src/gtk1/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();
 175     InheritAttributes();
 176
 177     ConnectWidget( combo->button );
 178
 179     // MSW's combo box shows the value and the selection is -1
 180     gtk_entry_set_text( GTK_ENTRY(combo->entry), wxGTK_CONV(value) );
 181     gtk_list_unselect_all( GTK_LIST(combo->list) );
 182
 183     if (style & wxCB_READONLY)
 184         gtk_entry_set_editable( GTK_ENTRY( combo->entry ), FALSE );
 185
 186     gtk_signal_connect( GTK_OBJECT(combo->entry), "changed",
 187       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
 188
 189     gtk_signal_connect( GTK_OBJECT(combo->list), "select-child",
 190       GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
 191
 192     wxSize size_best( DoGetBestSize() );
 193     wxSize new_size( size );
 194     if (new_size.x == -1)
 195         new_size.x = size_best.x;
 196     if (new_size.y == -1)
 197         new_size.y = size_best.y;
 198     if (new_size.y > size_best.y)
 199         new_size.y = size_best.y;
 200     if ((new_size.x != size.x) || (new_size.y != size.y))
 201     {
 202         SetSize( new_size.x, new_size.y );
 203
 204         // This is required for tool bar support
 205         gtk_widget_set_usize( m_widget, new_size.x, new_size.y );
 206     }
 207
 208     Show( TRUE );
 209
 210     return TRUE;
 211 }
 212
 213 wxComboBox::~wxComboBox()
 214 {
 215     wxList::compatibility_iterator node = m_clientObjectList.GetFirst();
 216     while (node)
 217     {
 218         wxClientData *cd = (wxClientData*)node->GetData();
 219         if (cd) delete cd;
 220         node = node->GetNext();
 221     }
 222     m_clientObjectList.Clear();
 223
 224     m_clientDataList.Clear();
 225 }
 226
 227 void wxComboBox::SetFocus()
 228 {
 229     if ( m_hasFocus )
 230     {
 231         // don't do anything if we already have focus
 232         return;
 233     }
 234
 235     gtk_widget_grab_focus( m_focusWidget );
 236 }
 237
 238 int wxComboBox::DoAppend( const wxString &item )
 239 {
 240     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 241
 242     DisableEvents();
 243
 244     GtkWidget *list = GTK_COMBO(m_widget)->list;
 245
 246     GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
 247
 248     gtk_container_add( GTK_CONTAINER(list), list_item );
 249
 250     if (GTK_WIDGET_REALIZED(m_widget))
 251     {
 252         gtk_widget_realize( list_item );
 253         gtk_widget_realize( GTK_BIN(list_item)->child );
 254
 255         if (m_widgetStyle) ApplyWidgetStyle();
 256     }
 257
 258     gtk_widget_show( list_item );
 259
 260     const int count = GetCount();
 261
 262     if ( (int)m_clientDataList.GetCount() < count )
 263     m_clientDataList.Append( (wxObject*) NULL );
 264     if ( (int)m_clientObjectList.GetCount() < count )
 265     m_clientObjectList.Append( (wxObject*) NULL );
 266
 267     EnableEvents();
 268
 269     return count - 1;
 270 }
 271
 272 int wxComboBox::DoInsert( const wxString &item, int pos )
 273 {
 274     wxCHECK_MSG( !(GetWindowStyle() & wxCB_SORT), -1,
 275                     wxT("can't insert into sorted list"));
 276
 277     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 278
 279     int count = GetCount();
 280     wxCHECK_MSG( (pos >= 0) && (pos <= count), -1, wxT("invalid index") );
 281
 282     if (pos == count)
 283         return Append(item);
 284
 285     DisableEvents();
 286
 287     GtkWidget *list = GTK_COMBO(m_widget)->list;
 288
 289     GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
 290
 291     GList *gitem_list = g_list_alloc ();
 292     gitem_list->data = list_item;
 293     gtk_list_insert_items( GTK_LIST (list), gitem_list, pos );
 294
 295     if (GTK_WIDGET_REALIZED(m_widget))
 296     {
 297         gtk_widget_realize( list_item );
 298         gtk_widget_realize( GTK_BIN(list_item)->child );
 299
 300         if (m_widgetStyle)
 301             ApplyWidgetStyle();
 302     }
 303
 304     gtk_widget_show( list_item );
 305
 306     count = GetCount();
 307
 308     if ( (int)m_clientDataList.GetCount() < count )
 309     m_clientDataList.Insert( pos, (wxObject*) NULL );
 310     if ( (int)m_clientObjectList.GetCount() < count )
 311     m_clientObjectList.Insert( pos, (wxObject*) NULL );
 312
 313     EnableEvents();
 314
 315     return pos;
 316 }
 317
 318 void wxComboBox::DoSetItemClientData( int n, void* clientData )
 319 {
 320     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 321
 322     wxList::compatibility_iterator node = m_clientDataList.Item( n );
 323     if (!node) return;
 324
 325     node->SetData( (wxObject*) clientData );
 326 }
 327
 328 void* wxComboBox::DoGetItemClientData( int n ) const
 329 {
 330     wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid combobox") );
 331
 332     wxList::compatibility_iterator node = m_clientDataList.Item( n );
 333
 334     return node ? node->GetData() : NULL;
 335 }
 336
 337 void wxComboBox::DoSetItemClientObject( int n, wxClientData* clientData )
 338 {
 339     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 340
 341     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 342     if (!node) return;
