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 *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 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 587
 588 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 589     EVT_CHAR(wxTextCtrl::OnChar)
 590
 591     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 592     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 593     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 594     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 595     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 596
 597     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 598     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 599     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 600     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 601     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 602
 603     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 604     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 605     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 606     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 607     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 608     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 609     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 610     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 611     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 612 END_EVENT_TABLE()
 613
 614 void wxTextCtrl::Init()
 615 {
 616     m_dontMarkDirty =
 617     m_modified = false;
 618
 619     m_countUpdatesToIgnore = 0;
 620
 621     SetUpdateFont(false);
 622
 623     m_text = NULL;
 624     m_showPositionOnThaw = NULL;
 625     m_gdkHandCursor = NULL;
 626     m_gdkXTermCursor = NULL;
 627 }
 628
 629 wxTextCtrl::~wxTextCtrl()
 630 {
 631     if(m_gdkHandCursor)
 632         gdk_cursor_unref(m_gdkHandCursor);
 633     if(m_gdkXTermCursor)
 634         gdk_cursor_unref(m_gdkXTermCursor);
 635 }
 636
 637 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 638                         wxWindowID id,
 639                         const wxString &value,
 640                         const wxPoint &pos,
 641                         const wxSize &size,
 642                         long style,
 643                         const wxValidator& validator,
 644                         const wxString &name )
 645 {
 646     Init();
 647
 648     Create( parent, id, value, pos, size, style, validator, name );
 649 }
 650
 651 bool wxTextCtrl::Create( wxWindow *parent,
 652                          wxWindowID id,
 653                          const wxString &value,
 654                          const wxPoint &pos,
 655                          const wxSize &size,
 656                          long style,
 657                          const wxValidator& validator,
 658                          const wxString &name )
 659 {
 660     if (!PreCreation( parent, pos, size ) ||
 661         !CreateBase( parent, id, pos, size, style, validator, name ))
 662     {
 663         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 664         return false;
 665     }
 666
 667     bool multi_line = (style & wxTE_MULTILINE) != 0;
 668
 669     if (multi_line)
 670     {
 671         // Create view
 672         m_text = gtk_text_view_new();
 673
 674         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 675
 676         // create "ShowPosition" marker
 677         GtkTextIter iter;
 678         gtk_text_buffer_get_start_iter(m_buffer, &iter);
 679         gtk_text_buffer_create_mark(m_buffer, "ShowPosition", &iter, true);
 680
 681         // create scrolled window
 682         m_widget = gtk_scrolled_window_new( NULL, NULL );
 683         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 684                                         GTK_POLICY_AUTOMATIC,
 685                                         style & wxTE_NO_VSCROLL
 686                                             ? GTK_POLICY_NEVER
 687                                             : GTK_POLICY_AUTOMATIC );
 688         // for ScrollLines/Pages
 689         m_scrollBar[1] = (GtkRange*)((GtkScrolledWindow*)m_widget)->vscrollbar;
 690
 691         // Insert view into scrolled window
 692         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 693
 694         GTKSetWrapMode();
 695
 696         GTKScrolledWindowSetBorder(m_widget, style);
 697
 698         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 699
 700         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 701     }
 702     else
 703     {
 704         // a single-line text control: no need for scrollbars
 705         m_widget =
 706         m_text = gtk_entry_new();
 707
 708         if (style & wxNO_BORDER)
 709             g_object_set (m_text, "has-frame", FALSE, NULL);
 710
 711     }
 712     g_object_ref(m_widget);
 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     // Catch to disable focus out handling
 738     g_signal_connect (m_text, "populate_popup",
 739                       G_CALLBACK (gtk_textctrl_populate_popup),
 740                       this);
 741
 742     if (!value.empty())
 743     {
 744         SetValue( value );
 745     }
 746
 747     if (style & wxTE_PASSWORD)
 748         GTKSetVisibility();
 749
 750     if (style & wxTE_READONLY)
 751         GTKSetEditable();
 752
 753     // left justification (alignment) is the default anyhow
 754     if ( style & (wxTE_RIGHT | wxTE_CENTRE) )
 755         GTKSetJustification();
 756
 757     if (multi_line)
 758     {
 759         // Handle URLs on multi-line controls with wxTE_AUTO_URL style
 760         if (style & wxTE_AUTO_URL)
 761         {
 762             GtkTextIter start, end;
 763             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 764             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 765
 766             // We create our wxUrl tag here for slight efficiency gain - we
 767             // don't have to check for the tag existance in callbacks,
 768             // hereby it's guaranteed to exist.
