src/gtk/combobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/combobox.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/combobox.h"
  14
  15 #if wxUSE_COMBOBOX
  16
  17 #include "wx/settings.h"
  18 #include "wx/arrstr.h"
  19 #include "wx/intl.h"
  20
  21 #include "wx/textctrl.h"    // for wxEVT_COMMAND_TEXT_UPDATED
  22
  23 #include "wx/gtk/private.h"
  24
  25 //-----------------------------------------------------------------------------
  26 // idle system
  27 //-----------------------------------------------------------------------------
  28
  29 extern void wxapp_install_idle_handler();
  30 extern bool g_isIdle;
  31
  32 //-----------------------------------------------------------------------------
  33 // data
  34 //-----------------------------------------------------------------------------
  35
  36 extern bool   g_blockEventsOnDrag;
  37 static int    g_SelectionBeforePopup = wxID_NONE; // this means the popup is hidden
  38
  39 //-----------------------------------------------------------------------------
  40 //  "changed" - typing and list item matches get changed, select-child
  41 //              if it doesn't match an item then just get a single changed
  42 //-----------------------------------------------------------------------------
  43
  44 extern "C" {
  45 static void
  46 gtkcombo_text_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
  47 {
  48     if (g_isIdle) wxapp_install_idle_handler();
  49
  50     if (combo->m_ignoreNextUpdate)
  51     {
  52         combo->m_ignoreNextUpdate = false;
  53         return;
  54     }
  55
  56     if (!combo->m_hasVMT) return;
  57
  58     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
  59     event.SetString( combo->GetValue() );
  60     event.SetEventObject( combo );
  61     combo->GetEventHandler()->ProcessEvent( event );
  62 }
  63 }
  64
  65 extern "C" {
  66 static void
  67 gtkcombo_dummy_callback(GtkEntry *WXUNUSED(entry), GtkCombo *WXUNUSED(combo))
  68 {
  69 }
  70 }
  71
  72 extern "C" {
  73 static void
  74 gtkcombo_popup_hide_callback(GtkCombo *WXUNUSED(gtk_combo), wxComboBox *combo)
  75 {
  76     // when the popup is hidden, throw a SELECTED event only if the combobox
  77     // selection changed.
  78     const int curSelection = combo->GetCurrentSelection();
  79
  80     const bool hasChanged = curSelection != g_SelectionBeforePopup;
  81
  82     // reset the selection flag to value meaning that it is hidden and do it
  83     // now, before generating the events, so that GetSelection() returns the
  84     // new value from the event handler
  85     g_SelectionBeforePopup = wxID_NONE;
  86
  87     if ( hasChanged )
  88     {
  89         wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
  90         event.SetInt( curSelection );
  91         event.SetString( combo->GetStringSelection() );
  92         event.SetEventObject( combo );
  93         combo->GetEventHandler()->ProcessEvent( event );
  94
  95         // for consistency with the other ports, send TEXT event
  96         wxCommandEvent event2( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
  97         event2.SetString( combo->GetStringSelection() );
  98         event2.SetEventObject( combo );
  99         combo->GetEventHandler()->ProcessEvent( event2 );
 100     }
 101 }
 102 }
 103
 104 extern "C" {
 105 static void
 106 gtkcombo_popup_show_callback(GtkCombo *WXUNUSED(gtk_combo), wxComboBox *combo)
 107 {
 108     // store the combobox selection value before the popup is shown
 109     g_SelectionBeforePopup = combo->GetCurrentSelection();
 110 }
 111 }
 112
 113 //-----------------------------------------------------------------------------
 114 // "select-child" - click/cursor get select-child, changed, select-child
 115 //-----------------------------------------------------------------------------
 116
 117 extern "C" {
 118 static void
 119 gtkcombo_combo_select_child_callback( GtkList *WXUNUSED(list), GtkWidget *WXUNUSED(widget), wxComboBox *combo )
 120 {
 121     if (g_isIdle) wxapp_install_idle_handler();
 122
 123     if (!combo->m_hasVMT) return;
 124
 125     if (g_blockEventsOnDrag) return;
 126
 127     int curSelection = combo->GetCurrentSelection();
 128
 129     if (combo->m_prevSelection == curSelection) return;
 130
 131     GtkWidget *list = GTK_COMBO(combo->m_widget)->list;
 132     gtk_list_unselect_item( GTK_LIST(list), combo->m_prevSelection );
 133
 134     combo->m_prevSelection = curSelection;
 135
 136     // Quickly set the value of the combo box
 137     // as GTK+ does that only AFTER the event
 138     // is sent.
 139     g_signal_handlers_disconnect_by_func (GTK_COMBO (combo->GetHandle())->entry,
 140                                           (gpointer) gtkcombo_text_changed_callback,
 141                                           combo);
 142     combo->SetValue( combo->GetStringSelection() );
 143     g_signal_connect_after (GTK_COMBO (combo->GetHandle())->entry, "changed",
 144                             G_CALLBACK (gtkcombo_text_changed_callback), combo);
 145
 146     // throw a SELECTED event only if the combobox popup is hidden (wxID_NONE)
 147     // because when combobox popup is shown, gtkcombo_combo_select_child_callback is
 148     // called each times the mouse is over an item with a pressed button so a lot
 149     // of SELECTED event could be generated if the user keep the mouse button down
 150     // and select other items ...
