【记录31】elementUI el-tree 虚线、右键、拖拽

本文主要是介绍【记录31】elementUI el-tree 虚线、右键、拖拽，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

父组件

<eltree :treeData="treeData"></eltree>

import eltree from "../../components/tree.vue";
export default {name: '',components: { // org_tree ,eltree},watch: {},data() {return {orgFormchoose: {},orgForm: { type: 0, limits: 1 },operateIndex: 1, // 默认 1  查看operateDisable: true,treeData: [{ parentId: null, id: 1, level: 1, type: null, checkbox: '1', allname: '组织机构1', name:'机构1简称', code:'机构1编码', show: true, children: [{ parentId: 1, id: 101, level: 2, type: null, checkbox: '2', allname: '组织机构1-1', show: false, },{ parentId: 1, id: 102, level: 2, type: null, checkbox: '3', allname: '组织机构1-2', show: false, },] },{ parentId: null, id: 2, level: 1, type: null, checkbox: '4', allname: '组织机构2', show: true, children: [{ parentId: 2, id: 201, level: 2, type: null, checkbox: '5', allname: '组织机构2-1', show: false, },{ parentId: 2, id: 202, level: 2, type: null, checkbox: '6', allname: '组织机构2-2', show: false, children: [{ parentId: 202, id: 2001, level: 3, type: null, checkbox: '7',  allname: '组织机构2-1-1', show: false,children: [{ parentId: 2001, id: 20001, level: 3, type: null, checkbox: '8', allname: '8组织机构2-1-1', show: false, },{ parentId: 2001, id: 20002, level: 3, type: null, checkbox: '9', allname: '9组织机构2-2-2', show: false, },{ parentId: 2001, id: 20003, level: 3, type: null, checkbox: '11', allname: '11组织机构2-1-1', show: false, },{ parentId: 2001, id: 20004, level: 3, type: null, checkbox: '12', allname: '12组织机构2-2-2', show: false, },{ parentId: 2001, id: 20005, level: 3, type: null, checkbox: '13', allname: '13组织机构2-1-1', show: false, },] },{ parentId: 202, id: 2002, level: 3, type: null, checkbox: '10', allname: '组织机构2-2-2', show: false, },] },] },{ parentId: null, id: 3, level: 1, type: null, checkbox: '100', allname: '组织机构3', show: true, }],}},mounted() {},methods: {// 选择的节点信息ParentChooseOrgTree(_ulItem) {this.orgForm = _ulItem;},//  右击  删除ParentChooseDeleteOrgTree(_ulItem, _item) {this.operateIndex = _item.value;},//  组织机构点击操作//operateClick(_item, _index) {//    console.log(_item.label, _index);//    if (_index == 0 || _index == 2) {//        this.operateDisable = false;//    }else{//        this.operateDisable = true;//    }//    this.operateIndex = _index;//    if (_index === 3) {//        this.$alert('','',{//            confirmButtonText: '确定',//            callback: action  => {//                if (action  === 'confirm') {//                    this.$message.success('已悉知')//                 }//             }//         })//         this.$alert('提醒：当前组织机构树存在下级节点，无法删除！<br/>提醒：请再次确认删除本级组织机构，删除后无法恢复！', '提示', {//              confirmButtonText: '确定',//              callback: action => {//                  if (action == "confirm") {//                      this.$message.success('已悉知')//                  }//              }//          });//      }//  }}
}

子组件

<template><div><el-treeclass="tree":indent="0"ref="tree":show-checkbox="true":data="data":props="defaultProps"node-key="checkbox"empty-text="暂无节点权限，联系管理员":default-expand-all="false":check-strictly="true":check-on-click-node="true":accordion="false":highlight-current="true"@node-contextmenu="nodeMenu"@node-drop="handleDrop"draggable:allow-drop="allowDrop"style="padding-left: 0px;"><span slot-scope="{ data }"><!-- <span slot-scope="{ node, data }"> --><span class="typecss">{{ data.level == 1?'局':data.level == 2?'司':data.level == 3?'项':data.level == 4?'隧': '' }}</span><span class="identy" :style="{ color: data.type == 1?'#2762e2':data.type == 0?'#36b636': '#999' }">{{ data.type == 1?'管':data.type == 0?'用': '' }}</span><span id="LABEL">{{ data.allname }}</span><!-- <span class="idty">{{ node.level == 1?'主':node.level == 2?'次':node.level == 3?'项':node.level == 4?'隧': '其' }}</span> --></span></el-tree><!--  --><div v-show="optionCardShow" id="right-menu" ref="container" :style="{top: optionCardY  +'px', left: optionCardX  +'px'}" @contextmenu.prevent="rightrightClick($event)"><span style="position:absolute; top:0px; right:0px; color:#333;border:1px solid #999; font-size:13px;" @click="optionCardShow=false"><i class="el-icon-close"></i></span><div style="margin-top:5px;"><div class="btu" v-for="(item, index) in btuList" :key="index" @click="BtuClick(item)"><span>{{ item.label }}</span></div><!-- <div class="btu"><span>查看本级机构</span></div><div class="btu"><span>修改本级机构</span></div><div class="btu" @click="BtuClick"><span>删除本级机构</span></div><div class="btu"><span>映射本级机构</span></div> --></div></div></div>
</template>

