src/gtk/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 #include <gdk/gdk.h>
  30 #include <gtk/gtk.h>
  31 #include <gdk/gdkkeysyms.h>
  32
  33 //-----------------------------------------------------------------------------
  34 // idle system
  35 //-----------------------------------------------------------------------------
  36
  37 extern void wxapp_install_idle_handler();
  38 extern bool g_isIdle;
  39
  40 //-----------------------------------------------------------------------------
  41 // private functions
  42 //-----------------------------------------------------------------------------
  43
  44 #if wxUSE_CHECKLISTBOX
  45
  46 // checklistboxes have "[±] " prepended to their lables, this macro removes it
  47 // (NB: 4 below is the length of wxCHECKLBOX_STRING above)
  48 //
  49 // the argument to it is a "const char *" pointer
  50 #define GET_REAL_LABEL(label) ((m_hasCheckBoxes)?(label)+4 : (label))
  51
  52 #else // !wxUSE_CHECKLISTBOX
  53
  54 #define GET_REAL_LABEL(label) (label)
  55
  56 #endif // wxUSE_CHECKLISTBOX
  57
  58 //-----------------------------------------------------------------------------
  59 // data
  60 //-----------------------------------------------------------------------------
  61
  62 extern bool           g_blockEventsOnDrag;
  63 extern bool           g_blockEventsOnScroll;
  64 extern wxCursor       g_globalCursor;
  65 extern wxWindowGTK   *g_delayedFocus;
  66
  67 static bool       g_hasDoubleClicked = FALSE;
  68
  69 //-----------------------------------------------------------------------------
  70 // idle callback for SetFirstItem
  71 //-----------------------------------------------------------------------------
  72
  73 struct wxlistbox_idle_struct
  74 {
  75     wxListBox   *m_listbox;
  76     int          m_item;
  77     gint         m_tag;
  78 };
  79
  80 extern "C" gint wxlistbox_idle_callback( gpointer gdata )
  81 {
  82     wxlistbox_idle_struct* data = (wxlistbox_idle_struct*) gdata;
  83     gdk_threads_enter();
  84
  85     gtk_idle_remove( data->m_tag );
  86
  87     // check that the items haven't been deleted from the listbox since we had
  88     // installed this callback
  89     wxListBox *lbox = data->m_listbox;
  90     if ( data->m_item < lbox->GetCount() )
  91     {
  92         lbox->SetFirstItem( data->m_item );
  93     }
  94
  95     delete data;
  96
  97     gdk_threads_leave();
  98
  99     return TRUE;
 100 }
 101
 102 //-----------------------------------------------------------------------------
 103 // "button_release_event"
 104 //-----------------------------------------------------------------------------
 105
 106 /* we would normally emit a wxEVT_COMMAND_LISTBOX_DOUBLECLICKED event once
 107    a GDK_2BUTTON_PRESS occurs, but this has the particular problem of the
 108    listbox keeping the focus until it receives a GDK_BUTTON_RELEASE event.
 109    this can lead to race conditions so that we emit the dclick event
 110    after the GDK_BUTTON_RELEASE event after the GDK_2BUTTON_PRESS event */
 111
 112 static gint
 113 gtk_listbox_button_release_callback( GtkWidget * WXUNUSED(widget),
 114                                      GdkEventButton * WXUNUSED(gdk_event),
 115                                      wxListBox *listbox )
 116 {
 117     if (g_isIdle) wxapp_install_idle_handler();
 118
 119     if (g_blockEventsOnDrag) return FALSE;
 120     if (g_blockEventsOnScroll) return FALSE;
 121
 122     if (!listbox->m_hasVMT) return FALSE;
 123
 124     if (!g_hasDoubleClicked) return FALSE;
 125
 126     wxCommandEvent event( wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, listbox->GetId() );
 127     event.SetEventObject( listbox );
 128
 129     wxArrayInt aSelections;
 130     int n, count = listbox->GetSelections(aSelections);
 131     if ( count > 0 )
 132     {
 133         n = aSelections[0];
 134         if ( listbox->HasClientObjectData() )
 135             event.SetClientObject( listbox->GetClientObject(n) );
 136         else if ( listbox->HasClientUntypedData() )
 137             event.SetClientData( listbox->GetClientData(n) );
 138         event.SetString( listbox->GetString(n) );
 139     }
 140     else
 141     {
 142         n = -1;
 143     }
 144
 145     event.m_commandInt = n;
 146
 147     listbox->GetEventHandler()->ProcessEvent( event );
 148
