src/gtk1/listbox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        listbox.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11 #ifdef __GNUG__
  12 #pragma implementation "listbox.h"
  13 #endif
  14
  15 #include "wx/listbox.h"
  16
  17 #if wxUSE_LISTBOX
  18
  19 #include "wx/dynarray.h"
  20 #include "wx/utils.h"
  21 #include "wx/intl.h"
  22 #include "wx/checklst.h"
  23 #include "wx/settings.h"
  24
  25 #if wxUSE_TOOLTIPS
  26 #include "wx/tooltip.h"
  27 #endif
  28
  29 # 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 #define CHECKBOX_STRING "[-] "
  55
  56 // checklistboxes have "[±] " prepended to their lables, this macro removes it
  57 // (NB: 4 below is the length of CHECKBOX_STRING above)
  58 //
  59 // the argument to it is a "const char *" pointer
  60 #define GET_REAL_LABEL(label) ((m_hasCheckBoxes)?(label)+4 : (label))
  61
  62 #else // !wxUSE_CHECKLISTBOX
  63
  64 #define GET_REAL_LABEL(label) (label)
  65
  66 #endif // wxUSE_CHECKLISTBOX
  67
  68 //-----------------------------------------------------------------------------
  69 // data
  70 //-----------------------------------------------------------------------------
  71
  72 extern bool       g_blockEventsOnDrag;
  73 extern bool       g_blockEventsOnScroll;
  74 extern wxCursor   g_globalCursor;
  75
  76 static bool       g_hasDoubleClicked = FALSE;
  77
  78 //-----------------------------------------------------------------------------
  79 // "button_release_event"
  80 //-----------------------------------------------------------------------------
  81
  82 /* we would normally emit a wxEVT_COMMAND_LISTBOX_DOUBLECLICKED event once
  83    a GDK_2BUTTON_PRESS occurs, but this has the particular problem of the
  84    listbox keeping the focus until it receives a GDK_BUTTON_RELEASE event.
  85    this can lead to race conditions so that we emit the dclick event
  86    after the GDK_BUTTON_RELEASE event after the GDK_2BUTTON_PRESS event */
  87
  88 static gint
  89 gtk_listbox_button_release_callback( GtkWidget * WXUNUSED(widget),
  90                                      GdkEventButton * WXUNUSED(gdk_event),
  91                                      wxListBox *listbox )
  92 {
  93     if (g_isIdle) wxapp_install_idle_handler();
  94
  95     if (g_blockEventsOnDrag) return FALSE;
  96     if (g_blockEventsOnScroll) return FALSE;
  97
  98     if (!listbox->m_hasVMT) return FALSE;
  99
 100     if (!g_hasDoubleClicked) return FALSE;
 101
 102     wxCommandEvent event( wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, listbox->GetId() );
 103     event.SetEventObject( listbox );
 104
 105     wxArrayInt aSelections;
 106     int n, count = listbox->GetSelections(aSelections);
 107     if ( count > 0 )
 108     {
 109         n = aSelections[0];
 110         if ( listbox->HasClientObjectData() )
 111             event.SetClientObject( listbox->GetClientObject(n) );
 112         else if ( listbox->HasClientUntypedData() )
 113             event.SetClientData( listbox->GetClientData(n) );
 114         event.SetString( listbox->GetString(n) );
 115     }
 116     else
 117     {
 118         n = -1;
 119     }
 120
 121     event.m_commandInt = n;
 122
 123     listbox->GetEventHandler()->ProcessEvent( event );
 124
 125     return FALSE;
 126 }
 127
 128 //-----------------------------------------------------------------------------
 129 // "button_press_event"
 130 //-----------------------------------------------------------------------------
 131
 132 static gint
 133 gtk_listbox_button_press_callback( GtkWidget *widget,
 134                                    GdkEventButton *gdk_event,
 135                                    wxListBox *listbox )
 136 {
 137     if (g_isIdle) wxapp_install_idle_handler();
 138
