src/gtk1/listbox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        listbox.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11 #ifdef __GNUG__
  12 #pragma implementation "listbox.h"
  13 #endif
  14
  15 #include "wx/listbox.h"
  16
  17 #if wxUSE_LISTBOX
  18
  19 #include "wx/dynarray.h"
  20 #include "wx/utils.h"
  21 #include "wx/intl.h"
  22 #include "wx/checklst.h"
  23 #include "wx/settings.h"
  24
  25 #if wxUSE_TOOLTIPS
  26 #include "wx/tooltip.h"
  27 #endif
  28
  29 #if wxUSE_DRAG_AND_DROP
  30 #include "wx/dnd.h"
  31 #endif
  32
  33 #include "gdk/gdk.h"
  34 #include "gtk/gtk.h"
  35
  36 //-----------------------------------------------------------------------------
  37 // idle system
  38 //-----------------------------------------------------------------------------
  39
  40 extern void wxapp_install_idle_handler();
  41 extern bool g_isIdle;
  42
  43 //-------------------------------------------------------------------------
  44 // conditional compilation
  45 //-------------------------------------------------------------------------
  46
  47 #if (GTK_MINOR_VERSION > 0)
  48     #define NEW_GTK_SCROLL_CODE
  49 #endif
  50
  51 //-----------------------------------------------------------------------------
  52 // private functions
  53 //-----------------------------------------------------------------------------
  54
  55 #if wxUSE_CHECKLISTBOX
  56
  57 #define CHECKBOX_STRING "[-] "
  58
  59 // checklistboxes have "[±] " prepended to their lables, this macro removes it
  60 // (NB: 4 below is the length of CHECKBOX_STRING above)
  61 //
  62 // the argument to it is a "const char *" pointer
  63 #define GET_REAL_LABEL(label) ((m_hasCheckBoxes)?(label)+4 : (label))
  64
  65 #else // !wxUSE_CHECKLISTBOX
  66
  67 #define GET_REAL_LABEL(label) (label)
  68
  69 #endif // wxUSE_CHECKLISTBOX
  70
  71 //-----------------------------------------------------------------------------
  72 // data
  73 //-----------------------------------------------------------------------------
  74
  75 extern bool   g_blockEventsOnDrag;
  76 extern bool   g_blockEventsOnScroll;
  77
  78 static bool   g_hasDoubleClicked = FALSE;
  79
  80 //-----------------------------------------------------------------------------
  81 // "button_release_event"
  82 //-----------------------------------------------------------------------------
  83
  84 /* we would normally emit a wxEVT_COMMAND_LISTBOX_DOUBLECLICKED event once
  85    a GDK_2BUTTON_PRESS occurs, but this has the particular problem of the
  86    listbox keeping the focus until it receives a GDK_BUTTON_RELEASE event.
  87    this can lead to race conditions so that we emit the dclick event
  88    after the GDK_BUTTON_RELEASE event after the GDK_2BUTTON_PRESS event */
  89
  90 static gint
  91 gtk_listbox_button_release_callback( GtkWidget *widget, GdkEventButton *gdk_event, wxListBox *listbox )
  92 {
  93     if (g_isIdle) wxapp_install_idle_handler();
  94
  95     if (g_blockEventsOnDrag) return FALSE;
  96     if (g_blockEventsOnScroll) return FALSE;
  97
  98     if (!listbox->m_hasVMT) return FALSE;
  99
 100     if (!g_hasDoubleClicked) return FALSE;
 101
 102         wxCommandEvent event( wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, listbox->GetId() );
 103         event.SetEventObject( listbox );
 104
 105         wxArrayInt aSelections;
 106         int count = listbox->GetSelections(aSelections);
 107         if ( count > 0 )
 108         {
 109             event.m_commandInt = aSelections[0] ;
 110             event.m_clientData = listbox->GetClientData( event.m_commandInt );
 111             wxString str(listbox->GetString(event.m_commandInt));
