1 files changed, 1046 insertions, 1043 deletions
diff --git a/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.common/src/org/eclipse/papyrus/uml/diagram/common/editpolicies/CommonDiagramDragDropEditPolicy.java b/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.common/src/org/eclipse/papyrus/uml/diagram/common/editpolicies/CommonDiagramDragDropEditPolicy.java
index 79d6457f8b2..6ea8c6bcbe7 100644..100755
--- a/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.common/src/org/eclipse/papyrus/uml/diagram/common/editpolicies/CommonDiagramDragDropEditPolicy.java
+++ b/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.common/src/org/eclipse/papyrus/uml/diagram/common/editpolicies/CommonDiagramDragDropEditPolicy.java
@@ -1,1043 +1,1046 @@
-/*****************************************************************************
- * Copyright (c) 2009, 2015 CEA LIST, Christian W. Damus, and others.
- *
- *
- * 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
- *  Emilien Perico (Atos Origin) emilien.perico@atosorigin.com - refactor common behavior between diagrams
- *  Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - add the line 	ViewServiceUtil.forceLoad();
- *  Christian W. Damus (CEA) - bug 430726
- *  Benoit Maggi (CEA LIST) benoit.maggi@cea.fr - bug 450341
- *  Christian W. Damus - bug 450944
- *  Christian W. Damus - bug 477384
- *  Fanch Bonnabesse (ALL4TEC) fanch.bonnabesse@alltec.net - Bug 493430
- *****************************************************************************/
-package org.eclipse.papyrus.uml.diagram.common.editpolicies;
-
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.Iterator;
-import java.util.List;
-
-import org.eclipse.core.commands.operations.IUndoableOperation;
-import org.eclipse.core.runtime.IAdaptable;
-import org.eclipse.draw2d.PositionConstants;
-import org.eclipse.draw2d.Viewport;
-import org.eclipse.draw2d.geometry.Dimension;
-import org.eclipse.draw2d.geometry.Point;
-import org.eclipse.draw2d.geometry.Rectangle;
-import org.eclipse.emf.ecore.EClass;
-import org.eclipse.emf.ecore.EObject;
-import org.eclipse.emf.transaction.TransactionalEditingDomain;
-import org.eclipse.gef.EditPart;
-import org.eclipse.gef.EditPartViewer;
-import org.eclipse.gef.EditPolicy;
-import org.eclipse.gef.commands.Command;
-import org.eclipse.gef.commands.CompoundCommand;
-import org.eclipse.gef.commands.UnexecutableCommand;
-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.preferences.PreferencesHint;
-import org.eclipse.gmf.runtime.diagram.core.util.ViewUtil;
-import org.eclipse.gmf.runtime.diagram.ui.commands.CommandProxy;
-import org.eclipse.gmf.runtime.diagram.ui.commands.CreateCommand;
-import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
-import org.eclipse.gmf.runtime.diagram.ui.commands.SetBoundsCommand;
-import org.eclipse.gmf.runtime.diagram.ui.editparts.CompartmentEditPart;
-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.IGraphicalEditPart;
-import org.eclipse.gmf.runtime.diagram.ui.editparts.ListCompartmentEditPart;
-import org.eclipse.gmf.runtime.diagram.ui.editparts.ShapeCompartmentEditPart;
-import org.eclipse.gmf.runtime.diagram.ui.editpolicies.EditPolicyRoles;
-import org.eclipse.gmf.runtime.diagram.ui.figures.ShapeCompartmentFigure;
-import org.eclipse.gmf.runtime.diagram.ui.requests.CreateConnectionViewRequest;
-import org.eclipse.gmf.runtime.diagram.ui.requests.CreateConnectionViewRequest.ConnectionViewDescriptor;
-import org.eclipse.gmf.runtime.diagram.ui.requests.CreateViewRequest;
-import org.eclipse.gmf.runtime.diagram.ui.requests.CreateViewRequest.ViewDescriptor;
-import org.eclipse.gmf.runtime.diagram.ui.requests.DropObjectsRequest;
-import org.eclipse.gmf.runtime.emf.core.util.EObjectAdapter;
-import org.eclipse.gmf.runtime.emf.type.core.IElementType;
-import org.eclipse.gmf.runtime.emf.type.core.IHintedType;
-import org.eclipse.gmf.runtime.notation.Diagram;
-import org.eclipse.gmf.runtime.notation.Node;
-import org.eclipse.gmf.runtime.notation.View;
-import org.eclipse.papyrus.commands.wrappers.CommandProxyWithResult;
-import org.eclipse.papyrus.infra.gmfdiag.common.adapter.SemanticAdapter;
-import org.eclipse.papyrus.infra.gmfdiag.common.commands.CommonDeferredCreateConnectionViewCommand;
-import org.eclipse.papyrus.infra.gmfdiag.common.commands.CreateViewCommand;
-import org.eclipse.papyrus.infra.gmfdiag.common.commands.SemanticElementAdapter;
-import org.eclipse.papyrus.infra.gmfdiag.common.editpolicies.AbstractDiagramDragDropEditPolicy;
-import org.eclipse.papyrus.infra.gmfdiag.common.service.visualtype.VisualTypeService;
-import org.eclipse.papyrus.infra.gmfdiag.common.utils.DiagramEditPartsUtil;
-import org.eclipse.papyrus.infra.gmfdiag.common.utils.ViewServiceUtil;
-import org.eclipse.papyrus.infra.gmfdiag.dnd.policy.CustomizableDropEditPolicy;
-import org.eclipse.papyrus.infra.tools.util.TypeUtils;
-import org.eclipse.papyrus.uml.diagram.common.commands.DeferredCreateCommand;
-import org.eclipse.papyrus.uml.diagram.common.helper.Element2IAdaptableRegistryHelper;
-import org.eclipse.papyrus.uml.diagram.common.helper.ILinkMappingHelper;
-import org.eclipse.papyrus.uml.diagram.common.listeners.DropTargetListener;
-import org.eclipse.papyrus.uml.diagram.common.locator.PortPositionLocator;
-import org.eclipse.papyrus.uml.diagram.common.util.AssociationUtil;
-import org.eclipse.swt.dnd.DND;
-import org.eclipse.uml2.uml.Behavior;
-import org.eclipse.uml2.uml.Comment;
-import org.eclipse.uml2.uml.ConnectableElement;
-import org.eclipse.uml2.uml.Constraint;
-import org.eclipse.uml2.uml.Element;
-import org.eclipse.uml2.uml.EncapsulatedClassifier;
-import org.eclipse.uml2.uml.Parameter;
-import org.eclipse.uml2.uml.Port;
-import org.eclipse.uml2.uml.Property;
-import org.eclipse.uml2.uml.Type;
-
-/**
- * This class is used to execute the drag and drop from the outline. It can
- * manage the drop of nodes and binary links.
- */
-public abstract class CommonDiagramDragDropEditPolicy extends AbstractDiagramDragDropEditPolicy {
-
-	private Element2IAdaptableRegistryHelper myElement2IAdaptableRegistryHelper;
-
-
-
-	/** The specified link mapping helper depending on the diagram */
-	protected ILinkMappingHelper linkmappingHelper;
-
-	/**
-	 * Instantiates a new custom diagram drag drop edit policy.
-	 *
-	 * @param mappingHelper
-	 *            the mapping helper
-	 */
-	public CommonDiagramDragDropEditPolicy(ILinkMappingHelper mappingHelper) {
-		linkmappingHelper = mappingHelper;
-	}
-
-
-	/**
-	 * Gets the UML element type for the specified
-	 *
-	 * @param elementID
-	 *            the element id
-	 *
-	 * @return the uML element type
-	 */
-	public IElementType getUMLElementType(String elementID) {
-		return VisualTypeService.getInstance().getElementType(getContextDiagram(), elementID);
-	}
-
-	public String getNodeVisualID(View containerView, EObject domainElement) {
-		return VisualTypeService.getInstance().getNodeType(containerView, domainElement);
-	}
-
-	public String getLinkWithClassVisualID(EObject domainElement) {
-		return VisualTypeService.getInstance().getLinkType(getContextDiagram(), domainElement);
-	}
-
-	/**
-	 * Gets the notational diagram in which my host edit part is rendering a view.
-	 *
-	 * @return the contextual diagram
-	 */
-	protected Diagram getContextDiagram() {
-		View view = TypeUtils.as(getHost().getModel(), View.class);
-		return (view == null) ? null : view.getDiagram();
-	}
-
-	/**
-	 * Gets composite command adapters
-	 */
-	protected Element2IAdaptableRegistryHelper getElement2IAdaptableRegistryHelper() {
-		if (myElement2IAdaptableRegistryHelper == null) {
-			myElement2IAdaptableRegistryHelper = new Element2IAdaptableRegistryHelper();
-		}
-		return myElement2IAdaptableRegistryHelper;
-	}
-
-	/**
-	 * {@inheritedDoc}
-	 */
-	@Override
-	protected Command createViewsAndArrangeCommand(DropObjectsRequest dropRequest, List viewDescriptors) {
-		CreateViewRequest createViewRequest = new CreateViewRequest(viewDescriptors);
-		createViewRequest.setLocation(dropRequest.getLocation());
-		Command createCommand = getHost().getCommand(createViewRequest);
-		return createCommand;
-	}
-
-	/**
-	 * the method provides command to create the binary link into the diagram.
-	 * If the source and the target views do not exist, these views will be
-	 * created.
-	 *
-	 * @param cc
-	 *            the composite command that will contain the set of command to
-	 *            create the binary link
-	 * @param source
-	 *            the source the element source of the link
-	 * @param target
-	 *            the target the element target of the link
-	 * @param linkVISUALID
-	 *            the link VISUALID used to create the view
-	 * @param location
-	 *            the location the location where the view will be be created
-	 * @param semanticLink
-	 *            the semantic link that will be attached to the view
-	 *
-	 * @return the composite command
-	 */
-	public CompositeCommand dropBinaryLink(CompositeCommand cc, Element source, Element target, String linkVISUALID, Point absoluteLocation, Element semanticLink) {
-		IAdaptable sourceAdapter = findAdapter(cc, source, getLinkSourceDropLocation(absoluteLocation, source, target));
-		IAdaptable targetAdapter = findAdapter(cc, target, getLinkTargetDropLocation(absoluteLocation, source, target));
-		// descriptor of the link
-
-		SemanticElementAdapter adapter = new SemanticElementAdapter(semanticLink, getUMLElementType(linkVISUALID));
-		CreateConnectionViewRequest.ConnectionViewDescriptor linkdescriptor = new CreateConnectionViewRequest.ConnectionViewDescriptor(adapter, ((IHintedType) getUMLElementType(linkVISUALID)).getSemanticHint(),
-				getDiagramPreferencesHint());
-
-		CommonDeferredCreateConnectionViewCommand aLinkCommand = new CommonDeferredCreateConnectionViewCommand(getEditingDomain(), ((IHintedType) getUMLElementType(linkVISUALID)).getSemanticHint(), sourceAdapter, targetAdapter, getViewer(),
-				getDiagramPreferencesHint(), linkdescriptor, null);
-		aLinkCommand.setElement(semanticLink);
-		cc.compose(aLinkCommand);
-		return cc;
-	}
-
-	/**
-	 * This method allows to specify a location for the creation of a node at
-	 * the source of a dropped link. Overriding implementations must not modify
-	 * the absoluteLocation parameter (use {@link Point#getCopy()})
-	 *
-	 * @param absoluteLocation
-	 *            the request's drop location
-	 * @param source
-	 *            the source of the dropped link
-	 * @param target
-	 *            the target of the dropped link
-	 * @return the new location for the node
-	 */
-	protected Point getLinkSourceDropLocation(Point absoluteLocation, Element source, Element target) {
-		return absoluteLocation;
-	}
-
-	/**
-	 * This method allows to specify a location for the creation of a node at
-	 * the target of a dropped link. Overriding implementations must not modify
-	 * the absoluteLocation parameter (use {@link Point#getCopy()})
-	 *
-	 * @param absoluteLocation
-	 *            the request's drop location
-	 * @param source
-	 *            the source of the dropped link
-	 * @param target
-	 *            the target of the dropped link
-	 * @return the new location for the node
-	 */
-	protected Point getLinkTargetDropLocation(Point absoluteLocation, Element source, Element target) {
-		if (lookForEditPart(source) == null && lookForEditPart(target) == null) {
-			return absoluteLocation.getTranslated(100, 0);
-		}
-		return absoluteLocation;
-	}
-
-	/**
-	 * Gets the diagram preferences hint.
