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/scopeguard.h"
  26 #include "wx/strconv.h"
  27 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  28
  29 #include <sys/types.h>
  30 #include <sys/stat.h>
  31 #include <ctype.h>
  32
  33 #include "wx/gtk/private.h"
  34
  35 // ----------------------------------------------------------------------------
  36 // helpers
  37 // ----------------------------------------------------------------------------
  38
  39 extern "C" {
  40 static void wxGtkOnRemoveTag(GtkTextBuffer *buffer,
  41                              GtkTextTag *tag,
  42                              GtkTextIter * WXUNUSED(start),
  43                              GtkTextIter * WXUNUSED(end),
  44                              char *prefix)
  45 {
  46     gchar *name;
  47     g_object_get (tag, "name", &name, NULL);
  48
  49     if (!name || strncmp(name, prefix, strlen(prefix)))
  50         // anonymous tag or not starting with prefix - don't remove
  51         g_signal_stop_emission_by_name (buffer, "remove_tag");
  52
  53     g_free(name);
  54 }
  55 }
  56
  57 // remove all tags starting with the given prefix from the start..end range
  58 static void
  59 wxGtkTextRemoveTagsWithPrefix(GtkTextBuffer *text_buffer,
  60                               const char *prefix,
  61                               GtkTextIter *start,
  62                               GtkTextIter *end)
  63 {
  64     gulong remove_handler_id = g_signal_connect
  65                                (
  66                                 text_buffer,
  67                                 "remove_tag",
  68                                 G_CALLBACK(wxGtkOnRemoveTag),
  69                                 gpointer(prefix)
  70                                );
  71     gtk_text_buffer_remove_all_tags(text_buffer, start, end);
  72     g_signal_handler_disconnect(text_buffer, remove_handler_id);
  73 }
  74
  75 static void wxGtkTextApplyTagsFromAttr(GtkWidget *text,
  76                                        GtkTextBuffer *text_buffer,
  77                                        const wxTextAttr& attr,
  78                                        GtkTextIter *start,
  79                                        GtkTextIter *end)
  80 {
  81     static gchar buf[1024];
  82     GtkTextTag *tag;
  83
  84     if (attr.HasFont())
  85     {
  86         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXFONT", start, end);
  87
  88         wxFont font(attr.GetFont());
  89
  90         PangoFontDescription *font_description = font.GetNativeFontInfo()->description;
  91         wxGtkString font_string(pango_font_description_to_string(font_description));
  92         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string.c_str());
  93         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  94                                          buf );
  95         if (!tag)
  96             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  97                                               "font-desc", font_description,
  98                                               NULL );
  99         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 100
 101         if (font.GetUnderlined())
 102         {
 103             g_snprintf(buf, sizeof(buf), "WXFONTUNDERLINE");
 104             tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 105                                              buf );
 106             if (!tag)
 107                 tag = gtk_text_buffer_create_tag( text_buffer, buf,
 108                                                   "underline-set", TRUE,
 109                                                   "underline", PANGO_UNDERLINE_SINGLE,
 110                                                   NULL );
 111             gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 112         }
 113     }
 114
 115     if (attr.HasTextColour())
 116     {
 117         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXFORECOLOR", start, end);
 118
 119         const GdkColor *colFg = attr.GetTextColour().GetColor();
 120         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
 121                    colFg->red, colFg->green, colFg->blue);
 122         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 123                                          buf );
 124         if (!tag)
 125             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 126                                               "foreground-gdk", colFg, NULL );
 127         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 128     }
 129
 130     if (attr.HasBackgroundColour())
 131     {
 132         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXBACKCOLOR", start, end);
 133
 134         const GdkColor *colBg = attr.GetBackgroundColour().GetColor();
 135         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
 136                    colBg->red, colBg->green, colBg->blue);
 137         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 138                                          buf );
 139         if (!tag)
 140             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 141                                               "background-gdk", colBg, NULL );
 142         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 143     }
 144
 145     if (attr.HasAlignment())
 146     {
 147         GtkTextIter para_start, para_end = *end;
 148         gtk_text_buffer_get_iter_at_line( text_buffer,
 149                                           &para_start,
 150                                           gtk_text_iter_get_line(start) );
 151         gtk_text_iter_forward_line(&para_end);
 152
 153         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXALIGNMENT", &para_start, &para_end);
 154
 155         GtkJustification align;
 156         switch (attr.GetAlignment())
 157         {
 158             default:
 159                 align = GTK_JUSTIFY_LEFT;
 160                 break;
 161             case wxTEXT_ALIGNMENT_RIGHT:
 162                 align = GTK_JUSTIFY_RIGHT;
 163                 break;
 164             case wxTEXT_ALIGNMENT_CENTER:
 165                 align = GTK_JUSTIFY_CENTER;
 166                 break;
 167 // gtk+ doesn't support justify before gtk+-2.11.0 with pango-1.17 being available
 168 // (but if new enough pango isn't available it's a mere gtk warning)
 169 #if GTK_CHECK_VERSION(2,11,0)
 170             case wxTEXT_ALIGNMENT_JUSTIFIED:
 171                 if (!gtk_check_version(2,11,0))
 172                     align = GTK_JUSTIFY_FILL;
 173                 else
 174                     align = GTK_JUSTIFY_LEFT;
 175                 break;
 176 #endif
 177         }
 178
 179         g_snprintf(buf, sizeof(buf), "WXALIGNMENT %d", align);
 180         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 181                                          buf );
 182         if (!tag)
 183             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 184                                               "justification", align, NULL );
 185         gtk_text_buffer_apply_tag( text_buffer, tag, &para_start, &para_end );
 186     }
 187
 188     if (attr.HasLeftIndent())
 189     {
 190         // Indentation attribute
 191
 192         // Clear old indentation tags
 193         GtkTextIter para_start, para_end = *end;
 194         gtk_text_buffer_get_iter_at_line( text_buffer,
 195                                           &para_start,
 196                                           gtk_text_iter_get_line(start) );
 197         gtk_text_iter_forward_line(&para_end);
 198
 199         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXINDENT", &para_start, &para_end);
 200
 201         // Convert indent from 1/10th of a mm into pixels
 202         float factor =
 203             (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 204                       gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 205
 206         const int indent = (int)(factor * attr.GetLeftIndent());
 207         const int subIndent = (int)(factor * attr.GetLeftSubIndent());
 208
 209         gint gindent;
 210         gint gsubindent;
 211
 212         if (subIndent >= 0)
 213         {
 214             gindent = indent;
 215             gsubindent = -subIndent;
 216         }
 217         else
 218         {
 219             gindent = -subIndent;
 220             gsubindent = indent;
 221         }
 222
 223         g_snprintf(buf, sizeof(buf), "WXINDENT %d %d", gindent, gsubindent);
 224         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 225                                         buf );
 226         if (!tag)
 227             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 228                                               "left-margin", gindent, "indent", gsubindent, NULL );
 229         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 230     }
 231
