src/gtk/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin, 2005 Mart Raudsepp
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/textctrl.h"
  14
  15 #ifndef WX_PRECOMP
  16     #include "wx/intl.h"
  17     #include "wx/log.h"
  18     #include "wx/utils.h"
  19     #include "wx/panel.h"
  20     #include "wx/settings.h"
  21     #include "wx/math.h"
  22 #endif
  23
  24 #include "wx/strconv.h"
  25 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  26
  27 #include <sys/types.h>
  28 #include <sys/stat.h>
  29 #include <ctype.h>
  30
  31 #include "wx/gtk/private.h"
  32 #include <gdk/gdkkeysyms.h>
  33
  34 // ----------------------------------------------------------------------------
  35 // helpers
  36 // ----------------------------------------------------------------------------
  37
  38 extern "C" {
  39 static void wxGtkOnRemoveTag(GtkTextBuffer *buffer,
  40                              GtkTextTag *tag,
  41                              GtkTextIter *start,
  42                              GtkTextIter *end,
  43                              char *prefix)
  44 {
  45     gchar *name;
  46     g_object_get (tag, "name", &name, NULL);
  47
  48     if (!name || strncmp(name, prefix, strlen(prefix)))
  49         // anonymous tag or not starting with prefix - don't remove
  50         g_signal_stop_emission_by_name (buffer, "remove_tag");
  51
  52     g_free(name);
  53 }
  54 }
  55
  56 extern "C" {
  57 static void wxGtkTextApplyTagsFromAttr(GtkTextBuffer *text_buffer,
  58                                        const wxTextAttr& attr,
  59                                        GtkTextIter *start,
  60                                        GtkTextIter *end)
  61 {
  62     static gchar buf[1024];
  63     GtkTextTag *tag;
  64
  65     gulong remove_handler_id = g_signal_connect (text_buffer, "remove_tag",
  66             G_CALLBACK (wxGtkOnRemoveTag), gpointer("WX"));
  67     gtk_text_buffer_remove_all_tags(text_buffer, start, end);
  68     g_signal_handler_disconnect (text_buffer, remove_handler_id);
  69
  70     if (attr.HasFont())
  71     {
  72         PangoFontDescription *font_description = attr.GetFont().GetNativeFontInfo()->description;
  73         wxGtkString font_string(pango_font_description_to_string(font_description));
  74         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string.c_str());
  75         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  76                                          buf );
  77         if (!tag)
  78             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  79                                               "font-desc", font_description,
  80                                               NULL );
  81         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  82
  83         if (attr.GetFont().GetUnderlined())
  84         {
  85             g_snprintf(buf, sizeof(buf), "WXFONTUNDERLINE");
  86             tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  87                                              buf );
  88             if (!tag)
  89                 tag = gtk_text_buffer_create_tag( text_buffer, buf,
  90                                                   "underline-set", TRUE,
  91                                                   "underline", PANGO_UNDERLINE_SINGLE,
  92                                                   NULL );
  93             gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  94         }
  95     }
  96
  97     if (attr.HasTextColour())
  98     {
  99         const GdkColor *colFg = attr.GetTextColour().GetColor();
 100         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
 101                    colFg->red, colFg->green, colFg->blue);
 102         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 103                                          buf );
 104         if (!tag)
 105             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 106                                               "foreground-gdk", colFg, NULL );
 107         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 108     }
 109
 110     if (attr.HasBackgroundColour())
 111     {
 112         const GdkColor *colBg = attr.GetBackgroundColour().GetColor();
 113         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
 114                    colBg->red, colBg->green, colBg->blue);
 115         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 116                                          buf );
 117         if (!tag)
 118             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 119                                               "background-gdk", colBg, NULL );
 120         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 121     }
 122
 123     if (attr.HasAlignment())
 124     {
 125         GtkTextIter para_start, para_end = *end;
 126         gtk_text_buffer_get_iter_at_line( text_buffer,
 127                                           &para_start,
 128                                           gtk_text_iter_get_line(start) );
 129         gtk_text_iter_forward_line(&para_end);
 130
 131         remove_handler_id = g_signal_connect (text_buffer, "remove_tag",
 132                                               G_CALLBACK(wxGtkOnRemoveTag),
 133                                               gpointer("WXALIGNMENT"));
 134         gtk_text_buffer_remove_all_tags( text_buffer, &para_start, &para_end );
 135         g_signal_handler_disconnect (text_buffer, remove_handler_id);
 136
 137         GtkJustification align;
 138         switch (attr.GetAlignment())
 139         {
 140             default:
 141                 align = GTK_JUSTIFY_LEFT;
 142                 break;
 143             case wxTEXT_ALIGNMENT_RIGHT:
 144                 align = GTK_JUSTIFY_RIGHT;
 145                 break;
 146             case wxTEXT_ALIGNMENT_CENTER:
 147                 align = GTK_JUSTIFY_CENTER;
 148                 break;
 149             // gtk+ doesn't support justify as of gtk+-2.7.4
 150         }
 151
 152         g_snprintf(buf, sizeof(buf), "WXALIGNMENT %d", align);
 153         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 154                                          buf );
 155         if (!tag)
 156             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 157                                               "justification", align, NULL );
 158         gtk_text_buffer_apply_tag( text_buffer, tag, &para_start, &para_end );
 159     }
 160 }
 161 }
 162
 163 extern "C" {
 164 static void wxGtkTextInsert(GtkWidget *text,
 165                             GtkTextBuffer *text_buffer,
 166                             const wxTextAttr& attr,
 167                             const wxCharBuffer& buffer)
 168
 169 {
 170     gint start_offset;
 171     GtkTextIter iter, start;
 172
 173     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 174                                      gtk_text_buffer_get_insert (text_buffer) );
 175     start_offset = gtk_text_iter_get_offset (&iter);
 176     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 177
 178     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 179
 180     wxGtkTextApplyTagsFromAttr(text_buffer, attr, &start, &iter);
 181 }
 182 }
 183
 184 // ----------------------------------------------------------------------------
 185 // "insert_text" for GtkEntry
 186 // ----------------------------------------------------------------------------
