src/gtk/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin, 2005 Mart Raudsepp
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_TEXTCTRL
  14
  15 #include "wx/textctrl.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/intl.h"
  19     #include "wx/log.h"
  20     #include "wx/utils.h"
  21     #include "wx/settings.h"
  22     #include "wx/math.h"
  23 #endif
  24
  25 #include "wx/strconv.h"
  26 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  27
  28 #include <sys/types.h>
  29 #include <sys/stat.h>
  30 #include <ctype.h>
  31
  32 #include "wx/gtk/private.h"
  33
  34 // ----------------------------------------------------------------------------
  35 // helpers
  36 // ----------------------------------------------------------------------------
  37
  38 extern "C" {
  39 static void wxGtkOnRemoveTag(GtkTextBuffer *buffer,
  40                              GtkTextTag *tag,
  41                              GtkTextIter * WXUNUSED(start),
  42                              GtkTextIter * WXUNUSED(end),
  43                              char *prefix)
  44 {
  45     gchar *name;
  46     g_object_get (tag, "name", &name, NULL);
  47
  48     if (!name || strncmp(name, prefix, strlen(prefix)))
  49         // anonymous tag or not starting with prefix - don't remove
  50         g_signal_stop_emission_by_name (buffer, "remove_tag");
  51
  52     g_free(name);
  53 }
  54 }
  55
  56 // remove all tags starting with the given prefix from the start..end range
  57 static void
  58 wxGtkTextRemoveTagsWithPrefix(GtkTextBuffer *text_buffer,
  59                               const char *prefix,
  60                               GtkTextIter *start,
  61                               GtkTextIter *end)
  62 {
  63     gulong remove_handler_id = g_signal_connect
  64                                (
  65                                 text_buffer,
  66                                 "remove_tag",
  67                                 G_CALLBACK(wxGtkOnRemoveTag),
  68                                 gpointer(prefix)
  69                                );
  70     gtk_text_buffer_remove_all_tags(text_buffer, start, end);
  71     g_signal_handler_disconnect(text_buffer, remove_handler_id);
  72 }
  73
  74 static void wxGtkTextApplyTagsFromAttr(GtkWidget *text,
  75                                        GtkTextBuffer *text_buffer,
  76                                        const wxTextAttr& attr,
  77                                        GtkTextIter *start,
  78                                        GtkTextIter *end)
  79 {
  80     static gchar buf[1024];
  81     GtkTextTag *tag;
  82
  83     if (attr.HasFont())
  84     {
  85         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXFONT", start, end);
  86
  87         wxFont font(attr.GetFont());
  88
  89         PangoFontDescription *font_description = font.GetNativeFontInfo()->description;
  90         wxGtkString font_string(pango_font_description_to_string(font_description));
  91         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string.c_str());
  92         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  93                                          buf );
  94         if (!tag)
  95             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  96                                               "font-desc", font_description,
  97                                               NULL );
  98         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  99
 100         if (font.GetUnderlined())
 101         {
 102             g_snprintf(buf, sizeof(buf), "WXFONTUNDERLINE");
 103             tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 104                                              buf );
 105             if (!tag)
 106                 tag = gtk_text_buffer_create_tag( text_buffer, buf,
 107                                                   "underline-set", TRUE,
 108                                                   "underline", PANGO_UNDERLINE_SINGLE,
 109                                                   NULL );
 110             gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 111         }
 112     }
 113
 114     if (attr.HasTextColour())
 115     {
 116         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXFORECOLOR", start, end);
 117
 118         const GdkColor *colFg = attr.GetTextColour().GetColor();
 119         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
 120                    colFg->red, colFg->green, colFg->blue);
 121         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 122                                          buf );
 123         if (!tag)
 124             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 125                                               "foreground-gdk", colFg, NULL );
 126         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 127     }
 128
 129     if (attr.HasBackgroundColour())
 130     {
 131         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXBACKCOLOR", start, end);
 132
 133         const GdkColor *colBg = attr.GetBackgroundColour().GetColor();
 134         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
 135                    colBg->red, colBg->green, colBg->blue);
 136         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 137                                          buf );
 138         if (!tag)
 139             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 140                                               "background-gdk", colBg, NULL );
 141         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 142     }
 143
 144     if (attr.HasAlignment())
 145     {
 146         GtkTextIter para_start, para_end = *end;
 147         gtk_text_buffer_get_iter_at_line( text_buffer,
 148                                           &para_start,
 149                                           gtk_text_iter_get_line(start) );
 150         gtk_text_iter_forward_line(&para_end);
 151
 152         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXALIGNMENT", start, end);
 153
 154         GtkJustification align;
 155         switch (attr.GetAlignment())
 156         {
 157             default:
 158                 align = GTK_JUSTIFY_LEFT;
 159                 break;
 160             case wxTEXT_ALIGNMENT_RIGHT:
 161                 align = GTK_JUSTIFY_RIGHT;
 162                 break;
 163             case wxTEXT_ALIGNMENT_CENTER:
 164                 align = GTK_JUSTIFY_CENTER;
 165                 break;
 166 // gtk+ doesn't support justify before gtk+-2.11.0 with pango-1.17 being available
 167 // (but if new enough pango isn't available it's a mere gtk warning)
 168 #if GTK_CHECK_VERSION(2,11,0)
 169             case wxTEXT_ALIGNMENT_JUSTIFIED:
 170                 if (!gtk_check_version(2,11,0))
 171                     align = GTK_JUSTIFY_FILL;
 172                 else
 173                     align = GTK_JUSTIFY_LEFT;
 174                 break;
 175 #endif
 176         }
 177
 178         g_snprintf(buf, sizeof(buf), "WXALIGNMENT %d", align);
 179         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 180                                          buf );
 181         if (!tag)
 182             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 183                                               "justification", align, NULL );
