path: root/plugins/uml/diagram/org.eclipse.papyrus.uml.diagram.statemachine/src/org/eclipse/papyrus/uml/diagram/statemachine/edit/policies/TransitionItemSemanticEditPolicy.java

/**
 * Copyright (c) 2014 CEA LIST.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *  CEA LIST - Initial API and implementation
 */
package org.eclipse.papyrus.uml.diagram.statemachine.edit.policies;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.edit.command.DeleteCommand;
import org.eclipse.gef.commands.Command;
import org.eclipse.gmf.runtime.emf.commands.core.command.CompositeTransactionalCommand;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateRelationshipRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyElementRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientReferenceRelationshipRequest;
import org.eclipse.papyrus.commands.wrappers.EMFtoGMFCommandWrapper;
import org.eclipse.papyrus.infra.extendedtypes.types.IExtendedHintedElementType;
import org.eclipse.papyrus.infra.extendedtypes.util.ElementTypeUtils;
import org.eclipse.papyrus.uml.diagram.statemachine.edit.commands.CommentAnnotatedElementCreateCommand;
import org.eclipse.papyrus.uml.diagram.statemachine.edit.commands.CommentAnnotatedElementReorientCommand;
import org.eclipse.papyrus.uml.diagram.statemachine.edit.commands.ConstraintConstrainedElementCreateCommand;
import org.eclipse.papyrus.uml.diagram.statemachine.edit.commands.ConstraintConstrainedElementReorientCommand;
import org.eclipse.papyrus.uml.diagram.statemachine.edit.commands.ContextLinkCreateCommand;
import org.eclipse.papyrus.uml.diagram.statemachine.edit.commands.ContextLinkReorientCommand;
import org.eclipse.papyrus.uml.diagram.statemachine.edit.parts.CommentAnnotatedElementEditPart;
import org.eclipse.papyrus.uml.diagram.statemachine.edit.parts.ConstraintConstrainedElementEditPart;
import org.eclipse.papyrus.uml.diagram.statemachine.edit.parts.ContextLinkEditPart;
import org.eclipse.papyrus.uml.diagram.statemachine.providers.UMLElementTypes;

/**
 * @generated
 */
public class TransitionItemSemanticEditPolicy extends UMLBaseItemSemanticEditPolicy {

	/**
	 * @generated
	 */
	public TransitionItemSemanticEditPolicy() {
		super(UMLElementTypes.Transition_7000);
	}

	/**
	 * @generated
	 */
	@Override
	protected Command getDestroyElementCommand(DestroyElementRequest req) {
		CompositeTransactionalCommand cmd = new CompositeTransactionalCommand(getEditingDomain(), null);
		cmd.setTransactionNestingEnabled(true);
		List<EObject> todestroy = new ArrayList<EObject>();
		todestroy.add(req.getElementToDestroy());
		//cmd.add(new org.eclipse.gmf.runtime.emf.type.core.commands.DestroyElementCommand(req));
		cmd.add(new EMFtoGMFCommandWrapper(new DeleteCommand(getEditingDomain(), todestroy)));
		return getGEFWrapper(cmd.reduce());
		//return getGEFWrapper(new org.eclipse.gmf.runtime.emf.type.core.commands.DestroyElementCommand(req));
	}

	/**
	 * @generated
	 */
	@Override
	protected Command getCreateRelationshipCommand(CreateRelationshipRequest req) {
		Command command = req.getTarget() == null ?
				getStartCreateRelationshipCommand(req) : getCompleteCreateRelationshipCommand(req);
		return command != null ? command : super.getCreateRelationshipCommand(req);
	}

	/**
	 * @generated
	 */
	protected Command getStartCreateRelationshipCommand(CreateRelationshipRequest req) {
		IElementType requestElementType = req.getElementType();
		if (requestElementType == null) {
			return null;
		}
		IElementType baseElementType = requestElementType;
		if (requestElementType instanceof IExtendedHintedElementType) {
			baseElementType = ElementTypeUtils.getClosestDiagramType(requestElementType);
			if (baseElementType != null) {
			} else {
				// no reference element type ID. using the closest super element type to give more opportunities, but can lead to bugs.
				baseElementType = ElementTypeUtils.findClosestNonExtendedElementType((IExtendedHintedElementType) requestElementType);
			}
		}
		if (UMLElementTypes.CommentAnnotatedElement_667 == baseElementType) {
			return null;
		}
		if (UMLElementTypes.ConstraintConstrainedElement_670 == baseElementType) {
			return null;
		}
		if (UMLElementTypes.ConstraintContext_8500 == baseElementType) {
			return null;
		}
		return null;
	}

	/**
	 * @generated
	 */
	protected Command getCompleteCreateRelationshipCommand(CreateRelationshipRequest req) {
		IElementType requestElementType = req.getElementType();
		if (requestElementType == null) {
			return null;
		}
		IElementType baseElementType = requestElementType;
		boolean isExtendedType = false;
		if (requestElementType instanceof IExtendedHintedElementType) {
			baseElementType = ElementTypeUtils.getClosestDiagramType(requestElementType);
			if (baseElementType != null) {
				isExtendedType = true;
			} else {
				// no reference element type ID. using the closest super element type to give more opportunities, but can lead to bugs.
				baseElementType = ElementTypeUtils.findClosestNonExtendedElementType((IExtendedHintedElementType) requestElementType);
				isExtendedType = true;
			}
		}
		if (UMLElementTypes.CommentAnnotatedElement_667 == baseElementType) {
			if (isExtendedType) {
				return getExtendedCompleteCreateRelationshipCommand(req, (IExtendedHintedElementType) requestElementType);
			}
			return getGEFWrapper(new CommentAnnotatedElementCreateCommand(req,
					req.getSource(), req.getTarget()));
		}
		if (UMLElementTypes.ConstraintConstrainedElement_670 == baseElementType) {
			if (isExtendedType) {
				return getExtendedCompleteCreateRelationshipCommand(req, (IExtendedHintedElementType) requestElementType);
			}
			return getGEFWrapper(new ConstraintConstrainedElementCreateCommand(req,
					req.getSource(), req.getTarget()));
		}
		if (UMLElementTypes.ConstraintContext_8500 == baseElementType) {
			if (isExtendedType) {
				return getExtendedCompleteCreateRelationshipCommand(req, (IExtendedHintedElementType) requestElementType);
			}
			return getGEFWrapper(new ContextLinkCreateCommand(req,
					req.getSource(), req.getTarget()));
		}
		return null;
	}

	/**
	 * Returns command to reorient EReference based link. New link target or source
	 * should be the domain model element associated with this node.
	 *
	 * @generated
	 */
	@Override
	protected Command getReorientReferenceRelationshipCommand(ReorientReferenceRelationshipRequest req) {
		switch (getVisualID(req)) {
		case CommentAnnotatedElementEditPart.VISUAL_ID:
			return getGEFWrapper(new CommentAnnotatedElementReorientCommand(req));
		case ConstraintConstrainedElementEditPart.VISUAL_ID:
			return getGEFWrapper(new ConstraintConstrainedElementReorientCommand(req));
		case ContextLinkEditPart.VISUAL_ID:
			return getGEFWrapper(new ContextLinkReorientCommand(req));
		}
		return super.getReorientReferenceRelationshipCommand(req);
	}
}