 187
 188 extern "C" {
 189 static void
 190 gtk_insert_text_callback(GtkEditable *editable,
 191                          const gchar *new_text,
 192                          gint new_text_length,
 193                          gint *position,
 194                          wxTextCtrl *win)
 195 {
 196     if (g_isIdle)
 197         wxapp_install_idle_handler();
 198
 199     // we should only be called if we have a max len limit at all
 200     GtkEntry *entry = GTK_ENTRY (editable);
 201
 202     wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
 203
 204     // check that we don't overflow the max length limit
 205     //
 206     // FIXME: this doesn't work when we paste a string which is going to be
 207     //        truncated
 208     if ( entry->text_length == entry->text_max_length )
 209     {
 210         // we don't need to run the base class version at all
 211         g_signal_stop_emission_by_name (editable, "insert_text");
 212
 213         // remember that the next changed signal is to be ignored to avoid
 214         // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
 215         win->IgnoreNextTextUpdate();
 216
 217         // and generate the correct one ourselves
 218         wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
 219         event.SetEventObject(win);
 220         event.SetString(win->GetValue());
 221         win->GetEventHandler()->ProcessEvent( event );
 222     }
 223 }
 224 }
 225
 226 // Implementation of wxTE_AUTO_URL for wxGTK2 by Mart Raudsepp,
 227
 228 extern "C" {
 229 static void
 230 au_apply_tag_callback(GtkTextBuffer *buffer,
 231                       GtkTextTag *tag,
 232                       GtkTextIter *start,
 233                       GtkTextIter *end,
 234                       gpointer textctrl)
 235 {
 236     if(tag == gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl"))
 237         g_signal_stop_emission_by_name (buffer, "apply_tag");
 238 }
 239 }
 240
 241 //-----------------------------------------------------------------------------
 242 //  GtkTextCharPredicates for gtk_text_iter_*_find_char
 243 //-----------------------------------------------------------------------------
 244
 245 extern "C" {
 246 static gboolean
 247 pred_whitespace (gunichar ch, gpointer user_data)
 248 {
 249     return g_unichar_isspace(ch);
 250 }
 251 }
 252
 253 extern "C" {
 254 static gboolean
 255 pred_non_whitespace (gunichar ch, gpointer user_data)
 256 {
 257     return !g_unichar_isspace(ch);
 258 }
 259 }
 260
 261 extern "C" {
 262 static gboolean
 263 pred_nonpunct (gunichar ch, gpointer user_data)
 264 {
 265     return !g_unichar_ispunct(ch);
 266 }
 267 }
 268
 269 extern "C" {
 270 static gboolean
 271 pred_nonpunct_or_slash (gunichar ch, gpointer user_data)
 272 {
 273     return !g_unichar_ispunct(ch) || ch == '/';
 274 }
 275 }
 276
 277 //-----------------------------------------------------------------------------
 278 //  Check for links between s and e and correct tags as necessary
 279 //-----------------------------------------------------------------------------
 280
 281 // This function should be made match better while being efficient at one point.
 282 // Most probably with a row of regular expressions.
 283 extern "C" {
 284 static void
 285 au_check_word( GtkTextIter *s, GtkTextIter *e )
 286 {
 287     static const char *URIPrefixes[] =
 288     {
 289         "http://",
 290         "ftp://",
 291         "www.",
 292         "ftp.",
 293         "mailto://",
 294         "https://",
 295         "file://",
 296         "nntp://",
 297         "news://",
 298         "telnet://",
 299         "mms://",
 300         "gopher://",
 301         "prospero://",
 302         "wais://",
 303     };
 304
 305     GtkTextIter start = *s, end = *e;
 306     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 307
 308     // Get our special link tag
 309     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 310
 311     // Get rid of punctuation from beginning and end.
 312     // Might want to move this to au_check_range if an improved link checking doesn't
 313     // use some intelligent punctuation checking itself (beware of undesired iter modifications).
 314     if(g_unichar_ispunct( gtk_text_iter_get_char( &start ) ) )
 315         gtk_text_iter_forward_find_char( &start, pred_nonpunct, NULL, e );
 316
 317     gtk_text_iter_backward_find_char( &end, pred_nonpunct_or_slash, NULL, &start );
 318     gtk_text_iter_forward_char(&end);
 319
 320     gchar* text = gtk_text_iter_get_text( &start, &end );
 321     size_t len = strlen(text), prefix_len;
 322     size_t n;
 323
 324     for( n = 0; n < WXSIZEOF(URIPrefixes); ++n )
 325     {
 326         prefix_len = strlen(URIPrefixes[n]);
 327         if((len > prefix_len) && !strncasecmp(text, URIPrefixes[n], prefix_len))
 328             break;
 329     }
 330
 331     if(n < WXSIZEOF(URIPrefixes))
 332     {
 333         gulong signal_id = g_signal_handler_find (buffer,
 334                                                   (GSignalMatchType) (G_SIGNAL_MATCH_FUNC),
 335                                                   0, 0, NULL,
 336                                                   (gpointer)au_apply_tag_callback, NULL);
 337
 338         g_signal_handler_block (buffer, signal_id);
 339         gtk_text_buffer_apply_tag(buffer, tag, &start, &end);
 340         g_signal_handler_unblock (buffer, signal_id);
 341     }
 342 }
 343 }
 344
 345 extern "C" {
 346 static void
 347 au_check_range(GtkTextIter *s,
 348                GtkTextIter *range_end)
 349 {
 350     GtkTextIter range_start = *s;
 351     GtkTextIter word_end;
 352     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 353     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 354
 355     gtk_text_buffer_remove_tag(buffer, tag, s, range_end);
 356
 357     if(g_unichar_isspace(gtk_text_iter_get_char(&range_start)))
 358         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 359
 360     while(!gtk_text_iter_equal(&range_start, range_end))
 361     {
 362         word_end = range_start;
 363         gtk_text_iter_forward_find_char(&word_end, pred_whitespace, NULL, range_end);
 364
 365         // Now we should have a word delimited by range_start and word_end, correct link tags
 366         au_check_word(&range_start, &word_end);
 367
 368         range_start = word_end;
 369         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 370     }
 371 }
 372 }
 373
 374 //-----------------------------------------------------------------------------
 375 //  "insert-text" for GtkTextBuffer
 376 //-----------------------------------------------------------------------------
 377
 378 extern "C" {
 379 static void
 380 au_insert_text_callback(GtkTextBuffer *buffer,
 381                         GtkTextIter *end,
 382                         gchar *text,
 383                         gint len,
 384                         wxTextCtrl *win)
 385 {
 386     if (!len || !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 387         return;
 388
 389     GtkTextIter start = *end;
 390     gtk_text_iter_backward_chars(&start, g_utf8_strlen(text, len));
 391
 392     GtkTextIter line_start = start;
 393     GtkTextIter line_end = *end;
 394     GtkTextIter words_start = start;
 395     GtkTextIter words_end = *end;
 396
 397     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(&start));
 398     gtk_text_iter_forward_to_line_end(&line_end);