 139     if (g_blockEventsOnDrag) return FALSE;
 140     if (g_blockEventsOnScroll) return FALSE;
 141
 142     if (!listbox->m_hasVMT) return FALSE;
 143
 144     int sel = listbox->GtkGetIndex( widget );
 145
 146 #if wxUSE_CHECKLISTBOX
 147     if ((listbox->m_hasCheckBoxes) && (gdk_event->x < 15) && (gdk_event->type != GDK_2BUTTON_PRESS))
 148     {
 149         wxCheckListBox *clb = (wxCheckListBox *)listbox;
 150
 151         clb->Check( sel, !clb->IsChecked(sel) );
 152
 153         wxCommandEvent event( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, listbox->GetId() );
 154         event.SetEventObject( listbox );
 155         event.SetInt( sel );
 156         listbox->GetEventHandler()->ProcessEvent( event );
 157     }
 158 #endif // wxUSE_CHECKLISTBOX
 159
 160     /* emit wxEVT_COMMAND_LISTBOX_DOUBLECLICKED later */
 161     g_hasDoubleClicked = (gdk_event->type == GDK_2BUTTON_PRESS);
 162
 163     return FALSE;
 164 }
 165
 166 //-----------------------------------------------------------------------------
 167 // "key_press_event"
 168 //-----------------------------------------------------------------------------
 169
 170 static gint
 171 gtk_listbox_key_press_callback( GtkWidget *widget, GdkEventKey *gdk_event, wxListBox *listbox )
 172 {
 173     if (g_isIdle)
 174         wxapp_install_idle_handler();
 175
 176     if (g_blockEventsOnDrag)
 177         return FALSE;
 178
 179     bool ret = FALSE;
 180
 181     if ((gdk_event->keyval == GDK_Tab) || (gdk_event->keyval == GDK_ISO_Left_Tab))
 182     {
 183         wxNavigationKeyEvent new_event;
 184         /* GDK reports GDK_ISO_Left_Tab for SHIFT-TAB */
 185         new_event.SetDirection( (gdk_event->keyval == GDK_Tab) );
 186         /* CTRL-TAB changes the (parent) window, i.e. switch notebook page */
 187         new_event.SetWindowChange( (gdk_event->state & GDK_CONTROL_MASK) );
 188         new_event.SetCurrentFocus( listbox );
 189         ret = listbox->GetEventHandler()->ProcessEvent( new_event );
 190     }
 191
 192 #if wxUSE_CHECKLISTBOX
 193     if ((gdk_event->keyval == ' ') && (listbox->m_hasCheckBoxes) && (!ret))
 194     {
 195         int sel = listbox->GtkGetIndex( widget );
 196
 197         wxCheckListBox *clb = (wxCheckListBox *)listbox;
 198
 199         clb->Check( sel, !clb->IsChecked(sel) );
 200
 201         wxCommandEvent new_event( wxEVT_COMMAND_CHECKLISTBOX_TOGGLED, listbox->GetId() );
 202         new_event.SetEventObject( listbox );
 203         new_event.SetInt( sel );
 204         ret = listbox->GetEventHandler()->ProcessEvent( new_event );
 205     }
 206 #endif // wxUSE_CHECKLISTBOX
 207
 208     if (ret)
 209     {
 210         gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "key_press_event" );
 211         return TRUE;
 212     }
 213
 214     return FALSE;
 215 }
 216
 217 //-----------------------------------------------------------------------------
 218 // "select" and "deselect"
 219 //-----------------------------------------------------------------------------
 220
 221 static void gtk_listitem_select_callback( GtkWidget *WXUNUSED(widget), wxListBox *listbox );
 222
 223 static void gtk_listitem_deselect_callback( GtkWidget *widget, wxListBox *listbox )
 224 {
 225     gtk_listitem_select_callback( widget, listbox );
 226 }
 227
 228 static void gtk_listitem_select_callback( GtkWidget *WXUNUSED(widget), wxListBox *listbox )
 229 {
 230     if (g_isIdle) wxapp_install_idle_handler();
 231
 232     if (!listbox->m_hasVMT) return;
 233     if (g_blockEventsOnDrag) return;
 234
 235     wxCommandEvent event(wxEVT_COMMAND_LISTBOX_SELECTED, listbox->GetId() );
 236     event.SetEventObject( listbox );
 237
 238     wxArrayInt aSelections;
 239     int n, count = listbox->GetSelections(aSelections);