-	 *
-	 * @return the diagram preferences hint
-	 */
-	protected PreferencesHint getDiagramPreferencesHint() {
-		return ((IGraphicalEditPart) getHost()).getDiagramPreferencesHint();
-	}
-
-	/**
-	 * {@inheritedDoc}.
-	 */
-	@Override
-	public Command getDropObjectsCommand(DropObjectsRequest dropRequest) {
-		/*
-		 * when it's the first action after the opening of Papyrus, the
-		 * viewService is not loaded! see bug 302555
-		 *
-		 * Duration test for 100000 creations of DropCommand : Here 2 solutions
-		 * : - call ViewServiceUtil.forceLoad(); for each drop -> ~2500ms
-		 *
-		 * - test if the command cc can be executed at the end of the method,
-		 * and if not : - call ViewServiceUtil.forceLoad(); - and return
-		 * getDropObjectsCommand(getDropObjectsCommand) -> ~4700ms
-		 *
-		 * - for information : without call ViewServiceUtil.forceLoad(); ->
-		 * ~1600ms
-		 *
-		 * It's better don't test if the command is executable!
-		 */
-		ViewServiceUtil.forceLoad();
-
-		if (dropRequest.getObjects().size() > 0 && dropRequest.getObjects().get(0) instanceof String) {
-			return getDropFileCommand(dropRequest);
-		}
-
-		// Create a view request from the drop request and then forward getting
-		// the command for that.
-		CompositeCommand cc = new CompositeCommand("Drop"); //$NON-NLS-1$
-		Iterator<?> iter = dropRequest.getObjects().iterator();
-
-		while (iter.hasNext()) {
-			EObject droppedObject = (EObject) iter.next();
-			if (droppedObject instanceof Element && getElement2IAdaptableRegistryHelper().findAdapter((Element) droppedObject) != null) {
-				continue;
-			}
-			cc.add(getDropObjectCommand(dropRequest, droppedObject));
-		}
-		getElement2IAdaptableRegistryHelper().clear();
-		return new ICommandProxy(cc);
-	}
-
-	protected IUndoableOperation getDropObjectCommand(DropObjectsRequest dropRequest, EObject droppedObject) {
-		Point location = dropRequest.getLocation().getCopy();
-		IGraphicalEditPart parent = (IGraphicalEditPart) getHost();
-		boolean isParentDiagram = getHost().getModel() instanceof Diagram;
-		String nodeVISUALID = getNodeVisualID(parent.getNotationView(), droppedObject);
-		String linkVISUALID = getLinkWithClassVisualID(droppedObject);
-		if (getSpecificDrop().contains(nodeVISUALID) || getSpecificDrop().contains(linkVISUALID)) {
-			if (!isParentDiagram && !isDropNonCanvasNodeAllowed(parent, droppedObject)) {
-				return org.eclipse.gmf.runtime.common.core.command.UnexecutableCommand.INSTANCE;
-			}
-			Command specificDropCommand = getSpecificDropCommand(dropRequest, (Element) droppedObject, nodeVISUALID, linkVISUALID);
-			CompositeCommand cc = new CompositeCommand("Drop command");
-			cc.compose(new CommandProxy(specificDropCommand));
-			// If ctrl key activate, get the content of element dropped
-			if (isCopy(dropRequest)) {
-				// Check for ICommandProxy and CompoundCommand the most command type used
-				if (specificDropCommand instanceof ICommandProxy) {
-					ICommandProxy specificDropCommandProxy = (ICommandProxy) specificDropCommand;
-					createDeferredCommandWithCommandResult(droppedObject, cc, specificDropCommandProxy);
-				} else if (specificDropCommand instanceof CompoundCommand) {
-					CompoundCommand specificDropCompoundCommand = (CompoundCommand) specificDropCommand;
-					ICommandProxy cp = getCommandProxyFromCompoundCommand(specificDropCompoundCommand);
-					if (cp != null) {
-						createDeferredCommandWithCommandResult(droppedObject, cc, cp);
-					}
-				}
-			}
-			return cc;
-		}
-
-		if ((linkVISUALID == null || linkVISUALID.isEmpty()) && nodeVISUALID != null) {
-			// The element to drop is a node
-			// Retrieve it's expected graphical parent
-			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
-			if (isParentDiagram) {
-				return getDefaultDropNodeCommand(nodeVISUALID, location, droppedObject, dropRequest);
-			} else if (((graphicalParent instanceof Element) && ((Element) graphicalParent).getOwnedElements().contains(droppedObject)) && isDropNonCanvasNodeAllowed(parent, droppedObject)) {
-				return getDefaultDropNodeCommand(nodeVISUALID, location, droppedObject, dropRequest);
-			}
-			return org.eclipse.gmf.runtime.common.core.command.UnexecutableCommand.INSTANCE;
-
-		}
-		if (linkVISUALID != null && !linkVISUALID.isEmpty()) {
-			Collection<?> sources = linkmappingHelper.getSource((Element) droppedObject);
-			Collection<?> targets = linkmappingHelper.getTarget((Element) droppedObject);
-			if (sources.size() == 0 || targets.size() == 0) {
-				return org.eclipse.gmf.runtime.common.core.command.UnexecutableCommand.INSTANCE;
-			}
-			// binary association
-			Element source = (Element) sources.toArray()[0];
-			Element target = (Element) targets.toArray()[0];
-			CompositeCommand cc = new CompositeCommand("Add Link"); //$NON-NLS-1$
-			dropBinaryLink(cc, source, target, linkVISUALID, location, (Element) droppedObject);
-			return cc;
-		}
-		return org.eclipse.gmf.runtime.common.core.command.UnexecutableCommand.INSTANCE;
-	}
-
-	/**
-	 * Is dropping allowed for the non-canvas parent
-	 *
-	 * @param parent
-	 * @param droppedObject
-	 * @return true or false
-	 */
-	protected boolean isDropNonCanvasNodeAllowed(IGraphicalEditPart parent, EObject droppedObject) {
-		if (isListCompartmentContainsDroppedObject(parent, droppedObject)) {
-			return false;
-		}
-		if (droppedObject instanceof Property && AssociationUtil.isAssociationEndProperty((Property) droppedObject)) {
-			return false;
-		}
-		return true;
-	}
-
-	private boolean isListCompartmentContainsDroppedObject(IGraphicalEditPart parent, EObject droppedObject) {
-		if (false == parent instanceof ListCompartmentEditPart) {
-			return false;
-		}
-		@SuppressWarnings("unchecked")
-		List<EditPart> childs = parent.getChildren();
-		for (EditPart nextChild : childs) {
-			if (!(nextChild instanceof GraphicalEditPart)) {
-				continue;
-			}
-			EObject nextChildSemantic = ((GraphicalEditPart) nextChild).resolveSemanticElement();
-			if (nextChildSemantic == droppedObject) {
-				return true;
-			}
-		}
-		return false;
-	}
-
-	/**
-	 * Get a command proxy from the compound command
-	 *
-	 * @param cc
-	 *            the compound command
-	 * @return the command proxy found or null
-	 */
-	protected ICommandProxy getCommandProxyFromCompoundCommand(CompoundCommand cc) {
-		if (cc != null && cc.getCommands() != null) {
-			for (Object command : cc.getCommands()) {
-				if (command instanceof ICommandProxy) {
-					return (ICommandProxy) command;
-				} else if (command instanceof CompoundCommand) {
-					getCommandProxyFromCompoundCommand((CompoundCommand) command);
-				}
-			}
-		}
-		return null;
-	}
-
-	/**
-	 * Create deferred command for a command proxy
-	 *
-	 * @param droppedObject
-	 *            the dropped object
-	 * @param cc
-	 *            the composite command to add the deferred command
-	 * @param specificDropCommandProxy
-	 *            the specific drop command to get the result
-	 */
-	protected void createDeferredCommandWithCommandResult(EObject droppedObject, CompositeCommand cc, ICommandProxy specificDropCommandProxy) {
-		if (specificDropCommandProxy != null && specificDropCommandProxy.getICommand() != null && specificDropCommandProxy.getICommand().getCommandResult() != null && specificDropCommandProxy.getICommand().getCommandResult().getReturnValue() != null) {
-			Object object = specificDropCommandProxy.getICommand().getCommandResult().getReturnValue();
-			if (object instanceof CreateViewRequest.ViewDescriptor) {
-				cc.compose(createDeferredCreateCommand(droppedObject, (CreateViewRequest.ViewDescriptor) object));
-			} else if (object instanceof Collection<?>) {
-				for (Object o : (Collection<?>) object) {
-					if (o instanceof CreateViewRequest.ViewDescriptor) {
-						cc.compose(createDeferredCreateCommand(droppedObject, (CreateViewRequest.ViewDescriptor) o));
-					}
-				}
-			}
-		}
-	}
-
-	private DeferredCreateCommand createDeferredCreateCommand(EObject droppedObject, CreateViewRequest.ViewDescriptor viewDescriptor) {
-		return new DeferredCreateCommand(getEditingDomain(), droppedObject, viewDescriptor, getHost().getViewer());
-	}
-
-	/**
-	 * Get a new Point translated to relative coordinate
-	 *
-	 * @param absoluteLocation
-	 *            the absolute point
-	 * @return the relative point
-	 */
-	protected Point getTranslatedToRelative(Point absoluteLocation) {
-		Point relativeLocation = absoluteLocation.getCopy();
-		((GraphicalEditPart) getHost()).getContentPane().translateToRelative(relativeLocation);
-		((GraphicalEditPart) getHost()).getContentPane().translateFromParent(relativeLocation);
-		relativeLocation.translate(((GraphicalEditPart) getHost()).getContentPane().getClientArea().getLocation().getNegated());
-		return relativeLocation;
-	}
-
-	/**
-	 * This method returns the default drop command for node. It create the view
-	 * at the specified location, using the gmf command framework so the
-	 * policies are used.
-	 *
-	 * @param nodeVISUALID
-	 *            the node visual identifier
-	 * @param location
-	 *            the drop location
-	 * @param droppedObject
-	 *            the object to drop
-	 * @param request
-	 *            the drop request
-	 * @return the creation node command
-	 */
-	protected ICommand getDefaultDropNodeCommand(String nodeVISUALID, Point absoluteLocation, EObject droppedObject, DropObjectsRequest request) {
-		return getDefaultDropNodeCommand(getHost(), nodeVISUALID, absoluteLocation, droppedObject);
-	}
-
-	/**
-	 * This method returns the default drop command for node. It create the view
-	 * at the specified location, using the gmf command framework so the
-	 * policies are used.
-	 *
-	 * @param nodeVISUALID
-	 *            the node visual identifier
-	 * @param location
-	 *            the drop location
-	 * @param droppedObject
-	 *            the object to drop
-	 * @return the creation node command
-	 */
-	protected ICommand getDefaultDropNodeCommand(String nodeVISUALID, Point absoluteLocation, EObject droppedObject) {
-		return getDefaultDropNodeCommand(nodeVISUALID, absoluteLocation, droppedObject, null);
-	}
-
-	/**
-	 * This method returns the default drop command for node. It create the view
-	 * at the specified location, using the gmf command framework so the
-	 * policies are used.
-	 *
-	 * @param location
-	 *            the drop location
-	 * @param droppedObject
-	 *            the object to drop
-	 * @return the creation node command
-	 */
-	protected ICommand getDefaultDropNodeCommand(Point absoluteLocation, EObject droppedObject) {
-		return getDefaultDropNodeCommand(getHost(), null, absoluteLocation, droppedObject);
-	}
-
-	/**
-	 * This method returns the default drop command for node. It create the view
-	 * at the specified location, using the gmf command framework so the
-	 * policies are used.