 399     gtk_text_iter_backward_find_char(&words_start, pred_whitespace, NULL, &line_start);
 400     gtk_text_iter_forward_find_char(&words_end, pred_whitespace, NULL, &line_end);
 401
 402     au_check_range(&words_start, &words_end);
 403 }
 404 }
 405
 406 //-----------------------------------------------------------------------------
 407 //  "delete-range" for GtkTextBuffer
 408 //-----------------------------------------------------------------------------
 409
 410 extern "C" {
 411 static void
 412 au_delete_range_callback(GtkTextBuffer *buffer,
 413                          GtkTextIter *start,
 414                          GtkTextIter *end,
 415                          wxTextCtrl *win)
 416 {
 417     if( !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 418         return;
 419
 420     GtkTextIter line_start = *start, line_end = *end;
 421
 422     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(start));
 423     gtk_text_iter_forward_to_line_end(&line_end);
 424     gtk_text_iter_backward_find_char(start, pred_whitespace, NULL, &line_start);
 425     gtk_text_iter_forward_find_char(end, pred_whitespace, NULL, &line_end);
 426
 427     au_check_range(start, end);
 428 }
 429 }
 430
 431
 432 //-----------------------------------------------------------------------------
 433 //  "changed"
 434 //-----------------------------------------------------------------------------
 435
 436 extern "C" {
 437 static void
 438 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
 439 {
 440     if ( win->IgnoreTextUpdate() )
 441         return;
 442
 443     if (!win->m_hasVMT) return;
 444
 445     if (g_isIdle)
 446         wxapp_install_idle_handler();
 447
 448     if ( win->MarkDirtyOnChange() )
 449         win->MarkDirty();
 450
 451     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
 452     event.SetEventObject( win );
 453     win->GetEventHandler()->ProcessEvent( event );
 454 }
 455 }
 456
 457 //-----------------------------------------------------------------------------
 458 //  clipboard events: "copy-clipboard", "cut-clipboard", "paste-clipboard"
 459 //-----------------------------------------------------------------------------
 460
 461 // common part of the event handlers below
 462 static void
 463 handle_text_clipboard_callback( GtkWidget *widget, wxTextCtrl *win,
 464                                 wxEventType eventType, const gchar * signal_name)
 465 {
 466     wxClipboardTextEvent event( eventType, win->GetId() );
 467     event.SetEventObject( win );
 468     if ( win->GetEventHandler()->ProcessEvent( event ) )
 469     {
 470         // don't let the default processing to take place if we did something
 471         // ourselves in the event handler
 472         g_signal_stop_emission_by_name (widget, signal_name);
 473     }
 474 }
 475
 476 extern "C" {
 477 static void
 478 gtk_copy_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 479 {
 480     handle_text_clipboard_callback(
 481         widget, win, wxEVT_COMMAND_TEXT_COPY, "copy-clipboard" );
 482 }
 483
 484 static void
 485 gtk_cut_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 486 {
 487     handle_text_clipboard_callback(
 488         widget, win, wxEVT_COMMAND_TEXT_CUT, "cut-clipboard" );
 489 }
 490
 491 static void
 492 gtk_paste_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 493 {
 494     handle_text_clipboard_callback(
 495         widget, win, wxEVT_COMMAND_TEXT_PASTE, "paste-clipboard" );
 496 }
 497 }
 498
 499 //-----------------------------------------------------------------------------
 500 // "expose_event" from scrolled window and textview
 501 //-----------------------------------------------------------------------------
 502
 503 extern "C" {
 504 static gboolean
 505 gtk_text_exposed_callback( GtkWidget *widget, GdkEventExpose *event, wxTextCtrl *win )
 506 {
 507     return TRUE;
 508 }
 509 }
 510
 511
 512 //-----------------------------------------------------------------------------
 513 //  wxTextCtrl
 514 //-----------------------------------------------------------------------------
 515
 516 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 517
 518 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 519     EVT_CHAR(wxTextCtrl::OnChar)
 520
 521     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 522     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 523     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 524     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 525     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 526
 527     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 528     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 529     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 530     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 531     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 532
 533     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 534     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 535     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 536     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 537     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 538     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 539     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 540     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 541     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 542 END_EVENT_TABLE()
 543
 544 void wxTextCtrl::Init()
 545 {
 546     m_dontMarkDirty =
 547     m_modified = false;
 548
 549     m_countUpdatesToIgnore = 0;
 550
 551     SetUpdateFont(false);
 552
 553     m_text = NULL;
 554     m_frozenness = 0;
 555     m_gdkHandCursor = NULL;
 556     m_gdkXTermCursor = NULL;
 557 }
 558
 559 wxTextCtrl::~wxTextCtrl()
 560 {
 561     if(m_gdkHandCursor)
 562         gdk_cursor_unref(m_gdkHandCursor);
 563     if(m_gdkXTermCursor)
 564         gdk_cursor_unref(m_gdkXTermCursor);
 565 }
 566
 567 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 568                         wxWindowID id,
 569                         const wxString &value,
 570                         const wxPoint &pos,
 571                         const wxSize &size,
 572                         long style,
 573                         const wxValidator& validator,
 574                         const wxString &name )
 575 {
 576     Init();
 577
 578     Create( parent, id, value, pos, size, style, validator, name );
 579 }
 580
 581 bool wxTextCtrl::Create( wxWindow *parent,
 582                          wxWindowID id,
 583                          const wxString &value,
 584                          const wxPoint &pos,
 585                          const wxSize &size,
 586                          long style,
 587                          const wxValidator& validator,
 588                          const wxString &name )
 589 {
 590     m_needParent = true;
 591     m_acceptsFocus = true;
 592
 593     if (!PreCreation( parent, pos, size ) ||
 594         !CreateBase( parent, id, pos, size, style, validator, name ))
 595     {
 596         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 597         return false;
 598     }
 599
 600     bool multi_line = (style & wxTE_MULTILINE) != 0;
 601
 602     if (multi_line)
 603     {
 604         // Create view
 605         m_text = gtk_text_view_new();
 606
 607         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 608
