apps/konsole/src/HistorySizeDialog.cpp

   1 /*
   2     Copyright 2007-2008 by Robert Knight <robertknight@gmail.com>
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  17     02110-1301  USA.
  18 */
  19
  20 // Own
  21 #include "HistorySizeDialog.h"
  22
  23 // Qt
  24 #include <QtGui/QButtonGroup>
  25 #include <QtGui/QBoxLayout>
  26 #include <QtGui/QLabel>
  27 #include <QtGui/QRadioButton>
  28 #include <QtGui/QSpinBox>
  29 #include <QtGui/QWidget>
  30
  31 // KDE
  32 #include <KLocalizedString>
  33
  34 // Konsole
  35 #include "SessionManager.h"
  36
  37 using namespace Konsole;
  38
  39 HistorySizeDialog::HistorySizeDialog( QWidget* parent )
  40     :  KDialog(parent)
  41     ,  _noHistoryButton(0)
  42     ,  _fixedHistoryButton(0)
  43     ,  _unlimitedHistoryButton(0)
  44     ,  _lineCountBox(0)
  45     ,  _defaultMode(FixedSizeHistory)
  46     ,  _defaultLineCount(1000)
  47 {
  48     // basic dialog properties
  49     setPlainCaption( i18n("Scrollback Options") );
  50     setButtons(  Default | Ok | Cancel );
  51     setDefaultButton(Ok);
  52     setModal( false );
  53
  54     // dialog widgets
  55     QWidget* dialogWidget = new QWidget(this);
  56     setMainWidget(dialogWidget);
  57
  58     QVBoxLayout* dialogLayout = new QVBoxLayout(dialogWidget);
  59
  60     QButtonGroup* modeGroup = new QButtonGroup(this);
  61
  62     _noHistoryButton = new QRadioButton( i18n("No scrollback") );
  63     _fixedHistoryButton = new QRadioButton( i18n("Fixed size scrollback: ") );
  64     _unlimitedHistoryButton = new QRadioButton( i18n("Unlimited scrollback") );
  65
  66     modeGroup->addButton(_noHistoryButton);
  67     modeGroup->addButton(_fixedHistoryButton);
  68     modeGroup->addButton(_unlimitedHistoryButton);
  69
  70     _lineCountBox = new QSpinBox(this);
  71
  72     // minimum lines = 1 ( for 0 lines , "No History" mode should be used instead )
  73     // maximum lines is abritrarily chosen, I do not think it is sensible to allow this
  74     // to be set to a very large figure because that will use large amounts of memory,
  75     // if a very large log is required, "Unlimited History" mode should be used
  76     _lineCountBox->setRange( 1 , 100000 );
  77
  78     // 1000 lines was the default in the KDE 3 series
  79     // using that for now
  80     _lineCountBox->setValue( _defaultLineCount );
  81
  82     _lineCountBox->setSingleStep( _defaultLineCount / 10 );
  83
  84     QLabel* lineCountLabel = new QLabel(i18n("lines"),this);
  85     QHBoxLayout* lineCountLayout = new QHBoxLayout();
  86
  87     _fixedHistoryButton->setFocusProxy(_lineCountBox);
  88
  89     connect( _fixedHistoryButton , SIGNAL(clicked()) , _lineCountBox , SLOT(selectAll()) );
  90     lineCountLayout->addWidget(_fixedHistoryButton);
  91     lineCountLayout->addWidget(_lineCountBox);
  92     lineCountLayout->addWidget(lineCountLabel);
  93
  94     dialogLayout->addWidget(_noHistoryButton);
  95     dialogLayout->addLayout(lineCountLayout);
  96     dialogLayout->addWidget(_unlimitedHistoryButton);
  97
  98     // select the fixed size mode by default
  99     _fixedHistoryButton->click();
 100     _fixedHistoryButton->setFocus( Qt::OtherFocusReason );
 101
 102     connect(this,SIGNAL(defaultClicked()),this,SLOT(useDefaults()));
 103
 104     connect(this,SIGNAL(accepted()),this,SLOT(emitOptionsChanged()));
 105 }
 106
 107 void HistorySizeDialog::emitOptionsChanged()
 108 {
 109     emit optionsChanged( mode() , lineCount() );
 110 }
 111
 112 void HistorySizeDialog::setDefaultMode( HistoryMode mode ) { _defaultMode = mode; }
 113 HistorySizeDialog::HistoryMode HistorySizeDialog::defaultMode() const { return _defaultMode; }
 114 void HistorySizeDialog::setDefaultLineCount( int count ) { _defaultLineCount = count; }
 115 int HistorySizeDialog::defaultLineCount() const { return _defaultLineCount; }
 116
 117 void HistorySizeDialog::useDefaults()
 118 {
 119     setMode( _defaultMode );
 120     setLineCount( _defaultLineCount );
 121 }
 122
 123 void HistorySizeDialog::setMode( HistoryMode mode )
 124 {
 125     if ( mode == NoHistory )
 126     {
 127         _noHistoryButton->setChecked(true);
 128     } else if ( mode == FixedSizeHistory )
 129     {
 130         _fixedHistoryButton->setChecked(true);
 131     } else if ( mode == UnlimitedHistory )
 132     {
 133         _unlimitedHistoryButton->setChecked(true);
 134     }
 135 }
 136
 137 HistorySizeDialog::HistoryMode HistorySizeDialog::mode() const
 138 {
 139     if ( _noHistoryButton->isChecked() )
 140         return NoHistory;
 141     else if ( _fixedHistoryButton->isChecked() )
 142         return FixedSizeHistory;
 143     else if ( _unlimitedHistoryButton->isChecked() )
 144         return UnlimitedHistory;
 145
 146     Q_ASSERT(false);
 147     return NoHistory;
 148 }
 149
 150 int HistorySizeDialog::lineCount() const
 151 {
 152     return _lineCountBox->value();
 153 }
 154
 155 void HistorySizeDialog::setLineCount(int lines)
 156 {
 157     _lineCountBox->setValue(lines);
 158 }
 159
 160
 161 #include "HistorySizeDialog.moc"