 149     return FALSE;
 150 }
 151
 152 //-----------------------------------------------------------------------------
 153 // "button_press_event"
 154 //-----------------------------------------------------------------------------
 155
 156 static gint
 157 gtk_listbox_button_press_callback( GtkWidget *widget,
 158                                    GdkEventButton *gdk_event,
 159                                    wxListBox *listbox )
 160 {
 161     if (g_isIdle) wxapp_install_idle_handler();
 162
 163     if (g_blockEventsOnDrag) return FALSE;
 164     if (g_blockEventsOnScroll) return FALSE;
 165
 166     if (!listbox->m_hasVMT) return FALSE;
 167
 168     int sel = listbox->GtkGetIndex( widget );
 169
 170 #if wxUSE_CHECKLISTBOX
 171     if ((listbox->m_hasCheckBoxes) && (gdk_event->x < 15) && (gdk_event->type != GDK_2BUTTON_PRESS))
 172     {
 173         wxCheckListBox *clb = (wxCheckListBox *)listbox;
 174
 175         clb->Check( sel, !clb->IsChecked(sel) );
 176
 177         wxCommandEvent event( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, listbox->GetId() );
 178         event.SetEventObject( listbox );
 179         event.SetInt( sel );
 180         listbox->GetEventHandler()->ProcessEvent( event );
 181     }
 182 #endif // wxUSE_CHECKLISTBOX
 183
 184     /* emit wxEVT_COMMAND_LISTBOX_DOUBLECLICKED later */
 185     g_hasDoubleClicked = (gdk_event->type == GDK_2BUTTON_PRESS);
 186
 187     return FALSE;
 188 }
 189
 190 //-----------------------------------------------------------------------------
 191 // "key_press_event"
 192 //-----------------------------------------------------------------------------
 193
 194 static gint
 195 gtk_listbox_key_press_callback( GtkWidget *widget, GdkEventKey *gdk_event, wxListBox *listbox )
 196 {
 197     if (g_isIdle)
 198         wxapp_install_idle_handler();
 199
 200     if (g_blockEventsOnDrag)
 201         return FALSE;
 202
 203     bool ret = FALSE;
 204
 205     if ((gdk_event->keyval == GDK_Tab) || (gdk_event->keyval == GDK_ISO_Left_Tab))
 206     {
 207         wxNavigationKeyEvent new_event;
 208         /* GDK reports GDK_ISO_Left_Tab for SHIFT-TAB */
 209         new_event.SetDirection( (gdk_event->keyval == GDK_Tab) );
 210         /* CTRL-TAB changes the (parent) window, i.e. switch notebook page */
 211         new_event.SetWindowChange( (gdk_event->state & GDK_CONTROL_MASK) );
 212         new_event.SetCurrentFocus( listbox );
 213         ret = listbox->GetEventHandler()->ProcessEvent( new_event );
 214     }
 215
 216     if ((gdk_event->keyval == GDK_Return) && (!ret))
 217     {
 218         // eat return in all modes
 219         ret = TRUE;
 220     }
 221
 222 #if wxUSE_CHECKLISTBOX
 223     if ((gdk_event->keyval == ' ') && (listbox->m_hasCheckBoxes) && (!ret))
 224     {
 225         int sel = listbox->GtkGetIndex( widget );
 226
 227         wxCheckListBox *clb = (wxCheckListBox *)listbox;
 228
 229         clb->Check( sel, !clb->IsChecked(sel) );
 230
 231         wxCommandEvent new_event( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, listbox->GetId() );
 232         new_event.SetEventObject( listbox );
 233         new_event.SetInt( sel );
 234         ret = listbox->GetEventHandler()->ProcessEvent( new_event );
 235     }
 236 #endif // wxUSE_CHECKLISTBOX
 237
 238     if (ret)
 239     {
 240         gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "key_press_event" );
 241         return TRUE;
 242     }
 243
 244     return FALSE;
 245 }
 246
 247 //-----------------------------------------------------------------------------
 248 // "select" and "deselect"
 249 //-----------------------------------------------------------------------------
 250
 251 static void gtk_listitem_select_cb( GtkWidget *widget, wxListBox *listbox, bool is_selection );
 252
 253 static void gtk_listitem_select_callback( GtkWidget *widget, wxListBox *listbox )
 254 {
 255     gtk_listitem_select_cb( widget, listbox, TRUE );
 256 }
 257
 258 static void gtk_listitem_deselect_callback( GtkWidget *widget, wxListBox *listbox )
 259 {
 260     gtk_listitem_select_cb( widget, listbox, FALSE );
 261 }
 262
 263 static void gtk_listitem_select_cb( GtkWidget *widget, wxListBox *listbox, bool is_selection )
 264 {
 265     if (g_isIdle) wxapp_install_idle_handler();
 266
 267     if (!listbox->m_hasVMT) return;