 343
 344     // wxItemContainer already deletes data for us
 345
 346     node->SetData( (wxObject*) clientData );
 347 }
 348
 349 wxClientData* wxComboBox::DoGetItemClientObject( int n ) const
 350 {
 351     wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, wxT("invalid combobox") );
 352
 353     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 354
 355     return node ? (wxClientData*) node->GetData() : NULL;
 356 }
 357
 358 void wxComboBox::Clear()
 359 {
 360     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 361
 362     DisableEvents();
 363
 364     GtkWidget *list = GTK_COMBO(m_widget)->list;
 365     gtk_list_clear_items( GTK_LIST(list), 0, GetCount() );
 366
 367     wxList::compatibility_iterator node = m_clientObjectList.GetFirst();
 368     while (node)
 369     {
 370         wxClientData *cd = (wxClientData*)node->GetData();
 371         if (cd) delete cd;
 372         node = node->GetNext();
 373     }
 374     m_clientObjectList.Clear();
 375
 376     m_clientDataList.Clear();
 377
 378     EnableEvents();
 379 }
 380
 381 void wxComboBox::Delete( int n )
 382 {
 383     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 384
 385     GtkList *listbox = GTK_LIST( GTK_COMBO(m_widget)->list );
 386
 387     GList *child = g_list_nth( listbox->children, n );
 388
 389     if (!child)
 390     {
 391         wxFAIL_MSG(wxT("wrong index"));
 392         return;
 393     }
 394
 395     DisableEvents();
 396
 397     GList *list = g_list_append( (GList*) NULL, child->data );
 398     gtk_list_remove_items( listbox, list );
 399     g_list_free( list );
 400
 401     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 402     if (node)
 403     {
 404         wxClientData *cd = (wxClientData*)node->GetData();
 405         if (cd) delete cd;
 406         m_clientObjectList.Erase( node );
 407     }
 408
 409     node = m_clientDataList.Item( n );
 410     if (node)
 411         m_clientDataList.Erase( node );
 412
 413     EnableEvents();
 414 }
 415
 416 void wxComboBox::SetString(int n, const wxString &text)
 417 {
 418     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 419
 420     GtkWidget *list = GTK_COMBO(m_widget)->list;
 421
 422     GList *child = g_list_nth( GTK_LIST(list)->children, n );
 423     if (child)
 424     {
 425         GtkBin *bin = GTK_BIN( child->data );
 426         GtkLabel *label = GTK_LABEL( bin->child );
 427         gtk_label_set_text(label, wxGTK_CONV(text));
 428     }
 429     else
 430     {
 431         wxFAIL_MSG( wxT("wxComboBox: wrong index") );
 432     }
 433 }
 434
 435 int wxComboBox::FindString( const wxString &item ) const
 436 {
 437     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 438
 439     GtkWidget *list = GTK_COMBO(m_widget)->list;
 440
 441     GList *child = GTK_LIST(list)->children;
 442     int count = 0;
 443     while (child)
 444     {
 445         GtkBin *bin = GTK_BIN( child->data );
 446         GtkLabel *label = GTK_LABEL( bin->child );
 447 #ifdef __WXGTK20__
 448         wxString str( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 449 #else
 450         wxString str( label->label );
 451 #endif
 452         if (item == str)
 453             return count;
 454
 455         count++;
 456         child = child->next;
 457     }
 458
 459     return wxNOT_FOUND;
 460 }
 461
 462 int wxComboBox::GetSelection() const
 463 {
 464     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 465
 466     GtkWidget *list = GTK_COMBO(m_widget)->list;
 467
 468     GList *selection = GTK_LIST(list)->selection;
 469     if (selection)
 470     {
 471         GList *child = GTK_LIST(list)->children;
 472         int count = 0;
 473         while (child)
 474         {
 475             if (child->data == selection->data) return count;
 476             count++;
 477             child = child->next;
 478         }
 479     }
 480
 481     return -1;
 482 }
 483
 484 wxString wxComboBox::GetString( int n ) const
 485 {
 486     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid combobox") );
 487
 488     GtkWidget *list = GTK_COMBO(m_widget)->list;
 489
 490     wxString str;
 491     GList *child = g_list_nth( GTK_LIST(list)->children, n );
 492     if (child)
 493     {
 494         GtkBin *bin = GTK_BIN( child->data );
 495         GtkLabel *label = GTK_LABEL( bin->child );
 496 #ifdef __WXGTK20__
 497         str = wxGTK_CONV_BACK( gtk_label_get_text(label) );
 498 #else
 499         str = wxString( label->label );
 500 #endif
 501     }
 502     else
 503     {
 504         wxFAIL_MSG( wxT("wxComboBox: wrong index") );
 505     }
 506
 507     return str;
 508 }
 509
 510 wxString wxComboBox::GetStringSelection() const
 511 {
 512     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid combobox") );
 513
 514     GtkWidget *list = GTK_COMBO(m_widget)->list;
 515
 516     GList *selection = GTK_LIST(list)->selection;
 517     if (selection)
 518     {
 519         GtkBin *bin = GTK_BIN( selection->data );
 520         GtkLabel *label = GTK_LABEL( bin->child );
 521 #ifdef __WXGTK20__
 522         wxString tmp( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 523 #else