 151     if (g_SelectionBeforePopup == wxID_NONE)
 152     {
 153         wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
 154         event.SetInt( curSelection );
 155         event.SetString( combo->GetStringSelection() );
 156         event.SetEventObject( combo );
 157         combo->GetEventHandler()->ProcessEvent( event );
 158
 159         // for consistency with the other ports, don't generate text update
 160         // events while the user is browsing the combobox neither
 161         wxCommandEvent event2( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
 162         event2.SetString( combo->GetValue() );
 163         event2.SetEventObject( combo );
 164         combo->GetEventHandler()->ProcessEvent( event2 );
 165     }
 166 }
 167 }
 168
 169 #ifdef __WXGTK24__
 170 extern "C" {
 171 static void
 172 gtkcombobox_text_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
 173 {
 174     if (g_isIdle) wxapp_install_idle_handler();
 175
 176     if (!combo->m_hasVMT) return;
 177
 178     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
 179     event.SetString( combo->GetValue() );
 180     event.SetEventObject( combo );
 181     combo->GetEventHandler()->ProcessEvent( event );
 182 }
 183 }
 184
 185 extern "C" {
 186 static void
 187 gtkcombobox_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
 188 {
 189     if (g_isIdle) wxapp_install_idle_handler();
 190
 191     if (!combo->m_hasVMT) return;
 192
 193     wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
 194     event.SetInt( combo->GetSelection() );
 195     event.SetString( combo->GetStringSelection() );
 196     event.SetEventObject( combo );
 197     combo->GetEventHandler()->ProcessEvent( event );
 198 }
 199 }
 200 #endif
 201
 202 //-----------------------------------------------------------------------------
 203 // wxComboBox
 204 //-----------------------------------------------------------------------------
 205
 206 IMPLEMENT_DYNAMIC_CLASS(wxComboBox,wxControl)
 207
 208 BEGIN_EVENT_TABLE(wxComboBox, wxControl)
 209     EVT_SIZE(wxComboBox::OnSize)
 210     EVT_CHAR(wxComboBox::OnChar)
 211
 212     EVT_MENU(wxID_CUT, wxComboBox::OnCut)
 213     EVT_MENU(wxID_COPY, wxComboBox::OnCopy)
 214     EVT_MENU(wxID_PASTE, wxComboBox::OnPaste)
 215     EVT_MENU(wxID_UNDO, wxComboBox::OnUndo)
 216     EVT_MENU(wxID_REDO, wxComboBox::OnRedo)
 217     EVT_MENU(wxID_CLEAR, wxComboBox::OnDelete)
 218     EVT_MENU(wxID_SELECTALL, wxComboBox::OnSelectAll)
 219
 220     EVT_UPDATE_UI(wxID_CUT, wxComboBox::OnUpdateCut)
 221     EVT_UPDATE_UI(wxID_COPY, wxComboBox::OnUpdateCopy)
 222     EVT_UPDATE_UI(wxID_PASTE, wxComboBox::OnUpdatePaste)
 223     EVT_UPDATE_UI(wxID_UNDO, wxComboBox::OnUpdateUndo)
 224     EVT_UPDATE_UI(wxID_REDO, wxComboBox::OnUpdateRedo)
 225     EVT_UPDATE_UI(wxID_CLEAR, wxComboBox::OnUpdateDelete)
 226     EVT_UPDATE_UI(wxID_SELECTALL, wxComboBox::OnUpdateSelectAll)
 227 END_EVENT_TABLE()
 228
 229 bool wxComboBox::Create( wxWindow *parent, wxWindowID id,
 230                          const wxString& value,
 231                          const wxPoint& pos, const wxSize& size,
 232                          const wxArrayString& choices,
 233                          long style, const wxValidator& validator,
 234                          const wxString& name )
 235 {
 236     wxCArrayString chs(choices);
 237
 238     return Create( parent, id, value, pos, size, chs.GetCount(),
 239                    chs.GetStrings(), style, validator, name );
 240 }
 241
 242 bool wxComboBox::Create( wxWindow *parent, wxWindowID id, const wxString& value,
 243                          const wxPoint& pos, const wxSize& size,
 244                          int n, const wxString choices[],
 245                          long style, const wxValidator& validator,
 246                          const wxString& name )
 247 {
 248     m_ignoreNextUpdate = false;
 249     m_needParent = true;
 250     m_acceptsFocus = true;
 251     m_prevSelection = 0;
 252
 253     if (!PreCreation( parent, pos, size ) ||
 254         !CreateBase( parent, id, pos, size, style, validator, name ))
 255     {
 256         wxFAIL_MSG( wxT("wxComboBox creation failed") );
 257         return false;
 258     }
 259
 260 #ifdef __WXGTK24__
 261     if (!gtk_check_version(2,4,0))
 262     {
 263         m_widget = gtk_combo_box_entry_new_text();
 264         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 265
 266         gtk_entry_set_editable( GTK_ENTRY( GTK_BIN(m_widget)->child ), TRUE );
 267
 268         for (int i = 0; i < n; i++)
 269         {
 270             gtk_combo_box_append_text( combobox,  wxGTK_CONV( choices[i] ) );
 271
 272             m_clientDataList.Append( (wxObject*)NULL );
 273             m_clientObjectList.Append( (wxObject*)NULL );
 274         }
 275     }
 276     else
 277 #endif
 278     {
 279         m_widget = gtk_combo_new();
 280         GtkCombo* combo = GTK_COMBO(m_widget);
 281
 282         // Disable GTK's broken events ...
 283         g_signal_handler_disconnect (combo->entry, combo->entry_change_id);
 284         // ... and add surrogate handler.
