/*******************************************************************************
* Copyright (c) 2008, 2012 Obeo.
* 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:
* Obeo - initial API and implementation
*******************************************************************************/
package org.eclipse.emf.eef.codegen.core.services;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.Platform;
import org.eclipse.emf.eef.codegen.EEFCodegenPlugin;
import org.eclipse.emf.eef.codegen.core.initializer.AbstractPropertiesInitializer;
/**
* @author <a href="mailto:goulwen.lefur@obeo.fr">Goulwen Le Fur</a>
*/
public class PropertiesInitializerStrategyServices {
/**
* The extension name.
*/
public static final String EXTENSION_NAME = "PropertiesInitializerStrategy"; //$NON-NLS-1$
/**
* The extension's element name.
*/
private static final String EXTENSION_ELEMENT_NAME = "PropertiesInitializerStrategy"; //$NON-NLS-1$
/**
* The element's attribute name.
*/
private static final String EXTENSION_ATTRIBUTE_NAME = "name"; //$NON-NLS-1$
/**
* The element's attribute description.
*/
private static final String EXTENSION_ATTRIBUTE_DESCRIPTION = "description"; //$NON-NLS-1$
/**
* The element's attribute class.
*/
private static final String EXTENSION_ATTRIBUTE_CLASS = "strategyClass"; //$NON-NLS-1$
/**
* The instance of the service
*/
private static PropertiesInitializerStrategyServices instance = new PropertiesInitializerStrategyServices();
/**
* The discovered strategies
*/
private List<AbstractPropertiesInitializer> strategies;
/**
* Default constructor
*/
private PropertiesInitializerStrategyServices() {
configureService();
}
/**
* @return the service instance
*/
public static PropertiesInitializerStrategyServices getInstance() {
return instance;
}
/**
* @return the strategies
*/
public List<AbstractPropertiesInitializer> getStrategies() {
return strategies;
}
/**
* Load all the providers registered by extension point.
*/
private void configureService() {
strategies = new ArrayList<AbstractPropertiesInitializer>();
IExtensionPoint extensionPoint = Platform.getExtensionRegistry().getExtensionPoint(
EEFCodegenPlugin.PLUGIN_ID, EXTENSION_NAME);
IExtension[] extensions = extensionPoint.getExtensions();
for (int extensionIndex = 0; extensionIndex < extensions.length; extensionIndex++) {
IExtension extension = extensions[extensionIndex];
IConfigurationElement[] configurationElements = extension.getConfigurationElements();
for (int i = 0; i < configurationElements.length; i++) {
IConfigurationElement cfg = configurationElements[i];
if (EXTENSION_ELEMENT_NAME.equals(cfg.getName())) {
try {
AbstractPropertiesInitializer initializer = (AbstractPropertiesInitializer)cfg
.createExecutableExtension(EXTENSION_ATTRIBUTE_CLASS);
String nameAttribute = cfg.getAttribute(EXTENSION_ATTRIBUTE_NAME);
if (nameAttribute != null)
initializer.setName(nameAttribute);
String descriptionAttribute = cfg.getAttribute(EXTENSION_ATTRIBUTE_DESCRIPTION);
if (descriptionAttribute != null)
initializer.setDescription(descriptionAttribute);
strategies.add(initializer);
} catch (CoreException e) {
e.printStackTrace();
}
}
}
}
}
}