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/*****************************************************************************
* 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);
}
}
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