It looks like there are 2 default mechanisms to expand a folder node in a JTree. One is to click on the expanded/collapsed icon next to a node. The other way is to double-click on the node itself.
看起来有两个默认机制来扩展JTree中的文件夹节点。一种方法是单击节点旁边的展开/折叠图标。另一种方法是双击节点本身。
Is there a way to stop this 2nd mechanism? I would like to override the double-click on a node so it does something (updates another display to show statistics on the node being double-clicked), and would like it to not expand/collapse the tree node. (just to be clear: I don't want to prevent the node from being expanded/collapsed, I just want to require the user to click on the expanded/collapsed icon.) How can I do this?
有办法阻止这第二种机制吗?我希望覆盖对节点的双击，以便它做一些事情(更新另一个显示以显示双击的节点上的统计信息)，并希望它不展开/折叠树节点。(明确一点:我不想阻止节点展开/折叠，我只想要求用户单击展开/折叠图标。)我该怎么做呢?
2 个解决方案
#1
26
From the relevant API page, you would do something like this:
从相关API页面中，您可以做如下操作:
JTree tree = new JTree();
tree.setToggleClickCount(0);
This means you must use 0 clicks to expand a tree node, effectively disabling double click. This will not interfere with other methods of tree expansion.
这意味着必须使用0单击来展开树节点，有效地禁用双击。这不会干扰其他树的扩张方法。
#2
3
Call setToggleClickCount(0) on the JTree
在JTree上调用setToggleClickCount(0)。
This will effectively disable expanding on double-click.
这将有效地禁用双击扩展。
#1
26
From the relevant API page, you would do something like this:
从相关API页面中，您可以做如下操作:
JTree tree = new JTree();
tree.setToggleClickCount(0);
This means you must use 0 clicks to expand a tree node, effectively disabling double click. This will not interfere with other methods of tree expansion.
这意味着必须使用0单击来展开树节点，有效地禁用双击。这不会干扰其他树的扩张方法。
#2
3
Call setToggleClickCount(0) on the JTree
在JTree上调用setToggleClickCount(0)。
This will effectively disable expanding on double-click.
这将有效地禁用双击扩展。