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) return;
  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
 243     // Apply current widget style to the new list_item
 244     GtkRcStyle *style = CreateWidgetStyle();
 245     if (style)
 246     {
 247         gtk_widget_modify_style( GTK_WIDGET( list_item ), style );
 248         GtkBin *bin = GTK_BIN( list_item );
 249         GtkWidget *label = GTK_WIDGET( bin->child );
 250         gtk_widget_modify_style( label, style );
 251         gtk_rc_style_unref( style );
 252     }
 253
 254     gtk_widget_show( list_item );
 255
 256     const int count = GetCount();
 257
 258     if ( (int)m_clientDataList.GetCount() < count )
 259     m_clientDataList.Append( (wxObject*) NULL );
 260     if ( (int)m_clientObjectList.GetCount() < count )
 261     m_clientObjectList.Append( (wxObject*) NULL );
 262
 263     EnableEvents();
 264
 265     return count - 1;
 266 }
 267
 268 int wxComboBox::DoInsert( const wxString &item, int pos )
 269 {
 270     wxCHECK_MSG( !(GetWindowStyle() & wxCB_SORT), -1,
 271                     wxT("can't insert into sorted list"));
 272
 273     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 274
 275     int count = GetCount();
 276     wxCHECK_MSG( (pos >= 0) && (pos <= count), -1, wxT("invalid index") );
 277
 278     if (pos == count)
 279         return Append(item);
 280
 281     DisableEvents();
 282
 283     GtkWidget *list = GTK_COMBO(m_widget)->list;
 284
 285     GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
 286
 287     GList *gitem_list = g_list_alloc ();
 288     gitem_list->data = list_item;
 289     gtk_list_insert_items( GTK_LIST (list), gitem_list, pos );
 290
 291     if (GTK_WIDGET_REALIZED(m_widget))
 292     {
 293         gtk_widget_realize( list_item );
 294         gtk_widget_realize( GTK_BIN(list_item)->child );
 295
 296         ApplyWidgetStyle();
 297     }
 298
 299     gtk_widget_show( list_item );
 300
 301     count = GetCount();
 302
 303     if ( (int)m_clientDataList.GetCount() < count )
 304     m_clientDataList.Insert( pos, (wxObject*) NULL );
 305     if ( (int)m_clientObjectList.GetCount() < count )
 306     m_clientObjectList.Insert( pos, (wxObject*) NULL );
 307
 308     EnableEvents();
 309
 310     return pos;
 311 }
 312
 313 void wxComboBox::DoSetItemClientData( int n, void* clientData )
 314 {
 315     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 316
 317     wxList::compatibility_iterator node = m_clientDataList.Item( n );
 318     if (!node) return;
 319
 320     node->SetData( (wxObject*) clientData );
 321 }
 322
 323 void* wxComboBox::DoGetItemClientData( int n ) const
 324 {
 325     wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid combobox") );
 326
 327     wxList::compatibility_iterator node = m_clientDataList.Item( n );
 328
 329     return node ? node->GetData() : NULL;
 330 }
 331
 332 void wxComboBox::DoSetItemClientObject( int n, wxClientData* clientData )
 333 {
 334     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 335
 336     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 337     if (!node) return;
 338
 339     // wxItemContainer already deletes data for us
 340
 341     node->SetData( (wxObject*) clientData );
 342 }
 343
 344 wxClientData* wxComboBox::DoGetItemClientObject( int n ) const
 345 {
 346     wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, wxT("invalid combobox") );
 347
 348     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 349
 350     return node ? (wxClientData*) node->GetData() : NULL;
 351 }
 352
 353 void wxComboBox::Clear()
 354 {
 355     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 356
 357     DisableEvents();
 358
 359     GtkWidget *list = GTK_COMBO(m_widget)->list;
 360     gtk_list_clear_items( GTK_LIST(list), 0, GetCount() );
 361
 362     wxList::compatibility_iterator node = m_clientObjectList.GetFirst();
 363     while (node)
 364     {
 365         wxClientData *cd = (wxClientData*)node->GetData();
 366         if (cd) delete cd;
 367         node = node->GetNext();
 368     }
 369     m_clientObjectList.Clear();
 370
 371     m_clientDataList.Clear();
 372
 373     EnableEvents();
 374 }
 375
 376 void wxComboBox::Delete( int n )
 377 {
 378     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 379
 380     GtkList *listbox = GTK_LIST( GTK_COMBO(m_widget)->list );
 381
 382     GList *child = g_list_nth( listbox->children, n );
 383
 384     if (!child)
 385     {
