That was something that was not build in yet. I added this to the tree
component:
/**
* Expand or collapse all nodes.
*
* @param expand
* If true, expand all nodes in the tree. Else collapse all
nodes
* in the tree.
*/
public void expandAll(boolean expand)
{
TreeNode root = (TreeNode)getTreeState().getModel().getRoot();
expandAll(new TreePath(root), expand);
}
private final void expandAll(TreePath parent, boolean expand)
{
TreeNode node = (TreeNode)parent.getLastPathComponent();
if (node.getChildCount() >= 0)
{
for (Enumeration e = node.children();
e.hasMoreElements();)
{
TreeNode n = (TreeNode)e.nextElement();
TreePath path = parent.pathByAddingChild(n);
expandAll(path, expand);
}
}
if (expand)
{
expandPath(parent);
}
else
{
collapsePath(parent);
}
}
/**
* Ensures that the node identified by the specified path is expanded
and
* viewable. If the last item in the path is a leaf, this will have no
* effect.
*
* @param path
* the <code>TreePath</code> identifying a node
*/
public void expandPath(TreePath path)
{
// Only expand if not leaf!
TreeModel model = getTreeState().getModel();
if (path != null && model != null &&
!model.isLeaf(path.getLastPathComponent()))
{
setExpandedState(path, true);
}
}
/**
* Ensures that the node identified by the specified path is collapsed
and
* viewable.
*
* @param path
* the <code>TreePath</code> identifying a node
*/
public void collapsePath(TreePath path)
{
setExpandedState(path, false);
}
and I added two links that use this in the nested example.
Have fun with it.
Eelco
On 5/29/06, David Leangen <[EMAIL PROTECTED]> wrote:
Hello!
My assumption when using the TreeModel is that the
wicket.markup.html.Tree is analogous to javax.swing.tree.JTree.
Although I'm not so familiar with JTree (or anything Swing for that
matter), there are many examples available out there.
However, there are a few things that are not so obvious to me right now
with the Wicket TreeModel.
1. How do I collapse branches by default?
2. I tried the following, but it did not seem to do anything:
getTreeState().getSelectionModel().setSelectionMode(
TreeSelectionModel.SINGLE_TREE_SELECTION );
Any hints would be great!
Thank you!
Dave
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