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     #include "wx/settings.h"
  20     #include "wx/textctrl.h"    // for wxEVT_COMMAND_TEXT_UPDATED
  21     #include "wx/arrstr.h"
  22 #endif
  23
  24 // We use GtkCombo which has been deprecated since GTK+ 2.3.0
  25 // in favour of GtkComboBox for <GTK2.4 runtime
  26 // We also use GtkList
  27 #ifdef GTK_DISABLE_DEPRECATED
  28 #undef GTK_DISABLE_DEPRECATED
  29 #endif
  30 #include "wx/gtk/private.h"
  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 (combo->m_ignoreNextUpdate)
  49     {
  50         combo->m_ignoreNextUpdate = false;
  51         return;
  52     }
  53
  54     if (!combo->m_hasVMT) return;
  55
  56     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
  57     event.SetString( combo->GetValue() );
  58     event.SetEventObject( combo );
  59     combo->GetEventHandler()->ProcessEvent( event );
  60 }
  61 }
  62
  63 extern "C" {
  64 static void
  65 gtkcombo_dummy_callback(GtkEntry *WXUNUSED(entry), GtkCombo *WXUNUSED(combo))
  66 {
  67 }
  68 }
  69
  70 extern "C" {
  71 static void
  72 gtkcombo_popup_hide_callback(GtkCombo *WXUNUSED(gtk_combo), wxComboBox *combo)
  73 {
  74     // when the popup is hidden, throw a SELECTED event only if the combobox
  75     // selection changed.
  76     const int curSelection = combo->GetCurrentSelection();
  77
  78     const bool hasChanged = curSelection != g_SelectionBeforePopup;
  79
  80     // reset the selection flag to value meaning that it is hidden and do it
  81     // now, before generating the events, so that GetSelection() returns the
  82     // new value from the event handler
  83     g_SelectionBeforePopup = wxID_NONE;
  84
  85     if ( hasChanged )
  86     {
  87         wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
  88         event.SetInt( curSelection );
  89         event.SetString( combo->GetStringSelection() );
  90         event.SetEventObject( combo );
  91         combo->GetEventHandler()->ProcessEvent( event );
  92
  93         // for consistency with the other ports, send TEXT event
  94         wxCommandEvent event2( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
  95         event2.SetString( combo->GetStringSelection() );
  96         event2.SetEventObject( combo );
  97         combo->GetEventHandler()->ProcessEvent( event2 );
  98     }
  99 }
 100 }
 101
 102 extern "C" {
 103 static void
 104 gtkcombo_popup_show_callback(GtkCombo *WXUNUSED(gtk_combo), wxComboBox *combo)
 105 {
 106     // store the combobox selection value before the popup is shown
 107     g_SelectionBeforePopup = combo->GetCurrentSelection();
 108 }
 109 }
 110
 111 //-----------------------------------------------------------------------------
 112 // "select-child" - click/cursor get select-child, changed, select-child
 113 //-----------------------------------------------------------------------------
 114
 115 extern "C" {
 116 static void
 117 gtkcombo_combo_select_child_callback( GtkList *WXUNUSED(list), GtkWidget *WXUNUSED(widget), wxComboBox *combo )
 118 {
 119     if (!combo->m_hasVMT) return;
 120
 121     if (g_blockEventsOnDrag) return;
 122
 123     int curSelection = combo->GetCurrentSelection();
 124
 125     if (combo->m_prevSelection == curSelection) return;
 126
 127     GtkWidget *list = GTK_COMBO(combo->m_widget)->list;
 128     gtk_list_unselect_item( GTK_LIST(list), combo->m_prevSelection );
 129
 130     combo->m_prevSelection = curSelection;
 131
 132     // Quickly set the value of the combo box
 133     // as GTK+ does that only AFTER the event
 134     // is sent.
 135     GtkWidget* entry = GTK_COMBO(combo->GetHandle())->entry;
 136     g_signal_handlers_block_by_func(
 137         entry, (gpointer)gtkcombo_text_changed_callback, combo);
 138     combo->SetValue( combo->GetStringSelection() );
 139     g_signal_handlers_unblock_by_func(
 140         entry, (gpointer)gtkcombo_text_changed_callback, combo);
 141
 142     // throw a SELECTED event only if the combobox popup is hidden (wxID_NONE)
 143     // because when combobox popup is shown, gtkcombo_combo_select_child_callback is
 144     // called each times the mouse is over an item with a pressed button so a lot
 145     // of SELECTED event could be generated if the user keep the mouse button down
 146     // and select other items ...