 769             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 770                                        "foreground", "blue",
 771                                        "underline", PANGO_UNDERLINE_SINGLE,
 772                                        NULL);
 773
 774             // Check for URLs after each text change
 775             g_signal_connect_after (m_buffer, "insert_text",
 776                                     G_CALLBACK (au_insert_text_callback), this);
 777             g_signal_connect_after (m_buffer, "delete_range",
 778                                     G_CALLBACK (au_delete_range_callback), this);
 779
 780             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 781             // block this callback temporarily. This takes care of gtk+ internal
 782             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 783             // which is undesired because only a part of the URL might be copied.
 784             // The insert-text signal emitted inside it will take care of newly formed
 785             // or wholly copied URLs.
 786             g_signal_connect (m_buffer, "apply_tag",
 787                               G_CALLBACK (au_apply_tag_callback), NULL);
 788
 789             // Check for URLs in the initial string passed to Create
 790             gtk_text_buffer_get_start_iter(m_buffer, &start);
 791             gtk_text_buffer_get_end_iter(m_buffer, &end);
 792             au_check_range(&start, &end);
 793         }
 794     }
 795     else // single line
 796     {
 797         // do the right thing with Enter presses depending on whether we have
 798         // wxTE_PROCESS_ENTER or not
 799         GTKSetActivatesDefault();
 800     }
 801
 802
 803     g_signal_connect (m_text, "copy-clipboard",
 804                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 805     g_signal_connect (m_text, "cut-clipboard",
 806                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 807     g_signal_connect (m_text, "paste-clipboard",
 808                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 809
 810     m_cursor = wxCursor( wxCURSOR_IBEAM );
 811
 812     return true;
 813 }
 814
 815 GtkEditable *wxTextCtrl::GetEditable() const
 816 {
 817     wxCHECK_MSG( IsSingleLine(), NULL, "shouldn't be called for multiline" );
 818
 819     return GTK_EDITABLE(m_text);
 820 }
 821
 822 GtkEntry *wxTextCtrl::GetEntry() const
 823 {
 824     return GTK_ENTRY(m_text);
 825 }
 826
 827 // ----------------------------------------------------------------------------
 828 // flags handling
 829 // ----------------------------------------------------------------------------
 830
 831 void wxTextCtrl::GTKSetEditable()
 832 {
 833     gboolean editable = !HasFlag(wxTE_READONLY);
 834     if ( IsSingleLine() )
 835         gtk_editable_set_editable(GTK_EDITABLE(m_text), editable);
 836     else
 837         gtk_text_view_set_editable(GTK_TEXT_VIEW(m_text), editable);
 838 }
 839
 840 void wxTextCtrl::GTKSetVisibility()
 841 {
 842     wxCHECK_RET( IsSingleLine(),
 843                  "wxTE_PASSWORD is for single line text controls only" );
 844
 845     gtk_entry_set_visibility(GTK_ENTRY(m_text), !HasFlag(wxTE_PASSWORD));
 846 }
 847
 848 void wxTextCtrl::GTKSetActivatesDefault()
 849 {
 850     wxCHECK_RET( IsSingleLine(),
 851                  "wxTE_PROCESS_ENTER is for single line text controls only" );
 852
