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 *start,
  42                              GtkTextIter *end,
  43                              char *prefix)
  44 {
  45     gchar *name;
  46     g_object_get (tag, "name", &name, NULL);
  47
  48     if (!name || strncmp(name, prefix, strlen(prefix)))
  49         // anonymous tag or not starting with prefix - don't remove
  50         g_signal_stop_emission_by_name (buffer, "remove_tag");
  51
  52     g_free(name);
  53 }
  54 }
  55
  56 // 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 #if GTK_CHECK_VERSION(2,2,0)
 203         if (!gtk_check_version(2,2,0))
 204             factor = (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 205                       gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 206         else
 207 #endif
 208             factor = (float)gdk_screen_width() / gdk_screen_width_mm() / 10;
 209
 210         const int indent = (int)(factor * attr.GetLeftIndent());
 211         const int subIndent = (int)(factor * attr.GetLeftSubIndent());
 212
 213         gint gindent;
 214         gint gsubindent;
 215
 216         if (subIndent >= 0)
 217         {
 218             gindent = indent;
 219             gsubindent = -subIndent;
 220         }
 221         else
 222         {
 223             gindent = -subIndent;
 224             gsubindent = indent;
 225         }
 226
 227         g_snprintf(buf, sizeof(buf), "WXINDENT %d %d", gindent, gsubindent);
 228         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 229                                         buf );
 230         if (!tag)
 231             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 232                                               "left-margin", gindent, "indent", gsubindent, NULL );
 233         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 234     }
 235
 236     if (attr.HasTabs())
 237     {
 238         // Set tab stops
 239
 240         // Clear old tabs
 241         GtkTextIter para_start, para_end = *end;
 242         gtk_text_buffer_get_iter_at_line( text_buffer,
 243                                           &para_start,
 244                                           gtk_text_iter_get_line(start) );
 245         gtk_text_iter_forward_line(&para_end);
 246
 247         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXTABS", start, end);
 248
 249         const wxArrayInt& tabs = attr.GetTabs();
 250
 251         wxString tagname = _T("WXTABS");
 252         g_snprintf(buf, sizeof(buf), "WXTABS");
 253         for (size_t i = 0; i < tabs.GetCount(); i++)
 254             tagname += wxString::Format(_T(" %d"), tabs[i]);
 255
 256         const wxWX2MBbuf buftag = tagname.utf8_str();
 257
 258         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 259                                         buftag );
 260         if (!tag)
 261         {
 262             // Factor to convert from 1/10th of a mm into pixels
 263             float factor;
 264 #if GTK_CHECK_VERSION(2,2,0)
 265             if (!gtk_check_version(2,2,0))
 266                 factor = (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 267                           gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 268             else
 269 #endif
 270                 factor = (float)gdk_screen_width() / gdk_screen_width_mm() / 10;
 271
 272             PangoTabArray* tabArray = pango_tab_array_new(tabs.GetCount(), TRUE);
 273             for (size_t i = 0; i < tabs.GetCount(); i++)
 274                 pango_tab_array_set_tab(tabArray, i, PANGO_TAB_LEFT, (gint)(tabs[i] * factor));
 275             tag = gtk_text_buffer_create_tag( text_buffer, buftag,
 276                                               "tabs", tabArray, NULL );
 277             pango_tab_array_free(tabArray);
 278         }
 279         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 280     }
 281 }
 282
 283 static void wxGtkTextInsert(GtkWidget *text,
 284                             GtkTextBuffer *text_buffer,
 285                             const wxTextAttr& attr,
 286                             const wxCharBuffer& buffer)
 287
 288 {
 289     gint start_offset;
 290     GtkTextIter iter, start;
 291
 292     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 293                                      gtk_text_buffer_get_insert (text_buffer) );
 294     start_offset = gtk_text_iter_get_offset (&iter);
 295     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 296
 297     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 298
 299     wxGtkTextApplyTagsFromAttr(text, text_buffer, attr, &start, &iter);
 300 }
 301
 302 // Implementation of wxTE_AUTO_URL for wxGTK2 by Mart Raudsepp,
 303
 304 extern "C" {
 305 static void
 306 au_apply_tag_callback(GtkTextBuffer *buffer,
 307                       GtkTextTag *tag,
 308                       GtkTextIter *start,
 309                       GtkTextIter *end,
 310                       gpointer textctrl)
 311 {
 312     if(tag == gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl"))
 313         g_signal_stop_emission_by_name (buffer, "apply_tag");
 314 }
 315 }
 316
 317 //-----------------------------------------------------------------------------
 318 //  GtkTextCharPredicates for gtk_text_iter_*_find_char
 319 //-----------------------------------------------------------------------------
 320
 321 extern "C" {
 322 static gboolean
 323 pred_whitespace (gunichar ch, gpointer user_data)
 324 {
 325     return g_unichar_isspace(ch);
 326 }
 327 }
 328
 329 extern "C" {
 330 static gboolean
 331 pred_non_whitespace (gunichar ch, gpointer user_data)
 332 {
 333     return !g_unichar_isspace(ch);
 334 }
 335 }
 336
 337 extern "C" {
 338 static gboolean
 339 pred_nonpunct (gunichar ch, gpointer user_data)
 340 {
 341     return !g_unichar_ispunct(ch);
 342 }
 343 }
 344
 345 extern "C" {
 346 static gboolean
 347 pred_nonpunct_or_slash (gunichar ch, gpointer user_data)
 348 {
 349     return !g_unichar_ispunct(ch) || ch == '/';
 350 }
 351 }
 352
 353 //-----------------------------------------------------------------------------
 354 //  Check for links between s and e and correct tags as necessary
 355 //-----------------------------------------------------------------------------
 356
 357 // This function should be made match better while being efficient at one point.
 358 // Most probably with a row of regular expressions.
 359 extern "C" {
 360 static void
 361 au_check_word( GtkTextIter *s, GtkTextIter *e )
 362 {
 363     static const char *URIPrefixes[] =
 364     {
 365         "http://",
 366         "ftp://",
 367         "www.",
 368         "ftp.",
 369         "mailto://",
 370         "https://",
 371         "file://",
 372         "nntp://",
 373         "news://",
 374         "telnet://",
 375         "mms://",
 376         "gopher://",
 377         "prospero://",
 378         "wais://",
 379     };
 380
 381     GtkTextIter start = *s, end = *e;
 382     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 383
 384     // Get our special link tag
 385     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 386
 387     // Get rid of punctuation from beginning and end.
