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 // conditional compilation
  42 //-------------------------------------------------------------------------
  43
  44 #if (GTK_MINOR_VERSION > 0)
  45     #define NEW_GTK_SCROLL_CODE
  46 #endif
  47
  48 //-----------------------------------------------------------------------------
  49 // private functions
  50 //-----------------------------------------------------------------------------
  51
  52 #if wxUSE_CHECKLISTBOX
  53
  54 // checklistboxes have "[±] " prepended to their lables, this macro removes it
  55 // (NB: 4 below is the length of wxCHECKLBOX_STRING above)
  56 //
  57 // the argument to it is a "const char *" pointer
  58 #define GET_REAL_LABEL(label) ((m_hasCheckBoxes)?(label)+4 : (label))
  59
  60 #else // !wxUSE_CHECKLISTBOX
  61
  62 #define GET_REAL_LABEL(label) (label)
  63
  64 #endif // wxUSE_CHECKLISTBOX
  65
  66 //-----------------------------------------------------------------------------
  67 // data
  68 //-----------------------------------------------------------------------------
  69
  70 extern bool       g_blockEventsOnDrag;
  71 extern bool       g_blockEventsOnScroll;
  72 extern wxCursor   g_globalCursor;
  73
  74 static bool       g_hasDoubleClicked = FALSE;
  75
  76 //-----------------------------------------------------------------------------
  77 // idle callback for SetFirstItem
  78 //-----------------------------------------------------------------------------
  79
  80 struct wxlistbox_idle_struct
  81 {
  82     wxListBox   *m_listbox;
  83     int          m_item;
  84     gint         m_tag;
  85 };
  86
  87 static gint wxlistbox_idle_callback( gpointer gdata )
  88 {
  89     wxlistbox_idle_struct* data = (wxlistbox_idle_struct*) gdata;
  90     gdk_threads_enter();
  91
  92     gtk_idle_remove( data->m_tag );
  93
  94     data->m_listbox->SetFirstItem( data->m_item );
  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     wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, listbox->GetId() );
 272     event.SetEventObject( listbox );
 273 //    MSW doesn't do that either
 274 //    event.SetExtraLong( (long) is_selection );
 275
 276
 277     if ((listbox->GetWindowStyleFlag() & wxLB_SINGLE) != 0)
 278     {
 279         int sel = listbox->GtkGetIndex( widget );
 280
 281         if (listbox->m_prevSelection != sel)
 282             gtk_list_unselect_item( listbox->m_list, listbox->m_prevSelection );
 283
 284         listbox->m_prevSelection = sel;
 285     }
 286
 287     wxArrayInt aSelections;
 288     int n, count = listbox->GetSelections(aSelections);
 289     if ( count > 0 )
 290     {
 291         n = aSelections[0];
 292         if ( listbox->HasClientObjectData() )
 293             event.SetClientObject( listbox->GetClientObject(n) );
 294         else if ( listbox->HasClientUntypedData() )
 295             event.SetClientData( listbox->GetClientData(n) );
 296         event.SetString( listbox->GetString(n) );
 297     }
 298     else
 299     {
 300         n = -1;
 301     }
 302
 303     event.m_commandInt = n;
 304
 305 //    No longer required with new code in wxLB_SINGLE
 306 //    listbox->GetEventHandler()->AddPendingEvent( event );
 307     listbox->GetEventHandler()->ProcessEvent( event );
 308 }
 309
 310 //-----------------------------------------------------------------------------
 311 // wxListBox
 312 //-----------------------------------------------------------------------------
 313
 314 IMPLEMENT_DYNAMIC_CLASS(wxListBox,wxControl)
 315
 316 // ----------------------------------------------------------------------------
 317 // construction
 318 // ----------------------------------------------------------------------------
 319
 320 wxListBox::wxListBox()
 321 {
 322     m_list = (GtkList *) NULL;
 323 #if wxUSE_CHECKLISTBOX
 324     m_hasCheckBoxes = FALSE;
 325 #endif // wxUSE_CHECKLISTBOX
 326 }
 327
 328 bool wxListBox::Create( wxWindow *parent, wxWindowID id,
 329                         const wxPoint &pos, const wxSize &size,
 330                         int n, const wxString choices[],
 331                         long style, const wxValidator& validator,
 332                         const wxString &name )
 333 {
 334     m_needParent = TRUE;
 335     m_acceptsFocus = TRUE;
 336     m_isListBox = TRUE;
 337     m_prevSelection = 0;  // or -1 ??
