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/settings.h"
  20     #include "wx/math.h"
  21 #endif
  22
  23 #include "wx/strconv.h"
  24 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  25
  26 #include <sys/types.h>
  27 #include <sys/stat.h>
  28 #include <ctype.h>
  29
  30 #include "wx/gtk/private.h"
  31
  32 // ----------------------------------------------------------------------------
  33 // helpers
  34 // ----------------------------------------------------------------------------
  35
  36 extern "C" {
  37 static void wxGtkOnRemoveTag(GtkTextBuffer *buffer,
  38                              GtkTextTag *tag,
  39                              GtkTextIter *start,
  40                              GtkTextIter *end,
  41                              char *prefix)
  42 {
  43     gchar *name;
  44     g_object_get (tag, "name", &name, NULL);
  45
  46     if (!name || strncmp(name, prefix, strlen(prefix)))
  47         // anonymous tag or not starting with prefix - don't remove
  48         g_signal_stop_emission_by_name (buffer, "remove_tag");
  49
  50     g_free(name);
  51 }
  52 }
  53
  54 // remove all tags starting with the given prefix from the start..end range
  55 static void
  56 wxGtkTextRemoveTagsWithPrefix(GtkTextBuffer *text_buffer,
  57                               const char *prefix,
  58                               GtkTextIter *start,
  59                               GtkTextIter *end)
  60 {
  61     gulong remove_handler_id = g_signal_connect
  62                                (
  63                                 text_buffer,
  64                                 "remove_tag",
  65                                 G_CALLBACK(wxGtkOnRemoveTag),
  66                                 gpointer(prefix)
  67                                );
  68     gtk_text_buffer_remove_all_tags(text_buffer, start, end);
  69     g_signal_handler_disconnect(text_buffer, remove_handler_id);
  70 }
  71
  72 static void wxGtkTextApplyTagsFromAttr(GtkWidget *text,
  73                                        GtkTextBuffer *text_buffer,
  74                                        const wxTextAttr& attr,
  75                                        GtkTextIter *start,
  76                                        GtkTextIter *end)
  77 {
  78     static gchar buf[1024];
  79     GtkTextTag *tag;
  80
  81     if (attr.HasFont())
  82     {
  83         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXFONT", start, end);
  84
  85         PangoFontDescription *font_description = attr.GetFont().GetNativeFontInfo()->description;
  86         wxGtkString font_string(pango_font_description_to_string(font_description));
  87         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string.c_str());
  88         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  89                                          buf );
  90         if (!tag)
  91             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  92                                               "font-desc", font_description,
  93                                               NULL );
  94         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  95
  96         if (attr.GetFont().GetUnderlined())
  97         {
  98             g_snprintf(buf, sizeof(buf), "WXFONTUNDERLINE");
  99             tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 100                                              buf );
 101             if (!tag)
 102                 tag = gtk_text_buffer_create_tag( text_buffer, buf,
 103                                                   "underline-set", TRUE,
 104                                                   "underline", PANGO_UNDERLINE_SINGLE,
 105                                                   NULL );
 106             gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 107         }
 108     }
 109
 110     if (attr.HasTextColour())
 111     {
 112         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXFORECOLOR", start, end);
 113
 114         const GdkColor *colFg = attr.GetTextColour().GetColor();
 115         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
 116                    colFg->red, colFg->green, colFg->blue);
 117         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 118                                          buf );
 119         if (!tag)
 120             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 121                                               "foreground-gdk", colFg, NULL );
 122         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 123     }
 124
 125     if (attr.HasBackgroundColour())
 126     {
 127         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXBACKCOLOR", start, end);
 128
 129         const GdkColor *colBg = attr.GetBackgroundColour().GetColor();
 130         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
 131                    colBg->red, colBg->green, colBg->blue);
 132         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 133                                          buf );
 134         if (!tag)
 135             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 136                                               "background-gdk", colBg, NULL );
 137         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 138     }
 139
 140     if (attr.HasAlignment())
 141     {
 142         GtkTextIter para_start, para_end = *end;
 143         gtk_text_buffer_get_iter_at_line( text_buffer,
 144                                           &para_start,
 145                                           gtk_text_iter_get_line(start) );
 146         gtk_text_iter_forward_line(&para_end);
 147
 148         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXALIGNMENT", start, end);
 149
 150         GtkJustification align;
 151         switch (attr.GetAlignment())
 152         {
 153             default:
 154                 align = GTK_JUSTIFY_LEFT;
 155                 break;
 156             case wxTEXT_ALIGNMENT_RIGHT:
 157                 align = GTK_JUSTIFY_RIGHT;
 158                 break;
 159             case wxTEXT_ALIGNMENT_CENTER:
 160                 align = GTK_JUSTIFY_CENTER;
 161                 break;
 162 // gtk+ doesn't support justify before gtk+-2.11.0 with pango-1.17 being available
 163 // (but if new enough pango isn't available it's a mere gtk warning)
 164 #if GTK_CHECK_VERSION(2,11,0)
 165             case wxTEXT_ALIGNMENT_JUSTIFIED:
 166                 if (!gtk_check_version(2,11,0))
 167                     align = GTK_JUSTIFY_FILL;
 168                 else
 169                     align = GTK_JUSTIFY_LEFT;
 170                 break;
 171 #endif
 172         }
 173
 174         g_snprintf(buf, sizeof(buf), "WXALIGNMENT %d", align);
 175         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 176                                          buf );
 177         if (!tag)
 178             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 179                                               "justification", align, NULL );
 180         gtk_text_buffer_apply_tag( text_buffer, tag, &para_start, &para_end );
 181     }
 182
 183     if (attr.HasLeftIndent())
 184     {
 185         // Indentation attribute
 186
 187         // Clear old indentation tags
 188         GtkTextIter para_start, para_end = *end;
 189         gtk_text_buffer_get_iter_at_line( text_buffer,
 190                                           &para_start,
 191                                           gtk_text_iter_get_line(start) );
 192         gtk_text_iter_forward_line(&para_end);
 193
 194         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXINDENT", start, end);
 195
 196         // Convert indent from 1/10th of a mm into pixels
 197         float factor;
 198 #if GTK_CHECK_VERSION(2,2,0)
 199         if (!gtk_check_version(2,2,0))
 200             factor = (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 201                       gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 202         else
 203 #endif
 204             factor = (float)gdk_screen_width() / gdk_screen_width_mm() / 10;