 112             if (!str.IsEmpty()) event.m_commandString = str;
 113         }
 114         else
 115         {
 116             event.m_commandInt = -1 ;
 117             event.m_commandString.Empty();
 118         }
 119
 120         listbox->GetEventHandler()->ProcessEvent( event );
 121
 122     return FALSE;
 123 }
 124
 125 //-----------------------------------------------------------------------------
 126 // "button_press_event"
 127 //-----------------------------------------------------------------------------
 128
 129 static gint
 130 gtk_listbox_button_press_callback( GtkWidget *widget, GdkEventButton *gdk_event, wxListBox *listbox )
 131 {
 132     if (g_isIdle) wxapp_install_idle_handler();
 133
 134     if (g_blockEventsOnDrag) return FALSE;
 135     if (g_blockEventsOnScroll) return FALSE;
 136
 137     if (!listbox->m_hasVMT) return FALSE;
 138
 139     int sel = listbox->GetIndex( widget );
 140
 141 #if wxUSE_CHECKLISTBOX
 142     if ((listbox->m_hasCheckBoxes) && (gdk_event->x < 15) && (gdk_event->type != GDK_2BUTTON_PRESS))
 143     {
 144         wxCheckListBox *clb = (wxCheckListBox *)listbox;
 145
 146         clb->Check( sel, !clb->IsChecked(sel) );
 147
 148         wxCommandEvent event( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, listbox->GetId() );
 149         event.SetEventObject( listbox );
 150         event.SetInt( sel );
 151         listbox->GetEventHandler()->ProcessEvent( event );
 152     }
 153 #endif // wxUSE_CHECKLISTBOX
 154
 155     /* emit wxEVT_COMMAND_LISTBOX_DOUBLECLICKED later */
 156     g_hasDoubleClicked = (gdk_event->type == GDK_2BUTTON_PRESS);
 157
 158     return FALSE;
 159 }
 160
 161 //-----------------------------------------------------------------------------
 162 // "key_press_event"
 163 //-----------------------------------------------------------------------------
 164
 165 #if wxUSE_CHECKLISTBOX
 166 static gint
 167 gtk_listbox_key_press_callback( GtkWidget *widget, GdkEventKey *gdk_event, wxListBox *listbox )
 168 {
 169     if (g_isIdle) wxapp_install_idle_handler();
 170
 171     if (g_blockEventsOnDrag) return FALSE;
 172
 173     if (!listbox->m_hasVMT) return FALSE;
 174
 175     if (gdk_event->keyval != ' ') return FALSE;
 176
 177     int sel = listbox->GetIndex( widget );
 178
 179     wxCheckListBox *clb = (wxCheckListBox *)listbox;
 180
 181     clb->Check( sel, !clb->IsChecked(sel) );
 182
 183     wxCommandEvent event( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, listbox->GetId() );
 184     event.SetEventObject( listbox );
 185     event.SetInt( sel );
 186     listbox->GetEventHandler()->ProcessEvent( event );
 187
 188     return FALSE;
 189 }
 190 #endif // wxUSE_CHECKLISTBOX
 191
 192 //-----------------------------------------------------------------------------
 193 // "select" and "deselect"
 194 //-----------------------------------------------------------------------------
 195
 196 static void gtk_listitem_select_callback( GtkWidget *WXUNUSED(widget), wxListBox *listbox )
 197 {
 198     if (g_isIdle) wxapp_install_idle_handler();
 199
 200     if (!listbox->m_hasVMT) return;
 201     if (g_blockEventsOnDrag) return;
 202
 203     wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, listbox->GetId() );
 204
 205     wxArrayInt aSelections;
 206     int count = listbox->GetSelections(aSelections);
 207     if ( count > 0 )
 208     {
 209         event.m_commandInt = aSelections[0] ;
 210         event.m_clientData = listbox->GetClientData( event.m_commandInt );
 211         wxString str(listbox->GetString(event.m_commandInt));
 212         if (!str.IsEmpty()) event.m_commandString = str;
