I posted a question a few days ago on how to best deal with frames, in
particular how to pass arguments between a tree view in one frame and
a list view in another. I didn't get any takers.
I finally determined that there was no good way other than to use
plain-old javascript to push values from the tree up to the parent
frame, where they are dispersed to the other frames.
I wanted to use LinkTree, but really didn't need most of the features
other than the look and feel. I just needed to be able to insert an
onclick link that would pass a value to my parent frame.
After a lot of digging I came up with a solution that worked, but
seems verbose for the job I'm attempting. My question for dear reader
is this: Can you propose an more concise solution?
public class CategoryTree extends LinkTree
{
@Override
protected Component newNodeComponent(String id, IModel model)
{
return new LinkIconPanel(id, model, CategoryTree.this)
{
private static final long serialVersionUID = 1L;
protected void onNodeLinkClicked(TreeNode node,
BaseTree tree,
AjaxRequestTarget target)
{
super.onNodeLinkClicked(node, tree, target);
CategoryTree.this.onNodeLinkClicked(node, tree,
target);
}
protected Component newContentComponent(String
componentId,
BaseTree tree, IModel model)
{
Label l = new Label(componentId, model)
{
private static final long serialVersionUID = 1L;
@Override
protected void onComponentTag(ComponentTag tag)
{
super.onComponentTag(tag);
tag.put("onclick",
"parent.notifyViews(this.getAttribute('catalogid'))");
}
};
DefaultMutableTreeNode n =
(DefaultMutableTreeNode)model.getObject();
if (n.getUserObject() instanceof EcCategoryTreeNode)
{
EcCategoryTreeNode ec =
(EcCategoryTreeNode)n.getUserObject();
l.add(new SimpleAttributeModifier("catalogid", "" +
ec.getId()));
}
return l;
};
};
}
public CategoryTree(String s, TreeModel tm)
{
super(s,tm);
this.setLinkType(LinkType.REGULAR);
}
}
Devin
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