src/gtk1/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 #ifdef __GNUG__
  11 #pragma implementation "combobox.h"
  12 #endif
  13
  14 #include "wx/combobox.h"
  15
  16 #if wxUSE_COMBOBOX
  17
  18 #include "wx/settings.h"
  19 #include "wx/intl.h"
  20
  21 #include "wx/textctrl.h"    // for wxEVT_COMMAND_TEXT_UPDATED
  22
  23 #include "wx/gtk/private.h"
  24
  25 //-----------------------------------------------------------------------------
  26 // idle system
  27 //-----------------------------------------------------------------------------
  28
  29 extern void wxapp_install_idle_handler();
  30 extern bool g_isIdle;
  31
  32 //-----------------------------------------------------------------------------
  33 // data
  34 //-----------------------------------------------------------------------------
  35
  36 extern bool   g_blockEventsOnDrag;
  37
  38 //-----------------------------------------------------------------------------
  39 // "select-child" - click/cursor get select-child, changed, select-child
  40 //-----------------------------------------------------------------------------
  41
  42 static void
  43 gtk_combo_select_child_callback( GtkList *WXUNUSED(list), GtkWidget *WXUNUSED(widget), wxComboBox *combo )
  44 {
  45     if (g_isIdle) wxapp_install_idle_handler();
  46
  47     if (!combo->m_hasVMT) return;
  48
  49     if (g_blockEventsOnDrag) return;
  50
  51     int curSelection = combo->GetSelection();
  52
  53     if (combo->m_prevSelection != curSelection)
  54     {
  55         GtkWidget *list = GTK_COMBO(combo->m_widget)->list;
  56         gtk_list_unselect_item( GTK_LIST(list), combo->m_prevSelection );
  57     }
  58     combo->m_prevSelection = curSelection;
  59
  60     wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
  61     event.SetInt( curSelection );
  62     event.SetString( combo->GetStringSelection() );
  63     event.SetEventObject( combo );
  64
  65     combo->GetEventHandler()->ProcessEvent( event );
  66 }
  67
  68 //-----------------------------------------------------------------------------
  69 //  "changed" - typing and list item matches get changed, select-child
  70 //              if it doesn't match an item then just get a single changed
  71 //-----------------------------------------------------------------------------
  72
  73 static void
  74 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
  75 {
  76     if (g_isIdle) wxapp_install_idle_handler();
  77
  78     if (!combo->m_hasVMT) return;
  79
  80     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, combo->GetId() );
  81     event.SetString( combo->GetValue() );
  82     event.SetEventObject( combo );
  83     combo->GetEventHandler()->ProcessEvent( event );
  84 }
  85
  86 static void
  87 gtk_dummy_callback(GtkEntry *WXUNUSED(entry), GtkCombo *WXUNUSED(combo))
  88 {
  89 }
  90
  91 //-----------------------------------------------------------------------------
  92 // wxComboBox
  93 //-----------------------------------------------------------------------------
  94
  95 IMPLEMENT_DYNAMIC_CLASS(wxComboBox,wxControl)
  96
  97 BEGIN_EVENT_TABLE(wxComboBox, wxControl)
  98     EVT_SIZE(wxComboBox::OnSize)
  99     EVT_CHAR(wxComboBox::OnChar)
 100 END_EVENT_TABLE()
 101
 102 bool wxComboBox::Create( wxWindow *parent, wxWindowID id, const wxString& value,
 103                          const wxPoint& pos, const wxSize& size,
 104                          int n, const wxString choices[],
 105                          long style, const wxValidator& validator,
 106                          const wxString& name )
 107 {
 108     m_alreadySent = FALSE;
 109     m_needParent = TRUE;
 110     m_acceptsFocus = TRUE;
 111     m_prevSelection = 0;
 112
 113     if (!PreCreation( parent, pos, size ) ||
 114         !CreateBase( parent, id, pos, size, style, validator, name ))
 115     {
 116         wxFAIL_MSG( wxT("wxComboBox creation failed") );
 117         return FALSE;
 118     }
 119
 120     m_widget = gtk_combo_new();
 121     GtkCombo *combo = GTK_COMBO(m_widget);
 122
 123     // Disable GTK's broken events ...