 388     // Might want to move this to au_check_range if an improved link checking doesn't
 389     // use some intelligent punctuation checking itself (beware of undesired iter modifications).
 390     if(g_unichar_ispunct( gtk_text_iter_get_char( &start ) ) )
 391         gtk_text_iter_forward_find_char( &start, pred_nonpunct, NULL, e );
 392
 393     gtk_text_iter_backward_find_char( &end, pred_nonpunct_or_slash, NULL, &start );
 394     gtk_text_iter_forward_char(&end);
 395
 396     wxGtkString text(gtk_text_iter_get_text( &start, &end ));
 397     size_t len = strlen(text), prefix_len;
 398     size_t n;
 399
 400     for( n = 0; n < WXSIZEOF(URIPrefixes); ++n )
 401     {
 402         prefix_len = strlen(URIPrefixes[n]);
 403         if((len > prefix_len) && !strncasecmp(text, URIPrefixes[n], prefix_len))
 404             break;
 405     }
 406
 407     if(n < WXSIZEOF(URIPrefixes))
 408     {
 409         gulong signal_id = g_signal_handler_find (buffer,
 410                                                   (GSignalMatchType) (G_SIGNAL_MATCH_FUNC),
 411                                                   0, 0, NULL,
 412                                                   (gpointer)au_apply_tag_callback, NULL);
 413
 414         g_signal_handler_block (buffer, signal_id);
 415         gtk_text_buffer_apply_tag(buffer, tag, &start, &end);
 416         g_signal_handler_unblock (buffer, signal_id);
 417     }
 418 }
 419 }
 420
 421 extern "C" {
 422 static void
 423 au_check_range(GtkTextIter *s,
 424                GtkTextIter *range_end)
 425 {
 426     GtkTextIter range_start = *s;
 427     GtkTextIter word_end;
 428     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 429     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 430
 431     gtk_text_buffer_remove_tag(buffer, tag, s, range_end);
 432
 433     if(g_unichar_isspace(gtk_text_iter_get_char(&range_start)))
 434         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 435
 436     while(!gtk_text_iter_equal(&range_start, range_end))
 437     {
 438         word_end = range_start;
 439         gtk_text_iter_forward_find_char(&word_end, pred_whitespace, NULL, range_end);
 440
 441         // Now we should have a word delimited by range_start and word_end, correct link tags
 442         au_check_word(&range_start, &word_end);
 443
 444         range_start = word_end;
 445         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 446     }
 447 }
 448 }
 449
 450 //-----------------------------------------------------------------------------
 451 //  "insert-text" for GtkTextBuffer
 452 //-----------------------------------------------------------------------------
 453
 454 extern "C" {
 455 static void
 456 au_insert_text_callback(GtkTextBuffer *buffer,
 457                         GtkTextIter *end,
 458                         gchar *text,
 459                         gint len,
 460                         wxTextCtrl *win)
 461 {
 462     if (!len || !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 463         return;
 464
 465     GtkTextIter start = *end;
 466     gtk_text_iter_backward_chars(&start, g_utf8_strlen(text, len));
 467
 468     GtkTextIter line_start = start;
 469     GtkTextIter line_end = *end;
 470     GtkTextIter words_start = start;
 471     GtkTextIter words_end = *end;
 472
 473     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(&start));
 474     gtk_text_iter_forward_to_line_end(&line_end);
 475     gtk_text_iter_backward_find_char(&words_start, pred_whitespace, NULL, &line_start);
 476     gtk_text_iter_forward_find_char(&words_end, pred_whitespace, NULL, &line_end);
 477
 478     au_check_range(&words_start, &words_end);
 479 }
 480 }
 481
 482 //-----------------------------------------------------------------------------
 483 //  "delete-range" for GtkTextBuffer
 484 //-----------------------------------------------------------------------------
 485
 486 extern "C" {
 487 static void
 488 au_delete_range_callback(GtkTextBuffer *buffer,
 489                          GtkTextIter *start,
 490                          GtkTextIter *end,
 491                          wxTextCtrl *win)
 492 {
 493     if( !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 494         return;
 495
 496     GtkTextIter line_start = *start, line_end = *end;
 497
 498     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(start));
 499     gtk_text_iter_forward_to_line_end(&line_end);
 500     gtk_text_iter_backward_find_char(start, pred_whitespace, NULL, &line_start);
 501     gtk_text_iter_forward_find_char(end, pred_whitespace, NULL, &line_end);
 502
 503     au_check_range(start, end);
 504 }
 505 }
 506
 507
 508 //-----------------------------------------------------------------------------
 509 //  "changed"
 510 //-----------------------------------------------------------------------------
 511
 512 extern "C" {
 513 static void
 514 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
 515 {
 516     if ( win->IgnoreTextUpdate() )
 517         return;
 518
 519     if (!win->m_hasVMT) return;
 520
 521     if ( win->MarkDirtyOnChange() )
 522         win->MarkDirty();
 523
 524     win->SendTextUpdatedEvent();
 525 }
 526 }
 527
 528 //-----------------------------------------------------------------------------
 529 //  clipboard events: "copy-clipboard", "cut-clipboard", "paste-clipboard"
 530 //-----------------------------------------------------------------------------
 531
 532 // common part of the event handlers below
 533 static void
 534 handle_text_clipboard_callback( GtkWidget *widget, wxTextCtrl *win,
 535                                 wxEventType eventType, const gchar * signal_name)
 536 {
 537     wxClipboardTextEvent event( eventType, win->GetId() );
 538     event.SetEventObject( win );
 539     if ( win->GetEventHandler()->ProcessEvent( event ) )
 540     {
 541         // don't let the default processing to take place if we did something
 542         // ourselves in the event handler
 543         g_signal_stop_emission_by_name (widget, signal_name);
 544     }
 545 }
 546
 547 extern "C" {
 548 static void
 549 gtk_copy_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 550 {
 551     handle_text_clipboard_callback(
 552         widget, win, wxEVT_COMMAND_TEXT_COPY, "copy-clipboard" );
 553 }
 554
 555 static void
 556 gtk_cut_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 557 {
 558     handle_text_clipboard_callback(
 559         widget, win, wxEVT_COMMAND_TEXT_CUT, "cut-clipboard" );
 560 }
 561
 562 static void
 563 gtk_paste_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 564 {
 565     handle_text_clipboard_callback(
 566         widget, win, wxEVT_COMMAND_TEXT_PASTE, "paste-clipboard" );
 567 }
 568 }
 569
 570 //-----------------------------------------------------------------------------
 571 // "expose_event" from scrolled window and textview
 572 //-----------------------------------------------------------------------------
 573
 574 extern "C" {
 575 static gboolean
 576 gtk_text_exposed_callback( GtkWidget *widget, GdkEventExpose *event, wxTextCtrl *win )
 577 {
 578     return TRUE;
 579 }
 580 }
 581
 582
 583 //-----------------------------------------------------------------------------
 584 //  wxTextCtrl
 585 //-----------------------------------------------------------------------------