-	 *
-	 * @param hostEP
-	 *            The host edit part which will be the parent of the new node
-	 * @param location
-	 *            the drop location
-	 * @param droppedObject
-	 *            the object to drop
-	 * @return the creation node command
-	 */
-	protected ICommand getDefaultDropNodeCommand(EditPart hostEP, Point absoluteLocation, EObject droppedObject) {
-		return getDefaultDropNodeCommand(hostEP, null, absoluteLocation, droppedObject);
-	}
-
-	/**
-	 * This method returns the default drop command for node. It create the view
-	 * at the specified location, using the gmf command framework so the
-	 * policies are used.
-	 *
-	 * @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
-	 * @return the creation node command
-	 */
-	protected ICommand getDefaultDropNodeCommand(EditPart hostEP, String semanticHint, Point absoluteLocation, EObject droppedObject) {
-		return getDefaultDropNodeCommand(hostEP, semanticHint, absoluteLocation, droppedObject, null);
-	}
-
-	/**
-	 * This method returns the default drop command for node. It create the view
-	 * at the specified location, using the gmf command framework so the
-	 * policies are used.
-	 * If the ctrl key is pressed, do a command to add content of the new node
-	 *
-	 * @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
-	 */
-	protected ICommand getDefaultDropNodeCommand(EditPart hostEP, String semanticHint, Point absoluteLocation, EObject droppedObject, DropObjectsRequest request) {
-		DiagramEditPartsUtil.findViews(droppedObject, getViewer());
-
-		// only allow one view instance of a single element by diagram
-		// if(existingViews.isEmpty()) {
-		IAdaptable elementAdapter = new EObjectAdapter(droppedObject);
-
-		ViewDescriptor descriptor = new ViewDescriptor(elementAdapter, Node.class, semanticHint, ViewUtil.APPEND, true, getDiagramPreferencesHint());
-		CreateViewRequest createViewRequest = new CreateViewRequest(descriptor);
-		createViewRequest.setLocation(absoluteLocation);
-
-		// "ask" the host for a command associated with the
-		// CreateViewRequest
-		Command command = hostEP.getCommand(createViewRequest);
-		if (isCopy(request) && createViewRequest.getNewObject() instanceof List) {
-			for (Object object : (List<?>) createViewRequest.getNewObject()) {
-				if (object instanceof IAdaptable) {
-					DeferredCreateCommand createCommand2 = new DeferredCreateCommand(getEditingDomain(), droppedObject, (IAdaptable) object, getHost().getViewer());
-					command.chain(new ICommandProxy(createCommand2));
-				}
-			}
-		}
-		// set the viewdescriptor as result
-		// it then can be used as an adaptable to retrieve the View
-		ICommand result = new CommandProxyWithResult(command, descriptor);
-		if (droppedObject instanceof Element) {
-			getElement2IAdaptableRegistryHelper().registerAdapter((Element) droppedObject, (IAdaptable) result.getCommandResult().getReturnValue());
-		}
-		return result;
-	}
-
-	/**
-	 * Check if the ctrl key event is activate
-	 *
-	 * @param dropRequest
-	 *            the request which contain the event
-	 * @return true if ctrl key is activate, else return false
-	 */
-	public boolean isCopy(DropObjectsRequest dropRequest) {
-		if (dropRequest != null && dropRequest.getExtendedData() != null && dropRequest.getExtendedData().get(DropTargetListener.EVENT_DETAIL) instanceof Integer) {
-			int eventDetail = (Integer) dropRequest.getExtendedData().get(DropTargetListener.EVENT_DETAIL);
-			if (((eventDetail & DND.DROP_COPY) != 0)) {
-				return true;
-			}
-		}
-		return false;
-	}
-
-	/**
-	 * Gets the editing domain.
-	 *
-	 * @return the editing domain
-	 */
-	protected TransactionalEditingDomain getEditingDomain() {
-		return ((IGraphicalEditPart) getHost()).getEditingDomain();
-	}
-
-	/**
-	 * for specific case of drop, the designers has to write the algorithm of
-	 * its own drop. for example case of associationClass, multi dependency
-	 * etc....
-	 *
-	 * @param dropRequest
-	 *            the drop request
-	 * @param nodeVISUALID
-	 *            the node visualid
-	 * @param linkVISUALID
-	 *            the link visualid
-	 * @param semanticLink
-	 *            the semantic link
-	 *
-	 * @return the specific drop command
-	 */
-	protected Command getSpecificDropCommand(DropObjectsRequest dropRequest, Element semanticLink, String nodeVISUALID, String linkVISUALID) {
-		return UnexecutableCommand.INSTANCE;
-	}
-
-	/**
-	 * Gets the viewer.
-	 *
-	 * @return the viewer
-	 */
-	protected EditPartViewer getViewer() {
-		return ((IGraphicalEditPart) getHost()).getViewer();
-	}
-
-	/**
-	 * Look for editPart from its semantic.
-	 *
-	 * @param semantic
-	 *            the semantic
-	 *
-	 * @return the edits the part or null if not found
-	 */
-	protected EditPart lookForEditPart(EObject semantic) {
-		Collection<EditPart> editPartSet = getHost().getViewer().getEditPartRegistry().values();
-		Iterator<EditPart> editPartIterator = editPartSet.iterator();
-		EditPart existedEditPart = null;
-		while (editPartIterator.hasNext() && existedEditPart == null) {
-			EditPart currentEditPart = editPartIterator.next();
-
-			if (isEditPartTypeAdapted(currentEditPart.getClass(), semantic.eClass()) && semantic.equals(((GraphicalEditPart) currentEditPart).resolveSemanticElement())) {
-				existedEditPart = currentEditPart;
-			}
-		}
-		return existedEditPart;
-	}
-
-	/**
-	 * Check if the edit part type is the best one to represent an object of the
-	 * given EClass type
-	 *
-	 * @param editPartClass
-	 *            the type of EditPart which may represent a semantic element
-	 * @param eClass
-	 *            the EClass type of the represented semantic element
-	 * @return true if an edit part of this type should be selected
-	 */
-	private boolean isEditPartTypeAdapted(Class<? extends EditPart> editPartClass, EClass eClass) {
-		if (DiagramEditPart.class.isAssignableFrom(editPartClass) || CompartmentEditPart.class.isAssignableFrom(editPartClass)) {
-			// the edit part is disqualified, as a compartment or a diagram can
-			// not be dropped
-			return false;
-		} else if (GraphicalEditPart.class.isAssignableFrom(editPartClass)) {
-			// check the edit part type against advised ones
-			return isEditPartTypeSuitableForEClass(editPartClass.asSubclass(GraphicalEditPart.class), eClass);
-		} else {
-			// only a GraphicalEditPart must be selected
-			return false;
-		}
-	}
-
-	/**
-	 * Check if an edit part type correctly represent a semantic element of the
-	 * given EClass. Subclasses should implement this method to restrict the
-	 * possibilities during drop of a link. If an edit part is not of a suitable
-	 * type, returning false will eliminate it to represent the element as a
-	 * source or target edit part. This can be used for example to disable label
-	 * edit parts, which may represent the same model element as the main node.
-	 *
-	 * @param editPartClass
-	 *            the type of EditPart which must be checked
-	 * @param eClass
-	 *            the EClass type of the element which the edit part must
-	 *            represent
-	 * @return the only edit part type which can be selected (return a common
-	 *         super type if several edit parts can be chosen)
-	 */
-	protected boolean isEditPartTypeSuitableForEClass(Class<? extends GraphicalEditPart> editPartClass, EClass eClass) {
-		return true;
-	}
-
-	/**
-	 * Returns The command to drop the {@link Constraint} and the links, if the
-	 * constraints elements are on the diagram
-	 *
-	 * @param comment
-	 *            the comment to drop
-	 * @param viewer
-	 *            the viewer
-	 * @param diagramPreferencesHint
-	 *            the diagram preference hint
-	 * @param location
-	 *            the location for the drop
-	 * @param containerView
-	 *            the container view for the drop
-	 * @param commentType
-	 *            the IHintedType for the {@link Comment}
-	 * @param linkForComment
-	 *            the IHintedType for the link which attach the {@link Comment} to the annotated Element
-	 * @return The command to drop the {@link Constraint} and the links, if the
-	 *         constraints elements are on the diagram
-	 */
-	protected Command getDropConstraintCommand(Constraint constraint, EditPartViewer viewer, PreferencesHint diagramPreferencesHint, Point location, View containerView, IHintedType commentType, IHintedType linkForComment) {
-		/* for further information, see bug 302555 */
-		CompositeCommand cc = new CompositeCommand("dropConstraint");
-		int nbAnnotated = constraint.getConstrainedElements().size();
-
-		// 0. Obtain list of the annotatedElement
-		ArrayList<Element> endToConnect = new ArrayList<>(constraint.getConstrainedElements());
-		GraphicalEditPart[] endEditPart = new GraphicalEditPart[nbAnnotated];
-
-		// 1. Look for if each annotated element is on the diagram
-		Iterator<Element> iteratorProp = endToConnect.iterator();
-		int index = 0;
-		while (iteratorProp.hasNext()) {
-			Element currentAnnotatedElement = iteratorProp.next();
-			endEditPart[index] = (GraphicalEditPart) lookForEditPart(currentAnnotatedElement);
-			index += 1;
-		}
-
-		// 2. creation of the node Comment
-		IAdaptable elementAdapter = new EObjectAdapter(constraint);
-		ViewDescriptor descriptor = new ViewDescriptor(elementAdapter, Node.class, commentType.getSemanticHint(), ViewUtil.APPEND, true, diagramPreferencesHint);
-		CreateCommand nodeCreationCommand = new CreateCommand(getEditingDomain(), descriptor, (containerView));
-		cc.compose(nodeCreationCommand);
-
-		SetBoundsCommand setBoundsCommand = new SetBoundsCommand(getEditingDomain(), "move", (IAdaptable) nodeCreationCommand.getCommandResult().getReturnValue(), location);
-		cc.compose(setBoundsCommand);
-
-		if (nbAnnotated != 0) {
-			IAdaptable sourceEventAdapter = null;
-			IAdaptable targetEventAdapter = null;
-
-			// obtain the node figure
-			sourceEventAdapter = (IAdaptable) nodeCreationCommand.getCommandResult().getReturnValue();
-
-			// used in the creation command of each event
-			ConnectionViewDescriptor dashedLineViewDescriptor = new ConnectionViewDescriptor(linkForComment, linkForComment.getSemanticHint(), diagramPreferencesHint);
-
-			// 3. creation of the dashed line between the Comment and the
-			// annotated element
-			for (GraphicalEditPart current : endEditPart) {
-				if (current != null) {
-					targetEventAdapter = new SemanticAdapter(null, current.getModel());
-					CommonDeferredCreateConnectionViewCommand dashedLineCmd = new CommonDeferredCreateConnectionViewCommand(getEditingDomain(), linkForComment.getSemanticHint(), (sourceEventAdapter), (targetEventAdapter), viewer, diagramPreferencesHint,
-							dashedLineViewDescriptor, null);
-					// dashedLineCmd.setElement(constraint);
-					dashedLineCmd.setElement(null);
-					if (dashedLineCmd.canExecute()) {
-						cc.compose(dashedLineCmd);
-					}
-				}
-			}
-
-		}
-		return new ICommandProxy(cc);
-	}
-
-	/**
-	 * Returns The command to drop the {@link Comment} and the links, if the
-	 * attached elements are on the diagram
-	 *
-	 * @param comment
-	 *            the comment to drop
-	 * @param viewer
-	 *            the viewer
-	 * @param diagramPreferencesHint
-	 *            the diagram preference hint
-	 * @param location
-	 *            the location for the drop
-	 * @param containerView
-	 *            the container view for the drop
-	 * @param commentType
-	 *            the IHintedType for the {@link Comment}
-	 * @param linkForComment
-	 *            the IHintedType for the link which attach the {@link Comment} to the annotated Element
-	 * @return The command to drop the {@link Comment} and the link, if the
-	 *         attached elements are on the diagram
-	 */