 205
 206         const int indent = (int)(factor * attr.GetLeftIndent());
 207         const int subIndent = (int)(factor * attr.GetLeftSubIndent());
 208
 209         gint gindent;
 210         gint gsubindent;
 211
 212         if (subIndent >= 0)
 213         {
 214             gindent = indent;
 215             gsubindent = -subIndent;
 216         }
 217         else
 218         {
 219             gindent = -subIndent;
 220             gsubindent = indent;
 221         }
 222
 223         g_snprintf(buf, sizeof(buf), "WXINDENT %d %d", gindent, gsubindent);
 224         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 225                                         buf );
 226         if (!tag)
 227             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 228                                               "left-margin", gindent, "indent", gsubindent, NULL );
 229         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 230     }
 231
 232     if (attr.HasTabs())
 233     {
 234         // Set tab stops
 235
 236         // Clear old tabs
 237         GtkTextIter para_start, para_end = *end;
 238         gtk_text_buffer_get_iter_at_line( text_buffer,
 239                                           &para_start,
 240                                           gtk_text_iter_get_line(start) );
 241         gtk_text_iter_forward_line(&para_end);
 242
 243         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXTABS", start, end);
 244
 245         const wxArrayInt& tabs = attr.GetTabs();
 246
 247         wxString tagname = _T("WXTABS");
 248         g_snprintf(buf, sizeof(buf), "WXTABS");
 249         for (size_t i = 0; i < tabs.GetCount(); i++)
 250             tagname += wxString::Format(_T(" %d"), tabs[i]);
 251
 252         const wxWX2MBbuf buf = tagname.mb_str(wxConvUTF8);
 253
 254         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 255                                         buf );
 256         if (!tag)
 257         {
 258             // Factor to convert from 1/10th of a mm into pixels
 259             float factor;
 260 #if GTK_CHECK_VERSION(2,2,0)
 261             if (!gtk_check_version(2,2,0))
 262                 factor = (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 263                           gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 264             else
 265 #endif
 266                 factor = (float)gdk_screen_width() / gdk_screen_width_mm() / 10;
 267
 268             PangoTabArray* tabArray = pango_tab_array_new(tabs.GetCount(), TRUE);
 269             for (size_t i = 0; i < tabs.GetCount(); i++)
 270                 pango_tab_array_set_tab(tabArray, i, PANGO_TAB_LEFT, (gint)(tabs[i] * factor));
 271             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 272                                               "tabs", tabArray, NULL );
 273             pango_tab_array_free(tabArray);
 274         }
 275         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 276     }
 277 }
 278
 279 static void wxGtkTextInsert(GtkWidget *text,
 280                             GtkTextBuffer *text_buffer,
 281                             const wxTextAttr& attr,
 282                             const wxCharBuffer& buffer)
 283
 284 {
 285     gint start_offset;
 286     GtkTextIter iter, start;
 287
 288     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 289                                      gtk_text_buffer_get_insert (text_buffer) );
 290     start_offset = gtk_text_iter_get_offset (&iter);
 291     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 292
 293     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 294
 295     wxGtkTextApplyTagsFromAttr(text, text_buffer, attr, &start, &iter);
 296 }
 297
 298 // ----------------------------------------------------------------------------
 299 // "insert_text" for GtkEntry
 300 // ----------------------------------------------------------------------------
 301
 302 extern "C" {
 303 static void
 304 gtk_insert_text_callback(GtkEditable *editable,
 305                          const gchar *new_text,
 306                          gint new_text_length,
 307                          gint *position,
 308                          wxTextCtrl *win)
 309 {
 310     // we should only be called if we have a max len limit at all
 311     GtkEntry *entry = GTK_ENTRY (editable);
 312
 313     wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
 314
 315     // check that we don't overflow the max length limit
 316     //
 317     // FIXME: this doesn't work when we paste a string which is going to be
 318     //        truncated
 319     if ( entry->text_length == entry->text_max_length )
 320     {
 321         // we don't need to run the base class version at all
 322         g_signal_stop_emission_by_name (editable, "insert_text");
 323
 324         // remember that the next changed signal is to be ignored to avoid
 325         // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
 326         win->IgnoreNextTextUpdate();
 327
 328         // and generate the correct one ourselves
 329         wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
 330         event.SetEventObject(win);
 331         event.SetString(win->GetValue());
 332         win->GetEventHandler()->ProcessEvent( event );
 333     }
 334 }
 335 }
 336
 337 // Implementation of wxTE_AUTO_URL for wxGTK2 by Mart Raudsepp,
 338
 339 extern "C" {
 340 static void
 341 au_apply_tag_callback(GtkTextBuffer *buffer,
 342                       GtkTextTag *tag,
 343                       GtkTextIter *start,
 344                       GtkTextIter *end,
 345                       gpointer textctrl)
 346 {
 347     if(tag == gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl"))
 348         g_signal_stop_emission_by_name (buffer, "apply_tag");
 349 }
 350 }
 351
 352 //-----------------------------------------------------------------------------
 353 //  GtkTextCharPredicates for gtk_text_iter_*_find_char
 354 //-----------------------------------------------------------------------------
 355
 356 extern "C" {
 357 static gboolean
 358 pred_whitespace (gunichar ch, gpointer user_data)
 359 {
 360     return g_unichar_isspace(ch);
 361 }
 362 }
 363
 364 extern "C" {
 365 static gboolean
 366 pred_non_whitespace (gunichar ch, gpointer user_data)
 367 {
 368     return !g_unichar_isspace(ch);
 369 }
 370 }
 371
 372 extern "C" {
 373 static gboolean
 374 pred_nonpunct (gunichar ch, gpointer user_data)
 375 {
 376     return !g_unichar_ispunct(ch);
 377 }
 378 }
 379
 380 extern "C" {
 381 static gboolean
 382 pred_nonpunct_or_slash (gunichar ch, gpointer user_data)
 383 {
 384     return !g_unichar_ispunct(ch) || ch == '/';
 385 }
 386 }
 387
 388 //-----------------------------------------------------------------------------
 389 //  Check for links between s and e and correct tags as necessary
 390 //-----------------------------------------------------------------------------
 391
 392 // This function should be made match better while being efficient at one point.
 393 // Most probably with a row of regular expressions.
 394 extern "C" {
 395 static void
 396 au_check_word( GtkTextIter *s, GtkTextIter *e )
 397 {
 398     static const char *URIPrefixes[] =
 399     {
 400         "http://",
 401         "ftp://",
 402         "www.",
 403         "ftp.",
 404         "mailto://",
 405         "https://",
 406         "file://",
 407         "nntp://",
 408         "news://",
 409         "telnet://",
 410         "mms://",
 411         "gopher://",
 412         "prospero://",
 413         "wais://",
 414     };
 415
 416     GtkTextIter start = *s, end = *e;
 417     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 418
 419     // Get our special link tag
 420     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 421
 422     // Get rid of punctuation from beginning and end.
 423     // Might want to move this to au_check_range if an improved link checking doesn't
 424     // use some intelligent punctuation checking itself (beware of undesired iter modifications).