 124     gtk_signal_disconnect( GTK_OBJECT(combo->entry), combo->entry_change_id );
 125     // ... and add surogate handler.
 126     combo->entry_change_id = gtk_signal_connect (GTK_OBJECT (combo->entry), "changed",
 127                               (GtkSignalFunc) gtk_dummy_callback, combo);
 128
 129     // make it more useable
 130     gtk_combo_set_use_arrows_always( GTK_COMBO(m_widget), TRUE );
 131
 132     // and case-sensitive
 133     gtk_combo_set_case_sensitive( GTK_COMBO(m_widget), TRUE );
 134
 135     GtkWidget *list = GTK_COMBO(m_widget)->list;
 136
 137 #ifndef __WXGTK20__
 138     // gtk_list_set_selection_mode( GTK_LIST(list), GTK_SELECTION_MULTIPLE );
 139 #endif
 140
 141     for (int i = 0; i < n; i++)
 142     {
 143         GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( choices[i] ) );
 144
 145         m_clientDataList.Append( (wxObject*)NULL );
 146         m_clientObjectList.Append( (wxObject*)NULL );
 147
 148         gtk_container_add( GTK_CONTAINER(list), list_item );
 149
 150         gtk_widget_show( list_item );
 151     }
 152
 153     m_parent->DoAddChild( this );
 154
 155     m_focusWidget = combo->entry;
 156
 157     PostCreation();
 158
 159     ConnectWidget( combo->button );
 160
 161     // MSW's combo box shows the value and the selection is -1
 162     gtk_entry_set_text( GTK_ENTRY(combo->entry), wxGTK_CONV(value) );
 163     gtk_list_unselect_all( GTK_LIST(combo->list) );
 164
 165     if (style & wxCB_READONLY)
 166         gtk_entry_set_editable( GTK_ENTRY( combo->entry ), FALSE );
 167
 168     gtk_signal_connect( GTK_OBJECT(combo->entry), "changed",
 169       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
 170
 171     gtk_signal_connect( GTK_OBJECT(combo->list), "select-child",
 172       GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
 173
 174     wxSize size_best( DoGetBestSize() );
 175     wxSize new_size( size );
 176     if (new_size.x == -1)
 177         new_size.x = size_best.x;
 178     if (new_size.y == -1)
 179         new_size.y = size_best.y;
 180     if (new_size.y > size_best.y)
 181         new_size.y = size_best.y;
 182     if ((new_size.x != size.x) || (new_size.y != size.y))
 183     {
 184         SetSize( new_size.x, new_size.y );
 185
 186         // This is required for tool bar support
 187         gtk_widget_set_usize( m_widget, new_size.x, new_size.y );
 188     }
 189
 190     SetBackgroundColour( wxSystemSettings::GetColour( wxSYS_COLOUR_WINDOW ) );
 191     SetForegroundColour( parent->GetForegroundColour() );
 192
 193     Show( TRUE );
 194
 195     return TRUE;
 196 }
 197
 198 wxComboBox::~wxComboBox()
 199 {
 200     wxNode *node = m_clientObjectList.GetFirst();
 201     while (node)
 202     {
 203         wxClientData *cd = (wxClientData*)node->GetData();
 204         if (cd) delete cd;
 205         node = node->GetNext();
 206     }
 207     m_clientObjectList.Clear();
 208
 209     m_clientDataList.Clear();
 210 }
 211
 212 void wxComboBox::SetFocus()
 213 {
 214     if ( m_hasFocus )
 215     {
 216         // don't do anything if we already have focus
 217         return;
 218     }
 219
 220     gtk_widget_grab_focus( m_focusWidget );
 221 }
 222
 223 void wxComboBox::AppendCommon( const wxString &item )
 224 {
 225     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 226
 227     DisableEvents();
 228
 229     GtkWidget *list = GTK_COMBO(m_widget)->list;
 230
 231     GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
 232
 233     gtk_container_add( GTK_CONTAINER(list), list_item );
 234
 235     if (GTK_WIDGET_REALIZED(m_widget))
 236     {
 237         gtk_widget_realize( list_item );
 238         gtk_widget_realize( GTK_BIN(list_item)->child );
 239
 240         if (m_widgetStyle) ApplyWidgetStyle();
 241     }
 242
 243     gtk_widget_show( list_item );
 244
 245     EnableEvents();