 524         wxString tmp( label->label );
 525 #endif
 526         return tmp;
 527     }
 528
 529     wxFAIL_MSG( wxT("wxComboBox: no selection") );
 530
 531     return wxT("");
 532 }
 533
 534 int wxComboBox::GetCount() const
 535 {
 536     wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid combobox") );
 537
 538     GtkWidget *list = GTK_COMBO(m_widget)->list;
 539
 540     GList *child = GTK_LIST(list)->children;
 541     int count = 0;
 542     while (child) { count++; child = child->next; }
 543     return count;
 544 }
 545
 546 void wxComboBox::SetSelection( int n )
 547 {
 548     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 549
 550     DisableEvents();
 551
 552     GtkWidget *list = GTK_COMBO(m_widget)->list;
 553     gtk_list_unselect_item( GTK_LIST(list), m_prevSelection );
 554     gtk_list_select_item( GTK_LIST(list), n );
 555     m_prevSelection = n;
 556
 557     EnableEvents();
 558 }
 559
 560 bool wxComboBox::SetStringSelection( const wxString &string )
 561 {
 562     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid combobox") );
 563
 564     int res = FindString( string );
 565     if (res == -1) return false;
 566     SetSelection( res );
 567     return true;
 568 }
 569
 570 wxString wxComboBox::GetValue() const
 571 {
 572     GtkEntry *entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 573     wxString tmp( wxGTK_CONV_BACK( gtk_entry_get_text( entry ) ) );
 574
 575 #if 0
 576     for (int i = 0; i < wxStrlen(tmp.c_str()) +1; i++)
 577     {
 578         wxChar c = tmp[i];
 579         printf( "%d ", (int) (c) );
 580     }
 581     printf( "\n" );
 582 #endif
 583
 584     return tmp;
 585 }
 586
 587 void wxComboBox::SetValue( const wxString& value )
 588 {
 589     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 590
 591     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 592     wxString tmp = wxT("");
 593     if (!value.IsNull()) tmp = value;
 594     gtk_entry_set_text( GTK_ENTRY(entry), wxGTK_CONV( tmp ) );
 595 }
 596
 597 void wxComboBox::Copy()
 598 {
 599     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 600
 601     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 602     gtk_editable_copy_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG );
 603 }
 604
 605 void wxComboBox::Cut()
 606 {
 607     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 608
 609     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 610     gtk_editable_cut_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG );
 611 }
 612
 613 void wxComboBox::Paste()
 614 {
 615     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 616
 617     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 618     gtk_editable_paste_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG);
 619 }
 620
 621 void wxComboBox::SetInsertionPoint( long pos )
 622 {
 623     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 624
 625     if ( pos == GetLastPosition() )
 626         pos = -1;
 627
 628     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 629     gtk_entry_set_position( GTK_ENTRY(entry), (int)pos );
 630 }
 631
 632 long wxComboBox::GetInsertionPoint() const
 633 {
 634     return (long) GET_EDITABLE_POS( GTK_COMBO(m_widget)->entry );
 635 }
 636
 637 long wxComboBox::GetLastPosition() const
 638 {
 639     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 640     int pos = GTK_ENTRY(entry)->text_length;
 641     return (long) pos-1;
 642 }
 643
 644 void wxComboBox::Replace( long from, long to, const wxString& value )
 645 {
 646     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 647
 648     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 649     gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
 650     if (value.IsNull()) return;
 651     gint pos = (gint)to;
 652
 653 #if wxUSE_UNICODE
 654     wxCharBuffer buffer = wxConvUTF8.cWX2MB( value );
 655     gtk_editable_insert_text( GTK_EDITABLE(entry), (const char*) buffer, strlen( (const char*) buffer ), &pos );
 656 #else
 657     gtk_editable_insert_text( GTK_EDITABLE(entry), value.c_str(), value.Length(), &pos );
 658 #endif
 659 }
 660
 661 void wxComboBox::SetSelection( long from, long to )
 662 {
 663     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 664     gtk_editable_select_region( GTK_EDITABLE(entry), (gint)from, (gint)to );
 665 }
 666
 667 void wxComboBox::SetEditable( bool editable )
 668 {
 669     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 670     gtk_entry_set_editable( GTK_ENTRY(entry), editable );
 671 }
 672
 673 void wxComboBox::OnChar( wxKeyEvent &event )
 674 {
 675     if ( event.GetKeyCode() == WXK_RETURN )
 676     {
 677         // GTK automatically selects an item if its in the list
 678         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, GetId());
 679         event.SetString( GetValue() );
 680         event.SetInt( GetSelection() );
 681         event.SetEventObject( this );
 682
 683         if (!GetEventHandler()->ProcessEvent( event ))
 684         {
 685             // This will invoke the dialog default action, such
 686             // as the clicking the default button.