 268     if (g_blockEventsOnDrag) return;
 269
 270     if (listbox->m_blockEvent) return;
 271
 272     wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, listbox->GetId() );
 273     event.SetEventObject( listbox );
 274
 275 //    MSW doesn't do that either
 276 //    event.SetExtraLong( (long) is_selection );
 277
 278
 279     if ((listbox->GetWindowStyleFlag() & wxLB_SINGLE) != 0)
 280     {
 281         int sel = listbox->GtkGetIndex( widget );
 282
 283         if (listbox->m_prevSelection != sel)
 284             gtk_list_unselect_item( listbox->m_list, listbox->m_prevSelection );
 285
 286         listbox->m_prevSelection = sel;
 287     }
 288
 289     wxArrayInt aSelections;
 290     int n, count = listbox->GetSelections(aSelections);
 291     if ( count > 0 )
 292     {
 293         n = aSelections[0];
 294         if ( listbox->HasClientObjectData() )
 295             event.SetClientObject( listbox->GetClientObject(n) );
 296         else if ( listbox->HasClientUntypedData() )
 297             event.SetClientData( listbox->GetClientData(n) );
 298         event.SetString( listbox->GetString(n) );
 299     }
 300     else
 301     {
 302         n = -1;
 303     }
 304
 305     event.m_commandInt = n;
 306
 307 //    No longer required with new code in wxLB_SINGLE
 308 //    listbox->GetEventHandler()->AddPendingEvent( event );
 309     listbox->GetEventHandler()->ProcessEvent( event );
 310 }
 311
 312 //-----------------------------------------------------------------------------
 313 // wxListBox
 314 //-----------------------------------------------------------------------------
 315
 316 IMPLEMENT_DYNAMIC_CLASS(wxListBox,wxControl)
 317
 318 // ----------------------------------------------------------------------------
 319 // construction
 320 // ----------------------------------------------------------------------------
 321
 322 wxListBox::wxListBox()
 323 {
 324     m_list = (GtkList *) NULL;
 325 #if wxUSE_CHECKLISTBOX
 326     m_hasCheckBoxes = FALSE;
 327 #endif // wxUSE_CHECKLISTBOX
 328 }
 329
 330 bool wxListBox::Create( wxWindow *parent, wxWindowID id,
 331                         const wxPoint &pos, const wxSize &size,
 332                         int n, const wxString choices[],
 333                         long style, const wxValidator& validator,
 334                         const wxString &name )
 335 {
 336     m_needParent = TRUE;
 337     m_acceptsFocus = TRUE;
 338     m_isListBox = TRUE;
 339     m_prevSelection = 0;  // or -1 ??
 340     m_blockEvent = FALSE;
 341
 342     if (!PreCreation( parent, pos, size ) ||
 343         !CreateBase( parent, id, pos, size, style, validator, name ))
 344     {
 345         wxFAIL_MSG( wxT("wxListBox creation failed") );
 346         return FALSE;
 347     }
 348
 349     m_widget = gtk_scrolled_window_new( (GtkAdjustment*) NULL, (GtkAdjustment*) NULL );
 350     if (style & wxLB_ALWAYS_SB)
 351     {
 352       gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
 353         GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS );
 354     }
 355     else
 356     {
 357       gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
 358         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 359     }
 360
 361     m_list = GTK_LIST( gtk_list_new() );
 362
 363     GtkSelectionMode mode;
 364     if (style & wxLB_MULTIPLE)
 365     {
 366         mode = GTK_SELECTION_MULTIPLE;
 367     }
 368     else if (style & wxLB_EXTENDED)
 369     {
 370         mode = GTK_SELECTION_EXTENDED;
 371     }
 372     else
 373     {
 374         // if style was 0 set single mode
 375         m_windowStyle |= wxLB_SINGLE;
 376         mode = GTK_SELECTION_MULTIPLE;
 377     }
 378
 379     gtk_list_set_selection_mode( GTK_LIST(m_list), mode );
 380
 381     gtk_scrolled_window_add_with_viewport( GTK_SCROLLED_WINDOW(m_widget), GTK_WIDGET(m_list) );
 382
 383     /* make list scroll when moving the focus down using cursor keys */
 384     gtk_container_set_focus_vadjustment(
 385         GTK_CONTAINER(m_list),
 386         gtk_scrolled_window_get_vadjustment(
 387             GTK_SCROLLED_WINDOW(m_widget)));
 388
 389     gtk_widget_show( GTK_WIDGET(m_list) );
 390
 391     if ( style & wxLB_SORT )
 392     {
 393         // this will change DoAppend() behaviour
 394         m_strings = new wxSortedArrayString;
 395     }
