需求
实现一个复杂 el-table 具有以下功能：表格行展开、全部展开、收起、全部收起；可动态配置展示哪些列、调整列展示顺序；动态调整行顺序、行上移、行下移、行移动最顶部、行移动最底部
一、页面效果：
1.全部展开
二、代码实现（vue+Element-ui）
思路：本质上就是将表格看成一个数组，对表格的操作当成对数组的操作。
<template>
<div>
<div style="width=300px;float: left; margin-bottom: 10px;">
<el-button type="primary" @click="openAll">全部展开</el-button>
<el-button type="primary" @click="closeAll">全部收起</el-button>
<el-button type="primary" @click="dialogVisible = true">字段配置</el-button>
</div>
<div>
<el-table :data="tableData" style="width:100%" :row-key="getRowKey" border
:tree-props="{children: 'children'}" type="expand" ref="table"
:expand-row-keys="expandRowKeys"
stripe sortable="true">
<el-table-column :prop="col.prop" :label="col.label" v-for="(col,index) in activeFields" :key="index" icon="el-icon-search" ></el-table-column>
<el-table-column label="操作" fixed="right">
<template slot-scope="scope">
<el-dropdown @command="handleCommand">
<span>...</span>
<el-dropdown-menu>
<el-dropdown-item icon="el-icon-search" :command="beforeHandleCommand(scope.$index, scope.row,'search')" >查看</el-dropdown-item>
<el-dropdown-item icon="el-icon-edit-outline" :command="beforeHandleCommand(scope.$index, scope.row,'edit')">修改</el-dropdown-item>
<el-dropdown-item icon="el-icon-delete" :command="beforeHandleCommand(scope.$index, scope.row,'delete')">删除</el-dropdown-item>
<el-dropdown-item :command="beforeHandleCommand(scope.$index, scope.row,'moveTop')">移至顶部</el-dropdown-item>
<el-dropdown-item icon="el-icon-arrow-up" :command="beforeHandleCommand(scope.$index, scope.row,'moveUp')">上移</el-dropdown-item>
<el-dropdown-item icon="el-icon-arrow-down" :command="beforeHandleCommand(scope.$index, scope.row,'moveDown')">下移</el-dropdown-item>
<el-dropdown-item :command="beforeHandleCommand(scope.$index, scope.row,'moveBottom')">移至底部</el-dropdown-item>
</el-dropdown-menu>
</el-dropdown>
</template>
</el-table-column>
</el-table>
</div>
<el-dialog :visible.sync="dialogVisible" width="30%" center >
<span slot="title" >字段配置</span>
<el-tabs v-model="activeName">
<el-tab-pane label="字段选择" name="fieldsChosen">
<el-checkbox :indeterminate="isIndeterminate" v-model="checkAll" @change="handleCheckAllChange">全部</el-checkbox>
<div style="margin:15px 0;"></div>
<el-checkbox-group v-model="checkedColumns" @change="handleCheckedList">
<div>
<el-checkbox style="width:40%;" v-for="item in columns" :label="item" :key="item">{{item}}</el-checkbox>
</div>
</el-checkbox-group>
</el-tab-pane>
<el-tab-pane label="字段顺序" name="fieldSorted">
<vuedraggable v-model="fieldList">
<transition-group>
<div v-for="field in fieldList" :key="field" style="background-color:gainsboro;margin:10px; text-align: center;">
{{field}}
</div>
</transition-group>
</vuedraggable>
</el-tab-pane>
</el-tabs>
<span slot="footer" >
<el-button type="primary" plain @click="recoverChecked">恢复默认</el-button>
<el-button @click="dialogVisible = false" >取 消</el-button>
<el-button type="primary" @click="submit" >确 定</el-button>
</span>
</el-dialog>
</div>
</template>
<script>
import vuedraggable from 'vuedraggable';
const columnOptions=['编号', '计划开始日期','计划完成日期','实际开始日期','实际完成日期','参考提前期',
'计划提前期','实际提前期','前置任务','产出物', '负责人', '负责人部门', '经办人', '经办人部门',
'重要程度','状态', '逾期状态 ','承诺交期','预测交期','备注'];
export default {
name: 'Test',
components: {
vuedraggable
},
data () {
return {
expandRowKeys: [],
activeName:'fieldsChosen',
dialogVisible:false,
// 列信息
checkedColumns:['编号','计划开始日期','计划完成日期','实际开始日期','实际完成日期'],
checkAll:false,
columns:columnOptions,
