/*******************************************************************************
* Copyright (c) 2009, 2015 IBM Corporation and others.
* 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:
* IBM Corporation - initial API and implementation
* Lars Vogel <Lars.Vogel@vogella.com> - Bug 472654
******************************************************************************/
package org.eclipse.e4.ui.internal.workbench;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.WeakHashMap;
import org.eclipse.e4.ui.model.application.MApplicationElement;
import org.eclipse.e4.ui.model.application.ui.menu.MMenuFactory;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EClassifier;
import org.eclipse.emf.ecore.EFactory;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EcoreFactory;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.emf.ecore.xmi.XMLHelper;
import org.eclipse.emf.ecore.xmi.impl.XMIHelperImpl;
import org.eclipse.emf.ecore.xmi.impl.XMIResourceImpl;
public class E4XMIResource extends XMIResourceImpl {
private Map<EObject, String> objectMap = new WeakHashMap<>();
private Set<String> knownIds = new HashSet<>();
public E4XMIResource() {
}
public E4XMIResource(URI uri) {
super(uri);
}
public void setInternalId(EObject object, String id) {
objectMap.put(object, id);
knownIds.add(id);
}
public String getInternalId(EObject object) {
return objectMap.get(object);
}
@Override
protected boolean useIDs() {
return true;
}
private String createId() {
return EcoreUtil.generateUUID();
}
private String getUniqueId() {
String id = createId();
while (knownIds.contains(id)) {
id = createId();
}
return id;
}
@Override
public void setID(EObject eObject, String id) {
if (id != null) {
String internalId = objectMap.get(eObject);
if (internalId != null) {
super.setID(eObject, internalId);
}
objectMap.put(eObject, id);
knownIds.add(id);
}
super.setID(eObject, id);
}
@Override
public String getID(EObject eObject) {
if (eObject instanceof Entry<?, ?>) {
return null;
}
String id = super.getID(eObject);
if (id != null) {
return id;
}
id = objectMap.get(eObject);
if (id != null) {
return id;
}
id = getUniqueId();
setID(eObject, id);
return id;
}
/**
* Functional interface for creating objects
*/
private interface ObjectCreator {
MApplicationElement create();
}
static final Map<String, ObjectCreator> deprecatedTypeMappings = new HashMap<>();
static {
deprecatedTypeMappings.put("OpaqueMenu", new ObjectCreator() { //$NON-NLS-1$
@Override
public MApplicationElement create() {
return OpaqueElementUtil.createOpaqueMenu();
}
});
deprecatedTypeMappings.put("OpaqueMenuItem", new ObjectCreator() { //$NON-NLS-1$
@Override
public MApplicationElement create() {
return OpaqueElementUtil.createOpaqueMenuItem();
}
});
deprecatedTypeMappings.put("OpaqueMenuSeparator", new ObjectCreator() { //$NON-NLS-1$
@Override
public MApplicationElement create() {
return OpaqueElementUtil.createOpaqueMenuSeparator();
}
});
deprecatedTypeMappings.put("OpaqueToolItem", new ObjectCreator() { //$NON-NLS-1$
@Override
public MApplicationElement create() {
return OpaqueElementUtil.createOpaqueToolItem();
}
});
deprecatedTypeMappings.put("RenderedMenu", new ObjectCreator() { //$NON-NLS-1$
@Override
public MApplicationElement create() {
return RenderedElementUtil.createRenderedMenu();
}
});
deprecatedTypeMappings.put("RenderedMenuItem", new ObjectCreator() { //$NON-NLS-1$
@Override
public MApplicationElement create() {
return RenderedElementUtil.createRenderedMenuItem();
}
});
deprecatedTypeMappings.put("RenderedToolBar", new ObjectCreator() { //$NON-NLS-1$
@Override
public MApplicationElement create() {
return RenderedElementUtil.createRenderedToolBar();
}
});
}
@Override
protected XMLHelper createXMLHelper() {
// Handle mapping of deprecated types
return new XMIHelperImpl(this) {
@Override
public EObject createObject(EFactory eFactory, EClassifier type) {
if (MMenuFactory.INSTANCE == eFactory && type != null && type.getName() != null) {
final ObjectCreator objectCreator = deprecatedTypeMappings.get(type.getName());
if (objectCreator != null) {
return (EObject) objectCreator.create();
}
}
return super.createObject(eFactory, type);
}
@Override
public EClassifier getType(EFactory eFactory, String typeName) {
if (deprecatedTypeMappings.containsKey(typeName)) {
// need a temp instance of the now removed EClass so that
// createObject, above, can do it's work.
final EClass tempEClass = EcoreFactory.eINSTANCE.createEClass();
tempEClass.setName(typeName);
return tempEClass;
}
return super.getType(eFactory, typeName);
}
};
}
}