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 #include "wx/gtk/private.h"
  25
  26 #if wxUSE_TOOLTIPS
  27 #include "wx/tooltip.h"
  28 #endif
  29
  30 #include <gdk/gdk.h>
  31 #include <gtk/gtk.h>
  32 #include <gdk/gdkkeysyms.h>
  33
  34 //-----------------------------------------------------------------------------
  35 // idle system
  36 //-----------------------------------------------------------------------------
  37
  38 extern void wxapp_install_idle_handler();
  39 extern bool g_isIdle;
  40
  41 //-----------------------------------------------------------------------------
  42 // private functions
  43 //-----------------------------------------------------------------------------
  44
  45 #if wxUSE_CHECKLISTBOX
  46
  47 // checklistboxes have "[±] " prepended to their lables, this macro removes it
  48 // (NB: 4 below is the length of wxCHECKLBOX_STRING above)
  49 //
  50 // the argument to it is a "const char *" pointer
  51 #define GET_REAL_LABEL(label) ((m_hasCheckBoxes)?(label)+4 : (label))
  52
  53 #else // !wxUSE_CHECKLISTBOX
  54
  55 #define GET_REAL_LABEL(label) (label)
  56
  57 #endif // wxUSE_CHECKLISTBOX
  58
  59 //-----------------------------------------------------------------------------
  60 // data
  61 //-----------------------------------------------------------------------------
  62
  63 extern bool           g_blockEventsOnDrag;
  64 extern bool           g_blockEventsOnScroll;
  65 extern wxCursor       g_globalCursor;
  66 extern wxWindowGTK   *g_delayedFocus;
  67
  68 static bool       g_hasDoubleClicked = FALSE;
  69
  70 //-----------------------------------------------------------------------------
  71 // idle callback for SetFirstItem
  72 //-----------------------------------------------------------------------------
  73
  74 struct wxlistbox_idle_struct
  75 {
  76     wxListBox   *m_listbox;
  77     int          m_item;
  78     gint         m_tag;
  79 };
  80
  81 extern "C" gint wxlistbox_idle_callback( gpointer gdata )
  82 {
  83     wxlistbox_idle_struct* data = (wxlistbox_idle_struct*) gdata;
  84     gdk_threads_enter();
  85
  86     gtk_idle_remove( data->m_tag );
  87
  88     // check that the items haven't been deleted from the listbox since we had
  89     // installed this callback
  90     wxListBox *lbox = data->m_listbox;
  91     if ( data->m_item < lbox->GetCount() )
  92     {
  93         lbox->SetFirstItem( data->m_item );
  94     }
  95
  96     delete data;
  97
  98     gdk_threads_leave();
  99
 100     return TRUE;
 101 }
 102
 103 //-----------------------------------------------------------------------------
 104 // "button_release_event"
 105 //-----------------------------------------------------------------------------
 106
 107 /* we would normally emit a wxEVT_COMMAND_LISTBOX_DOUBLECLICKED event once
 108    a GDK_2BUTTON_PRESS occurs, but this has the particular problem of the
 109    listbox keeping the focus until it receives a GDK_BUTTON_RELEASE event.
