element表格实现树形全选_vue+element UI实现树形表格带复选框的示例代码
一：在component文件夾下新建如下treeTable文件夾，里面有2個文件：
eval.js:將數據轉換成樹形數據
/**
* @Author: jianglei
* @Date: 2017-10-12 12:06:49
*/
"use strict";
import Vue from "vue";
export default function treeToArray(
data,
expandAll,
parent = null,
level = null
) {
let tmp = [];
Array.from(data).forEach(function(record) {
if (record._expanded === undefined) {
Vue.set(record, "_expanded", expandAll);
}
let _level = 1;
if (level !== undefined && level !== null) {
_level = level + 1;
}
Vue.set(record, "_level", _level);
// 如果有父元素
if (parent) {
Vue.set(record, "parent", parent);
}
tmp.push(record);
if (record.child && record.child.length > 0) {
const child = treeToArray(record.child, expandAll, record, _level);
tmp = tmp.concat(child);
}
});
return tmp;
}
index.vue:樹形表格組件
{{ scope.$index }}
{{ scope.row[column.value] }}
/**
Auth: Lei.j1ang
Created: 2018/1/19-13:59
*/
import treeToArray from "./eval";
export default {
name: "TreeTable",
data() {
return {
chooseson: true, //全選
key: true //單個點擊直到全部選中
};
},
props: {
/* eslint-disable */
data: {
type: [Array, Object],
required: true
},
columns: {
type: Array,
default: () => []
},
evalFunc: Function,
evalArgs: Array,
expandAll: {
type: Boolean,
default: false
}
},
computed: {
// 格式化數據源
formatData: function() {
let tmp;
if (!Array.isArray(this.data)) {
tmp = [this.data];
} else {
tmp = this.data;
}
const func = this.evalFunc || treeToArray;
const args = this.evalArgs
? [tmp, this.expandAll].concat(this.evalArgs)
: [tmp, this.expandAll];
return func.apply(null, args);
}
},
methods: {
showRow: function(row) {
const show = row.row.parent
? row.row.parent._expanded && row.row.parent._show
: true;
row.row._show = show;
return show
? "animation:treeTableShow 1s;-webkit-animation:treeTableShow 1s;"
: "display:none;";
},
// 切換下級是否展開
toggleExpanded: function(trIndex) {
const record = this.formatData[trIndex];
record._expanded = !record._expanded;
},
// 圖標顯示
iconShow(index, record) {
return index === 0 && record.child && record.child.length > 0;
},
//設置表頭全選
renderHeader(h, data) {
return h("span", [
h("input", {
attrs: {
id: "chooseall",
type: "checkbox",
style:
"border: 1px solid #dcdfe6;border-radius: 2px;box-sizing: border-box;width: 14px;height: 14px;background-color: #fff;"
}
})
]);
},
//功能函數:選中部分子集
setchildtobeselect(arr, key) {
arr.forEach((v, i) => {
v.checks = key;
// v._expanded = key;//選中后展開子項
if (v.child) {
this.setchildtobeselect(v.child, v.checks);
}
});
},
//是否所有的都被選中
isallchecked(arr) {
arr.forEach((v, i) => {
if (!v.checks) {
this.key = false;
}
if (v.child) {
this.isallchecked(v.child);
}
});
},
//設置父級為 未選中狀態(父級的父級沒改變-有bug)
setparentfalse(arr, id, level) {
arr.forEach((v, i) => {
if (v._level == level - 1 && v.child) {
v.child.forEach((val, ind) => {
if (val.id == id) {
v.checks = false;
return false; //終止此次循環，減少循環次數
}
});
}
if (v.child) {
this.setparentfalse(v.child, id, level);
}
});
},
//設置父級為 選中狀態
setparenttrue(arr, id, level) {
arr.forEach((v, i) => {
if (v._level == level - 1 && v.child) {
let key = true;
let sameidkey = false;
v.child.forEach((val, ind) => {
if (val.id == id) {
//確保當前點擊的在該父級內
sameidkey = true;
}
if (!val.checks) {
key = false;
}
});
if (key && sameidkey) {
v.checks = true;
}
}
if (v.child) {
this.setparentfalse(v.child, id, level);
}
});
},
//某個復選框被點擊時
toselect(row) {
console.log(row);
// row._expanded = row.checks;//選中后是否展開
//1、若有子集先讓子選中
if (row.child) {
this.setchildtobeselect(row.child, row.checks);
}
//2、然后判斷是否全選中
this.key = true; //重置為true，防止上次已經是false的狀態
this.isallchecked(this.formatData);
//3、設置多選框的狀態
if (!row.checks) {
this.setparentfalse(this.formatData, row.id, row._level); //設置父級選中的狀態為false
document.getElementById("chooseall").checked = false; //設置全選框的狀態
} else {
this.setparenttrue(this.formatData, row.id, row._level); //設置父級選中的狀態為true
}
if (this.key) {
document.getElementById("chooseall").checked = true; //設置全選框的狀態
}
}
},
mounted() {
this.$nextTick(() => {
var that = this;
const all = document.getElementById("chooseall");
all.onchange = function(e) {
console.log(all.checked);
if (all.checked == true) {
that.setchildtobeselect(that.formatData, true);
} else {
that.setchildtobeselect(that.formatData, false);
}
};
});
}
};
@keyframes treeTableShow {
from {
opacity: 0;
}
to {
opacity: 1;
}
}
@-webkit-keyframes treeTableShow {
from {
opacity: 0;
}
to {
opacity: 1;
}
}
.ms-tree-space {
position: relative;
top: 1px;
display: inline-block;
font-style: normal;
font-weight: 400;
line-height: 1;
width: 18px;
height: 14px;
}
.ms-tree-space::before {
content: "";
}
.processContainer {
width: 100%;
height: 100%;
}
table td {
line-height: 26px;
}
.tree-ctrl {
position: relative;
cursor: pointer;
color: #2196f3;
margin-left: -18px;
}
二：在需要的地方引入該組件：
例如：在component文件夾下新建a.vue:
import treeTable from "./TreeTable";
components: { treeTable },
data() {
return {
columns: [
{
text: "事件",
value: "event",
width: 200
},
{
text: "ID",
value: "id"
}
],
data: [
{
id: 0,
event: "事件1",
timeLine: 50,
comment: "無"
},
{
id: 1,
event: "事件1",
timeLine: 100,
comment: "無",
children: [
{
id: 2,
event: "事件2",
timeLine: 10,
comment: "無"
},
{
id: 3,
event: "事件3",
timeLine: 90,
comment: "無",
children: [
{
id: 4,
event: "事件4",
timeLine: 5,
comment: "無"
},
{
id: 5,
event: "事件5",
timeLine: 10,
comment: "無"
},
{
id: 6,
event: "事件6",
timeLine: 75,
comment: "無",
children: [
{
id: 7,
event: "事件7",
timeLine: 50,
comment: "無",
children: [
{
id: 71,
event: "事件71",
timeLine: 25,
comment: "xx"
},
{
id: 72,
event: "事件72",
timeLine: 5,
comment: "xx"
},
{
id: 73,
event: "事件73",
timeLine: 20,
comment: "xx"
}
]
},
{
id: 8,
event: "事件8",
timeLine: 25,
comment: "無"
}
]
}
]
}
]
}
]
};
},
最終效果：
這樣就大工告成了，想要了解更多，可以關注?vue-element-admin，一個很不錯的后臺管理模版
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本文標題: vue+element UI實現樹形表格帶復選框的示例代碼
本文地址: http://www.cppcns.com/wangluo/javascript/257270.html
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