src/gtk/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin, 2005 Mart Raudsepp
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_TEXTCTRL
  14
  15 #include "wx/textctrl.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/intl.h"
  19     #include "wx/log.h"
  20     #include "wx/utils.h"
  21     #include "wx/settings.h"
  22     #include "wx/math.h"
  23 #endif
  24
  25 #include "wx/strconv.h"
  26 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  27
  28 #include <sys/types.h>
  29 #include <sys/stat.h>
  30 #include <ctype.h>
  31
  32 #include "wx/gtk/private.h"
  33
  34 // ----------------------------------------------------------------------------
  35 // helpers
  36 // ----------------------------------------------------------------------------
  37
  38 extern "C" {
  39 static void wxGtkOnRemoveTag(GtkTextBuffer *buffer,
  40                              GtkTextTag *tag,
  41                              GtkTextIter * WXUNUSED(start),
  42                              GtkTextIter * WXUNUSED(end),
  43                              char *prefix)
  44 {
  45     gchar *name;
  46     g_object_get (tag, "name", &name, NULL);
  47
  48     if (!name || strncmp(name, prefix, strlen(prefix)))
  49         // anonymous tag or not starting with prefix - don't remove
  50         g_signal_stop_emission_by_name (buffer, "remove_tag");
  51
  52     g_free(name);
  53 }
  54 }
  55
  56 // remove all tags starting with the given prefix from the start..end range
  57 static void
  58 wxGtkTextRemoveTagsWithPrefix(GtkTextBuffer *text_buffer,
  59                               const char *prefix,
  60                               GtkTextIter *start,
  61                               GtkTextIter *end)
  62 {
  63     gulong remove_handler_id = g_signal_connect
  64                                (
  65                                 text_buffer,
  66                                 "remove_tag",
  67                                 G_CALLBACK(wxGtkOnRemoveTag),
  68                                 gpointer(prefix)
  69                                );
  70     gtk_text_buffer_remove_all_tags(text_buffer, start, end);
  71     g_signal_handler_disconnect(text_buffer, remove_handler_id);
  72 }
  73
  74 static void wxGtkTextApplyTagsFromAttr(GtkWidget *text,
  75                                        GtkTextBuffer *text_buffer,
  76                                        const wxTextAttr& attr,
  77                                        GtkTextIter *start,
  78                                        GtkTextIter *end)
  79 {
  80     static gchar buf[1024];
  81     GtkTextTag *tag;
  82
  83     if (attr.HasFont())
  84     {
  85         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXFONT", start, end);
  86
  87         wxFont font(attr.GetFont());
  88
  89         PangoFontDescription *font_description = font.GetNativeFontInfo()->description;
  90         wxGtkString font_string(pango_font_description_to_string(font_description));
  91         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string.c_str());
  92         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  93                                          buf );
  94         if (!tag)
  95             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  96                                               "font-desc", font_description,
  97                                               NULL );
  98         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  99
 100         if (font.GetUnderlined())
 101         {
 102             g_snprintf(buf, sizeof(buf), "WXFONTUNDERLINE");
 103             tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 104                                              buf );
 105             if (!tag)
 106                 tag = gtk_text_buffer_create_tag( text_buffer, buf,
 107                                                   "underline-set", TRUE,
 108                                                   "underline", PANGO_UNDERLINE_SINGLE,
 109                                                   NULL );
 110             gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 111         }
 112     }
 113
 114     if (attr.HasTextColour())
 115     {
 116         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXFORECOLOR", start, end);
 117
 118         const GdkColor *colFg = attr.GetTextColour().GetColor();
 119         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
 120                    colFg->red, colFg->green, colFg->blue);
 121         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 122                                          buf );
 123         if (!tag)
 124             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 125                                               "foreground-gdk", colFg, NULL );
 126         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 127     }