 586
 587 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 588
 589 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 590     EVT_CHAR(wxTextCtrl::OnChar)
 591
 592     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 593     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 594     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 595     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 596     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 597
 598     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 599     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 600     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 601     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 602     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 603
 604     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 605     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 606     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 607     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 608     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 609     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 610     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 611     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 612     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 613 END_EVENT_TABLE()
 614
 615 void wxTextCtrl::Init()
 616 {
 617     m_dontMarkDirty =
 618     m_modified = false;
 619
 620     m_countUpdatesToIgnore = 0;
 621
 622     SetUpdateFont(false);
 623
 624     m_text = NULL;
 625     m_freezeCount = 0;
 626     m_showPositionOnThaw = NULL;
 627     m_gdkHandCursor = NULL;
 628     m_gdkXTermCursor = NULL;
 629 }
 630
 631 wxTextCtrl::~wxTextCtrl()
 632 {
 633     if(m_gdkHandCursor)
 634         gdk_cursor_unref(m_gdkHandCursor);
 635     if(m_gdkXTermCursor)
 636         gdk_cursor_unref(m_gdkXTermCursor);
 637 }
 638
 639 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 640                         wxWindowID id,
 641                         const wxString &value,
 642                         const wxPoint &pos,
 643                         const wxSize &size,
 644                         long style,
 645                         const wxValidator& validator,
 646                         const wxString &name )
 647 {
 648     Init();
 649
 650     Create( parent, id, value, pos, size, style, validator, name );
 651 }
 652
 653 bool wxTextCtrl::Create( wxWindow *parent,
 654                          wxWindowID id,
 655                          const wxString &value,
 656                          const wxPoint &pos,
 657                          const wxSize &size,
 658                          long style,
 659                          const wxValidator& validator,
 660                          const wxString &name )
 661 {
 662     if (!PreCreation( parent, pos, size ) ||
 663         !CreateBase( parent, id, pos, size, style, validator, name ))
 664     {
 665         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 666         return false;
 667     }
 668
 669     bool multi_line = (style & wxTE_MULTILINE) != 0;
 670
 671     if (multi_line)
 672     {
 673         // Create view
 674         m_text = gtk_text_view_new();
 675
 676         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 677
 678         // create "ShowPosition" marker
 679         GtkTextIter iter;
 680         gtk_text_buffer_get_start_iter(m_buffer, &iter);
 681         gtk_text_buffer_create_mark(m_buffer, "ShowPosition", &iter, true);
 682
 683         // create scrolled window
 684         m_widget = gtk_scrolled_window_new( NULL, NULL );
 685         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 686                                         GTK_POLICY_AUTOMATIC,
 687                                         style & wxTE_NO_VSCROLL
 688                                             ? GTK_POLICY_NEVER
 689                                             : GTK_POLICY_AUTOMATIC );
 690         // for ScrollLines/Pages
 691         m_scrollBar[1] = (GtkRange*)((GtkScrolledWindow*)m_widget)->vscrollbar;
 692
 693         // Insert view into scrolled window
 694         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 695
 696         GTKSetWrapMode();
 697
 698         GtkScrolledWindowSetBorder(m_widget, style);
 699
 700         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 701
 702         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 703     }
 704     else
 705     {
 706         // a single-line text control: no need for scrollbars
 707         m_widget =
 708         m_text = gtk_entry_new();
 709
 710         if (style & wxNO_BORDER)
 711             g_object_set (m_text, "has-frame", FALSE, NULL);
 712     }
 713
 714     m_parent->DoAddChild( this );
 715
 716     m_focusWidget = m_text;
 717
 718     PostCreation(size);
 719
 720     if (multi_line)
 721     {
 722         gtk_widget_show(m_text);
 723     }
 724
 725     // We want to be notified about text changes.
 726     if (multi_line)
 727     {
 728         g_signal_connect (m_buffer, "changed",
 729                           G_CALLBACK (gtk_text_changed_callback), this);
 730     }
 731     else
 732     {
 733         g_signal_connect (m_text, "changed",
 734                           G_CALLBACK (gtk_text_changed_callback), this);
 735     }
 736
 737     if (!value.empty())
 738     {
 739         SetValue( value );
 740     }
 741
 742     if (style & wxTE_PASSWORD)
 743         GTKSetVisibility();
 744
 745     if (style & wxTE_READONLY)
 746         GTKSetEditable();
 747
 748     // left justification (alignment) is the default anyhow
 749     if ( style & (wxTE_RIGHT | wxTE_CENTRE) )
 750         GTKSetJustification();
 751
 752     if (multi_line)
 753     {
 754         // Handle URLs on multi-line controls with wxTE_AUTO_URL style
 755         if (style & wxTE_AUTO_URL)
 756         {
 757             GtkTextIter start, end;
 758             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 759             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 760
 761             // We create our wxUrl tag here for slight efficiency gain - we
 762             // don't have to check for the tag existance in callbacks,
 763             // hereby it's guaranteed to exist.
 764             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 765                                        "foreground", "blue",
 766                                        "underline", PANGO_UNDERLINE_SINGLE,
 767                                        NULL);
 768
 769             // Check for URLs after each text change
 770             g_signal_connect_after (m_buffer, "insert_text",
 771                                     G_CALLBACK (au_insert_text_callback), this);
 772             g_signal_connect_after (m_buffer, "delete_range",
 773                                     G_CALLBACK (au_delete_range_callback), this);
 774
 775             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 776             // block this callback temporarily. This takes care of gtk+ internal
 777             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 778             // which is undesired because only a part of the URL might be copied.
