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 #if wxUSE_TEXTCTRL
  14
  15 #include "wx/textctrl.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/intl.h"
  19     #include "wx/log.h"
  20     #include "wx/utils.h"
  21     #include "wx/settings.h"
  22     #include "wx/math.h"
  23 #endif
  24
  25 #include "wx/strconv.h"
  26 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  27
  28 #include <sys/types.h>
  29 #include <sys/stat.h>
  30 #include <ctype.h>
  31
  32 #include "wx/gtk/private.h"
  33
  34 // ----------------------------------------------------------------------------
  35 // helpers
  36 // ----------------------------------------------------------------------------
  37
  38 extern "C" {
  39 static void wxGtkOnRemoveTag(GtkTextBuffer *buffer,
  40                              GtkTextTag *tag,
  41                              GtkTextIter * WXUNUSED(start),
  42                              GtkTextIter * WXUNUSED(end),
  43                              char *prefix)
  44 {
  45     gchar *name;
  46     g_object_get (tag, "name", &name, NULL);
  47
  48     if (!name || strncmp(name, prefix, strlen(prefix)))
  49         // anonymous tag or not starting with prefix - don't remove
  50         g_signal_stop_emission_by_name (buffer, "remove_tag");
  51
  52     g_free(name);
  53 }
  54 }
  55
  56 // remove all tags starting with the given prefix from the start..end range
  57 static void
  58 wxGtkTextRemoveTagsWithPrefix(GtkTextBuffer *text_buffer,
  59                               const char *prefix,
  60                               GtkTextIter *start,
  61                               GtkTextIter *end)
  62 {
  63     gulong remove_handler_id = g_signal_connect
  64                                (
  65                                 text_buffer,
  66                                 "remove_tag",
  67                                 G_CALLBACK(wxGtkOnRemoveTag),
  68                                 gpointer(prefix)
  69                                );
  70     gtk_text_buffer_remove_all_tags(text_buffer, start, end);
  71     g_signal_handler_disconnect(text_buffer, remove_handler_id);
  72 }
  73
  74 static void wxGtkTextApplyTagsFromAttr(GtkWidget *text,
  75                                        GtkTextBuffer *text_buffer,
  76                                        const wxTextAttr& attr,
  77                                        GtkTextIter *start,
  78                                        GtkTextIter *end)
  79 {
  80     static gchar buf[1024];
  81     GtkTextTag *tag;
  82
  83     if (attr.HasFont())
  84     {
  85         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXFONT", start, end);
  86
  87         wxFont font(attr.GetFont());
  88
  89         PangoFontDescription *font_description = font.GetNativeFontInfo()->description;
  90         wxGtkString font_string(pango_font_description_to_string(font_description));
  91         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string.c_str());
  92         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  93                                          buf );
  94         if (!tag)
  95             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  96                                               "font-desc", font_description,
  97                                               NULL );
  98         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  99
 100         if (font.GetUnderlined())
 101         {
 102             g_snprintf(buf, sizeof(buf), "WXFONTUNDERLINE");
 103             tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 104                                              buf );
 105             if (!tag)
 106                 tag = gtk_text_buffer_create_tag( text_buffer, buf,
 107                                                   "underline-set", TRUE,
 108                                                   "underline", PANGO_UNDERLINE_SINGLE,
 109                                                   NULL );
 110             gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 111         }
 112     }
 113
 114     if (attr.HasTextColour())
 115     {
 116         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXFORECOLOR", start, end);
 117
 118         const GdkColor *colFg = attr.GetTextColour().GetColor();
 119         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
 120                    colFg->red, colFg->green, colFg->blue);
 121         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 122                                          buf );
 123         if (!tag)
 124             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 125                                               "foreground-gdk", colFg, NULL );
 126         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 127     }
 128
 129     if (attr.HasBackgroundColour())
 130     {
 131         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXBACKCOLOR", start, end);
 132
 133         const GdkColor *colBg = attr.GetBackgroundColour().GetColor();
 134         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
 135                    colBg->red, colBg->green, colBg->blue);
 136         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 137                                          buf );
 138         if (!tag)
 139             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 140                                               "background-gdk", colBg, NULL );
 141         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 142     }
 143
 144     if (attr.HasAlignment())
 145     {
 146         GtkTextIter para_start, para_end = *end;
 147         gtk_text_buffer_get_iter_at_line( text_buffer,
 148                                           &para_start,
 149                                           gtk_text_iter_get_line(start) );
 150         gtk_text_iter_forward_line(&para_end);
 151
 152         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXALIGNMENT", start, end);
 153
 154         GtkJustification align;
 155         switch (attr.GetAlignment())
 156         {
 157             default:
 158                 align = GTK_JUSTIFY_LEFT;
 159                 break;
 160             case wxTEXT_ALIGNMENT_RIGHT:
 161                 align = GTK_JUSTIFY_RIGHT;
 162                 break;
 163             case wxTEXT_ALIGNMENT_CENTER:
 164                 align = GTK_JUSTIFY_CENTER;
 165                 break;
 166 // gtk+ doesn't support justify before gtk+-2.11.0 with pango-1.17 being available
 167 // (but if new enough pango isn't available it's a mere gtk warning)
 168 #if GTK_CHECK_VERSION(2,11,0)
 169             case wxTEXT_ALIGNMENT_JUSTIFIED:
 170                 if (!gtk_check_version(2,11,0))
 171                     align = GTK_JUSTIFY_FILL;
 172                 else
 173                     align = GTK_JUSTIFY_LEFT;
 174                 break;
 175 #endif
 176         }
 177
 178         g_snprintf(buf, sizeof(buf), "WXALIGNMENT %d", align);
 179         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 180                                          buf );
 181         if (!tag)
 182             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 183                                               "justification", align, NULL );