 213     }
 214     else
 215     {
 216         event.m_commandInt = -1 ;
 217         event.m_commandString.Empty();
 218     }
 219
 220     event.SetEventObject( listbox );
 221
 222     listbox->GetEventHandler()->ProcessEvent( event );
 223 }
 224
 225 //-----------------------------------------------------------------------------
 226 // wxListBox
 227 //-----------------------------------------------------------------------------
 228
 229 IMPLEMENT_DYNAMIC_CLASS(wxListBox,wxControl)
 230
 231 wxListBox::wxListBox()
 232 {
 233     m_list = (GtkList *) NULL;
 234 #if wxUSE_CHECKLISTBOX
 235     m_hasCheckBoxes = FALSE;
 236 #endif // wxUSE_CHECKLISTBOX
 237 }
 238
 239 bool wxListBox::Create( wxWindow *parent, wxWindowID id,
 240                         const wxPoint &pos, const wxSize &size,
 241                         int n, const wxString choices[],
 242                         long style, const wxValidator& validator, const wxString &name )
 243 {
 244     m_needParent = TRUE;
 245     m_acceptsFocus = TRUE;
 246
 247     PreCreation( parent, id, pos, size, style, name );
 248
 249     SetValidator( validator );
 250
 251     m_widget = gtk_scrolled_window_new( (GtkAdjustment*) NULL, (GtkAdjustment*) NULL );
 252     if (style & wxLB_ALWAYS_SB)
 253     {
 254       gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
 255         GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS );
 256     }
 257     else
 258     {
 259       gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
 260         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 261     }
 262
 263     m_list = GTK_LIST( gtk_list_new() );
 264
 265     GtkSelectionMode mode = GTK_SELECTION_BROWSE;
 266     if (style & wxLB_MULTIPLE)
 267         mode = GTK_SELECTION_MULTIPLE;
 268     else if (style & wxLB_EXTENDED)
 269         mode = GTK_SELECTION_EXTENDED;
 270
 271     gtk_list_set_selection_mode( GTK_LIST(m_list), mode );
 272
 273 #ifdef NEW_GTK_SCROLL_CODE
 274     gtk_scrolled_window_add_with_viewport( GTK_SCROLLED_WINDOW(m_widget), GTK_WIDGET(m_list) );
 275 #else
 276     gtk_container_add( GTK_CONTAINER(m_widget), GTK_WIDGET(m_list) );
 277 #endif
 278
 279     gtk_widget_show( GTK_WIDGET(m_list) );
 280
 281     wxSize newSize = size;
 282     if (newSize.x == -1) newSize.x = 100;
 283     if (newSize.y == -1) newSize.y = 110;
 284     SetSize( newSize.x, newSize.y );
 285
 286     for (int i = 0; i < n; i++)
 287     {
 288         m_clientDataList.Append( (wxObject*) NULL );
 289         m_clientObjectList.Append( (wxObject*) NULL );
 290
 291         GtkWidget *list_item;
 292
 293         wxString str(choices[i]);
 294 #if wxUSE_CHECKLISTBOX
 295         if (m_hasCheckBoxes)
 296         {
 297             str.Prepend(CHECKBOX_STRING);
 298         }
 299 #endif // wxUSE_CHECKLISTBOX
 300
 301         list_item = gtk_list_item_new_with_label( str.mbc_str() );
 302
 303         gtk_container_add( GTK_CONTAINER(m_list), list_item );
 304
 305         gtk_signal_connect( GTK_OBJECT(list_item), "select",
 306           GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 307
 308         if (style & wxLB_MULTIPLE)
 309             gtk_signal_connect( GTK_OBJECT(list_item), "deselect",
 310               GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 311
 312         gtk_signal_connect( GTK_OBJECT(list_item),
 313                             "button_press_event",
 314                             (GtkSignalFunc)gtk_listbox_button_press_callback,
 315                             (gpointer) this );
 316
 317         gtk_signal_connect_after( GTK_OBJECT(list_item),
 318                             "button_release_event",