 425     if(g_unichar_ispunct( gtk_text_iter_get_char( &start ) ) )
 426         gtk_text_iter_forward_find_char( &start, pred_nonpunct, NULL, e );
 427
 428     gtk_text_iter_backward_find_char( &end, pred_nonpunct_or_slash, NULL, &start );
 429     gtk_text_iter_forward_char(&end);
 430
 431     gchar* text = gtk_text_iter_get_text( &start, &end );
 432     size_t len = strlen(text), prefix_len;
 433     size_t n;
 434
 435     for( n = 0; n < WXSIZEOF(URIPrefixes); ++n )
 436     {
 437         prefix_len = strlen(URIPrefixes[n]);
 438         if((len > prefix_len) && !strncasecmp(text, URIPrefixes[n], prefix_len))
 439             break;
 440     }
 441
 442     if(n < WXSIZEOF(URIPrefixes))
 443     {
 444         gulong signal_id = g_signal_handler_find (buffer,
 445                                                   (GSignalMatchType) (G_SIGNAL_MATCH_FUNC),
 446                                                   0, 0, NULL,
 447                                                   (gpointer)au_apply_tag_callback, NULL);
 448
 449         g_signal_handler_block (buffer, signal_id);
 450         gtk_text_buffer_apply_tag(buffer, tag, &start, &end);
 451         g_signal_handler_unblock (buffer, signal_id);
 452     }
 453 }
 454 }
 455
 456 extern "C" {
 457 static void
 458 au_check_range(GtkTextIter *s,
 459                GtkTextIter *range_end)
 460 {
 461     GtkTextIter range_start = *s;
 462     GtkTextIter word_end;
 463     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 464     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 465
 466     gtk_text_buffer_remove_tag(buffer, tag, s, range_end);
 467
 468     if(g_unichar_isspace(gtk_text_iter_get_char(&range_start)))
 469         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 470
 471     while(!gtk_text_iter_equal(&range_start, range_end))
 472     {
 473         word_end = range_start;
 474         gtk_text_iter_forward_find_char(&word_end, pred_whitespace, NULL, range_end);
 475
 476         // Now we should have a word delimited by range_start and word_end, correct link tags
 477         au_check_word(&range_start, &word_end);
 478
 479         range_start = word_end;
 480         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 481     }
 482 }
 483 }
 484
 485 //-----------------------------------------------------------------------------
 486 //  "insert-text" for GtkTextBuffer
 487 //-----------------------------------------------------------------------------
 488
 489 extern "C" {
 490 static void
 491 au_insert_text_callback(GtkTextBuffer *buffer,
 492                         GtkTextIter *end,
 493                         gchar *text,
 494                         gint len,
 495                         wxTextCtrl *win)
 496 {
 497     if (!len || !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 498         return;
 499
 500     GtkTextIter start = *end;
 501     gtk_text_iter_backward_chars(&start, g_utf8_strlen(text, len));
 502
 503     GtkTextIter line_start = start;
 504     GtkTextIter line_end = *end;
 505     GtkTextIter words_start = start;
 506     GtkTextIter words_end = *end;
 507
 508     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(&start));
 509     gtk_text_iter_forward_to_line_end(&line_end);
 510     gtk_text_iter_backward_find_char(&words_start, pred_whitespace, NULL, &line_start);
 511     gtk_text_iter_forward_find_char(&words_end, pred_whitespace, NULL, &line_end);
 512
 513     au_check_range(&words_start, &words_end);
 514 }
 515 }
 516
 517 //-----------------------------------------------------------------------------
 518 //  "delete-range" for GtkTextBuffer
 519 //-----------------------------------------------------------------------------
 520
 521 extern "C" {
 522 static void
 523 au_delete_range_callback(GtkTextBuffer *buffer,
 524                          GtkTextIter *start,
 525                          GtkTextIter *end,
 526                          wxTextCtrl *win)
 527 {
 528     if( !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 529         return;
 530
 531     GtkTextIter line_start = *start, line_end = *end;
 532
 533     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(start));
 534     gtk_text_iter_forward_to_line_end(&line_end);
 535     gtk_text_iter_backward_find_char(start, pred_whitespace, NULL, &line_start);
 536     gtk_text_iter_forward_find_char(end, pred_whitespace, NULL, &line_end);
 537
 538     au_check_range(start, end);
 539 }
 540 }
 541
 542
 543 //-----------------------------------------------------------------------------
 544 //  "changed"
 545 //-----------------------------------------------------------------------------
 546
 547 extern "C" {
 548 static void
 549 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
 550 {
 551     if ( win->IgnoreTextUpdate() )
 552         return;
 553
 554     if (!win->m_hasVMT) return;
 555
 556     if ( win->MarkDirtyOnChange() )
 557         win->MarkDirty();
 558
 559     win->SendTextUpdatedEvent();
 560 }
 561 }
 562
 563 //-----------------------------------------------------------------------------
 564 //  clipboard events: "copy-clipboard", "cut-clipboard", "paste-clipboard"
 565 //-----------------------------------------------------------------------------
 566
 567 // common part of the event handlers below
 568 static void
 569 handle_text_clipboard_callback( GtkWidget *widget, wxTextCtrl *win,
 570                                 wxEventType eventType, const gchar * signal_name)
 571 {
 572     wxClipboardTextEvent event( eventType, win->GetId() );
 573     event.SetEventObject( win );
 574     if ( win->GetEventHandler()->ProcessEvent( event ) )
 575     {
 576         // don't let the default processing to take place if we did something
 577         // ourselves in the event handler
 578         g_signal_stop_emission_by_name (widget, signal_name);
 579     }
 580 }
 581
 582 extern "C" {
 583 static void
 584 gtk_copy_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 585 {
 586     handle_text_clipboard_callback(
 587         widget, win, wxEVT_COMMAND_TEXT_COPY, "copy-clipboard" );
 588 }
 589
 590 static void
 591 gtk_cut_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 592 {
 593     handle_text_clipboard_callback(
 594         widget, win, wxEVT_COMMAND_TEXT_CUT, "cut-clipboard" );
 595 }
 596
 597 static void
 598 gtk_paste_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 599 {
 600     handle_text_clipboard_callback(
 601         widget, win, wxEVT_COMMAND_TEXT_PASTE, "paste-clipboard" );
 602 }
 603 }
 604
 605 //-----------------------------------------------------------------------------
 606 // "expose_event" from scrolled window and textview
 607 //-----------------------------------------------------------------------------
 608
 609 extern "C" {
 610 static gboolean
 611 gtk_text_exposed_callback( GtkWidget *widget, GdkEventExpose *event, wxTextCtrl *win )
 612 {
 613     return TRUE;
 614 }
 615 }
 616
 617
 618 //-----------------------------------------------------------------------------
 619 //  wxTextCtrl
 620 //-----------------------------------------------------------------------------
 621
 622 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 623
 624 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 625     EVT_CHAR(wxTextCtrl::OnChar)
 626
 627     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 628     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 629     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 630     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 631     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 632
 633     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 634     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 635     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 636     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 637     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 638
 639     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 640     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 641     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 642     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 643     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 644     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 645     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 646     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 647     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 648 END_EVENT_TABLE()
 649
 650 void wxTextCtrl::Init()
 651 {
 652     m_dontMarkDirty =
 653     m_modified = false;
 654
 655     m_countUpdatesToIgnore = 0;
 656
 657     SetUpdateFont(false);
 658
 659     m_text = NULL;
 660     m_freezeCount = 0;
 661     m_showPositionOnThaw = NULL;
 662     m_gdkHandCursor = NULL;
 663     m_gdkXTermCursor = NULL;
 664 }
 665
 666 wxTextCtrl::~wxTextCtrl()
 667 {
 668     if(m_gdkHandCursor)
 669         gdk_cursor_unref(m_gdkHandCursor);
 670     if(m_gdkXTermCursor)
 671         gdk_cursor_unref(m_gdkXTermCursor);
 672 }
 673
 674 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 675                         wxWindowID id,
 676                         const wxString &value,
 677                         const wxPoint &pos,
 678                         const wxSize &size,
 679                         long style,
 680                         const wxValidator& validator,
 681                         const wxString &name )
 682 {
 683     Init();
 684
 685     Create( parent, id, value, pos, size, style, validator, name );
 686 }
 687
 688 bool wxTextCtrl::Create( wxWindow *parent,
 689                          wxWindowID id,
 690                          const wxString &value,
 691                          const wxPoint &pos,
 692                          const wxSize &size,
 693                          long style,
 694                          const wxValidator& validator,
 695                          const wxString &name )
 696 {
 697     if (!PreCreation( parent, pos, size ) ||
 698         !CreateBase( parent, id, pos, size, style, validator, name ))
 699     {
 700         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 701         return false;
 702     }
 703
 704     bool multi_line = (style & wxTE_MULTILINE) != 0;
 705
 706     if (multi_line)
 707     {
 708         // Create view
 709         m_text = gtk_text_view_new();
 710
 711         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 712
 713         // create "ShowPosition" marker
 714         GtkTextIter iter;
 715         gtk_text_buffer_get_start_iter(m_buffer, &iter);
 716         gtk_text_buffer_create_mark(m_buffer, "ShowPosition", &iter, true);
 717
 718         // create scrolled window
 719         m_widget = gtk_scrolled_window_new( NULL, NULL );
 720         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 721                                         GTK_POLICY_AUTOMATIC,
 722                                         style & wxTE_NO_VSCROLL
 723                                             ? GTK_POLICY_NEVER
 724                                             : GTK_POLICY_AUTOMATIC );
 725         // for ScrollLines/Pages
 726         m_scrollBar[1] = (GtkRange*)((GtkScrolledWindow*)m_widget)->vscrollbar;
 727
 728         // Insert view into scrolled window
 729         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 730
 731         GTKSetWrapMode();
 732
 733         GtkScrolledWindowSetBorder(m_widget, style);
 734
 735         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 736
 737         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 738     }
 739     else
 740     {
 741         // a single-line text control: no need for scrollbars
 742         m_widget =
 743         m_text = gtk_entry_new();
 744
 745         if (style & wxNO_BORDER)
 746             g_object_set (m_text, "has-frame", FALSE, NULL);
 747     }
 748
 749     m_parent->DoAddChild( this );
 750
 751     m_focusWidget = m_text;
 752
 753     PostCreation(size);
 754
 755     if (multi_line)
 756     {
 757         gtk_widget_show(m_text);
 758     }
 759
 760     if (!value.empty())
 761     {
 762         SetValue( value );
 763     }
 764
 765     if (style & wxTE_PASSWORD)
 766         GTKSetVisibility();
 767
 768     if (style & wxTE_READONLY)
 769         GTKSetEditable();
 770
 771     // left justification (alignment) is the default anyhow
 772     if ( style & (wxTE_RIGHT | wxTE_CENTRE) )
 773         GTKSetJustification();
 774
 775     // We want to be notified about text changes.
