296 lines
7.5 KiB
Vue
296 lines
7.5 KiB
Vue
<template>
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<el-select
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v-if="show"
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ref="visualSelect"
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v-model="selectValue"
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:class="classId"
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popper-class="VisualSelects coustom-de-select"
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no-match-text=" "
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reserve-keyword
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clearable
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v-bind="$attrs"
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v-on="$listeners"
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@change="visualChange"
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@visible-change="popChange"
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>
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<p
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v-if="startIndex === 0 && $attrs.multiple"
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class="select-all"
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>
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<el-checkbox
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v-model="selectAll"
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v-customStyle="customStyle"
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:indeterminate="isIndeterminate"
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@change="selectAllChange"
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>{{ $t('dataset.check_all') }}
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</el-checkbox>
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</p>
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<el-option
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v-for="item in options"
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:key="item.id"
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:label="item.text"
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:value="item.id"
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:class="setSelect(item.id)"
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>
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<span :title="item.text">{{ item.text }}</span>
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</el-option>
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</el-select>
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</template>
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<script>
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import { handlerInputStyle } from '@/components/widget/deWidget/serviceNameFn.js'
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import { uuid } from 'vue-uuid'
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export default {
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name: 'ElVisualSelect',
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model: {
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prop: 'value', // 绑定的值，通过父组件传递
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event: 'update' // 自定义名
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},
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props: {
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classId: {
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type: String,
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require: true,
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default: uuid.v1()
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},
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customStyle: {
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type: Object,
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default: () => {
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}
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},
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list: {
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type: Array,
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default: () => {
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return []
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}
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},
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value: {
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type: [String, Number, Array],
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default: ''
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},
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keyWord: {
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type: String,
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default: ''
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}
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},
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data() {
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return {
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newList: [],
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selectValue: this.value,
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options: [],
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domList: null,
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selectBoxDom: null,
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scrollbar: null,
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startIndex: 0,
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endIndex: 0,
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maxLength: 9, // 弹出框最大支持9个条目
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itemHeight: 34, // select组件选项高度
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maxHeightDom: null,
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defaultFirst: false,
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show: true,
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selectAll: false
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}
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},
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computed: {
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isIndeterminate() {
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return Array.isArray(this.selectValue) && this.selectValue.length > 0 && this.isAllSelect() > 0 && this.selectValue.length !== this.halfSelect()
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}
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},
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watch: {
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value(val) {
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this.selectValue = val
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},
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selectValue(val) {
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this.$emit('update', val)
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if (!val) {
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this.resetList()
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this.maxHeightDom.style.height = this.newList.length * 34 + 'px'
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this.domList.style.paddingTop = 0 + 'px'
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}
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},
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list() {
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this.resetList()
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this.show = false
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this.$nextTick(() => {
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this.show = true
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this.$nextTick(() => {
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this.init()
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})
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})
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},
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keyWord(val, old) {
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if (val === old) return
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const results = val ? this.list.filter(item => item.text.includes(val)) : null
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this.resetList(results)
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this.reCacularHeight()
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this.$nextTick(() => {
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this.callback()
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})
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}
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},
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mounted() {
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this.resetList()
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this.$nextTick(() => {
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this.init()
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})
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},
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methods: {
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resetSelectAll() {
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this.selectAll = false
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},
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setSelect(id) {
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if (Array.isArray(this.selectValue)) {
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return this.selectValue.map(ele => ele.id).includes(id) && 'selected'
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}
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return this.selectValue === id && 'selected'
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},
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selectAllChange(val) {
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let vals = val ? [...this.list.map(ele => ele.id)] : []
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if (this.keyWord.trim() && val) {
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vals = this.list.filter(item => item.text.includes(this.keyWord.trim())).map(ele => ele.id)
