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/*******************************************************************************
* Copyright (c) 2012 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.tests.edit;
import static com.google.common.collect.Iterables.filter;
import static com.google.common.collect.Iterables.find;
import static com.google.common.collect.Lists.newArrayList;
import com.google.common.base.Objects;
import com.google.common.base.Predicate;
import java.io.IOException;
import java.util.Collection;
import java.util.List;
import org.eclipse.emf.common.notify.Notifier;
import org.eclipse.emf.compare.Comparison;
import org.eclipse.emf.compare.EMFCompare;
import org.eclipse.emf.compare.Match;
import org.eclipse.emf.compare.ReferenceChange;
import org.eclipse.emf.compare.provider.CompareItemProviderAdapterFactory;
import org.eclipse.emf.compare.provider.spec.CompareItemProviderAdapterFactorySpec;
import org.eclipse.emf.compare.scope.DefaultComparisonScope;
import org.eclipse.emf.compare.scope.IComparisonScope;
import org.eclipse.emf.compare.tests.edit.data.ResourceScopeProvider;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.edit.provider.ITreeItemContentProvider;
import org.junit.Before;
/**
* @author <a href="mailto:mikael.barbero@obeo.fr">Mikael Barbero</a>
*/
public class AbstractTestCompareItemProviderAdapter {
protected CompareItemProviderAdapterFactory compareItemProviderAdapterFactory;
@Before
public void before() throws IOException {
compareItemProviderAdapterFactory = new CompareItemProviderAdapterFactorySpec();
}
/**
* @return the comparison
* @throws IOException
*/
protected static Comparison getComparison(ResourceScopeProvider scopeProvider) throws IOException {
final IComparisonScope scope = new DefaultComparisonScope(scopeProvider.getLeft(), scopeProvider
.getRight(), scopeProvider.getOrigin());
return EMFCompare.builder().build().compare(scope);
}
protected Match getMatchWithFeatureValue(Collection<?> c, final String featureName, final Object value) {
Iterable<Match> matches = filter(c, Match.class);
Predicate<Match> predicate = hasFeatureValue(featureName, value);
return find(matches, predicate);
}
protected ReferenceChange getReferenceChangeWithFeatureValue(Collection<?> c, final String featureName,
final Object value) {
Iterable<ReferenceChange> matches = filter(c, ReferenceChange.class);
Predicate<ReferenceChange> predicate = new Predicate<ReferenceChange>() {
public boolean apply(ReferenceChange referenceChange) {
EObject referenceChangeValue = referenceChange.getValue();
if (referenceChangeValue != null) {
return Objects.equal(eGet(referenceChangeValue, featureName), value);
}
return false;
}
};
return find(matches, predicate);
}
protected Predicate<Match> hasFeatureValue(final String featureName, final Object value) {
Predicate<Match> predicate = new Predicate<Match>() {
public boolean apply(Match match) {
final boolean ret;
final EObject left = match.getLeft();
final EObject right = match.getRight();
final EObject origin = match.getOrigin();
if (left != null) {
ret = Objects.equal(value, eGet(left, featureName));
} else if (right != null) {
ret = Objects.equal(value, eGet(right, featureName));
} else if (origin != null) {
ret = Objects.equal(value, eGet(origin, featureName));
} else {
ret = false;
}
return ret;
}
};
return predicate;
}
protected Object eGet(EObject eObject, String featureName) {
EStructuralFeature eStructuralFeature = eObject.eClass().getEStructuralFeature(featureName);
return eObject.eGet(eStructuralFeature);
}
protected List<Notifier> eAllChildren(Notifier notifier) {
List<Notifier> ret = newArrayList();
ITreeItemContentProvider contentProvider = adaptAsITreeItemContentProvider(notifier);
Iterable<Notifier> children = filter(contentProvider.getChildren(notifier), Notifier.class);
for (Notifier child : children) {
ret.add(child);
ret.addAll(eAllChildren(child));
}
return ret;
}
protected ITreeItemContentProvider adaptAsITreeItemContentProvider(Notifier notifier) {
ITreeItemContentProvider contentProvider = (ITreeItemContentProvider)compareItemProviderAdapterFactory
.adapt(notifier, ITreeItemContentProvider.class);
return contentProvider;
}
}
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