1 files changed, 95 insertions, 0 deletions
diff --git a/plugins/infra/org.eclipse.papyrus.infra.extendedtypes/src/org/eclipse/papyrus/infra/extendedtypes/ComposedContainerDescriptor.java b/plugins/infra/org.eclipse.papyrus.infra.extendedtypes/src/org/eclipse/papyrus/infra/extendedtypes/ComposedContainerDescriptor.java
new file mode 100644
index 00000000000..3c0094ffd2e
--- /dev/null
+++ b/plugins/infra/org.eclipse.papyrus.infra.extendedtypes/src/org/eclipse/papyrus/infra/extendedtypes/ComposedContainerDescriptor.java
@@ -0,0 +1,95 @@
+/*****************************************************************************
+ * Copyright (c) 2013 CEA LIST.
+ *    
+ * 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:
+ *  Remi Schnekenburger (CEA LIST) - Initial API and implementation
+ *
+ *****************************************************************************/
+package org.eclipse.papyrus.infra.extendedtypes;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.eclipse.emf.ecore.EReference;
+import org.eclipse.gmf.runtime.emf.type.core.IContainerDescriptor;
+import org.eclipse.gmf.runtime.emf.type.core.IElementMatcher;
+
+/**
+ * @author RS211865
+ */
+public class ComposedContainerDescriptor implements IContainerDescriptor {
+
+	private final List<IContainerDescriptor> containerDescriptors;
+
+	/**
+	 * @param containerDescriptors
+	 */
+	public ComposedContainerDescriptor(List<IContainerDescriptor> containerDescriptors) {
+		this.containerDescriptors = containerDescriptors;
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	public IElementMatcher getMatcher() {
+		List<IElementMatcher> matchers = new ArrayList<IElementMatcher>();
+		// creates a composed matcher from all container descriptors
+		for(IContainerDescriptor containerDescriptor : getContainerDescriptors()) {
+			// each composed advice should approve the request
+			IElementMatcher composedMatcher = containerDescriptor.getMatcher();
+			if(composedMatcher != null) {
+				matchers.add(composedMatcher);
+			}
+		}
+		if(matchers != null && !matchers.isEmpty()) {
+			return new ComposedElementMatcher(matchers);
+		}
+		return null;
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	public EReference[] getContainmentFeatures() {
+		// retrieve all references in the intersection of all composed container descriptors
+		List<EReference> joinReferences = null;
+		// creates a composed matcher from all container descriptors
+		for(IContainerDescriptor containerDescriptor : getContainerDescriptors()) {
+			// each composed advice should approve the request
+			EReference[] eReferencesArray = containerDescriptor.getContainmentFeatures();
+			if(eReferencesArray != null) {
+				List<EReference> eReferences = Arrays.asList(eReferencesArray);
+				// if join references has not been set yet, set the list of possible containment features
+				// if not, make the intersection of both list
+				if(joinReferences ==null) {
+					joinReferences = eReferences;
+				} else {
+					List<EReference> newReferences = new ArrayList<EReference>();
+					for(EReference eReference : joinReferences) {
+						if(eReferences.contains(eReference)) {
+							newReferences.add(eReference);
+						}
+					}
+					joinReferences = newReferences;
+				}
+			}
+		}
+		if(joinReferences != null) {
+			return joinReferences.toArray(new EReference[] {});
+		}
+		return null;
+	}
+
+	/**
+	 * @return the containerDescriptors
+	 */
+	protected List<IContainerDescriptor> getContainerDescriptors() {
+		return containerDescriptors;
+	}
+}