 147     if (g_SelectionBeforePopup == wxID_NONE)
 148     {
 149         wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
 150         event.SetInt( curSelection );
 151         event.SetString( combo->GetStringSelection() );
 152         event.SetEventObject( combo );
 153         combo->GetEventHandler()->ProcessEvent( event );
 154
 155         // for consistency with the other ports, don't generate text update
 156         // events while the user is browsing the combobox neither
 157         wxCommandEvent event2( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
 158         event2.SetString( combo->GetValue() );
 159         event2.SetEventObject( combo );
 160         combo->GetEventHandler()->ProcessEvent( event2 );
 161     }
 162 }
 163 }
 164
 165 #ifdef __WXGTK24__
 166 extern "C" {
 167 static void
 168 gtkcombobox_text_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
 169 {
 170     if (!combo->m_hasVMT) return;
 171
 172     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
 173     event.SetString( combo->GetValue() );
 174     event.SetEventObject( combo );
 175     combo->GetEventHandler()->ProcessEvent( event );
 176 }
 177 }
 178
 179 extern "C" {
 180 static void
 181 gtkcombobox_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
 182 {
 183     if (!combo->m_hasVMT) return;
 184
 185     if (combo->GetSelection() == -1)
 186         return;
 187
 188     wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
 189     event.SetInt( combo->GetSelection() );
 190     event.SetString( combo->GetStringSelection() );
 191     event.SetEventObject( combo );
 192     combo->GetEventHandler()->ProcessEvent( event );
 193 }
 194 }
 195
 196 #endif
 197
 198 //-----------------------------------------------------------------------------
 199 // wxComboBox
 200 //-----------------------------------------------------------------------------
 201
 202 IMPLEMENT_DYNAMIC_CLASS(wxComboBox,wxControl)
 203
 204 BEGIN_EVENT_TABLE(wxComboBox, wxControl)
 205     EVT_SIZE(wxComboBox::OnSize)
 206     EVT_CHAR(wxComboBox::OnChar)
 207
 208     EVT_MENU(wxID_CUT, wxComboBox::OnCut)
 209     EVT_MENU(wxID_COPY, wxComboBox::OnCopy)
 210     EVT_MENU(wxID_PASTE, wxComboBox::OnPaste)
 211     EVT_MENU(wxID_UNDO, wxComboBox::OnUndo)
 212     EVT_MENU(wxID_REDO, wxComboBox::OnRedo)
 213     EVT_MENU(wxID_CLEAR, wxComboBox::OnDelete)
 214     EVT_MENU(wxID_SELECTALL, wxComboBox::OnSelectAll)
 215
 216     EVT_UPDATE_UI(wxID_CUT, wxComboBox::OnUpdateCut)
 217     EVT_UPDATE_UI(wxID_COPY, wxComboBox::OnUpdateCopy)
 218     EVT_UPDATE_UI(wxID_PASTE, wxComboBox::OnUpdatePaste)
 219     EVT_UPDATE_UI(wxID_UNDO, wxComboBox::OnUpdateUndo)
 220     EVT_UPDATE_UI(wxID_REDO, wxComboBox::OnUpdateRedo)
 221     EVT_UPDATE_UI(wxID_CLEAR, wxComboBox::OnUpdateDelete)
 222     EVT_UPDATE_UI(wxID_SELECTALL, wxComboBox::OnUpdateSelectAll)
 223 END_EVENT_TABLE()
 224
 225 bool wxComboBox::Create( wxWindow *parent, wxWindowID id,
 226                          const wxString& value,
 227                          const wxPoint& pos, const wxSize& size,
 228                          const wxArrayString& choices,
 229                          long style, const wxValidator& validator,
 230                          const wxString& name )
 231 {
 232     wxCArrayString chs(choices);
 233
 234     return Create( parent, id, value, pos, size, chs.GetCount(),
 235                    chs.GetStrings(), style, validator, name );
 236 }
 237
 238 bool wxComboBox::Create( wxWindow *parent, wxWindowID id, const wxString& value,
 239                          const wxPoint& pos, const wxSize& size,
 240                          int n, const wxString choices[],
 241                          long style, const wxValidator& validator,
 242                          const wxString& name )
 243 {
 244     m_strings = NULL;
 245     m_ignoreNextUpdate = false;
 246     m_prevSelection = 0;
 247
 248     if (!PreCreation( parent, pos, size ) ||
 249         !CreateBase( parent, id, pos, size, style, validator, name ))
 250     {
 251         wxFAIL_MSG( wxT("wxComboBox creation failed") );
 252         return false;
 253     }
 254
 255     if(HasFlag(wxCB_SORT))
 256         m_strings = new wxSortedArrayString();
 257
 258 #ifdef __WXGTK24__
 259     if (!gtk_check_version(2,4,0))
 260     {
 261         m_widget = gtk_combo_box_entry_new_text();
 262
 263         gtk_entry_set_editable( GTK_ENTRY( GTK_BIN(m_widget)->child ), TRUE );
 264     }
 265     else
 266 #endif
 267     {
 268         m_widget = gtk_combo_new();
 269         GtkCombo* combo = GTK_COMBO(m_widget);
 270
 271         // Disable GTK's broken events ...
 272         g_signal_handler_disconnect (combo->entry, combo->entry_change_id);
 273         // ... and add surrogate handler.
