/*

* Copyright (c) 2006-2007 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:  Implementation class of Thumbnail Manager.

 *

*/

#include <e32base.h>

#include <akniconconfig.h>

#include <fbs.h>

#include <badesca.h>

#include <centralrepository.h>

#include <thumbnailmanager.h>

#include "thumbnailmanagerimpl.h"

#include "thumbnailrequestactive.h"

#include "thumbnailprovider.h"

#include "thumbnailsession.h"

#include "thumbnailmanageruids.hrh"

#include "thumbnailmanagerprivatecrkeys.h"

#include "thumbnailpanic.h"

#include "thumbnaildata.h"

const TInt KThumbnailMimeTypeListGranularity = 8;

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

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

// CThumbnailManagerImpl::~CThumbnailManagerImpl()

// Destructor.

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

//

CThumbnailManagerImpl::~CThumbnailManagerImpl()

    {

    TN_DEBUG1( "CThumbnailManagerImpl::~CThumbnailManagerImpl() - start" );

    delete iRequestQueue;  

    iRequestQueue = NULL;

    iSession.Close();

    iFs.Close();

    // Check if we need to disconnect Fbs

    TInt sessionCount = (TInt)Dll::Tls(); 

    if ( sessionCount > 0)

        { 

        if( --sessionCount == 0 )

            {

		    TN_DEBUG1( "CThumbnailManagerImpl::~CThumbnailManagerImpl() - Disconnect FBS" );

            iFbsSession.Disconnect();

            }

	    TN_DEBUG2( "CThumbnailManagerImpl::~CThumbnailManagerImpl() - update sessionCount == %d to TLS", sessionCount );

        Dll::SetTls( (TAny*)sessionCount );

        }

    delete iMimeTypeList;

	TN_DEBUG1( "CThumbnailManagerImpl::~CThumbnailManagerImpl() - end" );

    }

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

// CThumbnailManagerImpl::NewLC()

// Two-phased constructor.

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

//

CThumbnailManagerImpl* CThumbnailManagerImpl::NewLC( MThumbnailManagerObserver&

    aObserver )

    {

    CThumbnailManagerImpl* self = new( ELeave )CThumbnailManagerImpl( aObserver );

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

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

// CThumbnailManagerImpl::CThumbnailManagerImpl()

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

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

//

CThumbnailManagerImpl::CThumbnailManagerImpl( MThumbnailManagerObserver&

    aObserver ): iObserver( aObserver ), iRequestObserver( NULL ), iDisplayMode(

    KThumbnailDefaultDisplayMode ), iFlags( EDefaultFlags ), iQualityPreference

    ( EOptimizeForQuality ), iRequestId( 0 )

    {

    // No implementation required

    TN_DEBUG1( "CThumbnailManagerImpl::CThumbnailManagerImpl()" );

    }

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

// CThumbnailManagerImpl::ConstructL()

// Symbian 2nd phase constructor can leave.

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

//

void CThumbnailManagerImpl::ConstructL()

    {

    TN_DEBUG1( "CThumbnailManagerImpl::ConstructL - start");

    User::LeaveIfError( iSession.Connect());

    User::LeaveIfError( iFs.Connect());

    User::LeaveIfError( iFs.ShareProtected());

    if ( !RFbsSession::GetSession() )

        {

        // We need to connect to Fbs (first user in this thread)

        // Maintain a reference count in TLS

        User::LeaveIfError( iFbsSession.Connect()); 

        Dll::SetTls( (TAny*)1 ); 

        TN_DEBUG2( "CThumbnailManagerImpl::ConstructL() - update sessionCount == %d to TLS", 1 );

        }

    else

        {

        TInt sessionCount = (TInt)Dll::Tls(); 

        if( sessionCount++ > 0 )

            {

            // Increase the reference count in TLS

            Dll::SetTls( (TAny*)sessionCount );

            TN_DEBUG2( "CThumbnailManagerImpl::ConstructL() - update sessionCount == %d to TLS", sessionCount );

            } 

        else

            {

            // Fbs connection was available in the beginning, no need to

            // increase the reference count

            TN_DEBUG1( "CThumbnailManagerImpl::ConstructL - no need to update sessionCount");

            }

        }

    // request processor

    iRequestQueue = CThumbnailRequestQueue::NewL();

    TN_DEBUG1( "CThumbnailManagerImpl::ConstructL - end");

    }

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

// CThumbnailManagerImpl::GetThumbnailL

// Get a thumbnail for an object file.

