CommentItemSemanticEditPolicyCN.java example

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/*****************************************************************************
 * Copyright (c) 2010 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:
 *  Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - Initial API and implementation
 *
 *****************************************************************************/
package org.eclipse.papyrus.uml.diagram.profile.edit.policies;

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

import org.eclipse.emf.ecore.EAnnotation;
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.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.gmf.runtime.notation.View;
import org.eclipse.papyrus.commands.wrappers.EMFtoGMFCommandWrapper;
import org.eclipse.papyrus.uml.diagram.profile.edit.commands.CommentAnnotatedElementCreateCommand;
import org.eclipse.papyrus.uml.diagram.profile.edit.commands.CommentAnnotatedElementReorientCommand;
import org.eclipse.papyrus.uml.diagram.profile.edit.commands.ConstraintConstrainedElementCreateCommand;
import org.eclipse.papyrus.uml.diagram.profile.edit.commands.ConstraintConstrainedElementReorientCommand;
import org.eclipse.papyrus.uml.diagram.profile.edit.parts.CommentAnnotatedElementEditPart;
import org.eclipse.papyrus.uml.diagram.profile.edit.parts.ConstraintConstrainedElementEditPart;
import org.eclipse.papyrus.uml.diagram.profile.providers.UMLElementTypes;

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

	/**
	 * @generated
	 */
	public CommentItemSemanticEditPolicyCN() {
		super(UMLElementTypes.Comment_1007);
	}




	/**
	 * @generated
	 */
	protected Command getDestroyElementCommand(DestroyElementRequest req) {
		View view = (View)getHost().getModel();
		CompositeTransactionalCommand cmd = new CompositeTransactionalCommand(getEditingDomain(), null);
		cmd.setTransactionNestingEnabled(true);

		EAnnotation annotation = view.getEAnnotation("Shortcut"); //$NON-NLS-1$
		if(annotation == null) {
			// there are indirectly referenced children, need extra commands: false
			addDestroyShortcutsCommand(cmd, view);
			// delete host element
			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)));
		} else {
			cmd.add(new org.eclipse.gmf.runtime.diagram.core.commands.DeleteCommand(getEditingDomain(), view));
		}
		return getGEFWrapper(cmd.reduce());
	}


	/**
	 * @generated
	 */
	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) {
		if(UMLElementTypes.CommentAnnotatedElement_1022 == req.getElementType()) {
			return getGEFWrapper(new CommentAnnotatedElementCreateCommand(req, req.getSource(), req.getTarget()));
		}
		if(UMLElementTypes.ConstraintConstrainedElement_4014 == req.getElementType()) {
			return null;
		}
		return null;
	}

	/**
	 * @generated
	 */
	protected Command getCompleteCreateRelationshipCommand(CreateRelationshipRequest req) {
		if(UMLElementTypes.CommentAnnotatedElement_1022 == req.getElementType()) {
			return getGEFWrapper(new CommentAnnotatedElementCreateCommand(req, req.getSource(), req.getTarget()));
		}
		if(UMLElementTypes.ConstraintConstrainedElement_4014 == req.getElementType()) {
			return getGEFWrapper(new ConstraintConstrainedElementCreateCommand(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
	 */
	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));
		}
		return super.getReorientReferenceRelationshipCommand(req);
	}

}