org.eclipse.xtext.resource.impl.AbstractCompoundSelectable.java Source code

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Here is the source code for org.eclipse.xtext.resource.impl.AbstractCompoundSelectable.java

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/*******************************************************************************
 * Copyright (c) 2010 itemis AG (http://www.itemis.eu) 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
 *******************************************************************************/
package org.eclipse.xtext.resource.impl;

import java.util.Collections;

import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.xtext.naming.QualifiedName;
import org.eclipse.xtext.resource.IEObjectDescription;
import org.eclipse.xtext.resource.ISelectable;

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

/**
 * @author Sebastian Zarnekow - Initial contribution and API
 */
public abstract class AbstractCompoundSelectable implements ISelectable {

    @Override
    public boolean isEmpty() {
        return Iterables.isEmpty(getSelectables());
    }

    @Override
    public Iterable<IEObjectDescription> getExportedObjects() {
        return Iterables.concat(
                Iterables.transform(getSelectables(), new Function<ISelectable, Iterable<IEObjectDescription>>() {
                    @Override
                    public Iterable<IEObjectDescription> apply(ISelectable from) {
                        if (from != null)
                            return from.getExportedObjects();
                        return Collections.emptyList();
                    }
                }));
    }

    protected abstract Iterable<? extends ISelectable> getSelectables();

    @Override
    public Iterable<IEObjectDescription> getExportedObjectsByType(final EClass type) {
        return Iterables.concat(
                Iterables.transform(getSelectables(), new Function<ISelectable, Iterable<IEObjectDescription>>() {
                    @Override
                    public Iterable<IEObjectDescription> apply(ISelectable from) {
                        if (from != null)
                            return from.getExportedObjectsByType(type);
                        return Collections.emptyList();
                    }
                }));
    }

    @Override
    public Iterable<IEObjectDescription> getExportedObjectsByObject(final EObject object) {
        return Iterables.concat(
                Iterables.transform(getSelectables(), new Function<ISelectable, Iterable<IEObjectDescription>>() {
                    @Override
                    public Iterable<IEObjectDescription> apply(ISelectable from) {
                        if (from != null)
                            return from.getExportedObjectsByObject(object);
                        return Collections.emptyList();
                    }
                }));
    }

    @Override
    public Iterable<IEObjectDescription> getExportedObjects(final EClass type, final QualifiedName qualifiedName,
            final boolean ignoreCase) {
        return Iterables.concat(
                Iterables.transform(getSelectables(), new Function<ISelectable, Iterable<IEObjectDescription>>() {
                    @Override
                    public Iterable<IEObjectDescription> apply(ISelectable from) {
                        if (from != null)
                            return from.getExportedObjects(type, qualifiedName, ignoreCase);
                        return Collections.emptyList();
                    }
                }));
    }

}