 246 }
 247
 248 void wxComboBox::Append( const wxString &item )
 249 {
 250     m_clientDataList.Append( (wxObject*) NULL );
 251     m_clientObjectList.Append( (wxObject*) NULL );
 252
 253     AppendCommon( item );
 254 }
 255
 256 void wxComboBox::Append( const wxString &item, void *clientData )
 257 {
 258     m_clientDataList.Append( (wxObject*) clientData );
 259     m_clientObjectList.Append( (wxObject*)NULL );
 260
 261     AppendCommon( item );
 262 }
 263
 264 void wxComboBox::Append( const wxString &item, wxClientData *clientData )
 265 {
 266     m_clientDataList.Append( (wxObject*) NULL );
 267     m_clientObjectList.Append( (wxObject*) clientData );
 268
 269     AppendCommon( item );
 270 }
 271
 272 void wxComboBox::InsertCommon( const wxString &item, int pos )
 273 {
 274     wxCHECK_RET(!(GetWindowStyle() & wxCB_SORT), wxT("can't insert into sorted list"));
 275     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 276
 277     int count = GetCount();
 278     wxCHECK_RET((pos>=0) && (pos<=count), wxT("invalid index"));
 279     if (pos == count)
 280     {
 281         AppendCommon(item);
 282         return;
 283     }
 284
 285     DisableEvents();
 286
 287     GtkWidget *list = GTK_COMBO(m_widget)->list;
 288
 289     GtkWidget *list_item = gtk_list_item_new_with_label( wxGTK_CONV( item ) );
 290
 291     GList *gitem_list = g_list_alloc ();
 292     gitem_list->data = list_item;
 293     gtk_list_insert_items( GTK_LIST (list), gitem_list, pos );
 294
 295     if (GTK_WIDGET_REALIZED(m_widget))
 296     {
 297         gtk_widget_realize( list_item );
 298         gtk_widget_realize( GTK_BIN(list_item)->child );
 299
 300         if (m_widgetStyle) ApplyWidgetStyle();
 301     }
 302
 303     gtk_widget_show( list_item );
 304
 305     EnableEvents();
 306 }
 307
 308 void wxComboBox::Insert( const wxString &item, int pos )
 309 {
 310     wxCHECK_RET(!(GetWindowStyle() & wxCB_SORT), wxT("can't insert into sorted list"));
 311     int count = GetCount();
 312     wxCHECK_RET((pos>=0) && (pos<=count), wxT("invalid index"));
 313     if (pos == count)
 314     {
 315         Append(item);
 316         return;
 317     }
 318
 319     m_clientDataList.Insert( pos, (wxObject*) NULL );
 320     m_clientObjectList.Insert( pos, (wxObject*) NULL );
 321
 322     InsertCommon( item, pos );
 323 }
 324
 325 void wxComboBox::Insert( const wxString &item, int pos, void *clientData )
 326 {
 327     wxCHECK_RET(!(GetWindowStyle() & wxCB_SORT), wxT("can't insert into sorted list"));
 328     int count = GetCount();
 329     wxCHECK_RET((pos>=0) && (pos<=count), wxT("invalid index"));
 330     if (pos == count)
 331     {
 332         Append(item, clientData);
 333         return;
 334     }
 335
 336     m_clientDataList.Insert( pos, (wxObject*) clientData );
 337     m_clientObjectList.Insert( pos, (wxObject*)NULL );
 338
 339     InsertCommon( item, pos );
 340 }
 341
 342 void wxComboBox::Insert( const wxString &item, int pos, wxClientData *clientData )
 343 {
 344     wxCHECK_RET(!(GetWindowStyle() & wxCB_SORT), wxT("can't insert into sorted list"));
 345     int count = GetCount();
 346     wxCHECK_RET((pos>=0) && (pos<=count), wxT("invalid index"));
 347     if (pos == count)
 348     {
 349         Append(item, clientData);
 350         return;
 351     }
 352
 353     m_clientDataList.Insert( pos, (wxObject*) NULL );
 354     m_clientObjectList.Insert( pos, (wxObject*) clientData );
 355
 356     InsertCommon( item, pos );
 357 }
 358
 359 void wxComboBox::SetClientData( int n, void* clientData )
 360 {
 361     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 362
 363     wxNode *node = m_clientDataList.Item( n );
 364     if (!node) return;
 365
 366     node->SetData( (wxObject*) clientData );
 367 }
 368
 369 void* wxComboBox::GetClientData( int n ) const
 370 {
