src/gtk/combobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        combobox.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation "combobox.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #include "wx/combobox.h"
  18
  19 #if wxUSE_COMBOBOX
  20
  21 #include "wx/settings.h"
  22 #include "wx/intl.h"
  23
  24 #include "wx/textctrl.h"    // for wxEVT_COMMAND_TEXT_UPDATED
  25
  26 #include "wx/gtk/private.h"
  27
  28 //-----------------------------------------------------------------------------
  29 // idle system
  30 //-----------------------------------------------------------------------------
  31
  32 extern void wxapp_install_idle_handler();
  33 extern bool g_isIdle;
  34
  35 //-----------------------------------------------------------------------------
  36 // data
  37 //-----------------------------------------------------------------------------
  38
  39 extern bool   g_blockEventsOnDrag;
  40
  41 //-----------------------------------------------------------------------------
  42 // "select-child" - click/cursor get select-child, changed, select-child
  43 //-----------------------------------------------------------------------------
  44
  45 static void
  46 gtk_combo_select_child_callback( GtkList *WXUNUSED(list), GtkWidget *WXUNUSED(widget), wxComboBox *combo )
  47 {
  48     if (g_isIdle) wxapp_install_idle_handler();
  49
  50     if (!combo->m_hasVMT) return;
  51
  52     if (g_blockEventsOnDrag) return;
  53
  54     int curSelection = combo->GetSelection();
  55
  56     if (combo->m_prevSelection != curSelection)
  57     {
  58         GtkWidget *list = GTK_COMBO(combo->m_widget)->list;
  59         gtk_list_unselect_item( GTK_LIST(list), combo->m_prevSelection );
  60     }
  61     combo->m_prevSelection = curSelection;
  62
  63     wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
  64     event.SetInt( curSelection );
  65     event.SetString( combo->GetStringSelection() );
  66     event.SetEventObject( combo );
  67
  68     combo->GetEventHandler()->ProcessEvent( event );
  69 }
  70
  71 //-----------------------------------------------------------------------------
  72 //  "changed" - typing and list item matches get changed, select-child
  73 //              if it doesn't match an item then just get a single changed
  74 //-----------------------------------------------------------------------------
  75
  76 static void
  77 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
  78 {
  79     if (g_isIdle) wxapp_install_idle_handler();
  80
  81     if (!combo->m_hasVMT) return;
  82
  83     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
  84     event.SetString( combo->GetValue() );
  85     event.SetEventObject( combo );
  86     combo->GetEventHandler()->ProcessEvent( event );
  87 }
  88
  89 static void
  90 gtk_dummy_callback(GtkEntry *WXUNUSED(entry), GtkCombo *WXUNUSED(combo))
  91 {
  92 }
  93
  94 //-----------------------------------------------------------------------------
  95 // wxComboBox
  96 //-----------------------------------------------------------------------------
  97
  98 IMPLEMENT_DYNAMIC_CLASS(wxComboBox,wxControl)
  99
 100 BEGIN_EVENT_TABLE(wxComboBox, wxControl)
 101     EVT_SIZE(wxComboBox::OnSize)
 102     EVT_CHAR(wxComboBox::OnChar)
 103 END_EVENT_TABLE()
 104
 105 bool wxComboBox::Create( wxWindow *parent, wxWindowID id, const wxString& value,
 106                          const wxPoint& pos, const wxSize& size,
 107                          int n, const wxString choices[],
 108                          long style, const wxValidator& validator,
 109                          const wxString& name )
 110 {
 111     m_alreadySent = FALSE;
 112     m_needParent = TRUE;
 113     m_acceptsFocus = TRUE;
 114     m_prevSelection = 0;
 115
 116     if (!PreCreation( parent, pos, size ) ||
 117         !CreateBase( parent, id, pos, size, style, validator, name ))
 118     {
 119         wxFAIL_MSG( wxT("wxComboBox creation failed") );
 120         return FALSE;
 121     }
 122
 123     m_widget = gtk_combo_new();
 124     GtkCombo *combo = GTK_COMBO(m_widget);
 125
 126     // Disable GTK's broken events ...