 386         wxFAIL_MSG(wxT("wrong index"));
 387         return;
 388     }
 389
 390     DisableEvents();
 391
 392     GList *list = g_list_append( (GList*) NULL, child->data );
 393     gtk_list_remove_items( listbox, list );
 394     g_list_free( list );
 395
 396     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 397     if (node)
 398     {
 399         wxClientData *cd = (wxClientData*)node->GetData();
 400         if (cd) delete cd;
 401         m_clientObjectList.Erase( node );
 402     }
 403
 404     node = m_clientDataList.Item( n );
 405     if (node)
 406         m_clientDataList.Erase( node );
 407
 408     EnableEvents();
 409 }
 410
 411 void wxComboBox::SetString(int n, const wxString &text)
 412 {
 413     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 414
 415     GtkWidget *list = GTK_COMBO(m_widget)->list;
 416
 417     GList *child = g_list_nth( GTK_LIST(list)->children, n );
 418     if (child)
 419     {
 420         GtkBin *bin = GTK_BIN( child->data );
 421         GtkLabel *label = GTK_LABEL( bin->child );
 422         gtk_label_set_text(label, wxGTK_CONV(text));
 423     }
 424     else
 425     {
 426         wxFAIL_MSG( wxT("wxComboBox: wrong index") );
 427     }
 428 }
 429
 430 int wxComboBox::FindString( const wxString &item ) const
 431 {
 432     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 433
 434     GtkWidget *list = GTK_COMBO(m_widget)->list;
 435
 436     GList *child = GTK_LIST(list)->children;
 437     int count = 0;
 438     while (child)
 439     {
 440         GtkBin *bin = GTK_BIN( child->data );
 441         GtkLabel *label = GTK_LABEL( bin->child );
 442 #ifdef __WXGTK20__
 443         wxString str( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 444 #else
 445         wxString str( label->label );
 446 #endif
 447         if (item == str)
 448             return count;
 449
 450         count++;
 451         child = child->next;
 452     }
 453
 454     return wxNOT_FOUND;
 455 }
 456
 457 int wxComboBox::GetSelection() const
 458 {
 459     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 460
 461     GtkWidget *list = GTK_COMBO(m_widget)->list;
 462
 463     GList *selection = GTK_LIST(list)->selection;
 464     if (selection)
 465     {
 466         GList *child = GTK_LIST(list)->children;
 467         int count = 0;
 468         while (child)
 469         {
 470             if (child->data == selection->data) return count;
 471             count++;
 472             child = child->next;
 473         }
 474     }
 475
 476     return -1;
 477 }
 478
 479 wxString wxComboBox::GetString( int n ) const
 480 {
 481     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid combobox") );
 482
 483     GtkWidget *list = GTK_COMBO(m_widget)->list;
 484
 485     wxString str;
 486     GList *child = g_list_nth( GTK_LIST(list)->children, n );
 487     if (child)
 488     {
 489         GtkBin *bin = GTK_BIN( child->data );
 490         GtkLabel *label = GTK_LABEL( bin->child );
 491 #ifdef __WXGTK20__
 492         str = wxGTK_CONV_BACK( gtk_label_get_text(label) );
 493 #else
 494         str = wxString( label->label );
 495 #endif
 496     }
 497     else
 498     {
 499         wxFAIL_MSG( wxT("wxComboBox: wrong index") );
 500     }
 501
 502     return str;
 503 }
 504
 505 wxString wxComboBox::GetStringSelection() const
 506 {
 507     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid combobox") );
 508
 509     GtkWidget *list = GTK_COMBO(m_widget)->list;
 510
 511     GList *selection = GTK_LIST(list)->selection;
 512     if (selection)
 513     {
 514         GtkBin *bin = GTK_BIN( selection->data );
 515         GtkLabel *label = GTK_LABEL( bin->child );
 516 #ifdef __WXGTK20__
 517         wxString tmp( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 518 #else
 519         wxString tmp( label->label );
 520 #endif
 521         return tmp;
 522     }
 523
 524     wxFAIL_MSG( wxT("wxComboBox: no selection") );
 525
 526     return wxT("");
 527 }
 528
 529 int wxComboBox::GetCount() const
 530 {
 531     wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid combobox") );
 532
 533     GtkWidget *list = GTK_COMBO(m_widget)->list;
 534
 535     GList *child = GTK_LIST(list)->children;
 536     int count = 0;
 537     while (child) { count++; child = child->next; }
 538     return count;
 539 }
 540
 541 void wxComboBox::SetSelection( int n )
 542 {
 543     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 544
 545     DisableEvents();
