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/*****************************************************************************
* Copyright (c) 2011 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:
* Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
*****************************************************************************/
package org.eclipse.papyrus.views.properties.providers;
import java.util.Collection;
import java.util.TreeMap;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.Platform;
import org.eclipse.papyrus.infra.services.labelprovider.service.ExtensibleLabelProvider;
import org.eclipse.papyrus.infra.services.labelprovider.service.IFilteredLabelProvider;
import org.eclipse.papyrus.views.properties.Activator;
/**
* A class for providing labels for a selected element.
* This label provider dispatchs the calls to the label providers
* registered through an extension point, according to the given selection
*
* @author Camille Letavernier
*
*/
public class SelectionLabelProvider extends ExtensibleLabelProvider {
public static final String EXTENSION_ID = "org.eclipse.papyrus.views.properties.labelprovider"; //$NON-NLS-1$
public static final String LABEL_PROVIDER_PROPERTY = "labelProvider"; //$NON-NLS-1$
public static final String PRIORITY_PROPERTY = "priority"; //$NON-NLS-1$
protected final TreeMap<Integer, Collection<IFilteredLabelProvider>> labelProviders = new TreeMap<Integer, Collection<IFilteredLabelProvider>>();
public SelectionLabelProvider() {
super();
readExtensionPoint();
}
protected void readExtensionPoint() {
IConfigurationElement[] config = Platform.getExtensionRegistry().getConfigurationElementsFor(EXTENSION_ID);
for(IConfigurationElement e : config) {
try {
final IFilteredLabelProvider provider = (IFilteredLabelProvider)e.createExecutableExtension(LABEL_PROVIDER_PROPERTY);
final int priority = Integer.parseInt(e.getAttribute(PRIORITY_PROPERTY));
registerProvider(priority, provider);
} catch (Exception ex) {
Activator.log.error("Cannot load the label provider : " + e.getAttribute(LABEL_PROVIDER_PROPERTY), ex);
}
}
}
}
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