 779             // The insert-text signal emitted inside it will take care of newly formed
 780             // or wholly copied URLs.
 781             g_signal_connect (m_buffer, "apply_tag",
 782                               G_CALLBACK (au_apply_tag_callback), NULL);
 783
 784             // Check for URLs in the initial string passed to Create
 785             gtk_text_buffer_get_start_iter(m_buffer, &start);
 786             gtk_text_buffer_get_end_iter(m_buffer, &end);
 787             au_check_range(&start, &end);
 788         }
 789     }
 790
 791     g_signal_connect (m_text, "copy-clipboard",
 792                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 793     g_signal_connect (m_text, "cut-clipboard",
 794                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 795     g_signal_connect (m_text, "paste-clipboard",
 796                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 797
 798     m_cursor = wxCursor( wxCURSOR_IBEAM );
 799
 800     return true;
 801 }
 802
 803 GtkEditable *wxTextCtrl::GetEditable() const
 804 {
 805     wxCHECK_MSG( IsSingleLine(), NULL, "shouldn't be called for multiline" );
 806
 807     return GTK_EDITABLE(m_text);
 808 }
 809
 810 // ----------------------------------------------------------------------------
 811 // flags handling
 812 // ----------------------------------------------------------------------------
 813
 814 void wxTextCtrl::GTKSetEditable()
 815 {
 816     gboolean editable = !HasFlag(wxTE_READONLY);
 817     if ( IsSingleLine() )
 818         gtk_editable_set_editable(GTK_EDITABLE(m_text), editable);
 819     else
 820         gtk_text_view_set_editable(GTK_TEXT_VIEW(m_text), editable);
 821 }
 822
 823 void wxTextCtrl::GTKSetVisibility()
 824 {
 825     // VZ: shouldn't we assert if wxTE_PASSWORD is set for multiline control?
 826     if ( IsSingleLine() )
 827         gtk_entry_set_visibility(GTK_ENTRY(m_text), !HasFlag(wxTE_PASSWORD));
 828 }
 829
 830 void wxTextCtrl::GTKSetWrapMode()
 831 {
 832     // no wrapping in single line controls
 833     if ( !IsMultiLine() )
 834         return;
 835
 836     // translate wx wrapping style to GTK+
 837     GtkWrapMode wrap;
 838     if ( HasFlag( wxTE_DONTWRAP ) )
 839         wrap = GTK_WRAP_NONE;
 840     else if ( HasFlag( wxTE_CHARWRAP ) )
 841         wrap = GTK_WRAP_CHAR;
 842     else if ( HasFlag( wxTE_WORDWRAP ) )
 843         wrap = GTK_WRAP_WORD;
 844     else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 845     {
 846         // GTK_WRAP_WORD_CHAR seems to be new in GTK+ 2.4
 847 #ifdef __WXGTK24__
 848         if ( !gtk_check_version(2,4,0) )
 849         {
 850             wrap = GTK_WRAP_WORD_CHAR;
 851         }
 852         else
 853 #endif // __WXGTK24__
 854         wrap = GTK_WRAP_WORD;
 855     }
 856
 857     gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 858 }
 859
 860 void wxTextCtrl::GTKSetJustification()
 861 {
 862     if ( IsMultiLine() )
 863     {
 864         GtkJustification just;
 865         if ( HasFlag(wxTE_RIGHT) )
 866             just = GTK_JUSTIFY_RIGHT;
 867         else if ( HasFlag(wxTE_CENTRE) )
 868             just = GTK_JUSTIFY_CENTER;
 869         else // wxTE_LEFT == 0
 870             just = GTK_JUSTIFY_LEFT;
 871
 872         gtk_text_view_set_justification(GTK_TEXT_VIEW(m_text), just);
 873     }
 874     else // single line
 875     {
 876 #ifdef __WXGTK24__
 877         // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 878         if (!gtk_check_version(2,4,0))
 879         {
 880             gfloat align;
 881             if ( HasFlag(wxTE_RIGHT) )
 882                 align = 1.0;
 883             else if ( HasFlag(wxTE_CENTRE) )
 884                 align = 0.5;
 885             else // single line
 886                 align = 0.0;
 887
 888             gtk_entry_set_alignment(GTK_ENTRY(m_text), align);
 889         }
 890 #endif // __WXGTK24__
 891     }
 892
 893 }
 894
 895 void wxTextCtrl::SetWindowStyleFlag(long style)
 896 {
 897     long styleOld = GetWindowStyleFlag();
 898
 899     wxTextCtrlBase::SetWindowStyleFlag(style);
 900
 901     if ( (style & wxTE_READONLY) != (styleOld & wxTE_READONLY) )
 902         GTKSetEditable();
 903
 904     if ( (style & wxTE_PASSWORD) != (styleOld & wxTE_PASSWORD) )
 905         GTKSetVisibility();
 906
 907     static const long flagsWrap = wxTE_WORDWRAP | wxTE_CHARWRAP | wxTE_DONTWRAP;
 908     if ( (style & flagsWrap) != (styleOld & flagsWrap) )
 909         GTKSetWrapMode();
 910
 911     static const long flagsAlign = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 912     if ( (style & flagsAlign) != (styleOld & flagsAlign) )
 913         GTKSetJustification();
 914 }
 915
 916 // ----------------------------------------------------------------------------
 917 // control value
 918 // ----------------------------------------------------------------------------
 919
 920 wxString wxTextCtrl::GetValue() const
 921 {
 922     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 923
 924     if ( IsMultiLine() )
 925     {
 926         GtkTextIter start;
 927         gtk_text_buffer_get_start_iter( m_buffer, &start );
 928         GtkTextIter end;
 929         gtk_text_buffer_get_end_iter( m_buffer, &end );
 930         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 931
 932         return wxGTK_CONV_BACK(text);
 933     }
 934     else // single line
 935     {
 936         return wxTextEntry::GetValue();
 937     }
 938 }
 939
 940 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 941 {
 942     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 943     // encoding?
