Bug 208910 [CommonNavigator] Drag and Drop in Project Explorer does not use LTK move
I20071101-2000 Drag and Drop of resources in the Navigator does not use the LTK aware move operations. The easiest implementation would probably be to get a MoveResourcesDescriptor and execute a PerformRefactoringOperation on it.
bundles/org.eclipse.ui.navigator.resources/src/org/eclipse/ui/navigator/resources/ResourceDropAdapterAssistant.java
target.refreshLocal(IResource.DEPTH_ONE, null);
			} catch (CoreException e) {
			}
		}
		return status;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.navigator.CommonDropAdapterAssistant#validatePluginTransferDrop(org.eclipse.jface.viewers.IStructuredSelection,
	 *      java.lang.Object)
	 */
	public IStatus validatePluginTransferDrop(
			IStructuredSelection aDragSelection, Object aDropTarget) {
		if (!(aDropTarget instanceof IResource)) {
			return WorkbenchNavigatorPlugin
					.createStatus(
							IStatus.INFO,
							0,
							WorkbenchNavigatorMessages.DropAdapter_targetMustBeResource,
							null);
		}
		IResource resource = (IResource) aDropTarget;
		if (!resource.isAccessible()) {
			return WorkbenchNavigatorPlugin
					.createErrorStatus(
							0,
							WorkbenchNavigatorMessages.DropAdapter_canNotDropIntoClosedProject,
							null);
		}