 776     if (multi_line)
 777     {
 778         g_signal_connect (m_buffer, "changed",
 779                           G_CALLBACK (gtk_text_changed_callback), this);
 780
 781         // .. and handle URLs on multi-line controls with wxTE_AUTO_URL style
 782         if (style & wxTE_AUTO_URL)
 783         {
 784             GtkTextIter start, end;
 785             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 786             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 787
 788             // We create our wxUrl tag here for slight efficiency gain - we
 789             // don't have to check for the tag existance in callbacks,
 790             // hereby it's guaranteed to exist.
 791             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 792                                        "foreground", "blue",
 793                                        "underline", PANGO_UNDERLINE_SINGLE,
 794                                        NULL);
 795
 796             // Check for URLs after each text change
 797             g_signal_connect_after (m_buffer, "insert_text",
 798                                     G_CALLBACK (au_insert_text_callback), this);
 799             g_signal_connect_after (m_buffer, "delete_range",
 800                                     G_CALLBACK (au_delete_range_callback), this);
 801
 802             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 803             // block this callback temporarily. This takes care of gtk+ internal
 804             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 805             // which is undesired because only a part of the URL might be copied.
 806             // The insert-text signal emitted inside it will take care of newly formed
 807             // or wholly copied URLs.
 808             g_signal_connect (m_buffer, "apply_tag",
 809                               G_CALLBACK (au_apply_tag_callback), NULL);
 810
 811             // Check for URLs in the initial string passed to Create
 812             gtk_text_buffer_get_start_iter(m_buffer, &start);
 813             gtk_text_buffer_get_end_iter(m_buffer, &end);
 814             au_check_range(&start, &end);
 815         }
 816     }
 817     else
 818     {
 819         g_signal_connect (m_text, "changed",
 820                           G_CALLBACK (gtk_text_changed_callback), this);
 821     }
 822
 823     g_signal_connect (m_text, "copy-clipboard",
 824                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 825     g_signal_connect (m_text, "cut-clipboard",
 826                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 827     g_signal_connect (m_text, "paste-clipboard",
 828                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 829
 830     m_cursor = wxCursor( wxCURSOR_IBEAM );
 831
 832     return true;
 833 }
 834
 835 // ----------------------------------------------------------------------------
 836 // flags handling
 837 // ----------------------------------------------------------------------------
 838
 839 void wxTextCtrl::GTKSetEditable()
 840 {
 841     gboolean editable = !HasFlag(wxTE_READONLY);
 842     if ( IsSingleLine() )
 843         gtk_editable_set_editable(GTK_EDITABLE(m_text), editable);
 844     else
 845         gtk_text_view_set_editable(GTK_TEXT_VIEW(m_text), editable);
 846 }
 847
 848 void wxTextCtrl::GTKSetVisibility()
 849 {
 850     // VZ: shouldn't we assert if wxTE_PASSWORD is set for multiline control?
 851     if ( IsSingleLine() )
 852         gtk_entry_set_visibility(GTK_ENTRY(m_text), !HasFlag(wxTE_PASSWORD));
 853 }
 854
 855 void wxTextCtrl::GTKSetWrapMode()
 856 {
 857     // no wrapping in single line controls
 858     if ( !IsMultiLine() )
 859         return;
 860
 861     // translate wx wrapping style to GTK+
 862     GtkWrapMode wrap;
 863     if ( HasFlag( wxTE_DONTWRAP ) )
 864         wrap = GTK_WRAP_NONE;
 865     else if ( HasFlag( wxTE_CHARWRAP ) )
 866         wrap = GTK_WRAP_CHAR;
 867     else if ( HasFlag( wxTE_WORDWRAP ) )
 868         wrap = GTK_WRAP_WORD;
 869     else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 870     {
 871         // GTK_WRAP_WORD_CHAR seems to be new in GTK+ 2.4
 872 #ifdef __WXGTK24__
 873         if ( !gtk_check_version(2,4,0) )
 874         {
 875             wrap = GTK_WRAP_WORD_CHAR;
 876         }
 877         else
 878 #endif // __WXGTK24__
 879         wrap = GTK_WRAP_WORD;
 880     }
 881
 882     gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 883 }
 884
 885 void wxTextCtrl::GTKSetJustification()
 886 {
 887     if ( IsMultiLine() )
 888     {
 889         GtkJustification just;
 890         if ( HasFlag(wxTE_RIGHT) )
 891             just = GTK_JUSTIFY_RIGHT;
 892         else if ( HasFlag(wxTE_CENTRE) )
 893             just = GTK_JUSTIFY_CENTER;
 894         else // wxTE_LEFT == 0
 895             just = GTK_JUSTIFY_LEFT;
 896
 897         gtk_text_view_set_justification(GTK_TEXT_VIEW(m_text), just);
 898     }
 899     else // single line
 900     {
 901 #ifdef __WXGTK24__
 902         // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 903         if (!gtk_check_version(2,4,0))
 904         {
 905             gfloat align;
 906             if ( HasFlag(wxTE_RIGHT) )
 907                 align = 1.0;
 908             else if ( HasFlag(wxTE_CENTRE) )
 909                 align = 0.5;
 910             else // single line
 911                 align = 0.0;
 912
 913             gtk_entry_set_alignment(GTK_ENTRY(m_text), align);
 914         }
 915 #endif // __WXGTK24__
 916     }
 917
 918 }
 919
 920 void wxTextCtrl::SetWindowStyleFlag(long style)
 921 {
 922     long styleOld = GetWindowStyleFlag();
 923
 924     wxTextCtrlBase::SetWindowStyleFlag(style);
 925
 926     if ( (style & wxTE_READONLY) != (styleOld & wxTE_READONLY) )
 927         GTKSetEditable();
 928
 929     if ( (style & wxTE_PASSWORD) != (styleOld & wxTE_PASSWORD) )
 930         GTKSetVisibility();
 931
 932     static const long flagsWrap = wxTE_WORDWRAP | wxTE_CHARWRAP | wxTE_DONTWRAP;
 933     if ( (style & flagsWrap) != (styleOld & flagsWrap) )
 934         GTKSetWrapMode();
 935
 936     static const long flagsAlign = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 937     if ( (style & flagsAlign) != (styleOld & flagsAlign) )
 938         GTKSetJustification();
 939 }
 940
 941 // ----------------------------------------------------------------------------
 942 // control value
 943 // ----------------------------------------------------------------------------
 944
 945 wxString wxTextCtrl::GetValue() const
 946 {
 947     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 948
 949     wxString tmp;
 950     if ( IsMultiLine() )
 951     {
 952         GtkTextIter start;
 953         gtk_text_buffer_get_start_iter( m_buffer, &start );
 954         GtkTextIter end;
 955         gtk_text_buffer_get_end_iter( m_buffer, &end );
 956         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 957
 958         const wxWxCharBuffer buf = wxGTK_CONV_BACK(text);
 959         if ( buf )
 960             tmp = buf;
 961     }
 962     else
 963     {
 964         const gchar *text = gtk_entry_get_text( GTK_ENTRY(m_text) );
 965         const wxWxCharBuffer buf = wxGTK_CONV_BACK( text );
 966         if ( buf )
 967             tmp = buf;
 968     }
 969
 970     return tmp;
 971 }
 972
 973 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 974 {
 975     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 976     // encoding?