 609         // create scrolled window
 610         m_widget = gtk_scrolled_window_new( NULL, NULL );
 611         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 612                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 613         // for ScrollLines/Pages
 614         m_scrollBar[1] = (GtkRange*)((GtkScrolledWindow*)m_widget)->vscrollbar;
 615
 616         // Insert view into scrolled window
 617         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 618
 619         // translate wx wrapping style to GTK+
 620         GtkWrapMode wrap;
 621         if ( HasFlag( wxTE_DONTWRAP ) )
 622             wrap = GTK_WRAP_NONE;
 623         else if ( HasFlag( wxTE_CHARWRAP ) )
 624             wrap = GTK_WRAP_CHAR;
 625         else if ( HasFlag( wxTE_WORDWRAP ) )
 626             wrap = GTK_WRAP_WORD;
 627         else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 628         {
 629             // GTK_WRAP_WORD_CHAR seems to be new in GTK+ 2.4
 630 #ifdef __WXGTK24__
 631             if ( !gtk_check_version(2,4,0) )
 632             {
 633                 wrap = GTK_WRAP_WORD_CHAR;
 634             }
 635             else
 636 #endif
 637             wrap = GTK_WRAP_WORD;
 638         }
 639
 640         gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 641
 642         GtkScrolledWindowSetBorder(m_widget, style);
 643
 644         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 645
 646         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 647     }
 648     else
 649     {
 650         // a single-line text control: no need for scrollbars
 651         m_widget =
 652         m_text = gtk_entry_new();
 653
 654         if (style & wxNO_BORDER)
 655             g_object_set (m_text, "has-frame", FALSE, NULL);
 656     }
 657
 658     m_parent->DoAddChild( this );
 659
 660     m_focusWidget = m_text;
 661
 662     PostCreation(size);
 663
 664     if (multi_line)
 665     {
 666         gtk_widget_show(m_text);
 667     }
 668
 669     if (!value.empty())
 670     {
 671         SetValue( value );
 672     }
 673
 674     if (style & wxTE_PASSWORD)
 675     {
 676         if (!multi_line)
 677             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 678     }
 679
 680     if (style & wxTE_READONLY)
 681     {
 682         if (!multi_line)
 683             gtk_editable_set_editable( GTK_EDITABLE(m_text), FALSE );
 684         else
 685             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 686     }
 687
 688     if (multi_line)
 689     {
 690         if (style & wxTE_RIGHT)
 691             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_RIGHT );
 692         else if (style & wxTE_CENTRE)
 693             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_CENTER );
 694         // Left justify (alignment) is the default and we don't need to apply GTK_JUSTIFY_LEFT
 695     }
 696     else
 697     {
 698 #ifdef __WXGTK24__
 699         // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 700         if (!gtk_check_version(2,4,0))
 701         {
 702             if (style & wxTE_RIGHT)
 703                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 1.0 );
 704             else if (style & wxTE_CENTRE)
 705                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 0.5 );
 706         }
 707 #endif
 708     }
 709
 710     // We want to be notified about text changes.
 711     if (multi_line)
 712     {
 713         g_signal_connect (m_buffer, "changed",
 714                           G_CALLBACK (gtk_text_changed_callback), this);
 715
 716         // .. and handle URLs on multi-line controls with wxTE_AUTO_URL style
 717         if (style & wxTE_AUTO_URL)
 718         {
 719             GtkTextIter start, end;
 720             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 721             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 722
 723             // We create our wxUrl tag here for slight efficiency gain - we
 724             // don't have to check for the tag existance in callbacks,
 725             // hereby it's guaranteed to exist.
 726             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 727                                        "foreground", "blue",
 728                                        "underline", PANGO_UNDERLINE_SINGLE,
 729                                        NULL);
 730
 731             // Check for URLs after each text change
 732             g_signal_connect_after (m_buffer, "insert_text",
 733                                     G_CALLBACK (au_insert_text_callback), this);
 734             g_signal_connect_after (m_buffer, "delete_range",
 735                                     G_CALLBACK (au_delete_range_callback), this);
 736
 737             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 738             // block this callback temporarily. This takes care of gtk+ internal
 739             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 740             // which is undesired because only a part of the URL might be copied.
 741             // The insert-text signal emitted inside it will take care of newly formed
 742             // or wholly copied URLs.
 743             g_signal_connect (m_buffer, "apply_tag",
 744                               G_CALLBACK (au_apply_tag_callback), NULL);
 745
 746             // Check for URLs in the initial string passed to Create
 747             gtk_text_buffer_get_start_iter(m_buffer, &start);
 748             gtk_text_buffer_get_end_iter(m_buffer, &end);
 749             au_check_range(&start, &end);
 750         }
 751     }
 752     else
 753     {
 754         g_signal_connect (m_text, "changed",
 755                           G_CALLBACK (gtk_text_changed_callback), this);
 756     }
 757
 758     g_signal_connect (m_text, "copy-clipboard",
 759                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 760     g_signal_connect (m_text, "cut-clipboard",
 761                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 762     g_signal_connect (m_text, "paste-clipboard",
 763                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 764
 765     m_cursor = wxCursor( wxCURSOR_IBEAM );
 766
 767     wxTextAttr attrDef(GetForegroundColour(), GetBackgroundColour(), GetFont());
 768     SetDefaultStyle( attrDef );
 769
 770     return true;
 771 }
 772
 773
 774 void wxTextCtrl::CalculateScrollbar()
 775 {
 776 }
 777
 778 wxString wxTextCtrl::GetValue() const
 779 {
 780     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 781
 782     wxString tmp;
 783     if ( IsMultiLine() )
 784     {
 785         GtkTextIter start;
 786         gtk_text_buffer_get_start_iter( m_buffer, &start );
 787         GtkTextIter end;
 788         gtk_text_buffer_get_end_iter( m_buffer, &end );
 789         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 790
 791         const wxWxCharBuffer buf = wxGTK_CONV_BACK(text);
 792         if ( buf )
 793             tmp = buf;
 794     }
 795     else
 796     {
 797         const gchar *text = gtk_entry_get_text( GTK_ENTRY(m_text) );
 798         const wxWxCharBuffer buf = wxGTK_CONV_BACK( text );
 799         if ( buf )
 800             tmp = buf;
 801     }
 802
 803     return tmp;
 804 }
 805
 806 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 807 {
 808     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 809     // encoding?
