Deleting Nodes/Branch from Tree

[Hughes, Stan]

This may seem counter-productive to some, but, I need to be able to dynamically delete and rebuild a tree structure. The thing is, I need the data to always be real-time…   So, given the tree following:   A |  A1 |    A1.1 B   How do I, when the user clicks the A node, delete everything beneath it so that I can rebuild it?   I have tried various things, but, nothing seems to work. The only way I can see to do it is,                   HtmlTree tree = (HtmlTree) component;                 selectedNode = (TreeNodeBase) tree.getNode();                 selectedNode.getChildren().removeAll(selectedNode.getChildren());   But, this does not work. When the tree is rebuilt, the nodes seem to keep the state of the node that previously occupied that position. Here is what happens:  if the user selects A, then selects A1 (to expand them), and then collapses A by selecting it again, everything looks normal. But if he then selects A to expand it (again), the code is supposed to delete everything below A and rebuild the first level below A (like lazy loading). This appears to work also, but, A1, though it has been deleted and newly created, has the state of being expanded – forcing you to select it twice to expand it…   Is there some way to COMPLETELY remove everything below a node? Or, is my description not clear enough of what is going on?   Thanks for any help…