 977
 978     // first check the default text style (we intentionally don't check the
 979     // style for the current position as it doesn't make sense for SetValue())
 980     const wxTextAttr& style = GetDefaultStyle();
 981     wxFontEncoding enc = style.HasFont() ? style.GetFont().GetEncoding()
 982                                          : wxFONTENCODING_SYSTEM;
 983
 984     // fall back to the controls font if no style
 985     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 986         enc = GetFont().GetEncoding();
 987
 988     return enc;
 989 }
 990
 991 bool wxTextCtrl::IsEmpty() const
 992 {
 993     if ( IsMultiLine() )
 994         return gtk_text_buffer_get_char_count(m_buffer) == 0;
 995
 996     return wxTextCtrlBase::IsEmpty();
 997 }
 998
 999 void wxTextCtrl::DoSetValue( const wxString &value, int flags )
1000 {
1001     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1002
1003     // the control won't be modified any more as we programmatically replace
1004     // all the existing text, so reset the flag and don't set it again (and do
1005     // it now, before the text event handler is ran so that IsModified() called
1006     // from there returns the expected value)
1007     m_modified = false;
1008     DontMarkDirtyOnNextChange();
1009
1010     wxFontEncoding enc = m_defaultStyle.HasFont()
1011                             ? m_defaultStyle.GetFont().GetEncoding()
1012                             : wxFONTENCODING_SYSTEM;
1013     if ( enc == wxFONTENCODING_SYSTEM )
1014         enc = GetTextEncoding();
1015
1016     const wxCharBuffer buffer(wxGTK_CONV_ENC(value, enc));
1017     if ( !buffer )
1018     {
1019         // see comment in WriteText() as to why we must warn the user about
1020         // this
1021         wxLogWarning(_("Failed to set text in the text control."));
1022         return;
1023     }
1024
1025     // if the control is not empty, two "changed" signals are emitted,
1026     // otherwise only one and we need to ignore either both or one of them
1027     int ignore = flags & SetValue_SendEvent ? 0 : 1;
1028     if ( !IsEmpty() )
1029         ignore++;
1030
1031     if ( ignore )
1032         IgnoreNextTextUpdate(ignore);
1033
1034     if ( IsMultiLine() )
1035     {
1036         gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
1037
1038         if ( !m_defaultStyle.IsDefault() )
1039         {
1040             GtkTextIter start, end;
1041             gtk_text_buffer_get_bounds( m_buffer, &start, &end );
1042             wxGtkTextApplyTagsFromAttr(m_widget, m_buffer, m_defaultStyle,
1043                                        &start, &end);
1044         }
1045     }
1046     else // single line
1047     {
1048         gtk_entry_set_text( GTK_ENTRY(m_text), buffer );
1049     }
1050
1051     // if, for whatever reason, the callback wasn't called the expected number
1052     // of times, still reset the flags to the default values
1053     m_dontMarkDirty = false;
1054     m_countUpdatesToIgnore = 0;
1055
1056
1057     // GRG, Jun/2000: Changed this after a lot of discussion in
1058     //   the lists. wxWidgets 2.2 will have a set of flags to
1059     //   customize this behaviour.
1060     SetInsertionPoint(0);
1061 }
1062
1063 void wxTextCtrl::WriteText( const wxString &text )
1064 {
1065     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1066
1067     if ( text.empty() )
1068         return;
1069
1070     // check if we have a specific style for the current position
1071     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
1072     wxTextAttr style;
1073     if ( GetStyle(GetInsertionPoint(), style) && style.HasFont() )
1074     {
1075         enc = style.GetFont().GetEncoding();
1076     }
1077
1078     if ( enc == wxFONTENCODING_SYSTEM )
1079         enc = GetTextEncoding();
1080
1081     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
1082     if ( !buffer )
1083     {
1084         // we must log an error here as losing the text like this can be a
1085         // serious problem (e.g. imagine the document edited by user being
1086         // empty instead of containing the correct text)
1087         wxLogWarning(_("Failed to insert text in the control."));
1088         return;
1089     }
1090
1091     // we're changing the text programmatically
1092     DontMarkDirtyOnNextChange();
1093
1094     if ( IsMultiLine() )
1095     {
1096         // First remove the selection if there is one
1097         // TODO:  Is there an easier GTK specific way to do this?
1098         long from, to;
1099         GetSelection(&from, &to);
1100         if (from != to)
1101             Remove(from, to);
1102
1103         // Insert the text
1104         wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
1105
1106         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
1107         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
1108         // won't work when frozen, text view is not using m_buffer then
1109         if (!IsFrozen() && wxIsSameDouble(adj->value, adj->upper - adj->page_size))
1110         {
1111             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
1112                     gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
1113         }
1114     }
1115     else // single line
1116     {
1117         // First remove the selection if there is one
1118         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
1119
1120         // This moves the cursor pos to behind the inserted text.
1121         gint len = gtk_editable_get_position(GTK_EDITABLE(m_text));
1122
1123         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
1124
1125         // Bring entry's cursor uptodate.
1126         gtk_editable_set_position( GTK_EDITABLE(m_text), len );
1127     }
1128 }
1129
1130 void wxTextCtrl::AppendText( const wxString &text )
1131 {
1132     SetInsertionPointEnd();
1133     WriteText( text );
1134 }
1135
1136 wxString wxTextCtrl::GetLineText( long lineNo ) const
1137 {
1138     wxString result;
1139     if ( IsMultiLine() )
1140     {
1141         GtkTextIter line;
1142         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
1143
1144         GtkTextIter end = line;
1145         // avoid skipping to the next line end if this one is empty
1146         if ( !gtk_text_iter_ends_line(&line) )
1147             gtk_text_iter_forward_to_line_end(&end);
1148
1149         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
1150         result = wxGTK_CONV_BACK(text);
1151     }
1152     else
1153     {
1154         if (lineNo == 0)
1155             result = GetValue();
1156     }
1157     return result;
1158 }
1159
1160 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
1161 {
1162   /* If you implement this, don't forget to update the documentation!