 546
 547     GtkWidget *list = GTK_COMBO(m_widget)->list;
 548     gtk_list_unselect_item( GTK_LIST(list), m_prevSelection );
 549     gtk_list_select_item( GTK_LIST(list), n );
 550     m_prevSelection = n;
 551
 552     EnableEvents();
 553 }
 554
 555 bool wxComboBox::SetStringSelection( const wxString &string )
 556 {
 557     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid combobox") );
 558
 559     int res = FindString( string );
 560     if (res == -1) return false;
 561     SetSelection( res );
 562     return true;
 563 }
 564
 565 wxString wxComboBox::GetValue() const
 566 {
 567     GtkEntry *entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 568     wxString tmp( wxGTK_CONV_BACK( gtk_entry_get_text( entry ) ) );
 569
 570 #if 0
 571     for (int i = 0; i < wxStrlen(tmp.c_str()) +1; i++)
 572     {
 573         wxChar c = tmp[i];
 574         printf( "%d ", (int) (c) );
 575     }
 576     printf( "\n" );
 577 #endif
 578
 579     return tmp;
 580 }
 581
 582 void wxComboBox::SetValue( const wxString& value )
 583 {
 584     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 585
 586     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 587     wxString tmp = wxT("");
 588     if (!value.IsNull()) tmp = value;
 589     gtk_entry_set_text( GTK_ENTRY(entry), wxGTK_CONV( tmp ) );
 590 }
 591
 592 void wxComboBox::Copy()
 593 {
 594     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 595
 596     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 597     gtk_editable_copy_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG );
 598 }
 599
 600 void wxComboBox::Cut()
 601 {
 602     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 603
 604     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 605     gtk_editable_cut_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG );
 606 }
 607
 608 void wxComboBox::Paste()
 609 {
 610     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 611
 612     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 613     gtk_editable_paste_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG);
 614 }
 615
 616 void wxComboBox::SetInsertionPoint( long pos )
 617 {
 618     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 619
 620     if ( pos == GetLastPosition() )
 621         pos = -1;
 622
 623     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 624     gtk_entry_set_position( GTK_ENTRY(entry), (int)pos );
 625 }
 626
 627 long wxComboBox::GetInsertionPoint() const
 628 {
 629     return (long) GET_EDITABLE_POS( GTK_COMBO(m_widget)->entry );
 630 }
 631
 632 long wxComboBox::GetLastPosition() const
 633 {
 634     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 635     int pos = GTK_ENTRY(entry)->text_length;
 636     return (long) pos-1;
 637 }
 638
 639 void wxComboBox::Replace( long from, long to, const wxString& value )
 640 {
 641     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 642
 643     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 644     gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
 645     if (value.IsNull()) return;
 646     gint pos = (gint)to;
 647
 648 #if wxUSE_UNICODE
 649     wxCharBuffer buffer = wxConvUTF8.cWX2MB( value );
 650     gtk_editable_insert_text( GTK_EDITABLE(entry), (const char*) buffer, strlen( (const char*) buffer ), &pos );
 651 #else
 652     gtk_editable_insert_text( GTK_EDITABLE(entry), value.c_str(), value.Length(), &pos );
 653 #endif
 654 }
 655
 656 void wxComboBox::SetSelection( long from, long to )
 657 {
 658     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 659     gtk_editable_select_region( GTK_EDITABLE(entry), (gint)from, (gint)to );
 660 }
 661
 662 void wxComboBox::SetEditable( bool editable )
 663 {
 664     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 665     gtk_entry_set_editable( GTK_ENTRY(entry), editable );
 666 }
 667
 668 void wxComboBox::OnChar( wxKeyEvent &event )
 669 {
 670     if ( event.GetKeyCode() == WXK_RETURN )
 671     {
 672         // GTK automatically selects an item if its in the list
 673         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, GetId());
 674         event.SetString( GetValue() );
 675         event.SetInt( GetSelection() );
 676         event.SetEventObject( this );
 677
 678         if (!GetEventHandler()->ProcessEvent( event ))
 679         {
 680             // This will invoke the dialog default action, such
 681             // as the clicking the default button.
