Merge changes I06cf3cfd,Ibe3678e3 into streams/1.0-maintenance

* changes:
  430548: [Constraints] ConstraintLink not show on diagram after drag and drop from Model Explorer https://bugs.eclipse.org/bugs/show_bug.cgi?id=430548    - Add a test on diagram with handler copy/paste
  430548: [Constraints] ConstraintLink not show on diagram after drag and drop from Model Explorer https://bugs.eclipse.org/bugs/show_bug.cgi?id=430548

9 files changed, 813 insertions, 486 deletions

diff --git a/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz/custom-src/org/eclipse/papyrus/uml/diagram/clazz/custom/policies/ClassDiagramDragDropEditPolicy.java b/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz/custom-src/org/eclipse/papyrus/uml/diagram/clazz/custom/policies/ClassDiagramDragDropEditPolicy.java
index 25c6fa77038..93a36d3e90d 100644
--- a/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz/custom-src/org/eclipse/papyrus/uml/diagram/clazz/custom/policies/ClassDiagramDragDropEditPolicy.java
+++ b/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz/custom-src/org/eclipse/papyrus/uml/diagram/clazz/custom/policies/ClassDiagramDragDropEditPolicy.java
@@ -1,417 +1,483 @@
-/*****************************************************************************

- * Copyright (c) 2009 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:

- *  Patrick Tessier (CEA LIST) Patrick.tessier@cea.fr - Initial API and implementation

- *

- *****************************************************************************/

-package org.eclipse.papyrus.uml.diagram.clazz.custom.policies;

-

-import java.util.Collection;

-import java.util.HashSet;

-import java.util.Iterator;

-import java.util.List;

-import java.util.Set;

-

-import org.eclipse.emf.ecore.EObject;

-import org.eclipse.gef.EditPart;

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

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

-import org.eclipse.gef.requests.ChangeBoundsRequest;

-import org.eclipse.gmf.runtime.common.core.command.CompositeCommand;

-import org.eclipse.gmf.runtime.diagram.core.commands.DeleteCommand;

-import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;

-import org.eclipse.gmf.runtime.diagram.ui.editparts.DiagramEditPart;

-import org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart;

-import org.eclipse.gmf.runtime.diagram.ui.editparts.IPrimaryEditPart;

-import org.eclipse.gmf.runtime.diagram.ui.editparts.ITextAwareEditPart;

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

-import org.eclipse.gmf.runtime.emf.type.core.IElementType;

-import org.eclipse.gmf.runtime.notation.Diagram;

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

-import org.eclipse.papyrus.uml.diagram.clazz.custom.helper.AssociationClassHelper;

-import org.eclipse.papyrus.uml.diagram.clazz.custom.helper.ClassLinkMappingHelper;

-import org.eclipse.papyrus.uml.diagram.clazz.custom.helper.ContainmentHelper;

-import org.eclipse.papyrus.uml.diagram.clazz.custom.helper.CustomMultiAssociationHelper;

-import org.eclipse.papyrus.uml.diagram.clazz.custom.helper.InstanceSpecificationLinkHelper;

-import org.eclipse.papyrus.uml.diagram.clazz.custom.helper.MultiDependencyHelper;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.AssociationClassEditPart;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.AssociationEditPart;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.AssociationNodeEditPart;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.ClassEditPart;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.ClassEditPartCN;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.DependencyEditPart;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.DependencyNodeEditPart;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.EnumerationLiteralEditPart;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.InstanceSpecificationEditPart;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.InstanceSpecificationEditPartCN;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.InstanceSpecificationLinkEditPart;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.InterfaceRealizationEditPart;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.ModelEditPartCN;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.ModelEditPartTN;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.NestedClassForClassEditPart;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.PackageEditPart;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.PackageEditPartCN;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.RedefinableTemplateSignatureEditPart;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.SubstitutionEditPart;

-import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.UsageEditPart;

-import org.eclipse.papyrus.uml.diagram.clazz.part.UMLVisualIDRegistry;

-import org.eclipse.papyrus.uml.diagram.clazz.providers.UMLElementTypes;

-import org.eclipse.papyrus.uml.diagram.common.editpolicies.CommonDiagramDragDropEditPolicy;

-import org.eclipse.uml2.uml.Association;

-import org.eclipse.uml2.uml.AssociationClass;

-import org.eclipse.uml2.uml.Dependency;

-import org.eclipse.uml2.uml.Element;

-import org.eclipse.uml2.uml.InstanceSpecification;

-import org.eclipse.uml2.uml.PackageableElement;

-

-/**

- * The Class ClassDiagramDragDropEditPolicy.

- */

-public class ClassDiagramDragDropEditPolicy extends CommonDiagramDragDropEditPolicy {

-

-	public static final String CONTAINED_CLASS_DROP_TO_COMPARTMENT = "ContainedClassDropToCompartment";

-

-	/**

-	 * Instantiates a new class diagram drag drop edit policy.

-	 */

-	public ClassDiagramDragDropEditPolicy() {

-		super(ClassLinkMappingHelper.getInstance());

-	}

-

-	/**

-	 * {@inheritDoc}

-	 */

-	@Override

-	protected Set<Integer> getDroppableElementVisualId() {

-		Set<Integer> droppableElementsVisualID = new HashSet<Integer>();

-		droppableElementsVisualID.add(DependencyNodeEditPart.VISUAL_ID);

-		droppableElementsVisualID.add(AssociationEditPart.VISUAL_ID);

-		droppableElementsVisualID.add(AssociationClassEditPart.VISUAL_ID);

-		droppableElementsVisualID.add(AssociationNodeEditPart.VISUAL_ID);

-		droppableElementsVisualID.add(NestedClassForClassEditPart.VISUAL_ID);

-		droppableElementsVisualID.add(ClassEditPartCN.VISUAL_ID);

-		droppableElementsVisualID.add(PackageEditPartCN.VISUAL_ID);

-		droppableElementsVisualID.add(ModelEditPartCN.VISUAL_ID);

-		droppableElementsVisualID.add(ModelEditPartTN.VISUAL_ID);

-		droppableElementsVisualID.add(ClassEditPart.VISUAL_ID);

-		droppableElementsVisualID.add(PackageEditPart.VISUAL_ID);

-		droppableElementsVisualID.add(InstanceSpecificationEditPart.VISUAL_ID);

-		droppableElementsVisualID.add(InstanceSpecificationLinkEditPart.VISUAL_ID);

-		return droppableElementsVisualID;

-	}

-

-	/**

-	 * {@inheritedDoc}

-	 */

-	@Override

-	protected Command getSpecificDropCommand(DropObjectsRequest dropRequest, Element semanticLink, int nodeVISUALID, int linkVISUALID) {

-		// respecify for enumeration because this is also an instancespecification

-		if (nodeVISUALID == EnumerationLiteralEditPart.VISUAL_ID) {

-			return new ICommandProxy(getDefaultDropNodeCommand(nodeVISUALID, dropRequest.getLocation(), semanticLink));

-		}

-		if (nodeVISUALID == InstanceSpecificationEditPart.VISUAL_ID || linkVISUALID == InstanceSpecificationLinkEditPart.VISUAL_ID) {

-			return dropInstanceSpecification(dropRequest, semanticLink, linkVISUALID);

-		}

-		if (linkVISUALID == SubstitutionEditPart.VISUAL_ID) {

-			return dropAsNormalBinaryLink(dropRequest, semanticLink, linkVISUALID);

-		}

-		if (linkVISUALID == InterfaceRealizationEditPart.VISUAL_ID) {

-			return dropAsNormalBinaryLink(dropRequest, semanticLink, linkVISUALID);

-		}

-		if (linkVISUALID == AssociationEditPart.VISUAL_ID) {

-			return dropAssociation(dropRequest, semanticLink);

-		}

-		if (linkVISUALID == UsageEditPart.VISUAL_ID) {

-			return dropAsNormalBinaryLink(dropRequest, semanticLink, linkVISUALID);

-		}

-		switch (nodeVISUALID) {

-		case DependencyNodeEditPart.VISUAL_ID:

-			return dropDependency(dropRequest, semanticLink);

-		case AssociationClassEditPart.VISUAL_ID:

-			return dropAssociationClass(dropRequest, semanticLink, nodeVISUALID);

-		case AssociationNodeEditPart.VISUAL_ID:

-			return dropAssociation(dropRequest, semanticLink);

-		case NestedClassForClassEditPart.VISUAL_ID:

-		case ClassEditPartCN.VISUAL_ID:

-		case PackageEditPartCN.VISUAL_ID:

-		case ModelEditPartCN.VISUAL_ID:

-			return dropChildNodeWithContainmentLink(dropRequest, semanticLink, nodeVISUALID);

-		case ModelEditPartTN.VISUAL_ID:

-		case ClassEditPart.VISUAL_ID:

-		case PackageEditPart.VISUAL_ID:

-			return dropTopLevelNodeWithContainmentLink(dropRequest, semanticLink, nodeVISUALID);

-		default:

-			return UnexecutableCommand.INSTANCE;