 319                             (GtkSignalFunc)gtk_listbox_button_release_callback,
 320                             (gpointer) this );
 321
 322 #if wxUSE_CHECKLISTBOX
 323         if (m_hasCheckBoxes)
 324         {
 325             gtk_signal_connect( GTK_OBJECT(list_item),
 326                             "key_press_event",
 327                             (GtkSignalFunc)gtk_listbox_key_press_callback,
 328                             (gpointer)this );
 329         }
 330 #endif // wxUSE_CHECKLISTBOX
 331
 332         ConnectWidget( list_item );
 333
 334         gtk_widget_show( list_item );
 335     }
 336
 337     m_parent->DoAddChild( this );
 338
 339     PostCreation();
 340
 341     SetBackgroundColour( wxSystemSettings::GetSystemColour( wxSYS_COLOUR_WINDOW ) );
 342     SetForegroundColour( parent->GetForegroundColour() );
 343     SetFont( parent->GetFont() );
 344
 345     Show( TRUE );
 346
 347     return TRUE;
 348 }
 349
 350 wxListBox::~wxListBox()
 351 {
 352     Clear();
 353 }
 354
 355 void wxListBox::InsertItems(int nItems, const wxString items[], int pos)
 356 {
 357     wxCHECK_RET( m_list != NULL, _T("invalid listbox") );
 358
 359     GList *children = m_list->children;
 360     int length = g_list_length(children);
 361     wxCHECK_RET( pos <= length, _T("invalid index in wxListBox::InsertItems") );
 362
 363     // VZ: it seems that GTK 1.0.6 doesn't has a function to insert an item
 364     //     into a listbox at the given position, this is why we first delete
 365     //     all items after this position, then append these items and then
 366     //     reappend back the old ones.
 367
 368     // first detach the old items
 369     int n; // loop var
 370
 371     if ( pos == length )
 372     {
 373         // no need to do anything complicated
 374         for ( n = 0; n < nItems; n++ )
 375         {
 376             Append(items[n]);
 377         }
 378
 379         return;
 380     }
 381
 382     wxArrayString deletedLabels;
 383     wxArrayPtrVoid deletedData;
 384     wxArrayInt deletedChecks;   // only for check list boxes
 385
 386     GList *child = g_list_nth( children, pos );
 387     for ( n = 0; child != NULL; n++, child = child->next )
 388     {
 389         // save label
 390         GtkBin *bin = GTK_BIN( child->data );
 391         GtkLabel *label = GTK_LABEL( bin->child );
 392
 393         wxString str(GET_REAL_LABEL(label->label),*wxConvCurrent);
 394         deletedLabels.Add(str);
 395
 396         // save data
 397         void *clientData = NULL;
 398         wxNode *node = NULL;
 399
 400         if ( n < (int)m_clientObjectList.GetCount() )
 401             node = m_clientObjectList.Nth( n );
 402
 403         if ( node )
 404         {
 405             clientData = node->GetData();
 406             m_clientObjectList.DeleteNode( node );
 407         }
 408
 409         if ( !clientData )
 410         {
 411             if ( n < (int)m_clientDataList.GetCount() )
 412                 node = m_clientDataList.Nth( n );
 413
 414             if ( node )
 415             {
 416                 clientData = node->GetData();
 417                 node = m_clientDataList.Nth( n );
 418             }
 419         }
 420
 421         deletedData.Add(clientData);
 422
 423 #if wxUSE_CHECKLISTBOX
 424         // save check state
 425         if ( m_hasCheckBoxes )
 426         {
 427             deletedChecks.Add(((wxCheckListBox *)this)->IsChecked(pos + n));
 428         }
 429 #endif // wxUSE_CHECKLISTBOX
 430     }
 431
 432     int nDeletedCount = n;
 433
 434     gtk_list_clear_items( m_list, pos, length );
 435
 436     // now append the new items