-	protected Command getDropCommentCommand(Comment comment, EditPartViewer viewer, PreferencesHint diagramPreferencesHint, Point location, View containerView, IHintedType commentType, IHintedType linkForComment) {
-		/* for further information, see bug 302555 */
-		ViewServiceUtil.forceLoad();
-		CompositeCommand cc = new CompositeCommand("dropComment");
-		int nbAnnotated = comment.getAnnotatedElements().size();
-
-		// 0. Obtain list of the annotatedElement
-		ArrayList<Element> endToConnect = new ArrayList<>(comment.getAnnotatedElements());
-		GraphicalEditPart[] endEditPart = new GraphicalEditPart[nbAnnotated];
-
-		// 1. Look for if each annotated element is on the diagram
-		Iterator<Element> iteratorProp = endToConnect.iterator();
-		int index = 0;
-		while (iteratorProp.hasNext()) {
-			Element currentAnnotatedElement = iteratorProp.next();
-			endEditPart[index] = (GraphicalEditPart) lookForEditPart(currentAnnotatedElement);
-			index += 1;
-		}
-
-		// 2. creation of the node Comment
-		IAdaptable elementAdapter = new EObjectAdapter(comment);
-		ViewDescriptor descriptor = new ViewDescriptor(elementAdapter, Node.class, commentType.getSemanticHint(), ViewUtil.APPEND, true, diagramPreferencesHint);
-		CreateCommand nodeCreationCommand = new CreateCommand(getEditingDomain(), descriptor, (containerView));
-		cc.compose(nodeCreationCommand);
-
-		SetBoundsCommand setBoundsCommand = new SetBoundsCommand(getEditingDomain(), "move", (IAdaptable) nodeCreationCommand.getCommandResult().getReturnValue(), location);
-		cc.compose(setBoundsCommand);
-		// obtain the node figure
-		IAdaptable sourceEventAdapter = (IAdaptable) nodeCreationCommand.getCommandResult().getReturnValue();
-		IAdaptable targetEventAdapter = null;
-		if (nbAnnotated != 0) {
-
-			// used in the creation command of each event
-			ConnectionViewDescriptor dashedLineViewDescriptor = new ConnectionViewDescriptor(linkForComment, linkForComment.getSemanticHint(), diagramPreferencesHint);
-
-			// 3. creation of the dashed line between the Constraint and the
-			// constrained element
-			for (GraphicalEditPart current : endEditPart) {
-				if (current != null) {
-					targetEventAdapter = new SemanticAdapter(null, current.getModel());
-					CommonDeferredCreateConnectionViewCommand dashedLineCmd = new CommonDeferredCreateConnectionViewCommand(getEditingDomain(), linkForComment.getSemanticHint(), (sourceEventAdapter), (targetEventAdapter), viewer, diagramPreferencesHint,
-							dashedLineViewDescriptor, null);
-					// dashedLineCmd.setElement(comment);
-					dashedLineCmd.setElement(null);
-					if (dashedLineCmd.canExecute()) {
-						cc.compose(dashedLineCmd);
-					}
-				}
-			}
-
-		}
-		return new ICommandProxy(cc);
-	}
-
-	protected Point getTranslatedLocation(DropObjectsRequest dropRequest) {
-		Point location = dropRequest.getLocation().getCopy();
-		((GraphicalEditPart) getHost()).getContentPane().translateToRelative(location);
-		((GraphicalEditPart) getHost()).getContentPane().translateFromParent(location);
-		location.translate(((GraphicalEditPart) getHost()).getContentPane().getClientArea().getLocation().getNegated());
-		return location;
-	}
-
-	/**
-	 * <pre>
-	 * Returns the drop command for Affixed nodes (Parameter, Port).
-	 * This method uses PortPositionLocator used by both Port and Parameter.
-	 * If the dropped element is a Port, the graphical parent can be :
-	 * - a Class that owns or inherits the Port
-	 * - a Property which type owns or inherits the Port
-	 * </pre>
-	 *
-	 * @param dropRequest
-	 *            the drop request
-	 * @param droppedElement
-	 *            the element to drop
-	 * @param nodeVISUALID
-	 *            the visual identifier of the EditPart of the dropped element
-	 * @return the drop command
-	 */
-	protected Command dropAffixedNode(DropObjectsRequest dropRequest, Element droppedElement, String nodeVISUALID) {
-		// The dropped element must be a Port or Parameter
-		if (!((droppedElement instanceof Port) || (droppedElement instanceof Parameter))) {
-			// Log.getInstance().error(new Exception("Incorrect parameter type (droppedElement should be a Port or Parameter)"));
-			return UnexecutableCommand.INSTANCE;
-		}
-		// Manage Element drop in compartment
-		Boolean isCompartmentTarget = false; // True if the target is a
-												// ShapeCompartmentEditPart
-		GraphicalEditPart graphicalParentEditPart = (GraphicalEditPart) getHost();
-		// Default drop location
-		Point dropLocation = dropRequest.getLocation().getCopy();
-		// Detect if the drop target is a compartment
-		if (graphicalParentEditPart instanceof ShapeCompartmentEditPart) {
-			isCompartmentTarget = true;
-			// Replace compartment edit part by its parent EditPart
-			graphicalParentEditPart = (GraphicalEditPart) graphicalParentEditPart.getParent();
-			// Translate Port expected location according to the compartment
-			// location
-			Point targetLocation = graphicalParentEditPart.getContentPane().getBounds().getLocation();
-			ShapeCompartmentFigure compartmentFigure = (ShapeCompartmentFigure) getHostFigure();
-			// Retrieve ViewPort location = the area where compartment children
-			// are located
-			// Retrieve ViewPort view location = the relative location of the
-			// viewed compartment
-			// depending on the current scroll bar state
-			Viewport compartmentViewPort = compartmentFigure.getScrollPane().getViewport();
-			Point compartmentViewPortLocation = compartmentViewPort.getLocation();
-			Point compartmentViewPortViewLocation = compartmentViewPort.getViewLocation();
-			// Calculate the delta between the targeted element position for
-			// drop (the Composite figure)
-			// and the View location with eventual scroll bar.
-			Point delta = compartmentViewPortLocation.translate(targetLocation.negate());
-			delta = delta.translate(compartmentViewPortViewLocation.negate());
-			// Translate the requested drop location (relative to parent)
-			dropLocation = dropRequest.getLocation().getTranslated(delta);
-		}
-		// If SideAffixedNodesCreationEditPolicy installed to the parent then delegate calculation of the real drop location to it
-		if (!isSideAffixedNodesCreationPolicyInstalled(graphicalParentEditPart)) {
-			Point parentLoc = graphicalParentEditPart.getFigure().getBounds().getLocation().getCopy();
-			PortPositionLocator locator = new PortPositionLocator(graphicalParentEditPart.getFigure(), PositionConstants.NONE);
-			Rectangle proposedBounds = new Rectangle(dropLocation, new Dimension(20, 20));
-			proposedBounds = proposedBounds.getTranslated(parentLoc);
-			Rectangle preferredBounds = locator.getPreferredLocation(proposedBounds);
-			// Convert the calculated preferred bounds as relative to parent location
-			Rectangle creationBounds = preferredBounds.getTranslated(parentLoc.getNegated());
-			dropLocation = creationBounds.getLocation();
-		}
-		// Manage Element drop in compartment
-		// Create proposed creation bounds and use the locator to find the
-		// expected position
-		EObject graphicalParentObject = graphicalParentEditPart.resolveSemanticElement();
-		if ((graphicalParentObject instanceof EncapsulatedClassifier) && (((EncapsulatedClassifier) graphicalParentObject).getAllAttributes().contains(droppedElement))) {
-			// Drop Port on StructuredClassifier
-			if (isCompartmentTarget) {
-				return getDropAffixedNodeInCompartmentCommand(nodeVISUALID, dropLocation, droppedElement);
-			}
-			return new ICommandProxy(getDefaultDropNodeCommand(nodeVISUALID, dropLocation, droppedElement));
-		} else if (graphicalParentObject instanceof ConnectableElement) {
-			// Drop Port on Part
-			Type type = ((ConnectableElement) graphicalParentObject).getType();
-			if ((type != null) && (type instanceof EncapsulatedClassifier) && (((EncapsulatedClassifier) type).getAllAttributes().contains(droppedElement))) {
-				if (isCompartmentTarget) {
-					return getDropAffixedNodeInCompartmentCommand(nodeVISUALID, dropLocation, droppedElement);
-				}
-				return new ICommandProxy(getDefaultDropNodeCommand(nodeVISUALID, dropLocation, droppedElement));
-			}
-		} else if ((graphicalParentObject instanceof Behavior) && (((Behavior) graphicalParentObject).getOwnedParameters().contains(droppedElement))) {
-			// Drop Parameter on Behavior
-			if (isCompartmentTarget) {
-				return getDropAffixedNodeInCompartmentCommand(nodeVISUALID, dropLocation, droppedElement);
-			}
-			return new ICommandProxy(getDefaultDropNodeCommand(nodeVISUALID, dropLocation, droppedElement));
-		}
-		return UnexecutableCommand.INSTANCE;
-	}
-
-	/**
-	 * <pre>
-	 * This method returns the drop command for AffixedNode (Port, Parameter)
-	 * in case the node is dropped on a ShapeCompartmentEditPart.
-	 * </pre>
-	 *
-	 * @param nodeVISUALID
-	 *            the node visual identifier
-	 * @param location
-	 *            the drop location
-	 * @param droppedObject
-	 *            the object to drop
-	 * @return a CompositeCommand for Drop
-	 */
-	protected CompoundCommand getDropAffixedNodeInCompartmentCommand(String nodeVISUALID, Point location, EObject droppedObject) {
-		CompoundCommand cc = new CompoundCommand("Drop");
-		IAdaptable elementAdapter = new EObjectAdapter(droppedObject);
-		ViewDescriptor descriptor = new ViewDescriptor(elementAdapter, Node.class, ((IHintedType) getUMLElementType(nodeVISUALID)).getSemanticHint(), ViewUtil.APPEND, true, getDiagramPreferencesHint());
-		// Create the command targeting host parent (owner of the
-		// ShapeCompartmentEditPart)
-		CreateViewCommand createCommand = new CreateViewCommand(getEditingDomain(), descriptor, ((View) (getHost().getParent().getModel())));
-		cc.add(new ICommandProxy(createCommand));
-		SetBoundsCommand setBoundsCommand = new SetBoundsCommand(getEditingDomain(), "move", (IAdaptable) createCommand.getCommandResult().getReturnValue(), location);
-		cc.add(new ICommandProxy(setBoundsCommand));
-		return cc;
-	}
-
-	private boolean isSideAffixedNodesCreationPolicyInstalled(IGraphicalEditPart editPart) {
-		EditPolicy policy = editPart.getEditPolicy(EditPolicyRoles.CREATION_ROLE);
-		if (policy == null && false == policy instanceof CustomizableDropEditPolicy) {
-			return false;
-		}
-		EditPolicy defaultCreationPolicy = ((CustomizableDropEditPolicy) policy).getDefaultCreationPolicy();
-		return defaultCreationPolicy != null && defaultCreationPolicy instanceof SideAffixedNodesCreationEditPolicy;
-	}
-
-	/**
-	 * the method provides command to create the binary link into the diagram.
-	 * Find source/target adapter
-	 * If the source and the target views do not exist, these views will be
-	 * created.
-	 *
-	 * @see dropBinaryLink(CompositeCommand cc, Element source, Element target, int linkVISUALID
-	 *      , Point absoluteLocation, Element semanticLink)
-	 *
-	 * @param cc
-	 *            the composite command that will contain the set of command to
-	 *            create the binary link
-	 * @param source
-	 *            source/target link node
-	 * @param point
-	 *            source/target node location
-	 */
-	private IAdaptable findAdapter(CompositeCommand cc, Element source, Point dropLocation) {
-		IAdaptable result = getElement2IAdaptableRegistryHelper().findAdapter(source);
-		if (result != null) {
-			return result;
-		}
-		GraphicalEditPart editPart = (GraphicalEditPart) lookForEditPart(source);
-		if (editPart == null) {
-			ICommand createCommand = getDefaultDropNodeCommand(dropLocation, source);
-			cc.add(createCommand);
-			result = (IAdaptable) createCommand.getCommandResult().getReturnValue();
-			return result;
-		} else {
-			return new SemanticAdapter(null, editPart.getModel());
-		}
-	}
-
-
-
-}
+/*****************************************************************************
+ * Copyright (c) 2009, 2015 CEA LIST, Christian W. Damus, and others.