-		}

-	}

-

-	/**

-	 * drop a instance specification as a link or as a node

-	 *

-	 * @param dropRequest

-	 *            the drop request

-	 * @param semanticLink

-	 *            the element

-	 * @param linkVISUALID

-	 *            the visualID

-	 * @return the command in charge of the drop

-	 */

-	protected Command dropInstanceSpecification(DropObjectsRequest dropRequest, Element semanticLink, int linkVISUALID) {

-		if (semanticLink instanceof InstanceSpecification) {

-			if (((InstanceSpecification) semanticLink).getClassifiers().size() > 0) {

-				if (((InstanceSpecification) semanticLink).getClassifiers().get(0) instanceof Association) {

-					// DROP AS LINK

-					List<InstanceSpecification> endTypes = InstanceSpecificationLinkHelper.getEnds(((InstanceSpecification) semanticLink));

-					if (endTypes.size() > 0) {

-						Element source = endTypes.get(0);

-						Element target = endTypes.get(1);

-						return new ICommandProxy(dropBinaryLink(new CompositeCommand("drop Instance"), source, target, InstanceSpecificationLinkEditPart.VISUAL_ID, dropRequest.getLocation(), semanticLink));

-					}

-				}

-			}

-			// DROP AS A NODE

-			EObject graphicalParent = ((GraphicalEditPart) getHost()).resolveSemanticElement();

-			// Restrict the default node creation to the following cases:

-			// . Take the containment relationship into consideration

-			// . Release the constraint when GraphicalParent is a diagram

-			// drop into diagram

-			if (getHost().getModel() instanceof Diagram) {

-				return new ICommandProxy(getDefaultDropNodeCommand(InstanceSpecificationEditPart.VISUAL_ID, dropRequest.getLocation(), semanticLink));

-				// drop into another editpart

-			} else if ((graphicalParent instanceof Element) && ((Element) graphicalParent).getOwnedElements().contains(semanticLink)) {

-				return new ICommandProxy(getDefaultDropNodeCommand(InstanceSpecificationEditPartCN.VISUAL_ID, dropRequest.getLocation(), semanticLink));

-			}

-		}

-		return UnexecutableCommand.INSTANCE;

-	}

-

-	/**

-	 * {@inheritDoc}

-	 */

-	@Override

-	public int getLinkWithClassVisualID(EObject domainElement) {

-		return UMLVisualIDRegistry.getLinkWithClassVisualID(domainElement);

-	}

-

-	/**

-	 * {@inheritDoc}

-	 */

-	@Override

-	public int getNodeVisualID(View containerView, EObject domainElement) {

-		return UMLVisualIDRegistry.getNodeVisualID(containerView, domainElement);

-	}

-

-	/**

-	 * {@inheritDoc}

-	 */

-	@Override

-	public IElementType getUMLElementType(int elementID) {

-		return UMLElementTypes.getElementType(elementID);

-	}

-

-	/**

-	 * this method has in charge to create command for create an association if the number of

-	 * endtype is superior of 2 a multi association is dropped. if the number of endtype this is

-	 * binary association that is dropped.

-	 *

-	 * @param dropRequest

-	 *            the drop request

-	 * @param semanticLink

-	 *            the semantic link

-	 * @param nodeVISUALID

-	 *            the node visualid

-	 *

-	 * @return the command

-	 */

-	protected Command dropAssociation(DropObjectsRequest dropRequest, Element semanticLink) {

-		Collection<?> endtypes = ClassLinkMappingHelper.getInstance().getSource(semanticLink);

-		if (endtypes.size() == 1) {

-			Element source = (Element) endtypes.toArray()[0];

-			Element target = (Element) endtypes.toArray()[0];

-			return new ICommandProxy(dropBinaryLink(new CompositeCommand("drop Association"), source, target, AssociationEditPart.VISUAL_ID, dropRequest.getLocation(), semanticLink));

-		}

-		if (endtypes.size() == 2) {

-			Element source = (Element) endtypes.toArray()[0];

-			Element target = (Element) endtypes.toArray()[1];

-			return new ICommandProxy(dropBinaryLink(new CompositeCommand("drop Association"), source, target, AssociationEditPart.VISUAL_ID, dropRequest.getLocation(), semanticLink));

-		}

-		if (endtypes.size() > 2) {

-			CustomMultiAssociationHelper associationHelper = new CustomMultiAssociationHelper(getEditingDomain());

-			return associationHelper.dropMutliAssociation((Association) semanticLink, getViewer(), getDiagramPreferencesHint(), dropRequest.getLocation(), ((GraphicalEditPart) getHost()).getNotationView());

-		}

-		return UnexecutableCommand.INSTANCE;

-	}

-

-	/**

-	 * this method send a Command that create views for associationClass

-	 *

-	 * @param dropRequest

-	 *            the drop request

-	 * @param semanticLink

-	 *            the semantic link

-	 * @param nodeVISUALID

-	 *            the node visualid

-	 *

-	 * @return the command

-	 */

-	protected Command dropAssociationClass(DropObjectsRequest dropRequest, Element semanticLink, int nodeVISUALID) {

-		AssociationClassHelper associationClassHelper = new AssociationClassHelper(getEditingDomain());

-		return associationClassHelper.dropAssociationClass((AssociationClass) semanticLink, getViewer(), getDiagramPreferencesHint(), dropRequest.getLocation(), ((GraphicalEditPart) getHost()).getNotationView());

-	}

-

-	/**

-	 * this method send a command to create views to display

-	 *

-	 * @param dropRequest

-	 *            the drop request

-	 * @param semanticLink

-	 *            the semantic link

-	 * @param nodeVISUALID

-	 *            the node visualid

-	 *

-	 * @return the command

-	 */

-	protected Command dropDependency(DropObjectsRequest dropRequest, Element semanticLink) {

-		Collection<?> sources = ClassLinkMappingHelper.getInstance().getSource(semanticLink);

-		Collection<?> targets = ClassLinkMappingHelper.getInstance().getTarget(semanticLink);

-		if (sources.size() == 1 && targets.size() == 1) {

-			Element source = (Element) sources.toArray()[0];

-			Element target = (Element) targets.toArray()[0];

-			return new ICommandProxy(dropBinaryLink(new CompositeCommand("drop Dependency"), source, target, DependencyEditPart.VISUAL_ID, dropRequest.getLocation(), semanticLink));

-		}

-		if (sources.size() > 1 || targets.size() > 1) {

-			MultiDependencyHelper dependencyHelper = new MultiDependencyHelper(getEditingDomain(), getCompositeCommandRegistry());

-			return dependencyHelper.dropMutliDependency((Dependency) semanticLink, getViewer(), getDiagramPreferencesHint(), dropRequest.getLocation(), ((GraphicalEditPart) getHost()).getNotationView());

-		}

-		return UnexecutableCommand.INSTANCE;

-	}

-

-	/**

-	 * Use to drop a class from the outline to the diagram

-	 *

-	 * @param dropRequest

-	 *            is the request for the drop, never be null

-	 * @param semanticObject

-	 *            is the class dropped

-	 * @param nodeVISUALID

-	 *            is the visual ID of the class

-	 * @return a command to execute

-	 */

-	protected Command dropTopLevelNodeWithContainmentLink(DropObjectsRequest dropRequest, Element semanticObject, int nodeVISUALID) {

-		ContainmentHelper containmentHelper = new ContainmentHelper(getEditingDomain());

-		Element owner = semanticObject.getOwner();

-		if (owner == null) {

-			return new ICommandProxy(getDefaultDropNodeCommand(nodeVISUALID, dropRequest.getLocation(), semanticObject));

-		}

-		EditPart ownerEditPart = containmentHelper.findEditPartFor(getViewer().getEditPartRegistry(), owner);

-		if (ownerEditPart != null) {

-			return containmentHelper.outlineDropContainedClass((PackageableElement) semanticObject, getViewer(), getDiagramPreferencesHint(), dropRequest.getLocation(), ((GraphicalEditPart) getHost()).getNotationView());

-		} else {

-			return new ICommandProxy(getDefaultDropNodeCommand(nodeVISUALID, dropRequest.getLocation(), semanticObject));

-		}

-	}

-

-	/**

-	 * Use to drop a class from the diagram to the nestedClassifierCompartment

-	 *

-	 * @param dropRequest

-	 *            is the request for the drop, never be null

-	 * @param droppedElement

-	 *            is the class dropped

-	 * @param nodeVISUALID

-	 *            is the visual ID of the class

-	 * @return a command to execute

-	 */

-	protected Command dropChildNodeWithContainmentLink(DropObjectsRequest dropRequest, Element droppedElement, int nodeVISUALID) {

-		ContainmentHelper containmentHelper = new ContainmentHelper(getEditingDomain());

-		CompositeCommand cc = new CompositeCommand(CONTAINED_CLASS_DROP_TO_COMPARTMENT);

-		cc.add(getDefaultDropNodeCommand(nodeVISUALID, dropRequest.getLocation(), droppedElement));

-		EObject graphicalParent = ((GraphicalEditPart) getHost()).resolveSemanticElement();

-		if (!((droppedElement instanceof Element) && ((Element) graphicalParent).getOwnedElements().contains(droppedElement))) {

-			return UnexecutableCommand.INSTANCE;