 285         combo->entry_change_id = g_signal_connect (combo->entry, "changed",
 286                                                G_CALLBACK (gtkcombo_dummy_callback),
 287                                                combo);
 288
 289         // make it more useable
 290         gtk_combo_set_use_arrows_always( GTK_COMBO(m_widget), TRUE );
 291
 292         // and case-sensitive
 293         gtk_combo_set_case_sensitive( GTK_COMBO(m_widget), TRUE );
 294
 295         if (style & wxNO_BORDER)
 296             g_object_set( GTK_ENTRY( combo->entry ), "has-frame", FALSE, NULL );
 297
 298         GtkWidget *list = combo->list;
 299
 300         for (int i = 0; i < n; i++)
 301         {
 302             GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( choices[i] ) );
 303
 304             m_clientDataList.Append( (wxObject*)NULL );
 305             m_clientObjectList.Append( (wxObject*)NULL );
 306
 307             gtk_container_add( GTK_CONTAINER(list), list_item );
 308
 309             gtk_widget_show( list_item );
 310         }
 311     }
 312
 313
 314     m_parent->DoAddChild( this );
 315
 316     GtkEntry *entry = NULL;
 317 #ifdef __WXGTK24__
 318     if (!gtk_check_version(2,4,0))
 319         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 320     else
 321 #endif
 322         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 323
 324     m_focusWidget = GTK_WIDGET( entry );
 325
 326     PostCreation(size);
 327
 328 #ifdef __WXGTK24__
 329     if (!gtk_check_version(2,4,0))
 330         ConnectWidget( m_widget );
 331     else
 332 #endif
 333         ConnectWidget( GTK_COMBO(m_widget)->button );
 334
 335 #ifdef __WXGTK24__
 336     if (!gtk_check_version(2,4,0))
 337     {
 338         gtk_entry_set_text( entry, wxGTK_CONV(value) );
 339
 340         if (style & wxCB_READONLY)
 341             gtk_entry_set_editable( entry, FALSE );
 342
 343         g_signal_connect_after (entry, "changed",
 344                             G_CALLBACK (gtkcombobox_text_changed_callback), this);
 345
 346         g_signal_connect_after (m_widget, "changed",
 347                             G_CALLBACK (gtkcombobox_changed_callback), this);
 348     }
 349     else
 350 #endif
 351     {
 352         GtkCombo *combo = GTK_COMBO(m_widget);
 353         // MSW's combo box shows the value and the selection is -1
 354         gtk_entry_set_text( entry, wxGTK_CONV(value) );
 355         gtk_list_unselect_all( GTK_LIST(combo->list) );
 356
 357         if (style & wxCB_READONLY)
 358             gtk_entry_set_editable( entry, FALSE );
 359
 360         // "show" and "hide" events are generated when user click on the combobox button which popups a list
 361         // this list is the "popwin" gtk widget
 362         g_signal_connect (GTK_COMBO(combo)->popwin, "hide",
 363                       G_CALLBACK (gtkcombo_popup_hide_callback), this);
 364         g_signal_connect (GTK_COMBO(combo)->popwin, "show",
 365                       G_CALLBACK (gtkcombo_popup_show_callback), this);
 366         g_signal_connect_after (combo->list, "select-child",
 367                             G_CALLBACK (gtkcombo_combo_select_child_callback),
 368                             this);
 369         g_signal_connect_after (entry, "changed",
 370                             G_CALLBACK (gtkcombo_text_changed_callback), this);
 371
 372         // This is required for tool bar support
 373         // Doesn't currently work
 374 //        wxSize setsize = GetSize();
 375 //        gtk_widget_set_size_request( m_widget, setsize.x, setsize.y );
 376     }
 377
 378     SetBestSize(size); // need this too because this is a wxControlWithItems
 379
 380
 381     return true;
 382 }
 383
 384 wxComboBox::~wxComboBox()
 385 {
 386     wxList::compatibility_iterator node = m_clientObjectList.GetFirst();
 387     while (node)
 388     {
 389         wxClientData *cd = (wxClientData*)node->GetData();
 390         if (cd) delete cd;
 391         node = node->GetNext();
 392     }
 393     m_clientObjectList.Clear();
 394
 395     m_clientDataList.Clear();
 396 }
 397
 398 void wxComboBox::SetFocus()
 399 {
 400     if ( m_hasFocus )
 401     {
 402         // don't do anything if we already have focus
 403         return;
 404     }
 405
 406     gtk_widget_grab_focus( m_focusWidget );
 407 }
 408
 409 int wxComboBox::DoAppend( const wxString &item )
 410 {
 411     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 412
 413 #ifdef __WXGTK24__
 414     if (!gtk_check_version(2,4,0))
 415     {
 416         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 417         gtk_combo_box_append_text( combobox,  wxGTK_CONV( item ) );
 418     }
 419     else
 420 #endif
 421     {
 422         DisableEvents();
 423
 424         GtkWidget *list = GTK_COMBO(m_widget)->list;
 425         GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
 426
 427         gtk_container_add( GTK_CONTAINER(list), list_item );
 428
 429         if (GTK_WIDGET_REALIZED(m_widget))
 430         {
 431             gtk_widget_realize( list_item );
 432             gtk_widget_realize( GTK_BIN(list_item)->child );
 433         }
 434
 435         // Apply current widget style to the new list_item
 436         GtkRcStyle *style = CreateWidgetStyle();
 437         if (style)
 438         {
 439             gtk_widget_modify_style( GTK_WIDGET( list_item ), style );
 440             GtkBin *bin = GTK_BIN( list_item );
 441             GtkWidget *label = GTK_WIDGET( bin->child );
 442             gtk_widget_modify_style( label, style );
 443             gtk_rc_style_unref( style );
 444         }
 445
 446         gtk_widget_show( list_item );
 447
 448         EnableEvents();
 449     }
 450
 451     const int count = GetCount();
 452
 453     if ( (int)m_clientDataList.GetCount() < count )
 454         m_clientDataList.Append( (wxObject*) NULL );
 455     if ( (int)m_clientObjectList.GetCount() < count )
 456         m_clientObjectList.Append( (wxObject*) NULL );
 457
 458     InvalidateBestSize();
 459
 460     return count - 1;
 461 }
 462
 463 int wxComboBox::DoInsert( const wxString &item, int pos )
