/*

* 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;

    constructKeySequenceToHandlerMappings();

}

/*!

  DialpadKeySequenceEventFilter::~DialpadKeySequenceEventFilter.

 */

DialpadKeySequenceEventFilter::~DialpadKeySequenceEventFilter()

{

    PHONE_TRACE;

}

/*!

  DialpadKeySequenceEventFilter::eventFilter.

 */

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

{

    Q_UNUSED(watched)

    const bool eventFiltered = false;

#ifdef Q_OS_SYMBIAN    

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

    // specification.

    if (QEvent::KeyRelease == event->type()){

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

        if (Qt::Key_NumberSign == keyEvent->key())  {        

            QString keySequenceCandidate = HbStringUtil::convertDigitsTo(

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

            XQAiwInterfaceDescriptor keySequenceHandler = 

                findKeySequenceHandler(keySequenceCandidate);

            if (keySequenceHandler.isValid()) {

                QScopedPointer<XQAiwRequest> request(mAiwMgr.create(

                    keySequenceHandler, 

                    "executeKeySequence(QString)",

                    false));

                request->setSynchronous(true);

                request->setBackground(true);

                QList<QVariant> arguments;

                arguments << keySequenceCandidate;

                request->setArguments(arguments);

                QVariant keySequenceProcessed;

                bool requestOk = request->send(keySequenceProcessed);

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

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

                }

            }

        }

    }

#else

    Q_UNUSED(event)

#endif // Q_OS_SYMBIAN

    return eventFiltered;

}

/*!

  DialpadKeySequenceEventFilter::constructKeySequenceToHandlerMappings.

 */

void DialpadKeySequenceEventFilter::constructKeySequenceToHandlerMappings()

{

    PHONE_TRACE;

    QList<XQAiwInterfaceDescriptor> implementations = mAiwMgr.list(

        "com.nokia.symbian.IKeySequenceRecognition", 

        "");

    foreach (XQAiwInterfaceDescriptor d, implementations)

    {

        QScopedPointer<XQAiwRequest> request(mAiwMgr.create(

            d,

            "keySequenceValidator()",

            false));

        request->setSynchronous(true);

        request->setBackground(true);

        QVariant keySequenceValidator;

        bool requestOk = request->send(keySequenceValidator);

        if (requestOk && keySequenceValidator.toString().size()) {

            QString validator = keySequenceValidator.toString();

            mValidators[validator] = d;

        }

    }

}

/*!

  DialpadKeySequenceEventFilter::findKeySequenceHandler.

 */

XQAiwInterfaceDescriptor DialpadKeySequenceEventFilter::findKeySequenceHandler(

    const QString &keySequenceCandidate) 

{

    PHONE_TRACE;

    XQAiwInterfaceDescriptor keySequenceHandler;

    QList<QString> validatorExpressions = mValidators.keys();

    QList<QString>::const_iterator it;

    for (it = validatorExpressions.constBegin(); 

         (it != validatorExpressions.constEnd()) && (!keySequenceHandler.isValid());

         ++it) {

        QString validatorExpression = *it;

        QRegExp expression(validatorExpression);

        if (expression.exactMatch(keySequenceCandidate)) {

            keySequenceHandler = mValidators.value(*it);

        }

    }

    return keySequenceHandler;

}