 184         gtk_text_buffer_apply_tag( text_buffer, tag, &para_start, &para_end );
 185     }
 186
 187     if (attr.HasLeftIndent())
 188     {
 189         // Indentation attribute
 190
 191         // Clear old indentation tags
 192         GtkTextIter para_start, para_end = *end;
 193         gtk_text_buffer_get_iter_at_line( text_buffer,
 194                                           &para_start,
 195                                           gtk_text_iter_get_line(start) );
 196         gtk_text_iter_forward_line(&para_end);
 197
 198         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXINDENT", start, end);
 199
 200         // Convert indent from 1/10th of a mm into pixels
 201         float factor =
 202             (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 203                       gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 204
 205         const int indent = (int)(factor * attr.GetLeftIndent());
 206         const int subIndent = (int)(factor * attr.GetLeftSubIndent());
 207
 208         gint gindent;
 209         gint gsubindent;
 210
 211         if (subIndent >= 0)
 212         {
 213             gindent = indent;
 214             gsubindent = -subIndent;
 215         }
 216         else
 217         {
 218             gindent = -subIndent;
 219             gsubindent = indent;
 220         }
 221
 222         g_snprintf(buf, sizeof(buf), "WXINDENT %d %d", gindent, gsubindent);
 223         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 224                                         buf );
 225         if (!tag)
 226             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 227                                               "left-margin", gindent, "indent", gsubindent, NULL );
 228         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 229     }
 230
 231     if (attr.HasTabs())
 232     {
 233         // Set tab stops
 234
 235         // Clear old tabs
 236         GtkTextIter para_start, para_end = *end;
 237         gtk_text_buffer_get_iter_at_line( text_buffer,
 238                                           &para_start,
 239                                           gtk_text_iter_get_line(start) );
 240         gtk_text_iter_forward_line(&para_end);
 241
 242         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXTABS", start, end);
 243
 244         const wxArrayInt& tabs = attr.GetTabs();
 245
 246         wxString tagname = _T("WXTABS");
 247         g_snprintf(buf, sizeof(buf), "WXTABS");
 248         for (size_t i = 0; i < tabs.GetCount(); i++)
 249             tagname += wxString::Format(_T(" %d"), tabs[i]);
 250
 251         const wxWX2MBbuf buftag = tagname.utf8_str();
 252
 253         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 254                                         buftag );
 255         if (!tag)
 256         {
 257             // Factor to convert from 1/10th of a mm into pixels
 258             float factor =
 259                 (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 260                           gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 261
 262             PangoTabArray* tabArray = pango_tab_array_new(tabs.GetCount(), TRUE);
 263             for (size_t i = 0; i < tabs.GetCount(); i++)
 264                 pango_tab_array_set_tab(tabArray, i, PANGO_TAB_LEFT, (gint)(tabs[i] * factor));
 265             tag = gtk_text_buffer_create_tag( text_buffer, buftag,
 266                                               "tabs", tabArray, NULL );
 267             pango_tab_array_free(tabArray);
 268         }
 269         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 270     }
 271 }
 272
 273 static void wxGtkTextInsert(GtkWidget *text,
 274                             GtkTextBuffer *text_buffer,
 275                             const wxTextAttr& attr,
 276                             const wxCharBuffer& buffer)
 277
 278 {
 279     gint start_offset;
 280     GtkTextIter iter, start;
 281
 282     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 283                                      gtk_text_buffer_get_insert (text_buffer) );
 284     start_offset = gtk_text_iter_get_offset (&iter);
 285     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 286
 287     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 288
 289     wxGtkTextApplyTagsFromAttr(text, text_buffer, attr, &start, &iter);
 290 }
 291
 292 // Implementation of wxTE_AUTO_URL for wxGTK2 by Mart Raudsepp,
 293
 294 extern "C" {
 295 static void
 296 au_apply_tag_callback(GtkTextBuffer *buffer,
 297                       GtkTextTag *tag,
 298                       GtkTextIter * WXUNUSED(start),
 299                       GtkTextIter * WXUNUSED(end),
 300                       gpointer WXUNUSED(textctrl))
 301 {
 302     if(tag == gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl"))
 303         g_signal_stop_emission_by_name (buffer, "apply_tag");
 304 }
 305 }
 306
 307 //-----------------------------------------------------------------------------
 308 //  GtkTextCharPredicates for gtk_text_iter_*_find_char
 309 //-----------------------------------------------------------------------------
 310
 311 extern "C" {
 312 static gboolean
 313 pred_whitespace(gunichar ch, gpointer WXUNUSED(user_data))
 314 {
 315     return g_unichar_isspace(ch);
 316 }
 317 }
 318
 319 extern "C" {
 320 static gboolean
 321 pred_non_whitespace (gunichar ch, gpointer WXUNUSED(user_data))
 322 {
 323     return !g_unichar_isspace(ch);
 324 }
 325 }
 326
 327 extern "C" {
 328 static gboolean
 329 pred_nonpunct (gunichar ch, gpointer WXUNUSED(user_data))
 330 {
 331     return !g_unichar_ispunct(ch);
 332 }
 333 }
 334
 335 extern "C" {
 336 static gboolean
 337 pred_nonpunct_or_slash (gunichar ch, gpointer WXUNUSED(user_data))
 338 {
 339     return !g_unichar_ispunct(ch) || ch == '/';
 340 }
 341 }
 342
 343 //-----------------------------------------------------------------------------
 344 //  Check for links between s and e and correct tags as necessary
 345 //-----------------------------------------------------------------------------
 346
 347 // This function should be made match better while being efficient at one point.
 348 // Most probably with a row of regular expressions.
 349 extern "C" {
 350 static void
 351 au_check_word( GtkTextIter *s, GtkTextIter *e )
 352 {
 353     static const char *URIPrefixes[] =
 354     {
 355         "http://",
 356         "ftp://",
 357         "www.",
 358         "ftp.",
 359         "mailto://",
 360         "https://",
 361         "file://",
 362         "nntp://",
 363         "news://",
 364         "telnet://",
 365         "mms://",
 366         "gopher://",
 367         "prospero://",
 368         "wais://",
 369     };
 370
 371     GtkTextIter start = *s, end = *e;
 372     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 373
 374     // Get our special link tag
 375     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 376
 377     // Get rid of punctuation from beginning and end.
 378     // Might want to move this to au_check_range if an improved link checking doesn't
 379     // use some intelligent punctuation checking itself (beware of undesired iter modifications).
