src/gtk/listbox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        listbox.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11 #ifdef __GNUG__
  12 #pragma implementation "listbox.h"
  13 #endif
  14
  15 #include "wx/dynarray.h"
  16 #include "wx/listbox.h"
  17 #include "wx/utils.h"
  18 #include "wx/intl.h"
  19 #include "wx/checklst.h"
  20
  21 #if wxUSE_DRAG_AND_DROP
  22 #include "wx/dnd.h"
  23 #endif
  24
  25 #include "gdk/gdk.h"
  26 #include "gtk/gtk.h"
  27
  28 //-------------------------------------------------------------------------
  29 // conditional compilation
  30 //-------------------------------------------------------------------------
  31
  32 #if (GTK_MINOR_VERSION == 1)
  33 #if (GTK_MICRO_VERSION >= 5)
  34 #define NEW_GTK_SCROLL_CODE
  35 #endif
  36 #endif
  37
  38 //-----------------------------------------------------------------------------
  39 // data
  40 //-----------------------------------------------------------------------------
  41
  42 extern bool   g_blockEventsOnDrag;
  43 extern bool   g_blockEventsOnScroll;
  44
  45 //-----------------------------------------------------------------------------
  46 // "button_press_event"
  47 //-----------------------------------------------------------------------------
  48
  49 static gint
  50 gtk_listbox_button_press_callback( GtkWidget *widget, GdkEventButton *gdk_event, wxListBox *listbox )
  51 {
  52     if (g_blockEventsOnDrag) return FALSE;
  53     if (g_blockEventsOnScroll) return FALSE;
  54
  55     if (!listbox->HasVMT()) return FALSE;
  56
  57     int sel = listbox->GetIndex( widget );
  58
  59     if ((listbox->m_hasCheckBoxes) && (gdk_event->x < 15) && (gdk_event->type != GDK_2BUTTON_PRESS))
  60     {
  61         wxCheckListBox *clb = (wxCheckListBox *)listbox;
  62
  63         clb->Check( sel, !clb->IsChecked(sel) );
  64
  65         wxCommandEvent event( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, listbox->GetId() );
  66         event.SetEventObject( listbox );
  67         event.SetInt( sel );
  68         listbox->GetEventHandler()->ProcessEvent( event );
  69     }
  70
  71     if (gdk_event->type == GDK_2BUTTON_PRESS)
  72     {
  73         wxCommandEvent event( wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, listbox->GetId() );
  74         event.SetEventObject( listbox );
  75         event.SetInt( sel );
  76         listbox->GetEventHandler()->ProcessEvent( event );
  77     }
  78
  79     return FALSE;
  80 }
  81
  82 //-----------------------------------------------------------------------------
  83 // "key_press_event"
  84 //-----------------------------------------------------------------------------
  85
  86 static gint
  87 gtk_listbox_key_press_callback( GtkWidget *widget, GdkEventKey *gdk_event, wxListBox *listbox )
  88 {
  89     if (g_blockEventsOnDrag) return FALSE;
  90
  91     if (!listbox->HasVMT()) return FALSE;
  92
  93     if (gdk_event->keyval != ' ') return FALSE;
  94
  95     int sel = listbox->GetIndex( widget );
  96
  97     wxCheckListBox *clb = (wxCheckListBox *)listbox;
  98
  99     clb->Check( sel, !clb->IsChecked(sel) );
 100
 101     wxCommandEvent event( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, listbox->GetId() );
 102     event.SetEventObject( listbox );
 103     event.SetInt( sel );
 104     listbox->GetEventHandler()->ProcessEvent( event );
 105
 106     return FALSE;
 107 }
 108
 109 //-----------------------------------------------------------------------------
 110 // "select" and "deselect"
 111 //-----------------------------------------------------------------------------
 112
 113 static void gtk_listitem_select_callback( GtkWidget *WXUNUSED(widget), wxListBox *listbox )