 371     wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid combobox") );
 372
 373     wxNode *node = m_clientDataList.Item( n );
 374
 375     return node ? node->GetData() : NULL;
 376 }
 377
 378 void wxComboBox::SetClientObject( int n, wxClientData* clientData )
 379 {
 380     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 381
 382     wxNode *node = m_clientObjectList.Item( n );
 383     if (!node) return;
 384
 385     wxClientData *cd = (wxClientData*) node->GetData();
 386     if (cd) delete cd;
 387
 388     node->SetData( (wxObject*) clientData );
 389 }
 390
 391 wxClientData* wxComboBox::GetClientObject( int n ) const
 392 {
 393     wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, wxT("invalid combobox") );
 394
 395     wxNode *node = m_clientObjectList.Item( n );
 396
 397     return node ? (wxClientData*) node->GetData() : NULL;
 398 }
 399
 400 void wxComboBox::Clear()
 401 {
 402     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 403
 404     DisableEvents();
 405
 406     GtkWidget *list = GTK_COMBO(m_widget)->list;
 407     gtk_list_clear_items( GTK_LIST(list), 0, Number() );
 408
 409     wxNode *node = m_clientObjectList.GetFirst();
 410     while (node)
 411     {
 412         wxClientData *cd = (wxClientData*)node->GetData();
 413         if (cd) delete cd;
 414         node = node->GetNext();
 415     }
 416     m_clientObjectList.Clear();
 417
 418     m_clientDataList.Clear();
 419
 420     EnableEvents();
 421 }
 422
 423 void wxComboBox::Delete( int n )
 424 {
 425     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 426
 427     GtkList *listbox = GTK_LIST( GTK_COMBO(m_widget)->list );
 428
 429     GList *child = g_list_nth( listbox->children, n );
 430
 431     if (!child)
 432     {
 433         wxFAIL_MSG(wxT("wrong index"));
 434         return;
 435     }
 436
 437     DisableEvents();
 438
 439     GList *list = g_list_append( (GList*) NULL, child->data );
 440     gtk_list_remove_items( listbox, list );
 441     g_list_free( list );
 442
 443     wxNode *node = m_clientObjectList.Item( n );
 444     if (node)
 445     {
 446         wxClientData *cd = (wxClientData*)node->GetData();
 447         if (cd) delete cd;
 448         m_clientObjectList.DeleteNode( node );
 449     }
 450
 451     node = m_clientDataList.Item( n );
 452     if (node)
 453         m_clientDataList.DeleteNode( node );
 454
 455     EnableEvents();
 456 }
 457
 458 void wxComboBox::SetString(int n, const wxString &text)
 459 {
 460     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 461
 462     GtkWidget *list = GTK_COMBO(m_widget)->list;
 463
 464     GList *child = g_list_nth( GTK_LIST(list)->children, n );
 465     if (child)
 466     {
 467         GtkBin *bin = GTK_BIN( child->data );
 468         GtkLabel *label = GTK_LABEL( bin->child );
 469         gtk_label_set_text(label, wxGTK_CONV(text));
 470     }
 471     else
 472     {
 473         wxFAIL_MSG( wxT("wxComboBox: wrong index") );
 474     }
 475 }
 476
 477 int wxComboBox::FindString( const wxString &item )
 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::Number() 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 void wxComboBox::SetStringSelection( const wxString &string )
 603 {
 604     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 605
 606     int res = FindString( string );
 607     if (res == -1) return;
 608     SetSelection( res );
 609 }
 610
 611 wxString wxComboBox::GetValue() const
 612 {
 613     GtkEntry *entry = GTK_ENTRY( GTK_COMBO(m_widget)->entry );
 614     wxString tmp( wxGTK_CONV_BACK( gtk_entry_get_text( entry ) ) );
 615
 616 #if 0
 617     for (int i = 0; i < wxStrlen(tmp.c_str()) +1; i++)
 618     {
 619         wxChar c = tmp[i];
 620         printf( "%d ", (int) (c) );
 621     }
 622     printf( "\n" );
 623 #endif
 624
 625     return tmp;
 626 }
