1 /*

     2 * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: Implements key sequence recognition filter for Dialpad.

    15 *

    16 */

    17 #include <qdebug>

    18 #include <qkeyevent>

    19 #include <hblineedit.h>

    20 #include <hbstringutil.h>

    21 #ifdef Q_OS_SYMBIAN

    22 #include <xqservicerequest.h>

    23 #include <xqserviceutil.h>

    24 #endif //Q_OS_SYMBIAN

    25 #include "dialpadkeysequenceeventfilter.h"

    26 #include "dialpad.h"

    27 #include "qtphonesrvlog.h"

    28 

    29 /*!

    30   DialpadKeySequenceEventFilter::DialpadKeySequenceEventFilter.

    31  */

    32 DialpadKeySequenceEventFilter::DialpadKeySequenceEventFilter(

    33     Dialpad* dialpad, QObject* parent) 

    34     :

    35     QObject(parent), mDialpad(dialpad)

    36 {

    37     PHONE_TRACE;

    38 }

    39 

    40 

    41 /*!

    42   DialpadKeySequenceEventFilter::~DialpadKeySequenceEventFilter.

    43  */

    44 DialpadKeySequenceEventFilter::~DialpadKeySequenceEventFilter()

    45 {

    46     PHONE_TRACE;

    47 }

    48 

    49 

    50 /*!

    51   DialpadKeySequenceEventFilter::eventFilter.

    52  */

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

    54 {

    55     PHONE_TRACE;

    56     Q_UNUSED(watched)

    57     

    58     const bool eventFiltered = false;

    59 #ifdef Q_OS_SYMBIAN

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

    61     const int keyCode = keyEvent->key();

    62     const int eventType = event->type();

    63     

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

    65     // specification.

    66     QString keySequenceCandidate = HbStringUtil::convertDigitsTo(

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

    68     if (QEvent::KeyRelease == eventType && 

    69         Qt::Key_NumberSign == keyCode &&

    70         preValidateKeySequence(keySequenceCandidate)) {

    71         XQServiceRequest request(

    72             "com.nokia.services.telephony",

    73             "executeKeySequence(QString)",

    74             true);

    75         

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

    77         XQRequestInfo requestInfo;

    78         requestInfo.setBackground(true);

    79         request.setInfo(requestInfo);

    80         

    81         QVariant keySequenceProcessed;

    82         request << keySequenceCandidate;

    83         bool requestOk = request.send(keySequenceProcessed);

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

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

    86         }

    87     }

    88 #else

    89     Q_UNUSED(event)

    90 #endif // Q_OS_SYMBIAN

    91     

    92     return eventFiltered;

    93 }

    94 

    95 

    96 /*!

    97   DialpadKeySequenceEventFilter::preValidateKeySequence.

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

    99  */

   100 bool DialpadKeySequenceEventFilter::preValidateKeySequence(

   101     const QString &sequence)

   102 {

   103     const int KMinimumLength = 4;

   104     bool isValid = false;

   105     

   106     int lengthOfSequence = sequence.length();

   107     if (KMinimumLength <= lengthOfSequence) {

   108         isValid = 

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

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

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

   112     }

   113     

   114     return isValid;

   115 }