1 /******************************************************************************

     2  *

     3  * 

     4  *

     5  * Copyright (C) 1997-2007 by Dimitri van Heesch.

     6  *

     7  * Permission to use, copy, modify, and distribute this software and its

     8  * documentation under the terms of the GNU General Public License is hereby 

     9  * granted. No representations are made about the suitability of this software 

    10  * for any purpose. It is provided "as is" without express or implied warranty.

    11  * See the GNU General Public License for more details.

    12  *

    13  */

    14 

    15 #include "inputbool.h"

    16 #include "helplabel.h"

    17 #include <QtGui>

    18 

    19 InputBool::InputBool( QGridLayout *layout, int &row, 

    20                       const QString &id, bool checked,

    21                       const QString &docs )

    22   : m_default(checked), m_docs(docs), m_id(id)

    23 {

    24   m_lab = new HelpLabel(id);

    25   m_cb = new QCheckBox;

    26   layout->addWidget(m_lab,row, 0);

    27   layout->addWidget(m_cb,row, 1);

    28   m_enabled = true;

    29   m_state=!checked; // force update

    30   setValue(checked);

    31   connect( m_cb, SIGNAL(toggled(bool)), SLOT(setValue(bool)) );

    32   connect( m_lab, SIGNAL(enter()), SLOT(help()) );

    33   connect( m_lab, SIGNAL(reset()), SLOT(reset()) );

    34   row++;

    35 }

    36 

    37 void InputBool::help()

    38 {

    39   showHelp(this);

    40 }

    41 

    42 void InputBool::setEnabled(bool b)

    43 { 

    44   m_enabled = b;

    45   m_cb->setEnabled(b); 

    46   updateDependencies();

    47 }

    48 

    49 void InputBool::updateDependencies()

    50 {

    51   for (int i=0;i<m_dependencies.count();i++)

    52   {

    53     m_dependencies[i]->setEnabled(m_enabled && m_state);

    54   }

    55 }

    56 

    57 void InputBool::setValue( bool s )

    58 {

    59   if (m_state!=s) 

    60   {

    61     m_state=s;

    62     updateDefault();

    63     updateDependencies();

    64     m_cb->setChecked( s );

    65     m_value = m_state;

    66     emit changed();

    67   }

    68 }

    69 

    70 void InputBool::updateDefault()

    71 {

    72   if (m_state==m_default)

    73   {

    74     m_lab->setText(QString::fromAscii("<qt>")+m_id+QString::fromAscii("</qt"));

    75   }

    76   else

    77   {

    78     m_lab->setText(QString::fromAscii("<qt><font color='red'>")+m_id+QString::fromAscii("</font></qt>"));

    79   }

    80 }

    81 

    82 QVariant &InputBool::value()

    83 {

    84   return m_value;

    85 }

    86 

    87 void InputBool::update()

    88 {

    89   QString v = m_value.toString().toLower();

    90   m_state = (v==QString::fromAscii("yes")  || 

    91              v==QString::fromAscii("true") || 

    92              v==QString::fromAscii("1"));

    93   m_cb->setChecked( m_state );

    94   updateDefault();

    95   updateDependencies();

    96 }

    97 

    98 void InputBool::reset()

    99 {

   100   setValue(m_default);

   101 }

   102 

   103 void InputBool::writeValue(QTextStream &t,QTextCodec *codec)

   104 {

   105   if (m_state) 

   106     t << codec->fromUnicode(QString::fromAscii("YES")); 

   107   else 

   108     t << codec->fromUnicode(QString::fromAscii("NO"));

   109 }

   110