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
* Used as the name for the current frame. 
	 */
	String getFrameName(Object element) {
		if (element instanceof IResource) {
			return ((IResource) element).getName();
		} else {
			return ((ILabelProvider) getTreeViewer().getLabelProvider()).getText(element);
		}
	}
	/**
	 * Returns the tool tip text for the given element.
	 * Used as the tool tip text for the current frame, and for the view title tooltip.
	 */
	String getFrameToolTipText(Object element) {
		if (element instanceof IResource) {
			IPath path = ((IResource) element).getFullPath();
			if (path.isRoot()) {
				return ResourceNavigatorMessages.getString("ResourceManager.toolTip"); 
			} else {
				return path.makeRelative().toString();
			}
		} else {
			return ((ILabelProvider) getTreeViewer().getLabelProvider()).getText(element);
		}
	}
	/**
	 * Handles an open event from the viewer.
	 * Opens an editor on the selected file.
	 * 
	 * @param event the open event