workspace/khotkeys/shared/khlistbox.cpp

   1 /****************************************************************************
   2
   3  KHotKeys
   4
   5  Copyright (C) 1999-2002 Lubos Lunak <l.lunak@kde.org>
   6
   7  Distributed under the terms of the GNU General Public License version 2.
   8
   9 ****************************************************************************/
  10
  11 #define _KHLISTBOX_CPP_
  12
  13 #include "khlistbox.h"
  14
  15 #include <kdebug.h>
  16
  17 namespace KHotKeys
  18 {
  19
  20 KHListBox::KHListBox( QWidget* parent_P, const char* name_P )
  21     : QListWidget( parent_P ), saved_current_item( NULL ),
  22         in_clear( false ), force_select( false )
  23     {
  24     setObjectName( name_P );
  25
  26     insert_select_timer.setSingleShot( true );
  27
  28     connect( this, SIGNAL( selectionChanged( QListWidgetItem* )),
  29         SLOT( slot_selection_changed( QListWidgetItem* )));
  30     connect( this, SIGNAL( currentChanged( QListWidgetItem* )),
  31         SLOT( slot_current_changed( QListWidgetItem* )));
  32     // CHECKME grrr
  33     connect( this, SIGNAL( selectionChanged()),
  34         SLOT( slot_selection_changed()));
  35     connect( &insert_select_timer, SIGNAL( timeout()),
  36         SLOT( slot_insert_select()));
  37     }
  38
  39 void KHListBox::slot_selection_changed()
  40     {
  41     if( saved_current_item == NULL )
  42         slot_selection_changed( NULL );
  43     else if( !saved_current_item->isSelected()) // no way
  44         saved_current_item->setSelected( true );
  45     }
  46
  47 void KHListBox::slot_selection_changed( QListWidgetItem* item_P )
  48     {
  49     if( item_P == saved_current_item )
  50         return;
  51     saved_current_item = item_P;
  52     setCurrentItem( saved_current_item );
  53     emit current_changed( saved_current_item );
  54     }
  55
  56 void KHListBox::slot_current_changed( QListWidgetItem* item_P )
  57     {
  58     insert_select_timer.stop();
  59     if( item_P == saved_current_item )
  60         return;
  61     saved_current_item = item_P;
  62     saved_current_item->setSelected( true );
  63     emit current_changed( saved_current_item );
  64     }
  65
  66 // neni virtual :((
  67 void KHListBox::clear()
  68     {
  69     in_clear = true;
  70     QListWidget::clear();
  71     in_clear = false;
  72     slot_selection_changed( NULL );
  73     }
  74
  75
  76 // neni virtual :(( a vubec nefunguje
  77 void KHListBox::insertItem( QListWidgetItem* item_P )
  78     {
  79     bool set = false;
  80     if( !in_clear )
  81         set = count() == 0;
  82     QListWidget::addItem( item_P );
  83     if( set && force_select )
  84         {
  85         bool block = signalsBlocked();
  86         blockSignals( true );
  87         setCurrentItem( item_P );
  88         blockSignals( block );
  89         insert_select_timer.start( 0 );
  90         }
  91     }
  92
  93 // items are often inserted using the QListBoxItem constructor,
  94 // which means that a derived class are not yet fully created
  95 void KHListBox::slot_insert_select()
  96     {
  97     slot_current_changed( item( currentRow()));
  98     }
  99
 100
 101 } // namespace KHotKeys
 102
 103 #include "khlistbox.moc"