src/gtk/listbox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/listbox.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Modified By: Ryan Norton (GtkTreeView implementation)
   6 // Id:          $Id$
   7 // Copyright:   (c) 1998 Robert Roebling
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // For compilers that support precompilation, includes "wx.h".
  12 #include "wx/wxprec.h"
  13
  14 #if wxUSE_LISTBOX
  15
  16 #include "wx/listbox.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/dynarray.h"
  20     #include "wx/intl.h"
  21     #include "wx/log.h"
  22     #include "wx/utils.h"
  23     #include "wx/settings.h"
  24     #include "wx/checklst.h"
  25     #include "wx/arrstr.h"
  26 #endif
  27
  28 #include "wx/gtk/private.h"
  29 #include "wx/gtk/private/object.h"
  30 #include "wx/gtk/treeentry_gtk.h"
  31
  32 #if wxUSE_TOOLTIPS
  33     #include "wx/tooltip.h"
  34 #endif
  35
  36 #include <gtk/gtk.h>
  37
  38 #include <gdk/gdkkeysyms.h>
  39 #if GTK_CHECK_VERSION(3,0,0)
  40 #include <gdk/gdkkeysyms-compat.h>
  41 #endif
  42
  43 //-----------------------------------------------------------------------------
  44 // data
  45 //-----------------------------------------------------------------------------
  46
  47 extern bool           g_blockEventsOnDrag;
  48 extern bool           g_blockEventsOnScroll;
  49
  50
  51
  52 //-----------------------------------------------------------------------------
  53 // Macro to tell which row the strings are in (1 if native checklist, 0 if not)
  54 //-----------------------------------------------------------------------------
  55
  56 #if wxUSE_CHECKLISTBOX
  57 #   define WXLISTBOX_DATACOLUMN_ARG(x)  (x->m_hasCheckBoxes ? 1 : 0)
  58 #else
  59 #   define WXLISTBOX_DATACOLUMN_ARG(x)  (0)
  60 #endif // wxUSE_CHECKLISTBOX
  61
  62 #define WXLISTBOX_DATACOLUMN    WXLISTBOX_DATACOLUMN_ARG(this)
  63
  64 // ----------------------------------------------------------------------------
  65 // helper functions
  66 // ----------------------------------------------------------------------------
  67
  68 namespace
  69 {
  70
  71 // Return the entry for the given listbox item.
  72 //
  73 // Return value must be released by caller if non-NULL.
  74 GtkTreeEntry *
  75 GetEntry(GtkListStore *store, GtkTreeIter *iter, const wxListBox *listbox)
  76 {
  77     GtkTreeEntry* entry;
  78     gtk_tree_model_get(GTK_TREE_MODEL(store),
  79                        iter,
  80                        WXLISTBOX_DATACOLUMN_ARG(listbox),
  81                        &entry,
  82                        -1);
  83
  84     return entry;
  85 }
  86
  87 } // anonymous namespace
  88
  89 //-----------------------------------------------------------------------------
  90 // "row-activated"
  91 //-----------------------------------------------------------------------------
  92
  93 extern "C" {
  94 static void
  95 gtk_listbox_row_activated_callback(GtkTreeView        * WXUNUSED(treeview),
  96                                    GtkTreePath        *path,
  97                                    GtkTreeViewColumn  * WXUNUSED(col),
  98                                    wxListBox          *listbox)
  99 {
 100     if (g_blockEventsOnDrag) return;
 101     if (g_blockEventsOnScroll) return;
 102
 103     // This is triggered by either a double-click or a space press
 104
 105     int sel = gtk_tree_path_get_indices(path)[0];
 106
 107     listbox->GTKOnActivated(sel);
 108 }
 109 }
 110
 111 //-----------------------------------------------------------------------------
 112 // "changed"
 113 //-----------------------------------------------------------------------------
 114
 115 extern "C" {
 116 static void
 117 gtk_listitem_changed_callback(GtkTreeSelection * WXUNUSED(selection),
 118                               wxListBox *listbox )
 119 {
 120     if (g_blockEventsOnDrag) return;
 121
 122     listbox->GTKOnSelectionChanged();
 123 }
 124
 125 }
 126
 127 //-----------------------------------------------------------------------------
 128 // "key_press_event"
 129 //-----------------------------------------------------------------------------
 130
 131 extern "C" {
 132 static gboolean
 133 gtk_listbox_key_press_callback( GtkWidget *WXUNUSED(widget),
 134                                 GdkEventKey *gdk_event,
 135                                 wxListBox *listbox )
 136 {
 137     if ((gdk_event->keyval == GDK_Return) ||
