371381: [SysML Internal Block Diagram] IBD shall support more than one level of modeling

https://bugs.eclipse.org/bugs/show_bug.cgi?id=371381

14 files changed, 567 insertions, 27 deletions

diff --git a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/build.properties b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/build.properties
index d461080a511..fd662a44687 100644
--- a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/build.properties
+++ b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/build.properties
@@ -1,14 +1,14 @@
 bin.includes = META-INF/,\

                .,\

-               plugin.xml,\

                palettes/,\

                about.html,\

                plugin.properties,\

                icons/,\

-               messages.properties

-output..=bin/

+               messages.properties,\

+               plugin.xml

+source..=src/,src-gen/

+bin..=bin/

 src.includes = palettes/,\

                icons/,\

+               messages.properties,\

                about.html

-source..=src/,src-gen/

-bin..=bin/

diff --git a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/plugin.xml b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/plugin.xml
index 0308084404e..3a186f161e8 100644
--- a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/plugin.xml
+++ b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/plugin.xml
@@ -331,8 +331,8 @@
 	<!-- Custom graphical types view provider -->
 	<viewProvider class="org.eclipse.papyrus.sysml.diagram.internalblock.provider.CustomViewProvider">
 		<Priority name="Medium"/>
-		<context viewClass="org.eclipse.gmf.runtime.notation.Node" semanticHints="SysML::Property, SysML::ActorPartProperty, SysML::ValueProperty, SysML::ReferenceProperty, SysML::FlowPort_In, UML::Port, SysML::FlowPort_Out, SysML::PartProperty, SysML::FlowPort_InOut, SysML::FlowPort, SysML::Block, SysML::FlowPort_NA"/>
-		<context viewClass="org.eclipse.gmf.runtime.notation.Node" semanticHints="shape_sysml_flowport_as_affixed, shape_sysml_block_as_composite, shape_uml_port_as_affixed, shape_sysml_blockproperty_as_composite"/>
+		<context viewClass="org.eclipse.gmf.runtime.notation.Node" semanticHints="UML::Property, SysML::ActorPartProperty, SysML::ValueProperty, SysML::ReferenceProperty, SysML::FlowPort_In, UML::Port, SysML::FlowPort_Out, SysML::PartProperty, SysML::FlowPort_InOut, SysML::FlowPort, SysML::Block, SysML::FlowPort_NA"/>
+		<context viewClass="org.eclipse.gmf.runtime.notation.Node" semanticHints="shape_sysml_flowport_as_affixed, shape_sysml_block_as_composite, shape_uml_port_as_affixed, shape_sysml_blockproperty_as_composite, shape_sysml_nestedblockproperty_as_composite"/>
 		<context viewClass="org.eclipse.gmf.runtime.notation.Edge" semanticHints="UML::Dependency, UML::Connector"/>
 		<context viewClass="org.eclipse.gmf.runtime.notation.Edge" semanticHints="link_uml_connector, link_uml_dependency"/>
 		
@@ -432,7 +432,7 @@
 		<object
 			class="org.eclipse.gmf.runtime.notation.Node(org.eclipse.gmf.runtime.notation)"
 			id="org.eclipse.papyrus.sysml.diagram.internalblock.CustomNodeGraphicalTypes">
-			<method name="getType()" value="shape_sysml_flowport_as_affixed, shape_sysml_block_as_composite, shape_uml_port_as_affixed, shape_sysml_blockproperty_as_composite"/>
+			<method name="getType()" value="shape_sysml_flowport_as_affixed, shape_sysml_block_as_composite, shape_uml_port_as_affixed, shape_sysml_blockproperty_as_composite, shape_sysml_nestedblockproperty_as_composite"/>
 		</object>
 		
 		<object
@@ -553,13 +553,25 @@
 		id="org.eclipse.papyrus.sysml.diagram.internalblock.preferences.BlockCompositePreferencePage"
 		name="Block">
 	</page>
-		
+	

 	<page  	category="org.eclipse.papyrus.sysml.diagram.internalblock.preferences"

-		class="org.eclipse.papyrus.sysml.diagram.internalblock.preferences.CustomBlockPropertyCompositePreferencePage"

+		class="org.eclipse.papyrus.sysml.diagram.internalblock.preferences.BlockPropertyCompositePreferencePage"

 		id="org.eclipse.papyrus.sysml.diagram.internalblock.preferences.BlockPropertyCompositePreferencePage"

 		name="PartAndReferences">

 	</page>

 		

+	<page  	category="org.eclipse.papyrus.sysml.diagram.internalblock.preferences.BlockPropertyCompositePreferencePage"

+		class="org.eclipse.papyrus.sysml.diagram.internalblock.preferences.CustomBlockPropertyCompositePreferencePage"

+		id="org.eclipse.papyrus.sysml.diagram.internalblock.preferences.CustomBlockPropertyCompositePreferencePage"

+		name="block property">

+	</page>

+

+	<page  	category="org.eclipse.papyrus.sysml.diagram.internalblock.preferences.BlockPropertyCompositePreferencePage"

+		class="org.eclipse.papyrus.sysml.diagram.internalblock.preferences.CustomNestedBlockPropertyCompositePreferencePage"

+		id="org.eclipse.papyrus.sysml.diagram.internalblock.preferences.CustomBlockPropertyCompositePreferencePage"

+		name="nested property">

+	</page>

+		

 	<page  	category="org.eclipse.papyrus.sysml.diagram.internalblock.preferences"

 		class="org.eclipse.papyrus.sysml.diagram.internalblock.preferences.FlowPortAsBorderItemPreferencePage"

 		id="org.eclipse.papyrus.sysml.diagram.internalblock.preferences.FlowPortPreferencePage"

@@ -664,7 +676,7 @@
 <!-- Diagram specific advices -->

 <extension point="org.eclipse.gmf.runtime.emf.type.core.elementTypes">

 

-	<metamodel nsURI="http://www.eclipse.org/uml2/3.0.0/UML">

+	<metamodel nsURI="http://www.eclipse.org/uml2/4.0.0/UML">

 

 	<!-- Property specific advices (remove inconsistent views when a Property type is set) -->		

 	<adviceBinding id="org.eclipse.papyrus.sysml.diagram.internalblock.PropertyHelperAdvice"

@@ -680,14 +692,14 @@
 				

 	</metamodel>

 </extension>

-	

+

 <!-- UML ElementType bindings to Papyrus shared IClientContext -->

 <extension point="org.eclipse.gmf.runtime.emf.type.core.elementTypeBindings">

 

 	<!-- Bindings declaration to shared IClientContext -->

 	<binding context="org.eclipse.papyrus.infra.services.edit.TypeContext">	

 		<elementType ref="org.eclipse.papyrus.sysml.diagram.internalblock.PropertyHelperAdvice"/>

-		<elementType ref="org.eclipse.papyrus.sysml.diagram.internalblock.DeleteViewDuringMoveHelperAdvice"/>				