 127     gtk_signal_disconnect( GTK_OBJECT(combo->entry), combo->entry_change_id );
 128     // ... and add surogate handler.
 129     combo->entry_change_id = gtk_signal_connect (GTK_OBJECT (combo->entry), "changed",
 130                               (GtkSignalFunc) gtk_dummy_callback, combo);
 131
 132     // make it more useable
 133     gtk_combo_set_use_arrows_always( GTK_COMBO(m_widget), TRUE );
 134
 135     // and case-sensitive
 136     gtk_combo_set_case_sensitive( GTK_COMBO(m_widget), TRUE );
 137
 138     GtkWidget *list = GTK_COMBO(m_widget)->list;
 139
 140 #ifndef __WXGTK20__
 141     // gtk_list_set_selection_mode( GTK_LIST(list), GTK_SELECTION_MULTIPLE );
 142 #endif
 143
 144     for (int i = 0; i < n; i++)
 145     {
 146         GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( choices[i] ) );
 147
 148         m_clientDataList.Append( (wxObject*)NULL );
 149         m_clientObjectList.Append( (wxObject*)NULL );
 150
 151         gtk_container_add( GTK_CONTAINER(list), list_item );
 152
 153         gtk_widget_show( list_item );
 154     }
 155
 156     m_parent->DoAddChild( this );
 157
 158     m_focusWidget = combo->entry;
 159
 160     PostCreation();
 161     InheritAttributes();
 162
 163     ConnectWidget( combo->button );
 164
 165     // MSW's combo box shows the value and the selection is -1
 166     gtk_entry_set_text( GTK_ENTRY(combo->entry), wxGTK_CONV(value) );
 167     gtk_list_unselect_all( GTK_LIST(combo->list) );
 168
 169     if (style & wxCB_READONLY)
 170         gtk_entry_set_editable( GTK_ENTRY( combo->entry ), FALSE );
 171
 172     gtk_signal_connect( GTK_OBJECT(combo->entry), "changed",
 173       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
 174
 175     gtk_signal_connect( GTK_OBJECT(combo->list), "select-child",
 176       GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
 177
 178     wxSize size_best( DoGetBestSize() );
 179     wxSize new_size( size );
 180     if (new_size.x == -1)
 181         new_size.x = size_best.x;
 182     if (new_size.y == -1)
 183         new_size.y = size_best.y;
 184     if (new_size.y > size_best.y)
 185         new_size.y = size_best.y;
 186     if ((new_size.x != size.x) || (new_size.y != size.y))
 187     {
 188         SetSize( new_size.x, new_size.y );
 189
 190         // This is required for tool bar support
 191         gtk_widget_set_usize( m_widget, new_size.x, new_size.y );
 192     }
 193
 194     Show( TRUE );
 195
 196     return TRUE;
 197 }
 198
 199 wxComboBox::~wxComboBox()
 200 {
 201     wxList::compatibility_iterator node = m_clientObjectList.GetFirst();
 202     while (node)
 203     {
 204         wxClientData *cd = (wxClientData*)node->GetData();
 205         if (cd) delete cd;
 206         node = node->GetNext();
 207     }
 208     m_clientObjectList.Clear();
 209
 210     m_clientDataList.Clear();
 211 }
 212
 213 void wxComboBox::SetFocus()
 214 {
 215     if ( m_hasFocus )
 216     {
 217         // don't do anything if we already have focus
 218         return;
 219     }
 220
 221     gtk_widget_grab_focus( m_focusWidget );
 222 }
 223
 224 int wxComboBox::DoAppend( const wxString &item )
 225 {
 226     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 227
 228     DisableEvents();
 229
 230     GtkWidget *list = GTK_COMBO(m_widget)->list;
 231
 232     GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
 233
 234     gtk_container_add( GTK_CONTAINER(list), list_item );
 235
 236     if (GTK_WIDGET_REALIZED(m_widget))
 237     {
 238         gtk_widget_realize( list_item );
 239         gtk_widget_realize( GTK_BIN(list_item)->child );
 240
 241         if (m_widgetStyle) ApplyWidgetStyle();
 242     }
 243
 244     gtk_widget_show( list_item );
 245
 246     const int count = GetCount();
 247
 248     if ( (int)m_clientDataList.GetCount() < count )
 249     m_clientDataList.Append( (wxObject*) NULL );
 250     if ( (int)m_clientObjectList.GetCount() < count )
 251     m_clientObjectList.Append( (wxObject*) NULL );
 252
 253     EnableEvents();
 254
 255     return count - 1;
 256 }
 257
 258 int wxComboBox::DoInsert( const wxString &item, int pos )
 259 {
