Bug 312540 [LinkedResources] Copy resource in Navigator and Project Explorer always shows dialog
N20100511-2000. When copying an IFile from one to another folder in the Navigator or Project Explorer, I always get the dialog no matter how I've set the preferences on the 'Linked Resources' page (even if I disable linked resources).
bundles/org.eclipse.ui.navigator.resources/src/org/eclipse/ui/navigator/resources/ResourceDropAdapterAssistant.java
.println("ResourceDropAdapterAssistant.validateDrop validating MOVE."); 
						}
						operation = new MoveFilesAndFoldersOperation(getShell());
					}
					if (operation.validateDestination(destination, selectedResources) != null) {
						operation.setVirtualFolders(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];
			}
			CopyFilesAndFoldersOperation copyOperation = new CopyFilesAndFoldersOperation(
					getShell());
			message = copyOperation.validateImportDestination(destination,
					sourceNames);
		}
		if (message != null) {
			return WorkbenchNavigatorPlugin.createErrorStatus(0, message, null);
		}
		return Status.OK_STATUS;
	}