 232     if (attr.HasTabs())
 233     {
 234         // Set tab stops
 235
 236         // Clear old tabs
 237         GtkTextIter para_start, para_end = *end;
 238         gtk_text_buffer_get_iter_at_line( text_buffer,
 239                                           &para_start,
 240                                           gtk_text_iter_get_line(start) );
 241         gtk_text_iter_forward_line(&para_end);
 242
 243         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXTABS", &para_start, &para_end);
 244
 245         const wxArrayInt& tabs = attr.GetTabs();
 246
 247         wxString tagname = wxT("WXTABS");
 248         g_snprintf(buf, sizeof(buf), "WXTABS");
 249         for (size_t i = 0; i < tabs.GetCount(); i++)
 250             tagname += wxString::Format(wxT(" %d"), tabs[i]);
 251
 252         const wxWX2MBbuf buftag = tagname.utf8_str();
 253
 254         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 255                                         buftag );
 256         if (!tag)
 257         {
 258             // Factor to convert from 1/10th of a mm into pixels
 259             float factor =
 260                 (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 261                           gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 262
 263             PangoTabArray* tabArray = pango_tab_array_new(tabs.GetCount(), TRUE);
 264             for (size_t i = 0; i < tabs.GetCount(); i++)
 265                 pango_tab_array_set_tab(tabArray, i, PANGO_TAB_LEFT, (gint)(tabs[i] * factor));
 266             tag = gtk_text_buffer_create_tag( text_buffer, buftag,
 267                                               "tabs", tabArray, NULL );
 268             pango_tab_array_free(tabArray);
 269         }
 270         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 271     }
 272 }
 273
 274 static void wxGtkTextInsert(GtkWidget *text,
 275                             GtkTextBuffer *text_buffer,
 276                             const wxTextAttr& attr,
 277                             const wxCharBuffer& buffer)
 278
 279 {
 280     gint start_offset;
 281     GtkTextIter iter, start;
 282
 283     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 284                                      gtk_text_buffer_get_insert (text_buffer) );
 285     start_offset = gtk_text_iter_get_offset (&iter);
 286     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 287
 288     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 289
 290     wxGtkTextApplyTagsFromAttr(text, text_buffer, attr, &start, &iter);
 291 }
 292
 293 // Implementation of wxTE_AUTO_URL for wxGTK2 by Mart Raudsepp,
 294
 295 extern "C" {
 296 static void
 297 au_apply_tag_callback(GtkTextBuffer *buffer,
 298                       GtkTextTag *tag,
 299                       GtkTextIter * WXUNUSED(start),
 300                       GtkTextIter * WXUNUSED(end),
 301                       gpointer WXUNUSED(textctrl))
 302 {
 303     if(tag == gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl"))
 304         g_signal_stop_emission_by_name (buffer, "apply_tag");
 305 }
 306 }
 307
 308 //-----------------------------------------------------------------------------
 309 //  GtkTextCharPredicates for gtk_text_iter_*_find_char
 310 //-----------------------------------------------------------------------------
 311
 312 extern "C" {
 313 static gboolean
 314 pred_whitespace(gunichar ch, gpointer WXUNUSED(user_data))
 315 {
 316     return g_unichar_isspace(ch);
 317 }
 318 }
 319
 320 extern "C" {
 321 static gboolean
 322 pred_non_whitespace (gunichar ch, gpointer WXUNUSED(user_data))
 323 {
 324     return !g_unichar_isspace(ch);
 325 }
 326 }
 327
 328 extern "C" {
 329 static gboolean
 330 pred_nonpunct (gunichar ch, gpointer WXUNUSED(user_data))
 331 {
 332     return !g_unichar_ispunct(ch);
 333 }
 334 }
 335
 336 extern "C" {
 337 static gboolean
 338 pred_nonpunct_or_slash (gunichar ch, gpointer WXUNUSED(user_data))
 339 {
 340     return !g_unichar_ispunct(ch) || ch == '/';
 341 }
 342 }
 343
 344 //-----------------------------------------------------------------------------
 345 //  Check for links between s and e and correct tags as necessary
 346 //-----------------------------------------------------------------------------
 347
 348 // This function should be made match better while being efficient at one point.
 349 // Most probably with a row of regular expressions.
 350 extern "C" {
 351 static void
 352 au_check_word( GtkTextIter *s, GtkTextIter *e )
 353 {
 354     static const char *const URIPrefixes[] =
 355     {
 356         "http://",
 357         "ftp://",
 358         "www.",
 359         "ftp.",
 360         "mailto://",
 361         "https://",
 362         "file://",
 363         "nntp://",
 364         "news://",
 365         "telnet://",
 366         "mms://",
 367         "gopher://",
 368         "prospero://",
 369         "wais://",
 370     };
 371
 372     GtkTextIter start = *s, end = *e;
 373     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 374
 375     // Get our special link tag
 376     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 377
 378     // Get rid of punctuation from beginning and end.
 379     // Might want to move this to au_check_range if an improved link checking doesn't
 380     // use some intelligent punctuation checking itself (beware of undesired iter modifications).
 381     if(g_unichar_ispunct( gtk_text_iter_get_char( &start ) ) )
 382         gtk_text_iter_forward_find_char( &start, pred_nonpunct, NULL, e );
 383
 384     gtk_text_iter_backward_find_char( &end, pred_nonpunct_or_slash, NULL, &start );
 385     gtk_text_iter_forward_char(&end);
 386
 387     wxGtkString text(gtk_text_iter_get_text( &start, &end ));
 388     size_t len = strlen(text), prefix_len;
 389     size_t n;
 390
 391     for( n = 0; n < WXSIZEOF(URIPrefixes); ++n )
 392     {
 393         prefix_len = strlen(URIPrefixes[n]);
 394         if((len > prefix_len) && !strncasecmp(text, URIPrefixes[n], prefix_len))
 395             break;
 396     }
 397
 398     if(n < WXSIZEOF(URIPrefixes))
 399     {
 400         gulong signal_id = g_signal_handler_find (buffer,
 401                                                   (GSignalMatchType) (G_SIGNAL_MATCH_FUNC),
 402                                                   0, 0, NULL,
 403                                                   (gpointer)au_apply_tag_callback, NULL);
 404
 405         g_signal_handler_block (buffer, signal_id);
 406         gtk_text_buffer_apply_tag(buffer, tag, &start, &end);
 407         g_signal_handler_unblock (buffer, signal_id);
 408     }
 409 }
 410 }
 411
 412 extern "C" {
 413 static void
 414 au_check_range(GtkTextIter *s,
 415                GtkTextIter *range_end)
 416 {
 417     GtkTextIter range_start = *s;
 418     GtkTextIter word_end;
 419     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 420     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 421
 422     gtk_text_buffer_remove_tag(buffer, tag, s, range_end);
 423
 424     if(g_unichar_isspace(gtk_text_iter_get_char(&range_start)))
 425         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 426
 427     while(!gtk_text_iter_equal(&range_start, range_end))
 428     {
 429         word_end = range_start;
 430         gtk_text_iter_forward_find_char(&word_end, pred_whitespace, NULL, range_end);
 431
 432         // Now we should have a word delimited by range_start and word_end, correct link tags
 433         au_check_word(&range_start, &word_end);
 434
 435         range_start = word_end;
 436         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 437     }
 438 }
 439 }
 440
 441 //-----------------------------------------------------------------------------
 442 //  "insert-text" for GtkTextBuffer
 443 //-----------------------------------------------------------------------------
 444
 445 extern "C" {
 446 static void
 447 au_insert_text_callback(GtkTextBuffer * WXUNUSED(buffer),
 448                         GtkTextIter *end,
 449                         gchar *text,
 450                         gint len,
 451                         wxTextCtrl *win)
 452 {
 453     if (!len || !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 454         return;
 455
 456     GtkTextIter start = *end;
 457     gtk_text_iter_backward_chars(&start, g_utf8_strlen(text, len));
 458
 459     GtkTextIter line_start = start;
 460     GtkTextIter line_end = *end;
 461     GtkTextIter words_start = start;
 462     GtkTextIter words_end = *end;
 463
 464     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(&start));
 465     gtk_text_iter_forward_to_line_end(&line_end);
 466     gtk_text_iter_backward_find_char(&words_start, pred_whitespace, NULL, &line_start);
 467     gtk_text_iter_forward_find_char(&words_end, pred_whitespace, NULL, &line_end);
 468
 469     au_check_range(&words_start, &words_end);
 470 }
