Ant Design Vue에서 지방 및 도시 셔틀 박스를 구현하는 방법에 대해 이야기하겠습니다.

// 自定义参数
export default {
  props: {
    dataSource: {
      // 数据源
      type: Array,
      default: () => [],
    },
    targetKey: {
      // 右侧框数据的 key 集合
      type: Array,
      default: () => [],
    },
  },
};

// handleChange回调函数：treeData-左侧树结构数据，toArray-右侧树结构数据，targetKeys-选中城市key集合
this.$emit("handleChange", this.treeData, toArray, this.targetKeys);

// 数据源示例
const dataSource = [
  {
    pid: "0",
    key: "1000",
    label: "黑龙江省",
    title: "黑龙江省",
    children: [
      {
        pid: "1000",
        key: "1028",
        label: "大兴安岭地区",
        title: "大兴安岭地区",
      },
    ],
  },
];

// ant-transfer穿梭框数据源
transferDataSource() {
  // 穿梭框数据源
  let transferDataSource = [];
  // 穿梭框数据转换，多维转为一维
  function flatten(list = []) {
    list.forEach((item) => {
      transferDataSource.push(item);
      // 子数据处理
      if (item.children && item.children.length) {
        flatten(item.children);
      }
    });
  }
  if (this.dataSource && this.dataSource.length) {
    flatten(JSON.parse(JSON.stringify(this.dataSource)));
  }
  return transferDataSource;
}

// ant-tree树数据源
treeData() {
  // 树形控件数据源
  const validate = (node, map) => {
    // 数据过滤处理 includes
    return node.title.includes(this.keyword);
  };
  const result = filterTree(
    this.dataSource,
    this.targetKeys,
    validate,
    this.keyword
  );
  return result;
}

// 树形结构数据过滤
const filterTree = (tree = [], targetKeys = [], validate = () => {}) => {
  if (!tree.length) {
    return [];
  }
  const result = [];
  for (let item of tree) {
    if (item.children && item.children.length) {
      let node = {
        ...item,
        children: [],
        disabled: targetKeys.includes(item.key), // 禁用属性
      };
      // 子级处理
      for (let o of item.children) {
        if (!validate.apply(null, [o, targetKeys])) continue;
        node.children.push({ ...o, disabled: targetKeys.includes(o.key) });
      }
      if (node.children.length) {
        result.push(node);
      }
    }
  }
  return result;
};

// 穿梭框：change事件
handleTransferChange(targetKeys, direction, moveKeys) {
  // 过滤：避免头部操作栏“全选”将省级key选中至右边
  this.targetKeys = targetKeys.filter((o) => !this.pidKeys.includes(o));
  // 选中城市数据：带省级信息返回，满足接口要求
  const validate = (node, map) => {
    return map.includes(node.key) && node.title.includes(this.keyword);
  };
  let toArray = filterTree(this.dataSource, this.targetKeys, validate);
  // handleChange回调函数：treeData-左侧树结构数据，toArray-右侧树结构数据，targetKeys-选中城市key集合
  this.$emit("handleChange", this.treeData, toArray, this.targetKeys);
},

// 穿梭框：搜索事件
handleTransferSearch(dir, value) {
  if (dir === "left") {
    this.keyword = value;
  }
},

// 树形控件：change事件
handleTreeChecked(keys, e, checkedKeys, itemSelect, itemSelectAll) {
  const {
    eventKey,
    checked,
    dataRef: { children },
  } = e.node;
  if (this.pidKeys && this.pidKeys.includes(eventKey)) {
    // 父节点选中：将所有子节点也选中
    let childKeys = children ? children.map((item) => item.key) : [];
    if (childKeys.length) itemSelectAll(childKeys, !checked);
  }
  itemSelect(eventKey, !isChecked(checkedKeys, eventKey)); // 子节点选中
},
// 树形控件：expand事件
handleTreeExpanded(expandedKeys) {
  this.expandedKeys = expandedKeys;
},

handleReset() {
  this.keyword = "";
  this.$nextTick(() => {
    // 搜索框关键字清除
    const ele = this.$refs.singleTreeTransfer.$el.getElementsByClassName(
      "anticon-close-circle"
    );
    if (ele && ele.length) {
      ele[0] && ele[0].click();
      ele[1] && ele[1].click();
    }
    // 滚动条回到顶部
    if (this.$el.querySelector(".mcd-tree")) {
      this.$el.querySelector(".mcd-tree").scrollTop = 0;
    }
    // 展开数据还原
    this.expandedKeys = [];
  });
}