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 #if wxUSE_COMBOBOX
  14
  15 #include "wx/combobox.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/intl.h"
  19 #endif
  20
  21 #include "wx/settings.h"
  22 #include "wx/arrstr.h"
  23
  24 #include "wx/textctrl.h"    // for wxEVT_COMMAND_TEXT_UPDATED
  25
  26 // We use GtkCombo which has been deprecated since GTK+ 2.3.0
  27 // in favour of GtkComboBox for <GTK2.4 runtime
  28 // We also use GtkList
  29 #ifdef GTK_DISABLE_DEPRECATED
  30 #undef GTK_DISABLE_DEPRECATED
  31 #endif
  32 #include "wx/gtk/private.h"
  33
  34 //-----------------------------------------------------------------------------
  35 // data
  36 //-----------------------------------------------------------------------------
  37
  38 extern bool   g_blockEventsOnDrag;
  39 static int    g_SelectionBeforePopup = wxID_NONE; // this means the popup is hidden
  40
  41 //-----------------------------------------------------------------------------
  42 //  "changed" - typing and list item matches get changed, select-child
  43 //              if it doesn't match an item then just get a single changed
  44 //-----------------------------------------------------------------------------
  45
  46 extern "C" {
  47 static void
  48 gtkcombo_text_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
  49 {
  50     if (g_isIdle) wxapp_install_idle_handler();
  51
  52     if (combo->m_ignoreNextUpdate)
  53     {
  54         combo->m_ignoreNextUpdate = false;
  55         return;
  56     }
  57
  58     if (!combo->m_hasVMT) return;
  59
  60     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
  61     event.SetString( combo->GetValue() );
  62     event.SetEventObject( combo );
  63     combo->GetEventHandler()->ProcessEvent( event );
  64 }
  65 }
  66
  67 extern "C" {
  68 static void
  69 gtkcombo_dummy_callback(GtkEntry *WXUNUSED(entry), GtkCombo *WXUNUSED(combo))
  70 {
  71 }
  72 }
  73
  74 extern "C" {
  75 static void
  76 gtkcombo_popup_hide_callback(GtkCombo *WXUNUSED(gtk_combo), wxComboBox *combo)
  77 {
  78     // when the popup is hidden, throw a SELECTED event only if the combobox
  79     // selection changed.
  80     const int curSelection = combo->GetCurrentSelection();
  81
  82     const bool hasChanged = curSelection != g_SelectionBeforePopup;
  83
  84     // reset the selection flag to value meaning that it is hidden and do it
  85     // now, before generating the events, so that GetSelection() returns the
  86     // new value from the event handler
  87     g_SelectionBeforePopup = wxID_NONE;
  88
  89     if ( hasChanged )
  90     {
  91         wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
  92         event.SetInt( curSelection );
  93         event.SetString( combo->GetStringSelection() );
  94         event.SetEventObject( combo );
  95         combo->GetEventHandler()->ProcessEvent( event );
  96
  97         // for consistency with the other ports, send TEXT event
  98         wxCommandEvent event2( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
  99         event2.SetString( combo->GetStringSelection() );
 100         event2.SetEventObject( combo );
 101         combo->GetEventHandler()->ProcessEvent( event2 );
 102     }
 103 }
 104 }
 105
 106 extern "C" {
 107 static void
 108 gtkcombo_popup_show_callback(GtkCombo *WXUNUSED(gtk_combo), wxComboBox *combo)
 109 {
 110     // store the combobox selection value before the popup is shown
 111     g_SelectionBeforePopup = combo->GetCurrentSelection();
 112 }
 113 }
 114
 115 //-----------------------------------------------------------------------------
 116 // "select-child" - click/cursor get select-child, changed, select-child
 117 //-----------------------------------------------------------------------------
 118
 119 extern "C" {
 120 static void
 121 gtkcombo_combo_select_child_callback( GtkList *WXUNUSED(list), GtkWidget *WXUNUSED(widget), wxComboBox *combo )
 122 {
 123     if (g_isIdle) wxapp_install_idle_handler();
 124
 125     if (!combo->m_hasVMT) return;
 126
 127     if (g_blockEventsOnDrag) return;
 128
 129     int curSelection = combo->GetCurrentSelection();
 130
 131     if (combo->m_prevSelection == curSelection) return;
 132
 133     GtkWidget *list = GTK_COMBO(combo->m_widget)->list;
 134     gtk_list_unselect_item( GTK_LIST(list), combo->m_prevSelection );
 135
 136     combo->m_prevSelection = curSelection;
 137
 138     // Quickly set the value of the combo box
 139     // as GTK+ does that only AFTER the event
 140     // is sent.
 141     g_signal_handlers_disconnect_by_func (GTK_COMBO (combo->GetHandle())->entry,
 142                                           (gpointer) gtkcombo_text_changed_callback,
 143                                           combo);
 144     combo->SetValue( combo->GetStringSelection() );
 145     g_signal_connect_after (GTK_COMBO (combo->GetHandle())->entry, "changed",
 146                             G_CALLBACK (gtkcombo_text_changed_callback), combo);
 147
 148     // throw a SELECTED event only if the combobox popup is hidden (wxID_NONE)
 149     // because when combobox popup is shown, gtkcombo_combo_select_child_callback is
 150     // called each times the mouse is over an item with a pressed button so a lot
 151     // of SELECTED event could be generated if the user keep the mouse button down
 152     // and select other items ...