 260     wxCHECK_MSG( !(GetWindowStyle() & wxCB_SORT), -1,
 261                     wxT("can't insert into sorted list"));
 262
 263     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 264
 265     int count = GetCount();
 266     wxCHECK_MSG( (pos >= 0) && (pos <= count), -1, wxT("invalid index") );
 267
 268     if (pos == count)
 269         return Append(item);
 270
 271     DisableEvents();
 272
 273     GtkWidget *list = GTK_COMBO(m_widget)->list;
 274
 275     GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
 276
 277     GList *gitem_list = g_list_alloc ();
 278     gitem_list->data = list_item;
 279     gtk_list_insert_items( GTK_LIST (list), gitem_list, pos );
 280
 281     if (GTK_WIDGET_REALIZED(m_widget))
 282     {
 283         gtk_widget_realize( list_item );
 284         gtk_widget_realize( GTK_BIN(list_item)->child );
 285
 286         if (m_widgetStyle)
 287             ApplyWidgetStyle();
 288     }
 289
 290     gtk_widget_show( list_item );
 291
 292     count = GetCount();
 293
 294     if ( (int)m_clientDataList.GetCount() < count )
 295     m_clientDataList.Insert( pos, (wxObject*) NULL );
 296     if ( (int)m_clientObjectList.GetCount() < count )
 297     m_clientObjectList.Insert( pos, (wxObject*) NULL );
 298
 299     EnableEvents();
 300
 301     return pos;
 302 }
 303
 304 void wxComboBox::DoSetItemClientData( int n, void* clientData )
 305 {
 306     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 307
 308     wxList::compatibility_iterator node = m_clientDataList.Item( n );
 309     if (!node) return;
 310
 311     node->SetData( (wxObject*) clientData );
 312 }
 313
 314 void* wxComboBox::DoGetItemClientData( int n ) const
 315 {
 316     wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid combobox") );
 317
 318     wxList::compatibility_iterator node = m_clientDataList.Item( n );
 319
 320     return node ? node->GetData() : NULL;
 321 }
 322
 323 void wxComboBox::DoSetItemClientObject( int n, wxClientData* clientData )
 324 {
 325     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 326
 327     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 328     if (!node) return;
 329
 330     wxClientData *cd = (wxClientData*) node->GetData();
 331     if (cd) delete cd;
 332
 333     node->SetData( (wxObject*) clientData );
 334 }
 335
 336 wxClientData* wxComboBox::DoGetItemClientObject( int n ) const
 337 {
 338     wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, wxT("invalid combobox") );
 339
 340     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 341
 342     return node ? (wxClientData*) node->GetData() : NULL;
 343 }
 344
 345 void wxComboBox::Clear()
 346 {
 347     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 348
 349     DisableEvents();
 350
 351     GtkWidget *list = GTK_COMBO(m_widget)->list;
 352     gtk_list_clear_items( GTK_LIST(list), 0, GetCount() );
 353
 354     wxList::compatibility_iterator node = m_clientObjectList.GetFirst();
 355     while (node)
 356     {
 357         wxClientData *cd = (wxClientData*)node->GetData();
 358         if (cd) delete cd;
 359         node = node->GetNext();
 360     }
 361     m_clientObjectList.Clear();
 362
 363     m_clientDataList.Clear();
 364
 365     EnableEvents();
 366 }
 367
 368 void wxComboBox::Delete( int n )
 369 {
 370     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 371
 372     GtkList *listbox = GTK_LIST( GTK_COMBO(m_widget)->list );
 373
 374     GList *child = g_list_nth( listbox->children, n );
 375
 376     if (!child)
 377     {
 378         wxFAIL_MSG(wxT("wrong index"));
 379         return;
 380     }
 381
 382     DisableEvents();
 383
 384     GList *list = g_list_append( (GList*) NULL, child->data );
 385     gtk_list_remove_items( listbox, list );
 386     g_list_free( list );
 387
 388     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 389     if (node)
 390     {
 391         wxClientData *cd = (wxClientData*)node->GetData();
 392         if (cd) delete cd;
 393         m_clientObjectList.Erase( node );
 394     }
 395
 396     node = m_clientDataList.Item( n );
 397     if (node)
 398         m_clientDataList.Erase( node );