 184         gtk_text_buffer_apply_tag( text_buffer, tag, &para_start, &para_end );
 185     }
 186
 187     if (attr.HasLeftIndent())
 188     {
 189         // Indentation attribute
 190
 191         // Clear old indentation tags
 192         GtkTextIter para_start, para_end = *end;
 193         gtk_text_buffer_get_iter_at_line( text_buffer,
 194                                           &para_start,
 195                                           gtk_text_iter_get_line(start) );
 196         gtk_text_iter_forward_line(&para_end);
 197
 198         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXINDENT", start, end);
 199
 200         // Convert indent from 1/10th of a mm into pixels
 201         float factor =
 202             (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 203                       gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 204
 205         const int indent = (int)(factor * attr.GetLeftIndent());
 206         const int subIndent = (int)(factor * attr.GetLeftSubIndent());
 207
 208         gint gindent;
 209         gint gsubindent;
 210
 211         if (subIndent >= 0)
 212         {
 213             gindent = indent;
 214             gsubindent = -subIndent;
 215         }
 216         else
 217         {
 218             gindent = -subIndent;
 219             gsubindent = indent;
 220         }
 221
 222         g_snprintf(buf, sizeof(buf), "WXINDENT %d %d", gindent, gsubindent);
 223         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 224                                         buf );
 225         if (!tag)
 226             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 227                                               "left-margin", gindent, "indent", gsubindent, NULL );
 228         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 229     }
 230
 231     if (attr.HasTabs())
 232     {
 233         // Set tab stops
 234
 235         // Clear old tabs
 236         GtkTextIter para_start, para_end = *end;
 237         gtk_text_buffer_get_iter_at_line( text_buffer,
 238                                           &para_start,
 239                                           gtk_text_iter_get_line(start) );
 240         gtk_text_iter_forward_line(&para_end);
 241
 242         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXTABS", start, end);
 243
 244         const wxArrayInt& tabs = attr.GetTabs();
 245
 246         wxString tagname = _T("WXTABS");
 247         g_snprintf(buf, sizeof(buf), "WXTABS");
 248         for (size_t i = 0; i < tabs.GetCount(); i++)
 249             tagname += wxString::Format(_T(" %d"), tabs[i]);
 250
 251         const wxWX2MBbuf buftag = tagname.utf8_str();
 252
 253         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 254                                         buftag );
 255         if (!tag)
 256         {
 257             // Factor to convert from 1/10th of a mm into pixels
 258             float factor =
 259                 (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 260                           gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 261
 262             PangoTabArray* tabArray = pango_tab_array_new(tabs.GetCount(), TRUE);
 263             for (size_t i = 0; i < tabs.GetCount(); i++)
 264                 pango_tab_array_set_tab(tabArray, i, PANGO_TAB_LEFT, (gint)(tabs[i] * factor));
 265             tag = gtk_text_buffer_create_tag( text_buffer, buftag,
 266                                               "tabs", tabArray, NULL );
 267             pango_tab_array_free(tabArray);
 268         }
 269         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 270     }
 271 }
 272
 273 static void wxGtkTextInsert(GtkWidget *text,
 274                             GtkTextBuffer *text_buffer,
 275                             const wxTextAttr& attr,
 276                             const wxCharBuffer& buffer)
 277
 278 {
 279     gint start_offset;
 280     GtkTextIter iter, start;
 281
 282     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 283                                      gtk_text_buffer_get_insert (text_buffer) );
 284     start_offset = gtk_text_iter_get_offset (&iter);
 285     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 286
 287     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 288
 289     wxGtkTextApplyTagsFromAttr(text, text_buffer, attr, &start, &iter);
 290 }
 291
 292 // Implementation of wxTE_AUTO_URL for wxGTK2 by Mart Raudsepp,
 293
 294 extern "C" {
 295 static void
 296 au_apply_tag_callback(GtkTextBuffer *buffer,
 297                       GtkTextTag *tag,
 298                       GtkTextIter * WXUNUSED(start),
 299                       GtkTextIter * WXUNUSED(end),
 300                       gpointer WXUNUSED(textctrl))
 301 {
 302     if(tag == gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl"))
 303         g_signal_stop_emission_by_name (buffer, "apply_tag");
 304 }
 305 }
 306
 307 //-----------------------------------------------------------------------------
 308 //  GtkTextCharPredicates for gtk_text_iter_*_find_char
 309 //-----------------------------------------------------------------------------
 310
 311 extern "C" {
 312 static gboolean
 313 pred_whitespace(gunichar ch, gpointer WXUNUSED(user_data))
 314 {
 315     return g_unichar_isspace(ch);
 316 }
 317 }
 318
 319 extern "C" {
 320 static gboolean
 321 pred_non_whitespace (gunichar ch, gpointer WXUNUSED(user_data))
 322 {
 323     return !g_unichar_isspace(ch);
 324 }
 325 }
 326
 327 extern "C" {
 328 static gboolean
 329 pred_nonpunct (gunichar ch, gpointer WXUNUSED(user_data))
 330 {
 331     return !g_unichar_ispunct(ch);
 332 }
 333 }
 334
 335 extern "C" {
 336 static gboolean
 337 pred_nonpunct_or_slash (gunichar ch, gpointer WXUNUSED(user_data))
 338 {
 339     return !g_unichar_ispunct(ch) || ch == '/';
 340 }
 341 }
 342
 343 //-----------------------------------------------------------------------------
 344 //  Check for links between s and e and correct tags as necessary
 345 //-----------------------------------------------------------------------------
 346
 347 // This function should be made match better while being efficient at one point.
 348 // Most probably with a row of regular expressions.
 349 extern "C" {
 350 static void
 351 au_check_word( GtkTextIter *s, GtkTextIter *e )
 352 {
 353     static const char *URIPrefixes[] =
 354     {
 355         "http://",
 356         "ftp://",
 357         "www.",
 358         "ftp.",
 359         "mailto://",
 360         "https://",
 361         "file://",
 362         "nntp://",
 363         "news://",
 364         "telnet://",
 365         "mms://",
 366         "gopher://",
 367         "prospero://",
 368         "wais://",
 369     };
 370
 371     GtkTextIter start = *s, end = *e;
 372     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 373
 374     // Get our special link tag
 375     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 376
 377     // Get rid of punctuation from beginning and end.
 378     // Might want to move this to au_check_range if an improved link checking doesn't
 379     // use some intelligent punctuation checking itself (beware of undesired iter modifications).