 110    this can lead to race conditions so that we emit the dclick event
 111    after the GDK_BUTTON_RELEASE event after the GDK_2BUTTON_PRESS event */
 112
 113 static gint
 114 gtk_listbox_button_release_callback( GtkWidget * WXUNUSED(widget),
 115                                      GdkEventButton * WXUNUSED(gdk_event),
 116                                      wxListBox *listbox )
 117 {
 118     if (g_isIdle) wxapp_install_idle_handler();
 119
 120     if (g_blockEventsOnDrag) return FALSE;
 121     if (g_blockEventsOnScroll) return FALSE;
 122
 123     if (!listbox->m_hasVMT) return FALSE;
 124
 125     if (!g_hasDoubleClicked) return FALSE;
 126
 127     wxCommandEvent event( wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, listbox->GetId() );
 128     event.SetEventObject( listbox );
 129
 130     wxArrayInt aSelections;
 131     int n, count = listbox->GetSelections(aSelections);
 132     if ( count > 0 )
 133     {
 134         n = aSelections[0];
 135         if ( listbox->HasClientObjectData() )
 136             event.SetClientObject( listbox->GetClientObject(n) );
 137         else if ( listbox->HasClientUntypedData() )
 138             event.SetClientData( listbox->GetClientData(n) );
 139         event.SetString( listbox->GetString(n) );
 140     }
 141     else
 142     {
 143         n = -1;
 144     }
 145
 146     event.m_commandInt = n;
 147
 148     listbox->GetEventHandler()->ProcessEvent( event );
 149
 150     return FALSE;
 151 }
 152
 153 //-----------------------------------------------------------------------------
 154 // "button_press_event"
 155 //-----------------------------------------------------------------------------
 156
 157 static gint
 158 gtk_listbox_button_press_callback( GtkWidget *widget,
 159                                    GdkEventButton *gdk_event,
 160                                    wxListBox *listbox )
 161 {
 162     if (g_isIdle) wxapp_install_idle_handler();
 163
 164     if (g_blockEventsOnDrag) return FALSE;
 165     if (g_blockEventsOnScroll) return FALSE;
 166
 167     if (!listbox->m_hasVMT) return FALSE;
 168
 169     int sel = listbox->GtkGetIndex( widget );
 170
 171 #if wxUSE_CHECKLISTBOX
 172     if ((listbox->m_hasCheckBoxes) && (gdk_event->x < 15) && (gdk_event->type != GDK_2BUTTON_PRESS))
 173     {
 174         wxCheckListBox *clb = (wxCheckListBox *)listbox;
 175
 176         clb->Check( sel, !clb->IsChecked(sel) );
 177
 178         wxCommandEvent event( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, listbox->GetId() );
 179         event.SetEventObject( listbox );
 180         event.SetInt( sel );
 181         listbox->GetEventHandler()->ProcessEvent( event );
 182     }
 183 #endif // wxUSE_CHECKLISTBOX
 184
 185     /* emit wxEVT_COMMAND_LISTBOX_DOUBLECLICKED later */
 186     g_hasDoubleClicked = (gdk_event->type == GDK_2BUTTON_PRESS);
 187
 188     return FALSE;
 189 }
 190
 191 //-----------------------------------------------------------------------------
 192 // "key_press_event"
 193 //-----------------------------------------------------------------------------
 194
 195 static gint
 196 gtk_listbox_key_press_callback( GtkWidget *widget, GdkEventKey *gdk_event, wxListBox *listbox )
 197 {
 198     if (g_isIdle)
 199         wxapp_install_idle_handler();
 200
 201     if (g_blockEventsOnDrag)
 202         return FALSE;
 203
 204     bool ret = FALSE;
 205
 206     if ((gdk_event->keyval == GDK_Tab) || (gdk_event->keyval == GDK_ISO_Left_Tab))
 207     {
 208         wxNavigationKeyEvent new_event;
 209         /* GDK reports GDK_ISO_Left_Tab for SHIFT-TAB */
 210         new_event.SetDirection( (gdk_event->keyval == GDK_Tab) );
 211         /* CTRL-TAB changes the (parent) window, i.e. switch notebook page */
 212         new_event.SetWindowChange( (gdk_event->state & GDK_CONTROL_MASK) );
 213         new_event.SetCurrentFocus( listbox );
 214         ret = listbox->GetEventHandler()->ProcessEvent( new_event );
 215     }
 216
 217     if ((gdk_event->keyval == GDK_Return) && (!ret))
 218     {
 219         // eat return in all modes
 220         ret = TRUE;
 221     }
 222
 223 #if wxUSE_CHECKLISTBOX
 224     if ((gdk_event->keyval == ' ') && (listbox->m_hasCheckBoxes) && (!ret))
 225     {
 226         int sel = listbox->GtkGetIndex( widget );
 227
 228         wxCheckListBox *clb = (wxCheckListBox *)listbox;
 229
 230         clb->Check( sel, !clb->IsChecked(sel) );
 231
 232         wxCommandEvent new_event( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, listbox->GetId() );
 233         new_event.SetEventObject( listbox );