 380     if(g_unichar_ispunct( gtk_text_iter_get_char( &start ) ) )
 381         gtk_text_iter_forward_find_char( &start, pred_nonpunct, NULL, e );
 382
 383     gtk_text_iter_backward_find_char( &end, pred_nonpunct_or_slash, NULL, &start );
 384     gtk_text_iter_forward_char(&end);
 385
 386     wxGtkString text(gtk_text_iter_get_text( &start, &end ));
 387     size_t len = strlen(text), prefix_len;
 388     size_t n;
 389
 390     for( n = 0; n < WXSIZEOF(URIPrefixes); ++n )
 391     {
 392         prefix_len = strlen(URIPrefixes[n]);
 393         if((len > prefix_len) && !strncasecmp(text, URIPrefixes[n], prefix_len))
 394             break;
 395     }
 396
 397     if(n < WXSIZEOF(URIPrefixes))
 398     {
 399         gulong signal_id = g_signal_handler_find (buffer,
 400                                                   (GSignalMatchType) (G_SIGNAL_MATCH_FUNC),
 401                                                   0, 0, NULL,
 402                                                   (gpointer)au_apply_tag_callback, NULL);
 403
 404         g_signal_handler_block (buffer, signal_id);
 405         gtk_text_buffer_apply_tag(buffer, tag, &start, &end);
 406         g_signal_handler_unblock (buffer, signal_id);
 407     }
 408 }
 409 }
 410
 411 extern "C" {
 412 static void
 413 au_check_range(GtkTextIter *s,
 414                GtkTextIter *range_end)
 415 {
 416     GtkTextIter range_start = *s;
 417     GtkTextIter word_end;
 418     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 419     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 420
 421     gtk_text_buffer_remove_tag(buffer, tag, s, range_end);
 422
 423     if(g_unichar_isspace(gtk_text_iter_get_char(&range_start)))
 424         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 425
 426     while(!gtk_text_iter_equal(&range_start, range_end))
 427     {
 428         word_end = range_start;
 429         gtk_text_iter_forward_find_char(&word_end, pred_whitespace, NULL, range_end);
 430
 431         // Now we should have a word delimited by range_start and word_end, correct link tags
 432         au_check_word(&range_start, &word_end);
 433
 434         range_start = word_end;
 435         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 436     }
 437 }
 438 }
 439
 440 //-----------------------------------------------------------------------------
 441 //  "insert-text" for GtkTextBuffer
 442 //-----------------------------------------------------------------------------
 443
 444 extern "C" {
 445 static void
 446 au_insert_text_callback(GtkTextBuffer * WXUNUSED(buffer),
 447                         GtkTextIter *end,
 448                         gchar *text,
 449                         gint len,
 450                         wxTextCtrl *win)
 451 {
 452     if (!len || !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 453         return;
 454
 455     GtkTextIter start = *end;
 456     gtk_text_iter_backward_chars(&start, g_utf8_strlen(text, len));
 457
 458     GtkTextIter line_start = start;
 459     GtkTextIter line_end = *end;
 460     GtkTextIter words_start = start;
 461     GtkTextIter words_end = *end;
 462
 463     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(&start));
 464     gtk_text_iter_forward_to_line_end(&line_end);
 465     gtk_text_iter_backward_find_char(&words_start, pred_whitespace, NULL, &line_start);
 466     gtk_text_iter_forward_find_char(&words_end, pred_whitespace, NULL, &line_end);
 467
 468     au_check_range(&words_start, &words_end);
 469 }
 470 }
 471
 472 //-----------------------------------------------------------------------------
 473 //  "delete-range" for GtkTextBuffer
 474 //-----------------------------------------------------------------------------
 475
 476 extern "C" {
 477 static void
 478 au_delete_range_callback(GtkTextBuffer * WXUNUSED(buffer),
 479                          GtkTextIter *start,
 480                          GtkTextIter *end,
 481                          wxTextCtrl *win)
 482 {
 483     if( !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 484         return;
 485
 486     GtkTextIter line_start = *start, line_end = *end;
 487
 488     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(start));
 489     gtk_text_iter_forward_to_line_end(&line_end);
 490     gtk_text_iter_backward_find_char(start, pred_whitespace, NULL, &line_start);
 491     gtk_text_iter_forward_find_char(end, pred_whitespace, NULL, &line_end);
 492
 493     au_check_range(start, end);
 494 }
 495 }
 496
 497
 498 //-----------------------------------------------------------------------------
 499 //  "changed"
 500 //-----------------------------------------------------------------------------
 501
 502 extern "C" {
 503 static void
 504 gtk_text_changed_callback( GtkWidget * WXUNUSED(widget), wxTextCtrl *win )
 505 {
 506     if ( win->IgnoreTextUpdate() )
 507         return;
 508
 509     if (!win->m_hasVMT) return;
 510
 511     if ( win->MarkDirtyOnChange() )
 512         win->MarkDirty();
 513
 514     win->SendTextUpdatedEvent();
 515 }
 516 }
 517
 518 //-----------------------------------------------------------------------------
 519 //  clipboard events: "copy-clipboard", "cut-clipboard", "paste-clipboard"
 520 //-----------------------------------------------------------------------------
 521
 522 // common part of the event handlers below
 523 static void
 524 handle_text_clipboard_callback( GtkWidget *widget, wxTextCtrl *win,
 525                                 wxEventType eventType, const gchar * signal_name)
 526 {
 527     wxClipboardTextEvent event( eventType, win->GetId() );
 528     event.SetEventObject( win );
 529     if ( win->HandleWindowEvent( event ) )
 530     {
 531         // don't let the default processing to take place if we did something
 532         // ourselves in the event handler
 533         g_signal_stop_emission_by_name (widget, signal_name);
 534     }
 535 }
 536
 537 extern "C" {
 538 static void
 539 gtk_copy_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 540 {
 541     handle_text_clipboard_callback(
 542         widget, win, wxEVT_COMMAND_TEXT_COPY, "copy-clipboard" );
 543 }
 544
 545 static void
 546 gtk_cut_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 547 {
 548     handle_text_clipboard_callback(
 549         widget, win, wxEVT_COMMAND_TEXT_CUT, "cut-clipboard" );
 550 }
 551
 552 static void
 553 gtk_paste_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 554 {
 555     handle_text_clipboard_callback(
 556         widget, win, wxEVT_COMMAND_TEXT_PASTE, "paste-clipboard" );
 557 }
 558 }
 559
 560 //-----------------------------------------------------------------------------
 561 // "expose_event" from scrolled window and textview
 562 //-----------------------------------------------------------------------------
 563
 564 extern "C" {
 565 static gboolean
 566 gtk_text_exposed_callback( GtkWidget * WXUNUSED(widget),
 567                            GdkEventExpose * WXUNUSED(event),
 568                            wxTextCtrl * WXUNUSED(win) )
 569 {
 570     return TRUE;
 571 }
 572 }
 573
 574
 575 //-----------------------------------------------------------------------------
 576 //  wxTextCtrl
 577 //-----------------------------------------------------------------------------
 578
 579 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 580
 581 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 582     EVT_CHAR(wxTextCtrl::OnChar)
 583
 584     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 585     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 586     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 587     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 588     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 589
 590     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 591     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 592     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 593     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 594     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 595