 274         combo->entry_change_id = g_signal_connect (combo->entry, "changed",
 275                                                G_CALLBACK (gtkcombo_dummy_callback),
 276                                                combo);
 277
 278         // make it more useable
 279         gtk_combo_set_use_arrows_always( GTK_COMBO(m_widget), TRUE );
 280
 281         // and case-sensitive
 282         gtk_combo_set_case_sensitive( GTK_COMBO(m_widget), TRUE );
 283
 284         if (style & wxNO_BORDER)
 285             g_object_set (combo->entry, "has-frame", FALSE, NULL );
 286     }
 287
 288     Append(n, choices);
 289
 290     m_parent->DoAddChild( this );
 291
 292     GtkEntry *entry = NULL;
 293 #ifdef __WXGTK24__
 294     if (!gtk_check_version(2,4,0))
 295         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 296     else
 297 #endif
 298         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 299
 300     m_focusWidget = GTK_WIDGET( entry );
 301
 302     PostCreation(size);
 303
 304 #ifdef __WXGTK24__
 305     if (!gtk_check_version(2,4,0))
 306         ConnectWidget( m_widget );
 307     else
 308 #endif
 309         ConnectWidget( GTK_COMBO(m_widget)->button );
 310
 311 #ifdef __WXGTK24__
 312     if (!gtk_check_version(2,4,0))
 313     {
 314         gtk_entry_set_text( entry, wxGTK_CONV(value) );
 315
 316         if (style & wxCB_READONLY)
 317             gtk_entry_set_editable( entry, FALSE );
 318
 319         g_signal_connect_after (entry, "changed",
 320                             G_CALLBACK (gtkcombobox_text_changed_callback), this);
 321
 322         g_signal_connect_after (m_widget, "changed",
 323                             G_CALLBACK (gtkcombobox_changed_callback), this);
 324
 325     }
 326     else
 327 #endif
 328     {
 329         GtkCombo *combo = GTK_COMBO(m_widget);
 330         // MSW's combo box shows the value and the selection is -1
 331         gtk_entry_set_text( entry, wxGTK_CONV(value) );
 332         gtk_list_unselect_all( GTK_LIST(combo->list) );
 333
 334         if (style & wxCB_READONLY)
 335             gtk_entry_set_editable( entry, FALSE );
 336
 337         // "show" and "hide" events are generated when user click on the combobox button which popups a list
 338         // this list is the "popwin" gtk widget
 339         g_signal_connect (GTK_COMBO(combo)->popwin, "hide",
 340                       G_CALLBACK (gtkcombo_popup_hide_callback), this);
 341         g_signal_connect (GTK_COMBO(combo)->popwin, "show",
 342                       G_CALLBACK (gtkcombo_popup_show_callback), this);
 343         g_signal_connect_after (combo->list, "select-child",
 344                             G_CALLBACK (gtkcombo_combo_select_child_callback),
 345                             this);
 346         g_signal_connect_after (entry, "changed",
 347                             G_CALLBACK (gtkcombo_text_changed_callback), this);
 348     }
 349
 350     SetInitialSize(size); // need this too because this is a wxControlWithItems
 351
 352     return true;
 353 }
 354
 355 wxComboBox::~wxComboBox()
 356 {
 357     Clear();
 358
 359     delete m_strings;
 360 }
 361
 362 void wxComboBox::SetFocus()
 363 {
 364     if ( m_hasFocus )
 365     {
 366         // don't do anything if we already have focus
 367         return;
 368     }
 369
 370     gtk_widget_grab_focus( m_focusWidget );
 371 }
 372
 373 int wxComboBox::DoInsertItems(const wxArrayStringsAdapter & items,
 374                               unsigned int pos,
 375                               void **clientData, wxClientDataType type)
 376 {
 377     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 378
 379     wxASSERT_MSG( !IsSorted() || (pos == GetCount()),
 380                  _T("In a sorted combobox data could only be appended"));
 381
 382     const int count = items.GetCount();
 383
 384     int n = wxNOT_FOUND;
 385
 386 #ifdef __WXGTK24__
 387     if (!gtk_check_version(2,4,0))
 388     {
 389         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 390         for( int i = 0; i < count; ++i )
 391         {
 392             n = pos + i;
 393             // If sorted, use this wxSortedArrayStrings to determine
 394             // the right insertion point
 395             if(m_strings)
 396                 n = m_strings->Add(items[i]);
 397
 398             gtk_combo_box_insert_text( combobox, n, wxGTK_CONV( items[i] ) );
 399
 400             m_clientData.Insert( NULL, n );
 401             AssignNewItemClientData(n, clientData, i, type);
 402         }
 403     }
 404     else
 405 #endif
 406     {
 407         DisableEvents();
 408
 409         GtkWidget *list = GTK_COMBO(m_widget)->list;
 410         for( int i = 0; i < count; ++i )
 411         {
 412             n = pos + i;
 413             // If sorted, use this wxSortedArrayStrings to determine
 414             // the right insertion point
 415             if(m_strings)
 416                 n = m_strings->Add(items[i]);
 417
 418             GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( items[i] ) );
 419
 420             // TODO construct a list with all items and call gtk_list_insert_items once?