 380     if(g_unichar_ispunct( gtk_text_iter_get_char( &start ) ) )
 381         gtk_text_iter_forward_find_char( &start, pred_nonpunct, NULL, e );
 382
 383     gtk_text_iter_backward_find_char( &end, pred_nonpunct_or_slash, NULL, &start );
 384     gtk_text_iter_forward_char(&end);
 385
 386     wxGtkString text(gtk_text_iter_get_text( &start, &end ));
 387     size_t len = strlen(text), prefix_len;
 388     size_t n;
 389
 390     for( n = 0; n < WXSIZEOF(URIPrefixes); ++n )
 391     {
 392         prefix_len = strlen(URIPrefixes[n]);
 393         if((len > prefix_len) && !strncasecmp(text, URIPrefixes[n], prefix_len))
 394             break;
 395     }
 396
 397     if(n < WXSIZEOF(URIPrefixes))
 398     {
 399         gulong signal_id = g_signal_handler_find (buffer,
 400                                                   (GSignalMatchType) (G_SIGNAL_MATCH_FUNC),
 401                                                   0, 0, NULL,
 402                                                   (gpointer)au_apply_tag_callback, NULL);
 403
 404         g_signal_handler_block (buffer, signal_id);
 405         gtk_text_buffer_apply_tag(buffer, tag, &start, &end);
 406         g_signal_handler_unblock (buffer, signal_id);
 407     }
 408 }
 409 }
 410
 411 extern "C" {
 412 static void
 413 au_check_range(GtkTextIter *s,
 414                GtkTextIter *range_end)
 415 {
 416     GtkTextIter range_start = *s;
 417     GtkTextIter word_end;
 418     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 419     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 420
 421     gtk_text_buffer_remove_tag(buffer, tag, s, range_end);
 422
 423     if(g_unichar_isspace(gtk_text_iter_get_char(&range_start)))
 424         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 425
 426     while(!gtk_text_iter_equal(&range_start, range_end))
 427     {
 428         word_end = range_start;
 429         gtk_text_iter_forward_find_char(&word_end, pred_whitespace, NULL, range_end);
 430
 431         // Now we should have a word delimited by range_start and word_end, correct link tags
 432         au_check_word(&range_start, &word_end);
 433
 434         range_start = word_end;
 435         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 436     }
 437 }
 438 }
 439
 440 //-----------------------------------------------------------------------------
 441 //  "insert-text" for GtkTextBuffer
 442 //-----------------------------------------------------------------------------
 443
 444 extern "C" {
 445 static void
 446 au_insert_text_callback(GtkTextBuffer * WXUNUSED(buffer),
 447                         GtkTextIter *end,
 448                         gchar *text,
 449                         gint len,
 450                         wxTextCtrl *win)
 451 {
 452     if (!len || !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 453         return;
 454
 455     GtkTextIter start = *end;
 456     gtk_text_iter_backward_chars(&start, g_utf8_strlen(text, len));
 457
 458     GtkTextIter line_start = start;
 459     GtkTextIter line_end = *end;
 460     GtkTextIter words_start = start;
 461     GtkTextIter words_end = *end;
 462
 463     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(&start));
 464     gtk_text_iter_forward_to_line_end(&line_end);
 465     gtk_text_iter_backward_find_char(&words_start, pred_whitespace, NULL, &line_start);
 466     gtk_text_iter_forward_find_char(&words_end, pred_whitespace, NULL, &line_end);
 467
 468     au_check_range(&words_start, &words_end);
 469 }
 470 }
 471
 472 //-----------------------------------------------------------------------------
 473 //  "delete-range" for GtkTextBuffer
 474 //-----------------------------------------------------------------------------
 475
 476 extern "C" {
 477 static void
 478 au_delete_range_callback(GtkTextBuffer * WXUNUSED(buffer),
 479                          GtkTextIter *start,
 480                          GtkTextIter *end,
 481                          wxTextCtrl *win)
 482 {
 483     if( !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 484         return;
 485
 486     GtkTextIter line_start = *start, line_end = *end;
 487
 488     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(start));
 489     gtk_text_iter_forward_to_line_end(&line_end);
 490     gtk_text_iter_backward_find_char(start, pred_whitespace, NULL, &line_start);
 491     gtk_text_iter_forward_find_char(end, pred_whitespace, NULL, &line_end);
 492
 493     au_check_range(start, end);
 494 }
 495 }
 496
 497
 498 //-----------------------------------------------------------------------------
 499 //  "changed"
 500 //-----------------------------------------------------------------------------
 501
 502 extern "C" {
 503 static void
 504 gtk_text_changed_callback( GtkWidget * WXUNUSED(widget), wxTextCtrl *win )
 505 {
 506     if ( win->IgnoreTextUpdate() )
 507         return;
 508
 509     if (!win->m_hasVMT) return;
 510
 511     if ( win->MarkDirtyOnChange() )
 512         win->MarkDirty();
 513
 514     win->SendTextUpdatedEvent();
 515 }
 516 }
 517
 518 //-----------------------------------------------------------------------------
 519 //  clipboard events: "copy-clipboard", "cut-clipboard", "paste-clipboard"
 520 //-----------------------------------------------------------------------------
 521
 522 // common part of the event handlers below
 523 static void
 524 handle_text_clipboard_callback( GtkWidget *widget, wxTextCtrl *win,
 525                                 wxEventType eventType, const gchar * signal_name)
 526 {
 527     wxClipboardTextEvent event( eventType, win->GetId() );
 528     event.SetEventObject( win );
 529     if ( win->HandleWindowEvent( event ) )
 530     {
 531         // don't let the default processing to take place if we did something
 532         // ourselves in the event handler
 533         g_signal_stop_emission_by_name (widget, signal_name);
 534     }
 535 }
 536
 537 extern "C" {
 538 static void
 539 gtk_copy_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 540 {
 541     handle_text_clipboard_callback(
 542         widget, win, wxEVT_COMMAND_TEXT_COPY, "copy-clipboard" );
 543 }
 544
 545 static void
 546 gtk_cut_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 547 {
 548     handle_text_clipboard_callback(
 549         widget, win, wxEVT_COMMAND_TEXT_CUT, "cut-clipboard" );
 550 }
 551
 552 static void
 553 gtk_paste_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 554 {
 555     handle_text_clipboard_callback(
 556         widget, win, wxEVT_COMMAND_TEXT_PASTE, "paste-clipboard" );
 557 }
 558 }
 559
 560 //-----------------------------------------------------------------------------
 561 //  wxTextCtrl
 562 //-----------------------------------------------------------------------------
 563
 564 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 565
 566 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 567     EVT_CHAR(wxTextCtrl::OnChar)
 568
 569     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 570     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 571     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 572     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 573     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 574
 575     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 576     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 577     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 578     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 579     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 580
 581     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 582     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 583     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 584     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 585     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 586     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 587     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 588     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 589     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 590 END_EVENT_TABLE()
 591
 592 void wxTextCtrl::Init()
 593 {
 594     m_dontMarkDirty =
 595     m_modified = false;
 596
 597     m_countUpdatesToIgnore = 0;
 598
 599     SetUpdateFont(false);
 600
 601     m_text = NULL;
 602     m_showPositionOnThaw = NULL;
 603     m_gdkHandCursor = NULL;
 604     m_gdkXTermCursor = NULL;
 605 }
 606
 607 wxTextCtrl::~wxTextCtrl()
 608 {
 609     if(m_gdkHandCursor)
 610         gdk_cursor_unref(m_gdkHandCursor);
 611     if(m_gdkXTermCursor)
 612         gdk_cursor_unref(m_gdkXTermCursor);
 613 }
 614
 615 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 616                         wxWindowID id,
 617                         const wxString &value,
 618                         const wxPoint &pos,
 619                         const wxSize &size,
 620                         long style,
 621                         const wxValidator& validator,
 622                         const wxString &name )
 623 {
 624     Init();
 625
 626     Create( parent, id, value, pos, size, style, validator, name );
 627 }
 628
 629 bool wxTextCtrl::Create( 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     if (!PreCreation( parent, pos, size ) ||
 639         !CreateBase( parent, id, pos, size, style, validator, name ))
 640     {
 641         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 642         return false;
 643     }
 644
 645     bool multi_line = (style & wxTE_MULTILINE) != 0;
 646
 647     if (multi_line)
 648     {
 649         // Create view
 650         m_text = gtk_text_view_new();
 651
 652         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 653
 654         // create "ShowPosition" marker
 655         GtkTextIter iter;
 656         gtk_text_buffer_get_start_iter(m_buffer, &iter);
 657         gtk_text_buffer_create_mark(m_buffer, "ShowPosition", &iter, true);
 658
 659         // create scrolled window
 660         m_widget = gtk_scrolled_window_new( NULL, NULL );
 661         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 662                                         GTK_POLICY_AUTOMATIC,
 663                                         style & wxTE_NO_VSCROLL
 664                                             ? GTK_POLICY_NEVER
 665                                             : GTK_POLICY_AUTOMATIC );
 666         // for ScrollLines/Pages
 667         m_scrollBar[1] = (GtkRange*)((GtkScrolledWindow*)m_widget)->vscrollbar;
 668
 669         // Insert view into scrolled window
 670         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 671
 672         GTKSetWrapMode();
 673
 674         GtkScrolledWindowSetBorder(m_widget, style);
 675
 676         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 677
 678         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 679     }
 680     else
 681     {
 682         // a single-line text control: no need for scrollbars
 683         m_widget =
 684         m_text = gtk_entry_new();
 685
 686         if (style & wxNO_BORDER)
 687             g_object_set (m_text, "has-frame", FALSE, NULL);
 688
 689     }
 690
 691     m_parent->DoAddChild( this );
 692
 693     m_focusWidget = m_text;
 694
 695     PostCreation(size);
 696
 697     if (multi_line)
 698     {
 699         gtk_widget_show(m_text);
 700     }
 701
 702     // We want to be notified about text changes.