 153     if (g_SelectionBeforePopup == wxID_NONE)
 154     {
 155         wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
 156         event.SetInt( curSelection );
 157         event.SetString( combo->GetStringSelection() );
 158         event.SetEventObject( combo );
 159         combo->GetEventHandler()->ProcessEvent( event );
 160
 161         // for consistency with the other ports, don't generate text update
 162         // events while the user is browsing the combobox neither
 163         wxCommandEvent event2( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
 164         event2.SetString( combo->GetValue() );
 165         event2.SetEventObject( combo );
 166         combo->GetEventHandler()->ProcessEvent( event2 );
 167     }
 168 }
 169 }
 170
 171 #ifdef __WXGTK24__
 172 extern "C" {
 173 static void
 174 gtkcombobox_text_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
 175 {
 176     if (g_isIdle) wxapp_install_idle_handler();
 177
 178     if (!combo->m_hasVMT) return;
 179
 180     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
 181     event.SetString( combo->GetValue() );
 182     event.SetEventObject( combo );
 183     combo->GetEventHandler()->ProcessEvent( event );
 184 }
 185 }
 186
 187 extern "C" {
 188 static void
 189 gtkcombobox_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
 190 {
 191     if (g_isIdle) wxapp_install_idle_handler();
 192
 193     if (!combo->m_hasVMT) return;
 194
 195     wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
 196     event.SetInt( combo->GetSelection() );
 197     event.SetString( combo->GetStringSelection() );
 198     event.SetEventObject( combo );
 199     combo->GetEventHandler()->ProcessEvent( event );
 200 }
 201 }
 202 #endif
 203
 204 //-----------------------------------------------------------------------------
 205 // wxComboBox
 206 //-----------------------------------------------------------------------------
 207
 208 IMPLEMENT_DYNAMIC_CLASS(wxComboBox,wxControl)
 209
 210 BEGIN_EVENT_TABLE(wxComboBox, wxControl)
 211     EVT_SIZE(wxComboBox::OnSize)
 212     EVT_CHAR(wxComboBox::OnChar)
 213
 214     EVT_MENU(wxID_CUT, wxComboBox::OnCut)
 215     EVT_MENU(wxID_COPY, wxComboBox::OnCopy)
 216     EVT_MENU(wxID_PASTE, wxComboBox::OnPaste)
 217     EVT_MENU(wxID_UNDO, wxComboBox::OnUndo)
 218     EVT_MENU(wxID_REDO, wxComboBox::OnRedo)
 219     EVT_MENU(wxID_CLEAR, wxComboBox::OnDelete)
 220     EVT_MENU(wxID_SELECTALL, wxComboBox::OnSelectAll)
 221
 222     EVT_UPDATE_UI(wxID_CUT, wxComboBox::OnUpdateCut)
 223     EVT_UPDATE_UI(wxID_COPY, wxComboBox::OnUpdateCopy)
 224     EVT_UPDATE_UI(wxID_PASTE, wxComboBox::OnUpdatePaste)
 225     EVT_UPDATE_UI(wxID_UNDO, wxComboBox::OnUpdateUndo)
 226     EVT_UPDATE_UI(wxID_REDO, wxComboBox::OnUpdateRedo)
 227     EVT_UPDATE_UI(wxID_CLEAR, wxComboBox::OnUpdateDelete)
 228     EVT_UPDATE_UI(wxID_SELECTALL, wxComboBox::OnUpdateSelectAll)
 229 END_EVENT_TABLE()
 230
 231 bool wxComboBox::Create( wxWindow *parent, wxWindowID id,
 232                          const wxString& value,
 233                          const wxPoint& pos, const wxSize& size,
 234                          const wxArrayString& choices,
 235                          long style, const wxValidator& validator,
 236                          const wxString& name )
 237 {
 238     wxCArrayString chs(choices);
 239
 240     return Create( parent, id, value, pos, size, chs.GetCount(),
 241                    chs.GetStrings(), style, validator, name );
 242 }
 243
 244 bool wxComboBox::Create( wxWindow *parent, wxWindowID id, const wxString& value,
 245                          const wxPoint& pos, const wxSize& size,
 246                          int n, const wxString choices[],
 247                          long style, const wxValidator& validator,
 248                          const wxString& name )
 249 {
 250     m_ignoreNextUpdate = false;
 251     m_needParent = true;
 252     m_acceptsFocus = true;
 253     m_prevSelection = 0;
 254
 255     if (!PreCreation( parent, pos, size ) ||
 256         !CreateBase( parent, id, pos, size, style, validator, name ))
 257     {
 258         wxFAIL_MSG( wxT("wxComboBox creation failed") );
 259         return false;
 260     }
 261
 262 #ifdef __WXGTK24__
 263     if (!gtk_check_version(2,4,0))
 264     {
 265         m_widget = gtk_combo_box_entry_new_text();
 266         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 267
 268         gtk_entry_set_editable( GTK_ENTRY( GTK_BIN(m_widget)->child ), TRUE );
 269
 270         for (int i = 0; i < n; i++)
 271         {
 272             gtk_combo_box_append_text( combobox,  wxGTK_CONV( choices[i] ) );
 273
 274             m_clientDataList.Append( (wxObject*)NULL );
 275             m_clientObjectList.Append( (wxObject*)NULL );
 276         }
 277     }
 278     else
 279 #endif
 280     {
 281         m_widget = gtk_combo_new();
 282         GtkCombo* combo = GTK_COMBO(m_widget);
 283
 284         // Disable GTK's broken events ...
 285         g_signal_handler_disconnect (combo->entry, combo->entry_change_id);
 286         // ... and add surrogate handler.
