reactjs - 如何以编程方式在Material Ui中展开或折叠Tree Item？(How to programmatically expand or collapse Tree Item in Material Ui?)

Question

Is there any way to programmatically expand and collapse tree items in material ui?

(有什么方法可以以编程方式扩展和折叠材料ui中的树项目？)

I can do that by clicking on the item, but there are other times when I would like to collapse and expand the tree items based on an action in the tree view.

(我可以通过单击项目来做到这一点，但是有时我想根据树视图中的操作折叠和展开树项目。)

is it possible?

(可能吗？)

  ask by Akira Kotsugai translate from so

Answer 1

There are 1 callback function you can use

(您可以使用1个回调函数)

onNodeToggle :Callback fired when a TreeItem is expanded/collapsed.

(onNodeToggle：展开/折叠TreeItem时触发的回调。)

Signature: function(nodeId: string, expanded: boolean) => void nodeId: The id of the toggled node.

(签名：function（nodeId：字符串，扩展：布尔值）=> void nodeId：切换节点的ID。)

expanded: The node status - If true the node was expanded.

(扩展：节点状态-如果为true，则扩展节点。)

If false the node was collapsed.

(如果为false，则节点已折叠。)

Document link

(文件连结)