 338
 339     if (!PreCreation( parent, pos, size ) ||
 340         !CreateBase( parent, id, pos, size, style, validator, name ))
 341     {
 342         wxFAIL_MSG( wxT("wxListBox creation failed") );
 343         return FALSE;
 344     }
 345
 346     m_widget = gtk_scrolled_window_new( (GtkAdjustment*) NULL, (GtkAdjustment*) NULL );
 347     if (style & wxLB_ALWAYS_SB)
 348     {
 349       gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
 350         GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS );
 351     }
 352     else
 353     {
 354       gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
 355         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 356     }
 357
 358     m_list = GTK_LIST( gtk_list_new() );
 359
 360     GtkSelectionMode mode;
 361     if (style & wxLB_MULTIPLE)
 362     {
 363         mode = GTK_SELECTION_MULTIPLE;
 364     }
 365     else if (style & wxLB_EXTENDED)
 366     {
 367         mode = GTK_SELECTION_EXTENDED;
 368     }
 369     else
 370     {
 371         // if style was 0 set single mode
 372         m_windowStyle |= wxLB_SINGLE;
 373         mode = GTK_SELECTION_MULTIPLE;
 374     }
 375
 376     gtk_list_set_selection_mode( GTK_LIST(m_list), mode );
 377
 378 #ifdef NEW_GTK_SCROLL_CODE
 379     gtk_scrolled_window_add_with_viewport( GTK_SCROLLED_WINDOW(m_widget), GTK_WIDGET(m_list) );
 380 #else
 381     gtk_container_add( GTK_CONTAINER(m_widget), GTK_WIDGET(m_list) );
 382 #endif
 383
 384     /* make list scroll when moving the focus down using cursor keys */
 385     gtk_container_set_focus_vadjustment(
 386         GTK_CONTAINER(m_list),
 387         gtk_scrolled_window_get_vadjustment(
 388             GTK_SCROLLED_WINDOW(m_widget)));
 389
 390     gtk_widget_show( GTK_WIDGET(m_list) );
 391
 392     SetBestSize( size );
 393
 394     if ( style & wxLB_SORT )
 395     {
 396         // this will change DoAppend() behaviour
 397         m_strings = new wxSortedArrayString;
 398     }
 399     else
 400     {
 401         m_strings = (wxSortedArrayString *)NULL;
 402     }
 403
 404     for (int i = 0; i < n; i++)
 405     {
 406         // add one by one
 407         DoAppend(choices[i]);
 408     }
 409
 410     m_parent->DoAddChild( this );
 411
 412     PostCreation();
 413
 414     SetBackgroundColour( wxSystemSettings::GetSystemColour( wxSYS_COLOUR_LISTBOX ) );
 415     SetForegroundColour( parent->GetForegroundColour() );
 416     SetFont( parent->GetFont() );
 417
 418     Show( TRUE );
 419
 420     return TRUE;
 421 }
 422
 423 wxListBox::~wxListBox()
 424 {
 425     m_hasVMT = FALSE;
 426
 427     Clear();
 428
 429     if (m_strings)
 430       delete m_strings;
 431 }
 432
 433 void wxListBox::DoInsertItems(const wxArrayString& items, int pos)
 434 {
 435     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 436
 437     // VZ: notice that InsertItems knows nothing about sorting, so calling it
 438     //     from outside (and not from our own Append) is likely to break
 439     //     everything
 440
 441     // code elsewhere supposes we have as many items in m_clientList as items
 442     // in the listbox
 443     wxASSERT_MSG( m_clientList.GetCount() == (size_t)GetCount(),
 444                   wxT("bug in client data management") );
 445
 446     GList *children = m_list->children;
 447     int length = g_list_length(children);
