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844 lines
32 KiB
844 lines
32 KiB
<template>
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<div
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v-clickoutside="handleClose"
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class="el-select"
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:class="[selectSize ? 'el-select--' + selectSize : '']"
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@click.stop="toggleMenu"
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>
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<div
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v-if="multiple"
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ref="tags"
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class="el-select__tags"
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:style="{ 'max-width': inputWidth - 32 + 'px', width: '100%' }"
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>
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<transition-group @after-leave="resetInputHeight">
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<el-tag
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v-for="item in selected"
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:key="getValueKey(item)"
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:closable="!selectDisabled"
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:size="collapseTagSize"
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:hit="item.hitState"
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type="info"
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@close="deleteTag($event, item)"
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disable-transitions
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>
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<span class="el-select__tags-text">{{ item.currentLabel }}</span>
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</el-tag>
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</transition-group>
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<input
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type="text"
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class="el-select__input"
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:class="[selectSize ? `is-${ selectSize }` : '']"
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:disabled="selectDisabled"
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:autocomplete="autocomplete"
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@focus="handleFocus"
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@blur="softFocus = false"
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@keyup="managePlaceholder"
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@keydown="resetInputState"
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@keydown.down.prevent="navigateOptions('next')"
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@keydown.up.prevent="navigateOptions('prev')"
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@keydown.enter.prevent="selectOption"
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@keydown.esc.stop.prevent="visible = false"
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@keydown.delete="deletePrevTag"
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@keydown.tab="visible = false"
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@compositionstart="handleComposition"
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@compositionupdate="handleComposition"
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@compositionend="handleComposition"
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v-model="query"
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@input="debouncedQueryChange"
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v-if="filterable"
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:style="{ 'flex-grow': '1', width: inputLength / (inputWidth - 32) + '%', 'max-width': inputWidth - 42 + 'px' }"
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ref="input">
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</div>
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<el-input
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ref="reference"
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v-model="selectedLabel"
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type="text"
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:placeholder="currentPlaceholder"
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:name="name"
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:id="id"
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:autocomplete="autocomplete"
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:size="selectSize"
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:disabled="selectDisabled"
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:readonly="readonly"
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:validate-event="false"
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:class="{ 'is-focus': visible }"
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:tabindex="(multiple && filterable) ? '-1' : null"
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@focus="handleFocus"
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@blur="handleBlur"
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@keyup.native="debouncedOnInputChange"
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@keydown.native.down.stop.prevent="navigateOptions('next')"
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@keydown.native.up.stop.prevent="navigateOptions('prev')"
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@keydown.native.enter.prevent="selectOption"
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@keydown.native.esc.stop.prevent="visible = false"
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@keydown.native.tab="visible = false"
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@paste.native="debouncedOnInputChange"
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@mouseenter.native="inputHovering = true"
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@mouseleave.native="inputHovering = false">
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<template slot="prefix" v-if="$slots.prefix">
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<slot name="prefix"/>
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</template>
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<template slot="suffix">
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<i v-show="!showClose" :class="['el-select__caret', 'el-input__icon', 'el-icon-' + iconClass]"/>
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<i v-if="showClose" class="el-select__caret el-input__icon el-icon-circle-close"
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@click="handleClearClick"/>
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</template>
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</el-input>
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<transition :name="transition" @before-enter="handleMenuEnter" @after-leave="doDestroy">
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<el-select-menu
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v-show="visible && emptyText !== false"
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placement="bottom"
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:append-to-body="popperAppendToBody"
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>
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<el-scrollbar
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ref="scrollbar"
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v-show="options.length > 0 && !loading"
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:class="{ 'is-empty': !allowCreate && query && filteredOptionsCount === 0 }"