 437     for ( n = 0; n < nItems; n++ )
 438     {
 439         Append(items[n]);
 440     }
 441
 442     // and append the old items too
 443     pos += nItems;  // now the indices are shifter
 444     for ( n = 0; n < nDeletedCount; n++ )
 445     {
 446         Append(deletedLabels[n], deletedData[n]);
 447
 448 #if wxUSE_CHECKLISTBOX
 449         if ( m_hasCheckBoxes )
 450         {
 451             ((wxCheckListBox *)this)->Check(pos + n, (bool)deletedChecks[n]);
 452         }
 453 #endif // wxUSE_CHECKLISTBOX
 454     }
 455 }
 456
 457 void wxListBox::AppendCommon( const wxString &item )
 458 {
 459     wxCHECK_RET( m_list != NULL, _T("invalid listbox") );
 460
 461     GtkWidget *list_item;
 462
 463     wxString label(item);
 464 #if wxUSE_CHECKLISTBOX
 465     if (m_hasCheckBoxes)
 466     {
 467         label.Prepend(CHECKBOX_STRING);
 468     }
 469 #endif // wxUSE_CHECKLISTBOX
 470
 471     list_item = gtk_list_item_new_with_label( label.mbc_str() );
 472
 473     gtk_container_add( GTK_CONTAINER(m_list), list_item );
 474
 475     gtk_signal_connect( GTK_OBJECT(list_item), "select",
 476       GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 477
 478     if (HasFlag(wxLB_MULTIPLE))
 479         gtk_signal_connect( GTK_OBJECT(list_item), "deselect",
 480           GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 481
 482     gtk_signal_connect( GTK_OBJECT(list_item),
 483                         "button_press_event",
 484                         (GtkSignalFunc)gtk_listbox_button_press_callback,
 485                         (gpointer) this );
 486
 487     gtk_signal_connect_after( GTK_OBJECT(list_item),
 488                         "button_release_event",
 489                         (GtkSignalFunc)gtk_listbox_button_release_callback,
 490                         (gpointer) this );
 491
 492 #if wxUSE_CHECKLISTBOX
 493     if (m_hasCheckBoxes)
 494     {
 495        gtk_signal_connect( GTK_OBJECT(list_item),
 496                            "key_press_event",
 497                            (GtkSignalFunc)gtk_listbox_key_press_callback,
 498                            (gpointer)this );
 499     }
 500 #endif // wxUSE_CHECKLISTBOX
 501
 502     gtk_widget_show( list_item );
 503
 504     ConnectWidget( list_item );
 505
 506     if (GTK_WIDGET_REALIZED(m_widget))
 507     {
 508         gtk_widget_realize( list_item );
 509         gtk_widget_realize( GTK_BIN(list_item)->child );
 510
 511         if (m_widgetStyle) ApplyWidgetStyle();
 512
 513 #if wxUSE_DRAG_AND_DROP
 514 #ifndef NEW_GTK_DND_CODE
 515         if (m_dropTarget) m_dropTarget->RegisterWidget( list_item );
 516 #endif
 517 #endif
 518
 519 #if wxUSE_TOOLTIPS
 520         if (m_tooltip) m_tooltip->Apply( this );
 521 #endif
 522     }
 523 }
 524
 525 void wxListBox::Append( const wxString &item )
 526 {
 527     m_clientDataList.Append( (wxObject*) NULL );
 528     m_clientObjectList.Append( (wxObject*) NULL );
 529
 530     AppendCommon( item );
 531 }
 532
 533 void wxListBox::Append( const wxString &item, void *clientData )
 534 {
 535     m_clientDataList.Append( (wxObject*) clientData );
 536     m_clientObjectList.Append( (wxObject*) NULL );
 537
 538     AppendCommon( item );
 539 }
 540
 541 void wxListBox::Append( const wxString &item, wxClientData *clientData )
 542 {
 543     m_clientObjectList.Append( (wxObject*) clientData );
 544     m_clientDataList.Append( (wxObject*) NULL );
 545
 546     AppendCommon( item );
 547 }
 548
 549 void wxListBox::SetClientData( int n, void* clientData )
 550 {
 551     wxCHECK_RET( m_widget != NULL, _T("invalid combobox") );
 552
 553     wxNode *node = m_clientDataList.Nth( n );
