src/gtk/combobox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        combobox.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation "combobox.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #include "wx/combobox.h"
  18
  19 #if wxUSE_COMBOBOX
  20
  21 #include "wx/settings.h"
  22 #include "wx/arrstr.h"
  23 #include "wx/intl.h"
  24
  25 #include "wx/textctrl.h"    // for wxEVT_COMMAND_TEXT_UPDATED
  26
  27 #include "wx/gtk/private.h"
  28
  29 //-----------------------------------------------------------------------------
  30 // idle system
  31 //-----------------------------------------------------------------------------
  32
  33 extern void wxapp_install_idle_handler();
  34 extern bool g_isIdle;
  35
  36 //-----------------------------------------------------------------------------
  37 // data
  38 //-----------------------------------------------------------------------------
  39
  40 extern bool   g_blockEventsOnDrag;
  41
  42 //-----------------------------------------------------------------------------
  43 //  "changed" - typing and list item matches get changed, select-child
  44 //              if it doesn't match an item then just get a single changed
  45 //-----------------------------------------------------------------------------
  46
  47 static void
  48 gtk_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 static void
  67 gtk_dummy_callback(GtkEntry *WXUNUSED(entry), GtkCombo *WXUNUSED(combo))
  68 {
  69 }
  70
  71 //-----------------------------------------------------------------------------
  72 // "select-child" - click/cursor get select-child, changed, select-child
  73 //-----------------------------------------------------------------------------
  74
  75 static void
  76 gtk_combo_select_child_callback( GtkList *WXUNUSED(list), GtkWidget *WXUNUSED(widget), wxComboBox *combo )
  77 {
  78     if (g_isIdle) wxapp_install_idle_handler();
  79
  80     if (!combo->m_hasVMT) return;
  81
  82     if (g_blockEventsOnDrag) return;
  83
  84     int curSelection = combo->GetSelection();
  85
  86     if (combo->m_prevSelection == curSelection) return;
  87
  88     GtkWidget *list = GTK_COMBO(combo->m_widget)->list;
  89     gtk_list_unselect_item( GTK_LIST(list), combo->m_prevSelection );
  90
  91     combo->m_prevSelection = curSelection;
  92
  93     // Quickly set the value of the combo box
  94     // as GTK+ does that only AFTER the event
  95     // is sent.
  96     gtk_signal_disconnect_by_func( GTK_OBJECT(GTK_COMBO(combo->GetHandle())->entry),
  97       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)combo );
  98     combo->SetValue( combo->GetStringSelection() );
  99     gtk_signal_connect( GTK_OBJECT(GTK_COMBO(combo->GetHandle())->entry), "changed",
 100       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)combo );
 101
 102     wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
 103     event.SetInt( curSelection );
 104     event.SetString( combo->GetStringSelection() );
 105     event.SetEventObject( combo );
 106
 107     combo->GetEventHandler()->ProcessEvent( event );
 108
 109     // Now send the event ourselves
 110     wxCommandEvent event2( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
 111     event2.SetString( combo->GetValue() );
 112     event2.SetEventObject( combo );
 113     combo->GetEventHandler()->ProcessEvent( event2 );
 114 }
 115
 116 //-----------------------------------------------------------------------------
 117 // wxComboBox
 118 //-----------------------------------------------------------------------------
 119
 120 IMPLEMENT_DYNAMIC_CLASS(wxComboBox,wxControl)
 121
 122 BEGIN_EVENT_TABLE(wxComboBox, wxControl)
 123     EVT_SIZE(wxComboBox::OnSize)
 124     EVT_CHAR(wxComboBox::OnChar)