 596     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 597     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 598     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 599     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 600     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 601     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 602     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 603     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 604     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 605 END_EVENT_TABLE()
 606
 607 void wxTextCtrl::Init()
 608 {
 609     m_dontMarkDirty =
 610     m_modified = false;
 611
 612     m_countUpdatesToIgnore = 0;
 613
 614     SetUpdateFont(false);
 615
 616     m_text = NULL;
 617     m_showPositionOnThaw = NULL;
 618     m_gdkHandCursor = NULL;
 619     m_gdkXTermCursor = NULL;
 620 }
 621
 622 wxTextCtrl::~wxTextCtrl()
 623 {
 624     if(m_gdkHandCursor)
 625         gdk_cursor_unref(m_gdkHandCursor);
 626     if(m_gdkXTermCursor)
 627         gdk_cursor_unref(m_gdkXTermCursor);
 628 }
 629
 630 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 631                         wxWindowID id,
 632                         const wxString &value,
 633                         const wxPoint &pos,
 634                         const wxSize &size,
 635                         long style,
 636                         const wxValidator& validator,
 637                         const wxString &name )
 638 {
 639     Init();
 640
 641     Create( parent, id, value, pos, size, style, validator, name );
 642 }
 643
 644 bool wxTextCtrl::Create( wxWindow *parent,
 645                          wxWindowID id,
 646                          const wxString &value,
 647                          const wxPoint &pos,
 648                          const wxSize &size,
 649                          long style,
 650                          const wxValidator& validator,
 651                          const wxString &name )
 652 {
 653     if (!PreCreation( parent, pos, size ) ||
 654         !CreateBase( parent, id, pos, size, style, validator, name ))
 655     {
 656         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 657         return false;
 658     }
 659
 660     bool multi_line = (style & wxTE_MULTILINE) != 0;
 661
 662     if (multi_line)
 663     {
 664         // Create view
 665         m_text = gtk_text_view_new();
 666
 667         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 668
 669         // create "ShowPosition" marker
 670         GtkTextIter iter;
 671         gtk_text_buffer_get_start_iter(m_buffer, &iter);
 672         gtk_text_buffer_create_mark(m_buffer, "ShowPosition", &iter, true);
 673
 674         // create scrolled window
 675         m_widget = gtk_scrolled_window_new( NULL, NULL );
 676         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 677                                         GTK_POLICY_AUTOMATIC,
 678                                         style & wxTE_NO_VSCROLL
 679                                             ? GTK_POLICY_NEVER
 680                                             : GTK_POLICY_AUTOMATIC );
 681         // for ScrollLines/Pages
 682         m_scrollBar[1] = (GtkRange*)((GtkScrolledWindow*)m_widget)->vscrollbar;
 683
 684         // Insert view into scrolled window
 685         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 686
 687         GTKSetWrapMode();
 688
 689         GtkScrolledWindowSetBorder(m_widget, style);
 690
 691         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 692
 693         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 694     }
 695     else
 696     {
 697         // a single-line text control: no need for scrollbars
 698         m_widget =
 699         m_text = gtk_entry_new();
 700
 701         if (style & wxNO_BORDER)
 702             g_object_set (m_text, "has-frame", FALSE, NULL);
 703
 704     }
 705
 706     m_parent->DoAddChild( this );
 707
 708     m_focusWidget = m_text;
 709
 710     PostCreation(size);
 711
 712     if (multi_line)
 713     {
 714         gtk_widget_show(m_text);
 715     }
 716
 717     // We want to be notified about text changes.
 718     if (multi_line)
 719     {
 720         g_signal_connect (m_buffer, "changed",
 721                           G_CALLBACK (gtk_text_changed_callback), this);
 722     }
 723     else
 724     {
 725         g_signal_connect (m_text, "changed",
 726                           G_CALLBACK (gtk_text_changed_callback), this);
 727     }
 728
 729     if (!value.empty())
 730     {
 731         SetValue( value );
 732     }
 733
 734     if (style & wxTE_PASSWORD)
 735         GTKSetVisibility();
 736
 737     if (style & wxTE_READONLY)
 738         GTKSetEditable();
 739
 740     // left justification (alignment) is the default anyhow
 741     if ( style & (wxTE_RIGHT | wxTE_CENTRE) )
 742         GTKSetJustification();
 743
 744     if (multi_line)
 745     {
 746         // Handle URLs on multi-line controls with wxTE_AUTO_URL style
 747         if (style & wxTE_AUTO_URL)
 748         {
 749             GtkTextIter start, end;
 750             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 751             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 752
 753             // We create our wxUrl tag here for slight efficiency gain - we
 754             // don't have to check for the tag existance in callbacks,
 755             // hereby it's guaranteed to exist.
 756             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 757                                        "foreground", "blue",
 758                                        "underline", PANGO_UNDERLINE_SINGLE,
 759                                        NULL);
 760
 761             // Check for URLs after each text change
 762             g_signal_connect_after (m_buffer, "insert_text",
 763                                     G_CALLBACK (au_insert_text_callback), this);
 764             g_signal_connect_after (m_buffer, "delete_range",
 765                                     G_CALLBACK (au_delete_range_callback), this);
 766
 767             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 768             // block this callback temporarily. This takes care of gtk+ internal
 769             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 770             // which is undesired because only a part of the URL might be copied.
 771             // The insert-text signal emitted inside it will take care of newly formed
 772             // or wholly copied URLs.
 773             g_signal_connect (m_buffer, "apply_tag",
 774                               G_CALLBACK (au_apply_tag_callback), NULL);
 775
 776             // Check for URLs in the initial string passed to Create
 777             gtk_text_buffer_get_start_iter(m_buffer, &start);
 778             gtk_text_buffer_get_end_iter(m_buffer, &end);
 779             au_check_range(&start, &end);
 780         }
 781     }
 782     else // single line
 783     {
 784         // do the right thing with Enter presses depending on whether we have
 785         // wxTE_PROCESS_ENTER or not
 786         GTKSetActivatesDefault();
 787     }
 788
 789
 790     g_signal_connect (m_text, "copy-clipboard",
 791                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 792     g_signal_connect (m_text, "cut-clipboard",
 793                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 794     g_signal_connect (m_text, "paste-clipboard",
 795                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 796
 797     m_cursor = wxCursor( wxCURSOR_IBEAM );
 798
 799     return true;
 800 }
 801
 802 GtkEditable *wxTextCtrl::GetEditable() const
 803 {
 804     wxCHECK_MSG( IsSingleLine(), NULL, "shouldn't be called for multiline" );
 805
 806     return GTK_EDITABLE(m_text);
 807 }
 808