 287         combo->entry_change_id = g_signal_connect (combo->entry, "changed",
 288                                                G_CALLBACK (gtkcombo_dummy_callback),
 289                                                combo);
 290
 291         // make it more useable
 292         gtk_combo_set_use_arrows_always( GTK_COMBO(m_widget), TRUE );
 293
 294         // and case-sensitive
 295         gtk_combo_set_case_sensitive( GTK_COMBO(m_widget), TRUE );
 296
 297         if (style & wxNO_BORDER)
 298             g_object_set (combo->entry, "has-frame", FALSE, NULL );
 299
 300         GtkWidget *list = combo->list;
 301
 302         for (int i = 0; i < n; i++)
 303         {
 304             GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( choices[i] ) );
 305
 306             m_clientDataList.Append( (wxObject*)NULL );
 307             m_clientObjectList.Append( (wxObject*)NULL );
 308
 309             gtk_container_add( GTK_CONTAINER(list), list_item );
 310
 311             gtk_widget_show( list_item );
 312         }
 313     }
 314
 315
 316     m_parent->DoAddChild( this );
 317
 318     GtkEntry *entry = NULL;
 319 #ifdef __WXGTK24__
 320     if (!gtk_check_version(2,4,0))
 321         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 322     else
 323 #endif
 324         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 325
 326     m_focusWidget = GTK_WIDGET( entry );
 327
 328     PostCreation(size);
 329
 330 #ifdef __WXGTK24__
 331     if (!gtk_check_version(2,4,0))
 332         ConnectWidget( m_widget );
 333     else
 334 #endif
 335         ConnectWidget( GTK_COMBO(m_widget)->button );
 336
 337 #ifdef __WXGTK24__
 338     if (!gtk_check_version(2,4,0))
 339     {
 340         gtk_entry_set_text( entry, wxGTK_CONV(value) );
 341
 342         if (style & wxCB_READONLY)
 343             gtk_entry_set_editable( entry, FALSE );
 344
 345         g_signal_connect_after (entry, "changed",
 346                             G_CALLBACK (gtkcombobox_text_changed_callback), this);
 347
 348         g_signal_connect_after (m_widget, "changed",
 349                             G_CALLBACK (gtkcombobox_changed_callback), this);
 350     }
 351     else
 352 #endif
 353     {
 354         GtkCombo *combo = GTK_COMBO(m_widget);
 355         // MSW's combo box shows the value and the selection is -1
 356         gtk_entry_set_text( entry, wxGTK_CONV(value) );
 357         gtk_list_unselect_all( GTK_LIST(combo->list) );
 358
 359         if (style & wxCB_READONLY)
 360             gtk_entry_set_editable( entry, FALSE );
 361
 362         // "show" and "hide" events are generated when user click on the combobox button which popups a list
 363         // this list is the "popwin" gtk widget
 364         g_signal_connect (GTK_COMBO(combo)->popwin, "hide",
 365                       G_CALLBACK (gtkcombo_popup_hide_callback), this);
 366         g_signal_connect (GTK_COMBO(combo)->popwin, "show",
 367                       G_CALLBACK (gtkcombo_popup_show_callback), this);
 368         g_signal_connect_after (combo->list, "select-child",
 369                             G_CALLBACK (gtkcombo_combo_select_child_callback),
 370                             this);
 371         g_signal_connect_after (entry, "changed",
 372                             G_CALLBACK (gtkcombo_text_changed_callback), this);
 373
 374         // This is required for tool bar support
 375         // Doesn't currently work
 376 //        wxSize setsize = GetSize();
 377 //        gtk_widget_set_size_request( m_widget, setsize.x, setsize.y );
 378     }
 379
 380     SetBestSize(size); // need this too because this is a wxControlWithItems
 381
 382
 383     return true;
 384 }
 385
 386 wxComboBox::~wxComboBox()
 387 {
 388     wxList::compatibility_iterator node = m_clientObjectList.GetFirst();
 389     while (node)
 390     {
 391         wxClientData *cd = (wxClientData*)node->GetData();
 392         if (cd) delete cd;
 393         node = node->GetNext();
 394     }
 395     m_clientObjectList.Clear();
 396
 397     m_clientDataList.Clear();
 398 }
 399
 400 void wxComboBox::SetFocus()
 401 {
 402     if ( m_hasFocus )
 403     {
 404         // don't do anything if we already have focus
 405         return;
 406     }
 407
 408     gtk_widget_grab_focus( m_focusWidget );
 409 }
 410
 411 int wxComboBox::DoAppend( const wxString &item )
 412 {
 413     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 414
 415 #ifdef __WXGTK24__
 416     if (!gtk_check_version(2,4,0))
 417     {
 418         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 419         gtk_combo_box_append_text( combobox,  wxGTK_CONV( item ) );
 420     }
 421     else
 422 #endif
 423     {
 424         DisableEvents();
 425
 426         GtkWidget *list = GTK_COMBO(m_widget)->list;
 427         GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
 428
 429         gtk_container_add( GTK_CONTAINER(list), list_item );
 430
 431         if (GTK_WIDGET_REALIZED(m_widget))
 432         {
 433             gtk_widget_realize( list_item );
 434             gtk_widget_realize( GTK_BIN(list_item)->child );
 435         }
 436
 437         // Apply current widget style to the new list_item
 438         GtkRcStyle *style = CreateWidgetStyle();
 439         if (style)
 440         {
 441             gtk_widget_modify_style( GTK_WIDGET( list_item ), style );
 442             GtkBin *bin = GTK_BIN( list_item );
 443             GtkWidget *label = GTK_WIDGET( bin->child );
 444             gtk_widget_modify_style( label, style );
 445             gtk_rc_style_unref( style );
 446         }
 447
 448         gtk_widget_show( list_item );
 449
 450         EnableEvents();
 451     }
 452
 453     const unsigned int count = GetCount();
 454
 455     if ( m_clientDataList.GetCount() < count )
 456         m_clientDataList.Append( (wxObject*) NULL );
 457     if ( m_clientObjectList.GetCount() < count )
 458         m_clientObjectList.Append( (wxObject*) NULL );
 459
 460     InvalidateBestSize();
 461
 462     return count - 1;
 463 }
 464
 465 int wxComboBox::DoInsert(const wxString &item, unsigned int pos)
 466 {
