src/YQMultiLineEdit.cc

   1 /*---------------------------------------------------------------------\
   2 |                                                                      |
   3 |                      __   __    ____ _____ ____                      |
   4 |                      \ \ / /_ _/ ___|_   _|___ \                     |
   5 |                       \ V / _` \___ \ | |   __) |                    |
   6 |                        | | (_| |___) || |  / __/                     |
   7 |                        |_|\__,_|____/ |_| |_____|                    |
   8 |                                                                      |
   9 |                               core system                            |
  10 |                                                        (C) SuSE GmbH |
  11 \----------------------------------------------------------------------/
  12
  13   File:       YQMultiLineEdit.cc
  14
  15   Author:     Stefan Hundhammer <sh@suse.de>
  16
  17 /-*/
  18
  19
  20 #include <qmultilineedit.h>
  21 #include <qlabel.h>
  22 #define y2log_component "qt-ui"
  23 #include <ycp/y2log.h>
  24
  25 using std::max;
  26
  27 #include "utf8.h"
  28 #include "YQUI.h"
  29 #include "YEvent.h"
  30 #include "YQMultiLineEdit.h"
  31 #include "YQSignalBlocker.h"
  32 #include "YQWidgetCaption.h"
  33
  34
  35 YQMultiLineEdit::YQMultiLineEdit( YWidget * parent, const string & label )
  36     : QVBox( (QWidget *) parent->widgetRep() )
  37     , YMultiLineEdit( parent, label )
  38 {
  39     setWidgetRep( this );
  40     setSpacing( YQWidgetSpacing );
  41     setMargin ( YQWidgetMargin  );
  42
  43     _caption = new YQWidgetCaption( this, label );
  44     YUI_CHECK_NEW( _caption );
  45
  46     _qt_textEdit = new QTextEdit( this );
  47     YUI_CHECK_NEW( _qt_textEdit );
  48
  49     _qt_textEdit->setTextFormat( Qt::PlainText );
  50     _qt_textEdit->setSizePolicy( QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding ) );
  51
  52     _caption->setBuddy( _qt_textEdit );
  53
  54     connect( _qt_textEdit,      SIGNAL( textChanged( void ) ),
  55              this,              SLOT  ( changed    ( void ) ) );
  56 }
  57
  58
  59 YQMultiLineEdit::~YQMultiLineEdit()
  60 {
  61     // NOP
  62 }
  63
  64
  65 string YQMultiLineEdit::value()
  66 {
  67     return toUTF8( _qt_textEdit->text() );
  68 }
  69
  70
  71 void YQMultiLineEdit::setValue( const string & text )
  72 {
  73     YQSignalBlocker sigBlocker( _qt_textEdit );
  74
  75     _qt_textEdit->setText( fromUTF8( text ) );
  76 }
  77
  78
  79 void YQMultiLineEdit::setLabel( const string & label )
  80 {
  81     _caption->setText( label );
  82     YMultiLineEdit::setLabel( label );
  83 }
  84
  85
  86 void YQMultiLineEdit::setInputMaxLength( int newMaxLength )
  87 {
  88     YMultiLineEdit::setInputMaxLength( newMaxLength );
  89
  90     QString text = _qt_textEdit->text();
  91
  92     if ( (int) text.length() > inputMaxLength() )
  93     {
  94         text.truncate( inputMaxLength() );
  95         _qt_textEdit->setText(text);
  96     }
  97 }
  98
  99
 100 void YQMultiLineEdit::enforceMaxInputLength()
 101 {
 102     if ( inputMaxLength() >= 0 && _qt_textEdit->length() > inputMaxLength() )
 103     {
 104         int index;
 105         int para;
 106
 107         _qt_textEdit->getCursorPosition( &para, &index);
 108
 109         QString text = _qt_textEdit->text();
 110
 111         int pos = 0; // current positon in text
 112         int section =0; // section in text;
 113         // iterate over the string
 114
 115         while ( pos != (int) text.length()+1 )
 116         {
 117             // we reached the paragraph where the user entered
 118             // a character
 119             if ( section == para )
 120             {
 121                 // remove that character
 122                 text.remove( pos+index-1, 1 );
 123                 break;
 124             }
 125
 126             // new paragraph begins
 127             if ( text[pos] == '\n' )
 128                 section++;
 129
 130             pos++;
 131         }
 132
 133         _qt_textEdit->setText( text );
 134
 135         // user removed a paragraph
 136         if ( index == 0 )
 137         {
 138             --para;
 139             // the new index is the end of the previous paragraph
 140             index = _qt_textEdit->paragraphLength(para) + 1;
 141         }
 142
 143         // adjust to new cursor position before the removed character
 144         _qt_textEdit->setCursorPosition( para, index-1 );
 145     }
 146 }
 147
 148
 149 void YQMultiLineEdit::changed()
 150 {
 151     enforceMaxInputLength();
 152
 153     if ( notify() )
 154         YQUI::ui()->sendEvent( new YWidgetEvent( this, YEvent::ValueChanged ) );
 155 }
 156
 157
 158 void YQMultiLineEdit::setEnabled( bool enabled )
 159 {
 160     _caption->setEnabled( enabled );
 161     _qt_textEdit->setEnabled( enabled );
 162     YWidget::setEnabled( enabled );
 163 }
 164
 165
 166 int YQMultiLineEdit::preferredWidth()
 167 {
 168     return max( 30, sizeHint().width() );
 169 }
 170
 171
 172 int YQMultiLineEdit::preferredHeight()
 173 {
 174     int hintHeight       = defaultVisibleLines() * _qt_textEdit->fontMetrics().lineSpacing();
 175     hintHeight          += _qt_textEdit->frameWidth() * 2 + YQWidgetMargin * 2;
 176
 177     if ( _caption->isShown() )
 178         hintHeight += _caption->sizeHint().height() + YQWidgetSpacing;
 179
 180     return max( 10, hintHeight );
 181 }
 182
 183
 184 void YQMultiLineEdit::setSize( int newWidth, int newHeight )
 185 {
 186     resize( newWidth, newHeight );
 187 }
 188
 189
 190 bool YQMultiLineEdit::setKeyboardFocus()
 191 {
 192     _qt_textEdit->setFocus();
 193
 194     return true;
 195 }
 196
 197
 198 #include "YQMultiLineEdit.moc"
 199