Bug 94456 [Undo] - Resource Navigator not showing workspace undo actions
The Resource Navigator is not showing the workspace undo actions. Package Explorer is correctly working. Need to look at the difference in the way the action handlers are set up.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/navigator/ResourceNavigator.java
*/
    protected void handleKeyReleased(KeyEvent event) {
    }
    /* (non-Javadoc)
     * Method declared on IViewPart.
     */
    public void init(IViewSite site, IMemento memento) throws PartInitException {
        super.init(site, memento);
        this.memento = memento;
    }
    /**
     * Adds drag and drop support to the navigator.
     * 
     * @since 2.0
     */
    protected void initDragAndDrop() {
        int ops = DND.DROP_COPY | DND.DROP_MOVE;
        Transfer[] transfers = new Transfer[] {
                LocalSelectionTransfer.getInstance(),
                ResourceTransfer.getInstance(), FileTransfer.getInstance(),
                PluginTransfer.getInstance() };
        TreeViewer viewer = getTreeViewer();
        viewer.addDragSupport(ops, transfers, new NavigatorDragAdapter(viewer));
        NavigatorDropAdapter adapter = new NavigatorDropAdapter(viewer);
        adapter.setFeedbackEnabled(false);
        viewer.addDropSupport(ops | DND.DROP_DEFAULT, transfers, adapter);
        dragDetectListener = new Listener() {
            public void handleEvent(Event event) {
                dragDetected = true;
            }