 448
 449     wxCHECK_RET( pos <= length, wxT("invalid index in wxListBox::InsertItems") );
 450
 451     size_t nItems = items.GetCount();
 452     int index;
 453
 454     if (m_strings)
 455     {
 456         for (size_t n = 0; n < nItems; n++)
 457         {
 458             index = m_strings->Add( items[n] );
 459
 460             if (index != GetCount())
 461             {
 462                 GtkAddItem( items[n], index );
 463                 wxNode *node = m_clientList.Nth( index );
 464                 m_clientList.Insert( node, (wxObject*) NULL );
 465             }
 466             else
 467             {
 468                 GtkAddItem( items[n] );
 469                 m_clientList.Append( (wxObject*) NULL );
 470             }
 471         }
 472     }
 473     else
 474     {
 475         if (pos == length)
 476         {
 477             for ( size_t n = 0; n < nItems; n++ )
 478             {
 479                 GtkAddItem( items[n] );
 480
 481                 m_clientList.Append((wxObject *)NULL);
 482             }
 483         }
 484         else
 485         {
 486             wxNode *node = m_clientList.Nth( pos );
 487             for ( size_t n = 0; n < nItems; n++ )
 488             {
 489                 GtkAddItem( items[n], pos+n );
 490
 491                 m_clientList.Insert( node, (wxObject *)NULL );
 492             }
 493         }
 494     }
 495
 496     wxASSERT_MSG( m_clientList.GetCount() == (size_t)GetCount(),
 497                       wxT("bug in client data management") );
 498 }
 499
 500 int wxListBox::DoAppend( const wxString& item )
 501 {
 502     if (m_strings)
 503     {
 504         // need to determine the index
 505         int index = m_strings->Add( item );
 506
 507         // only if not at the end anyway
 508         if (index != GetCount())
 509         {
 510            GtkAddItem( item, index );
 511
 512            wxNode *node = m_clientList.Nth( index );
 513            m_clientList.Insert( node, (wxObject *)NULL );
 514
 515            return index;
 516         }
 517     }
 518
 519     GtkAddItem(item);
 520
 521     m_clientList.Append((wxObject *)NULL);
 522
 523     return GetCount() - 1;
 524 }
 525
 526 void wxListBox::GtkAddItem( const wxString &item, int pos )
 527 {
 528     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 529
 530     GtkWidget *list_item;
 531
 532     wxString label(item);
 533 #if wxUSE_CHECKLISTBOX
 534     if (m_hasCheckBoxes)
 535     {
 536         label.Prepend(wxCHECKLBOX_STRING);
 537     }
 538 #endif // wxUSE_CHECKLISTBOX
 539
 540     list_item = gtk_list_item_new_with_label( label.mbc_str() );
 541
 542     GList *gitem_list = g_list_alloc ();
 543     gitem_list->data = list_item;
 544
 545     if (pos == -1)
 546         gtk_list_append_items( GTK_LIST (m_list), gitem_list );
 547     else
 548         gtk_list_insert_items( GTK_LIST (m_list), gitem_list, pos );
 549
 550     gtk_signal_connect( GTK_OBJECT(list_item), "select",
 551       GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 552
 553     if (HasFlag(wxLB_MULTIPLE) || HasFlag(wxLB_EXTENDED))
 554         gtk_signal_connect( GTK_OBJECT(list_item), "deselect",
 555           GTK_SIGNAL_FUNC(gtk_listitem_deselect_callback), (gpointer)this );
 556
 557     gtk_signal_connect( GTK_OBJECT(list_item),
 558                         "button_press_event",