 125
 126     EVT_MENU(wxID_CUT, wxComboBox::OnCut)
 127     EVT_MENU(wxID_COPY, wxComboBox::OnCopy)
 128     EVT_MENU(wxID_PASTE, wxComboBox::OnPaste)
 129     EVT_MENU(wxID_UNDO, wxComboBox::OnUndo)
 130     EVT_MENU(wxID_REDO, wxComboBox::OnRedo)
 131     EVT_MENU(wxID_CLEAR, wxComboBox::OnDelete)
 132     EVT_MENU(wxID_SELECTALL, wxComboBox::OnSelectAll)
 133
 134     EVT_UPDATE_UI(wxID_CUT, wxComboBox::OnUpdateCut)
 135     EVT_UPDATE_UI(wxID_COPY, wxComboBox::OnUpdateCopy)
 136     EVT_UPDATE_UI(wxID_PASTE, wxComboBox::OnUpdatePaste)
 137     EVT_UPDATE_UI(wxID_UNDO, wxComboBox::OnUpdateUndo)
 138     EVT_UPDATE_UI(wxID_REDO, wxComboBox::OnUpdateRedo)
 139     EVT_UPDATE_UI(wxID_CLEAR, wxComboBox::OnUpdateDelete)
 140     EVT_UPDATE_UI(wxID_SELECTALL, wxComboBox::OnUpdateSelectAll)
 141 END_EVENT_TABLE()
 142
 143 bool wxComboBox::Create( wxWindow *parent, wxWindowID id,
 144                          const wxString& value,
 145                          const wxPoint& pos, const wxSize& size,
 146                          const wxArrayString& choices,
 147                          long style, const wxValidator& validator,
 148                          const wxString& name )
 149 {
 150     wxCArrayString chs(choices);
 151
 152     return Create( parent, id, value, pos, size, chs.GetCount(),
 153                    chs.GetStrings(), style, validator, name );
 154 }
 155
 156 bool wxComboBox::Create( wxWindow *parent, wxWindowID id, const wxString& value,
 157                          const wxPoint& pos, const wxSize& size,
 158                          int n, const wxString choices[],
 159                          long style, const wxValidator& validator,
 160                          const wxString& name )
 161 {
 162     m_ignoreNextUpdate = FALSE;
 163     m_needParent = TRUE;
 164     m_acceptsFocus = TRUE;
 165     m_prevSelection = 0;
 166
 167     if (!PreCreation( parent, pos, size ) ||
 168         !CreateBase( parent, id, pos, size, style, validator, name ))
 169     {
 170         wxFAIL_MSG( wxT("wxComboBox creation failed") );
 171         return FALSE;
 172     }
 173
 174     m_widget = gtk_combo_new();
 175     GtkCombo *combo = GTK_COMBO(m_widget);
 176
 177     // Disable GTK's broken events ...
 178     gtk_signal_disconnect( GTK_OBJECT(combo->entry), combo->entry_change_id );
 179     // ... and add surogate handler.
 180     combo->entry_change_id = gtk_signal_connect (GTK_OBJECT (combo->entry), "changed",
 181                               (GtkSignalFunc) gtk_dummy_callback, combo);
 182
 183     // make it more useable
 184     gtk_combo_set_use_arrows_always( GTK_COMBO(m_widget), TRUE );
 185
 186     // and case-sensitive
 187     gtk_combo_set_case_sensitive( GTK_COMBO(m_widget), TRUE );
 188
 189     GtkWidget *list = GTK_COMBO(m_widget)->list;
 190
 191 #ifndef __WXGTK20__
 192     // gtk_list_set_selection_mode( GTK_LIST(list), GTK_SELECTION_MULTIPLE );
 193 #endif
 194
 195     for (int i = 0; i < n; i++)
 196     {
 197         GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( choices[i] ) );
 198
 199         m_clientDataList.Append( (wxObject*)NULL );
 200         m_clientObjectList.Append( (wxObject*)NULL );
 201
 202         gtk_container_add( GTK_CONTAINER(list), list_item );
 203
 204         gtk_widget_show( list_item );
 205     }
 206
 207     m_parent->DoAddChild( this );
 208
 209     m_focusWidget = combo->entry;
 210
 211     PostCreation(size);
 212
 213     ConnectWidget( combo->button );
 214
 215     // MSW's combo box shows the value and the selection is -1
 216     gtk_entry_set_text( GTK_ENTRY(combo->entry), wxGTK_CONV(value) );
 217     gtk_list_unselect_all( GTK_LIST(combo->list) );
 218
 219     if (style & wxCB_READONLY)