 138         (gdk_event->keyval == GDK_ISO_Enter) ||
 139         (gdk_event->keyval == GDK_KP_Enter))
 140     {
 141         int index = -1;
 142         if (!listbox->HasMultipleSelection())
 143             index = listbox->GetSelection();
 144         else
 145         {
 146             wxArrayInt sels;
 147             if (listbox->GetSelections( sels ) < 1)
 148                 return FALSE;
 149             index = sels[0];
 150         }
 151
 152         if (index != wxNOT_FOUND)
 153         {
 154             listbox->GTKOnActivated(index);
 155
 156 //          wxMac and wxMSW always invoke default action
 157 //          if (!ret)
 158             {
 159                 // DClick not handled -> invoke default action
 160                 wxWindow *tlw = wxGetTopLevelParent( listbox );
 161                 if (tlw)
 162                 {
 163                     GtkWindow *gtk_window = GTK_WINDOW( tlw->GetHandle() );
 164                     if (gtk_window)
 165                         gtk_window_activate_default( gtk_window );
 166                 }
 167             }
 168
 169             // Always intercept, otherwise we'd get another dclick
 170             // event from row_activated
 171             return TRUE;
 172         }
 173     }
 174
 175     return FALSE;
 176 }
 177 }
 178
 179 //-----------------------------------------------------------------------------
 180 // GtkTreeEntry destruction (to destroy client data)
 181 //-----------------------------------------------------------------------------
 182
 183 extern "C" {
 184 static void gtk_tree_entry_destroy_cb(GtkTreeEntry* entry,
 185                                       wxListBox* listbox)
 186 {
 187     if (listbox->HasClientObjectData())
 188     {
 189         gpointer userdata = gtk_tree_entry_get_userdata(entry);
 190         if (userdata)
 191             delete (wxClientData *)userdata;
 192     }
 193 }
 194 }
 195
 196 //-----------------------------------------------------------------------------
 197 // Sorting callback (standard CmpNoCase return value)
 198 //-----------------------------------------------------------------------------
 199
 200 extern "C" {
 201 static gint gtk_listbox_sort_callback(GtkTreeModel * WXUNUSED(model),
 202                                       GtkTreeIter  *a,
 203                                       GtkTreeIter  *b,
 204                                       wxListBox    *listbox)
 205 {
 206     wxGtkObject<GtkTreeEntry> entry1(GetEntry(listbox->m_liststore, a, listbox));
 207     wxCHECK_MSG(entry1, 0, wxT("Could not get first entry"));
 208
 209     wxGtkObject<GtkTreeEntry> entry2(GetEntry(listbox->m_liststore, b, listbox));
 210     wxCHECK_MSG(entry2, 0, wxT("Could not get second entry"));
 211
 212     //We compare collate keys here instead of calling g_utf8_collate
 213     //as it is rather slow (and even the docs reccommend this)
 214     return strcmp(gtk_tree_entry_get_collate_key(entry1),
 215                   gtk_tree_entry_get_collate_key(entry2)) >= 0;
 216 }
 217 }
 218
 219 //-----------------------------------------------------------------------------
 220 // Searching callback (TRUE == not equal, FALSE == equal)
 221 //-----------------------------------------------------------------------------
 222
 223 extern "C" {
 224 static gboolean gtk_listbox_searchequal_callback(GtkTreeModel * WXUNUSED(model),
 225                                                  gint WXUNUSED(column),
 226                                                  const gchar* key,
 227                                                  GtkTreeIter* iter,
 228                                                  wxListBox* listbox)
 229 {
 230     wxGtkObject<GtkTreeEntry>
 231         entry(GetEntry(listbox->m_liststore, iter, listbox));
 232     wxCHECK_MSG(entry, 0, wxT("Could not get entry"));
 233
 234     wxGtkString keycollatekey(g_utf8_collate_key(key, -1));
 235
 236     return strcmp(keycollatekey, gtk_tree_entry_get_collate_key(entry)) != 0;
 237 }
 238 }
 239
 240 //-----------------------------------------------------------------------------
 241 // wxListBox
 242 //-----------------------------------------------------------------------------
 243
 244 // ----------------------------------------------------------------------------
 245 // construction
 246 // ----------------------------------------------------------------------------
 247
 248 void wxListBox::Init()
 249 {
