import AutosuggestAccountContainer from '../features/compose/containers/autosuggest_account_container'; import ImmutablePropTypes from 'react-immutable-proptypes'; 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 < 2 || word[0] !== '@') { return [null, null]; } word = word.trim().toLowerCase().slice(1); if (word.length > 0) { return [left + 1, word]; } else { return [null, null]; } }; const AutosuggestTextarea = React.createClass({ propTypes: { value: React.PropTypes.string, suggestions: ImmutablePropTypes.list, disabled: React.PropTypes.bool, fileDropDate: React.PropTypes.instanceOf(Date), placeholder: React.PropTypes.string, onSuggestionSelected: React.PropTypes.func.isRequired, onSuggestionsClearRequested: React.PropTypes.func.isRequired, onSuggestionsFetchRequested: React.PropTypes.func.isRequired, onChange: React.PropTypes.func.isRequired, onKeyUp: React.PropTypes.func, onKeyDown: React.PropTypes.func }, getInitialState () { return { isFileDragging: false, fileDraggingDate: undefined, suggestionsHidden: 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; } switch(e.key) { case 'Escape': if (!suggestionsHidden) { 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 () { // If we hide the suggestions immediately, then this will prevent the // onClick for the suggestions themselves from firing. // Setting a short window for that to take place before hiding the // suggestions ensures that can't happen. setTimeout(() => { this.setState({ suggestionsHidden: true }); }, 100); }, onSuggestionClick (suggestion, e) { 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.setState({ suggestionsHidden: false }); } const fileDropDate = nextProps.fileDropDate; const { isFileDragging, fileDraggingDate } = this.state; /* * We can't detect drop events, because they might not be on the textarea (the app allows dropping anywhere in the * window). Instead, on-drop, we notify this textarea to stop its hover effect by passing in a prop with the * drop-date. */ if (isFileDragging && fileDraggingDate && fileDropDate // if dragging when props updated, and dates aren't undefined && fileDropDate > fileDraggingDate) { // and if the drop date is now greater than when we started dragging // then we should stop dragging this.setState({ isFileDragging: false }); } }, setTextarea (c) { this.textarea = c; }, onDragEnter () { this.setState({ isFileDragging: true, fileDraggingDate: new Date() }) }, onDragExit () { this.setState({ isFileDragging: false }) }, render () { const { value, suggestions, fileDropDate, disabled, placeholder, onKeyUp } = this.props; const { isFileDragging, suggestionsHidden, selectedSuggestion } = this.state; const className = isFileDragging ? 'autosuggest-textarea__textarea file-drop' : 'autosuggest-textarea__textarea'; return (