+		<elementType ref="org.eclipse.papyrus.sysml.diagram.internalblock.DeleteViewDuringMoveHelperAdvice"/>

 	</binding>

 		

 </extension>

diff --git a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src-gen/org/eclipse/papyrus/sysml/diagram/internalblock/provider/CustomEditPartProvider.java b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src-gen/org/eclipse/papyrus/sysml/diagram/internalblock/provider/CustomEditPartProvider.java
index 0cce2942e04..c872dc44bc5 100644
--- a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src-gen/org/eclipse/papyrus/sysml/diagram/internalblock/provider/CustomEditPartProvider.java
+++ b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src-gen/org/eclipse/papyrus/sysml/diagram/internalblock/provider/CustomEditPartProvider.java
@@ -1,5 +1,5 @@
 /*****************************************************************************
- * Copyright (c) 2011 CEA LIST.
+ * Copyright (c) 2011-2012 CEA LIST.
  *
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
@@ -29,6 +29,7 @@ import org.eclipse.papyrus.sysml.diagram.common.edit.part.BlockPropertyComposite
 import org.eclipse.papyrus.sysml.diagram.common.edit.part.BlockPropertyStructureCompartmentEditPart;
 import org.eclipse.papyrus.sysml.diagram.common.edit.part.FlowPortAffixedLabelNameEditPart;
 import org.eclipse.papyrus.sysml.diagram.common.edit.part.FlowPortAffixedNodeEditPart;
+import org.eclipse.papyrus.sysml.diagram.common.edit.part.NestedBlockPropertyCompositeEditPart;
 import org.eclipse.papyrus.sysml.diagram.common.edit.part.StructureCompartmentEditPart;
 import org.eclipse.papyrus.sysml.diagram.common.utils.SysMLGraphicalTypes;
 import org.eclipse.papyrus.uml.diagram.common.edit.part.AppliedStereotypeAffixedLabelEditPart;
@@ -60,6 +61,7 @@ public class CustomEditPartProvider extends CustomAbstractEditPartProvider {
 
 		// Nodes
 		nodeMap.put(SysMLGraphicalTypes.SHAPE_SYSML_BLOCKPROPERTY_AS_COMPOSITE_ID, BlockPropertyCompositeEditPart.class);
+		nodeMap.put(SysMLGraphicalTypes.SHAPE_SYSML_NESTEDBLOCKPROPERTY_AS_COMPOSITE_ID, NestedBlockPropertyCompositeEditPart.class);
 		nodeMap.put(SysMLGraphicalTypes.SHAPE_SYSML_BLOCK_AS_COMPOSITE_ID, BlockCompositeEditPart.class);
 		nodeMap.put(SysMLGraphicalTypes.SHAPE_SYSML_FLOWPORT_AS_AFFIXED_ID, FlowPortAffixedNodeEditPart.class);
 		nodeMap.put(UMLGraphicalTypes.SHAPE_UML_PORT_AS_AFFIXED_ID, PortAffixedNodeEditPart.class);
diff --git a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src-gen/org/eclipse/papyrus/sysml/diagram/internalblock/provider/CustomGraphicalTypeRegistry.java b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src-gen/org/eclipse/papyrus/sysml/diagram/internalblock/provider/CustomGraphicalTypeRegistry.java
index 1799386bed4..04e563903c4 100644
--- a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src-gen/org/eclipse/papyrus/sysml/diagram/internalblock/provider/CustomGraphicalTypeRegistry.java
+++ b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src-gen/org/eclipse/papyrus/sysml/diagram/internalblock/provider/CustomGraphicalTypeRegistry.java
@@ -19,6 +19,7 @@ import org.eclipse.papyrus.sysml.diagram.common.utils.SysMLGraphicalTypes;
 import org.eclipse.papyrus.sysml.service.types.element.SysMLElementTypes;
 import org.eclipse.papyrus.uml.diagram.common.utils.UMLGraphicalTypes;
 import org.eclipse.papyrus.uml.service.types.element.UMLElementTypes;
+import org.eclipse.uml2.uml.Port;
 import org.eclipse.uml2.uml.Property;
 
 public class CustomGraphicalTypeRegistry extends GraphicalTypeRegistry {
@@ -30,6 +31,7 @@ public class CustomGraphicalTypeRegistry extends GraphicalTypeRegistry {
 
 		// Nodes
 		knownNodes.add(SysMLGraphicalTypes.SHAPE_SYSML_BLOCKPROPERTY_AS_COMPOSITE_ID);
+		knownNodes.add(SysMLGraphicalTypes.SHAPE_SYSML_NESTEDBLOCKPROPERTY_AS_COMPOSITE_ID);
 		knownNodes.add(SysMLGraphicalTypes.SHAPE_SYSML_BLOCK_AS_COMPOSITE_ID);
 		knownNodes.add(SysMLGraphicalTypes.SHAPE_SYSML_FLOWPORT_AS_AFFIXED_ID);
 		knownNodes.add(UMLGraphicalTypes.SHAPE_UML_PORT_AS_AFFIXED_ID);
@@ -62,13 +64,13 @@ public class CustomGraphicalTypeRegistry extends GraphicalTypeRegistry {
 			|| ((ISpecializationType)SysMLElementTypes.REFERENCE_PROPERTY).getMatcher().matches(domainElement)
 			|| ((ISpecializationType)SysMLElementTypes.ACTOR_PART_PROPERTY).getMatcher().matches(domainElement)
 			|| ((ISpecializationType)SysMLElementTypes.VALUE_PROPERTY).getMatcher().matches(domainElement)
-			|| (domainElement instanceof Property)) {
+			|| ((domainElement instanceof Property) && !(domainElement instanceof Port))) {
 
 			if(SysMLGraphicalTypes.COMPARTMENT_SYSML_STRUCTURE_ID.equals(containerType)) {
 				return SysMLGraphicalTypes.SHAPE_SYSML_BLOCKPROPERTY_AS_COMPOSITE_ID;
 			}
 			if(SysMLGraphicalTypes.COMPARTMENT_SYSML_BLOCKPROPERTY_STRUCTURE_ID.equals(containerType)) {
-				return SysMLGraphicalTypes.SHAPE_SYSML_BLOCKPROPERTY_AS_COMPOSITE_ID;
+				return SysMLGraphicalTypes.SHAPE_SYSML_NESTEDBLOCKPROPERTY_AS_COMPOSITE_ID;
 			}
 			