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tag="ul"
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wrap-class="el-select-dropdown__wrap"
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view-class="el-select-dropdown__list"
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>
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<el-option v-if="showNewOption" :value="query" created/>
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<slot/>
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</el-scrollbar>
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<template v-if="emptyText && (!allowCreate || loading || (allowCreate && options.length === 0 ))">
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<slot name="empty" v-if="$slots.empty"/>
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<p class="el-select-dropdown__empty" v-else>{{ emptyText }}</p>
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</template>
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</el-select-menu>
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</transition>
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</div>
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</template>
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<script>
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import Emitter from 'element-ui/lib/mixins/emitter'
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import Focus from 'element-ui/lib/mixins/focus'
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import Locale from 'element-ui/lib/mixins/locale'
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import ElSelectMenu from './SelectDropdown.vue'
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import {debounce} from '@/utils'
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import Clickoutside from 'element-ui/lib/utils/clickoutside'
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import {addResizeListener, removeResizeListener} from 'element-ui/lib/utils/resize-event'
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import {t} from 'element-ui/lib/locale'
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import scrollIntoView from 'element-ui/lib/utils/scroll-into-view'
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import {getValueByPath, isEdge, isIE, valueEquals} from 'element-ui/lib/utils/util'
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import NavigationMixin from 'element-ui/packages/select/src/navigation-mixin'
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import {isKorean} from 'element-ui/lib/utils/shared'
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export default {
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mixins: [Emitter, Locale, Focus('reference'), NavigationMixin],
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name: 'ElSelect',
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componentName: 'ElSelect',
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inject: {
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elForm: {
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default: ''
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},
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elFormItem: {
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default: ''
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}
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},
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provide() {
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return {
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'select': this
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}
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},
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components: {ElSelectMenu},
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directives: {Clickoutside},
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props: {
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name: String,
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id: String,
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value: {required: true},
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transition: {type: String, default: 'el-zoom-in-top'},
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autocomplete: {type: String, default: 'off'},
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automaticDropdown: Boolean,
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size: String,
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disabled: Boolean,
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clearable: Boolean,
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filterable: Boolean,
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allowCreate: Boolean,
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loading: Boolean,
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popperClass: String,
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remote: Boolean,
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loadingText: String,
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noMatchText: String,
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noDataText: String,
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remoteMethod: Function,
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filterMethod: Function,
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multiple: Boolean,
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multipleLimit: {type: Number, default: 0},
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placeholder: {
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type: String,
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default() {
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return t('el.select.placeholder')
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}
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},
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defaultFirstOption: Boolean,
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reserveKeyword: Boolean,
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valueKey: {type: String, default: 'value'},
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popperAppendToBody: Boolean
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},
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data() {
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return {
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options: [],
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cachedOptions: [],
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createdLabel: null,
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createdSelected: false,
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selected: this.multiple ? [] : {},
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inputLength: 20,
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inputWidth: 0,
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initialInputHeight: 0,
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cachedPlaceHolder: '',
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optionsCount: 0,
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filteredOptionsCount: 0,
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visible: false,
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softFocus: false,
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selectedLabel: '',
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hoverIndex: -1,
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query: '',
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previousQuery: null,
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inputHovering: false,
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currentPlaceholder: '',