 471 }
 472
 473 //-----------------------------------------------------------------------------
 474 //  "delete-range" for GtkTextBuffer
 475 //-----------------------------------------------------------------------------
 476
 477 extern "C" {
 478 static void
 479 au_delete_range_callback(GtkTextBuffer * WXUNUSED(buffer),
 480                          GtkTextIter *start,
 481                          GtkTextIter *end,
 482                          wxTextCtrl *win)
 483 {
 484     if( !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 485         return;
 486
 487     GtkTextIter line_start = *start, line_end = *end;
 488
 489     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(start));
 490     gtk_text_iter_forward_to_line_end(&line_end);
 491     gtk_text_iter_backward_find_char(start, pred_whitespace, NULL, &line_start);
 492     gtk_text_iter_forward_find_char(end, pred_whitespace, NULL, &line_end);
 493
 494     au_check_range(start, end);
 495 }
 496 }
 497
 498 //-----------------------------------------------------------------------------
 499 //  "populate_popup" from text control and "unmap" from its poup menu
 500 //-----------------------------------------------------------------------------
 501
 502 extern "C" {
 503 static void
 504 gtk_textctrl_popup_unmap( GtkMenu *WXUNUSED(menu), wxTextCtrl* win )
 505 {
 506     win->GTKEnableFocusOutEvent();
 507 }
 508 }
 509
 510 extern "C" {
 511 static void
 512 gtk_textctrl_populate_popup( GtkEntry *WXUNUSED(entry), GtkMenu *menu, wxTextCtrl *win )
 513 {
 514     win->GTKDisableFocusOutEvent();
 515
 516     g_signal_connect (menu, "unmap", G_CALLBACK (gtk_textctrl_popup_unmap), win );
 517 }
 518 }
 519
 520 //-----------------------------------------------------------------------------
 521 //  "changed"
 522 //-----------------------------------------------------------------------------
 523
 524 extern "C" {
 525 static void
 526 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
 527 {
 528     if ( win->IgnoreTextUpdate() )
 529         return;
 530
 531     if (!win->m_hasVMT) return;
 532
 533     if ( win->MarkDirtyOnChange() )
 534         win->MarkDirty();
 535
 536     win->SendTextUpdatedEvent();
 537 }
 538 }
 539
 540 //-----------------------------------------------------------------------------
 541 //  clipboard events: "copy-clipboard", "cut-clipboard", "paste-clipboard"
 542 //-----------------------------------------------------------------------------
 543
 544 // common part of the event handlers below
 545 static void
 546 handle_text_clipboard_callback( GtkWidget *widget, wxTextCtrl *win,
 547                                 wxEventType eventType, const gchar * signal_name)
 548 {
 549     wxClipboardTextEvent event( eventType, win->GetId() );
 550     event.SetEventObject( win );
 551     if ( win->HandleWindowEvent( event ) )
 552     {
 553         // don't let the default processing to take place if we did something
 554         // ourselves in the event handler
 555         g_signal_stop_emission_by_name (widget, signal_name);
 556     }
 557 }
 558
 559 extern "C" {
 560 static void
 561 gtk_copy_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 562 {
 563     handle_text_clipboard_callback(
 564         widget, win, wxEVT_COMMAND_TEXT_COPY, "copy-clipboard" );
 565 }
 566
 567 static void
 568 gtk_cut_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 569 {
 570     handle_text_clipboard_callback(
 571         widget, win, wxEVT_COMMAND_TEXT_CUT, "cut-clipboard" );
 572 }
 573
 574 static void
 575 gtk_paste_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 576 {
 577     handle_text_clipboard_callback(
 578         widget, win, wxEVT_COMMAND_TEXT_PASTE, "paste-clipboard" );
 579 }
 580 }
 581
 582 //-----------------------------------------------------------------------------
 583 //  wxTextCtrl
 584 //-----------------------------------------------------------------------------
 585
 586 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 587     EVT_CHAR(wxTextCtrl::OnChar)
 588
 589     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 590     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 591     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 592     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 593     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 594
 595     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 596     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 597     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 598     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 599     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 600
 601     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 602     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 603     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 604     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 605     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 606     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 607     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 608     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 609     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 610 END_EVENT_TABLE()
 611
 612 void wxTextCtrl::Init()
 613 {
 614     m_dontMarkDirty =
 615     m_modified = false;
 616
 617     m_countUpdatesToIgnore = 0;
 618
 619     SetUpdateFont(false);
 620
 621     m_text = NULL;
 622     m_showPositionOnThaw = NULL;
 623 }
 624
 625 wxTextCtrl::~wxTextCtrl()
 626 {
 627 }
 628
 629 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 630                         wxWindowID id,
 631                         const wxString &value,
 632                         const wxPoint &pos,
 633                         const wxSize &size,
 634                         long style,
 635                         const wxValidator& validator,
 636                         const wxString &name )
 637 {
 638     Init();
 639
 640     Create( parent, id, value, pos, size, style, validator, name );
 641 }
 642
 643 bool wxTextCtrl::Create( wxWindow *parent,
 644                          wxWindowID id,
 645                          const wxString &value,
 646                          const wxPoint &pos,
 647                          const wxSize &size,
 648                          long style,
 649                          const wxValidator& validator,
 650                          const wxString &name )
 651 {
 652     if (!PreCreation( parent, pos, size ) ||
 653         !CreateBase( parent, id, pos, size, style, validator, name ))
 654     {
 655         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 656         return false;
 657     }
 658
 659     bool multi_line = (style & wxTE_MULTILINE) != 0;
 660
 661     if (multi_line)
 662     {
 663         // Create view
 664         m_text = gtk_text_view_new();
 665
 666         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 667
 668         // create "ShowPosition" marker
 669         GtkTextIter iter;
 670         gtk_text_buffer_get_start_iter(m_buffer, &iter);
 671         gtk_text_buffer_create_mark(m_buffer, "ShowPosition", &iter, true);
 672
 673         // create scrolled window
 674         m_widget = gtk_scrolled_window_new( NULL, NULL );
 675         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 676                                         GTK_POLICY_AUTOMATIC,
 677                                         style & wxTE_NO_VSCROLL
 678                                             ? GTK_POLICY_NEVER
 679                                             : GTK_POLICY_AUTOMATIC );
 680         // for ScrollLines/Pages
 681         m_scrollBar[1] = (GtkRange*)((GtkScrolledWindow*)m_widget)->vscrollbar;
 682
 683         // Insert view into scrolled window
 684         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 685
 686         GTKSetWrapMode();
 687
 688         GTKScrolledWindowSetBorder(m_widget, style);
 689
 690         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 691
 692         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 693     }
 694     else
 695     {
 696         // a single-line text control: no need for scrollbars
 697         m_widget =
 698         m_text = gtk_entry_new();
 699         // work around probable bug in GTK+ 2.18 when calling WriteText on a
 700         // new, empty control, see http://trac.wxwidgets.org/ticket/11409
 701         gtk_entry_get_text((GtkEntry*)m_text);
 702
 703         if (style & wxNO_BORDER)
 704             g_object_set (m_text, "has-frame", FALSE, NULL);
 705
 706     }
 707     g_object_ref(m_widget);
 708
 709     m_parent->DoAddChild( this );
 710
 711     m_focusWidget = m_text;
 712
 713     PostCreation(size);
 714
 715     if (multi_line)
 716     {
 717         gtk_widget_show(m_text);
 718     }
 719
 720     // We want to be notified about text changes.
