/*

 * 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:

 *

 */

// INCLUDE FILES

#include <badesca.h>

#include "widgetscannerutils.h"

#include "cawidgetstoragehandler.h"

#include "cadef.h"

#include "cainnerentry.h"

#include "cainnerquery.h"

#include "castorageproxy.h"

#include "caarraycleanup.inl"

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

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

// CCaWidgetStorageHandler::CCaWidgetStorageHandler

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

// might leave.

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

//

CCaWidgetStorageHandler::CCaWidgetStorageHandler(

        CCaStorageProxy* aStorage, RFs& aFs )

    {

    iStorage = aStorage;

    iFs = aFs;

    }

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

// CCaWidgetStorageHandler::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CCaWidgetStorageHandler::ConstructL()

    {

    }

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

// CCaWidgetStorageHandler::NewL

// Two-phased constructor.

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

//

CCaWidgetStorageHandler* CCaWidgetStorageHandler::NewL(

        CCaStorageProxy* aStorage, RFs& aFs )

    {

    CCaWidgetStorageHandler* self = NewLC( aStorage, aFs );

    CleanupStack::Pop( self );

    return self;

    }

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

// CCaWidgetStorageHandler::NewLC

// Two-phased constructor.

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

//

CCaWidgetStorageHandler* CCaWidgetStorageHandler::NewLC(

        CCaStorageProxy* aStorage, RFs& aFs )

    {

    CCaWidgetStorageHandler* self = new ( ELeave ) CCaWidgetStorageHandler(

            aStorage, aFs );

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

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

// Destructor

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

//

CCaWidgetStorageHandler::~CCaWidgetStorageHandler()

    {

    iWidgets.ResetAndDestroy();

    iUpdatedIndexes.Close();

    }

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

//

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

//

void CCaWidgetStorageHandler::SynchronizeL( const RWidgetArray& aWidgets )

    {

    FetchWidgetsL();

    AddWidgetsL( aWidgets );

    RemoveWidgetsL();

    }

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

//

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

//

void CCaWidgetStorageHandler::AddL( const CCaWidgetDescription* aWidget )

    {

    CCaInnerEntry* entry = aWidget->GetEntryLC();

    iStorage->AddL( entry );

    if( entry->GetFlags() & ERemovable )

        {

        AddWidgetToDownloadCollectionL( entry );

        }

    CleanupStack::PopAndDestroy( entry );

    }

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

//

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

//

void CCaWidgetStorageHandler::UpdateL( const CCaWidgetDescription* aWidget,

        TUint aEntryId )

    {

    CCaInnerEntry* entry = aWidget->GetEntryLC();

    entry->SetId( aEntryId );

    if( !aWidget->IsMissing() && aWidget->IsUsed() )

        {

        entry->SetFlags( entry->GetFlags() & ~EUsed );

        }

    TItemAppearance itemAppearanceChange = EItemAppearanceNotChanged;

    if( ( entry->GetFlags() & EMissing ) ||

        !( entry->GetFlags() & EVisible ) )

        {

        itemAppearanceChange = EItemAppeared;

        }

    entry->SetFlags( entry->GetFlags() & ~EMissing | EVisible );

    iStorage->AddL( entry, EFalse, itemAppearanceChange );

    if( !aWidget->IsMissing() )

        {

        AddWidgetToDownloadCollectionL( entry );

        }

    CleanupStack::PopAndDestroy( entry );

    }

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

//

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

//

void CCaWidgetStorageHandler::AddWidgetsL( const RWidgetArray& aWidgets )

    {

    iUpdatedIndexes.Reset();

    for( TInt i = 0; i < aWidgets.Count(); i++ )

        {

        TInt index = iWidgets.Find(

                aWidgets[i], CCaWidgetDescription::Compare );

        if( index != KErrNotFound )

            {

            if( !iWidgets[index]->Compare( *aWidgets[i] ) ||

                    iWidgets[index]->IsMissing() )

                {

                aWidgets[i]->SetMissing( iWidgets[index]->IsMissing() );

                aWidgets[i]->SetUsed( iWidgets[index]->IsUsed() );

                aWidgets[i]->SetVisible( iWidgets[index]->IsVisible() );

                UpdateL( aWidgets[i], iWidgets[index]->GetEntryId() );

                }

            iUpdatedIndexes.AppendL( index );

            }

        else

            {

            AddL( aWidgets[i] );

            }

        }

    }

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

//

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

//

void CCaWidgetStorageHandler::RemoveWidgetsL()

    {

    for( TInt i = 0; i < iWidgets.Count(); i++ )

        {

        if( iUpdatedIndexes.Find( i ) == KErrNotFound )

            {

            if( iWidgets[i]->GetMmcId() != KNullDesC )

                {

                RBuf currentMmcId;

                currentMmcId.CreateL( KMassStorageIdLength );

                currentMmcId.CleanupClosePushL();