 220         gtk_entry_set_editable( GTK_ENTRY( combo->entry ), FALSE );
 221
 222     gtk_signal_connect( GTK_OBJECT(combo->entry), "changed",
 223       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
 224
 225     gtk_signal_connect( GTK_OBJECT(combo->list), "select-child",
 226       GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
 227
 228     SetBestSize(size); // need this too because this is a wxControlWithItems
 229
 230     // This is required for tool bar support
 231     wxSize setsize = GetSize();
 232     gtk_widget_set_usize( m_widget, setsize.x, setsize.y );
 233
 234     return TRUE;
 235 }
 236
 237 wxComboBox::~wxComboBox()
 238 {
 239     wxList::compatibility_iterator node = m_clientObjectList.GetFirst();
 240     while (node)
 241     {
 242         wxClientData *cd = (wxClientData*)node->GetData();
 243         if (cd) delete cd;
 244         node = node->GetNext();
 245     }
 246     m_clientObjectList.Clear();
 247
 248     m_clientDataList.Clear();
 249 }
 250
 251 void wxComboBox::SetFocus()
 252 {
 253     if ( m_hasFocus )
 254     {
 255         // don't do anything if we already have focus
 256         return;
 257     }
 258
 259     gtk_widget_grab_focus( m_focusWidget );
 260 }
 261
 262 int wxComboBox::DoAppend( const wxString &item )
 263 {
 264     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 265
 266     DisableEvents();
 267
 268     GtkWidget *list = GTK_COMBO(m_widget)->list;
 269
 270     GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
 271
 272     gtk_container_add( GTK_CONTAINER(list), list_item );
 273
 274     if (GTK_WIDGET_REALIZED(m_widget))
 275     {
 276         gtk_widget_realize( list_item );
 277         gtk_widget_realize( GTK_BIN(list_item)->child );
 278     }
 279
 280     // Apply current widget style to the new list_item
 281     GtkRcStyle *style = CreateWidgetStyle();
 282     if (style)
 283     {
 284         gtk_widget_modify_style( GTK_WIDGET( list_item ), style );
 285         GtkBin *bin = GTK_BIN( list_item );
 286         GtkWidget *label = GTK_WIDGET( bin->child );
 287         gtk_widget_modify_style( label, style );
 288         gtk_rc_style_unref( style );
 289     }
 290
 291     gtk_widget_show( list_item );
 292
 293     const int count = GetCount();
 294
 295     if ( (int)m_clientDataList.GetCount() < count )
 296     m_clientDataList.Append( (wxObject*) NULL );
 297     if ( (int)m_clientObjectList.GetCount() < count )
 298     m_clientObjectList.Append( (wxObject*) NULL );
 299
 300     EnableEvents();
 301
 302     InvalidateBestSize();
 303
 304     return count - 1;
 305 }
 306
 307 int wxComboBox::DoInsert( const wxString &item, int pos )
 308 {
 309     wxCHECK_MSG( !(GetWindowStyle() & wxCB_SORT), -1,
 310                     wxT("can't insert into sorted list"));
 311
 312     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 313
 314     int count = GetCount();
 315     wxCHECK_MSG( (pos >= 0) && (pos <= count), -1, wxT("invalid index") );
 316
 317     if (pos == count)
 318         return Append(item);
 319
 320     DisableEvents();
 321
 322     GtkWidget *list = GTK_COMBO(m_widget)->list;
 323
 324     GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
 325
 326     GList *gitem_list = g_list_alloc ();
 327     gitem_list->data = list_item;
 328     gtk_list_insert_items( GTK_LIST (list), gitem_list, pos );
 329
 330     if (GTK_WIDGET_REALIZED(m_widget))
 331     {
 332         gtk_widget_realize( list_item );
 333         gtk_widget_realize( GTK_BIN(list_item)->child );
 334
 335         ApplyWidgetStyle();
 336     }
 337
 338     gtk_widget_show( list_item );
 339
 340     count = GetCount();
 341
 342     if ( (int)m_clientDataList.GetCount() < count )