-		}

-		if (containmentHelper.findEditPartFor(getViewer().getEditPartRegistry(), droppedElement) != null) {

-			EditPart editpart = containmentHelper.findEditPartFor(getViewer().getEditPartRegistry(), droppedElement);

-			View droppedView = (View) (editpart.getModel());

-			containmentHelper.deleteIncomingContainmentLinksFor(cc, droppedView);

-			// Delete the dropped element existing outside the compartment

-			cc.add(new DeleteCommand(getEditingDomain(), droppedView));

-		}

-		return new ICommandProxy(cc);

-	}

-

-	/**

-	 * call the mechanism to drop a binary link without specific type

-	 *

-	 * @param dropRequest

-	 *            the drop request

-	 * @param semanticLink

-	 *            the element that is the interfaceRealization

-	 * @param linkVISUALID

-	 *            the visualID of the interfaceRealization

-	 * @return the command containing the creation of the view ffor a link

-	 */

-	protected Command dropAsNormalBinaryLink(DropObjectsRequest dropRequest, Element semanticLink, int linkVISUALID) {

-		Collection<?> sources = linkmappingHelper.getSource(semanticLink);

-		Collection<?> targets = linkmappingHelper.getTarget(semanticLink);

-		if (sources.size() == 0 || targets.size() == 0) {

-			return UnexecutableCommand.INSTANCE;

-		}

-		Element source = (Element) sources.toArray()[0];

-		Element target = (Element) targets.toArray()[0];

-		CompositeCommand cc = new CompositeCommand("");

-		dropBinaryLink(cc, source, target, linkVISUALID, dropRequest.getLocation(), semanticLink);

-		return new ICommandProxy(cc);

-	}

-

-	/**

-	 *

-	 * @see org.eclipse.gmf.runtime.diagram.ui.editpolicies.DiagramDragDropEditPolicy#getDropCommand(org.eclipse.gef.requests.ChangeBoundsRequest)

-	 *

-	 */

-	@Override

-	protected Command getDropCommand(ChangeBoundsRequest request) {

-		// this is a drop done by user internal to the diagram

-		// prevent from the drop intra diagram of a template signature into the diagram

-		Iterator<?> editPartsIter = request.getEditParts().iterator();

-		while (editPartsIter.hasNext()) {

-			if (editPartsIter.next() instanceof RedefinableTemplateSignatureEditPart) {

-				return UnexecutableCommand.INSTANCE;

-			}

-		}

-		// in the case of labelEditPart the command add can launch null pointer exception

-		editPartsIter = request.getEditParts().iterator();

-		boolean containsLabelEditpart = false;

-		while (editPartsIter.hasNext() && !containsLabelEditpart) {

-			EditPart currentEditPart = (EditPart) editPartsIter.next();

-			if (currentEditPart instanceof ITextAwareEditPart && currentEditPart instanceof IPrimaryEditPart) {

-				containsLabelEditpart = true;

-			}

-		}

-		// the addCommand of a label edit part into the diagram raises an null pointer exception.

-		// it is due to the label has not constraint, used during the AddCommand

-		if (containsLabelEditpart && getHost() instanceof DiagramEditPart) {

-			return UnexecutableCommand.INSTANCE;

-		} else {

-			// normal case

-			ChangeBoundsRequest req = new ChangeBoundsRequest(REQ_ADD);

-			req.setEditParts(request.getEditParts());

-			req.setMoveDelta(request.getMoveDelta());

-			req.setSizeDelta(request.getSizeDelta());

-			req.setLocation(request.getLocation());

-			req.setResizeDirection(request.getResizeDirection());

-			Command cmd = getHost().getCommand(req);

-			if (cmd == null || !cmd.canExecute()) {

-				return getDropObjectsCommand(castToDropObjectsRequest(request));

-			}

-			return cmd;