 250     m_treeview = NULL;
 251 #if wxUSE_CHECKLISTBOX
 252     m_hasCheckBoxes = false;
 253 #endif // wxUSE_CHECKLISTBOX
 254 }
 255
 256 bool wxListBox::Create( wxWindow *parent, wxWindowID id,
 257                         const wxPoint &pos, const wxSize &size,
 258                         const wxArrayString& choices,
 259                         long style, const wxValidator& validator,
 260                         const wxString &name )
 261 {
 262     wxCArrayString chs(choices);
 263
 264     return Create( parent, id, pos, size, chs.GetCount(), chs.GetStrings(),
 265                    style, validator, name );
 266 }
 267
 268 bool wxListBox::Create( wxWindow *parent, wxWindowID id,
 269                         const wxPoint &pos, const wxSize &size,
 270                         int n, const wxString choices[],
 271                         long style, const wxValidator& validator,
 272                         const wxString &name )
 273 {
 274     if (!PreCreation( parent, pos, size ) ||
 275         !CreateBase( parent, id, pos, size, style, validator, name ))
 276     {
 277         wxFAIL_MSG( wxT("wxListBox creation failed") );
 278         return false;
 279     }
 280
 281     m_widget = gtk_scrolled_window_new( NULL, NULL );
 282     g_object_ref(m_widget);
 283     if (style & wxLB_ALWAYS_SB)
 284     {
 285       gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
 286         GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS );
 287     }
 288     else
 289     {
 290       gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW(m_widget),
 291         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 292     }
 293
 294
 295     GTKScrolledWindowSetBorder(m_widget, style);
 296
 297     m_treeview = GTK_TREE_VIEW( gtk_tree_view_new( ) );
 298
 299     //wxListBox doesn't have a header :)
 300     //NB: If enabled SetFirstItem doesn't work correctly
 301     gtk_tree_view_set_headers_visible(m_treeview, FALSE);
 302
 303 #if wxUSE_CHECKLISTBOX
 304     if(m_hasCheckBoxes)
 305         ((wxCheckListBox*)this)->DoCreateCheckList();
 306 #endif // wxUSE_CHECKLISTBOX
 307
 308     // Create the data column
 309     gtk_tree_view_insert_column_with_attributes(m_treeview, -1, "",
 310                                                 gtk_cell_renderer_text_new(),
 311                                                 "text",
 312                                                 WXLISTBOX_DATACOLUMN, NULL);
 313
 314     // Now create+set the model (GtkListStore) - first argument # of columns
 315 #if wxUSE_CHECKLISTBOX
 316     if(m_hasCheckBoxes)
 317         m_liststore = gtk_list_store_new(2, G_TYPE_BOOLEAN,
 318                                             GTK_TYPE_TREE_ENTRY);
 319     else
 320 #endif
 321         m_liststore = gtk_list_store_new(1, GTK_TYPE_TREE_ENTRY);
 322
 323     gtk_tree_view_set_model(m_treeview, GTK_TREE_MODEL(m_liststore));
 324
 325     g_object_unref (m_liststore); //free on treeview destruction
 326
 327     // Disable the pop-up textctrl that enables searching - note that
 328     // the docs specify that even if this disabled (which we are doing)
 329     // the user can still have it through the start-interactive-search
 330     // key binding...either way we want to provide a searchequal callback
 331     // NB: If this is enabled a doubleclick event (activate) gets sent
 332     //     on a successful search
 333     gtk_tree_view_set_search_column(m_treeview, WXLISTBOX_DATACOLUMN);
 334     gtk_tree_view_set_search_equal_func(m_treeview,
 335        (GtkTreeViewSearchEqualFunc) gtk_listbox_searchequal_callback,
 336                                         this,
 337                                         NULL);
 338
 339     gtk_tree_view_set_enable_search(m_treeview, FALSE);
 340
 341     GtkSelectionMode mode;
 342     // GTK_SELECTION_EXTENDED is a deprecated synonym for GTK_SELECTION_MULTIPLE
 343     if ( style & (wxLB_MULTIPLE | wxLB_EXTENDED) )
 344     {
 345         mode = GTK_SELECTION_MULTIPLE;
 346     }
 347     else // no multi-selection flags specified
 348     {
 349         m_windowStyle |= wxLB_SINGLE;
 350
 351         // Notice that we must use BROWSE and not GTK_SELECTION_SINGLE because
 352         // the latter allows to not select any items at all while a single
 353         // selection listbox is supposed to always have a selection (at least
 354         // once the user selected something, it might not have any initially).