1163    * (file docs/latex/wx/text.tex) */
1164     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
1165 }
1166
1167 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
1168 {
1169     if ( IsMultiLine() )
1170     {
1171         GtkTextIter iter;
1172
1173         if (pos > GetLastPosition())
1174             return false;
1175
1176         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
1177
1178         if ( y )
1179             *y = gtk_text_iter_get_line(&iter);
1180         if ( x )
1181             *x = gtk_text_iter_get_line_offset(&iter);
1182     }
1183     else // single line control
1184     {
1185         if ( pos <= GTK_ENTRY(m_text)->text_length )
1186         {
1187             if ( y )
1188                 *y = 0;
1189             if ( x )
1190                 *x = pos;
1191         }
1192         else
1193         {
1194             // index out of bounds
1195             return false;
1196         }
1197     }
1198
1199     return true;
1200 }
1201
1202 long wxTextCtrl::XYToPosition(long x, long y ) const
1203 {
1204     if ( IsSingleLine() )
1205         return 0;
1206
1207     GtkTextIter iter;
1208     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1209         return -1;
1210
1211     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1212     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1213         return -1;
1214
1215     return gtk_text_iter_get_offset(&iter) + x;
1216 }
1217
1218 int wxTextCtrl::GetLineLength(long lineNo) const
1219 {
1220     if ( IsMultiLine() )
1221     {
1222         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1223         if (lineNo > last_line)
1224             return -1;
1225
1226         GtkTextIter iter;
1227         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1228         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1229         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1230     }
1231     else
1232     {
1233         wxString str = GetLineText (lineNo);
1234         return (int) str.length();
1235     }
1236 }
1237
1238 int wxTextCtrl::GetNumberOfLines() const
1239 {
1240     if ( IsMultiLine() )
1241     {
1242         return gtk_text_buffer_get_line_count( m_buffer );
1243     }
1244     else // single line
1245     {
1246         return 1;
1247     }
1248 }
1249
1250 void wxTextCtrl::SetInsertionPoint( long pos )
1251 {
1252     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1253
1254     if ( IsMultiLine() )
1255     {
1256         GtkTextIter iter;
1257         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1258         gtk_text_buffer_place_cursor( m_buffer, &iter );
1259         GtkTextMark* mark = gtk_text_buffer_get_insert(m_buffer);
1260         if (IsFrozen())
1261             // defer until Thaw, text view is not using m_buffer now
1262             m_showPositionOnThaw = mark;
1263         else
1264             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1265     }
1266     else
1267     {
1268         // FIXME: Is the editable's cursor really uptodate without double set_position in GTK2?
1269         gtk_editable_set_position(GTK_EDITABLE(m_text), int(pos));
1270     }
1271 }
1272
1273 void wxTextCtrl::SetInsertionPointEnd()
1274 {
1275     SetInsertionPoint(-1);
1276 }
1277
1278 void wxTextCtrl::SetEditable( bool editable )
1279 {
1280     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1281
1282     if ( IsMultiLine() )
1283     {
1284         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1285     }
1286     else
1287     {
1288         gtk_editable_set_editable( GTK_EDITABLE(m_text), editable );
1289     }
1290 }
1291
1292 bool wxTextCtrl::Enable( bool enable )
1293 {
1294     if (!wxWindowBase::Enable(enable))
1295     {
1296         // nothing to do
1297         return false;
1298     }
1299
1300     if ( IsMultiLine() )
1301     {
1302         SetEditable( enable );
1303     }
1304     else
1305     {
1306         gtk_widget_set_sensitive( m_text, enable );
1307     }
1308
1309     return true;
1310 }
1311
1312 // wxGTK-specific: called recursively by Enable,
1313 // to give widgets an opportunity to correct their colours after they
1314 // have been changed by Enable
1315 void wxTextCtrl::OnEnabled( bool enable )
1316 {
1317     // If we have a custom background colour, we use this colour in both
1318     // disabled and enabled mode, or we end up with a different colour under the
1319     // text.
1320     wxColour oldColour = GetBackgroundColour();
1321     if (oldColour.Ok())
1322     {
1323         // Need to set twice or it'll optimize the useful stuff out
1324         if (oldColour == * wxWHITE)
1325             SetBackgroundColour(*wxBLACK);
1326         else
1327             SetBackgroundColour(*wxWHITE);
1328         SetBackgroundColour(oldColour);
1329     }
1330 }
1331
1332 void wxTextCtrl::MarkDirty()
1333 {
1334     m_modified = true;
1335 }
1336
1337 void wxTextCtrl::DiscardEdits()
1338 {
1339     m_modified = false;
1340 }
1341
1342 // ----------------------------------------------------------------------------
1343 // max text length support
1344 // ----------------------------------------------------------------------------
1345
1346 bool wxTextCtrl::IgnoreTextUpdate()
1347 {
1348     if ( m_countUpdatesToIgnore > 0 )
1349     {
1350         m_countUpdatesToIgnore--;
1351
1352         return true;
1353     }
1354
1355     return false;
1356 }
1357
1358 bool wxTextCtrl::MarkDirtyOnChange()
1359 {
1360     if ( m_dontMarkDirty )
1361     {
1362         m_dontMarkDirty = false;
1363
1364         return false;
1365     }
1366
1367     return true;
1368 }
1369
1370 void wxTextCtrl::SetMaxLength(unsigned long len)
1371 {
1372     if ( !HasFlag(wxTE_MULTILINE) )
1373     {
1374         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
1375
1376         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
1377         // we had tried to enter more text than allowed by max text length and
1378         // the text wasn't really changed
1379         //
1380         // to detect this and generate TEXT_MAXLEN event instead of
1381         // TEXT_CHANGED one in this case we also catch "insert_text" signal
1382         //
1383         // when max len is set to 0 we disconnect our handler as it means that
1384         // we shouldn't check anything any more
1385         if ( len )
1386         {
1387             g_signal_connect (m_text, "insert_text",
1388                               G_CALLBACK (gtk_insert_text_callback), this);
1389         }
1390         else // no checking
1391         {
1392             g_signal_handlers_disconnect_by_func (m_text,
1393                     (gpointer) gtk_insert_text_callback, this);
1394         }
1395     }
1396 }
1397
1398 void wxTextCtrl::SetSelection( long from, long to )
1399 {
1400     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1401
1402     if (from == -1 && to == -1)
1403     {
1404         from = 0;
1405         to = GetValue().length();
1406     }
1407
1408     if ( IsMultiLine() )
1409     {
1410         GtkTextIter fromi, toi;
1411         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1412         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1413
1414         gtk_text_buffer_place_cursor( m_buffer, &toi );
1415         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1416     }
1417     else
1418     {
1419         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1420     }
1421 }
1422
1423 void wxTextCtrl::ShowPosition( long pos )
1424 {
1425     if (IsMultiLine())
1426     {
1427         GtkTextIter iter;
1428         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, int(pos));
1429         GtkTextMark* mark = gtk_text_buffer_get_mark(m_buffer, "ShowPosition");
1430         gtk_text_buffer_move_mark(m_buffer, mark, &iter);
1431         if (IsFrozen())
1432             // defer until Thaw, text view is not using m_buffer now
1433             m_showPositionOnThaw = mark;
1434         else
1435             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1436     }
1437 }
1438
1439 wxTextCtrlHitTestResult
1440 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1441 {
1442     if ( !IsMultiLine() )
1443     {
1444         // not supported
1445         return wxTE_HT_UNKNOWN;
1446     }
1447
1448     int x, y;
1449     gtk_text_view_window_to_buffer_coords
1450     (
1451         GTK_TEXT_VIEW(m_text),
1452         GTK_TEXT_WINDOW_TEXT,
1453         pt.x, pt.y,
1454         &x, &y
1455     );
1456
1457     GtkTextIter iter;
1458     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1459     if ( pos )
1460         *pos = gtk_text_iter_get_offset(&iter);
1461
1462     return wxTE_HT_ON_TEXT;
1463 }
1464
1465 long wxTextCtrl::GetInsertionPoint() const
1466 {
1467     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1468
1469     if ( IsMultiLine() )
1470     {
1471         // There is no direct accessor for the cursor, but
1472         // internally, the cursor is the "mark" called
1473         // "insert" in the text view's btree structure.