 399
 400     EnableEvents();
 401 }
 402
 403 void wxComboBox::SetString(int n, const wxString &text)
 404 {
 405     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 406
 407     GtkWidget *list = GTK_COMBO(m_widget)->list;
 408
 409     GList *child = g_list_nth( GTK_LIST(list)->children, n );
 410     if (child)
 411     {
 412         GtkBin *bin = GTK_BIN( child->data );
 413         GtkLabel *label = GTK_LABEL( bin->child );
 414         gtk_label_set_text(label, wxGTK_CONV(text));
 415     }
 416     else
 417     {
 418         wxFAIL_MSG( wxT("wxComboBox: wrong index") );
 419     }
 420 }
 421
 422 int wxComboBox::FindString( const wxString &item ) const
 423 {
 424     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 425
 426     GtkWidget *list = GTK_COMBO(m_widget)->list;
 427
 428     GList *child = GTK_LIST(list)->children;
 429     int count = 0;
 430     while (child)
 431     {
 432         GtkBin *bin = GTK_BIN( child->data );
 433         GtkLabel *label = GTK_LABEL( bin->child );
 434 #ifdef __WXGTK20__
 435         wxString str( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 436 #else
 437         wxString str( label->label );
 438 #endif
 439         if (item == str)
 440             return count;
 441
 442         count++;
 443         child = child->next;
 444     }
 445
 446     return wxNOT_FOUND;
 447 }
 448
 449 int wxComboBox::GetSelection() const
 450 {
 451     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 452
 453     GtkWidget *list = GTK_COMBO(m_widget)->list;
 454
 455     GList *selection = GTK_LIST(list)->selection;
 456     if (selection)
 457     {
 458         GList *child = GTK_LIST(list)->children;
 459         int count = 0;
 460         while (child)
 461         {
 462             if (child->data == selection->data) return count;
 463             count++;
 464             child = child->next;
 465         }
 466     }
 467
 468     return -1;
 469 }
 470
 471 wxString wxComboBox::GetString( int n ) const
 472 {
 473     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid combobox") );
 474
 475     GtkWidget *list = GTK_COMBO(m_widget)->list;
 476
 477     wxString str;
 478     GList *child = g_list_nth( GTK_LIST(list)->children, n );
 479     if (child)
 480     {
 481         GtkBin *bin = GTK_BIN( child->data );
 482         GtkLabel *label = GTK_LABEL( bin->child );
 483 #ifdef __WXGTK20__
 484         str = wxGTK_CONV_BACK( gtk_label_get_text(label) );
 485 #else
 486         str = wxString( label->label );
 487 #endif
 488     }
 489     else
 490     {
 491         wxFAIL_MSG( wxT("wxComboBox: wrong index") );
 492     }
 493
 494     return str;
 495 }
 496
 497 wxString wxComboBox::GetStringSelection() const
 498 {
 499     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid combobox") );
 500
 501     GtkWidget *list = GTK_COMBO(m_widget)->list;
 502
 503     GList *selection = GTK_LIST(list)->selection;
 504     if (selection)
 505     {
 506         GtkBin *bin = GTK_BIN( selection->data );
 507         GtkLabel *label = GTK_LABEL( bin->child );
 508 #ifdef __WXGTK20__
 509         wxString tmp( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 510 #else
 511         wxString tmp( label->label );
 512 #endif
 513         return tmp;
 514     }
 515
 516     wxFAIL_MSG( wxT("wxComboBox: no selection") );
 517
 518     return wxT("");
 519 }
 520
 521 int wxComboBox::GetCount() const
 522 {
 523     wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid combobox") );
 524
 525     GtkWidget *list = GTK_COMBO(m_widget)->list;
 526
 527     GList *child = GTK_LIST(list)->children;
 528     int count = 0;
 529     while (child) { count++; child = child->next; }
 530     return count;
 531 }
 532
 533 void wxComboBox::SetSelection( int n )
 534 {
 535     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 536
 537     DisableEvents();
 538
 539     GtkWidget *list = GTK_COMBO(m_widget)->list;
 540     gtk_list_unselect_item( GTK_LIST(list), m_prevSelection );
 541     gtk_list_select_item( GTK_LIST(list), n );
 542     m_prevSelection = n;
 543
 544     EnableEvents();
 545 }
 546
