deepin20.9安装及配置

1、先上效果

树型控件，选中项形成一棵新的树，若父选中，子自动选中，子取消，父不取消，子选中，所有的父节点自动取消。同时支持模糊检索，会检索出所有包含该内容的关联节点。

2、环境准备

1、react18

2、antd 4+

3、代码实现

原理：利用antd的tree组件，可以通过设置Tree组件的checkable属性为true，启用了多选功能，当节点被选中或取消选中时，会触发onCheck事件，我们可以在该事件处理函数中更新checkedKeys状态 通过控制checkedKeys来实现你想要的选中,核心代码如下：

checkStrictly设置为true，表示子节点选择受控，

     <DirectoryTree
      ...
         checkable={checkable}
          expandedKeys={expandedKeys}
          treeData={treeData || []}
  
            checkedKeys: checkKeys,
            checkStrictly: true,
            onCheck: (selectedKeys: any, other) => {
               // 当前节点的所有下级子节点
              const childrenNodeKeys = getAllChildrenNodeKey(other?.node);
              const node: any = other?.node;
              if (other?.checked) {
               // 当前节点的所有上级父节点
                const parentKeys = Array.isArray(node?.parentId) ? node?.parentId : [];
                let currentSelectedKeys = [...selectedKeys?.checked, ...parentKeys, ...childrenNodeKeys].filter(
                  (item: any, i: number, self: any): item is React.Key =>
                    !!(item && self?.indexOf?.(item) === i),
                );
                setCheckKeys?.(currentSelectedKeys);
                onCheck?.(currentSelectedKeys)
              } else {
                const currentSelectedKeys = (selectedKeys?.checked || []).filter(((key: string) => !childrenNodeKeys.includes(key) && key !== node?.rowId))
                setCheckKeys(currentSelectedKeys);
                onCheck?.(currentSelectedKeys);
              }
            }
         

        />

 当前节点的所有下级子节点

  const getAllChildrenNodeKey = (node: any) => {
    const result: any = [];
    const getChildrenKey = (childrenList: any) => {
      if (childrenList && childrenList.length > 0) {
        childrenList.forEach((item: any) => {
          if (item?.rowId) {
            result.push(item?.rowId)
          }
          if (item?.children && item?.children.length > 0) {
            getChildrenKey(item?.children || []);
          }

        });
      }
    }
    getChildrenKey(node?.children || []);
    return result;

  }

tree属性如下：

 关注我并且留言发源码

或者自动下载

https://download.csdn.net/download/yalywq/88814803?spm=1001.2014.3001.5503