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menuVisibleOnFocus: false,
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isOnComposition: false,
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isSilentBlur: false
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}
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},
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computed: {
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_elFormItemSize() {
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return (this.elFormItem || {}).elFormItemSize
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},
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readonly() {
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return !this.filterable || this.multiple || (!isIE() && !isEdge() && !this.visible)
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},
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showClose() {
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let hasValue = this.multiple
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? Array.isArray(this.value) && this.value.length > 0
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: this.value !== undefined && this.value !== null && this.value !== ''
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return this.clearable &&
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!this.selectDisabled &&
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this.inputHovering &&
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hasValue
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},
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iconClass() {
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return this.remote && this.filterable ? '' : (this.visible ? 'arrow-up is-reverse' : 'arrow-up')
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},
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debounce() {
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return this.remote ? 300 : 0
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},
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emptyText() {
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if (this.loading) {
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return this.loadingText || this.t('el.select.loading')
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}
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else {
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if (this.remote && this.query === '' && this.options.length === 0) return false
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if (this.filterable && this.query && this.options.length > 0 && this.filteredOptionsCount === 0) {
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return this.noMatchText || this.t('el.select.noMatch')
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}
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if (this.options.length === 0) {
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return this.noDataText || this.t('el.select.noData')
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}
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}
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return null
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},
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showNewOption() {
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let hasExistingOption = this.options.filter(option => !option.created)
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.some(option => option.currentLabel === this.query)
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return this.filterable && this.allowCreate && this.query !== '' && !hasExistingOption
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},
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selectSize() {
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return this.size || this._elFormItemSize || (this.$ELEMENT || {}).size
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},
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selectDisabled() {
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return this.disabled || (this.elForm || {}).disabled
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},
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collapseTagSize() {
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return ['small', 'mini'].indexOf(this.selectSize) > -1
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? 'mini'
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: 'small'
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}
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},
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watch: {
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selectDisabled() {
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this.$nextTick(() => {
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this.resetInputHeight()
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})
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},
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placeholder(val) {
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this.cachedPlaceHolder = this.currentPlaceholder = val
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},
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value(val, oldVal) {
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if (this.multiple) {
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this.resetInputHeight()
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if ((val && val.length > 0) || (this.$refs.input && this.query !== '')) {
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this.currentPlaceholder = ''
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}
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else {
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this.currentPlaceholder = this.cachedPlaceHolder
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}
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if (this.filterable && !this.reserveKeyword) {
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this.query = ''
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this.handleQueryChange(this.query)
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}
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}
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this.setSelected()
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if (this.filterable && !this.multiple) {
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this.inputLength = 20
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}
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if (!valueEquals(val, oldVal)) {
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this.dispatch('ElFormItem', 'el.form.change', val)
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}
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},
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visible(val) {
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if (!val) {
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this.broadcast('ElSelectDropdown', 'destroyPopper')
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if (this.$refs.input) {
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this.$refs.input.blur()
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}
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this.query = ''
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this.previousQuery = null
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this.selectedLabel = ''
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this.inputLength = 20
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this.menuVisibleOnFocus = false
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this.resetHoverIndex()
