Bug 296691 Change new Groups API to Virtual Resource API
If we decide that 'virtual' is the right naming for new resources concept, I will make the following changes. Add IResource#VIRTUAL flag to use in #create methods Add IResource#isVirtual indicating that a resource is virtual Remove IResource#isGroup Remove IFolder#createGroup
bundles/org.eclipse.ui.navigator.resources/src/org/eclipse/ui/navigator/resources/ResourceDropAdapterAssistant.java
if (aDropOperation == DND.DROP_COPY) {
						if (Policy.DEBUG_DND) {
							System.out
									.println("ResourceDropAdapterAssistant.validateDrop validating COPY."); 
						}
	
						operation = new CopyFilesAndFoldersOperation(getShell());
					} else {
						if (Policy.DEBUG_DND) {
							System.out
									.println("ResourceDropAdapterAssistant.validateDrop validating MOVE."); 
						}
						operation = new MoveFilesAndFoldersOperation(getShell());
					}
					if (operation.validateDestination(destination, selectedResources) != null) {
						operation.setCreateGroups(true);
						message = operation.validateDestination(destination, selectedResources);
					}
				}
			}
		} 
		else if (FileTransfer.getInstance().isSupportedType(transferType)) {
			String[] sourceNames = (String[]) FileTransfer.getInstance()
					.nativeToJava(transferType);
			if (sourceNames == null) {
				
				
				
				sourceNames = new String[0];
			}