-		}

-	}

-}

+/*****************************************************************************
+ * Copyright (c) 2009 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:
+ *  Patrick Tessier (CEA LIST) Patrick.tessier@cea.fr - Initial API and implementation
+ *
+ *****************************************************************************/
+package org.eclipse.papyrus.uml.diagram.clazz.custom.policies;
+
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Set;
+
+import org.eclipse.draw2d.geometry.Point;
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.gef.EditPart;
+import org.eclipse.gef.commands.Command;
+import org.eclipse.gef.commands.UnexecutableCommand;
+import org.eclipse.gef.requests.ChangeBoundsRequest;
+import org.eclipse.gmf.runtime.common.core.command.CompositeCommand;
+import org.eclipse.gmf.runtime.common.core.command.ICommand;
+import org.eclipse.gmf.runtime.diagram.core.commands.DeleteCommand;
+import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
+import org.eclipse.gmf.runtime.diagram.ui.editparts.DiagramEditPart;
+import org.eclipse.gmf.runtime.diagram.ui.editparts.GraphicalEditPart;
+import org.eclipse.gmf.runtime.diagram.ui.editparts.IPrimaryEditPart;
+import org.eclipse.gmf.runtime.diagram.ui.editparts.ITextAwareEditPart;
+import org.eclipse.gmf.runtime.diagram.ui.editparts.ListCompartmentEditPart;
+import org.eclipse.gmf.runtime.diagram.ui.requests.DropObjectsRequest;
+import org.eclipse.gmf.runtime.emf.type.core.IElementType;
+import org.eclipse.gmf.runtime.notation.Diagram;
+import org.eclipse.gmf.runtime.notation.View;
+import org.eclipse.papyrus.commands.wrappers.GMFtoGEFCommandWrapper;
+import org.eclipse.papyrus.uml.diagram.clazz.custom.helper.AssociationClassHelper;
+import org.eclipse.papyrus.uml.diagram.clazz.custom.helper.ClassLinkMappingHelper;
+import org.eclipse.papyrus.uml.diagram.clazz.custom.helper.ContainmentHelper;
+import org.eclipse.papyrus.uml.diagram.clazz.custom.helper.CustomMultiAssociationHelper;
+import org.eclipse.papyrus.uml.diagram.clazz.custom.helper.InstanceSpecificationLinkHelper;
+import org.eclipse.papyrus.uml.diagram.clazz.custom.helper.MultiDependencyHelper;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.AssociationClassEditPart;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.AssociationEditPart;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.AssociationNodeEditPart;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.ClassEditPart;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.ClassEditPartCN;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.ConstraintEditPart;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.DependencyEditPart;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.DependencyNodeEditPart;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.EnumerationLiteralEditPart;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.InstanceSpecificationEditPart;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.InstanceSpecificationEditPartCN;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.InstanceSpecificationLinkEditPart;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.InterfaceRealizationEditPart;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.ModelEditPartCN;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.ModelEditPartTN;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.NestedClassForClassEditPart;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.PackageEditPart;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.PackageEditPartCN;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.RedefinableTemplateSignatureEditPart;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.SubstitutionEditPart;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.UsageEditPart;
+import org.eclipse.papyrus.uml.diagram.clazz.part.UMLVisualIDRegistry;
+import org.eclipse.papyrus.uml.diagram.clazz.providers.UMLElementTypes;
+import org.eclipse.papyrus.uml.diagram.common.editpolicies.CommonDiagramDragDropEditPolicy;
+import org.eclipse.papyrus.uml.diagram.common.strategy.paste.ShowConstraintContextLink;
+import org.eclipse.uml2.uml.Association;
+import org.eclipse.uml2.uml.AssociationClass;
+import org.eclipse.uml2.uml.Constraint;
+import org.eclipse.uml2.uml.Dependency;
+import org.eclipse.uml2.uml.Element;
+import org.eclipse.uml2.uml.InstanceSpecification;
+import org.eclipse.uml2.uml.PackageableElement;
+
+/**
+ * The Class ClassDiagramDragDropEditPolicy.
+ */
+public class ClassDiagramDragDropEditPolicy extends CommonDiagramDragDropEditPolicy {
+
+	public static final String CONTAINED_CLASS_DROP_TO_COMPARTMENT = "ContainedClassDropToCompartment";
+
+	/**
+	 * Instantiates a new class diagram drag drop edit policy.
+	 */
+	public ClassDiagramDragDropEditPolicy() {
+		super(ClassLinkMappingHelper.getInstance());
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	protected Set<Integer> getDroppableElementVisualId() {
+		Set<Integer> droppableElementsVisualID = new HashSet<Integer>();
+		droppableElementsVisualID.add(DependencyNodeEditPart.VISUAL_ID);
+		droppableElementsVisualID.add(AssociationEditPart.VISUAL_ID);
+		droppableElementsVisualID.add(AssociationClassEditPart.VISUAL_ID);
+		droppableElementsVisualID.add(AssociationNodeEditPart.VISUAL_ID);
+		droppableElementsVisualID.add(NestedClassForClassEditPart.VISUAL_ID);
+		droppableElementsVisualID.add(ClassEditPartCN.VISUAL_ID);
+		droppableElementsVisualID.add(PackageEditPartCN.VISUAL_ID);
+		droppableElementsVisualID.add(ModelEditPartCN.VISUAL_ID);
+		droppableElementsVisualID.add(ModelEditPartTN.VISUAL_ID);
+		droppableElementsVisualID.add(ClassEditPart.VISUAL_ID);
+		droppableElementsVisualID.add(PackageEditPart.VISUAL_ID);
+		droppableElementsVisualID.add(InstanceSpecificationEditPart.VISUAL_ID);
+		droppableElementsVisualID.add(InstanceSpecificationLinkEditPart.VISUAL_ID);
+		droppableElementsVisualID.add(ConstraintEditPart.VISUAL_ID);
+		return droppableElementsVisualID;
+	}
+
+	/**
+	 * {@inheritedDoc}
+	 */
+	@Override
+	protected Command getSpecificDropCommand(DropObjectsRequest dropRequest, Element semanticLink, int nodeVISUALID, int linkVISUALID) {
+		// respecify for enumeration because this is also an instancespecification
+		if (nodeVISUALID == EnumerationLiteralEditPart.VISUAL_ID) {
+			return new ICommandProxy(getDefaultDropNodeCommand(nodeVISUALID, dropRequest.getLocation(), semanticLink));
+		}
+		if (nodeVISUALID == InstanceSpecificationEditPart.VISUAL_ID || linkVISUALID == InstanceSpecificationLinkEditPart.VISUAL_ID) {
+			return dropInstanceSpecification(dropRequest, semanticLink, linkVISUALID);
+		}
+		if (linkVISUALID == SubstitutionEditPart.VISUAL_ID) {
+			return dropAsNormalBinaryLink(dropRequest, semanticLink, linkVISUALID);
+		}
+		if (linkVISUALID == InterfaceRealizationEditPart.VISUAL_ID) {
+			return dropAsNormalBinaryLink(dropRequest, semanticLink, linkVISUALID);
+		}
+		if (linkVISUALID == AssociationEditPart.VISUAL_ID) {
+			return dropAssociation(dropRequest, semanticLink);
+		}
+		if (linkVISUALID == UsageEditPart.VISUAL_ID) {
+			return dropAsNormalBinaryLink(dropRequest, semanticLink, linkVISUALID);
+		}
+		switch (nodeVISUALID) {
+		case DependencyNodeEditPart.VISUAL_ID:
+			return dropDependency(dropRequest, semanticLink);
+		case AssociationClassEditPart.VISUAL_ID:
+			return dropAssociationClass(dropRequest, semanticLink, nodeVISUALID);
+		case AssociationNodeEditPart.VISUAL_ID:
+			return dropAssociation(dropRequest, semanticLink);
+		case NestedClassForClassEditPart.VISUAL_ID:
+		case ClassEditPartCN.VISUAL_ID:
+
+		case PackageEditPartCN.VISUAL_ID:
+		case ModelEditPartCN.VISUAL_ID:
+			return dropChildNodeWithContainmentLink(dropRequest, semanticLink, nodeVISUALID);
+		case ModelEditPartTN.VISUAL_ID:
+		case ClassEditPart.VISUAL_ID:
+		case PackageEditPart.VISUAL_ID:
+			return dropTopLevelNodeWithContainmentLink(dropRequest, semanticLink, nodeVISUALID);
+		case ConstraintEditPart.VISUAL_ID:
+			return dropConstraintNode(dropRequest, (Constraint) semanticLink, nodeVISUALID);
+		default:
+			return UnexecutableCommand.INSTANCE;
+		}
+	}
+
+	/**
+	 * drop a instance specification as a link or as a node
+	 *
+	 * @param dropRequest
+	 *            the drop request
+	 * @param semanticLink
+	 *            the element
+	 * @param linkVISUALID
+	 *            the visualID
+	 * @return the command in charge of the drop
+	 */
+	protected Command dropInstanceSpecification(DropObjectsRequest dropRequest, Element semanticLink, int linkVISUALID) {
+		if (semanticLink instanceof InstanceSpecification) {
+			if (((InstanceSpecification) semanticLink).getClassifiers().size() > 0) {
+				if (((InstanceSpecification) semanticLink).getClassifiers().get(0) instanceof Association) {
+					// DROP AS LINK
+					List<InstanceSpecification> endTypes = InstanceSpecificationLinkHelper.getEnds(((InstanceSpecification) semanticLink));
+					if (endTypes.size() > 0) {
+						Element source = endTypes.get(0);
+						Element target = endTypes.get(1);
+						return new ICommandProxy(dropBinaryLink(new CompositeCommand("drop Instance"), source, target, InstanceSpecificationLinkEditPart.VISUAL_ID, dropRequest.getLocation(), semanticLink));
+					}
+				}
+			}
+			// DROP AS A NODE
+			EObject graphicalParent = ((GraphicalEditPart) getHost()).resolveSemanticElement();
+			// Restrict the default node creation to the following cases:
+			// . Take the containment relationship into consideration
+			// . Release the constraint when GraphicalParent is a diagram
+			// drop into diagram
+			if (getHost().getModel() instanceof Diagram) {
+				return new ICommandProxy(getDefaultDropNodeCommand(InstanceSpecificationEditPart.VISUAL_ID, dropRequest.getLocation(), semanticLink));
+				// drop into another editpart
+			} else if ((graphicalParent instanceof Element) && ((Element) graphicalParent).getOwnedElements().contains(semanticLink)) {
+				return new ICommandProxy(getDefaultDropNodeCommand(InstanceSpecificationEditPartCN.VISUAL_ID, dropRequest.getLocation(), semanticLink));
+			}
+		}
+		return UnexecutableCommand.INSTANCE;
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public int getLinkWithClassVisualID(EObject domainElement) {
+		return UMLVisualIDRegistry.getLinkWithClassVisualID(domainElement);
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public int getNodeVisualID(View containerView, EObject domainElement) {
+		return UMLVisualIDRegistry.getNodeVisualID(containerView, domainElement);
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public IElementType getUMLElementType(int elementID) {
+		return UMLElementTypes.getElementType(elementID);
+	}
+
+	/**
+	 * this method has in charge to create command for create an association if the number of
+	 * endtype is superior of 2 a multi association is dropped. if the number of endtype this is
+	 * binary association that is dropped.
+	 *
+	 * @param dropRequest
+	 *            the drop request
+	 * @param semanticLink
+	 *            the semantic link
+	 * @param nodeVISUALID
+	 *            the node visualid
+	 *
+	 * @return the command
+	 */
+	protected Command dropAssociation(DropObjectsRequest dropRequest, Element semanticLink) {
+		Collection<?> endtypes = ClassLinkMappingHelper.getInstance().getSource(semanticLink);
+		if (endtypes.size() == 1) {
+			Element source = (Element) endtypes.toArray()[0];
+			Element target = (Element) endtypes.toArray()[0];
+			return new ICommandProxy(dropBinaryLink(new CompositeCommand("drop Association"), source, target, AssociationEditPart.VISUAL_ID, dropRequest.getLocation(), semanticLink));
+		}
+		if (endtypes.size() == 2) {
+			Element source = (Element) endtypes.toArray()[0];
+			Element target = (Element) endtypes.toArray()[1];
+			return new ICommandProxy(dropBinaryLink(new CompositeCommand("drop Association"), source, target, AssociationEditPart.VISUAL_ID, dropRequest.getLocation(), semanticLink));
+		}
+		if (endtypes.size() > 2) {
+			CustomMultiAssociationHelper associationHelper = new CustomMultiAssociationHelper(getEditingDomain());
+			return associationHelper.dropMutliAssociation((Association) semanticLink, getViewer(), getDiagramPreferencesHint(), dropRequest.getLocation(), ((GraphicalEditPart) getHost()).getNotationView());
+		}
+		return UnexecutableCommand.INSTANCE;
+	}
+
+	/**
+	 * this method send a Command that create views for associationClass
+	 *
+	 * @param dropRequest
+	 *            the drop request
+	 * @param semanticLink
+	 *            the semantic link
+	 * @param nodeVISUALID
+	 *            the node visualid
+	 *
+	 * @return the command
+	 */
+	protected Command dropAssociationClass(DropObjectsRequest dropRequest, Element semanticLink, int nodeVISUALID) {
+		AssociationClassHelper associationClassHelper = new AssociationClassHelper(getEditingDomain());
+		return associationClassHelper.dropAssociationClass((AssociationClass) semanticLink, getViewer(), getDiagramPreferencesHint(), dropRequest.getLocation(), ((GraphicalEditPart) getHost()).getNotationView());
+	}
+
+	/**
+	 * this method send a command to create views to display
+	 *
+	 * @param dropRequest
+	 *            the drop request
+	 * @param semanticLink
+	 *            the semantic link
+	 * @param nodeVISUALID
+	 *            the node visualid
+	 *
+	 * @return the command
+	 */
+	protected Command dropDependency(DropObjectsRequest dropRequest, Element semanticLink) {
+		Collection<?> sources = ClassLinkMappingHelper.getInstance().getSource(semanticLink);
+		Collection<?> targets = ClassLinkMappingHelper.getInstance().getTarget(semanticLink);
+		if (sources.size() == 1 && targets.size() == 1) {
+			Element source = (Element) sources.toArray()[0];
+			Element target = (Element) targets.toArray()[0];
+			return new ICommandProxy(dropBinaryLink(new CompositeCommand("drop Dependency"), source, target, DependencyEditPart.VISUAL_ID, dropRequest.getLocation(), semanticLink));
+		}
+		if (sources.size() > 1 || targets.size() > 1) {
+			MultiDependencyHelper dependencyHelper = new MultiDependencyHelper(getEditingDomain(), getCompositeCommandRegistry());
+			return dependencyHelper.dropMutliDependency((Dependency) semanticLink, getViewer(), getDiagramPreferencesHint(), dropRequest.getLocation(), ((GraphicalEditPart) getHost()).getNotationView());
+		}
+		return UnexecutableCommand.INSTANCE;
+	}
+
+	/**
+	 * Use to drop a class from the outline to the diagram
+	 *
+	 * @param dropRequest
+	 *            is the request for the drop, never be null
+	 * @param semanticObject
+	 *            is the class dropped
+	 * @param nodeVISUALID
+	 *            is the visual ID of the class
+	 * @return a command to execute
+	 */
+	protected Command dropTopLevelNodeWithContainmentLink(DropObjectsRequest dropRequest, Element semanticObject, int nodeVISUALID) {
+		ContainmentHelper containmentHelper = new ContainmentHelper(getEditingDomain());
+		Element owner = semanticObject.getOwner();
+		if (owner == null) {
+			return new ICommandProxy(getDefaultDropNodeCommand(nodeVISUALID, dropRequest.getLocation(), semanticObject));
+		}
+		EditPart ownerEditPart = containmentHelper.findEditPartFor(getViewer().getEditPartRegistry(), owner);
+		if (ownerEditPart != null) {
+			return containmentHelper.outlineDropContainedClass((PackageableElement) semanticObject, getViewer(), getDiagramPreferencesHint(), dropRequest.getLocation(), ((GraphicalEditPart) getHost()).getNotationView());
+		} else {
+			return new ICommandProxy(getDefaultDropNodeCommand(nodeVISUALID, dropRequest.getLocation(), semanticObject));
+		}
+	}
+
+	/**
+	 * Use to drop a class from the diagram to the nestedClassifierCompartment
+	 *
+	 * @param dropRequest
+	 *            is the request for the drop, never be null
+	 * @param droppedElement
+	 *            is the class dropped
+	 * @param nodeVISUALID
+	 *            is the visual ID of the class
+	 * @return a command to execute
+	 */
+	protected Command dropChildNodeWithContainmentLink(DropObjectsRequest dropRequest, Element droppedElement, int nodeVISUALID) {
+		ContainmentHelper containmentHelper = new ContainmentHelper(getEditingDomain());
+		CompositeCommand cc = new CompositeCommand(CONTAINED_CLASS_DROP_TO_COMPARTMENT);
+		cc.add(getDefaultDropNodeCommand(nodeVISUALID, dropRequest.getLocation(), droppedElement));
+		EObject graphicalParent = ((GraphicalEditPart) getHost()).resolveSemanticElement();
+		if (!((droppedElement instanceof Element) && ((Element) graphicalParent).getOwnedElements().contains(droppedElement))) {
+			return UnexecutableCommand.INSTANCE;
+		}
+		if (containmentHelper.findEditPartFor(getViewer().getEditPartRegistry(), droppedElement) != null) {
+			EditPart editpart = containmentHelper.findEditPartFor(getViewer().getEditPartRegistry(), droppedElement);
+			View droppedView = (View) (editpart.getModel());
+			containmentHelper.deleteIncomingContainmentLinksFor(cc, droppedView);
+			// Delete the dropped element existing outside the compartment
+			cc.add(new DeleteCommand(getEditingDomain(), droppedView));
+		}
+		return new ICommandProxy(cc);
+	}
+
+
+	/**
+	 * Use to drop a constraint, will also display the contextlink
+	 * 
+	 * @param dropRequest
+	 * @param droppedConstraint
+	 * @param nodeVISUALID
+	 * @return
+	 */
+	protected Command dropConstraintNode(DropObjectsRequest dropRequest, Constraint droppedConstraint, int nodeVISUALID) {
+		ICommand dropConstraintCommand = getDefaultDropNodeCommand(nodeVISUALID, dropRequest.getLocation(), droppedConstraint, dropRequest);
+		if (droppedConstraint.getContext() != null) {
+			ShowConstraintContextLink showConstraintContextLink = new ShowConstraintContextLink(getEditingDomain(), (GraphicalEditPart) getHost(), droppedConstraint);
+			dropConstraintCommand = dropConstraintCommand.compose(showConstraintContextLink);
+		}
+		return GMFtoGEFCommandWrapper.wrap(dropConstraintCommand);
+	}
+
+
+
+	/**
+	 * call the mechanism to drop a binary link without specific type
+	 *
+	 * @param dropRequest
+	 *            the drop request
+	 * @param semanticLink
+	 *            the element that is the interfaceRealization
+	 * @param linkVISUALID
+	 *            the visualID of the interfaceRealization
+	 * @return the command containing the creation of the view ffor a link
+	 */
+	protected Command dropAsNormalBinaryLink(DropObjectsRequest dropRequest, Element semanticLink, int linkVISUALID) {
+		Collection<?> sources = linkmappingHelper.getSource(semanticLink);
+		Collection<?> targets = linkmappingHelper.getTarget(semanticLink);
+		if (sources.size() == 0 || targets.size() == 0) {
+			return UnexecutableCommand.INSTANCE;
+		}
+		Element source = (Element) sources.toArray()[0];
+		Element target = (Element) targets.toArray()[0];
+		CompositeCommand cc = new CompositeCommand("");
+		dropBinaryLink(cc, source, target, linkVISUALID, dropRequest.getLocation(), semanticLink);
+		return new ICommandProxy(cc);
+	}
+
+	/**
+	 *
+	 * @see org.eclipse.gmf.runtime.diagram.ui.editpolicies.DiagramDragDropEditPolicy#getDropCommand(org.eclipse.gef.requests.ChangeBoundsRequest)
+	 *
+	 */
+	@Override
+	protected Command getDropCommand(ChangeBoundsRequest request) {
+		// this is a drop done by user internal to the diagram
+		// prevent from the drop intra diagram of a template signature into the diagram
+		Iterator<?> editPartsIter = request.getEditParts().iterator();
+		while (editPartsIter.hasNext()) {
+			if (editPartsIter.next() instanceof RedefinableTemplateSignatureEditPart) {
+				return UnexecutableCommand.INSTANCE;
+			}
+		}
+		// in the case of labelEditPart the command add can launch null pointer exception
+		editPartsIter = request.getEditParts().iterator();
+		boolean containsLabelEditpart = false;
+		while (editPartsIter.hasNext() && !containsLabelEditpart) {
+			EditPart currentEditPart = (EditPart) editPartsIter.next();
+			if (currentEditPart instanceof ITextAwareEditPart && currentEditPart instanceof IPrimaryEditPart) {
+				containsLabelEditpart = true;
+			}
+		}
+		// the addCommand of a label edit part into the diagram raises an null pointer exception.
+		// it is due to the label has not constraint, used during the AddCommand
+		if (containsLabelEditpart && getHost() instanceof DiagramEditPart) {
+			return UnexecutableCommand.INSTANCE;
+		} else {
+			// normal case
+			ChangeBoundsRequest req = new ChangeBoundsRequest(REQ_ADD);
+			req.setEditParts(request.getEditParts());
+			req.setMoveDelta(request.getMoveDelta());
+			req.setSizeDelta(request.getSizeDelta());
+			req.setLocation(request.getLocation());
+			req.setResizeDirection(request.getResizeDirection());
+			Command cmd = getHost().getCommand(req);
+			if (cmd == null || !cmd.canExecute()) {
+				return getDropObjectsCommand(castToDropObjectsRequest(request));
+			}
+			return cmd;
+		}
+	}
+
+	/**
+	 * @Overrided org.eclipse.papyrus.uml.diagram.common.editpolicies.CommonDiagramDragDropEditPolicy to resolve cause of repeated definition
+	 *            of attributes shown outside classes when dragged back
+	 *
+	 * @param hostEP
+	 *            The host edit part which will be the parent of the new node
+	 * @param semanticHint
+	 *            the semantic hint of the view to create
+	 * @param location
+	 *            the drop location
+	 * @param droppedObject
+	 *            the object to drop
+	 * @param request
+	 *            the drop request (use to test ctrl key)
+	 * @return the creation node command
+	 */
+	@Override
+	protected ICommand getDefaultDropNodeCommand(EditPart hostEP, String semanticHint, Point absoluteLocation, EObject droppedObject, DropObjectsRequest request) {
+		GraphicalEditPart parent = (GraphicalEditPart) getHost();
+		if (parent instanceof ListCompartmentEditPart) {
+			@SuppressWarnings("unchecked")
+			List<EditPart> allChildren = parent.getChildren();
+			for (EditPart nextChild : allChildren) {
+				if (!(nextChild instanceof GraphicalEditPart)) {
+					continue;
+				}
+				EObject nextChildSemantic = ((GraphicalEditPart) nextChild).resolveSemanticElement();
+				if (nextChildSemantic == droppedObject) {
+					return org.eclipse.gmf.runtime.common.core.command.UnexecutableCommand.INSTANCE;
+				}
+			}
+		}
+		return super.getDefaultDropNodeCommand(hostEP, semanticHint, absoluteLocation, droppedObject, request);
+	}
+}
diff --git a/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.common/src/org/eclipse/papyrus/uml/diagram/common/strategy/paste/ShowConstraintContextLink.java b/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.common/src/org/eclipse/papyrus/uml/diagram/common/strategy/paste/ShowConstraintContextLink.java
index 5ddc5fb3a67..0e6be93585d 100644
--- a/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.common/src/org/eclipse/papyrus/uml/diagram/common/strategy/paste/ShowConstraintContextLink.java
+++ b/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.common/src/org/eclipse/papyrus/uml/diagram/common/strategy/paste/ShowConstraintContextLink.java
@@ -62,9 +62,22 @@ public class ShowConstraintContextLink extends AbstractTransactionalCommand {
 		this.constraint = (Constraint) constraintView.getElement();
 	}
 