 240     if ( count > 0 )
 241     {
 242         n = aSelections[0];
 243         if ( listbox->HasClientObjectData() )
 244             event.SetClientObject( listbox->GetClientObject(n) );
 245         else if ( listbox->HasClientUntypedData() )
 246             event.SetClientData( listbox->GetClientData(n) );
 247         event.SetString( listbox->GetString(n) );
 248     }
 249     else
 250     {
 251         n = -1;
 252     }
 253
 254     event.m_commandInt = n;
 255
 256     listbox->GetEventHandler()->AddPendingEvent( event );
 257 //    listbox->GetEventHandler()->ProcessEvent( event );
 258 }
 259
 260 //-----------------------------------------------------------------------------
 261 // wxListBox
 262 //-----------------------------------------------------------------------------
 263
 264 IMPLEMENT_DYNAMIC_CLASS(wxListBox,wxControl)
 265
 266 // ----------------------------------------------------------------------------
 267 // construction
 268 // ----------------------------------------------------------------------------
 269
 270 wxListBox::wxListBox()
 271 {
 272     m_list = (GtkList *) NULL;
 273 #if wxUSE_CHECKLISTBOX
 274     m_hasCheckBoxes = FALSE;
 275 #endif // wxUSE_CHECKLISTBOX
 276 }
 277
 278 bool wxListBox::Create( wxWindow *parent, wxWindowID id,
 279                         const wxPoint &pos, const wxSize &size,
 280                         int n, const wxString choices[],
 281                         long style, const wxValidator& validator,
 282                         const wxString &name )
 283 {
 284     m_needParent = TRUE;
 285     m_acceptsFocus = TRUE;
 286
 287     if (!PreCreation( parent, pos, size ) ||
 288         !CreateBase( parent, id, pos, size, style, validator, name ))
 289     {
 290         wxFAIL_MSG( wxT("wxListBox creation failed") );
 291         return FALSE;
 292     }
 293
 294     m_widget = gtk_scrolled_window_new( (GtkAdjustment*) NULL, (GtkAdjustment*) NULL );
 295     if (style & wxLB_ALWAYS_SB)
 296     {
 297       gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
 298         GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS );
 299     }
 300     else
 301     {
 302       gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
 303         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 304     }
 305
 306     m_list = GTK_LIST( gtk_list_new() );
 307
 308     GtkSelectionMode mode = GTK_SELECTION_BROWSE;
 309     if (style & wxLB_MULTIPLE)
 310         mode = GTK_SELECTION_MULTIPLE;
 311     else if (style & wxLB_EXTENDED)
 312         mode = GTK_SELECTION_EXTENDED;
 313
 314     gtk_list_set_selection_mode( GTK_LIST(m_list), mode );
 315
 316 #ifdef NEW_GTK_SCROLL_CODE
 317     gtk_scrolled_window_add_with_viewport( GTK_SCROLLED_WINDOW(m_widget), GTK_WIDGET(m_list) );
 318 #else
 319     gtk_container_add( GTK_CONTAINER(m_widget), GTK_WIDGET(m_list) );
 320 #endif
 321
 322     /* make list scroll when moving the focus down using cursor keys */
 323     gtk_container_set_focus_vadjustment(
 324         GTK_CONTAINER(m_list),
 325         gtk_scrolled_window_get_vadjustment(
 326             GTK_SCROLLED_WINDOW(m_widget)));
 327
 328     gtk_widget_show( GTK_WIDGET(m_list) );
 329
 330     SetSizeOrDefault( size );
 331
 332     if ( style & wxLB_SORT )
 333     {
 334         // this will change DoAppend() behaviour
 335         m_strings = new wxSortedArrayString;
 336     }
 337     else
 338     {
 339         m_strings = (wxSortedArrayString *)NULL;
 340     }
 341
 342     for (int i = 0; i < n; i++)
 343     {
 344         // add one by one
 345         DoAppend(choices[i]);
 346     }
 347
 348     m_parent->DoAddChild( this );
 349
 350     PostCreation();
 351
 352     SetBackgroundColour( wxSystemSettings::GetSystemColour( wxSYS_COLOUR_LISTBOX ) );