 810
 811     // first check the default text style (we intentionally don't check the
 812     // style for the current position as it doesn't make sense for SetValue())
 813     const wxTextAttr& style = GetDefaultStyle();
 814     wxFontEncoding enc = style.HasFont() ? style.GetFont().GetEncoding()
 815                                          : wxFONTENCODING_SYSTEM;
 816
 817     // fall back to the controls font if no style
 818     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 819         enc = GetFont().GetEncoding();
 820
 821     return enc;
 822 }
 823
 824 bool wxTextCtrl::IsEmpty() const
 825 {
 826     if ( IsMultiLine() )
 827         return gtk_text_buffer_get_char_count(m_buffer) != 0;
 828
 829     return wxTextCtrlBase::IsEmpty();
 830 }
 831
 832 void wxTextCtrl::DoSetValue( const wxString &value, int flags )
 833 {
 834     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 835
 836     // the control won't be modified any more as we programmatically replace
 837     // all the existing text, so reset the flag and don't set it again (and do
 838     // it now, before the text event handler is ran so that IsModified() called
 839     // from there returns the expected value)
 840     m_modified = false;
 841     DontMarkDirtyOnNextChange();
 842
 843     const wxCharBuffer buffer(wxGTK_CONV_ENC(value, GetTextEncoding()));
 844     if ( !buffer )
 845     {
 846         // see comment in WriteText() as to why we must warn the user about
 847         // this
 848         wxLogWarning(_("Failed to set text in the text control."));
 849         return;
 850     }
 851
 852     // if the control is not empty, two "changed" signals are emitted,
 853     // otherwise only one and we need to ignore either both or one of them
 854     int ignore = flags & SetValue_SendEvent ? 0 : 1;
 855     if ( !IsEmpty() )
 856         ignore++;
 857
 858     if ( ignore )
 859         IgnoreNextTextUpdate(ignore);
 860
 861     if ( IsMultiLine() )
 862     {
 863         gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 864     }
 865     else // single line
 866     {
 867         gtk_entry_set_text( GTK_ENTRY(m_text), buffer );
 868     }
 869
 870     // GRG, Jun/2000: Changed this after a lot of discussion in
 871     //   the lists. wxWidgets 2.2 will have a set of flags to
 872     //   customize this behaviour.
 873     SetInsertionPoint(0);
 874 }
 875
 876 void wxTextCtrl::WriteText( const wxString &text )
 877 {
 878     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 879
 880     if ( text.empty() )
 881         return;
 882
 883     // check if we have a specific style for the current position
 884     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
 885     wxTextAttr style;
 886     if ( GetStyle(GetInsertionPoint(), style) && style.HasFont() )
 887     {
 888         enc = style.GetFont().GetEncoding();
 889     }
 890
 891     if ( enc == wxFONTENCODING_SYSTEM )
 892         enc = GetTextEncoding();
 893
 894     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
 895     if ( !buffer )
 896     {
 897         // we must log an error here as losing the text like this can be a
 898         // serious problem (e.g. imagine the document edited by user being
 899         // empty instead of containing the correct text)
 900         wxLogWarning(_("Failed to insert text in the control."));
 901         return;
 902     }
 903
 904     // we're changing the text programmatically
 905     DontMarkDirtyOnNextChange();
 906
 907     if ( IsMultiLine() )
 908     {
 909         // First remove the selection if there is one
 910         // TODO:  Is there an easier GTK specific way to do this?
 911         long from, to;
 912         GetSelection(&from, &to);
 913         if (from != to)
 914             Remove(from, to);
 915
 916         // Insert the text
 917         wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
 918
 919         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
 920         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
 921         if ( wxIsSameDouble(adj->value, adj->upper - adj->page_size) )
 922         {
 923             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
 924                     gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
 925         }
 926     }
 927     else // single line
 928     {
 929         // First remove the selection if there is one
 930         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 931
 932         // This moves the cursor pos to behind the inserted text.
 933         gint len = gtk_editable_get_position(GTK_EDITABLE(m_text));
 934
 935         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 936
 937         // Bring entry's cursor uptodate.
 938         gtk_editable_set_position( GTK_EDITABLE(m_text), len );
 939     }
 940 }
 941
 942 void wxTextCtrl::AppendText( const wxString &text )
 943 {
 944     SetInsertionPointEnd();
 945     WriteText( text );
 946 }
 947
 948 wxString wxTextCtrl::GetLineText( long lineNo ) const
 949 {
 950     wxString result;
 951     if ( IsMultiLine() )
 952     {
 953         GtkTextIter line;
 954         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
 955         GtkTextIter end = line;
 956         gtk_text_iter_forward_to_line_end(&end);
 957         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
 958         result = wxGTK_CONV_BACK(text);
 959     }
 960     else
 961     {
 962         if (lineNo == 0)
 963             result = GetValue();
 964     }
 965     return result;
 966 }
 967
 968 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 969 {
 970   /* If you implement this, don't forget to update the documentation!
 971    * (file docs/latex/wx/text.tex) */
 972     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 973 }
 974
 975 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 976 {
 977     if ( IsMultiLine() )
 978     {
 979         GtkTextIter iter;
 980
 981         if (pos > GetLastPosition())
 982             return false;
 983
 984         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
 985
 986         if ( y )
 987             *y = gtk_text_iter_get_line(&iter);
 988         if ( x )
 989             *x = gtk_text_iter_get_line_offset(&iter);
 990     }
 991     else // single line control
 992     {
 993         if ( pos <= GTK_ENTRY(m_text)->text_length )
 994         {
 995             if ( y )
 996                 *y = 0;
 997             if ( x )
 998                 *x = pos;
 999         }
1000         else
1001         {
1002             // index out of bounds
1003             return false;
1004         }
1005     }
1006
1007     return true;
1008 }
1009
1010 long wxTextCtrl::XYToPosition(long x, long y ) const
1011 {
1012     if ( IsSingleLine() )
1013         return 0;
1014
1015     GtkTextIter iter;
1016     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1017         return -1;
1018
1019     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1020     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1021         return -1;
1022
1023     return gtk_text_iter_get_offset(&iter) + x;
1024 }
1025
1026 int wxTextCtrl::GetLineLength(long lineNo) const
1027 {
1028     if ( IsMultiLine() )
1029     {
1030         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1031         if (lineNo > last_line)
1032             return -1;
1033
1034         GtkTextIter iter;
1035         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1036         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1037         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1038     }
1039     else
1040     {
1041         wxString str = GetLineText (lineNo);
1042         return (int) str.length();
1043     }
1044 }
1045
1046 int wxTextCtrl::GetNumberOfLines() const
1047 {
1048     if ( IsMultiLine() )
1049     {
1050         GtkTextIter iter;
1051         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, 0 );
1052
1053         // move forward by one display line until the end is reached
1054         int lineCount = 1;
1055         while ( gtk_text_view_forward_display_line(GTK_TEXT_VIEW(m_text), &iter) )
1056         {
1057             lineCount++;
1058         }
1059
1060         // If the last character in the text buffer is a newline,
1061         // gtk_text_view_forward_display_line() will return false without that
1062         // line being counted. Must add one manually in that case.