 944
 945     // first check the default text style (we intentionally don't check the
 946     // style for the current position as it doesn't make sense for SetValue())
 947     const wxTextAttr& style = GetDefaultStyle();
 948     wxFontEncoding enc = style.HasFontEncoding() ? style.GetFontEncoding()
 949                                          : wxFONTENCODING_SYSTEM;
 950
 951     // fall back to the controls font if no style
 952     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 953         enc = GetFont().GetEncoding();
 954
 955     return enc;
 956 }
 957
 958 bool wxTextCtrl::IsEmpty() const
 959 {
 960     if ( IsMultiLine() )
 961         return gtk_text_buffer_get_char_count(m_buffer) == 0;
 962
 963     return wxTextEntry::IsEmpty();
 964 }
 965
 966 void wxTextCtrl::DoSetValue( const wxString &value, int flags )
 967 {
 968     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 969
 970     m_modified = false;
 971
 972     if ( !IsMultiLine() )
 973     {
 974         wxTextEntry::DoSetValue(value, flags);
 975         return;
 976     }
 977
 978     wxFontEncoding enc = m_defaultStyle.HasFont()
 979                             ? m_defaultStyle.GetFont().GetEncoding()
 980                             : wxFONTENCODING_SYSTEM;
 981     if ( enc == wxFONTENCODING_SYSTEM )
 982         enc = GetTextEncoding();
 983
 984     const wxCharBuffer buffer(wxGTK_CONV_ENC(value, enc));
 985     if ( !buffer )
 986     {
 987         // see comment in WriteText() as to why we must warn the user about
 988         // this
 989         wxLogWarning(_("Failed to set text in the text control."));
 990         return;
 991     }
 992
 993     if ( !(flags & SetValue_SendEvent) )
 994     {
 995         EnableTextChangedEvents(false);
 996     }
 997
 998     gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 999
1000     if ( !m_defaultStyle.IsDefault() )
1001     {
1002         GtkTextIter start, end;
1003         gtk_text_buffer_get_bounds( m_buffer, &start, &end );
1004         wxGtkTextApplyTagsFromAttr(m_widget, m_buffer, m_defaultStyle,
1005                                    &start, &end);
1006     }
1007
1008     if ( !(flags & SetValue_SendEvent) )
1009     {
1010         EnableTextChangedEvents(true);
1011     }
1012
1013     // This was added after discussion on the list
1014     SetInsertionPoint(0);
1015 }
1016
1017 void wxTextCtrl::WriteText( const wxString &text )
1018 {
1019     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1020
1021     // we're changing the text programmatically
1022     DontMarkDirtyOnNextChange();
1023
1024     if ( !IsMultiLine() )
1025     {
1026         wxTextEntry::WriteText(text);
1027         return;
1028     }
1029
1030     // check if we have a specific style for the current position
1031     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
1032     wxTextAttr style;
1033     if ( GetStyle(GetInsertionPoint(), style) && style.HasFontEncoding() )
1034     {
1035         enc = style.GetFontEncoding();
1036     }
1037
1038     if ( enc == wxFONTENCODING_SYSTEM )
1039         enc = GetTextEncoding();
1040
1041     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
1042     if ( !buffer )
1043     {
1044         // we must log an error here as losing the text like this can be a
1045         // serious problem (e.g. imagine the document edited by user being
1046         // empty instead of containing the correct text)
1047         wxLogWarning(_("Failed to insert text in the control."));
1048         return;
1049     }
1050
1051     // First remove the selection if there is one
1052     // TODO:  Is there an easier GTK specific way to do this?
1053     long from, to;
1054     GetSelection(&from, &to);
1055     if (from != to)
1056         Remove(from, to);
1057
1058     // Insert the text
1059     wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
1060
1061     GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
1062     // Scroll to cursor, but only if scrollbar thumb is at the very bottom
1063     // won't work when frozen, text view is not using m_buffer then
1064     if (!IsFrozen() && wxIsSameDouble(adj->value, adj->upper - adj->page_size))
1065     {
1066         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
1067                 gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
1068     }
1069 }
1070
1071 wxString wxTextCtrl::GetLineText( long lineNo ) const
1072 {
1073     wxString result;
1074     if ( IsMultiLine() )
1075     {
1076         GtkTextIter line;
1077         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
1078
1079         GtkTextIter end = line;
1080         // avoid skipping to the next line end if this one is empty
1081         if ( !gtk_text_iter_ends_line(&line) )
1082             gtk_text_iter_forward_to_line_end(&end);
1083
1084         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
1085         result = wxGTK_CONV_BACK(text);
1086     }
1087     else
1088     {
1089         if (lineNo == 0)
1090             result = GetValue();
1091     }
1092     return result;
1093 }
1094
1095 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
1096 {
1097   /* If you implement this, don't forget to update the documentation!