isIndeterminate:true,
fieldsTemp:[],//存放按指定顺序排列的 fields 数组
fields:[
{label:"计划名称", prop:"planName", visible: true},
{label:"编号", prop:"id", visible: true },
{label:"计划开始日期", prop:"beginTimeP", visible: true },
{label:"计划完成日期", prop:"endTimeP", visible: true },
{label:"实际开始日期", prop:"beginTimeS", visible: true },
{label:"实际完成日期", prop:"endTimeS" , visible: true },
{label:"参考提前期", prop:"referTime", visible: false },
{label:"计划提前期", prop:"planTime", visible: false },
{label:"实际提前期", prop:"practicalTime", visible: false },
{label:"前置任务", prop:"frontTask", visible: false },
{label:"产出物", prop:"product", visible: false },
{label:"负责人", prop:"principal", visible: false },
{label:"负责人部门", prop:"principalDep", visible: false },
{label:"经办人", prop:"operator", visible: false },
{label:"经办人部门", prop:"operatorDep", visible: false },
{label:"重要程度", prop:"important", visible: false },
{label:"状态", prop:"status", visible: false },
{label:"逾期状态", prop:"delayStatus" , visible: false },
{label:"承诺交期", prop:"promiseTime" , visible: false },
{label:"预测交期", prop:"predictTime" , visible: false },
{label:"备注", prop:"remark", visible: false }
],
// fieldList:['编号', '计划开始日期','计划完成日期','实际开始日期','实际完成日期','参考提前期',
// '计划提前期','实际提前期','前置任务','产出物', '负责人', '负责人部门', '经办人', '经办人部门',
// '重要程度','状态', '逾期状态 ','承诺交期','预测交期','备注'],
fieldList:columnOptions,
tableData: [
{
id: "001",
planName: "ffff",
beginTimeP: "2022-02-03",
endTimeP: "2022-02-03",
beginTimeS: "2022-02-03",
endTimeS: "2022-02-03",
children: [
{ id: "00101", planName: "ffff",beginTimeP: "2022-02-03",endTimeP: "2022-02-03",beginTimeS: "2022-02-03",endTimeS: "2022-02-03"},
{ id: "00102", planName: "ffff",beginTimeP: "2022-02-03",endTimeP: "2022-02-03",beginTimeS: "2022-02-03",endTimeS: "2022-02-03"},
{ id: "00103", planName: "ffff",beginTimeP: "2022-02-03",endTimeP: "2022-02-03",beginTimeS: "2022-02-03",endTimeS: "2022-02-03"},
{ id: "00104", planName: "ffff",beginTimeP: "2022-02-03",endTimeP: "2022-02-03",beginTimeS: "2022-02-03",endTimeS: "2022-02-03"}
]
},
{
id: "002",
planName: "uuuu",
beginTimeP: "2022-02-03",
endTimeP: "2022-02-03",
beginTimeS: "2022-02-03",
endTimeS: "2022-02-03",
children: [
{ id: "00201", planName: "ffff",beginTimeP: "2022-02-03",endTimeP: "2022-02-03",beginTimeS: "2022-02-03",endTimeS: "2022-02-03"},
{ id: "00202", planName: "ffff",beginTimeP: "2022-02-03",endTimeP: "2022-02-03",beginTimeS: "2022-02-03",endTimeS: "2022-02-03"},
]
},
{
id: "003",
planName: "yyyy",
beginTimeP: "2022-02-03",
endTimeP: "2022-02-03",
beginTimeS: "2022-02-03",
endTimeS: "2022-02-03",
children: [
{ id: "00301", planName: "ffff",beginTimeP: "2022-02-03",endTimeP: "2022-02-03",beginTimeS: "2022-02-03",endTimeS: "2022-02-03"},
{ id: "00302", planName: "ffff",beginTimeP: "2022-02-03",endTimeP: "2022-02-03",beginTimeS: "2022-02-03",endTimeS: "2022-02-03"}
]
},
{
id: "004",
planName: "xxxx",
beginTimeP: "2022-02-03",
endTimeP: "2022-02-03",
beginTimeS: "2022-02-03",
endTimeS: "2022-02-03",
children: [
{ id: "00401", planName: "ffff",beginTimeP: "2022-02-03",endTimeP: "2022-02-03",beginTimeS: "2022-02-03",endTimeS: "2022-02-03"},
{ id: "00402", planName: "ffff",beginTimeP: "2022-02-03",endTimeP: "2022-02-03",beginTimeS: "2022-02-03",endTimeS: "2022-02-03"}
]
}
]
}
},
computed:{
activeFields: function(){
return this.fields.filter((item)=>{
return item.visible;
})
}
},
mounted(){
this.tableDataHandle(this.tableData, 'children')
},
methods:{
// 数据处理
tableDataHandle(arr, key, level = 0, indexLine = []) {
