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/*******************************************************************************
* Copyright (c) 2013 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:
* Cedric Dumoulin - cedric.dumoulin@lifl.fr
******************************************************************************/
package org.eclipse.papyrus.layers.runtime.model;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.papyrus.infra.core.resource.AbstractModelWithSharedResource;
import org.eclipse.papyrus.layers.runtime.LayersStackAndApplicationLifeCycleEventNotifier;
import org.eclipse.papyrus.layers.stackmodel.layers.LayersFactory;
import org.eclipse.papyrus.layers.stackmodel.layers.LayersStackApplication;
/**
* This class declare the model used by the layer.
* This model is registered to Papyrus core ModelSet which take care to load the
* corresponding EMF resource.
*
* @author cedric dumoulin
*
*/
public class LayersModel extends AbstractModelWithSharedResource<LayersStackApplication> {
/**
* File extension used for notation.
*/
public static final String MODEL_FILE_EXTENSION = "di"; //$NON-NLS-1$
/**
* Model ID.
*/
public static final String MODEL_ID = "org.eclipse.papyrus.layers.runtime.model.LayersModel"; //$NON-NLS-1$
/**
* Identifier used to retrieve the model from the ModelManager
*
* @see org.eclipse.papyrus.infra.core.resource.AbstractBaseModel#getIdentifier()
*
* @return
*/
@Override
public String getIdentifier() {
return MODEL_ID;
}
/**
* Get the extension used for TraceModel resources
*
* @see org.eclipse.papyrus.infra.core.resource.AbstractBaseModel#getModelFileExtension()
*
* @return
*/
@Override
protected String getModelFileExtension() {
return MODEL_FILE_EXTENSION;
}
/**
* Return true if the provided object is a root of the model, false otherwise.
* This method should be implemented by subclasses.
*
* @param object
* @return
*/
@Override
protected boolean isModelRoot(EObject object) {
return object instanceof LayersStackApplication;
}
/**
* Lookup for the {@link LayersStackApplication} instance
*
* @return the {@link LayersStackApplication} or null if not found.
*/
public LayersStackApplication lookupLayerStackApplication() {
return getModelRoot();
}
/**
* Get the {@link LayersStackApplication} object. Create it if not found.
*
* @return
*/
public LayersStackApplication getLayerStackApplication() {
LayersStackApplication application = getModelRoot();
if (application != null) {
return application;
}
// Not found, create it
application = LayersFactory.eINSTANCE.createLayersStackApplication();
addModelRoot(application);
return application;
}
/**
* Remove the specified application from the model.
*
* @param application
*/
public void removeRoot(LayersStackApplication application) {
getResource().getContents().remove(application);
}
private LayersStackAndApplicationLifeCycleEventNotifier layersStackAndApplicationLifeCycleEventNotifier = null;
/**
* Get the associated {@link LayersStackAndApplicationLifeCycleEventNotifier}.
* There is only one such notifier associated to the model.
*
* @return
*/
public LayersStackAndApplicationLifeCycleEventNotifier getLayersStackLifeCycleEventNotifier() {
// TODO Use an adapter to share a single instance in the model itself.
if (layersStackAndApplicationLifeCycleEventNotifier == null) {
// Create it
layersStackAndApplicationLifeCycleEventNotifier = new LayersStackAndApplicationLifeCycleEventNotifier(this);
}
return layersStackAndApplicationLifeCycleEventNotifier;
}
}
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