 627
 628 void wxComboBox::SetValue( const wxString& value )
 629 {
 630     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 631
 632     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 633     wxString tmp = wxT("");
 634     if (!value.IsNull()) tmp = value;
 635     gtk_entry_set_text( GTK_ENTRY(entry), wxGTK_CONV( tmp ) );
 636 }
 637
 638 void wxComboBox::Copy()
 639 {
 640     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 641
 642     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 643     gtk_editable_copy_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG );
 644 }
 645
 646 void wxComboBox::Cut()
 647 {
 648     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 649
 650     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 651     gtk_editable_cut_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG );
 652 }
 653
 654 void wxComboBox::Paste()
 655 {
 656     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 657
 658     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 659     gtk_editable_paste_clipboard( GTK_EDITABLE(entry) DUMMY_CLIPBOARD_ARG);
 660 }
 661
 662 void wxComboBox::SetInsertionPoint( long pos )
 663 {
 664     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 665
 666     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 667     gtk_entry_set_position( GTK_ENTRY(entry), (int)pos );
 668 }
 669
 670 void wxComboBox::SetInsertionPointEnd()
 671 {
 672     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 673
 674     SetInsertionPoint( -1 );
 675 }
 676
 677 long wxComboBox::GetInsertionPoint() const
 678 {
 679     return (long) GET_EDITABLE_POS( GTK_COMBO(m_widget)->entry );
 680 }
 681
 682 long wxComboBox::GetLastPosition() const
 683 {
 684     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 685     int pos = GTK_ENTRY(entry)->text_length;
 686     return (long) pos-1;
 687 }
 688
 689 void wxComboBox::Replace( long from, long to, const wxString& value )
 690 {
 691     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 692
 693     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 694     gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
 695     if (value.IsNull()) return;
 696     gint pos = (gint)to;
 697
 698 #if wxUSE_UNICODE
 699     wxCharBuffer buffer = wxConvUTF8.cWX2MB( value );
 700     gtk_editable_insert_text( GTK_EDITABLE(entry), (const char*) buffer, strlen( (const char*) buffer ), &pos );
 701 #else
 702     gtk_editable_insert_text( GTK_EDITABLE(entry), value.c_str(), value.Length(), &pos );
 703 #endif
 704 }
 705
 706 void wxComboBox::Remove(long from, long to)
 707 {
 708     wxCHECK_RET( m_widget != NULL, wxT("invalid combobox") );
 709
 710     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 711     gtk_editable_delete_text( GTK_EDITABLE(entry), (gint)from, (gint)to );
 712 }
 713
 714 void wxComboBox::SetSelection( long from, long to )
 715 {
 716     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 717     gtk_editable_select_region( GTK_EDITABLE(entry), (gint)from, (gint)to );
 718 }
 719
 720 void wxComboBox::SetEditable( bool editable )
 721 {
 722     GtkWidget *entry = GTK_COMBO(m_widget)->entry;
 723     gtk_entry_set_editable( GTK_ENTRY(entry), editable );
 724 }
 725
 726 void wxComboBox::OnChar( wxKeyEvent &event )
 727 {
 728     if ( event.GetKeyCode() == WXK_RETURN )
 729     {
 730         // GTK automatically selects an item if its in the list
 731         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, GetId());
 732         event.SetString( GetValue() );
 733         event.SetInt( GetSelection() );
 734         event.SetEventObject( this );
 735
 736         if (!GetEventHandler()->ProcessEvent( event ))
 737         {
 738             // This will invoke the dialog default action, such
 739             // as the clicking the default button.