                WidgetScannerUtils::CurrentMmcId( iFs, currentMmcId );

                if( iWidgets[i]->GetMmcId() == currentMmcId ||

                        ( iWidgets[i]->GetMmcId() == KCaMassStorage() &&

                        MassStorageNotInUse() ) )

                    {

                    //item was uninstalled so we remove its mmc id

                    iWidgets[i]->RemoveMmcId();

                    ClearVisibleFlagL( iWidgets[i] );

                    }

                else

                    {

                    SetMissingFlagL( iWidgets[i] );

                    }

                CleanupStack::PopAndDestroy(&currentMmcId);

                }

            else

                {

                //item was uninstalled so we remove its mmc id

                ClearVisibleFlagL( iWidgets[i] );

                }

            }

        }

    }

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

//

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

//

void CCaWidgetStorageHandler::AddWidgetToDownloadCollectionL(

        const CCaInnerEntry* aEntry )

    {

    CCaInnerQuery* queryDownload = CCaInnerQuery::NewLC();

    CDesC16ArrayFlat* downloadType = new ( ELeave ) CDesC16ArrayFlat(

            KGranularityOne );

    CleanupStack::PushL( downloadType );

    downloadType->AppendL( KCaTypeCollectionDownload );

    queryDownload->SetEntryTypeNames( downloadType );//query takes ownership

    CleanupStack::Pop( downloadType );

    queryDownload->SetRole( EGroupEntryRole );

    RArray<TInt> idsGroup;

    CleanupClosePushL( idsGroup );

    iStorage->GetEntriesIdsL( queryDownload, idsGroup );

    TCaOperationParams operParams;

    operParams.iOperationType = TCaOperationParams::EPrepend;

    operParams.iGroupId = idsGroup[0];

    operParams.iBeforeEntryId = 0;

    CleanupStack::PopAndDestroy( &idsGroup );

    RArray<TInt> idsEntry;

    CleanupClosePushL( idsEntry );

    idsEntry.Append( aEntry->GetId() );

    iStorage->OrganizeL( idsEntry, operParams );

    CleanupStack::PopAndDestroy( &idsEntry );

    CleanupStack::PopAndDestroy( queryDownload );

    }

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

//

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

//

void CCaWidgetStorageHandler::FetchWidgetsL()

    {

    CCaInnerQuery* query = CCaInnerQuery::NewLC();

    CDesC16ArrayFlat* widgetType = new ( ELeave ) CDesC16ArrayFlat(

            KGranularityOne );

    CleanupStack::PushL( widgetType );

    widgetType->AppendL( KCaTypeWidget );

    query->SetEntryTypeNames( widgetType );//transfers ownership to query

    CleanupStack::Pop( widgetType );

    RPointerArray<CCaInnerEntry> entries;

    CleanupResetAndDestroyPushL( entries );

    iStorage->GetEntriesL( query, entries );

    iWidgets.ResetAndDestroy();

    for( TInt i = 0; i < entries.Count(); i++ )

        {

        CCaWidgetDescription* widget = CCaWidgetDescription::NewLC(

                entries[i] );

        iWidgets.AppendL( widget ); //iWidgets takes ownership

        CleanupStack::Pop( widget );

        }

    CleanupStack::PopAndDestroy( &entries );

    CleanupStack::PopAndDestroy( query );

    }

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

//

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

//

void CCaWidgetStorageHandler::SetMissingFlagL(

        const CCaWidgetDescription* aWidget )

    {

    if( !aWidget->IsMissing() )

        {

        CCaInnerEntry* entry = aWidget->GetEntryLC();

        entry->SetFlags( entry->GetFlags() | EMissing );

        if( aWidget->IsUsed() )

            {

            entry->SetFlags( entry->GetFlags() | EUsed );

            }

        iStorage->AddL( entry, EFalse, EItemDisappeared );

        CleanupStack::PopAndDestroy( entry );

        }

    }

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

//

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

//

void CCaWidgetStorageHandler::ClearVisibleFlagL(

        const CCaWidgetDescription* aWidget )

    {

    if( aWidget->IsVisible() )

        {

        CCaInnerEntry* entry = aWidget->GetEntryLC();

        entry->SetFlags( entry->GetFlags() & ~EVisible & ~EMissing & ~EUsed );

        iStorage->AddL( entry, EFalse, EItemDisappeared );

        CleanupStack::PopAndDestroy( entry );

        }

    }

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

//

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

//

TBool CCaWidgetStorageHandler::MassStorageNotInUse()

    {

    TBool massStorageNotInUse( ETrue );

    TInt drive;

    if( DriveInfo::GetDefaultDrive( DriveInfo::EDefaultMassStorage, drive ) ==

        KErrNone )

        {

        TUint status;

        if( DriveInfo::GetDriveStatus( iFs, drive, status ) == KErrNone &&

            ( status & DriveInfo::EDriveInUse ) )

            {

            massStorageNotInUse = EFalse;

            }

        }

    return massStorageNotInUse;

    }

//  End of File