 853     gtk_entry_set_activates_default(GTK_ENTRY(m_text),
 854                                     !HasFlag(wxTE_PROCESS_ENTER));
 855 }
 856
 857 void wxTextCtrl::GTKSetWrapMode()
 858 {
 859     // no wrapping in single line controls
 860     if ( !IsMultiLine() )
 861         return;
 862
 863     // translate wx wrapping style to GTK+
 864     GtkWrapMode wrap;
 865     if ( HasFlag( wxTE_DONTWRAP ) )
 866         wrap = GTK_WRAP_NONE;
 867     else if ( HasFlag( wxTE_CHARWRAP ) )
 868         wrap = GTK_WRAP_CHAR;
 869     else if ( HasFlag( wxTE_WORDWRAP ) )
 870         wrap = GTK_WRAP_WORD;
 871     else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 872         wrap = GTK_WRAP_WORD_CHAR;
 873
 874     gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 875 }
 876
 877 void wxTextCtrl::GTKSetJustification()
 878 {
 879     if ( IsMultiLine() )
 880     {
 881         GtkJustification just;
 882         if ( HasFlag(wxTE_RIGHT) )
 883             just = GTK_JUSTIFY_RIGHT;
 884         else if ( HasFlag(wxTE_CENTRE) )
 885             just = GTK_JUSTIFY_CENTER;
 886         else // wxTE_LEFT == 0
 887             just = GTK_JUSTIFY_LEFT;
 888
 889         gtk_text_view_set_justification(GTK_TEXT_VIEW(m_text), just);
 890     }
 891     else // single line
 892     {
 893         gfloat align;
 894         if ( HasFlag(wxTE_RIGHT) )
 895             align = 1.0;
 896         else if ( HasFlag(wxTE_CENTRE) )
 897             align = 0.5;
 898         else // single line
 899             align = 0.0;
 900
 901         gtk_entry_set_alignment(GTK_ENTRY(m_text), align);
 902     }
 903 }
 904
 905 void wxTextCtrl::SetWindowStyleFlag(long style)
 906 {
 907     long styleOld = GetWindowStyleFlag();
 908
 909     wxTextCtrlBase::SetWindowStyleFlag(style);
 910
 911     if ( (style & wxTE_READONLY) != (styleOld & wxTE_READONLY) )
 912         GTKSetEditable();
 913
 914     if ( (style & wxTE_PASSWORD) != (styleOld & wxTE_PASSWORD) )
 915         GTKSetVisibility();
 916
 917     if ( (style & wxTE_PROCESS_ENTER) != (styleOld & wxTE_PROCESS_ENTER) )
 918         GTKSetActivatesDefault();
 919
 920     static const long flagsWrap = wxTE_WORDWRAP | wxTE_CHARWRAP | wxTE_DONTWRAP;
 921     if ( (style & flagsWrap) != (styleOld & flagsWrap) )
 922         GTKSetWrapMode();
 923
 924     static const long flagsAlign = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 925     if ( (style & flagsAlign) != (styleOld & flagsAlign) )
 926         GTKSetJustification();
 927 }
 928
 929 // ----------------------------------------------------------------------------
 930 // control value
 931 // ----------------------------------------------------------------------------
 932
 933 wxString wxTextCtrl::GetValue() const
 934 {
 935     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 936
 937     if ( IsMultiLine() )
 938     {
 939         GtkTextIter start;
 940         gtk_text_buffer_get_start_iter( m_buffer, &start );
 941         GtkTextIter end;
 942         gtk_text_buffer_get_end_iter( m_buffer, &end );
 943         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 944
 945         return wxGTK_CONV_BACK(text);
 946     }
 947     else // single line
 948     {
 949         return wxTextEntry::GetValue();
 950     }
 951 }
 952
 953 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 954 {
 955     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 956     // encoding?
