// Package imports. import PropTypes from 'prop-types'; import React from 'react'; import ImmutablePureComponent from 'react-immutable-pure-component'; import classNames from 'classnames'; // Components. import Icon from 'flavours/glitch/components/icon'; // Utils. import { withPassive } from 'flavours/glitch/utils/dom_helpers'; import { assignHandlers } from 'flavours/glitch/utils/react_helpers'; // The component. export default class ComposerOptionsDropdownContent extends React.PureComponent { static propTypes = { items: PropTypes.arrayOf(PropTypes.shape({ icon: PropTypes.string, meta: PropTypes.node, name: PropTypes.string.isRequired, text: PropTypes.node, })), onChange: PropTypes.func.isRequired, onClose: PropTypes.func.isRequired, style: PropTypes.object, value: PropTypes.string, renderItemContents: PropTypes.func, openedViaKeyboard: PropTypes.bool, closeOnChange: PropTypes.bool, }; static defaultProps = { style: {}, closeOnChange: true, }; state = { value: this.props.openedViaKeyboard ? this.props.items[0].name : undefined, }; // When the document is clicked elsewhere, we close the dropdown. handleDocumentClick = (e) => { if (this.node && !this.node.contains(e.target)) { this.props.onClose(); } }; // Stores our node in `this.node`. setRef = (node) => { this.node = node; }; // On mounting, we add our listeners. componentDidMount () { document.addEventListener('click', this.handleDocumentClick, false); document.addEventListener('touchend', this.handleDocumentClick, withPassive); if (this.focusedItem) { this.focusedItem.focus({ preventScroll: true }); } else { this.node.firstChild.focus({ preventScroll: true }); } } // On unmounting, we remove our listeners. componentWillUnmount () { document.removeEventListener('click', this.handleDocumentClick, false); document.removeEventListener('touchend', this.handleDocumentClick, withPassive); } handleClick = (e) => { const i = Number(e.currentTarget.getAttribute('data-index')); const { onChange, onClose, closeOnChange, items, } = this.props; const { name } = this.props.items[i]; e.preventDefault(); // Prevents change in focus on click if (closeOnChange) { onClose(); } onChange(name); }; // Handle changes differently whether the dropdown is a list of options or actions handleChange = (name) => { if (this.props.value) { this.props.onChange(name); } else { this.setState({ value: name }); } }; handleKeyDown = (e) => { const index = Number(e.currentTarget.getAttribute('data-index')); const { items } = this.props; let element = null; switch(e.key) { case 'Escape': this.props.onClose(); break; case 'Enter': case ' ': this.handleClick(e); break; case 'ArrowDown': element = this.node.childNodes[index + 1] || this.node.firstChild; break; case 'ArrowUp': element = this.node.childNodes[index - 1] || this.node.lastChild; break; case 'Tab': if (e.shiftKey) { element = this.node.childNodes[index - 1] || this.node.lastChild; } else { element = this.node.childNodes[index + 1] || this.node.firstChild; } break; case 'Home': element = this.node.firstChild; break; case 'End': element = this.node.lastChild; break; } if (element) { element.focus(); this.handleChange(this.props.items[Number(element.getAttribute('data-index'))].name); e.preventDefault(); e.stopPropagation(); } }; setFocusRef = c => { this.focusedItem = c; }; renderItem = (item, i) => { const { name, icon, meta, text } = item; const active = (name === (this.props.value || this.state.value)); const computedClass = classNames('privacy-dropdown__option', { active }); let contents = this.props.renderItemContents && this.props.renderItemContents(item, i); if (!contents) { contents = ( <React.Fragment> {icon && <Icon className='icon' fixedWidth id={icon} />} <div className='privacy-dropdown__option__content'> <strong>{text}</strong> {meta} </div> </React.Fragment> ); } return ( <div className={computedClass} onClick={this.handleClick} onKeyDown={this.handleKeyDown} role='option' tabIndex='0' key={name} data-index={i} ref={active ? this.setFocusRef : null} > {contents} </div> ); }; // Rendering. render () { const { items, onChange, onClose, style, } = this.props; // The result. return ( <div style={{ ...style }} role='listbox' ref={this.setRef}> {!!items && items.map((item, i) => this.renderItem(item, i))} </div> ); } }