 559                         (GtkSignalFunc)gtk_listbox_button_press_callback,
 560                         (gpointer) this );
 561
 562     gtk_signal_connect_after( GTK_OBJECT(list_item),
 563                         "button_release_event",
 564                         (GtkSignalFunc)gtk_listbox_button_release_callback,
 565                         (gpointer) this );
 566
 567     gtk_signal_connect( GTK_OBJECT(list_item),
 568                            "key_press_event",
 569                            (GtkSignalFunc)gtk_listbox_key_press_callback,
 570                            (gpointer)this );
 571
 572     ConnectWidget( list_item );
 573
 574     gtk_widget_show( list_item );
 575
 576     if (GTK_WIDGET_REALIZED(m_widget))
 577     {
 578         gtk_widget_realize( list_item );
 579         gtk_widget_realize( GTK_BIN(list_item)->child );
 580
 581         // Apply current widget style to the new list_item
 582         if (m_widgetStyle)
 583         {
 584             gtk_widget_set_style( GTK_WIDGET( list_item ), m_widgetStyle );
 585             GtkBin *bin = GTK_BIN( list_item );
 586             GtkWidget *label = GTK_WIDGET( bin->child );
 587             gtk_widget_set_style( label, m_widgetStyle );
 588         }
 589
 590 #if wxUSE_TOOLTIPS
 591         if (m_tooltip) m_tooltip->Apply( this );
 592 #endif
 593     }
 594 }
 595
 596 void wxListBox::DoSetItems( const wxArrayString& items,
 597                             void **clientData)
 598 {
 599     Clear();
 600
 601     DoInsertItems(items, 0);
 602
 603     if ( clientData )
 604     {
 605         size_t count = items.GetCount();
 606         for ( size_t n = 0; n < count; n++ )
 607         {
 608             SetClientData(n, clientData[n]);
 609         }
 610     }
 611 }
 612
 613 // ----------------------------------------------------------------------------
 614 // client data
 615 // ----------------------------------------------------------------------------
 616
 617 void wxListBox::DoSetItemClientData( int n, void* clientData )
 618 {
 619     wxCHECK_RET( m_widget != NULL, wxT("invalid listbox control") );
 620
 621     wxNode *node = m_clientList.Nth( n );
 622     wxCHECK_RET( node, wxT("invalid index in wxListBox::DoSetItemClientData") );
 623
 624     node->SetData( (wxObject*) clientData );
 625 }
 626
 627 void* wxListBox::DoGetItemClientData( int n ) const
 628 {
 629     wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid listbox control") );
 630
 631     wxNode *node = m_clientList.Nth( n );
 632     wxCHECK_MSG( node, NULL, wxT("invalid index in wxListBox::DoGetItemClientData") );
 633
 634     return node->Data();
 635 }
 636
 637 void wxListBox::DoSetItemClientObject( int n, wxClientData* clientData )
 638 {
 639     wxCHECK_RET( m_widget != NULL, wxT("invalid listbox control") );
 640
 641     wxNode *node = m_clientList.Nth( n );
 642     wxCHECK_RET( node, wxT("invalid index in wxListBox::DoSetItemClientObject") );
 643
 644     wxClientData *cd = (wxClientData*) node->Data();
 645     delete cd;
 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 ( HasClientObjectData() )
 668     {
 669         // destroy the data (due to Robert's idea of using wxList<wxObject>
 670         // and not wxList<wxClientData> we can't just say
 671         // m_clientList.DeleteContents(TRUE) - this would crash!