 721     if (multi_line)
 722     {
 723         g_signal_connect (m_buffer, "changed",
 724                           G_CALLBACK (gtk_text_changed_callback), this);
 725     }
 726     else
 727     {
 728         g_signal_connect (m_text, "changed",
 729                           G_CALLBACK (gtk_text_changed_callback), this);
 730     }
 731
 732     // Catch to disable focus out handling
 733     g_signal_connect (m_text, "populate_popup",
 734                       G_CALLBACK (gtk_textctrl_populate_popup),
 735                       this);
 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
 759             // We create our wxUrl tag here for slight efficiency gain - we
 760             // don't have to check for the tag existance in callbacks,
 761             // hereby it's guaranteed to exist.
 762             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 763                                        "foreground", "blue",
 764                                        "underline", PANGO_UNDERLINE_SINGLE,
 765                                        NULL);
 766
 767             // Check for URLs after each text change
 768             g_signal_connect_after (m_buffer, "insert_text",
 769                                     G_CALLBACK (au_insert_text_callback), this);
 770             g_signal_connect_after (m_buffer, "delete_range",
 771                                     G_CALLBACK (au_delete_range_callback), this);
 772
 773             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 774             // block this callback temporarily. This takes care of gtk+ internal
 775             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 776             // which is undesired because only a part of the URL might be copied.
 777             // The insert-text signal emitted inside it will take care of newly formed
 778             // or wholly copied URLs.
 779             g_signal_connect (m_buffer, "apply_tag",
 780                               G_CALLBACK (au_apply_tag_callback), NULL);
 781
 782             // Check for URLs in the initial string passed to Create
 783             gtk_text_buffer_get_start_iter(m_buffer, &start);
 784             gtk_text_buffer_get_end_iter(m_buffer, &end);
 785             au_check_range(&start, &end);
 786         }
 787     }
 788     else // single line
 789     {
 790         // do the right thing with Enter presses depending on whether we have
 791         // wxTE_PROCESS_ENTER or not
 792         GTKSetActivatesDefault();
 793     }
 794
 795
 796     g_signal_connect (m_text, "copy-clipboard",
 797                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 798     g_signal_connect (m_text, "cut-clipboard",
 799                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 800     g_signal_connect (m_text, "paste-clipboard",
 801                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 802
 803     m_cursor = wxCursor( wxCURSOR_IBEAM );
 804
 805     return true;
 806 }
 807
 808 GtkEditable *wxTextCtrl::GetEditable() const
 809 {
 810     wxCHECK_MSG( IsSingleLine(), NULL, "shouldn't be called for multiline" );
 811
 812     return GTK_EDITABLE(m_text);
 813 }
 814
 815 GtkEntry *wxTextCtrl::GetEntry() const
 816 {
 817     return GTK_ENTRY(m_text);
 818 }
 819
 820 // ----------------------------------------------------------------------------
 821 // flags handling
 822 // ----------------------------------------------------------------------------
 823
 824 void wxTextCtrl::GTKSetEditable()
 825 {
 826     gboolean editable = !HasFlag(wxTE_READONLY);
 827     if ( IsSingleLine() )
 828         gtk_editable_set_editable(GTK_EDITABLE(m_text), editable);
 829     else
 830         gtk_text_view_set_editable(GTK_TEXT_VIEW(m_text), editable);
 831 }
 832
 833 void wxTextCtrl::GTKSetVisibility()
 834 {
 835     wxCHECK_RET( IsSingleLine(),
 836                  "wxTE_PASSWORD is for single line text controls only" );
 837
 838     gtk_entry_set_visibility(GTK_ENTRY(m_text), !HasFlag(wxTE_PASSWORD));
 839 }
 840
 841 void wxTextCtrl::GTKSetActivatesDefault()
 842 {
 843     wxCHECK_RET( IsSingleLine(),
 844                  "wxTE_PROCESS_ENTER is for single line text controls only" );
 845
 846     gtk_entry_set_activates_default(GTK_ENTRY(m_text),
 847                                     !HasFlag(wxTE_PROCESS_ENTER));
 848 }
 849
 850 void wxTextCtrl::GTKSetWrapMode()
 851 {
 852     // no wrapping in single line controls
 853     if ( !IsMultiLine() )
 854         return;
 855
 856     // translate wx wrapping style to GTK+
 857     GtkWrapMode wrap;
 858     if ( HasFlag( wxTE_DONTWRAP ) )
 859         wrap = GTK_WRAP_NONE;
 860     else if ( HasFlag( wxTE_CHARWRAP ) )
 861         wrap = GTK_WRAP_CHAR;
 862     else if ( HasFlag( wxTE_WORDWRAP ) )
 863         wrap = GTK_WRAP_WORD;
 864     else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 865         wrap = GTK_WRAP_WORD_CHAR;
 866
 867     gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 868 }
 869
 870 void wxTextCtrl::GTKSetJustification()
 871 {
 872     if ( IsMultiLine() )
 873     {
 874         GtkJustification just;
 875         if ( HasFlag(wxTE_RIGHT) )
 876             just = GTK_JUSTIFY_RIGHT;
 877         else if ( HasFlag(wxTE_CENTRE) )
 878             just = GTK_JUSTIFY_CENTER;
 879         else // wxTE_LEFT == 0
 880             just = GTK_JUSTIFY_LEFT;
 881
 882         gtk_text_view_set_justification(GTK_TEXT_VIEW(m_text), just);
 883     }
 884     else // single line
 885     {
 886         gfloat align;
 887         if ( HasFlag(wxTE_RIGHT) )
 888             align = 1.0;
 889         else if ( HasFlag(wxTE_CENTRE) )
 890             align = 0.5;
 891         else // single line
 892             align = 0.0;
 893
 894         gtk_entry_set_alignment(GTK_ENTRY(m_text), align);
 895     }
 896 }
 897
 898 void wxTextCtrl::SetWindowStyleFlag(long style)
 899 {
 900     long styleOld = GetWindowStyleFlag();
 901
 902     wxTextCtrlBase::SetWindowStyleFlag(style);
 903
 904     if ( (style & wxTE_READONLY) != (styleOld & wxTE_READONLY) )
 905         GTKSetEditable();
 906
 907     if ( (style & wxTE_PASSWORD) != (styleOld & wxTE_PASSWORD) )
 908         GTKSetVisibility();
 909
 910     if ( (style & wxTE_PROCESS_ENTER) != (styleOld & wxTE_PROCESS_ENTER) )
 911         GTKSetActivatesDefault();
 912
 913     static const long flagsWrap = wxTE_WORDWRAP | wxTE_CHARWRAP | wxTE_DONTWRAP;
 914     if ( (style & flagsWrap) != (styleOld & flagsWrap) )
 915         GTKSetWrapMode();
 916
 917     static const long flagsAlign = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 918     if ( (style & flagsAlign) != (styleOld & flagsAlign) )