 355         mode = GTK_SELECTION_BROWSE;
 356     }
 357
 358     GtkTreeSelection* selection = gtk_tree_view_get_selection( m_treeview );
 359     gtk_tree_selection_set_mode( selection, mode );
 360
 361     // Handle sortable stuff
 362     if(HasFlag(wxLB_SORT))
 363     {
 364         // Setup sorting in ascending (wx) order
 365         gtk_tree_sortable_set_sort_column_id(GTK_TREE_SORTABLE(m_liststore),
 366                                              WXLISTBOX_DATACOLUMN,
 367                                              GTK_SORT_ASCENDING);
 368
 369         // Set the sort callback
 370         gtk_tree_sortable_set_sort_func(GTK_TREE_SORTABLE(m_liststore),
 371                                         WXLISTBOX_DATACOLUMN,
 372                    (GtkTreeIterCompareFunc) gtk_listbox_sort_callback,
 373                                         this, //userdata
 374                                         NULL //"destroy notifier"
 375                                        );
 376     }
 377
 378
 379     gtk_container_add (GTK_CONTAINER (m_widget), GTK_WIDGET(m_treeview) );
 380
 381     gtk_widget_show( GTK_WIDGET(m_treeview) );
 382     m_focusWidget = GTK_WIDGET(m_treeview);
 383
 384     Append(n, choices); // insert initial items
 385
 386     // generate dclick events
 387     g_signal_connect_after(m_treeview, "row-activated",
 388                      G_CALLBACK(gtk_listbox_row_activated_callback), this);
 389
 390     // for intercepting dclick generation by <ENTER>
 391     g_signal_connect (m_treeview, "key_press_event",
 392                       G_CALLBACK (gtk_listbox_key_press_callback),
 393                            this);
 394     m_parent->DoAddChild( this );
 395
 396     PostCreation(size);
 397     SetInitialSize(size); // need this too because this is a wxControlWithItems
 398
 399     g_signal_connect_after (selection, "changed",
 400                             G_CALLBACK (gtk_listitem_changed_callback), this);
 401
 402     return true;
 403 }
 404
 405 wxListBox::~wxListBox()
 406 {
 407     m_hasVMT = false;
 408
 409     Clear();
 410 }
 411
 412 void wxListBox::GTKDisableEvents()
 413 {
 414     GtkTreeSelection* selection = gtk_tree_view_get_selection( m_treeview );
 415
 416     g_signal_handlers_block_by_func(selection,
 417                                 (gpointer) gtk_listitem_changed_callback, this);
 418 }
 419
 420 void wxListBox::GTKEnableEvents()
 421 {
 422     GtkTreeSelection* selection = gtk_tree_view_get_selection( m_treeview );
 423
 424     g_signal_handlers_unblock_by_func(selection,
 425                                 (gpointer) gtk_listitem_changed_callback, this);
 426
 427     UpdateOldSelections();
 428 }
 429
 430
 431 void wxListBox::Update()
 432 {
 433     wxWindow::Update();
 434
 435     if (m_treeview)
 436         gdk_window_process_updates(GTK_WIDGET(m_treeview)->window, TRUE);
 437 }
 438
 439 // ----------------------------------------------------------------------------
 440 // adding items
 441 // ----------------------------------------------------------------------------
 442
 443 int wxListBox::DoInsertItems(const wxArrayStringsAdapter& items,
 444                              unsigned int pos,
 445                              void **clientData,
 446                              wxClientDataType type)
 447 {
 448     wxCHECK_MSG( m_treeview != NULL, wxNOT_FOUND, wxT("invalid listbox") );
 449
 450     InvalidateBestSize();
 451
 452     GtkTreeIter* pIter = NULL; // append by default
 453     GtkTreeIter iter;
 454     if ( pos != GetCount() )
