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/*****************************************************************************
* 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.infra.types.core.registries;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.Platform;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.gmf.runtime.emf.type.core.IHintedType;
import org.eclipse.papyrus.infra.types.ElementTypeConfiguration;
import org.eclipse.papyrus.infra.types.ElementTypesConfigurationsPackage;
import org.eclipse.papyrus.infra.types.core.Activator;
import org.eclipse.papyrus.infra.types.core.extensionpoints.IElementTypeConfigurationKindExtensionPoint;
import org.eclipse.papyrus.infra.types.core.factories.IElementTypeConfigurationFactory;
import org.eclipse.papyrus.infra.types.core.factories.impl.MetamodelTypeFactory;
import org.eclipse.papyrus.infra.types.core.factories.impl.SpecializationTypeFactory;
/**
* Registry that manages all possible elementTypeConfigurationTypes
*/
public class ElementTypeConfigurationTypeRegistry {
private static ElementTypeConfigurationTypeRegistry registry;
protected Map<String, IElementTypeConfigurationFactory<? extends ElementTypeConfiguration>> elementTypeConfigurationTypeToFactory = null;
/**
* returns the singleton instance of this registry
*
* @return the singleton instance of this registry
*/
public static synchronized ElementTypeConfigurationTypeRegistry getInstance() {
if (registry == null) {
registry = new ElementTypeConfigurationTypeRegistry();
registry.init();
}
return registry;
}
/**
* Inits the registry.
*/
protected void init() {
elementTypeConfigurationTypeToFactory = new HashMap<String, IElementTypeConfigurationFactory<? extends ElementTypeConfiguration>>();
IConfigurationElement[] elements = Platform.getExtensionRegistry().getConfigurationElementsFor(IElementTypeConfigurationKindExtensionPoint.EXTENSION_POINT_ID);
for (IConfigurationElement configurationElement : elements) {
String configurationClass = configurationElement.getAttribute(IElementTypeConfigurationKindExtensionPoint.CONFIGURATION_CLASS);
try {
Object factoryClass = configurationElement.createExecutableExtension(IElementTypeConfigurationKindExtensionPoint.FACTORY_CLASS);
if (factoryClass instanceof IElementTypeConfigurationFactory) {
elementTypeConfigurationTypeToFactory.put(configurationClass, (IElementTypeConfigurationFactory<?>) factoryClass);
}
} catch (CoreException e) {
Activator.log.error(e);
}
}
// Register default interpretations
elementTypeConfigurationTypeToFactory.put(ElementTypesConfigurationsPackage.eINSTANCE.getMetamodelTypeConfiguration().getInstanceTypeName(), new MetamodelTypeFactory());
elementTypeConfigurationTypeToFactory.put(ElementTypesConfigurationsPackage.eINSTANCE.getSpecializationTypeConfiguration().getInstanceTypeName(), new SpecializationTypeFactory());
}
protected <T extends ElementTypeConfiguration> IElementTypeConfigurationFactory<T> getFactory(ElementTypeConfiguration elementTypeConfiguration) {
String elementTypeConfigurationType = elementTypeConfiguration.eClass().getInstanceTypeName();
// We assume here that the right factory is registered for the right ElementTypeConfiguration
@SuppressWarnings("unchecked")
IElementTypeConfigurationFactory<T> factory = (IElementTypeConfigurationFactory<T>) elementTypeConfigurationTypeToFactory.get(elementTypeConfigurationType);
return factory;
}
public <T extends ElementTypeConfiguration> IElementType getElementType(T elementTypeConfiguration) {
if (elementTypeConfiguration == null) {
return null;
} else {
IElementTypeConfigurationFactory<T> factory = getFactory(elementTypeConfiguration);
if (factory != null) {
IHintedType elementType = factory.createElementType(elementTypeConfiguration);
return elementType;
}
}
return null;
}
}
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