1 files changed, 267 insertions, 0 deletions
diff --git a/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.activity/custom-src/org/eclipse/papyrus/uml/diagram/activity/dnd/commands/CreateTAndUpdateCommand.java b/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.activity/custom-src/org/eclipse/papyrus/uml/diagram/activity/dnd/commands/CreateTAndUpdateCommand.java
new file mode 100644
index 00000000000..55113aa318b
--- /dev/null
+++ b/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.activity/custom-src/org/eclipse/papyrus/uml/diagram/activity/dnd/commands/CreateTAndUpdateCommand.java
@@ -0,0 +1,267 @@
+/*****************************************************************************
+ * Copyright (c) 2015 CEA LIST.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-2.0/
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * Contributors:
+ *  Francois Le Fevre (CEA LIST) francois.le-fevre@cea.fr - Initial API and implementation
+ *  Pauline DEVILLE (CEA LIST) pauline.deville@cea.fr - Bug 546413
+ *****************************************************************************/
+package org.eclipse.papyrus.uml.diagram.activity.dnd.commands;
+
+import java.util.Iterator;
+import java.util.List;
+
+import org.eclipse.core.commands.ExecutionException;
+import org.eclipse.core.runtime.IAdaptable;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.NullProgressMonitor;
+import org.eclipse.draw2d.geometry.Point;
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.emf.ecore.EStructuralFeature;
+import org.eclipse.emf.transaction.TransactionalEditingDomain;
+import org.eclipse.gef.EditPart;
+import org.eclipse.gef.commands.Command;
+import org.eclipse.gmf.runtime.common.core.command.AbstractCommand;
+import org.eclipse.gmf.runtime.common.core.command.CommandResult;
+import org.eclipse.gmf.runtime.common.core.command.ICommand;
+import org.eclipse.gmf.runtime.diagram.core.edithelpers.CreateElementRequestAdapter;
+import org.eclipse.gmf.runtime.diagram.ui.editparts.CompartmentEditPart;
+import org.eclipse.gmf.runtime.diagram.ui.editparts.IGraphicalEditPart;
+import org.eclipse.gmf.runtime.diagram.ui.requests.CreateViewRequest;
+import org.eclipse.gmf.runtime.diagram.ui.requests.CreateViewRequest.ViewDescriptor;
+import org.eclipse.gmf.runtime.emf.core.util.EObjectAdapter;
+import org.eclipse.gmf.runtime.emf.type.core.IHintedType;
+import org.eclipse.gmf.runtime.emf.type.core.requests.CreateElementRequest;
+import org.eclipse.gmf.runtime.emf.type.core.requests.SetRequest;
+import org.eclipse.gmf.runtime.notation.Node;
+import org.eclipse.papyrus.infra.emf.utils.EMFHelper;
+import org.eclipse.papyrus.infra.services.edit.service.ElementEditServiceUtils;
+import org.eclipse.papyrus.infra.services.edit.service.IElementEditService;
+import org.eclipse.papyrus.uml.diagram.activity.edit.parts.ActivityActivityContentCompartmentEditPart;
+
+/**
+ * A class creating a new element of type T
+ * when drop an element of type S in an element of type E.
+ * This class also update the newly created element to set
+ * one of its feature with the dropped element.
