[TOC]html
Tree樹形控件在前端開發中必不可少,對於數據的展現如今網站大都採起樹形展現。由於大數據所有展現出來對於用戶來講是不友好的。今天咱們本身手寫一個Tree插件。前端
<template> <Tree :data="data2" show-checkbox></Tree> </template> <script> export default { data () { return { data2: [ { title: 'parent 1', expand: true, children: [ { title: 'parent 1-1', expand: true, children: [ { title: 'leaf 1-1-1' }, { title: 'leaf 1-1-2' } ] }, { title: 'parent 1-2', expand: true, children: [ { title: 'leaf 1-2-1' }, { title: 'leaf 1-2-1' } ] } ] } ] } } } </script>
一樣的咱們先來看看他的用法其實和iview同樣。用咱們封裝好的模板就好了。下面是作一個部門樹。部門下面掛着人員這個功能。vue
<zxhtree v-if="userChange" class="item" treekey="deptId" treename="deptName" treechildren="children" :model="deptData" :ids="sysUserRole.deptIds" :names="sysUserRole.deptNames" @keyname="selectedUserObj" > </zxhtree>
js就是去填補上述的數據,好比deptData、sysUserRole這些。至於這些屬性表明什麼意思咱們先不着急看。先上個效果圖。node
那麼咱們的zxhtree控件是在哪裏註冊的呢,這裏被咱們抽離在component.js裏。Vue.component('zxhtree', {});
繼續在zxhtree裏看除綁定的節點是template: '#tree-template'
。 tree-template的模板是在component.html中寫好的程序員
<script type="text/x-template" id="tree-template"> <div> <tree-item class="item" :treekey="treekey" v-for="(model, index) in model" :treename="treename" :treechildren="treechildren" :model="model" :ids="ids" :names="names" @keyname="selectedObj" @data="synchdata" > </tree-item> </div> </script>
而在tree-template用到的tree-item控件纔是真正的tree控件。這裏是爲了將樹形包裹起來,因此才包裹了一層模板。 tree-item對應的模板代碼是後端
<script type="text/x-template" id="item-template"> <ul class="ztree"> <li class="level0" @blur="blur" @focus="focus" tabindex="0" hidefocus="true" treenode=""> <input type="checkbox" :disabled="model.disabled" :ref="model[treename]" :checked="checkStatus" @click="selectedObj"/> <span title="" @click="toggle" :class="openStatus" treenode_switch=""></span> <a :class="selectClass" treenode_a="" onclick="" target="_blank" style="" :title="model[treename]"> <span title="" treenode_ico="" class="button ico_open" style=""></span> <span @dblclick="toggle" class="node_name">{{model[treename]}}</span> </a> <tree-item class="item" v-show="open" v-for="(model, index) in model[treechildren]" :key="index" :model="model" :treekey="treekey" :treename="treename" :vistreekey="vistreekey" :vistreename="vistreename" :treechildren="treechildren" ref="child" @keyname="keyname" > </tree-item> </li> </ul> </script>
能夠很明顯的看到這裏咱們使用了遞歸進行展現樹形結構。由於樹形結構你沒法肯定層級。因此在裏面又使用了針對子節點的展現tree-item
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屬性 | 含義 | 示例 |
---|---|---|
treekey | 內部樹形展現 | deptId |
vistreekey | 樹形展現key | deptId |
ids | 默認顯示的數據 | 無 |
names | 默認顯示的數據 | 無 |
treename | 內部真是展現數據 | deptName |
vistreename | 樹形展現數據 | deptName |
treechildren | 當前樹的子節點數據 | 無 |
model | 當前樹的數據 | 無 |
(M)keyname | 用於接受返回的數據 | 無 |
控件接受數據處理邏輯框架
//接收到數據在外面套一層 if(this.model[this.treekey]==undefined){ this.treekey=this.vistreekey; } if(this.model[this.treename]==undefined){ this.treename=this.vistreename; } if (this.model.disabled == true) { this.model.disabled = 'disabled'; } console.log('組件註冊了嗎'); if ((','+this.ids+',').indexOf(','+this.model[this.treekey]+',') == -1) { this.checkStatus = false; this.model.checkStatus=this.checkStatus; } else { this.checkStatus=true; this.model.checkStatus=this.checkStatus; this.treekeys[this.model[this.treekey]]= this.checkStatus; this.treenames[this.model[this.treename]]= this.checkStatus; this.opt.key=this.treekeys; this.opt['name']=this.treenames; } if(this.ids!=''){ var idarr = this.ids; for(var index in idarr){ this.treekeys[idarr[index]]=true; } if (this.names.indexOf(",") == -1&&this.names!='') { this.treenames[this.names]=true; }else{ var namearr = this.names.split(","); for(var index in namearr){ this.treenames[namearr[index]]=true; } } }
渲染默認數據iview
var newOpt ={'key':{},'name':{}}; newOpt.key = Object.assign(this.opt.key, opt.key); newOpt.name = Object.assign(this.opt.name, opt.name); var flag=false; for(var index in this.model[this.treechildren]){ if(newOpt.key[this.model[this.treechildren][index][this.treekey]]!=true){ flag=true; } } if(!flag){ newOpt.key[this.model[this.treekey]]=true; newOpt.name[this.model[this.treename]]=true; this.checkStatus=true; this.model.checkStatus=true; } for(var key in newOpt){ this.filterRealCheck(newOpt[key]); } this.opt=newOpt; this.$emit('keyname', newOpt);
選擇節點數據處理ide
if(selected instanceof MouseEvent){ this.checkStatus=!this.checkStatus; }else{ this.checkStatus=selected; } this.model.checkStatus=this.checkStatus; if (this.model.expected != true) { this.treekeys[this.model[this.treekey]]= this.checkStatus; this.treenames[this.model[this.treename]]= this.checkStatus; this.opt.key=this.treekeys; this.opt['name']=this.treenames; } for(var index in this.$refs.child){ this.$refs.child[index].selectedObj(this.checkStatus); } this.$emit('keyname', this.opt);
由於筆者是側重後端,因此前端知識不是很好,這個組件寫的也是很亂。這個組件是以前臨時寫的。裏面沒有進行系統的梳理,上述的邏輯也是很亂。讀者須要的能夠選擇下列加入戰隊(#addMe)聯繫我 須要源碼的可關注下面公衆號發點擊進羣后諮詢。
原文出處:https://www.cnblogs.com/zhangxinhua/p/11375929.html