/*

* Copyright (c) 2008 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:  Contact sorter

*

*/

// INCLUDE FILES

#include    "cvimpststoragecontactsorter.h"

#include    "mvimpststoragecontact.h"

#include    "tvimpstenums.h"

#include    "cvimpststoragedefs.h"

// The order of contacts if sorted by status

const TInt KConstOnline  = 1;

const TInt KConstBusy	= 2;

const TInt KConstAway    = 3;

const TInt KConstServiceOut = 4;

const TInt KConstOnPhone = 5;

const TInt KConstInvisible = 6;

const TInt KConstOffline = 7;

const TInt KConstCallForward = 8;

const TInt KConstUnknown = 9;

// local functions 

// sorting algorithms, you can add new one to extend functionality

// Compares alphabetically using MVIMPSTStorageContact::Identification and 

// TDesC::CompareC

TInt CompareAlphabetically( const MVIMPSTStorageContact& aFirst, 

                           const MVIMPSTStorageContact& aSecond )

    {

    return aFirst.Name().CompareC( aSecond.Name(),

                                             KCollationLevel, NULL );

    }

// Group the contact by it's status. 

TInt OrderContact( const MVIMPSTStorageContact& aContact )

    {

     // Contact is not blocked, group by presence status

      switch( aContact.OnlineStatus() )

            {

            case TVIMPSTEnums::EOnline:

                {

                return KConstOnline;  // First group, contact is online

                }

            case TVIMPSTEnums::EDoNotDisturb:

			case TVIMPSTEnums::EBusy:

                {

                return KConstBusy;  // second group, contact is busy/donotdisturb

                }

			case TVIMPSTEnums::EOnPhone:

                {

                return KConstOnPhone;  //fifth group, contact is onphone

                }

			case TVIMPSTEnums::EInvisible:

                {

                return KConstInvisible;  // sixth group, contact is invisible

                }

            case TVIMPSTEnums::EAway:

                {

                return KConstAway;    // third group, contact is away

                }

            case TVIMPSTEnums::EOffline:

                {

                return KConstOffline; // seventh group, contact is offline

                }

			case TVIMPSTEnums::ECallForward:

			    {

			    return KConstCallForward; // eight group, contact state is callforward

			    }

            case TVIMPSTEnums::EServiceOut:

                {

                return KConstServiceOut;  // fourth group, contact is serviceout(has ony pstn or msisdn number)

                }

            default:

                {

                return KConstUnknown; //  unknown status

                }

            }

    }

// Compares by contact status, -1 = aFirst is greater, 1 = aSecond is greater.

TInt CompareByPresence( const MVIMPSTStorageContact& aFirst, 

                        const MVIMPSTStorageContact& aSecond )

    {

    TInt firstGroup( OrderContact( aFirst ) );

    TInt secondGroup( OrderContact( aSecond ) );

    // If both contacts belong to same group, sort alphabetically

    if( firstGroup == secondGroup )

        {

        return CompareAlphabetically( aFirst, aSecond );

        }

    // Otherwise return the difference of groups

    return firstGroup - secondGroup;

    }

// ================= MEMBER FUNCTIONS =======================

// Two-phased constructor.

CVIMPSTStorageContactSorter* CVIMPSTStorageContactSorter::NewL() 

    {

    CVIMPSTStorageContactSorter* self = new( ELeave ) CVIMPSTStorageContactSorter();

    return self;

    }

// Destructor

CVIMPSTStorageContactSorter::~CVIMPSTStorageContactSorter()

    {

    }

// ---------------------------------------------------------

// CVIMPSTStorageContactSorter::Sort( RPointerArray<MVIMPSTStorageContact>& aList )

// Sorts given array.

// ---------------------------------------------------------

//

void CVIMPSTStorageContactSorter::Sort( RPointerArray< MVIMPSTStorageContact >& aList )

    {

    aList.Sort( iAlgorithm );

    }

// ---------------------------------------------------------

// CVIMPSTStorageContactSorter::Compare( const MVIMPSTStorageContact& aFirst, 

//                                  const MVIMPSTStorageContact& aSecond ) const

// Get function pointer from inside of TLinearOrder and 

// execute the function.

// ---------------------------------------------------------

//

TInt CVIMPSTStorageContactSorter::Compare( const MVIMPSTStorageContact& aFirst, 

                                    const MVIMPSTStorageContact& aSecond ) const

    {

    return iAlgorithm.operator TGeneralLinearOrder()( &aFirst, &aSecond );

    }

// C++ default constructor can NOT contain any code, that

// might leave.

// Default algorithm is alphabetic. It is changed later in ConstructL.

//

CVIMPSTStorageContactSorter::CVIMPSTStorageContactSorter() : 

    iAlgorithm( *CompareByPresence )

    {

    }

// ---------------------------------------------------------

// CVIMPSTStorageContactSorter::SetSortAlgorithm()

// Get setting item value and choose algorithm.

// New algorithms can be added to this method.

// ---------------------------------------------------------

//

void CVIMPSTStorageContactSorter::SetSortAlgorithm( 

                            MVIMPSTStorageContact::TSortAlgorithm aAlgorithm )

    {    

    switch( aAlgorithm )

            {

        case MVIMPSTStorageContact::ECompareByPresence: 

            {

            iAlgorithm = 

                  TLinearOrder< MVIMPSTStorageContact > ( *CompareByPresence );

            break;

            }

        case MVIMPSTStorageContact::ECompareAlphabetically: // flowthrough

        default : 

            {

            iAlgorithm = 

                  TLinearOrder< MVIMPSTStorageContact > ( *CompareAlphabetically );

            break;

            }

        }

    }

// ---------------------------------------------------------

// CVIMPSTStorageContactSorter::InsertOrder()

// Get setting item value and choose algorithm.

// New algorithms can be added to this method.

// ---------------------------------------------------------

//    

TLinearOrder< MVIMPSTStorageContact >& CVIMPSTStorageContactSorter::InsertOrder()

    {

    return iAlgorithm;

    }

// End of file