| //------------------------------------------------------------------------------ |
| // Copyright (c) 2005, 2007 IBM Corporation and others. |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // which accompanies this distribution, and is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // Contributors: |
| // IBM Corporation - initial implementation |
| //------------------------------------------------------------------------------ |
| package org.eclipse.epf.diagram.add.edit.policies; |
| |
| import java.util.Collections; |
| import java.util.Iterator; |
| import org.eclipse.emf.ecore.EClass; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.emf.transaction.TransactionalEditingDomain; |
| import org.eclipse.gef.commands.Command; |
| import org.eclipse.gef.commands.CompoundCommand; |
| import org.eclipse.gef.commands.UnexecutableCommand; |
| import org.eclipse.gef.requests.ReconnectRequest; |
| import org.eclipse.gmf.runtime.common.core.command.ICommand; |
| import org.eclipse.gmf.runtime.diagram.core.commands.DeleteCommand; |
| import org.eclipse.gmf.runtime.diagram.core.util.ViewUtil; |
| import org.eclipse.gmf.runtime.diagram.ui.commands.CommandProxy; |
| import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy; |
| import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart; |
| import org.eclipse.gmf.runtime.diagram.ui.editpolicies.SemanticEditPolicy; |
| import org.eclipse.gmf.runtime.diagram.ui.requests.EditCommandRequestWrapper; |
| import org.eclipse.gmf.runtime.emf.commands.core.command.CompositeTransactionalCommand; |
| import org.eclipse.gmf.runtime.emf.type.core.ElementTypeRegistry; |
| import org.eclipse.gmf.runtime.emf.type.core.IEditHelperContext; |
| import org.eclipse.gmf.runtime.emf.type.core.IElementType; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.ConfigureRequest; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.CreateElementRequest; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.CreateRelationshipRequest; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyElementRequest; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyReferenceRequest; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyRequest; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.DuplicateElementsRequest; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.GetEditContextRequest; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.IEditCommandRequest; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.MoveRequest; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientReferenceRelationshipRequest; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientRelationshipRequest; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.SetRequest; |
| import org.eclipse.gmf.runtime.notation.Edge; |
| import org.eclipse.gmf.runtime.notation.View; |
| import org.eclipse.epf.diagram.add.edit.helpers.DiagramBaseEditHelper; |
| import org.eclipse.epf.diagram.add.part.DiagramVisualIDRegistry; |
| import org.eclipse.epf.diagram.model.Node; |
| import org.eclipse.gef.EditPart; |
| import org.eclipse.gef.Request; |
| |
| /** |
| * @generated |
| */ |
| public class DiagramBaseItemSemanticEditPolicy extends SemanticEditPolicy { |
| |
| /** |
| * Extended request data key to hold editpart visual id. |
| * |
| * @generated |
| */ |
| public static final String VISUAL_ID_KEY = "visual_id"; //$NON-NLS-1$ |
| |
| /** |
| * Add visual id of edited editpart to extended data of the request |
| * so command switch can decide what kind of diagram element is being edited. |
| * It is done in those cases when it's not possible to deduce diagram |
| * element kind from domain element. |
| * |
| * @generated |
| */ |
| public Command getCommand(Request request) { |
| if (request instanceof ReconnectRequest) { |
| Object view = ((ReconnectRequest) request).getConnectionEditPart() |
| .getModel(); |
| if (view instanceof View) { |
| Integer id = new Integer(DiagramVisualIDRegistry |
| .getVisualID((View) view)); |
| request.getExtendedData().put(VISUAL_ID_KEY, id); |
| } |
| } |
| return super.getCommand(request); |
| } |
| |
| /** |