 809 // ----------------------------------------------------------------------------
 810 // flags handling
 811 // ----------------------------------------------------------------------------
 812
 813 void wxTextCtrl::GTKSetEditable()
 814 {
 815     gboolean editable = !HasFlag(wxTE_READONLY);
 816     if ( IsSingleLine() )
 817         gtk_editable_set_editable(GTK_EDITABLE(m_text), editable);
 818     else
 819         gtk_text_view_set_editable(GTK_TEXT_VIEW(m_text), editable);
 820 }
 821
 822 void wxTextCtrl::GTKSetVisibility()
 823 {
 824     wxCHECK_RET( IsSingleLine(),
 825                  "wxTE_PASSWORD is for single line text controls only" );
 826
 827     gtk_entry_set_visibility(GTK_ENTRY(m_text), !HasFlag(wxTE_PASSWORD));
 828 }
 829
 830 void wxTextCtrl::GTKSetActivatesDefault()
 831 {
 832     wxCHECK_RET( IsSingleLine(),
 833                  "wxTE_PROCESS_ENTER is for single line text controls only" );
 834
 835     gtk_entry_set_activates_default(GTK_ENTRY(m_text),
 836                                     !HasFlag(wxTE_PROCESS_ENTER));
 837 }
 838
 839 void wxTextCtrl::GTKSetWrapMode()
 840 {
 841     // no wrapping in single line controls
 842     if ( !IsMultiLine() )
 843         return;
 844
 845     // translate wx wrapping style to GTK+
 846     GtkWrapMode wrap;
 847     if ( HasFlag( wxTE_DONTWRAP ) )
 848         wrap = GTK_WRAP_NONE;
 849     else if ( HasFlag( wxTE_CHARWRAP ) )
 850         wrap = GTK_WRAP_CHAR;
 851     else if ( HasFlag( wxTE_WORDWRAP ) )
 852         wrap = GTK_WRAP_WORD;
 853     else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 854         wrap = GTK_WRAP_WORD_CHAR;
 855
 856     gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 857 }
 858
 859 void wxTextCtrl::GTKSetJustification()
 860 {
 861     if ( IsMultiLine() )
 862     {
 863         GtkJustification just;
 864         if ( HasFlag(wxTE_RIGHT) )
 865             just = GTK_JUSTIFY_RIGHT;
 866         else if ( HasFlag(wxTE_CENTRE) )
 867             just = GTK_JUSTIFY_CENTER;
 868         else // wxTE_LEFT == 0
 869             just = GTK_JUSTIFY_LEFT;
 870
 871         gtk_text_view_set_justification(GTK_TEXT_VIEW(m_text), just);
 872     }
 873     else // single line
 874     {
 875         gfloat align;
 876         if ( HasFlag(wxTE_RIGHT) )
 877             align = 1.0;
 878         else if ( HasFlag(wxTE_CENTRE) )
 879             align = 0.5;
 880         else // single line
 881             align = 0.0;
 882
 883         gtk_entry_set_alignment(GTK_ENTRY(m_text), align);
 884     }
 885 }
 886
 887 void wxTextCtrl::SetWindowStyleFlag(long style)
 888 {
 889     long styleOld = GetWindowStyleFlag();
 890
 891     wxTextCtrlBase::SetWindowStyleFlag(style);
 892
 893     if ( (style & wxTE_READONLY) != (styleOld & wxTE_READONLY) )
 894         GTKSetEditable();
 895
 896     if ( (style & wxTE_PASSWORD) != (styleOld & wxTE_PASSWORD) )
 897         GTKSetVisibility();
 898
 899     if ( (style & wxTE_PROCESS_ENTER) != (styleOld & wxTE_PROCESS_ENTER) )
 900         GTKSetActivatesDefault();
 901
 902     static const long flagsWrap = wxTE_WORDWRAP | wxTE_CHARWRAP | wxTE_DONTWRAP;
 903     if ( (style & flagsWrap) != (styleOld & flagsWrap) )
 904         GTKSetWrapMode();
 905
 906     static const long flagsAlign = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 907     if ( (style & flagsAlign) != (styleOld & flagsAlign) )
 908         GTKSetJustification();
 909 }
 910
 911 // ----------------------------------------------------------------------------
 912 // control value
 913 // ----------------------------------------------------------------------------
 914
 915 wxString wxTextCtrl::GetValue() const
 916 {
 917     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 918
 919     if ( IsMultiLine() )
 920     {
 921         GtkTextIter start;
 922         gtk_text_buffer_get_start_iter( m_buffer, &start );
 923         GtkTextIter end;
 924         gtk_text_buffer_get_end_iter( m_buffer, &end );
 925         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 926
 927         return wxGTK_CONV_BACK(text);
 928     }
 929     else // single line
 930     {
 931         return wxTextEntry::GetValue();
 932     }
 933 }
 934
 935 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 936 {
 937     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 938     // encoding?
 939
 940     // first check the default text style (we intentionally don't check the
 941     // style for the current position as it doesn't make sense for SetValue())
 942     const wxTextAttr& style = GetDefaultStyle();
 943     wxFontEncoding enc = style.HasFontEncoding() ? style.GetFontEncoding()
 944                                          : wxFONTENCODING_SYSTEM;
 945
 946     // fall back to the controls font if no style
 947     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 948         enc = GetFont().GetEncoding();
 949
 950     return enc;
 951 }
 952
 953 bool wxTextCtrl::IsEmpty() const
 954 {
 955     if ( IsMultiLine() )
 956         return gtk_text_buffer_get_char_count(m_buffer) == 0;
 957
 958     return wxTextEntry::IsEmpty();
 959 }
 960
 961 void wxTextCtrl::DoSetValue( const wxString &value, int flags )
 962 {
 963     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 964
 965     m_modified = false;
 966
 967     if ( !IsMultiLine() )
 968     {
 969         wxTextEntry::DoSetValue(value, flags);
 970         return;
 971     }
 972
 973     wxFontEncoding enc = m_defaultStyle.HasFont()
 974                             ? m_defaultStyle.GetFont().GetEncoding()
 975                             : wxFONTENCODING_SYSTEM;
 976     if ( enc == wxFONTENCODING_SYSTEM )
 977         enc = GetTextEncoding();
 978
 979     const wxCharBuffer buffer(wxGTK_CONV_ENC(value, enc));
 980     if ( !buffer )
 981     {
 982         // see comment in WriteText() as to why we must warn the user about
 983         // this
 984         wxLogWarning(_("Failed to set text in the text control."));
 985         return;
 986     }
 987
 988     if ( !(flags & SetValue_SendEvent) )
 989     {
 990         EnableTextChangedEvents(false);
 991     }
 992
 993     gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 994
 995     if ( !m_defaultStyle.IsDefault() )
 996     {
 997         GtkTextIter start, end;
 998         gtk_text_buffer_get_bounds( m_buffer, &start, &end );
 999         wxGtkTextApplyTagsFromAttr(m_widget, m_buffer, m_defaultStyle,
1000                                    &start, &end);
1001     }
1002
1003     if ( !(flags & SetValue_SendEvent) )
1004     {
1005         EnableTextChangedEvents(true);
1006     }
1007
1008     // This was added after discussion on the list
1009     SetInsertionPoint(0);
1010 }
1011
1012 void wxTextCtrl::WriteText( const wxString &text )
1013 {
1014     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1015
1016     // we're changing the text programmatically
1017     DontMarkDirtyOnNextChange();
1018
1019     if ( !IsMultiLine() )
1020     {
1021         wxTextEntry::WriteText(text);
1022         return;
1023     }
1024
1025     // check if we have a specific style for the current position
1026     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
1027     wxTextAttr style;
1028     if ( GetStyle(GetInsertionPoint(), style) && style.HasFontEncoding() )
1029     {
1030         enc = style.GetFontEncoding();
1031     }
1032
1033     if ( enc == wxFONTENCODING_SYSTEM )
1034         enc = GetTextEncoding();
1035
1036     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
1037     if ( !buffer )
1038     {
1039         // we must log an error here as losing the text like this can be a
1040         // serious problem (e.g. imagine the document edited by user being
1041         // empty instead of containing the correct text)
1042         wxLogWarning(_("Failed to insert text in the control."));
1043         return;
1044     }
1045
1046     // First remove the selection if there is one
1047     // TODO:  Is there an easier GTK specific way to do this?