+	/**
+	 * Show the <<context>> link between a constraint and its context
+	 *
+	 * @param domain
+	 * @param targetEditPart
+	 * @param constraint
+	 */
+	public ShowConstraintContextLink(TransactionalEditingDomain domain, GraphicalEditPart targetEditPart, Constraint constraint) {
+		super(domain, "Show Constraint Context Link", null);
+		this.diagramEP = DiagramEditPartsUtil.getDiagramEditPart(targetEditPart);
+		this.constraint = constraint;
+	}
+
 	/*
 	 * (non-Javadoc)
-	 *
+	 * 
 	 * @see
 	 * org.eclipse.gmf.runtime.emf.commands.core.command.AbstractTransactionalCommand#doExecuteWithResult(org.eclipse.core.runtime.IProgressMonitor,
 	 * org.eclipse.core.runtime.IAdaptable)
diff --git a/tests/junit/plugins/junit/org.eclipse.papyrus.junit.utils/src/org/eclipse/papyrus/junit/utils/rules/PapyrusEditorFixture.java b/tests/junit/plugins/junit/org.eclipse.papyrus.junit.utils/src/org/eclipse/papyrus/junit/utils/rules/PapyrusEditorFixture.java
index de24d1c0d43..3fbafa43d15 100644
--- a/tests/junit/plugins/junit/org.eclipse.papyrus.junit.utils/src/org/eclipse/papyrus/junit/utils/rules/PapyrusEditorFixture.java
+++ b/tests/junit/plugins/junit/org.eclipse.papyrus.junit.utils/src/org/eclipse/papyrus/junit/utils/rules/PapyrusEditorFixture.java
@@ -530,6 +530,10 @@ public class PapyrusEditorFixture extends AbstractModelFixture<TransactionalEdit
 		editPart.getViewer().getSelectionManager().appendSelection(editPart);
 	}
 