 672         wxNode *node = m_clientList.First();
 673         while ( node )
 674         {
 675             delete (wxClientData *)node->Data();
 676             node = node->Next();
 677         }
 678     }
 679     m_clientList.Clear();
 680
 681     if ( m_strings )
 682         m_strings->Clear();
 683 }
 684
 685 void wxListBox::Delete( int n )
 686 {
 687     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 688
 689     GList *child = g_list_nth( m_list->children, n );
 690
 691     wxCHECK_RET( child, wxT("wrong listbox index") );
 692
 693     GList *list = g_list_append( (GList*) NULL, child->data );
 694     gtk_list_remove_items( m_list, list );
 695     g_list_free( list );
 696
 697     wxNode *node = m_clientList.Nth( n );
 698     if ( node )
 699     {
 700         if ( m_clientDataItemsType == wxClientData_Object )
 701         {
 702             wxClientData *cd = (wxClientData*)node->Data();
 703             delete cd;
 704         }
 705
 706         m_clientList.DeleteNode( node );
 707     }
 708
 709     if ( m_strings )
 710         m_strings->Remove(n);
 711 }
 712
 713 // ----------------------------------------------------------------------------
 714 // string list access
 715 // ----------------------------------------------------------------------------
 716
 717 void wxListBox::SetString( int n, const wxString &string )
 718 {
 719     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 720
 721     GList *child = g_list_nth( m_list->children, n );
 722     if (child)
 723     {
 724         GtkBin *bin = GTK_BIN( child->data );
 725         GtkLabel *label = GTK_LABEL( bin->child );
 726
 727         wxString str;
 728 #if wxUSE_CHECKLISTBOX
 729         if (m_hasCheckBoxes)
 730             str += wxCHECKLBOX_STRING;
 731 #endif // wxUSE_CHECKLISTBOX
 732         str += string;
 733
 734         gtk_label_set( label, str.mbc_str() );
 735     }
 736     else
 737     {
 738         wxFAIL_MSG(wxT("wrong listbox index"));
 739     }
 740 }
 741
 742 wxString wxListBox::GetString( int n ) const
 743 {
 744     wxCHECK_MSG( m_list != NULL, wxT(""), wxT("invalid listbox") );
 745
 746     GList *child = g_list_nth( m_list->children, n );
 747     if (child)
 748     {
 749         GtkBin *bin = GTK_BIN( child->data );
 750         GtkLabel *label = GTK_LABEL( bin->child );
 751
 752         wxString str = wxString(GET_REAL_LABEL(label->label),*wxConvCurrent);
 753
 754         return str;
 755     }
 756
 757     wxFAIL_MSG(wxT("wrong listbox index"));
 758
 759     return wxT("");
 760 }
 761
 762 int wxListBox::GetCount() const
 763 {
 764     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 765
 766     GList *children = m_list->children;
 767     return g_list_length(children);
 768 }
 769
 770 int wxListBox::FindString( const wxString &item ) const
 771 {
 772     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 773
 774     GList *child = m_list->children;
 775     int count = 0;
 776     while (child)
 777     {
 778         GtkBin *bin = GTK_BIN( child->data );
 779         GtkLabel *label = GTK_LABEL( bin->child );
 780
 781         wxString str = wxString(GET_REAL_LABEL(label->label),*wxConvCurrent);
 782
 783         if (str == item)
 784             return count;
 785
 786         count++;
 787         child = child->next;
 788     }
 789
 790     // it's not an error if the string is not found -> no wxCHECK
 791
 792     return wxNOT_FOUND;
 793 }
 794
 795 // ----------------------------------------------------------------------------
 796 // selection
 797 // ----------------------------------------------------------------------------
 798
 799 int wxListBox::GetSelection() const
 800 {
 801     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 802
 803     GList *child = m_list->children;
 804     int count = 0;
 805     while (child)
 806     {
 807         if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED) return count;
 808         count++;
 809         child = child->next;
 810     }
 811     return -1;
 812 }
 813
 814 int wxListBox::GetSelections( wxArrayInt& aSelections ) const
 815 {
 816     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 817
