| package org.eclipse.gmf.tooling.examples.linklf.diagram.providers; |
| |
| import java.util.Collection; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider; |
| import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart; |
| import org.eclipse.gmf.runtime.emf.type.core.ElementTypeRegistry; |
| import org.eclipse.gmf.runtime.emf.type.core.IElementType; |
| import org.eclipse.gmf.runtime.emf.ui.services.modelingassistant.ModelingAssistantProvider; |
| import org.eclipse.gmf.runtime.notation.Diagram; |
| import org.eclipse.gmf.tooling.examples.linklf.diagram.part.LinklfDiagramEditorPlugin; |
| import org.eclipse.gmf.tooling.examples.linklf.diagram.part.Messages; |
| import org.eclipse.jface.viewers.ILabelProvider; |
| import org.eclipse.jface.window.Window; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.ui.dialogs.ElementListSelectionDialog; |
| |
| /** |
| * @generated |
| */ |
| public class LinklfModelingAssistantProvider extends ModelingAssistantProvider { |
| |
| /** |
| * @generated |
| */ |
| public EObject selectExistingElementForSource(IAdaptable target, IElementType relationshipType) { |
| return selectExistingElement(target, getTypesForSource(target, relationshipType)); |
| } |
| |
| /** |
| * @generated |
| */ |
| public EObject selectExistingElementForTarget(IAdaptable source, IElementType relationshipType) { |
| return selectExistingElement(source, getTypesForTarget(source, relationshipType)); |
| } |
| |
| /** |
| * @generated |
| */ |
| protected EObject selectExistingElement(IAdaptable host, Collection types) { |
| if (types.isEmpty()) { |
| return null; |
| } |
| IGraphicalEditPart editPart = (IGraphicalEditPart) host.getAdapter(IGraphicalEditPart.class); |
| if (editPart == null) { |
| return null; |
| } |
| Diagram diagram = (Diagram) editPart.getRoot().getContents().getModel(); |
| HashSet<EObject> elements = new HashSet<EObject>(); |
| for (Iterator<EObject> it = diagram.getElement().eAllContents(); it.hasNext();) { |
| EObject element = it.next(); |
| if (isApplicableElement(element, types)) { |
| elements.add(element); |
| } |
| } |
| if (elements.isEmpty()) { |
| return null; |
| } |
| return selectElement((EObject[]) elements.toArray(new EObject[elements.size()])); |
| } |
| |
| /** |
| * @generated |
| */ |
| protected boolean isApplicableElement(EObject element, Collection types) { |
| IElementType type = ElementTypeRegistry.getInstance().getElementType(element); |
| return types.contains(type); |
| } |
| |
| /** |
| * @generated |
| */ |
| protected EObject selectElement(EObject[] elements) { |
| Shell shell = Display.getCurrent().getActiveShell(); |
| ILabelProvider labelProvider = new AdapterFactoryLabelProvider(LinklfDiagramEditorPlugin.getInstance().getItemProvidersAdapterFactory()); |
| ElementListSelectionDialog dialog = new ElementListSelectionDialog(shell, labelProvider); |
| dialog.setMessage(Messages.LinklfModelingAssistantProviderMessage); |
| dialog.setTitle(Messages.LinklfModelingAssistantProviderTitle); |
| dialog.setMultipleSelection(false); |
| dialog.setElements(elements); |
| EObject selected = null; |
| if (dialog.open() == Window.OK) { |
| selected = (EObject) dialog.getFirstResult(); |
| } |
| return selected; |
| } |
| |
| } |