+	public void deselect(EditPart editPart) {
+		editPart.getViewer().getSelectionManager().deselect(editPart);
+	}
+
 	public PaletteViewer getPalette() {
 		return getPalette(getActiveDiagramEditor());
 	}
diff --git a/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/META-INF/MANIFEST.MF b/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/META-INF/MANIFEST.MF
index 99f18232dda..2e7920628c3 100644
--- a/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/META-INF/MANIFEST.MF
+++ b/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/META-INF/MANIFEST.MF
@@ -1,34 +1,37 @@
-Manifest-Version: 1.0

-Require-Bundle: org.eclipse.ui,

- org.eclipse.core.runtime,

- org.eclipse.papyrus.infra.core;bundle-version="1.0.2",

- org.eclipse.papyrus.editor;bundle-version="1.0.2",

- org.eclipse.papyrus.uml.diagram.clazz;bundle-version="1.0.2",

- org.eclipse.gmf.runtime.diagram.ui.resources.editor;bundle-version="1.2.0",

- org.eclipse.papyrus.uml.diagram.common;bundle-version="1.0.2",

- org.eclipse.gmf.runtime.diagram.ui;bundle-version="1.5.0",

- org.eclipse.papyrus.infra.gmfdiag.common;bundle-version="1.0.2",

- org.eclipse.papyrus.uml.diagram.tests;bundle-version="1.0.2",

- org.eclipse.uml2.uml;bundle-version="4.0.0",

- org.eclipse.papyrus.infra.gmfdiag.commands;bundle-version="1.0.2",

- org.eclipse.papyrus.infra.core.sasheditor;bundle-version="1.0.2",

- org.junit;bundle-version="4.10.0",

- org.eclipse.papyrus.junit.framework;bundle-version="1.0.2",

- org.eclipse.gmf.tooling.runtime,

- org.eclipse.ui.ide;bundle-version="3.10.0",

- org.eclipse.emf.common.ui;bundle-version="2.9.0",

- org.eclipse.papyrus.infra.widgets;bundle-version="1.0.2",

- org.eclipse.papyrus.junit.utils;bundle-version="1.0.2"