 464 {
 465     wxCHECK_MSG( !(GetWindowStyle() & wxCB_SORT), -1,
 466                     wxT("can't insert into sorted list"));
 467
 468     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 469
 470     int count = GetCount();
 471     wxCHECK_MSG( (pos >= 0) && (pos <= count), -1, wxT("invalid index") );
 472
 473     if (pos == count)
 474         return Append(item);
 475
 476 #ifdef __WXGTK24__
 477     if (!gtk_check_version(2,4,0))
 478     {
 479         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 480         gtk_combo_box_insert_text( combobox, pos, wxGTK_CONV( item ) );
 481     }
 482     else
 483 #endif
 484     {
 485         DisableEvents();
 486
 487         GtkWidget *list = GTK_COMBO(m_widget)->list;
 488         GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
 489
 490         GList *gitem_list = g_list_alloc ();
 491         gitem_list->data = list_item;
 492         gtk_list_insert_items( GTK_LIST (list), gitem_list, pos );
 493
 494         if (GTK_WIDGET_REALIZED(m_widget))
 495         {
 496             gtk_widget_realize( list_item );
 497             gtk_widget_realize( GTK_BIN(list_item)->child );
 498
 499             ApplyWidgetStyle();
 500         }
 501
 502         gtk_widget_show( list_item );
 503
 504         EnableEvents();
 505     }
 506
 507     count = GetCount();
 508
 509     if ( (int)m_clientDataList.GetCount() < count )
 510         m_clientDataList.Insert( pos, (wxObject*) NULL );
 511     if ( (int)m_clientObjectList.GetCount() < count )
 512         m_clientObjectList.Insert( pos, (wxObject*) NULL );
 513
 514     InvalidateBestSize();
 515
 516     return pos;
 517 }
 518
 519 void wxComboBox::DoSetItemClientData( int n, void* clientData )
 520 {
 521     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 522
 523     wxList::compatibility_iterator node = m_clientDataList.Item( n );
 524     if (!node) return;
 525
 526     node->SetData( (wxObject*) clientData );
 527 }
 528
 529 void* wxComboBox::DoGetItemClientData( int n ) const
 530 {
 531     wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid combobox") );
 532
 533     wxList::compatibility_iterator node = m_clientDataList.Item( n );
 534
 535     return node ? node->GetData() : NULL;
 536 }
 537
 538 void wxComboBox::DoSetItemClientObject( int n, wxClientData* clientData )
 539 {
 540     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 541
 542     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 543     if (!node) return;
 544
 545     // wxItemContainer already deletes data for us
 546
 547     node->SetData( (wxObject*) clientData );
 548 }
 549
 550 wxClientData* wxComboBox::DoGetItemClientObject( int n ) const
 551 {
 552     wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, wxT("invalid combobox") );
 553
 554     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 555
 556     return node ? (wxClientData*) node->GetData() : NULL;
 557 }
 558
 559 void wxComboBox::Clear()
 560 {
 561     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 562
 563     DisableEvents();
 564
 565 #ifdef __WXGTK24__
 566     if (!gtk_check_version(2,4,0))
 567     {
 568         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 569         int i;
 570         for (i = 0; i++; i < GetCount())
 571             gtk_combo_box_remove_text( combobox, 0 );
 572     }
 573     else
 574 #endif
 575     {
 576         GtkWidget *list = GTK_COMBO(m_widget)->list;
 577         gtk_list_clear_items( GTK_LIST(list), 0, GetCount() );
 578     }
 579
 580     wxList::compatibility_iterator node = m_clientObjectList.GetFirst();
 581     while (node)
 582     {
 583         wxClientData *cd = (wxClientData*)node->GetData();
 584         if (cd) delete cd;
 585         node = node->GetNext();
 586     }
 587     m_clientObjectList.Clear();
 588
 589     m_clientDataList.Clear();
 590
 591     EnableEvents();
 592
 593     InvalidateBestSize();
 594 }
 595
 596 void wxComboBox::Delete( int n )
 597 {
 598     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 599
 600 #ifdef __WXGTK24__
 601     if (!gtk_check_version(2,4,0))
 602     {
 603         wxCHECK_RET( (n >= 0) && (n <= GetCount()), wxT("invalid index") );
 604
 605         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 606         gtk_combo_box_remove_text( combobox, n );
 607     }
 608     else
 609 #endif
 610     {
 611         GtkList *listbox = GTK_LIST( GTK_COMBO(m_widget)->list );
 612
 613         GList *child = g_list_nth( listbox->children, n );
 614
 615         if (!child)
 616         {
 617             wxFAIL_MSG(wxT("wrong index"));
 618             return;
 619         }
 620
 621         DisableEvents();
 622
 623         GList *list = g_list_append( (GList*) NULL, child->data );
 624         gtk_list_remove_items( listbox, list );
 625         g_list_free( list );
 626
 627         EnableEvents();
 628     }
 629
 630     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 631     if (node)
 632     {
 633         wxClientData *cd = (wxClientData*)node->GetData();
 634         if (cd) delete cd;
 635         m_clientObjectList.Erase( node );
 636     }
 637
 638     node = m_clientDataList.Item( n );
 639     if (node)
 640         m_clientDataList.Erase( node );
 641
 642     InvalidateBestSize();
 643 }
 644
 645 void wxComboBox::SetString(int n, const wxString &text)
 646 {
 647     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 648
 649 #ifdef __WXGTK24__
 650     if (!gtk_check_version(2,4,0))
 651     {
 652         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 653         wxCHECK_RET( (n >= 0) && (n <= GetCount()), wxT("invalid index") );
 654
 655         GtkTreeModel *model = gtk_combo_box_get_model( combobox );
 656         GtkTreeIter iter;
 657         if (gtk_tree_model_iter_nth_child (model, &iter, NULL, n))
 658         {
 659             GValue value = { 0, };
 660             g_value_init( &value, G_TYPE_STRING );
 661             g_value_set_string( &value, wxGTK_CONV( text ) );
 662             gtk_list_store_set_value( GTK_LIST_STORE(model), &iter, 0, &value );
 663             g_value_unset( &value );
