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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  12 #pragma implementation "listbox.h"
  13 #endif
  14
  15 // For compilers that support precompilation, includes "wx.h".
  16 #include "wx/wxprec.h"
  17
  18 #include "wx/defs.h"
  19
  20 #if wxUSE_LISTBOX
  21
  22 #include "wx/listbox.h"
  23 #include "wx/dynarray.h"
  24 #include "wx/arrstr.h"
  25 #include "wx/utils.h"
  26 #include "wx/intl.h"
  27 #include "wx/checklst.h"
  28 #include "wx/settings.h"
  29 #include "wx/gtk/private.h"
  30
  31 #if wxUSE_TOOLTIPS
  32 #include "wx/tooltip.h"
  33 #endif
  34
  35 #include <gdk/gdk.h>
  36 #include <gtk/gtk.h>
  37 #include <gdk/gdkkeysyms.h>
  38
  39 //-----------------------------------------------------------------------------
  40 // idle system
  41 //-----------------------------------------------------------------------------
  42
  43 extern void wxapp_install_idle_handler();
  44 extern bool g_isIdle;
  45
  46 //-----------------------------------------------------------------------------
  47 // data
  48 //-----------------------------------------------------------------------------
  49
  50 extern bool           g_blockEventsOnDrag;
  51 extern bool           g_blockEventsOnScroll;
  52 extern wxCursor       g_globalCursor;
  53 extern wxWindowGTK   *g_delayedFocus;
  54
  55 static bool       g_hasDoubleClicked = FALSE;
  56
  57 //-----------------------------------------------------------------------------
  58 // idle callback for SetFirstItem
  59 //-----------------------------------------------------------------------------
  60
  61 struct wxlistbox_idle_struct
  62 {
  63     wxListBox   *m_listbox;
  64     int          m_item;
  65     gint         m_tag;
  66 };
  67
  68 extern "C" gint wxlistbox_idle_callback( gpointer gdata )
  69 {
  70     wxlistbox_idle_struct* data = (wxlistbox_idle_struct*) gdata;
  71     gdk_threads_enter();
  72
  73     gtk_idle_remove( data->m_tag );
  74
  75     // check that the items haven't been deleted from the listbox since we had
  76     // installed this callback
  77     wxListBox *lbox = data->m_listbox;
  78     if ( data->m_item < lbox->GetCount() )
  79     {
  80         lbox->SetFirstItem( data->m_item );
  81     }
  82
  83     delete data;
  84
  85     gdk_threads_leave();
  86
  87     return TRUE;
  88 }
  89
  90 //-----------------------------------------------------------------------------
  91 // "button_release_event"
  92 //-----------------------------------------------------------------------------
  93
  94 /* we would normally emit a wxEVT_COMMAND_LISTBOX_DOUBLECLICKED event once
  95    a GDK_2BUTTON_PRESS occurs, but this has the particular problem of the
  96    listbox keeping the focus until it receives a GDK_BUTTON_RELEASE event.
  97    this can lead to race conditions so that we emit the dclick event
  98    after the GDK_BUTTON_RELEASE event after the GDK_2BUTTON_PRESS event */
  99
 100 static gint
 101 gtk_listbox_button_release_callback( GtkWidget * WXUNUSED(widget),
 102                                      GdkEventButton * WXUNUSED(gdk_event),
 103                                      wxListBox *listbox )
 104 {
 105     if (g_isIdle) wxapp_install_idle_handler();
 106
 107     if (g_blockEventsOnDrag) return FALSE;
 108     if (g_blockEventsOnScroll) return FALSE;
 109
 110     if (!listbox->m_hasVMT) return FALSE;
 111
 112     if (!g_hasDoubleClicked) return FALSE;
 113
 114     wxCommandEvent event( wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, listbox->GetId() );
 115     event.SetEventObject( listbox );
 116
 117     wxArrayInt aSelections;
 118     int n, count = listbox->GetSelections(aSelections);
 119     if ( count > 0 )
 120     {
 121         n = aSelections[0];
 122         if ( listbox->HasClientObjectData() )
 123             event.SetClientObject( listbox->GetClientObject(n) );
 124         else if ( listbox->HasClientUntypedData() )
 125             event.SetClientData( listbox->GetClientData(n) );
 126         event.SetString( listbox->GetString(n) );
 127     }
 128     else
 129     {
 130         n = -1;
 131     }
 132
 133     event.m_commandInt = n;
 134
 135     listbox->GetEventHandler()->ProcessEvent( event );
 136
 137     return FALSE;
 138 }
 139
 140 //-----------------------------------------------------------------------------
 141 // "button_press_event"