+ *
+ *
+ * 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
+ *  Emilien Perico (Atos Origin) emilien.perico@atosorigin.com - refactor common behavior between diagrams
+ *  Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - add the line 	ViewServiceUtil.forceLoad();
+ *  Christian W. Damus (CEA) - bug 430726
+ *  Benoit Maggi (CEA LIST) benoit.maggi@cea.fr - bug 450341
+ *  Christian W. Damus - bug 450944
+ *  Christian W. Damus - bug 477384
+ *  Fanch Bonnabesse (ALL4TEC) fanch.bonnabesse@alltec.net - Bug 493430
+ *****************************************************************************/
+package org.eclipse.papyrus.uml.diagram.common.editpolicies;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.List;
+
+import org.eclipse.core.commands.operations.IUndoableOperation;
+import org.eclipse.core.runtime.IAdaptable;
+import org.eclipse.draw2d.PositionConstants;
+import org.eclipse.draw2d.Viewport;
+import org.eclipse.draw2d.geometry.Dimension;
+import org.eclipse.draw2d.geometry.Point;
+import org.eclipse.draw2d.geometry.Rectangle;
+import org.eclipse.emf.ecore.EClass;
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.emf.transaction.TransactionalEditingDomain;
+import org.eclipse.gef.EditPart;
+import org.eclipse.gef.EditPartViewer;
+import org.eclipse.gef.EditPolicy;
+import org.eclipse.gef.commands.Command;
+import org.eclipse.gef.commands.CompoundCommand;
+import org.eclipse.gef.commands.UnexecutableCommand;
+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.preferences.PreferencesHint;
+import org.eclipse.gmf.runtime.diagram.core.util.ViewUtil;
+import org.eclipse.gmf.runtime.diagram.ui.commands.CommandProxy;
+import org.eclipse.gmf.runtime.diagram.ui.commands.CreateCommand;
+import org.eclipse.gmf.runtime.diagram.ui.commands.ICommandProxy;
+import org.eclipse.gmf.runtime.diagram.ui.commands.SetBoundsCommand;
+import org.eclipse.gmf.runtime.diagram.ui.editparts.CompartmentEditPart;
+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.IGraphicalEditPart;
+import org.eclipse.gmf.runtime.diagram.ui.editparts.ListCompartmentEditPart;
+import org.eclipse.gmf.runtime.diagram.ui.editparts.ShapeCompartmentEditPart;
+import org.eclipse.gmf.runtime.diagram.ui.editpolicies.EditPolicyRoles;
+import org.eclipse.gmf.runtime.diagram.ui.figures.ShapeCompartmentFigure;
+import org.eclipse.gmf.runtime.diagram.ui.requests.CreateConnectionViewRequest;
+import org.eclipse.gmf.runtime.diagram.ui.requests.CreateConnectionViewRequest.ConnectionViewDescriptor;
+import org.eclipse.gmf.runtime.diagram.ui.requests.CreateViewRequest;
+import org.eclipse.gmf.runtime.diagram.ui.requests.CreateViewRequest.ViewDescriptor;
+import org.eclipse.gmf.runtime.diagram.ui.requests.DropObjectsRequest;
+import org.eclipse.gmf.runtime.emf.core.util.EObjectAdapter;
+import org.eclipse.gmf.runtime.emf.type.core.IElementType;
+import org.eclipse.gmf.runtime.emf.type.core.IHintedType;
+import org.eclipse.gmf.runtime.notation.Diagram;
+import org.eclipse.gmf.runtime.notation.Node;
+import org.eclipse.gmf.runtime.notation.View;
+import org.eclipse.papyrus.commands.wrappers.CommandProxyWithResult;
+import org.eclipse.papyrus.infra.gmfdiag.common.adapter.SemanticAdapter;
+import org.eclipse.papyrus.infra.gmfdiag.common.commands.CommonDeferredCreateConnectionViewCommand;
+import org.eclipse.papyrus.infra.gmfdiag.common.commands.CreateViewCommand;
+import org.eclipse.papyrus.infra.gmfdiag.common.commands.SemanticElementAdapter;
+import org.eclipse.papyrus.infra.gmfdiag.common.editpolicies.AbstractDiagramDragDropEditPolicy;
+import org.eclipse.papyrus.infra.gmfdiag.common.service.visualtype.VisualTypeService;
+import org.eclipse.papyrus.infra.gmfdiag.common.utils.DiagramEditPartsUtil;
+import org.eclipse.papyrus.infra.gmfdiag.common.utils.ViewServiceUtil;
+import org.eclipse.papyrus.infra.gmfdiag.dnd.policy.CustomizableDropEditPolicy;
+import org.eclipse.papyrus.infra.tools.util.TypeUtils;
+import org.eclipse.papyrus.uml.diagram.common.commands.DeferredCreateCommand;
+import org.eclipse.papyrus.uml.diagram.common.helper.Element2IAdaptableRegistryHelper;
+import org.eclipse.papyrus.uml.diagram.common.helper.ILinkMappingHelper;
+import org.eclipse.papyrus.uml.diagram.common.listeners.DropTargetListener;
+import org.eclipse.papyrus.uml.diagram.common.locator.PortPositionLocator;
+import org.eclipse.swt.dnd.DND;
+import org.eclipse.uml2.uml.Association;
+import org.eclipse.uml2.uml.Behavior;
+import org.eclipse.uml2.uml.Comment;
+import org.eclipse.uml2.uml.ConnectableElement;
+import org.eclipse.uml2.uml.Constraint;
+import org.eclipse.uml2.uml.Element;
+import org.eclipse.uml2.uml.EncapsulatedClassifier;
+import org.eclipse.uml2.uml.Parameter;
+import org.eclipse.uml2.uml.Port;
+import org.eclipse.uml2.uml.Property;
+import org.eclipse.uml2.uml.Type;
+
+/**
+ * This class is used to execute the drag and drop from the outline. It can
+ * manage the drop of nodes and binary links.
+ */
+public abstract class CommonDiagramDragDropEditPolicy extends AbstractDiagramDragDropEditPolicy {
+
+	private Element2IAdaptableRegistryHelper myElement2IAdaptableRegistryHelper;
+
+
+
+	/** The specified link mapping helper depending on the diagram */
+	protected ILinkMappingHelper linkmappingHelper;
+
+	/**
+	 * Instantiates a new custom diagram drag drop edit policy.
+	 *
+	 * @param mappingHelper
+	 *            the mapping helper
+	 */
+	public CommonDiagramDragDropEditPolicy(ILinkMappingHelper mappingHelper) {
+		linkmappingHelper = mappingHelper;
+	}
+
+
+	/**
+	 * Gets the UML element type for the specified
+	 *
+	 * @param elementID
+	 *            the element id
+	 *
+	 * @return the uML element type
+	 */
+	public IElementType getUMLElementType(String elementID) {
+		return VisualTypeService.getInstance().getElementType(getContextDiagram(), elementID);
+	}
+
+	public String getNodeVisualID(View containerView, EObject domainElement) {
+		return VisualTypeService.getInstance().getNodeType(containerView, domainElement);
+	}
+
+	public String getLinkWithClassVisualID(EObject domainElement) {
+		return VisualTypeService.getInstance().getLinkType(getContextDiagram(), domainElement);
+	}
+
+	/**
+	 * Gets the notational diagram in which my host edit part is rendering a view.
+	 *
+	 * @return the contextual diagram
+	 */
+	protected Diagram getContextDiagram() {
+		View view = TypeUtils.as(getHost().getModel(), View.class);
+		return (view == null) ? null : view.getDiagram();
+	}
+
+	/**
+	 * Gets composite command adapters
+	 */
+	protected Element2IAdaptableRegistryHelper getElement2IAdaptableRegistryHelper() {
+		if (myElement2IAdaptableRegistryHelper == null) {
+			myElement2IAdaptableRegistryHelper = new Element2IAdaptableRegistryHelper();
+		}
+		return myElement2IAdaptableRegistryHelper;
+	}
+
+	/**
+	 * {@inheritedDoc}
+	 */
+	@Override
+	protected Command createViewsAndArrangeCommand(DropObjectsRequest dropRequest, List viewDescriptors) {
+		CreateViewRequest createViewRequest = new CreateViewRequest(viewDescriptors);
+		createViewRequest.setLocation(dropRequest.getLocation());
+		Command createCommand = getHost().getCommand(createViewRequest);
+		return createCommand;
+	}
+
+	/**
+	 * the method provides command to create the binary link into the diagram.
+	 * If the source and the target views do not exist, these views will be
+	 * created.
+	 *
+	 * @param cc
+	 *            the composite command that will contain the set of command to
+	 *            create the binary link
+	 * @param source
+	 *            the source the element source of the link
+	 * @param target
+	 *            the target the element target of the link
+	 * @param linkVISUALID
+	 *            the link VISUALID used to create the view
+	 * @param location
+	 *            the location the location where the view will be be created
+	 * @param semanticLink
+	 *            the semantic link that will be attached to the view
+	 *
+	 * @return the composite command
+	 */
+	public CompositeCommand dropBinaryLink(CompositeCommand cc, Element source, Element target, String linkVISUALID, Point absoluteLocation, Element semanticLink) {
+		IAdaptable sourceAdapter = findAdapter(cc, source, getLinkSourceDropLocation(absoluteLocation, source, target));
+		IAdaptable targetAdapter = findAdapter(cc, target, getLinkTargetDropLocation(absoluteLocation, source, target));
+		// descriptor of the link
+
+		SemanticElementAdapter adapter = new SemanticElementAdapter(semanticLink, getUMLElementType(linkVISUALID));
+		CreateConnectionViewRequest.ConnectionViewDescriptor linkdescriptor = new CreateConnectionViewRequest.ConnectionViewDescriptor(adapter, ((IHintedType) getUMLElementType(linkVISUALID)).getSemanticHint(),
+				getDiagramPreferencesHint());
+
+		CommonDeferredCreateConnectionViewCommand aLinkCommand = new CommonDeferredCreateConnectionViewCommand(getEditingDomain(), ((IHintedType) getUMLElementType(linkVISUALID)).getSemanticHint(), sourceAdapter, targetAdapter, getViewer(),
+				getDiagramPreferencesHint(), linkdescriptor, null);
+		aLinkCommand.setElement(semanticLink);
+		cc.compose(aLinkCommand);
+		return cc;
+	}
+
+	/**
+	 * This method allows to specify a location for the creation of a node at
+	 * the source of a dropped link. Overriding implementations must not modify
+	 * the absoluteLocation parameter (use {@link Point#getCopy()})
+	 *
+	 * @param absoluteLocation
+	 *            the request's drop location
+	 * @param source
+	 *            the source of the dropped link
+	 * @param target
+	 *            the target of the dropped link
+	 * @return the new location for the node
+	 */
+	protected Point getLinkSourceDropLocation(Point absoluteLocation, Element source, Element target) {
+		return absoluteLocation;
+	}
+
+	/**
+	 * This method allows to specify a location for the creation of a node at
+	 * the target of a dropped link. Overriding implementations must not modify
+	 * the absoluteLocation parameter (use {@link Point#getCopy()})
+	 *
+	 * @param absoluteLocation
+	 *            the request's drop location
+	 * @param source
+	 *            the source of the dropped link
+	 * @param target
+	 *            the target of the dropped link
+	 * @return the new location for the node
+	 */
+	protected Point getLinkTargetDropLocation(Point absoluteLocation, Element source, Element target) {
+		if (lookForEditPart(source) == null && lookForEditPart(target) == null) {
+			return absoluteLocation.getTranslated(100, 0);
+		}
+		return absoluteLocation;
+	}
+
+	/**
+	 * Gets the diagram preferences hint.