 703     if (multi_line)
 704     {
 705         g_signal_connect (m_buffer, "changed",
 706                           G_CALLBACK (gtk_text_changed_callback), this);
 707     }
 708     else
 709     {
 710         g_signal_connect (m_text, "changed",
 711                           G_CALLBACK (gtk_text_changed_callback), this);
 712     }
 713
 714     if (!value.empty())
 715     {
 716         SetValue( value );
 717     }
 718
 719     if (style & wxTE_PASSWORD)
 720         GTKSetVisibility();
 721
 722     if (style & wxTE_READONLY)
 723         GTKSetEditable();
 724
 725     // left justification (alignment) is the default anyhow
 726     if ( style & (wxTE_RIGHT | wxTE_CENTRE) )
 727         GTKSetJustification();
 728
 729     if (multi_line)
 730     {
 731         // Handle URLs on multi-line controls with wxTE_AUTO_URL style
 732         if (style & wxTE_AUTO_URL)
 733         {
 734             GtkTextIter start, end;
 735             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 736             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 737
 738             // We create our wxUrl tag here for slight efficiency gain - we
 739             // don't have to check for the tag existance in callbacks,
 740             // hereby it's guaranteed to exist.
 741             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 742                                        "foreground", "blue",
 743                                        "underline", PANGO_UNDERLINE_SINGLE,
 744                                        NULL);
 745
 746             // Check for URLs after each text change
 747             g_signal_connect_after (m_buffer, "insert_text",
 748                                     G_CALLBACK (au_insert_text_callback), this);
 749             g_signal_connect_after (m_buffer, "delete_range",
 750                                     G_CALLBACK (au_delete_range_callback), this);
 751
 752             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 753             // block this callback temporarily. This takes care of gtk+ internal
 754             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 755             // which is undesired because only a part of the URL might be copied.
 756             // The insert-text signal emitted inside it will take care of newly formed
 757             // or wholly copied URLs.
 758             g_signal_connect (m_buffer, "apply_tag",
 759                               G_CALLBACK (au_apply_tag_callback), NULL);
 760
 761             // Check for URLs in the initial string passed to Create
 762             gtk_text_buffer_get_start_iter(m_buffer, &start);
 763             gtk_text_buffer_get_end_iter(m_buffer, &end);
 764             au_check_range(&start, &end);
 765         }
 766     }
 767     else // single line
 768     {
 769         // do the right thing with Enter presses depending on whether we have
 770         // wxTE_PROCESS_ENTER or not
 771         GTKSetActivatesDefault();
 772     }
 773
 774
 775     g_signal_connect (m_text, "copy-clipboard",
 776                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 777     g_signal_connect (m_text, "cut-clipboard",
 778                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 779     g_signal_connect (m_text, "paste-clipboard",
 780                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 781
 782     m_cursor = wxCursor( wxCURSOR_IBEAM );
 783
 784     return true;
 785 }
 786
 787 GtkEditable *wxTextCtrl::GetEditable() const
 788 {
 789     wxCHECK_MSG( IsSingleLine(), NULL, "shouldn't be called for multiline" );
 790
 791     return GTK_EDITABLE(m_text);
 792 }
 793
 794 // ----------------------------------------------------------------------------
 795 // flags handling
 796 // ----------------------------------------------------------------------------
 797
 798 void wxTextCtrl::GTKSetEditable()
 799 {
 800     gboolean editable = !HasFlag(wxTE_READONLY);
 801     if ( IsSingleLine() )
 802         gtk_editable_set_editable(GTK_EDITABLE(m_text), editable);
 803     else
 804         gtk_text_view_set_editable(GTK_TEXT_VIEW(m_text), editable);
 805 }
 806
 807 void wxTextCtrl::GTKSetVisibility()
 808 {
 809     wxCHECK_RET( IsSingleLine(),
 810                  "wxTE_PASSWORD is for single line text controls only" );
 811
 812     gtk_entry_set_visibility(GTK_ENTRY(m_text), !HasFlag(wxTE_PASSWORD));
 813 }
 814
 815 void wxTextCtrl::GTKSetActivatesDefault()
 816 {
 817     wxCHECK_RET( IsSingleLine(),
 818                  "wxTE_PROCESS_ENTER is for single line text controls only" );
 819
 820     gtk_entry_set_activates_default(GTK_ENTRY(m_text),
 821                                     !HasFlag(wxTE_PROCESS_ENTER));
 822 }
 823
 824 void wxTextCtrl::GTKSetWrapMode()
 825 {
 826     // no wrapping in single line controls
 827     if ( !IsMultiLine() )
 828         return;
 829
 830     // translate wx wrapping style to GTK+
 831     GtkWrapMode wrap;
 832     if ( HasFlag( wxTE_DONTWRAP ) )
 833         wrap = GTK_WRAP_NONE;
 834     else if ( HasFlag( wxTE_CHARWRAP ) )
 835         wrap = GTK_WRAP_CHAR;
 836     else if ( HasFlag( wxTE_WORDWRAP ) )
 837         wrap = GTK_WRAP_WORD;
 838     else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 839         wrap = GTK_WRAP_WORD_CHAR;
 840
 841     gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 842 }
 843
 844 void wxTextCtrl::GTKSetJustification()
 845 {
 846     if ( IsMultiLine() )
 847     {
 848         GtkJustification just;
 849         if ( HasFlag(wxTE_RIGHT) )
 850             just = GTK_JUSTIFY_RIGHT;
 851         else if ( HasFlag(wxTE_CENTRE) )
 852             just = GTK_JUSTIFY_CENTER;
 853         else // wxTE_LEFT == 0
 854             just = GTK_JUSTIFY_LEFT;
 855
 856         gtk_text_view_set_justification(GTK_TEXT_VIEW(m_text), just);
 857     }
 858     else // single line
 859     {
 860         gfloat align;
 861         if ( HasFlag(wxTE_RIGHT) )
 862             align = 1.0;