 957
 958     // first check the default text style (we intentionally don't check the
 959     // style for the current position as it doesn't make sense for SetValue())
 960     const wxTextAttr& style = GetDefaultStyle();
 961     wxFontEncoding enc = style.HasFontEncoding() ? style.GetFontEncoding()
 962                                          : wxFONTENCODING_SYSTEM;
 963
 964     // fall back to the controls font if no style
 965     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 966         enc = GetFont().GetEncoding();
 967
 968     return enc;
 969 }
 970
 971 bool wxTextCtrl::IsEmpty() const
 972 {
 973     if ( IsMultiLine() )
 974         return gtk_text_buffer_get_char_count(m_buffer) == 0;
 975
 976     return wxTextEntry::IsEmpty();
 977 }
 978
 979 void wxTextCtrl::DoSetValue( const wxString &value, int flags )
 980 {
 981     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 982
 983     m_modified = false;
 984
 985     if ( !IsMultiLine() )
 986     {
 987         wxTextEntry::DoSetValue(value, flags);
 988         return;
 989     }
 990
 991     if (value.IsEmpty())
 992     {
 993         if ( !(flags & SetValue_SendEvent) )
 994             EnableTextChangedEvents(false);
 995
 996         gtk_text_buffer_set_text( m_buffer, "", 0 );
 997
 998         if ( !(flags & SetValue_SendEvent) )
 999             EnableTextChangedEvents(true);
1000
1001         return;
1002     }
1003
1004 #if wxUSE_UNICODE
1005     const wxCharBuffer buffer(value.utf8_str());
1006 #else
1007     wxFontEncoding enc = m_defaultStyle.HasFont()
1008                             ? m_defaultStyle.GetFont().GetEncoding()
1009                             : wxFONTENCODING_SYSTEM;
1010     if ( enc == wxFONTENCODING_SYSTEM )
1011         enc = GetTextEncoding();
1012
1013     const wxCharBuffer buffer(wxGTK_CONV_ENC(value, enc));
1014     if ( !buffer )
1015     {
1016         // see comment in WriteText() as to why we must warn the user about
1017         // this
1018         wxLogWarning(_("Failed to set text in the text control."));
1019         return;
1020     }
1021 #endif
1022
1023     if ( !(flags & SetValue_SendEvent) )
1024     {
1025         EnableTextChangedEvents(false);
1026     }
1027
1028     gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
1029
1030     if ( !m_defaultStyle.IsDefault() )
1031     {
1032         GtkTextIter start, end;
1033         gtk_text_buffer_get_bounds( m_buffer, &start, &end );
1034         wxGtkTextApplyTagsFromAttr(m_widget, m_buffer, m_defaultStyle,
1035                                    &start, &end);
1036     }
1037
1038     if ( !(flags & SetValue_SendEvent) )
1039     {
1040         EnableTextChangedEvents(true);
1041     }
1042 }
1043
1044 void wxTextCtrl::WriteText( const wxString &text )
1045 {
1046     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1047
1048     // we're changing the text programmatically
1049     DontMarkDirtyOnNextChange();
1050
1051     if ( !IsMultiLine() )
1052     {
1053         wxTextEntry::WriteText(text);
1054         return;
1055     }
1056
1057 #if wxUSE_UNICODE
1058     const wxCharBuffer buffer(text.utf8_str());
1059 #else
1060     // check if we have a specific style for the current position
1061     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
1062     wxTextAttr style;
1063     if ( GetStyle(GetInsertionPoint(), style) && style.HasFontEncoding() )
1064     {
1065         enc = style.GetFontEncoding();
1066     }
1067
1068     if ( enc == wxFONTENCODING_SYSTEM )
1069         enc = GetTextEncoding();
1070
1071     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
1072     if ( !buffer )
1073     {
1074         // we must log an error here as losing the text like this can be a
1075         // serious problem (e.g. imagine the document edited by user being
1076         // empty instead of containing the correct text)
1077         wxLogWarning(_("Failed to insert text in the control."));
1078         return;
1079     }
1080 #endif
1081
1082     // First remove the selection if there is one
1083     // TODO:  Is there an easier GTK specific way to do this?
1084     long from, to;
1085     GetSelection(&from, &to);
1086     if (from != to)
1087         Remove(from, to);
1088
1089     // Insert the text
1090     wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
1091
1092     GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
1093     // Scroll to cursor, but only if scrollbar thumb is at the very bottom
1094     // won't work when frozen, text view is not using m_buffer then
1095     if (!IsFrozen() && wxIsSameDouble(adj->value, adj->upper - adj->page_size))
1096     {
1097         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
1098                 gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
1099     }
1100 }
1101
1102 wxString wxTextCtrl::GetLineText( long lineNo ) const
1103 {
1104     wxString result;
1105     if ( IsMultiLine() )
1106     {
1107         GtkTextIter line;
1108         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
1109
1110         GtkTextIter end = line;
1111         // avoid skipping to the next line end if this one is empty
1112         if ( !gtk_text_iter_ends_line(&line) )
1113             gtk_text_iter_forward_to_line_end(&end);
1114
1115         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
1116         result = wxGTK_CONV_BACK(text);
1117     }
1118     else
1119     {
1120         if (lineNo == 0)
1121             result = GetValue();
1122     }
1123     return result;
1124 }
1125
1126 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
1127 {
1128   /* If you implement this, don't forget to update the documentation!
