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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
* Christian W. Damus (CEA) - bug 429826
* Eike Stepper (CEA) - bug 466520
*
*****************************************************************************/
package org.eclipse.papyrus.cdo.core.resource;
import java.util.Set;
import org.eclipse.emf.cdo.CDOObject;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.edit.domain.EditingDomain;
import org.eclipse.papyrus.cdo.internal.core.CDOUtils;
import org.eclipse.papyrus.infra.core.resource.AbstractReadOnlyHandler;
import org.eclipse.papyrus.infra.core.resource.ReadOnlyAxis;
import com.google.common.base.Optional;
/**
* The CDO read handler is permission-based.
*/
public class CDOReadOnlyHandler extends AbstractReadOnlyHandler {
public CDOReadOnlyHandler(EditingDomain editingDomain) {
super(editingDomain);
}
@Override
public Optional<Boolean> anyReadOnly(Set<ReadOnlyAxis> axes, URI[] uris) {
Optional<Boolean> result = Optional.absent();
if (axes.contains(ReadOnlyAxis.PERMISSION) && (uris.length > 0) && CDOUtils.isCDOEditingDomain(getEditingDomain())) {
for (int i = 0; !result.or(Boolean.FALSE) && (i < uris.length); i++) {
// if it's a cdo:// URI, then I have a definitive answer
if (CDOUtils.isCDOURI(uris[i])) {
result = Optional.of(isReadOnly(uris[i]));
}
}
}
return result;
}
protected boolean isReadOnly(URI uri) {
boolean result = false;
Resource resource = getEditingDomain().getResourceSet().getResource(uri.trimFragment(), false);
if (resource instanceof CDOObject) {
result = CDOUtils.isReadOnly((CDOObject) resource);
}
return result;
}
@Override
public Optional<Boolean> isReadOnly(Set<ReadOnlyAxis> axes, EObject eObject) {
Optional<Boolean> result = Optional.absent();
if (axes.contains(ReadOnlyAxis.PERMISSION)) {
Resource resource = eObject.eResource();
if ((resource == null) || CDOUtils.isCDOURI(resource.getURI())) {
CDOObject cdo = CDOUtils.getCDOObject(eObject);
if (cdo != null) {
// I have a definitive answer for CDO objects
result = Optional.of(CDOUtils.isReadOnly(cdo));
}
}
}
return result;
}
@Override
public Optional<Boolean> makeWritable(Set<ReadOnlyAxis> axes, URI[] uris) {
// CDO requires the administrative UI to edit user permissions
return Optional.absent();
}
@Override
public Optional<Boolean> makeWritable(Set<ReadOnlyAxis> axes, EObject eObject) {
// CDO requires the administrative UI to edit user permissions
return Optional.absent();
}
}
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