1063         GtkTextIter lastCharIter;
1064         gtk_text_buffer_get_iter_at_offset
1065         (
1066             m_buffer,
1067             &lastCharIter,
1068             gtk_text_buffer_get_char_count(m_buffer) - 1
1069         );
1070         gchar lastChar = gtk_text_iter_get_char( &lastCharIter );
1071         if ( lastChar == wxT('\n') )
1072             lineCount++;
1073
1074         return lineCount;
1075     }
1076     else // single line
1077     {
1078         return 1;
1079     }
1080 }
1081
1082 void wxTextCtrl::SetInsertionPoint( long pos )
1083 {
1084     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1085
1086     if ( IsMultiLine() )
1087     {
1088         GtkTextIter iter;
1089         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1090         gtk_text_buffer_place_cursor( m_buffer, &iter );
1091         gtk_text_view_scroll_mark_onscreen
1092         (
1093             GTK_TEXT_VIEW(m_text),
1094             gtk_text_buffer_get_insert( m_buffer )
1095         );
1096     }
1097     else
1098     {
1099         // FIXME: Is the editable's cursor really uptodate without double set_position in GTK2?
1100         gtk_editable_set_position(GTK_EDITABLE(m_text), int(pos));
1101     }
1102 }
1103
1104 void wxTextCtrl::SetInsertionPointEnd()
1105 {
1106     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1107
1108     if ( IsMultiLine() )
1109     {
1110         GtkTextIter end;
1111         gtk_text_buffer_get_end_iter( m_buffer, &end );
1112         gtk_text_buffer_place_cursor( m_buffer, &end );
1113     }
1114     else
1115     {
1116         gtk_editable_set_position( GTK_EDITABLE(m_text), -1 );
1117     }
1118 }
1119
1120 void wxTextCtrl::SetEditable( bool editable )
1121 {
1122     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1123
1124     if ( IsMultiLine() )
1125     {
1126         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1127     }
1128     else
1129     {
1130         gtk_editable_set_editable( GTK_EDITABLE(m_text), editable );
1131     }
1132 }
1133
1134 bool wxTextCtrl::Enable( bool enable )
1135 {
1136     if (!wxWindowBase::Enable(enable))
1137     {
1138         // nothing to do
1139         return false;
1140     }
1141
1142     if ( IsMultiLine() )
1143     {
1144         SetEditable( enable );
1145     }
1146     else
1147     {
1148         gtk_widget_set_sensitive( m_text, enable );
1149     }
1150
1151     return true;
1152 }
1153
1154 // wxGTK-specific: called recursively by Enable,
1155 // to give widgets an oppprtunity to correct their colours after they
1156 // have been changed by Enable
1157 void wxTextCtrl::OnParentEnable( bool enable )
1158 {
1159     // If we have a custom background colour, we use this colour in both
1160     // disabled and enabled mode, or we end up with a different colour under the
1161     // text.
1162     wxColour oldColour = GetBackgroundColour();
1163     if (oldColour.Ok())
1164     {
1165         // Need to set twice or it'll optimize the useful stuff out
1166         if (oldColour == * wxWHITE)
1167             SetBackgroundColour(*wxBLACK);
1168         else
1169             SetBackgroundColour(*wxWHITE);
1170         SetBackgroundColour(oldColour);
1171     }
1172 }
1173
1174 void wxTextCtrl::MarkDirty()
1175 {
1176     m_modified = true;
1177 }
1178
1179 void wxTextCtrl::DiscardEdits()
1180 {
1181     m_modified = false;
1182 }
1183
1184 // ----------------------------------------------------------------------------
1185 // max text length support
1186 // ----------------------------------------------------------------------------
1187
1188 bool wxTextCtrl::IgnoreTextUpdate()
1189 {
1190     if ( m_countUpdatesToIgnore > 0 )
1191     {
1192         m_countUpdatesToIgnore--;
1193
1194         return true;
1195     }
1196
1197     return false;
1198 }
1199
1200 bool wxTextCtrl::MarkDirtyOnChange()
1201 {
1202     if ( m_dontMarkDirty )
1203     {
1204         m_dontMarkDirty = false;
1205
1206         return false;
1207     }
1208
1209     return true;
1210 }
1211
1212 void wxTextCtrl::SetMaxLength(unsigned long len)
1213 {
1214     if ( !HasFlag(wxTE_MULTILINE) )
1215     {
1216         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
1217
1218         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
1219         // we had tried to enter more text than allowed by max text length and
1220         // the text wasn't really changed
1221         //
1222         // to detect this and generate TEXT_MAXLEN event instead of
1223         // TEXT_CHANGED one in this case we also catch "insert_text" signal
1224         //
1225         // when max len is set to 0 we disconnect our handler as it means that
1226         // we shouldn't check anything any more
1227         if ( len )
1228         {
1229             g_signal_connect (m_text, "insert_text",
1230                               G_CALLBACK (gtk_insert_text_callback), this);
1231         }
1232         else // no checking
1233         {
1234             g_signal_handlers_disconnect_by_func (m_text,
1235                     (gpointer) gtk_insert_text_callback, this);
1236         }
1237     }
1238 }
1239
1240 void wxTextCtrl::SetSelection( long from, long to )
1241 {
1242     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1243
1244     if (from == -1 && to == -1)
1245     {
1246         from = 0;
1247         to = GetValue().length();
1248     }
1249
1250     if ( IsMultiLine() )
1251     {
1252         GtkTextIter fromi, toi;
1253         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1254         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1255
1256         gtk_text_buffer_place_cursor( m_buffer, &toi );
1257         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1258     }
1259     else
1260     {
1261         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1262     }
1263 }
1264
1265 void wxTextCtrl::ShowPosition( long pos )
1266 {
1267     if ( IsMultiLine() )
1268     {
1269         GtkTextIter iter;
1270         gtk_text_buffer_get_start_iter( m_buffer, &iter );
1271         gtk_text_iter_set_offset( &iter, pos );
1272         GtkTextMark *mark = gtk_text_buffer_create_mark( m_buffer, NULL, &iter, TRUE );
1273         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1274     }
1275 }
1276
1277 wxTextCtrlHitTestResult
1278 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1279 {
1280     if ( !IsMultiLine() )
1281     {
1282         // not supported
1283         return wxTE_HT_UNKNOWN;
1284     }
1285
1286     int x, y;
1287     gtk_text_view_window_to_buffer_coords
1288     (
1289         GTK_TEXT_VIEW(m_text),
1290         GTK_TEXT_WINDOW_TEXT,
1291         pt.x, pt.y,
1292         &x, &y
1293     );
1294
1295     GtkTextIter iter;
1296     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1297     if ( pos )
1298         *pos = gtk_text_iter_get_offset(&iter);
1299
1300     return wxTE_HT_ON_TEXT;
1301 }
1302
1303 long wxTextCtrl::GetInsertionPoint() const
1304 {
1305     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1306
1307     if ( IsMultiLine() )
1308     {
1309         // There is no direct accessor for the cursor, but
1310         // internally, the cursor is the "mark" called
1311         // "insert" in the text view's btree structure.