1474
1475         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1476         GtkTextIter cursor;
1477         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1478
1479         return gtk_text_iter_get_offset( &cursor );
1480     }
1481     else
1482     {
1483         return (long) gtk_editable_get_position(GTK_EDITABLE(m_text));
1484     }
1485 }
1486
1487 wxTextPos wxTextCtrl::GetLastPosition() const
1488 {
1489     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1490
1491     int pos = 0;
1492
1493     if ( IsMultiLine() )
1494     {
1495         GtkTextIter end;
1496         gtk_text_buffer_get_end_iter( m_buffer, &end );
1497
1498         pos = gtk_text_iter_get_offset( &end );
1499     }
1500     else
1501     {
1502         pos = GTK_ENTRY(m_text)->text_length;
1503     }
1504
1505     return (long)pos;
1506 }
1507
1508 void wxTextCtrl::Remove( long from, long to )
1509 {
1510     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1511
1512     if ( IsMultiLine() )
1513     {
1514         GtkTextIter fromi, toi;
1515         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1516         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1517
1518         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1519     }
1520     else // single line
1521         gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1522 }
1523
1524 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1525 {
1526     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1527
1528     Remove( from, to );
1529
1530     if (!value.empty())
1531     {
1532         SetInsertionPoint( from );
1533         WriteText( value );
1534     }
1535 }
1536
1537 void wxTextCtrl::Cut()
1538 {
1539     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1540
1541     if ( IsMultiLine() )
1542         g_signal_emit_by_name (m_text, "cut-clipboard");
1543     else
1544         gtk_editable_cut_clipboard(GTK_EDITABLE(m_text));
1545 }
1546
1547 void wxTextCtrl::Copy()
1548 {
1549     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1550
1551     if ( IsMultiLine() )
1552         g_signal_emit_by_name (m_text, "copy-clipboard");
1553     else
1554         gtk_editable_copy_clipboard(GTK_EDITABLE(m_text));
1555 }
1556
1557 void wxTextCtrl::Paste()
1558 {
1559     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1560
1561     if ( IsMultiLine() )
1562         g_signal_emit_by_name (m_text, "paste-clipboard");
1563     else
1564         gtk_editable_paste_clipboard(GTK_EDITABLE(m_text));
1565 }
1566
1567 // Undo/redo
1568 void wxTextCtrl::Undo()
1569 {
1570     // TODO
1571     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1572 }
1573
1574 void wxTextCtrl::Redo()
1575 {
1576     // TODO
1577     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1578 }
1579
1580 bool wxTextCtrl::CanUndo() const
1581 {
1582     // TODO
1583     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1584     return false;
1585 }
1586
1587 bool wxTextCtrl::CanRedo() const
1588 {
1589     // TODO
1590     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1591     return false;
1592 }
1593
1594 // If the return values from and to are the same, there is no
1595 // selection.
1596 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1597 {
1598     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1599
1600     gint from = -1;
1601     gint to = -1;
1602     bool haveSelection = false;
1603
1604      if ( IsMultiLine() )
1605      {
1606          GtkTextIter ifrom, ito;
1607          if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1608          {
1609              haveSelection = true;
1610              from = gtk_text_iter_get_offset(&ifrom);
1611              to = gtk_text_iter_get_offset(&ito);
1612          }
1613      }
1614      else  // not multi-line
1615      {
1616          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1617                                                  &from, &to) )
1618          {
1619              haveSelection = true;
1620          }
1621      }
1622
1623      if (! haveSelection )
1624           from = to = GetInsertionPoint();
1625
1626      if ( from > to )
1627      {
1628          // exchange them to be compatible with wxMSW
1629          gint tmp = from;
1630          from = to;
1631          to = tmp;
1632      }
1633
1634     if ( fromOut )
1635         *fromOut = from;
1636     if ( toOut )
1637         *toOut = to;
1638 }
1639
1640
1641 bool wxTextCtrl::IsEditable() const
1642 {
1643     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1644
1645     if ( IsMultiLine() )
1646     {
1647         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1648     }
1649     else
1650     {
1651         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1652     }
1653 }
1654
1655 bool wxTextCtrl::IsModified() const
1656 {
1657     return m_modified;
1658 }
1659
1660 void wxTextCtrl::Clear()
1661 {
1662     SetValue( wxEmptyString );
1663 }
1664
1665 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1666 {
1667     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1668
1669     if ( key_event.GetKeyCode() == WXK_RETURN )
1670     {
1671         if ( HasFlag(wxTE_PROCESS_ENTER) )
1672         {
1673             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1674             event.SetEventObject(this);
1675             event.SetString(GetValue());
1676             if ( GetEventHandler()->ProcessEvent(event) )
1677                 return;
1678         }
1679
1680         // FIXME: this is not the right place to do it, wxDialog::OnCharHook()
1681         //        probably is
1682         if ( IsSingleLine() )
1683         {
1684             // This will invoke the dialog default action, such
1685             // as the clicking the default button.
1686
1687             wxWindow *top_frame = m_parent;
1688             while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1689                 top_frame = top_frame->GetParent();
1690
1691             if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1692             {
1693                 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1694
1695                 if (window->default_widget)
1696                 {
1697                     gtk_widget_activate (window->default_widget);
1698                     return;
1699                 }
1700             }
1701         }
1702     }
1703
1704     key_event.Skip();
1705 }
1706
1707 GtkWidget* wxTextCtrl::GetConnectWidget()
1708 {
1709     return GTK_WIDGET(m_text);
1710 }
1711
1712 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1713 {
1714     if ( IsMultiLine() )
1715     {
1716         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1717                                         GTK_TEXT_WINDOW_TEXT );
1718     }
1719     else
1720     {
1721         return GTK_ENTRY(m_text)->text_area;
1722     }
1723 }
1724
1725 // the font will change for subsequent text insertiongs
1726 bool wxTextCtrl::SetFont( const wxFont &font )
1727 {
1728     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1729
1730     if ( !wxTextCtrlBase::SetFont(font) )
1731     {
1732         // font didn't change, nothing to do
1733         return false;
1734     }
1735
1736     if ( IsMultiLine() )
1737     {
1738         SetUpdateFont(true);
1739
1740         m_defaultStyle.SetFont(font);
1741
1742         ChangeFontGlobally();
1743     }
1744
1745     return true;
1746 }
1747
1748 void wxTextCtrl::ChangeFontGlobally()
1749 {
1750     // this method is very inefficient and hence should be called as rarely as
1751     // possible!