 547 void wxComboBox::SetStringSelection( const wxString &string )
 548 {
 549     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 550
 551     int res = FindString( string );
 552     if (res == -1) return;
 553     SetSelection( res );
 554 }
 555
 556 wxString wxComboBox::GetValue() const
 557 {
 558     GtkEntry *entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 559     wxString tmp( wxGTK_CONV_BACK( gtk_entry_get_text( entry ) ) );
 560
 561 #if 0
 562     for (int i = 0; i < wxStrlen(tmp.c_str()) +1; i++)
 563     {
 564         wxChar c = tmp[i];
 565         printf( "%d ", (int) (c) );
 566     }
 567     printf( "\n" );
 568 #endif
 569
 570     return tmp;
 571 }
 572
 573 void wxComboBox::SetValue( const wxString& value )
 574 {
 575     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 576
 577     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 578     wxString tmp = wxT("");
 579     if (!value.IsNull()) tmp = value;
 580     gtk_entry_set_text( GTK_ENTRY(entry), wxGTK_CONV( tmp ) );
 581 }
 582
 583 void wxComboBox::Copy()
 584 {
 585     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 586
 587     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 588     gtk_editable_copy_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG );
 589 }
 590
 591 void wxComboBox::Cut()
 592 {
 593     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 594
 595     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 596     gtk_editable_cut_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG );
 597 }
 598
 599 void wxComboBox::Paste()
 600 {
 601     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 602
 603     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 604     gtk_editable_paste_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG);
 605 }
 606
 607 void wxComboBox::SetInsertionPoint( long pos )
 608 {
 609     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 610
 611     if ( pos == GetLastPosition() )
 612         pos = -1;
 613
 614     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 615     gtk_entry_set_position( GTK_ENTRY(entry), (int)pos );
 616 }
 617
 618 long wxComboBox::GetInsertionPoint() const
 619 {
 620     return (long) GET_EDITABLE_POS( GTK_COMBO(m_widget)->entry );
 621 }
 622
 623 long wxComboBox::GetLastPosition() const
 624 {
 625     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 626     int pos = GTK_ENTRY(entry)->text_length;
 627     return (long) pos-1;
 628 }
 629
 630 void wxComboBox::Replace( long from, long to, const wxString& value )
 631 {
 632     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 633
 634     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 635     gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
 636     if (value.IsNull()) return;
 637     gint pos = (gint)to;
 638
 639 #if wxUSE_UNICODE
 640     wxCharBuffer buffer = wxConvUTF8.cWX2MB( value );
 641     gtk_editable_insert_text( GTK_EDITABLE(entry), (const char*) buffer, strlen( (const char*) buffer ), &pos );
 642 #else
 643     gtk_editable_insert_text( GTK_EDITABLE(entry), value.c_str(), value.Length(), &pos );
 644 #endif
 645 }
 646
 647 void wxComboBox::SetSelection( long from, long to )
 648 {
 649     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 650     gtk_editable_select_region( GTK_EDITABLE(entry), (gint)from, (gint)to );
 651 }
 652
 653 void wxComboBox::SetEditable( bool editable )
 654 {
 655     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 656     gtk_entry_set_editable( GTK_ENTRY(entry), editable );
 657 }
 658
 659 void wxComboBox::OnChar( wxKeyEvent &event )
 660 {
 661     if ( event.GetKeyCode() == WXK_RETURN )
 662     {
 663         // GTK automatically selects an item if its in the list
 664         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, GetId());
 665         event.SetString( GetValue() );
 666         event.SetInt( GetSelection() );
 667         event.SetEventObject( this );
 668
 669         if (!GetEventHandler()->ProcessEvent( event ))
 670         {
 671             // This will invoke the dialog default action, such
 672             // as the clicking the default button.