1048     long from, to;
1049     GetSelection(&from, &to);
1050     if (from != to)
1051         Remove(from, to);
1052
1053     // Insert the text
1054     wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
1055
1056     GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
1057     // Scroll to cursor, but only if scrollbar thumb is at the very bottom
1058     // won't work when frozen, text view is not using m_buffer then
1059     if (!IsFrozen() && wxIsSameDouble(adj->value, adj->upper - adj->page_size))
1060     {
1061         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
1062                 gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
1063     }
1064 }
1065
1066 wxString wxTextCtrl::GetLineText( long lineNo ) const
1067 {
1068     wxString result;
1069     if ( IsMultiLine() )
1070     {
1071         GtkTextIter line;
1072         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
1073
1074         GtkTextIter end = line;
1075         // avoid skipping to the next line end if this one is empty
1076         if ( !gtk_text_iter_ends_line(&line) )
1077             gtk_text_iter_forward_to_line_end(&end);
1078
1079         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
1080         result = wxGTK_CONV_BACK(text);
1081     }
1082     else
1083     {
1084         if (lineNo == 0)
1085             result = GetValue();
1086     }
1087     return result;
1088 }
1089
1090 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
1091 {
1092   /* If you implement this, don't forget to update the documentation!
1093    * (file docs/latex/wx/text.tex) */
1094     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
1095 }
1096
1097 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
1098 {
1099     if ( IsMultiLine() )
1100     {
1101         GtkTextIter iter;
1102
1103         if (pos > GetLastPosition())
1104             return false;
1105
1106         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
1107
1108         if ( y )
1109             *y = gtk_text_iter_get_line(&iter);
1110         if ( x )
1111             *x = gtk_text_iter_get_line_offset(&iter);
1112     }
1113     else // single line control
1114     {
1115         if ( pos <= GTK_ENTRY(m_text)->text_length )
1116         {
1117             if ( y )
1118                 *y = 0;
1119             if ( x )
1120                 *x = pos;
1121         }
1122         else
1123         {
1124             // index out of bounds
1125             return false;
1126         }
1127     }
1128
1129     return true;
1130 }
1131
1132 long wxTextCtrl::XYToPosition(long x, long y ) const
1133 {
1134     if ( IsSingleLine() )
1135         return 0;
1136
1137     GtkTextIter iter;
1138     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1139         return -1;
1140
1141     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1142     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1143         return -1;
1144
1145     return gtk_text_iter_get_offset(&iter) + x;
1146 }
1147
1148 int wxTextCtrl::GetLineLength(long lineNo) const
1149 {
1150     if ( IsMultiLine() )
1151     {
1152         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1153         if (lineNo > last_line)
1154             return -1;
1155
1156         GtkTextIter iter;
1157         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1158         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1159         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1160     }
1161     else
1162     {
1163         wxString str = GetLineText (lineNo);
1164         return (int) str.length();
1165     }
1166 }
1167
1168 int wxTextCtrl::GetNumberOfLines() const
1169 {
1170     if ( IsMultiLine() )
1171     {
1172         return gtk_text_buffer_get_line_count( m_buffer );
1173     }
1174     else // single line
1175     {
1176         return 1;
1177     }
1178 }
1179
1180 void wxTextCtrl::SetInsertionPoint( long pos )
1181 {
1182     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1183
1184     if ( IsMultiLine() )
1185     {
1186         GtkTextIter iter;
1187         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1188         gtk_text_buffer_place_cursor( m_buffer, &iter );
1189         GtkTextMark* mark = gtk_text_buffer_get_insert(m_buffer);
1190         if (IsFrozen())
1191             // defer until Thaw, text view is not using m_buffer now
1192             m_showPositionOnThaw = mark;
1193         else
1194             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1195     }
1196     else // single line
1197     {
1198         wxTextEntry::SetInsertionPoint(pos);
1199     }
1200 }
1201
1202 void wxTextCtrl::SetEditable( bool editable )
1203 {
1204     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1205
1206     if ( IsMultiLine() )
1207     {
1208         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1209     }
1210     else // single line
1211     {
1212         wxTextEntry::SetEditable(editable);
1213     }
1214 }
1215
1216 bool wxTextCtrl::Enable( bool enable )
1217 {
1218     if (!wxWindowBase::Enable(enable))
1219     {
1220         // nothing to do
1221         return false;
1222     }
1223
1224     gtk_widget_set_sensitive( m_text, enable );
1225
1226     return true;
1227 }
1228
1229 // wxGTK-specific: called recursively by Enable,
1230 // to give widgets an opportunity to correct their colours after they
1231 // have been changed by Enable
1232 void wxTextCtrl::OnEnabled(bool WXUNUSED(enable))
1233 {
1234     // If we have a custom background colour, we use this colour in both
1235     // disabled and enabled mode, or we end up with a different colour under the
1236     // text.
1237     wxColour oldColour = GetBackgroundColour();
1238     if (oldColour.Ok())
1239     {
1240         // Need to set twice or it'll optimize the useful stuff out
1241         if (oldColour == * wxWHITE)
1242             SetBackgroundColour(*wxBLACK);
1243         else
1244             SetBackgroundColour(*wxWHITE);
1245         SetBackgroundColour(oldColour);
1246     }
1247 }
1248
1249 void wxTextCtrl::MarkDirty()
1250 {
1251     m_modified = true;
1252 }
1253
1254 void wxTextCtrl::DiscardEdits()
1255 {
1256     m_modified = false;
1257 }
1258
1259 // ----------------------------------------------------------------------------
1260 // event handling
1261 // ----------------------------------------------------------------------------
1262
1263 void wxTextCtrl::EnableTextChangedEvents(bool enable)
1264 {
1265     if ( enable )
1266     {
1267         g_signal_handlers_unblock_by_func(GetTextObject(),
1268             (gpointer)gtk_text_changed_callback, this);
1269     }
1270     else // disable events
1271     {
1272         g_signal_handlers_block_by_func(GetTextObject(),
1273             (gpointer)gtk_text_changed_callback, this);
1274     }
1275 }
1276
1277 bool wxTextCtrl::IgnoreTextUpdate()
1278 {
1279     if ( m_countUpdatesToIgnore > 0 )
1280     {
1281         m_countUpdatesToIgnore--;
1282
1283         return true;
1284     }
1285
1286     return false;
1287 }
1288
1289 bool wxTextCtrl::MarkDirtyOnChange()
1290 {
1291     if ( m_dontMarkDirty )
1292     {
1293         m_dontMarkDirty = false;
1294
1295         return false;
1296     }
1297
1298     return true;
1299 }
1300
1301 void wxTextCtrl::SetSelection( long from, long to )
1302 {
1303     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1304
1305     if (from == -1 && to == -1)
1306     {
1307         from = 0;
1308         to = GetValue().length();
1309     }
1310
1311     if ( IsMultiLine() )
1312     {
1313         GtkTextIter fromi, toi;
1314         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1315         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1316
1317         gtk_text_buffer_place_cursor( m_buffer, &toi );
1318         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1319     }
1320     else // single line
1321     {
1322         wxTextEntry::SetSelection(from, to);
1323     }
1324 }
1325
1326 void wxTextCtrl::ShowPosition( long pos )
1327 {
1328     if (IsMultiLine())
1329     {
1330         GtkTextIter iter;
1331         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, int(pos));
1332         GtkTextMark* mark = gtk_text_buffer_get_mark(m_buffer, "ShowPosition");
1333         gtk_text_buffer_move_mark(m_buffer, mark, &iter);
1334         if (IsFrozen())
1335             // defer until Thaw, text view is not using m_buffer now
1336             m_showPositionOnThaw = mark;
1337         else
1338             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1339     }
1340 }
1341
1342 wxTextCtrlHitTestResult
1343 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1344 {
1345     if ( !IsMultiLine() )
1346     {
1347         // not supported
1348         return wxTE_HT_UNKNOWN;
1349     }
1350
1351     int x, y;
1352     gtk_text_view_window_to_buffer_coords
1353     (
1354         GTK_TEXT_VIEW(m_text),
1355         GTK_TEXT_WINDOW_TEXT,
1356         pt.x, pt.y,
1357         &x, &y
1358     );
1359
1360     GtkTextIter iter;
1361     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1362     if ( pos )
1363         *pos = gtk_text_iter_get_offset(&iter);
1364
1365     return wxTE_HT_ON_TEXT;
1366 }
1367
1368 long wxTextCtrl::GetInsertionPoint() const
1369 {
1370     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1371
1372     if ( IsMultiLine() )
1373     {
1374         // There is no direct accessor for the cursor, but
1375         // internally, the cursor is the "mark" called
1376         // "insert" in the text view's btree structure.