 142 //-----------------------------------------------------------------------------
 143
 144 static gint
 145 gtk_listbox_button_press_callback( GtkWidget *widget,
 146                                    GdkEventButton *gdk_event,
 147                                    wxListBox *listbox )
 148 {
 149     if (g_isIdle) wxapp_install_idle_handler();
 150
 151     if (g_blockEventsOnDrag) return FALSE;
 152     if (g_blockEventsOnScroll) return FALSE;
 153
 154     if (!listbox->m_hasVMT) return FALSE;
 155
 156     int sel = listbox->GtkGetIndex( widget );
 157
 158 #if wxUSE_CHECKLISTBOX
 159     if ((listbox->m_hasCheckBoxes) && (gdk_event->x < 15) && (gdk_event->type != GDK_2BUTTON_PRESS))
 160     {
 161         wxCheckListBox *clb = (wxCheckListBox *)listbox;
 162
 163         clb->Check( sel, !clb->IsChecked(sel) );
 164
 165         wxCommandEvent event( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, listbox->GetId() );
 166         event.SetEventObject( listbox );
 167         event.SetInt( sel );
 168         listbox->GetEventHandler()->ProcessEvent( event );
 169     }
 170 #endif // wxUSE_CHECKLISTBOX
 171
 172     /* emit wxEVT_COMMAND_LISTBOX_DOUBLECLICKED later */
 173     g_hasDoubleClicked = (gdk_event->type == GDK_2BUTTON_PRESS);
 174
 175     return FALSE;
 176 }
 177
 178 //-----------------------------------------------------------------------------
 179 // "key_press_event"
 180 //-----------------------------------------------------------------------------
 181
 182 static gint
 183 gtk_listbox_key_press_callback( GtkWidget *widget, GdkEventKey *gdk_event, wxListBox *listbox )
 184 {
 185     if (g_isIdle)
 186         wxapp_install_idle_handler();
 187
 188     if (g_blockEventsOnDrag)
 189         return FALSE;
 190
 191     bool ret = FALSE;
 192
 193     if ((gdk_event->keyval == GDK_Tab) || (gdk_event->keyval == GDK_ISO_Left_Tab))
 194     {
 195         wxNavigationKeyEvent new_event;
 196         /* GDK reports GDK_ISO_Left_Tab for SHIFT-TAB */
 197         new_event.SetDirection( (gdk_event->keyval == GDK_Tab) );
 198         /* CTRL-TAB changes the (parent) window, i.e. switch notebook page */
 199         new_event.SetWindowChange( (gdk_event->state & GDK_CONTROL_MASK) );
 200         new_event.SetCurrentFocus( listbox );
 201         ret = listbox->GetEventHandler()->ProcessEvent( new_event );
 202     }
 203
 204     if ((gdk_event->keyval == GDK_Return) && (!ret))
 205     {
 206         // eat return in all modes
 207         ret = TRUE;
 208     }
 209
 210 #if wxUSE_CHECKLISTBOX
 211     if ((gdk_event->keyval == ' ') && (listbox->m_hasCheckBoxes) && (!ret))
 212     {
 213         int sel = listbox->GtkGetIndex( widget );
 214
 215         wxCheckListBox *clb = (wxCheckListBox *)listbox;
 216
 217         clb->Check( sel, !clb->IsChecked(sel) );
 218
 219         wxCommandEvent new_event( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, listbox->GetId() );
 220         new_event.SetEventObject( listbox );
 221         new_event.SetInt( sel );
 222         ret = listbox->GetEventHandler()->ProcessEvent( new_event );
 223     }
 224 #endif // wxUSE_CHECKLISTBOX
 225
 226     // Check or uncheck item with SPACE
 227     if ((gdk_event->keyval == ' ') && (!ret) &&
 228          (((listbox->GetWindowStyleFlag() & wxLB_MULTIPLE) != 0) ||
 229           ((listbox->GetWindowStyleFlag() & wxLB_EXTENDED) != 0)) )
 230     {
 231         int sel = listbox->GtkGetIndex( widget );
 232
 233         if (sel != -1)
 234         {
 235             ret = TRUE;
 236
 237             if (listbox->IsSelected( sel ))
 238                 gtk_list_unselect_item( listbox->m_list, sel );
 239             else
 240                 gtk_list_select_item( listbox->m_list, sel );
 241
 242             wxCommandEvent new_event(wxEVT_COMMAND_LISTBOX_SELECTED, listbox->GetId() );
 243             new_event.SetEventObject( listbox );
 244             wxArrayInt aSelections;
 245             int n, count = listbox->GetSelections(aSelections);
 246             if ( count > 0 )
 247             {
 248                 n = aSelections[0];
 249                 if ( listbox->HasClientObjectData() )
 250                     new_event.SetClientObject( listbox->GetClientObject(n) );
 251                 else if ( listbox->HasClientUntypedData() )
 252                     new_event.SetClientData( listbox->GetClientData(n) );