 919         GTKSetJustification();
 920 }
 921
 922 // ----------------------------------------------------------------------------
 923 // control value
 924 // ----------------------------------------------------------------------------
 925
 926 wxString wxTextCtrl::GetValue() const
 927 {
 928     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 929
 930     if ( IsMultiLine() )
 931     {
 932         GtkTextIter start;
 933         gtk_text_buffer_get_start_iter( m_buffer, &start );
 934         GtkTextIter end;
 935         gtk_text_buffer_get_end_iter( m_buffer, &end );
 936         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 937
 938         return wxGTK_CONV_BACK(text);
 939     }
 940     else // single line
 941     {
 942         return wxTextEntry::GetValue();
 943     }
 944 }
 945
 946 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 947 {
 948     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 949     // encoding?
 950
 951     // first check the default text style (we intentionally don't check the
 952     // style for the current position as it doesn't make sense for SetValue())
 953     const wxTextAttr& style = GetDefaultStyle();
 954     wxFontEncoding enc = style.HasFontEncoding() ? style.GetFontEncoding()
 955                                          : wxFONTENCODING_SYSTEM;
 956
 957     // fall back to the controls font if no style
 958     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 959         enc = GetFont().GetEncoding();
 960
 961     return enc;
 962 }
 963
 964 bool wxTextCtrl::IsEmpty() const
 965 {
 966     if ( IsMultiLine() )
 967         return gtk_text_buffer_get_char_count(m_buffer) == 0;
 968
 969     return wxTextEntry::IsEmpty();
 970 }
 971
 972 void wxTextCtrl::DoSetValue( const wxString &value, int flags )
 973 {
 974     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 975
 976     m_modified = false;
 977
 978     if ( !IsMultiLine() )
 979     {
 980         wxTextEntry::DoSetValue(value, flags);
 981         return;
 982     }
 983
 984     if (value.IsEmpty())
 985     {
 986         if ( !(flags & SetValue_SendEvent) )
 987             EnableTextChangedEvents(false);
 988
 989         gtk_text_buffer_set_text( m_buffer, "", 0 );
 990
 991         if ( !(flags & SetValue_SendEvent) )
 992             EnableTextChangedEvents(true);
 993
 994         return;
 995     }
 996
 997 #if wxUSE_UNICODE
 998     const wxCharBuffer buffer(value.utf8_str());
 999 #else
1000     wxFontEncoding enc = m_defaultStyle.HasFont()
1001                             ? m_defaultStyle.GetFont().GetEncoding()
1002                             : wxFONTENCODING_SYSTEM;
1003     if ( enc == wxFONTENCODING_SYSTEM )
1004         enc = GetTextEncoding();
1005
1006     const wxCharBuffer buffer(wxGTK_CONV_ENC(value, enc));
1007     if ( !buffer )
1008     {
1009         // see comment in WriteText() as to why we must warn the user about
1010         // this
1011         wxLogWarning(_("Failed to set text in the text control."));
1012         return;
1013     }
1014 #endif
1015
1016     if ( !(flags & SetValue_SendEvent) )
1017     {
1018         EnableTextChangedEvents(false);
1019     }
1020
1021     gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
1022
1023     if ( !m_defaultStyle.IsDefault() )
1024     {
1025         GtkTextIter start, end;
1026         gtk_text_buffer_get_bounds( m_buffer, &start, &end );
1027         wxGtkTextApplyTagsFromAttr(m_widget, m_buffer, m_defaultStyle,
1028                                    &start, &end);
1029     }
1030
1031     if ( !(flags & SetValue_SendEvent) )
1032     {
1033         EnableTextChangedEvents(true);
1034     }
1035 }
1036
1037 void wxTextCtrl::WriteText( const wxString &text )
1038 {
1039     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1040
1041     // we're changing the text programmatically
1042     DontMarkDirtyOnNextChange();
1043
1044     if ( !IsMultiLine() )
1045     {
1046         wxTextEntry::WriteText(text);
1047         return;
1048     }
1049
1050 #if wxUSE_UNICODE
1051     const wxCharBuffer buffer(text.utf8_str());
1052 #else
1053     // check if we have a specific style for the current position
1054     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
1055     wxTextAttr style;
1056     if ( GetStyle(GetInsertionPoint(), style) && style.HasFontEncoding() )
1057     {
1058         enc = style.GetFontEncoding();
1059     }
1060
1061     if ( enc == wxFONTENCODING_SYSTEM )
1062         enc = GetTextEncoding();
1063
1064     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
1065     if ( !buffer )
1066     {
1067         // we must log an error here as losing the text like this can be a
1068         // serious problem (e.g. imagine the document edited by user being
1069         // empty instead of containing the correct text)
1070         wxLogWarning(_("Failed to insert text in the control."));
1071         return;
1072     }
1073 #endif
1074
1075     // First remove the selection if there is one
1076     // TODO:  Is there an easier GTK specific way to do this?
1077     long from, to;
1078     GetSelection(&from, &to);
1079     if (from != to)
1080         Remove(from, to);
1081
1082     // Insert the text
1083     wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
1084
1085     GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
1086     // Scroll to cursor, but only if scrollbar thumb is at the very bottom
1087     // won't work when frozen, text view is not using m_buffer then
1088     if (!IsFrozen() && wxIsSameDouble(adj->value, adj->upper - adj->page_size))
1089     {
1090         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
1091                 gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
1092     }
1093 }
1094
1095 wxString wxTextCtrl::GetLineText( long lineNo ) const
1096 {
1097     wxString result;
1098     if ( IsMultiLine() )
1099     {
1100         GtkTextIter line;
1101         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
1102
1103         GtkTextIter end = line;
1104         // avoid skipping to the next line end if this one is empty
1105         if ( !gtk_text_iter_ends_line(&line) )
1106             gtk_text_iter_forward_to_line_end(&end);
1107
1108         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
1109         result = wxGTK_CONV_BACK(text);
1110     }
1111     else
1112     {
1113         if (lineNo == 0)
1114             result = GetValue();
1115     }
1116     return result;
1117 }
1118
1119 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
1120 {
1121   /* If you implement this, don't forget to update the documentation!
