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/arrstr.h"
  23 #include "wx/intl.h"
  24
  25 #include "wx/textctrl.h"    // for wxEVT_COMMAND_TEXT_UPDATED
  26
  27 #include "wx/gtk/private.h"
  28
  29 //-----------------------------------------------------------------------------
  30 // idle system
  31 //-----------------------------------------------------------------------------
  32
  33 extern void wxapp_install_idle_handler();
  34 extern bool g_isIdle;
  35
  36 //-----------------------------------------------------------------------------
  37 // data
  38 //-----------------------------------------------------------------------------
  39
  40 extern bool   g_blockEventsOnDrag;
  41
  42 //-----------------------------------------------------------------------------
  43 // "select-child" - click/cursor get select-child, changed, select-child
  44 //-----------------------------------------------------------------------------
  45
  46 static void
  47 gtk_combo_select_child_callback( GtkList *WXUNUSED(list), GtkWidget *WXUNUSED(widget), wxComboBox *combo )
  48 {
  49     if (g_isIdle) wxapp_install_idle_handler();
  50
  51     if (!combo->m_hasVMT) return;
  52
  53     if (g_blockEventsOnDrag) return;
  54
  55     int curSelection = combo->GetSelection();
  56
  57     if (combo->m_prevSelection != curSelection)
  58     {
  59         GtkWidget *list = GTK_COMBO(combo->m_widget)->list;
  60         gtk_list_unselect_item( GTK_LIST(list), combo->m_prevSelection );
  61     }
  62     combo->m_prevSelection = curSelection;
  63
  64     wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
  65     event.SetInt( curSelection );
  66     event.SetString( combo->GetStringSelection() );
  67     event.SetEventObject( combo );
  68
  69     combo->GetEventHandler()->ProcessEvent( event );
  70 }
  71
  72 //-----------------------------------------------------------------------------
  73 //  "changed" - typing and list item matches get changed, select-child
  74 //              if it doesn't match an item then just get a single changed
  75 //-----------------------------------------------------------------------------
  76
  77 static void
  78 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
  79 {
  80     if (g_isIdle) wxapp_install_idle_handler();
  81
  82     if (!combo->m_hasVMT) return;
  83
  84     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
  85     event.SetString( combo->GetValue() );
  86     event.SetEventObject( combo );
  87     combo->GetEventHandler()->ProcessEvent( event );
  88 }
  89
  90 static void
  91 gtk_dummy_callback(GtkEntry *WXUNUSED(entry), GtkCombo *WXUNUSED(combo))
  92 {
  93 }
  94
  95 //-----------------------------------------------------------------------------
  96 // wxComboBox
  97 //-----------------------------------------------------------------------------
  98
  99 IMPLEMENT_DYNAMIC_CLASS(wxComboBox,wxControl)
 100
 101 BEGIN_EVENT_TABLE(wxComboBox, wxControl)
 102     EVT_SIZE(wxComboBox::OnSize)
 103     EVT_CHAR(wxComboBox::OnChar)
 104 END_EVENT_TABLE()
 105
 106 bool wxComboBox::Create( wxWindow *parent, wxWindowID id,
 107                          const wxString& value,
 108                          const wxPoint& pos, const wxSize& size,
 109                          const wxArrayString& choices,
 110                          long style, const wxValidator& validator,
 111                          const wxString& name )
 112 {
 113     wxCArrayString chs(choices);
 114
 115     return Create( parent, id, value, pos, size, chs.GetCount(),
 116                    chs.GetStrings(), style, validator, name );
 117 }
 118
 119 bool wxComboBox::Create( wxWindow *parent, wxWindowID id, const wxString& value,
 120                          const wxPoint& pos, const wxSize& size,
 121                          int n, const wxString choices[],
 122                          long style, const wxValidator& validator,
 123                          const wxString& name )
 124 {
 125     m_alreadySent = FALSE;
 126     m_needParent = TRUE;
 127     m_acceptsFocus = TRUE;
 128     m_prevSelection = 0;
 129
 130     if (!PreCreation( parent, pos, size ) ||
 131         !CreateBase( parent, id, pos, size, style, validator, name ))
 132     {
 133         wxFAIL_MSG( wxT("wxComboBox creation failed") );
 134         return FALSE;
 135     }
 136
 137     m_widget = gtk_combo_new();
 138     GtkCombo *combo = GTK_COMBO(m_widget);
 139
 140     // Disable GTK's broken events ...
 141     gtk_signal_disconnect( GTK_OBJECT(combo->entry), combo->entry_change_id );
 142     // ... and add surogate handler.