 253                 new_event.SetString( listbox->GetString(n) );
 254             }
 255             else
 256             {
 257                 n = -1;
 258             }
 259             new_event.m_commandInt = n;
 260             listbox->GetEventHandler()->ProcessEvent( new_event );
 261         }
 262     }
 263
 264     if (ret)
 265     {
 266         gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "key_press_event" );
 267         return TRUE;
 268     }
 269
 270     return FALSE;
 271 }
 272
 273 //-----------------------------------------------------------------------------
 274 // "select" and "deselect"
 275 //-----------------------------------------------------------------------------
 276
 277 static void gtk_listitem_select_cb( GtkWidget *widget, wxListBox *listbox, bool is_selection );
 278
 279 static void gtk_listitem_select_callback( GtkWidget *widget, wxListBox *listbox )
 280 {
 281     gtk_listitem_select_cb( widget, listbox, TRUE );
 282 }
 283
 284 static void gtk_listitem_deselect_callback( GtkWidget *widget, wxListBox *listbox )
 285 {
 286     gtk_listitem_select_cb( widget, listbox, FALSE );
 287 }
 288
 289 static void gtk_listitem_select_cb( GtkWidget *widget,
 290                                     wxListBox *listbox,
 291                                     bool is_selection )
 292 {
 293     if (g_isIdle) wxapp_install_idle_handler();
 294
 295     if (!listbox->m_hasVMT) return;
 296     if (g_blockEventsOnDrag) return;
 297
 298     if (listbox->m_blockEvent) return;
 299
 300     wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, listbox->GetId() );
 301     event.SetEventObject( listbox );
 302
 303     // indicate whether this is a selection or a deselection
 304     event.SetExtraLong( is_selection );
 305
 306     if ((listbox->GetWindowStyleFlag() & wxLB_SINGLE) != 0)
 307     {
 308         int sel = listbox->GtkGetIndex( widget );
 309
 310         if (listbox->m_prevSelection != sel)
 311             gtk_list_unselect_item( listbox->m_list, listbox->m_prevSelection );
 312
 313         listbox->m_prevSelection = sel;
 314     }
 315
 316     wxArrayInt aSelections;
 317     int n, count = listbox->GetSelections(aSelections);
 318     if ( count > 0 )
 319     {
 320         n = aSelections[0];
 321         if ( listbox->HasClientObjectData() )
 322             event.SetClientObject( listbox->GetClientObject(n) );
 323         else if ( listbox->HasClientUntypedData() )
 324             event.SetClientData( listbox->GetClientData(n) );
 325         event.SetString( listbox->GetString(n) );
 326     }
 327     else
 328     {
 329         n = -1;
 330     }
 331
 332     event.m_commandInt = n;
 333
 334 //    No longer required with new code in wxLB_SINGLE
 335 //    listbox->GetEventHandler()->AddPendingEvent( event );
 336     listbox->GetEventHandler()->ProcessEvent( event );
 337 }
 338
 339 //-----------------------------------------------------------------------------
 340 // wxListBox
 341 //-----------------------------------------------------------------------------
 342
 343 IMPLEMENT_DYNAMIC_CLASS(wxListBox,wxControl)
 344
 345 // ----------------------------------------------------------------------------
 346 // construction
 347 // ----------------------------------------------------------------------------
 348
 349 wxListBox::wxListBox()
 350 {
 351     m_list = (GtkList *) NULL;
 352 #if wxUSE_CHECKLISTBOX
 353     m_hasCheckBoxes = FALSE;
 354 #endif // wxUSE_CHECKLISTBOX
 355 }
 356
 357 bool wxListBox::Create( wxWindow *parent, wxWindowID id,
 358                         const wxPoint &pos, const wxSize &size,
 359                         const wxArrayString& choices,
 360                         long style, const wxValidator& validator,
 361                         const wxString &name )
 362 {
 363     wxCArrayString chs(choices);
 364
 365     return Create( parent, id, pos, size, chs.GetCount(), chs.GetStrings(),
 366                    style, validator, name );
 367 }
 368
 369 bool wxListBox::Create( wxWindow *parent, wxWindowID id,
 370                         const wxPoint &pos, const wxSize &size,
 371                         int n, const wxString choices[],
 372                         long style, const wxValidator& validator,
 373                         const wxString &name )
 374 {
 375     m_needParent = TRUE;
 376     m_acceptsFocus = TRUE;
 377     m_prevSelection = 0;  // or -1 ??