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

//

TThumbnailRequestId CThumbnailManagerImpl::GetThumbnailL(

    CThumbnailObjectSource& aObjectSource, TAny* aClientData /*= NULL*/, const

    TInt aPriority, TBool aGeneratePersistentSizesOnly)

    {

    iRequestId++;

    TN_DEBUG4( "CThumbnailManagerImpl::GetThumbnailL() URI==%S, iThumbnailSize==%d, req %d", &aObjectSource.Uri(), iThumbnailSize, iRequestId );

    __ASSERT_DEBUG(( iRequestId > 0 ), ThumbnailPanic( EThumbnailWrongId ));

    TInt priority = ValidatePriority(aPriority);

    CThumbnailRequestActive* getThumbnailActive = CThumbnailRequestActive::NewL

        ( iFs, iSession, iObserver, iRequestObserver, iRequestId, priority, iRequestQueue );

    CleanupStack::PushL( getThumbnailActive );

    if(aObjectSource.Id() > 0)

        {

        getThumbnailActive->GetThumbnailL( aObjectSource.Uri(), aObjectSource.Id(), iFlags,

            iQualityPreference, iSize, iDisplayMode, priority, aClientData, aGeneratePersistentSizesOnly,

            KNullDesC, iThumbnailSize);

        }

    else if ( aObjectSource.Uri().Length())

        {

        getThumbnailActive->GetThumbnailL( aObjectSource.Uri(), aObjectSource.Id(), iFlags,

            iQualityPreference, iSize, iDisplayMode, priority, aClientData, aGeneratePersistentSizesOnly,

            KNullDesC, iThumbnailSize );

        }

    else

        {

        getThumbnailActive->GetThumbnailL( aObjectSource.FileHandle(), aObjectSource.Id(), iFlags,

            iQualityPreference, iSize, iDisplayMode, priority, aClientData, aGeneratePersistentSizesOnly,

            KNullDesC, iThumbnailSize );

        }

    iRequestQueue->AddRequestL( getThumbnailActive );

    CleanupStack::Pop( getThumbnailActive );

    iRequestQueue->Process();

    TN_DEBUG2( "CThumbnailManagerImpl::GetThumbnailL() - request ID: %d", iRequestId );

    return iRequestId;

    }

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

// CThumbnailManagerImpl::GetThumbnailL

// Get a thumbnail for an object file.

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

//

TThumbnailRequestId CThumbnailManagerImpl::GetThumbnailL(

    CThumbnailObjectSource& aObjectSource, TAny* aClientData /*= NULL*/, const

    TInt aPriority )

    {

    return GetThumbnailL( aObjectSource, aClientData, aPriority, EFalse );

    }    

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

// CThumbnailManagerImpl::GetThumbnailL

// Get a thumbnail for an object file.

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

//

TThumbnailRequestId CThumbnailManagerImpl::GetThumbnailL( const TThumbnailId

    aThumbnailId, TAny* aClientData /*= NULL*/, TInt aPriority)

    {

    iRequestId++;

    TN_DEBUG4( "CThumbnailManagerImpl::GetThumbnailL() aThumbnailId==%d, iThumbnailSize==%d, req %d", aThumbnailId, iThumbnailSize, iRequestId );

    __ASSERT_DEBUG(( iRequestId > 0 ), ThumbnailPanic( EThumbnailWrongId ));

    TInt priority = ValidatePriority(aPriority);

    CThumbnailRequestActive* getThumbnailActive = CThumbnailRequestActive::NewL

        ( iFs, iSession, iObserver, iRequestObserver, iRequestId, priority, iRequestQueue );

    CleanupStack::PushL( getThumbnailActive );

    getThumbnailActive->GetThumbnailL( KNullDesC, aThumbnailId, iFlags,

                       iQualityPreference, iSize, iDisplayMode, priority, aClientData,

                       EFalse, KNullDesC, iThumbnailSize );

    iRequestQueue->AddRequestL( getThumbnailActive );

    CleanupStack::Pop( getThumbnailActive );

    iRequestQueue->Process();

    TN_DEBUG2( "CThumbnailManagerImpl::GetThumbnailL() - request ID: %d", iRequestId );

    return iRequestId;

    }

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

// CThumbnailManagerImpl::ImportThumbnailL

// Import an image to be used as thumbnail for an object.