 128
 129     if (attr.HasBackgroundColour())
 130     {
 131         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXBACKCOLOR", start, end);
 132
 133         const GdkColor *colBg = attr.GetBackgroundColour().GetColor();
 134         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
 135                    colBg->red, colBg->green, colBg->blue);
 136         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 137                                          buf );
 138         if (!tag)
 139             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 140                                               "background-gdk", colBg, NULL );
 141         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 142     }
 143
 144     if (attr.HasAlignment())
 145     {
 146         GtkTextIter para_start, para_end = *end;
 147         gtk_text_buffer_get_iter_at_line( text_buffer,
 148                                           &para_start,
 149                                           gtk_text_iter_get_line(start) );
 150         gtk_text_iter_forward_line(&para_end);
 151
 152         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXALIGNMENT", start, end);
 153
 154         GtkJustification align;
 155         switch (attr.GetAlignment())
 156         {
 157             default:
 158                 align = GTK_JUSTIFY_LEFT;
 159                 break;
 160             case wxTEXT_ALIGNMENT_RIGHT:
 161                 align = GTK_JUSTIFY_RIGHT;
 162                 break;
 163             case wxTEXT_ALIGNMENT_CENTER:
 164                 align = GTK_JUSTIFY_CENTER;
 165                 break;
 166 // gtk+ doesn't support justify before gtk+-2.11.0 with pango-1.17 being available
 167 // (but if new enough pango isn't available it's a mere gtk warning)
 168 #if GTK_CHECK_VERSION(2,11,0)
 169             case wxTEXT_ALIGNMENT_JUSTIFIED:
 170                 if (!gtk_check_version(2,11,0))
 171                     align = GTK_JUSTIFY_FILL;
 172                 else
 173                     align = GTK_JUSTIFY_LEFT;
 174                 break;
 175 #endif
 176         }
 177
 178         g_snprintf(buf, sizeof(buf), "WXALIGNMENT %d", align);
 179         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 180                                          buf );
 181         if (!tag)
 182             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 183                                               "justification", align, NULL );
 184         gtk_text_buffer_apply_tag( text_buffer, tag, &para_start, &para_end );
 185     }
 186
 187     if (attr.HasLeftIndent())
 188     {
 189         // Indentation attribute
 190
 191         // Clear old indentation tags
 192         GtkTextIter para_start, para_end = *end;
 193         gtk_text_buffer_get_iter_at_line( text_buffer,
 194                                           &para_start,
 195                                           gtk_text_iter_get_line(start) );
 196         gtk_text_iter_forward_line(&para_end);
 197
 198         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXINDENT", start, end);
 199
 200         // Convert indent from 1/10th of a mm into pixels
 201         float factor =
 202             (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 203                       gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 204
 205         const int indent = (int)(factor * attr.GetLeftIndent());
 206         const int subIndent = (int)(factor * attr.GetLeftSubIndent());
 207
 208         gint gindent;
 209         gint gsubindent;
 210
 211         if (subIndent >= 0)
 212         {
 213             gindent = indent;
 214             gsubindent = -subIndent;
 215         }
 216         else
 217         {
 218             gindent = -subIndent;
 219             gsubindent = indent;
 220         }
 221
 222         g_snprintf(buf, sizeof(buf), "WXINDENT %d %d", gindent, gsubindent);
 223         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 224                                         buf );
 225         if (!tag)
 226             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 227                                               "left-margin", gindent, "indent", gsubindent, NULL );
 228         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 229     }
 230
 231     if (attr.HasTabs())
 232     {
 233         // Set tab stops
 234
 235         // Clear old tabs
 236         GtkTextIter para_start, para_end = *end;
 237         gtk_text_buffer_get_iter_at_line( text_buffer,
 238                                           &para_start,
 239                                           gtk_text_iter_get_line(start) );
 240         gtk_text_iter_forward_line(&para_end);
 241
 242         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXTABS", start, end);
 243
