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         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         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     // wxItemContainer already deletes data for us
 331
 332     node->SetData( (wxObject*) clientData );
 333 }
 334
 335 wxClientData* wxComboBox::DoGetItemClientObject( int n ) const
 336 {
 337     wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, wxT("invalid combobox") );
 338
 339     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 340
 341     return node ? (wxClientData*) node->GetData() : NULL;
 342 }
 343
 344 void wxComboBox::Clear()
 345 {
 346     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 347
 348     DisableEvents();
 349
 350     GtkWidget *list = GTK_COMBO(m_widget)->list;
 351     gtk_list_clear_items( GTK_LIST(list), 0, GetCount() );
 352
 353     wxList::compatibility_iterator node = m_clientObjectList.GetFirst();
 354     while (node)
 355     {
 356         wxClientData *cd = (wxClientData*)node->GetData();
 357         if (cd) delete cd;
 358         node = node->GetNext();
 359     }
 360     m_clientObjectList.Clear();
 361
 362     m_clientDataList.Clear();
 363
 364     EnableEvents();
 365 }
 366
 367 void wxComboBox::Delete( int n )
 368 {
 369     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 370
 371     GtkList *listbox = GTK_LIST( GTK_COMBO(m_widget)->list );
 372
 373     GList *child = g_list_nth( listbox->children, n );
 374
 375     if (!child)
 376     {
 377         wxFAIL_MSG(wxT("wrong index"));
 378         return;
 379     }
 380
 381     DisableEvents();
 382
 383     GList *list = g_list_append( (GList*) NULL, child->data );
 384     gtk_list_remove_items( listbox, list );
 385     g_list_free( list );
 386
 387     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 388     if (node)
 389     {
 390         wxClientData *cd = (wxClientData*)node->GetData();
 391         if (cd) delete cd;
 392         m_clientObjectList.Erase( node );
 393     }
 394
 395     node = m_clientDataList.Item( n );
 396     if (node)
 397         m_clientDataList.Erase( node );
 398
 399     EnableEvents();
 400 }
 401
 402 void wxComboBox::SetString(int n, const wxString &text)
 403 {
 404     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 405
 406     GtkWidget *list = GTK_COMBO(m_widget)->list;
 407
 408     GList *child = g_list_nth( GTK_LIST(list)->children, n );
 409     if (child)
 410     {
 411         GtkBin *bin = GTK_BIN( child->data );
 412         GtkLabel *label = GTK_LABEL( bin->child );
 413         gtk_label_set_text(label, wxGTK_CONV(text));
 414     }
 415     else
 416     {
 417         wxFAIL_MSG( wxT("wxComboBox: wrong index") );
 418     }
 419 }
 420
 421 int wxComboBox::FindString( const wxString &item ) const
 422 {
 423     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 424
 425     GtkWidget *list = GTK_COMBO(m_widget)->list;
 426
 427     GList *child = GTK_LIST(list)->children;
 428     int count = 0;
 429     while (child)
 430     {
 431         GtkBin *bin = GTK_BIN( child->data );
 432         GtkLabel *label = GTK_LABEL( bin->child );
 433 #ifdef __WXGTK20__
 434         wxString str( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 435 #else
 436         wxString str( label->label );
 437 #endif
 438         if (item == str)
 439             return count;
 440
 441         count++;
 442         child = child->next;
 443     }
 444
 445     return wxNOT_FOUND;
 446 }
 447
 448 int wxComboBox::GetSelection() const
 449 {
 450     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 451
 452     GtkWidget *list = GTK_COMBO(m_widget)->list;
 453
 454     GList *selection = GTK_LIST(list)->selection;
 455     if (selection)
 456     {
 457         GList *child = GTK_LIST(list)->children;
 458         int count = 0;
 459         while (child)
 460         {
 461             if (child->data == selection->data) return count;
 462             count++;
 463             child = child->next;
 464         }
 465     }
 466
 467     return -1;
 468 }
 469
 470 wxString wxComboBox::GetString( int n ) const
 471 {
 472     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid combobox") );
 473
 474     GtkWidget *list = GTK_COMBO(m_widget)->list;