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this.$nextTick(() => {
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if (this.$refs.input &&
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this.$refs.input.value === '' &&
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this.selected.length === 0) {
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this.currentPlaceholder = this.cachedPlaceHolder
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}
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})
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if (!this.multiple) {
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if (this.selected) {
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if (this.filterable && this.allowCreate &&
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this.createdSelected && this.createdLabel) {
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this.selectedLabel = this.createdLabel
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}
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else {
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this.selectedLabel = this.selected.currentLabel
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}
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if (this.filterable) this.query = this.selectedLabel
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}
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if (this.filterable) {
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this.currentPlaceholder = this.cachedPlaceHolder
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}
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}
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}
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else {
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this.broadcast('ElSelectDropdown', 'updatePopper')
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if (this.filterable) {
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this.query = this.remote ? '' : this.selectedLabel
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this.handleQueryChange(this.query)
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if (this.multiple) {
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this.$refs.input.focus()
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}
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else {
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if (!this.remote) {
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this.broadcast('ElOption', 'queryChange', '')
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this.broadcast('ElOptionGroup', 'queryChange')
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}
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if (this.selectedLabel) {
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this.currentPlaceholder = this.selectedLabel
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this.selectedLabel = ''
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}
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}
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}
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}
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this.$emit('visible-change', val)
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},
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options() {
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if (this.$isServer) return
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this.$nextTick(() => {
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this.broadcast('ElSelectDropdown', 'updatePopper')
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})
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if (this.multiple) {
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this.resetInputHeight()
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}
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let inputs = this.$el.querySelectorAll('input')
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if ([].indexOf.call(inputs, document.activeElement) === -1) {
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this.setSelected()
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}
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if (this.defaultFirstOption && (this.filterable || this.remote) && this.filteredOptionsCount) {
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this.checkDefaultFirstOption()
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}
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}
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},
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methods: {
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handleComposition(event) {
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const text = event.target.value
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if (event.type === 'compositionend') {
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this.isOnComposition = false
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this.$nextTick(_ => this.handleQueryChange(text))
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}
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else {
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const lastCharacter = text[text.length - 1] || ''
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this.isOnComposition = !isKorean(lastCharacter)
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}
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},
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handleQueryChange(val) {
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if (this.previousQuery === val || this.isOnComposition) return
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if (
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this.previousQuery === null &&
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(typeof this.filterMethod === 'function' || typeof this.remoteMethod === 'function')
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) {
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this.previousQuery = val
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return
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}
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this.previousQuery = val
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this.$nextTick(() => {
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if (this.visible) this.broadcast('ElSelectDropdown', 'updatePopper')
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})
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this.hoverIndex = -1
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if (this.multiple && this.filterable) {
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this.$nextTick(() => {
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this.inputLength = this.$refs.input.value.length * 15 + 20
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this.managePlaceholder()
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this.resetInputHeight()
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})
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}
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if (this.remote && typeof this.remoteMethod === 'function') {
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this.hoverIndex = -1
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this.remoteMethod(val)
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}
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else if (typeof this.filterMethod === 'function') {
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this.filterMethod(val)
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this.broadcast('ElOptionGroup', 'queryChange')