1098    * (file docs/latex/wx/text.tex) */
1099     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
1100 }
1101
1102 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
1103 {
1104     if ( IsMultiLine() )
1105     {
1106         GtkTextIter iter;
1107
1108         if (pos > GetLastPosition())
1109             return false;
1110
1111         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
1112
1113         if ( y )
1114             *y = gtk_text_iter_get_line(&iter);
1115         if ( x )
1116             *x = gtk_text_iter_get_line_offset(&iter);
1117     }
1118     else // single line control
1119     {
1120         if ( pos <= GTK_ENTRY(m_text)->text_length )
1121         {
1122             if ( y )
1123                 *y = 0;
1124             if ( x )
1125                 *x = pos;
1126         }
1127         else
1128         {
1129             // index out of bounds
1130             return false;
1131         }
1132     }
1133
1134     return true;
1135 }
1136
1137 long wxTextCtrl::XYToPosition(long x, long y ) const
1138 {
1139     if ( IsSingleLine() )
1140         return 0;
1141
1142     GtkTextIter iter;
1143     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1144         return -1;
1145
1146     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1147     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1148         return -1;
1149
1150     return gtk_text_iter_get_offset(&iter) + x;
1151 }
1152
1153 int wxTextCtrl::GetLineLength(long lineNo) const
1154 {
1155     if ( IsMultiLine() )
1156     {
1157         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1158         if (lineNo > last_line)
1159             return -1;
1160
1161         GtkTextIter iter;
1162         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1163         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1164         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1165     }
1166     else
1167     {
1168         wxString str = GetLineText (lineNo);
1169         return (int) str.length();
1170     }
1171 }
1172
1173 int wxTextCtrl::GetNumberOfLines() const
1174 {
1175     if ( IsMultiLine() )
1176     {
1177         return gtk_text_buffer_get_line_count( m_buffer );
1178     }
1179     else // single line
1180     {
1181         return 1;
1182     }
1183 }
1184
1185 void wxTextCtrl::SetInsertionPoint( long pos )
1186 {
1187     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1188
1189     if ( IsMultiLine() )
1190     {
1191         GtkTextIter iter;
1192         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1193         gtk_text_buffer_place_cursor( m_buffer, &iter );
1194         GtkTextMark* mark = gtk_text_buffer_get_insert(m_buffer);
1195         if (IsFrozen())
1196             // defer until Thaw, text view is not using m_buffer now
1197             m_showPositionOnThaw = mark;
1198         else
1199             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1200     }
1201     else // single line
1202     {
1203         wxTextEntry::SetInsertionPoint(pos);
1204     }
1205 }
1206
1207 void wxTextCtrl::SetEditable( bool editable )
1208 {
1209     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1210
1211     if ( IsMultiLine() )
1212     {
1213         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1214     }
1215     else // single line
1216     {
1217         wxTextEntry::SetEditable(editable);
1218     }
1219 }
1220
1221 bool wxTextCtrl::Enable( bool enable )
1222 {
1223     if (!wxWindowBase::Enable(enable))
1224     {
1225         // nothing to do
1226         return false;
1227     }
1228
1229     gtk_widget_set_sensitive( m_text, enable );
1230
1231     return true;
1232 }
1233
1234 // wxGTK-specific: called recursively by Enable,
1235 // to give widgets an opportunity to correct their colours after they
1236 // have been changed by Enable
1237 void wxTextCtrl::OnEnabled( bool enable )
1238 {
1239     // If we have a custom background colour, we use this colour in both
1240     // disabled and enabled mode, or we end up with a different colour under the
1241     // text.
1242     wxColour oldColour = GetBackgroundColour();
1243     if (oldColour.Ok())
1244     {
1245         // Need to set twice or it'll optimize the useful stuff out
1246         if (oldColour == * wxWHITE)
1247             SetBackgroundColour(*wxBLACK);
1248         else
1249             SetBackgroundColour(*wxWHITE);
1250         SetBackgroundColour(oldColour);
1251     }
1252 }
1253
1254 void wxTextCtrl::MarkDirty()
1255 {
1256     m_modified = true;
1257 }
1258
1259 void wxTextCtrl::DiscardEdits()
1260 {
1261     m_modified = false;
1262 }
1263
1264 // ----------------------------------------------------------------------------
1265 // event handling
1266 // ----------------------------------------------------------------------------
1267
1268 void wxTextCtrl::EnableTextChangedEvents(bool enable)
1269 {
1270     if ( enable )
1271     {
1272         g_signal_handlers_unblock_by_func(GetTextObject(),
1273             (gpointer)gtk_text_changed_callback, this);
1274     }
1275     else // disable events
1276     {
1277         g_signal_handlers_block_by_func(GetTextObject(),
1278             (gpointer)gtk_text_changed_callback, this);
1279     }
1280 }
1281
1282 bool wxTextCtrl::IgnoreTextUpdate()
1283 {
1284     if ( m_countUpdatesToIgnore > 0 )
1285     {
1286         m_countUpdatesToIgnore--;
1287
1288         return true;
1289     }
1290
1291     return false;
1292 }
1293
1294 bool wxTextCtrl::MarkDirtyOnChange()
1295 {
1296     if ( m_dontMarkDirty )
1297     {
1298         m_dontMarkDirty = false;
1299
1300         return false;
1301     }
1302
1303     return true;
1304 }
1305
1306 void wxTextCtrl::SetSelection( long from, long to )
1307 {
1308     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1309
1310     if (from == -1 && to == -1)
1311     {
1312         from = 0;
1313         to = GetValue().length();
1314     }
1315
1316     if ( IsMultiLine() )
1317     {
1318         GtkTextIter fromi, toi;
1319         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1320         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1321
1322         gtk_text_buffer_place_cursor( m_buffer, &toi );
1323         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1324     }
1325     else // single line
1326     {
1327         wxTextEntry::SetSelection(from, to);
1328     }
1329 }
1330
1331 void wxTextCtrl::ShowPosition( long pos )
1332 {
1333     if (IsMultiLine())
1334     {
1335         GtkTextIter iter;
1336         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, int(pos));
1337         GtkTextMark* mark = gtk_text_buffer_get_mark(m_buffer, "ShowPosition");
1338         gtk_text_buffer_move_mark(m_buffer, mark, &iter);
1339         if (IsFrozen())
1340             // defer until Thaw, text view is not using m_buffer now
1341             m_showPositionOnThaw = mark;
1342         else
1343             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1344     }
1345 }
1346
1347 wxTextCtrlHitTestResult
1348 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1349 {
1350     if ( !IsMultiLine() )
1351     {
1352         // not supported
1353         return wxTE_HT_UNKNOWN;
1354     }
1355
1356     int x, y;
1357     gtk_text_view_window_to_buffer_coords
1358     (
1359         GTK_TEXT_VIEW(m_text),
1360         GTK_TEXT_WINDOW_TEXT,
1361         pt.x, pt.y,
1362         &x, &y
1363     );
1364
1365     GtkTextIter iter;
1366     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1367     if ( pos )
1368         *pos = gtk_text_iter_get_offset(&iter);
1369
1370     return wxTE_HT_ON_TEXT;
1371 }
1372
1373 long wxTextCtrl::GetInsertionPoint() const
1374 {
1375     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1376
1377     if ( IsMultiLine() )
1378     {
1379         // There is no direct accessor for the cursor, but
1380         // internally, the cursor is the "mark" called
1381         // "insert" in the text view's btree structure.
