/*

* Copyright (c) 2008 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:  This is the implementation of application class

*

*/

#include <e32std.h>

#include <e32svr.h>

#include "finder.h"

#ifndef DBG

#ifdef _DEBUG

#define DBG(a) a

#else

#define DBG(a)

#endif

#endif

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

TMouseFinder::TMouseFinder()

        : iXY(0), iButtons(0), iWheel(0), iAppCollection(0)

    {

    // Nothing else to do

    }

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

TBool TMouseFinder::BeginCollection(const CCollection *aCollection)

    {

    TBool examineCollection = ETrue;

    if ((aCollection->IsApplication()) && (iAppCollection == 0))

        {

        // Top-level application collection.

        if ((aCollection->UsagePage() == EUsagePageGenericDesktop)

                && (aCollection->Usage() == EGenericDesktopUsageMouse))

            {

            // Collection is a mouse device:

            iAppCollection = aCollection;

            iXY = iWheel = iButtons = 0;

            }

        else

            {

            // Skip other types of top-level application collection:

            examineCollection = EFalse;

            }

        }

    return examineCollection;

    }

TBool TMouseFinder::EndCollection(const CCollection *aCollection)

    {

    TBool continueSearch = ETrue;

    DBG(RDebug::Print(_L("[HID]\tTHeadsetFinder::EndCollection")));

    if (aCollection == iAppCollection)

        {

        // Top-level application(Generic Desktop:Mouse) finished:

        //

        iAppCollection = 0;

        // Stop if we've found a mouse we can use in this

        // application collection:

        //

        continueSearch = !Found();

        }

    return continueSearch;

    }

void TMouseFinder::Field(const CField* aField)

    {

    if (iAppCollection)

        {

        if (IsWheel(aField))

            {

            iWheel = aField;

            }

        if (IsXY(aField))

            {

            iXY = aField;

            }

        if (IsButtons(aField))

            {

            iButtons = aField;

            }

        }

    }

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

TBool TMouseFinder::IsXY(const CField* aField) const

    {

    TBool found = EFalse;

    if (aField->IsInput() && aField->IsData() &&

            (aField->UsagePage() == EUsagePageGenericDesktop))

        {

        if ( aField->HasUsage(EGenericDesktopUsageX) &&

                aField->HasUsage(EGenericDesktopUsageY) )

            {

            DBG(RDebug::Print(_L("[HID]\tXY field found")));

            found = ETrue;

            }

        }

    return found;

    }

TBool TMouseFinder::IsButtons(const CField* aField) const

    {

    TBool found = EFalse;

    if (aField->IsInput() && aField->IsData() &&

            (aField->UsagePage() == EUsagePageButton))

        {

            {

            DBG(RDebug::Print(_L("[HID]\tButtons field found")));

            found = ETrue;

            }

        }

    return found;

    }

TBool TMouseFinder::IsWheel(const CField* aField) const

    {

    TBool found = EFalse;

    if (aField->IsInput() && aField->IsData() &&

            (aField->UsagePage() == EUsagePageGenericDesktop))

        {

        if ( aField->HasUsage( EGenericDesktopUsageWheel ) )

            {

            found = ETrue;

            }

        }

    return found;

    }

// End of File