 475
 476     wxString str;
 477     GList *child = g_list_nth( GTK_LIST(list)->children, n );
 478     if (child)
 479     {
 480         GtkBin *bin = GTK_BIN( child->data );
 481         GtkLabel *label = GTK_LABEL( bin->child );
 482 #ifdef __WXGTK20__
 483         str = wxGTK_CONV_BACK( gtk_label_get_text(label) );
 484 #else
 485         str = wxString( label->label );
 486 #endif
 487     }
 488     else
 489     {
 490         wxFAIL_MSG( wxT("wxComboBox: wrong index") );
 491     }
 492
 493     return str;
 494 }
 495
 496 wxString wxComboBox::GetStringSelection() const
 497 {
 498     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid combobox") );
 499
 500     GtkWidget *list = GTK_COMBO(m_widget)->list;
 501
 502     GList *selection = GTK_LIST(list)->selection;
 503     if (selection)
 504     {
 505         GtkBin *bin = GTK_BIN( selection->data );
 506         GtkLabel *label = GTK_LABEL( bin->child );
 507 #ifdef __WXGTK20__
 508         wxString tmp( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 509 #else
 510         wxString tmp( label->label );
 511 #endif
 512         return tmp;
 513     }
 514
 515     wxFAIL_MSG( wxT("wxComboBox: no selection") );
 516
 517     return wxT("");
 518 }
 519
 520 int wxComboBox::GetCount() const
 521 {
 522     wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid combobox") );
 523
 524     GtkWidget *list = GTK_COMBO(m_widget)->list;
 525
 526     GList *child = GTK_LIST(list)->children;
 527     int count = 0;
 528     while (child) { count++; child = child->next; }
 529     return count;
 530 }
 531
 532 void wxComboBox::SetSelection( int n )
 533 {
 534     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 535
 536     DisableEvents();
 537
 538     GtkWidget *list = GTK_COMBO(m_widget)->list;
 539     gtk_list_unselect_item( GTK_LIST(list), m_prevSelection );
 540     gtk_list_select_item( GTK_LIST(list), n );
 541     m_prevSelection = n;
 542
 543     EnableEvents();
 544 }
 545
 546 bool wxComboBox::SetStringSelection( const wxString &string )
 547 {
 548     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid combobox") );
 549
 550     int res = FindString( string );
 551     if (res == -1) return false;
 552     SetSelection( res );
 553     return true;
 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::DoApplyWidgetStyle(GtkRcStyle *style)
 725 {
 726 //    gtk_widget_modify_style( GTK_COMBO(m_widget)->button, syle );
 727     gtk_widget_modify_style( GTK_COMBO(m_widget)->entry, style );
 728     gtk_widget_modify_style( GTK_COMBO(m_widget)->list, style );
 729
 730     GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
 731     GList *child = list->children;
 732     while (child)
 733     {
 734         gtk_widget_modify_style( GTK_WIDGET(child->data), style );
 735
 736         GtkBin *bin = GTK_BIN(child->data);
 737         gtk_widget_modify_style( bin->child, style );
 738
 739         child = child->next;
 740     }
 741 }
 742
 743 GtkWidget* wxComboBox::GetConnectWidget()
 744 {
 745     return GTK_COMBO(m_widget)->entry;
 746 }
 747
 748 bool wxComboBox::IsOwnGtkWindow( GdkWindow *window )
 749 {
 750     return ( (window == GTK_ENTRY( GTK_COMBO(m_widget)->entry )->text_area) ||
 751              (window == GTK_COMBO(m_widget)->button->window ) );
 752 }
 753
 754 wxSize wxComboBox::DoGetBestSize() const
 755 {
 756     wxSize ret( wxControl::DoGetBestSize() );
 757
 758     // we know better our horizontal extent: it depends on the longest string
 759     // in the combobox
 760     ret.x = 0;
 761     if ( m_widget )
 762     {
 763         int width;
 764         size_t count = GetCount();
 765         for ( size_t n = 0; n < count; n++ )
 766         {
 767             GetTextExtent( GetString(n), &width, NULL, NULL, NULL );
 768             if ( width > ret.x )
 769                 ret.x = width;
 770         }
 771     }
 772
 773     // empty combobox should have some reasonable default size too
 774     if ( ret.x < 100 )
 775         ret.x = 100;
 776     return ret;
 777 }
 778
 779 // static
 780 wxVisualAttributes
 781 wxComboBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 782 {
 783     return GetDefaultAttributesFromGTKWidget(gtk_combo_new, true);
 784 }
 785
 786 #endif