 554     if (!node) return;
 555
 556     node->SetData( (wxObject*) clientData );
 557 }
 558
 559 void* wxListBox::GetClientData( int n )
 560 {
 561     wxCHECK_MSG( m_widget != NULL, NULL, _T("invalid combobox") );
 562
 563     wxNode *node = m_clientDataList.Nth( n );
 564     if (!node) return NULL;
 565
 566     return node->Data();
 567 }
 568
 569 void wxListBox::SetClientObject( int n, wxClientData* clientData )
 570 {
 571     wxCHECK_RET( m_widget != NULL, _T("invalid combobox") );
 572
 573     wxNode *node = m_clientObjectList.Nth( n );
 574     if (!node) return;
 575
 576     wxClientData *cd = (wxClientData*) node->Data();
 577     if (cd) delete cd;
 578
 579     node->SetData( (wxObject*) clientData );
 580 }
 581
 582 wxClientData* wxListBox::GetClientObject( int n )
 583 {
 584     wxCHECK_MSG( m_widget != NULL, (wxClientData*)NULL, _T("invalid combobox") );
 585
 586     wxNode *node = m_clientObjectList.Nth( n );
 587     if (!node) return (wxClientData*) NULL;
 588
 589     return (wxClientData*) node->Data();
 590 }
 591
 592 void wxListBox::Clear()
 593 {
 594     wxCHECK_RET( m_list != NULL, _T("invalid listbox") );
 595
 596     gtk_list_clear_items( m_list, 0, Number() );
 597
 598     wxNode *node = m_clientObjectList.First();
 599     while (node)
 600     {
 601         wxClientData *cd = (wxClientData*)node->Data();
 602         if (cd) delete cd;
 603         node = node->Next();
 604     }
 605     m_clientObjectList.Clear();
 606
 607     m_clientDataList.Clear();
 608 }
 609
 610 void wxListBox::Delete( int n )
 611 {
 612     wxCHECK_RET( m_list != NULL, _T("invalid listbox") );
 613
 614     GList *child = g_list_nth( m_list->children, n );
 615
 616     wxCHECK_RET( child, _T("wrong listbox index") );
 617
 618     GList *list = g_list_append( (GList*) NULL, child->data );
 619     gtk_list_remove_items( m_list, list );
 620     g_list_free( list );
 621
 622     wxNode *node = m_clientObjectList.Nth( n );
 623     if (node)
 624     {
 625         wxClientData *cd = (wxClientData*)node->Data();
 626         if (cd) delete cd;
 627         m_clientObjectList.DeleteNode( node );
 628     }
 629
 630     node = m_clientDataList.Nth( n );
 631     if (node)
 632     {
 633         m_clientDataList.DeleteNode( node );
 634     }
 635 }
 636
 637 void wxListBox::Deselect( int n )
 638 {
 639     wxCHECK_RET( m_list != NULL, _T("invalid listbox") );
 640
 641     gtk_list_unselect_item( m_list, n );
 642 }
 643
 644 int wxListBox::FindString( const wxString &item ) const
 645 {
 646     wxCHECK_MSG( m_list != NULL, -1, _T("invalid listbox") );
 647
 648     GList *child = m_list->children;
 649     int count = 0;
 650     while (child)
 651     {
 652         GtkBin *bin = GTK_BIN( child->data );
 653         GtkLabel *label = GTK_LABEL( bin->child );
 654
 655         wxString str = wxString(GET_REAL_LABEL(label->label),*wxConvCurrent);
 656
 657         if (str == item)
 658             return count;
 659
 660         count++;
 661         child = child->next;
 662     }
 663
 664   // it's not an error if the string is not found -> no wxCHECK
 665
 666   return -1;
 667 }
 668
 669 int wxListBox::GetSelection() const
 670 {
 671     wxCHECK_MSG( m_list != NULL, -1, _T("invalid listbox") );
 672
 673     GList *child = m_list->children;
 674     int count = 0;
 675     while (child)
 676     {
 677         if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED) return count;
 678         count++;
 679         child = child->next;
 680     }
 681     return -1;
 682 }
 683
 684 int wxListBox::GetSelections( wxArrayInt& aSelections ) const
 685 {
 686     wxCHECK_MSG( m_list != NULL, -1, _T("invalid listbox") );