 343     m_clientDataList.Insert( pos, (wxObject*) NULL );
 344     if ( (int)m_clientObjectList.GetCount() < count )
 345     m_clientObjectList.Insert( pos, (wxObject*) NULL );
 346
 347     EnableEvents();
 348
 349     InvalidateBestSize();
 350
 351     return pos;
 352 }
 353
 354 void wxComboBox::DoSetItemClientData( int n, void* clientData )
 355 {
 356     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 357
 358     wxList::compatibility_iterator node = m_clientDataList.Item( n );
 359     if (!node) return;
 360
 361     node->SetData( (wxObject*) clientData );
 362 }
 363
 364 void* wxComboBox::DoGetItemClientData( int n ) const
 365 {
 366     wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid combobox") );
 367
 368     wxList::compatibility_iterator node = m_clientDataList.Item( n );
 369
 370     return node ? node->GetData() : NULL;
 371 }
 372
 373 void wxComboBox::DoSetItemClientObject( int n, wxClientData* clientData )
 374 {
 375     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 376
 377     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 378     if (!node) return;
 379
 380     // wxItemContainer already deletes data for us
 381
 382     node->SetData( (wxObject*) clientData );
 383 }
 384
 385 wxClientData* wxComboBox::DoGetItemClientObject( int n ) const
 386 {
 387     wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, wxT("invalid combobox") );
 388
 389     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 390
 391     return node ? (wxClientData*) node->GetData() : NULL;
 392 }
 393
 394 void wxComboBox::Clear()
 395 {
 396     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 397
 398     DisableEvents();
 399
 400     GtkWidget *list = GTK_COMBO(m_widget)->list;
 401     gtk_list_clear_items( GTK_LIST(list), 0, GetCount() );
 402
 403     wxList::compatibility_iterator node = m_clientObjectList.GetFirst();
 404     while (node)
 405     {
 406         wxClientData *cd = (wxClientData*)node->GetData();
 407         if (cd) delete cd;
 408         node = node->GetNext();
 409     }
 410     m_clientObjectList.Clear();
 411
 412     m_clientDataList.Clear();
 413
 414     EnableEvents();
 415
 416     InvalidateBestSize();
 417 }
 418
 419 void wxComboBox::Delete( int n )
 420 {
 421     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 422
 423     GtkList *listbox = GTK_LIST( GTK_COMBO(m_widget)->list );
 424
 425     GList *child = g_list_nth( listbox->children, n );
 426
 427     if (!child)
 428     {
 429         wxFAIL_MSG(wxT("wrong index"));
 430         return;
 431     }
 432
 433     DisableEvents();
 434
 435     GList *list = g_list_append( (GList*) NULL, child->data );
 436     gtk_list_remove_items( listbox, list );
 437     g_list_free( list );
 438
 439     wxList::compatibility_iterator node = m_clientObjectList.Item( n );
 440     if (node)
 441     {
 442         wxClientData *cd = (wxClientData*)node->GetData();
 443         if (cd) delete cd;
 444         m_clientObjectList.Erase( node );
 445     }
 446
 447     node = m_clientDataList.Item( n );
 448     if (node)
 449         m_clientDataList.Erase( node );
 450
 451     EnableEvents();
 452
 453     InvalidateBestSize();
 454 }
 455
 456 void wxComboBox::SetString(int n, const wxString &text)
 457 {
 458     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 459
 460     GtkWidget *list = GTK_COMBO(m_widget)->list;
 461
 462     GList *child = g_list_nth( GTK_LIST(list)->children, n );
 463     if (child)
 464     {
 465         GtkBin *bin = GTK_BIN( child->data );
 466         GtkLabel *label = GTK_LABEL( bin->child );
 467         gtk_label_set_text(label, wxGTK_CONV(text));
 468     }
 469     else
 470     {
 471         wxFAIL_MSG( wxT("wxComboBox: wrong index") );
 472     }
