How to set selection for treeviewer without firing selectionChanged()?

Question

I am working on an eclipse RCP project. It has several views with TreeViewer and I use selectionChanged() method to handle selection events. However, at times I need to set selection programmatically.For this, in selectionChanged() method, I invoke setSelection() method of TreeViewer to set the desired selection. This method fires selectionChanged() method of all views thus resulting in cyclic calls to selectionChanged().

How can I select an item from the TreeViewer or StructuredViewer without firing selectionChanged() for other views?

Answer 1

Well, creating an event that triggers the Listener you're currently in is always a tricky situation. What I usually do is something along those lines:

Listener listener = new Listener()
{
    private boolean ignore = false;

    @Override
    public void handleEvent(Event e)
    {
        if(ignore)
            return;

        ignore = true;
        doPotentiallyCyclicStuff();
        ignore = false;
    }
};

It's not a very pretty solution, but it does work.

---

Looking forward to alternative solutions here, since this has been bothering me for a while now.