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386 lines
12 KiB
386 lines
12 KiB
<script>
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import PropTypes from '../_util/vue-types'
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import VcCascader from '../vc-cascader'
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import arrayTreeFilter from 'array-tree-filter'
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import classNames from 'classnames'
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import omit from 'omit.js'
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import KeyCode from '../_util/KeyCode'
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import Input from '../input'
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import Icon from '../icon'
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import { hasProp, filterEmpty, getOptionProps } from '../_util/props-util'
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import BaseMixin from '../_util/BaseMixin'
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const CascaderOptionType = PropTypes.shape({
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value: PropTypes.string.isRequired,
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label: PropTypes.any.isRequired,
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disabled: PropTypes.bool,
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children: PropTypes.array,
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__IS_FILTERED_OPTION: PropTypes.bool,
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}).loose
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const CascaderExpandTrigger = PropTypes.oneOf(['click', 'hover'])
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const ShowSearchType = PropTypes.shape({
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filter: PropTypes.func,
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render: PropTypes.func,
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sort: PropTypes.func,
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matchInputWidth: PropTypes.bool,
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}).loose
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function noop () {}
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const CascaderProps = {
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/** 可选项数据源 */
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options: PropTypes.arrayOf(CascaderOptionType).def([]),
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/** 默认的选中项 */
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defaultValue: PropTypes.arrayOf(PropTypes.string),
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/** 指定选中项 */
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value: PropTypes.arrayOf(PropTypes.string),
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/** 选择完成后的回调 */
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// onChange?: (value: string[], selectedOptions?: CascaderOptionType[]) => void;
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/** 选择后展示的渲染函数 */
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displayRender: PropTypes.func,
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transitionName: PropTypes.string.def('slide-up'),
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popupStyle: PropTypes.object.def({}),
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/** 自定义浮层类名 */
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popupClassName: PropTypes.string,
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/** 浮层预设位置：`bottomLeft` `bottomRight` `topLeft` `topRight` */
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popupPlacement: PropTypes.oneOf(['bottomLeft', 'bottomRight', 'topLeft', 'topRight']).def('bottomLeft'),
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/** 输入框占位文本*/
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placeholder: PropTypes.string.def('Please select'),
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/** 输入框大小，可选 `large` `default` `small` */
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size: PropTypes.oneOf(['large', 'default', 'small']),
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/** 禁用*/
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disabled: PropTypes.bool.def(false),
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/** 是否支持清除*/
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allowClear: PropTypes.bool.def(true),
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showSearch: PropTypes.oneOfType([PropTypes.bool, ShowSearchType]),
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notFoundContent: PropTypes.any.def('Not Found'),
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loadData: PropTypes.func,
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/** 次级菜单的展开方式，可选 'click' 和 'hover' */
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expandTrigger: CascaderExpandTrigger,
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/** 当此项为 true 时，点选每级菜单选项值都会发生变化 */
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changeOnSelect: PropTypes.bool,
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/** 浮层可见变化时回调 */
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// onPopupVisibleChange?: (popupVisible: boolean) => void;
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prefixCls: PropTypes.string.def('ant-cascader'),
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inputPrefixCls: PropTypes.string.def('ant-input'),
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getPopupContainer: PropTypes.func,
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popupVisible: PropTypes.bool,
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}
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function defaultFilterOption (inputValue, path) {
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return path.some(option => option.label.indexOf(inputValue) > -1)
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}
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function defaultSortFilteredOption (a, b, inputValue) {
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function callback (elem) {
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return elem.label.indexOf(inputValue) > -1
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}
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return a.findIndex(callback) - b.findIndex(callback)
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}
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const defaultDisplayRender = ({ labels }) => labels.join(' / ')
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export default {
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mixins: [BaseMixin],
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props: CascaderProps,
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model: {
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prop: 'value',
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event: 'change',
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},
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data () {
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this.cachedOptions = []
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const { value, defaultValue, popupVisible, showSearch, options, changeOnSelect, flattenTree } = this
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return {
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sValue: value || defaultValue || [],
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inputValue: '',
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inputFocused: false,
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sPopupVisible: popupVisible,
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flattenOptions: showSearch && flattenTree(options, changeOnSelect),
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}
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},
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watch: {
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value (val) {
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this.setState({ sValue: val || [] })
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},
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popupVisible (val) {
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this.setState({ sPopupVisible: val })
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},
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options (val) {
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if (this.showSearch) {
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this.setState({ flattenOptions: this.flattenTree(this.options, this.changeOnSelect) })
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}
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},
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},
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methods: {
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highlightKeyword (str, keyword, prefixCls) {
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return str.split(keyword)
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.map((node, index) => index === 0 ? node : [
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<span class={`${prefixCls}-menu-item-keyword`} key='seperator'>{keyword}</span>,
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node,
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])
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},
