/*

* Copyright (c) 2006 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:   Contains CNcdNodeSkinProxy class implementation

*

*/

#include "ncdnodeskinproxy.h"

#include "ncdnodeproxy.h"

#include "ncdnodemetadataproxy.h"

#include "ncdoperationimpl.h"

#include "ncdfiledownloadoperationproxy.h"

#include "ncdoperationmanagerproxy.h"

#include "ncdoperationdatatypes.h"

#include "catalogsclientserver.h"

#include "ncdnodeidentifier.h"

#include "ncdnodefunctionids.h"

#include "ncdnodeclassids.h"

#include "catalogsinterfaceidentifier.h"

#include "catalogsutils.h"

#include "catalogsdebug.h"

#include "ncderrors.h"

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

CNcdNodeSkinProxy::CNcdNodeSkinProxy(

    MCatalogsClientServer& aSession,

    TInt aHandle,

    CNcdNodeMetadataProxy& aMetadata )

    : CNcdInterfaceBaseProxy( aSession, aHandle, &aMetadata ),

      iMetadata( aMetadata ),

      iTimeStamp( 0 )

    {

    }

void CNcdNodeSkinProxy::ConstructL()

    {

    // Register the interface

    MNcdNodeSkin* interface( this );

    AddInterfaceL( 

        CCatalogsInterfaceIdentifier::NewL( interface, this, MNcdNodeSkin::KInterfaceUid ) );

    // Make sure that the skin id contains at least some data.

    iSkinId = KNullDesC().AllocL();

    // Constructor already initialized timestamp to zero.

    InternalizeL();

    }

CNcdNodeSkinProxy* CNcdNodeSkinProxy::NewL(

    MCatalogsClientServer& aSession,

    TInt aHandle,

    CNcdNodeMetadataProxy& aMetadata )

    {

    CNcdNodeSkinProxy* self = 

        CNcdNodeSkinProxy::NewLC( aSession, aHandle, aMetadata );

    CleanupStack::Pop( self );

    return self;

    }

CNcdNodeSkinProxy* CNcdNodeSkinProxy::NewLC(

    MCatalogsClientServer& aSession,

    TInt aHandle,

    CNcdNodeMetadataProxy& aMetadata )

    {

    CNcdNodeSkinProxy* self = 

        new( ELeave ) CNcdNodeSkinProxy( aSession, aHandle, aMetadata );

    // Using PushL because the object does not have any references yet

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

CNcdNodeSkinProxy::~CNcdNodeSkinProxy()

    {

    // Remove interfaces implemented by this class from the interface list.

    // So, the interface list is up to date when this class object is deleted.

    RemoveInterface( MNcdNodeSkin::KInterfaceUid );

    // Delete member variables here

    delete iSkinId;

    iSkinId = NULL;

    // Do not delete metadata because this object does not own it.

    }

void CNcdNodeSkinProxy::InternalizeL()

    {

    DLTRACEIN((""));

    HBufC8* data( NULL );

    // Because we do not know the exact size of the data, use

    // the alloc method, which creates the buffer of the right size

    // and sets the pointer to point to the created buffer.

    // Get all the data that is necessary to internalize this object

    // from the server side.

    TInt error(

        ClientServerSession().

        SendSyncAlloc( NcdNodeFunctionIds::ENcdInternalize,

                       KNullDesC8,

                       data,

                       Handle(),

                       0 ) );

    if ( error == KNcdErrorObsolete )

        {

        DLINFO(("Skin was obsolete"));

        SetObsolete( ETrue );

        // Remove interfaces implemented by this class from the top parent interface list.

        // So, the interface list is up to date after this object is removed

        // from its top parent.

        RemoveInterface( MNcdNodeSkin::KInterfaceUid );

        // Remove from the parent

        RemoveFromParent();

        // Now update the interface for this object just in case somebody needs it.

        // Register the interface

        MNcdNodeSkin* interface( this );

        AddInterfaceL( 

            CCatalogsInterfaceIdentifier::NewL( interface, this, MNcdNodeSkin::KInterfaceUid ) );

        }

    else

        {

        // Just in case it was some times obsolete but not anymore

        SetObsolete( EFalse );

        }

    // If error occurred during data transfer, leave here and forward the error.