-Export-Package: org.eclipse.papyrus.diagram.clazz.test.createFromPalette,

- org.eclipse.papyrus.uml.diagram.clazz.test,

- org.eclipse.papyrus.uml.diagram.clazz.test.canonical,

- org.eclipse.papyrus.uml.diagram.clazz.test.load

-Bundle-Vendor: %providerName

-Bundle-ActivationPolicy: lazy

-Bundle-Version: 1.0.2.qualifier

-Bundle-Name: %pluginName

-Bundle-Localization: plugin

-Bundle-ManifestVersion: 2

-Bundle-Activator: org.eclipse.papyrus.uml.diagram.clazz.test.Activator

-Bundle-SymbolicName: org.eclipse.papyrus.uml.diagram.clazz.tests

-Bundle-RequiredExecutionEnvironment: J2SE-1.5

+Manifest-Version: 1.0
+Require-Bundle: org.eclipse.ui,
+ org.eclipse.core.runtime,
+ org.eclipse.papyrus.infra.core;bundle-version="1.0.2",
+ org.eclipse.papyrus.editor;bundle-version="1.0.2",
+ org.eclipse.papyrus.uml.diagram.clazz;bundle-version="1.0.2",
+ org.eclipse.gmf.runtime.diagram.ui.resources.editor;bundle-version="1.2.0",
+ org.eclipse.papyrus.uml.diagram.common;bundle-version="1.0.2",
+ org.eclipse.gmf.runtime.diagram.ui;bundle-version="1.5.0",
+ org.eclipse.papyrus.infra.gmfdiag.common;bundle-version="1.0.2",
+ org.eclipse.papyrus.uml.diagram.tests;bundle-version="1.0.2",
+ org.eclipse.uml2.uml;bundle-version="4.0.0",
+ org.eclipse.papyrus.infra.gmfdiag.commands;bundle-version="1.0.2",
+ org.eclipse.papyrus.infra.core.sasheditor;bundle-version="1.0.2",
+ org.junit;bundle-version="4.10.0",
+ org.eclipse.papyrus.junit.framework;bundle-version="1.0.2",
+ org.eclipse.gmf.tooling.runtime,
+ org.eclipse.ui.ide;bundle-version="3.10.0",
+ org.eclipse.emf.common.ui;bundle-version="2.9.0",
+ org.eclipse.papyrus.infra.widgets;bundle-version="1.0.2",
+ org.eclipse.papyrus.junit.utils;bundle-version="1.0.2",
+ org.eclipse.papyrus.infra.emf;bundle-version="1.0.2",
+ org.eclipse.papyrus.infra.services.openelement;bundle-version="1.0.2",
+ org.eclipse.core.expressions
+Export-Package: org.eclipse.papyrus.diagram.clazz.test.createFromPalette,
+ org.eclipse.papyrus.uml.diagram.clazz.test,
+ org.eclipse.papyrus.uml.diagram.clazz.test.canonical,
+ org.eclipse.papyrus.uml.diagram.clazz.test.load
+Bundle-Vendor: %providerName
+Bundle-ActivationPolicy: lazy
+Bundle-Version: 1.0.2.qualifier
+Bundle-Name: %pluginName
+Bundle-Localization: plugin
+Bundle-ManifestVersion: 2
+Bundle-Activator: org.eclipse.papyrus.uml.diagram.clazz.test.Activator
+Bundle-SymbolicName: org.eclipse.papyrus.uml.diagram.clazz.tests
+Bundle-RequiredExecutionEnvironment: J2SE-1.5
diff --git a/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/model/copyPaste/ConstraintPasteStrategy.di b/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/model/copyPaste/ConstraintPasteStrategy.di
new file mode 100644
index 00000000000..bf9abab340f
--- /dev/null
+++ b/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/model/copyPaste/ConstraintPasteStrategy.di
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xmi:XMI xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI"/>
diff --git a/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/model/copyPaste/ConstraintPasteStrategy.notation b/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/model/copyPaste/ConstraintPasteStrategy.notation
new file mode 100644
index 00000000000..c7eb0c853b6
--- /dev/null
+++ b/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/model/copyPaste/ConstraintPasteStrategy.notation
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<notation:Diagram xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:notation="http://www.eclipse.org/gmf/runtime/1.0.2/notation" xmlns:style="http://www.eclipse.org/papyrus/infra/viewpoints/policy/style" xmlns:uml="http://www.eclipse.org/uml2/5.0.0/UML" xmi:id="_MQtE8ODIEeOARK60pOvVqQ" type="PapyrusUMLClassDiagram" name="ConstraintClassDiagram" measurementUnit="Pixel">
+  <children xmi:type="notation:Shape" xmi:id="_N2U-8ODIEeOARK60pOvVqQ" type="2008">
+    <children xmi:type="notation:DecorationNode" xmi:id="_N2nS0ODIEeOARK60pOvVqQ" type="5029"/>
+    <children xmi:type="notation:BasicCompartment" xmi:id="_N22jYODIEeOARK60pOvVqQ" type="7017">
+      <styles xmi:type="notation:TitleStyle" xmi:id="_N22jYeDIEeOARK60pOvVqQ"/>
+      <styles xmi:type="notation:SortingStyle" xmi:id="_N22jYuDIEeOARK60pOvVqQ"/>
+      <styles xmi:type="notation:FilteringStyle" xmi:id="_N22jY-DIEeOARK60pOvVqQ"/>
+      <layoutConstraint xmi:type="notation:Bounds" xmi:id="_N22jZODIEeOARK60pOvVqQ"/>
+    </children>
+    <children xmi:type="notation:BasicCompartment" xmi:id="_N22jZeDIEeOARK60pOvVqQ" type="7018">
+      <styles xmi:type="notation:TitleStyle" xmi:id="_N22jZuDIEeOARK60pOvVqQ"/>
+      <styles xmi:type="notation:SortingStyle" xmi:id="_N22jZ-DIEeOARK60pOvVqQ"/>
+      <styles xmi:type="notation:FilteringStyle" xmi:id="_N22jaODIEeOARK60pOvVqQ"/>
+      <layoutConstraint xmi:type="notation:Bounds" xmi:id="_N22jaeDIEeOARK60pOvVqQ"/>
+    </children>
+    <children xmi:type="notation:BasicCompartment" xmi:id="_N23KcODIEeOARK60pOvVqQ" type="7019">
+      <styles xmi:type="notation:TitleStyle" xmi:id="_N23KceDIEeOARK60pOvVqQ"/>
+      <styles xmi:type="notation:SortingStyle" xmi:id="_N23KcuDIEeOARK60pOvVqQ"/>
+      <styles xmi:type="notation:FilteringStyle" xmi:id="_N23Kc-DIEeOARK60pOvVqQ"/>
+      <layoutConstraint xmi:type="notation:Bounds" xmi:id="_N23KdODIEeOARK60pOvVqQ"/>
+    </children>
+    <element xmi:type="uml:Class" href="ConstraintPasteStrategy.uml#_N0UMwODIEeOARK60pOvVqQ"/>
+    <layoutConstraint xmi:type="notation:Bounds" xmi:id="_N2U-8eDIEeOARK60pOvVqQ" x="391" y="110"/>
+  </children>
+  <children xmi:type="notation:Shape" xmi:id="_OQWogODIEeOARK60pOvVqQ" type="2011">
+    <children xmi:type="notation:DecorationNode" xmi:id="_OQXPkODIEeOARK60pOvVqQ" type="5037"/>
+    <children xmi:type="notation:DecorationNode" xmi:id="_OQXPkeDIEeOARK60pOvVqQ" type="5159"/>
+    <element xmi:type="uml:Constraint" href="ConstraintPasteStrategy.uml#_OQJ0MODIEeOARK60pOvVqQ"/>
+    <layoutConstraint xmi:type="notation:Bounds" xmi:id="_OQWogeDIEeOARK60pOvVqQ" x="78" y="152"/>
+  </children>
+  <styles xmi:type="notation:DiagramStyle" xmi:id="_MQtE8eDIEeOARK60pOvVqQ"/>
+  <styles xmi:type="style:PapyrusViewStyle" xmi:id="_MQtE8uDIEeOARK60pOvVqQ">
+    <owner xmi:type="uml:Model" href="ConstraintPasteStrategy.uml#_ML1zEODIEeOARK60pOvVqQ"/>
+  </styles>
+  <element xmi:type="uml:Model" href="ConstraintPasteStrategy.uml#_ML1zEODIEeOARK60pOvVqQ"/>
+  <edges xmi:type="notation:Connector" xmi:id="_OaMhAODIEeOARK60pOvVqQ" type="8500" source="_OQWogODIEeOARK60pOvVqQ" target="_N2U-8ODIEeOARK60pOvVqQ">
+    <children xmi:type="notation:DecorationNode" xmi:id="_OaNIEODIEeOARK60pOvVqQ" type="8501">
+      <layoutConstraint xmi:type="notation:Location" xmi:id="_OaNIEeDIEeOARK60pOvVqQ" y="15"/>
+    </children>
+    <styles xmi:type="notation:FontStyle" xmi:id="_OaMhAeDIEeOARK60pOvVqQ"/>
+    <element xsi:nil="true"/>
+    <bendpoints xmi:type="notation:RelativeBendpoints" xmi:id="_OaMhAuDIEeOARK60pOvVqQ" points="[0, 0, -204, 19]$[160, -14, -44, 5]$[204, -14, 0, 5]"/>
+    <sourceAnchor xmi:type="notation:IdentityAnchor" xmi:id="_OcQ9kODIEeOARK60pOvVqQ" id="(1.0,0.1)"/>
+    <targetAnchor xmi:type="notation:IdentityAnchor" xmi:id="_OcQ9keDIEeOARK60pOvVqQ" id="(0.0,0.48)"/>
+  </edges>
+</notation:Diagram>
diff --git a/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/model/copyPaste/ConstraintPasteStrategy.uml b/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/model/copyPaste/ConstraintPasteStrategy.uml
new file mode 100644
index 00000000000..29eca5aff8f
--- /dev/null
+++ b/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/model/copyPaste/ConstraintPasteStrategy.uml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<uml:Model xmi:version="20131001" xmlns:xmi="http://www.omg.org/spec/XMI/20131001" xmlns:uml="http://www.eclipse.org/uml2/5.0.0/UML" xmi:id="_ML1zEODIEeOARK60pOvVqQ" name="model">
+  <packagedElement xmi:type="uml:Class" xmi:id="_N0UMwODIEeOARK60pOvVqQ" name="Class1">
+    <ownedRule xmi:type="uml:Constraint" xmi:id="_OQJ0MODIEeOARK60pOvVqQ" name="Constraint1">
+      <specification xmi:type="uml:LiteralString" xmi:id="_OQMQcODIEeOARK60pOvVqQ" value=""/>
+    </ownedRule>
+  </packagedElement>
+</uml:Model>
diff --git a/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/test/org/eclipse/papyrus/uml/diagram/clazz/test/AllTests.java b/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/test/org/eclipse/papyrus/uml/diagram/clazz/test/AllTests.java
index a4cc80b0140..b054c98d517 100644
--- a/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/test/org/eclipse/papyrus/uml/diagram/clazz/test/AllTests.java
+++ b/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/test/org/eclipse/papyrus/uml/diagram/clazz/test/AllTests.java
@@ -1,34 +1,36 @@
-/*****************************************************************************

- * Copyright (c) 2009 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:

- *  Patrick Tessier (CEA LIST) Patrick.tessier@cea.fr - Initial API and implementation

- *

- *****************************************************************************/

-package org.eclipse.papyrus.uml.diagram.clazz.test;

-

-import org.eclipse.papyrus.uml.diagram.clazz.test.canonical.AllCanonicalTests;

-import org.eclipse.papyrus.uml.diagram.clazz.test.legacy.PackageDiagramLegacyTest;

-import org.junit.runner.RunWith;

-import org.junit.runners.Suite;

-import org.junit.runners.Suite.SuiteClasses;

-

-/**

- * All tests together.

- */

-@RunWith(Suite.class)

-@SuiteClasses({

-// canonical

-AllCanonicalTests.class,

-PackageDiagramLegacyTest.class

-// load

-//LoadTests.class

-})

