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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.ide.ui.internal.actions.group;
import org.eclipse.emf.compare.Comparison;
/**
* Instances of this class will be used by EMF Compare in order to provide difference grouping facilities to
* the structural differences view.
*
* @author <a href="mailto:laurent.goubet@obeo.fr">Laurent Goubet</a>
*/
public interface DifferenceGroupProvider {
/**
* This will be called internally by the grouping actions in order to determine how the differences should
* be grouped in the structural view.
*
* @param comparison
* The comparison which is to be displayed in the structural view. By default, its containment
* tree will be displayed.
* @return The collection of difference groups that are to be displayed in the structural viewer. An empty
* group will not be displayed at all. If {@code null}, we'll fall back to the default behavior.
*/
Iterable<? extends DifferenceGroup> getGroups(Comparison comparison);
}
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