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}
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else {
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this.filteredOptionsCount = this.optionsCount
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this.broadcast('ElOption', 'queryChange', val)
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this.broadcast('ElOptionGroup', 'queryChange')
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}
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if (this.defaultFirstOption && (this.filterable || this.remote) && this.filteredOptionsCount) {
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this.checkDefaultFirstOption()
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}
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},
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|
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scrollToOption(option) {
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const target = Array.isArray(option) && option[0] ? option[0].$el : option.$el
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if (this.$refs.popper && target) {
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const menu = this.$refs.popper.$el.querySelector('.el-select-dropdown__wrap')
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scrollIntoView(menu, target)
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}
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this.$refs.scrollbar && this.$refs.scrollbar.handleScroll()
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},
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|
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|
handleMenuEnter() {
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this.$nextTick(() => this.scrollToOption(this.selected))
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},
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emitChange(val) {
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if (!valueEquals(this.value, val)) {
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this.$emit('change', val)
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}
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},
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getOption(value) {
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const type = v => Object.prototype.toString.call(v).toLowerCase()
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const isObject = type(value) === '[object object]'
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|
const isNull = type(value) === '[object null]'
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|
const isUndefined = type(value) === '[object undefined]'
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|
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for (let i = this.cachedOptions.length - 1; i >= 0; i--) {
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const cachedOption = this.cachedOptions[i]
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|
const isEqual = isObject
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? getValueByPath(cachedOption.value, this.valueKey) === getValueByPath(value, this.valueKey)
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: cachedOption.value === value
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|
if (isEqual) return cachedOption
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}
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|
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const label = (!isObject && !isNull && !isUndefined) ? value : ''
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const newOption = {
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value: value,
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|
currentLabel: label
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|
}
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|
if (this.multiple) {
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newOption.hitState = false
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|
}
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return newOption
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},
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|
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|
setSelected() {
|
|
if (!this.multiple) {
|
|
let option = this.getOption(this.value)
|
|
if (option.created) {
|
|
this.createdLabel = option.currentLabel
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|
this.createdSelected = true
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|
}
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|
else {
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|
this.createdSelected = false
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|
}
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|
this.selectedLabel = option.currentLabel
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|
this.selected = option
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|
if (this.filterable) this.query = this.selectedLabel
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|
return
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}
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|
let result = []
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|
if (Array.isArray(this.value)) {
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|
this.value.forEach(value => {
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|
result.push(this.getOption(value))
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|
})
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|
}
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|
this.selected = result
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this.$nextTick(() => this.resetInputHeight())
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},
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|
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|
handleFocus(event) {
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|
if (!this.softFocus) {
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|
if (this.automaticDropdown || this.filterable) {
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|
this.visible = true
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|
if (this.filterable) {
|
|
this.menuVisibleOnFocus = true
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|
}
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|
}
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|
this.$emit('focus', event)
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|
}
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else {
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|
this.softFocus = false
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|
}
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},
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|
|
|
blur() {
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this.visible = false
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this.$refs.reference.blur()
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},
|
|
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|
handleBlur(event) {
|
|
setTimeout(() => {
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|
if (this.isSilentBlur) {
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this.isSilentBlur = false
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|
}
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else {
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this.$emit('blur', event)
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}
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}, 50)
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this.softFocus = false
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},
