| /* |
| * Copyright (c) 2010, 2012 Eike Stepper (Berlin, Germany) 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: |
| * Martin Fluegge - initial API and implementation |
| * |
| */ |
| package org.eclipse.emf.cdo.dawn.examples.acore.diagram.edit.commands; |
| |
| import org.eclipse.emf.cdo.dawn.examples.acore.AClass; |
| import org.eclipse.emf.cdo.dawn.examples.acore.diagram.edit.policies.AcoreBaseItemSemanticEditPolicy; |
| |
| import org.eclipse.emf.ecore.EObject; |
| |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.gmf.runtime.common.core.command.CommandResult; |
| import org.eclipse.gmf.runtime.emf.type.core.commands.EditElementCommand; |
| import org.eclipse.gmf.runtime.emf.type.core.requests.CreateRelationshipRequest; |
| |
| /** |
| * @generated |
| */ |
| public class AClassCompositionsCreateCommand extends EditElementCommand |
| { |
| |
| /** |
| * @generated |
| */ |
| private final EObject source; |
| |
| /** |
| * @generated |
| */ |
| private final EObject target; |
| |
| /** |
| * @generated |
| */ |
| public AClassCompositionsCreateCommand(CreateRelationshipRequest request, EObject source, EObject target) |
| { |
| super(request.getLabel(), null, request); |
| this.source = source; |
| this.target = target; |
| } |
| |
| /** |
| * @generated |
| */ |
| @Override |
| public boolean canExecute() |
| { |
| if (source == null && target == null) |
| { |
| return false; |
| } |
| if (source != null && false == source instanceof AClass) |
| { |
| return false; |
| } |
| if (target != null && false == target instanceof AClass) |
| { |
| return false; |
| } |
| if (getSource() == null) |
| { |
| return true; // link creation is in progress; source is not defined yet |
| } |
| // target may be null here but it's possible to check constraint |
| return AcoreBaseItemSemanticEditPolicy.LinkConstraints.canCreateAClassCompositions_4005(getSource(), getTarget()); |
| } |
| |
| /** |
| * @generated |
| */ |
| @Override |
| protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info) throws ExecutionException |
| { |
| if (!canExecute()) |
| { |
| throw new ExecutionException("Invalid arguments in create link command"); //$NON-NLS-1$ |
| } |
| |
| if (getSource() != null && getTarget() != null) |
| { |
| getSource().getCompositions().add(getTarget()); |
| } |
| return CommandResult.newOKCommandResult(); |
| |
| } |
| |
| /** |
| * @generated |
| */ |
| @Override |
| protected void setElementToEdit(EObject element) |
| { |
| throw new UnsupportedOperationException(); |
| } |
| |
| /** |
| * @generated |
| */ |
| protected AClass getSource() |
| { |
| return (AClass)source; |
| } |
| |
| /** |
| * @generated |
| */ |
| protected AClass getTarget() |
| { |
| return (AClass)target; |
| } |
| } |