 473
 474     InvalidateBestSize();
 475 }
 476
 477 int wxComboBox::FindString( const wxString &item ) const
 478 {
 479     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 480
 481     GtkWidget *list = GTK_COMBO(m_widget)->list;
 482
 483     GList *child = GTK_LIST(list)->children;
 484     int count = 0;
 485     while (child)
 486     {
 487         GtkBin *bin = GTK_BIN( child->data );
 488         GtkLabel *label = GTK_LABEL( bin->child );
 489 #ifdef __WXGTK20__
 490         wxString str( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 491 #else
 492         wxString str( label->label );
 493 #endif
 494         if (item == str)
 495             return count;
 496
 497         count++;
 498         child = child->next;
 499     }
 500
 501     return wxNOT_FOUND;
 502 }
 503
 504 int wxComboBox::GetSelection() const
 505 {
 506     wxCHECK_MSG( m_widget != NULL, -1, wxT("invalid combobox") );
 507
 508     GtkWidget *list = GTK_COMBO(m_widget)->list;
 509
 510     GList *selection = GTK_LIST(list)->selection;
 511     if (selection)
 512     {
 513         GList *child = GTK_LIST(list)->children;
 514         int count = 0;
 515         while (child)
 516         {
 517             if (child->data == selection->data) return count;
 518             count++;
 519             child = child->next;
 520         }
 521     }
 522
 523     return -1;
 524 }
 525
 526 wxString wxComboBox::GetString( int n ) const
 527 {
 528     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid combobox") );
 529
 530     GtkWidget *list = GTK_COMBO(m_widget)->list;
 531
 532     wxString str;
 533     GList *child = g_list_nth( GTK_LIST(list)->children, n );
 534     if (child)
 535     {
 536         GtkBin *bin = GTK_BIN( child->data );
 537         GtkLabel *label = GTK_LABEL( bin->child );
 538 #ifdef __WXGTK20__
 539         str = wxGTK_CONV_BACK( gtk_label_get_text(label) );
 540 #else
 541         str = wxString( label->label );
 542 #endif
 543     }
 544     else
 545     {
 546         wxFAIL_MSG( wxT("wxComboBox: wrong index") );
 547     }
 548
 549     return str;
 550 }
 551
 552 wxString wxComboBox::GetStringSelection() const
 553 {
 554     wxCHECK_MSG( m_widget != NULL, wxT(""), wxT("invalid combobox") );
 555
 556     GtkWidget *list = GTK_COMBO(m_widget)->list;
 557
 558     GList *selection = GTK_LIST(list)->selection;
 559     if (selection)
 560     {
 561         GtkBin *bin = GTK_BIN( selection->data );
 562         GtkLabel *label = GTK_LABEL( bin->child );
 563 #ifdef __WXGTK20__
 564         wxString tmp( wxGTK_CONV_BACK( gtk_label_get_text(label) ) );
 565 #else
 566         wxString tmp( label->label );
 567 #endif
 568         return tmp;
 569     }
 570
 571     wxFAIL_MSG( wxT("wxComboBox: no selection") );
 572
 573     return wxT("");
 574 }
 575
 576 int wxComboBox::GetCount() const
 577 {
 578     wxCHECK_MSG( m_widget != NULL, 0, wxT("invalid combobox") );
 579
 580     GtkWidget *list = GTK_COMBO(m_widget)->list;
 581
 582     GList *child = GTK_LIST(list)->children;
 583     int count = 0;
 584     while (child) { count++; child = child->next; }
 585     return count;
 586 }
 587
 588 void wxComboBox::SetSelection( int n )
 589 {
 590     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 591
 592     DisableEvents();
 593
 594     GtkWidget *list = GTK_COMBO(m_widget)->list;
 595     gtk_list_unselect_item( GTK_LIST(list), m_prevSelection );
 596     gtk_list_select_item( GTK_LIST(list), n );
 597     m_prevSelection = n;
 598
 599     EnableEvents();
 600 }
 601
 602 bool wxComboBox::SetStringSelection( const wxString &string )
 603 {
 604     wxCHECK_MSG( m_widget != NULL, false, wxT("invalid combobox") );
 605
 606     int res = FindString( string );