 			return UNDEFINED_TYPE;
@@ -86,6 +88,9 @@ public class CustomGraphicalTypeRegistry extends GraphicalTypeRegistry {
 			if(SysMLGraphicalTypes.SHAPE_SYSML_BLOCKPROPERTY_AS_COMPOSITE_ID.equals(containerType)) {
 				return SysMLGraphicalTypes.SHAPE_SYSML_FLOWPORT_AS_AFFIXED_ID;
 			}
+			if(SysMLGraphicalTypes.SHAPE_SYSML_NESTEDBLOCKPROPERTY_AS_COMPOSITE_ID.equals(containerType)) {
+				return SysMLGraphicalTypes.SHAPE_SYSML_FLOWPORT_AS_AFFIXED_ID;
+			}
 			return UNDEFINED_TYPE;
 		}
 		// End of user code
@@ -124,6 +129,9 @@ public class CustomGraphicalTypeRegistry extends GraphicalTypeRegistry {
 			if(SysMLGraphicalTypes.SHAPE_SYSML_BLOCKPROPERTY_AS_COMPOSITE_ID.equals(containerType)) {
 				return UMLGraphicalTypes.SHAPE_UML_PORT_AS_AFFIXED_ID;
 			}
+			if(SysMLGraphicalTypes.SHAPE_SYSML_NESTEDBLOCKPROPERTY_AS_COMPOSITE_ID.equals(containerType)) {
+				return UMLGraphicalTypes.SHAPE_UML_PORT_AS_AFFIXED_ID;
+			}
 			return UNDEFINED_TYPE;
 		}
 		return super.getNodeGraphicalType(domainElement, containerType);
@@ -144,7 +152,7 @@ public class CustomGraphicalTypeRegistry extends GraphicalTypeRegistry {
 				return SysMLGraphicalTypes.SHAPE_SYSML_BLOCKPROPERTY_AS_COMPOSITE_ID;
 			}
 			if(SysMLGraphicalTypes.COMPARTMENT_SYSML_BLOCKPROPERTY_STRUCTURE_ID.equals(containerType)) {
-				return SysMLGraphicalTypes.SHAPE_SYSML_BLOCKPROPERTY_AS_COMPOSITE_ID;
+				return SysMLGraphicalTypes.SHAPE_SYSML_NESTEDBLOCKPROPERTY_AS_COMPOSITE_ID;
 			}
 			
 			return UNDEFINED_TYPE;
@@ -162,6 +170,9 @@ public class CustomGraphicalTypeRegistry extends GraphicalTypeRegistry {
 			if(SysMLGraphicalTypes.SHAPE_SYSML_BLOCKPROPERTY_AS_COMPOSITE_ID.equals(containerType)) {
 				return SysMLGraphicalTypes.SHAPE_SYSML_FLOWPORT_AS_AFFIXED_ID;
 			}
+			if(SysMLGraphicalTypes.SHAPE_SYSML_NESTEDBLOCKPROPERTY_AS_COMPOSITE_ID.equals(containerType)) {
+				return SysMLGraphicalTypes.SHAPE_SYSML_FLOWPORT_AS_AFFIXED_ID;
+			}
 			
 			return UNDEFINED_TYPE;
 		}
@@ -202,6 +213,9 @@ public class CustomGraphicalTypeRegistry extends GraphicalTypeRegistry {
 			if(SysMLGraphicalTypes.SHAPE_SYSML_BLOCKPROPERTY_AS_COMPOSITE_ID.equals(containerType)) {
 				return UMLGraphicalTypes.SHAPE_UML_PORT_AS_AFFIXED_ID;
 			}
+			if(SysMLGraphicalTypes.SHAPE_SYSML_NESTEDBLOCKPROPERTY_AS_COMPOSITE_ID.equals(containerType)) {
+				return UMLGraphicalTypes.SHAPE_UML_PORT_AS_AFFIXED_ID;
+			}
 			return UNDEFINED_TYPE;
 		}
 		return super.getNodeGraphicalType(proposedType, containerType);
diff --git a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src-gen/org/eclipse/papyrus/sysml/diagram/internalblock/provider/CustomViewProvider.java b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src-gen/org/eclipse/papyrus/sysml/diagram/internalblock/provider/CustomViewProvider.java
index f7ade19a846..b5f83fd16ce 100644
--- a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src-gen/org/eclipse/papyrus/sysml/diagram/internalblock/provider/CustomViewProvider.java
+++ b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src-gen/org/eclipse/papyrus/sysml/diagram/internalblock/provider/CustomViewProvider.java
@@ -1,5 +1,5 @@
 /*****************************************************************************
- * Copyright (c) 2011 CEA LIST.
+ * Copyright (c) 2011-2012 CEA LIST.
  *
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
@@ -26,6 +26,7 @@ import org.eclipse.papyrus.gmf.diagram.common.provider.CustomAbstractViewProvide
 import org.eclipse.papyrus.sysml.diagram.common.factory.BlockCompositeClassifierViewFactory;
 import org.eclipse.papyrus.sysml.diagram.common.factory.BlockPropertyCompositeClassifierViewFactory;
 import org.eclipse.papyrus.sysml.diagram.common.factory.FlowPortAffixedNodeViewFactory;
+import org.eclipse.papyrus.sysml.diagram.common.factory.NestedBlockPropertyCompositeClassifierViewFactory;
 import org.eclipse.papyrus.sysml.diagram.common.utils.SysMLGraphicalTypes;
 import org.eclipse.papyrus.uml.diagram.common.factory.ConnectorLinkViewFactory;
 import org.eclipse.papyrus.uml.diagram.common.factory.DependencyLinkViewFactory;
@@ -50,6 +51,7 @@ public class CustomViewProvider extends CustomAbstractViewProvider {
 		// Custom classifier nodes
 		nodeMap.put(SysMLGraphicalTypes.SHAPE_SYSML_BLOCK_AS_COMPOSITE_ID, BlockCompositeClassifierViewFactory.class);
 		nodeMap.put(SysMLGraphicalTypes.SHAPE_SYSML_BLOCKPROPERTY_AS_COMPOSITE_ID, BlockPropertyCompositeClassifierViewFactory.class);
+		nodeMap.put(SysMLGraphicalTypes.SHAPE_SYSML_NESTEDBLOCKPROPERTY_AS_COMPOSITE_ID, NestedBlockPropertyCompositeClassifierViewFactory.class);
 		// Custom affixed nodes
 		nodeMap.put(SysMLGraphicalTypes.SHAPE_SYSML_FLOWPORT_AS_AFFIXED_ID, FlowPortAffixedNodeViewFactory.class);
 		nodeMap.put(UMLGraphicalTypes.SHAPE_UML_PORT_AS_AFFIXED_ID, PortAffixedNodeViewFactory.class);
diff --git a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/edit/policy/CustomBlockPropertyStructureCompartmentEditPartDropEditPolicy.java b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/edit/policy/CustomBlockPropertyStructureCompartmentEditPartDropEditPolicy.java
index 4fabeb183c2..6983a32126a 100644
--- a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/edit/policy/CustomBlockPropertyStructureCompartmentEditPartDropEditPolicy.java
+++ b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/edit/policy/CustomBlockPropertyStructureCompartmentEditPartDropEditPolicy.java
@@ -1,5 +1,5 @@
 /*****************************************************************************

- * Copyright (c) 2011 CEA LIST.

+ * Copyright (c) 2011-2012 CEA LIST.