 421             GList *gitem_list = g_list_alloc ();
 422             gitem_list->data = list_item;
 423             gtk_list_insert_items( GTK_LIST (list), gitem_list, n );
 424
 425             m_clientData.Insert( NULL, n );
 426             AssignNewItemClientData(n, clientData, i, type);
 427
 428             if (GTK_WIDGET_REALIZED(m_widget))
 429             {
 430                 gtk_widget_realize( list_item );
 431                 gtk_widget_realize( GTK_BIN(list_item)->child );
 432
 433                 ApplyWidgetStyle();
 434             }
 435
 436             gtk_widget_show( list_item );
 437         }
 438
 439         EnableEvents();
 440     }
 441
 442     InvalidateBestSize();
 443
 444     return n;
 445 }
 446
 447 void wxComboBox::DoSetItemClientData(unsigned int n, void* clientData)
 448 {
 449     m_clientData[n] = clientData;
 450 }
 451
 452 void* wxComboBox::DoGetItemClientData(unsigned int n) const
 453 {
 454     return m_clientData[n];
 455 }
 456
 457 void wxComboBox::DoClear()
 458 {
 459     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 460
 461     DisableEvents();
 462
 463 #ifdef __WXGTK24__
 464     if (!gtk_check_version(2,4,0))
 465     {
 466         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 467         const unsigned int count = GetCount();
 468         for (unsigned int i = 0; i < count; i++)
 469             gtk_combo_box_remove_text( combobox, 0 );
 470     }
 471     else // GTK+ < 2.4.0
 472 #endif // __WXGTK24__
 473     {
 474         GtkWidget *list = GTK_COMBO(m_widget)->list;
 475         gtk_list_clear_items( GTK_LIST(list), 0, GetCount() );
 476     }
 477
 478     m_clientData.Clear();
 479
 480     if(m_strings)
 481         m_strings->Clear();
 482
 483     EnableEvents();
 484
 485     InvalidateBestSize();
 486 }
 487
 488 void wxComboBox::DoDeleteOneItem(unsigned int n)
 489 {
 490     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 491
 492 #ifdef __WXGTK24__
 493     if (!gtk_check_version(2,4,0))
 494     {
 495         wxCHECK_RET( IsValid(n), wxT("invalid index") );
 496
 497         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 498         gtk_combo_box_remove_text( combobox, n );
 499     }
 500     else
 501 #endif
 502     {
 503         GtkList *listbox = GTK_LIST( GTK_COMBO(m_widget)->list );
 504
 505         GList *child = g_list_nth( listbox->children, n );
 506
 507         if (!child)
 508         {
 509             wxFAIL_MSG(wxT("wrong index"));
 510             return;
 511         }
 512
 513         DisableEvents();
 514
 515         GList *list = g_list_append( (GList*) NULL, child->data );
 516         gtk_list_remove_items( listbox, list );
 517         g_list_free( list );
 518
 519         EnableEvents();
 520     }
 521
 522     m_clientData.RemoveAt( n );
 523     if(m_strings)
 524         m_strings->RemoveAt( n );
 525
 526     InvalidateBestSize();
 527 }
 528
 529 void wxComboBox::SetString(unsigned int n, const wxString &text)
 530 {
 531     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 532
 533 #ifdef __WXGTK24__
 534     if (!gtk_check_version(2,4,0))
 535     {
 536         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 537         wxCHECK_RET( IsValid(n), wxT("invalid index") );
 538
 539         GtkTreeModel *model = gtk_combo_box_get_model( combobox );
 540         GtkTreeIter iter;
 541         if (gtk_tree_model_iter_nth_child (model, &iter, NULL, n))
 542         {
 543             GValue value = { 0, };
 544             g_value_init( &value, G_TYPE_STRING );
 545             g_value_set_string( &value, wxGTK_CONV( text ) );
 546             gtk_list_store_set_value( GTK_LIST_STORE(model), &iter, 0, &value );
 547             g_value_unset( &value );
 548         }
 549     }
 550     else
 551 #endif
 552     {
 553         GtkWidget *list = GTK_COMBO(m_widget)->list;
 554
 555         GList *child = g_list_nth( GTK_LIST(list)->children, n );
 556         if (child)
 557         {
 558             GtkBin *bin = GTK_BIN( child->data );
 559             GtkLabel *label = GTK_LABEL( bin->child );
 560             gtk_label_set_text(label, wxGTK_CONV(text));
 561         }
 562         else
 563         {
 564             wxFAIL_MSG( wxT("wxComboBox: wrong index") );
 565         }
 566     }
 567
 568     InvalidateBestSize();
 569 }
 570
 571 int wxComboBox::FindString( const wxString &item, bool bCase ) const
 572 {
 573     wxCHECK_MSG( m_widget != NULL, wxNOT_FOUND, wxT("invalid combobox") );
 574
 575 #ifdef __WXGTK24__
 576     if (!gtk_check_version(2,4,0))
 577     {
 578         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 579         GtkTreeModel* model = gtk_combo_box_get_model( combobox );
 580         GtkTreeIter iter;
 581         gtk_tree_model_get_iter_first( model, &iter );
 582         if (!gtk_list_store_iter_is_valid(GTK_LIST_STORE(model), &iter ))
 583             return -1;
 584         int count = 0;
 585         do
 586         {
 587             GValue value = { 0, };
 588             gtk_tree_model_get_value( model, &iter, 0, &value );
 589             wxString str = wxGTK_CONV_BACK( g_value_get_string( &value ) );
 590             g_value_unset( &value );
 591
 592             if (item.IsSameAs( str, bCase ) )
 593                 return count;
 594
 595             count++;
 596
 597         } while (gtk_tree_model_iter_next( model, &iter ));
 598     }
 599     else
 600 #endif
 601     {
 602         GtkWidget *list = GTK_COMBO(m_widget)->list;