1122    * (file docs/latex/wx/text.tex) */
1123     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
1124 }
1125
1126 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
1127 {
1128     if ( IsMultiLine() )
1129     {
1130         GtkTextIter iter;
1131
1132         if (pos > GetLastPosition())
1133             return false;
1134
1135         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
1136
1137         if ( y )
1138             *y = gtk_text_iter_get_line(&iter);
1139         if ( x )
1140             *x = gtk_text_iter_get_line_offset(&iter);
1141     }
1142     else // single line control
1143     {
1144         if ( pos <= GTK_ENTRY(m_text)->text_length )
1145         {
1146             if ( y )
1147                 *y = 0;
1148             if ( x )
1149                 *x = pos;
1150         }
1151         else
1152         {
1153             // index out of bounds
1154             return false;
1155         }
1156     }
1157
1158     return true;
1159 }
1160
1161 long wxTextCtrl::XYToPosition(long x, long y ) const
1162 {
1163     if ( IsSingleLine() )
1164         return 0;
1165
1166     GtkTextIter iter;
1167     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1168         return -1;
1169
1170     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1171     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1172         return -1;
1173
1174     return gtk_text_iter_get_offset(&iter) + x;
1175 }
1176
1177 int wxTextCtrl::GetLineLength(long lineNo) const
1178 {
1179     if ( IsMultiLine() )
1180     {
1181         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1182         if (lineNo > last_line)
1183             return -1;
1184
1185         GtkTextIter iter;
1186         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1187         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1188         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1189     }
1190     else
1191     {
1192         wxString str = GetLineText (lineNo);
1193         return (int) str.length();
1194     }
1195 }
1196
1197 int wxTextCtrl::GetNumberOfLines() const
1198 {
1199     if ( IsMultiLine() )
1200     {
1201         return gtk_text_buffer_get_line_count( m_buffer );
1202     }
1203     else // single line
1204     {
1205         return 1;
1206     }
1207 }
1208
1209 void wxTextCtrl::SetInsertionPoint( long pos )
1210 {
1211     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1212
1213     if ( IsMultiLine() )
1214     {
1215         GtkTextIter iter;
1216         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1217         gtk_text_buffer_place_cursor( m_buffer, &iter );
1218         GtkTextMark* mark = gtk_text_buffer_get_insert(m_buffer);
1219         if (IsFrozen())
1220             // defer until Thaw, text view is not using m_buffer now
1221             m_showPositionOnThaw = mark;
1222         else
1223             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1224     }
1225     else // single line
1226     {
1227         wxTextEntry::SetInsertionPoint(pos);
1228     }
1229 }
1230
1231 void wxTextCtrl::SetEditable( bool editable )
1232 {
1233     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1234
1235     if ( IsMultiLine() )
1236     {
1237         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1238     }
1239     else // single line
1240     {
1241         wxTextEntry::SetEditable(editable);
1242     }
1243 }
1244
1245 bool wxTextCtrl::Enable( bool enable )
1246 {
1247     if (!wxWindowBase::Enable(enable))
1248     {
1249         // nothing to do
1250         return false;
1251     }
1252
1253     gtk_widget_set_sensitive( m_text, enable );
1254     SetCursor(enable ? wxCursor(wxCURSOR_IBEAM) : wxCursor());
1255
1256     return true;
1257 }
1258
1259 // wxGTK-specific: called recursively by Enable,
1260 // to give widgets an opportunity to correct their colours after they
1261 // have been changed by Enable
1262 void wxTextCtrl::OnEnabled(bool WXUNUSED(enable))
1263 {
1264     // If we have a custom background colour, we use this colour in both
1265     // disabled and enabled mode, or we end up with a different colour under the
1266     // text.
1267     wxColour oldColour = GetBackgroundColour();
1268     if (oldColour.Ok())
1269     {
1270         // Need to set twice or it'll optimize the useful stuff out
1271         if (oldColour == * wxWHITE)
1272             SetBackgroundColour(*wxBLACK);
1273         else
1274             SetBackgroundColour(*wxWHITE);
1275         SetBackgroundColour(oldColour);
1276     }
1277 }
1278
1279 void wxTextCtrl::MarkDirty()
1280 {
1281     m_modified = true;
1282 }
1283
1284 void wxTextCtrl::DiscardEdits()
1285 {
1286     m_modified = false;
1287 }
1288
1289 // ----------------------------------------------------------------------------
1290 // event handling
1291 // ----------------------------------------------------------------------------
1292
1293 void wxTextCtrl::EnableTextChangedEvents(bool enable)
1294 {
1295     if ( enable )
1296     {
1297         g_signal_handlers_unblock_by_func(GetTextObject(),
1298             (gpointer)gtk_text_changed_callback, this);
1299     }
1300     else // disable events
1301     {
1302         g_signal_handlers_block_by_func(GetTextObject(),
1303             (gpointer)gtk_text_changed_callback, this);
1304     }
1305 }
1306
1307 bool wxTextCtrl::IgnoreTextUpdate()
1308 {
1309     if ( m_countUpdatesToIgnore > 0 )
1310     {
1311         m_countUpdatesToIgnore--;
1312
1313         return true;
1314     }
1315
1316     return false;
1317 }
1318
1319 bool wxTextCtrl::MarkDirtyOnChange()
1320 {
1321     if ( m_dontMarkDirty )
1322     {
1323         m_dontMarkDirty = false;
1324
1325         return false;
1326     }
1327
1328     return true;
1329 }
1330
1331 void wxTextCtrl::SetSelection( long from, long to )
1332 {
1333     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1334
1335     if ( IsMultiLine() )
1336     {
1337         if (from == -1 && to == -1)
1338         {
1339             from = 0;
1340             to = GetValue().length();
1341         }
1342
1343         GtkTextIter fromi, toi;
1344         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1345         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1346
1347         gtk_text_buffer_select_range( m_buffer, &fromi, &toi );
1348     }
1349     else // single line
1350     {
1351         wxTextEntry::SetSelection(from, to);
1352     }
1353 }
1354
1355 void wxTextCtrl::ShowPosition( long pos )
1356 {
1357     if (IsMultiLine())
1358     {
1359         GtkTextIter iter;
1360         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, int(pos));
1361         GtkTextMark* mark = gtk_text_buffer_get_mark(m_buffer, "ShowPosition");
1362         gtk_text_buffer_move_mark(m_buffer, mark, &iter);
1363         if (IsFrozen())
1364             // defer until Thaw, text view is not using m_buffer now
1365             m_showPositionOnThaw = mark;
1366         else
1367             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1368     }
1369 }
1370
1371 wxTextCtrlHitTestResult
1372 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1373 {
1374     if ( !IsMultiLine() )
1375     {
1376         // not supported
1377         return wxTE_HT_UNKNOWN;
1378     }
1379
1380     int x, y;
1381     gtk_text_view_window_to_buffer_coords
1382     (
1383         GTK_TEXT_VIEW(m_text),
1384         GTK_TEXT_WINDOW_TEXT,
1385         pt.x, pt.y,
1386         &x, &y
1387     );
1388
1389     GtkTextIter iter;
1390     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1391     if ( pos )
1392         *pos = gtk_text_iter_get_offset(&iter);
1393
1394     return wxTE_HT_ON_TEXT;
1395 }
1396
1397 long wxTextCtrl::GetInsertionPoint() const
1398 {
1399     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1400
1401     if ( IsMultiLine() )
1402     {
1403         // There is no direct accessor for the cursor, but
1404         // internally, the cursor is the "mark" called
1405         // "insert" in the text view's btree structure.