 467     wxCHECK_MSG( !(GetWindowStyle() & wxCB_SORT), -1,
 468                     wxT("can't insert into sorted list"));
 469
 470     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 471     wxCHECK_MSG( IsValidInsert(pos), -1, wxT("invalid index") );
 472
 473     unsigned int count = GetCount();
 474
 475     if (pos == count)
 476         return Append(item);
 477
 478 #ifdef __WXGTK24__
 479     if (!gtk_check_version(2,4,0))
 480     {
 481         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 482         gtk_combo_box_insert_text( combobox, pos, wxGTK_CONV( item ) );
 483     }
 484     else
 485 #endif
 486     {
 487         DisableEvents();
 488
 489         GtkWidget *list = GTK_COMBO(m_widget)->list;
 490         GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
 491
 492         GList *gitem_list = g_list_alloc ();
 493         gitem_list->data = list_item;
 494         gtk_list_insert_items( GTK_LIST (list), gitem_list, pos );
 495
 496         if (GTK_WIDGET_REALIZED(m_widget))
 497         {
 498             gtk_widget_realize( list_item );
 499             gtk_widget_realize( GTK_BIN(list_item)->child );
 500
 501             ApplyWidgetStyle();
 502         }
 503
 504         gtk_widget_show( list_item );
 505
 506         EnableEvents();
 507     }
 508
 509     count = GetCount();
 510
 511     if ( m_clientDataList.GetCount() < count )
 512         m_clientDataList.Insert( pos, (wxObject*) NULL );
 513     if ( m_clientObjectList.GetCount() < count )
 514         m_clientObjectList.Insert( pos, (wxObject*) NULL );
 515
 516     InvalidateBestSize();
 517
 518     return pos;
 519 }
 520
 521 void wxComboBox::DoSetItemClientData(unsigned int n, void* clientData)
 522 {
 523     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 524
 525     wxList::compatibility_iterator node = m_clientDataList.Item( n );
 526     if (!node) return;
 527
 528     node->SetData( (wxObject*) clientData );
 529 }
 530
 531 void* wxComboBox::DoGetItemClientData(unsigned int n) const
 532 {
 533     wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid combobox") );
 534
 535     wxList::compatibility_iterator node = m_clientDataList.Item( n );
 536
 537     return node ? node->GetData() : NULL;
 538 }
 539
 540 void wxComboBox::DoSetItemClientObject(unsigned int n, wxClientData* clientData)
 541 {
 542     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 543
 544     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 545     if (!node) return;
 546
 547     // wxItemContainer already deletes data for us
 548
 549     node->SetData( (wxObject*) clientData );
 550 }
 551
 552 wxClientData* wxComboBox::DoGetItemClientObject(unsigned int n) const
 553 {
 554     wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, wxT("invalid combobox") );
 555
 556     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 557
 558     return node ? (wxClientData*) node->GetData() : NULL;
 559 }
 560
 561 void wxComboBox::Clear()
 562 {
 563     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 564
 565     DisableEvents();
 566
 567 #ifdef __WXGTK24__
 568     if (!gtk_check_version(2,4,0))
 569     {
 570         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 571         const unsigned int count = GetCount();
 572         for (unsigned int i = 0; i < count; i++)
 573             gtk_combo_box_remove_text( combobox, 0 );
 574     }
 575     else // GTK+ < 2.4.0
 576 #endif // __WXGTK24__
 577     {
 578         GtkWidget *list = GTK_COMBO(m_widget)->list;
 579         gtk_list_clear_items( GTK_LIST(list), 0, GetCount() );
 580     }
 581
 582     wxList::compatibility_iterator node = m_clientObjectList.GetFirst();
 583     while (node)
 584     {
 585         wxClientData *cd = (wxClientData*)node->GetData();
 586         delete cd;
 587         node = node->GetNext();
 588     }
 589     m_clientObjectList.Clear();
 590
 591     m_clientDataList.Clear();
 592
 593     EnableEvents();
 594
 595     InvalidateBestSize();
 596 }
 597
 598 void wxComboBox::Delete(unsigned int n)
 599 {
 600     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 601
 602 #ifdef __WXGTK24__
 603     if (!gtk_check_version(2,4,0))
 604     {
 605         wxCHECK_RET( IsValid(n), wxT("invalid index") );
 606
 607         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 608         gtk_combo_box_remove_text( combobox, n );
 609     }
 610     else
 611 #endif
 612     {
 613         GtkList *listbox = GTK_LIST( GTK_COMBO(m_widget)->list );
 614
 615         GList *child = g_list_nth( listbox->children, n );
 616
 617         if (!child)
 618         {
 619             wxFAIL_MSG(wxT("wrong index"));
 620             return;
 621         }
 622
 623         DisableEvents();
 624
 625         GList *list = g_list_append( (GList*) NULL, child->data );
 626         gtk_list_remove_items( listbox, list );
 627         g_list_free( list );
 628
 629         EnableEvents();
 630     }
 631
 632     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 633     if (node)
 634     {
 635         wxClientData *cd = (wxClientData*)node->GetData();
 636         if (cd) delete cd;
 637         m_clientObjectList.Erase( node );
 638     }
 639
 640     node = m_clientDataList.Item( n );
 641     if (node)
 642         m_clientDataList.Erase( node );
 643
 644     InvalidateBestSize();
 645 }
 646
 647 void wxComboBox::SetString(unsigned int n, const wxString &text)
 648 {
 649     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 650
 651 #ifdef __WXGTK24__
 652     if (!gtk_check_version(2,4,0))
 653     {
 654         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 655         wxCHECK_RET( IsValid(n), wxT("invalid index") );
 656
 657         GtkTreeModel *model = gtk_combo_box_get_model( combobox );
 658         GtkTreeIter iter;
 659         if (gtk_tree_model_iter_nth_child (model, &iter, NULL, n))
 660         {
 661             GValue value = { 0, };
 662             g_value_init( &value, G_TYPE_STRING );
 663             g_value_set_string( &value, wxGTK_CONV( text ) );
 664             gtk_list_store_set_value( GTK_LIST_STORE(model), &iter, 0, &value );
 665             g_value_unset( &value );
