workspace/khotkeys/shared/khlistview.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 _KHLISTVIEW_CPP_
  12
  13 #include "khlistview.h"
  14
  15 #include <kdebug.h>
  16 #include <QDropEvent>
  17
  18 namespace KHotKeys
  19 {
  20
  21 KHListView::KHListView( QWidget* parent_P )
  22     : K3ListView( parent_P ), saved_current_item( NULL ),
  23         in_clear( false ), ignore( false ), force_select( false )
  24     {
  25     insert_select_timer.setSingleShot( true );
  26
  27     connect( this, SIGNAL( selectionChanged( Q3ListViewItem* )),
  28         SLOT( slot_selection_changed( Q3ListViewItem* )));
  29     connect( this, SIGNAL( currentChanged( Q3ListViewItem* )),
  30         SLOT( slot_current_changed( Q3ListViewItem* )));
  31     // CHECKME grrr
  32     connect( this, SIGNAL( selectionChanged()),
  33         SLOT( slot_selection_changed()));
  34     connect( &insert_select_timer, SIGNAL( timeout()),
  35         SLOT( slot_insert_select()));
  36     }
  37
  38 void KHListView::slot_selection_changed()
  39     {
  40     if( ignore )
  41         return;
  42     if( saved_current_item == NULL )
  43         slot_selection_changed( NULL );
  44     else if( !saved_current_item->isSelected()) // no way
  45         setSelected( saved_current_item, true );
  46     }
  47
  48 void KHListView::slot_selection_changed( Q3ListViewItem* item_P )
  49     {
  50     if( ignore )
  51         return;
  52     if( item_P == saved_current_item )
  53         return;
  54     saved_current_item = item_P;
  55     setCurrentItem( saved_current_item );
  56     emit current_changed( saved_current_item );
  57     }
  58
  59 void KHListView::slot_current_changed( Q3ListViewItem* item_P )
  60     {
  61     if( ignore )
  62         return;
  63     insert_select_timer.stop();
  64     if( item_P == saved_current_item )
  65         return;
  66     saved_current_item = item_P;
  67     setSelected( saved_current_item, true );
  68     emit current_changed( saved_current_item );
  69     }
  70
  71 void KHListView::clear()
  72     {
  73     in_clear = true;
  74     K3ListView::clear();
  75     in_clear = false;
  76     slot_selection_changed( NULL );
  77     }
  78
  79 void KHListView::insertItem( Q3ListViewItem* item_P )
  80     {
  81     bool set = false;
  82     if( !in_clear )
  83         set = childCount() == 0;
  84     K3ListView::insertItem( item_P );
  85     if( set && force_select )
  86         {
  87         bool block = signalsBlocked();
  88         blockSignals( true );
  89 // SELI tohle spis jen blokovat sebe?
  90         setCurrentItem( item_P );
  91         blockSignals( block );
  92         insert_select_timer.start( 0 );
  93         }
  94     }
  95
  96 void KHListView::clearSelection()
  97     {
  98     K3ListView::clearSelection();
  99     slot_current_changed( currentItem());
 100     }
 101
 102 // items are often inserted using the QListViewItem constructor,
 103 // which means that a derived class are not yet fully created
 104 void KHListView::slot_insert_select()
 105     {
 106     if( ignore )
 107         return;
 108     slot_current_changed( currentItem());
 109     }
 110
 111 void KHListView::contentsDropEvent( QDropEvent* e )
 112     {
 113     bool save_ignore = ignore;
 114     ignore = true;
 115     K3ListView::contentsDropEvent( e );
 116     ignore = save_ignore;
 117     }
 118
 119 } // namespace KHotKeys
 120
 121 #include "khlistview.moc"