-public class AllTests {

-}

+/*****************************************************************************
+ * Copyright (c) 2009 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:
+ *  Patrick Tessier (CEA LIST) Patrick.tessier@cea.fr - Initial API and implementation
+ *
+ *****************************************************************************/
+package org.eclipse.papyrus.uml.diagram.clazz.test;
+
+import org.eclipse.papyrus.uml.diagram.clazz.test.canonical.AllCanonicalTests;
+import org.eclipse.papyrus.uml.diagram.clazz.test.copyPaste.ConstraintPasteStrategyTest;
+import org.eclipse.papyrus.uml.diagram.clazz.test.legacy.PackageDiagramLegacyTest;
+import org.junit.runner.RunWith;
+import org.junit.runners.Suite;
+import org.junit.runners.Suite.SuiteClasses;
+
+/**
+ * All tests together.
+ */
+@RunWith(Suite.class)
+@SuiteClasses({
+		// canonical
+		AllCanonicalTests.class,
+		PackageDiagramLegacyTest.class,
+		ConstraintPasteStrategyTest.class
+// load
+// LoadTests.class
+})
+public class AllTests {
+}
diff --git a/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/test/org/eclipse/papyrus/uml/diagram/clazz/test/copyPaste/ConstraintPasteStrategyTest.java b/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/test/org/eclipse/papyrus/uml/diagram/clazz/test/copyPaste/ConstraintPasteStrategyTest.java
new file mode 100644
index 00000000000..d96b1e2b241
--- /dev/null
+++ b/tests/junit/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.clazz.tests/test/org/eclipse/papyrus/uml/diagram/clazz/test/copyPaste/ConstraintPasteStrategyTest.java
@@ -0,0 +1,182 @@
+/*****************************************************************************
+ * Copyright (c) 2014 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:
+ *  Benoit Maggi (CEA LIST) benoit.maggi@cea.fr - Initial API and implementation
+ *  Gabriel Pascual (ALL4TEC) gabriel.pascual@all4tec.net- bug430548
+ *****************************************************************************/
+package org.eclipse.papyrus.uml.diagram.clazz.test.copyPaste;
+
+
+
+import java.util.List;
+
+import org.eclipse.core.commands.ExecutionEvent;
+import org.eclipse.core.commands.IHandler;
+import org.eclipse.core.expressions.IEvaluationContext;
+import org.eclipse.gef.EditPart;
+import org.eclipse.gmf.runtime.notation.Diagram;
+import org.eclipse.gmf.runtime.notation.Shape;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.papyrus.infra.emf.utils.ServiceUtilsForEObject;
+import org.eclipse.papyrus.infra.services.openelement.service.OpenElementService;
+import org.eclipse.papyrus.junit.framework.classification.tests.AbstractPapyrusTest;
+import org.eclipse.papyrus.junit.utils.DiagramUtils;
+import org.eclipse.papyrus.junit.utils.HandlerUtils;
+import org.eclipse.papyrus.junit.utils.rules.PapyrusEditorFixture;
+import org.eclipse.papyrus.junit.utils.rules.PluginResource;
+import org.eclipse.papyrus.junit.utils.rules.ShowView;
+import org.eclipse.papyrus.uml.diagram.clazz.custom.edit.part.CustomConstraintEditPart;
+import org.eclipse.papyrus.uml.diagram.clazz.edit.parts.ModelEditPart;
+import org.eclipse.ui.ISelectionService;
+import org.eclipse.ui.IWorkbenchWindow;
+import org.eclipse.ui.PlatformUI;
+import org.eclipse.ui.services.IEvaluationService;
+import org.eclipse.uml2.uml.Model;
+import org.junit.Assert;
+import org.junit.Rule;
+import org.junit.Test;
+
+
+/**
+ * Tests for constraint paste strategy
+ * 
+ * @author Benoit Maggi
+ *
+ */
+@PluginResource("model/copyPaste/ConstraintPasteStrategy.di")
+@ShowView(value = "org.eclipse.papyrus.views.modelexplorer.modelexplorer")
+public class ConstraintPasteStrategyTest extends AbstractPapyrusTest {
+
+	@Rule
+	public final PapyrusEditorFixture editorFixture = new PapyrusEditorFixture();
+
+	public static final String COPY_COMMAND_ID = "org.eclipse.ui.edit.copy"; //$NON-NLS-1$
+
+	public static final String PASTE_COMMAND_ID = "org.eclipse.ui.edit.paste"; //$NON-NLS-1$
+
+	public final static String CLASS1_NAME = "Class1"; //$NON-NLS-1$
+
+	public final static String CONSTRAINT_NAME = "Constraint1"; //$NON-NLS-1$
+
+	public final static String DIAGRAM_NAME = "ConstraintClassDiagram"; //$NON-NLS-1$
+
+
+	/**
+	 * Test copy constraint in class diagram.
+	 *
+	 * @throws Exception
+	 *             the exception
+	 */
+	@Test
+	public void testCopyConstraintInClassDiagram() throws Exception {
+
+		// get all semantic element that will handled
+		Model model = (Model) editorFixture.getModel();
+		Assert.assertNotNull("RootModel is null", model);
+
+
+		org.eclipse.uml2.uml.Class class1 = (org.eclipse.uml2.uml.Class) model.getPackagedElement(CLASS1_NAME);
+		org.eclipse.uml2.uml.Constraint constraint = (org.eclipse.uml2.uml.Constraint) class1.getMember(CONSTRAINT_NAME);
+
+		Assert.assertNotNull("Constraint is missing in the model", constraint);
+
+		Diagram mainDiagram = DiagramUtils.getNotationDiagram(editorFixture.getModelSet(), DIAGRAM_NAME);
+		editorFixture.getPageManager().openPage(mainDiagram);
+		Assert.assertEquals("current opened diagram is not the expected one", mainDiagram.getName(), DIAGRAM_NAME);
+
+		Shape constraintView = DiagramUtils.findShape(mainDiagram, CONSTRAINT_NAME);
+		Assert.assertNotNull("Constraint view not present", constraintView);
+
+		Object defaultSelection = getSelectionLikeTestOnModelExplorer();
+		Object defaultSelectionHandler = getSelectionLikeInAbstractGraphicalHandler();
+
+		editorFixture.flushDisplayEvents();
+		Assert.assertNotNull("Constraint TreeElement is null", defaultSelection); //$NON-NLS-1$		
+		Assert.assertEquals("TreeElement is not a model", ModelEditPart.class, defaultSelection.getClass());
+		Assert.assertEquals("TreeElement is not a model", ModelEditPart.class, defaultSelectionHandler.getClass());
+
+		EditPart constraintEP = editorFixture.findEditPart(constraint);
+		editorFixture.select(constraintEP);
+
+
+		IWorkbenchWindow activeWorkbenchWindow = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
+		ISelectionService selectionService = activeWorkbenchWindow.getSelectionService();
+		Object constraintSelection = ((IStructuredSelection) selectionService.getSelection()).getFirstElement();
+
+		// it's working on service selection
+		Assert.assertEquals("TreeElement is not a constraint", CustomConstraintEditPart.class, constraintSelection.getClass());
+
+		ISelection selection = editorFixture.getEditor().getEditorSite().getSelectionProvider().getSelection();
+		Object editorSelection = ((IStructuredSelection) selection).getFirstElement();
+
+		// it's working on editor selection
+		Assert.assertEquals("TreeElement is not a constraint", CustomConstraintEditPart.class, editorSelection.getClass());
+
+		editorFixture.flushDisplayEvents();
+		Object defaultVariableFromLinkHelperSelection = getSelectionLikeInAbstractGraphicalHandler();
+		Assert.assertEquals("TreeElement is not a constraint", CustomConstraintEditPart.class, defaultVariableFromLinkHelperSelection.getClass());
+
+		// Test with OpenElementService
+		OpenElementService openElementService = ServiceUtilsForEObject.getInstance().getService(OpenElementService.class, constraint);
+		openElementService.openSemanticElement(constraint);
+
+		editorFixture.flushDisplayEvents();
+		Object defaultVariableFromOpenElementService = getSelectionLikeInAbstractGraphicalHandler();
+		Assert.assertEquals("TreeElement is not a constraint", CustomConstraintEditPart.class, defaultVariableFromOpenElementService.getClass());
+
+		// Copy
+		IHandler copyHandler = HandlerUtils.getActiveHandlerFor(COPY_COMMAND_ID);
+		Assert.assertTrue("Copy not available", copyHandler.isEnabled()); //$NON-NLS-1$
+		copyHandler.execute(new ExecutionEvent());
+
+		// Select diagram
+		EditPart modelEP = editorFixture.findEditPart(model);
+		editorFixture.deselect(constraintEP);
+		editorFixture.select(modelEP);
+		editorFixture.getPageManager().selectPage(mainDiagram);
+
+		editorFixture.flushDisplayEvents();
+
+		int amountRulesBeforeCopy = class1.getOwnedRules().size();
+
+		// Paste
+		IHandler pasteHandler = HandlerUtils.getActiveHandlerFor(PASTE_COMMAND_ID);
+		Assert.assertTrue("Paste not available", pasteHandler.isEnabled()); //$NON-NLS-1$
+		pasteHandler.execute(new ExecutionEvent());
+
+		editorFixture.flushDisplayEvents();
+
+		// Check that there is a copy of Constraint
+		Assert.assertEquals("The copy failed", amountRulesBeforeCopy + 1, class1.getOwnedRules().size()); //$NON-NLS-1$			
+
+	}
+
+	private Object getSelectionLikeInAbstractGraphicalHandler() {
+		IEvaluationService evaluationService = (IEvaluationService) PlatformUI.getWorkbench().getService(IEvaluationService.class);
+		IEvaluationContext currentState = evaluationService.getCurrentState();
+		Object defaultVariable = currentState.getDefaultVariable();
+		if (defaultVariable instanceof List) {
+			List arrayList = (List) defaultVariable;
+			if (!arrayList.isEmpty()) {
+				return arrayList.get(0);
+			}
+		}
+		return defaultVariable;
+	}
+
+	private Object getSelectionLikeTestOnModelExplorer() {
+		IWorkbenchWindow activeWorkbenchWindow = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
+		ISelectionService selectionService = activeWorkbenchWindow.getSelectionService();
+		return ((IStructuredSelection) selectionService.getSelection()).getFirstElement();
+	}
+
+
+
+}