 673
 674             wxWindow *top_frame = m_parent;
 675             while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
 676                 top_frame = top_frame->GetParent();
 677
 678             if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
 679             {
 680                 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
 681
 682                 if (window->default_widget)
 683                     gtk_widget_activate (window->default_widget);
 684             }
 685         }
 686
 687         // Catch GTK event so that GTK doesn't open the drop
 688         // down list upon RETURN.
 689         return;
 690     }
 691
 692     event.Skip();
 693 }
 694
 695 void wxComboBox::DisableEvents()
 696 {
 697     gtk_signal_disconnect_by_func( GTK_OBJECT(GTK_COMBO(m_widget)->list),
 698       GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
 699     gtk_signal_disconnect_by_func( GTK_OBJECT(GTK_COMBO(m_widget)->entry),
 700       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
 701 }
 702
 703 void wxComboBox::EnableEvents()
 704 {
 705     gtk_signal_connect( GTK_OBJECT(GTK_COMBO(m_widget)->list), "select-child",
 706       GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
 707     gtk_signal_connect( GTK_OBJECT(GTK_COMBO(m_widget)->entry), "changed",
 708       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
 709 }
 710
 711 void wxComboBox::OnSize( wxSizeEvent &event )
 712 {
 713     event.Skip();
 714
 715 #if 0
 716     int w = 21;
 717     gtk_widget_set_usize( GTK_COMBO(m_widget)->entry, m_width-w-1, m_height );
 718
 719     gtk_widget_set_uposition( GTK_COMBO(m_widget)->button, m_x+m_width-w, m_y );
 720     gtk_widget_set_usize( GTK_COMBO(m_widget)->button, w, m_height );
 721 #endif // 0
 722 }
 723
 724 void wxComboBox::ApplyWidgetStyle()
 725 {
 726     SetWidgetStyle();
 727
 728 //    gtk_widget_set_style( GTK_COMBO(m_widget)->button, m_widgetStyle );
 729     gtk_widget_set_style( GTK_COMBO(m_widget)->entry, m_widgetStyle );
 730     gtk_widget_set_style( GTK_COMBO(m_widget)->list, m_widgetStyle );
 731
 732     GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
 733     GList *child = list->children;
 734     while (child)
 735     {
 736         gtk_widget_set_style( GTK_WIDGET(child->data), m_widgetStyle );
 737
 738         GtkBin *bin = GTK_BIN(child->data);
 739         gtk_widget_set_style( bin->child, m_widgetStyle );
 740
 741         child = child->next;
 742     }
 743 }
 744
 745 GtkWidget* wxComboBox::GetConnectWidget()
 746 {
 747     return GTK_COMBO(m_widget)->entry;
 748 }
 749
 750 bool wxComboBox::IsOwnGtkWindow( GdkWindow *window )
 751 {
 752     return ( (window == GTK_ENTRY( GTK_COMBO(m_widget)->entry )->text_area) ||
 753              (window == GTK_COMBO(m_widget)->button->window ) );
 754 }
 755
 756 wxSize wxComboBox::DoGetBestSize() const
 757 {
 758     wxSize ret( wxControl::DoGetBestSize() );
 759
 760     // we know better our horizontal extent: it depends on the longest string
 761     // in the combobox
 762     ret.x = 0;
 763     if ( m_widget )
 764     {
 765         int width;
 766         size_t count = GetCount();
 767         for ( size_t n = 0; n < count; n++ )
 768         {
 769             GetTextExtent( GetString(n), &width, NULL, NULL, NULL, &m_font );
 770             if ( width > ret.x )
 771                 ret.x = width;
 772         }
 773     }
 774
 775     // empty combobox should have some reasonable default size too
 776     if ( ret.x < 100 )
 777         ret.x = 100;
 778     return ret;
 779 }
 780
 781 #endif