JTree will expand but not collapse

[dablick]

I'm trying to write some buttons that entirely expand and entirely collapse
a JTree and would appreciate any help.

For some reason, the code I have will expand the tree, but not collapse it.

Here's the basic recursive tree walking function I use to do it. Why does
it only for the expand case and not the collapse case?

void walk_subtree(TreeNode n, boolean expand) {

Enumeration e = n.children();

while (e.hasMoreElements()) {
DefaultMutableTreeNode c = (DefaultMutableTreeNode)
e.nextElement();
TreePath tp = cvt2(c);

if (expand) {
jTree1.expandPath(tp);
}
else {
jTree1.collapsePath(tp);
}

walk_subtree(c, expand);
}
}

 

[Christian Kaufhold]

I'm trying to write some buttons that entirely expand and entirely collapse
a JTree and would appreciate any help.

For some reason, the code I have will expand the tree, but not collapse it.

Here's the basic recursive tree walking function I use to do it. Why does
it only for the expand case and not the collapse case?

collapsePath also expands the parent path of the path to collapse.

Use post-order walk for collapsePath.



Christian

 

[dablick]

Yep. That was it.

Thanks,

db

collapsePath also expands the parent path of the path to collapse.

Use post-order walk for collapsePath.



Christian