/*

* 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:  

*

*/

#ifndef CPCS_PLUGIN_INTERFACE_H

#define CPCS_PLUGIN_INTERFACE_H

// INCLUDE FILES

#include <s32mem.h>

#include <coemain.h>

#include <CPcsDefs.h>

#include "CPsClientData.h"

#include "CPsQuery.h"

#include "CPsSettings.h"

#include "CPsPattern.h"

// FORWARD DECLARATION	

class CPcsPlugin;

/**

* Class is used to instantiate the required plugins when the search has been

* asked. Acts as interface to all Plugins.

*/

class CPcsPluginInterface: public CBase 

{

	public:

		/** 

		* Symbian OS 2 phased constructor.

		* @return	A pointer to the created instance of CPcsPluginInterface.

		*/

		static CPcsPluginInterface* NewL();

		/** 

		* Symbian OS 2 phased constructor.

		* @return	A pointer to the created instance of CPcsPluginInterface.

		*/

		static CPcsPluginInterface* NewLC();

		/**

		* Destructor.

		*/      

		virtual ~CPcsPluginInterface();

		/**

		* Instantiates the required search plug-ins known by the ecom framework.

		* basically this function first calls ListAllImplementationsL()

		* and then checks them one by one to match the algorithm name

		*/

		void InstantiateAlgorithmL(TDes& aAlgorithm);

		/**

		* Unloads all plugins

		* This should internally call  REComSession::DestroyedImplementation( iDtor_ID_Key )

		* and then REComSession::FinalClose()

		*/

		void UnloadPlugIns(); 

		/**

		* Lists all implementations which satisfy this ecom interface

		*

		* @param aImplInfoArray On return, contains the list of available implementations

		* 

		*/   

		inline void ListAllImplementationsL( RImplInfoPtrArray& aImplInfoArray )

		{

			REComSession::ListImplementationsL( KPcsPluginInterfaceUid, aImplInfoArray );

		}

		/**

		* Forwards the search request to the algorithm instance

		*/

		void  PerformSearchL(CPsSettings& aSettings,

				             CPsQuery& aCondition,

				             RPointerArray<CPsClientData>& aPsData,

				             RPointerArray<CPsPattern>& aPattern);

		/**

		* Forwards the search request to the algorithm instance

		*/

		void  SearchInputL(CPsQuery& aSearchQuery,

				           TDesC& aSearchData,

				           RPointerArray<TDesC>& aMatchSet,

				           RArray<TPsMatchLocation>& aMatchLocation); 

        /**

        * Forwards the search request to the algorithm instance

        */

        void  SearchMatchStringL(CPsQuery& aSearchQuery,

                           TDesC& aSearchData,

                           TDes& aMatch ); 		

		/**

		* Forwards the request to check if language is supported

		* to the algorithm instance

		*/

		TBool IsLanguageSupportedL(const TUint32 aLanguage);   

		/**

		* Forwards the request to recover data fields order for a URI

		* to the algorithm instance

		*/

		void GetDataOrderL(TDesC& aURI, RArray<TInt>& aDataOrder);

		/**

		* Forwards the request to recover sort order for a URI

		* to the algorithm instance

		*/

		void GetSortOrderL(TDesC& aURI, RArray<TInt>& aSortOrder);  

		/**

		* Forwards the request to set sort order for a URI

		* to the algorithm instance

		*/

		void ChangeSortOrderL(TDesC& aURI, RArray<TInt>& aSortOrder);

		/** 

		* Returns the UID of the algorithm in use

		*/

		TUid AlgorithmInUse() 

		{

			return iAlgorithmInUse;

		}

	private: 

		/** 

		* Performs the first phase of two phase construction.

		*/

		CPcsPluginInterface();  

		/** 

		* Symbian OS 2 phased constructor.

		*/

		void ConstructL();

		/**

		* Instantiates a PCS plug-in, knowing the implementation uid.

		* @param aImpUid imp uID

		*/

		CPcsPlugin* InstantiatePlugInFromImpUidL( const TUid& aImpUid );

	private: 

		TUid iDtor_ID_Key;

		// List of plugins that this interface will interact with

		RPointerArray<CPcsPlugin>  iPcsPluginInstances; 

		// Uid of the algorithm in use

		TUid iAlgorithmInUse;

};

#endif // CPCS_PLUGIN_INTERFACE_H

//End of File