/*

* 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 the License "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:  Recognizer for the widget supported MIME types.

*

*/

#include "WidgetRecognizer.h"

// CONSTANTS

_LIT(KWidgetExtension, ".wgz");

_LIT8(KWidgetMimeType,"application/x-nokia-widget");

//

// CWidgetsRecognizer

//

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

// ============================================================================

// CWidgetRecognizer::CWidgetRecognizer()

// Default constructor

//

// @since 3.1

// ============================================================================

CWidgetRecognizer::CWidgetRecognizer()

:CApaDataRecognizerType( KUidMimeWidgetRecognizer, CApaDataRecognizerType::EHigh )

    {

    iCountDataTypes = 1;

    }

// ============================================================================

// From CApaDataRecognizerType

// Gets the size of buffer preferred for the purpose of recognizing the data type.

// @return The preferred data size.

// @since 3.1

// ============================================================================

TUint CWidgetRecognizer::PreferredBufSize()

    {

    return 0x80;

    }

// ============================================================================

// From CApaDataRecognizerType

// Gets one of the data (MIME) types that the recognizer can recognize.

// @param aIndex - An index that identifies the data type. Typically,

//        the minimum value is zero and the maximum value is the value of MimeTypesCount() - 1.

//

// @return The data (MIME) type.

// @since 3.1

// ============================================================================

TDataType CWidgetRecognizer::SupportedDataTypeL( TInt /*aIndex*/ ) const

    {

    // only support one widget mime type

    return TDataType( KWidgetMimeType() );

    }

// ============================================================================

// From CApaDataRecognizerType

// This implements recognition behaviour -- called by RecognizeL()

// @param aName - The name of the data; typically this is a file name

//                containing the data to be recognized.

// @param aBuffer - A buffer containing data to be recognized; typically,

//                  this is read from the start of the file containing the data.

//

// @return void.

// @since 3.1

// ============================================================================

void CWidgetRecognizer::DoRecognizeL( const TDesC& aName, const TDesC8& /*aBuffer*/ )

    {

    iConfidence = ENotRecognized;

    if ( aName.Length() >= 4 )

        {

        TInt dotPos = aName.LocateReverse( '.' );

        if ( dotPos != KErrNotFound )

            {

            TInt extLength = aName.Length() - dotPos;

            HBufC* ext = aName.Right( extLength ).AllocL();

            CleanupStack::PushL( ext );

            // recognize .wgz extensions.

            if (ext->CompareF( KWidgetExtension ) == 0)

                {

                iDataType = TDataType( KWidgetMimeType );

                iConfidence = ECertain;

                }

            CleanupStack::PopAndDestroy();  // ext

            }

        }

    }

// ============================================================================

// CWidgetRecognizer::CreateRecognizerL

// Create CWidgetRecognizer instance

// ============================================================================

//

CApaDataRecognizerType* CWidgetRecognizer::CreateRecognizerL()

    {

    return new (ELeave) CWidgetRecognizer();

    }

// Implementation table contains only one entry for widget recognizer

const TImplementationProxy ImplementationTable[] =

    {

    IMPLEMENTATION_PROXY_ENTRY(KWidgetRecognizerImplUIDValue, CWidgetRecognizer::CreateRecognizerL)

    };

// ========================== OTHER EXPORTED FUNCTIONS =========================

// ============================================================================

// ImplementationGroupProxy

// Returns the filters implemented in this DLL

// Returns: The filters implemented in this DLL

// ============================================================================

//

EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)

    {

    aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy);

    return ImplementationTable;

    }