/*

* Copyright (c) 2007-2009 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:  ESMR calendar entry conflict checker

*

*/

#ifndef CESMRCONFLICTCHECKER_H

#define CESMRCONFLICTCHECKER_H		

#include <e32base.h>

#include <calcommon.h>

class CCalEntry;

class MESMRCalDbMgr;

/**

 *  CESMRConflictChecker is responsible for finding

 *  conflicting entries from symbian calendar database.

 *

 *  @lib esmrentry.lib

 */

NONSHARABLE_CLASS(CESMRConflictChecker) :

        public CBase

    {

public: // Construction and destruction

    /**

     * Two-phased constructor. Creates and initializes

     * CESMRConflictChecker object.

     * @param aDbMgr Reference to cal db manager.

     * @return Pointer to esmr policy checker object.

     */

    IMPORT_C static CESMRConflictChecker* NewL(

            MESMRCalDbMgr& aDbMgr );

    /**

     * C++ destructor.

     */

    IMPORT_C ~CESMRConflictChecker();

public: // Interface

    /**

     * Finds conflicting entries. Conflicting entries are

     * stored to table given as parameter. Ownership of the

     * conflicting entries are transferred to caller.

     *

     * @param aEntry Reference to calendar entry

     * @param aConflicts Reference to calendar entry table

     */

    IMPORT_C void FindConflictsL(

            const CCalEntry& aEntry,

            RPointerArray<CCalEntry>& aConflicts );

    /**

     * Finds instances for this entry occuring between specified

     * time range, that are in conflict with given entry. 

     * Ownership of the conflicting entries are transferred to caller.

     * @param aStart Start time

     * @param aEnd End time

     * @param aEntry Reference to entry

     * @param aColId Collection id of the entry

     * @param aInstances On return contains the conflicting instances 

     * 

     */

    IMPORT_C void FindInstancesForEntryL(

            TTime aStart, 

            TTime aEnd,

            const CCalEntry& aEntry,

            TCalCollectionId aColId,

            RPointerArray<CCalEntry>& aInstances );

private: // Implementation

    CESMRConflictChecker(

            MESMRCalDbMgr& aDbMgr );

private: // Data

    /// Ref: Reference to cal db manager

    MESMRCalDbMgr& iDbMgr;

    };

#endif // CESMRCONFLICTCHECKER_H

// EOF