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|
handleClearClick(event) {
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this.deleteSelected(event)
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},
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|
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|
doDestroy() {
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this.$refs.popper && this.$refs.popper.doDestroy()
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|
},
|
|
|
|
handleClose() {
|
|
this.visible = false
|
|
},
|
|
|
|
toggleLastOptionHitState(hit) {
|
|
if (!Array.isArray(this.selected)) return
|
|
const option = this.selected[this.selected.length - 1]
|
|
if (!option) return
|
|
|
|
if (hit === true || hit === false) {
|
|
option.hitState = hit
|
|
return hit
|
|
}
|
|
|
|
option.hitState = !option.hitState
|
|
return option.hitState
|
|
},
|
|
|
|
deletePrevTag(e) {
|
|
if (e.target.value.length <= 0 && !this.toggleLastOptionHitState()) {
|
|
const value = this.value.slice()
|
|
value.pop()
|
|
this.$emit('input', value)
|
|
this.emitChange(value)
|
|
}
|
|
},
|
|
|
|
managePlaceholder() {
|
|
if (this.currentPlaceholder !== '') {
|
|
this.currentPlaceholder = this.$refs.input.value ? '' : this.cachedPlaceHolder
|
|
}
|
|
},
|
|
|
|
resetInputState(e) {
|
|
if (e.keyCode !== 8) this.toggleLastOptionHitState(false)
|
|
this.inputLength = this.$refs.input.value.length * 15 + 20
|
|
this.resetInputHeight()
|
|
},
|
|
|
|
resetInputHeight() {
|
|
this.$nextTick(() => {
|
|
if (!this.$refs.reference) return
|
|
let inputChildNodes = this.$refs.reference.$el.childNodes
|
|
let input = [].filter.call(inputChildNodes, item => item.tagName === 'INPUT')[0]
|
|
const tags = this.$refs.tags
|
|
const sizeInMap = this.initialInputHeight || 40
|
|
input.style.height = this.selected.length === 0
|
|
? sizeInMap + 'px'
|
|
: Math.max(
|
|
tags ? (tags.clientHeight + (tags.clientHeight > sizeInMap ? 6 : 0)) : 0,
|
|
sizeInMap
|
|
) + 'px'
|
|
if (this.visible && this.emptyText !== false) {
|
|
this.broadcast('ElSelectDropdown', 'updatePopper')
|
|
}
|
|
})
|
|
},
|
|
|
|
resetHoverIndex() {
|
|
setTimeout(() => {
|
|
if (!this.multiple) {
|
|
this.hoverIndex = this.options.indexOf(this.selected)
|
|
}
|
|
else {
|
|
if (this.selected.length > 0) {
|
|
this.hoverIndex = Math.min.apply(null, this.selected.map(item => this.options.indexOf(item)))
|
|
}
|
|
else {
|
|
this.hoverIndex = -1
|
|
}
|
|
}
|
|
}, 300)
|
|
},
|
|
|
|
handleOptionSelect(option, byClick) {
|
|
if (this.multiple) {
|
|
const value = (this.value || []).slice()
|
|
const optionIndex = this.getValueIndex(value, option.value)
|
|
if (optionIndex > -1) {
|
|
value.splice(optionIndex, 1)
|
|
}
|
|
else if (this.multipleLimit <= 0 || value.length < this.multipleLimit) {
|
|
value.push(option.value)
|
|
}
|
|
this.$emit('input', value)
|
|
this.emitChange(value)
|
|
if (option.created) {
|
|
this.query = ''
|
|
this.handleQueryChange('')
|
|
this.inputLength = 20
|
|
}
|
|
if (this.filterable) this.$refs.input.focus()
|
|
}
|
|
else {
|
|
this.$emit('input', option.value)
|
|
this.emitChange(option.value)
|
|
this.visible = false
|
|
}
|
|
this.isSilentBlur = byClick
|
|
this.setSoftFocus()
|
|
if (this.visible) return
|
|
this.$nextTick(() => {
|
|
this.scrollToOption(option)
|
|
})
|
|
},
|
|
|
|
setSoftFocus() {
|
|
this.softFocus = true
|
|
const input = this.$refs.input || this.$refs.reference
|
|
if (input) {
|
|
input.focus()
|
|
}
|
|
},
|
|
|
|
getValueIndex(arr = [], value) {
|
|
const isObject = Object.prototype.toString.call(value).toLowerCase() === '[object object]'
|
|
if (!isObject) {
|
|
return arr.indexOf(value)
|
|
}
|
|
else {
|
|
const valueKey = this.valueKey
|
|
let index = -1
|
|
arr.some((item, i) => {
|
|
if (getValueByPath(item, valueKey) === getValueByPath(value, valueKey)) {
|
|
index = i
|
|
return true
|
|
}
|
|
return false
|
|
})
|
|
return index
|
|
}
|
|
},
|
|
|
|
toggleMenu() {
|
|
if (!this.selectDisabled) {
|
|
if (this.menuVisibleOnFocus) {
|
|
this.menuVisibleOnFocus = false
|
|
}
|
|
else {
|
|
this.visible = !this.visible
|
|
}
|
|
if (this.visible) {
|
|
(this.$refs.input || this.$refs.reference).focus()
|
|
}
|
|
}
|
|
},
|
|
|
|
selectOption() {
|
|
if (!this.visible) {
|
|
this.toggleMenu()
|
|
}
|
|
else {
|
|
if (this.options[this.hoverIndex]) {
|
|
this.handleOptionSelect(this.options[this.hoverIndex])
|
|
}
|
|
}
|
|
},
|
|
|
|
deleteSelected(event) {
|
|
event.stopPropagation()
|
|
const value = this.multiple ? [] : ''
|
|
this.$emit('input', value)
|
|
this.emitChange(value)
|
|
this.visible = false
|
|
this.$emit('clear')
|
|
},
|
|
|
|
deleteTag(event, tag) {
|
|
const index = this.selected.indexOf(tag)
|
|
if (index > -1 && !this.selectDisabled) {
|
|
const value = this.value.slice()
|
|
value.splice(index, 1)
|
|
this.$emit('input', value)
|
|
this.emitChange(value)
|
|
this.$emit('remove-tag', tag.value)
|
|
}
|
|
event.stopPropagation()
|
|
},
|
|
|
|
onInputChange() {
|
|
if (this.filterable && this.query !== this.selectedLabel) {
|
|
this.query = this.selectedLabel
|
|
this.handleQueryChange(this.query)
|
|
}
|
|
},
|
|
|
|
onOptionDestroy(index) {
|
|
if (index > -1) {
|
|
this.optionsCount--
|
|
this.filteredOptionsCount--
|
|
this.options.splice(index, 1)
|
|
}
|
|
},
|
|
|
|
resetInputWidth() {
|
|
this.inputWidth = this.$refs.reference.$el.getBoundingClientRect().width
|
|
},
|
|
|
|
handleResize() {
|
|
this.resetInputWidth()
|
|
if (this.multiple) this.resetInputHeight()
|
|
},
|
|
|
|
checkDefaultFirstOption() {
|
|
this.hoverIndex = -1
|
|
// highlight the created option
|
|
let hasCreated = false
|
|
for (let i = this.options.length - 1; i >= 0; i--) {
|
|
if (this.options[i].created) {
|
|
hasCreated = true
|
|
this.hoverIndex = i
|
|
break
|
|
}
|
|
}
|
|
if (hasCreated) return
|
|
for (let i = 0; i !== this.options.length; ++i) {
|
|
const option = this.options[i]
|
|
if (this.query) {
|
|
// highlight first options that passes the filter
|
|
if (!option.disabled && !option.groupDisabled && option.visible) {
|
|
this.hoverIndex = i
|
|
break
|
|
}
|
|
}
|
|
else {
|
|
// highlight currently selected option
|
|
if (option.itemSelected) {
|
|
this.hoverIndex = i
|
|
break
|
|
}
|
|
}
|
|
}
|
|
},
|
|
|
|
getValueKey(item) {
|
|
if (Object.prototype.toString.call(item.value).toLowerCase() !== '[object object]') {
|
|
return item.value
|
|
}
|
|
else {
|
|
return getValueByPath(item.value, this.valueKey)
|
|
}
|
|
}
|
|
},
|
|
|
|
created() {
|
|
this.cachedPlaceHolder = this.currentPlaceholder = this.placeholder
|
|
if (this.multiple && !Array.isArray(this.value)) {
|
|
this.$emit('input', [])
|
|
}
|
|
if (!this.multiple && Array.isArray(this.value)) {
|
|
this.$emit('input', '')
|
|
}
|
|
|
|
this.debouncedOnInputChange = debounce(this.onInputChange, this.debounce)
|
|
|
|
this.debouncedQueryChange = debounce(e => this.handleQueryChange(e.target.value), this.debounce)
|
|
|
|
this.$on('handleOptionClick', this.handleOptionSelect)
|
|
this.$on('setSelected', this.setSelected)
|
|
},
|
|
|
|
mounted() {
|
|
if (this.multiple && Array.isArray(this.value) && this.value.length > 0) {
|
|
this.currentPlaceholder = ''
|
|
}
|
|
addResizeListener(this.$el, this.handleResize)
|
|
|
|
const reference = this.$refs.reference
|
|
if (reference && reference.$el) {
|
|
const sizeMap = {
|
|
medium: 36,
|
|
small: 32,
|
|
mini: 28
|
|
}
|
|
const input = reference.$el.querySelector('input')
|
|
this.initialInputHeight = input.getBoundingClientRect().height || sizeMap[this.selectSize]
|
|
}
|
|
if (this.remote && this.multiple) {
|
|
this.resetInputHeight()
|
|
}
|
|
this.$nextTick(() => {
|
|
if (reference && reference.$el) {
|
|
this.inputWidth = reference.$el.getBoundingClientRect().width
|
|
}
|
|
})
|
|
this.setSelected()
|
|
},
|
|
|
|
beforeDestroy() {
|
|
if (this.$el && this.handleResize) removeResizeListener(this.$el, this.handleResize)
|
|
}
|
|
}
|
|
</script>
|
|
|