1312
1313         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1314         GtkTextIter cursor;
1315         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1316
1317         return gtk_text_iter_get_offset( &cursor );
1318     }
1319     else
1320     {
1321         return (long) gtk_editable_get_position(GTK_EDITABLE(m_text));
1322     }
1323 }
1324
1325 wxTextPos wxTextCtrl::GetLastPosition() const
1326 {
1327     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1328
1329     int pos = 0;
1330
1331     if ( IsMultiLine() )
1332     {
1333         GtkTextIter end;
1334         gtk_text_buffer_get_end_iter( m_buffer, &end );
1335
1336         pos = gtk_text_iter_get_offset( &end );
1337     }
1338     else
1339     {
1340         pos = GTK_ENTRY(m_text)->text_length;
1341     }
1342
1343     return (long)pos;
1344 }
1345
1346 void wxTextCtrl::Remove( long from, long to )
1347 {
1348     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1349
1350     if ( IsMultiLine() )
1351     {
1352         GtkTextIter fromi, toi;
1353         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1354         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1355
1356         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1357     }
1358     else // single line
1359         gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1360 }
1361
1362 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1363 {
1364     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1365
1366     Remove( from, to );
1367
1368     if (!value.empty())
1369     {
1370         SetInsertionPoint( from );
1371         WriteText( value );
1372     }
1373 }
1374
1375 void wxTextCtrl::Cut()
1376 {
1377     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1378
1379     if ( IsMultiLine() )
1380         g_signal_emit_by_name (m_text, "cut-clipboard");
1381     else
1382         gtk_editable_cut_clipboard(GTK_EDITABLE(m_text));
1383 }
1384
1385 void wxTextCtrl::Copy()
1386 {
1387     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1388
1389     if ( IsMultiLine() )
1390         g_signal_emit_by_name (m_text, "copy-clipboard");
1391     else
1392         gtk_editable_copy_clipboard(GTK_EDITABLE(m_text));
1393 }
1394
1395 void wxTextCtrl::Paste()
1396 {
1397     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1398
1399     if ( IsMultiLine() )
1400         g_signal_emit_by_name (m_text, "paste-clipboard");
1401     else
1402         gtk_editable_paste_clipboard(GTK_EDITABLE(m_text));
1403 }
1404
1405 // Undo/redo
1406 void wxTextCtrl::Undo()
1407 {
1408     // TODO
1409     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1410 }
1411
1412 void wxTextCtrl::Redo()
1413 {
1414     // TODO
1415     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1416 }
1417
1418 bool wxTextCtrl::CanUndo() const
1419 {
1420     // TODO
1421     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1422     return false;
1423 }
1424
1425 bool wxTextCtrl::CanRedo() const
1426 {
1427     // TODO
1428     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1429     return false;
1430 }
1431
1432 // If the return values from and to are the same, there is no
1433 // selection.
1434 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1435 {
1436     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1437
1438     gint from = -1;
1439     gint to = -1;
1440     bool haveSelection = false;
1441
1442      if ( IsMultiLine() )
1443      {
1444          GtkTextIter ifrom, ito;
1445          if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1446          {
1447              haveSelection = true;
1448              from = gtk_text_iter_get_offset(&ifrom);
1449              to = gtk_text_iter_get_offset(&ito);
1450          }
1451      }
1452      else  // not multi-line
1453      {
1454          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1455                                                  &from, &to) )
1456          {
1457              haveSelection = true;
1458          }
1459      }
1460
1461      if (! haveSelection )
1462           from = to = GetInsertionPoint();
1463
1464      if ( from > to )
1465      {
1466          // exchange them to be compatible with wxMSW
1467          gint tmp = from;
1468          from = to;
1469          to = tmp;
1470      }
1471
1472     if ( fromOut )
1473         *fromOut = from;
1474     if ( toOut )
1475         *toOut = to;
1476 }
1477
1478
1479 bool wxTextCtrl::IsEditable() const
1480 {
1481     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1482
1483     if ( IsMultiLine() )
1484     {
1485         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1486     }
1487     else
1488     {
1489         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1490     }
1491 }
1492
1493 bool wxTextCtrl::IsModified() const
1494 {
1495     return m_modified;
1496 }
1497
1498 void wxTextCtrl::Clear()
1499 {
1500     SetValue( wxEmptyString );
1501 }
1502
1503 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1504 {
1505     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1506
1507     if ( key_event.GetKeyCode() == WXK_RETURN )
1508     {
1509         if ( HasFlag(wxTE_PROCESS_ENTER) )
1510         {
1511             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1512             event.SetEventObject(this);
1513             event.SetString(GetValue());
1514             if ( GetEventHandler()->ProcessEvent(event) )
1515                 return;
1516         }
1517
1518         // FIXME: this is not the right place to do it, wxDialog::OnCharHook()
1519         //        probably is
1520         if ( IsSingleLine() )
1521         {
1522             // This will invoke the dialog default action, such
1523             // as the clicking the default button.
1524
1525             wxWindow *top_frame = m_parent;
1526             while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1527                 top_frame = top_frame->GetParent();
1528
1529             if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1530             {
1531                 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1532
1533                 if (window->default_widget)
1534                 {
1535                     gtk_widget_activate (window->default_widget);
1536                     return;
1537                 }
1538             }
1539         }
1540     }
1541
1542     key_event.Skip();
1543 }
1544
1545 GtkWidget* wxTextCtrl::GetConnectWidget()
1546 {
1547     return GTK_WIDGET(m_text);
1548 }
1549
1550 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1551 {
1552     if ( IsMultiLine() )
1553     {
1554         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1555                                         GTK_TEXT_WINDOW_TEXT );
1556     }
1557     else
1558     {
1559         return GTK_ENTRY(m_text)->text_area;
1560     }
1561 }
1562
1563 // the font will change for subsequent text insertiongs
1564 bool wxTextCtrl::SetFont( const wxFont &font )
1565 {
1566     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1567
1568     if ( !wxTextCtrlBase::SetFont(font) )
1569     {
1570         // font didn't change, nothing to do
1571         return false;
1572     }
1573
1574     if ( IsMultiLine() )
1575     {
1576         SetUpdateFont(true);
1577
1578         m_defaultStyle.SetFont(font);
1579
1580         ChangeFontGlobally();
1581     }
1582
1583     return true;
1584 }
1585
1586 void wxTextCtrl::ChangeFontGlobally()
1587 {
1588     // this method is very inefficient and hence should be called as rarely as
1589     // possible!