+ * 
+ * @since 3.5.0
+ */
+public class CreateTAndUpdateCommand<T extends EObject, E extends EObject, S extends EObject> extends AbstractCommand {
+
+	protected final EditPart targetEditPart;
+	protected final boolean headless;
+	protected final Class<T> typeParameterClass;
+	protected final E targetElement;
+	protected final S sourceElement;
+	private final IHintedType typeToCreate;
+	private final Point location;
+	private String dropEditPartVisualID;
+	private EStructuralFeature structuralFeatureToSet;
+
+	public CreateTAndUpdateCommand(EditPart targetEditPart, Class<T> typeParameterClass, E targetElement, S sourceElement, boolean headless, IHintedType typeToCreate, EStructuralFeature structuralFeatureToSet, Point location,
+			String dropEditPartVisualID) {
+		super("Create and update in drop action"); //$NON-NLS-1$
+
+		this.targetEditPart = targetEditPart;
+		this.headless = headless;
+		this.typeParameterClass = typeParameterClass;
+
+		this.targetElement = targetElement;
+		this.sourceElement = sourceElement;
+		this.typeToCreate = typeToCreate;
+		this.location = location;
+		this.dropEditPartVisualID = dropEditPartVisualID;
+		this.structuralFeatureToSet = structuralFeatureToSet;
+	}
+
+	@SuppressWarnings("unchecked")
+	protected T getNewEObject(CreateElementRequest request) {
+		if (typeParameterClass.isAssignableFrom(request.getNewElement().getClass())) {
+			return (T) request.getNewElement();
+		}
+		return null;
+	}
+
+	/**
+	 * Retrieves the new object from a CommandResult
+	 *
+	 * @param commandResult
+	 * @return
+	 */
+	@SuppressWarnings("unchecked")
+	public T getNewEObject(CommandResult commandResult) {
+		Object objectResult = commandResult.getReturnValue();
+		if (objectResult instanceof List) {
+			// Result of the semantic + graphical creation command
+			List<?> listResult = (List<?>) objectResult;
+			for (Object elementResult : listResult) {
+				if (elementResult instanceof CreateElementRequestAdapter) {
+					CreateElementRequest request = (CreateElementRequest) ((CreateElementRequestAdapter) elementResult).getAdapter(CreateElementRequest.class);
+					if (request != null) {
+						EObject newElement = request.getNewElement();
+						if (typeParameterClass.isAssignableFrom(newElement.getClass())) {
+							T newObject = (T) newElement;
+							return newObject;
+						}
+					}
+				}
+			}
+		} else if (typeParameterClass.isAssignableFrom(commandResult.getReturnValue().getClass())) {
+			// Result of the semantic creation command
+			return (T) commandResult.getReturnValue();
+		}
+
+		return null;
+	}
+
+
+	/**
+	 * @see org.eclipse.gmf.runtime.common.core.command.AbstractCommand#doExecuteWithResult(org.eclipse.core.runtime.IProgressMonitor, org.eclipse.core.runtime.IAdaptable)
+	 *
+	 * @param progressMonitor
+	 * @param info
+	 * @return
+	 * @throws ExecutionException
+	 */
+	@Override
+	protected CommandResult doExecuteWithResult(IProgressMonitor progressMonitor, IAdaptable info) throws ExecutionException {
+		// Creates the slot
+		TransactionalEditingDomain domain = (TransactionalEditingDomain) EMFHelper.resolveEditingDomain(targetEditPart);
+		CreateElementRequest createElementRequest = new CreateElementRequest(domain, targetElement, typeToCreate);
+		ICommand creationElementCommand = null;
+
+		// creationElementCommand = new CreateElementCommand(createElementRequest);
+		IElementEditService provider = ElementEditServiceUtils.getCommandProvider(targetElement);
+		if (provider != null) {
+			creationElementCommand = provider.getEditCommand(createElementRequest);
+		}
+		if (creationElementCommand != null) {
+			creationElementCommand.execute(new NullProgressMonitor(), null);
+
+			CommandResult commandResult = creationElementCommand.getCommandResult();
+			if (commandResult != null) {
+				if (!commandResult.getStatus().isOK()) {
+					return commandResult;
+				}
+			}
+
+			// Retrieve the created slot, and update its properties
+			T newCreatedElement = getNewEObject(commandResult);
+			if (newCreatedElement == null) {
+				newCreatedElement = getNewEObject(createElementRequest);
+			}
+
