/*

* 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.

*

*/

#include <qdebug>

#include <qkeyevent>

#include <hblineedit.h>

#include <hbstringutil.h>

#ifdef Q_OS_SYMBIAN

#include <xqservicerequest.h>

#include <xqserviceutil.h>

#endif //Q_OS_SYMBIAN

#include "dialpadkeysequenceeventfilter.h"

#include "dialpad.h"

#include "qtphonesrvlog.h"

/*!

  DialpadKeySequenceEventFilter::DialpadKeySequenceEventFilter.

 */

DialpadKeySequenceEventFilter::DialpadKeySequenceEventFilter(

    Dialpad* dialpad, QObject* parent) 

    :

    QObject(parent), mDialpad(dialpad)

{

    PHONE_TRACE;

}

/*!

  DialpadKeySequenceEventFilter::~DialpadKeySequenceEventFilter.

 */

DialpadKeySequenceEventFilter::~DialpadKeySequenceEventFilter()

{

    PHONE_TRACE;

}

/*!

  DialpadKeySequenceEventFilter::eventFilter.

 */

bool DialpadKeySequenceEventFilter::eventFilter(QObject *watched, QEvent *event)

{

    PHONE_TRACE;

    Q_UNUSED(watched)

    const bool eventFiltered = false;

#ifdef Q_OS_SYMBIAN

    QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);

    const int keyCode = keyEvent->key();

    const int eventType = event->type();

    // Code is executed after '#' is pressed as specified in Dialer UI 

    // specification.

    QString keySequenceCandidate = HbStringUtil::convertDigitsTo(

        mDialpad->editor().text(), WesternDigit);

    if (QEvent::KeyRelease == eventType && 

        Qt::Key_NumberSign == keyCode &&

        preValidateKeySequence(keySequenceCandidate)) {

        XQServiceRequest request(

            "executeKeySequence(QString)",

            true);

        // Workaround for getting focus back to dialer after service request.

        XQRequestInfo requestInfo;

        requestInfo.setBackground(true);

        request.setInfo(requestInfo);

        QVariant keySequenceProcessed;

        request << keySequenceCandidate;

        bool requestOk = request.send(keySequenceProcessed);

        if (requestOk && keySequenceProcessed.toBool()) {

            mDialpad->editor().setText(QString(""));

        }

    }

#else

    Q_UNUSED(event)

#endif // Q_OS_SYMBIAN

    return eventFiltered;

}

/*!

  DialpadKeySequenceEventFilter::preValidateKeySequence.

  Checks that key sequence starts with '*#'and ends with '#'.

 */

bool DialpadKeySequenceEventFilter::preValidateKeySequence(

    const QString &sequence)

{

    const int KMinimumLength = 4;

    bool isValid = false;

    int lengthOfSequence = sequence.length();

    if (KMinimumLength <= lengthOfSequence) {

        isValid = 

            (sequence.at(0) == '*') && 

            (sequence.at(1) == '#') && 

            (sequence.at(lengthOfSequence - 1) == '#');

    }

    return isValid;

}