  *

  * All rights reserved. This program and the accompanying materials

  * are made available under the terms of the Eclipse Public License v1.0

@@ -22,7 +22,10 @@ import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
 import org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart;

 import org.eclipse.gmf.runtime.diagram.ui.requests.DropObjectsRequest;

 import org.eclipse.papyrus.gmf.diagram.common.commands.SelectAndExecuteCommand;

+import org.eclipse.papyrus.sysml.diagram.internalblock.utils.BlockDropHelper;

 import org.eclipse.papyrus.sysml.diagram.internalblock.utils.PartDropHelper;

+import org.eclipse.papyrus.sysml.service.types.element.SysMLElementTypes;

+import org.eclipse.papyrus.uml.service.types.element.UMLElementTypes;

 import org.eclipse.ui.PlatformUI;

 

 /** 

@@ -44,12 +47,14 @@ public class CustomBlockPropertyStructureCompartmentEditPartDropEditPolicy exten
 	@Override

 	public Command getDropObjectsCommand(DropObjectsRequest dropRequest) {

 	

+		BlockDropHelper helper = new BlockDropHelper(getEditingDomain());

+		

 		// Single drop management possible drop action list can be proposed

 		if(dropRequest.getObjects().size() == 1) {

 		

 			// List of available drop commands

 			List<Command> commandChoice = new ArrayList<Command>();

-					

+

 			// 1. Build command to drop BlockProperty

 			PartDropHelper partDropHelper = new PartDropHelper(getEditingDomain());

 			Command dropPartOnPart = partDropHelper.getDropPartOnPart(dropRequest, (GraphicalEditPart)getHost());

@@ -57,7 +62,37 @@ public class CustomBlockPropertyStructureCompartmentEditPartDropEditPolicy exten
 				commandChoice.add(dropPartOnPart);

 			}

 			

-			// 2. Build default drop command (show view of the dropped object)

+			// 2. Try to create a Part typed by the dropped object

+			Command dropAsTypedPart = helper.getDropAsStructureItemOnPart(dropRequest, (GraphicalEditPart)getHost(), SysMLElementTypes.PART_PROPERTY);

+			if ((dropAsTypedPart != null) && (dropAsTypedPart.canExecute())) {

+				commandChoice.add(dropAsTypedPart);

+			}

+

+			// 3. Try to create a Reference typed by the dropped object

+			Command dropAsTypedReference = helper.getDropAsStructureItemOnPart(dropRequest, (GraphicalEditPart)getHost(), SysMLElementTypes.REFERENCE_PROPERTY);

+			if ((dropAsTypedReference != null) && (dropAsTypedReference.canExecute())) {

+				commandChoice.add(dropAsTypedReference);

+			}

+

+			// 4. Try to create an ActorPart typed by the dropped object

+			Command dropAsTypedActorPart = helper.getDropAsStructureItemOnPart(dropRequest, (GraphicalEditPart)getHost(), SysMLElementTypes.ACTOR_PART_PROPERTY);

+			if ((dropAsTypedActorPart != null) && (dropAsTypedActorPart.canExecute())) {

+				commandChoice.add(dropAsTypedActorPart);

+			}

+

+			// 5. Try to create a Value typed by the dropped object

+			Command dropAsTypedValue = helper.getDropAsStructureItemOnPart(dropRequest, (GraphicalEditPart)getHost(), SysMLElementTypes.VALUE_PROPERTY);

+			if ((dropAsTypedValue != null) && (dropAsTypedValue.canExecute())) {

+				commandChoice.add(dropAsTypedValue);

+			}

+

+			// 6. Try to create a Property typed by the dropped object

+			Command dropAsTypedProperty= helper.getDropAsStructureItemOnPart(dropRequest, (GraphicalEditPart)getHost(), UMLElementTypes.PROPERTY);

+			if ((dropAsTypedProperty != null) && (dropAsTypedProperty.canExecute())) {

+				commandChoice.add(dropAsTypedProperty);

+			}

+

+			// 7. Build default drop command (show view of the dropped object)

 			Command defaultDropCommand = super.getDropObjectsCommand(dropRequest);

 			defaultDropCommand.setLabel("Default drop (Show dropped object in diagram)");

 			if ((defaultDropCommand != null) && (defaultDropCommand.canExecute())) {

diff --git a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/edit/policy/CustomNestedBlockPropertyCompositeSemanticEditPolicy.java b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/edit/policy/CustomNestedBlockPropertyCompositeSemanticEditPolicy.java
new file mode 100644
index 00000000000..6e2ffd0f6ec
--- /dev/null
+++ b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/edit/policy/CustomNestedBlockPropertyCompositeSemanticEditPolicy.java
@@ -0,0 +1,94 @@
+/*****************************************************************************

+ * 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:

+ *		

+ *		CEA LIST - Initial API and implementation

+ *

+ *****************************************************************************/

+package org.eclipse.papyrus.sysml.diagram.internalblock.edit.policy;

+

+import org.eclipse.gef.commands.Command;

+import org.eclipse.gef.commands.UnexecutableCommand;

+import org.eclipse.gmf.runtime.emf.type.core.requests.CreateRelationshipRequest;

+import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientReferenceRelationshipRequest;

+import org.eclipse.gmf.runtime.notation.View;

+import org.eclipse.papyrus.gmf.diagram.common.provider.IGraphicalTypeRegistry;

+import org.eclipse.papyrus.sysml.diagram.common.edit.policy.NestedBlockPropertyCompositeSemanticEditPolicy;

+import org.eclipse.papyrus.sysml.diagram.internalblock.provider.CustomGraphicalTypeRegistry;

+import org.eclipse.papyrus.sysml.diagram.internalblock.provider.ElementTypes;

+import org.eclipse.papyrus.sysml.diagram.internalblock.provider.GraphicalTypeRegistry;

+import org.eclipse.papyrus.uml.diagram.composite.edit.commands.CommentAnnotatedElementCreateCommand;

+import org.eclipse.papyrus.uml.diagram.composite.edit.commands.CommentAnnotatedElementReorientCommand;

+import org.eclipse.papyrus.uml.diagram.composite.edit.commands.ConstraintConstrainedElementCreateCommand;

+import org.eclipse.papyrus.uml.diagram.composite.edit.commands.ConstraintConstrainedElementReorientCommand;

+import org.eclipse.papyrus.uml.service.types.utils.RequestParameterConstants;

+

+/**

+ * <pre>

+ * Custom semantic edit policy that replace DefaultSemanticEditPolicy

+ * in order to manage Class Diagram specific elements (reference 

+ * relationships COMMENT_ANNOTATED_ELEMENT and CONSTRAINT_CONSTRAINED_ELEMENT).