 114 {
 115     if (!listbox->HasVMT()) return;
 116     if (g_blockEventsOnDrag) return;
 117
 118     wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, listbox->GetId() );
 119
 120     wxArrayInt aSelections;
 121     int count = listbox->GetSelections(aSelections);
 122     if ( count > 0 )
 123     {
 124         event.m_commandInt = aSelections[0] ;
 125         event.m_clientData = listbox->GetClientData( event.m_commandInt );
 126         wxString str(listbox->GetString(event.m_commandInt));
 127         if (str != "") event.m_commandString = copystring((char *)(const char *)str);
 128     }
 129     else
 130     {
 131         event.m_commandInt = -1 ;
 132         event.m_commandString = copystring("") ;
 133     }
 134
 135     event.SetEventObject( listbox );
 136
 137     listbox->GetEventHandler()->ProcessEvent( event );
 138     if (event.m_commandString) delete[] event.m_commandString ;
 139 }
 140
 141 //-----------------------------------------------------------------------------
 142 // wxListBox
 143 //-----------------------------------------------------------------------------
 144
 145 IMPLEMENT_DYNAMIC_CLASS(wxListBox,wxControl)
 146
 147 wxListBox::wxListBox()
 148 {
 149     m_list = (GtkList *) NULL;
 150     m_hasCheckBoxes = FALSE;
 151 }
 152
 153 bool wxListBox::Create( wxWindow *parent, wxWindowID id,
 154                         const wxPoint &pos, const wxSize &size,
 155                         int n, const wxString choices[],
 156                         long style, const wxValidator& validator, const wxString &name )
 157 {
 158     m_needParent = TRUE;
 159     m_acceptsFocus = TRUE;
 160
 161     PreCreation( parent, id, pos, size, style, name );
 162
 163     SetValidator( validator );
 164
 165     m_widget = gtk_scrolled_window_new( (GtkAdjustment*) NULL, (GtkAdjustment*) NULL );
 166     gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
 167       GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 168
 169     m_list = GTK_LIST( gtk_list_new() );
 170
 171     GtkSelectionMode mode = GTK_SELECTION_BROWSE;
 172     if (style & wxLB_MULTIPLE)
 173         mode = GTK_SELECTION_MULTIPLE;
 174     else if (style & wxLB_EXTENDED)
 175         mode = GTK_SELECTION_EXTENDED;
 176
 177     gtk_list_set_selection_mode( GTK_LIST(m_list), mode );
 178
 179 #ifdef NEW_GTK_SCROLL_CODE
 180     gtk_scrolled_window_add_with_viewport( GTK_SCROLLED_WINDOW(m_widget), GTK_WIDGET(m_list) );
 181 #else
 182     gtk_container_add( GTK_CONTAINER(m_widget), GTK_WIDGET(m_list) );
 183 #endif
 184
 185 #ifdef __WXDEBUG__
 186     debug_focus_in( m_widget, "wxListBox::m_widget", name );
 187
 188     debug_focus_in( GTK_WIDGET(m_list), "wxListBox::m_list", name );
 189
 190     GtkScrolledWindow *s_window = GTK_SCROLLED_WINDOW(m_widget);
 191
 192     debug_focus_in( s_window->hscrollbar, "wxWindow::hsrcollbar", name );
 193     debug_focus_in( s_window->vscrollbar, "wxWindow::vsrcollbar", name );
 194
 195 #ifdef NEW_GTK_SCROLL_CODE
 196     GtkViewport *viewport = GTK_VIEWPORT(s_window->child);
 197 #else
 198     GtkViewport *viewport = GTK_VIEWPORT(s_window->viewport);
 199 #endif
 200
 201     debug_focus_in( GTK_WIDGET(viewport), "wxWindow::viewport", name );
 202 #endif
 203
 204     gtk_widget_show( GTK_WIDGET(m_list) );
 205
 206     wxSize newSize = size;
 207     if (newSize.x == -1) newSize.x = 100;
 208     if (newSize.y == -1) newSize.y = 110;
 209     SetSize( newSize.x, newSize.y );
 210
 211     for (int i = 0; i < n; i++)
 212     {
 213         m_clientDataList.Append( (wxObject*) NULL );
 214         m_clientObjectList.Append( (wxObject*) NULL );
 215
 216         GtkWidget *list_item;
 217