 378     m_blockEvent = FALSE;
 379
 380     if (!PreCreation( parent, pos, size ) ||
 381         !CreateBase( parent, id, pos, size, style, validator, name ))
 382     {
 383         wxFAIL_MSG( wxT("wxListBox creation failed") );
 384         return FALSE;
 385     }
 386
 387     m_widget = gtk_scrolled_window_new( (GtkAdjustment*) NULL, (GtkAdjustment*) NULL );
 388     if (style & wxLB_ALWAYS_SB)
 389     {
 390       gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
 391         GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS );
 392     }
 393     else
 394     {
 395       gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
 396         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 397     }
 398
 399     m_list = GTK_LIST( gtk_list_new() );
 400
 401     GtkSelectionMode mode;
 402     if (style & wxLB_MULTIPLE)
 403     {
 404         mode = GTK_SELECTION_MULTIPLE;
 405     }
 406     else if (style & wxLB_EXTENDED)
 407     {
 408         mode = GTK_SELECTION_EXTENDED;
 409     }
 410     else
 411     {
 412         // if style was 0 set single mode
 413         m_windowStyle |= wxLB_SINGLE;
 414         mode = GTK_SELECTION_MULTIPLE;
 415     }
 416
 417     gtk_list_set_selection_mode( GTK_LIST(m_list), mode );
 418
 419     gtk_scrolled_window_add_with_viewport( GTK_SCROLLED_WINDOW(m_widget), GTK_WIDGET(m_list) );
 420
 421     /* make list scroll when moving the focus down using cursor keys */
 422     gtk_container_set_focus_vadjustment(
 423         GTK_CONTAINER(m_list),
 424         gtk_scrolled_window_get_vadjustment(
 425             GTK_SCROLLED_WINDOW(m_widget)));
 426
 427     gtk_widget_show( GTK_WIDGET(m_list) );
 428
 429     if ( style & wxLB_SORT )
 430     {
 431         // this will change DoAppend() behaviour
 432         m_strings = new wxSortedArrayString;
 433     }
 434     else
 435     {
 436         m_strings = (wxSortedArrayString *)NULL;
 437     }
 438
 439     for (int i = 0; i < n; i++)
 440     {
 441         // add one by one
 442         DoAppend(choices[i]);
 443     }
 444
 445     m_parent->DoAddChild( this );
 446
 447     PostCreation(size);
 448     SetBestSize(size); // need this too because this is a wxControlWithItems
 449
 450     return TRUE;
 451 }
 452
 453 wxListBox::~wxListBox()
 454 {
 455     m_hasVMT = FALSE;
 456
 457     Clear();
 458
 459     if (m_strings)
 460       delete m_strings;
 461 }
 462
 463 // ----------------------------------------------------------------------------
 464 // adding items
 465 // ----------------------------------------------------------------------------
 466
 467 void wxListBox::DoInsertItems(const wxArrayString& items, int pos)
 468 {
 469     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 470
 471     // VZ: notice that InsertItems knows nothing about sorting, so calling it
 472     //     from outside (and not from our own Append) is likely to break
 473     //     everything
 474
 475     // code elsewhere supposes we have as many items in m_clientList as items
 476     // in the listbox
 477     wxASSERT_MSG( m_clientList.GetCount() == (size_t)GetCount(),
 478                   wxT("bug in client data management") );
 479
 480     InvalidateBestSize();
 481
 482     GList *children = m_list->children;
 483     int length = g_list_length(children);
 484
 485     wxCHECK_RET( pos <= length, wxT("invalid index in wxListBox::InsertItems") );
 486
 487     size_t nItems = items.GetCount();
 488     int index;
 489
 490     if (m_strings)
 491     {
 492         for (size_t n = 0; n < nItems; n++)
 493         {
 494             index = m_strings->Add( items[n] );
 495
 496             if (index != GetCount())
 497             {
 498                 GtkAddItem( items[n], index );
 499                 wxList::compatibility_iterator node = m_clientList.Item( index );
 500                 m_clientList.Insert( node, (wxObject*) NULL );
 501             }
 502             else
 503             {
 504                 GtkAddItem( items[n] );
 505                 m_clientList.Append( (wxObject*) NULL );
 506             }
 507         }
 508     }
 509     else
 510     {
 511         if (pos == length)
 512         {
 513             for ( size_t n = 0; n < nItems; n++ )
 514             {
 515                 GtkAddItem( items[n] );
 516
 517                 m_clientList.Append((wxObject *)NULL);
 518             }
 519         }
 520         else
 521         {
 522             wxList::compatibility_iterator node = m_clientList.Item( pos );
 523             for ( size_t n = 0; n < nItems; n++ )
 524             {
 525                 GtkAddItem( items[n], pos+n );
 526
 527                 m_clientList.Insert( node, (wxObject *)NULL );