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

//

TThumbnailRequestId CThumbnailManagerImpl::ImportThumbnailL(

    CThumbnailObjectSource& aObjectSource, const TDesC& aTargetUri,

    TAny* aClientData /*= NULL*/, const TInt aPriority)

    {

    iRequestId++;

    __ASSERT_DEBUG(( iRequestId > 0 ), ThumbnailPanic( EThumbnailWrongId ));

    TInt priority = ValidatePriority(aPriority);

    CThumbnailRequestActive* getThumbnailActive = CThumbnailRequestActive::NewL

        ( iFs, iSession, iObserver, iRequestObserver, iRequestId, priority, iRequestQueue );

    CleanupStack::PushL( getThumbnailActive );

    if ( aObjectSource.Uri().Length())

        {

        getThumbnailActive->GetThumbnailL( aObjectSource.Uri(), aObjectSource.Id(), iFlags,

            iQualityPreference, iSize, iDisplayMode, priority, aClientData,

            EFalse, aTargetUri, iThumbnailSize );

        }

    else

        {

        getThumbnailActive->GetThumbnailL( aObjectSource.FileHandle(), aObjectSource.Id(), 

            iFlags, iQualityPreference, iSize, iDisplayMode, priority, aClientData,

            EFalse, aTargetUri, iThumbnailSize );

        }

    iRequestQueue->AddRequestL( getThumbnailActive );

    CleanupStack::Pop( getThumbnailActive );

    iRequestQueue->Process();

    TN_DEBUG2( "CThumbnailManagerImpl::ImportThumbnailL() - request ID: %d", iRequestId );

    return iRequestId;

    }

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

// CThumbnailManagerImpl::SetThumbnailL

// Import an image to be used as thumbnail for an object.

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

//

TThumbnailRequestId CThumbnailManagerImpl::SetThumbnailL( CThumbnailObjectSource& aObjectSource,

    TAny* aClientData, TInt aPriority )

    {

    iRequestId++;

    __ASSERT_DEBUG(( iRequestId > 0 ), ThumbnailPanic( EThumbnailWrongId ));

    TInt priority = ValidatePriority(aPriority);

    CThumbnailRequestActive* getThumbnailActive = CThumbnailRequestActive::NewL

        ( iFs, iSession, iObserver, iRequestObserver, iRequestId, priority, iRequestQueue );

    CleanupStack::PushL( getThumbnailActive );

    if (aObjectSource.Uri().Length() &&

        aObjectSource.Bitmap() != NULL)

        {

        // from bitmap

        getThumbnailActive->SetThumbnailL( aObjectSource.GetBitmapOwnership(),

                     aObjectSource.Id(), KBmpMime, iFlags, iQualityPreference,

                     iSize, iDisplayMode, priority, aClientData, ETrue,

                     aObjectSource.Uri(), iThumbnailSize, ETrue);

        } 

    else if (aObjectSource.Uri().Length() &&

             aObjectSource.Buffer() != NULL &&

             aObjectSource.MimeType() != KNullDesC8)

        {

        // from buffer

        getThumbnailActive->SetThumbnailL( aObjectSource.GetBufferOwnership(), aObjectSource.Id(),

            aObjectSource.MimeType(), iFlags, iQualityPreference, iSize, iDisplayMode,

            priority, aClientData, ETrue, aObjectSource.Uri(), iThumbnailSize, ETrue);

        }

    iRequestQueue->AddRequestL( getThumbnailActive );

    CleanupStack::Pop( getThumbnailActive );

    iRequestQueue->Process();

    TN_DEBUG2( "CThumbnailManagerImpl::SetThumbnailL() - request ID: %d", iRequestId );

    return iRequestId;

    }

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

// CThumbnailManagerImpl::CreateThumbnails

// Create persistent size thumbnails for an object.

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

//

TThumbnailRequestId CThumbnailManagerImpl::CreateThumbnails(

	CThumbnailObjectSource& aObjectSource, TInt aPriority )

	{

	TRAPD(err,

		TN_DEBUG2( "CThumbnailManagerImpl::CreateThumbnails() aObjectSource==%S ", &aObjectSource.Uri() );

		iRequestId++;

		__ASSERT_DEBUG(( iRequestId > 0 ), ThumbnailPanic( EThumbnailWrongId ));

		TInt priority = ValidatePriority(aPriority);

		CThumbnailRequestActive* getThumbnailActive = CThumbnailRequestActive::NewL

			( iFs, iSession, iObserver, iRequestObserver, iRequestId, priority, iRequestQueue );

		CleanupStack::PushL( getThumbnailActive );

		if (aObjectSource.Bitmap())

			{

			// from bitmap

			getThumbnailActive->SetThumbnailL( aObjectSource.GetBitmapOwnership(),

						 aObjectSource.Id(), KBmpMime, iFlags, iQualityPreference,

						 iSize, iDisplayMode, priority, NULL, ETrue,

						 aObjectSource.Uri(), EUnknownThumbnailSize, EFalse);