 666         }
 667     }
 668     else
 669 #endif
 670     {
 671         GtkWidget *list = GTK_COMBO(m_widget)->list;
 672
 673         GList *child = g_list_nth( GTK_LIST(list)->children, n );
 674         if (child)
 675         {
 676             GtkBin *bin = GTK_BIN( child->data );
 677             GtkLabel *label = GTK_LABEL( bin->child );
 678             gtk_label_set_text(label, wxGTK_CONV(text));
 679         }
 680         else
 681         {
 682             wxFAIL_MSG( wxT("wxComboBox: wrong index") );
 683         }
 684     }
 685
 686     InvalidateBestSize();
 687 }
 688
 689 int wxComboBox::FindString( const wxString &item, bool bCase ) const
 690 {
 691     wxCHECK_MSG( m_widget != NULL, wxNOT_FOUND, wxT("invalid combobox") );
 692
 693 #ifdef __WXGTK24__
 694     if (!gtk_check_version(2,4,0))
 695     {
 696         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 697         GtkTreeModel* model = gtk_combo_box_get_model( combobox );
 698         GtkTreeIter iter;
 699         gtk_tree_model_get_iter_first( model, &iter );
 700         if (!gtk_list_store_iter_is_valid(GTK_LIST_STORE(model), &iter ))
 701             return -1;
 702         int count = 0;
 703         do
 704         {
 705             GValue value = { 0, };
 706             gtk_tree_model_get_value( model, &iter, 0, &value );
 707             wxString str = wxGTK_CONV_BACK( g_value_get_string( &value ) );
 708             g_value_unset( &value );
 709
 710             if (item.IsSameAs( str, bCase ) )
 711                 return count;
 712
 713             count++;
 714
 715         } while (gtk_tree_model_iter_next( model, &iter ));
 716     }
 717     else
 718 #endif
 719     {
 720         GtkWidget *list = GTK_COMBO(m_widget)->list;
 721
 722         GList *child = GTK_LIST(list)->children;
 723         int count = 0;
 724         while (child)
 725         {
 726             GtkBin *bin = GTK_BIN( child->data );
 727             GtkLabel *label = GTK_LABEL( bin->child );
 728             wxString str( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 729
 730             if (item.IsSameAs( str , bCase ) )
 731                 return count;
 732
 733             count++;
 734             child = child->next;
 735         }
 736     }
 737
 738     return wxNOT_FOUND;
 739 }
 740
 741 int wxComboBox::GetSelection() const
 742 {
 743 #ifdef __WXGTK24__
 744     if (!gtk_check_version(2,4,0))
 745     {
 746         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 747         return gtk_combo_box_get_active( combobox );
 748     }
 749     else
 750 #endif
 751         // if the popup is currently opened, use the selection as it had been
 752         // before it dropped down
 753         return g_SelectionBeforePopup == wxID_NONE ? GetCurrentSelection()
 754                                                : g_SelectionBeforePopup;
 755 }
 756
 757 int wxComboBox::GetCurrentSelection() const
 758 {
 759     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 760
 761 #ifdef __WXGTK24__
 762     if (!gtk_check_version(2,4,0))
 763     {
 764         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 765         return gtk_combo_box_get_active( combobox );
 766     }
 767     else
 768 #endif
 769     {
 770         GtkWidget *list = GTK_COMBO(m_widget)->list;
 771
 772         GList *selection = GTK_LIST(list)->selection;
 773         if (selection)
 774         {
 775             GList *child = GTK_LIST(list)->children;
 776             int count = 0;
 777             while (child)
 778             {
 779                 if (child->data == selection->data) return count;
 780                 count++;
 781                 child = child->next;
 782             }
 783         }
 784     }
 785
 786     return -1;
 787 }
 788
 789 wxString wxComboBox::GetString(unsigned int n) const
 790 {
 791     wxCHECK_MSG( m_widget != NULL, wxEmptyString, wxT("invalid combobox") );
 792
 793     wxString str;
 794
 795 #ifdef __WXGTK24__
 796     if (!gtk_check_version(2,4,0))
 797     {
 798         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 799         GtkTreeModel *model = gtk_combo_box_get_model( combobox );
 800         GtkTreeIter iter;
 801         if (gtk_tree_model_iter_nth_child (model, &iter, NULL, n))
 802         {
 803             GValue value = { 0, };
 804             gtk_tree_model_get_value( model, &iter, 0, &value );
 805             wxString tmp = wxGTK_CONV_BACK( g_value_get_string( &value ) );
 806             g_value_unset( &value );
 807             return tmp;
 808         }
 809     }
 810     else
 811 #endif
 812     {
 813         GtkWidget *list = GTK_COMBO(m_widget)->list;
 814
 815         GList *child = g_list_nth( GTK_LIST(list)->children, n );
 816         if (child)
 817         {
 818             GtkBin *bin = GTK_BIN( child->data );
 819             GtkLabel *label = GTK_LABEL( bin->child );
 820             str = wxGTK_CONV_BACK( gtk_label_get_text(label) );
 821         }
 822         else
 823         {
 824             wxFAIL_MSG( wxT("wxComboBox: wrong index") );
 825         }
 826     }
 827
 828     return str;
 829 }
 830
 831 wxString wxComboBox::GetStringSelection() const
 832 {
 833     wxCHECK_MSG( m_widget != NULL, wxEmptyString, wxT("invalid combobox") );
 834
 835 #ifdef __WXGTK24__
 836     if (!gtk_check_version(2,4,0))
 837     {
 838         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 839         int sel = gtk_combo_box_get_active( combobox );
 840         if (sel == -1)
 841             return wxEmptyString;
 842         return GetString(sel);
 843     }
 844     else
 845 #endif
 846     {
 847         GtkWidget *list = GTK_COMBO(m_widget)->list;
 848
 849         GList *selection = GTK_LIST(list)->selection;
 850         if (selection)
 851         {
 852             GtkBin *bin = GTK_BIN( selection->data );
 853             GtkLabel *label = GTK_LABEL( bin->child );
 854             wxString tmp( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 855             return tmp;
 856         }
 857
 858         wxFAIL_MSG( wxT("wxComboBox: no selection") );
 859     }
 860
 861     return wxEmptyString;