1406
1407         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1408         GtkTextIter cursor;
1409         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1410
1411         return gtk_text_iter_get_offset( &cursor );
1412     }
1413     else
1414     {
1415         return wxTextEntry::GetInsertionPoint();
1416     }
1417 }
1418
1419 wxTextPos wxTextCtrl::GetLastPosition() const
1420 {
1421     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1422
1423     int pos = 0;
1424
1425     if ( IsMultiLine() )
1426     {
1427         GtkTextIter end;
1428         gtk_text_buffer_get_end_iter( m_buffer, &end );
1429
1430         pos = gtk_text_iter_get_offset( &end );
1431     }
1432     else // single line
1433     {
1434         pos = wxTextEntry::GetLastPosition();
1435     }
1436
1437     return (long)pos;
1438 }
1439
1440 void wxTextCtrl::Remove( long from, long to )
1441 {
1442     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1443
1444     if ( IsMultiLine() )
1445     {
1446         GtkTextIter fromi, toi;
1447         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1448         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1449
1450         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1451     }
1452     else // single line
1453     {
1454         wxTextEntry::Remove(from, to);
1455     }
1456 }
1457
1458 void wxTextCtrl::Cut()
1459 {
1460     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1461
1462     if ( IsMultiLine() )
1463         g_signal_emit_by_name (m_text, "cut-clipboard");
1464     else
1465         wxTextEntry::Cut();
1466 }
1467
1468 void wxTextCtrl::Copy()
1469 {
1470     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1471
1472     if ( IsMultiLine() )
1473         g_signal_emit_by_name (m_text, "copy-clipboard");
1474     else
1475         wxTextEntry::Copy();
1476 }
1477
1478 void wxTextCtrl::Paste()
1479 {
1480     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1481
1482     if ( IsMultiLine() )
1483         g_signal_emit_by_name (m_text, "paste-clipboard");
1484     else
1485         wxTextEntry::Paste();
1486 }
1487
1488 // If the return values from and to are the same, there is no
1489 // selection.
1490 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1491 {
1492     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1493
1494     if ( !IsMultiLine() )
1495     {
1496         wxTextEntry::GetSelection(fromOut, toOut);
1497         return;
1498     }
1499
1500     gint from, to;
1501
1502     GtkTextIter ifrom, ito;
1503     if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1504     {
1505         from = gtk_text_iter_get_offset(&ifrom);
1506         to = gtk_text_iter_get_offset(&ito);
1507
1508         if ( from > to )
1509         {
1510             // exchange them to be compatible with wxMSW
1511             gint tmp = from;
1512             from = to;
1513             to = tmp;
1514         }
1515     }
1516     else // no selection
1517     {
1518         from =
1519         to = GetInsertionPoint();
1520     }
1521
1522     if ( fromOut )
1523         *fromOut = from;
1524     if ( toOut )
1525         *toOut = to;
1526 }
1527
1528
1529 bool wxTextCtrl::IsEditable() const
1530 {
1531     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1532
1533     if ( IsMultiLine() )
1534     {
1535         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1536     }
1537     else
1538     {
1539         return wxTextEntry::IsEditable();
1540     }
1541 }
1542
1543 bool wxTextCtrl::IsModified() const
1544 {
1545     return m_modified;
1546 }
1547
1548 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1549 {
1550     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1551
1552     if ( key_event.GetKeyCode() == WXK_RETURN )
1553     {
1554         if ( HasFlag(wxTE_PROCESS_ENTER) )
1555         {
1556             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1557             event.SetEventObject(this);
1558             event.SetString(GetValue());
1559             if ( HandleWindowEvent(event) )
1560                 return;
1561         }
1562     }
1563
1564     key_event.Skip();
1565 }
1566
1567 GtkWidget* wxTextCtrl::GetConnectWidget()
1568 {
1569     return GTK_WIDGET(m_text);
1570 }
1571
1572 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1573 {
1574     if ( IsMultiLine() )
1575     {
1576         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1577                                         GTK_TEXT_WINDOW_TEXT );
1578     }
1579     else
1580     {
1581         return GTK_ENTRY(m_text)->text_area;
1582     }
1583 }
1584
1585 // the font will change for subsequent text insertiongs
1586 bool wxTextCtrl::SetFont( const wxFont &font )
1587 {
1588     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1589
1590     if ( !wxTextCtrlBase::SetFont(font) )
1591     {
1592         // font didn't change, nothing to do
1593         return false;
1594     }
1595
1596     if ( IsMultiLine() )
1597     {
1598         SetUpdateFont(true);
1599
1600         m_defaultStyle.SetFont(font);
1601
1602         ChangeFontGlobally();
1603     }
1604
1605     return true;
1606 }
1607
1608 void wxTextCtrl::ChangeFontGlobally()
1609 {
1610     // this method is very inefficient and hence should be called as rarely as
1611     // possible!
