/*

* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

* Trace model extension listener implementation for SourceEngine

*

*/

package com.nokia.tracebuilder.engine.source;

import com.nokia.tracebuilder.model.TraceModel;

import com.nokia.tracebuilder.model.TraceModelExtension;

import com.nokia.tracebuilder.model.TraceModelExtensionListener;

import com.nokia.tracebuilder.model.TraceObject;

/**

 * Trace model extension listener implementation for SourceEngine

 * 

 */

final class SourceEngineModelExtensionListener implements

		TraceModelExtensionListener {

	/**

	 * Source engine

	 */

	private final SourceEngine sourceEngine;

	/**

	 * Constructor

	 * 

	 * @param engine

	 *            the source engine

	 */

	SourceEngineModelExtensionListener(SourceEngine engine) {

		sourceEngine = engine;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.model.TraceModelListener#

	 *      extensionAdded(com.nokia.tracebuilder.model.TraceObject,

	 *      com.nokia.tracebuilder.model.TraceModelExtension)

	 */

	public void extensionAdded(TraceObject object, TraceModelExtension extension) {

		// Parser rules that are added to model are taken into use

		if (object instanceof TraceModel

				&& extension instanceof SourceParserRule) {

			sourceEngine.parserAdded((SourceParserRule) extension);

		} else if (extension instanceof TraceFormattingRule) {

			sourceEngine.ruleUpdated(object);

		} else if (extension instanceof TraceParameterFormattingRule) {

			sourceEngine.ruleUpdated(object);

		}

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.model.TraceModelListener#

	 *      extensionRemoved(com.nokia.tracebuilder.model.TraceObject,

	 *      com.nokia.tracebuilder.model.TraceModelExtension)

	 */

	public void extensionRemoved(TraceObject object,

			TraceModelExtension extension) {

		// Parser rules that are removed from model are removed from sources

		if (object instanceof TraceModel

				&& extension instanceof SourceParserRule) {

			sourceEngine.parserRemoved((SourceParserRule) extension);

		} else if (extension instanceof TraceFormattingRule) {

			// When changing formatting, the existing formatting rule will

			// be removed and a new one added. When formatting rule is

			// removed, the trace must not be updated since it would

			// disappear from the source

		} else if (extension instanceof TraceParameterFormattingRule) {

			sourceEngine.ruleUpdated(object);

		}

	}

}