/*!

* Copyright (c) 2010 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: Implements key sequence recognition filter for Dialpad.

*

*/

#ifndef DIALPADKEYSEQUENCEEVENTFILTER_H

#define DIALPADKEYSEQUENCEEVENTFILTER_H

#include <qobject>

class Dialpad;

/*!

    DialpadKeySequenceEventFilter

    Class provides key sequence recognition and handling.

*/

class DialpadKeySequenceEventFilter : public QObject

{

    Q_OBJECT

public:

    explicit DialpadKeySequenceEventFilter(

        Dialpad* dialpad, 

        QObject* parent = 0);

    virtual ~DialpadKeySequenceEventFilter();

public:

    bool eventFilter(QObject *watched, QEvent *event);

private:

    /*!

       \fn bool preValidateKeySequence()

       Checks if the given sequence conforms key sequence command syntax.

       \return true if sequence conforms key sequence command syntax, 

       false otherwise.  

    */

    bool preValidateKeySequence(const QString &sequence);

private:

    /*! Dialpad. Not own. */

    Dialpad* mDialpad;

};

#endif // DIALPADKEYSEQUENCEEVENTFILTER_H