 396     else
 397     {
 398         m_strings = (wxSortedArrayString *)NULL;
 399     }
 400
 401     for (int i = 0; i < n; i++)
 402     {
 403         // add one by one
 404         DoAppend(choices[i]);
 405     }
 406
 407     // call it after appending the strings to the listbox, otherwise it doesn't
 408     // work correctly
 409     SetBestSize( size );
 410
 411     m_parent->DoAddChild( this );
 412
 413     PostCreation();
 414
 415     SetBackgroundColour( wxSystemSettings::GetColour( wxSYS_COLOUR_LISTBOX ) );
 416     SetForegroundColour( parent->GetForegroundColour() );
 417     SetFont( parent->GetFont() );
 418
 419     Show( TRUE );
 420
 421     return TRUE;
 422 }
 423
 424 wxListBox::~wxListBox()
 425 {
 426     m_hasVMT = FALSE;
 427
 428     Clear();
 429
 430     if (m_strings)
 431       delete m_strings;
 432 }
 433
 434 void wxListBox::DoInsertItems(const wxArrayString& items, int pos)
 435 {
 436     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 437
 438     // VZ: notice that InsertItems knows nothing about sorting, so calling it
 439     //     from outside (and not from our own Append) is likely to break
 440     //     everything
 441
 442     // code elsewhere supposes we have as many items in m_clientList as items
 443     // in the listbox
 444     wxASSERT_MSG( m_clientList.GetCount() == (size_t)GetCount(),
 445                   wxT("bug in client data management") );
 446
 447     GList *children = m_list->children;
 448     int length = g_list_length(children);
 449
 450     wxCHECK_RET( pos <= length, wxT("invalid index in wxListBox::InsertItems") );
 451
 452     size_t nItems = items.GetCount();
 453     int index;
 454
 455     if (m_strings)
 456     {
 457         for (size_t n = 0; n < nItems; n++)
 458         {
 459             index = m_strings->Add( items[n] );
 460
 461             if (index != GetCount())
 462             {
 463                 GtkAddItem( items[n], index );
 464                 wxNode *node = m_clientList.Nth( index );
 465                 m_clientList.Insert( node, (wxObject*) NULL );
 466             }
 467             else
 468             {
 469                 GtkAddItem( items[n] );
 470                 m_clientList.Append( (wxObject*) NULL );
 471             }
 472         }
 473     }
 474     else
 475     {
 476         if (pos == length)
 477         {
 478             for ( size_t n = 0; n < nItems; n++ )
 479             {
 480                 GtkAddItem( items[n] );
 481
 482                 m_clientList.Append((wxObject *)NULL);
 483             }
 484         }
 485         else
 486         {
 487             wxNode *node = m_clientList.Nth( pos );
 488             for ( size_t n = 0; n < nItems; n++ )
 489             {
 490                 GtkAddItem( items[n], pos+n );
 491
 492                 m_clientList.Insert( node, (wxObject *)NULL );
 493             }
 494         }
 495     }
 496
 497     wxASSERT_MSG( m_clientList.GetCount() == (size_t)GetCount(),
 498                       wxT("bug in client data management") );
 499 }
 500
 501 int wxListBox::DoAppend( const wxString& item )
 502 {
 503     if (m_strings)
 504     {
 505         // need to determine the index
 506         int index = m_strings->Add( item );
 507
 508         // only if not at the end anyway
 509         if (index != GetCount())
 510         {
 511            GtkAddItem( item, index );
 512
 513            wxNode *node = m_clientList.Nth( index );
 514            m_clientList.Insert( node, (wxObject *)NULL );
 515
 516            return index;
 517         }
 518     }
 519
 520     GtkAddItem(item);
 521
 522     m_clientList.Append((wxObject *)NULL);
 523
 524     return GetCount() - 1;
 525 }
 526
 527 void wxListBox::GtkAddItem( const wxString &item, int pos )
 528 {
 529     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 530
 531     GtkWidget *list_item;
 532
 533     wxString label(item);
 534 #if wxUSE_CHECKLISTBOX
 535     if (m_hasCheckBoxes)
 536     {
 537         label.Prepend(wxCHECKLBOX_STRING);
 538     }
 539 #endif // wxUSE_CHECKLISTBOX
 540
 541     list_item = gtk_list_item_new_with_label( label.mbc_str() );
 542
 543     GList *gitem_list = g_list_alloc ();
 544     gitem_list->data = list_item;
 545
 546     if (pos == -1)
 547         gtk_list_append_items( GTK_LIST (m_list), gitem_list );