 818     // get the number of selected items first
 819     GList *child = m_list->children;
 820     int count = 0;
 821     for (child = m_list->children; child != NULL; child = child->next)
 822     {
 823         if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED)
 824             count++;
 825     }
 826
 827     aSelections.Empty();
 828
 829     if (count > 0)
 830     {
 831         // now fill the list
 832         aSelections.Alloc(count); // optimization attempt
 833         int i = 0;
 834         for (child = m_list->children; child != NULL; child = child->next, i++)
 835         {
 836             if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED)
 837                  aSelections.Add(i);
 838         }
 839     }
 840
 841     return count;
 842 }
 843
 844 bool wxListBox::IsSelected( int n ) const
 845 {
 846     wxCHECK_MSG( m_list != NULL, FALSE, wxT("invalid listbox") );
 847
 848     GList *target = g_list_nth( m_list->children, n );
 849
 850     wxCHECK_MSG( target, FALSE, wxT("invalid listbox index") );
 851
 852     return (GTK_WIDGET(target->data)->state == GTK_STATE_SELECTED) ;
 853 }
 854
 855 void wxListBox::SetSelection( int n, bool select )
 856 {
 857     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 858
 859     GtkDisableEvents();
 860
 861     if (select)
 862     {
 863         if ((m_windowStyle & wxLB_SINGLE) != 0)
 864             gtk_list_unselect_item( m_list, m_prevSelection );
 865         gtk_list_select_item( m_list, n );
 866         m_prevSelection = n;
 867     }
 868     else
 869         gtk_list_unselect_item( m_list, n );
 870
 871     GtkEnableEvents();
 872 }
 873
 874 void wxListBox::DoSetFirstItem( int n )
 875 {
 876     wxCHECK_RET( m_list, wxT("invalid listbox") );
 877
 878     if (gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (m_list))
 879         return;
 880
 881     // terribly efficient
 882     const gchar *vadjustment_key = "gtk-vadjustment";
 883     guint vadjustment_key_id = g_quark_from_static_string (vadjustment_key);
 884
 885     GtkAdjustment *adjustment =
 886        (GtkAdjustment*) gtk_object_get_data_by_id (GTK_OBJECT (m_list), vadjustment_key_id);
 887     wxCHECK_RET( adjustment, wxT("invalid listbox code") );
 888
 889     GList *target = g_list_nth( m_list->children, n );
 890     wxCHECK_RET( target, wxT("invalid listbox index") );
 891
 892     GtkWidget *item = GTK_WIDGET(target->data);
 893     wxCHECK_RET( item, wxT("invalid listbox code") );
 894
 895     if (item->allocation.y == -1)
 896     {
 897         wxlistbox_idle_struct* data = new wxlistbox_idle_struct;
 898         data->m_listbox = this;
 899         data->m_item = n;
 900         data->m_tag = gtk_idle_add_priority( 800, wxlistbox_idle_callback, (gpointer) data );
 901
 902         return;
 903     }
 904
 905     float y = item->allocation.y;
 906     if (y > adjustment->upper - adjustment->page_size)
 907         y = adjustment->upper - adjustment->page_size;
 908         gtk_adjustment_set_value( adjustment, y );
 909 }
 910
 911 // ----------------------------------------------------------------------------
 912 // helpers
 913 // ----------------------------------------------------------------------------
 914
 915 int wxListBox::GtkGetIndex( GtkWidget *item ) const
 916 {
 917     if (item)
 918     {
 919         GList *child = m_list->children;
 920         int count = 0;
 921         while (child)
 922         {
 923             if (GTK_WIDGET(child->data) == item) return count;
 924             count++;
 925             child = child->next;
 926         }
 927     }
 928     return -1;
 929 }
 930
 931 #if wxUSE_TOOLTIPS
 932 void wxListBox::ApplyToolTip( GtkTooltips *tips, const wxChar *tip )
 933 {
 934     GList *child = m_list->children;
 935     while (child)
 936     {
 937         gtk_tooltips_set_tip( tips, GTK_WIDGET( child->data ), wxConvCurrent->cWX2MB(tip), (gchar*) NULL );
 938         child = child->next;
 939     }
 940 }
 941 #endif // wxUSE_TOOLTIPS
 942
 943 void wxListBox::GtkDisableEvents()
 944 {
 945     GList *child = m_list->children;
 946     while (child)
 947     {
 948         gtk_signal_disconnect_by_func( GTK_OBJECT(child->data),
