// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "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:

//

// WARNING: This file contains some APIs which are internal and are subject

//          to change without notice. Such APIs should therefore not be used

//          outside the Kernel and Hardware Services package.

//

/**

 @file

 @internalTechnology

*/

#ifndef __SCMCONFIG_H_INCLUDED__

#define __SCMCONFIG_H_INCLUDED__

#include <e32def.h>

#include <scmbytestreamutil.h>

#include <scmconfigitem.h>

namespace Debug{

	//Note -- Changing the size of this requires a change in KScmConfigMaxSize

    _LIT8(KScmConfigHeaderString, "SCMCONFIG");

    /**

     * This class handles the configuration section of the crash partition.

     * It is responsible for reading and writing it

     */

	class SCMConfiguration : public MByteStreamSerializable

		{

		public:

			//The 9 here refers to the size of KScmConfigHeaderString which is serialised

			static const TInt KScmConfigMaxSize = TConfigItem::ELast * sizeof(TConfigItem) + 9;

			SCMConfiguration();		

			virtual ~SCMConfiguration();

			// from MByteStreamSerializable

			virtual TInt Serialize(TByteStreamWriter& aWriter);

			virtual TInt Deserialize(TByteStreamReader& aReader);

		 	virtual TInt GetSize() const;

		 	TConfigItem* GetNextItem();

			TInt SetDefaultConfig();

			TInt CreateConfigItem(const TConfigItem::TSCMDataType aDataType, const TUint8 aPriority, const TInt32 aSizeToDump);

			TInt ModifyConfigItemPriority(const TConfigItem::TSCMDataType aDataType, const TUint8 aPriority);

			void ResetToHighestPriority();

		 	TBool operator == (const SCMConfiguration& aOther) const;

		 	TConfigItem* ConfigList() const;

			TInt InsertToList(TConfigItem* aItem);

			void ClearList(); 		

		private:	

			/**

			 * This is an ordered linked list of TConfigItems. The first is the highest priority and so on until the lowest priority 

			 */			

			TConfigItem* iConfigList;

			/**

			 * Everytime GetNextItemToDump is called this moves down along the list 

			 */

			TConfigItem* iNextItem;   

		private:	

			TInt RemoveFromList(TConfigItem* aItem);

		};

	}

#endif /*__SCMCONFIG_H_INCLUDED__*/