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/*******************************************************************************
* Copyright (c) 2006, 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.diff.internal.merge.impl;
import java.util.List;
import org.eclipse.emf.compare.EMFComparePlugin;
import org.eclipse.emf.compare.FactoryException;
import org.eclipse.emf.compare.diff.merge.DefaultMerger;
import org.eclipse.emf.compare.diff.metamodel.MoveModelElement;
import org.eclipse.emf.compare.util.EFactory;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.util.EcoreUtil;
/**
* Merger for a {@link MoveModelElement} operation.
*
* @author <a href="mailto:laurent.goubet@obeo.fr">Laurent Goubet</a>
*/
public class MoveModelElementMerger extends DefaultMerger {
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.compare.diff.merge.api.AbstractMerger#doApplyInOrigin()
*/
@SuppressWarnings("unchecked")
@Override
public void doApplyInOrigin() {
final MoveModelElement theDiff = (MoveModelElement)this.diff;
final EObject leftTarget = theDiff.getLeftTarget();
final EObject leftElement = theDiff.getLeftElement();
final EReference ref = theDiff.getRightElement().eContainmentFeature();
if (ref != null) {
// ordering handling:
int index = -1;
final EObject rightElementParent = theDiff.getRightElement().eContainer();
final Object rightRefValue = rightElementParent.eGet(ref);
if (rightRefValue instanceof List) {
final List<Object> refRightValueList = (List<Object>)rightRefValue;
index = refRightValueList.indexOf(theDiff.getRightElement());
}
try {
// We'll store the element's ID because moving an element deletes its XMI ID
final String elementID = getXMIID(leftElement);
EcoreUtil.remove(leftElement);
EFactory.eAdd(leftTarget, ref.getName(), leftElement, index, true);
// Sets anew the element's ID
setXMIID(leftElement, elementID);
} catch (FactoryException e) {
EMFComparePlugin.log(e, true);
}
} else {
// shouldn't be here
assert false;
}
}
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.compare.diff.merge.api.AbstractMerger#doUndoInTarget()
*/
@SuppressWarnings("unchecked")
@Override
public void doUndoInTarget() {
final MoveModelElement theDiff = (MoveModelElement)this.diff;
final EObject rightTarget = theDiff.getRightTarget();
final EObject rightElement = theDiff.getRightElement();
final EReference ref = theDiff.getLeftElement().eContainmentFeature();
if (ref != null) {
// ordering handling:
int index = -1;
final EObject leftElementParent = theDiff.getLeftElement().eContainer();
final Object leftRefValue = leftElementParent.eGet(ref);
if (leftRefValue instanceof List) {
final List<Object> refLeftValueList = (List<Object>)leftRefValue;
index = refLeftValueList.indexOf(theDiff.getLeftElement());
}
try {
final String elementID = getXMIID(rightElement);
EcoreUtil.remove(rightElement);
EFactory.eAdd(rightTarget, ref.getName(), rightElement, index, true);
setXMIID(rightElement, elementID);
} catch (FactoryException e) {
EMFComparePlugin.log(e, true);
}
} else {
// shouldn't be here
assert false;
}
}
}
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