 455     {
 456         wxCHECK_MSG( GTKGetIteratorFor(pos, &iter), wxNOT_FOUND,
 457                      wxT("internal wxListBox error in insertion") );
 458
 459         pIter = &iter;
 460     }
 461
 462     const unsigned int numItems = items.GetCount();
 463     for ( unsigned int i = 0; i < numItems; ++i )
 464     {
 465         wxGtkObject<GtkTreeEntry> entry(gtk_tree_entry_new());
 466         gtk_tree_entry_set_label(entry, wxGTK_CONV(items[i]));
 467         gtk_tree_entry_set_destroy_func(entry,
 468                 (GtkTreeEntryDestroy)gtk_tree_entry_destroy_cb,
 469                             this);
 470
 471         GtkTreeIter itercur;
 472         gtk_list_store_insert_before(m_liststore, &itercur, pIter);
 473
 474         GTKSetItem(itercur, entry);
 475
 476         if (clientData)
 477             AssignNewItemClientData(GTKGetIndexFor(itercur), clientData, i, type);
 478     }
 479
 480     UpdateOldSelections();
 481
 482     return pos + numItems - 1;
 483 }
 484
 485 // ----------------------------------------------------------------------------
 486 // deleting items
 487 // ----------------------------------------------------------------------------
 488
 489 void wxListBox::DoClear()
 490 {
 491     wxCHECK_RET( m_treeview != NULL, wxT("invalid listbox") );
 492
 493     GTKDisableEvents(); // just in case
 494
 495     InvalidateBestSize();
 496
 497     gtk_list_store_clear( m_liststore ); /* well, THAT was easy :) */
 498
 499     GTKEnableEvents();
 500 }
 501
 502 void wxListBox::DoDeleteOneItem(unsigned int n)
 503 {
 504     wxCHECK_RET( m_treeview != NULL, wxT("invalid listbox") );
 505
 506     InvalidateBestSize();
 507
 508     GTKDisableEvents(); // just in case
 509
 510     GtkTreeIter iter;
 511     wxCHECK_RET( GTKGetIteratorFor(n, &iter), wxT("wrong listbox index") );
 512
 513     // this returns false if iter is invalid (e.g. deleting item at end) but
 514     // since we don't use iter, we ignore the return value
 515     gtk_list_store_remove(m_liststore, &iter);
 516
 517     GTKEnableEvents();
 518 }
 519
 520 // ----------------------------------------------------------------------------
 521 // helper functions for working with iterators
 522 // ----------------------------------------------------------------------------
 523
 524 bool wxListBox::GTKGetIteratorFor(unsigned pos, GtkTreeIter *iter) const
 525 {
 526     if ( !gtk_tree_model_iter_nth_child(GTK_TREE_MODEL(m_liststore),
 527                                         iter, NULL, pos) )
 528     {
 529         wxLogDebug(wxT("gtk_tree_model_iter_nth_child(%u) failed"), pos);
 530         return false;
 531     }
 532
 533     return true;
 534 }
 535
 536 int wxListBox::GTKGetIndexFor(GtkTreeIter& iter) const
 537 {
 538     GtkTreePath *path =
 539         gtk_tree_model_get_path(GTK_TREE_MODEL(m_liststore), &iter);
 540
 541     gint* pIntPath = gtk_tree_path_get_indices(path);
 542
 543     wxCHECK_MSG( pIntPath, wxNOT_FOUND, wxT("failed to get iterator path") );
 544
 545     int idx = pIntPath[0];
 546
 547     gtk_tree_path_free( path );
 548
 549     return idx;
 550 }
 551
 552 // get GtkTreeEntry from position (note: you need to g_unref it if valid)
 553 GtkTreeEntry *wxListBox::GTKGetEntry(unsigned n) const
 554 {
 555     GtkTreeIter iter;
 556     if ( !GTKGetIteratorFor(n, &iter) )
 557         return NULL;
 558
 559     return GetEntry(m_liststore, &iter, this);
 560 }
 561
 562 void wxListBox::GTKSetItem(GtkTreeIter& iter, const GtkTreeEntry *entry)
 563 {
 564 #if wxUSE_CHECKLISTBOX
 565     if ( m_hasCheckBoxes )