 353     SetForegroundColour( parent->GetForegroundColour() );
 354     SetFont( parent->GetFont() );
 355
 356     Show( TRUE );
 357
 358     return TRUE;
 359 }
 360
 361 wxListBox::~wxListBox()
 362 {
 363     Clear();
 364     if (m_strings)
 365       delete m_strings;
 366 }
 367
 368 void wxListBox::DoInsertItems(const wxArrayString& items, int pos)
 369 {
 370     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 371
 372     // VZ: notice that InsertItems knows nothing about sorting, so calling it
 373     //     from outside (and not from our own Append) is likely to break
 374     //     everything
 375
 376     // code elsewhere supposes we have as many items in m_clientList as items
 377     // in the listbox
 378     wxASSERT_MSG( m_clientList.GetCount() == (size_t)GetCount(),
 379                   wxT("bug in client data management") );
 380
 381     GList *children = m_list->children;
 382     int length = g_list_length(children);
 383
 384     wxCHECK_RET( pos <= length, wxT("invalid index in wxListBox::InsertItems") );
 385
 386     size_t nItems = items.GetCount();
 387
 388     if (pos == length)
 389     {
 390         for ( size_t n = 0; n < nItems; n++ )
 391         {
 392             GtkAddItem( items[n] );
 393
 394             m_clientList.Append((wxObject *)NULL);
 395         }
 396     }
 397     else
 398     {
 399         wxNode *node = m_clientList.Nth( pos );
 400         for ( size_t n = 0; n < nItems; n++ )
 401         {
 402             GtkAddItem( items[n], pos+n );
 403
 404             m_clientList.Insert( node, (wxObject *)NULL );
 405         }
 406     }
 407
 408     wxASSERT_MSG( m_clientList.GetCount() == (size_t)GetCount(),
 409                       wxT("bug in client data management") );
 410 }
 411
 412 int wxListBox::DoAppend( const wxString& item )
 413 {
 414     if (m_strings)
 415     {
 416         // need to determine the index
 417         int index = m_strings->Add( item );
 418
 419         // only if not at the end anyway
 420         if (index != GetCount())
 421         {
 422            GtkAddItem( item, index );
 423
 424            wxNode *node = m_clientList.Nth( index );
 425            m_clientList.Insert( node, (wxObject *)NULL );
 426
 427            return index;
 428         }
 429     }
 430
 431     GtkAddItem(item);
 432
 433     m_clientList.Append((wxObject *)NULL);
 434
 435     return GetCount() - 1;
 436 }
 437
 438 void wxListBox::GtkAddItem( const wxString &item, int pos )
 439 {
 440     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 441
 442     GtkWidget *list_item;
 443
 444     wxString label(item);
 445 #if wxUSE_CHECKLISTBOX
 446     if (m_hasCheckBoxes)
 447     {
 448         label.Prepend(CHECKBOX_STRING);
 449     }
 450 #endif // wxUSE_CHECKLISTBOX
 451
 452     list_item = gtk_list_item_new_with_label( label.mbc_str() );
 453
 454     GList *gitem_list = g_list_alloc ();
 455     gitem_list->data = list_item;
 456
 457     if (pos == -1)
 458         gtk_list_append_items( GTK_LIST (m_list), gitem_list );
 459     else
 460         gtk_list_insert_items( GTK_LIST (m_list), gitem_list, pos );
 461
 462     gtk_signal_connect( GTK_OBJECT(list_item), "select",
 463       GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 464
 465     if (HasFlag(wxLB_MULTIPLE))
 466         gtk_signal_connect( GTK_OBJECT(list_item), "deselect",
 467           GTK_SIGNAL_FUNC(gtk_listitem_deselect_callback), (gpointer)this );
 468
 469     gtk_signal_connect( GTK_OBJECT(list_item),
 470                         "button_press_event",
 471                         (GtkSignalFunc)gtk_listbox_button_press_callback,
 472                         (gpointer) this );
 473
 474     gtk_signal_connect_after( GTK_OBJECT(list_item),