 603
 604         GList *child = GTK_LIST(list)->children;
 605         int count = 0;
 606         while (child)
 607         {
 608             GtkBin *bin = GTK_BIN( child->data );
 609             GtkLabel *label = GTK_LABEL( bin->child );
 610             wxString str( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 611
 612             if (item.IsSameAs( str , bCase ) )
 613                 return count;
 614
 615             count++;
 616             child = child->next;
 617         }
 618     }
 619
 620     return wxNOT_FOUND;
 621 }
 622
 623 int wxComboBox::GetSelection() const
 624 {
 625 #ifdef __WXGTK24__
 626     if (!gtk_check_version(2,4,0))
 627     {
 628         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 629         return gtk_combo_box_get_active( combobox );
 630     }
 631     else
 632 #endif
 633         // if the popup is currently opened, use the selection as it had been
 634         // before it dropped down
 635         return g_SelectionBeforePopup == wxID_NONE ? GetCurrentSelection()
 636                                                : g_SelectionBeforePopup;
 637 }
 638
 639 int wxComboBox::GetCurrentSelection() const
 640 {
 641     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 642
 643 #ifdef __WXGTK24__
 644     if (!gtk_check_version(2,4,0))
 645     {
 646         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 647         return gtk_combo_box_get_active( combobox );
 648     }
 649     else
 650 #endif
 651     {
 652         GtkWidget *list = GTK_COMBO(m_widget)->list;
 653
 654         GList *selection = GTK_LIST(list)->selection;
 655         if (selection)
 656         {
 657             GList *child = GTK_LIST(list)->children;
 658             int count = 0;
 659             while (child)
 660             {
 661                 if (child->data == selection->data) return count;
 662                 count++;
 663                 child = child->next;
 664             }
 665         }
 666     }
 667
 668     return -1;
 669 }
 670
 671 wxString wxComboBox::GetString(unsigned int n) const
 672 {
 673     wxCHECK_MSG( m_widget != NULL, wxEmptyString, wxT("invalid combobox") );
 674
 675     wxString str;
 676
 677 #ifdef __WXGTK24__
 678     if (!gtk_check_version(2,4,0))
 679     {
 680         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 681         GtkTreeModel *model = gtk_combo_box_get_model( combobox );
 682         GtkTreeIter iter;
 683         if (gtk_tree_model_iter_nth_child (model, &iter, NULL, n))
 684         {
 685             GValue value = { 0, };
 686             gtk_tree_model_get_value( model, &iter, 0, &value );
 687             wxString tmp = wxGTK_CONV_BACK( g_value_get_string( &value ) );
 688             g_value_unset( &value );
 689             return tmp;
 690         }
 691     }
 692     else
 693 #endif
 694     {
 695         GtkWidget *list = GTK_COMBO(m_widget)->list;
 696
 697         GList *child = g_list_nth( GTK_LIST(list)->children, n );
 698         if (child)
 699         {
 700             GtkBin *bin = GTK_BIN( child->data );
 701             GtkLabel *label = GTK_LABEL( bin->child );
 702             str = wxGTK_CONV_BACK( gtk_label_get_text(label) );
 703         }
 704         else
 705         {
 706             wxFAIL_MSG( wxT("wxComboBox: wrong index") );
 707         }
 708     }
 709
 710     return str;
 711 }
 712
 713 wxString wxComboBox::GetStringSelection() const
 714 {
 715     wxCHECK_MSG( m_widget != NULL, wxEmptyString, wxT("invalid combobox") );
 716
 717 #ifdef __WXGTK24__
 718     if (!gtk_check_version(2,4,0))
 719     {
 720         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 721         int sel = gtk_combo_box_get_active( combobox );
 722         if (sel == -1)
 723             return wxEmptyString;
 724         return GetString(sel);
 725     }
 726     else
 727 #endif
 728     {
 729         GtkWidget *list = GTK_COMBO(m_widget)->list;
 730
 731         GList *selection = GTK_LIST(list)->selection;
 732         if (selection)
 733         {
 734             GtkBin *bin = GTK_BIN( selection->data );
 735             GtkLabel *label = GTK_LABEL( bin->child );
 736             wxString tmp( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 737             return tmp;
 738         }
 739
 740         wxFAIL_MSG( wxT("wxComboBox: no selection") );
 741     }
 742
 743     return wxEmptyString;
 744 }
 745
 746 unsigned int wxComboBox::GetCount() const
 747 {
 748     wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid combobox") );
 749
 750 #ifdef __WXGTK24__
 751     if (!gtk_check_version(2,4,0))
 752     {
 753         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 754         GtkTreeModel* model = gtk_combo_box_get_model( combobox );
 755         GtkTreeIter iter;
 756         gtk_tree_model_get_iter_first( model, &iter );
 757         if (!gtk_list_store_iter_is_valid(GTK_LIST_STORE(model), &iter ))
 758             return 0;
 759         unsigned int ret = 1;
 760         while (gtk_tree_model_iter_next( model, &iter ))
 761             ret++;
 762         return ret;
 763     }
 764     else
 765 #endif
 766     {
 767         GtkWidget *list = GTK_COMBO(m_widget)->list;
 768
 769         GList *child = GTK_LIST(list)->children;
 770         unsigned int count = 0;
 771         while (child)
 772         {
 773             count++;
 774             child = child->next;
 775         }
 776         return count;
 777     }
 778 }
 779
 780 void wxComboBox::SetSelection( int n )