 862 }
 863
 864 unsigned int wxComboBox::GetCount() const
 865 {
 866     wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid combobox") );
 867
 868 #ifdef __WXGTK24__
 869     if (!gtk_check_version(2,4,0))
 870     {
 871         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 872         GtkTreeModel* model = gtk_combo_box_get_model( combobox );
 873         GtkTreeIter iter;
 874         gtk_tree_model_get_iter_first( model, &iter );
 875         if (!gtk_list_store_iter_is_valid(GTK_LIST_STORE(model), &iter ))
 876             return 0;
 877         unsigned int ret = 1;
 878         while (gtk_tree_model_iter_next( model, &iter ))
 879             ret++;
 880         return ret;
 881     }
 882     else
 883 #endif
 884     {
 885         GtkWidget *list = GTK_COMBO(m_widget)->list;
 886
 887         GList *child = GTK_LIST(list)->children;
 888         unsigned int count = 0;
 889         while (child)
 890         {
 891             count++;
 892             child = child->next;
 893         }
 894         return count;
 895     }
 896
 897     return 0;
 898 }
 899
 900 void wxComboBox::SetSelection( int n )
 901 {
 902     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 903
 904     DisableEvents();
 905
 906 #ifdef __WXGTK24__
 907     if (!gtk_check_version(2,4,0))
 908     {
 909         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 910         gtk_combo_box_set_active( combobox, n );
 911     }
 912     else
 913 #endif
 914     {
 915         GtkWidget *list = GTK_COMBO(m_widget)->list;
 916         gtk_list_unselect_item( GTK_LIST(list), m_prevSelection );
 917         gtk_list_select_item( GTK_LIST(list), n );
 918         m_prevSelection = n;
 919     }
 920
 921     EnableEvents();
 922 }
 923
 924 wxString wxComboBox::GetValue() const
 925 {
 926     GtkEntry *entry = NULL;
 927 #ifdef __WXGTK24__
 928     if (!gtk_check_version(2,4,0))
 929         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 930     else
 931 #endif
 932         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 933
 934     wxString tmp( wxGTK_CONV_BACK( gtk_entry_get_text( entry ) ) );
 935
 936 #if 0
 937     for (int i = 0; i < wxStrlen(tmp.c_str()) +1; i++)
 938     {
 939         wxChar c = tmp[i];
 940         printf( "%d ", (int) (c) );
 941     }
 942     printf( "\n" );
 943 #endif
 944
 945     return tmp;
 946 }
 947
 948 void wxComboBox::SetValue( const wxString& value )
 949 {
 950     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 951
 952     GtkEntry *entry = NULL;
 953 #ifdef __WXGTK24__
 954     if (!gtk_check_version(2,4,0))
 955         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 956     else
 957 #endif
 958         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 959
 960     wxString tmp;
 961     if (!value.IsNull()) tmp = value;
 962     gtk_entry_set_text( entry, wxGTK_CONV( tmp ) );
 963
 964     InvalidateBestSize();
 965 }
 966
 967 void wxComboBox::Copy()
 968 {
 969     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 970
 971     GtkEntry *entry = NULL;
 972 #ifdef __WXGTK24__
 973     if (!gtk_check_version(2,4,0))
 974         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 975     else
 976 #endif
 977         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 978
 979     gtk_editable_copy_clipboard(GTK_EDITABLE(entry));
 980 }
 981
 982 void wxComboBox::Cut()
 983 {
 984     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 985
 986     GtkEntry *entry = NULL;
 987 #ifdef __WXGTK24__
 988     if (!gtk_check_version(2,4,0))
 989         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 990     else
 991 #endif
 992         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 993
 994     gtk_editable_cut_clipboard(GTK_EDITABLE(entry));
 995 }
 996
 997 void wxComboBox::Paste()
 998 {
 999     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
1000
1001     GtkEntry *entry = NULL;
1002 #ifdef __WXGTK24__
1003     if (!gtk_check_version(2,4,0))
1004         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1005     else
1006 #endif
1007         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1008
1009     gtk_editable_paste_clipboard(GTK_EDITABLE(entry));
1010 }
1011
1012 void wxComboBox::Undo()
1013 {
1014     // TODO
1015 }
1016
1017 void wxComboBox::Redo()
1018 {
1019     // TODO
1020 }
1021
1022 void wxComboBox::SelectAll()
1023 {
1024     SetSelection(0, GetLastPosition());
1025 }
1026
1027 bool wxComboBox::CanUndo() const
1028 {
1029     // TODO
1030     return false;
1031 }
1032
1033 bool wxComboBox::CanRedo() const
1034 {
1035     // TODO
1036     return false;
1037 }
1038
1039 bool wxComboBox::HasSelection() const
1040 {
1041     long from, to;
1042     GetSelection(&from, &to);
1043     return from != to;
1044 }
1045
1046 bool wxComboBox::CanCopy() const
1047 {
1048     // Can copy if there's a selection
1049     return HasSelection();
1050 }
1051
1052 bool wxComboBox::CanCut() const
1053 {
1054     return CanCopy() && IsEditable();
1055 }
1056
1057 bool wxComboBox::CanPaste() const
1058 {
1059     // TODO: check for text on the clipboard
1060     return IsEditable() ;
1061 }
1062
1063 bool wxComboBox::IsEditable() const
1064 {
1065     return !HasFlag(wxCB_READONLY);
1066 }
1067
1068
1069 void wxComboBox::SetInsertionPoint( long pos )
1070 {
1071     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
1072
1073     if ( pos == GetLastPosition() )
1074         pos = -1;
1075
1076     GtkEntry *entry = NULL;
1077 #ifdef __WXGTK24__
1078     if (!gtk_check_version(2,4,0))
1079         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1080     else
1081 #endif
1082         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1083
1084     gtk_entry_set_position( entry, (int)pos );
1085 }
1086
1087 long wxComboBox::GetInsertionPoint() const
1088 {
1089     GtkEntry *entry = NULL;
1090 #ifdef __WXGTK24__
1091     if (!gtk_check_version(2,4,0))
1092         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1093     else
1094 #endif
1095         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1096
1097     return (long) gtk_editable_get_position(GTK_EDITABLE(entry));