+ * </pre>

+ */

+public class CustomNestedBlockPropertyCompositeSemanticEditPolicy extends NestedBlockPropertyCompositeSemanticEditPolicy {

+

+	/** Local graphical type registry for graphical elements */

+	private IGraphicalTypeRegistry registry = new CustomGraphicalTypeRegistry();

+	

+	/** Local graphical type registry for inherited graphical elements */

+	private IGraphicalTypeRegistry inheritedRegistry = new GraphicalTypeRegistry();

+	

+	/**

+	 * {@inheritDoc}

+	 */

+	@Override

+	protected Command getCreateRelationshipCommand(CreateRelationshipRequest req) {

+

+		if(ElementTypes.COMMENT_ANNOTATED_ELEMENT == req.getElementType()) {

+			return getGEFWrapper(new CommentAnnotatedElementCreateCommand(req, req.getSource(), req.getTarget()));

+		}

+

+		if(ElementTypes.CONSTRAINT_CONSTRAINED_ELEMENT == req.getElementType()) {

+			return getGEFWrapper(new ConstraintConstrainedElementCreateCommand(req, req.getSource(), req.getTarget()));

+		}

+

+		String newEdgeGraphicalType = registry.getEdgeGraphicalType(req.getElementType());

+

+		if(inheritedRegistry.isKnownEdgeType(newEdgeGraphicalType)) {

+			return UnexecutableCommand.INSTANCE;

+		}

+

+		if(!registry.isKnownEdgeType(newEdgeGraphicalType)) {

+			return UnexecutableCommand.INSTANCE;

+		}

+

+		return super.getCreateRelationshipCommand(req);

+	}

+

+	/**

+	 * {@inheritDoc}

+	 */

+	@Override

+	protected Command getReorientReferenceRelationshipCommand(ReorientReferenceRelationshipRequest req) {

+

+		View reconnectedView = (View)req.getParameter(RequestParameterConstants.GRAPHICAL_RECONNECTED_EDGE);

+		String reconnectedViewType = (reconnectedView != null) ? reconnectedView.getType() : IGraphicalTypeRegistry.UNDEFINED_TYPE;

+

+		if(ElementTypes.COMMENT_ANNOTATED_ELEMENT.getSemanticHint().equals(reconnectedViewType)) {

+			return getGEFWrapper(new CommentAnnotatedElementReorientCommand(req));

+		}

+

+		if(ElementTypes.CONSTRAINT_CONSTRAINED_ELEMENT.getSemanticHint().equals(reconnectedViewType)) {

+			return getGEFWrapper(new ConstraintConstrainedElementReorientCommand(req));

+		}

+

+		return super.getReorientReferenceRelationshipCommand(req);

+	}

+

+}

diff --git a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/preferences/BlockPropertyCompositePreferencePage.java b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/preferences/BlockPropertyCompositePreferencePage.java
new file mode 100644
index 00000000000..eaa575a5468
--- /dev/null
+++ b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/preferences/BlockPropertyCompositePreferencePage.java
@@ -0,0 +1,42 @@
+/*****************************************************************************
+ * 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:
+ *		
+ *		CEA LIST - Initial API and implementation
+ *
+ *****************************************************************************/
+package org.eclipse.papyrus.sysml.diagram.internalblock.preferences;
+
+import org.eclipse.gmf.runtime.common.ui.preferences.AbstractPreferencePage;
+import org.eclipse.jface.preference.IPreferenceStore;
+import org.eclipse.swt.widgets.Composite;
+
+public class BlockPropertyCompositePreferencePage extends AbstractPreferencePage {
+
+	/** Constructor */
+	public BlockPropertyCompositePreferencePage() {
+		super();
+	}
+
+	/** Default preferences initializer */
+	public static void initDefaults(IPreferenceStore store) {
+		CustomBlockPropertyCompositePreferencePage.initDefaults(store);
+		CustomNestedBlockPropertyCompositePreferencePage.initDefaults(store);
+	}
+
+	@Override
+	protected void addFields(Composite parent) {
+
+	}
+
+	@Override
+	protected void initHelp() {
+
+	}
+}
diff --git a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/preferences/CustomBlockPropertyCompositePreferencePage.java b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/preferences/CustomBlockPropertyCompositePreferencePage.java
index f6ef06879b7..fcb2c3653f0 100644
--- a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/preferences/CustomBlockPropertyCompositePreferencePage.java
+++ b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/preferences/CustomBlockPropertyCompositePreferencePage.java
@@ -1,5 +1,5 @@
 /*****************************************************************************
- * Copyright (c) 2011 CEA LIST.
+ * Copyright (c) 2011-2012 CEA LIST.
  *
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
@@ -89,6 +89,8 @@ public class CustomBlockPropertyCompositePreferencePage extends InternalBlockDia
 	public static void initDefaults(IPreferenceStore store) {
 		// Start of user code custom default initializations
 		store.setDefault(LabelPreferenceHelper.getPreferenceConstant(prefLabelKey, ILabelPreferenceConstants.LABEL_DISPLAY_PREFERENCE), DISP_NAME | DISP_TYPE| DISP_UNDEFINED_TYPE);
+		store.setDefault(PreferenceConstantHelper.getElementConstant(prefKey, PreferenceConstantHelper.WIDTH), 160);
+		store.setDefault(PreferenceConstantHelper.getElementConstant(prefKey, PreferenceConstantHelper.HEIGHT), 100);
 		// End of user code
 		
