在树图中需要一个tooltip，当鼠标在移动到label的时候展示。并且在点击item的时候的回调里需要有一个该节点是否展开或者收起的参数。

[longrenkai]

Version

4.2.1

Steps to reproduce

需在鼠标移动到label的时候展示tooltip，并且需要在每个节点后面有展开或者收起的按钮，当收起的时候为 当展开的时候 为 - 点击时展开或者收起节点。但是我只能做到鼠标移动到item的时候展示tooltip，我在做的时候只能做到让item的大小跟文字大小一致，然后将文字移动到item内部，这样虽然可以在鼠标移动到label的时候展示tooltip，但是无法在后面加上另外一个展开收起的按钮了，只能点击label或者item的时候自动展开收起，并且我在用chart.on('click')的时候的回调无法获取到该节点时候展开或者收起，在开发过程当中应该会有很多场景需要这个参数。

What is expected?

希望在鼠标hover到label的时候展示tooltip而不是移动到item，并且在点击item的时候需要一个是否展开或者收起的回调。

What is actually happening?

我无法实现这两种共同存在。

[echarts-bot]

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[github-actions]

This issue has been automatically marked as stale because it did not have recent activity. It will be closed in 7 days if no further activity occurs. If you wish not to mark it as stale, please leave a comment in this issue.

[github-actions]

This issue has been automatically closed because it did not have recent activity. If this remains to be a problem with the latest version of Apache ECharts, please open a new issue and link this to it. Thanks!