1098 }
1099
1100 wxTextPos wxComboBox::GetLastPosition() const
1101 {
1102     GtkEntry *entry = NULL;
1103 #ifdef __WXGTK24__
1104     if (!gtk_check_version(2,4,0))
1105         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1106     else
1107 #endif
1108         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1109
1110     int pos = entry->text_length;
1111     return (long) pos-1;
1112 }
1113
1114 void wxComboBox::Replace( long from, long to, const wxString& value )
1115 {
1116     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
1117
1118     GtkEntry *entry = NULL;
1119 #ifdef __WXGTK24__
1120     if (!gtk_check_version(2,4,0))
1121         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1122     else
1123 #endif
1124         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1125
1126     gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
1127     if (value.IsNull()) return;
1128     gint pos = (gint)to;
1129
1130 #if wxUSE_UNICODE
1131     wxCharBuffer buffer = wxConvUTF8.cWX2MB( value );
1132     gtk_editable_insert_text( GTK_EDITABLE(entry), (const char*) buffer, strlen( (const char*) buffer ), &pos );
1133 #else
1134     gtk_editable_insert_text( GTK_EDITABLE(entry), value.c_str(), value.length(), &pos );
1135 #endif
1136 }
1137
1138 void wxComboBox::SetSelection( long from, long to )
1139 {
1140     GtkEntry *entry = NULL;
1141 #ifdef __WXGTK24__
1142     if (!gtk_check_version(2,4,0))
1143         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1144     else
1145 #endif
1146         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1147
1148     gtk_editable_select_region( GTK_EDITABLE(entry), (gint)from, (gint)to );
1149 }
1150
1151 void wxComboBox::GetSelection( long* from, long* to ) const
1152 {
1153     GtkEntry *entry = NULL;
1154 #ifdef __WXGTK24__
1155     if (!gtk_check_version(2,4,0))
1156         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1157     else
1158 #endif
1159         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1160
1161     if (IsEditable())
1162     {
1163         GtkEditable *editable = GTK_EDITABLE(entry);
1164         gint start, end;
1165         gtk_editable_get_selection_bounds(editable, & start, & end);
1166         *from = start;
1167         *to = end;
1168     }
1169 }
1170
1171 void wxComboBox::SetEditable( bool editable )
1172 {
1173     GtkEntry *entry = NULL;
1174 #ifdef __WXGTK24__
1175     if (!gtk_check_version(2,4,0))
1176         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1177     else
1178 #endif
1179         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1180
1181     gtk_entry_set_editable( GTK_ENTRY(entry), editable );
1182 }
1183
1184 void wxComboBox::OnChar( wxKeyEvent &event )
1185 {
1186     if ( event.GetKeyCode() == WXK_RETURN )
1187     {
1188         // GTK automatically selects an item if its in the list
1189         wxCommandEvent eventEnter(wxEVT_COMMAND_TEXT_ENTER, GetId());
1190         eventEnter.SetString( GetValue() );
1191         eventEnter.SetInt( GetSelection() );
1192         eventEnter.SetEventObject( this );
1193
1194         if (!GetEventHandler()->ProcessEvent( eventEnter ))
1195         {
1196             // This will invoke the dialog default action, such
1197             // as the clicking the default button.
1198
1199             wxWindow *top_frame = m_parent;
1200             while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1201                 top_frame = top_frame->GetParent();
1202
1203             if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1204             {
1205                 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1206
1207                 if (window->default_widget)
1208                         gtk_widget_activate (window->default_widget);
1209             }
1210         }
1211
1212         // Catch GTK event so that GTK doesn't open the drop
1213         // down list upon RETURN.
1214         return;
1215     }
1216
1217     event.Skip();
1218 }
1219
1220 void wxComboBox::DisableEvents()
1221 {
1222 #ifdef __WXGTK24__
1223     if (!gtk_check_version(2,4,0))
1224     {
1225         g_signal_handlers_disconnect_by_func (GTK_BIN(m_widget)->child,
1226                 (gpointer)gtkcombobox_text_changed_callback, this);
1227
1228         g_signal_handlers_disconnect_by_func (m_widget,
1229                 (gpointer)gtkcombobox_changed_callback, this);
1230     }
1231     else
1232 #endif
1233     {
1234         g_signal_handlers_disconnect_by_func (GTK_COMBO(m_widget)->list,
1235                 (gpointer) gtkcombo_combo_select_child_callback, this);
1236
1237         g_signal_handlers_disconnect_by_func (GTK_COMBO(m_widget)->entry,
1238                 (gpointer) gtkcombo_text_changed_callback, this);
1239     }
1240 }
1241
1242 void wxComboBox::EnableEvents()
1243 {
1244 #ifdef __WXGTK24__
1245     if (!gtk_check_version(2,4,0))
1246     {
1247         g_signal_connect_after (GTK_BIN(m_widget)->child, "changed",
1248                             G_CALLBACK (gtkcombobox_text_changed_callback), this);
1249
1250         g_signal_connect_after (m_widget, "changed",
1251                             G_CALLBACK (gtkcombobox_changed_callback), this);
1252     }
1253     else
1254 #endif
1255     {
1256         g_signal_connect_after (GTK_COMBO(m_widget)->list, "select-child",
1257                             G_CALLBACK (gtkcombo_combo_select_child_callback),
1258                             this);
1259         g_signal_connect_after (GTK_COMBO(m_widget)->entry, "changed",
1260                             G_CALLBACK (gtkcombo_text_changed_callback),
1261                             this );
1262     }
1263 }
1264
1265 void wxComboBox::OnSize( wxSizeEvent &event )
1266 {
1267 #ifdef __WXGTK24__
1268     if (!gtk_check_version(2,4,0))
1269     {
1270         // Do nothing
1271     }
1272     else
1273 #endif
1274     {
1275         // NB: In some situations (e.g. on non-first page of a wizard, if the
1276         //     size used is default size), GtkCombo widget is resized correctly,
1277         //     but it's look is not updated, it's rendered as if it was much wider.