 234         new_event.SetInt( sel );
 235         ret = listbox->GetEventHandler()->ProcessEvent( new_event );
 236     }
 237 #endif // wxUSE_CHECKLISTBOX
 238
 239     if (ret)
 240     {
 241         gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "key_press_event" );
 242         return TRUE;
 243     }
 244
 245     return FALSE;
 246 }
 247
 248 //-----------------------------------------------------------------------------
 249 // "select" and "deselect"
 250 //-----------------------------------------------------------------------------
 251
 252 static void gtk_listitem_select_cb( GtkWidget *widget, wxListBox *listbox, bool is_selection );
 253
 254 static void gtk_listitem_select_callback( GtkWidget *widget, wxListBox *listbox )
 255 {
 256     gtk_listitem_select_cb( widget, listbox, TRUE );
 257 }
 258
 259 static void gtk_listitem_deselect_callback( GtkWidget *widget, wxListBox *listbox )
 260 {
 261     gtk_listitem_select_cb( widget, listbox, FALSE );
 262 }
 263
 264 static void gtk_listitem_select_cb( GtkWidget *widget, wxListBox *listbox, bool is_selection )
 265 {
 266     if (g_isIdle) wxapp_install_idle_handler();
 267
 268     if (!listbox->m_hasVMT) return;
 269     if (g_blockEventsOnDrag) return;
 270
 271     if (listbox->m_blockEvent) return;
 272
 273     wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, listbox->GetId() );
 274     event.SetEventObject( listbox );
 275
 276 //    MSW doesn't do that either
 277 //    event.SetExtraLong( (long) is_selection );
 278
 279
 280     if ((listbox->GetWindowStyleFlag() & wxLB_SINGLE) != 0)
 281     {
 282         int sel = listbox->GtkGetIndex( widget );
 283
 284         if (listbox->m_prevSelection != sel)
 285             gtk_list_unselect_item( listbox->m_list, listbox->m_prevSelection );
 286
 287         listbox->m_prevSelection = sel;
 288     }
 289
 290     wxArrayInt aSelections;
 291     int n, count = listbox->GetSelections(aSelections);
 292     if ( count > 0 )
 293     {
 294         n = aSelections[0];
 295         if ( listbox->HasClientObjectData() )
 296             event.SetClientObject( listbox->GetClientObject(n) );
 297         else if ( listbox->HasClientUntypedData() )
 298             event.SetClientData( listbox->GetClientData(n) );
 299         event.SetString( listbox->GetString(n) );
 300     }
 301     else
 302     {
 303         n = -1;
 304     }
 305
 306     event.m_commandInt = n;
 307
 308 //    No longer required with new code in wxLB_SINGLE
 309 //    listbox->GetEventHandler()->AddPendingEvent( event );
 310     listbox->GetEventHandler()->ProcessEvent( event );
 311 }
 312
 313 //-----------------------------------------------------------------------------
 314 // wxListBox
 315 //-----------------------------------------------------------------------------
 316
 317 IMPLEMENT_DYNAMIC_CLASS(wxListBox,wxControl)
 318
 319 // ----------------------------------------------------------------------------
 320 // construction
 321 // ----------------------------------------------------------------------------
 322
 323 wxListBox::wxListBox()
 324 {
 325     m_list = (GtkList *) NULL;
 326 #if wxUSE_CHECKLISTBOX
 327     m_hasCheckBoxes = FALSE;
 328 #endif // wxUSE_CHECKLISTBOX
 329 }
 330
 331 bool wxListBox::Create( wxWindow *parent, wxWindowID id,
 332                         const wxPoint &pos, const wxSize &size,
 333                         int n, const wxString choices[],
 334                         long style, const wxValidator& validator,
 335                         const wxString &name )
 336 {
 337     m_needParent = TRUE;
 338     m_acceptsFocus = 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( wxGTK_CONV( label ) );
 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     // wxItemContainer already deletes data for us
 646
 647     node->SetData( (wxObject*) clientData );
 648 }
 649
 650 wxClientData* wxListBox::DoGetItemClientObject( int n ) const
 651 {
 652     wxCHECK_MSG( m_widget != NULL, (wxClientData*) NULL, wxT("invalid listbox control") );
 653
 654     wxNode *node = m_clientList.Nth( n );
 655     wxCHECK_MSG( node, (wxClientData *)NULL,
 656                  wxT("invalid index in wxListBox::DoGetItemClientObject") );
 657
 658     return (wxClientData*) node->Data();
 659 }
 660
 661 void wxListBox::Clear()
 662 {
 663     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 664
 665     gtk_list_clear_items( m_list, 0, GetCount() );
 666
 667     if ( GTK_LIST(m_list)->last_focus_child != NULL  )
 668     {
 669         // This should be NULL, I think.