| * Returns visual id from request parameters. |
| * |
| * @generated |
| */ |
| protected int getVisualID(IEditCommandRequest request) { |
| Object id = request.getParameter(VISUAL_ID_KEY); |
| return id instanceof Integer ? ((Integer) id).intValue() : -1; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Command getSemanticCommand(IEditCommandRequest request) { |
| IEditCommandRequest completedRequest = completeRequest(request); |
| Object editHelperContext = completedRequest.getEditHelperContext(); |
| if (editHelperContext instanceof View |
| || (editHelperContext instanceof IEditHelperContext && ((IEditHelperContext) editHelperContext) |
| .getEObject() instanceof View)) { |
| // no semantic commands are provided for pure design elements |
| return null; |
| } |
| if (editHelperContext == null) { |
| editHelperContext = ViewUtil |
| .resolveSemanticElement((View) getHost().getModel()); |
| } |
| IElementType elementType = ElementTypeRegistry.getInstance() |
| .getElementType(editHelperContext); |
| if (elementType == ElementTypeRegistry.getInstance().getType( |
| "org.eclipse.gmf.runtime.emf.type.core.default")) { //$NON-NLS-1$ |
| elementType = null; |
| } |
| Command epCommand = getSemanticCommandSwitch(completedRequest); |
| if (epCommand != null) { |
| ICommand command = epCommand instanceof ICommandProxy ? ((ICommandProxy) epCommand) |
| .getICommand() |
| : new CommandProxy(epCommand); |
| completedRequest.setParameter( |
| DiagramBaseEditHelper.EDIT_POLICY_COMMAND, command); |
| } |
| Command ehCommand = null; |
| if (elementType != null) { |
| ICommand command = elementType.getEditCommand(completedRequest); |
| if (command != null) { |
| if (!(command instanceof CompositeTransactionalCommand)) { |
| TransactionalEditingDomain editingDomain = ((IGraphicalEditPart) getHost()) |
| .getEditingDomain(); |
| command = new CompositeTransactionalCommand(editingDomain, |
| null).compose(command); |
| } |
| ehCommand = new ICommandProxy(command); |
| } |
| } |
| boolean shouldProceed = true; |
| if (completedRequest instanceof DestroyRequest) { |
| shouldProceed = shouldProceed((DestroyRequest) completedRequest); |
| } |
| if (shouldProceed) { |
| if (completedRequest instanceof DestroyRequest) { |
| TransactionalEditingDomain editingDomain = ((IGraphicalEditPart) getHost()) |
| .getEditingDomain(); |
| Command deleteViewCommand = new ICommandProxy( |
| new DeleteCommand(editingDomain, (View) getHost() |
| .getModel())); |
| ehCommand = ehCommand == null ? deleteViewCommand : ehCommand |
| .chain(deleteViewCommand); |
| } |
| return ehCommand; |
| } |
| return null; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Command getSemanticCommandSwitch(IEditCommandRequest req) { |
| if (req instanceof CreateRelationshipRequest) { |
| return getCreateRelationshipCommand((CreateRelationshipRequest) req); |
| } else if (req instanceof CreateElementRequest) { |
| return getCreateCommand((CreateElementRequest) req); |
| } else if (req instanceof ConfigureRequest) { |
| return getConfigureCommand((ConfigureRequest) req); |
| } else if (req instanceof DestroyElementRequest) { |
| return getDestroyElementCommand((DestroyElementRequest) req); |
| } else if (req instanceof DestroyReferenceRequest) { |
| return getDestroyReferenceCommand((DestroyReferenceRequest) req); |
| } else if (req instanceof DuplicateElementsRequest) { |
| return getDuplicateCommand((DuplicateElementsRequest) req); |
| } else if (req instanceof GetEditContextRequest) { |
| return getEditContextCommand((GetEditContextRequest) req); |
| } else if (req instanceof MoveRequest) { |
| return getMoveCommand((MoveRequest) req); |
| } else if (req instanceof ReorientReferenceRelationshipRequest) { |
| return getReorientReferenceRelationshipCommand((ReorientReferenceRelationshipRequest) req); |
| } else if (req instanceof ReorientRelationshipRequest) { |
| return getReorientRelationshipCommand((ReorientRelationshipRequest) req); |
| } else if (req instanceof SetRequest) { |
| return getSetCommand((SetRequest) req); |
| } |
| return null; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Command getConfigureCommand(ConfigureRequest req) { |