 664         }
 665     }
 666     else
 667 #endif
 668     {
 669         GtkWidget *list = GTK_COMBO(m_widget)->list;
 670
 671         GList *child = g_list_nth( GTK_LIST(list)->children, n );
 672         if (child)
 673         {
 674             GtkBin *bin = GTK_BIN( child->data );
 675             GtkLabel *label = GTK_LABEL( bin->child );
 676             gtk_label_set_text(label, wxGTK_CONV(text));
 677         }
 678         else
 679         {
 680             wxFAIL_MSG( wxT("wxComboBox: wrong index") );
 681         }
 682     }
 683
 684     InvalidateBestSize();
 685 }
 686
 687 int wxComboBox::FindString( const wxString &item, bool bCase ) const
 688 {
 689     wxCHECK_MSG( m_widget != NULL, wxNOT_FOUND, wxT("invalid combobox") );
 690
 691 #ifdef __WXGTK24__
 692     if (!gtk_check_version(2,4,0))
 693     {
 694         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 695         GtkTreeModel* model = gtk_combo_box_get_model( combobox );
 696         GtkTreeIter iter;
 697         gtk_tree_model_get_iter_first( model, &iter );
 698         if (!gtk_list_store_iter_is_valid(GTK_LIST_STORE(model), &iter ))
 699             return -1;
 700         int count = 0;
 701         do
 702         {
 703             GValue value = { 0, };
 704             gtk_tree_model_get_value( model, &iter, 0, &value );
 705             wxString str = wxGTK_CONV_BACK( g_value_get_string( &value ) );
 706             g_value_unset( &value );
 707
 708             if (item.IsSameAs( str, bCase ) )
 709                 return count;
 710
 711             count++;
 712
 713         } while (gtk_tree_model_iter_next( model, &iter ));
 714     }
 715     else
 716 #endif
 717     {
 718         GtkWidget *list = GTK_COMBO(m_widget)->list;
 719
 720         GList *child = GTK_LIST(list)->children;
 721         int count = 0;
 722         while (child)
 723         {
 724             GtkBin *bin = GTK_BIN( child->data );
 725             GtkLabel *label = GTK_LABEL( bin->child );
 726             wxString str( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 727
 728             if (item.IsSameAs( str , bCase ) )
 729                 return count;
 730
 731             count++;
 732             child = child->next;
 733         }
 734     }
 735
 736     return wxNOT_FOUND;
 737 }
 738
 739 int wxComboBox::GetSelection() const
 740 {
 741 #ifdef __WXGTK24__
 742     if (!gtk_check_version(2,4,0))
 743     {
 744         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 745         return gtk_combo_box_get_active( combobox );
 746     }
 747     else
 748 #endif
 749         // if the popup is currently opened, use the selection as it had been
 750         // before it dropped down
 751         return g_SelectionBeforePopup == wxID_NONE ? GetCurrentSelection()
 752                                                : g_SelectionBeforePopup;
 753 }
 754
 755 int wxComboBox::GetCurrentSelection() const
 756 {
 757     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 758
 759 #ifdef __WXGTK24__
 760     if (!gtk_check_version(2,4,0))
 761     {
 762         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 763         return gtk_combo_box_get_active( combobox );
 764     }
 765     else
 766 #endif
 767     {
 768         GtkWidget *list = GTK_COMBO(m_widget)->list;
 769
 770         GList *selection = GTK_LIST(list)->selection;
 771         if (selection)
 772         {
 773             GList *child = GTK_LIST(list)->children;
 774             int count = 0;
 775             while (child)
 776             {
 777                 if (child->data == selection->data) return count;
 778                 count++;
 779                 child = child->next;
 780             }
 781         }
 782     }
 783
 784     return -1;
 785 }
 786
 787 wxString wxComboBox::GetString( int n ) const
 788 {
 789     wxCHECK_MSG( m_widget != NULL, wxEmptyString, wxT("invalid combobox") );
 790
 791     wxString str;
 792
 793 #ifdef __WXGTK24__
 794     if (!gtk_check_version(2,4,0))
 795     {
 796         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 797         GtkTreeModel *model = gtk_combo_box_get_model( combobox );
 798         GtkTreeIter iter;
 799         if (gtk_tree_model_iter_nth_child (model, &iter, NULL, n))
 800         {
 801             GValue value = { 0, };
 802             gtk_tree_model_get_value( model, &iter, 0, &value );
 803             wxString tmp = wxGTK_CONV_BACK( g_value_get_string( &value ) );
 804             g_value_unset( &value );
 805             return tmp;
 806         }
 807     }
 808     else
 809 #endif
 810     {
 811         GtkWidget *list = GTK_COMBO(m_widget)->list;
 812
 813         GList *child = g_list_nth( GTK_LIST(list)->children, n );
 814         if (child)
 815         {
 816             GtkBin *bin = GTK_BIN( child->data );
 817             GtkLabel *label = GTK_LABEL( bin->child );
 818             str = wxGTK_CONV_BACK( gtk_label_get_text(label) );
 819         }
 820         else
 821         {
 822             wxFAIL_MSG( wxT("wxComboBox: wrong index") );
 823         }
 824     }
 825
 826     return str;
 827 }
 828
 829 wxString wxComboBox::GetStringSelection() const
 830 {
 831     wxCHECK_MSG( m_widget != NULL, wxEmptyString, wxT("invalid combobox") );
 832
 833 #ifdef __WXGTK24__
 834     if (!gtk_check_version(2,4,0))
 835     {
 836         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 837         int sel = gtk_combo_box_get_active( combobox );
 838         if (sel == -1)
 839             return wxEmptyString;
 840         return GetString( sel );
 841     }
 842     else
 843 #endif
 844     {
 845         GtkWidget *list = GTK_COMBO(m_widget)->list;
 846
 847         GList *selection = GTK_LIST(list)->selection;
 848         if (selection)
 849         {
 850             GtkBin *bin = GTK_BIN( selection->data );
 851             GtkLabel *label = GTK_LABEL( bin->child );
 852             wxString tmp( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 853             return tmp;
 854         }
 855
 856         wxFAIL_MSG( wxT("wxComboBox: no selection") );
 857     }
 858