 528             }
 529         }
 530     }
 531
 532     wxASSERT_MSG( m_clientList.GetCount() == (size_t)GetCount(),
 533                       wxT("bug in client data management") );
 534 }
 535
 536 int wxListBox::DoAppend( const wxString& item )
 537 {
 538     InvalidateBestSize();
 539
 540     if (m_strings)
 541     {
 542         // need to determine the index
 543         int index = m_strings->Add( item );
 544
 545         // only if not at the end anyway
 546         if (index != GetCount())
 547         {
 548            GtkAddItem( item, index );
 549
 550            wxList::compatibility_iterator node = m_clientList.Item( index );
 551            m_clientList.Insert( node, (wxObject *)NULL );
 552
 553            return index;
 554         }
 555     }
 556
 557     GtkAddItem(item);
 558
 559     m_clientList.Append((wxObject *)NULL);
 560
 561     return GetCount() - 1;
 562 }
 563
 564 void wxListBox::GtkAddItem( const wxString &item, int pos )
 565 {
 566     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 567
 568     GtkWidget *list_item;
 569
 570     wxString label(item);
 571 #if wxUSE_CHECKLISTBOX
 572     if (m_hasCheckBoxes)
 573     {
 574         label.Prepend(wxCHECKLBOX_STRING);
 575     }
 576 #endif // wxUSE_CHECKLISTBOX
 577
 578     list_item = gtk_list_item_new_with_label( wxGTK_CONV( label ) );
 579
 580     GList *gitem_list = g_list_alloc ();
 581     gitem_list->data = list_item;
 582
 583     if (pos == -1)
 584         gtk_list_append_items( GTK_LIST (m_list), gitem_list );
 585     else
 586         gtk_list_insert_items( GTK_LIST (m_list), gitem_list, pos );
 587
 588     gtk_signal_connect( GTK_OBJECT(list_item), "select",
 589       GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 590
 591     if (HasFlag(wxLB_MULTIPLE) || HasFlag(wxLB_EXTENDED))
 592         gtk_signal_connect( GTK_OBJECT(list_item), "deselect",
 593           GTK_SIGNAL_FUNC(gtk_listitem_deselect_callback), (gpointer)this );
 594
 595     gtk_signal_connect( GTK_OBJECT(list_item),
 596                         "button_press_event",
 597                         (GtkSignalFunc)gtk_listbox_button_press_callback,
 598                         (gpointer) this );
 599
 600     gtk_signal_connect_after( GTK_OBJECT(list_item),
 601                         "button_release_event",
 602                         (GtkSignalFunc)gtk_listbox_button_release_callback,
 603                         (gpointer) this );
 604
 605     gtk_signal_connect( GTK_OBJECT(list_item),
 606                            "key_press_event",
 607                            (GtkSignalFunc)gtk_listbox_key_press_callback,
 608                            (gpointer)this );
 609
 610     ConnectWidget( list_item );
 611
 612     gtk_widget_show( list_item );
 613
 614     if (GTK_WIDGET_REALIZED(m_widget))
 615     {
 616         gtk_widget_realize( list_item );
 617         gtk_widget_realize( GTK_BIN(list_item)->child );
 618
 619 #if wxUSE_TOOLTIPS
 620         if (m_tooltip) m_tooltip->Apply( this );
 621 #endif
 622     }
 623
 624     // Apply current widget style to the new list_item
 625     GtkRcStyle *style = CreateWidgetStyle();
 626     if (style)
 627     {
 628         gtk_widget_modify_style( GTK_WIDGET( list_item ), style );
 629         GtkBin *bin = GTK_BIN( list_item );
 630         GtkWidget *label = GTK_WIDGET( bin->child );
 631         gtk_widget_modify_style( label, style );
 632         gtk_rc_style_unref( style );
 633     }
 634 }
 635
 636 void wxListBox::DoSetItems( const wxArrayString& items,
 637                             void **clientData)
 638 {
 639     Clear();
 640
 641     DoInsertItems(items, 0);
 642
 643     if ( clientData )
 644     {
 645         size_t count = items.GetCount();
 646         for ( size_t n = 0; n < count; n++ )
 647         {
 648             SetClientData(n, clientData[n]);
 649         }
 650     }
 651 }
 652
 653 // ----------------------------------------------------------------------------
 654 // deleting items
 655 // ----------------------------------------------------------------------------
 656
 657 void wxListBox::Clear()
 658 {
 659     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 660
 661     gtk_list_clear_items( m_list, 0, GetCount() );
 662
 663     if ( GTK_LIST(m_list)->last_focus_child != NULL  )
 664     {
 665         // This should be NULL, I think.
 666         GTK_LIST(m_list)->last_focus_child = NULL;
 667     }
 668
 669     if ( HasClientObjectData() )
 670     {
 671         // destroy the data (due to Robert's idea of using wxList<wxObject>
 672         // and not wxList<wxClientData> we can't just say
 673         // m_clientList.DeleteContents(TRUE) - this would crash!