 143     combo->entry_change_id = gtk_signal_connect (GTK_OBJECT (combo->entry), "changed",
 144                               (GtkSignalFunc) gtk_dummy_callback, combo);
 145
 146     // make it more useable
 147     gtk_combo_set_use_arrows_always( GTK_COMBO(m_widget), TRUE );
 148
 149     // and case-sensitive
 150     gtk_combo_set_case_sensitive( GTK_COMBO(m_widget), TRUE );
 151
 152     GtkWidget *list = GTK_COMBO(m_widget)->list;
 153
 154 #ifndef __WXGTK20__
 155     // gtk_list_set_selection_mode( GTK_LIST(list), GTK_SELECTION_MULTIPLE );
 156 #endif
 157
 158     for (int i = 0; i < n; i++)
 159     {
 160         GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( choices[i] ) );
 161
 162         m_clientDataList.Append( (wxObject*)NULL );
 163         m_clientObjectList.Append( (wxObject*)NULL );
 164
 165         gtk_container_add( GTK_CONTAINER(list), list_item );
 166
 167         gtk_widget_show( list_item );
 168     }
 169
 170     m_parent->DoAddChild( this );
 171
 172     m_focusWidget = combo->entry;
 173
 174     PostCreation(size);
 175
 176     ConnectWidget( combo->button );
 177
 178     // MSW's combo box shows the value and the selection is -1
 179     gtk_entry_set_text( GTK_ENTRY(combo->entry), wxGTK_CONV(value) );
 180     gtk_list_unselect_all( GTK_LIST(combo->list) );
 181
 182     if (style & wxCB_READONLY)
 183         gtk_entry_set_editable( GTK_ENTRY( combo->entry ), FALSE );
 184
 185     gtk_signal_connect( GTK_OBJECT(combo->entry), "changed",
 186       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
 187
 188     gtk_signal_connect( GTK_OBJECT(combo->list), "select-child",
 189       GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
 190
 191     SetBestSize(size); // need this too because this is a wxControlWithItems
 192
 193     // This is required for tool bar support
 194     wxSize setsize = GetSize();
 195     gtk_widget_set_usize( m_widget, setsize.x, setsize.y );
 196
 197     return TRUE;
 198 }
 199
 200 wxComboBox::~wxComboBox()
 201 {
 202     wxList::compatibility_iterator node = m_clientObjectList.GetFirst();
 203     while (node)
 204     {
 205         wxClientData *cd = (wxClientData*)node->GetData();
 206         if (cd) delete cd;
 207         node = node->GetNext();
 208     }
 209     m_clientObjectList.Clear();
 210
 211     m_clientDataList.Clear();
 212 }
 213
 214 void wxComboBox::SetFocus()
 215 {
 216     if ( m_hasFocus )
 217     {
 218         // don't do anything if we already have focus
 219         return;
 220     }
 221
 222     gtk_widget_grab_focus( m_focusWidget );
 223 }
 224
 225 int wxComboBox::DoAppend( const wxString &item )
 226 {
 227     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 228
 229     DisableEvents();
 230
 231     GtkWidget *list = GTK_COMBO(m_widget)->list;
 232
 233     GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
 234
 235     gtk_container_add( GTK_CONTAINER(list), list_item );
 236
 237     if (GTK_WIDGET_REALIZED(m_widget))
 238     {
 239         gtk_widget_realize( list_item );
 240         gtk_widget_realize( GTK_BIN(list_item)->child );
 241
 242         if (m_widgetStyle) ApplyWidgetStyle();
 243     }
 244
 245     gtk_widget_show( list_item );
 246
 247     const int count = GetCount();
 248
 249     if ( (int)m_clientDataList.GetCount() < count )
 250     m_clientDataList.Append( (wxObject*) NULL );
 251     if ( (int)m_clientObjectList.GetCount() < count )
 252     m_clientObjectList.Append( (wxObject*) NULL );
 253
 254     EnableEvents();
 255
 256     return count - 1;
 257 }
 258
 259 int wxComboBox::DoInsert( const wxString &item, int pos )
 260 {
 261     wxCHECK_MSG( !(GetWindowStyle() & wxCB_SORT), -1,
 262                     wxT("can't insert into sorted list"));
 263
 264     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 265
 266     int count = GetCount();
 267     wxCHECK_MSG( (pos >= 0) && (pos <= count), -1, wxT("invalid index") );
 268
 269     if (pos == count)
 270         return Append(item);
 271
 272     DisableEvents();
 273
 274     GtkWidget *list = GTK_COMBO(m_widget)->list;
 275
 276     GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
 277
 278     GList *gitem_list = g_list_alloc ();
 279     gitem_list->data = list_item;
 280     gtk_list_insert_items( GTK_LIST (list), gitem_list, pos );
 281
 282     if (GTK_WIDGET_REALIZED(m_widget))
 283     {
 284         gtk_widget_realize( list_item );
 285         gtk_widget_realize( GTK_BIN(list_item)->child );
 286
 287         if (m_widgetStyle)
 288             ApplyWidgetStyle();
 289     }
 290
 291     gtk_widget_show( list_item );
 292
 293     count = GetCount();
 294
 295     if ( (int)m_clientDataList.GetCount() < count )
 296     m_clientDataList.Insert( pos, (wxObject*) NULL );
 297     if ( (int)m_clientObjectList.GetCount() < count )
 298     m_clientObjectList.Insert( pos, (wxObject*) NULL );
 299
 300     EnableEvents();
 301
 302     return pos;
 303 }
 304
 305 void wxComboBox::DoSetItemClientData( int n, void* clientData )
 306 {
