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 <QVBoxLayout>
  21 #include <QTextEdit>
  22 #include <qlabel.h>
  23 #define y2log_component "qt-ui"
  24 #include <ycp/y2log.h>
  25
  26 using std::max;
  27
  28 #include "utf8.h"
  29 #include "YQUI.h"
  30 #include "YEvent.h"
  31 #include "YQMultiLineEdit.h"
  32 #include "YQSignalBlocker.h"
  33 #include "YQWidgetCaption.h"
  34
  35
  36 YQMultiLineEdit::YQMultiLineEdit( YWidget * parent, const string & label )
  37     : QFrame( (QWidget *) parent->widgetRep() )
  38     , YMultiLineEdit( parent, label )
  39 {
  40     QVBoxLayout* layout = new QVBoxLayout( this );
  41     setLayout( layout );
  42
  43     setWidgetRep( this );
  44     layout->setSpacing( YQWidgetSpacing );
  45     layout->setMargin ( YQWidgetMargin  );
  46
  47     _caption = new YQWidgetCaption( this, label );
  48     YUI_CHECK_NEW( _caption );
  49     layout->addWidget( _caption );
  50
  51     _qt_textEdit = new QTextEdit( this );
  52     YUI_CHECK_NEW( _qt_textEdit );
  53     layout->addWidget( _qt_textEdit );
  54
  55     //_qt_textEdit->setTextFormat( Qt::PlainText );
  56     _qt_textEdit->setSizePolicy( QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding ) );
  57
  58     _caption->setBuddy( _qt_textEdit );
  59
  60     connect( _qt_textEdit,      SIGNAL( textChanged( void ) ),
  61              this,              SLOT  ( changed    ( void ) ) );
  62 }
  63
  64
  65 YQMultiLineEdit::~YQMultiLineEdit()
  66 {
  67     // NOP
  68 }
  69
  70
  71 string YQMultiLineEdit::value()
  72 {
  73     return toUTF8( _qt_textEdit->document()->toPlainText() );
  74 }
  75
  76
  77 void YQMultiLineEdit::setValue( const string & text )
  78 {
  79     YQSignalBlocker sigBlocker( _qt_textEdit );
  80
  81     _qt_textEdit->setText( fromUTF8( text ) );
  82 }
  83
  84
  85 void YQMultiLineEdit::setLabel( const string & label )
  86 {
  87     _caption->setText( label );
  88     YMultiLineEdit::setLabel( label );
  89 }
  90
  91
  92 void YQMultiLineEdit::setInputMaxLength( int newMaxLength )
  93 {
  94     YMultiLineEdit::setInputMaxLength( newMaxLength );
  95
  96     QString text = _qt_textEdit->document()->toPlainText();
  97
  98     if ( (int) text.length() > inputMaxLength() )
  99     {
 100         text.truncate( inputMaxLength() );
 101         _qt_textEdit->setText(text);
 102     }
 103 }
 104
 105
 106 void YQMultiLineEdit::enforceMaxInputLength()
 107 {
 108 #if FIXME
 109     if ( inputMaxLength() >= 0 && _qt_textEdit->length() > inputMaxLength() )
 110     {
 111         int index;
 112         int para;
 113
 114         _qt_textEdit->getCursorPosition( &para, &index);
 115
 116         QString text = _qt_textEdit->document()->toPlainText();
 117
 118         int pos = 0; // current positon in text
 119         int section =0; // section in text;
 120         // iterate over the string
 121
 122         while ( pos != (int) text.length()+1 )
 123         {
 124             // we reached the paragraph where the user entered
 125             // a character
 126             if ( section == para )
 127             {
 128                 // remove that character
 129                 text.remove( pos+index-1, 1 );
 130                 break;
 131             }
 132
 133             // new paragraph begins
 134             if ( text[pos] == '\n' )
 135                 section++;
 136
 137             pos++;
 138         }
 139
 140         _qt_textEdit->setText( text );
 141
 142         // user removed a paragraph
 143         if ( index == 0 )
 144         {
 145             --para;
 146             // the new index is the end of the previous paragraph
 147             index = _qt_textEdit->paragraphLength(para) + 1;
 148         }
 149
 150         // adjust to new cursor position before the removed character
 151         _qt_textEdit->setCursorPosition( para, index-1 );
 152     }
 153 #endif
 154 }
 155
 156
 157 void YQMultiLineEdit::changed()
 158 {
 159     enforceMaxInputLength();
 160
 161     if ( notify() )
 162         YQUI::ui()->sendEvent( new YWidgetEvent( this, YEvent::ValueChanged ) );
 163 }
 164
 165
 166 void YQMultiLineEdit::setEnabled( bool enabled )
 167 {
 168     _caption->setEnabled( enabled );
 169     _qt_textEdit->setEnabled( enabled );
 170     YWidget::setEnabled( enabled );
 171 }
 172
 173
 174 int YQMultiLineEdit::preferredWidth()
 175 {
 176     return max( 30, sizeHint().width() );
 177 }
 178
 179
 180 int YQMultiLineEdit::preferredHeight()
 181 {
 182     int hintHeight       = defaultVisibleLines() * _qt_textEdit->fontMetrics().lineSpacing();
 183     hintHeight          += _qt_textEdit->frameWidth() * 2 + YQWidgetMargin * 2;
 184
 185     if ( !_caption->isHidden() )
 186         hintHeight += _caption->sizeHint().height() + YQWidgetSpacing;
 187
 188     return max( 10, hintHeight );
 189 }
 190
 191
 192 void YQMultiLineEdit::setSize( int newWidth, int newHeight )
 193 {
 194     resize( newWidth, newHeight );
 195 }
 196
 197
 198 bool YQMultiLineEdit::setKeyboardFocus()
 199 {
 200     _qt_textEdit->setFocus();
 201
 202     return true;
 203 }
 204
 205
 206 #include "YQMultiLineEdit.moc"
 207