 863         else if ( HasFlag(wxTE_CENTRE) )
 864             align = 0.5;
 865         else // single line
 866             align = 0.0;
 867
 868         gtk_entry_set_alignment(GTK_ENTRY(m_text), align);
 869     }
 870 }
 871
 872 void wxTextCtrl::SetWindowStyleFlag(long style)
 873 {
 874     long styleOld = GetWindowStyleFlag();
 875
 876     wxTextCtrlBase::SetWindowStyleFlag(style);
 877
 878     if ( (style & wxTE_READONLY) != (styleOld & wxTE_READONLY) )
 879         GTKSetEditable();
 880
 881     if ( (style & wxTE_PASSWORD) != (styleOld & wxTE_PASSWORD) )
 882         GTKSetVisibility();
 883
 884     if ( (style & wxTE_PROCESS_ENTER) != (styleOld & wxTE_PROCESS_ENTER) )
 885         GTKSetActivatesDefault();
 886
 887     static const long flagsWrap = wxTE_WORDWRAP | wxTE_CHARWRAP | wxTE_DONTWRAP;
 888     if ( (style & flagsWrap) != (styleOld & flagsWrap) )
 889         GTKSetWrapMode();
 890
 891     static const long flagsAlign = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 892     if ( (style & flagsAlign) != (styleOld & flagsAlign) )
 893         GTKSetJustification();
 894 }
 895
 896 // ----------------------------------------------------------------------------
 897 // control value
 898 // ----------------------------------------------------------------------------
 899
 900 wxString wxTextCtrl::GetValue() const
 901 {
 902     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 903
 904     if ( IsMultiLine() )
 905     {
 906         GtkTextIter start;
 907         gtk_text_buffer_get_start_iter( m_buffer, &start );
 908         GtkTextIter end;
 909         gtk_text_buffer_get_end_iter( m_buffer, &end );
 910         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 911
 912         return wxGTK_CONV_BACK(text);
 913     }
 914     else // single line
 915     {
 916         return wxTextEntry::GetValue();
 917     }
 918 }
 919
 920 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 921 {
 922     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 923     // encoding?
 924
 925     // first check the default text style (we intentionally don't check the
 926     // style for the current position as it doesn't make sense for SetValue())
 927     const wxTextAttr& style = GetDefaultStyle();
 928     wxFontEncoding enc = style.HasFontEncoding() ? style.GetFontEncoding()
 929                                          : wxFONTENCODING_SYSTEM;
 930
 931     // fall back to the controls font if no style
 932     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 933         enc = GetFont().GetEncoding();
 934
 935     return enc;
 936 }
 937
 938 bool wxTextCtrl::IsEmpty() const
 939 {
 940     if ( IsMultiLine() )
 941         return gtk_text_buffer_get_char_count(m_buffer) == 0;
 942
 943     return wxTextEntry::IsEmpty();
 944 }
 945
 946 void wxTextCtrl::DoSetValue( const wxString &value, int flags )
 947 {
 948     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 949
 950     m_modified = false;
 951
 952     if ( !IsMultiLine() )
 953     {
 954         wxTextEntry::DoSetValue(value, flags);
 955         return;
 956     }
 957
 958     if (value.IsEmpty())
 959     {
 960         if ( !(flags & SetValue_SendEvent) )
 961             EnableTextChangedEvents(false);
 962
 963         gtk_text_buffer_set_text( m_buffer, "", 0 );
 964
 965         if ( !(flags & SetValue_SendEvent) )
 966             EnableTextChangedEvents(true);
 967
 968         return;
 969     }
 970
 971     wxFontEncoding enc = m_defaultStyle.HasFont()
 972                             ? m_defaultStyle.GetFont().GetEncoding()
 973                             : wxFONTENCODING_SYSTEM;
 974     if ( enc == wxFONTENCODING_SYSTEM )
 975         enc = GetTextEncoding();
 976
 977     const wxCharBuffer buffer(wxGTK_CONV_ENC(value, enc));
 978     if ( !buffer )
 979     {
 980         // see comment in WriteText() as to why we must warn the user about
 981         // this
 982         wxLogWarning(_("Failed to set text in the text control."));
 983         return;
 984     }
 985
 986     if ( !(flags & SetValue_SendEvent) )
 987     {
 988         EnableTextChangedEvents(false);
 989     }
 990
 991     gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 992
 993     if ( !m_defaultStyle.IsDefault() )
 994     {
 995         GtkTextIter start, end;
 996         gtk_text_buffer_get_bounds( m_buffer, &start, &end );
 997         wxGtkTextApplyTagsFromAttr(m_widget, m_buffer, m_defaultStyle,
 998                                    &start, &end);
 999     }
1000
1001     if ( !(flags & SetValue_SendEvent) )
1002     {
1003         EnableTextChangedEvents(true);
1004     }
1005
1006     // This was added after discussion on the list
1007     SetInsertionPoint(0);
1008 }
1009
1010 void wxTextCtrl::WriteText( const wxString &text )
1011 {
1012     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1013
1014     // we're changing the text programmatically
1015     DontMarkDirtyOnNextChange();
1016
1017     if ( !IsMultiLine() )
1018     {
1019         wxTextEntry::WriteText(text);
1020         return;
1021     }
1022
1023     // check if we have a specific style for the current position
1024     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
1025     wxTextAttr style;
1026     if ( GetStyle(GetInsertionPoint(), style) && style.HasFontEncoding() )
1027     {
1028         enc = style.GetFontEncoding();
1029     }
1030
1031     if ( enc == wxFONTENCODING_SYSTEM )
1032         enc = GetTextEncoding();
1033
1034     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
1035     if ( !buffer )
1036     {
1037         // we must log an error here as losing the text like this can be a
1038         // serious problem (e.g. imagine the document edited by user being
1039         // empty instead of containing the correct text)
1040         wxLogWarning(_("Failed to insert text in the control."));
1041         return;
1042     }
1043
1044     // First remove the selection if there is one
1045     // TODO:  Is there an easier GTK specific way to do this?