 307     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 308
 309     wxList::compatibility_iterator node = m_clientDataList.Item( n );
 310     if (!node) return;
 311
 312     node->SetData( (wxObject*) clientData );
 313 }
 314
 315 void* wxComboBox::DoGetItemClientData( int n ) const
 316 {
 317     wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid combobox") );
 318
 319     wxList::compatibility_iterator node = m_clientDataList.Item( n );
 320
 321     return node ? node->GetData() : NULL;
 322 }
 323
 324 void wxComboBox::DoSetItemClientObject( int n, wxClientData* clientData )
 325 {
 326     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 327
 328     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 329     if (!node) return;
 330
 331     // wxItemContainer already deletes data for us
 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 bool wxComboBox::SetStringSelection( const wxString &string )
 548 {
 549     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid combobox") );
 550
 551     int res = FindString( string );
 552     if (res == -1) return false;
 553     SetSelection( res );
 554     return true;
 555 }
 556
 557 wxString wxComboBox::GetValue() const
 558 {
 559     GtkEntry *entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 560     wxString tmp( wxGTK_CONV_BACK( gtk_entry_get_text( entry ) ) );
 561
 562 #if 0
 563     for (int i = 0; i < wxStrlen(tmp.c_str()) +1; i++)
 564     {
 565         wxChar c = tmp[i];
 566         printf( "%d ", (int) (c) );
 567     }
 568     printf( "\n" );
 569 #endif
 570
 571     return tmp;
 572 }
 573
 574 void wxComboBox::SetValue( const wxString& value )
 575 {
 576     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 577
 578     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 579     wxString tmp = wxT("");
 580     if (!value.IsNull()) tmp = value;
 581     gtk_entry_set_text( GTK_ENTRY(entry), wxGTK_CONV( tmp ) );
 582 }
 583
 584 void wxComboBox::Copy()
 585 {
 586     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 587
 588     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 589     gtk_editable_copy_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG );
 590 }
 591
 592 void wxComboBox::Cut()
 593 {
 594     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 595
 596     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 597     gtk_editable_cut_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG );
 598 }
 599
 600 void wxComboBox::Paste()
 601 {
 602     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 603
 604     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 605     gtk_editable_paste_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG);
 606 }
 607
 608 void wxComboBox::SetInsertionPoint( long pos )
 609 {
 610     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 611
 612     if ( pos == GetLastPosition() )
 613         pos = -1;
 614
 615     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 616     gtk_entry_set_position( GTK_ENTRY(entry), (int)pos );
 617 }
 618
 619 long wxComboBox::GetInsertionPoint() const
 620 {
 621     return (long) GET_EDITABLE_POS( GTK_COMBO(m_widget)->entry );
 622 }
 623
 624 long wxComboBox::GetLastPosition() const
 625 {
 626     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 627     int pos = GTK_ENTRY(entry)->text_length;
 628     return (long) pos-1;
 629 }
 630
 631 void wxComboBox::Replace( long from, long to, const wxString& value )
 632 {
 633     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 634
 635     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 636     gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
 637     if (value.IsNull()) return;
 638     gint pos = (gint)to;
 639
 640 #if wxUSE_UNICODE
 641     wxCharBuffer buffer = wxConvUTF8.cWX2MB( value );
 642     gtk_editable_insert_text( GTK_EDITABLE(entry), (const char*) buffer, strlen( (const char*) buffer ), &pos );
 643 #else
 644     gtk_editable_insert_text( GTK_EDITABLE(entry), value.c_str(), value.Length(), &pos );
 645 #endif
 646 }
 647
 648 void wxComboBox::SetSelection( long from, long to )
 649 {
 650     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 651     gtk_editable_select_region( GTK_EDITABLE(entry), (gint)from, (gint)to );
 652 }
 653
 654 void wxComboBox::SetEditable( bool editable )
 655 {
 656     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 657     gtk_entry_set_editable( GTK_ENTRY(entry), editable );
 658 }
 659
 660 void wxComboBox::OnChar( wxKeyEvent &event )
 661 {
 662     if ( event.GetKeyCode() == WXK_RETURN )
 663     {
 664         // GTK automatically selects an item if its in the list
 665         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, GetId());
 666         event.SetString( GetValue() );
 667         event.SetInt( GetSelection() );
 668         event.SetEventObject( this );
 669
 670         if (!GetEventHandler()->ProcessEvent( event ))
 671         {
 672             // This will invoke the dialog default action, such
 673             // as the clicking the default button.