 475                         "button_release_event",
 476                         (GtkSignalFunc)gtk_listbox_button_release_callback,
 477                         (gpointer) this );
 478
 479     gtk_signal_connect( GTK_OBJECT(list_item),
 480                            "key_press_event",
 481                            (GtkSignalFunc)gtk_listbox_key_press_callback,
 482                            (gpointer)this );
 483
 484     ConnectWidget( list_item );
 485
 486     gtk_widget_show( list_item );
 487
 488     if (GTK_WIDGET_REALIZED(m_widget))
 489     {
 490         gtk_widget_realize( list_item );
 491         gtk_widget_realize( GTK_BIN(list_item)->child );
 492
 493         // Apply current widget style to the new list_item
 494         if (m_widgetStyle)
 495         {
 496             gtk_widget_set_style( GTK_WIDGET( list_item ), m_widgetStyle );
 497             GtkBin *bin = GTK_BIN( list_item );
 498             GtkWidget *label = GTK_WIDGET( bin->child );
 499             gtk_widget_set_style( label, m_widgetStyle );
 500         }
 501
 502 #if wxUSE_TOOLTIPS
 503         if (m_tooltip) m_tooltip->Apply( this );
 504 #endif
 505     }
 506 }
 507
 508 void wxListBox::DoSetItems( const wxArrayString& items,
 509                             void **clientData)
 510 {
 511     Clear();
 512
 513     DoInsertItems(items, 0);
 514
 515     if ( clientData )
 516     {
 517         size_t count = items.GetCount();
 518         for ( size_t n = 0; n < count; n++ )
 519         {
 520             SetClientData(n, clientData[n]);
 521         }
 522     }
 523 }
 524
 525 // ----------------------------------------------------------------------------
 526 // client data
 527 // ----------------------------------------------------------------------------
 528
 529 void wxListBox::DoSetItemClientData( int n, void* clientData )
 530 {
 531     wxCHECK_RET( m_widget != NULL, wxT("invalid listbox control") );
 532
 533     wxNode *node = m_clientList.Nth( n );
 534     wxCHECK_RET( node, wxT("invalid index in wxListBox::DoSetItemClientData") );
 535
 536     node->SetData( (wxObject*) clientData );
 537 }
 538
 539 void* wxListBox::DoGetItemClientData( int n ) const
 540 {
 541     wxCHECK_MSG( m_widget != NULL, NULL, wxT("invalid listbox control") );
 542
 543     wxNode *node = m_clientList.Nth( n );
 544     wxCHECK_MSG( node, NULL, wxT("invalid index in wxListBox::DoGetItemClientData") );
 545
 546     return node->Data();
 547 }
 548
 549 void wxListBox::DoSetItemClientObject( int n, wxClientData* clientData )
 550 {
 551     wxCHECK_RET( m_widget != NULL, wxT("invalid listbox control") );
 552
 553     wxNode *node = m_clientList.Nth( n );
 554     wxCHECK_RET( node, wxT("invalid index in wxListBox::DoSetItemClientObject") );
 555
 556     wxClientData *cd = (wxClientData*) node->Data();
 557     delete cd;
 558
 559     node->SetData( (wxObject*) clientData );
 560 }
 561
 562 wxClientData* wxListBox::DoGetItemClientObject( int n ) const
 563 {
 564     wxCHECK_MSG( m_widget != NULL, (wxClientData*) NULL, wxT("invalid listbox control") );
 565
 566     wxNode *node = m_clientList.Nth( n );
 567     wxCHECK_MSG( node, (wxClientData *)NULL,
 568                  wxT("invalid index in wxListBox::DoGetItemClientObject") );
 569
 570     return (wxClientData*) node->Data();
 571 }
 572
 573 void wxListBox::Clear()
 574 {
 575     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 576
 577     gtk_list_clear_items( m_list, 0, Number() );
 578
 579     if ( HasClientObjectData() )
 580     {
 581         // destroy the data (due to Robert's idea of using wxList<wxObject>
 582         // and not wxList<wxClientData> we can't just say
 583         // m_clientList.DeleteContents(TRUE) - this would crash!