 687
 688     // get the number of selected items first
 689     GList *child = m_list->children;
 690     int count = 0;
 691     for (child = m_list->children; child != NULL; child = child->next)
 692     {
 693         if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED)
 694             count++;
 695     }
 696
 697     aSelections.Empty();
 698
 699     if (count > 0)
 700     {
 701         // now fill the list
 702         aSelections.Alloc(count); // optimization attempt
 703         int i = 0;
 704         for (child = m_list->children; child != NULL; child = child->next, i++)
 705         {
 706             if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED)
 707                  aSelections.Add(i);
 708         }
 709     }
 710
 711     return count;
 712 }
 713
 714 wxString wxListBox::GetString( int n ) const
 715 {
 716     wxCHECK_MSG( m_list != NULL, _T(""), _T("invalid listbox") );
 717
 718     GList *child = g_list_nth( m_list->children, n );
 719     if (child)
 720     {
 721         GtkBin *bin = GTK_BIN( child->data );
 722         GtkLabel *label = GTK_LABEL( bin->child );
 723
 724         wxString str = wxString(GET_REAL_LABEL(label->label),*wxConvCurrent);
 725
 726         return str;
 727     }
 728
 729     wxFAIL_MSG(_T("wrong listbox index"));
 730
 731     return _T("");
 732 }
 733
 734 wxString wxListBox::GetStringSelection() const
 735 {
 736     wxCHECK_MSG( m_list != NULL, _T(""), _T("invalid listbox") );
 737
 738     GList *selection = m_list->selection;
 739     if (selection)
 740     {
 741         GtkBin *bin = GTK_BIN( selection->data );
 742         GtkLabel *label = GTK_LABEL( bin->child );
 743
 744         wxString str = wxString(GET_REAL_LABEL(label->label),*wxConvCurrent);
 745
 746         return str;
 747     }
 748
 749     wxFAIL_MSG(_T("no listbox selection available"));
 750     return _T("");
 751 }
 752
 753 int wxListBox::Number()
 754 {
 755     wxCHECK_MSG( m_list != NULL, -1, _T("invalid listbox") );
 756
 757     GList *child = m_list->children;
 758     int count = 0;
 759     while (child) { count++; child = child->next; }
 760     return count;
 761 }
 762
 763 bool wxListBox::Selected( int n )
 764 {
 765     wxCHECK_MSG( m_list != NULL, FALSE, _T("invalid listbox") );
 766
 767     GList *target = g_list_nth( m_list->children, n );
 768     if (target)
 769     {
 770         GList *child = m_list->selection;
 771         while (child)
 772         {
 773             if (child->data == target->data) return TRUE;
 774             child = child->next;
 775         }
 776     }
 777     wxFAIL_MSG(_T("wrong listbox index"));
 778     return FALSE;
 779 }
 780
 781 void wxListBox::Set( int WXUNUSED(n), const wxString *WXUNUSED(choices) )
 782 {
 783     wxFAIL_MSG(_T("wxListBox::Set not implemented"));
 784 }
 785
 786 void wxListBox::SetFirstItem( int WXUNUSED(n) )
 787 {
 788     wxFAIL_MSG(_T("wxListBox::SetFirstItem not implemented"));
 789 }
 790
 791 void wxListBox::SetFirstItem( const wxString &WXUNUSED(item) )
 792 {
 793     wxFAIL_MSG(_T("wxListBox::SetFirstItem not implemented"));
 794 }
 795
 796 void wxListBox::SetSelection( int n, bool select )
 797 {
 798     wxCHECK_RET( m_list != NULL, _T("invalid listbox") );
 799
 800     if (select)
 801         gtk_list_select_item( m_list, n );
 802     else
 803         gtk_list_unselect_item( m_list, n );
 804 }
 805
 806 void wxListBox::SetString( int n, const wxString &string )
 807 {
 808     wxCHECK_RET( m_list != NULL, _T("invalid listbox") );
 809
 810     GList *child = g_list_nth( m_list->children, n );
 811     if (child)
 812     {
