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UML2AdapterFactoryEditingDomain.java
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UML2AdapterFactoryEditingDomain.java
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/*
* Copyright (c) 2006, 2018 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v20.html
*
* Contributors:
* IBM - initial API and implementation
* Kenn Hussey - 535301
*
*/
package org.eclipse.uml2.common.edit.domain;
import java.util.ListIterator;
import java.util.Map;
import org.eclipse.emf.common.command.CommandStack;
import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.change.ChangeKind;
import org.eclipse.emf.ecore.change.FeatureChange;
import org.eclipse.emf.ecore.change.ListChange;
import org.eclipse.emf.ecore.change.impl.FeatureChangeImpl;
import org.eclipse.emf.ecore.change.impl.ListChangeImpl;
import org.eclipse.emf.ecore.change.util.ChangeRecorder;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.edit.domain.AdapterFactoryEditingDomain;
public class UML2AdapterFactoryEditingDomain
extends AdapterFactoryEditingDomain {
private static class UniqueListChangeImpl
extends ListChangeImpl {
@Override
public void apply(EList<Object> originalList) {
switch (getKind().getValue()) {
case ChangeKind.ADD :
if (index == -1) {
for (Object value : getValues()) {
if (!originalList.contains(value)) {
originalList.add(value);
}
}
} else {
EList<Object> values = getValues();
for (ListIterator<Object> v = values
.listIterator(values.size()); v.hasPrevious();) {
Object value = v.previous();
if (!originalList.contains(value)) {
originalList.add(index, value);
}
}
}
break;
case ChangeKind.REMOVE :
for (Object value : getValues()) {
originalList.remove(value);
}
break;
default :
super.apply(originalList);
}
}
@Override
public void applyAndReverse(EList<Object> originalList) {
switch (getKind().getValue()) {
case ChangeKind.ADD :
if (index == -1) {
index = originalList.size();
for (Object value : getValues()) {
if (!originalList.contains(value)) {
originalList.add(value);
}
}
} else {
EList<Object> values = getValues();
for (ListIterator<Object> v = values
.listIterator(values.size()); v.hasPrevious();) {
Object value = v.previous();
if (!originalList.contains(value)) {
originalList.add(index, value);
}
}
}
setKind(ChangeKind.REMOVE_LITERAL);
break;
case ChangeKind.REMOVE :
for (Object value : getValues()) {
originalList.remove(value);
}
setKind(ChangeKind.ADD_LITERAL);
break;
default :
super.applyAndReverse(originalList);
}
}
}
private static final class UniqueFeatureChangeImpl
extends FeatureChangeImpl {
protected UniqueFeatureChangeImpl(EStructuralFeature feature,
Object value, boolean isSet) {
super(feature, value, isSet);
}
@Override
protected ListChange createListChange(EList<ListChange> changesList,
ChangeKind kind, int index) {
if (getFeature().isUnique()) {
ListChange listChange = new UniqueListChangeImpl();
listChange.setKind(kind);
listChange.setIndex(index);
changesList.add(listChange);
return listChange;
} else {
return super.createListChange(changesList, kind, index);
}
}
}
protected ChangeRecorder changeRecorder = null;
public UML2AdapterFactoryEditingDomain(AdapterFactory adapterFactory,
CommandStack commandStack) {
super(adapterFactory, commandStack);
}
public UML2AdapterFactoryEditingDomain(AdapterFactory adapterFactory,
CommandStack commandStack,
Map<Resource, Boolean> resourceToReadOnlyMap) {
super(adapterFactory, commandStack, resourceToReadOnlyMap);
}
public UML2AdapterFactoryEditingDomain(AdapterFactory adapterFactory,
CommandStack commandStack, ResourceSet resourceSet) {
super(adapterFactory, commandStack, resourceSet);
}
protected ChangeRecorder createChangeRecorder() {
return new ChangeRecorder() {
private boolean featureIsUnique = false;
@Override
protected ListChange createListChange(
EList<ListChange> changesList, ChangeKind kind, int index) {
if (featureIsUnique) {
ListChange listChange = new UniqueListChangeImpl();
listChange.setKind(kind);
listChange.setIndex(index);
changesList.add(listChange);
return listChange;
} else {
return super.createListChange(changesList, kind, index);
}
}
@Override
protected void createRemoveListChange(EList<?> oldList,
EList<ListChange> changesList, Object newObject, int index) {
if (featureIsUnique) {
ListChange listChange = createListChange(changesList,
ChangeKind.REMOVE_LITERAL, index);
listChange.getValues().add(oldList.remove(index));
} else {
super.createRemoveListChange(oldList, changesList,
newObject, index);
}
}
@Override
protected void finalizeChange(FeatureChange change, EObject eObject) {
featureIsUnique = change.getFeature().isUnique();
super.finalizeChange(change, eObject);
}
@Override
protected FeatureChange createFeatureChange(EObject eObject,
EStructuralFeature eStructuralFeature, Object value,
boolean isSet) {
return new UniqueFeatureChangeImpl(eStructuralFeature, value,
isSet);
}
};
}
public ChangeRecorder getChangeRecorder() {
if (changeRecorder == null) {
changeRecorder = createChangeRecorder();
}
return changeRecorder;
}
}