/*******************************************************************************
 * Copyright (c) 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui;

/**
 * An interface that descriptor classes may implement in addition to their
 * descriptor interface. This indicates that they may or may not originate from
 * a plugin contribution. This is useful in various activity filtering
 * scenarios.
 * 
 * <em>EXPERIMENTAL</em>
 * 
 * @since 3.0
 */
public interface IPluginContribution {

	/**
	 * @return the local id of the contribution. Must not be <code>null</code>.
	 *         This should correspond to the extension-specific identifier for
	 *         a given contribution.
	 */
	public String getLocalId();

	/**
	 * @return the id of the originating plugin. Can be <code>null</code> if
	 *         this contribution did not originate from a plugin.
	 */
	public String getPluginId();
}