 218         if (m_hasCheckBoxes)
 219         {
 220             wxString str = "[-] ";
 221             str += choices[i];
 222             list_item = gtk_list_item_new_with_label( str );
 223         }
 224         else
 225         {
 226             list_item = gtk_list_item_new_with_label( choices[i] );
 227         }
 228
 229 #ifdef __WXDEBUG__
 230         debug_focus_in( list_item, "wxListBox::list_item", name );
 231 #endif
 232
 233         gtk_container_add( GTK_CONTAINER(m_list), list_item );
 234
 235         gtk_signal_connect( GTK_OBJECT(list_item), "select",
 236           GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 237
 238         if (style & wxLB_MULTIPLE)
 239             gtk_signal_connect( GTK_OBJECT(list_item), "deselect",
 240               GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 241
 242         if (m_hasCheckBoxes)
 243         {
 244             gtk_signal_connect( GTK_OBJECT(list_item),
 245                                 "button_press_event",
 246                                 (GtkSignalFunc)gtk_listbox_button_press_callback,
 247                                 (gpointer) this );
 248         }
 249
 250         gtk_signal_connect( GTK_OBJECT(list_item),
 251                             "key_press_event",
 252                             (GtkSignalFunc)gtk_listbox_key_press_callback,
 253                             (gpointer)this );
 254
 255         ConnectWidget( list_item );
 256
 257         gtk_widget_show( list_item );
 258     }
 259
 260     m_parent->AddChild( this );
 261
 262     (m_parent->m_insertCallback)( m_parent, this );
 263
 264     PostCreation();
 265
 266     gtk_widget_realize( GTK_WIDGET(m_list) );
 267
 268     SetBackgroundColour( parent->GetBackgroundColour() );
 269     SetForegroundColour( parent->GetForegroundColour() );
 270
 271     Show( TRUE );
 272
 273     return TRUE;
 274 }
 275
 276 wxListBox::~wxListBox()
 277 {
 278     Clear();
 279 }
 280
 281 void wxListBox::AppendCommon( const wxString &item )
 282 {
 283     wxCHECK_RET( m_list != NULL, "invalid listbox" );
 284
 285     GtkWidget *list_item;
 286
 287     if (m_hasCheckBoxes)
 288     {
 289         wxString str = "[-] ";
 290         str += item;
 291         list_item = gtk_list_item_new_with_label( str );
 292     }
 293     else
 294     {
 295         list_item = gtk_list_item_new_with_label( item );
 296     }
 297
 298     gtk_signal_connect( GTK_OBJECT(list_item), "select",
 299       GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 300
 301     if (GetWindowStyleFlag() & wxLB_MULTIPLE)
 302         gtk_signal_connect( GTK_OBJECT(list_item), "deselect",
 303           GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 304
 305     gtk_container_add( GTK_CONTAINER(m_list), list_item );
 306
 307     if (m_widgetStyle) ApplyWidgetStyle();
 308
 309     if (m_hasCheckBoxes)
 310     {
 311             gtk_signal_connect( GTK_OBJECT(list_item),
 312                                 "button_press_event",
 313                                 (GtkSignalFunc)gtk_listbox_button_press_callback,
 314                                 (gpointer) this );
 315     }
 316
 317     gtk_signal_connect( GTK_OBJECT(list_item),
 318                         "key_press_event",
 319                         (GtkSignalFunc)gtk_listbox_key_press_callback,
 320                         (gpointer)this );
 321
 322     gtk_widget_show( list_item );
 323
 324     ConnectWidget( list_item );
 325
 326 #if wxUSE_DRAG_AND_DROP
 327 #ifndef NEW_GTK_DND_CODE
 328     if (m_dropTarget) m_dropTarget->RegisterWidget( list_item );
 329 #endif
 330 #endif
 331 }
 332
 333 void wxListBox::Append( const wxString &item )
 334 {
