Element Ui 树形组件自定义样式与功能-Toy模板网

这篇具有很好参考价值的文章主要介绍了Element Ui 树形组件自定义样式与功能。希望对大家有所帮助。如果存在错误或未考虑完全的地方，请大家不吝赐教，您也可以点击"举报违法"按钮提交疑问。

一、功能描述：可实现树节点内容修改、增加节点、删除节点等，根据层级不同显示不同的图标等，已封装成组件。

<template>
  <div class="treelistitem">
    <el-tree
      :data="data"
      node-key="id"
      :render-content="renderContent"
      @node-click="handleNodeClick"
    ></el-tree>
  </div>
</template>

<script>
export default {
  data() {
    return {
      currentId: "",
      currentName: "",
      addName: "",
      open: false,
    };
  },
  props: {
    data: {
      type: Array,
      default: () => [],
    },
    deletefn: {
      type: Function,
    },
    edietFn: {
      type: Function,
    },
    addFn: {
      type: Function,
    },
    getId: {
      type: Function,
    },
    opreateId: {
      type: Number,
      default: 0,
    },
  },
  methods: {
    prevent() {
      this.currentId = "";
    },
    ok(data, node) {
      if (data.text == this.currentName) {
        this.currentId = "";
        return false;
      }

      let edietData = {
        data,
        node,
        name: this.currentName,
        id: this.currentId,
      };
      this.$emit("edietFn", edietData);
      data.text = this.currentName;
      this.currentId = "";
    },
    handleNodeClick(val) {
      this.$emit("getId", val.id);
    },
    handleInput(val) {
      this.currentName = val;
    },
    handClick(value, data, node) {
      if (value == "1") {
        this.currentId = data.id;
        this.currentName = data.text;
      } else if (value == "2") {
        let addData = { data, node };

        this.$emit("addFn", addData);
      } else {
        this.$confirm("确定删除?", "提示", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        })
          .then(() => {
            this.$emit("deletefn", 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);
          })
          .catch(() => {});
      }
    },
    renderContent(h, { node, data, store }) {
      return (
        <div class="custom-tree-node" style={{ width: "100%" }}>
          {!data.son ? (
            node.expanded ? (
              <i class="el-icon-folder-opened" ></i>
            ) : (
              <i class="el-icon-folder" ></i>
            )
          ) : (
            <i class="el-icon-document" ></i>
          )}
          {this.currentId === data.id ? (
            <el-input
              value={this.currentName}
              on-input={this.handleInput}
              style={{ width: "40%" }}
            ></el-input>
          ) : (
            <el-tooltip effect="dark" content={data.text} placement="top">
              <span class="custom-tree-node-text">{data.text}</span>
            </el-tooltip>
          )}
          {this.currentId === data.id ? (
            <span
              style={{ paddingLeft: "10px" }}
              class={this.opreateId != 3 ? "showTreeList" : "hideTreeList"}
            >
              <el-button
                type="info"
                icon="el-icon-circle-close"
                class="btnreturn"
                circle
                size="mini"
                on-click={this.prevent}
              ></el-button>
              <el-button
                type="primary"
                size="mini"
                icon="el-icon-check"
                class="btnsearch"
                circle
                on-click={() => {
                  this.ok(data, node);
                }}
              ></el-button>
            </span>
          ) : (
            <el-dropdown
              style={{ float: "right", paddingRight: "10px" }}
              class={this.opreateId != 3 ? "showTreeList" : "hideTreeList"}
              on-command={(value) => {
                this.handClick(value, data, node);
              }}
            >
              <span class="el-dropdown-link">
                <i class="el-icon-arrow-down el-icon--right"></i>
              </span>
              <el-dropdown-menu slot="dropdown">
                <el-dropdown-item
                  command="1"
                  class={
                    data.attributes.fatherId == 0
                      ? "hideCommand"
                      : "showCommand"
                  }
                >
                  <i class="el-icon-edit"></i>
                </el-dropdown-item>
                <el-dropdown-item command="2">
                  <i class="el-icon-plus"></i>
                </el-dropdown-item>
                <el-dropdown-item
                  command="3"
                  class={
                    data.attributes.fatherId == 0
                      ? "hideCommand"
                      : "showCommand"
                  }
                >
                  <i class="el-icon-delete"></i>
                </el-dropdown-item>
              </el-dropdown-menu>
            </el-dropdown>
          )}
        </div>
      );
    },
  },
};
</script>

<style lang="scss" >
.el-tree > .el-tree-node {
  min-width: 100%;
  display: inline-block;
}
.showCommand {
  display: inline-block;
}
.hideCommand {
  display: none;
}
.treelistitem.showTreeList {
  display: inline-block;
}
.treelistitem .hideTreeList {
  display: none;
}
.treelistitem .el-tree {
  width: 100% !important;
}
.treelistitem .el-dropdown {
  float: right;
  padding-right: 10px;
}
.treelistitem .custom-tree-node {
  width: 100%;
  height: 50px;
  line-height: 50px;
  font-size: 14px;
}
.treelistitem .custom-tree-node .custom-tree-node-text {
  width: 60%;
  height: 30px;
  padding-left: 10px;
  padding-bottom: 0.5px;
  display:inline-block;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}
.treelistitem .el-tree-node__content {
  height: 50px !important;
}
.treelistitem .el-input {
  height: 20px;
  margin-top: -20px;
  margin-left: 10px;
}
.treelistitem .el-input__inner {
  height: 30px;
}
</style>

二、调用组件示例：

<my-tree
    :data="treeList"
    :opreateId="roleId"
    @deletefn="delTree"
    @edietFn="updateTree"
    @addFn="addTree"
    @getId="getTreeId">
</my-tree>