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/*
* Copyright (c) 2010, 2012, 2015, 2016 Eike Stepper (Berlin, Germany) 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:
* Martin Fluegge - initial API and implementation
*
*/
package org.eclipse.emf.cdo.dawn.examples.acore.diagram.edit.commands;
import org.eclipse.emf.cdo.dawn.examples.acore.AClass;
import org.eclipse.emf.cdo.dawn.examples.acore.AInterface;
import org.eclipse.emf.cdo.dawn.examples.acore.diagram.edit.policies.AcoreBaseItemSemanticEditPolicy;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.gmf.runtime.emf.type.core.commands.EditElementCommand;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateRelationshipRequest;
/**
* @generated
*/
public class AClassImplementedInterfacesCreateCommand extends EditElementCommand
{
/**
* @generated
*/
private final EObject source;
/**
* @generated
*/
private final EObject target;
/**
* @generated
*/
public AClassImplementedInterfacesCreateCommand(CreateRelationshipRequest request, EObject source, EObject target)
{
super(request.getLabel(), null, request);
this.source = source;
this.target = target;
}
/**
* @generated
*/
@Override
public boolean canExecute()
{
if (source == null && target == null)
{
return false;
}
if (source != null && false == source instanceof AClass)
{
return false;
}
if (target != null && false == target instanceof AInterface)
{
return false;
}
if (getSource() == null)
{
return true; // link creation is in progress; source is not defined yet
}
// target may be null here but it's possible to check constraint
return AcoreBaseItemSemanticEditPolicy.LinkConstraints.canCreateAClassImplementedInterfaces_4002(getSource(), getTarget());
}
/**
* @generated
*/
@Override
protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info) throws ExecutionException
{
if (!canExecute())
{
throw new ExecutionException("Invalid arguments in create link command"); //$NON-NLS-1$
}
if (getSource() != null && getTarget() != null)
{
getSource().getImplementedInterfaces().add(getTarget());
}
return CommandResult.newOKCommandResult();
}
/**
* @generated
*/
@Override
protected void setElementToEdit(EObject element)
{
throw new UnsupportedOperationException();
}
/**
* @generated
*/
protected AClass getSource()
{
return (AClass)source;
}
/**
* @generated
*/
protected AInterface getTarget()
{
return (AInterface)target;
}
}
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