import T from 'ant-design-vue/es/table/Table'
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import get from 'lodash.get'
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export default {
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data () {
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return {
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needTotalList: [],
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selectedRows: [],
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selectedRowKeys: [],
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localLoading: false,
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localDataSource: [],
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localPagination: Object.assign({}, this.pagination),
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// 存储表格onchange时的filters， sorter对象
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filters: {},
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sorter: {}
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}
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},
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props: Object.assign({}, T.props, {
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rowKey: {
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type: [String, Function],
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default: 'key'
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},
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data: {
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type: Function,
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required: true
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},
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pageNum: {
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type: Number,
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default: 1
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},
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pageSize: {
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type: Number,
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default: 10
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},
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showSizeChanger: {
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type: Boolean,
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default: true
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},
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size: {
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type: String,
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default: 'default'
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},
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/**
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* alert: {
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* show: true,
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* clear: Function
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* }
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*/
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alert: {
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type: [Object, Boolean],
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default: null
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},
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rowSelection: {
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type: Object,
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default: null
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},
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/** @Deprecated */
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showAlertInfo: {
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type: Boolean,
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default: false
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},
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showPagination: {
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type: String | Boolean,
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default: 'auto'
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},
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/**
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* enable page URI mode
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*
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* e.g:
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* /users/1
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* /users/2
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* /users/3?queryParam=test
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* ...
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*/
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pageURI: {
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type: Boolean,
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default: false
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}
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}),
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watch: {
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'localPagination.current' (val) {
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this.pageURI && this.$router.push({
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...this.$route,
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name: this.$route.name,
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params: Object.assign({}, this.$route.params, {
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pageNo: val
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})
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})
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// change pagination, reset total data
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this.needTotalList = this.initTotalList(this.columns)
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this.selectedRowKeys = []
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this.selectedRows = []
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},
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pageNum (val) {
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Object.assign(this.localPagination, {
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current: val
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})
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},
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pageSize (val) {
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Object.assign(this.localPagination, {
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pageSize: val
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})
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},
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showSizeChanger (val) {
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Object.assign(this.localPagination, {
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showSizeChanger: val
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})
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}
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},
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created () {
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const { pageNo } = this.$route.params
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const localPageNum = this.pageURI && (pageNo && parseInt(pageNo)) || this.pageNum
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this.localPagination = ['auto', true].includes(this.showPagination) && Object.assign({}, this.localPagination, {
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current: localPageNum,
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pageSize: this.pageSize,
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showSizeChanger: this.showSizeChanger
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}) || false
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this.needTotalList = this.initTotalList(this.columns)
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this.loadData()
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},
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methods: {
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/**
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* 表格重新加载方法
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* 如果参数为 true, 则强制刷新到第一页
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* @param Boolean bool
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*/
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refresh (bool = false) {
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bool && (this.localPagination = Object.assign({}, {
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current: 1, pageSize: this.pageSize
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}))
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this.loadData()
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},
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/**
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* 加载数据方法
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* @param {Object} pagination 分页选项器
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* @param {Object} filters 过滤条件
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* @param {Object} sorter 排序条件
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*/
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loadData (pagination, filters = this.filters, sorter = this.sorter) {
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this.filters = filters
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this.sorter = sorter
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this.localLoading = true
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const parameter = Object.assign({
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pageNo: (pagination && pagination.current) ||
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this.showPagination && this.localPagination.current || this.pageNum,
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pageSize: (pagination && pagination.pageSize) ||
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this.showPagination && this.localPagination.pageSize || this.pageSize
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},
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(sorter && sorter.field && {
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sortField: sorter.field
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}) || {},
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(sorter && sorter.order && {
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sortOrder: sorter.order
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}) || {}, {
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...filters
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}
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)
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const result = this.data(parameter)
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// 对接自己的通用数据接口需要修改下方代码中的 r.pageNo, r.totalCount, r.data
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// eslint-disable-next-line
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if ((typeof result === 'object' || typeof result === 'function') && typeof result.then === 'function') {
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result.then(r => {
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this.localPagination = this.showPagination && Object.assign({}, this.localPagination, {
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current: r.pageNo, // 返回结果中的当前分页数
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total: r.totalCount, // 返回结果中的总记录数