 670         GTK_LIST(m_list)->last_focus_child = NULL;
 671     }
 672
 673     if ( HasClientObjectData() )
 674     {
 675         // destroy the data (due to Robert's idea of using wxList<wxObject>
 676         // and not wxList<wxClientData> we can't just say
 677         // m_clientList.DeleteContents(TRUE) - this would crash!
 678         wxNode *node = m_clientList.First();
 679         while ( node )
 680         {
 681             delete (wxClientData *)node->Data();
 682             node = node->Next();
 683         }
 684     }
 685     m_clientList.Clear();
 686
 687     if ( m_strings )
 688         m_strings->Clear();
 689 }
 690
 691 void wxListBox::Delete( int n )
 692 {
 693     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 694
 695     GList *child = g_list_nth( m_list->children, n );
 696
 697     wxCHECK_RET( child, wxT("wrong listbox index") );
 698
 699     GList *list = g_list_append( (GList*) NULL, child->data );
 700     gtk_list_remove_items( m_list, list );
 701     g_list_free( list );
 702
 703     wxNode *node = m_clientList.Nth( n );
 704     if ( node )
 705     {
 706         if ( m_clientDataItemsType == wxClientData_Object )
 707         {
 708             wxClientData *cd = (wxClientData*)node->Data();
 709             delete cd;
 710         }
 711
 712         m_clientList.DeleteNode( node );
 713     }
 714
 715     if ( m_strings )
 716         m_strings->Remove(n);
 717 }
 718
 719 // ----------------------------------------------------------------------------
 720 // string list access
 721 // ----------------------------------------------------------------------------
 722
 723 void wxListBox::SetString( int n, const wxString &string )
 724 {
 725     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 726
 727     GList *child = g_list_nth( m_list->children, n );
 728     if (child)
 729     {
 730         GtkBin *bin = GTK_BIN( child->data );
 731         GtkLabel *label = GTK_LABEL( bin->child );
 732
 733         wxString str;
 734 #if wxUSE_CHECKLISTBOX
 735         if (m_hasCheckBoxes)
 736             str += wxCHECKLBOX_STRING;
 737 #endif // wxUSE_CHECKLISTBOX
 738         str += string;
 739
 740         gtk_label_set( label, wxGTK_CONV( str ) );
 741     }
 742     else
 743     {
 744         wxFAIL_MSG(wxT("wrong listbox index"));
 745     }
 746 }
 747
 748 wxString wxListBox::GetString( int n ) const
 749 {
 750     wxCHECK_MSG( m_list != NULL, wxT(""), wxT("invalid listbox") );
 751
 752     GList *child = g_list_nth( m_list->children, n );
 753     if (child)
 754     {
 755         GtkBin *bin = GTK_BIN( child->data );
 756         GtkLabel *label = GTK_LABEL( bin->child );
 757
 758 #ifdef __WXGTK20__
 759         wxString str = wxGTK_CONV_BACK( gtk_label_get_text( label ) );
 760 #else
 761         wxString str = wxString( label->label );
 762 #endif
 763
 764         return str;
 765     }
 766
 767     wxFAIL_MSG(wxT("wrong listbox index"));
 768
 769     return wxT("");
 770 }
 771
 772 int wxListBox::GetCount() const
 773 {
 774     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 775
 776     GList *children = m_list->children;
 777     return g_list_length(children);
 778 }
 779
 780 int wxListBox::FindString( const wxString &item ) const
 781 {
 782     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 783
 784     GList *child = m_list->children;
 785     int count = 0;
 786     while (child)
 787     {
 788         GtkBin *bin = GTK_BIN( child->data );
 789         GtkLabel *label = GTK_LABEL( bin->child );
 790
 791 #ifdef __WXGTK20__
 792         wxString str = wxGTK_CONV_BACK( gtk_label_get_text( label ) );
 793 #else
 794         wxString str = wxString( label->label );
 795 #endif
 796
 797         if (str == item)
 798             return count;
 799
 800         count++;
 801         child = child->next;
 802     }
 803
 804     // it's not an error if the string is not found -> no wxCHECK
 805
 806     return wxNOT_FOUND;
 807 }
 808
 809 // ----------------------------------------------------------------------------
 810 // selection
 811 // ----------------------------------------------------------------------------
 812
