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
* @return the action group
     */
    protected ResourceNavigatorActionGroup getActionGroup() {
        return actionGroup;
    }
    /**
     * Sets the action group.
     * 
     * @param actionGroup the action group
     */
    protected void setActionGroup(ResourceNavigatorActionGroup actionGroup) {
        this.actionGroup = actionGroup;
    }
    /*
     * @see IWorkbenchPart#getAdapter(Class)
     */
    public Object getAdapter(Class adapter) {
        if (adapter == IShowInSource.class) {
            return getShowInSource();
        }
        if (adapter == IShowInTarget.class) {
            return getShowInTarget();
        }
        return null;
    }
    /**
     * Returns the <code>IShowInSource</code> for this view.
     */
    protected IShowInSource getShowInSource() {
        return new IShowInSource() {