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基于 Vue 的树形选择组件的示例代码

程序员文章站 2022-09-08 21:43:08
本文介绍了基于 vue 的树形选择组件。分享给大家,具体如下: 系统要求:vue 2 基本特性  完美的多级联动效果  支持...

本文介绍了基于 vue 的树形选择组件。分享给大家,具体如下:

系统要求:vue 2

基本特性

  •  完美的多级联动效果
  •  支持无限多的分级
  •  有 全选、半选、不选 三种状态

 截图展示

基于 Vue 的树形选择组件的示例代码

代码如下:

 <!doctype html>
<html lang="en">
<head>
 <meta charset="utf-8">
 <link rel="icon" href="https://v1-cn.vuejs.org/images/logo.png" rel="external nofollow" type="image/x-icon">
 <title>vue tree select example</title>
 <script src="https://cdn.bootcss.com/vue/2.4.2/vue.js"></script>
</head>
<body>

 <!-- 递归引用的模板 -->
 <template id="one-select" style="display: none;">
  <ul>
   <li v-for="(node, key, index) in tree">
    <div v-if="key != 'selected'">
     <div v-on:click="nodeclick(node, index)" v-bind:class="[node.selected == null ? 'tree-select-null' : (node.selected == 'half' ? 'tree-select-half' : 'tree-select-full'), 'tree-select', 'inline-block']"></div>
     
     <div class="inline-block">{{ key }}</div>
     <div v-if="key != ''">
      <one-select v-bind:tree="node" v-bind:isroot="false"></one-select>
     </div>
    </div>
   </li>
  </ul>
 </template>

 <!-- 整体树容器 -->
 <div id="tree">
  <one-select v-bind:isroot="true" v-bind:tree="tree"></one-select>
 </div>

<textarea id="treedatajson" style="display: none;">
{
 "客户管理": {
  "我的客户": {
   "新分配": {},
   "跟进中": {},
   "签单客户": {},
   "长期客户": {}
  },
  "长期客户权限": {
   "设为长期客户": {},
   "还原长期客户": {}
  }
 },
 "采购列表": {
  "添加异常客情": {},
  "添加采购单": {},
  "采购退货单列表": {},
  "供应商管理": {},
  "供应商联系人": {},
  "品牌列表": {
   "宝洁": {},
   "乐视": {
    "乐视网": {},
    "乐视手机": {
     "乐视手机 1": {},
     "乐视手机 2": {},
     "乐视手机 3": {},
     "乐视手机 4": {},
     "乐视手机 5": {
      "体验超深层级": {
       "继续体验超深层级": {
        "依然体验超深层级": {},
        "依然体验超深层级 2": {}
       }
      }
     }
    },
    "乐视电视": {}
   },
   "可口可乐": {},
   "圣象": {}
  }
 }
}
</textarea>

<script>
// 初始数据
var treedatajson = document.getelementbyid("treedatajson").value;
var treedata = json.parse(treedatajson);
vue.component('one-select', {
 name: 'one-select',
 template: '#one-select',
 props: ['tree', 'isroot'],
 created: function() {
  var realtree = object.assign({}, this.tree);
  delete realtree.selected;
  if (object.keys(realtree).length === 0) { // 判断最低级,再刷新父级
   this.refreshallparentnodes(this.$parent);
  }
 },
 methods: {
  nodeclick: function(node, index) {
   if (node.selected === 'full' || node.selected === 'half') {
    vue.set(node, 'selected', null);
   } else {
    vue.set(node, 'selected', 'full');
   }
   this.refreshallparentnodes(self.$parent);
   this.refreshallparentnodes(this);
   this.refreshallsonnodes(this.$children[index], node.selected);
  },
  refreshallsonnodes: function(node, status) {
   if (node instanceof vue && node.$children.length) {
    for (index in node.$children) {
     vue.set(node.$children[index].tree, 'selected', status);
     // 递归计算子级
     this.refreshallsonnodes(node.$children[index], status);
    }
   }
  },
  refreshallparentnodes: function(node) {
   if (node instanceof vue) {
    var status = null;
    var nullcount = 0;
    var halfcount = 0;
    var fullcount = 0;
    for (index in node.$children) {
     if (typeof node.$children[index].tree.selected === 'undefined') {
      nullcount++;
     } else if (node.$children[index].tree.selected === null) {
      nullcount++;
     } else if (node.$children[index].tree.selected === 'half') {
      halfcount++;
     } else if (node.$children[index].tree.selected === 'full') {
      fullcount++;
     }
    }
    if (fullcount === node.$children.length) {
     status = 'full';
    } else if (nullcount === node.$children.length) {
     status = null;
    } else {
     status = 'half';
    }
    vue.set(node.tree, 'selected', status);

    // 递归计算父级
    this.refreshallparentnodes(node.$parent);
   }
  },
  log: function(o) {
   console.log(o);
  }
 }
});
vm = new vue({
 el: '#tree',
 data: {
  tree: treedata
 },
 methods: {
  // 返回最终数据
  getresult: function() {
   return object.assign({}, this.tree);
  }
 }
});
</script>

<style>
#tree {
 width: 500px;
 margin: 0 auto;
 margin-top: 50px;
}
li {
 list-style: none;
 line-height: 25px;
}
.inline-block {
 display: inline-block;
}
.tree-select {
 width: 13px;
 height: 13px;
 line-height: 16px;
 margin: 3px;
 display: inline-block;
 vertical-align: middle;
 border: 0 none;
 cursor: pointer;
 outline: none;
 background-color: transparent;
 background-repeat: no-repeat;
 background-attachment: scroll;
 background-image: url('selects.png');
}
.tree-select-null {
 background-position: 0 0;
}
.tree-select-full {
 background-position: -14px 0;
}
.tree-select-half {
 background-position: -14px -28px;
}
</style>

</body>
</html>

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。