper' key='autosuggest-wrapper'>
- <div className='autosuggest-textarea'>
- <label>
- <span style={{ display: 'none' }}>{placeholder}</span>
- <Textarea
- ref={this.setTextarea}
- className='autosuggest-textarea__textarea'
- disabled={disabled}
- placeholder={placeholder}
- autoFocus={autoFocus}
- value={value}
- onChange={this.onChange}
- onKeyDown={this.onKeyDown}
- onKeyUp={onKeyUp}
- onFocus={this.onFocus}
- onBlur={this.onBlur}
- onPaste={this.onPaste}
- dir='auto'
- aria-autocomplete='list'
- />
- </label>
- </div>
- {children}
- </div>,
- <div className='autosuggest-textarea__suggestions-wrapper' key='suggestions-wrapper'>
- <div className={`autosuggest-textarea__suggestions ${suggestionsHidden || suggestions.isEmpty() ? '' : 'autosuggest-textarea__suggestions--visible'}`}>
- {suggestions.map(this.renderSuggestion)}
- </div>
- </div>,
- ];
- }
- }
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