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介绍一款基于 vue-elementui 的 tree 树形公共组件
成果如下图：
提供源码：
template
<template>
<div class="el-tree-div" :class="{'show-tree':showTree,'hide-tree':!showTree}">
<div class="el-tree-top">
<div class="el-tree-title">
<span v-show="showTree">{{treeTitle}}</span>
<el-link type="primary" :underline="false" class="inline-block refresh-tree" v-show="showTree&&refresh" @click="clickFresh">
<svg-icon icon-class="refresh"/> 刷新 </el-link>
</div>
<svg-icon class="inline-block change-nav-i show-tree-icon" :icon-class="showTree?'put':'open'"@click.native="changeShowTree"/>
</div>
<div class="el-tree-content" v-show="showTree">
<el-input placeholder="输出关键字进行过滤" v-model.trim="filterText" clearable size="small"></el-input>
<div class="tree-body" :class="{'can-add-first-node':canAddFirstNode}">
<el-tree
:class="{'tree-no-data':!treeData}"
ref="tree"
:data="treeData"
:show-checkbox="showCheck"
:check-strictly="checkStrictly"
:default-expand-all="defaultExpandAll"
:expand-on-click-node="false"
highlight-current
@node-click="handleNodeClick"
@check-change="handleCheckChange"
node-key="id"
:default-expanded-keys="[]"
:default-checked-keys="[]"
:filter-node-method="filterNode"
:props="treeProps"
:render-content="showRender?renderContent:''">
</el-tree>
</div>
</div>
</div>
</template>script
<script>
export default {
name: 'el-tree-div',
props:['treeData','treeTitle','showRender','refresh','delMsg','showCheck','checkStrictly','defaultExpandAll','showAllBtn','canAddFirstNode'],
components: {},
data() {
return {
showTree:true,
filterText: '',
treeProps: {
children: 'children',
label: 'label'
},
};
},
created() {},
mounted() {this.filterText = '';},
methods: {filterNode(value, data) {if (!value) return true;
return data.label.indexOf(value) !== -1;
},
// check 点击
handleCheckChange(data) {this.$emit("checkNode",data,this.$refs.tree.getCheckedNodes());
},
// 点击节点
handleNodeClick(data) {this.$emit("clickNode",data);
},
// 返回选中节点数据
getCheckedNodes() {this.$emit("getCheckedNodes",this.$refs.tree.getCheckedNodes());
},
// 返回选中节点 key 数组
getCheckedKeys() {this.$emit("getCheckedKeys",this.$refs.tree.getCheckedKeys());
},
// 通过 node 节点渲染选中的元素
setCheckedNodes(nodes) {this.$refs.tree.setCheckedNodes(nodes);
},
// 通过 id 数组渲染选中的元素
setCheckedKeys(arr) {this.$refs.tree.setCheckedKeys(arr);
},
// 移除 tree 中选中的元素
delTreeCheck(id){let getCheckedKeys = this.$refs.tree.getCheckedKeys();
for(var i in getCheckedKeys){if(getCheckedKeys[i] == id){getCheckedKeys.splice(i,1);
}
}
this.setCheckedKeys(getCheckedKeys);
},
// 折叠开展 tree
changeShowTree(){if(this.showTree){this.$emit("changeShowTree",false);
}else{this.$emit("changeShowTree",true);
}
this.showTree = !this.showTree;
},
// 渲染树形图自定义插件
renderContent: function(h, data) {
let _this = this;
return h('span', {}, [h('span', data.data.label),
h("el-link", {
class: 'article-classify-add',
props: {type: 'info'},
title: '增加',
on: {click: function(event) {event.stopPropagation();
_this.$emit("getAdd",data.data);
// _this.articleClassifyAdd(event,data.data);
},
}
}, ''),
h("el-link", {
class: 'article-classify-edit',
