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/**
* Copyright (c) 2012 Mia-Software.
*
* 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:
* Alban Ménager (Soft-Maint) - Bug 387470 - [EFacet][Custom] Editors
* Grégoire Dupé (Mia-Software) - Bug 387470 - [EFacet][Custom] Editors
*/
package org.eclipse.papyrus.emf.facet.efacet.sdk.ui.internal.query;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.InvalidRegistryObjectException;
import org.eclipse.core.runtime.Platform;
import org.eclipse.papyrus.emf.facet.efacet.sdk.ui.internal.Activator;
import org.eclipse.papyrus.emf.facet.efacet.sdk.ui.internal.exported.IQueryDialogFactoryStrategy;
import org.eclipse.papyrus.emf.facet.util.core.Logger;
import org.eclipse.osgi.util.NLS;
/**
* Implementation of the {@link IQueryWidgetCompositeFactoryFactory}.
*/
public class QueryWidgetCompositeFactoryImpl implements
IQueryWidgetCompositeFactoryFactory {
private static final String EXTENSION_POINT = "org.eclipse.papyrus.emf.facet.efacet.sdk.ui.queryFactoryDialogRegistration"; //$NON-NLS-1$
private static final String DIALOG_FACTORY = "dialogFactory"; //$NON-NLS-1$
private static final String MANAGED_TYPE_NAME = "managedQueryTypeName"; //$NON-NLS-1$
private Map<String, IQueryDialogFactoryStrategy> extensions;
public IQueryDialogFactoryStrategy getQueryDialogFactoryStrategy(
final String managedTypeName) {
// Lazy Loading, we only create the necessary instance.
for (final IConfigurationElement element : Platform
.getExtensionRegistry().getConfigurationElementsFor(
QueryWidgetCompositeFactoryImpl.EXTENSION_POINT)) {
final String elementName = element
.getAttribute(QueryWidgetCompositeFactoryImpl.MANAGED_TYPE_NAME);
if (elementName.equals(managedTypeName)) {
try {
final Object object = element
.createExecutableExtension(QueryWidgetCompositeFactoryImpl.DIALOG_FACTORY);
if (object instanceof IQueryDialogFactoryStrategy) {
final IQueryDialogFactoryStrategy strategy = (IQueryDialogFactoryStrategy) object;
this.extensions.put(elementName, strategy);
} else {
final String errorMsg = NLS
.bind("The attribut {0} must contains a class implementing {1}", //$NON-NLS-1$
QueryWidgetCompositeFactoryImpl.DIALOG_FACTORY,
IQueryDialogFactoryStrategy.class
.getName());
Logger.logError(errorMsg, Activator.getDefault());
}
} catch (final InvalidRegistryObjectException e) {
Logger.logError(e, Activator.getDefault());
} catch (final CoreException e) {
Logger.logError(e, Activator.getDefault());
}
}
}
return this.extensions.get(managedTypeName);
}
public List<String> getRegisteredQueryWidgetsComposite() {
if (this.extensions == null) {
this.extensions = new HashMap<String, IQueryDialogFactoryStrategy>();
for (final IConfigurationElement element : Platform
.getExtensionRegistry().getConfigurationElementsFor(
QueryWidgetCompositeFactoryImpl.EXTENSION_POINT)) {
this.extensions
.put(element
.getAttribute(QueryWidgetCompositeFactoryImpl.MANAGED_TYPE_NAME),
null);
}
}
return new LinkedList<String>(this.extensions.keySet());
}
}
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