 687
 688             wxWindow *top_frame = m_parent;
 689             while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
 690                 top_frame = top_frame->GetParent();
 691
 692             if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
 693             {
 694                 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
 695
 696                 if (window->default_widget)
 697                     gtk_widget_activate (window->default_widget);
 698             }
 699         }
 700
 701         // Catch GTK event so that GTK doesn't open the drop
 702         // down list upon RETURN.
 703         return;
 704     }
 705
 706     event.Skip();
 707 }
 708
 709 void wxComboBox::DisableEvents()
 710 {
 711     gtk_signal_disconnect_by_func( GTK_OBJECT(GTK_COMBO(m_widget)->list),
 712       GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
 713     gtk_signal_disconnect_by_func( GTK_OBJECT(GTK_COMBO(m_widget)->entry),
 714       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
 715 }
 716
 717 void wxComboBox::EnableEvents()
 718 {
 719     gtk_signal_connect( GTK_OBJECT(GTK_COMBO(m_widget)->list), "select-child",
 720       GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
 721     gtk_signal_connect( GTK_OBJECT(GTK_COMBO(m_widget)->entry), "changed",
 722       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
 723 }
 724
 725 void wxComboBox::OnSize( wxSizeEvent &event )
 726 {
 727     event.Skip();
 728
 729 #if 0
 730     int w = 21;
 731     gtk_widget_set_usize( GTK_COMBO(m_widget)->entry, m_width-w-1, m_height );
 732
 733     gtk_widget_set_uposition( GTK_COMBO(m_widget)->button, m_x+m_width-w, m_y );
 734     gtk_widget_set_usize( GTK_COMBO(m_widget)->button, w, m_height );
 735 #endif // 0
 736 }
 737
 738 void wxComboBox::ApplyWidgetStyle()
 739 {
 740     SetWidgetStyle();
 741
 742 //    gtk_widget_set_style( GTK_COMBO(m_widget)->button, m_widgetStyle );
 743     gtk_widget_set_style( GTK_COMBO(m_widget)->entry, m_widgetStyle );
 744     gtk_widget_set_style( GTK_COMBO(m_widget)->list, m_widgetStyle );
 745
 746     GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
 747     GList *child = list->children;
 748     while (child)
 749     {
 750         gtk_widget_set_style( GTK_WIDGET(child->data), m_widgetStyle );
 751
 752         GtkBin *bin = GTK_BIN(child->data);
 753         gtk_widget_set_style( bin->child, m_widgetStyle );
 754
 755         child = child->next;
 756     }
 757 }
 758
 759 GtkWidget* wxComboBox::GetConnectWidget()
 760 {
 761     return GTK_COMBO(m_widget)->entry;
 762 }
 763
 764 bool wxComboBox::IsOwnGtkWindow( GdkWindow *window )
 765 {
 766     return ( (window == GTK_ENTRY( GTK_COMBO(m_widget)->entry )->text_area) ||
 767              (window == GTK_COMBO(m_widget)->button->window ) );
 768 }
 769
 770 wxSize wxComboBox::DoGetBestSize() const
 771 {
 772     wxSize ret( wxControl::DoGetBestSize() );
 773
 774     // we know better our horizontal extent: it depends on the longest string
 775     // in the combobox
 776     ret.x = 0;
 777     if ( m_widget )
 778     {
 779         int width;
 780         size_t count = GetCount();
 781         for ( size_t n = 0; n < count; n++ )
 782         {
 783             GetTextExtent( GetString(n), &width, NULL, NULL, NULL );
 784             if ( width > ret.x )
 785                 ret.x = width;
 786         }
 787     }
 788
 789     // empty combobox should have some reasonable default size too
 790     if ( ret.x < 100 )
 791         ret.x = 100;
 792     return ret;
 793 }
 794
 795 #endif