 566     {
 567         gtk_list_store_set(m_liststore, &iter,
 568                            0, FALSE, // FALSE == not toggled
 569                            1, entry,
 570                            -1);
 571     }
 572     else
 573 #endif // wxUSE_CHECKLISTBOX
 574     {
 575         gtk_list_store_set(m_liststore, &iter, 0, entry, -1);
 576     }
 577 }
 578
 579 // ----------------------------------------------------------------------------
 580 // client data
 581 // ----------------------------------------------------------------------------
 582
 583 void* wxListBox::DoGetItemClientData(unsigned int n) const
 584 {
 585     wxGtkObject<GtkTreeEntry> entry(GTKGetEntry(n));
 586     wxCHECK_MSG(entry, NULL, wxT("could not get entry"));
 587
 588     return gtk_tree_entry_get_userdata( entry );
 589 }
 590
 591 void wxListBox::DoSetItemClientData(unsigned int n, void* clientData)
 592 {
 593     wxGtkObject<GtkTreeEntry> entry(GTKGetEntry(n));
 594     wxCHECK_RET(entry, wxT("could not get entry"));
 595
 596     gtk_tree_entry_set_userdata( entry, clientData );
 597 }
 598
 599 // ----------------------------------------------------------------------------
 600 // string list access
 601 // ----------------------------------------------------------------------------
 602
 603 void wxListBox::SetString(unsigned int n, const wxString& label)
 604 {
 605     wxCHECK_RET( IsValid(n), wxT("invalid index in wxListBox::SetString") );
 606     wxCHECK_RET( m_treeview != NULL, wxT("invalid listbox") );
 607
 608     GtkTreeEntry* entry = GTKGetEntry(n);
 609     wxCHECK_RET( entry, wxT("wrong listbox index") );
 610
 611     // update the item itself
 612     gtk_tree_entry_set_label(entry, wxGTK_CONV(label));
 613
 614     // and update the model which will refresh the tree too
 615     GtkTreeIter iter;
 616     wxCHECK_RET( GTKGetIteratorFor(n, &iter), wxT("failed to get iterator") );
 617
 618     // FIXME: this resets the checked status of a wxCheckListBox item
 619
 620     GTKSetItem(iter, entry);
 621 }
 622
 623 wxString wxListBox::GetString(unsigned int n) const
 624 {
 625     wxCHECK_MSG( m_treeview != NULL, wxEmptyString, wxT("invalid listbox") );
 626
 627     wxGtkObject<GtkTreeEntry> entry(GTKGetEntry(n));
 628     wxCHECK_MSG( entry, wxEmptyString, wxT("wrong listbox index") );
 629
 630     return wxGTK_CONV_BACK( gtk_tree_entry_get_label(entry) );
 631 }
 632
 633 unsigned int wxListBox::GetCount() const
 634 {
 635     wxCHECK_MSG( m_treeview != NULL, 0, wxT("invalid listbox") );
 636
 637     return (unsigned int)gtk_tree_model_iter_n_children(GTK_TREE_MODEL(m_liststore), NULL);
 638 }
 639
 640 int wxListBox::FindString( const wxString &item, bool bCase ) const
 641 {
 642     wxCHECK_MSG( m_treeview != NULL, wxNOT_FOUND, wxT("invalid listbox") );
 643
 644     //Sort of hackish - maybe there is a faster way
 645     unsigned int nCount = wxListBox::GetCount();
 646
 647     for(unsigned int i = 0; i < nCount; ++i)
 648     {
 649         if( item.IsSameAs( wxListBox::GetString(i), bCase ) )
 650             return (int)i;
 651     }
 652
 653
 654     // it's not an error if the string is not found -> no wxCHECK
 655     return wxNOT_FOUND;
 656 }
 657
 658 // ----------------------------------------------------------------------------
 659 // selection
 660 // ----------------------------------------------------------------------------
 661
 662 void wxListBox::GTKOnActivated(int item)
 663 {
 664     SendEvent(wxEVT_COMMAND_LISTBOX_DOUBLECLICKED, item, IsSelected(item));
 665 }
 666
