已知树结构已从接口中取出来,帮我用react+typescript+AntDesign的开发方式实现可以搜索搜索框输入的string以展示搜索结果树
时间: 2024-03-14 21:42:39 浏览: 101
好的,可以按照以下步骤进行开发:
1. 在 AntDesign 中引入 Tree 和 Input 组件:
```typescript
import { Tree, Input } from 'antd';
const { Search } = Input;
```
2. 创建组件的 state,包括搜索框的值和搜索结果:
```typescript
interface State {
searchValue: string;
expandedKeys: string[];
searchResults: TreeNode[];
}
```
3. 在组件的 constructor 中初始化 state:
```typescript
constructor(props: Props) {
super(props);
this.state = {
searchValue: '',
expandedKeys: [],
searchResults: [],
};
}
```
4. 实现搜索逻辑,通过遍历树结构,找到符合搜索关键字的节点:
```typescript
const { treeData } = this.props;
const { searchValue } = this.state;
const searchResultKeys: string[] = [];
const loop = (data: TreeNode[]) => {
data.forEach((item: TreeNode) => {
if (item.title.indexOf(searchValue) > -1) {
searchResultKeys.push(item.key);
}
if (item.children) {
loop(item.children);
}
});
};
loop(treeData);
const searchResults = treeData.filter((item: TreeNode) =>
searchResultKeys.includes(item.key)
);
this.setState({
searchResults,
});
```
5. 实现搜索框的 onChange 事件,更新搜索框的值并重新搜索:
```typescript
onSearch = (value: string) => {
this.setState({
searchValue: value,
expandedKeys: [],
});
this.searchTree(value);
};
```
6. 实现 Tree 的 onExpand 事件,更新展开的节点:
```typescript
onExpand = (expandedKeys: string[]) => {
this.setState({
expandedKeys,
});
};
```
7. 渲染组件,包括搜索框和 Tree:
```typescript
render() {
const { searchValue, expandedKeys, searchResults } = this.state;
const { treeData } = this.props;
const loop = (data: TreeNode[]) =>
data.map((item: TreeNode) => {
const index = item.title.indexOf(searchValue);
const beforeStr = item.title.substr(0, index);
const afterStr = item.title.substr(index + searchValue.length);
const title =
index > -1 ? (
<span>
{beforeStr}
<span style={{ color: '#f50' }}>{searchValue}</span>
{afterStr}
</span>
) : (
<span>{item.title}</span>
);
if (item.children) {
return (
<Tree.TreeNode key={item.key} title={title}>
{loop(item.children)}
</Tree.TreeNode>
);
}
return <Tree.TreeNode key={item.key} title={title} />;
});
return (
<div>
<Search placeholder="Search" onChange={this.onSearch} />
<Tree
onExpand={this.onExpand}
expandedKeys={expandedKeys}
selectedKeys={[]}
>
{loop(searchResults.length > 0 ? searchResults : treeData)}
</Tree>
</div>
);
}
```
以上就是一个简单的搜索树结构的实现,具体的实现细节还需要根据具体的业务场景来进行调整。
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