<script>export default {props: [ 'treeData'],data() {return {optionCardShow: false,optionCardY: 100, optionCardX: 100, postionStyle:{},data:this.treeData,  //  父组件传值selectNode: {},rightoptionData: {},btuList: [{ label: '新增', value: 0 },{ label: '查看', value: 1 },{ label: '修改', value: 2 },{ label: '删除', value: 3 },{ label: '迁移', value: 4 }],btuUserList: [],defaultProps: {children: 'children',label: 'allname'}};},beforeDestroy() {window.removeEventListener('resize', this.handleResize);},mounted() {console.log(this.treeData);// this.data = this.treeData;window.addEventListener('resize', this.handleResize);},methods: {// handleDragStart(node, ev) {  // 节点开始拖拽时触发的事件//   console.log('节点开始拖拽时触发的事件  drag start', node, ev);// },// handleDragEnter(draggingNode, dropNode, ev) {  //  拖拽进入其他节点时触发的事件//   console.log('拖拽进入其他节点时触发的事件  tree drag enter: ',draggingNode, dropNode, ev);// },// handleDragLeave(draggingNode, dropNode, ev) {  //  拖拽离开某个节点时触发的事件// if (draggingNode.data.parentId !== dropNode.data.parentId) {//    alert('超出拖拽的节点范围，拖拽只能在同父节点下')// }// console.log('****************拖拽离开某个节点时触发的事件 tree drag leave: ',draggingNode, dropNode.label, ev);// },// handleDragOver(draggingNode, dropNode, ev) {  // 在拖拽节点时触发的事件（类似浏览器的 mouseover 事件）// // if (condition) {// // }//   console.log('在拖拽节点时触发的事件（类似浏览器的 mouseover 事件）  tree drag over: ', draggingNode, dropNode.label, ev);// },// handleDragEnd(draggingNode, dropNode, dropType, ev) {  //  拖拽结束时（可能未成功）触发的事件//   console.log('拖拽结束时（可能未成功）触发的事件  tree drag end: ',draggingNode, dropNode && dropNode.label, dropType, ev);// },handleDrop(draggingNode, dropNode, dropType, ev) {    //   拖拽成功完成时触发的事件this.getProjectVolumeTree();  //  拖拽成功 触发相应接口console.log('拖拽成功完成时触发的事件  tree drop: ',draggingNode, dropNode.label, dropType, ev);},allowDrop(draggingNode, dropNode, type) {  //  拖拽时判定目标节点能否被放置console.log('拖拽时判定目标节点能否被放置  allowDrop', draggingNode, dropNode, type);if (draggingNode.data.level === dropNode.data.level) {if (draggingNode.data.parentId === dropNode.data.parentId) {return type === "prev" || type === "next";} else {return false;}} else {// 不同级进行处理return false;}},//tree拖拽成功完成时触发的事件 getProjectVolumeTree() {console.log('tree拖拽成功完成时触发的事件');},allowDrag(draggingNode) {console.log('8989', draggingNode.data.allname);// return draggingNode.data.label.indexOf('三级 3-2-2') === -1;return true;},//  单选handleNodeClick (data, checked, node) {console.log(data,'ppp');console.log( checked, 'll');console.log(node);if (checked) {this.$refs.tree.setCheckedNodes([data])this.selectNode = data;this.$parent.ParentChooseOrgTree(data);}},//  右击nodeMenu(e, data, n, t) {console.log(e, data, n,t, '右击');this.optionCardShow = falsethis.optionCardX = e.x // 让右键菜单出现在鼠标右键的位置this.optionCardY = e.ythis.$parent.ParentChooseOrgTree(data);this.rightoptionData = data// this.node = n // 将当前节点保存this.optionCardShow = true // 展示右键菜单},rightMenuClose(event) {let dom = document.getElementById('right-menu')if (dom) {if (!dom.contains(event.target)) {//点击到了id为right-menu以外的区域，就隐藏菜单this.optionCardShow = false}}},// 右击demo事件BtuClick(_item) {console.log(_item);switch (_item.value) {case 0:this.$message.warning(_item.label)break;case 1:this.$message.warning(_item.label)break;case 2:this.$message.warning(_item.label)break;case 3: //删除事件this.$parent.ParentChooseDeleteOrgTree(this.selectNode, _item);  //  父组件事件，在这里是子组件调用父组件函数this.$message.warning(_item.label)break;case 4:this.$message.warning(_item.label)break;default:break;}},//rightrightClick(event) {event.preventDefault();},}};
</script>