+	 *
+	 * @return the diagram preferences hint
+	 */
+	protected PreferencesHint getDiagramPreferencesHint() {
+		return ((IGraphicalEditPart) getHost()).getDiagramPreferencesHint();
+	}
+
+	/**
+	 * {@inheritedDoc}.
+	 */
+	@Override
+	public Command getDropObjectsCommand(DropObjectsRequest dropRequest) {
+		/*
+		 * when it's the first action after the opening of Papyrus, the
+		 * viewService is not loaded! see bug 302555
+		 *
+		 * Duration test for 100000 creations of DropCommand : Here 2 solutions
+		 * : - call ViewServiceUtil.forceLoad(); for each drop -> ~2500ms
+		 *
+		 * - test if the command cc can be executed at the end of the method,
+		 * and if not : - call ViewServiceUtil.forceLoad(); - and return
+		 * getDropObjectsCommand(getDropObjectsCommand) -> ~4700ms
+		 *
+		 * - for information : without call ViewServiceUtil.forceLoad(); ->
+		 * ~1600ms
+		 *
+		 * It's better don't test if the command is executable!
+		 */
+		ViewServiceUtil.forceLoad();
+
+		if (dropRequest.getObjects().size() > 0 && dropRequest.getObjects().get(0) instanceof String) {
+			return getDropFileCommand(dropRequest);
+		}
+
+		// Create a view request from the drop request and then forward getting
+		// the command for that.
+		CompositeCommand cc = new CompositeCommand("Drop"); //$NON-NLS-1$
+		Iterator<?> iter = dropRequest.getObjects().iterator();
+
+		while (iter.hasNext()) {
+			EObject droppedObject = (EObject) iter.next();
+			if (droppedObject instanceof Element && getElement2IAdaptableRegistryHelper().findAdapter((Element) droppedObject) != null) {
+				continue;
+			}
+			cc.add(getDropObjectCommand(dropRequest, droppedObject));
+		}
+		getElement2IAdaptableRegistryHelper().clear();
+		return new ICommandProxy(cc);
+	}
+
+	protected IUndoableOperation getDropObjectCommand(DropObjectsRequest dropRequest, EObject droppedObject) {
+		Point location = dropRequest.getLocation().getCopy();
+		IGraphicalEditPart parent = (IGraphicalEditPart) getHost();
+		boolean isParentDiagram = getHost().getModel() instanceof Diagram;
+		String nodeVISUALID = getNodeVisualID(parent.getNotationView(), droppedObject);
+		String linkVISUALID = getLinkWithClassVisualID(droppedObject);
+		if (getSpecificDrop().contains(nodeVISUALID) || getSpecificDrop().contains(linkVISUALID)) {
+			if (!isParentDiagram && !isDropNonCanvasNodeAllowed(parent, droppedObject)) {
+				return org.eclipse.gmf.runtime.common.core.command.UnexecutableCommand.INSTANCE;
+			}
+			Command specificDropCommand = getSpecificDropCommand(dropRequest, (Element) droppedObject, nodeVISUALID, linkVISUALID);
+			CompositeCommand cc = new CompositeCommand("Drop command");
+			cc.compose(new CommandProxy(specificDropCommand));
+			// If ctrl key activate, get the content of element dropped
+			if (isCopy(dropRequest)) {
+				// Check for ICommandProxy and CompoundCommand the most command type used
+				if (specificDropCommand instanceof ICommandProxy) {
+					ICommandProxy specificDropCommandProxy = (ICommandProxy) specificDropCommand;
+					createDeferredCommandWithCommandResult(droppedObject, cc, specificDropCommandProxy);
+				} else if (specificDropCommand instanceof CompoundCommand) {
+					CompoundCommand specificDropCompoundCommand = (CompoundCommand) specificDropCommand;
+					ICommandProxy cp = getCommandProxyFromCompoundCommand(specificDropCompoundCommand);
+					if (cp != null) {
+						createDeferredCommandWithCommandResult(droppedObject, cc, cp);
+					}
+				}
+			}
+			return cc;
+		}
+
+		if ((linkVISUALID == null || linkVISUALID.isEmpty()) && nodeVISUALID != null) {
+			// The element to drop is a node
+			// Retrieve it's expected graphical parent
+			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
+			if (isParentDiagram) {
+				return getDefaultDropNodeCommand(nodeVISUALID, location, droppedObject, dropRequest);
+			} else if (((graphicalParent instanceof Element) && ((Element) graphicalParent).getOwnedElements().contains(droppedObject)) && isDropNonCanvasNodeAllowed(parent, droppedObject)) {
+				return getDefaultDropNodeCommand(nodeVISUALID, location, droppedObject, dropRequest);
+			}
+			return org.eclipse.gmf.runtime.common.core.command.UnexecutableCommand.INSTANCE;
+
+		}
+		if (linkVISUALID != null && !linkVISUALID.isEmpty()) {
+			Collection<?> sources = linkmappingHelper.getSource((Element) droppedObject);
+			Collection<?> targets = linkmappingHelper.getTarget((Element) droppedObject);
+			if (sources.size() == 0 || targets.size() == 0) {
+				return org.eclipse.gmf.runtime.common.core.command.UnexecutableCommand.INSTANCE;
+			}
+			// binary association
+			Element source = (Element) sources.toArray()[0];
+			Element target = (Element) targets.toArray()[0];
+			CompositeCommand cc = new CompositeCommand("Add Link"); //$NON-NLS-1$
+			dropBinaryLink(cc, source, target, linkVISUALID, location, (Element) droppedObject);
+			return cc;
+		}
+		return org.eclipse.gmf.runtime.common.core.command.UnexecutableCommand.INSTANCE;
+	}
+
+	/**
+	 * Is dropping allowed for the non-canvas parent
+	 *
+	 * @param parent
+	 * @param droppedObject
+	 * @return true or false
+	 */
+	protected boolean isDropNonCanvasNodeAllowed(IGraphicalEditPart parent, EObject droppedObject) {
+		if (isListCompartmentContainsDroppedObject(parent, droppedObject)) {
+			return false;
+		}
+		if (droppedObject instanceof Property) {
+			Property property = (Property) droppedObject;
+			if (property.getOwner() instanceof Association){
+				return false;
+			}
+		}
+		return true;
+	}
+
+	private boolean isListCompartmentContainsDroppedObject(IGraphicalEditPart parent, EObject droppedObject) {
+		if (false == parent instanceof ListCompartmentEditPart) {
+			return false;
+		}
+		@SuppressWarnings("unchecked")
+		List<EditPart> childs = parent.getChildren();
+		for (EditPart nextChild : childs) {
+			if (!(nextChild instanceof GraphicalEditPart)) {
+				continue;
+			}
+			EObject nextChildSemantic = ((GraphicalEditPart) nextChild).resolveSemanticElement();
+			if (nextChildSemantic == droppedObject) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+	/**
+	 * Get a command proxy from the compound command
+	 *
+	 * @param cc
+	 *            the compound command
+	 * @return the command proxy found or null
+	 */
+	protected ICommandProxy getCommandProxyFromCompoundCommand(CompoundCommand cc) {
+		if (cc != null && cc.getCommands() != null) {
+			for (Object command : cc.getCommands()) {
+				if (command instanceof ICommandProxy) {
+					return (ICommandProxy) command;
+				} else if (command instanceof CompoundCommand) {
+					getCommandProxyFromCompoundCommand((CompoundCommand) command);
+				}
+			}
+		}
+		return null;
+	}
+
+	/**
+	 * Create deferred command for a command proxy
+	 *
+	 * @param droppedObject
+	 *            the dropped object
+	 * @param cc
+	 *            the composite command to add the deferred command
+	 * @param specificDropCommandProxy
+	 *            the specific drop command to get the result
+	 */
+	protected void createDeferredCommandWithCommandResult(EObject droppedObject, CompositeCommand cc, ICommandProxy specificDropCommandProxy) {
+		if (specificDropCommandProxy != null && specificDropCommandProxy.getICommand() != null && specificDropCommandProxy.getICommand().getCommandResult() != null && specificDropCommandProxy.getICommand().getCommandResult().getReturnValue() != null) {
+			Object object = specificDropCommandProxy.getICommand().getCommandResult().getReturnValue();
+			if (object instanceof CreateViewRequest.ViewDescriptor) {
+				cc.compose(createDeferredCreateCommand(droppedObject, (CreateViewRequest.ViewDescriptor) object));
+			} else if (object instanceof Collection<?>) {
+				for (Object o : (Collection<?>) object) {
+					if (o instanceof CreateViewRequest.ViewDescriptor) {
+						cc.compose(createDeferredCreateCommand(droppedObject, (CreateViewRequest.ViewDescriptor) o));
+					}
+				}
+			}
+		}
+	}
+
+	private DeferredCreateCommand createDeferredCreateCommand(EObject droppedObject, CreateViewRequest.ViewDescriptor viewDescriptor) {
+		return new DeferredCreateCommand(getEditingDomain(), droppedObject, viewDescriptor, getHost().getViewer());
+	}
+
+	/**
+	 * Get a new Point translated to relative coordinate
+	 *
+	 * @param absoluteLocation
+	 *            the absolute point
+	 * @return the relative point
+	 */
+	protected Point getTranslatedToRelative(Point absoluteLocation) {
+		Point relativeLocation = absoluteLocation.getCopy();
+		((GraphicalEditPart) getHost()).getContentPane().translateToRelative(relativeLocation);
+		((GraphicalEditPart) getHost()).getContentPane().translateFromParent(relativeLocation);
+		relativeLocation.translate(((GraphicalEditPart) getHost()).getContentPane().getClientArea().getLocation().getNegated());
+		return relativeLocation;
+	}
+
+	/**
+	 * This method returns the default drop command for node. It create the view
+	 * at the specified location, using the gmf command framework so the
+	 * policies are used.
+	 *
+	 * @param nodeVISUALID
+	 *            the node visual identifier
+	 * @param location
+	 *            the drop location
+	 * @param droppedObject
+	 *            the object to drop
+	 * @param request
+	 *            the drop request
+	 * @return the creation node command
+	 */
+	protected ICommand getDefaultDropNodeCommand(String nodeVISUALID, Point absoluteLocation, EObject droppedObject, DropObjectsRequest request) {
+		return getDefaultDropNodeCommand(getHost(), nodeVISUALID, absoluteLocation, droppedObject);
+	}
+
+	/**
+	 * This method returns the default drop command for node. It create the view
+	 * at the specified location, using the gmf command framework so the
+	 * policies are used.
+	 *
+	 * @param nodeVISUALID
+	 *            the node visual identifier
+	 * @param location
+	 *            the drop location
+	 * @param droppedObject
+	 *            the object to drop
+	 * @return the creation node command
+	 */
+	protected ICommand getDefaultDropNodeCommand(String nodeVISUALID, Point absoluteLocation, EObject droppedObject) {
+		return getDefaultDropNodeCommand(nodeVISUALID, absoluteLocation, droppedObject, null);
+	}
+
+	/**
+	 * This method returns the default drop command for node. It create the view
+	 * at the specified location, using the gmf command framework so the
+	 * policies are used.
+	 *
+	 * @param location
+	 *            the drop location
+	 * @param droppedObject
+	 *            the object to drop
+	 * @return the creation node command
+	 */
+	protected ICommand getDefaultDropNodeCommand(Point absoluteLocation, EObject droppedObject) {
+		return getDefaultDropNodeCommand(getHost(), null, absoluteLocation, droppedObject);
+	}
+
+	/**
+	 * This method returns the default drop command for node. It create the view
+	 * at the specified location, using the gmf command framework so the
+	 * policies are used.
