/*

* 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:  Declares main application class.

 *

*/

#ifndef __FINDER_H

#define __FINDER_H

#include <e32std.h>

#include "hidreportroot.h"

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

/**

 *  Field finder for the ordinary keyboard fields.

 */

class TKeyboardFinder : public MHidFieldFinder

    {

public:

    // From MHidFieldFinder

    virtual TBool BeginCollection(const CCollection *aCollection);

    virtual TBool EndCollection(const CCollection *aCollection);

    virtual void Field(const CField* aField);

public:

    /** Constructor */

    TKeyboardFinder();

    /**

     *  Check whether the required fields have been found.

     *  @return ETrue if they have.

     */

    inline TBool Found() const;

    /**

     *  Get the field containing the standard keys, if found.

     *  @return CField* Pointer to the field, or NULL.

     */

    const CField* StandardKeyField() const;

    /**

     *  Get the field containing the modifier keys, if found.

     *  @return CField* Pointer to the field, or NULL.

     */

    const CField* ModifierKeyField() const;

    /**

     *  Get the field containing the LEDs, if found.

     *  @return CField* Pointer to the field, or NULL.

     */

    const CField* LedField() const;

private:

    /**

     *  Check whether a given field contains the standard keys.

     *  @param aField Pointer to the field to test.

     *  @return ETrue if it does.

     */

    TBool IsStandardKeys(const CField* aField) const;

    /**

     *  Check whether a given field contains the modifier keys.

     *  @param aField Pointer to the field to test.

     *  @return ETrue if it does.

     */

    TBool IsModifiers(const CField* aField) const;

    /**

     *  Check whether a given field contains the LEDs.

     *  @param aField Pointer to the field to test.

     *  @return ETrue if it does.

     */

    TBool IsLeds(const CField* aField) const;

private:

    /** Pointer to the field containing the standard keys. */

    const CField* iStandardKeys;

    /** Pointer to the field containing the modifier keys. */

    const CField* iModifierKeys;

    /** Pointer to the field containing the LEDs. */

    const CField* iLeds;

    /** Pointer to the top level application collection being searched. */

    const CCollection* iAppCollection;

    };

/**

 *  Field finder for the consumer/multimedia keys field.

 */

class TConsumerKeysFinder : public MHidFieldFinder

    {

public:

    // From MHidFieldFinder

    virtual TBool BeginCollection(const CCollection *aCollection);

    virtual TBool EndCollection(const CCollection *aCollection);

    virtual void Field(const CField* aField);

public:

    /** Constructor */

    TConsumerKeysFinder();

    /**

     *  Get the field containing the consumer keys, if found.

     *  @return CField* Pointer to the field, or NULL.

     */

    inline const CField* ConsumerKeysField() const;

    /**

     *  Check whether the consumer keys field has been found.

     *  @return ETrue if it has.

     */

    inline TBool Found() const;

private:

    /** Pointer to the field containing the consumer keys. */

    const CField* iField;

    };

/**

 *  Field finder for the power keys field.

 */

class TPowerKeysFinder : public MHidFieldFinder

    {

public:

    // From MHidFieldFinder

    virtual TBool BeginCollection(const CCollection *aCollection);

    virtual TBool EndCollection(const CCollection *aCollection);

    virtual void Field(const CField* aField);

public:

    /** Constructor */

    TPowerKeysFinder();

    /**

     *  Get the field containing the power keys, if found.

     *  @return CField* Pointer to the field, or NULL.

     */

    inline const CField* PowerKeysField() const;

    /**

     *  Check whether the power keys field has been found.

     *  @return ETrue if it has.

     */

    inline TBool Found() const;

private:

    /** Pointer to the field containing the power keys. */

    const CField* iField;

    };

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

inline TBool TKeyboardFinder::Found() const

    {

    // Standard and modifier key fields are always necessary, but the

    // LED field is optional:

    //

    return iStandardKeys && iModifierKeys;

    }

inline const CField* TKeyboardFinder::StandardKeyField() const

    {

    return iStandardKeys;

    }

inline const CField* TKeyboardFinder::ModifierKeyField() const

    {

    return iModifierKeys;

    }

inline const CField* TKeyboardFinder::LedField() const

    {

    return iLeds;

    }

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

inline const CField* TConsumerKeysFinder::ConsumerKeysField() const

    {

    return iField;

    }

inline TBool TConsumerKeysFinder::Found() const

    {

    return (iField != 0);

    }

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

inline const CField* TPowerKeysFinder::PowerKeysField() const

    {

    return iField;

    }

inline TBool TPowerKeysFinder::Found() const

    {

    return (iField != 0);

    }

#endif