1129    * (file docs/latex/wx/text.tex) */
1130     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
1131 }
1132
1133 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
1134 {
1135     if ( IsMultiLine() )
1136     {
1137         GtkTextIter iter;
1138
1139         if (pos > GetLastPosition())
1140             return false;
1141
1142         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
1143
1144         if ( y )
1145             *y = gtk_text_iter_get_line(&iter);
1146         if ( x )
1147             *x = gtk_text_iter_get_line_offset(&iter);
1148     }
1149     else // single line control
1150     {
1151         if ( pos <= GTK_ENTRY(m_text)->text_length )
1152         {
1153             if ( y )
1154                 *y = 0;
1155             if ( x )
1156                 *x = pos;
1157         }
1158         else
1159         {
1160             // index out of bounds
1161             return false;
1162         }
1163     }
1164
1165     return true;
1166 }
1167
1168 long wxTextCtrl::XYToPosition(long x, long y ) const
1169 {
1170     if ( IsSingleLine() )
1171         return 0;
1172
1173     GtkTextIter iter;
1174     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1175         return -1;
1176
1177     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1178     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1179         return -1;
1180
1181     return gtk_text_iter_get_offset(&iter) + x;
1182 }
1183
1184 int wxTextCtrl::GetLineLength(long lineNo) const
1185 {
1186     if ( IsMultiLine() )
1187     {
1188         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1189         if (lineNo > last_line)
1190             return -1;
1191
1192         GtkTextIter iter;
1193         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1194         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1195         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1196     }
1197     else
1198     {
1199         wxString str = GetLineText (lineNo);
1200         return (int) str.length();
1201     }
1202 }
1203
1204 int wxTextCtrl::GetNumberOfLines() const
1205 {
1206     if ( IsMultiLine() )
1207     {
1208         return gtk_text_buffer_get_line_count( m_buffer );
1209     }
1210     else // single line
1211     {
1212         return 1;
1213     }
1214 }
1215
1216 void wxTextCtrl::SetInsertionPoint( long pos )
1217 {
1218     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1219
1220     if ( IsMultiLine() )
1221     {
1222         GtkTextIter iter;
1223         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1224         gtk_text_buffer_place_cursor( m_buffer, &iter );
1225         GtkTextMark* mark = gtk_text_buffer_get_insert(m_buffer);
1226         if (IsFrozen())
1227             // defer until Thaw, text view is not using m_buffer now
1228             m_showPositionOnThaw = mark;
1229         else
1230             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1231     }
1232     else // single line
1233     {
1234         wxTextEntry::SetInsertionPoint(pos);
1235     }
1236 }
1237
1238 void wxTextCtrl::SetEditable( bool editable )
1239 {
1240     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1241
1242     if ( IsMultiLine() )
1243     {
1244         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1245     }
1246     else // single line
1247     {
1248         wxTextEntry::SetEditable(editable);
1249     }
1250 }
1251
1252 bool wxTextCtrl::Enable( bool enable )
1253 {
1254     if (!wxWindowBase::Enable(enable))
1255     {
1256         // nothing to do
1257         return false;
1258     }
1259
1260     gtk_widget_set_sensitive( m_text, enable );
1261     SetCursor(enable ? wxCursor(wxCURSOR_IBEAM) : wxCursor());
1262
1263     return true;
1264 }
1265
1266 // wxGTK-specific: called recursively by Enable,
1267 // to give widgets an opportunity to correct their colours after they
1268 // have been changed by Enable
1269 void wxTextCtrl::OnEnabled(bool WXUNUSED(enable))
1270 {
1271     // If we have a custom background colour, we use this colour in both
1272     // disabled and enabled mode, or we end up with a different colour under the
1273     // text.
