1 files changed, 113 insertions, 0 deletions
diff --git a/plugins/facet/org.eclipse.papyrus.emf.facet.efacet.core/src/org/eclipse/emf/facet/efacet/core/internal/ResolverManager.java b/plugins/facet/org.eclipse.papyrus.emf.facet.efacet.core/src/org/eclipse/emf/facet/efacet/core/internal/ResolverManager.java
new file mode 100644
index 00000000000..a115682419a
--- /dev/null
+++ b/plugins/facet/org.eclipse.papyrus.emf.facet.efacet.core/src/org/eclipse/emf/facet/efacet/core/internal/ResolverManager.java
@@ -0,0 +1,113 @@
+/**
+ * Copyright (c) 2012 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:
+ *    Gregoire Dupe (Mia-Software) - Bug 375087 - [Table] ITableWidget.addColumn(List<ETypedElement>, List<FacetSet>)
+ *    Gregoire Dupe (Mia-Software) - Bug 372626 - Aggregates
+ */
+package org.eclipse.emf.facet.efacet.core.internal;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IConfigurationElement;
+import org.eclipse.core.runtime.Platform;
+import org.eclipse.emf.facet.efacet.core.internal.exported.IResolver;
+import org.eclipse.emf.facet.efacet.core.internal.exported.IResolverManager;
+import org.eclipse.emf.facet.util.core.Logger;
+
+public class ResolverManager implements IResolverManager {
+
+	private static final String ATT_NAME = "class"; //$NON-NLS-1$
+	private static final String EXT_POINT_ID = "org.eclipse.emf.facet.efacet.core.internal.resolver"; //$NON-NLS-1$
+	private final List<IResolver> resolvers = new ArrayList<IResolver>();
+
+	public ResolverManager() {
+		final IConfigurationElement[] configs = Platform.getExtensionRegistry()
+				.getConfigurationElementsFor(ResolverManager.EXT_POINT_ID);
+		for (IConfigurationElement config : configs) {
+			try {
+				final Object object = config
+						.createExecutableExtension(ResolverManager.ATT_NAME);
+				if (object instanceof IResolver) {
+					final IResolver resolver = (IResolver) object;
+					this.resolvers.add(resolver);
+				}
+			} catch (CoreException e) {
+				Logger.logError(e, Activator.getDefault());
+			}
+
+		}
+	}
+
+	public <T> T resolve(final Object object, final Class<T> aClass) {
+		T result = null;
+		for (IResolver resolver : this.resolvers) {
+			if (resolver.canHandle(object)) {
+				try {
+					result = resolver.resolve(object, aClass);
+				} catch (ClassCastException e) {
+					Logger.logWarning(e, Activator.getDefault());
+					// Nothing to: we will try with an other resolver or return
+					// null
+				}
+				if (result != null) {
+					break;
+				}
+			}
+		}
+		return result;
+	}
+
+	public <T> List<T> selectionPropagation(final Object selectedObject,
+			final Class<T> aClass) {
+		@SuppressWarnings("unchecked")
+		// @SuppressWarnings("unchecked") The untyped list is an definitely
+		// empty list.
+		List<T> result = Collections.EMPTY_LIST;
+		for (IResolver resolver : this.resolvers) {
+			if (resolver.canHandle(selectedObject)) {
+				try {
+					result = resolver.selectionPropagation(selectedObject,
+							aClass);
+				} catch (ClassCastException e) {
+					Logger.logWarning(e, Activator.getDefault());
+					// Nothing to: we will try with an other resolver or return
+					// null
+				}
+				if (result != null) {
+					break;
+				}
+			}
+		}
+		return result;
+	}
+
+	public <T> T selectionRoot(final Object selectedObject,
+			final Class<T> aClass) {
+		T result = null;
+		for (IResolver resolver : this.resolvers) {
+			if (resolver.canHandle(selectedObject)) {
+				try {
+					result = resolver.selectionRoot(selectedObject,
+							aClass);
+				} catch (ClassCastException e) {
+					Logger.logWarning(e, Activator.getDefault());
+					// Nothing to: we will try with an other resolver or return
+					// null
+				}
+				if (result != null) {
+					break;
+				}
+			}
+		}
+		return result;
+	}
+
+}