org.lunifera.ecview.uisemantics.scoping.ScopeProvider.java Source code

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Here is the source code for org.lunifera.ecview.uisemantics.scoping.ScopeProvider.java

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/**
 * Copyright (c) 2011 - 2015, Lunifera GmbH (Gross Enzersdorf), Loetz KG (Heidelberg)
 * 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:
 *         Florian Pirchner - Initial implementation
 */

package org.lunifera.ecview.uisemantics.scoping;

import java.util.Collections;

import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EcoreFactory;
import org.eclipse.emf.ecore.InternalEObject;
import org.eclipse.xtext.naming.QualifiedName;
import org.eclipse.xtext.resource.EObjectDescription;
import org.eclipse.xtext.resource.IEObjectDescription;
import org.eclipse.xtext.scoping.IScope;
import org.eclipse.xtext.scoping.impl.SimpleScope;
import org.eclipse.xtext.xbase.scoping.batch.XbaseBatchScopeProvider;
import org.lunifera.ecview.semantic.uisemantics.UiSemanticsPackage;
import org.lunifera.ecview.semantic.uisemantics.UxElementURI;

import com.google.common.base.Function;
import com.google.common.collect.Iterables;

@SuppressWarnings("restriction")
public class ScopeProvider extends XbaseBatchScopeProvider {

    @Override
    public IScope getScope(EObject context, EReference reference) {

        if (reference == UiSemanticsPackage.Literals.UX_EPACKAGE_IMPORT__EPACKAGE) {
            return createEPackageScope();
        } else if (reference == UiSemanticsPackage.Literals.UX_ELEMENT_URI__ECLASS) {
            UxElementURI elementURI = (UxElementURI) context;
            return new EPackageContentScope(elementURI.getEPackage().getEPackage());
        }

        return super.getScope(context, reference);
    }

    protected IScope createEPackageScope() {
        IScope current = new SimpleScope(IScope.NULLSCOPE, Iterables.transform(EPackage.Registry.INSTANCE.keySet(),
                new Function<String, IEObjectDescription>() {
                    public IEObjectDescription apply(String from) {
                        InternalEObject proxyPackage = (InternalEObject) EcoreFactory.eINSTANCE.createEPackage();
                        proxyPackage.eSetProxyURI(URI.createURI(from));
                        return EObjectDescription.create(QualifiedName.create(from), proxyPackage,
                                Collections.singletonMap("nsURI", "true"));
                    }
                }));
        return current;
    }

}