1752     //
1753     // TODO: it can be implemented much more efficiently for GTK2
1754     wxASSERT_MSG( IsMultiLine(),
1755                   _T("shouldn't be called for single line controls") );
1756
1757     wxString value = GetValue();
1758     if ( !value.empty() )
1759     {
1760         SetUpdateFont(false);
1761
1762         Clear();
1763         AppendText(value);
1764     }
1765 }
1766
1767 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1768 {
1769     if ( !wxControl::SetForegroundColour(colour) )
1770         return false;
1771
1772     // update default fg colour too
1773     m_defaultStyle.SetTextColour(colour);
1774
1775     return true;
1776 }
1777
1778 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1779 {
1780     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1781
1782     if ( !wxControl::SetBackgroundColour( colour ) )
1783         return false;
1784
1785     if (!m_backgroundColour.Ok())
1786         return false;
1787
1788     // change active background color too
1789     m_defaultStyle.SetBackgroundColour( colour );
1790
1791     return true;
1792 }
1793
1794 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1795 {
1796     if ( IsMultiLine() )
1797     {
1798         if ( style.IsDefault() )
1799         {
1800             // nothing to do
1801             return true;
1802         }
1803
1804         gint l = gtk_text_buffer_get_char_count( m_buffer );
1805
1806         wxCHECK_MSG( start >= 0 && end <= l, false,
1807                      _T("invalid range in wxTextCtrl::SetStyle") );
1808
1809         GtkTextIter starti, endi;
1810         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1811         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1812
1813         wxGtkTextApplyTagsFromAttr( m_widget, m_buffer, style, &starti, &endi );
1814
1815         return true;
1816     }
1817     //else: single line text controls don't support styles
1818
1819     return false;
1820 }
1821
1822 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1823 {
1824     gtk_widget_modify_style(m_text, style);
1825 }
1826
1827 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1828 {
1829     Cut();
1830 }
1831
1832 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1833 {
1834     Copy();
1835 }
1836
1837 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1838 {
1839     Paste();
1840 }
1841
1842 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1843 {
1844     Undo();
1845 }
1846
1847 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1848 {
1849     Redo();
1850 }
1851
1852 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1853 {
1854     event.Enable( CanCut() );
1855 }
1856
1857 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1858 {
1859     event.Enable( CanCopy() );
1860 }
1861
1862 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1863 {
1864     event.Enable( CanPaste() );
1865 }
1866
1867 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1868 {
1869     event.Enable( CanUndo() );
1870 }
1871
1872 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1873 {
1874     event.Enable( CanRedo() );
1875 }
1876
1877 wxSize wxTextCtrl::DoGetBestSize() const
1878 {
1879     // FIXME should be different for multi-line controls...
1880     wxSize ret( wxControl::DoGetBestSize() );
1881     wxSize best(80, ret.y);
1882     CacheBestSize(best);
1883     return best;
1884 }
1885
1886 // ----------------------------------------------------------------------------
1887 // freeze/thaw
1888 // ----------------------------------------------------------------------------
1889
1890 void wxTextCtrl::Freeze()
1891 {
1892     wxCHECK_RET(m_text != NULL, wxT("invalid text ctrl"));
1893
1894     if ( HasFlag(wxTE_MULTILINE) )
1895     {
1896         if (m_freezeCount++ == 0)
1897         {
1898             // freeze textview updates and remove buffer
1899             g_signal_connect (m_text, "expose_event",
1900                               G_CALLBACK (gtk_text_exposed_callback), this);
1901             g_signal_connect (m_widget, "expose_event",
1902                               G_CALLBACK (gtk_text_exposed_callback), this);
1903             gtk_widget_set_sensitive(m_widget, false);
1904             g_object_ref(m_buffer);
1905             GtkTextBuffer* buf_new = gtk_text_buffer_new(NULL);
1906             GtkTextMark* mark = GTK_TEXT_VIEW(m_text)->first_para_mark;
1907             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), buf_new);
1908             // gtk_text_view_set_buffer adds its own reference
1909             g_object_unref(buf_new);
1910             // This mark should be deleted when the buffer is changed,
1911             // but it's not (in GTK+ up to at least 2.10.6).
1912             // Otherwise these anonymous marks start to build up in the buffer,
1913             // and Freeze takes longer and longer each time it is called.
1914             if (GTK_IS_TEXT_MARK(mark) && !gtk_text_mark_get_deleted(mark))
1915                 gtk_text_buffer_delete_mark(m_buffer, mark);
1916         }
1917     }
1918 }
1919
1920 void wxTextCtrl::Thaw()
1921 {
1922     if ( HasFlag(wxTE_MULTILINE) )
1923     {
1924         wxCHECK_RET(m_freezeCount != 0, _T("Thaw() without matching Freeze()"));
1925
1926         if (--m_freezeCount == 0)
1927         {
1928             // Reattach buffer and thaw textview updates
1929             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1930             g_object_unref(m_buffer);
1931             gtk_widget_set_sensitive(m_widget, true);
1932             g_signal_handlers_disconnect_by_func (m_widget,
1933                     (gpointer) gtk_text_exposed_callback, this);
1934             g_signal_handlers_disconnect_by_func (m_text,
1935                     (gpointer) gtk_text_exposed_callback, this);
1936             if (m_showPositionOnThaw != NULL)
1937             {
1938                 gtk_text_view_scroll_mark_onscreen(
1939                     GTK_TEXT_VIEW(m_text), m_showPositionOnThaw);
1940                 m_showPositionOnThaw = NULL;
1941             }
1942         }
1943     }
1944 }
1945
1946 // ----------------------------------------------------------------------------
1947 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1948 // ----------------------------------------------------------------------------
1949
1950 // FIXME: when dragging on a link the sample gets an "Unknown event".
1951 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1952 // a buggy sample, or something else
1953 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1954 {
1955     event.Skip();
1956     if( !HasFlag(wxTE_AUTO_URL) )
1957         return;
1958
1959     gint x, y;
1960     GtkTextIter start, end;
1961     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1962                                                 "wxUrl");
1963
1964     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1965                                           event.GetX(), event.GetY(), &x, &y);
1966
1967     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1968     if (!gtk_text_iter_has_tag(&end, tag))
1969     {
1970         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1971                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1972         return;
1973     }
1974
1975     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1976                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1977
1978     start = end;
1979     if(!gtk_text_iter_begins_tag(&start, tag))
1980         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1981     if(!gtk_text_iter_ends_tag(&end, tag))
1982         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1983
1984     // Native context menu is probably not desired on an URL.
1985     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1986     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1987         event.Skip(false);
1988
1989     wxTextUrlEvent url_event(m_windowId, event,
1990                              gtk_text_iter_get_offset(&start),
1991                              gtk_text_iter_get_offset(&end));
1992
1993     InitCommandEvent(url_event);
1994     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1995     //event.Skip(!GetEventHandler()->ProcessEvent(url_event));
1996     GetEventHandler()->ProcessEvent(url_event);
1997 }
1998
1999 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
2000 {
2001     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
2002
2003     // GtkTextView starts a drag operation when left mouse button is pressed
2004     // and ends it when it is released and if it doesn't get the release event
2005     // the next click on a control results in an assertion failure inside
2006     // gtk_text_view_start_selection_drag() which simply *kills* the program
2007     // without anything we can do about it, so always let GTK+ have this event
2008     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
2009 }
2010
2011 // static
2012 wxVisualAttributes
2013 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
2014 {
2015     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
2016 }