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/*******************************************************************************
* Copyright (c) 2012, 2013 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 com.google.common.base.Function;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import com.google.common.collect.Sets;
import java.util.Collection;
import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.compare.Conflict;
import org.eclipse.emf.compare.ConflictKind;
import org.eclipse.emf.compare.Diff;
import org.eclipse.emf.compare.Match;
import org.eclipse.emf.compare.ReferenceChange;
import org.eclipse.emf.compare.internal.EMFCompareEditMessages;
import org.eclipse.emf.compare.provider.ConflictItemProvider;
import org.eclipse.emf.compare.provider.IItemDescriptionProvider;
import org.eclipse.emf.compare.provider.IItemStyledLabelProvider;
import org.eclipse.emf.compare.provider.utils.ComposedStyledString;
import org.eclipse.emf.compare.provider.utils.IStyledString;
import org.eclipse.emf.compare.provider.utils.IStyledString.Style;
/**
* Specialized {@link ConflictItemProvider} returning nice output for {@link #getText(Object)} and
* {@link #getImage(Object)}.
*
* @author <a href="mailto:mikael.barbero@obeo.fr">Mikael Barbero</a>
*/
public class ConflictItemProviderSpec extends ConflictItemProvider implements IItemStyledLabelProvider, IItemDescriptionProvider {
/**
* Returns the sub diffs of a given diff.
*/
private static Function<Diff, Iterable<Diff>> getSubDiffs = new Function<Diff, Iterable<Diff>>() {
public Iterable<Diff> apply(Diff diff) {
if (diff instanceof ReferenceChange) {
Match match = diff.getMatch();
Match matchOfValue = diff.getMatch().getComparison().getMatch(
((ReferenceChange)diff).getValue());
if (!match.equals(matchOfValue) && match.getSubmatches().contains(matchOfValue)) {
final Iterable<Diff> subDiffs = matchOfValue.getAllDifferences();
return ImmutableSet.copyOf(subDiffs);
}
}
return ImmutableSet.of();
}
};
/**
* Constructs a ComparisonItemProviderSpec with the given factory.
*
* @param adapterFactory
* the factory given to the super constructor.
*/
public ConflictItemProviderSpec(AdapterFactory adapterFactory) {
super(adapterFactory);
}
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.compare.provider.ConflictItemProvider#getText(java.lang.Object)
*/
@Override
public String getText(Object object) {
return getStyledText(object).getString();
}
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.compare.provider.ConflictItemProvider#getImage(java.lang.Object)
*/
@Override
public Object getImage(Object object) {
if (((Conflict)object).getKind() == ConflictKind.PSEUDO) {
return overlayImage(object, getResourceLocator().getImage("full/obj16/PseudoConflict")); //$NON-NLS-1$
} else {
return overlayImage(object, getResourceLocator().getImage("full/obj16/Conflict")); //$NON-NLS-1$
}
}
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.edit.provider.ItemProviderAdapter#getChildren(java.lang.Object)
*/
@Override
public Collection<?> getChildren(Object object) {
Conflict conflict = (Conflict)object;
EList<Diff> differences = conflict.getDifferences();
Collection<Diff> filteredDifferences = Sets.newLinkedHashSet();
for (Diff diff : differences) {
boolean subdiff = false;
for (Diff diffParent : differences) {
if (!diff.equals(diffParent) && Iterables.contains(getSubDiffs.apply(diffParent), diff)) {
subdiff = true;
break;
}
}
if (!subdiff) {
filteredDifferences.add(diff);
}
}
return filteredDifferences;
}
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.compare.provider.IItemStyledLabelProvider#getStyledText(java.lang.Object)
*/
public IStyledString.IComposedStyledString getStyledText(Object object) {
Conflict conflict = (Conflict)object;
int size = conflict.getDifferences().size();
String kind = conflict.getKind().getName().toLowerCase();
ComposedStyledString ret = new ComposedStyledString(kind.substring(0, 1).toUpperCase()
+ kind.substring(1) + " " + EMFCompareEditMessages.getString("conflict")); //$NON-NLS-1$ //$NON-NLS-2$
ret.append(
" [" + size + " " + EMFCompareEditMessages.getString("difference"), Style.DECORATIONS_STYLER); //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$
if (size > 1) {
ret.append(EMFCompareEditMessages.getString("plural"), Style.DECORATIONS_STYLER); //$NON-NLS-1$
}
ret.append("]", Style.DECORATIONS_STYLER); //$NON-NLS-1$
return ret;
}
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.compare.provider.IItemDescriptionProvider#getDescription(java.lang.Object)
*/
public String getDescription(Object object) {
Conflict conflict = (Conflict)object;
int size = conflict.getDifferences().size() - 1;
String ret = conflict.getKind().getName() + " conflict with " + size + " other difference";
if (size > 1) {
ret += "s";
}
return ret;
}
}
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