 813 int wxListBox::GetSelection() const
 814 {
 815     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 816
 817     GList *child = m_list->children;
 818     int count = 0;
 819     while (child)
 820     {
 821         if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED) return count;
 822         count++;
 823         child = child->next;
 824     }
 825     return -1;
 826 }
 827
 828 int wxListBox::GetSelections( wxArrayInt& aSelections ) const
 829 {
 830     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 831
 832     // get the number of selected items first
 833     GList *child = m_list->children;
 834     int count = 0;
 835     for (child = m_list->children; child != NULL; child = child->next)
 836     {
 837         if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED)
 838             count++;
 839     }
 840
 841     aSelections.Empty();
 842
 843     if (count > 0)
 844     {
 845         // now fill the list
 846         aSelections.Alloc(count); // optimization attempt
 847         int i = 0;
 848         for (child = m_list->children; child != NULL; child = child->next, i++)
 849         {
 850             if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED)
 851                  aSelections.Add(i);
 852         }
 853     }
 854
 855     return count;
 856 }
 857
 858 bool wxListBox::IsSelected( int n ) const
 859 {
 860     wxCHECK_MSG( m_list != NULL, FALSE, wxT("invalid listbox") );
 861
 862     GList *target = g_list_nth( m_list->children, n );
 863
 864     wxCHECK_MSG( target, FALSE, wxT("invalid listbox index") );
 865
 866     return (GTK_WIDGET(target->data)->state == GTK_STATE_SELECTED) ;
 867 }
 868
 869 void wxListBox::SetSelection( int n, bool select )
 870 {
 871     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 872
 873     m_blockEvent = TRUE;
 874
 875     if (select)
 876     {
 877         if ((m_windowStyle & wxLB_SINGLE) != 0)
 878             gtk_list_unselect_item( m_list, m_prevSelection );
 879         gtk_list_select_item( m_list, n );
 880         m_prevSelection = n;
 881     }
 882     else
 883         gtk_list_unselect_item( m_list, n );
 884
 885     m_blockEvent = FALSE;
 886 }
 887
 888 void wxListBox::DoSetFirstItem( int n )
 889 {
 890     wxCHECK_RET( m_list, wxT("invalid listbox") );
 891
 892     if (gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (m_list))
 893         return;
 894
 895     // terribly efficient
 896     const gchar *vadjustment_key = "gtk-vadjustment";
 897     guint vadjustment_key_id = g_quark_from_static_string (vadjustment_key);
 898
 899     GtkAdjustment *adjustment =
 900        (GtkAdjustment*) gtk_object_get_data_by_id (GTK_OBJECT (m_list), vadjustment_key_id);
 901     wxCHECK_RET( adjustment, wxT("invalid listbox code") );
 902
 903     GList *target = g_list_nth( m_list->children, n );
 904     wxCHECK_RET( target, wxT("invalid listbox index") );
 905
 906     GtkWidget *item = GTK_WIDGET(target->data);
 907     wxCHECK_RET( item, wxT("invalid listbox code") );
 908
 909     if (item->allocation.y == -1)
 910     {
 911         wxlistbox_idle_struct* data = new wxlistbox_idle_struct;
 912         data->m_listbox = this;
 913         data->m_item = n;
 914         data->m_tag = gtk_idle_add_priority( 800, wxlistbox_idle_callback, (gpointer) data );
 915
 916         return;
 917     }
 918
 919     float y = item->allocation.y;
 920     if (y > adjustment->upper - adjustment->page_size)
 921         y = adjustment->upper - adjustment->page_size;
 922         gtk_adjustment_set_value( adjustment, y );
 923 }
 924
 925 // ----------------------------------------------------------------------------
 926 // helpers
 927 // ----------------------------------------------------------------------------
 928
 929 int wxListBox::GtkGetIndex( GtkWidget *item ) const
 930 {
 931     if (item)
 932     {
 933         GList *child = m_list->children;
 934         int count = 0;
 935         while (child)
 936         {
 937             if (GTK_WIDGET(child->data) == item) return count;
 938             count++;
 939             child = child->next;
 940         }
 941     }
 942     return -1;
 943 }
 944
 945 #if wxUSE_TOOLTIPS
