| /***************************************************************************** |
| * Copyright (c) 2013, 2017 CEA LIST 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: |
| * CEA LIST - Initial API and implementation |
| * Eike Stepper (CEA) - bug 466520 |
| *****************************************************************************/ |
| package org.eclipse.papyrus.cdo.internal.core; |
| |
| import java.util.Collection; |
| import java.util.List; |
| |
| import org.eclipse.emf.cdo.explorer.checkouts.CDOCheckout; |
| import org.eclipse.emf.ecore.resource.ResourceSet; |
| import org.eclipse.papyrus.cdo.core.IResourceSetDisposalApprover; |
| |
| import com.google.common.collect.Lists; |
| |
| /** |
| * This is the CompositeResourceSetDisposalApprover type. Enjoy. |
| */ |
| class CompositeResourceSetDisposalApprover |
| implements IResourceSetDisposalApprover { |
| |
| private final List<IResourceSetDisposalApprover> approvers = Lists |
| .newArrayListWithExpectedSize(1); |
| |
| CompositeResourceSetDisposalApprover() { |
| super(); |
| } |
| |
| @Override |
| public DisposeAction disposalRequested(CDOCheckout checkout, |
| Collection<ResourceSet> resourceSets) { |
| |
| DisposeAction result = DisposeAction.CLOSE; |
| |
| if (!resourceSets.isEmpty() && !approvers.isEmpty()) { |
| for (IResourceSetDisposalApprover next : approvers) { |
| DisposeAction action = wrapNull(next |
| .disposalRequested(checkout, resourceSets)); |
| |
| result = result.compareTo(action) > 0 |
| ? action |
| : result; |
| |
| if (result == DisposeAction.NONE) { |
| // no need to consult anyone else |
| break; |
| } |
| } |
| } |
| |
| return result; |
| } |
| |
| private DisposeAction wrapNull(DisposeAction action) { |
| return (action == null) |
| ? DisposeAction.NONE |
| : action; |
| } |
| |
| void addApprover(IResourceSetDisposalApprover approver) { |
| if (!approvers.contains(approver)) { |
| approvers.add(approver); |
| } |
| } |
| |
| void removeApprover(IResourceSetDisposalApprover approver) { |
| approvers.remove(approver); |
| } |
| } |