 813         GtkBin *bin = GTK_BIN( child->data );
 814         GtkLabel *label = GTK_LABEL( bin->child );
 815
 816         wxString str;
 817 #if wxUSE_CHECKLISTBOX
 818         if (m_hasCheckBoxes)
 819             str += CHECKBOX_STRING;
 820 #endif // wxUSE_CHECKLISTBOX
 821         str += string;
 822
 823         gtk_label_set( label, str.mbc_str() );
 824     }
 825     else
 826     {
 827         wxFAIL_MSG(_T("wrong listbox index"));
 828     }
 829 }
 830
 831 void wxListBox::SetStringSelection( const wxString &string, bool select )
 832 {
 833     wxCHECK_RET( m_list != NULL, _T("invalid listbox") );
 834
 835     SetSelection( FindString(string), select );
 836 }
 837
 838 int wxListBox::GetIndex( GtkWidget *item ) const
 839 {
 840     if (item)
 841     {
 842         GList *child = m_list->children;
 843         int count = 0;
 844         while (child)
 845         {
 846             if (GTK_WIDGET(child->data) == item) return count;
 847             count++;
 848             child = child->next;
 849         }
 850     }
 851     return -1;
 852 }
 853
 854 #if wxUSE_TOOLTIPS
 855 void wxListBox::ApplyToolTip( GtkTooltips *tips, const wxChar *tip )
 856 {
 857     GList *child = m_list->children;
 858     while (child)
 859     {
 860         gtk_tooltips_set_tip( tips, GTK_WIDGET( child->data ), wxConvLocal.cWX2MB(tip), (gchar*) NULL );
 861         child = child->next;
 862     }
 863 }
 864 #endif // wxUSE_TOOLTIPS
 865
 866 #if wxUSE_DRAG_AND_DROP
 867 void wxListBox::SetDropTarget( wxDropTarget *dropTarget )
 868 {
 869     wxCHECK_RET( m_list != NULL, _T("invalid listbox") );
 870
 871 #ifndef NEW_GTK_DND_CODE
 872     if (m_dropTarget)
 873     {
 874         GList *child = m_list->children;
 875         while (child)
 876         {
 877             m_dropTarget->UnregisterWidget( GTK_WIDGET( child->data ) );
 878             child = child->next;
 879         }
 880     }
 881 #endif
 882
 883     wxWindow::SetDropTarget( dropTarget );
 884
 885 #ifndef NEW_GTK_DND_CODE
 886     if (m_dropTarget)
 887     {
 888         GList *child = m_list->children;
 889         while (child)
 890         {
 891             m_dropTarget->RegisterWidget( GTK_WIDGET( child->data ) );
 892             child = child->next;
 893         }
 894     }
 895 #endif
 896 }
 897 #endif
 898
 899 GtkWidget *wxListBox::GetConnectWidget()
 900 {
 901     return GTK_WIDGET(m_list);
 902 }
 903
 904 bool wxListBox::IsOwnGtkWindow( GdkWindow *window )
 905 {
 906     if (wxWindow::IsOwnGtkWindow( window )) return TRUE;
 907
 908     GList *child = m_list->children;
 909     while (child)
 910     {
 911         GtkWidget *bin = GTK_WIDGET( child->data );
 912         if (bin->window == window) return TRUE;
 913         child = child->next;
 914     }
 915
 916     return FALSE;
 917 }
 918
 919 void wxListBox::ApplyWidgetStyle()
 920 {
 921     SetWidgetStyle();
 922
 923     if (m_backgroundColour.Ok())
 924     {
 925         GdkWindow *window = GTK_WIDGET(m_list)->window;
 926         if ( window )
 927         {
 928             m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
 929             gdk_window_set_background( window, m_backgroundColour.GetColor() );
 930             gdk_window_clear( window );
 931         }
 932     }
 933
 934     GList *child = m_list->children;
 935     while (child)
 936     {
 937         gtk_widget_set_style( GTK_WIDGET(child->data), m_widgetStyle );
 938
 939         GtkBin *bin = GTK_BIN( child->data );
 940         GtkWidget *label = GTK_WIDGET( bin->child );
 941         gtk_widget_set_style( label, m_widgetStyle );
 942
 943         child = child->next;
 944     }
 945 }
 946
 947 #endif