el-tree增删改功能记录

el-tree增删改功能记录

需实现功能：

添加同级节点
添加子级节点
重命名节点
删除节点

HTML

 <el-tree ref="tree" :data="data" node-key="id" default-expand-all draggable>
        <div class="tree-node" slot-scope="{ node, data }">
          <div class="tree-node">
            <span v-if="data.label&&!node.checked" class="node-tit">{{ data.label }}</span>
            <div v-else>
              <el-input v-model="data.label"></el-input>
              <el-button @click="saveLable(node, data)" class="save-btn">保存</el-button>
            </div>
            <span>
              <el-dropdown>
                <span class="el-dropdown-link">
                  <i class="el-icon-more"></i>
                </span>
                <el-dropdown-menu slot="dropdown">
                  <el-dropdown-item @click.native="() => insertAfter(node, data)">添加同级章节</el-dropdown-item>
                  <el-dropdown-item @click.native="() => append(node,data)">添加子级章节</el-dropdown-item>
                  <el-dropdown-item @click.native="() => nodeClick(node)">重命名</el-dropdown-item>
                  <el-dropdown-item @click.native="() => remove(node, data) ">删除</el-dropdown-item>
                </el-dropdown-menu>
              </el-dropdown>
            </span>
          </div>
        </div>
      </el-tree>

javascript

//添加同级节点
insertAfter(node, data) {
  const nodeList = node.parent.childNodes;
  const curArr = node.parent.data.children || node.parent.data;
  const index = curArr.findIndex(d => d.id === data.id) + 1;
  console.log(node);
  new Promise((resolve, reject) => {
    const newBrother = { id: ++this.id, label: "", children: [] };
    curArr.splice(index, 0, newBrother);
    resolve();
  }).then(res => {
    console.log(nodeList[index]);
    nodeList[index].checked = true;
  });
},
//添加子节点
append(node, data) {
  const nodeList = node.childNodes;
  console.log(nodeList);
  new Promise((resolve, reject) => {
    const newChild = { id: ++this.id, label: "", children: [] };
    if (!data.children) {
      this.$set(data, "children", []);
    }
    data.children.push(newChild);
    resolve();
  }).then(res => {
    nodeList[nodeList.length - 1].checked = true;
  });
},
//获取当前节点修改checked值
nodeClick(node) {
  node.checked = true;
},
//删除节点
remove(node, data) {
  const parent = node.parent;
  const children = parent.data.children || parent.data;
  const index = children.findIndex(d => d.id === data.id);
  children.splice(index, 1);
},
//保存label
saveLable(node) {
  node.checked = false;
},