/*

* 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:   Implements CNcdNodeSkin class

*

*/

#include "ncdnodeskinimpl.h"

#include "catalogssession.h"

#include "catalogsbasemessage.h"

#include "ncdnodefunctionids.h"

#include "ncdnodeclassids.h"

#include "ncd_pp_skin.h"

#include "catalogsconstants.h"

#include "ncd_pp_dataentity.h"

#include "ncd_cp_query.h"

#include "catalogsutils.h"

#include "catalogsdebug.h"

#include "ncderrors.h"

CNcdNodeSkin* CNcdNodeSkin::NewL()

    {

    CNcdNodeSkin* self =   

        CNcdNodeSkin::NewLC();

    CleanupStack::Pop( self );

    return self;        

    }

CNcdNodeSkin* CNcdNodeSkin::NewLC()

    {

    CNcdNodeSkin* self = 

        new( ELeave ) CNcdNodeSkin( 

            NcdNodeClassIds::ENcdNodeSkinClassId );

    CleanupClosePushL( *self );

    self->ConstructL();

    return self;        

    }

CNcdNodeSkin::~CNcdNodeSkin()

    {

    DLTRACEIN((""));

    // Delete member variables here

    delete iId;

    iId = NULL;

    delete iTimeStamp;

    iTimeStamp = NULL;

    delete iUri;

    iUri = NULL;

    DLTRACEOUT((""));

    }        

NcdNodeClassIds::TNcdNodeClassId CNcdNodeSkin::ClassId() const

    {

    return iClassId;

    }

// Internalization from the protocol

void CNcdNodeSkin::InternalizeL( MNcdPreminetProtocolDataEntity& aData )

    {

    DLTRACEIN((""));

    // First create the new values

    HBufC* tmpId = aData.Skin()->Id().AllocLC();

    DLTRACE((_L("id: %S"), tmpId));

    HBufC* tmpTimeStamp = aData.Skin()->Timestamp().AllocLC();

    DLTRACE((_L("timestamp: %S"), tmpTimeStamp));

    HBufC* tmpUri = aData.Skin()->Uri().AllocLC();

    DLTRACE((_L("uri: %S"), tmpUri));

    // Now, that we are sure we have correctly created new values and the

    // code cannot leave here, set the tmp values to the member variables.

    delete iUri;

    iUri = tmpUri;

    CleanupStack::Pop( tmpUri );

    delete iTimeStamp;

    iTimeStamp = tmpTimeStamp;

    CleanupStack::Pop( tmpTimeStamp );

    delete iId;

    iId = tmpId;

    CleanupStack::Pop( tmpId );

    DLTRACEOUT(( _L("SkinId: %S"), iId ));

    }

// Internalization from and externalization to the database

void CNcdNodeSkin::ExternalizeL( RWriteStream& aStream )

    {

    DLTRACEIN((""));

    // Set all the membervariable values to the stream. So,

    // that the stream may be used later to create a new

    // object.

    // First insert data that the creator of this class object will use to

    // create this class object. Class id informs what class object

    // will be created.

    aStream.WriteInt32L( iClassId );

    // Write the data that will be used when internalize function

    // is called. catalogsutils.h contains good internalize and

    // externalize functions.

    // Make sure that this matches to the order that is used 

    // when this stream is internalized.

    ExternalizeDesL( *iId, aStream );

    ExternalizeDesL( *iTimeStamp, aStream );

    ExternalizeDesL( *iUri, aStream );

    DLTRACEOUT((""));

    }

void CNcdNodeSkin::InternalizeL( RReadStream& aStream )

    {

    DLTRACEIN((""));

    // Read the class id first because it is set to the stream in internalize

    // function and it is not read from the stream anywhere else.

    TInt classId( aStream.ReadInt32L() );

    if ( classId != ClassId() )

        {

        DLTRACE(("Wrong class id"));

        DASSERT( EFalse );

        // Leave because the stream does not match this class object

        User::Leave( KErrCorrupt );

        }

    InternalizeDesL( iId, aStream );

    InternalizeDesL( iTimeStamp, aStream );

    InternalizeDesL( iUri, aStream );

    DLTRACEOUT(( _L("SkinId: %S"), iId ));

    }

void CNcdNodeSkin::ReceiveMessage( MCatalogsBaseMessage* aMessage,

                                   TInt aFunctionNumber )

    {

    DLTRACEIN((""));    

    DASSERT( aMessage );

    // Now, we can be sure that rest of the time iMessage exists.

    // This member variable is set for the CounterPartLost function.

    iMessage = aMessage;

    TInt trapError( KErrNone );

    // Check which function is called by the proxy side object.

    // Function number are located in ncdnodefunctinoids.h file.

    switch( aFunctionNumber )

        {

        case NcdNodeFunctionIds::ENcdInternalize:

            // Internalize the proxy side according to the data

            // of this object.