1612     //
1613     // TODO: it can be implemented much more efficiently for GTK2
1614     wxASSERT_MSG( IsMultiLine(),
1615                   wxT("shouldn't be called for single line controls") );
1616
1617     wxString value = GetValue();
1618     if ( !value.empty() )
1619     {
1620         SetUpdateFont(false);
1621
1622         Clear();
1623         AppendText(value);
1624     }
1625 }
1626
1627 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1628 {
1629     if ( !wxControl::SetForegroundColour(colour) )
1630         return false;
1631
1632     // update default fg colour too
1633     m_defaultStyle.SetTextColour(colour);
1634
1635     return true;
1636 }
1637
1638 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1639 {
1640     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1641
1642     if ( !wxControl::SetBackgroundColour( colour ) )
1643         return false;
1644
1645     if (!m_backgroundColour.Ok())
1646         return false;
1647
1648     // change active background color too
1649     m_defaultStyle.SetBackgroundColour( colour );
1650
1651     return true;
1652 }
1653
1654 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1655 {
1656     if ( IsMultiLine() )
1657     {
1658         if ( style.IsDefault() )
1659         {
1660             // nothing to do
1661             return true;
1662         }
1663
1664         gint l = gtk_text_buffer_get_char_count( m_buffer );
1665
1666         wxCHECK_MSG( start >= 0 && end <= l, false,
1667                      wxT("invalid range in wxTextCtrl::SetStyle") );
1668
1669         GtkTextIter starti, endi;
1670         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1671         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1672
1673         wxGtkTextApplyTagsFromAttr( m_widget, m_buffer, style, &starti, &endi );
1674
1675         return true;
1676     }
1677     //else: single line text controls don't support styles
1678
1679     return false;
1680 }
1681
1682 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
1683 {
1684     if ( !IsMultiLine() )
1685     {
1686         // no styles for GtkEntry
1687         return false;
1688     }
1689
1690     gint l = gtk_text_buffer_get_char_count( m_buffer );
1691
1692     wxCHECK_MSG( position >= 0 && position <= l, false,
1693                  wxT("invalid range in wxTextCtrl::GetStyle") );
1694
1695     GtkTextIter positioni;
1696     gtk_text_buffer_get_iter_at_offset(m_buffer, &positioni, position);
1697
1698     // Obtain a copy of the default attributes
1699     GtkTextAttributes * const
1700         pattr = gtk_text_view_get_default_attributes(GTK_TEXT_VIEW(m_text));
1701     wxON_BLOCK_EXIT1( g_free, pattr );
1702
1703     // And query GTK for the attributes at the given position using it as base
1704     if ( !gtk_text_iter_get_attributes(&positioni, pattr) )
1705     {
1706         style = m_defaultStyle;
1707     }
1708     else // have custom attributes
1709     {
1710         style.SetBackgroundColour(pattr->appearance.bg_color);
1711         style.SetTextColour(pattr->appearance.fg_color);
1712
1713         const wxGtkString
1714             pangoFontString(pango_font_description_to_string(pattr->font));
1715
1716         wxFont font;
1717         if ( font.SetNativeFontInfo(wxString(pangoFontString)) )
1718             style.SetFont(font);
1719
1720         // TODO: set alignment, tabs and indents
1721     }
1722
1723     return true;
1724 }
1725
1726 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1727 {
1728     gtk_widget_modify_style(m_text, style);
1729 }
1730
1731 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1732 {
1733     Cut();
1734 }
1735
1736 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1737 {
1738     Copy();
1739 }
1740
1741 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1742 {
1743     Paste();
1744 }
1745
1746 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1747 {
1748     Undo();
1749 }
1750
1751 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1752 {
1753     Redo();
1754 }
1755
1756 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1757 {
1758     event.Enable( CanCut() );
1759 }
1760
1761 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1762 {
1763     event.Enable( CanCopy() );
1764 }
1765
1766 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1767 {
1768     event.Enable( CanPaste() );
1769 }
1770
1771 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1772 {
1773     event.Enable( CanUndo() );
1774 }
1775
1776 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1777 {
1778     event.Enable( CanRedo() );
1779 }
1780
1781 wxSize wxTextCtrl::DoGetBestSize() const
1782 {
1783     // FIXME should be different for multi-line controls...
1784     wxSize ret( wxControl::DoGetBestSize() );
1785     wxSize best(80, ret.y);
1786     CacheBestSize(best);
1787     return best;
1788 }
1789
1790 // ----------------------------------------------------------------------------
1791 // freeze/thaw
1792 // ----------------------------------------------------------------------------
1793
1794 void wxTextCtrl::DoFreeze()
1795 {
1796     wxCHECK_RET(m_text != NULL, wxT("invalid text ctrl"));
1797
1798     wxWindow::DoFreeze();
1799
1800     if ( HasFlag(wxTE_MULTILINE) )
1801     {
1802         GTKFreezeWidget(m_text);
1803
1804         // removing buffer dramatically speeds up insertion:
1805         g_object_ref(m_buffer);
1806         GtkTextBuffer* buf_new = gtk_text_buffer_new(NULL);
1807         GtkTextMark* mark = GTK_TEXT_VIEW(m_text)->first_para_mark;
1808         gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), buf_new);
1809         // gtk_text_view_set_buffer adds its own reference
1810         g_object_unref(buf_new);
1811         // This mark should be deleted when the buffer is changed,
1812         // but it's not (in GTK+ up to at least 2.10.6).
1813         // Otherwise these anonymous marks start to build up in the buffer,
1814         // and Freeze takes longer and longer each time it is called.
1815         if (GTK_IS_TEXT_MARK(mark) && !gtk_text_mark_get_deleted(mark))
1816             gtk_text_buffer_delete_mark(m_buffer, mark);
1817     }
1818 }
1819
1820 void wxTextCtrl::DoThaw()
1821 {
1822     if ( HasFlag(wxTE_MULTILINE) )
1823     {
1824         // reattach buffer:
1825         gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1826         g_object_unref(m_buffer);
1827
1828         if (m_showPositionOnThaw != NULL)
1829         {
1830             gtk_text_view_scroll_mark_onscreen(
1831                 GTK_TEXT_VIEW(m_text), m_showPositionOnThaw);
1832             m_showPositionOnThaw = NULL;
1833         }
1834
1835         // and thaw the window
1836         GTKThawWidget(m_text);
1837     }
1838
1839     wxWindow::DoThaw();
1840 }
1841
1842 // ----------------------------------------------------------------------------
1843 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1844 // ----------------------------------------------------------------------------
1845
1846 // FIXME: when dragging on a link the sample gets an "Unknown event".
1847 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1848 // a buggy sample, or something else
1849 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1850 {
1851     event.Skip();
1852     if( !HasFlag(wxTE_AUTO_URL) )
1853         return;
1854
1855     gint x, y;
1856     GtkTextIter start, end;
1857     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1858                                                 "wxUrl");
1859
1860     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1861                                           event.GetX(), event.GetY(), &x, &y);
1862
1863     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1864     if (!gtk_text_iter_has_tag(&end, tag))
1865     {
1866         SetCursor(wxCursor(wxCURSOR_IBEAM));
1867         return;
1868     }
1869
1870     SetCursor(wxCursor(wxCURSOR_HAND));
1871
1872     start = end;
1873     if(!gtk_text_iter_begins_tag(&start, tag))
1874         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1875     if(!gtk_text_iter_ends_tag(&end, tag))
1876         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1877
1878     // Native context menu is probably not desired on an URL.
1879     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1880     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1881         event.Skip(false);
1882
1883     wxTextUrlEvent url_event(m_windowId, event,
1884                              gtk_text_iter_get_offset(&start),
1885                              gtk_text_iter_get_offset(&end));
1886
1887     InitCommandEvent(url_event);
1888     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1889     //event.Skip(!HandleWindowEvent(url_event));
1890     HandleWindowEvent(url_event);
1891 }
1892
1893 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
1894 {
1895     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
1896
1897     // GtkTextView starts a drag operation when left mouse button is pressed
1898     // and ends it when it is released and if it doesn't get the release event
1899     // the next click on a control results in an assertion failure inside
1900     // gtk_text_view_start_selection_drag() which simply *kills* the program
1901     // without anything we can do about it, so always let GTK+ have this event
1902     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
1903 }
1904
1905 // static
1906 wxVisualAttributes
1907 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1908 {
1909     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1910 }
1911
1912 #endif // wxUSE_TEXTCTRL