level = level + 1
arr.map((item, idx) => {
item.level = level
item.indexLine = Object.assign([], indexLine)
item.indexLine.push(idx)
item.parentLength = arr.length
if (item[key]) {
this.tableDataHandle(item[key], key, level, item.indexLine)
}
})
return arr
},
forTableData(arr,isExpand){
arr.forEach(i =>{
this.$refs.table.toggleRowExpansion(i,isExpand);
if(i.children){
this.forTableData(i.children,isExpand)
}})
},
// 全部关闭
closeAll() {
this.forTableData(this.tableData,false)
},
// 全部打开
openAll() {
this.forTableData(this.tableData,true)
},
getRowKey(v){
return v.id
},
beforeHandleCommand(index,row,command) {
return {
'index':index,
'row':row,
'command':command
}
},
handleCommand(command) {
switch(command.command) {
case "search":
this.search(command.index);
break;
case "edit":
this.edit(command.index);
break;
case "delete":
this.rowOperation(command.row.indexLine,"delete",command.row);
break;
case "moveTop":
this.rowOperation(command.row.indexLine,"moveTop",command.row);
break;
case "moveUp":
this.rowOperation(command.row.indexLine,"moveUp",command.row);
break;
case "moveDown":
this.rowOperation(command.row.indexLine,"moveDown",command.row);
break;
case "moveBottom":
this.rowOperation(command.row.indexLine,"moveBottom",command.row);
break;
}
},
handleCheckAllChange(val){
this.checkedColumns = val ? columnOptions : [];
this.isIndeterminate = false;
},
handleCheckedList(val){
this.checkedColumns=val;
let checkedCount = val.length;
this.checkAll = checkedCount === this.columns.length;
this.isIndeterminate = checkedCount > 0 && checkedCount < this.columns.length;
},
recoverChecked(){
this.checkedColumns=['编号','计划开始日期','计划完成日期','实际开始日期','实际完成日期'];
this.fieldList=columnOptions;
},
submit(){
this.dialogVisible=false;
//更新表格展示列
this.fields.forEach((item)=>{
item.visible=false;
})
this.checkedColumns.forEach((item)=>{
for(let i=0;i<this.fields.length;i++){
if(this.fields[i].label==item){
this.fields[i].visible=true;
}
}
})
//更新表格列顺序
//更改后列顺序 this.fieldList
this.fieldsTemp=[];//清空存放按指定顺序排列的 fields 数组
let n=0;
this.fieldList.forEach((item)=>{
for(let i=0;i<this.fields.length;i++){
if(this.fields[i].label==item){
this.fieldsTemp[n++]=this.fields[i];
}
}
})
this.fields=this.fieldsTemp;
},
edit(index,row){
},
rowOperation(target,flag,row) {
let temTable
if (target.length == 1) {
temTable = this.tableData
} else {
temTable = this.getParent(target).children
}
let index = target[target.length - 1]
if(flag === "moveTop"){ // 置顶
// 将元素 unshift 到数组第一位
temTable.splice(index, 1);
temTable.unshift(row)
this.tableDataHandle(this.tableData, 'children')
return
}
if(flag === "moveBottom"){
temTable.splice(index, 1);
temTable.push(row)
this.tableDataHandle(this.tableData, 'children')
return;
}
if (flag === "moveUp") { //上移
let upData = temTable[index - 1]
temTable.splice(index - 1, 1);
temTable.splice(index, 0, upData);
}
if(flag ==="moveDown")
{ //下移
let downData = temTable[index + 1]
temTable.splice(index + 1, 1);
temTable.splice(index, 0, downData);
}
if(flag =="delete")
{ //删除
temTable.splice(index,1);
}
this.tableDataHandle(this.tableData, 'children')
},
getParent(target) {
if(target.length==1){
return this.tableData;
}else if(target.length==2) {
return this.tableData[target[0]];
} else if(target.length>2) {
return this.getParent(target.length-1).children[target[target.length-2]];
}
}
}
}
</script>
<style scoped>
.title{
float: left;
}
.buttonLeft{
width:20%;
margin-right: 40%;
}
.buttonRight{
width:15%;
}
</style>