            TRAP( trapError, InternalizeRequestL( *aMessage ) );

            break;

        case NcdNodeFunctionIds::ENcdRelease:

            // The proxy does not want to use this object anymore.

            // So, release the handle from the session.

            ReleaseRequest( *aMessage );

            break;

        default:

            DLERROR(("Unidentified function request"));

            DASSERT( EFalse );

            break;

        }

    if ( trapError != KErrNone )

        {

        // Because something went wrong, the complete has not been

        // yet called for the message.

        // So, inform the client about the error if the

        // message is still available.

        aMessage->CompleteAndRelease( trapError );

        }

    // Because the message should not be used after this, set it NULL.

    // So, CounterPartLost function will know that no messages are

    // waiting the response at the moment.

    iMessage = NULL;        

    DLTRACEOUT((""));

    }

void CNcdNodeSkin::CounterPartLost( const MCatalogsSession& aSession )

    {

    // This function may be called whenever -- when the message is waiting

    // response or when the message does not exist.

    // iMessage may be NULL here, because in the end of the

    // ReceiveMessage it is set to NULL. The life time of the message

    // ends shortly after CompleteAndRelease is called.

    if ( iMessage != NULL )

        {

        iMessage->CounterPartLost( aSession );

        }

    }

const TDesC& CNcdNodeSkin::SkinId() const

    {

    DASSERT( iId );

    return *iId;

    }

const TDesC& CNcdNodeSkin::TimeStamp() const

    {

    DASSERT( iTimeStamp );

    return *iTimeStamp;

    }

void CNcdNodeSkin::SetTimeStampL( const TDesC& aTimeStamp )

    {

    AssignDesL( iTimeStamp, aTimeStamp );

    }

const TDesC& CNcdNodeSkin::Uri() const

    {

    DASSERT( iUri );

    return *iUri;

    }

CNcdNodeSkin::CNcdNodeSkin( NcdNodeClassIds::TNcdNodeClassId aClassId )

: CNcdCommunicable(),

  iClassId( aClassId )

    {

    }

void CNcdNodeSkin::ConstructL()

    {

    iId = KNullDesC().AllocL();

    iTimeStamp = KNullDesC().AllocL();

    iUri = KNullDesC().AllocL();

    }

void CNcdNodeSkin::InternalizeRequestL( MCatalogsBaseMessage& aMessage ) const

    {

    DLTRACEIN((""));

    CBufBase* buf = CBufFlat::NewL( KBufExpandSize );

    CleanupStack::PushL( buf );

    RBufWriteStream stream( *buf );

    CleanupClosePushL( stream );

    // Include all the necessary data to the stream.

    ExternalizeDataForRequestL( stream );     

    // Commits data to the stream when closing.

    CleanupStack::PopAndDestroy( &stream );

    // If this leaves, ReceiveMessage will complete the message.

    // NOTE: that here we expect that the buffer contains at least

    // some data. So, make sure that ExternalizeDataForRequestL inserts

    // something to the buffer.

    aMessage.CompleteAndReleaseL( buf->Ptr( 0 ), KErrNone );        

    DLTRACE(("Deleting the buf"));

    CleanupStack::PopAndDestroy( buf );

    DLTRACEOUT((""));

    }

void CNcdNodeSkin::ExternalizeDataForRequestL( RWriteStream& aStream ) const

    {

    DLTRACEIN((""));

    if ( IsObsolete() )

        {

        DLINFO(("Set as obsolete. This means that server has removed the object."));

        User::Leave( KNcdErrorObsolete );

        }

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

    // Skin existed. So, insert info that meta data was found.

    aStream.WriteInt32L( ClassId() );

    // Add additional content to the stream.

    // Make sure that this matches to the order that is used in the proxy

    // side when this stream is internalized.

    // NOTE: Be careful with the 8- and 16-bit descriptors. Remember to check

    // if the proxy wants the data in 16 or 8 bits?    

    ExternalizeDesL( SkinId(), aStream );

    ExternalizeDesL( TimeStamp(), aStream );

    DLTRACEOUT((""));

    }

void CNcdNodeSkin::ReleaseRequest( MCatalogsBaseMessage& aMessage ) const

    {

    DLTRACEIN((""));

    // Decrease the reference count for this object.

    // When the reference count reaches zero, this object will be destroyed

    // and removed from the session.

    MCatalogsSession& requestSession( aMessage.Session() );

    TInt handle( aMessage.Handle() );

    // Send complete information back to proxy.

    aMessage.CompleteAndRelease( KErrNone );

    // Remove this object from the session.

    requestSession.RemoveObject( handle );

    DLTRACEOUT((""));

    }