 667 void wxListBox::GTKOnSelectionChanged()
 668 {
 669     if ( HasFlag(wxLB_MULTIPLE | wxLB_EXTENDED) )
 670     {
 671         CalcAndSendEvent();
 672     }
 673     else // single selection
 674     {
 675         const int item = GetSelection();
 676         if ( DoChangeSingleSelection(item) )
 677             SendEvent(wxEVT_COMMAND_LISTBOX_SELECTED, item, true);
 678     }
 679 }
 680
 681 int wxListBox::GetSelection() const
 682 {
 683     wxCHECK_MSG( m_treeview != NULL, wxNOT_FOUND, wxT("invalid listbox"));
 684     wxCHECK_MSG( HasFlag(wxLB_SINGLE), wxNOT_FOUND,
 685                     wxT("must be single selection listbox"));
 686
 687     GtkTreeIter iter;
 688     GtkTreeSelection* selection = gtk_tree_view_get_selection(m_treeview);
 689
 690     // only works on single-sel
 691     if (!gtk_tree_selection_get_selected(selection, NULL, &iter))
 692         return wxNOT_FOUND;
 693
 694     return GTKGetIndexFor(iter);
 695 }
 696
 697 int wxListBox::GetSelections( wxArrayInt& aSelections ) const
 698 {
 699     wxCHECK_MSG( m_treeview != NULL, wxNOT_FOUND, wxT("invalid listbox") );
 700
 701     aSelections.Empty();
 702
 703     int i = 0;
 704     GtkTreeIter iter;
 705     GtkTreeSelection* selection = gtk_tree_view_get_selection(m_treeview);
 706
 707     if (gtk_tree_model_get_iter_first(GTK_TREE_MODEL(m_liststore), &iter))
 708     { //gtk_tree_selection_get_selected_rows is GTK 2.2+ so iter instead
 709         do
 710         {
 711             if (gtk_tree_selection_iter_is_selected(selection, &iter))
 712                 aSelections.Add(i);
 713
 714             i++;
 715         } while(gtk_tree_model_iter_next(GTK_TREE_MODEL(m_liststore), &iter));
 716     }
 717
 718     return aSelections.GetCount();
 719 }
 720
 721 bool wxListBox::IsSelected( int n ) const
 722 {
 723     wxCHECK_MSG( m_treeview != NULL, false, wxT("invalid listbox") );
 724
 725     GtkTreeSelection* selection = gtk_tree_view_get_selection(m_treeview);
 726
 727     GtkTreeIter iter;
 728     wxCHECK_MSG( GTKGetIteratorFor(n, &iter), false, wxT("Invalid index") );
 729
 730     return gtk_tree_selection_iter_is_selected(selection, &iter);
 731 }
 732
 733 void wxListBox::DoSetSelection( int n, bool select )
 734 {
 735     wxCHECK_RET( m_treeview != NULL, wxT("invalid listbox") );
 736
 737     GTKDisableEvents();
 738
 739     GtkTreeSelection* selection = gtk_tree_view_get_selection(m_treeview);
 740
 741     // passing -1 to SetSelection() is documented to deselect all items
 742     if ( n == wxNOT_FOUND )
 743     {
 744         gtk_tree_selection_unselect_all(selection);
 745         GTKEnableEvents();
 746         return;
 747     }
 748
 749     wxCHECK_RET( IsValid(n), wxT("invalid index in wxListBox::SetSelection") );
 750
 751
 752     GtkTreeIter iter;
 753     wxCHECK_RET( GTKGetIteratorFor(n, &iter), wxT("Invalid index") );
 754
 755     if (select)
 756         gtk_tree_selection_select_iter(selection, &iter);
 757     else
 758         gtk_tree_selection_unselect_iter(selection, &iter);
 759
 760     GtkTreePath* path = gtk_tree_model_get_path(
 761                         GTK_TREE_MODEL(m_liststore), &iter);
 762
 763     gtk_tree_view_scroll_to_cell(m_treeview, path, NULL, FALSE, 0.0f, 0.0f);
 764
 765     gtk_tree_path_free(path);
 766
 767     GTKEnableEvents();
 768 }
 769
 770 void wxListBox::DoScrollToCell(int n, float alignY, float alignX)
 771 {
 772     wxCHECK_RET( m_treeview, wxT("invalid listbox") );
 773     wxCHECK_RET( IsValid(n), wxT("invalid index"));
 774
 775     //RN: I have no idea why this line is needed...
