/*

* 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 one trace group

*

*/

package com.nokia.tracebuilder.view;

import com.nokia.tracebuilder.model.Trace;

import com.nokia.tracebuilder.model.TraceGroup;

/**

 * Wrapper for one trace group

 * 

 * @see com.nokia.tracebuilder.model.TraceGroup

 */

final class TraceGroupWrapper extends TraceObjectWrapper {

	/**

	 * List of traces

	 */

	private TraceListWrapper traceListWrapper;

	/**

	 * Wrapper constructor

	 * 

	 * @param group

	 *            the trace group

	 * @param parent

	 *            parent wrapper

	 * @param updater

	 *            the update notifier

	 */

	public TraceGroupWrapper(TraceGroup group, WrapperBase parent,

			WrapperUpdater updater) {

		super(group, parent, updater);

		traceListWrapper = new TraceListWrapper(group, this, updater);

		if (traceListWrapper.hasChildren()) {

			add(traceListWrapper);

		}

	}

	/**

	 * Adds a trace to this group

	 * 

	 * @param trace

	 *            the trace to be added

	 * @return the wrapper which needs to be refreshed

	 */

	public WrapperBase addTrace(Trace trace) {

		WrapperBase wrapper;

		if (traceListWrapper.hasChildren()) {

			wrapper = traceListWrapper.addTrace(trace);

		} else {

			traceListWrapper.addTrace(trace);

			add(traceListWrapper);

			wrapper = this;

		}

		return wrapper;

	}

	/**

	 * Removes a trace

	 * 

	 * @param trace

	 *            the trace to be removed

	 * @return the wrapper which needs to be refreshed

	 */

	public WrapperBase removeTrace(Trace trace) {

		WrapperBase wrapper = traceListWrapper.removeTrace(trace);

		if (!traceListWrapper.hasChildren()) {

			hide(traceListWrapper);

			wrapper = this;

		}

		return wrapper;

	}

}