 		// Initialize default visibility for compartments in preference page.
diff --git a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/preferences/CustomNestedBlockPropertyCompositePreferencePage.java b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/preferences/CustomNestedBlockPropertyCompositePreferencePage.java
new file mode 100644
index 00000000000..d957e3b8e2e
--- /dev/null
+++ b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/preferences/CustomNestedBlockPropertyCompositePreferencePage.java
@@ -0,0 +1,268 @@
+/*****************************************************************************
+ * 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:
+ *		
+ *		CEA LIST - Initial API and implementation
+ *
+ *****************************************************************************/
+package org.eclipse.papyrus.sysml.diagram.internalblock.preferences;
+
+import static org.eclipse.papyrus.sysml.diagram.common.preferences.ILabelPreferenceConstants.DISP_DEFAULTVALUE;
+import static org.eclipse.papyrus.sysml.diagram.common.preferences.ILabelPreferenceConstants.DISP_DEFAULT_MULTIPLICITY;
+import static org.eclipse.papyrus.sysml.diagram.common.preferences.ILabelPreferenceConstants.DISP_DERIVE;
+import static org.eclipse.papyrus.sysml.diagram.common.preferences.ILabelPreferenceConstants.DISP_MODIFIERS;
+import static org.eclipse.papyrus.sysml.diagram.common.preferences.ILabelPreferenceConstants.DISP_MULTIPLICITY;
+import static org.eclipse.papyrus.sysml.diagram.common.preferences.ILabelPreferenceConstants.DISP_NAME;
+import static org.eclipse.papyrus.sysml.diagram.common.preferences.ILabelPreferenceConstants.DISP_TYPE;
+import static org.eclipse.papyrus.sysml.diagram.common.preferences.ILabelPreferenceConstants.DISP_UNDEFINED_TYPE;
+import static org.eclipse.papyrus.sysml.diagram.common.preferences.ILabelPreferenceConstants.DISP_VISIBILITY;
+
+import org.eclipse.jface.preference.IPreferenceStore;
+import org.eclipse.papyrus.infra.gmfdiag.preferences.utils.PreferenceConstantHelper;
+import org.eclipse.papyrus.sysml.diagram.common.preferences.ILabelPreferenceConstants;
+import org.eclipse.papyrus.sysml.diagram.common.preferences.LabelPreferenceHelper;
+import org.eclipse.papyrus.sysml.diagram.common.utils.SysMLGraphicalTypes;
+import org.eclipse.papyrus.sysml.diagram.internalblock.provider.ElementTypes;
+import org.eclipse.papyrus.uml.diagram.common.utils.UMLGraphicalTypes;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.events.SelectionListener;
+import org.eclipse.swt.layout.FormAttachment;
+import org.eclipse.swt.layout.FormData;
+import org.eclipse.swt.layout.FormLayout;
+import org.eclipse.swt.widgets.Button;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Group;
+import org.eclipse.ui.views.properties.tabbed.ITabbedPropertyConstants;
+
+/**
+ * Preference page for Part and References.
+ */
+public class CustomNestedBlockPropertyCompositePreferencePage extends InternalBlockDiagramNodePreferencePage {
+
+	/** Constant key to access preferences */
+	public static String prefKey = ElementTypes.DIAGRAM_ID + "_" + SysMLGraphicalTypes.SHAPE_SYSML_NESTEDBLOCKPROPERTY_AS_COMPOSITE_ID; //$NON-NLS-1$
+
+	public static String prefLabelKey = prefKey + "-" + UMLGraphicalTypes.LABEL_UML_PROPERTY_LABEL_ID; //$NON-NLS-1$	
+		
+	/** Constructor */
+	public CustomNestedBlockPropertyCompositePreferencePage() {
+		super();
+		setPreferenceKey(ElementTypes.DIAGRAM_ID + "_" + SysMLGraphicalTypes.SHAPE_SYSML_BLOCKPROPERTY_AS_COMPOSITE_ID); //$NON-NLS-1$
+	}
+
+	/** Default preferences initializer */
+	public static void initDefaults(IPreferenceStore store) {
+		// Start of user code custom default initializations
+		store.setDefault(LabelPreferenceHelper.getPreferenceConstant(prefLabelKey, ILabelPreferenceConstants.LABEL_DISPLAY_PREFERENCE), DISP_NAME | DISP_TYPE| DISP_UNDEFINED_TYPE);
+		store.setDefault(PreferenceConstantHelper.getElementConstant(prefKey, PreferenceConstantHelper.WIDTH), 160);
+		store.setDefault(PreferenceConstantHelper.getElementConstant(prefKey, PreferenceConstantHelper.HEIGHT), 80);
+		// End of user code
+	}
+	
+	/** buttons to select the display mask of the label */
+	protected Button bttnVisibility, bttnDerive, bttnName, bttnType, bttnUndefined_Type, bttnMultiplicity, bttnDefault_Multiplicity, bttnDefaultValue, bttnModifiers;
+
+	private String labelDisplayPreferenceKey = LabelPreferenceHelper.getPreferenceConstant(prefLabelKey, ILabelPreferenceConstants.LABEL_DISPLAY_PREFERENCE);
+
+	/** current property display style */
+	private int propertyValue = getPreferenceStore().getInt(labelDisplayPreferenceKey);
+
+	/**
+	 * Creates a button with the {@link SWT#CHECK} style.
+	 * 
+	 * @param parent
+	 *        the parent of the button
+	 * @param label
+	 *        the label of the button
+	 * @param mask
+	 *        the value controlled by the button
+	 * @return the button created
+	 */
+	protected Button createCheckButton(Composite parent, String label, int mask) {
+		Button button = new Button(parent, SWT.CHECK);
+		button.setText(label);
+		button.addSelectionListener(new AppearenceSelectionListener(mask));
+		return button;
+	}
+
+	/**
+	 * Creates the group and check boxes to choose the kind of display
+	 * 
+	 * @param parent
+	 *        the parent composite that holds the group
+	 */
+	protected void createLabelPreferencesButtons(Composite parent) {
+		// create group that host the buttons
+		Group group = new Group(parent, SWT.SHADOW_NONE);
+		group.setText("Label Display");
+		group.setLayout(new FormLayout());
+
+		FormData data;
+
+		bttnVisibility = createCheckButton(group, "Visibility", DISP_VISIBILITY);
+		data = new FormData();
+		data.left = new FormAttachment(0, 0);
+		data.top = new FormAttachment(0, 0);
+		bttnVisibility.setLayoutData(data);
+
+		bttnDerive = createCheckButton(group, "Derive", DISP_DERIVE);
+		data = new FormData();
+		data.left = new FormAttachment(bttnVisibility, 85);
+		data.top = new FormAttachment(0, 0);
+		bttnDerive.setLayoutData(data);
+
+		bttnName = createCheckButton(group, "Name", DISP_NAME);
+		data = new FormData();
+		data.left = new FormAttachment(bttnDerive, 85);
+		data.top = new FormAttachment(0, 0);
+		bttnName.setLayoutData(data);
+
+		bttnType = createCheckButton(group, "Type", DISP_TYPE);
+		data = new FormData();
+		data.left = new FormAttachment(bttnName, 85);
+		data.top = new FormAttachment(0, 0);
+		bttnType.setLayoutData(data);
+
+		bttnUndefined_Type = createCheckButton(group, "Undefined_Type", DISP_UNDEFINED_TYPE);
+		data = new FormData();
+		data.left = new FormAttachment(0, 0);
+		data.top = new FormAttachment(bttnVisibility, ITabbedPropertyConstants.HSPACE);
+		bttnUndefined_Type.setLayoutData(data);
+
+		bttnMultiplicity = createCheckButton(group, "Multiplicity", DISP_MULTIPLICITY);
+		data = new FormData();
+		data.left = new FormAttachment(bttnVisibility, 85);
+		data.top = new FormAttachment(bttnVisibility, ITabbedPropertyConstants.HSPACE);
+		bttnMultiplicity.setLayoutData(data);
+
+		bttnDefault_Multiplicity = createCheckButton(group, "Default_Multiplicity", DISP_DEFAULT_MULTIPLICITY);
+		data = new FormData();
+		data.left = new FormAttachment(bttnDerive, 85);
+		data.top = new FormAttachment(bttnVisibility, ITabbedPropertyConstants.HSPACE);
+		bttnDefault_Multiplicity.setLayoutData(data);
+
+		bttnDefaultValue = createCheckButton(group, "DefaultValue", DISP_DEFAULTVALUE);
+		data = new FormData();
+		data.left = new FormAttachment(bttnName, 85);
+		data.top = new FormAttachment(bttnVisibility, ITabbedPropertyConstants.HSPACE);
+		bttnDefaultValue.setLayoutData(data);
+
+		bttnModifiers = createCheckButton(group, "Modifiers", DISP_MODIFIERS);
+		data = new FormData();
+		data.left = new FormAttachment(0, 0);
+		data.top = new FormAttachment(bttnUndefined_Type, ITabbedPropertyConstants.HSPACE);
+		bttnModifiers.setLayoutData(data);
+
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	protected void createPageContents(Composite parent) {
+		super.createPageContents(parent);
+
+		// adds the label preferences check boxes
+		createLabelPreferencesButtons(parent);
+
+		refreshButtons();
+	}
+
+	/**
+	 * Load the default preferences of the fields contained in this page
+	 */
+	protected void loadDefaultPreferences() {
+		propertyValue = getPreferenceStore().getDefaultInt(labelDisplayPreferenceKey);
+		refreshButtons();
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	protected void performDefaults() {
+		loadDefaultPreferences();
+		super.performDefaults();
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public boolean performOk() {
+		storePreferences();
+		return super.performOk();
+	}
+
+	/**
+	 * Refresh the buttons that manages the display.
+	 */
+	protected void refreshButtons() {
+
+		bttnVisibility.setSelection((propertyValue & DISP_VISIBILITY) == DISP_VISIBILITY);
+		bttnDerive.setSelection((propertyValue & DISP_DERIVE) == DISP_DERIVE);
+		bttnName.setSelection((propertyValue & DISP_NAME) == DISP_NAME);
+		bttnType.setSelection((propertyValue & DISP_TYPE) == DISP_TYPE);
+		bttnUndefined_Type.setSelection((propertyValue & DISP_UNDEFINED_TYPE) == DISP_UNDEFINED_TYPE);		
+		bttnMultiplicity.setSelection((propertyValue & DISP_MULTIPLICITY) == DISP_MULTIPLICITY);
+		bttnDefault_Multiplicity.setSelection((propertyValue & DISP_DEFAULT_MULTIPLICITY) == DISP_DEFAULT_MULTIPLICITY);
+		bttnDefaultValue.setSelection((propertyValue & DISP_DEFAULTVALUE) == DISP_DEFAULTVALUE);
+		bttnModifiers.setSelection((propertyValue & DISP_MODIFIERS) == DISP_MODIFIERS);
+
+	}
+
+	/**
+	 * Stores the values of the fields contained in this page into the preference store.
+	 */
+	protected void storePreferences() {
+		super.storePreferences();
+		IPreferenceStore store = getPreferenceStore();
+		// checks the stored value and the actual one, so does not refresh diagram if it is not
+		// needed
+		if(propertyValue != store.getInt(labelDisplayPreferenceKey)) {
+			store.setValue(labelDisplayPreferenceKey, propertyValue);
+		}
+	}
+
+	/**
+	 * Listeners for the check buttons that select the display.
+	 */
+	private class AppearenceSelectionListener implements SelectionListener {
+
+		/** The constant which refers the element to display or not. */
+		final private int style;
+
+		/**
+		 * Default Constructor.
+		 * 
+		 * @param style
+		 */
+		public AppearenceSelectionListener(int style) {
+			this.style = style;
+		}
+
+		/**
+		 * {@inheritDoc}
+		 */
+		public void widgetDefaultSelected(SelectionEvent e) {
+
+		}
+
+		/**
+		 * {@inheritDoc}
+		 */
+		public void widgetSelected(SelectionEvent e) {
+			// add or remove the flag to the display property value (invert the current value)
+			propertyValue = propertyValue ^ style;
+			// refresh buttons to show current values
+			refreshButtons();
+		}
+	}
+}
diff --git a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/preferences/CustomPreferenceInitializer.java b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/preferences/CustomPreferenceInitializer.java
index 2af270319f9..05bd69ab49c 100644
--- a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/preferences/CustomPreferenceInitializer.java
+++ b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/preferences/CustomPreferenceInitializer.java
@@ -1,5 +1,5 @@
 /*****************************************************************************