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defaultRenderFilteredOption ({ inputValue, path, prefixCls }) {
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return path.map(({ label }, index) => {
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const node = label.indexOf(inputValue) > -1
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? this.highlightKeyword(label, inputValue, prefixCls) : label
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return index === 0 ? node : [' / ', node]
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})
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},
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handleChange (value, selectedOptions) {
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this.setState({ inputValue: '' })
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if (selectedOptions[0].__IS_FILTERED_OPTION) {
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const unwrappedValue = value[0]
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const unwrappedSelectedOptions = selectedOptions[0].path
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this.setValue(unwrappedValue, unwrappedSelectedOptions)
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return
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}
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this.setValue(value, selectedOptions)
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},
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handlePopupVisibleChange (popupVisible) {
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if (!hasProp(this, 'popupVisible')) {
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this.setState({
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sPopupVisible: popupVisible,
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inputFocused: popupVisible,
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inputValue: popupVisible ? this.inputValue : '',
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})
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}
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this.$emit('popupVisibleChange', popupVisible)
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},
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handleInputBlur () {
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this.setState({
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inputFocused: false,
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})
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},
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handleInputClick (e) {
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const { inputFocused, sPopupVisible } = this
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// Prevent `Trigger` behaviour.
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if (inputFocused || sPopupVisible) {
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e.stopPropagation()
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e.nativeEvent.stopImmediatePropagation()
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}
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},
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handleKeyDown (e) {
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if (e.keyCode === KeyCode.BACKSPACE) {
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e.stopPropagation()
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}
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},
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handleInputChange (e) {
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const inputValue = e.target.value
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this.setState({ inputValue })
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},
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setValue (value, selectedOptions) {
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if (!hasProp(this, 'value')) {
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this.setState({ sValue: value })
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}
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this.$emit('change', value, selectedOptions)
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},
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getLabel () {
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const { options, $scopedSlots } = this
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const displayRender = this.displayRender || $scopedSlots.displayRender || defaultDisplayRender
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const value = this.sValue
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const unwrappedValue = Array.isArray(value[0]) ? value[0] : value
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const selectedOptions = arrayTreeFilter(options,
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(o, level) => o.value === unwrappedValue[level],
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)
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const labels = selectedOptions.map(o => o.label)
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return displayRender({ labels, selectedOptions })
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},
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clearSelection (e) {
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e.preventDefault()
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e.stopPropagation()
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if (!this.inputValue) {
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this.setValue([])
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this.handlePopupVisibleChange(false)
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} else {
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this.setState({ inputValue: '' })
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}
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},
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flattenTree (options, changeOnSelect, ancestor = []) {
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let flattenOptions = []
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options.forEach((option) => {
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const path = ancestor.concat(option)
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if (changeOnSelect || !option.children || !option.children.length) {
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flattenOptions.push(path)
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}
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if (option.children) {
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flattenOptions = flattenOptions.concat(this.flattenTree(option.children, changeOnSelect, path))
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}
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})
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return flattenOptions
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},
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generateFilteredOptions (prefixCls) {
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const { showSearch, notFoundContent, flattenOptions, inputValue, $scopedSlots } = this
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const {
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filter = defaultFilterOption,
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// render = this.defaultRenderFilteredOption,
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sort = defaultSortFilteredOption,
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} = showSearch
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const render = showSearch.render || $scopedSlots.showSearchRender || this.defaultRenderFilteredOption
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const filtered = flattenOptions.filter((path) => filter(inputValue, path))
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.sort((a, b) => sort(a, b, inputValue))
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if (filtered.length > 0) {
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return filtered.map((path) => {
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return {
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__IS_FILTERED_OPTION: true,
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path,
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label: render({ inputValue, path, prefixCls }),
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value: path.map((o) => o.value),
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disabled: path.some((o) => o.disabled),
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}
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})
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}
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return [{ label: notFoundContent, value: 'ANT_CASCADER_NOT_FOUND', disabled: true }]
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},
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focus () {
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this.$refs.input.focus()
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},
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blur () {
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this.$refs.input.blur()
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},
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},
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render () {
