<template>
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<!-- #ifdef H5 -->
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<th :rowspan="rowspan" :colspan="colspan" class="uni-table-th" :class="{ 'table--border': border }" :style="{ width: customWidth + 'px', 'text-align': align }">
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<view class="uni-table-th-row">
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<view class="uni-table-th-content" :style="{ 'justify-content': contentAlign }" @click="sort">
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<slot></slot>
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<view v-if="sortable" class="arrow-box">
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<text class="arrow up" :class="{ active: ascending }" @click.stop="ascendingFn"></text>
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<text class="arrow down" :class="{ active: descending }" @click.stop="descendingFn"></text>
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</view>
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</view>
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<dropdown v-if="filterType || filterData.length" :filterData="filterData" :filterType="filterType" @change="ondropdown"></dropdown>
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</view>
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</th>
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<!-- #endif -->
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<!-- #ifndef H5 -->
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<view class="uni-table-th" :class="{ 'table--border': border }" :style="{ width: customWidth + 'px', 'text-align': align }"><slot></slot></view>
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<!-- #endif -->
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</template>
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<script>
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// #ifdef H5
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import dropdown from './filter-dropdown.vue'
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// #endif
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/**
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* Th 表头
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* @description 表格内的表头单元格组件
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* @tutorial https://ext.dcloud.net.cn/plugin?id=3270
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* @property {Number | String} width 单元格宽度（支持纯数字、携带单位px或rpx）
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* @property {Boolean} sortable 是否启用排序
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* @property {Number} align = [left|center|right] 单元格对齐方式
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* @value left 单元格文字左侧对齐
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* @value center 单元格文字居中
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* @value right 单元格文字右侧对齐
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* @property {Array} filterData 筛选数据
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* @property {String} filterType [search|select] 筛选类型
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* @value search 关键字搜素
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* @value select 条件选择
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* @event {Function} sort-change 排序触发事件
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*/
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export default {
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name: 'uniTh',
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options: {
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virtualHost: true
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},
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components: {
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// #ifdef H5
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dropdown
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// #endif
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},
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emits:['sort-change','filter-change'],
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props: {
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width: {
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type: [String, Number],
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default: ''
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},
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align: {
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type: String,
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default: 'left'
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},
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rowspan: {
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type: [Number, String],
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default: 1
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},
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colspan: {
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type: [Number, String],
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default: 1
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},
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sortable: {
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type: Boolean,
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default: false
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},
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filterType: {
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type: String,
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default: ""
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},
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filterData: {
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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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},
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data() {
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return {
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border: false,
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ascending: false,
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descending: false
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}
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},
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computed: {
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// 根据props中的width属性 自动匹配当前th的宽度(px)
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customWidth(){
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if(typeof this.width === 'number'){
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return this.width
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} else if(typeof this.width === 'string') {
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let regexHaveUnitPx = new RegExp(/^[1-9][0-9]*px$/g)
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let regexHaveUnitRpx = new RegExp(/^[1-9][0-9]*rpx$/g)
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let regexHaveNotUnit = new RegExp(/^[1-9][0-9]*$/g)
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if (this.width.match(regexHaveUnitPx) !== null) { // 携带了 px
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return this.width.replace('px', '')
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} else if (this.width.match(regexHaveUnitRpx) !== null) { // 携带了 rpx
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let numberRpx = Number(this.width.replace('rpx', ''))
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let widthCoe = uni.getSystemInfoSync().screenWidth / 750
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return Math.round(numberRpx * widthCoe)
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} else if (this.width.match(regexHaveNotUnit) !== null) { // 未携带 rpx或px 的纯数字 String
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return this.width
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} else { // 不符合格式
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return ''
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}
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} else {
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return ''
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}
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},
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contentAlign() {
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let align = 'left'
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switch (this.align) {
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case 'left':
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align = 'flex-start'
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break
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case 'center':
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align = 'center'
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break
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case 'right':
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align = 'flex-end'
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break
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}
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return align
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}
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},
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created() {
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this.root = this.getTable('uniTable')
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this.rootTr = this.getTable('uniTr')
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this.rootTr.minWidthUpdate(this.customWidth ? this.customWidth : 140)
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this.border = this.root.border
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this.root.thChildren.push(this)
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},
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methods: {
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sort() {
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if (!this.sortable) return
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this.clearOther()
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if (!this.ascending && !this.descending) {
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this.ascending = true
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this.$emit('sort-change', { order: 'ascending' })
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return
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}
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if (this.ascending && !this.descending) {
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this.ascending = false
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this.descending = true
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this.$emit('sort-change', { order: 'descending' })
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return
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}
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if (!this.ascending && this.descending) {
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this.ascending = false
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this.descending = false
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this.$emit('sort-change', { order: null })
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}
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},
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ascendingFn() {
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this.clearOther()
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this.ascending = !this.ascending
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this.descending = false
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this.$emit('sort-change', { order: this.ascending ? 'ascending' : null })
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},
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descendingFn() {
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this.clearOther()
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this.descending = !this.descending
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this.ascending = false
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this.$emit('sort-change', { order: this.descending ? 'descending' : null })
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},
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clearOther() {
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this.root.thChildren.map(item => {
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if (item !== this) {
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item.ascending = false
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item.descending = false
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}
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return item
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})
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},
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ondropdown(e) {
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this.$emit("filter-change", e)
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},
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/**
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* 获取父元素实例
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*/
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getTable(name) {
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let parent = this.$parent
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let parentName = parent.$options.name
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while (parentName !== name) {
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parent = parent.$parent
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if (!parent) return false
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parentName = parent.$options.name
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}
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return parent
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}
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}
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}
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</script>
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<style lang="scss">
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$border-color: #ebeef5;
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.uni-table-th {
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padding: 12px 10px;
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/* #ifndef APP-NVUE */
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display: table-cell;
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box-sizing: border-box;
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/* #endif */
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font-size: 14px;
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font-weight: bold;
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color: #909399;
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border-bottom: 1px $border-color solid;
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}
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.uni-table-th-row {
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/* #ifndef APP-NVUE */
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display: flex;
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/* #endif */
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flex-direction: row;
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}
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.table--border {
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border-right: 1px $border-color solid;
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}
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.uni-table-th-content {
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display: flex;
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align-items: center;
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flex: 1;
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}
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.arrow-box {
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}
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.arrow {
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display: block;
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position: relative;
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width: 10px;
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height: 8px;
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// border: 1px red solid;
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left: 5px;
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overflow: hidden;
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cursor: pointer;
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}
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.down {
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top: 3px;
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::after {
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content: '';
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width: 8px;
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height: 8px;
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position: absolute;
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left: 2px;
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top: -5px;
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transform: rotate(45deg);
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background-color: #ccc;
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}
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&.active {
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::after {
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background-color: #007aff;
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}
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}
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}
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.up {
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::after {
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content: '';
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width: 8px;
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height: 8px;
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position: absolute;
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left: 2px;
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top: 5px;
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transform: rotate(45deg);
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background-color: #ccc;
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}
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&.active {
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::after {
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background-color: #007aff;
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}
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}
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}
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</style>
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