 244         const wxArrayInt& tabs = attr.GetTabs();
 245
 246         wxString tagname = _T("WXTABS");
 247         g_snprintf(buf, sizeof(buf), "WXTABS");
 248         for (size_t i = 0; i < tabs.GetCount(); i++)
 249             tagname += wxString::Format(_T(" %d"), tabs[i]);
 250
 251         const wxWX2MBbuf buftag = tagname.utf8_str();
 252
 253         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 254                                         buftag );
 255         if (!tag)
 256         {
 257             // Factor to convert from 1/10th of a mm into pixels
 258             float factor =
 259                 (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 260                           gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 261
 262             PangoTabArray* tabArray = pango_tab_array_new(tabs.GetCount(), TRUE);
 263             for (size_t i = 0; i < tabs.GetCount(); i++)
 264                 pango_tab_array_set_tab(tabArray, i, PANGO_TAB_LEFT, (gint)(tabs[i] * factor));
 265             tag = gtk_text_buffer_create_tag( text_buffer, buftag,
 266                                               "tabs", tabArray, NULL );
 267             pango_tab_array_free(tabArray);
 268         }
 269         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 270     }
 271 }
 272
 273 static void wxGtkTextInsert(GtkWidget *text,
 274                             GtkTextBuffer *text_buffer,
 275                             const wxTextAttr& attr,
 276                             const wxCharBuffer& buffer)
 277
 278 {
 279     gint start_offset;
 280     GtkTextIter iter, start;
 281
 282     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 283                                      gtk_text_buffer_get_insert (text_buffer) );
 284     start_offset = gtk_text_iter_get_offset (&iter);
 285     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 286
 287     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 288
 289     wxGtkTextApplyTagsFromAttr(text, text_buffer, attr, &start, &iter);
 290 }
 291
 292 // Implementation of wxTE_AUTO_URL for wxGTK2 by Mart Raudsepp,
 293
 294 extern "C" {
 295 static void
 296 au_apply_tag_callback(GtkTextBuffer *buffer,
 297                       GtkTextTag *tag,
 298                       GtkTextIter * WXUNUSED(start),
 299                       GtkTextIter * WXUNUSED(end),
 300                       gpointer WXUNUSED(textctrl))
 301 {
 302     if(tag == gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl"))
 303         g_signal_stop_emission_by_name (buffer, "apply_tag");
 304 }
 305 }
 306
 307 //-----------------------------------------------------------------------------
 308 //  GtkTextCharPredicates for gtk_text_iter_*_find_char
 309 //-----------------------------------------------------------------------------
 310
 311 extern "C" {
 312 static gboolean
 313 pred_whitespace(gunichar ch, gpointer WXUNUSED(user_data))
 314 {
 315     return g_unichar_isspace(ch);
 316 }
 317 }
 318
 319 extern "C" {
 320 static gboolean
 321 pred_non_whitespace (gunichar ch, gpointer WXUNUSED(user_data))
 322 {
 323     return !g_unichar_isspace(ch);
 324 }
 325 }
 326
 327 extern "C" {
 328 static gboolean
 329 pred_nonpunct (gunichar ch, gpointer WXUNUSED(user_data))
 330 {
 331     return !g_unichar_ispunct(ch);
 332 }
 333 }
 334
 335 extern "C" {
 336 static gboolean
 337 pred_nonpunct_or_slash (gunichar ch, gpointer WXUNUSED(user_data))
 338 {
 339     return !g_unichar_ispunct(ch) || ch == '/';
 340 }
 341 }
 342
 343 //-----------------------------------------------------------------------------
 344 //  Check for links between s and e and correct tags as necessary
 345 //-----------------------------------------------------------------------------
 346
 347 // This function should be made match better while being efficient at one point.
 348 // Most probably with a row of regular expressions.
 349 extern "C" {
 350 static void
 351 au_check_word( GtkTextIter *s, GtkTextIter *e )
 352 {
 353     static const char *URIPrefixes[] =
 354     {
 355         "http://",
 356         "ftp://",
 357         "www.",
 358         "ftp.",
 359         "mailto://",
 360         "https://",
 361         "file://",
 362         "nntp://",
 363         "news://",
 364         "telnet://",
 365         "mms://",
 366         "gopher://",
 367         "prospero://",
 368         "wais://",
 369     };
 370
 371     GtkTextIter start = *s, end = *e;
 372     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 373
 374     // Get our special link tag
 375     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 376
 377     // Get rid of punctuation from beginning and end.
 378     // Might want to move this to au_check_range if an improved link checking doesn't
 379     // use some intelligent punctuation checking itself (beware of undesired iter modifications).
