AbstractExtension.java

/*******************************************************************************
 * Copyright (c) 2004, 2006
 * Thomas Hallgren, Kenneth Olwing, Mitch Sonies
 * Pontus Rydin, Nils Unden, Peer Torngren
 * The code, documentation and other materials contained herein have been
 * licensed under the Eclipse Public License - v 1.0 by the individual
 * copyright holders listed above, as Initial Contributors under such license.
 * The text of such license is available at www.eclipse.org.
 *******************************************************************************/

package org.eclipse.buckminster.core.helpers;

import java.util.Map;

import org.eclipse.buckminster.core.IBuckminsterExtension;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExecutableExtension;

/**
 * @author Thomas Hallgren
 */
public abstract class AbstractExtension implements IBuckminsterExtension, IExecutableExtension {
	@SuppressWarnings("unchecked")
	private static Map<String, String> getInitializationParameters(Object data) {
		return (data instanceof Map<?, ?>) ? (Map<String, String>) data : null;
	}

	private String id;

	/**
	 * Returns the id as it was defined in the extension
	 */
	@Override
	public String getId() {
		return id;
	}

	/**
	 * Assing a parameter that originates from the extension definition.
	 * Subclasses must override this method if they want to receive parameters.
	 * 
	 * @param key
	 *            The name of the parameter
	 * @param value
	 *            The parameter value
	 */
	public void setExtensionParameter(String key, String value) throws CoreException {
	}

	@Override
	public void setInitializationData(IConfigurationElement config, String propertyName, Object data) throws CoreException {
		id = config.getAttribute("id"); //$NON-NLS-1$
		Map<String, String> initParams = getInitializationParameters(data);
		if (initParams != null) {
			for (Map.Entry<String, String> entry : initParams.entrySet())
				setExtensionParameter(entry.getKey(), entry.getValue());
		}
	}
}