			}

		else if( !aObjectSource.Buffer() )

			{        

			getThumbnailActive->GetThumbnailL( aObjectSource.Id(), 

						 aObjectSource.Uri(), iFlags, iQualityPreference, iSize,

						 iDisplayMode, priority, NULL, ETrue, aObjectSource.Uri(), 

						 EUnknownThumbnailSize);      

			}

		else

			{

			// from buffer

			getThumbnailActive->SetThumbnailL( aObjectSource.GetBufferOwnership(),

						 aObjectSource.Id(), aObjectSource.MimeType(), iFlags,

						 iQualityPreference, iSize, iDisplayMode, priority, NULL,

						 ETrue, aObjectSource.Uri(), EUnknownThumbnailSize, EFalse);

			}

		iRequestQueue->AddRequestL( getThumbnailActive );

		CleanupStack::Pop( getThumbnailActive );

		iRequestQueue->Process();

		TN_DEBUG2( "CThumbnailManagerImpl::CreateThumbnails() - request ID: %d", iRequestId );

	);

	if( err != KErrNone)

	    {

	    return err;

	    }

    return iRequestId;		

	}

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

// CThumbnailManagerImpl::DisplayMode()

// Get the current display mode for thumbnail bitmaps.

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

//

TDisplayMode CThumbnailManagerImpl::DisplayMode()const

    {

    return iDisplayMode;

    }

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

// CThumbnailManagerImpl::SetDisplayModeL()

// Set the current display mode for thumbnail bitmaps.

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

//

void CThumbnailManagerImpl::SetDisplayModeL( const TDisplayMode aDisplayMode )

    {

    iDisplayMode = aDisplayMode;

    }

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

// CThumbnailManagerImpl::QualityPreference()

// Get the current quality versus performance preference.

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

//

CThumbnailManager::TThumbnailQualityPreference CThumbnailManagerImpl

    ::QualityPreference()const

    {

    return iQualityPreference;

    }

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

// CThumbnailManagerImpl::SetQualityPreferenceL()

// Set quality versus performance preference.

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

//

void CThumbnailManagerImpl::SetQualityPreferenceL( const

    TThumbnailQualityPreference aQualityPreference )

    {

    iQualityPreference = aQualityPreference;

    }

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

// CThumbnailManagerImpl::ThumbnailSize()

// Get the current desired size for thumbnail bitmaps.

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

//

const TSize& CThumbnailManagerImpl::ThumbnailSize()const

    {

    return iSize;

    }

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

// CThumbnailManagerImpl::SetThumbnailSizeL()

// Set desired size for thumbnail bitmaps.

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

//

void CThumbnailManagerImpl::SetThumbnailSizeL( const TSize& aThumbnailSize )

    {

    iSize = aThumbnailSize;

    iThumbnailSize = ECustomThumbnailSize;

    }

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

// CThumbnailManagerImpl::SetThumbnailSizeL()

// Set desired size for thumbnail bitmaps.

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

//

void CThumbnailManagerImpl::SetThumbnailSizeL( const TThumbnailSize aThumbnailSize )

    {

    iThumbnailSize = aThumbnailSize;

    }

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

// CThumbnailManagerImpl::Flags()

// Get current flags for thumbnail generation.

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

//

CThumbnailManager::TThumbnailFlags CThumbnailManagerImpl::Flags()const

    {

    return iFlags;

    }

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

// CThumbnailManagerImpl::SetFlagsL()

// Set flags for thumbnail generation. Several flags may be enabled

// by combining the values using bitwise or.

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

//

void CThumbnailManagerImpl::SetFlagsL( const TThumbnailFlags aFlags )

    {

    iFlags = aFlags;

    }

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

// CThumbnailManagerImpl::DeleteThumbnails()

// Delete all thumbnails for a given object.

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

//

void CThumbnailManagerImpl::DeleteThumbnails( CThumbnailObjectSource&

    aObjectSource )

    {

	TRAP_IGNORE(

		iRequestId++;

		TN_DEBUG2( "CThumbnailManagerImpl::DeleteThumbnails() URI==%S ", &aObjectSource.Uri() );

		__ASSERT_DEBUG(( iRequestId > 0 ), ThumbnailPanic( EThumbnailWrongId ));

		CThumbnailRequestActive* getThumbnailActive = CThumbnailRequestActive::NewL

			( iFs, iSession, iObserver, iRequestObserver, iRequestId, CActive::EPriorityIdle, 

			  iRequestQueue );