Re: CellTree - which nodes are open or closed on it?

It's not a good solution, but when you open a tree node with setChildOpen(), the method return the Child TreeNode :

public TreeNode setChildOpen(int index, boolean open, boolean fireEvents) {

      assertNotDestroyed();

      checkChildBounds(index);

      CellTreeNodeView<?> child = nodeView.getChildNode(index);

      return child.setOpen(open, fireEvents) ? child.treeNode : null;

}

The setOpen() return True only when the TreeNode is not a leaf and is closed, ans you ask to open the node.

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