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}
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this.visualChange(vals)
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this.selectValue = vals
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this.$emit('change', vals)
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this.$emit('handleShowNumber')
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},
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addScrollDiv(selectDom) {
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this.maxHeightDom = document.createElement('div')
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this.maxHeightDom.className = 'el-select-height'
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selectDom.insertBefore(this.maxHeightDom, this.domList)
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},
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reCacularHeight() {
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const h = this.$attrs.multiple ? 16 : 0
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this.maxHeightDom.style.height = this.newList.length * this.itemHeight + h + 'px'
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},
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resetList(arrays) {
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if (Array.isArray(arrays)) {
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this.newList = arrays.slice()
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this.domList.style.paddingTop = 0 + 'px'
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this.scrollbar.scrollTop = 0
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this.callback()
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} else {
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this.newList = this.list.slice()
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}
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this.options = this.newList.slice(0, this.maxLength)
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},
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customInputStyle() {
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if (!this.$parent.$parent.handlerInputStyle || !this.$refs.visualSelect) return
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handlerInputStyle(this.$refs.visualSelect.$el.querySelector('.el-input__inner'), this.$parent.element.style)
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handlerInputStyle(this.$refs.visualSelect.$el.querySelector('.el-select__input'), { wordColor: this.$parent.element.style.wordColor })
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},
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init() {
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if (this.defaultFirst && this.list.length > 0) {
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this.selectValue = this.list[0].value
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}
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if (!this.list || !this.list.length) {
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this.customInputStyle()
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return
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}
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const selectDom = document.querySelector(
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`.${this.classId} .el-select-dropdown .el-select-dropdown__wrap`
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)
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this.scrollbar = document.querySelector(`.${this.classId} .el-select-dropdown .el-scrollbar`)
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this.selectBoxDom = document.querySelector(`.${this.classId} .el-select-dropdown__wrap`)
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this.selectBoxDom.style.display = 'flex'
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this.selectBoxDom.style.flexDirection = 'row'
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this.domList = selectDom.querySelector(
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`.${this.classId} .el-select-dropdown__wrap .el-select-dropdown__list`
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)
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this.addScrollDiv(this.selectBoxDom)
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this.scrollFn()
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this.customInputStyle()
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},
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scrollFn() {
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this.scrollbar.addEventListener('scroll', this.callback, false)
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},
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callback() {
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if (!this.scrollbar) return
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const scrollTop = this.scrollbar.scrollTop
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this.startIndex = parseInt(scrollTop / this.itemHeight)
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this.endIndex = this.startIndex + this.maxLength
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this.options = this.newList.slice(this.startIndex, this.endIndex)
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this.domList.style.paddingTop = scrollTop - (scrollTop % this.itemHeight) + 'px'
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},
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popChange() {
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this.$emit('resetKeyWords', '')
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this.domList.style.paddingTop = 0 + 'px'
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this.startIndex = 0
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this.$nextTick(() => {
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if (this.$attrs.multiple) {
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this.selectAll = this.selectValue.length === this.list.length
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}
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})
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this.resetList()
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this.reCacularHeight()
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},
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isAllSelect() {
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let vals = this.list.length
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if (this.keyWord.trim()) {
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vals = this.list.filter(item => item.text.includes(this.keyWord.trim())).map(ele => ele.id).filter(ele => this.selectValue.includes(ele)).length
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}
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return vals
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},
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halfSelect() {
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let vals = this.list.length
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if (this.keyWord.trim()) {
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vals = this.list.filter(item => item.text.includes(this.keyWord.trim())).map(ele => ele.id).length
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}
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return vals
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},
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visualChange(val) {
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if (this.$attrs.multiple) {
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this.selectAll = val.length === this.halfSelect()
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}
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this.$emit('visual-change', val)
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}
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}
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}
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</script>
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<style lang="scss">
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.VisualSelects {
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.el-scrollbar {
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position: relative;
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height: 245px;
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overflow: inherit;
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overflow-x: hidden;
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content-visibility: auto;
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}
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::-webkit-scrollbar {
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background: #ffffff !important;
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}
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.el-select-height {
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width: 1px;
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position: absolute;
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top: 0;
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left: 0;
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}
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.el-select-dropdown__list {
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width: 100%;
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position: absolute;
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top: 0;
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left: 0;
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}
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.el-select-dropdown__wrap {
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height: 0;
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}
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}
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.select-all {
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padding: 10px 20px 0 20px;
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}
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</style>
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