 859     return wxEmptyString;
 860 }
 861
 862 int wxComboBox::GetCount() const
 863 {
 864     wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid combobox") );
 865
 866 #ifdef __WXGTK24__
 867     if (!gtk_check_version(2,4,0))
 868     {
 869         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 870         GtkTreeModel* model = gtk_combo_box_get_model( combobox );
 871         GtkTreeIter iter;
 872         gtk_tree_model_get_iter_first( model, &iter );
 873         if (!gtk_list_store_iter_is_valid(GTK_LIST_STORE(model), &iter ))
 874             return 0;
 875         int ret = 1;
 876         while (gtk_tree_model_iter_next( model, &iter ))
 877             ret++;
 878         return ret;
 879     }
 880     else
 881 #endif
 882     {
 883         GtkWidget *list = GTK_COMBO(m_widget)->list;
 884
 885         GList *child = GTK_LIST(list)->children;
 886         int count = 0;
 887         while (child) { count++; child = child->next; }
 888         return count;
 889     }
 890
 891     return 0;
 892 }
 893
 894 void wxComboBox::SetSelection( int n )
 895 {
 896     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 897
 898     DisableEvents();
 899
 900 #ifdef __WXGTK24__
 901     if (!gtk_check_version(2,4,0))
 902     {
 903         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 904         gtk_combo_box_set_active( combobox, n );
 905     }
 906     else
 907 #endif
 908     {
 909         GtkWidget *list = GTK_COMBO(m_widget)->list;
 910         gtk_list_unselect_item( GTK_LIST(list), m_prevSelection );
 911         gtk_list_select_item( GTK_LIST(list), n );
 912         m_prevSelection = n;
 913     }
 914
 915     EnableEvents();
 916 }
 917
 918 wxString wxComboBox::GetValue() const
 919 {
 920     GtkEntry *entry = NULL;
 921 #ifdef __WXGTK24__
 922     if (!gtk_check_version(2,4,0))
 923         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 924     else
 925 #endif
 926         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 927
 928     wxString tmp( wxGTK_CONV_BACK( gtk_entry_get_text( entry ) ) );
 929
 930 #if 0
 931     for (int i = 0; i < wxStrlen(tmp.c_str()) +1; i++)
 932     {
 933         wxChar c = tmp[i];
 934         printf( "%d ", (int) (c) );
 935     }
 936     printf( "\n" );
 937 #endif
 938
 939     return tmp;
 940 }
 941
 942 void wxComboBox::SetValue( const wxString& value )
 943 {
 944     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 945
 946     GtkEntry *entry = NULL;
 947 #ifdef __WXGTK24__
 948     if (!gtk_check_version(2,4,0))
 949         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 950     else
 951 #endif
 952         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 953
 954     wxString tmp;
 955     if (!value.IsNull()) tmp = value;
 956     gtk_entry_set_text( entry, wxGTK_CONV( tmp ) );
 957
 958     InvalidateBestSize();
 959 }
 960
 961 void wxComboBox::Copy()
 962 {
 963     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 964
 965     GtkEntry *entry = NULL;
 966 #ifdef __WXGTK24__
 967     if (!gtk_check_version(2,4,0))
 968         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 969     else
 970 #endif
 971         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 972
 973     gtk_editable_copy_clipboard(GTK_EDITABLE(entry));
 974 }
 975
 976 void wxComboBox::Cut()
 977 {
 978     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 979
 980     GtkEntry *entry = NULL;
 981 #ifdef __WXGTK24__
 982     if (!gtk_check_version(2,4,0))
 983         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 984     else
 985 #endif
 986         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 987
 988     gtk_editable_cut_clipboard(GTK_EDITABLE(entry));
 989 }
 990
 991 void wxComboBox::Paste()
 992 {
 993     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 994
 995     GtkEntry *entry = NULL;
 996 #ifdef __WXGTK24__
 997     if (!gtk_check_version(2,4,0))
 998         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 999     else
1000 #endif
1001         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1002
1003     gtk_editable_paste_clipboard(GTK_EDITABLE(entry));
1004 }
1005
1006 void wxComboBox::Undo()
1007 {
1008     // TODO
1009 }
1010
1011 void wxComboBox::Redo()
1012 {
1013     // TODO
1014 }
1015
1016 void wxComboBox::SelectAll()
1017 {
1018     SetSelection(0, GetLastPosition());
1019 }
1020
1021 bool wxComboBox::CanUndo() const
1022 {
1023     // TODO
1024     return false;
1025 }
1026
1027 bool wxComboBox::CanRedo() const
1028 {
1029     // TODO
1030     return false;
1031 }
1032
1033 bool wxComboBox::HasSelection() const
1034 {
1035     long from, to;
1036     GetSelection(&from, &to);
1037     return from != to;
1038 }
1039
1040 bool wxComboBox::CanCopy() const
1041 {
1042     // Can copy if there's a selection
1043     return HasSelection();
1044 }
1045
1046 bool wxComboBox::CanCut() const
1047 {
1048     return CanCopy() && IsEditable();
1049 }
1050
1051 bool wxComboBox::CanPaste() const
1052 {
1053     // TODO: check for text on the clipboard
1054     return IsEditable() ;
1055 }
1056
1057 bool wxComboBox::IsEditable() const
1058 {
1059     return !HasFlag(wxCB_READONLY);
1060 }
1061
1062
1063 void wxComboBox::SetInsertionPoint( long pos )
1064 {
1065     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
1066
1067     if ( pos == GetLastPosition() )
1068         pos = -1;
1069
1070     GtkEntry *entry = NULL;
1071 #ifdef __WXGTK24__
1072     if (!gtk_check_version(2,4,0))
1073         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1074     else
1075 #endif
1076         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1077
1078     gtk_entry_set_position( entry, (int)pos );
1079 }
1080
1081 long wxComboBox::GetInsertionPoint() const
1082 {
1083     GtkEntry *entry = NULL;
1084 #ifdef __WXGTK24__
1085     if (!gtk_check_version(2,4,0))
1086         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1087     else
1088 #endif
1089         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1090
1091     return (long) gtk_editable_get_position(GTK_EDITABLE(entry));
1092 }
