/*

* 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:

*

* Wrapper for TraceLocation

*

*/

package com.nokia.tracebuilder.view;

import com.nokia.tracebuilder.engine.TraceLocation;

import com.nokia.tracebuilder.engine.TraceLocationListener;

import com.nokia.tracebuilder.source.SourceLocation;

/**

 * Wrapper for TraceLocation

 * 

 */

final class TraceLocationWrapper extends WrapperBase implements

		TraceLocationListener {

	/**

	 * The trace location

	 */

	private TraceLocation location;

	/**

	 * Filters out notifications where line was not changed

	 */

	private int lastNotifiedLineNumber;

	/**

	 * Constructor

	 * 

	 * @param location

	 *            the trace location

	 * @param parent

	 *            the parent wrapper

	 * @param updater

	 *            the update notifier

	 */

	TraceLocationWrapper(TraceLocation location, WrapperBase parent,

			WrapperUpdater updater) {

		super(parent, updater);

		this.location = location;

		location.getProperties().setViewReference(this);

		location.addLocationListener(this);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.view.WrapperBase#getChildren()

	 */

	@Override

	Object[] getChildren() {

		return new Object[0];

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.view.WrapperBase#hasChildren()

	 */

	@Override

	boolean hasChildren() {

		return false;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.view.WrapperBase#delete()

	 */

	@Override

	void delete() {

		super.delete();

		location.removeLocationListener(this);

		location.getProperties().setViewReference(null);

		location = null;

	}

	/**

	 * Gets the wrapped location

	 * 

	 * @return the location

	 */

	TraceLocation getLocation() {

		return location;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.engine.TraceLocationListener#

	 *      locationValidityChanged(com.nokia.tracebuilder.engine.TraceLocation)

	 */

	public void locationValidityChanged(TraceLocation location) {

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.source.SourceLocationListener#

	 *      locationDeleted(com.nokia.tracebuilder.source.SourceLocation)

	 */

	public void locationDeleted(SourceLocation location) {

		// Processed in location list wrapper when location is removed from

		// location list

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.engine.TraceLocationListener#locationContentChanged()

	 */

	public void locationContentChanged(TraceLocation location) {

		// Name update

		if (isInView()) {

			getUpdater().queueUpdate(this);

		}

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.source.SourceLocationListener#locationChanged()

	 */

	public void locationChanged(SourceLocation location) {

		int line = location.getLineNumber();

		if (line != lastNotifiedLineNumber) {

			lastNotifiedLineNumber = line;

			if (isInView()) {

				getUpdater().queueUpdate(this);

			}

		}

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.lang.Object#toString()

	 */

	@Override

	public String toString() {

		return location.getFileName() + ", " + location.getLineNumber(); //$NON-NLS-1$

	}

}