1046     long from, to;
1047     GetSelection(&from, &to);
1048     if (from != to)
1049         Remove(from, to);
1050
1051     // Insert the text
1052     wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
1053
1054     GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
1055     // Scroll to cursor, but only if scrollbar thumb is at the very bottom
1056     // won't work when frozen, text view is not using m_buffer then
1057     if (!IsFrozen() && wxIsSameDouble(adj->value, adj->upper - adj->page_size))
1058     {
1059         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
1060                 gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
1061     }
1062 }
1063
1064 wxString wxTextCtrl::GetLineText( long lineNo ) const
1065 {
1066     wxString result;
1067     if ( IsMultiLine() )
1068     {
1069         GtkTextIter line;
1070         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
1071
1072         GtkTextIter end = line;
1073         // avoid skipping to the next line end if this one is empty
1074         if ( !gtk_text_iter_ends_line(&line) )
1075             gtk_text_iter_forward_to_line_end(&end);
1076
1077         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
1078         result = wxGTK_CONV_BACK(text);
1079     }
1080     else
1081     {
1082         if (lineNo == 0)
1083             result = GetValue();
1084     }
1085     return result;
1086 }
1087
1088 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
1089 {
1090   /* If you implement this, don't forget to update the documentation!
1091    * (file docs/latex/wx/text.tex) */
1092     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
1093 }
1094
1095 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
1096 {
1097     if ( IsMultiLine() )
1098     {
1099         GtkTextIter iter;
1100
1101         if (pos > GetLastPosition())
1102             return false;
1103
1104         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
1105
1106         if ( y )
1107             *y = gtk_text_iter_get_line(&iter);
1108         if ( x )
1109             *x = gtk_text_iter_get_line_offset(&iter);
1110     }
1111     else // single line control
1112     {
1113         if ( pos <= GTK_ENTRY(m_text)->text_length )
1114         {
1115             if ( y )
1116                 *y = 0;
1117             if ( x )
1118                 *x = pos;
1119         }
1120         else
1121         {
1122             // index out of bounds
1123             return false;
1124         }
1125     }
1126
1127     return true;
1128 }
1129
1130 long wxTextCtrl::XYToPosition(long x, long y ) const
1131 {
1132     if ( IsSingleLine() )
1133         return 0;
1134
1135     GtkTextIter iter;
1136     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1137         return -1;
1138
1139     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1140     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1141         return -1;
1142
1143     return gtk_text_iter_get_offset(&iter) + x;
1144 }
1145
1146 int wxTextCtrl::GetLineLength(long lineNo) const
1147 {
1148     if ( IsMultiLine() )
1149     {
1150         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1151         if (lineNo > last_line)
1152             return -1;
1153
1154         GtkTextIter iter;
1155         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1156         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1157         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1158     }
1159     else
1160     {
1161         wxString str = GetLineText (lineNo);
1162         return (int) str.length();
1163     }
1164 }
1165
1166 int wxTextCtrl::GetNumberOfLines() const
1167 {
1168     if ( IsMultiLine() )
1169     {
1170         return gtk_text_buffer_get_line_count( m_buffer );
1171     }
1172     else // single line
1173     {
1174         return 1;
1175     }
1176 }
1177
1178 void wxTextCtrl::SetInsertionPoint( long pos )
1179 {
1180     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1181
1182     if ( IsMultiLine() )
1183     {
1184         GtkTextIter iter;
1185         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1186         gtk_text_buffer_place_cursor( m_buffer, &iter );
1187         GtkTextMark* mark = gtk_text_buffer_get_insert(m_buffer);
1188         if (IsFrozen())
1189             // defer until Thaw, text view is not using m_buffer now
1190             m_showPositionOnThaw = mark;
1191         else
1192             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1193     }
1194     else // single line
1195     {
1196         wxTextEntry::SetInsertionPoint(pos);
1197     }
1198 }
1199
1200 void wxTextCtrl::SetEditable( bool editable )
1201 {
1202     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1203
1204     if ( IsMultiLine() )
1205     {
1206         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1207     }
1208     else // single line
1209     {
1210         wxTextEntry::SetEditable(editable);
1211     }
1212 }
1213
1214 bool wxTextCtrl::Enable( bool enable )
1215 {
1216     if (!wxWindowBase::Enable(enable))
1217     {
1218         // nothing to do
1219         return false;
1220     }
1221
1222     gtk_widget_set_sensitive( m_text, enable );
1223
1224     return true;
1225 }
1226
1227 // wxGTK-specific: called recursively by Enable,
1228 // to give widgets an opportunity to correct their colours after they
1229 // have been changed by Enable
1230 void wxTextCtrl::OnEnabled(bool WXUNUSED(enable))
1231 {
1232     // If we have a custom background colour, we use this colour in both
1233     // disabled and enabled mode, or we end up with a different colour under the
1234     // text.