1093
1094 wxTextPos wxComboBox::GetLastPosition() const
1095 {
1096     GtkEntry *entry = NULL;
1097 #ifdef __WXGTK24__
1098     if (!gtk_check_version(2,4,0))
1099         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1100     else
1101 #endif
1102         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1103
1104     int pos = entry->text_length;
1105     return (long) pos-1;
1106 }
1107
1108 void wxComboBox::Replace( long from, long to, const wxString& value )
1109 {
1110     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
1111
1112     GtkEntry *entry = NULL;
1113 #ifdef __WXGTK24__
1114     if (!gtk_check_version(2,4,0))
1115         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1116     else
1117 #endif
1118         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1119
1120     gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
1121     if (value.IsNull()) return;
1122     gint pos = (gint)to;
1123
1124 #if wxUSE_UNICODE
1125     wxCharBuffer buffer = wxConvUTF8.cWX2MB( value );
1126     gtk_editable_insert_text( GTK_EDITABLE(entry), (const char*) buffer, strlen( (const char*) buffer ), &pos );
1127 #else
1128     gtk_editable_insert_text( GTK_EDITABLE(entry), value.c_str(), value.Length(), &pos );
1129 #endif
1130 }
1131
1132 void wxComboBox::SetSelection( long from, long to )
1133 {
1134     GtkEntry *entry = NULL;
1135 #ifdef __WXGTK24__
1136     if (!gtk_check_version(2,4,0))
1137         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1138     else
1139 #endif
1140         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1141
1142     gtk_editable_select_region( GTK_EDITABLE(entry), (gint)from, (gint)to );
1143 }
1144
1145 void wxComboBox::GetSelection( long* from, long* to ) const
1146 {
1147     GtkEntry *entry = NULL;
1148 #ifdef __WXGTK24__
1149     if (!gtk_check_version(2,4,0))
1150         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1151     else
1152 #endif
1153         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1154
1155     if (IsEditable())
1156     {
1157         GtkEditable *editable = GTK_EDITABLE(entry);
1158         gint start, end;
1159         gtk_editable_get_selection_bounds(editable, & start, & end);
1160         *from = start;
1161         *to = end;
1162     }
1163 }
1164
1165 void wxComboBox::SetEditable( bool editable )
1166 {
1167     GtkEntry *entry = NULL;
1168 #ifdef __WXGTK24__
1169     if (!gtk_check_version(2,4,0))
1170         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1171     else
1172 #endif
1173         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1174
1175     gtk_entry_set_editable( GTK_ENTRY(entry), editable );
1176 }
1177
1178 void wxComboBox::OnChar( wxKeyEvent &event )
1179 {
1180     if ( event.GetKeyCode() == WXK_RETURN )
1181     {
1182         // GTK automatically selects an item if its in the list
1183         wxCommandEvent eventEnter(wxEVT_COMMAND_TEXT_ENTER, GetId());
1184         eventEnter.SetString( GetValue() );
1185         eventEnter.SetInt( GetSelection() );
1186         eventEnter.SetEventObject( this );
1187
1188         if (!GetEventHandler()->ProcessEvent( eventEnter ))
1189         {
1190             // This will invoke the dialog default action, such
1191             // as the clicking the default button.
1192
1193             wxWindow *top_frame = m_parent;
1194             while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1195                 top_frame = top_frame->GetParent();
1196
1197             if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1198             {
1199                 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1200
1201                 if (window->default_widget)
1202                         gtk_widget_activate (window->default_widget);
1203             }
1204         }
1205
1206         // Catch GTK event so that GTK doesn't open the drop
1207         // down list upon RETURN.
1208         return;
1209     }
1210
1211     event.Skip();
1212 }
1213
1214 void wxComboBox::DisableEvents()
1215 {
1216 #ifdef __WXGTK24__
1217     if (!gtk_check_version(2,4,0))
1218     {
1219         g_signal_handlers_disconnect_by_func (GTK_BIN(m_widget)->child,
1220                 (gpointer)gtkcombobox_text_changed_callback, this);
1221
1222         g_signal_handlers_disconnect_by_func (m_widget,
1223                 (gpointer)gtkcombobox_changed_callback, this);
1224     }
1225     else
1226 #endif
1227     {
1228         g_signal_handlers_disconnect_by_func (GTK_COMBO(m_widget)->list,
1229                 (gpointer) gtkcombo_combo_select_child_callback, this);
1230
1231         g_signal_handlers_disconnect_by_func (GTK_COMBO(m_widget)->entry,
1232                 (gpointer) gtkcombo_text_changed_callback, this);
1233     }
1234 }
1235
1236 void wxComboBox::EnableEvents()
1237 {
1238 #ifdef __WXGTK24__
1239     if (!gtk_check_version(2,4,0))
1240     {
1241         g_signal_connect_after (GTK_BIN(m_widget)->child, "changed",
1242                             G_CALLBACK (gtkcombobox_text_changed_callback), this);
1243
1244         g_signal_connect_after (m_widget, "changed",
1245                             G_CALLBACK (gtkcombobox_changed_callback), this);
1246     }
1247     else
1248 #endif
1249     {
1250         g_signal_connect_after (GTK_COMBO(m_widget)->list, "select-child",
1251                             G_CALLBACK (gtkcombo_combo_select_child_callback),
1252                             this);
1253         g_signal_connect_after (GTK_COMBO(m_widget)->entry, "changed",
1254                             G_CALLBACK (gtkcombo_text_changed_callback),
1255                             this );
1256     }
1257 }
1258
1259 void wxComboBox::OnSize( wxSizeEvent &event )
1260 {
1261 #ifdef __WXGTK24__
1262     if (!gtk_check_version(2,4,0))
1263     {
1264         // Do nothing
1265     }
1266     else
1267 #endif
1268     {
1269         // NB: In some situations (e.g. on non-first page of a wizard, if the
1270         //     size used is default size), GtkCombo widget is resized correctly,
1271         //     but it's look is not updated, it's rendered as if it was much wider.