1274     wxColour oldColour = GetBackgroundColour();
1275     if (oldColour.Ok())
1276     {
1277         // Need to set twice or it'll optimize the useful stuff out
1278         if (oldColour == * wxWHITE)
1279             SetBackgroundColour(*wxBLACK);
1280         else
1281             SetBackgroundColour(*wxWHITE);
1282         SetBackgroundColour(oldColour);
1283     }
1284 }
1285
1286 void wxTextCtrl::MarkDirty()
1287 {
1288     m_modified = true;
1289 }
1290
1291 void wxTextCtrl::DiscardEdits()
1292 {
1293     m_modified = false;
1294 }
1295
1296 // ----------------------------------------------------------------------------
1297 // event handling
1298 // ----------------------------------------------------------------------------
1299
1300 void wxTextCtrl::EnableTextChangedEvents(bool enable)
1301 {
1302     if ( enable )
1303     {
1304         g_signal_handlers_unblock_by_func(GetTextObject(),
1305             (gpointer)gtk_text_changed_callback, this);
1306     }
1307     else // disable events
1308     {
1309         g_signal_handlers_block_by_func(GetTextObject(),
1310             (gpointer)gtk_text_changed_callback, this);
1311     }
1312 }
1313
1314 bool wxTextCtrl::IgnoreTextUpdate()
1315 {
1316     if ( m_countUpdatesToIgnore > 0 )
1317     {
1318         m_countUpdatesToIgnore--;
1319
1320         return true;
1321     }
1322
1323     return false;
1324 }
1325
1326 bool wxTextCtrl::MarkDirtyOnChange()
1327 {
1328     if ( m_dontMarkDirty )
1329     {
1330         m_dontMarkDirty = false;
1331
1332         return false;
1333     }
1334
1335     return true;
1336 }
1337
1338 void wxTextCtrl::SetSelection( long from, long to )
1339 {
1340     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1341
1342     if (from == -1 && to == -1)
1343     {
1344         from = 0;
1345         to = GetValue().length();
1346     }
1347
1348     if ( IsMultiLine() )
1349     {
1350         GtkTextIter fromi, toi;
1351         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1352         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1353
1354         gtk_text_buffer_select_range( m_buffer, &fromi, &toi );
1355     }
1356     else // single line
1357     {
1358         wxTextEntry::SetSelection(from, to);
1359     }
1360 }
1361
1362 void wxTextCtrl::ShowPosition( long pos )
1363 {
1364     if (IsMultiLine())
1365     {
1366         GtkTextIter iter;
1367         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, int(pos));
1368         GtkTextMark* mark = gtk_text_buffer_get_mark(m_buffer, "ShowPosition");
1369         gtk_text_buffer_move_mark(m_buffer, mark, &iter);
1370         if (IsFrozen())
1371             // defer until Thaw, text view is not using m_buffer now
1372             m_showPositionOnThaw = mark;
1373         else
1374             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1375     }
1376 }
1377
1378 wxTextCtrlHitTestResult
1379 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1380 {
1381     if ( !IsMultiLine() )
1382     {
1383         // not supported
1384         return wxTE_HT_UNKNOWN;
1385     }
1386
1387     int x, y;
1388     gtk_text_view_window_to_buffer_coords
1389     (
1390         GTK_TEXT_VIEW(m_text),
1391         GTK_TEXT_WINDOW_TEXT,
1392         pt.x, pt.y,
1393         &x, &y
1394     );
1395
1396     GtkTextIter iter;
1397     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1398     if ( pos )
1399         *pos = gtk_text_iter_get_offset(&iter);
1400
1401     return wxTE_HT_ON_TEXT;
1402 }
1403
1404 long wxTextCtrl::GetInsertionPoint() const
1405 {
1406     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1407
1408     if ( IsMultiLine() )
1409     {
1410         // There is no direct accessor for the cursor, but
1411         // internally, the cursor is the "mark" called
1412         // "insert" in the text view's btree structure.