 584         wxNode *node = m_clientList.First();
 585         while ( node )
 586         {
 587             delete (wxClientData *)node->Data();
 588             node = node->Next();
 589         }
 590     }
 591     m_clientList.Clear();
 592
 593     if ( m_strings )
 594         m_strings->Clear();
 595 }
 596
 597 void wxListBox::Delete( int n )
 598 {
 599     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 600
 601     GList *child = g_list_nth( m_list->children, n );
 602
 603     wxCHECK_RET( child, wxT("wrong listbox index") );
 604
 605     GList *list = g_list_append( (GList*) NULL, child->data );
 606     gtk_list_remove_items( m_list, list );
 607     g_list_free( list );
 608
 609     wxNode *node = m_clientList.Nth( n );
 610     if ( node )
 611     {
 612         if ( m_clientDataItemsType == ClientData_Object )
 613         {
 614             wxClientData *cd = (wxClientData*)node->Data();
 615             delete cd;
 616         }
 617
 618         m_clientList.DeleteNode( node );
 619     }
 620
 621     if ( m_strings )
 622         m_strings->Remove(n);
 623 }
 624
 625 // ----------------------------------------------------------------------------
 626 // string list access
 627 // ----------------------------------------------------------------------------
 628
 629 void wxListBox::SetString( int n, const wxString &string )
 630 {
 631     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 632
 633     GList *child = g_list_nth( m_list->children, n );
 634     if (child)
 635     {
 636         GtkBin *bin = GTK_BIN( child->data );
 637         GtkLabel *label = GTK_LABEL( bin->child );
 638
 639         wxString str;
 640 #if wxUSE_CHECKLISTBOX
 641         if (m_hasCheckBoxes)
 642             str += CHECKBOX_STRING;
 643 #endif // wxUSE_CHECKLISTBOX
 644         str += string;
 645
 646         gtk_label_set( label, str.mbc_str() );
 647     }
 648     else
 649     {
 650         wxFAIL_MSG(wxT("wrong listbox index"));
 651     }
 652 }
 653
 654 wxString wxListBox::GetString( int n ) const
 655 {
 656     wxCHECK_MSG( m_list != NULL, wxT(""), wxT("invalid listbox") );
 657
 658     GList *child = g_list_nth( m_list->children, n );
 659     if (child)
 660     {
 661         GtkBin *bin = GTK_BIN( child->data );
 662         GtkLabel *label = GTK_LABEL( bin->child );
 663
 664         wxString str = wxString(GET_REAL_LABEL(label->label),*wxConvCurrent);
 665
 666         return str;
 667     }
 668
 669     wxFAIL_MSG(wxT("wrong listbox index"));
 670
 671     return wxT("");
 672 }
 673
 674 int wxListBox::GetCount() const
 675 {
 676     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 677
 678     GList *children = m_list->children;
 679     return g_list_length(children);
 680 }
 681
 682 int wxListBox::FindString( const wxString &item ) const
 683 {
 684     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 685
 686     GList *child = m_list->children;
 687     int count = 0;
 688     while (child)
 689     {
 690         GtkBin *bin = GTK_BIN( child->data );
 691         GtkLabel *label = GTK_LABEL( bin->child );
 692
 693         wxString str = wxString(GET_REAL_LABEL(label->label),*wxConvCurrent);
 694
 695         if (str == item)
 696             return count;
 697
 698         count++;
 699         child = child->next;
 700     }
 701
 702     // it's not an error if the string is not found -> no wxCHECK
 703
 704     return wxNOT_FOUND;
 705 }
 706
 707 // ----------------------------------------------------------------------------
 708 // selection
 709 // ----------------------------------------------------------------------------
 710
 711 int wxListBox::GetSelection() const
 712 {
 713     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 714
 715     GList *child = m_list->children;
 716     int count = 0;
 717     while (child)
 718     {
