/*

* 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 TraceLocationList

*

*/

package com.nokia.tracebuilder.view;

import java.util.Iterator;

import com.nokia.tracebuilder.engine.LocationProperties;

import com.nokia.tracebuilder.engine.TraceLocation;

import com.nokia.tracebuilder.engine.TraceLocationList;

import com.nokia.tracebuilder.engine.TraceLocationListListener;

/**

 * Wrapper for TraceLocationList

 * 

 */

final class TraceLocationListWrapper extends ListWrapper implements

		TraceLocationListListener {

	/**

	 * Location list

	 */

	private TraceLocationList locationList;

	/**

	 * Constructor

	 * 

	 * @param list

	 *            the location list

	 * @param parent

	 *            the parent wrapper

	 * @param updater

	 *            the update notifier

	 */

	TraceLocationListWrapper(TraceLocationList list, WrapperBase parent,

			WrapperUpdater updater) {

		super(parent, updater);

		this.locationList = list;

		createChildren();

		locationList.addLocationListListener(this);

	}

	/**

	 * Creates the location wrappers

	 */

	private void createChildren() {

		for (LocationProperties loc : locationList) {

			TraceLocationWrapper wrapper = new TraceLocationWrapper(

					(TraceLocation) loc, this, getUpdater());

			add(wrapper);

		}

	}

	/**

	 * Gets the location list

	 * 

	 * @return the location list

	 */

	TraceLocationList getLocationList() {

		return locationList;

	}

	/**

	 * Updates the location list

	 * 

	 * @param list

	 *            the new location list

	 */

	void updateLocationList(TraceLocationList list) {

		if (locationList != null) {

			locationList.removeLocationListListener(this);

		}

		clear();

		locationList = list;

		if (locationList != null) {

			locationList.addLocationListListener(this);

			createChildren();

		}

	}

	/*

	 * (non-Javadoc)

	 * 

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

	 */

	@Override

	void delete() {

		super.delete();

		if (locationList != null) {

			locationList.removeLocationListListener(this);

		}

	}

	/*

	 * (non-Javadoc)

	 * 

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

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

	 */

	public void locationAdded(TraceLocation location) {

		TraceLocationWrapper wrapper = new TraceLocationWrapper(location, this,

				getUpdater());

		boolean inView = false;

		boolean hidden = false;

		if (!hasChildren()) {

			hidden = true;

		}

		// If one of the existing locations is shown in view, or there are no

		// existing locations the new one is also marked as shown in view

		if (isInView()) {

			if (hasChildren()) {

				Iterator<WrapperBase> itr = getVisibleWrappers();

				if (itr.next().isInView()) {

					inView = true;

				}

			} else {

				inView = true;

			}

		}

		add(wrapper);

		wrapper.setInView(inView);

		if (hidden) {

			WrapperBase parent = getParent();

			if (parent instanceof TraceWrapper) {

				((TraceWrapper) parent).showLocationList();

				getUpdater().queueUpdate(parent);

			} else if (parent instanceof TraceLocationListsWrapper) {

				WrapperBase update = ((TraceLocationListsWrapper) parent)

						.showLocationList(this);

				getUpdater().queueUpdate(update);

			}

		} else {

			getUpdater().queueUpdate(this);

		}

	}

	/*

	 * (non-Javadoc)

	 * 

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

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

	 */

	public void locationRemoved(TraceLocation location) {

		TraceLocationWrapper wrapper = (TraceLocationWrapper) location

				.getProperties().getViewReference();

		remove(wrapper);

		// Forces a full validity check

		if (!hasChildren()) {

			WrapperBase parent = getParent();

			if (parent instanceof TraceWrapper) {

				((TraceWrapper) parent).hideLocationList();

				getUpdater().queueUpdate(parent);

			} else if (parent instanceof TraceLocationListsWrapper) {

				WrapperBase update = ((TraceLocationListsWrapper) parent)

						.hideLocationList(this);

				getUpdater().queueUpdate(update);

			}

		} else {

			getUpdater().queueUpdate(this);

		}

	}

}