Question

I’m using the tree control in GWT. I have a custom widget that I add as a TreeItem:

Tree testTree = new Tree();
testTree.addItem(myWidget);

I would like to retrieve myWidget instance on the node opening event. Is it possible ? Does anybody knows which event should I be using ?

I tried the openHandler<TreeItem> but what I retrieve is the… tree item.

Answer 1

I was looking to far.

To answer my original question:
The event we retrieve in the openHandler has all the info I needed.

public void onOpen(OpenEvent<TreeItem> event) {
// The TreeItem
TreeItem ti = event.getTarget();

// The widget added in the treeItem
CustomWidget cw = (CustomWidget)event.getTarget().getWidget();
}

Just for info:

Instead of adding a widget (which I didn’t use anywhere else) to my TreeItem I extended TreeItem to create my own Widget. So I simply needed event.getTarget() to access it.

About FastTree:

For what I read people working with GWT usually go straight to using FastTree which, as Jason said, offers more possibilities and better performances.
I had problem running FastTree in my configuration (even with the examples code) and little time to deal with it so that’s why I sticked with the native Tree widget.