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