1272         //     No other widgets are affected, so it looks like a bug in GTK+.
1273         //     Manually requesting resize calculation (as gtk_pizza_set_size does)
1274         //     fixes it.
1275         if (GTK_WIDGET_VISIBLE(m_widget))
1276             gtk_widget_queue_resize(m_widget);
1277     }
1278
1279     event.Skip();
1280 }
1281
1282 void wxComboBox::DoApplyWidgetStyle(GtkRcStyle *style)
1283 {
1284 #ifdef __WXGTK24__
1285     if (!gtk_check_version(2,4,0))
1286     {
1287         // Do nothing
1288     }
1289     else
1290 #endif
1291     {
1292 //    gtk_widget_modify_style( GTK_COMBO(m_widget)->button, syle );
1293
1294         gtk_widget_modify_style( GTK_COMBO(m_widget)->entry, style );
1295         gtk_widget_modify_style( GTK_COMBO(m_widget)->list, style );
1296
1297         GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
1298         GList *child = list->children;
1299         while (child)
1300         {
1301             gtk_widget_modify_style( GTK_WIDGET(child->data), style );
1302
1303             GtkBin *bin = GTK_BIN(child->data);
1304             gtk_widget_modify_style( bin->child, style );
1305
1306             child = child->next;
1307         }
1308     }
1309 }
1310
1311 GtkWidget* wxComboBox::GetConnectWidget()
1312 {
1313     GtkEntry *entry = NULL;
1314 #ifdef __WXGTK24__
1315     if (!gtk_check_version(2,4,0))
1316         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1317     else
1318 #endif
1319         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1320
1321     return GTK_WIDGET( entry );
1322 }
1323
1324 bool wxComboBox::IsOwnGtkWindow( GdkWindow *window )
1325 {
1326     GtkEntry *entry = NULL;
1327 #ifdef __WXGTK24__
1328     if (!gtk_check_version(2,4,0))
1329     {
1330         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1331         return (window == entry->text_area);
1332     }
1333     else
1334 #endif
1335     {
1336         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1337         return ( (window == entry->text_area) ||
1338                  (window == GTK_COMBO(m_widget)->button->window ) );
1339     }
1340 }
1341
1342 wxSize wxComboBox::DoGetBestSize() const
1343 {
1344     wxSize ret( wxControl::DoGetBestSize() );
1345
1346     // we know better our horizontal extent: it depends on the longest string
1347     // in the combobox
1348     if ( m_widget )
1349     {
1350         int width;
1351         size_t count = GetCount();
1352         for ( size_t n = 0; n < count; n++ )
1353         {
1354             GetTextExtent( GetString(n), &width, NULL, NULL, NULL );
1355             if ( width > ret.x )
1356                 ret.x = width;
1357         }
1358     }
1359
1360     // empty combobox should have some reasonable default size too
1361     if ( ret.x < 100 )
1362         ret.x = 100;
1363
1364     CacheBestSize(ret);
1365     return ret;
1366 }
1367
1368 // static
1369 wxVisualAttributes
1370 wxComboBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1371 {
1372 #ifdef __WXGTK24__
1373     if (!gtk_check_version(2,4,0))
1374         return GetDefaultAttributesFromGTKWidget(gtk_combo_box_entry_new, true);
1375     else
1376 #endif
1377         return GetDefaultAttributesFromGTKWidget(gtk_combo_new, true);
1378 }
1379
1380 // ----------------------------------------------------------------------------
1381 // standard event handling
1382 // ----------------------------------------------------------------------------
1383
1384 void wxComboBox::OnCut(wxCommandEvent& WXUNUSED(event))
1385 {
1386     Cut();
1387 }
1388
1389 void wxComboBox::OnCopy(wxCommandEvent& WXUNUSED(event))
1390 {
1391     Copy();
1392 }
1393
1394 void wxComboBox::OnPaste(wxCommandEvent& WXUNUSED(event))
1395 {
1396     Paste();
1397 }
1398
1399 void wxComboBox::OnUndo(wxCommandEvent& WXUNUSED(event))
1400 {
1401     Undo();
1402 }
1403
1404 void wxComboBox::OnRedo(wxCommandEvent& WXUNUSED(event))
1405 {
1406     Redo();
1407 }
1408
1409 void wxComboBox::OnDelete(wxCommandEvent& WXUNUSED(event))
1410 {
1411     long from, to;
1412     GetSelection(& from, & to);
1413     if (from != -1 && to != -1)
1414         Remove(from, to);
1415 }
1416
1417 void wxComboBox::OnSelectAll(wxCommandEvent& WXUNUSED(event))
1418 {
1419     SetSelection(-1, -1);
1420 }
1421
1422 void wxComboBox::OnUpdateCut(wxUpdateUIEvent& event)
1423 {
1424     event.Enable( CanCut() );
1425 }
1426
1427 void wxComboBox::OnUpdateCopy(wxUpdateUIEvent& event)
1428 {
1429     event.Enable( CanCopy() );
1430 }
1431
1432 void wxComboBox::OnUpdatePaste(wxUpdateUIEvent& event)
1433 {
1434     event.Enable( CanPaste() );
1435 }
1436
1437 void wxComboBox::OnUpdateUndo(wxUpdateUIEvent& event)
1438 {
1439     event.Enable( CanUndo() );
1440 }
1441
1442 void wxComboBox::OnUpdateRedo(wxUpdateUIEvent& event)
1443 {
1444     event.Enable( CanRedo() );
1445 }
1446
1447 void wxComboBox::OnUpdateDelete(wxUpdateUIEvent& event)
1448 {
1449     event.Enable(HasSelection() && IsEditable()) ;
1450 }
1451
1452 void wxComboBox::OnUpdateSelectAll(wxUpdateUIEvent& event)
1453 {
1454     event.Enable(GetLastPosition() > 0);
1455 }
1456
1457 #endif