 674         wxList::compatibility_iterator node = m_clientList.GetFirst();
 675         while ( node )
 676         {
 677             delete (wxClientData *)node->GetData();
 678             node = node->GetNext();
 679         }
 680     }
 681     m_clientList.Clear();
 682
 683     if ( m_strings )
 684         m_strings->Clear();
 685 }
 686
 687 void wxListBox::Delete( int n )
 688 {
 689     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 690
 691     GList *child = g_list_nth( m_list->children, n );
 692
 693     wxCHECK_RET( child, wxT("wrong listbox index") );
 694
 695     GList *list = g_list_append( (GList*) NULL, child->data );
 696     gtk_list_remove_items( m_list, list );
 697     g_list_free( list );
 698
 699     wxList::compatibility_iterator node = m_clientList.Item( n );
 700     if ( node )
 701     {
 702         if ( m_clientDataItemsType == wxClientData_Object )
 703         {
 704             wxClientData *cd = (wxClientData*)node->GetData();
 705             delete cd;
 706         }
 707
 708         m_clientList.Erase( node );
 709     }
 710
 711     if ( m_strings )
 712         m_strings->RemoveAt(n);
 713 }
 714
 715 // ----------------------------------------------------------------------------
 716 // client data
 717 // ----------------------------------------------------------------------------
 718
 719 void wxListBox::DoSetItemClientData( int n, void* clientData )
 720 {
 721     wxCHECK_RET( m_widget != NULL, wxT("invalid listbox control") );
 722
 723     wxList::compatibility_iterator node = m_clientList.Item( n );
 724     wxCHECK_RET( node, wxT("invalid index in wxListBox::DoSetItemClientData") );
 725
 726     node->SetData( (wxObject*) clientData );
 727 }
 728
 729 void* wxListBox::DoGetItemClientData( int n ) const
 730 {
 731     wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid listbox control") );
 732
 733     wxList::compatibility_iterator node = m_clientList.Item( n );
 734     wxCHECK_MSG( node, NULL, wxT("invalid index in wxListBox::DoGetItemClientData") );
 735
 736     return node->GetData();
 737 }
 738
 739 void wxListBox::DoSetItemClientObject( int n, wxClientData* clientData )
 740 {
 741     wxCHECK_RET( m_widget != NULL, wxT("invalid listbox control") );
 742
 743     wxList::compatibility_iterator node = m_clientList.Item( n );
 744     wxCHECK_RET( node, wxT("invalid index in wxListBox::DoSetItemClientObject") );
 745
 746     // wxItemContainer already deletes data for us
 747
 748     node->SetData( (wxObject*) clientData );
 749 }
 750
 751 wxClientData* wxListBox::DoGetItemClientObject( int n ) const
 752 {
 753     wxCHECK_MSG( m_widget != NULL, (wxClientData*) NULL, wxT("invalid listbox control") );
 754
 755     wxList::compatibility_iterator node = m_clientList.Item( n );
 756     wxCHECK_MSG( node, (wxClientData *)NULL,
 757                  wxT("invalid index in wxListBox::DoGetItemClientObject") );
 758
 759     return (wxClientData*) node->GetData();
 760 }
 761
 762 // ----------------------------------------------------------------------------
 763 // string list access
 764 // ----------------------------------------------------------------------------
 765
 766 wxString wxListBox::GetRealLabel(GList *item) const
 767 {
 768     GtkBin *bin = GTK_BIN( item->data );
 769     GtkLabel *label = GTK_LABEL( bin->child );
 770
 771     wxString str;
 772
 773 #ifdef __WXGTK20__
 774     str = wxGTK_CONV_BACK( gtk_label_get_text( label ) );
 775 #else
 776     str = wxString( label->label );
 777 #endif
 778
 779 #if wxUSE_CHECKLISTBOX
 780     // checklistboxes have "[±] " prepended to their lables, remove it
 781     //
 782     // NB: 4 below is the length of wxCHECKLBOX_STRING from wx/gtk/checklst.h
 783     if ( m_hasCheckBoxes )
 784         str.erase(0, 4);
 785 #endif // wxUSE_CHECKLISTBOX
 786
 787     return str;
 788 }
 789
 790 void wxListBox::SetString( int n, const wxString &string )
 791 {
 792     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 793
 794     GList *child = g_list_nth( m_list->children, n );
 795     if (child)
 796     {
 797         GtkBin *bin = GTK_BIN( child->data );
 798         GtkLabel *label = GTK_LABEL( bin->child );
 799
 800         wxString str;
 801 #if wxUSE_CHECKLISTBOX
 802         if (m_hasCheckBoxes)
 803             str += wxCHECKLBOX_STRING;
 804 #endif // wxUSE_CHECKLISTBOX
 805         str += string;
 806
 807         gtk_label_set( label, wxGTK_CONV( str ) );
 808     }
 809     else
 810     {
 811         wxFAIL_MSG(wxT("wrong listbox index"));
 812     }
 813 }
 814
 815 wxString wxListBox::GetString( int n ) const
 816 {
 817     wxCHECK_MSG( m_list != NULL, wxT(""), wxT("invalid listbox") );
 818
 819     GList *child = g_list_nth( m_list->children, n );
 820     if (child)
 821     {
 822         return GetRealLabel(child);
 823     }
 824
 825     wxFAIL_MSG(wxT("wrong listbox index"));
