/**
* Copyright (c) 2012-2016 Marsha Chechik, Alessio Di Sandro, Michalis Famelis,
* Rick Salay.
* 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:
* Alessio Di Sandro - Implementation.
*/
package edu.toronto.cs.se.mmint.mid.relationship.diagram.edit.commands;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateElementRequest;
import edu.toronto.cs.se.mmint.MMINT;
import edu.toronto.cs.se.mmint.MMINTException;
import edu.toronto.cs.se.mmint.MIDTypeHierarchy;
import edu.toronto.cs.se.mmint.mid.MID;
import edu.toronto.cs.se.mmint.mid.relationship.Mapping;
import edu.toronto.cs.se.mmint.mid.relationship.MappingReference;
import edu.toronto.cs.se.mmint.mid.relationship.ModelRel;
import edu.toronto.cs.se.mmint.mid.ui.MIDDialogs;
import edu.toronto.cs.se.mmint.mid.ui.MIDDialogCancellation;
/**
* The command to create a link.
*
* @author Alessio Di Sandro
*
*/
public class MappingReferenceNewNaryMappingCommand extends MappingReferenceCreateCommand {
/**
* Constructor: initialises the superclass.
*
* @param req
* The request.
*/
public MappingReferenceNewNaryMappingCommand(CreateElementRequest req) {
super(req);
}
/**
* Overrides superclass to re-initialize diagram type hierarchy.
*/
@Override
protected IStatus doUndo(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
IStatus status = super.doUndo(monitor, info);
MID mid = ((ModelRel) getElementToEdit()).getMIDContainer();
if (mid.isTypesLevel()) {
MMINT.createTypeHierarchy(mid);
}
return status;
}
/**
* Overrides superclass to re-initialize diagram type hierarchy.
*/
@Override
protected IStatus doRedo(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
IStatus status = super.doRedo(monitor, info);
MID mid = ((ModelRel) getElementToEdit()).getMIDContainer();
if (mid.isTypesLevel()) {
MMINT.createTypeHierarchy(mid);
}
return status;
}
/**
* Checks if a link can be created.
*
* @return True if a link can be created, false otherwise.
*/
@Override
public boolean canExecute() {
ModelRel modelRel = (ModelRel) getElementToEdit();
return super.canExecute() && (
modelRel.isInstancesLevel() ||
(modelRel.isTypesLevel() && !MIDTypeHierarchy.isRootType((ModelRel) getElementToEdit()))
);
}
protected MappingReference doExecuteTypesLevel() throws MMINTException, MIDDialogCancellation {
ModelRel modelRelType = (ModelRel) getElementToEdit();
MappingReference mappingTypeRef = MIDDialogs.selectMappingTypeReferenceToExtend(modelRelType, null, null);
Mapping mappingType = mappingTypeRef.getObject();
if (MIDTypeHierarchy.getRootTypeUri(mappingType).equals(mappingType.getUri())) {
mappingTypeRef = null; // the link reference to the root is never shown
}
String newMappingTypeName = MIDDialogs.getStringInput("Create new light mapping type", "Insert new mapping type name", null);
MappingReference newMappingTypeRef = mappingType.createSubtypeAndReference(mappingTypeRef, newMappingTypeName, false, modelRelType);
MMINT.createTypeHierarchy(modelRelType.getMIDContainer());
return newMappingTypeRef;
}
protected MappingReference doExecuteInstancesLevel() throws MMINTException, MIDDialogCancellation {
ModelRel modelRel = (ModelRel) getElementToEdit();
MappingReference mappingTypeRef = MIDDialogs.selectMappingTypeReferenceToCreate(modelRel, null, null);
MappingReference newMappingRef = mappingTypeRef.getObject().createInstanceAndReference(false, modelRel);
return newMappingRef;
}
/**
* Creates a new link.
*
* @param monitor
* The progress monitor.
* @param info
* Additional parameter, not used.
* @return The ok result.
* @throws ExecutionException
* If configuration command execution goes wrong.
*/
@Override
protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
try {
MappingReference newElement;
switch (((ModelRel) getElementToEdit()).getLevel()) {
case TYPES:
newElement = this.doExecuteTypesLevel();
break;
case INSTANCES:
newElement = this.doExecuteInstancesLevel();
break;
case WORKFLOWS:
throw new MMINTException("The WORKFLOWS level is not allowed");
default:
throw new MMINTException("The MID level is missing");
}
doConfigure(newElement, monitor, info);
((CreateElementRequest) getRequest()).setNewElement(newElement);
return CommandResult.newOKCommandResult(newElement);
}
catch (ExecutionException ee) {
throw ee;
}
catch (MIDDialogCancellation e) {
return CommandResult.newCancelledCommandResult();
}
catch (MMINTException e) {
MMINTException.print(IStatus.ERROR, "No link created", e);
return CommandResult.newErrorCommandResult("No link created");
}
}
}