1413
1414         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1415         GtkTextIter cursor;
1416         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1417
1418         return gtk_text_iter_get_offset( &cursor );
1419     }
1420     else
1421     {
1422         return wxTextEntry::GetInsertionPoint();
1423     }
1424 }
1425
1426 wxTextPos wxTextCtrl::GetLastPosition() const
1427 {
1428     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1429
1430     int pos = 0;
1431
1432     if ( IsMultiLine() )
1433     {
1434         GtkTextIter end;
1435         gtk_text_buffer_get_end_iter( m_buffer, &end );
1436
1437         pos = gtk_text_iter_get_offset( &end );
1438     }
1439     else // single line
1440     {
1441         pos = wxTextEntry::GetLastPosition();
1442     }
1443
1444     return (long)pos;
1445 }
1446
1447 void wxTextCtrl::Remove( long from, long to )
1448 {
1449     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1450
1451     if ( IsMultiLine() )
1452     {
1453         GtkTextIter fromi, toi;
1454         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1455         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1456
1457         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1458     }
1459     else // single line
1460     {
1461         wxTextEntry::Remove(from, to);
1462     }
1463 }
1464
1465 void wxTextCtrl::Cut()
1466 {
1467     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1468
1469     if ( IsMultiLine() )
1470         g_signal_emit_by_name (m_text, "cut-clipboard");
1471     else
1472         wxTextEntry::Cut();
1473 }
1474
1475 void wxTextCtrl::Copy()
1476 {
1477     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1478
1479     if ( IsMultiLine() )
1480         g_signal_emit_by_name (m_text, "copy-clipboard");
1481     else
1482         wxTextEntry::Copy();
1483 }
1484
1485 void wxTextCtrl::Paste()
1486 {
1487     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1488
1489     if ( IsMultiLine() )
1490         g_signal_emit_by_name (m_text, "paste-clipboard");
1491     else
1492         wxTextEntry::Paste();
1493 }
1494
1495 // If the return values from and to are the same, there is no
1496 // selection.
1497 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1498 {
1499     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1500
1501     if ( !IsMultiLine() )
1502     {
1503         wxTextEntry::GetSelection(fromOut, toOut);
1504         return;
1505     }
1506
1507     gint from, to;
1508
1509     GtkTextIter ifrom, ito;
1510     if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1511     {
1512         from = gtk_text_iter_get_offset(&ifrom);
1513         to = gtk_text_iter_get_offset(&ito);
1514
1515         if ( from > to )
1516         {
1517             // exchange them to be compatible with wxMSW
1518             gint tmp = from;
1519             from = to;
1520             to = tmp;
1521         }
1522     }
1523     else // no selection
1524     {
1525         from =
1526         to = GetInsertionPoint();
1527     }
1528
1529     if ( fromOut )
1530         *fromOut = from;
1531     if ( toOut )
1532         *toOut = to;
1533 }
1534
1535
1536 bool wxTextCtrl::IsEditable() const
1537 {
1538     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1539
1540     if ( IsMultiLine() )
1541     {
1542         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1543     }
1544     else
1545     {
1546         return wxTextEntry::IsEditable();
1547     }
1548 }
1549
1550 bool wxTextCtrl::IsModified() const
1551 {
1552     return m_modified;
1553 }
1554
1555 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1556 {
1557     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1558
1559     if ( key_event.GetKeyCode() == WXK_RETURN )
1560     {
1561         if ( HasFlag(wxTE_PROCESS_ENTER) )
1562         {
1563             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1564             event.SetEventObject(this);
1565             event.SetString(GetValue());
1566             if ( HandleWindowEvent(event) )
1567                 return;
1568         }
1569     }
1570
1571     key_event.Skip();
1572 }
1573
1574 GtkWidget* wxTextCtrl::GetConnectWidget()
1575 {
1576     return GTK_WIDGET(m_text);
1577 }
1578
1579 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1580 {
1581     if ( IsMultiLine() )
1582     {
1583         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1584                                         GTK_TEXT_WINDOW_TEXT );
1585     }
1586     else
1587     {
1588         return GTK_ENTRY(m_text)->text_area;
1589     }
1590 }
1591
1592 // the font will change for subsequent text insertiongs
1593 bool wxTextCtrl::SetFont( const wxFont &font )
1594 {
1595     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1596
1597     if ( !wxTextCtrlBase::SetFont(font) )
1598     {
1599         // font didn't change, nothing to do
1600         return false;
1601     }
1602
1603     if ( IsMultiLine() )
1604     {
1605         SetUpdateFont(true);
1606
1607         m_defaultStyle.SetFont(font);
1608
1609         ChangeFontGlobally();
1610     }
1611
1612     return true;
1613 }
1614
1615 void wxTextCtrl::ChangeFontGlobally()
1616 {
1617     // this method is very inefficient and hence should be called as rarely as
1618     // possible!