 548     else
 549         gtk_list_insert_items( GTK_LIST (m_list), gitem_list, pos );
 550
 551     gtk_signal_connect( GTK_OBJECT(list_item), "select",
 552       GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 553
 554     if (HasFlag(wxLB_MULTIPLE) || HasFlag(wxLB_EXTENDED))
 555         gtk_signal_connect( GTK_OBJECT(list_item), "deselect",
 556           GTK_SIGNAL_FUNC(gtk_listitem_deselect_callback), (gpointer)this );
 557
 558     gtk_signal_connect( GTK_OBJECT(list_item),
 559                         "button_press_event",
 560                         (GtkSignalFunc)gtk_listbox_button_press_callback,
 561                         (gpointer) this );
 562
 563     gtk_signal_connect_after( GTK_OBJECT(list_item),
 564                         "button_release_event",
 565                         (GtkSignalFunc)gtk_listbox_button_release_callback,
 566                         (gpointer) this );
 567
 568     gtk_signal_connect( GTK_OBJECT(list_item),
 569                            "key_press_event",
 570                            (GtkSignalFunc)gtk_listbox_key_press_callback,
 571                            (gpointer)this );
 572
 573     ConnectWidget( list_item );
 574
 575     gtk_widget_show( list_item );
 576
 577     if (GTK_WIDGET_REALIZED(m_widget))
 578     {
 579         gtk_widget_realize( list_item );
 580         gtk_widget_realize( GTK_BIN(list_item)->child );
 581
 582         // Apply current widget style to the new list_item
 583         if (m_widgetStyle)
 584         {
 585             gtk_widget_set_style( GTK_WIDGET( list_item ), m_widgetStyle );
 586             GtkBin *bin = GTK_BIN( list_item );
 587             GtkWidget *label = GTK_WIDGET( bin->child );
 588             gtk_widget_set_style( label, m_widgetStyle );
 589         }
 590
 591 #if wxUSE_TOOLTIPS
 592         if (m_tooltip) m_tooltip->Apply( this );
 593 #endif
 594     }
 595 }
 596
 597 void wxListBox::DoSetItems( const wxArrayString& items,
 598                             void **clientData)
 599 {
 600     Clear();
 601
 602     DoInsertItems(items, 0);
 603
 604     if ( clientData )
 605     {
 606         size_t count = items.GetCount();
 607         for ( size_t n = 0; n < count; n++ )
 608         {
 609             SetClientData(n, clientData[n]);
 610         }
 611     }
 612 }
 613
 614 // ----------------------------------------------------------------------------
 615 // client data
 616 // ----------------------------------------------------------------------------
 617
 618 void wxListBox::DoSetItemClientData( int n, void* clientData )
 619 {
 620     wxCHECK_RET( m_widget != NULL, wxT("invalid listbox control") );
 621
 622     wxNode *node = m_clientList.Nth( n );
 623     wxCHECK_RET( node, wxT("invalid index in wxListBox::DoSetItemClientData") );
 624
 625     node->SetData( (wxObject*) clientData );
 626 }
 627
 628 void* wxListBox::DoGetItemClientData( int n ) const
 629 {
 630     wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid listbox control") );
 631
 632     wxNode *node = m_clientList.Nth( n );
 633     wxCHECK_MSG( node, NULL, wxT("invalid index in wxListBox::DoGetItemClientData") );
 634
 635     return node->Data();
 636 }
 637
 638 void wxListBox::DoSetItemClientObject( int n, wxClientData* clientData )
 639 {
 640     wxCHECK_RET( m_widget != NULL, wxT("invalid listbox control") );
 641
 642     wxNode *node = m_clientList.Nth( n );
 643     wxCHECK_RET( node, wxT("invalid index in wxListBox::DoSetItemClientObject") );
 644
 645     wxClientData *cd = (wxClientData*) node->Data();
 646     delete cd;
 647
 648     node->SetData( (wxObject*) clientData );
 649 }
 650
 651 wxClientData* wxListBox::DoGetItemClientObject( int n ) const
 652 {
 653     wxCHECK_MSG( m_widget != NULL, (wxClientData*) NULL, wxT("invalid listbox control") );
 654
 655     wxNode *node = m_clientList.Nth( n );
 656     wxCHECK_MSG( node, (wxClientData *)NULL,
 657                  wxT("invalid index in wxListBox::DoGetItemClientObject") );
 658
 659     return (wxClientData*) node->Data();
 660 }
 661
 662 void wxListBox::Clear()
 663 {
 664     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 665
 666     gtk_list_clear_items( m_list, 0, GetCount() );
 667
 668     if ( GTK_LIST(m_list)->last_focus_child != NULL  )
 669     {
 670         // This should be NULL, I think.