 781 {
 782     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 783
 784     DisableEvents();
 785
 786 #ifdef __WXGTK24__
 787     if (!gtk_check_version(2,4,0))
 788     {
 789         GtkComboBox* combobox = GTK_COMBO_BOX( m_widget );
 790         gtk_combo_box_set_active( combobox, n );
 791     }
 792     else
 793 #endif
 794     {
 795         GtkWidget *list = GTK_COMBO(m_widget)->list;
 796         gtk_list_unselect_item( GTK_LIST(list), m_prevSelection );
 797         gtk_list_select_item( GTK_LIST(list), n );
 798         m_prevSelection = n;
 799     }
 800
 801     EnableEvents();
 802 }
 803
 804 wxString wxComboBox::GetValue() const
 805 {
 806     GtkEntry *entry = NULL;
 807 #ifdef __WXGTK24__
 808     if (!gtk_check_version(2,4,0))
 809         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 810     else
 811 #endif
 812         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 813
 814     wxString tmp( wxGTK_CONV_BACK( gtk_entry_get_text( entry ) ) );
 815
 816 #if 0
 817     for (int i = 0; i < wxStrlen(tmp.c_str()) +1; i++)
 818     {
 819         wxChar c = tmp[i];
 820         printf( "%d ", (int) (c) );
 821     }
 822     printf( "\n" );
 823 #endif
 824
 825     return tmp;
 826 }
 827
 828 void wxComboBox::SetValue( const wxString& value )
 829 {
 830     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 831
 832     GtkEntry *entry = NULL;
 833 #ifdef __WXGTK24__
 834     if (!gtk_check_version(2,4,0))
 835         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 836     else
 837 #endif
 838         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 839
 840     wxString tmp;
 841     if (!value.IsNull()) tmp = value;
 842
 843     DisableEvents();
 844     gtk_entry_set_text( entry, wxGTK_CONV( tmp ) );
 845     EnableEvents();
 846
 847     InvalidateBestSize();
 848 }
 849
 850 void wxComboBox::Copy()
 851 {
 852     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 853
 854     GtkEntry *entry = NULL;
 855 #ifdef __WXGTK24__
 856     if (!gtk_check_version(2,4,0))
 857         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 858     else
 859 #endif
 860         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 861
 862     gtk_editable_copy_clipboard(GTK_EDITABLE(entry));
 863 }
 864
 865 void wxComboBox::Cut()
 866 {
 867     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 868
 869     GtkEntry *entry = NULL;
 870 #ifdef __WXGTK24__
 871     if (!gtk_check_version(2,4,0))
 872         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 873     else
 874 #endif
 875         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 876
 877     gtk_editable_cut_clipboard(GTK_EDITABLE(entry));
 878 }
 879
 880 void wxComboBox::Paste()
 881 {
 882     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 883
 884     GtkEntry *entry = NULL;
 885 #ifdef __WXGTK24__
 886     if (!gtk_check_version(2,4,0))
 887         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 888     else
 889 #endif
 890         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 891
 892     gtk_editable_paste_clipboard(GTK_EDITABLE(entry));
 893 }
 894
 895 void wxComboBox::Undo()
 896 {
 897     // TODO
 898 }
 899
 900 void wxComboBox::Redo()
 901 {
 902     // TODO
 903 }
 904
 905 void wxComboBox::SelectAll()
 906 {
 907     SetSelection(0, GetLastPosition());
 908 }
 909
 910 bool wxComboBox::CanUndo() const
 911 {
 912     // TODO
 913     return false;
 914 }
 915
 916 bool wxComboBox::CanRedo() const
 917 {
 918     // TODO
 919     return false;
 920 }
 921
 922 bool wxComboBox::HasSelection() const
 923 {
 924     long from, to;
 925     GetSelection(&from, &to);
 926     return from != to;
 927 }
 928
 929 bool wxComboBox::CanCopy() const
 930 {
 931     // Can copy if there's a selection
 932     return HasSelection();
 933 }
 934
 935 bool wxComboBox::CanCut() const
 936 {
 937     return CanCopy() && IsEditable();
 938 }
 939
 940 bool wxComboBox::CanPaste() const
 941 {
 942     // TODO: check for text on the clipboard
 943     return IsEditable() ;
 944 }
 945
 946 bool wxComboBox::IsEditable() const
 947 {
 948     return !HasFlag(wxCB_READONLY);
 949 }
 950
 951
 952 void wxComboBox::SetInsertionPoint( long pos )
 953 {
 954     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 955
 956     if ( pos == GetLastPosition() )
 957         pos = -1;
 958
 959     GtkEntry *entry = NULL;
 960 #ifdef __WXGTK24__
 961     if (!gtk_check_version(2,4,0))
 962         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 963     else
 964 #endif
 965         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 966
 967     gtk_entry_set_position( entry, (int)pos );
 968 }
 969
 970 long wxComboBox::GetInsertionPoint() const
 971 {
 972     GtkEntry *entry = NULL;
 973 #ifdef __WXGTK24__
 974     if (!gtk_check_version(2,4,0))
 975         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 976     else
 977 #endif
 978         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 979
 980     return (long) gtk_editable_get_position(GTK_EDITABLE(entry));
 981 }
 982
 983 wxTextPos wxComboBox::GetLastPosition() const
 984 {
 985     GtkEntry *entry = NULL;
 986 #ifdef __WXGTK24__
 987     if (!gtk_check_version(2,4,0))
 988         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
 989     else
 990 #endif
 991         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 992
 993     int pos = entry->text_length;
 994     return (long) pos-1;