    User::LeaveIfError( error );

    if ( data == NULL )

        {

        DLERROR((""));

        User::Leave(  KErrNotFound );

        }

     CleanupStack::PushL( data );

     // Read the data from the stream and insert it to the memeber variables

     RDesReadStream stream( *data );

     CleanupClosePushL( stream );

     InternalizeDataL( stream );

     // Closes the stream

     CleanupStack::PopAndDestroy( &stream ); 

     CleanupStack::PopAndDestroy( data );

    DLTRACEOUT((""));    

    }

// MNcdNodeSkin functions

const TDesC& CNcdNodeSkinProxy::SkinId() const

    {

    DLTRACEIN((""));

    // SkinId is always set to contain some data. At least it is KNullDesC.

    DLINFO(( _L("SkinID: %S"), iSkinId ));

    return *iSkinId;

    }

TTime CNcdNodeSkinProxy::SkinTimeStamp() const

    {

    return iTimeStamp;

    }

MNcdFileDownloadOperation* CNcdNodeSkinProxy::LoadSkinL( 

        const TDesC& aTargetFileName,

        MNcdFileDownloadOperationObserver& aObserver )

    {

    DLTRACEIN((""));

    CNcdFileDownloadOperationProxy* operation(   

        MetadataL().Node().OperationManager().

        CreateFileDownloadOperationL( ENcdSkinDownload, 

                                      MetadataL().Node(), 

                                      &aObserver,

                                      aTargetFileName ) );

    // It is enought that the observer is informed

    // when the file operation is ready. So, no need to add

    // node or this class object to be observers.

    // No need to increase the operation ref count here because

    // it should be initially one.

    DLTRACEOUT((""));    

    return operation;

    }

// Other functions

CNcdNodeMetadataProxy& CNcdNodeSkinProxy::MetadataL() const

    {

    DLTRACEIN((""));

    if( IsObsolete() )

        {

        DLERROR(("Skin is obsolete. Metadata may not exist."));

        User::Leave( KNcdErrorObsolete );

        }

    DLTRACEOUT((""));

    return iMetadata;

    }

TBool CNcdNodeSkinProxy::IsObsolete() const

    {

    return iObsolete;

    }

void CNcdNodeSkinProxy::SetObsolete( TBool aObsolete )

    {

    iObsolete = aObsolete;

    }    

void CNcdNodeSkinProxy::InternalizeDataL( RReadStream& aStream )

    {

    DLTRACEIN((""));

    // Use catalogsutils.h functions to internalize

    // memebervariables according to the data received

    // from the server.

    // Make sure that the variables are set here in the same

    // order as they are externalized in the server side.

    // Small mistake here messes up everything!

    // First read the class id. Because, it is the first thing in the stream.

    TInt classId( aStream.ReadInt32L() );

    if ( classId != NcdNodeClassIds::ENcdNodeSkinClassId )

        {

        // classId is not recognized

        DLERROR(("Class id was not recognized!"));

        // For testing purposes assert here

        DASSERT( EFalse );

        // Otherwise leave is adequate

        User::Leave( KErrCorrupt );

        }

    // Get the skin id from the stream

    InternalizeDesL( iSkinId, aStream );

    DLINFO(( _L("SkinID: %S"), iSkinId ));

    // Get the timestamp and change the descriptor info to be TTime type

    HBufC* timeStamp( NULL );

    InternalizeDesL( timeStamp, aStream );

    if ( timeStamp != NULL && timeStamp->Length() > 0 )

        {

        CleanupStack::PushL( timeStamp );

        iTimeStamp.Parse( *timeStamp );

        CleanupStack::PopAndDestroy( timeStamp );        

        }

    else

        {

        // Because the timestamp was not given, set the time to zero value.

        // In case time stamp descriptor was allocated but length was zero, delete.

        delete timeStamp;

        iTimeStamp = 0;

        }

    DLTRACEOUT((""));

    }