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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.provider.spec;
import static com.google.common.collect.Iterables.concat;
import static com.google.common.collect.Iterables.filter;
import static com.google.common.collect.Iterables.isEmpty;
import com.google.common.base.Predicate;
import com.google.common.collect.ImmutableList;
import java.util.Collection;
import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.compare.Comparison;
import org.eclipse.emf.compare.Match;
import org.eclipse.emf.compare.provider.ComparisonItemProvider;
import org.eclipse.emf.compare.provider.IItemStyledLabelProvider;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.edit.provider.IEditingDomainItemProvider;
import org.eclipse.jface.viewers.StyledString;
/**
* @author <a href="mailto:mikael.barbero@obeo.fr">Mikael Barbero</a>
*/
public class ComparisonItemProviderSpec extends ComparisonItemProvider implements IItemStyledLabelProvider {
/**
* @param adapterFactory
*/
public ComparisonItemProviderSpec(AdapterFactory adapterFactory) {
super(adapterFactory);
}
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.edit.provider.ItemProviderAdapter#getChildren(java.lang.Object)
*/
@Override
public Collection<?> getChildren(Object object) {
Comparison comparison = (Comparison)object;
return ImmutableList.copyOf(getChildrenIterable(comparison));
}
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.edit.provider.ItemProviderAdapter#hasChildren(java.lang.Object)
*/
@Override
public boolean hasChildren(Object object) {
Comparison comparison = (Comparison)object;
return !isEmpty(getChildrenIterable(comparison));
}
private Iterable<EObject> getChildrenIterable(Comparison comparison) {
Iterable<Match> match = getNonEmptyMatches(comparison);
return concat(match, comparison.getMatchedResources());
}
private Iterable<Match> getNonEmptyMatches(Comparison comparison) {
Iterable<Match> match = filter(comparison.getMatches(), new Predicate<Match>() {
public boolean apply(Match input) {
final boolean ret;
IEditingDomainItemProvider editingDomainItemProvider = (IEditingDomainItemProvider)adapterFactory
.adapt(input, IEditingDomainItemProvider.class);
if (editingDomainItemProvider instanceof MatchItemProviderSpec) {
ret = !isEmpty(((MatchItemProviderSpec)editingDomainItemProvider)
.getChildrenIterable(input));
} else if (editingDomainItemProvider != null) {
ret = !editingDomainItemProvider.getChildren(input).isEmpty();
} else {
ret = false;
}
return ret;
}
});
return match;
}
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.compare.provider.IItemStyledLabelProvider#getStyledText(java.lang.Object)
*/
public StyledString getStyledText(Object object) {
return new StyledString(getText(object));
}
}
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