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multiple select with filters, like Django's
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| import React, { PropTypes as Type } from 'react'; | |
| import R from 'ramda'; | |
| const textFilter = str => | |
| R.filter( | |
| R.compose( | |
| R.test(new RegExp(str, 'i')), | |
| R.prop('text'), | |
| ) | |
| ); | |
| export const textValueShape = Type.shape({ | |
| text: Type.string.isRequired, | |
| value: Type.string.isRequired, | |
| }); | |
| function handleDragStartFactory(sourceIndex) { | |
| return e => { | |
| e.dataTransfer.effectAllowed = 'move'; // eslint-disable-line no-param-reassign | |
| e.dataTransfer.dropEffect = 'move'; // eslint-disable-line no-param-reassign | |
| e.dataTransfer.setData('text/plain', `${sourceIndex}`); | |
| }; | |
| } | |
| function handleDragOverFactory() { | |
| return e => { | |
| // we need to preventDefault otherwise effectAllowed will be cleared | |
| // and no onDrop event will be fired | |
| // https://developer.mozilla.org/en-US/docs/Web/API/DataTransfer/effectAllowed | |
| e.preventDefault(); | |
| }; | |
| } | |
| function handleDropFactory(targetIndex) { | |
| return e => { | |
| e.preventDefault(); | |
| const { chosen } = this.state; | |
| const sourceIndex = Number(e.dataTransfer.getData('text/plain')); | |
| const source = chosen[sourceIndex]; | |
| const withoutSource = R.remove(sourceIndex, 1, chosen); | |
| const withTarget = R.insert(targetIndex, source, withoutSource); | |
| this.setState({ | |
| chosen: withTarget, | |
| }); | |
| this.props.onChange(withTarget); | |
| }; | |
| } | |
| function handleChooseClickFactory(item) { | |
| return e => { | |
| e.preventDefault(); | |
| const { chosen } = this.state; | |
| const nextChosen = [...chosen, item]; | |
| this.setState({ | |
| chosen: nextChosen, | |
| }); | |
| this.props.onChange(nextChosen); | |
| }; | |
| } | |
| function handleRemoveClickFactory(item) { | |
| return e => { | |
| e.preventDefault(); | |
| const { chosen } = this.state; | |
| const nextChosen = R.without([item], chosen); // 1st param to R.without *must* be an array | |
| this.setState({ | |
| chosen: nextChosen, | |
| }); | |
| this.props.onChange(nextChosen); | |
| }; | |
| } | |
| function handleFilterChange(e) { | |
| e.preventDefault(); | |
| const nextFilter = e.target.value; | |
| this.setState({ | |
| filter: nextFilter, | |
| }); | |
| } | |
| function handleClearClick(e) { | |
| e.preventDefault(); | |
| this.setState({ | |
| filter: null, | |
| }); | |
| } | |
| export default class MultipleSelect extends React.Component { | |
| static propTypes = { | |
| choices: Type.arrayOf(textValueShape).isRequired, | |
| value: Type.arrayOf(textValueShape).isRequired, | |
| onChange: Type.func.isRequired, | |
| } | |
| constructor(props) { | |
| super(props); | |
| this.state = { | |
| chosen: props.value, | |
| }; | |
| } | |
| render() { | |
| const { choices } = this.props; | |
| const { filter, chosen } = this.state; | |
| const choicesWithoutChosen = R.without(chosen, choices); | |
| const filteredChoices = | |
| filter ? | |
| textFilter(filter)(choicesWithoutChosen) : | |
| choicesWithoutChosen; | |
| return ( | |
| <div> | |
| <p>Available</p> | |
| <p> | |
| Filtra: <input type="text" value={filter} onChange={this::handleFilterChange} /> | |
| <a href="#" onClick={this::handleClearClick}>pulisci</a> | |
| </p> | |
| <ul> | |
| {filteredChoices.map(item => | |
| <li key={item.value}> | |
| {item.text} ({item.value}) | |
| <button type="submit" onClick={this::handleChooseClickFactory(item)}>Choose</button> | |
| </li> | |
| )} | |
| </ul> | |
| <p>Chosen</p> | |
| <ul> | |
| {chosen.map((item, index) => | |
| <li | |
| draggable | |
| key={item.value} | |
| onDragOver={this::handleDragOverFactory(index)} | |
| onDragStart={this::handleDragStartFactory(index)} | |
| onDrop={this::handleDropFactory(index)} | |
| > | |
| {item.text} ({item.value}) | |
| <button type="submit" onClick={this::handleRemoveClickFactory(item)}>Remove</button> | |
| </li> | |
| )} | |
| </ul> | |
| </div> | |
| ); | |
| } | |
| } |
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