1278         //     No other widgets are affected, so it looks like a bug in GTK+.
1279         //     Manually requesting resize calculation (as gtk_pizza_set_size does)
1280         //     fixes it.
1281         if (GTK_WIDGET_VISIBLE(m_widget))
1282             gtk_widget_queue_resize(m_widget);
1283     }
1284
1285     event.Skip();
1286 }
1287
1288 void wxComboBox::DoApplyWidgetStyle(GtkRcStyle *style)
1289 {
1290 #ifdef __WXGTK24__
1291     if (!gtk_check_version(2,4,0))
1292     {
1293         // Do nothing
1294     }
1295     else
1296 #endif
1297     {
1298 //    gtk_widget_modify_style( GTK_COMBO(m_widget)->button, syle );
1299
1300         gtk_widget_modify_style( GTK_COMBO(m_widget)->entry, style );
1301         gtk_widget_modify_style( GTK_COMBO(m_widget)->list, style );
1302
1303         GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
1304         GList *child = list->children;
1305         while (child)
1306         {
1307             gtk_widget_modify_style( GTK_WIDGET(child->data), style );
1308
1309             GtkBin *bin = GTK_BIN(child->data);
1310             gtk_widget_modify_style( bin->child, style );
1311
1312             child = child->next;
1313         }
1314     }
1315 }
1316
1317 GtkWidget* wxComboBox::GetConnectWidget()
1318 {
1319     GtkEntry *entry = NULL;
1320 #ifdef __WXGTK24__
1321     if (!gtk_check_version(2,4,0))
1322         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1323     else
1324 #endif
1325         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1326
1327     return GTK_WIDGET( entry );
1328 }
1329
1330 bool wxComboBox::IsOwnGtkWindow( GdkWindow *window )
1331 {
1332     GtkEntry *entry = NULL;
1333 #ifdef __WXGTK24__
1334     if (!gtk_check_version(2,4,0))
1335     {
1336         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1337         return (window == entry->text_area);
1338     }
1339     else
1340 #endif
1341     {
1342         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1343         return ( (window == entry->text_area) ||
1344                  (window == GTK_COMBO(m_widget)->button->window ) );
1345     }
1346 }
1347
1348 wxSize wxComboBox::DoGetBestSize() const
1349 {
1350     wxSize ret( wxControl::DoGetBestSize() );
1351
1352     // we know better our horizontal extent: it depends on the longest string
1353     // in the combobox
1354     if ( m_widget )
1355     {
1356         int width;
1357         unsigned int count = GetCount();
1358         for ( unsigned int n = 0; n < count; n++ )
1359         {
1360             GetTextExtent(GetString(n), &width, NULL, NULL, NULL );
1361             if ( width > ret.x )
1362                 ret.x = width;
1363         }
1364     }
1365
1366     // empty combobox should have some reasonable default size too
1367     if ( ret.x < 100 )
1368         ret.x = 100;
1369
1370     CacheBestSize(ret);
1371     return ret;
1372 }
1373
1374 // static
1375 wxVisualAttributes
1376 wxComboBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1377 {
1378 #ifdef __WXGTK24__
1379     if (!gtk_check_version(2,4,0))
1380         return GetDefaultAttributesFromGTKWidget(gtk_combo_box_entry_new, true);
1381     else
1382 #endif
1383         return GetDefaultAttributesFromGTKWidget(gtk_combo_new, true);
1384 }
1385
1386 // ----------------------------------------------------------------------------
1387 // standard event handling
1388 // ----------------------------------------------------------------------------
1389
1390 void wxComboBox::OnCut(wxCommandEvent& WXUNUSED(event))
1391 {
1392     Cut();
1393 }
1394
1395 void wxComboBox::OnCopy(wxCommandEvent& WXUNUSED(event))
1396 {
1397     Copy();
1398 }
1399
1400 void wxComboBox::OnPaste(wxCommandEvent& WXUNUSED(event))
1401 {
1402     Paste();
1403 }
1404
1405 void wxComboBox::OnUndo(wxCommandEvent& WXUNUSED(event))
1406 {
1407     Undo();
1408 }
1409
1410 void wxComboBox::OnRedo(wxCommandEvent& WXUNUSED(event))
1411 {
1412     Redo();
1413 }
1414
1415 void wxComboBox::OnDelete(wxCommandEvent& WXUNUSED(event))
1416 {
1417     long from, to;
1418     GetSelection(& from, & to);
1419     if (from != -1 && to != -1)
1420         Remove(from, to);
1421 }
1422
1423 void wxComboBox::OnSelectAll(wxCommandEvent& WXUNUSED(event))
1424 {
1425     SetSelection(-1, -1);
1426 }
1427
1428 void wxComboBox::OnUpdateCut(wxUpdateUIEvent& event)
1429 {
1430     event.Enable( CanCut() );
1431 }
1432
1433 void wxComboBox::OnUpdateCopy(wxUpdateUIEvent& event)
1434 {
1435     event.Enable( CanCopy() );
1436 }
1437
1438 void wxComboBox::OnUpdatePaste(wxUpdateUIEvent& event)
1439 {
1440     event.Enable( CanPaste() );
1441 }
1442
1443 void wxComboBox::OnUpdateUndo(wxUpdateUIEvent& event)
1444 {
1445     event.Enable( CanUndo() );
1446 }
1447
1448 void wxComboBox::OnUpdateRedo(wxUpdateUIEvent& event)
1449 {
1450     event.Enable( CanRedo() );
1451 }
1452
1453 void wxComboBox::OnUpdateDelete(wxUpdateUIEvent& event)
1454 {
1455     event.Enable(HasSelection() && IsEditable()) ;
1456 }
1457
1458 void wxComboBox::OnUpdateSelectAll(wxUpdateUIEvent& event)
1459 {
1460     event.Enable(GetLastPosition() > 0);
1461 }
1462
1463 #endif