/*

* 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:  Class for providing list filtering.

*

*/

#include <mpxmedia.h>

#include <mpxmediaarray.h>

#include <mpxmediageneraldefs.h>

#include "mpxcommoncontainerfilteredlist.h"

// CONSTANTS

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

//

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

//

CMPXCommonContainerFilteredList* CMPXCommonContainerFilteredList::NewL()

    {

    CMPXCommonContainerFilteredList* self =

        CMPXCommonContainerFilteredList::NewLC();

    CleanupStack::Pop( self );

    return self;

    }

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

//

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

//

CMPXCommonContainerFilteredList* CMPXCommonContainerFilteredList::NewLC()

    {

    CMPXCommonContainerFilteredList* self =

        new (ELeave) CMPXCommonContainerFilteredList();

    CleanupStack::PushL( self );

    return self;

    }

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

//

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

//

CMPXCommonContainerFilteredList::CMPXCommonContainerFilteredList()

 :  iFiltering( EFalse )

    {

    }

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

//

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

//

CMPXCommonContainerFilteredList::~CMPXCommonContainerFilteredList()

    {

    iFilteredMediaList.Reset();

    delete iFilteringWord;

    }

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

//

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

//

void CMPXCommonContainerFilteredList::ReplaceMediaListL( const CMPXMediaArray& aMediaList )

    {

    iMediaList = const_cast<CMPXMediaArray*>(&aMediaList);

    if ( iFiltering )

        {

        HBufC* tempWord = iFilteringWord;

        CleanupStack::PushL( tempWord );

        iFilteringWord = NULL;

        ReAdjustFilteringL( *tempWord );

        CleanupStack::PopAndDestroy( tempWord );

        }

    }

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

//

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

//

void CMPXCommonContainerFilteredList::SetFilteringWordL( const TDesC& aWord )

    {

    if ( aWord.Length() > 0 )

        {

        if ( HasMediaList() )

            {

            ReAdjustFilteringL( aWord );

            iFiltering = ETrue;

            }

        }

    else

        {

        iFilteredMediaList.Reset();

        delete iFilteringWord;

        iFilteringWord = NULL;

        iFiltering = EFalse;

        }

    }

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

//

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

//

TBool CMPXCommonContainerFilteredList::IsFiltering()

    {

    return iFiltering;

    }

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

//

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

//

TBool CMPXCommonContainerFilteredList::HasMediaList()

    {

    return iMediaList != NULL;

    }

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

//

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

//

TInt CMPXCommonContainerFilteredList::FilteredCount()

    {

    if ( HasMediaList() )

        {

        if ( iFiltering )

            {

            return iFilteredMediaList.Count();

            }

        else

            {

            return iMediaList->Count();

            }

        }

    return 0;

    }

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

//

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

//

TBool CMPXCommonContainerFilteredList::IsFilteredIndexValid( TInt aFilteredIndex )

    {

    if ( HasMediaList() && aFilteredIndex >= 0 )

        {

        if ( iFiltering )

            {

            if ( aFilteredIndex < iFilteredMediaList.Count() )

                {

                return ETrue;

                }

            }

        else

            {

            if ( aFilteredIndex < iMediaList->Count() )

                {

                return ETrue;

                }

            }

        }

    return EFalse;

    }

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

//

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

//

TInt CMPXCommonContainerFilteredList::FilteredIndexToRealIndex( TInt aFilteredIndex )

    {

    TInt realIndex( KErrNotFound );

    if ( HasMediaList() )

        {

        if ( iFiltering )

            {

            if ( aFilteredIndex < iFilteredMediaList.Count() )

                {

                realIndex = iFilteredMediaList[aFilteredIndex];

                }

            }

        else

            {

            if ( aFilteredIndex < iMediaList->Count() )

                {

                realIndex = aFilteredIndex;

                }

            }

        }

    return realIndex;

    }

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

//

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

//

void CMPXCommonContainerFilteredList::ReAdjustFilteringL( const TDesC& aWord )

    {

    CMPXMedia* media = NULL;

    // If user added more letters to filtering, update from existing set.

    if ( iFilteringWord &&

         iFilteringWord->Length() < aWord.Length() )

        {

        TInt ri( KErrNotFound );

        for ( TInt fi = 0; fi < iFilteredMediaList.Count(); fi++ )

            {

            ri = iFilteredMediaList[fi];

            if ( ri < iMediaList->Count() )

                {

                media = (*iMediaList)[ri];

                if ( media->IsSupported( KMPXMediaGeneralTitle ) )

                    {

                    if ( media->ValueText( KMPXMediaGeneralTitle ).FindF( aWord ) == KErrNotFound )

                        {

                        iFilteredMediaList.Remove( fi );

                        fi--;

                        }

                    }

                }

            }

        }

    // If there is no filtering, or user removed letters, create a new filtering set.

    else

        {

        iFilteredMediaList.Reset();

        for ( TInt ri = 0; ri < iMediaList->Count(); ri++ )

            {

            media = (*iMediaList)[ri];

            if ( media->IsSupported( KMPXMediaGeneralTitle ) )

                {

                if ( media->ValueText( KMPXMediaGeneralTitle ).FindF( aWord ) != KErrNotFound )

                    {

                    iFilteredMediaList.AppendL( ri );

                    }

                }

            }

        }

    delete iFilteringWord;

    iFilteringWord = NULL;

    iFilteringWord = aWord.AllocL();

    }