 826
 827     return wxT("");
 828 }
 829
 830 int wxListBox::GetCount() const
 831 {
 832     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 833
 834     GList *children = m_list->children;
 835     return g_list_length(children);
 836 }
 837
 838 int wxListBox::FindString( const wxString &item ) const
 839 {
 840     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 841
 842     GList *child = m_list->children;
 843     int count = 0;
 844     while (child)
 845     {
 846         if ( GetRealLabel(child) == item )
 847             return count;
 848
 849         count++;
 850         child = child->next;
 851     }
 852
 853     // it's not an error if the string is not found -> no wxCHECK
 854
 855     return wxNOT_FOUND;
 856 }
 857
 858 // ----------------------------------------------------------------------------
 859 // selection
 860 // ----------------------------------------------------------------------------
 861
 862 int wxListBox::GetSelection() const
 863 {
 864     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 865
 866     GList *child = m_list->children;
 867     int count = 0;
 868     while (child)
 869     {
 870         if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED) return count;
 871         count++;
 872         child = child->next;
 873     }
 874     return -1;
 875 }
 876
 877 int wxListBox::GetSelections( wxArrayInt& aSelections ) const
 878 {
 879     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 880
 881     // get the number of selected items first
 882     GList *child = m_list->children;
 883     int count = 0;
 884     for (child = m_list->children; child != NULL; child = child->next)
 885     {
 886         if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED)
 887             count++;
 888     }
 889
 890     aSelections.Empty();
 891
 892     if (count > 0)
 893     {
 894         // now fill the list
 895         aSelections.Alloc(count); // optimization attempt
 896         int i = 0;
 897         for (child = m_list->children; child != NULL; child = child->next, i++)
 898         {
 899             if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED)
 900                  aSelections.Add(i);
 901         }
 902     }
 903
 904     return count;
 905 }
 906
 907 bool wxListBox::IsSelected( int n ) const
 908 {
 909     wxCHECK_MSG( m_list != NULL, FALSE, wxT("invalid listbox") );
 910
 911     GList *target = g_list_nth( m_list->children, n );
 912
 913     wxCHECK_MSG( target, FALSE, wxT("invalid listbox index") );
 914
 915     return (GTK_WIDGET(target->data)->state == GTK_STATE_SELECTED) ;
 916 }
 917
 918 void wxListBox::SetSelection( int n, bool select )
 919 {
 920     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 921
 922     m_blockEvent = TRUE;
 923
 924     if (select)
 925     {
 926         if ((m_windowStyle & wxLB_SINGLE) != 0)
 927             gtk_list_unselect_item( m_list, m_prevSelection );
 928         gtk_list_select_item( m_list, n );
 929         m_prevSelection = n;
 930     }
 931     else
 932         gtk_list_unselect_item( m_list, n );
 933
 934     m_blockEvent = FALSE;
 935 }
 936
 937 void wxListBox::DoSetFirstItem( int n )
 938 {
 939     wxCHECK_RET( m_list, wxT("invalid listbox") );
 940
 941     if (gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (m_list))
 942         return;
 943
 944     // terribly efficient
 945     const gchar *vadjustment_key = "gtk-vadjustment";
 946     guint vadjustment_key_id = g_quark_from_static_string (vadjustment_key);
 947
 948     GtkAdjustment *adjustment =
 949        (GtkAdjustment*) gtk_object_get_data_by_id (GTK_OBJECT (m_list), vadjustment_key_id);
 950     wxCHECK_RET( adjustment, wxT("invalid listbox code") );
 951
 952     GList *target = g_list_nth( m_list->children, n );
 953     wxCHECK_RET( target, wxT("invalid listbox index") );
 954
 955     GtkWidget *item = GTK_WIDGET(target->data);
 956     wxCHECK_RET( item, wxT("invalid listbox code") );
 957
 958     if (item->allocation.y == -1)
 959     {
 960         wxlistbox_idle_struct* data = new wxlistbox_idle_struct;
 961         data->m_listbox = this;
 962         data->m_item = n;
 963         data->m_tag = gtk_idle_add_priority( 800, wxlistbox_idle_callback, (gpointer) data );
 964
 965         return;
 966     }
 967
 968     float y = item->allocation.y;
 969     if (y > adjustment->upper - adjustment->page_size)
 970         y = adjustment->upper - adjustment->page_size;
 971     gtk_adjustment_set_value( adjustment, y );
 972 }
 973
 974 // ----------------------------------------------------------------------------
 975 // helpers
 976 // ----------------------------------------------------------------------------
 977
 978 int wxListBox::GtkGetIndex( GtkWidget *item ) const
 979 {
 980     if (item)
 981     {
 982         GList *child = m_list->children;
 983         int count = 0;
