/*

* 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 characteristic.

*

*/

//  INCLUDE FILES

#include "CWPCharacteristic.h"

#include <s32std.h>

#include <e32svr.h>

#include "MWPVisitor.h"

#include "CWPParameter.h"

#include "WPElementFactory.h"

#include "CWPEngine.pan"

#include "WPEngineDebug.h"

// CONSTANTS

/// Default data item number in Data() and SetData(), if none supplied

const TInt KDefaultDataNum = 0;

/// Data array granularity

const TInt KDataGranularity = 3;

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

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

// CWPCharacteristic::CWPCharacteristic

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

// might leave.

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

//

CWPCharacteristic::CWPCharacteristic( TInt aType )

: iType( aType )

    {

    }

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

// CWPCharacteristic::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CWPCharacteristic::ConstructL()

    {

    }

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

// CWPCharacteristic::NewL

// Two-phased constructor.

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

//

CWPCharacteristic* CWPCharacteristic::NewL( TInt aType )

    {

    CWPCharacteristic* self = NewLC( aType );

    CleanupStack::Pop();

    return self;

    }

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

// CWPCharacteristic::NewLC

// Two-phased constructor.

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

//

CWPCharacteristic* CWPCharacteristic::NewLC( TInt aType )

    {

    CWPCharacteristic* self = new( ELeave ) CWPCharacteristic( aType );

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

// Destructor

CWPCharacteristic::~CWPCharacteristic()

    {

    iElements.ResetAndDestroy();

    iElements.Close();

    iLinks.Close();

    if ( iData )

        {

        iData->ResetAndDestroy();

        }

    delete iData;

    delete iName;

    }

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

// CWPCharacteristic::InsertL

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

//

EXPORT_C void CWPCharacteristic::InsertL( MWPElement* aElement )

    {

    __ASSERT_DEBUG( aElement != NULL, Panic( EWPNullElement ) );

    User::LeaveIfError( iElements.Append( aElement ) );

    }

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

// CWPCharacteristic::InsertLinkL

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

//

EXPORT_C void CWPCharacteristic::InsertLinkL( CWPCharacteristic& aParameter )

    {

    __ASSERT_DEBUG( aParameter.Type() == KWPPxLogical 

        || aParameter.Type() == KWPNapDef,

        Panic( EWPIllegalLink ) );

    User::LeaveIfError( iLinks.Append( &aParameter ) );

    }

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

// CWPCharacteristic::SetNameL

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

//

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

    {

    HBufC* name = aName.AllocL();

    delete iName;

    iName = name;

    }

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

// CWPCharacteristic::Name

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

//

EXPORT_C const TDesC& CWPCharacteristic::Name() const

    {

    if( iName )

        {

        return *iName;

        }

    else

        {

        return KNullDesC;

        }

    }

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

// CWPCharacteristic::SetDataL

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

//

EXPORT_C void CWPCharacteristic::SetDataL( const TDesC8& aData )

    {

    SetDataL( aData, KDefaultDataNum );

    }

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

// CWPCharacteristic::SetDataL

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

//

EXPORT_C void CWPCharacteristic::SetDataL( const TDesC8& aData, TInt aIndex )

    {

    HBufC8* data = aData.AllocLC();

    if ( !iData )

        {

        iData = new (ELeave) CArrayPtrSeg<HBufC8>( KDataGranularity );

        }

    // Check if there's already item in given index

    if ( iData->Count() > aIndex )

        {

        HBufC8* oldData = iData->At(aIndex);

        iData->Delete( aIndex );

        delete oldData;

        oldData = NULL;

        iData->InsertL( aIndex, data );

        CleanupStack::Pop( data );

        }

    else // Not as many items in array as pointed by index. Append as last item.

        {

        iData->AppendL( data );

        CleanupStack::Pop( data );

        }

    }

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

// CWPCharacteristic::DeleteAllData

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

//

EXPORT_C void CWPCharacteristic::DeleteAllData()

    {

    if ( iData )

        {

        iData->ResetAndDestroy();

        delete iData;

        iData = NULL;

        }   

    }

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

// CWPCharacteristic::Data

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

//

EXPORT_C const TDesC8& CWPCharacteristic::Data() const

    {

    return Data( KDefaultDataNum );

    }

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

// CWPCharacteristic::Data

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

//

EXPORT_C const TDesC8& CWPCharacteristic::Data( TInt aIndex ) const

    {

    if ( iData && iData->Count() > 0 && aIndex >= 0 && aIndex < iData->Count() )

        {

        return *iData->At( aIndex );

        }

    else

        {

        return KNullDesC8;

        }

    }

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

// CWPCharacteristic::InternalizeL

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

//

void CWPCharacteristic::InternalizeL(RReadStream& aStream)

    {

    TInt paramCount( aStream.ReadInt32L() );

    for( TInt i( 0 ); i < paramCount; i++ )

        {

        TInt type( aStream.ReadInt32L() );

        MWPElement* newElement = WPElementFactory::CreateLC( type );

        newElement->InternalizeL( aStream );

        User::LeaveIfError( iElements.Append( newElement ) );

        CleanupStack::Pop(); // newElement

        }

    }

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

// CWPCharacteristic::ExternalizeL

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

//

void CWPCharacteristic::ExternalizeL(RWriteStream& aStream) const

    {

    aStream.WriteInt32L( iElements.Count() );

    for( TInt i( 0 ); i < iElements.Count(); i++ )

        {

        const MWPElement* element = iElements[i];

        aStream.WriteInt32L( element->Type() );

        element->ExternalizeL( aStream );

        }

    }

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

// CWPCharacteristic::CallVisitorL

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

//

void CWPCharacteristic::CallVisitorL( MWPVisitor& aVisitor )

    {

    aVisitor.VisitL( *this );

    }

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

// CWPCharacteristic::Type

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

//

TInt CWPCharacteristic::Type() const

    {

    return iType;

    }

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

// CWPCharacteristic::AcceptL

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

//

EXPORT_C void CWPCharacteristic::AcceptL(MWPVisitor& aVisitor)

    {

    for( TInt i( 0 ); i < iElements.Count(); i++ )

        {

        iElements[i]->CallVisitorL( aVisitor );

        }

    for( TInt j( 0 ); j < iLinks.Count(); j++ )

        {

        aVisitor.VisitLinkL( *iLinks[j] );

        }

    }

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

// CWPCharacteristic::ParameterL

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

//

EXPORT_C void CWPCharacteristic::ParameterL( TInt aID, 

                                            CArrayFix<TPtrC>* aParameters )

    {

    aParameters->Reset();

    for( TInt i( 0 ); i < iElements.Count(); i++ )

        {

        if( iElements[i]->Type() == KWPParameter )

            {

            CWPParameter* parameter = STATIC_CAST(CWPParameter*, iElements[i]);

            if( parameter->ID() == aID )

                {

                aParameters->AppendL( parameter->Value() );

                }

            }

        }

    }

//  End of File