 607     if (res == -1) return false;
 608     SetSelection( res );
 609     return true;
 610 }
 611
 612 wxString wxComboBox::GetValue() const
 613 {
 614     GtkEntry *entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 615     wxString tmp( wxGTK_CONV_BACK( gtk_entry_get_text( entry ) ) );
 616
 617 #if 0
 618     for (int i = 0; i < wxStrlen(tmp.c_str()) +1; i++)
 619     {
 620         wxChar c = tmp[i];
 621         printf( "%d ", (int) (c) );
 622     }
 623     printf( "\n" );
 624 #endif
 625
 626     return tmp;
 627 }
 628
 629 void wxComboBox::SetValue( const wxString& value )
 630 {
 631     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 632
 633     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 634     wxString tmp = wxT("");
 635     if (!value.IsNull()) tmp = value;
 636     gtk_entry_set_text( GTK_ENTRY(entry), wxGTK_CONV( tmp ) );
 637
 638     InvalidateBestSize();
 639 }
 640
 641 void wxComboBox::Copy()
 642 {
 643     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 644
 645     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 646     gtk_editable_copy_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG );
 647 }
 648
 649 void wxComboBox::Cut()
 650 {
 651     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 652
 653     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 654     gtk_editable_cut_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG );
 655 }
 656
 657 void wxComboBox::Paste()
 658 {
 659     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 660
 661     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 662     gtk_editable_paste_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG);
 663 }
 664
 665 void wxComboBox::Undo()
 666 {
 667     // TODO
 668 }
 669
 670 void wxComboBox::Redo()
 671 {
 672     // TODO
 673 }
 674
 675 void wxComboBox::SelectAll()
 676 {
 677     SetSelection(0, GetLastPosition());
 678 }
 679
 680 bool wxComboBox::CanUndo() const
 681 {
 682     // TODO
 683     return false;
 684 }
 685
 686 bool wxComboBox::CanRedo() const
 687 {
 688     // TODO
 689     return false;
 690 }
 691
 692 bool wxComboBox::HasSelection() const
 693 {
 694     long from, to;
 695     GetSelection(&from, &to);
 696     return from != to;
 697 }
 698
 699 bool wxComboBox::CanCopy() const
 700 {
 701     // Can copy if there's a selection
 702     return HasSelection();
 703 }
 704
 705 bool wxComboBox::CanCut() const
 706 {
 707     return CanCopy() && IsEditable();
 708 }
 709
 710 bool wxComboBox::CanPaste() const
 711 {
 712     // TODO: check for text on the clipboard
 713     return IsEditable() ;
 714 }
 715
 716 bool wxComboBox::IsEditable() const
 717 {
 718     return !HasFlag(wxCB_READONLY);
 719 }
 720
 721
 722 void wxComboBox::SetInsertionPoint( long pos )
 723 {
 724     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 725
 726     if ( pos == GetLastPosition() )
 727         pos = -1;
 728
 729     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 730     gtk_entry_set_position( GTK_ENTRY(entry), (int)pos );
 731 }
 732
 733 long wxComboBox::GetInsertionPoint() const
 734 {
 735     return (long) GET_EDITABLE_POS( GTK_COMBO(m_widget)->entry );
 736 }
 737
 738 long wxComboBox::GetLastPosition() const
 739 {
 740     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 741     int pos = GTK_ENTRY(entry)->text_length;
 742     return (long) pos-1;
 743 }
 744
 745 void wxComboBox::Replace( long from, long to, const wxString& value )
 746 {
 747     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 748
 749     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 750     gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
 751     if (value.IsNull()) return;
 752     gint pos = (gint)to;