 682
 683             wxWindow *top_frame = m_parent;
 684             while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
 685                 top_frame = top_frame->GetParent();
 686
 687             if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
 688             {
 689                 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
 690
 691                 if (window->default_widget)
 692                     gtk_widget_activate (window->default_widget);
 693             }
 694         }
 695
 696         // Catch GTK event so that GTK doesn't open the drop
 697         // down list upon RETURN.
 698         return;
 699     }
 700
 701     event.Skip();
 702 }
 703
 704 void wxComboBox::DisableEvents()
 705 {
 706     gtk_signal_disconnect_by_func( GTK_OBJECT(GTK_COMBO(m_widget)->list),
 707       GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
 708     gtk_signal_disconnect_by_func( GTK_OBJECT(GTK_COMBO(m_widget)->entry),
 709       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
 710 }
 711
 712 void wxComboBox::EnableEvents()
 713 {
 714     gtk_signal_connect( GTK_OBJECT(GTK_COMBO(m_widget)->list), "select-child",
 715       GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
 716     gtk_signal_connect( GTK_OBJECT(GTK_COMBO(m_widget)->entry), "changed",
 717       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
 718 }
 719
 720 void wxComboBox::OnSize( wxSizeEvent &event )
 721 {
 722     event.Skip();
 723
 724 #if 0
 725     int w = 21;
 726     gtk_widget_set_usize( GTK_COMBO(m_widget)->entry, m_width-w-1, m_height );
 727
 728     gtk_widget_set_uposition( GTK_COMBO(m_widget)->button, m_x+m_width-w, m_y );
 729     gtk_widget_set_usize( GTK_COMBO(m_widget)->button, w, m_height );
 730 #endif // 0
 731 }
 732
 733 void wxComboBox::DoApplyWidgetStyle(GtkRcStyle *style)
 734 {
 735 //    gtk_widget_modify_style( GTK_COMBO(m_widget)->button, syle );
 736     gtk_widget_modify_style( GTK_COMBO(m_widget)->entry, style );
 737     gtk_widget_modify_style( GTK_COMBO(m_widget)->list, style );
 738
 739     GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
 740     GList *child = list->children;
 741     while (child)
 742     {
 743         gtk_widget_modify_style( GTK_WIDGET(child->data), style );
 744
 745         GtkBin *bin = GTK_BIN(child->data);
 746         gtk_widget_modify_style( bin->child, style );
 747
 748         child = child->next;
 749     }
 750 }
 751
 752 GtkWidget* wxComboBox::GetConnectWidget()
 753 {
 754     return GTK_COMBO(m_widget)->entry;
 755 }
 756
 757 bool wxComboBox::IsOwnGtkWindow( GdkWindow *window )
 758 {
 759     return ( (window == GTK_ENTRY( GTK_COMBO(m_widget)->entry )->text_area) ||
 760              (window == GTK_COMBO(m_widget)->button->window ) );
 761 }
 762
 763 wxSize wxComboBox::DoGetBestSize() const
 764 {
 765     wxSize ret( wxControl::DoGetBestSize() );
 766
 767     // we know better our horizontal extent: it depends on the longest string
 768     // in the combobox
 769     ret.x = 0;
 770     if ( m_widget )
 771     {
 772         int width;
 773         size_t count = GetCount();
 774         for ( size_t n = 0; n < count; n++ )
 775         {
 776             GetTextExtent( GetString(n), &width, NULL, NULL, NULL );
 777             if ( width > ret.x )
 778                 ret.x = width;
 779         }
 780     }
 781
 782     // empty combobox should have some reasonable default size too
 783     if ( ret.x < 100 )
 784         ret.x = 100;
 785
 786     CacheBestSize(ret);
 787     return ret;
 788 }
 789
 790 // static
 791 wxVisualAttributes
 792 wxComboBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 793 {
 794     return GetDefaultAttributesFromGTKWidget(gtk_combo_new, true);
 795 }
 796
 797 #endif