1235     wxColour oldColour = GetBackgroundColour();
1236     if (oldColour.Ok())
1237     {
1238         // Need to set twice or it'll optimize the useful stuff out
1239         if (oldColour == * wxWHITE)
1240             SetBackgroundColour(*wxBLACK);
1241         else
1242             SetBackgroundColour(*wxWHITE);
1243         SetBackgroundColour(oldColour);
1244     }
1245 }
1246
1247 void wxTextCtrl::MarkDirty()
1248 {
1249     m_modified = true;
1250 }
1251
1252 void wxTextCtrl::DiscardEdits()
1253 {
1254     m_modified = false;
1255 }
1256
1257 // ----------------------------------------------------------------------------
1258 // event handling
1259 // ----------------------------------------------------------------------------
1260
1261 void wxTextCtrl::EnableTextChangedEvents(bool enable)
1262 {
1263     if ( enable )
1264     {
1265         g_signal_handlers_unblock_by_func(GetTextObject(),
1266             (gpointer)gtk_text_changed_callback, this);
1267     }
1268     else // disable events
1269     {
1270         g_signal_handlers_block_by_func(GetTextObject(),
1271             (gpointer)gtk_text_changed_callback, this);
1272     }
1273 }
1274
1275 bool wxTextCtrl::IgnoreTextUpdate()
1276 {
1277     if ( m_countUpdatesToIgnore > 0 )
1278     {
1279         m_countUpdatesToIgnore--;
1280
1281         return true;
1282     }
1283
1284     return false;
1285 }
1286
1287 bool wxTextCtrl::MarkDirtyOnChange()
1288 {
1289     if ( m_dontMarkDirty )
1290     {
1291         m_dontMarkDirty = false;
1292
1293         return false;
1294     }
1295
1296     return true;
1297 }
1298
1299 void wxTextCtrl::SetSelection( long from, long to )
1300 {
1301     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1302
1303     if (from == -1 && to == -1)
1304     {
1305         from = 0;
1306         to = GetValue().length();
1307     }
1308
1309     if ( IsMultiLine() )
1310     {
1311         GtkTextIter fromi, toi;
1312         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1313         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1314
1315         gtk_text_buffer_place_cursor( m_buffer, &toi );
1316         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1317     }
1318     else // single line
1319     {
1320         wxTextEntry::SetSelection(from, to);
1321     }
1322 }
1323
1324 void wxTextCtrl::ShowPosition( long pos )
1325 {
1326     if (IsMultiLine())
1327     {
1328         GtkTextIter iter;
1329         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, int(pos));
1330         GtkTextMark* mark = gtk_text_buffer_get_mark(m_buffer, "ShowPosition");
1331         gtk_text_buffer_move_mark(m_buffer, mark, &iter);
1332         if (IsFrozen())
1333             // defer until Thaw, text view is not using m_buffer now
1334             m_showPositionOnThaw = mark;
1335         else
1336             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1337     }
1338 }
1339
1340 wxTextCtrlHitTestResult
1341 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1342 {
1343     if ( !IsMultiLine() )
1344     {
1345         // not supported
1346         return wxTE_HT_UNKNOWN;
1347     }
1348
1349     int x, y;
1350     gtk_text_view_window_to_buffer_coords
1351     (
1352         GTK_TEXT_VIEW(m_text),
1353         GTK_TEXT_WINDOW_TEXT,
1354         pt.x, pt.y,
1355         &x, &y
1356     );
1357
1358     GtkTextIter iter;
1359     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1360     if ( pos )
1361         *pos = gtk_text_iter_get_offset(&iter);
1362
1363     return wxTE_HT_ON_TEXT;
1364 }
1365
1366 long wxTextCtrl::GetInsertionPoint() const
1367 {
1368     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1369
1370     if ( IsMultiLine() )
1371     {
1372         // There is no direct accessor for the cursor, but
1373         // internally, the cursor is the "mark" called
1374         // "insert" in the text view's btree structure.
1375
1376         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1377         GtkTextIter cursor;
1378         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1379
1380         return gtk_text_iter_get_offset( &cursor );
1381     }
1382     else
1383     {
1384         return wxTextEntry::GetInsertionPoint();
1385     }
1386 }
1387
1388 wxTextPos wxTextCtrl::GetLastPosition() const
1389 {
1390     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1391
1392     int pos = 0;
1393
1394     if ( IsMultiLine() )
1395     {
1396         GtkTextIter end;
1397         gtk_text_buffer_get_end_iter( m_buffer, &end );
1398
1399         pos = gtk_text_iter_get_offset( &end );
1400     }
1401     else // single line
1402     {
1403         pos = wxTextEntry::GetLastPosition();
1404     }
1405
1406     return (long)pos;
1407 }
1408
1409 void wxTextCtrl::Remove( long from, long to )
1410 {
1411     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1412
1413     if ( IsMultiLine() )
1414     {
1415         GtkTextIter fromi, toi;
1416         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1417         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1418
1419         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1420     }
1421     else // single line
1422     {
1423         wxTextEntry::Remove(from, to);
1424     }
1425 }
1426
1427 void wxTextCtrl::Cut()
1428 {
1429     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1430
1431     if ( IsMultiLine() )
1432         g_signal_emit_by_name (m_text, "cut-clipboard");
1433     else
1434         wxTextEntry::Cut();
1435 }
1436
1437 void wxTextCtrl::Copy()
1438 {
1439     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1440
1441     if ( IsMultiLine() )
1442         g_signal_emit_by_name (m_text, "copy-clipboard");
1443     else
1444         wxTextEntry::Copy();
1445 }
1446
1447 void wxTextCtrl::Paste()
1448 {
1449     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1450
1451     if ( IsMultiLine() )
1452         g_signal_emit_by_name (m_text, "paste-clipboard");
1453     else
1454         wxTextEntry::Paste();
1455 }
1456
1457 // If the return values from and to are the same, there is no
1458 // selection.
1459 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1460 {
1461     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1462
1463     if ( !IsMultiLine() )
1464     {
1465         wxTextEntry::GetSelection(fromOut, toOut);
1466         return;
1467     }
1468
1469     gint from, to;
1470
1471     GtkTextIter ifrom, ito;
1472     if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1473     {
1474         from = gtk_text_iter_get_offset(&ifrom);
1475         to = gtk_text_iter_get_offset(&ito);
1476
1477         if ( from > to )
1478         {
1479             // exchange them to be compatible with wxMSW
1480             gint tmp = from;
1481             from = to;
1482             to = tmp;
1483         }
1484     }
1485     else // no selection
1486     {
1487         from =
1488         to = GetInsertionPoint();
1489     }
1490
1491     if ( fromOut )
1492         *fromOut = from;
1493     if ( toOut )
1494         *toOut = to;
1495 }
1496
1497
1498 bool wxTextCtrl::IsEditable() const
1499 {
1500     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1501
1502     if ( IsMultiLine() )
1503     {
1504         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1505     }
1506     else
1507     {
1508         return wxTextEntry::IsEditable();
1509     }
1510 }
1511
1512 bool wxTextCtrl::IsModified() const
1513 {
1514     return m_modified;
1515 }
1516
1517 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1518 {
1519     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1520
1521     if ( key_event.GetKeyCode() == WXK_RETURN )
1522     {
1523         if ( HasFlag(wxTE_PROCESS_ENTER) )
1524         {
1525             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1526             event.SetEventObject(this);
1527             event.SetString(GetValue());
1528             if ( HandleWindowEvent(event) )
1529                 return;
1530         }
1531     }
1532
1533     key_event.Skip();
1534 }
1535
1536 GtkWidget* wxTextCtrl::GetConnectWidget()
1537 {
1538     return GTK_WIDGET(m_text);
1539 }
1540
1541 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1542 {
1543     if ( IsMultiLine() )
1544     {
1545         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1546                                         GTK_TEXT_WINDOW_TEXT );
1547     }
1548     else
1549     {
1550         return GTK_ENTRY(m_text)->text_area;
1551     }
1552 }
1553
1554 // the font will change for subsequent text insertiongs
1555 bool wxTextCtrl::SetFont( const wxFont &font )
1556 {
1557     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1558
1559     if ( !wxTextCtrlBase::SetFont(font) )
1560     {
1561         // font didn't change, nothing to do
1562         return false;
1563     }
1564
1565     if ( IsMultiLine() )
1566     {
1567         SetUpdateFont(true);
1568
1569         m_defaultStyle.SetFont(font);
1570
1571         ChangeFontGlobally();
1572     }
1573
1574     return true;
1575 }
1576
1577 void wxTextCtrl::ChangeFontGlobally()
1578 {
1579     // this method is very inefficient and hence should be called as rarely as
1580     // possible!