| return null; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Command getCreateRelationshipCommand(CreateRelationshipRequest req) { |
| return null; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Command getCreateCommand(CreateElementRequest req) { |
| return null; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Command getSetCommand(SetRequest req) { |
| return null; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Command getEditContextCommand(GetEditContextRequest req) { |
| return null; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Command getDestroyElementCommand(DestroyElementRequest req) { |
| return null; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Command getDestroyReferenceCommand(DestroyReferenceRequest req) { |
| return null; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Command getDuplicateCommand(DuplicateElementsRequest req) { |
| return null; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Command getMoveCommand(MoveRequest req) { |
| return null; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Command getReorientReferenceRelationshipCommand( |
| ReorientReferenceRelationshipRequest req) { |
| return UnexecutableCommand.INSTANCE; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Command getReorientRelationshipCommand( |
| ReorientRelationshipRequest req) { |
| return UnexecutableCommand.INSTANCE; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected Command getMSLWrapper(ICommand cmd) { |
| return new ICommandProxy(cmd); |
| } |
| |
| /** |
| * @generated |
| */ |
| protected EObject getSemanticElement() { |
| return ViewUtil.resolveSemanticElement((View) getHost().getModel()); |
| } |
| |
| /** |
| * Finds container element for the new relationship of the specified type. |
| * Default implementation goes up by containment hierarchy starting from |
| * the specified element and returns the first element that is instance of |
| * the specified container class. |
| * |
| * @generated |
| */ |
| protected EObject getRelationshipContainer(Object uelement, |
| EClass containerClass, IElementType relationshipType) { |
| if (uelement instanceof EObject) { |
| EObject element = (EObject) uelement; |
| for (; element != null; element = element.eContainer()) { |
| if (containerClass.isSuperTypeOf(element.eClass())) { |
| return element; |
| } |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Returns editing domain from the host edit part. |
| * |
| * @generated |
| */ |
| protected TransactionalEditingDomain getEditingDomain() { |
| return ((IGraphicalEditPart) getHost()).getEditingDomain(); |
| } |
| |
| /** |
| * Creates command to destroy the link. |
| * |
| * @generated |
| */ |
| protected Command getDestroyElementCommand(View view, boolean confirm) { |
| EditPart editPart = (EditPart) getHost().getViewer() |
| .getEditPartRegistry().get(view); |
| DestroyElementRequest request = new DestroyElementRequest( |
| getEditingDomain(), confirm); |
| return editPart.getCommand(new EditCommandRequestWrapper(request, |
| Collections.EMPTY_MAP)); |
| } |
| |
| /** |
| * Creates commands to destroy all host incoming and outgoing links. |
| * |
| * @generated |
| */ |
| protected CompoundCommand getDestroyEdgesCommand(boolean confirm) { |
| CompoundCommand cmd = new CompoundCommand(); |
| View view = (View) getHost().getModel(); |
| for (Iterator it = view.getSourceEdges().iterator(); it.hasNext();) { |
| cmd.add(getDestroyElementCommand((Edge) it.next(), confirm)); |
| } |
| for (Iterator it = view.getTargetEdges().iterator(); it.hasNext();) { |
| cmd.add(getDestroyElementCommand((Edge) it.next(), confirm)); |
| } |
| return cmd; |
| } |
| |
| /** |
| * @generated |
| */ |
| public static class LinkConstraints { |
| |
| /** |
| * @generated |
| */ |
| public static boolean canCreateLink_3001(Node container, Node source, |
| Node target) { |
| return canExistLink_3001(container, source, target); |
| } |
| |
| /** |
| * @generated |
| */ |
| public static boolean canExistLink_3001(Node container, Node source, |
| Node target) { |
| return true; |
| } |
| |
| } |
| |
| } |