 949           GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 950
 951         if (HasFlag(wxLB_MULTIPLE) || HasFlag(wxLB_EXTENDED))
 952             gtk_signal_disconnect_by_func( GTK_OBJECT(child->data),
 953               GTK_SIGNAL_FUNC(gtk_listitem_deselect_callback), (gpointer)this );
 954
 955         child = child->next;
 956     }
 957 }
 958
 959 void wxListBox::GtkEnableEvents()
 960 {
 961     GList *child = m_list->children;
 962     while (child)
 963     {
 964         gtk_signal_connect( GTK_OBJECT(child->data), "select",
 965           GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 966
 967         if (HasFlag(wxLB_MULTIPLE) || HasFlag(wxLB_EXTENDED))
 968             gtk_signal_connect( GTK_OBJECT(child->data), "deselect",
 969               GTK_SIGNAL_FUNC(gtk_listitem_deselect_callback), (gpointer)this );
 970
 971         child = child->next;
 972     }
 973 }
 974
 975 GtkWidget *wxListBox::GetConnectWidget()
 976 {
 977     return GTK_WIDGET(m_list);
 978 }
 979
 980 bool wxListBox::IsOwnGtkWindow( GdkWindow *window )
 981 {
 982     if (GTK_WIDGET(m_list)->window == window) return TRUE;
 983
 984     GList *child = m_list->children;
 985     while (child)
 986     {
 987         GtkWidget *bin = GTK_WIDGET( child->data );
 988         if (bin->window == window) return TRUE;
 989         child = child->next;
 990     }
 991
 992     return FALSE;
 993 }
 994
 995 void wxListBox::ApplyWidgetStyle()
 996 {
 997     SetWidgetStyle();
 998
 999     if (m_backgroundColour.Ok())
1000     {
1001         GdkWindow *window = GTK_WIDGET(m_list)->window;
1002         if ( window )
1003         {
1004             m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1005             gdk_window_set_background( window, m_backgroundColour.GetColor() );
1006             gdk_window_clear( window );
1007         }
1008     }
1009
1010     GList *child = m_list->children;
1011     while (child)
1012     {
1013         gtk_widget_set_style( GTK_WIDGET(child->data), m_widgetStyle );
1014
1015         GtkBin *bin = GTK_BIN( child->data );
1016         GtkWidget *label = GTK_WIDGET( bin->child );
1017         gtk_widget_set_style( label, m_widgetStyle );
1018
1019         child = child->next;
1020     }
1021 }
1022
1023 void wxListBox::OnInternalIdle()
1024 {
1025     wxCursor cursor = m_cursor;
1026     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1027
1028     if (GTK_WIDGET(m_list)->window && cursor.Ok())
1029     {
1030         /* I now set the cursor the anew in every OnInternalIdle call
1031            as setting the cursor in a parent window also effects the
1032            windows above so that checking for the current cursor is
1033            not possible. */
1034
1035         gdk_window_set_cursor( GTK_WIDGET(m_list)->window, cursor.GetCursor() );
1036
1037         GList *child = m_list->children;
1038         while (child)
1039         {
1040             GtkBin *bin = GTK_BIN( child->data );
1041             GtkWidget *label = GTK_WIDGET( bin->child );
1042
1043             if (!label->window)
1044                 break;
1045             else
1046                 gdk_window_set_cursor( label->window, cursor.GetCursor() );
1047
1048             child = child->next;
1049         }
1050     }
1051
1052     UpdateWindowUI();
1053 }
1054
1055 wxSize wxListBox::DoGetBestSize() const
1056 {
1057     int lbWidth = 100;  // some defaults
1058     int lbHeight = 110;
1059     int wLine;
1060
1061     // Find the widest line
1062     for(int i = 0; i < GetCount(); i++) {
1063         wxString str(GetString(i));
1064         GetTextExtent(str, &wLine, NULL);
1065         lbWidth = wxMax(lbWidth, wLine);
1066     }
1067
1068     // Add room for the scrollbar
1069     lbWidth += wxSystemSettings::GetSystemMetric(wxSYS_VSCROLL_X);
1070
1071     // And just a bit more
1072     int cx, cy;
1073     GetTextExtent("X", &cx, &cy);
1074     lbWidth += 3 * cx;
1075
1076     // don't make the listbox too tall (limit height to around 10 items) but don't
1077     // make it too small neither
1078     lbHeight = (cy+4) * wxMin(wxMax(GetCount(), 3), 10);
1079
1080     return wxSize(lbWidth, lbHeight);
1081 }
1082
1083 #endif