Question

I have a uitree structure and use MultipleSelectionNodes property actived. I always have two nodes selected. I need to fix the selection on one of them permanently while the other can change by mouse selection. How I can achieve that?

Answer 1

To ensure that a particular tree node is always selected, you can write a tree selection listener that will unconditionally select the desired tree node whenever the selection changes. This will have the effect of keeping any tree nodes permanently selected.

tree.addTreeSelectionListener(new TreeSelectionListener(){
    @Override
    public void valueChanged(TreeSelectionEvent e) {
        // set tree selection paths that include a path to your permanent nodes
    }
});

• How to Use Trees