 995 }
 996
 997 void wxComboBox::Replace( long from, long to, const wxString& value )
 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_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
1010     if (value.IsNull()) return;
1011     gint pos = (gint)to;
1012
1013     // FIXME-UTF8: wouldn't be needed if utf8_str() always returned a buffer
1014 #if wxUSE_UNICODE_UTF8
1015     const char *utf8 = value.utf8_str();
1016 #else
1017     wxCharBuffer buffer(value.utf8_str());
1018     const char *utf8 = buffer;
1019 #endif
1020     gtk_editable_insert_text(GTK_EDITABLE(entry), utf8, strlen(utf8), &pos);
1021 }
1022
1023 void wxComboBox::SetSelection( long from, long to )
1024 {
1025     GtkEntry *entry = NULL;
1026 #ifdef __WXGTK24__
1027     if (!gtk_check_version(2,4,0))
1028         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1029     else
1030 #endif
1031         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1032
1033     gtk_editable_select_region( GTK_EDITABLE(entry), (gint)from, (gint)to );
1034 }
1035
1036 void wxComboBox::GetSelection( long* from, long* to ) const
1037 {
1038     GtkEntry *entry = NULL;
1039 #ifdef __WXGTK24__
1040     if (!gtk_check_version(2,4,0))
1041         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1042     else
1043 #endif
1044         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1045
1046     if (IsEditable())
1047     {
1048         GtkEditable *editable = GTK_EDITABLE(entry);
1049         gint start, end;
1050         gtk_editable_get_selection_bounds(editable, & start, & end);
1051         *from = start;
1052         *to = end;
1053     }
1054 }
1055
1056 void wxComboBox::SetEditable( bool editable )
1057 {
1058     GtkEntry *entry = NULL;
1059 #ifdef __WXGTK24__
1060     if (!gtk_check_version(2,4,0))
1061         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1062     else
1063 #endif
1064         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1065
1066     gtk_entry_set_editable( GTK_ENTRY(entry), editable );
1067 }
1068
1069 void wxComboBox::OnChar( wxKeyEvent &event )
1070 {
1071     if ( event.GetKeyCode() == WXK_RETURN )
1072     {
1073         // GTK automatically selects an item if its in the list
1074         wxCommandEvent eventEnter(wxEVT_COMMAND_TEXT_ENTER, GetId());
1075         eventEnter.SetString( GetValue() );
1076         eventEnter.SetInt( GetSelection() );
1077         eventEnter.SetEventObject( this );
1078
1079         if (!GetEventHandler()->ProcessEvent( eventEnter ))
1080         {
1081             // This will invoke the dialog default action, such
1082             // as the clicking the default button.
1083
1084             wxWindow *top_frame = m_parent;
1085             while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1086                 top_frame = top_frame->GetParent();
1087
1088             if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1089             {
1090                 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1091
1092                 if (window->default_widget)
1093                         gtk_widget_activate (window->default_widget);
1094             }
1095         }
1096
1097         // Catch GTK event so that GTK doesn't open the drop
1098         // down list upon RETURN.
1099         return;
1100     }
1101
1102     event.Skip();
1103 }
1104
1105 void wxComboBox::DisableEvents()
1106 {
1107 #ifdef __WXGTK24__
1108     if (!gtk_check_version(2,4,0))
1109     {
1110         g_signal_handlers_block_by_func(GTK_BIN(m_widget)->child,
1111             (gpointer)gtkcombobox_text_changed_callback, this);
1112
1113         g_signal_handlers_block_by_func(m_widget,
1114             (gpointer)gtkcombobox_changed_callback, this);
1115     }
1116     else
1117 #endif
1118     {
1119         g_signal_handlers_block_by_func(GTK_COMBO(m_widget)->list,
1120             (gpointer) gtkcombo_combo_select_child_callback, this);
1121
1122         g_signal_handlers_block_by_func(GTK_COMBO(m_widget)->entry,
1123             (gpointer) gtkcombo_text_changed_callback, this);
1124     }
1125 }
1126
1127 void wxComboBox::EnableEvents()
1128 {
1129 #ifdef __WXGTK24__
1130     if (!gtk_check_version(2,4,0))
1131     {
1132         g_signal_handlers_unblock_by_func(GTK_BIN(m_widget)->child,
1133             (gpointer)gtkcombobox_text_changed_callback, this);
1134
1135         g_signal_handlers_unblock_by_func(m_widget,
1136             (gpointer)gtkcombobox_changed_callback, this);
1137     }
1138     else
1139 #endif
1140     {
1141         g_signal_handlers_unblock_by_func(GTK_COMBO(m_widget)->list,
1142             (gpointer) gtkcombo_combo_select_child_callback, this);
1143
1144         g_signal_handlers_unblock_by_func(GTK_COMBO(m_widget)->entry,
1145             (gpointer) gtkcombo_text_changed_callback, this);
1146     }
1147 }
1148
1149 void wxComboBox::OnSize( wxSizeEvent &event )
1150 {
1151 #ifdef __WXGTK24__
1152     if (!gtk_check_version(2,4,0))
1153     {
1154         // Do nothing
1155     }
1156     else
1157 #endif
1158     {
1159         // NB: In some situations (e.g. on non-first page of a wizard, if the
1160         //     size used is default size), GtkCombo widget is resized correctly,
1161         //     but it's look is not updated, it's rendered as if it was much wider.
1162         //     No other widgets are affected, so it looks like a bug in GTK+.
1163         //     Manually requesting resize calculation (as gtk_pizza_set_size does)
1164         //     fixes it.