+	 *
+	 * @param hostEP
+	 *            The host edit part which will be the parent of the new node
+	 * @param location
+	 *            the drop location
+	 * @param droppedObject
+	 *            the object to drop
+	 * @return the creation node command
+	 */
+	protected ICommand getDefaultDropNodeCommand(EditPart hostEP, Point absoluteLocation, EObject droppedObject) {
+		return getDefaultDropNodeCommand(hostEP, null, absoluteLocation, droppedObject);
+	}
+
+	/**
+	 * This method returns the default drop command for node. It create the view
+	 * at the specified location, using the gmf command framework so the
+	 * policies are used.
+	 *
+	 * @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
+	 * @return the creation node command
+	 */
+	protected ICommand getDefaultDropNodeCommand(EditPart hostEP, String semanticHint, Point absoluteLocation, EObject droppedObject) {
+		return getDefaultDropNodeCommand(hostEP, semanticHint, absoluteLocation, droppedObject, null);
+	}
+
+	/**
+	 * This method returns the default drop command for node. It create the view
+	 * at the specified location, using the gmf command framework so the
+	 * policies are used.
+	 * If the ctrl key is pressed, do a command to add content of the new node
+	 *
+	 * @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
+	 */
+	protected ICommand getDefaultDropNodeCommand(EditPart hostEP, String semanticHint, Point absoluteLocation, EObject droppedObject, DropObjectsRequest request) {
+		DiagramEditPartsUtil.findViews(droppedObject, getViewer());
+
+		// only allow one view instance of a single element by diagram
+		// if(existingViews.isEmpty()) {
+		IAdaptable elementAdapter = new EObjectAdapter(droppedObject);
+
+		ViewDescriptor descriptor = new ViewDescriptor(elementAdapter, Node.class, semanticHint, ViewUtil.APPEND, true, getDiagramPreferencesHint());
+		CreateViewRequest createViewRequest = new CreateViewRequest(descriptor);
+		createViewRequest.setLocation(absoluteLocation);
+
+		// "ask" the host for a command associated with the
+		// CreateViewRequest
+		Command command = hostEP.getCommand(createViewRequest);
+		if (isCopy(request) && createViewRequest.getNewObject() instanceof List) {
+			for (Object object : (List<?>) createViewRequest.getNewObject()) {
+				if (object instanceof IAdaptable) {
+					DeferredCreateCommand createCommand2 = new DeferredCreateCommand(getEditingDomain(), droppedObject, (IAdaptable) object, getHost().getViewer());
+					command.chain(new ICommandProxy(createCommand2));
+				}
+			}
+		}
+		// set the viewdescriptor as result
+		// it then can be used as an adaptable to retrieve the View
+		ICommand result = new CommandProxyWithResult(command, descriptor);
+		if (droppedObject instanceof Element) {
+			getElement2IAdaptableRegistryHelper().registerAdapter((Element) droppedObject, (IAdaptable) result.getCommandResult().getReturnValue());
+		}
+		return result;
+	}
+
+	/**
+	 * Check if the ctrl key event is activate
+	 *
+	 * @param dropRequest
+	 *            the request which contain the event
+	 * @return true if ctrl key is activate, else return false
+	 */
+	public boolean isCopy(DropObjectsRequest dropRequest) {
+		if (dropRequest != null && dropRequest.getExtendedData() != null && dropRequest.getExtendedData().get(DropTargetListener.EVENT_DETAIL) instanceof Integer) {
+			int eventDetail = (Integer) dropRequest.getExtendedData().get(DropTargetListener.EVENT_DETAIL);
+			if (((eventDetail & DND.DROP_COPY) != 0)) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+	/**
+	 * Gets the editing domain.
+	 *
+	 * @return the editing domain
+	 */
+	protected TransactionalEditingDomain getEditingDomain() {
+		return ((IGraphicalEditPart) getHost()).getEditingDomain();
+	}
+
+	/**
+	 * for specific case of drop, the designers has to write the algorithm of
+	 * its own drop. for example case of associationClass, multi dependency
+	 * etc....
+	 *
+	 * @param dropRequest
+	 *            the drop request
+	 * @param nodeVISUALID
+	 *            the node visualid
+	 * @param linkVISUALID
+	 *            the link visualid
+	 * @param semanticLink
+	 *            the semantic link
+	 *
+	 * @return the specific drop command
+	 */
+	protected Command getSpecificDropCommand(DropObjectsRequest dropRequest, Element semanticLink, String nodeVISUALID, String linkVISUALID) {
+		return UnexecutableCommand.INSTANCE;
+	}
+
+	/**
+	 * Gets the viewer.
+	 *
+	 * @return the viewer
+	 */
+	protected EditPartViewer getViewer() {
+		return ((IGraphicalEditPart) getHost()).getViewer();
+	}
+
+	/**
+	 * Look for editPart from its semantic.
+	 *
+	 * @param semantic
+	 *            the semantic
+	 *
+	 * @return the edits the part or null if not found
+	 */
+	protected EditPart lookForEditPart(EObject semantic) {
+		Collection<EditPart> editPartSet = getHost().getViewer().getEditPartRegistry().values();
+		Iterator<EditPart> editPartIterator = editPartSet.iterator();
+		EditPart existedEditPart = null;
+		while (editPartIterator.hasNext() && existedEditPart == null) {
+			EditPart currentEditPart = editPartIterator.next();
+
+			if (isEditPartTypeAdapted(currentEditPart.getClass(), semantic.eClass()) && semantic.equals(((GraphicalEditPart) currentEditPart).resolveSemanticElement())) {
+				existedEditPart = currentEditPart;
+			}
+		}
+		return existedEditPart;
+	}
+
+	/**
+	 * Check if the edit part type is the best one to represent an object of the
+	 * given EClass type
+	 *
+	 * @param editPartClass
+	 *            the type of EditPart which may represent a semantic element
+	 * @param eClass
+	 *            the EClass type of the represented semantic element
+	 * @return true if an edit part of this type should be selected
+	 */
+	private boolean isEditPartTypeAdapted(Class<? extends EditPart> editPartClass, EClass eClass) {
+		if (DiagramEditPart.class.isAssignableFrom(editPartClass) || CompartmentEditPart.class.isAssignableFrom(editPartClass)) {
+			// the edit part is disqualified, as a compartment or a diagram can
+			// not be dropped
+			return false;
+		} else if (GraphicalEditPart.class.isAssignableFrom(editPartClass)) {
+			// check the edit part type against advised ones
+			return isEditPartTypeSuitableForEClass(editPartClass.asSubclass(GraphicalEditPart.class), eClass);
+		} else {
+			// only a GraphicalEditPart must be selected
+			return false;
+		}
+	}
+
+	/**
+	 * Check if an edit part type correctly represent a semantic element of the
+	 * given EClass. Subclasses should implement this method to restrict the
+	 * possibilities during drop of a link. If an edit part is not of a suitable
+	 * type, returning false will eliminate it to represent the element as a
+	 * source or target edit part. This can be used for example to disable label
+	 * edit parts, which may represent the same model element as the main node.
+	 *
+	 * @param editPartClass
+	 *            the type of EditPart which must be checked
+	 * @param eClass
+	 *            the EClass type of the element which the edit part must
+	 *            represent
+	 * @return the only edit part type which can be selected (return a common
+	 *         super type if several edit parts can be chosen)
+	 */
+	protected boolean isEditPartTypeSuitableForEClass(Class<? extends GraphicalEditPart> editPartClass, EClass eClass) {
+		return true;
+	}
+
+	/**
+	 * Returns The command to drop the {@link Constraint} and the links, if the
+	 * constraints elements are on the diagram
+	 *
+	 * @param comment
+	 *            the comment to drop
+	 * @param viewer
+	 *            the viewer
+	 * @param diagramPreferencesHint
+	 *            the diagram preference hint
+	 * @param location
+	 *            the location for the drop
+	 * @param containerView
+	 *            the container view for the drop
+	 * @param commentType
+	 *            the IHintedType for the {@link Comment}
+	 * @param linkForComment
+	 *            the IHintedType for the link which attach the {@link Comment} to the annotated Element
+	 * @return The command to drop the {@link Constraint} and the links, if the
+	 *         constraints elements are on the diagram
+	 */
+	protected Command getDropConstraintCommand(Constraint constraint, EditPartViewer viewer, PreferencesHint diagramPreferencesHint, Point location, View containerView, IHintedType commentType, IHintedType linkForComment) {
+		/* for further information, see bug 302555 */
+		CompositeCommand cc = new CompositeCommand("dropConstraint");
+		int nbAnnotated = constraint.getConstrainedElements().size();
+
+		// 0. Obtain list of the annotatedElement
+		ArrayList<Element> endToConnect = new ArrayList<>(constraint.getConstrainedElements());
+		GraphicalEditPart[] endEditPart = new GraphicalEditPart[nbAnnotated];
+
+		// 1. Look for if each annotated element is on the diagram
+		Iterator<Element> iteratorProp = endToConnect.iterator();
+		int index = 0;
+		while (iteratorProp.hasNext()) {
+			Element currentAnnotatedElement = iteratorProp.next();
+			endEditPart[index] = (GraphicalEditPart) lookForEditPart(currentAnnotatedElement);
+			index += 1;
+		}
+
+		// 2. creation of the node Comment
+		IAdaptable elementAdapter = new EObjectAdapter(constraint);
+		ViewDescriptor descriptor = new ViewDescriptor(elementAdapter, Node.class, commentType.getSemanticHint(), ViewUtil.APPEND, true, diagramPreferencesHint);
+		CreateCommand nodeCreationCommand = new CreateCommand(getEditingDomain(), descriptor, (containerView));
+		cc.compose(nodeCreationCommand);
+
+		SetBoundsCommand setBoundsCommand = new SetBoundsCommand(getEditingDomain(), "move", (IAdaptable) nodeCreationCommand.getCommandResult().getReturnValue(), location);
+		cc.compose(setBoundsCommand);
+
+		if (nbAnnotated != 0) {
+			IAdaptable sourceEventAdapter = null;
+			IAdaptable targetEventAdapter = null;
+
+			// obtain the node figure
+			sourceEventAdapter = (IAdaptable) nodeCreationCommand.getCommandResult().getReturnValue();
+
+			// used in the creation command of each event
+			ConnectionViewDescriptor dashedLineViewDescriptor = new ConnectionViewDescriptor(linkForComment, linkForComment.getSemanticHint(), diagramPreferencesHint);
+
+			// 3. creation of the dashed line between the Comment and the
+			// annotated element
+			for (GraphicalEditPart current : endEditPart) {
+				if (current != null) {
+					targetEventAdapter = new SemanticAdapter(null, current.getModel());
+					CommonDeferredCreateConnectionViewCommand dashedLineCmd = new CommonDeferredCreateConnectionViewCommand(getEditingDomain(), linkForComment.getSemanticHint(), (sourceEventAdapter), (targetEventAdapter), viewer, diagramPreferencesHint,
+							dashedLineViewDescriptor, null);
+					// dashedLineCmd.setElement(constraint);
+					dashedLineCmd.setElement(null);
+					if (dashedLineCmd.canExecute()) {
+						cc.compose(dashedLineCmd);
+					}
+				}
+			}
+
+		}
+		return new ICommandProxy(cc);
+	}
+
+	/**
+	 * Returns The command to drop the {@link Comment} and the links, if the
+	 * attached elements are on the diagram
+	 *
+	 * @param comment
+	 *            the comment to drop
+	 * @param viewer
+	 *            the viewer
+	 * @param diagramPreferencesHint
+	 *            the diagram preference hint
+	 * @param location
+	 *            the location for the drop
+	 * @param containerView
+	 *            the container view for the drop
+	 * @param commentType
+	 *            the IHintedType for the {@link Comment}
+	 * @param linkForComment
+	 *            the IHintedType for the link which attach the {@link Comment} to the annotated Element
+	 * @return The command to drop the {@link Comment} and the link, if the
+	 *         attached elements are on the diagram
+	 */
+	protected Command getDropCommentCommand(Comment comment, EditPartViewer viewer, PreferencesHint diagramPreferencesHint, Point location, View containerView, IHintedType commentType, IHintedType linkForComment) {
+		/* for further information, see bug 302555 */
+		ViewServiceUtil.forceLoad();
+		CompositeCommand cc = new CompositeCommand("dropComment");
+		int nbAnnotated = comment.getAnnotatedElements().size();
+
+		// 0. Obtain list of the annotatedElement
+		ArrayList<Element> endToConnect = new ArrayList<>(comment.getAnnotatedElements());
+		GraphicalEditPart[] endEditPart = new GraphicalEditPart[nbAnnotated];
+
+		// 1. Look for if each annotated element is on the diagram
+		Iterator<Element> iteratorProp = endToConnect.iterator();
+		int index = 0;
+		while (iteratorProp.hasNext()) {
+			Element currentAnnotatedElement = iteratorProp.next();
+			endEditPart[index] = (GraphicalEditPart) lookForEditPart(currentAnnotatedElement);
+			index += 1;
+		}
+
+		// 2. creation of the node Comment
+		IAdaptable elementAdapter = new EObjectAdapter(comment);
+		ViewDescriptor descriptor = new ViewDescriptor(elementAdapter, Node.class, commentType.getSemanticHint(), ViewUtil.APPEND, true, diagramPreferencesHint);
+		CreateCommand nodeCreationCommand = new CreateCommand(getEditingDomain(), descriptor, (containerView));
+		cc.compose(nodeCreationCommand);
+
+		SetBoundsCommand setBoundsCommand = new SetBoundsCommand(getEditingDomain(), "move", (IAdaptable) nodeCreationCommand.getCommandResult().getReturnValue(), location);
+		cc.compose(setBoundsCommand);
+		// obtain the node figure
+		IAdaptable sourceEventAdapter = (IAdaptable) nodeCreationCommand.getCommandResult().getReturnValue();
+		IAdaptable targetEventAdapter = null;
+		if (nbAnnotated != 0) {
+
+			// used in the creation command of each event
+			ConnectionViewDescriptor dashedLineViewDescriptor = new ConnectionViewDescriptor(linkForComment, linkForComment.getSemanticHint(), diagramPreferencesHint);
+
+			// 3. creation of the dashed line between the Constraint and the
+			// constrained element
+			for (GraphicalEditPart current : endEditPart) {
+				if (current != null) {
+					targetEventAdapter = new SemanticAdapter(null, current.getModel());
+					CommonDeferredCreateConnectionViewCommand dashedLineCmd = new CommonDeferredCreateConnectionViewCommand(getEditingDomain(), linkForComment.getSemanticHint(), (sourceEventAdapter), (targetEventAdapter), viewer, diagramPreferencesHint,
+							dashedLineViewDescriptor, null);
+					// dashedLineCmd.setElement(comment);
+					dashedLineCmd.setElement(null);
+					if (dashedLineCmd.canExecute()) {
+						cc.compose(dashedLineCmd);
+					}
+				}
+			}
+
+		}
+		return new ICommandProxy(cc);
+	}
+
+	protected Point getTranslatedLocation(DropObjectsRequest dropRequest) {
+		Point location = dropRequest.getLocation().getCopy();
+		((GraphicalEditPart) getHost()).getContentPane().translateToRelative(location);
+		((GraphicalEditPart) getHost()).getContentPane().translateFromParent(location);
+		location.translate(((GraphicalEditPart) getHost()).getContentPane().getClientArea().getLocation().getNegated());
+		return location;
+	}
+
+	/**
+	 * <pre>
+	 * Returns the drop command for Affixed nodes (Parameter, Port).