1377
1378         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1379         GtkTextIter cursor;
1380         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1381
1382         return gtk_text_iter_get_offset( &cursor );
1383     }
1384     else
1385     {
1386         return wxTextEntry::GetInsertionPoint();
1387     }
1388 }
1389
1390 wxTextPos wxTextCtrl::GetLastPosition() const
1391 {
1392     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1393
1394     int pos = 0;
1395
1396     if ( IsMultiLine() )
1397     {
1398         GtkTextIter end;
1399         gtk_text_buffer_get_end_iter( m_buffer, &end );
1400
1401         pos = gtk_text_iter_get_offset( &end );
1402     }
1403     else // single line
1404     {
1405         pos = wxTextEntry::GetLastPosition();
1406     }
1407
1408     return (long)pos;
1409 }
1410
1411 void wxTextCtrl::Remove( long from, long to )
1412 {
1413     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1414
1415     if ( IsMultiLine() )
1416     {
1417         GtkTextIter fromi, toi;
1418         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1419         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1420
1421         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1422     }
1423     else // single line
1424     {
1425         wxTextEntry::Remove(from, to);
1426     }
1427 }
1428
1429 void wxTextCtrl::Cut()
1430 {
1431     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1432
1433     if ( IsMultiLine() )
1434         g_signal_emit_by_name (m_text, "cut-clipboard");
1435     else
1436         wxTextEntry::Cut();
1437 }
1438
1439 void wxTextCtrl::Copy()
1440 {
1441     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1442
1443     if ( IsMultiLine() )
1444         g_signal_emit_by_name (m_text, "copy-clipboard");
1445     else
1446         wxTextEntry::Copy();
1447 }
1448
1449 void wxTextCtrl::Paste()
1450 {
1451     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1452
1453     if ( IsMultiLine() )
1454         g_signal_emit_by_name (m_text, "paste-clipboard");
1455     else
1456         wxTextEntry::Paste();
1457 }
1458
1459 // If the return values from and to are the same, there is no
1460 // selection.
1461 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1462 {
1463     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1464
1465     if ( !IsMultiLine() )
1466     {
1467         wxTextEntry::GetSelection(fromOut, toOut);
1468         return;
1469     }
1470
1471     gint from, to;
1472
1473     GtkTextIter ifrom, ito;
1474     if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1475     {
1476         from = gtk_text_iter_get_offset(&ifrom);
1477         to = gtk_text_iter_get_offset(&ito);
1478
1479         if ( from > to )
1480         {
1481             // exchange them to be compatible with wxMSW
1482             gint tmp = from;
1483             from = to;
1484             to = tmp;
1485         }
1486     }
1487     else // no selection
1488     {
1489         from =
1490         to = GetInsertionPoint();
1491     }
1492
1493     if ( fromOut )
1494         *fromOut = from;
1495     if ( toOut )
1496         *toOut = to;
1497 }
1498
1499
1500 bool wxTextCtrl::IsEditable() const
1501 {
1502     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1503
1504     if ( IsMultiLine() )
1505     {
1506         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1507     }
1508     else
1509     {
1510         return wxTextEntry::IsEditable();
1511     }
1512 }
1513
1514 bool wxTextCtrl::IsModified() const
1515 {
1516     return m_modified;
1517 }
1518
1519 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1520 {
1521     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1522
1523     if ( key_event.GetKeyCode() == WXK_RETURN )
1524     {
1525         if ( HasFlag(wxTE_PROCESS_ENTER) )
1526         {
1527             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1528             event.SetEventObject(this);
1529             event.SetString(GetValue());
1530             if ( HandleWindowEvent(event) )
1531                 return;
1532         }
1533     }
1534
1535     key_event.Skip();
1536 }
1537
1538 GtkWidget* wxTextCtrl::GetConnectWidget()
1539 {
1540     return GTK_WIDGET(m_text);
1541 }
1542
1543 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1544 {
1545     if ( IsMultiLine() )
1546     {
1547         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1548                                         GTK_TEXT_WINDOW_TEXT );
1549     }
1550     else
1551     {
1552         return GTK_ENTRY(m_text)->text_area;
1553     }
1554 }
1555
1556 // the font will change for subsequent text insertiongs
1557 bool wxTextCtrl::SetFont( const wxFont &font )
1558 {
1559     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1560
1561     if ( !wxTextCtrlBase::SetFont(font) )
1562     {
1563         // font didn't change, nothing to do
1564         return false;
1565     }
1566
1567     if ( IsMultiLine() )
1568     {
1569         SetUpdateFont(true);
1570
1571         m_defaultStyle.SetFont(font);
1572
1573         ChangeFontGlobally();
1574     }
1575
1576     return true;
1577 }
1578
1579 void wxTextCtrl::ChangeFontGlobally()
1580 {
1581     // this method is very inefficient and hence should be called as rarely as
1582     // possible!