 335     m_clientDataList.Append( (wxObject*) NULL );
 336     m_clientObjectList.Append( (wxObject*) NULL );
 337
 338     AppendCommon( item );
 339 }
 340
 341 void wxListBox::Append( const wxString &item, void *clientData )
 342 {
 343     m_clientDataList.Append( (wxObject*) clientData );
 344     m_clientObjectList.Append( (wxObject*) NULL );
 345
 346     AppendCommon( item );
 347 }
 348
 349 void wxListBox::Append( const wxString &item, wxClientData *clientData )
 350 {
 351     m_clientObjectList.Append( (wxObject*) clientData );
 352     m_clientDataList.Append( (wxObject*) NULL );
 353
 354     AppendCommon( item );
 355 }
 356
 357 void wxListBox::SetClientData( int n, void* clientData )
 358 {
 359     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 360
 361     wxNode *node = m_clientDataList.Nth( n );
 362     if (!node) return;
 363
 364     node->SetData( (wxObject*) clientData );
 365 }
 366
 367 void* wxListBox::GetClientData( int n )
 368 {
 369     wxCHECK_MSG( m_widget != NULL, NULL, "invalid combobox" );
 370
 371     wxNode *node = m_clientDataList.Nth( n );
 372     if (!node) return NULL;
 373
 374     return node->Data();
 375 }
 376
 377 void wxListBox::SetClientObject( int n, wxClientData* clientData )
 378 {
 379     wxCHECK_RET( m_widget != NULL, "invalid combobox" );
 380
 381     wxNode *node = m_clientObjectList.Nth( n );
 382     if (!node) return;
 383
 384     wxClientData *cd = (wxClientData*) node->Data();
 385     if (cd) delete cd;
 386
 387     node->SetData( (wxObject*) clientData );
 388 }
 389
 390 wxClientData* wxListBox::GetClientObject( int n )
 391 {
 392     wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, "invalid combobox" );
 393
 394     wxNode *node = m_clientObjectList.Nth( n );
 395     if (!node) return (wxClientData*) NULL;
 396
 397     return (wxClientData*) node->Data();
 398 }
 399
 400 void wxListBox::Clear()
 401 {
 402     wxCHECK_RET( m_list != NULL, "invalid listbox" );
 403
 404     gtk_list_clear_items( m_list, 0, Number() );
 405
 406     wxNode *node = m_clientObjectList.First();
 407     while (node)
 408     {
 409         wxClientData *cd = (wxClientData*)node->Data();
 410         if (cd) delete cd;
 411         node = node->Next();
 412     }
 413     m_clientObjectList.Clear();
 414
 415     m_clientDataList.Clear();
 416 }
 417
 418 void wxListBox::Delete( int n )
 419 {
 420     wxCHECK_RET( m_list != NULL, "invalid listbox" );
 421
 422     GList *child = g_list_nth( m_list->children, n );
 423
 424     wxCHECK_RET( child, "wrong listbox index" );
 425
 426     GList *list = g_list_append( (GList*) NULL, child->data );
 427     gtk_list_remove_items( m_list, list );
 428     g_list_free( list );
 429
 430     wxNode *node = m_clientObjectList.Nth( n );
 431     if (node)
 432     {
 433         wxClientData *cd = (wxClientData*)node->Data();
 434         if (cd) delete cd;
 435         m_clientObjectList.DeleteNode( node );
 436     }
 437
 438     node = m_clientDataList.Nth( n );
 439     if (node)
 440     {
 441         m_clientDataList.DeleteNode( node );
 442     }
 443 }
 444
 445 void wxListBox::Deselect( int n )
 446 {
 447     wxCHECK_RET( m_list != NULL, "invalid listbox" );
 448
 449     gtk_list_unselect_item( m_list, n );
 450 }
 451
 452 int wxListBox::FindString( const wxString &item ) const
 453 {
 454     wxCHECK_MSG( m_list != NULL, -1, "invalid listbox" );
 455
 456     GList *child = m_list->children;
 457     int count = 0;
 458     while (child)
 459     {
 460         GtkBin *bin = GTK_BIN( child->data );
 461         GtkLabel *label = GTK_LABEL( bin->child );
 462
 463         wxString str = label->label;
 464         if (m_hasCheckBoxes) str.Remove( 0, 4 );
 465