1581     //
1582     // TODO: it can be implemented much more efficiently for GTK2
1583     wxASSERT_MSG( IsMultiLine(),
1584                   _T("shouldn't be called for single line controls") );
1585
1586     wxString value = GetValue();
1587     if ( !value.empty() )
1588     {
1589         SetUpdateFont(false);
1590
1591         Clear();
1592         AppendText(value);
1593     }
1594 }
1595
1596 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1597 {
1598     if ( !wxControl::SetForegroundColour(colour) )
1599         return false;
1600
1601     // update default fg colour too
1602     m_defaultStyle.SetTextColour(colour);
1603
1604     return true;
1605 }
1606
1607 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1608 {
1609     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1610
1611     if ( !wxControl::SetBackgroundColour( colour ) )
1612         return false;
1613
1614     if (!m_backgroundColour.Ok())
1615         return false;
1616
1617     // change active background color too
1618     m_defaultStyle.SetBackgroundColour( colour );
1619
1620     return true;
1621 }
1622
1623 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1624 {
1625     if ( IsMultiLine() )
1626     {
1627         if ( style.IsDefault() )
1628         {
1629             // nothing to do
1630             return true;
1631         }
1632
1633         gint l = gtk_text_buffer_get_char_count( m_buffer );
1634
1635         wxCHECK_MSG( start >= 0 && end <= l, false,
1636                      _T("invalid range in wxTextCtrl::SetStyle") );
1637
1638         GtkTextIter starti, endi;
1639         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1640         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1641
1642         wxGtkTextApplyTagsFromAttr( m_widget, m_buffer, style, &starti, &endi );
1643
1644         return true;
1645     }
1646     //else: single line text controls don't support styles
1647
1648     return false;
1649 }
1650
1651 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1652 {
1653     gtk_widget_modify_style(m_text, style);
1654 }
1655
1656 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1657 {
1658     Cut();
1659 }
1660
1661 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1662 {
1663     Copy();
1664 }
1665
1666 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1667 {
1668     Paste();
1669 }
1670
1671 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1672 {
1673     Undo();
1674 }
1675
1676 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1677 {
1678     Redo();
1679 }
1680
1681 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1682 {
1683     event.Enable( CanCut() );
1684 }
1685
1686 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1687 {
1688     event.Enable( CanCopy() );
1689 }
1690
1691 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1692 {
1693     event.Enable( CanPaste() );
1694 }
1695
1696 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1697 {
1698     event.Enable( CanUndo() );
1699 }
1700
1701 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1702 {
1703     event.Enable( CanRedo() );
1704 }
1705
1706 wxSize wxTextCtrl::DoGetBestSize() const
1707 {
1708     // FIXME should be different for multi-line controls...
1709     wxSize ret( wxControl::DoGetBestSize() );
1710     wxSize best(80, ret.y);
1711     CacheBestSize(best);
1712     return best;
1713 }
1714
1715 // ----------------------------------------------------------------------------
1716 // freeze/thaw
1717 // ----------------------------------------------------------------------------
1718
1719 void wxTextCtrl::DoFreeze()
1720 {
1721     wxCHECK_RET(m_text != NULL, wxT("invalid text ctrl"));
1722
1723     wxWindow::DoFreeze();
1724
1725     if ( HasFlag(wxTE_MULTILINE) )
1726     {
1727         GTKFreezeWidget(m_text);
1728
1729         // removing buffer dramatically speeds up insertion:
1730         g_object_ref(m_buffer);
1731         GtkTextBuffer* buf_new = gtk_text_buffer_new(NULL);
1732         GtkTextMark* mark = GTK_TEXT_VIEW(m_text)->first_para_mark;
1733         gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), buf_new);
1734         // gtk_text_view_set_buffer adds its own reference
1735         g_object_unref(buf_new);
1736         // This mark should be deleted when the buffer is changed,
1737         // but it's not (in GTK+ up to at least 2.10.6).
1738         // Otherwise these anonymous marks start to build up in the buffer,
1739         // and Freeze takes longer and longer each time it is called.
1740         if (GTK_IS_TEXT_MARK(mark) && !gtk_text_mark_get_deleted(mark))
1741             gtk_text_buffer_delete_mark(m_buffer, mark);
1742     }
1743 }
1744
1745 void wxTextCtrl::DoThaw()
1746 {
1747     if ( HasFlag(wxTE_MULTILINE) )
1748     {
1749         // reattach buffer:
1750         gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1751         g_object_unref(m_buffer);
1752
1753         if (m_showPositionOnThaw != NULL)
1754         {
1755             gtk_text_view_scroll_mark_onscreen(
1756                 GTK_TEXT_VIEW(m_text), m_showPositionOnThaw);
1757             m_showPositionOnThaw = NULL;
1758         }
1759
1760         // and thaw the window
1761         GTKThawWidget(m_text);
1762     }
1763
1764     wxWindow::DoThaw();
1765 }
1766
1767 // ----------------------------------------------------------------------------
1768 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1769 // ----------------------------------------------------------------------------
1770
1771 // FIXME: when dragging on a link the sample gets an "Unknown event".
1772 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1773 // a buggy sample, or something else
1774 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1775 {
1776     event.Skip();
1777     if( !HasFlag(wxTE_AUTO_URL) )
1778         return;
1779
1780     gint x, y;
1781     GtkTextIter start, end;
1782     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1783                                                 "wxUrl");
1784
1785     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1786                                           event.GetX(), event.GetY(), &x, &y);
1787
1788     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1789     if (!gtk_text_iter_has_tag(&end, tag))
1790     {
1791         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1792                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1793         return;
1794     }
1795
1796     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1797                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1798
1799     start = end;
1800     if(!gtk_text_iter_begins_tag(&start, tag))
1801         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1802     if(!gtk_text_iter_ends_tag(&end, tag))
1803         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1804
1805     // Native context menu is probably not desired on an URL.
1806     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1807     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1808         event.Skip(false);
1809
1810     wxTextUrlEvent url_event(m_windowId, event,
1811                              gtk_text_iter_get_offset(&start),
1812                              gtk_text_iter_get_offset(&end));
1813
1814     InitCommandEvent(url_event);
1815     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1816     //event.Skip(!HandleWindowEvent(url_event));
1817     HandleWindowEvent(url_event);
1818 }
1819
1820 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
1821 {
1822     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
1823
1824     // GtkTextView starts a drag operation when left mouse button is pressed
1825     // and ends it when it is released and if it doesn't get the release event
1826     // the next click on a control results in an assertion failure inside
1827     // gtk_text_view_start_selection_drag() which simply *kills* the program
1828     // without anything we can do about it, so always let GTK+ have this event
1829     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
1830 }
1831
1832 // static
1833 wxVisualAttributes
1834 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1835 {
1836     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1837 }
1838
1839 #endif // wxUSE_TEXTCTRL