 671         GTK_LIST(m_list)->last_focus_child = NULL;
 672     }
 673
 674     if ( HasClientObjectData() )
 675     {
 676         // destroy the data (due to Robert's idea of using wxList<wxObject>
 677         // and not wxList<wxClientData> we can't just say
 678         // m_clientList.DeleteContents(TRUE) - this would crash!
 679         wxNode *node = m_clientList.First();
 680         while ( node )
 681         {
 682             delete (wxClientData *)node->Data();
 683             node = node->Next();
 684         }
 685     }
 686     m_clientList.Clear();
 687
 688     if ( m_strings )
 689         m_strings->Clear();
 690 }
 691
 692 void wxListBox::Delete( int n )
 693 {
 694     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 695
 696     GList *child = g_list_nth( m_list->children, n );
 697
 698     wxCHECK_RET( child, wxT("wrong listbox index") );
 699
 700     GList *list = g_list_append( (GList*) NULL, child->data );
 701     gtk_list_remove_items( m_list, list );
 702     g_list_free( list );
 703
 704     wxNode *node = m_clientList.Nth( n );
 705     if ( node )
 706     {
 707         if ( m_clientDataItemsType == wxClientData_Object )
 708         {
 709             wxClientData *cd = (wxClientData*)node->Data();
 710             delete cd;
 711         }
 712
 713         m_clientList.DeleteNode( node );
 714     }
 715
 716     if ( m_strings )
 717         m_strings->Remove(n);
 718 }
 719
 720 // ----------------------------------------------------------------------------
 721 // string list access
 722 // ----------------------------------------------------------------------------
 723
 724 void wxListBox::SetString( int n, const wxString &string )
 725 {
 726     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 727
 728     GList *child = g_list_nth( m_list->children, n );
 729     if (child)
 730     {
 731         GtkBin *bin = GTK_BIN( child->data );
 732         GtkLabel *label = GTK_LABEL( bin->child );
 733
 734         wxString str;
 735 #if wxUSE_CHECKLISTBOX
 736         if (m_hasCheckBoxes)
 737             str += wxCHECKLBOX_STRING;
 738 #endif // wxUSE_CHECKLISTBOX
 739         str += string;
 740
 741         gtk_label_set( label, str.mbc_str() );
 742     }
 743     else
 744     {
 745         wxFAIL_MSG(wxT("wrong listbox index"));
 746     }
 747 }
 748
 749 wxString wxListBox::GetString( int n ) const
 750 {
 751     wxCHECK_MSG( m_list != NULL, wxT(""), wxT("invalid listbox") );
 752
 753     GList *child = g_list_nth( m_list->children, n );
 754     if (child)
 755     {
 756         GtkBin *bin = GTK_BIN( child->data );
 757         GtkLabel *label = GTK_LABEL( bin->child );
 758
 759         wxString str = wxString(GET_REAL_LABEL(label->label),*wxConvCurrent);
 760
 761         return str;
 762     }
 763
 764     wxFAIL_MSG(wxT("wrong listbox index"));
 765
 766     return wxT("");
 767 }
 768
 769 int wxListBox::GetCount() const
 770 {
 771     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 772
 773     GList *children = m_list->children;
 774     return g_list_length(children);
 775 }
 776
 777 int wxListBox::FindString( const wxString &item ) const
 778 {
 779     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 780
 781     GList *child = m_list->children;
 782     int count = 0;
 783     while (child)
 784     {
 785         GtkBin *bin = GTK_BIN( child->data );
 786         GtkLabel *label = GTK_LABEL( bin->child );
 787
 788         wxString str = wxString(GET_REAL_LABEL(label->label),*wxConvCurrent);
 789
 790         if (str == item)
 791             return count;
 792
 793         count++;
 794         child = child->next;
 795     }
 796
 797     // it's not an error if the string is not found -> no wxCHECK
 798
 799     return wxNOT_FOUND;
 800 }
 801
 802 // ----------------------------------------------------------------------------
 803 // selection
 804 // ----------------------------------------------------------------------------
 805
 806 int wxListBox::GetSelection() const