 466         if (str == item) return count;
 467
 468         count++;
 469         child = child->next;
 470     }
 471
 472   // it's not an error if the string is not found -> no wxCHECK
 473
 474   return -1;
 475 }
 476
 477 int wxListBox::GetSelection() const
 478 {
 479     wxCHECK_MSG( m_list != NULL, -1, "invalid listbox" );
 480
 481     GList *child = m_list->children;
 482     int count = 0;
 483     while (child)
 484     {
 485         if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED) return count;
 486         count++;
 487         child = child->next;
 488     }
 489     return -1;
 490 }
 491
 492 int wxListBox::GetSelections( wxArrayInt& aSelections ) const
 493 {
 494     wxCHECK_MSG( m_list != NULL, -1, "invalid listbox" );
 495
 496     // get the number of selected items first
 497     GList *child = m_list->children;
 498     int count = 0;
 499     for (child = m_list->children; child != NULL; child = child->next)
 500     {
 501         if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED)
 502             count++;
 503     }
 504
 505     aSelections.Empty();
 506
 507     if (count > 0)
 508     {
 509         // now fill the list
 510         aSelections.Alloc(count); // optimization attempt
 511         int i = 0;
 512         for (child = m_list->children; child != NULL; child = child->next, i++)
 513         {
 514             if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED)
 515                  aSelections.Add(i);
 516         }
 517     }
 518
 519     return count;
 520 }
 521
 522 wxString wxListBox::GetString( int n ) const
 523 {
 524     wxCHECK_MSG( m_list != NULL, "", "invalid listbox" );
 525
 526     GList *child = g_list_nth( m_list->children, n );
 527     if (child)
 528     {
 529         GtkBin *bin = GTK_BIN( child->data );
 530         GtkLabel *label = GTK_LABEL( bin->child );
 531
 532         wxString str = label->label;
 533         if (m_hasCheckBoxes) str.Remove( 0, 4 );
 534
 535         return str;
 536     }
 537     wxFAIL_MSG("wrong listbox index");
 538     return "";
 539 }
 540
 541 wxString wxListBox::GetStringSelection() const
 542 {
 543     wxCHECK_MSG( m_list != NULL, "", "invalid listbox" );
 544
 545     GList *selection = m_list->selection;
 546     if (selection)
 547     {
 548         GtkBin *bin = GTK_BIN( selection->data );
 549         GtkLabel *label = GTK_LABEL( bin->child );
 550
 551         wxString str = label->label;
 552         if (m_hasCheckBoxes) str.Remove( 0, 4 );
 553
 554         return str;
 555     }
 556
 557     wxFAIL_MSG("no listbox selection available");
 558     return "";
 559 }
 560
 561 int wxListBox::Number()
 562 {
 563     wxCHECK_MSG( m_list != NULL, -1, "invalid listbox" );
 564
 565     GList *child = m_list->children;
 566     int count = 0;
 567     while (child) { count++; child = child->next; }
 568     return count;
 569 }
 570
 571 bool wxListBox::Selected( int n )
 572 {
 573     wxCHECK_MSG( m_list != NULL, FALSE, "invalid listbox" );
 574
 575     GList *target = g_list_nth( m_list->children, n );
 576     if (target)
 577     {
 578         GList *child = m_list->selection;
 579         while (child)
 580         {
 581             if (child->data == target->data) return TRUE;
 582             child = child->next;
 583         }
 584     }
 585     wxFAIL_MSG("wrong listbox index");
 586     return FALSE;
 587 }
 588
 589 void wxListBox::Set( int WXUNUSED(n), const wxString *WXUNUSED(choices) )
 590 {
 591     wxFAIL_MSG("wxListBox::Set not implemented");
 592 }
 593
 594 void wxListBox::SetFirstItem( int WXUNUSED(n) )
 595 {
 596     wxFAIL_MSG("wxListBox::SetFirstItem not implemented");
 597 }
 598
 599 void wxListBox::SetFirstItem( const wxString &WXUNUSED(item) )