 674
 675             wxWindow *top_frame = m_parent;
 676             while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
 677                 top_frame = top_frame->GetParent();
 678
 679             if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
 680             {
 681                 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
 682
 683                 if (window->default_widget)
 684                     gtk_widget_activate (window->default_widget);
 685             }
 686         }
 687
 688         // Catch GTK event so that GTK doesn't open the drop
 689         // down list upon RETURN.
 690         return;
 691     }
 692
 693     event.Skip();
 694 }
 695
 696 void wxComboBox::DisableEvents()
 697 {
 698     gtk_signal_disconnect_by_func( GTK_OBJECT(GTK_COMBO(m_widget)->list),
 699       GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
 700     gtk_signal_disconnect_by_func( GTK_OBJECT(GTK_COMBO(m_widget)->entry),
 701       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
 702 }
 703
 704 void wxComboBox::EnableEvents()
 705 {
 706     gtk_signal_connect( GTK_OBJECT(GTK_COMBO(m_widget)->list), "select-child",
 707       GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
 708     gtk_signal_connect( GTK_OBJECT(GTK_COMBO(m_widget)->entry), "changed",
 709       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
 710 }
 711
 712 void wxComboBox::OnSize( wxSizeEvent &event )
 713 {
 714     event.Skip();
 715
 716 #if 0
 717     int w = 21;
 718     gtk_widget_set_usize( GTK_COMBO(m_widget)->entry, m_width-w-1, m_height );
 719
 720     gtk_widget_set_uposition( GTK_COMBO(m_widget)->button, m_x+m_width-w, m_y );
 721     gtk_widget_set_usize( GTK_COMBO(m_widget)->button, w, m_height );
 722 #endif // 0
 723 }
 724
 725 void wxComboBox::ApplyWidgetStyle()
 726 {
 727     SetWidgetStyle();
 728
 729 //    gtk_widget_set_style( GTK_COMBO(m_widget)->button, m_widgetStyle );
 730     gtk_widget_set_style( GTK_COMBO(m_widget)->entry, m_widgetStyle );
 731     gtk_widget_set_style( GTK_COMBO(m_widget)->list, m_widgetStyle );
 732
 733     GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
 734     GList *child = list->children;
 735     while (child)
 736     {
 737         gtk_widget_set_style( GTK_WIDGET(child->data), m_widgetStyle );
 738
 739         GtkBin *bin = GTK_BIN(child->data);
 740         gtk_widget_set_style( bin->child, m_widgetStyle );
 741
 742         child = child->next;
 743     }
 744 }
 745
 746 GtkWidget* wxComboBox::GetConnectWidget()
 747 {
 748     return GTK_COMBO(m_widget)->entry;
 749 }
 750
 751 bool wxComboBox::IsOwnGtkWindow( GdkWindow *window )
 752 {
 753     return ( (window == GTK_ENTRY( GTK_COMBO(m_widget)->entry )->text_area) ||
 754              (window == GTK_COMBO(m_widget)->button->window ) );
 755 }
 756
 757 wxSize wxComboBox::DoGetBestSize() const
 758 {
 759     wxSize ret( wxControl::DoGetBestSize() );
 760
 761     // we know better our horizontal extent: it depends on the longest string
 762     // in the combobox
 763     ret.x = 0;
 764     if ( m_widget )
 765     {
 766         int width;
 767         size_t count = GetCount();
 768         for ( size_t n = 0; n < count; n++ )
 769         {
 770             GetTextExtent( GetString(n), &width, NULL, NULL, NULL );
 771             if ( width > ret.x )
 772                 ret.x = width;
 773         }
 774     }
 775
 776     // empty combobox should have some reasonable default size too
 777     if ( ret.x < 100 )
 778         ret.x = 100;
 779     return ret;
 780 }
 781
 782 // static
 783 wxVisualAttributes
 784 wxComboBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 785 {
 786     return GetDefaultAttributesFromGTKWidget(gtk_combo_new, true);
 787 }
 788
 789 #endif