1590     //
1591     // TODO: it can be implemented much more efficiently for GTK2
1592     wxASSERT_MSG( IsMultiLine(),
1593                   _T("shouldn't be called for single line controls") );
1594
1595     wxString value = GetValue();
1596     if ( !value.empty() )
1597     {
1598         SetUpdateFont(false);
1599
1600         Clear();
1601         AppendText(value);
1602     }
1603 }
1604
1605 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1606 {
1607     if ( !wxControl::SetForegroundColour(colour) )
1608         return false;
1609
1610     // update default fg colour too
1611     m_defaultStyle.SetTextColour(colour);
1612
1613     return true;
1614 }
1615
1616 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1617 {
1618     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1619
1620     if ( !wxControl::SetBackgroundColour( colour ) )
1621         return false;
1622
1623     if (!m_backgroundColour.Ok())
1624         return false;
1625
1626     // change active background color too
1627     m_defaultStyle.SetBackgroundColour( colour );
1628
1629     return true;
1630 }
1631
1632 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1633 {
1634     if ( IsMultiLine() )
1635     {
1636         if ( style.IsDefault() )
1637         {
1638             // nothing to do
1639             return true;
1640         }
1641
1642         gint l = gtk_text_buffer_get_char_count( m_buffer );
1643
1644         wxCHECK_MSG( start >= 0 && end <= l, false,
1645                      _T("invalid range in wxTextCtrl::SetStyle") );
1646
1647         GtkTextIter starti, endi;
1648         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1649         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1650
1651         // use the attributes from style which are set in it and fall back
1652         // first to the default style and then to the text control default
1653         // colours for the others
1654         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1655
1656         wxGtkTextApplyTagsFromAttr( m_buffer, attr, &starti, &endi );
1657
1658         return true;
1659     }
1660
1661     // else single line
1662     // cannot do this for GTK+'s Entry widget
1663     return false;
1664 }
1665
1666 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1667 {
1668     gtk_widget_modify_style(m_text, style);
1669 }
1670
1671 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1672 {
1673     Cut();
1674 }
1675
1676 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1677 {
1678     Copy();
1679 }
1680
1681 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1682 {
1683     Paste();
1684 }
1685
1686 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1687 {
1688     Undo();
1689 }
1690
1691 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1692 {
1693     Redo();
1694 }
1695
1696 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1697 {
1698     event.Enable( CanCut() );
1699 }
1700
1701 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1702 {
1703     event.Enable( CanCopy() );
1704 }
1705
1706 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1707 {
1708     event.Enable( CanPaste() );
1709 }
1710
1711 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1712 {
1713     event.Enable( CanUndo() );
1714 }
1715
1716 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1717 {
1718     event.Enable( CanRedo() );
1719 }
1720
1721 wxSize wxTextCtrl::DoGetBestSize() const
1722 {
1723     // FIXME should be different for multi-line controls...
1724     wxSize ret( wxControl::DoGetBestSize() );
1725     wxSize best(80, ret.y);
1726     CacheBestSize(best);
1727     return best;
1728 }
1729
1730 // ----------------------------------------------------------------------------
1731 // freeze/thaw
1732 // ----------------------------------------------------------------------------
1733
1734 void wxTextCtrl::Freeze()
1735 {
1736     if ( HasFlag(wxTE_MULTILINE) )
1737     {
1738         if ( !m_frozenness++ )
1739         {
1740             // freeze textview updates and remove buffer
1741             g_signal_connect (m_text, "expose_event",
1742                               G_CALLBACK (gtk_text_exposed_callback), this);
1743             g_signal_connect (m_widget, "expose_event",
1744                               G_CALLBACK (gtk_text_exposed_callback), this);
1745             gtk_widget_set_sensitive(m_widget, false);
1746             g_object_ref(m_buffer);
1747             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), gtk_text_buffer_new(NULL));
1748         }
1749     }
1750 }
1751
1752 void wxTextCtrl::Thaw()
1753 {
1754     if ( HasFlag(wxTE_MULTILINE) )
1755     {
1756         wxASSERT_MSG( m_frozenness > 0, _T("Thaw() without matching Freeze()") );
1757
1758         if ( !--m_frozenness )
1759         {
1760             // Reattach buffer and thaw textview updates
1761             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1762             g_object_unref(m_buffer);
1763             gtk_widget_set_sensitive(m_widget, true);
1764             g_signal_handlers_disconnect_by_func (m_widget,
1765                     (gpointer) gtk_text_exposed_callback, this);
1766             g_signal_handlers_disconnect_by_func (m_text,
1767                     (gpointer) gtk_text_exposed_callback, this);
1768         }
1769     }
1770 }
1771
1772 // ----------------------------------------------------------------------------
1773 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1774 // ----------------------------------------------------------------------------
1775
1776 // FIXME: when dragging on a link the sample gets an "Unknown event".
1777 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1778 // a buggy sample, or something else
1779 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1780 {
1781     event.Skip();
1782     if( !HasFlag(wxTE_AUTO_URL) )
1783         return;
1784
1785     gint x, y;
1786     GtkTextIter start, end;
1787     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1788                                                 "wxUrl");
1789
1790     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1791                                           event.GetX(), event.GetY(), &x, &y);
1792
1793     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1794     if (!gtk_text_iter_has_tag(&end, tag))
1795     {
1796         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1797                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1798         return;
1799     }
1800
1801     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1802                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1803
1804     start = end;
1805     if(!gtk_text_iter_begins_tag(&start, tag))
1806         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1807     if(!gtk_text_iter_ends_tag(&end, tag))
1808         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1809
1810     // Native context menu is probably not desired on an URL.
1811     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1812     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1813         event.Skip(false);
1814
1815     wxTextUrlEvent url_event(m_windowId, event,
1816                              gtk_text_iter_get_offset(&start),
1817                              gtk_text_iter_get_offset(&end));
1818
1819     InitCommandEvent(url_event);
1820     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1821     //event.Skip(!GetEventHandler()->ProcessEvent(url_event));
1822     GetEventHandler()->ProcessEvent(url_event);
1823 }
1824
1825 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
1826 {
1827     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
1828
1829     // GtkTextView starts a drag operation when left mouse button is pressed
1830     // and ends it when it is released and if it doesn't get the release event
1831     // the next click on a control results in an assertion failure inside
1832     // gtk_text_view_start_selection_drag() which simply *kills* the program
1833     // without anything we can do about it, so always let GTK+ have this event
1834     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
1835 }
1836
1837 // static
1838 wxVisualAttributes
1839 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1840 {
1841     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1842 }