 740
 741             wxWindow *top_frame = m_parent;
 742             while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
 743                 top_frame = top_frame->GetParent();
 744
 745             if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
 746             {
 747                 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
 748
 749                 if (window->default_widget)
 750                     gtk_widget_activate (window->default_widget);
 751             }
 752         }
 753
 754         // Catch GTK event so that GTK doesn't open the drop
 755         // down list upon RETURN.
 756         return;
 757     }
 758
 759     event.Skip();
 760 }
 761
 762 void wxComboBox::DisableEvents()
 763 {
 764     gtk_signal_disconnect_by_func( GTK_OBJECT(GTK_COMBO(m_widget)->list),
 765       GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
 766     gtk_signal_disconnect_by_func( GTK_OBJECT(GTK_COMBO(m_widget)->entry),
 767       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
 768 }
 769
 770 void wxComboBox::EnableEvents()
 771 {
 772     gtk_signal_connect( GTK_OBJECT(GTK_COMBO(m_widget)->list), "select-child",
 773       GTK_SIGNAL_FUNC(gtk_combo_select_child_callback), (gpointer)this );
 774     gtk_signal_connect( GTK_OBJECT(GTK_COMBO(m_widget)->entry), "changed",
 775       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this );
 776 }
 777
 778 void wxComboBox::OnSize( wxSizeEvent &event )
 779 {
 780     event.Skip();
 781
 782 #if 0
 783     int w = 21;
 784     gtk_widget_set_usize( GTK_COMBO(m_widget)->entry, m_width-w-1, m_height );
 785
 786     gtk_widget_set_uposition( GTK_COMBO(m_widget)->button, m_x+m_width-w, m_y );
 787     gtk_widget_set_usize( GTK_COMBO(m_widget)->button, w, m_height );
 788 #endif // 0
 789 }
 790
 791 void wxComboBox::ApplyWidgetStyle()
 792 {
 793     SetWidgetStyle();
 794
 795 //    gtk_widget_set_style( GTK_COMBO(m_widget)->button, m_widgetStyle );
 796     gtk_widget_set_style( GTK_COMBO(m_widget)->entry, m_widgetStyle );
 797     gtk_widget_set_style( GTK_COMBO(m_widget)->list, m_widgetStyle );
 798
 799     GtkList *list = GTK_LIST( GTK_COMBO(m_widget)->list );
 800     GList *child = list->children;
 801     while (child)
 802     {
 803         gtk_widget_set_style( GTK_WIDGET(child->data), m_widgetStyle );
 804
 805         GtkBin *bin = GTK_BIN(child->data);
 806         gtk_widget_set_style( bin->child, m_widgetStyle );
 807
 808         child = child->next;
 809     }
 810 }
 811
 812 GtkWidget* wxComboBox::GetConnectWidget()
 813 {
 814     return GTK_COMBO(m_widget)->entry;
 815 }
 816
 817 bool wxComboBox::IsOwnGtkWindow( GdkWindow *window )
 818 {
 819     return ( (window == GTK_ENTRY( GTK_COMBO(m_widget)->entry )->text_area) ||
 820              (window == GTK_COMBO(m_widget)->button->window ) );
 821 }
 822
 823 wxSize wxComboBox::DoGetBestSize() const
 824 {
 825     wxSize ret( wxControl::DoGetBestSize() );
 826
 827     // we know better our horizontal extent: it depends on the longest string
 828     // in the combobox
 829     ret.x = 0;
 830     if ( m_widget )
 831     {
 832         int width;
 833         size_t count = GetCount();
 834         for ( size_t n = 0; n < count; n++ )
 835         {
 836             GetTextExtent( GetString(n), &width, NULL, NULL, NULL, &m_font );
 837             if ( width > ret.x )
 838                 ret.x = width;
 839         }
 840     }
 841
 842     // empty combobox should have some reasonable default size too
 843     if ( ret.x < 100 )
 844         ret.x = 100;
 845     return ret;
 846 }
 847
 848 #endif