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This plug-in contains the bulk of the Workbench implementation, and depends on JFace, SWT, and Core Runtime. It cannot be used independently from org.eclipse.ui. Workbench client plug-ins should not depend directly on this plug-in.

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/*******************************************************************************
 * Copyright (c) 2005, 2006 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.ui.services;

import org.eclipse.ui.ISourceProvider;

/**
 * 
 * A service that responds to changes in one or more sources. These sources can
 * be plugged into the service. Sources represent a common event framework for
 * services.
 * 
 * 
 * Clients must not extend or implement.
 * 
 * 
 * @since 3.2
 */
public interface IServiceWithSources extends IDisposable {

	/**
	 * Adds a source provider to this service. A source provider will notify the
	 * service when the source it provides changes. An example of a source might
	 * be an active editor or the current selection. This amounts to a pluggable
	 * state tracker for the service.
	 * 
	 * @param provider
	 *            The provider to add; must not be null.
	 */
	public void addSourceProvider(ISourceProvider provider);

	/**
	 * Removes a source provider from this service. Most of the time, this
	 * method call is not required as source providers typically share the same
	 * life span as the workbench itself.
	 * 
	 * @param provider
	 *            The provider to remove; must not be null.
	 */
	public void removeSourceProvider(ISourceProvider provider);
}