 776     if (gdk_pointer_is_grabbed () && GTK_WIDGET_HAS_GRAB (m_treeview))
 777         return;
 778
 779     GtkTreeIter iter;
 780     if ( !GTKGetIteratorFor(n, &iter) )
 781         return;
 782
 783     GtkTreePath* path = gtk_tree_model_get_path(
 784                             GTK_TREE_MODEL(m_liststore), &iter);
 785
 786     // Scroll to the desired cell (0.0 == topleft alignment)
 787     gtk_tree_view_scroll_to_cell(m_treeview, path, NULL,
 788                                  TRUE, alignY, alignX);
 789
 790     gtk_tree_path_free(path);
 791 }
 792
 793 void wxListBox::DoSetFirstItem(int n)
 794 {
 795     DoScrollToCell(n, 0, 0);
 796 }
 797
 798 void wxListBox::EnsureVisible(int n)
 799 {
 800     DoScrollToCell(n, 0.5, 0);
 801 }
 802
 803 // ----------------------------------------------------------------------------
 804 // hittest
 805 // ----------------------------------------------------------------------------
 806
 807 int wxListBox::DoListHitTest(const wxPoint& point) const
 808 {
 809     // gtk_tree_view_get_path_at_pos() also gets items that are not visible and
 810     // we only want visible items we need to check for it manually here
 811     if ( !GetClientRect().Contains(point) )
 812         return wxNOT_FOUND;
 813
 814     // need to translate from master window since it is in client coords
 815     gint binx, biny;
 816     gdk_window_get_geometry(gtk_tree_view_get_bin_window(m_treeview),
 817                             &binx, &biny, NULL, NULL, NULL);
 818
 819     GtkTreePath* path;
 820     if ( !gtk_tree_view_get_path_at_pos
 821           (
 822             m_treeview,
 823             point.x - binx,
 824             point.y - biny,
 825             &path,
 826             NULL,   // [out] column (always 0 here)
 827             NULL,   // [out] x-coord relative to the cell (not interested)
 828             NULL    // [out] y-coord relative to the cell
 829           ) )
 830     {
 831         return wxNOT_FOUND;
 832     }
 833
 834     int index = gtk_tree_path_get_indices(path)[0];
 835     gtk_tree_path_free(path);
 836
 837     return index;
 838 }
 839
 840 // ----------------------------------------------------------------------------
 841 // helpers
 842 // ----------------------------------------------------------------------------
 843
 844 GtkWidget *wxListBox::GetConnectWidget()
 845 {
 846     // the correct widget for listbox events (such as mouse clicks for example)
 847     // is m_treeview, not the parent scrolled window
 848     return GTK_WIDGET(m_treeview);
 849 }
 850
 851 GdkWindow *wxListBox::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
 852 {
 853     return gtk_tree_view_get_bin_window(m_treeview);
 854 }
 855
 856 void wxListBox::DoApplyWidgetStyle(GtkRcStyle *style)
 857 {
 858     if (m_hasBgCol && m_backgroundColour.Ok())
 859     {
 860         GdkWindow *window = gtk_tree_view_get_bin_window(m_treeview);
 861         if (window)
 862         {
 863             m_backgroundColour.CalcPixel( gdk_drawable_get_colormap( window ) );
 864             gdk_window_set_background( window, m_backgroundColour.GetColor() );
 865             gdk_window_clear( window );
 866         }
 867     }
 868
 869     gtk_widget_modify_style( GTK_WIDGET(m_treeview), style );
 870 }
 871
 872 wxSize wxListBox::DoGetBestSize() const
 873 {
 874     wxCHECK_MSG(m_treeview, wxDefaultSize, wxT("invalid tree view"));
 875
 876     // Start with a minimum size that's not too small
 877     int cx, cy;
 878     GetTextExtent( wxT("X"), &cx, &cy);
 879     int lbWidth = 0;
 880     int lbHeight = 10;
 881
 882     // Find the widest string.
 883     const unsigned int count = GetCount();
 884     if ( count )
 885     {
 886         int wLine;
 887         for ( unsigned int i = 0; i < count; i++ )
 888         {
 889             GetTextExtent(GetString(i), &wLine, NULL);
 890             if ( wLine > lbWidth )
 891                 lbWidth = wLine;
 892         }
 893     }
 894
 895     lbWidth += 3 * cx;
 896
 897     // And just a bit more for the checkbox if present and then some
 898     // (these are rough guesses)
 899 #if wxUSE_CHECKLISTBOX
 900     if ( m_hasCheckBoxes )
 901     {
 902         lbWidth += 35;
 903         cy = cy > 25 ? cy : 25; // rough height of checkbox
 904     }
 905 #endif
 906
 907     // Add room for the scrollbar
 908     lbWidth += wxSystemSettings::GetMetric(wxSYS_VSCROLL_X);
 909
 910     // Don't make the listbox too tall but don't make it too small neither
 911     lbHeight = (cy+4) * wxMin(wxMax(count, 3), 10);
 912
 913     wxSize best(lbWidth, lbHeight);
 914     CacheBestSize(best);
 915     return best;
 916 }
 917
 918 // static
 919 wxVisualAttributes
 920 wxListBox::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
 921 {
 922     return GetDefaultAttributesFromGTKWidget(gtk_tree_view_new, true);
 923 }
 924
 925 #endif // wxUSE_LISTBOX