 753
 754 #if wxUSE_UNICODE
 755     wxCharBuffer buffer = wxConvUTF8.cWX2MB( value );
 756     gtk_editable_insert_text( GTK_EDITABLE(entry), (const char*) buffer, strlen( (const char*) buffer ), &pos );
 757 #else
 758     gtk_editable_insert_text( GTK_EDITABLE(entry), value.c_str(), value.Length(), &pos );
 759 #endif
 760 }
 761
 762 void wxComboBox::SetSelection( long from, long to )
 763 {
 764     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 765     gtk_editable_select_region( GTK_EDITABLE(entry), (gint)from, (gint)to );
 766 }
 767
 768 void wxComboBox::GetSelection( long* from, long* to ) const
 769 {
 770     if (IsEditable())
 771     {
 772 #ifdef __WXGTK20__
 773         GtkEditable *editable = GTK_EDITABLE(GTK_COMBO(m_widget)->entry);
 774         gint start, end;
 775         gtk_editable_get_selection_bounds(editable, & start, & end);
 776         *from = start;
 777         *to = end;
 778 #else
 779         *from = (long) editable->selection_start_pos;
 780         *to = (long) editable->selection_end_pos;
 781 #endif
 782     }
 783 }
 784
 785 void wxComboBox::SetEditable( bool editable )
 786 {
 787     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 788     gtk_entry_set_editable( GTK_ENTRY(entry), editable );
 789 }
 790
 791 void wxComboBox::OnChar( wxKeyEvent &event )
 792 {
 793     if ( event.GetKeyCode() == WXK_RETURN )
 794     {
 795         // GTK automatically selects an item if its in the list
 796         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, GetId());
 797         event.SetString( GetValue() );
 798         event.SetInt( GetSelection() );
 799         event.SetEventObject( this );
 800
 801         if (!GetEventHandler()->ProcessEvent( event ))
 802         {
 803             // This will invoke the dialog default action, such
 804             // as the clicking the default button.
 805
 806             wxWindow *top_frame = m_parent;
 807             while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
 808                 top_frame = top_frame->GetParent();
 809
 810             if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
 811             {
 812                 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
 813
 814                 if (window->default_widget)
 815                         gtk_widget_activate (window->default_widget);
 816             }
 817         }
 818
 819         // Catch GTK event so that GTK doesn't open the drop
 820         // down list upon RETURN.
 821         return;
 822     }
 823
 824     event.Skip();
 825 }
 826
 827 void wxComboBox::DisableEvents()
 828 {
 829     gtk_signal_disconnect_by_func( GTK_OBJECT(GTK_COMBO(m_widget)->list),
 830       GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
 831     gtk_signal_disconnect_by_func( GTK_OBJECT(GTK_COMBO(m_widget)->entry),
 832       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
 833 }
 834
 835 void wxComboBox::EnableEvents()
 836 {
 837     gtk_signal_connect( GTK_OBJECT(GTK_COMBO(m_widget)->list), "select-child",
 838       GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
 839     gtk_signal_connect( GTK_OBJECT(GTK_COMBO(m_widget)->entry), "changed",
 840       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
 841 }
 842
 843 void wxComboBox::OnSize( wxSizeEvent &event )
 844 {
 845     // NB: In some situations (e.g. on non-first page of a wizard, if the
 846     //     size used is default size), GtkCombo widget is resized correctly,
 847     //     but it's look is not updated, it's rendered as if it was much wider.
 848     //     No other widgets are affected, so it looks like a bug in GTK+.
 849     //     Manually requesting resize calculation (as gtk_pizza_set_size does)
 850     //     fixes it.
