// Copyright (c) 1997-2009 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 __AGSEXTRACTOR_H__

#define __AGSEXTRACTOR_H__

#include "calinstanceviewimpl.h"

#include "agmdate.h"

#include "agsindexiterator.h"

class CAgnEntryModel;

class CAgnIndex;

class CAgnSimpleEntryTable;

class TAgnIterator;

class TAgnSortInstance;

/** The instance extractor.

The extractor is given an iterator that it will use to iterate through entries and create instances.

@internalComponent

*/

class CAgnInstanceExtractor : public CBase

	{

public:	

	CAgnInstanceExtractor(TAgnIterator* aIterator, CAgnEntryModel& aEntryModel);

	~CAgnInstanceExtractor();

	inline void SetIndex(CAgnIndex& aSimpleEntryIndex);

	inline void SetFilter(const TAgnFilter& aFilter);

	inline void SetUndatedTodoTime(const TTime& aUndatedTodoTime);

	void FindInstancesL(CArrayFix<TAgnSortInstance>& aInstances, const TFindInstanceParams& aSearchParams);

	void NextInstancesL(CArrayFix<TAgnSortInstance>& aInstances, const TFindInstanceParams& aSearchParams);			

	void PreviousInstancesL(CArrayFix<TAgnSortInstance>& aInstances, const TFindInstanceParams& aSearchParams);

private:

	inline const TAgnFilter* Filter() const;

	inline const TTime& UndatedTodoTime() const;

#ifdef SYMBIAN_SKIPPED_CALENDAR_ALARMS

	TBool ContinueSearchL(const TBool aAlarmInstanceSearch, const TTime& aSearchRangeEndLocal) const;

	void InsertInstanceL(const TBool aAlarmInstanceSearch, 

						 CArrayFix<TAgnSortInstance>& aInstances, 

						 TAgnSortInstance& aInstance,

						 const TFindInstanceParams& aFindInstanceParams) const;

#endif	

private:

	CAgnEntryModel& iEntryModel;

	TTime iUndatedTodoTime;

	TAgnIterator* iIterator;

	};

/** An interface that groups together instance extraction operations

@internalComponent

*/

class TAgnInstanceExtractor

	{

public:

	TAgnInstanceExtractor(CAgnSimpleEntryTable& aEntryInfoTable);

	void FindInstancesL(CArrayFix<TAgnSortInstance>& aList, const TFindInstanceParams& aSearchParams);

	void NextPossibleInstancesL(CArrayFix<TAgnSortInstance>& aInstances, const TFindInstanceParams& aSearchParams);

	void PreviousPossibleInstancesL(CArrayFix<TAgnSortInstance>& aInstances, const TFindInstanceParams& aSearchParams);

private:

	CAgnSimpleEntryTable* iSimpleEntryTable;

	};

#include "agsextractor.inl"

#endif