/*

* Copyright (c) 2002 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:  One parameter

*

*/

//  INCLUDE FILES

#include <s32file.h>

#include "CWPParameter.h"

#include "MWPVisitor.h"

#include "WPElementFactory.h"

// CONSTANTS

/// Number of bits in half-word

const TInt KBitsPerWord = 16;

/// Mask to extract a half-word

const TInt KWordMask = 0xffff;

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

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

// CWPParameter::CWPParameter

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

// might leave.

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

//

CWPParameter::CWPParameter()

    {

    }

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

// CWPParameter::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CWPParameter::ConstructL()

    {

    iValue = KNullDesC().AllocL();

    }

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

// CWPRoot::NewL

// Two-phased constructor.

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

//

EXPORT_C CWPParameter* CWPParameter::NewL()

    {

    CWPParameter* self = NewLC();

    CleanupStack::Pop();

    return self;

    }

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

// CWPRoot::NewLC

// Two-phased constructor.

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

//

EXPORT_C CWPParameter* CWPParameter::NewLC()

    {

    CWPParameter* self = new( ELeave ) CWPParameter;

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

// Destructor

CWPParameter::~CWPParameter()

    {

    delete iName;

    delete iValue;

    }

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

// CWPParameter::CallVisitorL

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

//

void CWPParameter::CallVisitorL( MWPVisitor& aVisitor )

    {

    aVisitor.VisitL( *this );

    }

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

// CWPParameter::InternalizeL

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

//

EXPORT_C void CWPParameter::InternalizeL(RReadStream& aStream)

    {

    TInt parameterID( aStream.ReadInt32L() );

    TUint length( aStream.ReadInt32L() );

    // Lengths packed into one 32-bit word for compatibility

    TInt valueLength( length & KWordMask );

    TInt nameLength( (length >> KBitsPerWord) & KWordMask );

    HBufC* value = HBufC::NewL( aStream, valueLength );

    delete iValue;

    iValue = value;

    if( nameLength > 0 )

        {

        HBufC* name = HBufC::NewL( aStream, nameLength );

        delete iName;

        iName = name;

        }

    iParameterID = parameterID;

    }

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

// CWPParameter::ExternalizeL

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

//

EXPORT_C void CWPParameter::ExternalizeL(RWriteStream& aStream) const

    {

    aStream.WriteInt32L( iParameterID );

    // Lengths packed into one 32-bit word for compatibility

    TUint length( 0 );

    if( iValue )

        {

        length += iValue->Length();

        }

    if( iName )

        {

        length += iName->Length() << KBitsPerWord;

        }

    aStream.WriteUint32L( length );

    aStream << *iValue;

    if( iName )

        {

        aStream << *iName;

        }

    }

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

// CWPParameter::Type

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

//

EXPORT_C TInt CWPParameter::Type() const

    {

    return KWPParameter;

    }

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

// CWPParameter::SetID

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

//

EXPORT_C void CWPParameter::SetID( TInt aID )

    {

    iParameterID = aID;

    }

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

// CWPParameter::ID

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

//

EXPORT_C TInt CWPParameter::ID() const

    {

    return iParameterID;

    }

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

// CWPParameter::SetNameL

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

//

EXPORT_C void CWPParameter::SetNameL( const TDesC& aName )

    {

    HBufC* name = aName.AllocL();

    delete iName;

    iName = name;

    }

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

// CWPParameter::Name

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

//

EXPORT_C const TDesC& CWPParameter::Name() const

    {

    if( iName )

        {

        return *iName;

        }

    else

        {

        return KNullDesC;

        }

    }

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

// CWPParameter::SetValueL

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

//

EXPORT_C void CWPParameter::SetValueL( const TDesC& aValue )

    {

    HBufC* value = aValue.AllocL();

    delete iValue;

    iValue = value;

    }

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

// CWPParameter::Value

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

//

EXPORT_C const TDesC& CWPParameter::Value() const

    {

    if( iValue )

        {

        return *iValue;

        }

    else

        {

        return KNullDesC;

        }

    }

//  End of File