ant-design/components/tree/demo/basic-controlled.md

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---
order: 1
title: 受控操作示例
---
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受控操作示例
````jsx
import { Tree } from 'antd';
const TreeNode = Tree.TreeNode;
const x = 3;
const y = 2;
const z = 1;
const gData = [];
const generateData = (_level, _preKey, _tns) => {
const preKey = _preKey || '0';
const tns = _tns || gData;
const children = [];
for (let i = 0; i < x; i++) {
const key = `${preKey}-${i}`;
tns.push({ title: key, key });
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if (i < y) {
children.push(key);
}
}
if (_level < 0) {
return tns;
}
const level = _level - 1;
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children.forEach((key, index) => {
tns[index].children = [];
return generateData(level, key, tns[index].children);
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});
};
generateData(z);
const Demo = React.createClass({
getDefaultProps() {
return {
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multiple: true,
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};
},
getInitialState() {
return {
expandedKeys: ['0-0-0', '0-0-1'],
autoExpandParent: true,
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checkedKeys: ['0-0-0'],
selectedKeys: [],
};
},
onExpand(expandedKeys) {
console.log('onExpand', arguments);
// if not set autoExpandParent to false, if children expanded, parent can not collapse.
// or, you can remove all expanded chilren keys.
this.setState({
expandedKeys,
autoExpandParent: false,
});
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},
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onCheck(checkedKeys) {
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this.setState({
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checkedKeys,
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selectedKeys: ['0-3', '0-4'],
});
},
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onSelect(selectedKeys, info) {
console.log('onSelect', info);
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this.setState({ selectedKeys });
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},
render() {
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const loop = data => data.map((item) => {
if (item.children) {
return (
<TreeNode key={item.key} title={item.key} disableCheckbox={item.key === '0-0-0'}>
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{loop(item.children)}
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</TreeNode>
);
}
return <TreeNode key={item.key} title={item.key} />;
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});
return (
<Tree checkable multiple={this.props.multiple}
onExpand={this.onExpand} expandedKeys={this.state.expandedKeys}
autoExpandParent={this.state.autoExpandParent}
onCheck={this.onCheck} checkedKeys={this.state.checkedKeys}
onSelect={this.onSelect} selectedKeys={this.state.selectedKeys}>
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{loop(gData)}
</Tree>
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);
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},
});
ReactDOM.render(<Demo />, mountNode);
````