 851     if (GTK_WIDGET_VISIBLE(m_widget))
 852         gtk_widget_queue_resize(m_widget);
 853
 854     event.Skip();
 855 }
 856
 857 void wxComboBox::DoApplyWidgetStyle(GtkRcStyle *style)
 858 {
 859 //    gtk_widget_modify_style( GTK_COMBO(m_widget)->button, syle );
 860
 861     gtk_widget_modify_style( GTK_COMBO(m_widget)->entry, style );
 862     gtk_widget_modify_style( GTK_COMBO(m_widget)->list, style );
 863
 864     GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
 865     GList *child = list->children;
 866     while (child)
 867     {
 868         gtk_widget_modify_style( GTK_WIDGET(child->data), style );
 869
 870         GtkBin *bin = GTK_BIN(child->data);
 871         gtk_widget_modify_style( bin->child, style );
 872
 873         child = child->next;
 874     }
 875 }
 876
 877 GtkWidget* wxComboBox::GetConnectWidget()
 878 {
 879     return GTK_COMBO(m_widget)->entry;
 880 }
 881
 882 bool wxComboBox::IsOwnGtkWindow( GdkWindow *window )
 883 {
 884     return ( (window == GTK_ENTRY( GTK_COMBO(m_widget)->entry )->text_area) ||
 885              (window == GTK_COMBO(m_widget)->button->window ) );
 886 }
 887
 888 wxSize wxComboBox::DoGetBestSize() const
 889 {
 890     wxSize ret( wxControl::DoGetBestSize() );
 891
 892     // we know better our horizontal extent: it depends on the longest string
 893     // in the combobox
 894     if ( m_widget )
 895     {
 896         int width;
 897         size_t count = GetCount();
 898         for ( size_t n = 0; n < count; n++ )
 899         {
 900             GetTextExtent( GetString(n), &width, NULL, NULL, NULL );
 901             if ( width > ret.x )
 902                 ret.x = width;
 903         }
 904     }
 905
 906     // empty combobox should have some reasonable default size too
 907     if ( ret.x < 100 )
 908         ret.x = 100;
 909
 910     CacheBestSize(ret);
 911     return ret;
 912 }
 913
 914 // static
 915 wxVisualAttributes
 916 wxComboBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 917 {
 918     return GetDefaultAttributesFromGTKWidget(gtk_combo_new, true);
 919 }
 920
 921 // ----------------------------------------------------------------------------
 922 // standard event handling
 923 // ----------------------------------------------------------------------------
 924
 925 void wxComboBox::OnCut(wxCommandEvent& WXUNUSED(event))
 926 {
 927     Cut();
 928 }
 929
 930 void wxComboBox::OnCopy(wxCommandEvent& WXUNUSED(event))
 931 {
 932     Copy();
 933 }
 934
 935 void wxComboBox::OnPaste(wxCommandEvent& WXUNUSED(event))
 936 {
 937     Paste();
 938 }
 939
 940 void wxComboBox::OnUndo(wxCommandEvent& WXUNUSED(event))
 941 {
 942     Undo();
 943 }
 944
 945 void wxComboBox::OnRedo(wxCommandEvent& WXUNUSED(event))
 946 {
 947     Redo();
 948 }
 949
 950 void wxComboBox::OnDelete(wxCommandEvent& WXUNUSED(event))
 951 {
 952     long from, to;
 953     GetSelection(& from, & to);
 954     if (from != -1 && to != -1)
 955         Remove(from, to);
 956 }
 957
 958 void wxComboBox::OnSelectAll(wxCommandEvent& WXUNUSED(event))
 959 {
 960     SetSelection(-1, -1);
 961 }
 962
 963 void wxComboBox::OnUpdateCut(wxUpdateUIEvent& event)
 964 {
 965     event.Enable( CanCut() );
 966 }
 967
 968 void wxComboBox::OnUpdateCopy(wxUpdateUIEvent& event)
 969 {
 970     event.Enable( CanCopy() );
 971 }
 972
 973 void wxComboBox::OnUpdatePaste(wxUpdateUIEvent& event)
 974 {
 975     event.Enable( CanPaste() );
 976 }
 977
 978 void wxComboBox::OnUpdateUndo(wxUpdateUIEvent& event)
 979 {
 980     event.Enable( CanUndo() );
 981 }
 982
 983 void wxComboBox::OnUpdateRedo(wxUpdateUIEvent& event)
 984 {
 985     event.Enable( CanRedo() );
 986 }
 987
 988 void wxComboBox::OnUpdateDelete(wxUpdateUIEvent& event)
 989 {
 990     event.Enable(HasSelection() && IsEditable()) ;
 991 }
 992
 993 void wxComboBox::OnUpdateSelectAll(wxUpdateUIEvent& event)
 994 {
 995     event.Enable(GetLastPosition() > 0);
 996 }
 997
 998 #endif
 999