resolving this issue

refs 1169

org.fortiss.tooling.kernel.ui/trunk/src/org/fortiss/tooling/kernel/ui/internal/views/LibraryView.java

@@ -17,6 +17,9 @@ $Id: codetemplates.xml 1 2011-01-01 00:00:01Z hoelzl $
 +--------------------------------------------------------------------------*/
 package org.fortiss.tooling.kernel.ui.internal.views;
 
+import static org.fortiss.tooling.kernel.utils.EcoreUtils.filterOutInstanceOf;
+import static org.fortiss.tooling.kernel.utils.KernelModelElementUtils.getParentElement;
+
 import java.util.List;
 import java.util.Set;
 
@@ -37,8 +40,10 @@ import org.eclipse.ui.IWorkbenchPart;
 import org.eclipse.ui.dialogs.FilteredTree;
 import org.eclipse.ui.dialogs.PatternFilter;
 import org.eclipse.ui.part.ViewPart;
+import org.fortiss.tooling.kernel.extension.data.LibraryPrototype;
 import org.fortiss.tooling.kernel.extension.data.Prototype;
 import org.fortiss.tooling.kernel.extension.data.PrototypeCategory;
+import org.fortiss.tooling.kernel.model.ILibraryElement;
 import org.fortiss.tooling.kernel.service.IPrototypeService;
 import org.fortiss.tooling.kernel.ui.extension.IModelElementHandler;
 import org.fortiss.tooling.kernel.ui.extension.base.EditorBase;
@@ -53,7 +58,7 @@ import org.fortiss.tooling.kernel.ui.service.IModelElementHandlerService;
  * @author eder
  * @author $Author: hoelzl $
  * @version $Rev: 18709 $
- * @ConQAT.Rating YELLOW Hash: 39E9DA9C8ED720A9B2BF2E8CF1F59132
+ * @ConQAT.Rating YELLOW Hash: 5E0A6B7513494BEE591C87F52EF828B6
  */
 public class LibraryView extends ViewPart {
 
@@ -134,8 +139,14 @@ public class LibraryView extends ViewPart {
 			containerObject = editorBase.getEditedObject();
 
 			for(Class<? extends EObject> clazz : editorBase.getVisibleEObjectTypes()) {
-				supportedBaseClasses.addAll(IPrototypeService.INSTANCE
-						.getComposablePrototypes(clazz));
+				List<Prototype> composablePrototypes =
+						IPrototypeService.INSTANCE.getComposablePrototypes(clazz);
+				if(getParentElement(containerObject, ILibraryElement.class) == null) {
+					supportedBaseClasses.addAll(composablePrototypes);
+				} else {
+					supportedBaseClasses.addAll(filterOutInstanceOf(LibraryPrototype.class,
+							composablePrototypes));
+				}
 			}
 		} else {
 			containerObject = null;

org.fortiss.tooling.kernel/trunk/src/org/fortiss/tooling/kernel/utils/EcoreUtils.java

@@ -38,7 +38,7 @@ import org.eclipse.emf.ecore.util.EcoreUtil;
  * @author ratiu
  * @author $Author: hoelzl $
  * @version $Rev: 18709 $
- * @ConQAT.Rating GREEN Hash: 222CC17CBA6ACE77BF515B479798D738
+ * @ConQAT.Rating YELLOW Hash: 75E3CD15A900A17ED827D63F214FAF98
  */
 public class EcoreUtils {
 
@@ -121,6 +121,32 @@ public class EcoreUtils {
 		return ECollections.unmodifiableEList(result);
 	}
 
+	/**
+	 * From a given EList with source objects of type S create another
+	 * unmodifiable EList that DOES NOT contain objects of the type given by the
+	 * parameter targetClass. The resulting EList is unmodifiable thereby it
+	 * represents only a view over the source list.
+	 * 
+	 * @param targetClass
+	 *            - a class representing types of elements to be picked
+	 * @param sourceList
+	 *            - an EList with objects of type S
+	 * @return an unmodifiable EList of objects of type S containing only the
+	 *         targetClass instances
+	 */
+	public static <S> EList<S> filterOutInstanceOf(Class<?> targetClass, List<S> sourceList) {
+		if(sourceList == null)
+			return null;
+		EList<S> result = new BasicEList<S>();
+		for(S sourceElement : sourceList) {
+			Class<?> sourceClass = sourceElement.getClass();
+			if(!targetClass.isAssignableFrom(sourceClass)) {
+				result.add(sourceElement);
+			}
+		}
+		return ECollections.unmodifiableEList(result);
+	}
+
 	/**
 	 * From a given EList with source objects of type S pick the first object
 	 * with type T, whereby T is a sub-type of S.