+			if (newCreatedElement != null) {
+				updateNewlyCreatedEObjectWithEObjectDragged(newCreatedElement, sourceElement);
+			} else {
+				return CommandResult.newErrorCommandResult("Could not create the action"); //$NON-NLS-1$
+			}
+
+			// Create the element graphically if possible
+			final EditPart ownerEditPart = getOwnerEditPart();
+			dropCreatedElement(ownerEditPart, newCreatedElement);
+		}
+		return CommandResult.newOKCommandResult();
+	}
+
+	/**
+	 * @param contentCompartmentEditPart
+	 * @param createdElement
+	 */
+	protected void dropCreatedElement(EditPart contentCompartmentEditPart, T createdElement) {
+		// If the content compartment edit part of the activity is visible, add the created Action
+		if (null != contentCompartmentEditPart) {
+			// Create the view request, its associated command and execute it
+			final ViewDescriptor descriptor = new ViewDescriptor(new EObjectAdapter(createdElement), Node.class, dropEditPartVisualID, ((IGraphicalEditPart) targetEditPart).getDiagramPreferencesHint());
+			final CreateViewRequest createViewRequest = new CreateViewRequest(descriptor);
+			createViewRequest.setLocation(location);
+			final Command createViewCommand = contentCompartmentEditPart.getCommand(createViewRequest);
+			if (null != createViewCommand && createViewCommand.canExecute()) {
+				createViewCommand.execute();
+			}
+		}
+	}
+
+	/**
+	 *
+	 */
+	protected EditPart getOwnerEditPart() {
+		// Get the compartment edit part
+		CompartmentEditPart compartmentEditPart = null;
+		if (targetEditPart instanceof ActivityActivityContentCompartmentEditPart) {
+			compartmentEditPart = (ActivityActivityContentCompartmentEditPart) targetEditPart;
+		} else {
+			Iterator<?> children = targetEditPart.getChildren().iterator();
+			while (children.hasNext() && null == compartmentEditPart) {
+				Object child = children.next();
+				if (child instanceof ActivityActivityContentCompartmentEditPart) {
+					compartmentEditPart = (ActivityActivityContentCompartmentEditPart) child;
+				}
+			}
+		}
+		return compartmentEditPart;
+	}
+
+	/**
+	 * Sets the slot's property (definingFeature) and initialize its value (property#defaultValue)
+	 *
+	 * @param elementToSet
+	 * @param value
+	 * @throws ExecutionException
+	 */
+	protected void updateNewlyCreatedEObjectWithEObjectDragged(T elementToSet, S value) throws ExecutionException {
+		setElementFeature(elementToSet, structuralFeatureToSet, value);
+	}
+
+	/**
+	 * Sets the feature of the elementToSet to the value
+	 *
+	 * @param elementToSet
+	 * @param structuralFeature
+	 * @param value
+	 * @throws ExecutionException
+	 */
+	protected void setElementFeature(EObject elementToSet, EStructuralFeature structuralFeature, Object value) throws ExecutionException {
+		SetRequest setFeatureRequest = new SetRequest(elementToSet, structuralFeature, value);
+		IElementEditService provider = ElementEditServiceUtils.getCommandProvider(elementToSet);
+		if (provider != null) {
+			ICommand setCommand = provider.getEditCommand(setFeatureRequest);
+			if (setCommand != null && setCommand.canExecute()) {
+				setCommand.execute(new NullProgressMonitor(), null);
+			}
+		}
+	}
+
+	/**
+	 * @see org.eclipse.gmf.runtime.common.core.command.AbstractCommand#doRedoWithResult(org.eclipse.core.runtime.IProgressMonitor, org.eclipse.core.runtime.IAdaptable)
+	 *
+	 * @param progressMonitor
+	 * @param info
+	 * @return
+	 * @throws ExecutionException
+	 */
+	@Override
+	protected CommandResult doRedoWithResult(IProgressMonitor progressMonitor, IAdaptable info) throws ExecutionException {
+		throw new ExecutionException("not implemented"); //$NON-NLS-1$
+	}
+
+	/**
+	 * @see org.eclipse.gmf.runtime.common.core.command.AbstractCommand#doUndoWithResult(org.eclipse.core.runtime.IProgressMonitor, org.eclipse.core.runtime.IAdaptable)
+	 *
+	 * @param progressMonitor
+	 * @param info
+	 * @return
+	 * @throws ExecutionException
+	 */
+	@Override
+	protected CommandResult doUndoWithResult(IProgressMonitor progressMonitor, IAdaptable info) throws ExecutionException {
+		throw new ExecutionException("not implemented"); //$NON-NLS-1$
+	}
+
+}