1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 | 4x 4x 4x 4x 4x | import React, { Component, PropTypes } from 'react'; import Select from './Select2'; import stripDiacritics from './utils/stripDiacritics'; const propTypes = { autoload: React.PropTypes.bool.isRequired, // automatically call the `loadOptions` prop on-mount; defaults to true cache: React.PropTypes.any, // object to use to cache results; set to null/false to disable caching children: React.PropTypes.func.isRequired, // Child function responsible for creating the inner Select component; (props: Object): PropTypes.element ignoreAccents: React.PropTypes.bool, // strip diacritics when filtering; defaults to true ignoreCase: React.PropTypes.bool, // perform case-insensitive filtering; defaults to true loadingPlaceholder: React.PropTypes.oneOfType([ // replaces the placeholder while options are loading React.PropTypes.string, React.PropTypes.node ]), loadOptions: React.PropTypes.func.isRequired, // callback to load options asynchronously; (inputValue: string, callback: Function): ?Promise multi: React.PropTypes.bool, // multi-value input options: PropTypes.array.isRequired, // array of options placeholder: React.PropTypes.oneOfType([ // field placeholder, displayed when there's no value (shared with Select) React.PropTypes.string, React.PropTypes.node ]), noResultsText: React.PropTypes.oneOfType([ // field noResultsText, displayed when no options come back from the server React.PropTypes.string, React.PropTypes.node ]), onChange: React.PropTypes.func, // onChange handler: function (newValue) {} searchPromptText: React.PropTypes.oneOfType([ // label to prompt for search input React.PropTypes.string, React.PropTypes.node ]), onInputChange: React.PropTypes.func, // optional for keeping track of what is being typed value: React.PropTypes.any, // initial field value }; const defaultCache = {}; const defaultProps = { autoload: true, cache: defaultCache, children: defaultChildren, ignoreAccents: true, ignoreCase: true, loadingPlaceholder: 'Loading...', options: [], searchPromptText: 'Type to search', }; export default class Async extends Component { constructor (props, context) { super(props, context); this._cache = props.cache === defaultCache ? {} : props.cache; this.state = { isLoading: false, options: props.options, }; this._onInputChange = this._onInputChange.bind(this); } componentDidMount () { const { autoload } = this.props; if (autoload) { this.loadOptions(''); } } componentWillUpdate (nextProps, nextState) { const propertiesToSync = ['options']; propertiesToSync.forEach((prop) => { if (this.props[prop] !== nextProps[prop]) { this.setState({ [prop]: nextProps[prop] }); } }); } clearOptions() { this.setState({ options: [] }); } loadOptions (inputValue) { const { loadOptions } = this.props; const cache = this._cache; if ( cache && cache.hasOwnProperty(inputValue) ) { this.setState({ options: cache[inputValue] }); return; } const callback = (error, data) => { if (callback === this._callback) { this._callback = null; const options = data && data.options || []; if (cache) { cache[inputValue] = options; } this.setState({ isLoading: false, options }); } }; // Ignore all but the most recent request this._callback = callback; const promise = loadOptions(inputValue, callback); if (promise) { promise.then( (data) => callback(null, data), (error) => callback(error) ); } if ( this._callback && !this.state.isLoading ) { this.setState({ isLoading: true }); } return inputValue; } _onInputChange (inputValue) { const { ignoreAccents, ignoreCase, onInputChange } = this.props; if (ignoreAccents) { inputValue = stripDiacritics(inputValue); } if (ignoreCase) { inputValue = inputValue.toLowerCase(); } if (onInputChange) { onInputChange(inputValue); } return this.loadOptions(inputValue); } inputValue() { if (this.select) { return this.select.state.inputValue; } return ''; } noResultsText() { const { loadingPlaceholder, noResultsText, searchPromptText } = this.props; const { isLoading } = this.state; const inputValue = this.inputValue(); if (isLoading) { return loadingPlaceholder; } if (inputValue && noResultsText) { return noResultsText; } return searchPromptText; } focus () { this.select.focus(); } render () { const { children, loadingPlaceholder, placeholder } = this.props; const { isLoading, options } = this.state; const props = { noResultsText: this.noResultsText(), placeholder: isLoading ? loadingPlaceholder : placeholder, options: (isLoading && loadingPlaceholder) ? [] : options, ref: (ref) => (this.select = ref), onChange: (newValues) => { if (this.props.multi && this.props.value && (newValues.length > this.props.value.length)) { this.clearOptions(); } this.props.onChange(newValues); } }; return children({ ...this.props, ...props, isLoading, onInputChange: this._onInputChange }); } } Async.propTypes = propTypes; Async.defaultProps = defaultProps; function defaultChildren (props) { return ( <Select {...props} /> ); }; |