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