 380     if(g_unichar_ispunct( gtk_text_iter_get_char( &start ) ) )
 381         gtk_text_iter_forward_find_char( &start, pred_nonpunct, NULL, e );
 382
 383     gtk_text_iter_backward_find_char( &end, pred_nonpunct_or_slash, NULL, &start );
 384     gtk_text_iter_forward_char(&end);
 385
 386     wxGtkString text(gtk_text_iter_get_text( &start, &end ));
 387     size_t len = strlen(text), prefix_len;
 388     size_t n;
 389
 390     for( n = 0; n < WXSIZEOF(URIPrefixes); ++n )
 391     {
 392         prefix_len = strlen(URIPrefixes[n]);
 393         if((len > prefix_len) && !strncasecmp(text, URIPrefixes[n], prefix_len))
 394             break;
 395     }
 396
 397     if(n < WXSIZEOF(URIPrefixes))
 398     {
 399         gulong signal_id = g_signal_handler_find (buffer,
 400                                                   (GSignalMatchType) (G_SIGNAL_MATCH_FUNC),
 401                                                   0, 0, NULL,
 402                                                   (gpointer)au_apply_tag_callback, NULL);
 403
 404         g_signal_handler_block (buffer, signal_id);
 405         gtk_text_buffer_apply_tag(buffer, tag, &start, &end);
 406         g_signal_handler_unblock (buffer, signal_id);
 407     }
 408 }
 409 }
 410
 411 extern "C" {
 412 static void
 413 au_check_range(GtkTextIter *s,
 414                GtkTextIter *range_end)
 415 {
 416     GtkTextIter range_start = *s;
 417     GtkTextIter word_end;
 418     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 419     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 420
 421     gtk_text_buffer_remove_tag(buffer, tag, s, range_end);
 422
 423     if(g_unichar_isspace(gtk_text_iter_get_char(&range_start)))
 424         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 425
 426     while(!gtk_text_iter_equal(&range_start, range_end))
 427     {
 428         word_end = range_start;
 429         gtk_text_iter_forward_find_char(&word_end, pred_whitespace, NULL, range_end);
 430
 431         // Now we should have a word delimited by range_start and word_end, correct link tags
 432         au_check_word(&range_start, &word_end);
 433
 434         range_start = word_end;
 435         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 436     }
 437 }
 438 }
 439
 440 //-----------------------------------------------------------------------------
 441 //  "insert-text" for GtkTextBuffer
 442 //-----------------------------------------------------------------------------
 443
 444 extern "C" {
 445 static void
 446 au_insert_text_callback(GtkTextBuffer * WXUNUSED(buffer),
 447                         GtkTextIter *end,
 448                         gchar *text,
 449                         gint len,
 450                         wxTextCtrl *win)
 451 {
 452     if (!len || !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 453         return;
 454
 455     GtkTextIter start = *end;
 456     gtk_text_iter_backward_chars(&start, g_utf8_strlen(text, len));
 457
 458     GtkTextIter line_start = start;
 459     GtkTextIter line_end = *end;
 460     GtkTextIter words_start = start;
 461     GtkTextIter words_end = *end;
 462
 463     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(&start));
 464     gtk_text_iter_forward_to_line_end(&line_end);
 465     gtk_text_iter_backward_find_char(&words_start, pred_whitespace, NULL, &line_start);
 466     gtk_text_iter_forward_find_char(&words_end, pred_whitespace, NULL, &line_end);
 467
 468     au_check_range(&words_start, &words_end);
 469 }
 470 }
 471
 472 //-----------------------------------------------------------------------------
 473 //  "delete-range" for GtkTextBuffer
 474 //-----------------------------------------------------------------------------
 475
 476 extern "C" {
 477 static void
 478 au_delete_range_callback(GtkTextBuffer * WXUNUSED(buffer),
 479                          GtkTextIter *start,
 480                          GtkTextIter *end,
 481                          wxTextCtrl *win)
 482 {
 483     if( !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 484         return;
 485
 486     GtkTextIter line_start = *start, line_end = *end;
 487
 488     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(start));
 489     gtk_text_iter_forward_to_line_end(&line_end);
 490     gtk_text_iter_backward_find_char(start, pred_whitespace, NULL, &line_start);
 491     gtk_text_iter_forward_find_char(end, pred_whitespace, NULL, &line_end);
 492
 493     au_check_range(start, end);
 494 }
 495 }
 496
 497
 498 //-----------------------------------------------------------------------------
 499 //  "changed"
 500 //-----------------------------------------------------------------------------
 501
 502 extern "C" {
 503 static void
 504 gtk_text_changed_callback( GtkWidget * WXUNUSED(widget), wxTextCtrl *win )
 505 {
 506     if ( win->IgnoreTextUpdate() )
 507         return;
 508
 509     if (!win->m_hasVMT) return;
 510
 511     if ( win->MarkDirtyOnChange() )
 512         win->MarkDirty();
 513
 514     win->SendTextUpdatedEvent();
 515 }
 516 }
 517
 518 //-----------------------------------------------------------------------------
 519 //  clipboard events: "copy-clipboard", "cut-clipboard", "paste-clipboard"
 520 //-----------------------------------------------------------------------------
 521
 522 // common part of the event handlers below
 523 static void
 524 handle_text_clipboard_callback( GtkWidget *widget, wxTextCtrl *win,
 525                                 wxEventType eventType, const gchar * signal_name)
 526 {
 527     wxClipboardTextEvent event( eventType, win->GetId() );
 528     event.SetEventObject( win );
 529     if ( win->HandleWindowEvent( event ) )
 530     {