1619     //
1620     // TODO: it can be implemented much more efficiently for GTK2
1621     wxASSERT_MSG( IsMultiLine(),
1622                   wxT("shouldn't be called for single line controls") );
1623
1624     wxString value = GetValue();
1625     if ( !value.empty() )
1626     {
1627         SetUpdateFont(false);
1628
1629         Clear();
1630         AppendText(value);
1631     }
1632 }
1633
1634 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1635 {
1636     if ( !wxControl::SetForegroundColour(colour) )
1637         return false;
1638
1639     // update default fg colour too
1640     m_defaultStyle.SetTextColour(colour);
1641
1642     return true;
1643 }
1644
1645 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1646 {
1647     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1648
1649     if ( !wxControl::SetBackgroundColour( colour ) )
1650         return false;
1651
1652     if (!m_backgroundColour.Ok())
1653         return false;
1654
1655     // change active background color too
1656     m_defaultStyle.SetBackgroundColour( colour );
1657
1658     return true;
1659 }
1660
1661 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1662 {
1663     if ( IsMultiLine() )
1664     {
1665         if ( style.IsDefault() )
1666         {
1667             // nothing to do
1668             return true;
1669         }
1670
1671         gint l = gtk_text_buffer_get_char_count( m_buffer );
1672
1673         wxCHECK_MSG( start >= 0 && end <= l, false,
1674                      wxT("invalid range in wxTextCtrl::SetStyle") );
1675
1676         GtkTextIter starti, endi;
1677         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1678         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1679
1680         wxGtkTextApplyTagsFromAttr( m_widget, m_buffer, style, &starti, &endi );
1681
1682         return true;
1683     }
1684     //else: single line text controls don't support styles
1685
1686     return false;
1687 }
1688
1689 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
1690 {
1691     if ( !IsMultiLine() )
1692     {
1693         // no styles for GtkEntry
1694         return false;
1695     }
1696
1697     gint l = gtk_text_buffer_get_char_count( m_buffer );
1698
1699     wxCHECK_MSG( position >= 0 && position <= l, false,
1700                  _T("invalid range in wxTextCtrl::GetStyle") );
1701
1702     GtkTextIter positioni;
1703     gtk_text_buffer_get_iter_at_offset(m_buffer, &positioni, position);
1704
1705     // Obtain a copy of the default attributes
1706     GtkTextAttributes * const
1707         pattr = gtk_text_view_get_default_attributes(GTK_TEXT_VIEW(m_text));
1708     wxON_BLOCK_EXIT1( g_free, pattr );
1709
1710     // And query GTK for the attributes at the given position using it as base
1711     if ( !gtk_text_iter_get_attributes(&positioni, pattr) )
1712     {
1713         style = m_defaultStyle;
1714     }
1715     else // have custom attributes
1716     {
1717         style.SetBackgroundColour(pattr->appearance.bg_color);
1718         style.SetTextColour(pattr->appearance.fg_color);
1719
1720         // TODO: set font, 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         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1867                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1868         return;
1869     }
1870
1871     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1872                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1873
1874     start = end;
1875     if(!gtk_text_iter_begins_tag(&start, tag))
1876         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1877     if(!gtk_text_iter_ends_tag(&end, tag))
1878         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1879
1880     // Native context menu is probably not desired on an URL.
1881     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1882     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1883         event.Skip(false);
1884
1885     wxTextUrlEvent url_event(m_windowId, event,
1886                              gtk_text_iter_get_offset(&start),
1887                              gtk_text_iter_get_offset(&end));
1888
1889     InitCommandEvent(url_event);
1890     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1891     //event.Skip(!HandleWindowEvent(url_event));
1892     HandleWindowEvent(url_event);
1893 }
1894
1895 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
1896 {
1897     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
1898
1899     // GtkTextView starts a drag operation when left mouse button is pressed
1900     // and ends it when it is released and if it doesn't get the release event
1901     // the next click on a control results in an assertion failure inside
1902     // gtk_text_view_start_selection_drag() which simply *kills* the program
1903     // without anything we can do about it, so always let GTK+ have this event
1904     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
1905 }
1906
1907 // static
1908 wxVisualAttributes
1909 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1910 {
1911     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1912 }
1913
1914 #endif // wxUSE_TEXTCTRL