- * Copyright (c) 2010-2011 CEA LIST.

+ * Copyright (c) 2010-2012 CEA LIST.

  *

  * All rights reserved. This program and the accompanying materials

  * are made available under the terms of the Eclipse Public License v1.0

@@ -37,7 +37,7 @@ public class CustomPreferenceInitializer extends InternalBlockDiagramPreferenceI
 		

 		PortAsBorderItemPreferencePage.initDefaults(store);

 		FlowPortAsBorderItemPreferencePage.initDefaults(store);

-		CustomBlockPropertyCompositePreferencePage.initDefaults(store);

+		BlockPropertyCompositePreferencePage.initDefaults(store);

 		CustomConnectorPreferencePage.initDefaults(store);

 

 		// Initialize default positions for labels.

diff --git a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/provider/CustomEditPolicyProvider.java b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/provider/CustomEditPolicyProvider.java
index 475102f9ae2..94aaabc59d7 100644
--- a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/provider/CustomEditPolicyProvider.java
+++ b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/provider/CustomEditPolicyProvider.java
@@ -1,5 +1,5 @@
 /*****************************************************************************

- * Copyright (c) 2010-2011 CEA LIST.

+ * Copyright (c) 2010-2012 CEA LIST.

  *

  * All rights reserved. This program and the accompanying materials

  * are made available under the terms of the Eclipse Public License v1.0

@@ -26,6 +26,7 @@ import org.eclipse.papyrus.sysml.diagram.common.edit.part.BlockCompositeEditPart
 import org.eclipse.papyrus.sysml.diagram.common.edit.part.BlockPropertyCompositeEditPart;

 import org.eclipse.papyrus.sysml.diagram.common.edit.part.BlockPropertyStructureCompartmentEditPart;

 import org.eclipse.papyrus.sysml.diagram.common.edit.part.FlowPortAffixedNodeEditPart;

+import org.eclipse.papyrus.sysml.diagram.common.edit.part.NestedBlockPropertyCompositeEditPart;

 import org.eclipse.papyrus.sysml.diagram.common.edit.part.StructureCompartmentEditPart;

 import org.eclipse.papyrus.sysml.diagram.internalblock.edit.policy.CustomBlockCompositeSemanticEditPolicy;

 import org.eclipse.papyrus.sysml.diagram.internalblock.edit.policy.CustomBlockPropertyCompositeDropEditPolicy;

@@ -33,6 +34,7 @@ import org.eclipse.papyrus.sysml.diagram.internalblock.edit.policy.CustomBlockPr
 import org.eclipse.papyrus.sysml.diagram.internalblock.edit.policy.CustomBlockPropertyStructureCompartmentEditPartDropEditPolicy;

 import org.eclipse.papyrus.sysml.diagram.internalblock.edit.policy.CustomDefaultSemanticEditPolicy;

 import org.eclipse.papyrus.sysml.diagram.internalblock.edit.policy.CustomDragDropEditPolicy;

+import org.eclipse.papyrus.sysml.diagram.internalblock.edit.policy.CustomNestedBlockPropertyCompositeSemanticEditPolicy;

 import org.eclipse.papyrus.sysml.diagram.internalblock.edit.policy.EncapsulatedClassifierDropEditPolicy;

 import org.eclipse.papyrus.sysml.diagram.internalblock.edit.policy.StructureClassifierDropEditPolicy;

 import org.eclipse.papyrus.sysml.diagram.internalblock.edit.policy.TypedElementDropEditPolicy;