1583     //
1584     // TODO: it can be implemented much more efficiently for GTK2
1585     wxASSERT_MSG( IsMultiLine(),
1586                   _T("shouldn't be called for single line controls") );
1587
1588     wxString value = GetValue();
1589     if ( !value.empty() )
1590     {
1591         SetUpdateFont(false);
1592
1593         Clear();
1594         AppendText(value);
1595     }
1596 }
1597
1598 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1599 {
1600     if ( !wxControl::SetForegroundColour(colour) )
1601         return false;
1602
1603     // update default fg colour too
1604     m_defaultStyle.SetTextColour(colour);
1605
1606     return true;
1607 }
1608
1609 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1610 {
1611     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1612
1613     if ( !wxControl::SetBackgroundColour( colour ) )
1614         return false;
1615
1616     if (!m_backgroundColour.Ok())
1617         return false;
1618
1619     // change active background color too
1620     m_defaultStyle.SetBackgroundColour( colour );
1621
1622     return true;
1623 }
1624
1625 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1626 {
1627     if ( IsMultiLine() )
1628     {
1629         if ( style.IsDefault() )
1630         {
1631             // nothing to do
1632             return true;
1633         }
1634
1635         gint l = gtk_text_buffer_get_char_count( m_buffer );
1636
1637         wxCHECK_MSG( start >= 0 && end <= l, false,
1638                      _T("invalid range in wxTextCtrl::SetStyle") );
1639
1640         GtkTextIter starti, endi;
1641         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1642         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1643
1644         wxGtkTextApplyTagsFromAttr( m_widget, m_buffer, style, &starti, &endi );
1645
1646         return true;
1647     }
1648     //else: single line text controls don't support styles
1649
1650     return false;
1651 }
1652
1653 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1654 {
1655     gtk_widget_modify_style(m_text, style);
1656 }
1657
1658 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1659 {
1660     Cut();
1661 }
1662
1663 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1664 {
1665     Copy();
1666 }
1667
1668 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1669 {
1670     Paste();
1671 }
1672
1673 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1674 {
1675     Undo();
1676 }
1677
1678 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1679 {
1680     Redo();
1681 }
1682
1683 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1684 {
1685     event.Enable( CanCut() );
1686 }
1687
1688 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1689 {
1690     event.Enable( CanCopy() );
1691 }
1692
1693 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1694 {
1695     event.Enable( CanPaste() );
1696 }
1697
1698 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1699 {
1700     event.Enable( CanUndo() );
1701 }
1702
1703 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1704 {
1705     event.Enable( CanRedo() );
1706 }
1707
1708 wxSize wxTextCtrl::DoGetBestSize() const
1709 {
1710     // FIXME should be different for multi-line controls...
1711     wxSize ret( wxControl::DoGetBestSize() );
1712     wxSize best(80, ret.y);
1713     CacheBestSize(best);
1714     return best;
1715 }
1716
1717 // ----------------------------------------------------------------------------
1718 // freeze/thaw
1719 // ----------------------------------------------------------------------------
1720
1721 void wxTextCtrl::DoFreeze()
1722 {
1723     wxCHECK_RET(m_text != NULL, wxT("invalid text ctrl"));
1724
1725     if ( HasFlag(wxTE_MULTILINE) )
1726     {
1727         // freeze textview updates and remove buffer
1728         g_signal_connect (m_text, "expose_event",
1729                           G_CALLBACK (gtk_text_exposed_callback), this);
1730         g_signal_connect (m_widget, "expose_event",
1731                           G_CALLBACK (gtk_text_exposed_callback), this);
1732         gtk_widget_set_sensitive(m_widget, false);
1733         g_object_ref(m_buffer);
1734         GtkTextBuffer* buf_new = gtk_text_buffer_new(NULL);
1735         GtkTextMark* mark = GTK_TEXT_VIEW(m_text)->first_para_mark;
1736         gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), buf_new);
1737         // gtk_text_view_set_buffer adds its own reference
1738         g_object_unref(buf_new);
1739         // This mark should be deleted when the buffer is changed,
1740         // but it's not (in GTK+ up to at least 2.10.6).
1741         // Otherwise these anonymous marks start to build up in the buffer,
1742         // and Freeze takes longer and longer each time it is called.
1743         if (GTK_IS_TEXT_MARK(mark) && !gtk_text_mark_get_deleted(mark))
1744             gtk_text_buffer_delete_mark(m_buffer, mark);
1745     }
1746 }
1747
1748 void wxTextCtrl::DoThaw()
1749 {
1750     if ( HasFlag(wxTE_MULTILINE) )
1751     {
1752         // Reattach buffer and thaw textview updates
1753         gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1754         g_object_unref(m_buffer);
1755         gtk_widget_set_sensitive(m_widget, true);
1756         g_signal_handlers_disconnect_by_func (m_widget,
1757                 (gpointer) gtk_text_exposed_callback, this);
1758         g_signal_handlers_disconnect_by_func (m_text,
1759                 (gpointer) gtk_text_exposed_callback, this);
1760         if (m_showPositionOnThaw != NULL)
1761         {
1762             gtk_text_view_scroll_mark_onscreen(
1763                 GTK_TEXT_VIEW(m_text), m_showPositionOnThaw);
1764             m_showPositionOnThaw = NULL;
1765         }
1766     }
1767 }
1768
1769 // ----------------------------------------------------------------------------
1770 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1771 // ----------------------------------------------------------------------------
1772
1773 // FIXME: when dragging on a link the sample gets an "Unknown event".
1774 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1775 // a buggy sample, or something else
1776 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1777 {
1778     event.Skip();
1779     if( !HasFlag(wxTE_AUTO_URL) )
1780         return;
1781
1782     gint x, y;
1783     GtkTextIter start, end;
1784     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1785                                                 "wxUrl");
1786
1787     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1788                                           event.GetX(), event.GetY(), &x, &y);
1789
1790     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1791     if (!gtk_text_iter_has_tag(&end, tag))
1792     {
1793         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1794                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1795         return;
1796     }
1797
1798     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1799                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1800
1801     start = end;
1802     if(!gtk_text_iter_begins_tag(&start, tag))
1803         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1804     if(!gtk_text_iter_ends_tag(&end, tag))
1805         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1806
1807     // Native context menu is probably not desired on an URL.
1808     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1809     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1810         event.Skip(false);
1811
1812     wxTextUrlEvent url_event(m_windowId, event,
1813                              gtk_text_iter_get_offset(&start),
1814                              gtk_text_iter_get_offset(&end));
1815
1816     InitCommandEvent(url_event);
1817     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1818     //event.Skip(!HandleWindowEvent(url_event));
1819     HandleWindowEvent(url_event);
1820 }
1821
1822 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
1823 {
1824     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
1825
1826     // GtkTextView starts a drag operation when left mouse button is pressed
1827     // and ends it when it is released and if it doesn't get the release event
1828     // the next click on a control results in an assertion failure inside
1829     // gtk_text_view_start_selection_drag() which simply *kills* the program
1830     // without anything we can do about it, so always let GTK+ have this event
1831     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
1832 }
1833
1834 // static
1835 wxVisualAttributes
1836 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1837 {
1838     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1839 }
1840
1841 #endif // wxUSE_TEXTCTRL