/*******************************************************************************
* Copyright (c) 2011, 2014 Willink Transformations 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:
* E.D.Willink - initial API and implementation
*******************************************************************************/
package org.eclipse.ocl.xtext.markup.scoping;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.emf.common.notify.Notifier;
import org.eclipse.emf.common.util.TreeIterator;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.ocl.xtext.markupcs.FigureElement;
import org.eclipse.ocl.xtext.markupcs.MarkupPackage;
import org.eclipse.xtext.resource.EObjectDescription;
import org.eclipse.xtext.resource.IEObjectDescription;
import org.eclipse.xtext.scoping.IScope;
import org.eclipse.xtext.scoping.impl.AbstractDeclarativeScopeProvider;
import org.eclipse.xtext.scoping.impl.AbstractScope;
/**
* This class contains custom scoping description.
*
* see : http://www.eclipse.org/Xtext/documentation/latest/xtext.html#scoping
* on how and when to use it
*
*/
public class MarkupScopeProvider extends AbstractDeclarativeScopeProvider {
@Override
public IScope getScope(final EObject context, EReference reference) {
if (reference == MarkupPackage.Literals.FIGURE_REF_ELEMENT__REF) {
return new AbstractScope(IScope.NULLSCOPE, false)
{
@Override
protected Iterable<IEObjectDescription> getAllLocalElements() {
List<IEObjectDescription> allFigures = new ArrayList<IEObjectDescription>();
for (TreeIterator<Notifier> tit = context.eResource().getResourceSet().getAllContents(); tit.hasNext(); ) {
Notifier eObject = tit.next();
if (eObject instanceof FigureElement) {
FigureElement figureElement = (FigureElement)eObject;
allFigures.add(EObjectDescription.create(figureElement.getDef(), figureElement));
}
}
return allFigures;
}
};
}
return super.getScope(context, reference);
}
}