@@ -120,6 +122,11 @@ public class CustomEditPolicyProvider extends InternalBlockDiagramEditPolicyProv
 			editPart.installEditPolicy(EditPolicyRoles.SEMANTIC_ROLE, new CustomBlockPropertyCompositeSemanticEditPolicy());

 		}

 		

+		if(editPart instanceof NestedBlockPropertyCompositeEditPart) {

+			editPart.installEditPolicy(EditPolicyRoles.DRAG_DROP_ROLE, new CustomBlockPropertyCompositeDropEditPolicy());

+			editPart.installEditPolicy(EditPolicyRoles.SEMANTIC_ROLE, new CustomNestedBlockPropertyCompositeSemanticEditPolicy());

+		}

+		

 		if(editPart instanceof BlockPropertyStructureCompartmentEditPart) {

 			editPart.installEditPolicy(EditPolicyRoles.DRAG_DROP_ROLE, new CustomBlockPropertyStructureCompartmentEditPartDropEditPolicy());

 		}

diff --git a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/utils/BlockDropHelper.java b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/utils/BlockDropHelper.java
index 9292cc4c138..d261efba84e 100644
--- a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/utils/BlockDropHelper.java
+++ b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/utils/BlockDropHelper.java
@@ -44,6 +44,7 @@ import org.eclipse.uml2.uml.Actor;
 import org.eclipse.uml2.uml.Association;

 import org.eclipse.uml2.uml.DataType;

 import org.eclipse.uml2.uml.Type;

+import org.eclipse.uml2.uml.TypedElement;

 import org.eclipse.uml2.uml.UMLPackage;

 

 /**

@@ -55,6 +56,67 @@ public class BlockDropHelper extends ElementHelper {
 		this.editDomain = editDomain;

 	}

 	

+	public Command getDropAsStructureItemOnPart(DropObjectsRequest request, GraphicalEditPart host, IElementType elementType) {

+		String label = "";

+		if (elementType == SysMLElementTypes.PART_PROPERTY) {

+			label = "Create a new Part";

+		}

+		if (elementType == SysMLElementTypes.REFERENCE_PROPERTY) {

+			label = "Create a new Reference";

+		}

+		if (elementType == SysMLElementTypes.ACTOR_PART_PROPERTY) {

+			label = "Create a new ActorPart";

+		}

+		if (elementType == SysMLElementTypes.VALUE_PROPERTY) {

+			label = "Create a new Value";

+		}

+		if (elementType == UMLElementTypes.PROPERTY) {

+			label = "Create a new Property";

+		}

+		CompoundCommand cc = new CompoundCommand(label);

+		

+		Object droppedEObject = request.getObjects().get(0);

+		if (! isValidStructureItemType(droppedEObject, elementType)) {

+			return UnexecutableCommand.INSTANCE;

+		}

+		

+		// Verify target nature

+		EObject target = getHostEObject(host);

+		if ((! (target instanceof TypedElement)) || (((TypedElement) target).getType() == null)) {

+			return UnexecutableCommand.INSTANCE;

+		}

+		

+		// The target type has to be a Block (will hold the created Port)

+		Type targetType = ((TypedElement) target).getType();

+		if (! ((ISpecializationType)SysMLElementTypes.BLOCK).getMatcher().matches(targetType)) {

+			return UnexecutableCommand.INSTANCE;

+		}

+		

+		// Prepare a command for the element creation and the drop in diagram

+		

+		// 1. Prepare creation command

+		ICommand createElementCommand = null;

+		CreateElementRequest createElementRequest = new CreateElementRequest(getEditingDomain(), targetType, elementType);

+		createElementRequest.setParameter(IConfigureCommandFactory.CONFIGURE_COMMAND_FACTORY_ID, new ConfigureFeatureCommandFactory(UMLPackage.eINSTANCE.getTypedElement_Type(), request.getObjects().get(0)));

+		IElementEditService provider = ElementEditServiceUtils.getCommandProvider(targetType);

+		if(provider != null) {

+			createElementCommand = provider.getEditCommand(createElementRequest);

+		}				

+		IAdaptable createElementRequestAdapter = new CreateElementRequestAdapter(createElementRequest);

+			

+		// 2. Prepare the drop command

+		ViewDescriptor descriptor = new ViewDescriptor(createElementRequestAdapter, Node.class, SysMLGraphicalTypes.SHAPE_SYSML_BLOCKPROPERTY_AS_COMPOSITE_ID, ViewUtil.APPEND, true, host.getDiagramPreferencesHint());

+		CreateViewRequest createViewRequest = new CreateViewRequest(descriptor);

+		createViewRequest.setLocation(request.getLocation().getCopy());		

+		Command viewCreateCommand = host.getCommand(createViewRequest);

+

+		// 3. Create the compound command

+		cc.add(new ICommandProxy(createElementCommand));

+		cc.add(viewCreateCommand);

+		

+		return cc;

+	}

+	

 	public Command getDropAsStructureItem(DropObjectsRequest request, GraphicalEditPart host, IElementType elementType) {

 		String label = "";

 		if (elementType == SysMLElementTypes.PART_PROPERTY) {

diff --git a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/utils/PartDropHelper.java b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/utils/PartDropHelper.java
index 979990e671f..b3867c3c673 100644
--- a/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/utils/PartDropHelper.java
+++ b/plugins/sysml/diagram/org.eclipse.papyrus.sysml.diagram.internalblock/src/org/eclipse/papyrus/sysml/diagram/internalblock/utils/PartDropHelper.java
@@ -1,5 +1,5 @@
 /*****************************************************************************

- * Copyright (c) 2011 CEA LIST.

+ * Copyright (c) 2011-2012 CEA LIST.

  *

  * All rights reserved. This program and the accompanying materials

  * are made available under the terms of the Eclipse Public License v1.0

@@ -49,7 +49,7 @@ public class PartDropHelper extends ElementHelper {
 		}

 					

 		// Prepare the view creation command

-		ViewDescriptor descriptor = new ViewDescriptor(new SemanticAdapter((EObject)droppedEObject, null), Node.class, SysMLGraphicalTypes.SHAPE_SYSML_BLOCKPROPERTY_AS_COMPOSITE_ID, ViewUtil.APPEND, true, host.getDiagramPreferencesHint());

+		ViewDescriptor descriptor = new ViewDescriptor(new SemanticAdapter((EObject)droppedEObject, null), Node.class, SysMLGraphicalTypes.SHAPE_SYSML_NESTEDBLOCKPROPERTY_AS_COMPOSITE_ID, ViewUtil.APPEND, true, host.getDiagramPreferencesHint());

 		CreateViewRequest createViewRequest = new CreateViewRequest(descriptor);

 		createViewRequest.setLocation(request.getLocation().getCopy());		

 		Command viewCreateCommand = host.getCommand(createViewRequest);