| /***************************************************************************** |
| * Copyright (c) 2013 Cedric Dumoulin. |
| * |
| * |
| * 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: |
| * Cedric Dumoulin Cedric.dumoulin@lifl.fr - Initial API and implementation |
| * |
| *****************************************************************************/ |
| |
| package org.eclipse.papyrus.internal.infra.gmfdiag.layers.model.util; |
| |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.gmf.runtime.notation.Edge; |
| import org.eclipse.gmf.runtime.notation.Shape; |
| import org.eclipse.gmf.runtime.notation.View; |
| import org.eclipse.papyrus.internal.infra.gmfdiag.layers.model.layers.Layer; |
| import org.eclipse.uml2.uml.NamedElement; |
| |
| import com.google.common.base.Predicate; |
| |
| /** |
| * A Predicate used to filter {@link View} allowed by {@link Layer}. |
| * |
| * @author cedric dumoulin |
| * |
| */ |
| public class LayerDiagramViewPredicate implements Predicate<View> { |
| |
| /** |
| * Singleton instnace. |
| */ |
| public static final LayerDiagramViewPredicate instance = new LayerDiagramViewPredicate(); |
| |
| /** |
| * Return true if the view is allowed by Layers. |
| * |
| * @see com.google.common.base.Predicate#apply(java.lang.Object) |
| * |
| * @param view |
| * @return |
| */ |
| @Override |
| public boolean apply(View view) { |
| |
| // View should be Shape or Edge |
| if (!(view instanceof Shape || view instanceof Edge)) { |
| return false; |
| } |
| |
| // Domain element should be set and should be NamedElement |
| EObject ele = view.getElement(); |
| if (ele == null || !(ele instanceof NamedElement)) { |
| return false; |
| } |
| // ok |
| return true; |
| } |
| |
| } |