1382
1383         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1384         GtkTextIter cursor;
1385         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1386
1387         return gtk_text_iter_get_offset( &cursor );
1388     }
1389     else
1390     {
1391         return wxTextEntry::GetInsertionPoint();
1392     }
1393 }
1394
1395 wxTextPos wxTextCtrl::GetLastPosition() const
1396 {
1397     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1398
1399     int pos = 0;
1400
1401     if ( IsMultiLine() )
1402     {
1403         GtkTextIter end;
1404         gtk_text_buffer_get_end_iter( m_buffer, &end );
1405
1406         pos = gtk_text_iter_get_offset( &end );
1407     }
1408     else // single line
1409     {
1410         pos = wxTextEntry::GetLastPosition();
1411     }
1412
1413     return (long)pos;
1414 }
1415
1416 void wxTextCtrl::Remove( long from, long to )
1417 {
1418     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1419
1420     if ( IsMultiLine() )
1421     {
1422         GtkTextIter fromi, toi;
1423         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1424         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1425
1426         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1427     }
1428     else // single line
1429     {
1430         wxTextEntry::Remove(from, to);
1431     }
1432 }
1433
1434 void wxTextCtrl::Cut()
1435 {
1436     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1437
1438     if ( IsMultiLine() )
1439         g_signal_emit_by_name (m_text, "cut-clipboard");
1440     else
1441         wxTextEntry::Cut();
1442 }
1443
1444 void wxTextCtrl::Copy()
1445 {
1446     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1447
1448     if ( IsMultiLine() )
1449         g_signal_emit_by_name (m_text, "copy-clipboard");
1450     else
1451         wxTextEntry::Copy();
1452 }
1453
1454 void wxTextCtrl::Paste()
1455 {
1456     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1457
1458     if ( IsMultiLine() )
1459         g_signal_emit_by_name (m_text, "paste-clipboard");
1460     else
1461         wxTextEntry::Paste();
1462 }
1463
1464 // If the return values from and to are the same, there is no
1465 // selection.
1466 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1467 {
1468     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1469
1470     if ( !IsMultiLine() )
1471     {
1472         wxTextEntry::GetSelection(fromOut, toOut);
1473         return;
1474     }
1475
1476     gint from, to;
1477
1478     GtkTextIter ifrom, ito;
1479     if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1480     {
1481         from = gtk_text_iter_get_offset(&ifrom);
1482         to = gtk_text_iter_get_offset(&ito);
1483
1484         if ( from > to )
1485         {
1486             // exchange them to be compatible with wxMSW
1487             gint tmp = from;
1488             from = to;
1489             to = tmp;
1490         }
1491     }
1492     else // no selection
1493     {
1494         from =
1495         to = GetInsertionPoint();
1496     }
1497
1498     if ( fromOut )
1499         *fromOut = from;
1500     if ( toOut )
1501         *toOut = to;
1502 }
1503
1504
1505 bool wxTextCtrl::IsEditable() const
1506 {
1507     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1508
1509     if ( IsMultiLine() )
1510     {
1511         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1512     }
1513     else
1514     {
1515         return wxTextEntry::IsEditable();
1516     }
1517 }
1518
1519 bool wxTextCtrl::IsModified() const
1520 {
1521     return m_modified;
1522 }
1523
1524 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1525 {
1526     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1527
1528     if ( key_event.GetKeyCode() == WXK_RETURN )
1529     {
1530         if ( HasFlag(wxTE_PROCESS_ENTER) )
1531         {
1532             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1533             event.SetEventObject(this);
1534             event.SetString(GetValue());
1535             if ( GetEventHandler()->ProcessEvent(event) )
1536                 return;
1537         }
1538
1539         // FIXME: this is not the right place to do it, wxDialog::OnCharHook()
1540         //        probably is
1541         if ( IsSingleLine() )
1542         {
1543             // This will invoke the dialog default action, such
1544             // as the clicking the default button.
1545
1546             wxWindow *top_frame = m_parent;
1547             while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1548                 top_frame = top_frame->GetParent();
1549
1550             if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1551             {
1552                 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1553
1554                 if (window->default_widget)
1555                 {
1556                     gtk_widget_activate (window->default_widget);
1557                     return;
1558                 }
1559             }
1560         }
1561     }
1562
1563     key_event.Skip();
1564 }
1565
1566 GtkWidget* wxTextCtrl::GetConnectWidget()
1567 {
1568     return GTK_WIDGET(m_text);
1569 }
1570
1571 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1572 {
1573     if ( IsMultiLine() )
1574     {
1575         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1576                                         GTK_TEXT_WINDOW_TEXT );
1577     }
1578     else
1579     {
1580         return GTK_ENTRY(m_text)->text_area;
1581     }
1582 }
1583
1584 // the font will change for subsequent text insertiongs
1585 bool wxTextCtrl::SetFont( const wxFont &font )
1586 {
1587     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1588
1589     if ( !wxTextCtrlBase::SetFont(font) )
1590     {
1591         // font didn't change, nothing to do
1592         return false;
1593     }
1594
1595     if ( IsMultiLine() )
1596     {
1597         SetUpdateFont(true);
1598
1599         m_defaultStyle.SetFont(font);
1600
1601         ChangeFontGlobally();
1602     }
1603
1604     return true;
1605 }
1606
1607 void wxTextCtrl::ChangeFontGlobally()
1608 {
1609     // this method is very inefficient and hence should be called as rarely as
1610     // possible!
