us_table.cpp

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#include "us_table.h"
#include "us_gui_settings.h"

US_Table::US_Table( QMap< double, double >& map, 
                          const QString&    type,
                          bool&             change, 
                          QWidget*          parent, 
                          Qt::WindowFlags   f )
   : US_WidgetsDialog( parent, f ), 
     values( map ), 
     changed( change )
{
   setPalette  ( US_GuiSettings::frameColor() );
   setAttribute( Qt::WA_DeleteOnClose );
   
   local = values;

   QVBoxLayout* main = new QVBoxLayout( this );
   main->setSpacing         ( 2 );
   main->setContentsMargins ( 2, 2, 2, 2 );

   QHBoxLayout* edits = new QHBoxLayout;

   QLabel* lb_wl = us_label( tr( "Wavelength:" ) );
   edits->addWidget( lb_wl );

   le_wl = us_lineedit();
   connect( le_wl, SIGNAL( editingFinished() ), SLOT( edited() ) ); 
   edits->addWidget( le_wl );

   QLabel* lb_value = us_label( type );
   edits->addWidget( lb_value );

   le_value = us_lineedit();
   connect( le_value, SIGNAL( editingFinished() ), SLOT( edited() ) ); 
   edits->addWidget( le_value );

   main->addLayout( edits );

   // Create and fill in list widget
   lw_table = us_listwidget();

   main->addWidget( lw_table );
   connect( lw_table, SIGNAL( itemSelectionChanged( void ) ), 
                      SLOT  ( new_row             ( void ) ) );

   connect( lw_table, SIGNAL( itemDoubleClicked   ( QListWidgetItem* ) ), 
                      SLOT  ( delete_row          ( QListWidgetItem* ) ) );

   QBoxLayout* buttons = new QHBoxLayout;

   QPushButton* pb_cancel = us_pushbutton( tr( "Cancel" ) );
   connect( pb_cancel, SIGNAL( clicked() ), SLOT( reject() ) );
   buttons->addWidget( pb_cancel );

   QPushButton* pb_accept = us_pushbutton( tr( "Accept" ) );
   connect( pb_accept, SIGNAL( clicked() ), SLOT( done() ) );
   buttons->addWidget( pb_accept );

   main->addLayout( buttons );

   update();
}

void US_Table::done( void )
{
   if ( values != local )
   {
      values  = local;
      changed = true;
   }

   close();
}

void US_Table::edited( void )
{
   if ( le_wl->text().isEmpty() || le_value->text().isEmpty() ) return;

   double wl    = le_wl   ->text().toDouble();
   double value = le_value->text().toDouble();

   if ( wl < 190.0  || wl > 750.0 )
   {
      QMessageBox::warning( this,
            tr( "Error" ),
            tr( "The wavelength must be in the range of 190-750." ) );
      le_wl   ->clear();
      le_value->clear();
      return;
   }

   if ( value < 0.0 )
   {
      QMessageBox::warning( this,
            tr( "Error" ),
            tr( "The value entered cannot be negative." ) );
      le_wl   ->clear();
      le_value->clear();
      return;
   }

   local.insert( wl, value );
   update();

   lw_table->setCurrentRow( -1 );
}

void US_Table::update( void )
{
   lw_table->clear();

   QList< double > keys = local.keys();
   qSort( keys );

   for ( int i = 0; i < keys.size(); i++ )
   {
      QString wavelength = QString::number( keys[ i ], 'f', 1 );
      QString value      = QString::number( local[ keys[ i ] ], 'f', 4 );

      lw_table->addItem( wavelength + " / " + value );
   }
}

void US_Table::new_row( void )
{
   QStringList v = lw_table->currentItem()->text().split( " / " );
   le_wl   ->setText( v[ 0 ] );
   le_value->setText( v[ 1 ] );
}

void US_Table::delete_row( QListWidgetItem* item )
{
   int response = QMessageBox::question( this,
         tr( "Delete Entry?" ),
         tr( "Delete the current entry?" ),
         QMessageBox::Yes, QMessageBox::Cancel );

   if ( response == QMessageBox::Yes ) 
   {
      QStringList v = item->text().split( " / " );
      local.remove( v[ 0 ].toDouble() );
      delete item;
   }
}