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showSizeChanger: this.showSizeChanger,
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pageSize: (pagination && pagination.pageSize) ||
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this.localPagination.pageSize
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}) || false
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// 为防止删除数据后导致页面当前页面数据长度为 0 ,自动翻页到上一页
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if (r.data.length === 0 && this.showPagination && this.localPagination.current > 1) {
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this.localPagination.current--
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this.loadData()
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return
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}
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// 这里用于判断接口是否有返回 r.totalCount 且 this.showPagination = true 且 pageNo 和 pageSize 存在 且 totalCount 小于等于 pageNo * pageSize 的大小
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// 当情况满足时，表示数据不满足分页大小，关闭 table 分页功能
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try {
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if ((['auto', true].includes(this.showPagination) && r.totalCount <= (r.pageNo * this.localPagination.pageSize))) {
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this.localPagination.hideOnSinglePage = true
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}
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} catch (e) {
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this.localPagination = false
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}
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this.localDataSource = r.data // 返回结果中的数组数据
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})
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.finally(() => {
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this.localLoading = false
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})
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}
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},
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initTotalList (columns) {
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const totalList = []
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columns && columns instanceof Array && columns.forEach(column => {
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if (column.needTotal) {
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totalList.push({
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...column,
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total: 0
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})
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}
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})
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return totalList
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},
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/**
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* 用于更新已选中的列表数据 total 统计
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* @param selectedRowKeys
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* @param selectedRows
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*/
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updateSelect (selectedRowKeys, selectedRows) {
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this.selectedRows = selectedRows
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this.selectedRowKeys = selectedRowKeys
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const list = this.needTotalList
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this.needTotalList = list.map(item => {
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return {
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...item,
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total: selectedRows.reduce((sum, val) => {
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const total = sum + parseInt(get(val, item.dataIndex))
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return isNaN(total) ? 0 : total
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}, 0)
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}
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})
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},
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/**
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* 清空 table 已选中项
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*/
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clearSelected () {
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if (this.rowSelection) {
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this.rowSelection.onChange([], [])
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this.updateSelect([], [])
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}
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},
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/**
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* 处理交给 table 使用者去处理 clear 事件时，内部选中统计同时调用
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* @param callback
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* @returns {*}
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*/
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renderClear (callback) {
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if (this.selectedRowKeys.length <= 0) return null
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return (
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<a style="margin-left: 24px" onClick={() => {
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callback()
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this.clearSelected()
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}}>清空</a>
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)
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},
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renderAlert () {
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// 绘制统计列数据
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const needTotalItems = this.needTotalList.map((item) => {
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return (<span style="margin-right: 12px">
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{item.title}总计 <a style="font-weight: 600">{!item.customRender ? item.total : item.customRender(item.total)}</a>
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</span>)
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})
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// 绘制 清空 按钮
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const clearItem = (typeof this.alert.clear === 'boolean' && this.alert.clear) ? (
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this.renderClear(this.clearSelected)
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) : (this.alert !== null && typeof this.alert.clear === 'function') ? (
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this.renderClear(this.alert.clear)
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) : null
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// 绘制 alert 组件
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return (
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<a-alert showIcon={true} style="margin-bottom: 16px">
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<template slot="message">
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<span style="margin-right: 12px">已选择: <a style="font-weight: 600">{this.selectedRows.length}</a></span>
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{needTotalItems}
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{clearItem}
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</template>
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</a-alert>
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)
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}
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},
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render () {
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const props = {}
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const localKeys = Object.keys(this.$data)
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const showAlert = (typeof this.alert === 'object' && this.alert !== null && this.alert.show) && typeof this.rowSelection.selectedRowKeys !== 'undefined' || this.alert
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Object.keys(T.props).forEach(k => {
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const localKey = `local${k.substring(0, 1).toUpperCase()}${k.substring(1)}`
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if (localKeys.includes(localKey)) {
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props[k] = this[localKey]
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return props[k]
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}
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if (k === 'rowSelection') {
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if (showAlert && this.rowSelection) {
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// 如果需要使用alert，则重新绑定 rowSelection 事件
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props[k] = {
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...this.rowSelection,
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selectedRows: this.selectedRows,
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selectedRowKeys: this.selectedRowKeys,
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onChange: (selectedRowKeys, selectedRows) => {
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this.updateSelect(selectedRowKeys, selectedRows)
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typeof this[k].onChange !== 'undefined' && this[k].onChange(selectedRowKeys, selectedRows)
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}
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}
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return props[k]
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} else if (!this.rowSelection) {
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// 如果没打算开启 rowSelection 则清空默认的选择项
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props[k] = null
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return props[k]
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}
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}
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this[k] && (props[k] = this[k])
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return props[k]
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})
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const table = (
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<a-table {...{ props, scopedSlots: { ...this.$scopedSlots } }} onChange={this.loadData} onExpand={ (expanded, record) => { this.$emit('expand', expanded, record) } }>
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{ Object.keys(this.$slots).map(name => (<template slot={name}>{this.$slots[name]}</template>)) }
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</a-table>
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)
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return (
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<div class="table-wrapper">
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{ showAlert ? this.renderAlert() : null }
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{ table }
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</div>
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)
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}
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}
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