Bug 22274 [DND] Navigator should not sync selection with editor on drag
If I have two resources A and B open in their editors, and I try to drag A into B from the navigator view, I cannot. The navigator will flip the active active editor to A, making it impossible to drop on B. It is possible to avoid this by checking the dragsourceevent.doit value during the dragStart callback, and storing this value until the drag finished callback has occurred. If it is true, then a native drag is about to start. The mousedown or selection event should come after the dragStart event, and "Link navigator selection to active Editor" can be suppressed.
bundles/org.eclipse.ui.views/src/org/eclipse/ui/views/navigator/ResourceNavigator.java
/** 
	 * Settings constant for working set (value <code>ResourceWorkingSetFilter.STORE_WORKING_SET</code>).
	 */
	private static final String STORE_WORKING_SET = "ResourceWorkingSetFilter.STORE_WORKING_SET"; 
	
	/**
	 * @deprecated No longer used but preserved to avoid an api change.
	 */
	public static final String NAVIGATOR_VIEW_HELP_ID =
		INavigatorHelpContextIds.RESOURCE_VIEW;
	
	private static final String TAG_SORTER = "sorter"; 
	private static final String TAG_FILTERS = "filters"; 
	private static final String TAG_FILTER = "filter"; 
	private static final String TAG_SELECTION = "selection"; 
	private static final String TAG_EXPANDED = "expanded"; 
	private static final String TAG_ELEMENT = "element"; 
	private static final String TAG_IS_ENABLED = "isEnabled"; 
	private static final String TAG_PATH = "path"; 
	private static final String TAG_CURRENT_FRAME = "currentFrame"; 
	private IPartListener partListener = new IPartListener() {
		public void partActivated(IWorkbenchPart part) {
			if (part instanceof IEditorPart)
				editorActivated((IEditorPart) part);
		}
		public void partBroughtToTop(IWorkbenchPart part) {
		}
		public void partClosed(IWorkbenchPart part) {
		}
		public void partDeactivated(IWorkbenchPart part) {