 984         while (child)
 985         {
 986             if (GTK_WIDGET(child->data) == item) return count;
 987             count++;
 988             child = child->next;
 989         }
 990     }
 991     return -1;
 992 }
 993
 994 #if wxUSE_TOOLTIPS
 995 void wxListBox::ApplyToolTip( GtkTooltips *tips, const wxChar *tip )
 996 {
 997     GList *child = m_list->children;
 998     while (child)
 999     {
1000         gtk_tooltips_set_tip( tips, GTK_WIDGET( child->data ), wxConvCurrent->cWX2MB(tip), (gchar*) NULL );
1001         child = child->next;
1002     }
1003 }
1004 #endif // wxUSE_TOOLTIPS
1005
1006 GtkWidget *wxListBox::GetConnectWidget()
1007 {
1008     // return GTK_WIDGET(m_list);
1009     return m_widget;
1010 }
1011
1012 bool wxListBox::IsOwnGtkWindow( GdkWindow *window )
1013 {
1014     return TRUE;
1015
1016 #if 0
1017     if (m_widget->window == window) return TRUE;
1018
1019     if (GTK_WIDGET(m_list)->window == window) return TRUE;
1020
1021     GList *child = m_list->children;
1022     while (child)
1023     {
1024         GtkWidget *bin = GTK_WIDGET( child->data );
1025         if (bin->window == window) return TRUE;
1026         child = child->next;
1027     }
1028
1029     return FALSE;
1030 #endif
1031 }
1032
1033 void wxListBox::DoApplyWidgetStyle(GtkRcStyle *style)
1034 {
1035     if (m_hasBgCol && m_backgroundColour.Ok())
1036     {
1037         GdkWindow *window = GTK_WIDGET(m_list)->window;
1038         if ( window )
1039         {
1040             m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1041             gdk_window_set_background( window, m_backgroundColour.GetColor() );
1042             gdk_window_clear( window );
1043         }
1044     }
1045
1046     GList *child = m_list->children;
1047     while (child)
1048     {
1049         gtk_widget_modify_style( GTK_WIDGET(child->data), style );
1050
1051         GtkBin *bin = GTK_BIN( child->data );
1052         GtkWidget *label = GTK_WIDGET( bin->child );
1053         gtk_widget_modify_style( label, style );
1054
1055         child = child->next;
1056     }
1057 }
1058
1059 void wxListBox::OnInternalIdle()
1060 {
1061     wxCursor cursor = m_cursor;
1062     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1063
1064     if (GTK_WIDGET(m_list)->window && cursor.Ok())
1065     {
1066         /* I now set the cursor the anew in every OnInternalIdle call
1067            as setting the cursor in a parent window also effects the
1068            windows above so that checking for the current cursor is
1069            not possible. */
1070
1071         gdk_window_set_cursor( GTK_WIDGET(m_list)->window, cursor.GetCursor() );
1072
1073         GList *child = m_list->children;
1074         while (child)
1075         {
1076             GtkBin *bin = GTK_BIN( child->data );
1077             GtkWidget *label = GTK_WIDGET( bin->child );
1078
1079             if (!label->window)
1080                 break;
1081             else
1082                 gdk_window_set_cursor( label->window, cursor.GetCursor() );
1083
1084             child = child->next;
1085         }
1086     }
1087
1088     if (g_delayedFocus == this)
1089     {
1090         if (GTK_WIDGET_REALIZED(m_widget))
1091         {
1092             gtk_widget_grab_focus( m_widget );
1093             g_delayedFocus = NULL;
1094         }
1095     }
1096
1097     if (wxUpdateUIEvent::CanUpdate(this))
1098         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1099 }
1100
1101 wxSize wxListBox::DoGetBestSize() const
1102 {
1103     int lbWidth = 100;  // some defaults
1104     int lbHeight = 110;
1105     int wLine;
1106
1107     // Find the widest line
1108     for(int i = 0; i < GetCount(); i++) {
1109         wxString str(GetString(i));
1110         GetTextExtent(str, &wLine, NULL);
1111         lbWidth = wxMax(lbWidth, wLine);
1112     }
1113
1114     // Add room for the scrollbar
1115     lbWidth += wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
1116
1117     // And just a bit more
1118     int cx, cy;
1119     GetTextExtent( wxT("X"), &cx, &cy);
1120     lbWidth += 3 * cx;
1121
1122     // don't make the listbox too tall (limit height to around 10 items) but don't
1123     // make it too small neither
1124     lbHeight = (cy+4) * wxMin(wxMax(GetCount(), 3), 10);
1125
1126     wxSize best(lbWidth, lbHeight);
1127     CacheBestSize(best);
1128     return best;
1129 }
1130
1131 void wxListBox::FixUpMouseEvent(GtkWidget *widget, wxCoord& x, wxCoord& y)
1132 {
1133     // the mouse event coords are relative to the listbox items, we need to
1134     // translate them to the normal client coords
1135     x += widget->allocation.x;
1136     y += widget->allocation.y;
1137 }
1138
1139
1140 // static
1141 wxVisualAttributes
1142 wxListBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1143 {
1144     return GetDefaultAttributesFromGTKWidget(gtk_list_new, true);
1145 }
1146
1147 #endif // wxUSE_LISTBOX
1148