1165         if (GTK_WIDGET_VISIBLE(m_widget))
1166             gtk_widget_queue_resize(m_widget);
1167     }
1168
1169     event.Skip();
1170 }
1171
1172 void wxComboBox::DoApplyWidgetStyle(GtkRcStyle *style)
1173 {
1174 #ifdef __WXGTK24__
1175     if (!gtk_check_version(2,4,0))
1176     {
1177         // Do nothing
1178     }
1179     else
1180 #endif
1181     {
1182 //    gtk_widget_modify_style( GTK_COMBO(m_widget)->button, syle );
1183
1184         gtk_widget_modify_style( GTK_COMBO(m_widget)->entry, style );
1185         gtk_widget_modify_style( GTK_COMBO(m_widget)->list, style );
1186
1187         GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
1188         GList *child = list->children;
1189         while (child)
1190         {
1191             gtk_widget_modify_style( GTK_WIDGET(child->data), style );
1192
1193             GtkBin *bin = GTK_BIN(child->data);
1194             gtk_widget_modify_style( bin->child, style );
1195
1196             child = child->next;
1197         }
1198     }
1199 }
1200
1201 GtkWidget* wxComboBox::GetConnectWidget()
1202 {
1203     GtkEntry *entry = NULL;
1204 #ifdef __WXGTK24__
1205     if (!gtk_check_version(2,4,0))
1206         entry = GTK_ENTRY( GTK_BIN(m_widget)->child );
1207     else
1208 #endif
1209         entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
1210
1211     return GTK_WIDGET( entry );
1212 }
1213
1214 GdkWindow *wxComboBox::GTKGetWindow(wxArrayGdkWindows& windows) const
1215 {
1216 #ifdef __WXGTK24__
1217     if (!gtk_check_version(2,4,0))
1218     {
1219         wxUnusedVar(windows);
1220
1221         return GTK_ENTRY(GTK_BIN(m_widget)->child)->text_area;
1222     }
1223     else
1224 #endif // GTK+ 2.4
1225     {
1226         windows.push_back(GTK_ENTRY(GTK_COMBO(m_widget)->entry)->text_area);
1227         windows.push_back(GTK_COMBO(m_widget)->button->window);
1228
1229         // indicate that we return multiple windows in the windows array
1230         return NULL;
1231     }
1232 }
1233
1234 wxSize wxComboBox::DoGetBestSize() const
1235 {
1236     wxSize ret( wxControl::DoGetBestSize() );
1237
1238     // we know better our horizontal extent: it depends on the longest string
1239     // in the combobox
1240     if ( m_widget )
1241     {
1242         int width;
1243         unsigned int count = GetCount();
1244         for ( unsigned int n = 0; n < count; n++ )
1245         {
1246             GetTextExtent(GetString(n), &width, NULL, NULL, NULL );
1247             if ( width > ret.x )
1248                 ret.x = width;
1249         }
1250     }
1251
1252     // empty combobox should have some reasonable default size too
1253     if ( ret.x < 100 )
1254         ret.x = 100;
1255
1256     CacheBestSize(ret);
1257     return ret;
1258 }
1259
1260 // static
1261 wxVisualAttributes
1262 wxComboBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1263 {
1264 #ifdef __WXGTK24__
1265     if (!gtk_check_version(2,4,0))
1266         return GetDefaultAttributesFromGTKWidget(gtk_combo_box_entry_new, true);
1267     else
1268 #endif
1269         return GetDefaultAttributesFromGTKWidget(gtk_combo_new, true);
1270 }
1271
1272 // ----------------------------------------------------------------------------
1273 // standard event handling
1274 // ----------------------------------------------------------------------------
1275
1276 void wxComboBox::OnCut(wxCommandEvent& WXUNUSED(event))
1277 {
1278     Cut();
1279 }
1280
1281 void wxComboBox::OnCopy(wxCommandEvent& WXUNUSED(event))
1282 {
1283     Copy();
1284 }
1285
1286 void wxComboBox::OnPaste(wxCommandEvent& WXUNUSED(event))
1287 {
1288     Paste();
1289 }
1290
1291 void wxComboBox::OnUndo(wxCommandEvent& WXUNUSED(event))
1292 {
1293     Undo();
1294 }
1295
1296 void wxComboBox::OnRedo(wxCommandEvent& WXUNUSED(event))
1297 {
1298     Redo();
1299 }
1300
1301 void wxComboBox::OnDelete(wxCommandEvent& WXUNUSED(event))
1302 {
1303     long from, to;
1304     GetSelection(& from, & to);
1305     if (from != -1 && to != -1)
1306         Remove(from, to);
1307 }
1308
1309 void wxComboBox::OnSelectAll(wxCommandEvent& WXUNUSED(event))
1310 {
1311     SetSelection(-1, -1);
1312 }
1313
1314 void wxComboBox::OnUpdateCut(wxUpdateUIEvent& event)
1315 {
1316     event.Enable( CanCut() );
1317 }
1318
1319 void wxComboBox::OnUpdateCopy(wxUpdateUIEvent& event)
1320 {
1321     event.Enable( CanCopy() );
1322 }
1323
1324 void wxComboBox::OnUpdatePaste(wxUpdateUIEvent& event)
1325 {
1326     event.Enable( CanPaste() );
1327 }
1328
1329 void wxComboBox::OnUpdateUndo(wxUpdateUIEvent& event)
1330 {
1331     event.Enable( CanUndo() );
1332 }
1333
1334 void wxComboBox::OnUpdateRedo(wxUpdateUIEvent& event)
1335 {
1336     event.Enable( CanRedo() );
1337 }
1338
1339 void wxComboBox::OnUpdateDelete(wxUpdateUIEvent& event)
1340 {
1341     event.Enable(HasSelection() && IsEditable()) ;
1342 }
1343
1344 void wxComboBox::OnUpdateSelectAll(wxUpdateUIEvent& event)
1345 {
1346     event.Enable(GetLastPosition() > 0);
1347 }
1348
1349 #endif