props: {type: 'primary'},
title: '编辑',
on: {click: function(event) {event.stopPropagation();
_this.$emit("getEdit",data.data);
// _this.articleClassifyEdit(event,data.data);
},
}
}, ''),
h("el-link", {
class: data.data.parentId != "0" || this.showAllBtn ? 'article-classify-del' : '',
props: {type: 'danger'},
title: '删除',
on: {click: function(event) {event.stopPropagation();
if(data.data.parentId == "0" && !_this.showAllBtn){_this.$warning("主企业不能删除!");
return;
}
if(!_this.delMsg){_this.delMsg = "删除后不可复原, 请确认后删除!";}
_this.$confirm(_this.delMsg, '提醒', {
confirmButtonText: '确定',
cancelButtonText: '勾销',
type: 'warning'
}).then(() => {_this.$emit("getDel",data.data);
}).catch(() => {});
// _this.articleClassifyDel(event,data.data);
},
}
}, ''),
])
},
// 点击刷新按钮
clickFresh(){
this.filterText = '';
this.$emit("clickFresh");
},
},
watch: {filterText(val) {this.$refs.tree.filter(val);
}
}
};
</script>style
<style scoped>
.el-tree-div{border: 1px solid #E4E4E4;background-color: white;height: auto;box-shadow: 0 0 10px #E8F4FF;border-radius: 3px;}
.el-tree-top{padding-left: 16px;line-height: 30px;height: 30px;border-bottom: 1px solid #E4E4E4;background-color: #fff;position: relative;}
.refresh-tree{margin-left:12px; line-height: 30px;}
.refresh-tree .svg-icon {vertical-align: -0.1em; margin-right:4px;}
.el-tree-title{font-size: 14px;font-weight: 700;}
.show-tree-icon{position: absolute;right: 8px; color: #54595c; top: 16px; width: 20px; height: 15px;margin: 0;font-size: 20px;cursor: pointer;}
.el-tree-content{padding: 10px;}
.tree-body{margin-top: 10px;height: auto;overflow: auto;}
.tree-body .el-tree{width: fit-content;font-size: 12px;min-width: max-content;}
.tree-body /deep/ .el-tree__empty-block{width: 278px;}
.tree-no-data{width: 100%!important;}
.hide-tree .el-tree-top{height: 500px;}
.hide-tree .show-tree-icon{right: 5px;}
.tree-body /deep/ .article-classify-add,.tree-body /deep/ .article-classify-edit,.tree-body /deep/ .article-classify-del {
display: inline-block;
width: 15px;
height: 15px;
vertical-align: middle;
border-radius: 3px;
background-size: 100%;
}
.tree-body /deep/ .article-classify-add {
background-color: #409eff;
margin-left: 20px;
background: url(https:// 图标门路 /tree-add-icon.png) no-repeat center center;
}
.tree-body /deep/ .article-classify-edit {
background-color: #409eff;
margin-left: 5px;
background: url(https:// 图标门路 /tree-edit-icon.png) no-repeat center center;
}
.tree-body /deep/ .article-classify-del {
background-color: #f56c6c;
margin-left: 5px;
background: url(https:// 图标门路 /tree-reduce-icon.png) no-repeat center center;
}
.can-add-first-node /deep/ .el-tree-node:nth-last-child(2) .el-link{display: none;}
.can-add-first-node /deep/ .el-tree-node:nth-last-child(2)>div>span>span{display: inline-block;width: 200px;text-align: center;color: #0994DC;}
.el-tree-content /deep/ .el-link{opacity: 0;}
.el-tree-content /deep/ .el-link:last-child{margin-right: 60px;}
.el-tree-content /deep/ .el-tree-node__content:hover .el-link{opacity: 1;}
.el-tree--highlight-current{width: 100% !important;}
</style>可能公布当前格局有点乱，复制之后格式化就好
很实用，望小伙伴们点赞、分享、珍藏，不然当前找不着的嘿
正文完