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const { $slots, sValue: value, sPopupVisible, inputValue } = this
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const props = getOptionProps(this)
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const {
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prefixCls, inputPrefixCls, placeholder, size, disabled,
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allowClear, showSearch = false, ...otherProps } = props
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const sizeCls = classNames({
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[`${inputPrefixCls}-lg`]: size === 'large',
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[`${inputPrefixCls}-sm`]: size === 'small',
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})
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const clearIcon = (allowClear && !disabled && value.length > 0) || inputValue ? (
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<Icon
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type='cross-circle'
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class={`${prefixCls}-picker-clear`}
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onClick={this.clearSelection}
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key='clear-icon'
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/>
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) : null
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const arrowCls = classNames({
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[`${prefixCls}-picker-arrow`]: true,
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[`${prefixCls}-picker-arrow-expand`]: sPopupVisible,
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})
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const pickerCls = classNames(
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`${prefixCls}-picker`, {
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[`${prefixCls}-picker-with-value`]: inputValue,
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[`${prefixCls}-picker-disabled`]: disabled,
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[`${prefixCls}-picker-${size}`]: !!size,
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})
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// Fix bug of https://github.com/facebook/react/pull/5004
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// and https://fb.me/react-unknown-prop
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const tempInputProps = omit(otherProps, [
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'options',
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'popupPlacement',
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'transitionName',
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'displayRender',
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'changeOnSelect',
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'expandTrigger',
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'popupVisible',
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'getPopupContainer',
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'loadData',
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'popupClassName',
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'filterOption',
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'renderFilteredOption',
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'sortFilteredOption',
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'notFoundContent',
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'defaultValue',
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])
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let options = this.options
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if (inputValue) {
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options = this.generateFilteredOptions(prefixCls)
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}
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// Dropdown menu should keep previous status until it is fully closed.
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if (!sPopupVisible) {
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options = this.cachedOptions
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} else {
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this.cachedOptions = options
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}
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const dropdownMenuColumnStyle = {}
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const isNotFound = (options || []).length === 1 && options[0].value === 'ANT_CASCADER_NOT_FOUND'
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if (isNotFound) {
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dropdownMenuColumnStyle.height = 'auto' // Height of one row.
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}
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// The default value of `matchInputWidth` is `true`
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const resultListMatchInputWidth = showSearch.matchInputWidth !== false
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if (resultListMatchInputWidth && inputValue && this.input) {
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dropdownMenuColumnStyle.width = this.input.input.offsetWidth
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}
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const inputProps = {
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props: {
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...tempInputProps,
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prefixCls: inputPrefixCls,
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placeholder: value && value.length > 0 ? undefined : placeholder,
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value: inputValue,
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disabled: disabled,
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readOnly: !showSearch,
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autoComplete: 'off',
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},
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class: `${prefixCls}-input ${sizeCls}`,
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ref: 'input',
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on: {
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click: showSearch ? this.handleInputClick : noop,
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blur: showSearch ? this.handleInputBlur : noop,
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keydown: this.handleKeyDown,
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change: showSearch ? this.handleInputChange : noop,
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},
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}
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const children = filterEmpty($slots.default)
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const input = children.length ? children : (
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<span
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class={pickerCls}
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>
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{ showSearch ? <span class={`${prefixCls}-picker-label`}>
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{this.getLabel()}
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</span> : null}
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<Input {...inputProps}/>
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{ !showSearch ? <span class={`${prefixCls}-picker-label`}>
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{this.getLabel()}
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</span> : null}
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{clearIcon}
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<Icon type='down' key='down-icon' class={arrowCls} />
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</span>
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)
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const cascaderProps = {
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props: {
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...props,
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options: options,
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value: value,
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popupVisible: sPopupVisible,
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dropdownMenuColumnStyle: dropdownMenuColumnStyle,
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},
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on: {
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popupVisibleChange: this.handlePopupVisibleChange,
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change: this.handleChange,
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},
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}
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return (
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<VcCascader {...cascaderProps}>
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{input}
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</VcCascader>
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)
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},
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}
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</script>
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