 946 void wxListBox::ApplyToolTip( GtkTooltips *tips, const wxChar *tip )
 947 {
 948     GList *child = m_list->children;
 949     while (child)
 950     {
 951         gtk_tooltips_set_tip( tips, GTK_WIDGET( child->data ), wxConvCurrent->cWX2MB(tip), (gchar*) NULL );
 952         child = child->next;
 953     }
 954 }
 955 #endif // wxUSE_TOOLTIPS
 956
 957 GtkWidget *wxListBox::GetConnectWidget()
 958 {
 959     return GTK_WIDGET(m_list);
 960 }
 961
 962 bool wxListBox::IsOwnGtkWindow( GdkWindow *window )
 963 {
 964     if (GTK_WIDGET(m_list)->window == window) return TRUE;
 965
 966     GList *child = m_list->children;
 967     while (child)
 968     {
 969         GtkWidget *bin = GTK_WIDGET( child->data );
 970         if (bin->window == window) return TRUE;
 971         child = child->next;
 972     }
 973
 974     return FALSE;
 975 }
 976
 977 void wxListBox::ApplyWidgetStyle()
 978 {
 979     SetWidgetStyle();
 980
 981     if (m_backgroundColour.Ok())
 982     {
 983         GdkWindow *window = GTK_WIDGET(m_list)->window;
 984         if ( window )
 985         {
 986             m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
 987             gdk_window_set_background( window, m_backgroundColour.GetColor() );
 988             gdk_window_clear( window );
 989         }
 990     }
 991
 992     GList *child = m_list->children;
 993     while (child)
 994     {
 995         gtk_widget_set_style( GTK_WIDGET(child->data), m_widgetStyle );
 996
 997         GtkBin *bin = GTK_BIN( child->data );
 998         GtkWidget *label = GTK_WIDGET( bin->child );
 999         gtk_widget_set_style( label, m_widgetStyle );
1000
1001         child = child->next;
1002     }
1003 }
1004
1005 void wxListBox::OnInternalIdle()
1006 {
1007     wxCursor cursor = m_cursor;
1008     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1009
1010     if (GTK_WIDGET(m_list)->window && cursor.Ok())
1011     {
1012         /* I now set the cursor the anew in every OnInternalIdle call
1013            as setting the cursor in a parent window also effects the
1014            windows above so that checking for the current cursor is
1015            not possible. */
1016
1017         gdk_window_set_cursor( GTK_WIDGET(m_list)->window, cursor.GetCursor() );
1018
1019         GList *child = m_list->children;
1020         while (child)
1021         {
1022             GtkBin *bin = GTK_BIN( child->data );
1023             GtkWidget *label = GTK_WIDGET( bin->child );
1024
1025             if (!label->window)
1026                 break;
1027             else
1028                 gdk_window_set_cursor( label->window, cursor.GetCursor() );
1029
1030             child = child->next;
1031         }
1032     }
1033
1034     if (g_delayedFocus == this)
1035     {
1036         if (GTK_WIDGET_REALIZED(m_widget))
1037         {
1038             gtk_widget_grab_focus( m_widget );
1039             g_delayedFocus = NULL;
1040         }
1041     }
1042
1043     UpdateWindowUI();
1044 }
1045
1046 wxSize wxListBox::DoGetBestSize() const
1047 {
1048     int lbWidth = 100;  // some defaults
1049     int lbHeight = 110;
1050     int wLine;
1051
1052     // Find the widest line
1053     for(int i = 0; i < GetCount(); i++) {
1054         wxString str(GetString(i));
1055         GetTextExtent(str, &wLine, NULL);
1056         lbWidth = wxMax(lbWidth, wLine);
1057     }
1058
1059     // Add room for the scrollbar
1060     lbWidth += wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
1061
1062     // And just a bit more
1063     int cx, cy;
1064     GetTextExtent("X", &cx, &cy);
1065     lbWidth += 3 * cx;
1066
1067     // don't make the listbox too tall (limit height to around 10 items) but don't
1068     // make it too small neither
1069     lbHeight = (cy+4) * wxMin(wxMax(GetCount(), 3), 10);
1070
1071     return wxSize(lbWidth, lbHeight);
1072 }
1073
1074 void wxListBox::FixUpMouseEvent(GtkWidget *widget, wxCoord& x, wxCoord& y)
1075 {
1076     // the mouse event coords are relative to the listbox items, we need to
1077     // translate them to the normal client coords
1078     x += widget->allocation.x;
1079     y += widget->allocation.y;
1080 }
1081
1082 #endif // wxUSE_LISTBOX
1083