 807 {
 808     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 809
 810     GList *child = m_list->children;
 811     int count = 0;
 812     while (child)
 813     {
 814         if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED) return count;
 815         count++;
 816         child = child->next;
 817     }
 818     return -1;
 819 }
 820
 821 int wxListBox::GetSelections( wxArrayInt& aSelections ) const
 822 {
 823     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 824
 825     // get the number of selected items first
 826     GList *child = m_list->children;
 827     int count = 0;
 828     for (child = m_list->children; child != NULL; child = child->next)
 829     {
 830         if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED)
 831             count++;
 832     }
 833
 834     aSelections.Empty();
 835
 836     if (count > 0)
 837     {
 838         // now fill the list
 839         aSelections.Alloc(count); // optimization attempt
 840         int i = 0;
 841         for (child = m_list->children; child != NULL; child = child->next, i++)
 842         {
 843             if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED)
 844                  aSelections.Add(i);
 845         }
 846     }
 847
 848     return count;
 849 }
 850
 851 bool wxListBox::IsSelected( int n ) const
 852 {
 853     wxCHECK_MSG( m_list != NULL, FALSE, wxT("invalid listbox") );
 854
 855     GList *target = g_list_nth( m_list->children, n );
 856
 857     wxCHECK_MSG( target, FALSE, wxT("invalid listbox index") );
 858
 859     return (GTK_WIDGET(target->data)->state == GTK_STATE_SELECTED) ;
 860 }
 861
 862 void wxListBox::SetSelection( int n, bool select )
 863 {
 864     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 865
 866     m_blockEvent = TRUE;
 867
 868     if (select)
 869     {
 870         if ((m_windowStyle & wxLB_SINGLE) != 0)
 871             gtk_list_unselect_item( m_list, m_prevSelection );
 872         gtk_list_select_item( m_list, n );
 873         m_prevSelection = n;
 874     }
 875     else
 876         gtk_list_unselect_item( m_list, n );
 877
 878     m_blockEvent = FALSE;
 879 }
 880
 881 void wxListBox::DoSetFirstItem( int n )
 882 {
 883     wxCHECK_RET( m_list, wxT("invalid listbox") );
 884
 885     if (gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (m_list))
 886         return;
 887
 888     // terribly efficient
 889     const gchar *vadjustment_key = "gtk-vadjustment";
 890     guint vadjustment_key_id = g_quark_from_static_string (vadjustment_key);
 891
 892     GtkAdjustment *adjustment =
 893        (GtkAdjustment*) gtk_object_get_data_by_id (GTK_OBJECT (m_list), vadjustment_key_id);
 894     wxCHECK_RET( adjustment, wxT("invalid listbox code") );
 895
 896     GList *target = g_list_nth( m_list->children, n );
 897     wxCHECK_RET( target, wxT("invalid listbox index") );
 898
 899     GtkWidget *item = GTK_WIDGET(target->data);
 900     wxCHECK_RET( item, wxT("invalid listbox code") );
 901
 902     if (item->allocation.y == -1)
 903     {
 904         wxlistbox_idle_struct* data = new wxlistbox_idle_struct;
 905         data->m_listbox = this;
 906         data->m_item = n;
 907         data->m_tag = gtk_idle_add_priority( 800, wxlistbox_idle_callback, (gpointer) data );
 908
 909         return;
 910     }
 911
 912     float y = item->allocation.y;
 913     if (y > adjustment->upper - adjustment->page_size)
 914         y = adjustment->upper - adjustment->page_size;
 915         gtk_adjustment_set_value( adjustment, y );
 916 }
 917
 918 // ----------------------------------------------------------------------------
 919 // helpers
 920 // ----------------------------------------------------------------------------
 921
 922 int wxListBox::GtkGetIndex( GtkWidget *item ) const
 923 {
 924     if (item)
 925     {
 926         GList *child = m_list->children;
 927         int count = 0;
 928         while (child)
 929         {
 930             if (GTK_WIDGET(child->data) == item) return count;
