/*******************************************************************************
* Copyright (c) 2012, 2016 Obeo.
* 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:
* Obeo - initial API and implementation
*******************************************************************************/
package org.eclipse.emf.compare.rcp.ui.internal.structuremergeviewer.groups.impl;
import static org.eclipse.emf.compare.utils.EMFComparePredicates.ofKind;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.Lists;
import java.util.Collection;
import org.eclipse.emf.compare.Comparison;
import org.eclipse.emf.compare.DifferenceKind;
import org.eclipse.emf.compare.rcp.ui.internal.EMFCompareRCPUIMessages;
import org.eclipse.emf.compare.rcp.ui.structuremergeviewer.groups.AbstractDifferenceGroupProvider;
import org.eclipse.emf.compare.rcp.ui.structuremergeviewer.groups.IDifferenceGroup;
/**
* This implementation of a
* {@link org.eclipse.emf.compare.rcp.ui.structuremergeviewer.groups.IDifferenceGroupProvider} will be used to
* group the differences by their {@link DifferenceKind kind} : additions, deletions, changes and moves.
*
* @author <a href="mailto:laurent.goubet@obeo.fr">Laurent Goubet</a>
* @since 4.0
*/
public class KindGroupProvider extends AbstractDifferenceGroupProvider {
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.compare.rcp.ui.internal.structuremergeviewer.groups.impl.AbstractBuildingDifferenceGroupProvider#buildGroups(org.eclipse.emf.compare.Comparison)
*/
@Override
protected Collection<? extends IDifferenceGroup> buildGroups(Comparison comparison2) {
final BasicDifferenceGroupImpl additions = new BasicDifferenceGroupImpl(getComparison(),
ofKind(DifferenceKind.ADD),
EMFCompareRCPUIMessages.getString("KindGroupProvider.addition.label"), //$NON-NLS-1$
getCrossReferenceAdapter());
additions.buildSubTree();
final BasicDifferenceGroupImpl deletions = new BasicDifferenceGroupImpl(getComparison(),
ofKind(DifferenceKind.DELETE),
EMFCompareRCPUIMessages.getString("KindGroupProvider.deletion.label"), //$NON-NLS-1$
getCrossReferenceAdapter());
deletions.buildSubTree();
final BasicDifferenceGroupImpl changes = new BasicDifferenceGroupImpl(getComparison(),
ofKind(DifferenceKind.CHANGE),
EMFCompareRCPUIMessages.getString("KindGroupProvider.change.label"), //$NON-NLS-1$
getCrossReferenceAdapter());
changes.buildSubTree();
final BasicDifferenceGroupImpl moves = new BasicDifferenceGroupImpl(getComparison(),
ofKind(DifferenceKind.MOVE),
EMFCompareRCPUIMessages.getString("KindGroupProvider.move.label"), //$NON-NLS-1$
getCrossReferenceAdapter());
moves.buildSubTree();
Collection<IDifferenceGroup> groups = Lists.newArrayList();
if (!additions.getChildren().isEmpty()) {
groups.add(additions);
}
if (!deletions.getChildren().isEmpty()) {
groups.add(deletions);
}
if (!changes.getChildren().isEmpty()) {
groups.add(changes);
}
if (!moves.getChildren().isEmpty()) {
groups.add(moves);
}
return ImmutableList.copyOf(groups);
}
}