+	 * This method uses PortPositionLocator used by both Port and Parameter.
+	 * If the dropped element is a Port, the graphical parent can be :
+	 * - a Class that owns or inherits the Port
+	 * - a Property which type owns or inherits the Port
+	 * </pre>
+	 *
+	 * @param dropRequest
+	 *            the drop request
+	 * @param droppedElement
+	 *            the element to drop
+	 * @param nodeVISUALID
+	 *            the visual identifier of the EditPart of the dropped element
+	 * @return the drop command
+	 */
+	protected Command dropAffixedNode(DropObjectsRequest dropRequest, Element droppedElement, String nodeVISUALID) {
+		// The dropped element must be a Port or Parameter
+		if (!((droppedElement instanceof Port) || (droppedElement instanceof Parameter))) {
+			// Log.getInstance().error(new Exception("Incorrect parameter type (droppedElement should be a Port or Parameter)"));
+			return UnexecutableCommand.INSTANCE;
+		}
+		// Manage Element drop in compartment
+		Boolean isCompartmentTarget = false; // True if the target is a
+												// ShapeCompartmentEditPart
+		GraphicalEditPart graphicalParentEditPart = (GraphicalEditPart) getHost();
+		// Default drop location
+		Point dropLocation = dropRequest.getLocation().getCopy();
+		// Detect if the drop target is a compartment
+		if (graphicalParentEditPart instanceof ShapeCompartmentEditPart) {
+			isCompartmentTarget = true;
+			// Replace compartment edit part by its parent EditPart
+			graphicalParentEditPart = (GraphicalEditPart) graphicalParentEditPart.getParent();
+			// Translate Port expected location according to the compartment
+			// location
+			Point targetLocation = graphicalParentEditPart.getContentPane().getBounds().getLocation();
+			ShapeCompartmentFigure compartmentFigure = (ShapeCompartmentFigure) getHostFigure();
+			// Retrieve ViewPort location = the area where compartment children
+			// are located
+			// Retrieve ViewPort view location = the relative location of the
+			// viewed compartment
+			// depending on the current scroll bar state
+			Viewport compartmentViewPort = compartmentFigure.getScrollPane().getViewport();
+			Point compartmentViewPortLocation = compartmentViewPort.getLocation();
+			Point compartmentViewPortViewLocation = compartmentViewPort.getViewLocation();
+			// Calculate the delta between the targeted element position for
+			// drop (the Composite figure)
+			// and the View location with eventual scroll bar.
+			Point delta = compartmentViewPortLocation.translate(targetLocation.negate());
+			delta = delta.translate(compartmentViewPortViewLocation.negate());
+			// Translate the requested drop location (relative to parent)
+			dropLocation = dropRequest.getLocation().getTranslated(delta);
+		}
+		// If SideAffixedNodesCreationEditPolicy installed to the parent then delegate calculation of the real drop location to it
+		if (!isSideAffixedNodesCreationPolicyInstalled(graphicalParentEditPart)) {
+			Point parentLoc = graphicalParentEditPart.getFigure().getBounds().getLocation().getCopy();
+			PortPositionLocator locator = new PortPositionLocator(graphicalParentEditPart.getFigure(), PositionConstants.NONE);
+			Rectangle proposedBounds = new Rectangle(dropLocation, new Dimension(20, 20));
+			proposedBounds = proposedBounds.getTranslated(parentLoc);
+			Rectangle preferredBounds = locator.getPreferredLocation(proposedBounds);
+			// Convert the calculated preferred bounds as relative to parent location
+			Rectangle creationBounds = preferredBounds.getTranslated(parentLoc.getNegated());
+			dropLocation = creationBounds.getLocation();
+		}
+		// Manage Element drop in compartment
+		// Create proposed creation bounds and use the locator to find the
+		// expected position
+		EObject graphicalParentObject = graphicalParentEditPart.resolveSemanticElement();
+		if ((graphicalParentObject instanceof EncapsulatedClassifier) && (((EncapsulatedClassifier) graphicalParentObject).getAllAttributes().contains(droppedElement))) {
+			// Drop Port on StructuredClassifier
+			if (isCompartmentTarget) {
+				return getDropAffixedNodeInCompartmentCommand(nodeVISUALID, dropLocation, droppedElement);
+			}
+			return new ICommandProxy(getDefaultDropNodeCommand(nodeVISUALID, dropLocation, droppedElement));
+		} else if (graphicalParentObject instanceof ConnectableElement) {
+			// Drop Port on Part
+			Type type = ((ConnectableElement) graphicalParentObject).getType();
+			if ((type != null) && (type instanceof EncapsulatedClassifier) && (((EncapsulatedClassifier) type).getAllAttributes().contains(droppedElement))) {
+				if (isCompartmentTarget) {
+					return getDropAffixedNodeInCompartmentCommand(nodeVISUALID, dropLocation, droppedElement);
+				}
+				return new ICommandProxy(getDefaultDropNodeCommand(nodeVISUALID, dropLocation, droppedElement));
+			}
+		} else if ((graphicalParentObject instanceof Behavior) && (((Behavior) graphicalParentObject).getOwnedParameters().contains(droppedElement))) {
+			// Drop Parameter on Behavior
+			if (isCompartmentTarget) {
+				return getDropAffixedNodeInCompartmentCommand(nodeVISUALID, dropLocation, droppedElement);
+			}
+			return new ICommandProxy(getDefaultDropNodeCommand(nodeVISUALID, dropLocation, droppedElement));
+		}
+		return UnexecutableCommand.INSTANCE;
+	}
+
+	/**
+	 * <pre>
+	 * This method returns the drop command for AffixedNode (Port, Parameter)
+	 * in case the node is dropped on a ShapeCompartmentEditPart.
+	 * </pre>
+	 *
+	 * @param nodeVISUALID
+	 *            the node visual identifier
+	 * @param location
+	 *            the drop location
+	 * @param droppedObject
+	 *            the object to drop
+	 * @return a CompositeCommand for Drop
+	 */
+	protected CompoundCommand getDropAffixedNodeInCompartmentCommand(String nodeVISUALID, Point location, EObject droppedObject) {
+		CompoundCommand cc = new CompoundCommand("Drop");
+		IAdaptable elementAdapter = new EObjectAdapter(droppedObject);
+		ViewDescriptor descriptor = new ViewDescriptor(elementAdapter, Node.class, ((IHintedType) getUMLElementType(nodeVISUALID)).getSemanticHint(), ViewUtil.APPEND, true, getDiagramPreferencesHint());
+		// Create the command targeting host parent (owner of the
+		// ShapeCompartmentEditPart)
+		CreateViewCommand createCommand = new CreateViewCommand(getEditingDomain(), descriptor, ((View) (getHost().getParent().getModel())));
+		cc.add(new ICommandProxy(createCommand));
+		SetBoundsCommand setBoundsCommand = new SetBoundsCommand(getEditingDomain(), "move", (IAdaptable) createCommand.getCommandResult().getReturnValue(), location);
+		cc.add(new ICommandProxy(setBoundsCommand));
+		return cc;
+	}
+
+	private boolean isSideAffixedNodesCreationPolicyInstalled(IGraphicalEditPart editPart) {
+		EditPolicy policy = editPart.getEditPolicy(EditPolicyRoles.CREATION_ROLE);
+		if (policy == null && false == policy instanceof CustomizableDropEditPolicy) {
+			return false;
+		}
+		EditPolicy defaultCreationPolicy = ((CustomizableDropEditPolicy) policy).getDefaultCreationPolicy();
+		return defaultCreationPolicy != null && defaultCreationPolicy instanceof SideAffixedNodesCreationEditPolicy;
+	}
+
+	/**
+	 * the method provides command to create the binary link into the diagram.
+	 * Find source/target adapter
+	 * If the source and the target views do not exist, these views will be
+	 * created.
+	 *
+	 * @see dropBinaryLink(CompositeCommand cc, Element source, Element target, int linkVISUALID
+	 *      , Point absoluteLocation, Element semanticLink)
+	 *
+	 * @param cc
+	 *            the composite command that will contain the set of command to
+	 *            create the binary link
+	 * @param source
+	 *            source/target link node
+	 * @param point
+	 *            source/target node location
+	 */
+	private IAdaptable findAdapter(CompositeCommand cc, Element source, Point dropLocation) {
+		IAdaptable result = getElement2IAdaptableRegistryHelper().findAdapter(source);
+		if (result != null) {
+			return result;
+		}
+		GraphicalEditPart editPart = (GraphicalEditPart) lookForEditPart(source);
+		if (editPart == null) {
+			ICommand createCommand = getDefaultDropNodeCommand(dropLocation, source);
+			cc.add(createCommand);
+			result = (IAdaptable) createCommand.getCommandResult().getReturnValue();
+			return result;
+		} else {
+			return new SemanticAdapter(null, editPart.getModel());
+		}
+	}
+
+
+
+}