/*

 * 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:  Definitions for the class AnalyzeFactory

 *

 */

package com.nokia.s60tools.analyzetool.engine;

import java.util.AbstractList;

import java.util.ArrayList;

import com.nokia.s60tools.analyzetool.engine.statistic.ProcessInfo;

import com.nokia.s60tools.analyzetool.internal.engine.MemoryActivityModel;

/**

 * Factory for creating the memory model of AnalyzeTool

 *

 */

public class AnalyzeFactory {

	private static final IMemoryActivityModel EMPTY_MODEL= new EmptyAnalysisGraphModel();

	/**

	 * Creates an instance of IMemoryActivityModel

	 * @param emptyModel if true return a model that cannot take processes

	 * @return the newly created model

	 */

	public IMemoryActivityModel createModel(final boolean emptyModel){

		return emptyModel ? EMPTY_MODEL : new MemoryActivityModel();

	}

	/**

	 * Returns an empty model

	 */

	public static IMemoryActivityModel getEmptyModel(){

		return EMPTY_MODEL;

	}

	private static class EmptyAnalysisGraphModel implements IMemoryActivityModel {

		/* (non-Javadoc)

		 * @see com.nokia.s60tools.analyzetool.engine.IMemoryActivityModel#getFirstMemOpTime()

		 */

		public Long getFirstMemOpTime() {

			return 0L;

		}

		/* (non-Javadoc)

		 * @see com.nokia.s60tools.analyzetool.engine.IMemoryActivityModel#getFirstProcessTime()

		 */

		public Long getFirstProcessTime() {

			return 0L;

		}

		/* (non-Javadoc)

		 * @see com.nokia.s60tools.analyzetool.engine.IMemoryActivityModel#getHighestCumulatedMemoryAlloc()

		 */

		public int getHighestCumulatedMemoryAlloc() {

			return 10*1024;

		}

		/* (non-Javadoc)

		 * @see com.nokia.s60tools.analyzetool.engine.IMemoryActivityModel#getLastMemOpTime()

		 */

		public Long getLastMemOpTime() {

			return 0L;

		}

		/* (non-Javadoc)

		 * @see com.nokia.s60tools.analyzetool.engine.IMemoryActivityModel#getLastProcessTime()

		 */

		public Long getLastProcessTime() {

			return 0L;

		}

		/* (non-Javadoc)

		 * @see com.nokia.s60tools.analyzetool.engine.IMemoryActivityModel#getProcesses()

		 */

		public AbstractList<ProcessInfo> getProcesses() {

			return new ArrayList<ProcessInfo>();

		}

		public void addListener(IMemoryActivityModelChangeListener listener) {

			//immediately call this listener to let it know there is no data

			//there is no need to add this listener

			listener.onProcessesAdded();

		}

		/* (non-Javadoc)

		 * @see com.nokia.s60tools.analyzetool.engine.IMemoryActivityModel#addProcesses(java.util.AbstractList)

		 */

		public void addProcesses(AbstractList<ProcessInfo> processes) {

			// nothing to do

		}

		/* (non-Javadoc)

		 * @see com.nokia.s60tools.analyzetool.engine.IMemoryActivityModel#removeListener(com.nokia.s60tools.analyzetool.engine.IMemoryActivityModelChangeListener)

		 */

		public void removeListener(IMemoryActivityModelChangeListener listener) {

			// nothing to do

		}

		public ProcessInfo getSelectedProcess() {

			return null;

		}

		public void setSelectedProcess(ProcessInfo processInfo) {

			//cannot occur in empty model

		}

	}

}