 600 {
 601     wxFAIL_MSG("wxListBox::SetFirstItem not implemented");
 602 }
 603
 604 void wxListBox::SetSelection( int n, bool select )
 605 {
 606     wxCHECK_RET( m_list != NULL, "invalid listbox" );
 607
 608     if (select)
 609         gtk_list_select_item( m_list, n );
 610     else
 611         gtk_list_unselect_item( m_list, n );
 612 }
 613
 614 void wxListBox::SetString( int n, const wxString &string )
 615 {
 616     wxCHECK_RET( m_list != NULL, "invalid listbox" );
 617
 618     GList *child = g_list_nth( m_list->children, n );
 619     if (child)
 620     {
 621         GtkBin *bin = GTK_BIN( child->data );
 622         GtkLabel *label = GTK_LABEL( bin->child );
 623
 624         wxString str;
 625         if (m_hasCheckBoxes) str += "[-] ";
 626         str += string;
 627
 628         gtk_label_set( label, str );
 629     }
 630     else
 631     {
 632         wxFAIL_MSG("wrong listbox index");
 633     }
 634 }
 635
 636 void wxListBox::SetStringSelection( const wxString &string, bool select )
 637 {
 638     wxCHECK_RET( m_list != NULL, "invalid listbox" );
 639
 640     SetSelection( FindString(string), select );
 641 }
 642
 643 int wxListBox::GetIndex( GtkWidget *item ) const
 644 {
 645     if (item)
 646     {
 647         GList *child = m_list->children;
 648         int count = 0;
 649         while (child)
 650         {
 651             if (GTK_WIDGET(child->data) == item) return count;
 652             count++;
 653             child = child->next;
 654         }
 655     }
 656     return -1;
 657 }
 658
 659 #if wxUSE_DRAG_AND_DROP
 660 void wxListBox::SetDropTarget( wxDropTarget *dropTarget )
 661 {
 662     wxCHECK_RET( m_list != NULL, "invalid listbox" );
 663
 664 #ifndef NEW_GTK_DND_CODE
 665     if (m_dropTarget)
 666     {
 667         GList *child = m_list->children;
 668         while (child)
 669         {
 670             m_dropTarget->UnregisterWidget( GTK_WIDGET( child->data ) );
 671             child = child->next;
 672         }
 673     }
 674 #endif
 675
 676     wxWindow::SetDropTarget( dropTarget );
 677
 678 #ifndef NEW_GTK_DND_CODE
 679     if (m_dropTarget)
 680     {
 681         GList *child = m_list->children;
 682         while (child)
 683         {
 684             m_dropTarget->RegisterWidget( GTK_WIDGET( child->data ) );
 685             child = child->next;
 686         }
 687     }
 688 #endif
 689 }
 690 #endif
 691
 692 GtkWidget *wxListBox::GetConnectWidget()
 693 {
 694     return GTK_WIDGET(m_list);
 695 }
 696
 697 bool wxListBox::IsOwnGtkWindow( GdkWindow *window )
 698 {
 699     if (wxWindow::IsOwnGtkWindow( window )) return TRUE;
 700
 701     GList *child = m_list->children;
 702     while (child)
 703     {
 704         GtkWidget *bin = GTK_WIDGET( child->data );
 705         if (bin->window == window) return TRUE;
 706         child = child->next;
 707     }
 708
 709     return FALSE;
 710 }
 711
 712 void wxListBox::ApplyWidgetStyle()
 713 {
 714     SetWidgetStyle();
 715
 716     if (m_backgroundColour.Ok())
 717     {
 718         GdkWindow *window = GTK_WIDGET(m_list)->window;
 719         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
 720         gdk_window_set_background( window, m_backgroundColour.GetColor() );
 721         gdk_window_clear( window );
 722     }
 723
 724     GList *child = m_list->children;
 725     while (child)
 726     {
 727         gtk_widget_set_style( GTK_WIDGET(child->data), m_widgetStyle );
 728
 729         GtkBin *bin = GTK_BIN( child->data );
 730         GtkWidget *label = GTK_WIDGET( bin->child );
 731         gtk_widget_set_style( label, m_widgetStyle );
 732
 733         child = child->next;
 734     }
 735 }