 719         if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED) return count;
 720         count++;
 721         child = child->next;
 722     }
 723     return -1;
 724 }
 725
 726 int wxListBox::GetSelections( wxArrayInt& aSelections ) const
 727 {
 728     wxCHECK_MSG( m_list != NULL, -1, wxT("invalid listbox") );
 729
 730     // get the number of selected items first
 731     GList *child = m_list->children;
 732     int count = 0;
 733     for (child = m_list->children; child != NULL; child = child->next)
 734     {
 735         if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED)
 736             count++;
 737     }
 738
 739     aSelections.Empty();
 740
 741     if (count > 0)
 742     {
 743         // now fill the list
 744         aSelections.Alloc(count); // optimization attempt
 745         int i = 0;
 746         for (child = m_list->children; child != NULL; child = child->next, i++)
 747         {
 748             if (GTK_WIDGET(child->data)->state == GTK_STATE_SELECTED)
 749                  aSelections.Add(i);
 750         }
 751     }
 752
 753     return count;
 754 }
 755
 756 bool wxListBox::IsSelected( int n ) const
 757 {
 758     wxCHECK_MSG( m_list != NULL, FALSE, wxT("invalid listbox") );
 759
 760     GList *target = g_list_nth( m_list->children, n );
 761
 762     wxCHECK_MSG( target, FALSE, wxT("invalid listbox index") );
 763
 764     return (GTK_WIDGET(target->data)->state == GTK_STATE_SELECTED) ;
 765 }
 766
 767 void wxListBox::SetSelection( int n, bool select )
 768 {
 769     wxCHECK_RET( m_list != NULL, wxT("invalid listbox") );
 770
 771     GtkDisableEvents();
 772
 773     if (select)
 774         gtk_list_select_item( m_list, n );
 775     else
 776         gtk_list_unselect_item( m_list, n );
 777
 778     GtkEnableEvents();
 779 }
 780
 781 void wxListBox::DoSetFirstItem( int n )
 782 {
 783     wxCHECK_RET( m_list, wxT("invalid listbox") );
 784
 785     if (gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (m_list))
 786         return;
 787
 788     // terribly efficient
 789     const gchar *vadjustment_key = "gtk-vadjustment";
 790     guint vadjustment_key_id = g_quark_from_static_string (vadjustment_key);
 791
 792     GtkAdjustment *adjustment =
 793        (GtkAdjustment*) gtk_object_get_data_by_id (GTK_OBJECT (m_list), vadjustment_key_id);
 794     wxCHECK_RET( adjustment, wxT("invalid listbox code") );
 795
 796     GList *target = g_list_nth( m_list->children, n );
 797     wxCHECK_RET( target, wxT("invalid listbox index") );
 798
 799     GtkWidget *item = GTK_WIDGET(target->data);
 800     wxCHECK_RET( item, wxT("invalid listbox code") );
 801
 802     // find the last item before this one which is already realized
 803     size_t nItemsBefore;
 804     for ( nItemsBefore = 0; item && (item->allocation.y == -1); nItemsBefore++ )
 805     {
 806         target = target->prev;
 807         if ( !target )
 808         {
 809             // nothing we can do if there are no allocated items yet
 810             return;
 811         }
 812
 813         item = GTK_WIDGET(target->data);
 814     }
 815
 816     gtk_adjustment_set_value(adjustment,
 817                              item->allocation.y +
 818                                 nItemsBefore*item->allocation.height);
 819 }
 820
 821 // ----------------------------------------------------------------------------
 822 // helpers
 823 // ----------------------------------------------------------------------------
 824
 825 int wxListBox::GtkGetIndex( GtkWidget *item ) const
 826 {
 827     if (item)
 828     {
 829         GList *child = m_list->children;
 830         int count = 0;
 831         while (child)
 832         {
 833             if (GTK_WIDGET(child->data) == item) return count;
 834             count++;
 835             child = child->next;
 836         }
 837     }
 838     return -1;
 839 }
 840
 841 #if wxUSE_TOOLTIPS