1611     //
1612     // TODO: it can be implemented much more efficiently for GTK2
1613     wxASSERT_MSG( IsMultiLine(),
1614                   _T("shouldn't be called for single line controls") );
1615
1616     wxString value = GetValue();
1617     if ( !value.empty() )
1618     {
1619         SetUpdateFont(false);
1620
1621         Clear();
1622         AppendText(value);
1623     }
1624 }
1625
1626 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1627 {
1628     if ( !wxControl::SetForegroundColour(colour) )
1629         return false;
1630
1631     // update default fg colour too
1632     m_defaultStyle.SetTextColour(colour);
1633
1634     return true;
1635 }
1636
1637 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1638 {
1639     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1640
1641     if ( !wxControl::SetBackgroundColour( colour ) )
1642         return false;
1643
1644     if (!m_backgroundColour.Ok())
1645         return false;
1646
1647     // change active background color too
1648     m_defaultStyle.SetBackgroundColour( colour );
1649
1650     return true;
1651 }
1652
1653 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1654 {
1655     if ( IsMultiLine() )
1656     {
1657         if ( style.IsDefault() )
1658         {
1659             // nothing to do
1660             return true;
1661         }
1662
1663         gint l = gtk_text_buffer_get_char_count( m_buffer );
1664
1665         wxCHECK_MSG( start >= 0 && end <= l, false,
1666                      _T("invalid range in wxTextCtrl::SetStyle") );
1667
1668         GtkTextIter starti, endi;
1669         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1670         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1671
1672         wxGtkTextApplyTagsFromAttr( m_widget, m_buffer, style, &starti, &endi );
1673
1674         return true;
1675     }
1676     //else: single line text controls don't support styles
1677
1678     return false;
1679 }
1680
1681 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1682 {
1683     gtk_widget_modify_style(m_text, style);
1684 }
1685
1686 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1687 {
1688     Cut();
1689 }
1690
1691 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1692 {
1693     Copy();
1694 }
1695
1696 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1697 {
1698     Paste();
1699 }
1700
1701 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1702 {
1703     Undo();
1704 }
1705
1706 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1707 {
1708     Redo();
1709 }
1710
1711 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1712 {
1713     event.Enable( CanCut() );
1714 }
1715
1716 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1717 {
1718     event.Enable( CanCopy() );
1719 }
1720
1721 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1722 {
1723     event.Enable( CanPaste() );
1724 }
1725
1726 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1727 {
1728     event.Enable( CanUndo() );
1729 }
1730
1731 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1732 {
1733     event.Enable( CanRedo() );
1734 }
1735
1736 wxSize wxTextCtrl::DoGetBestSize() const
1737 {
1738     // FIXME should be different for multi-line controls...
1739     wxSize ret( wxControl::DoGetBestSize() );
1740     wxSize best(80, ret.y);
1741     CacheBestSize(best);
1742     return best;
1743 }
1744
1745 // ----------------------------------------------------------------------------
1746 // freeze/thaw
1747 // ----------------------------------------------------------------------------
1748
1749 void wxTextCtrl::Freeze()
1750 {
1751     wxCHECK_RET(m_text != NULL, wxT("invalid text ctrl"));
1752
1753     if ( HasFlag(wxTE_MULTILINE) )
1754     {
1755         if (m_freezeCount++ == 0)
1756         {
1757             // freeze textview updates and remove buffer
1758             g_signal_connect (m_text, "expose_event",
1759                               G_CALLBACK (gtk_text_exposed_callback), this);
1760             g_signal_connect (m_widget, "expose_event",
1761                               G_CALLBACK (gtk_text_exposed_callback), this);
1762             gtk_widget_set_sensitive(m_widget, false);
1763             g_object_ref(m_buffer);
1764             GtkTextBuffer* buf_new = gtk_text_buffer_new(NULL);
1765             GtkTextMark* mark = GTK_TEXT_VIEW(m_text)->first_para_mark;
1766             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), buf_new);
1767             // gtk_text_view_set_buffer adds its own reference
1768             g_object_unref(buf_new);
1769             // This mark should be deleted when the buffer is changed,
1770             // but it's not (in GTK+ up to at least 2.10.6).
1771             // Otherwise these anonymous marks start to build up in the buffer,
1772             // and Freeze takes longer and longer each time it is called.
1773             if (GTK_IS_TEXT_MARK(mark) && !gtk_text_mark_get_deleted(mark))
1774                 gtk_text_buffer_delete_mark(m_buffer, mark);
1775         }
1776     }
1777 }
1778
1779 void wxTextCtrl::Thaw()
1780 {
1781     if ( HasFlag(wxTE_MULTILINE) )
1782     {
1783         wxCHECK_RET(m_freezeCount != 0, _T("Thaw() without matching Freeze()"));
1784
1785         if (--m_freezeCount == 0)
1786         {
1787             // Reattach buffer and thaw textview updates
1788             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1789             g_object_unref(m_buffer);
1790             gtk_widget_set_sensitive(m_widget, true);
1791             g_signal_handlers_disconnect_by_func (m_widget,
1792                     (gpointer) gtk_text_exposed_callback, this);
1793             g_signal_handlers_disconnect_by_func (m_text,
1794                     (gpointer) gtk_text_exposed_callback, this);
1795             if (m_showPositionOnThaw != NULL)
1796             {
1797                 gtk_text_view_scroll_mark_onscreen(
1798                     GTK_TEXT_VIEW(m_text), m_showPositionOnThaw);
1799                 m_showPositionOnThaw = NULL;
1800             }
1801         }
1802     }
1803 }
1804
1805 // ----------------------------------------------------------------------------
1806 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1807 // ----------------------------------------------------------------------------
1808
1809 // FIXME: when dragging on a link the sample gets an "Unknown event".
1810 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1811 // a buggy sample, or something else
1812 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1813 {
1814     event.Skip();
1815     if( !HasFlag(wxTE_AUTO_URL) )
1816         return;
1817
1818     gint x, y;
1819     GtkTextIter start, end;
1820     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1821                                                 "wxUrl");
1822
1823     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1824                                           event.GetX(), event.GetY(), &x, &y);
1825
1826     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1827     if (!gtk_text_iter_has_tag(&end, tag))
1828     {
1829         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1830                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1831         return;
1832     }
1833
1834     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1835                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1836
1837     start = end;
1838     if(!gtk_text_iter_begins_tag(&start, tag))
1839         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1840     if(!gtk_text_iter_ends_tag(&end, tag))
1841         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1842
1843     // Native context menu is probably not desired on an URL.
1844     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1845     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1846         event.Skip(false);
1847
1848     wxTextUrlEvent url_event(m_windowId, event,
1849                              gtk_text_iter_get_offset(&start),
1850                              gtk_text_iter_get_offset(&end));
1851
1852     InitCommandEvent(url_event);
1853     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1854     //event.Skip(!GetEventHandler()->ProcessEvent(url_event));
1855     GetEventHandler()->ProcessEvent(url_event);
1856 }
1857
1858 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
1859 {
1860     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
1861
1862     // GtkTextView starts a drag operation when left mouse button is pressed
1863     // and ends it when it is released and if it doesn't get the release event
1864     // the next click on a control results in an assertion failure inside
1865     // gtk_text_view_start_selection_drag() which simply *kills* the program
1866     // without anything we can do about it, so always let GTK+ have this event
1867     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
1868 }
1869
1870 // static
1871 wxVisualAttributes
1872 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1873 {
1874     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1875 }
1876
1877 #endif // wxUSE_TEXTCTRL