<template><div><el-table:data="tableData":row-key="rowKey":default-expand-all="defaultExpandAll":tree-props="treeProps"><!-- 开启树形多选 --><el-table-column v-if="showSelection" width="120" align="left"><template #header><el-checkboxv-model="selectAll":checked="selectAll":indeterminate="isIndeterminate"@change="setCheckAll"/>{{ selectionName }}</template><template #default="scope"><el-checkboxv-model="scope.row[selectionConfig.checked]":checked="scope.row[selectionConfig.checked]":indeterminate="scope.row[selectionConfig.indeterminate]":disabled="scope.row[selectionConfig.disabled]"@change="setCheck(scope.row)"/></template></el-table-column><el-table-column prop="name" label="Name" width="180" /></el-table></div>
</template><script>
export default {props: {// 表格树形数据// 列配置项columnConfig: {type: Array,default: () => [{prop: 'default',label: '默认',width: '200',align: 'center',ownDefinedFn: () => {return '默认' // 可返回函数}}]},// 数据唯一标识rowKey: {type: String,default: 'id'},// 默认展开所有节点defaultExpandAll: {type: Boolean,default: true},// 渲染嵌套数据的配置选项treeProps: {type: Object,default: () => ({children: 'children'})},// 默认开启树形多选框showSelection: {type: Boolean,default: true},// 树形多选框标题selectionName: {type: String,default: ''},// 多选框配置selectionConfig: {type: Object,default: () => ({checked: 'checked',indeterminate: 'indeterminate',disabled: 'disabled'})}},data() {return {selectAll: false, // 全选isIndeterminate: false, // 半选tableData: [{id: '1',name: '目录1',parentId: '0',checked: false,isItemIndeterminate: false,children: [{id: '1-1-1-1',name: '目录1-1-1-1',parentId: '1',checked: false,isItemIndeterminate: false,children: []},{id: '1-1-1-2',name: '目录1-1-1-2',parentId: '1',checked: false,isItemIndeterminate: false,children: []}]},{ id: '2', name: '目录2', parentId: '0', checked: false, children: [] },{ id: '3', name: '目录3', parentId: '0', checked: false, children: [] },{ id: '4', name: '目录4', parentId: '0', checked: false, children: [] }]}},methods: {// 全选setCheckAll() {console.log(this.selectAll)this.tableData.forEach((item) => {if (!item[this.selectionConfig.disabled]) {item[this.selectionConfig.checked] = this.selectAll}this.setChildren(item, this.selectAll)})this.isIndeterminate = false},// 单选setCheck(row) {// 设置该单元格所有子节点状态this.setChildren(row, row[this.selectionConfig.checked])let result = this.setParentCheck(row)// 遍历到顶级，顶级无父节点，判断顶级节点是否都为选中if (!result) {let isAll = this.tableData.every((item) => {return item[this.selectionConfig.checked]})this.selectAll = isAllif (isAll) {this.isIndeterminate = false} else {let isIndeterminate = this.tableData.some((item) => {return item[this.selectionConfig.checked] || item[this.selectionConfig.indeterminate]})this.isIndeterminate = isIndeterminate}}},// 设置子节点setChildren(row, checked) {row[this.selectionConfig.indeterminate] = falseif (row[this.treeProps.children]) {row[this.treeProps.children].forEach((item) => {if (!item[this.selectionConfig.disabled]) {item[this.selectionConfig.checked] = checkeditem[this.selectionConfig.indeterminate] = false}if (row[this.treeProps.children]) {this.setChildren(item, checked)}})}},// 设置父节点setParentCheck(row) {// 寻找该行数据的父节点let parent = nullfor (let i = 0; i < this.tableData.length; i++) {parent = this.findItem(this.tableData[i], row.parentId)if (parent != null) {break}}// 遍历该行的父节点下，所有的子节点if (parent != null) {if (parent[this.treeProps.children]) {// 子节点是否全都选中，如果是则则勾选该节点let isAll = parent[this.treeProps.children].every((item) => {return item[this.selectionConfig.checked]})parent[this.selectionConfig.checked] = isAllif (isAll) {parent[this.selectionConfig.indeterminate] = false} else {let isIndeterminate = parent[this.treeProps.children].some((item) => {return item[this.selectionConfig.checked]})parent[this.selectionConfig.indeterminate] = isIndeterminate}// 递归查找该行父级的父级节点this.setParentCheck(parent, parent[this.selectionConfig.checked])}} else {// 遍历到顶级，停止return null}},// 查递归找该行的父节点findItem(row, id) {if (row.id == id) {return row}if (row[this.treeProps.children]) {let parent = nullfor (let i = 0; i < row[this.treeProps.children].length; i++) {parent = this.findItem(row[this.treeProps.children][i], id)if (parent) {break}}return parent} else {return null}}}
}
</script><style lang="less" scoped></style>

参考链接

https://blog.csdn.net/weixin_47342392/article/details/139168459

人工智能学习网站

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