 842 void wxListBox::ApplyToolTip( GtkTooltips *tips, const wxChar *tip )
 843 {
 844     GList *child = m_list->children;
 845     while (child)
 846     {
 847         gtk_tooltips_set_tip( tips, GTK_WIDGET( child->data ), wxConvCurrent->cWX2MB(tip), (gchar*) NULL );
 848         child = child->next;
 849     }
 850 }
 851 #endif // wxUSE_TOOLTIPS
 852
 853 void wxListBox::GtkDisableEvents()
 854 {
 855     GList *child = m_list->children;
 856     while (child)
 857     {
 858         gtk_signal_disconnect_by_func( GTK_OBJECT(child->data),
 859           GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 860
 861         if (HasFlag(wxLB_MULTIPLE))
 862             gtk_signal_disconnect_by_func( GTK_OBJECT(child->data),
 863               GTK_SIGNAL_FUNC(gtk_listitem_deselect_callback), (gpointer)this );
 864
 865         child = child->next;
 866     }
 867 }
 868
 869 void wxListBox::GtkEnableEvents()
 870 {
 871     GList *child = m_list->children;
 872     while (child)
 873     {
 874         gtk_signal_connect( GTK_OBJECT(child->data), "select",
 875           GTK_SIGNAL_FUNC(gtk_listitem_select_callback), (gpointer)this );
 876
 877         if (HasFlag(wxLB_MULTIPLE))
 878             gtk_signal_connect( GTK_OBJECT(child->data), "deselect",
 879               GTK_SIGNAL_FUNC(gtk_listitem_deselect_callback), (gpointer)this );
 880
 881         child = child->next;
 882     }
 883 }
 884
 885 GtkWidget *wxListBox::GetConnectWidget()
 886 {
 887     return GTK_WIDGET(m_list);
 888 }
 889
 890 bool wxListBox::IsOwnGtkWindow( GdkWindow *window )
 891 {
 892     if (GTK_WIDGET(m_list)->window == window) return TRUE;
 893
 894     GList *child = m_list->children;
 895     while (child)
 896     {
 897         GtkWidget *bin = GTK_WIDGET( child->data );
 898         if (bin->window == window) return TRUE;
 899         child = child->next;
 900     }
 901
 902     return FALSE;
 903 }
 904
 905 void wxListBox::ApplyWidgetStyle()
 906 {
 907     SetWidgetStyle();
 908
 909     if (m_backgroundColour.Ok())
 910     {
 911         GdkWindow *window = GTK_WIDGET(m_list)->window;
 912         if ( window )
 913         {
 914             m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
 915             gdk_window_set_background( window, m_backgroundColour.GetColor() );
 916             gdk_window_clear( window );
 917         }
 918     }
 919
 920     GList *child = m_list->children;
 921     while (child)
 922     {
 923         gtk_widget_set_style( GTK_WIDGET(child->data), m_widgetStyle );
 924
 925         GtkBin *bin = GTK_BIN( child->data );
 926         GtkWidget *label = GTK_WIDGET( bin->child );
 927         gtk_widget_set_style( label, m_widgetStyle );
 928
 929         child = child->next;
 930     }
 931 }
 932
 933 void wxListBox::OnInternalIdle()
 934 {
 935     wxCursor cursor = m_cursor;
 936     if (g_globalCursor.Ok()) cursor = g_globalCursor;
 937
 938     if (GTK_WIDGET(m_list)->window && cursor.Ok())
 939     {
 940         /* I now set the cursor the anew in every OnInternalIdle call
 941            as setting the cursor in a parent window also effects the
 942            windows above so that checking for the current cursor is
 943            not possible. */
 944
 945         gdk_window_set_cursor( GTK_WIDGET(m_list)->window, cursor.GetCursor() );
 946
 947         GList *child = m_list->children;
 948         while (child)
 949         {
 950             GtkBin *bin = GTK_BIN( child->data );
 951             GtkWidget *label = GTK_WIDGET( bin->child );
 952
 953             if (!label->window)
 954                 break;
 955             else
 956                 gdk_window_set_cursor( label->window, cursor.GetCursor() );
 957
 958             child = child->next;
 959         }
 960     }
 961
 962     UpdateWindowUI();
 963 }
 964
 965 wxSize wxListBox::DoGetBestSize() const
 966 {
 967     return wxSize(100, 110);
 968 }
 969
 970 #endif