 931             count++;
 932             child = child->next;
 933         }
 934     }
 935     return -1;
 936 }
 937
 938 #if wxUSE_TOOLTIPS
 939 void wxListBox::ApplyToolTip( GtkTooltips *tips, const wxChar *tip )
 940 {
 941     GList *child = m_list->children;
 942     while (child)
 943     {
 944         gtk_tooltips_set_tip( tips, GTK_WIDGET( child->data ), wxConvCurrent->cWX2MB(tip), (gchar*) NULL );
 945         child = child->next;
 946     }
 947 }
 948 #endif // wxUSE_TOOLTIPS
 949
 950 GtkWidget *wxListBox::GetConnectWidget()
 951 {
 952     return GTK_WIDGET(m_list);
 953 }
 954
 955 bool wxListBox::IsOwnGtkWindow( GdkWindow *window )
 956 {
 957     if (GTK_WIDGET(m_list)->window == window) return TRUE;
 958
 959     GList *child = m_list->children;
 960     while (child)
 961     {
 962         GtkWidget *bin = GTK_WIDGET( child->data );
 963         if (bin->window == window) return TRUE;
 964         child = child->next;
 965     }
 966
 967     return FALSE;
 968 }
 969
 970 void wxListBox::ApplyWidgetStyle()
 971 {
 972     SetWidgetStyle();
 973
 974     if (m_backgroundColour.Ok())
 975     {
 976         GdkWindow *window = GTK_WIDGET(m_list)->window;
 977         if ( window )
 978         {
 979             m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
 980             gdk_window_set_background( window, m_backgroundColour.GetColor() );
 981             gdk_window_clear( window );
 982         }
 983     }
 984
 985     GList *child = m_list->children;
 986     while (child)
 987     {
 988         gtk_widget_set_style( GTK_WIDGET(child->data), m_widgetStyle );
 989
 990         GtkBin *bin = GTK_BIN( child->data );
 991         GtkWidget *label = GTK_WIDGET( bin->child );
 992         gtk_widget_set_style( label, m_widgetStyle );
 993
 994         child = child->next;
 995     }
 996 }
 997
 998 void wxListBox::OnInternalIdle()
 999 {
1000     wxCursor cursor = m_cursor;
1001     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1002
1003     if (GTK_WIDGET(m_list)->window && cursor.Ok())
1004     {
1005         /* I now set the cursor the anew in every OnInternalIdle call
1006            as setting the cursor in a parent window also effects the
1007            windows above so that checking for the current cursor is
1008            not possible. */
1009
1010         gdk_window_set_cursor( GTK_WIDGET(m_list)->window, cursor.GetCursor() );
1011
1012         GList *child = m_list->children;
1013         while (child)
1014         {
1015             GtkBin *bin = GTK_BIN( child->data );
1016             GtkWidget *label = GTK_WIDGET( bin->child );
1017
1018             if (!label->window)
1019                 break;
1020             else
1021                 gdk_window_set_cursor( label->window, cursor.GetCursor() );
1022
1023             child = child->next;
1024         }
1025     }
1026
1027     if (g_delayedFocus == this)
1028     {
1029         if (GTK_WIDGET_REALIZED(m_widget))
1030         {
1031             gtk_widget_grab_focus( m_widget );
1032             g_delayedFocus = NULL;
1033         }
1034     }
1035
1036     UpdateWindowUI();
1037 }
1038
1039 wxSize wxListBox::DoGetBestSize() const
1040 {
1041     int lbWidth = 100;  // some defaults
1042     int lbHeight = 110;
1043     int wLine;
1044
1045     // Find the widest line
1046     for(int i = 0; i < GetCount(); i++) {
1047         wxString str(GetString(i));
1048         GetTextExtent(str, &wLine, NULL);
1049         lbWidth = wxMax(lbWidth, wLine);
1050     }
1051
1052     // Add room for the scrollbar
1053     lbWidth += wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
1054
1055     // And just a bit more
1056     int cx, cy;
1057     GetTextExtent("X", &cx, &cy);
1058     lbWidth += 3 * cx;
1059
1060     // don't make the listbox too tall (limit height to around 10 items) but don't
1061     // make it too small neither
1062     lbHeight = (cy+4) * wxMin(wxMax(GetCount(), 3), 10);
1063
1064     return wxSize(lbWidth, lbHeight);
1065 }
1066
1067 #endif