Follow the chain of getParentItem() until it returns null.
http://google-web-toolkit.googlecode.com/svn/javadoc/2.1/com/google/gwt/user/client/ui/TreeItem.html#getParentItem()
On Jun 2, 3:25 am, junior <kubinca...@gmail.com> wrote:
> Hejsan
> I am building GWT Tree and need to get information about level of
> current opened TreeItem. Let me describe more detail.
> I build up first level(Sport List) of tree so it looks like:
> + Athletics
> + Ice Hockey
> + Footbal
>
> Second level(Countries List) must looks like:
> + Athletics
> + Ice Hockey
> + Canada
> + USA
> + Russia
> + Footbal
>
> Third level(League List) must looks like:
> + Athletics
> + Ice Hockey
> + Canada
> + Tournament
> + 1.League
> + 2.League
> + AAA League
> + USA
> + Russia
> + Footbal
>
> Why I need info abou opened TreeItem? By level of opened TreeItem fire
> up different SELECT of database so if I open up "+ Ice Hockey" - it's
> first level, then I fire up SELECT on database to get list of
> countries for sport "Ice Hockey". Next if I open up country "+ Canada"
> then fire up SELECT on databases to get list of all leagues at country
> "Canada" for sport "Ice Hockey".
>
> I call open handler for Tree for TreeItem like this:
>
> // Add a handler that automatically generates some children
> statTree.addOpenHandler(new OpenHandler<TreeItem>() {
>
> public void onOpen(OpenEvent<TreeItem> event) {
> // tree item that was clicked
> TreeItem itemSelected = event.getTarget();
> if (itemSelected.getChildCount() == 1) {
> // Close item immediately
> itemSelected.setState(false, false);
>
> // Add a random number of children to
> the item
> String itemText =
> itemSelected.getText();
>
> // different request to database,
> according level of TreeItem
> // ??
>
> // just temporary dummy data
> of subtree items
> int numChildren = Random.nextInt(5) +
> 2;
> for (int i = 0; i < numChildren; i++)
> {
> // tree item to be added
> TreeItem childDescendant =
> itemSelected
>
> .addItem(itemText + "." + i);
>
> System.out.println("\ncildDescendant index: "
> +
> itemSelected.getChildIndex(childDescendant));
> childDescendant.addItem("");
> }
>
> // Remove the temporary item when we
> finish loading
> itemSelected.getChild(0).remove();
>
> // Reopen the item
> itemSelected.setState(true, false);
> }
> }
> });
>
> Please help me with this problem, I'd appreciate it.
> junior
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