 531         // don't let the default processing to take place if we did something
 532         // ourselves in the event handler
 533         g_signal_stop_emission_by_name (widget, signal_name);
 534     }
 535 }
 536
 537 extern "C" {
 538 static void
 539 gtk_copy_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 540 {
 541     handle_text_clipboard_callback(
 542         widget, win, wxEVT_COMMAND_TEXT_COPY, "copy-clipboard" );
 543 }
 544
 545 static void
 546 gtk_cut_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 547 {
 548     handle_text_clipboard_callback(
 549         widget, win, wxEVT_COMMAND_TEXT_CUT, "cut-clipboard" );
 550 }
 551
 552 static void
 553 gtk_paste_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 554 {
 555     handle_text_clipboard_callback(
 556         widget, win, wxEVT_COMMAND_TEXT_PASTE, "paste-clipboard" );
 557 }
 558 }
 559
 560 //-----------------------------------------------------------------------------
 561 // "expose_event" from scrolled window and textview
 562 //-----------------------------------------------------------------------------
 563
 564 extern "C" {
 565 static gboolean
 566 gtk_text_exposed_callback( GtkWidget * WXUNUSED(widget),
 567                            GdkEventExpose * WXUNUSED(event),
 568                            wxTextCtrl * WXUNUSED(win) )
 569 {
 570     return TRUE;
 571 }
 572 }
 573
 574
 575 //-----------------------------------------------------------------------------
 576 //  wxTextCtrl
 577 //-----------------------------------------------------------------------------
 578
 579 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 580
 581 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 582     EVT_CHAR(wxTextCtrl::OnChar)
 583
 584     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 585     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 586     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 587     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 588     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 589
 590     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 591     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 592     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 593     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 594     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 595
 596     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 597     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 598     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 599     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 600     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 601     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 602     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 603     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 604     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 605 END_EVENT_TABLE()
 606
 607 void wxTextCtrl::Init()
 608 {
 609     m_dontMarkDirty =
 610     m_modified = false;
 611
 612     m_countUpdatesToIgnore = 0;
 613
 614     SetUpdateFont(false);
 615
 616     m_text = NULL;
 617     m_freezeCount = 0;
 618     m_showPositionOnThaw = NULL;
 619     m_gdkHandCursor = NULL;
 620     m_gdkXTermCursor = NULL;
 621 }
 622
 623 wxTextCtrl::~wxTextCtrl()
 624 {
 625     if(m_gdkHandCursor)
 626         gdk_cursor_unref(m_gdkHandCursor);
 627     if(m_gdkXTermCursor)
 628         gdk_cursor_unref(m_gdkXTermCursor);
 629 }
 630
 631 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 632                         wxWindowID id,
 633                         const wxString &value,
 634                         const wxPoint &pos,
 635                         const wxSize &size,
 636                         long style,
 637                         const wxValidator& validator,
 638                         const wxString &name )
 639 {
 640     Init();
 641
 642     Create( parent, id, value, pos, size, style, validator, name );
 643 }
 644
 645 bool wxTextCtrl::Create( wxWindow *parent,
 646                          wxWindowID id,
 647                          const wxString &value,
 648                          const wxPoint &pos,
 649                          const wxSize &size,
 650                          long style,
 651                          const wxValidator& validator,
 652                          const wxString &name )
 653 {
 654     if (!PreCreation( parent, pos, size ) ||
 655         !CreateBase( parent, id, pos, size, style, validator, name ))
 656     {
 657         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 658         return false;
 659     }
 660
 661     bool multi_line = (style & wxTE_MULTILINE) != 0;
 662
 663     if (multi_line)
 664     {
 665         // Create view
 666         m_text = gtk_text_view_new();
 667
 668         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 669
 670         // create "ShowPosition" marker
 671         GtkTextIter iter;
 672         gtk_text_buffer_get_start_iter(m_buffer, &iter);
 673         gtk_text_buffer_create_mark(m_buffer, "ShowPosition", &iter, true);
 674
 675         // create scrolled window
 676         m_widget = gtk_scrolled_window_new( NULL, NULL );
 677         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 678                                         GTK_POLICY_AUTOMATIC,
 679                                         style & wxTE_NO_VSCROLL
 680                                             ? GTK_POLICY_NEVER
 681                                             : GTK_POLICY_AUTOMATIC );
 682         // for ScrollLines/Pages
 683         m_scrollBar[1] = (GtkRange*)((GtkScrolledWindow*)m_widget)->vscrollbar;
 684
 685         // Insert view into scrolled window
 686         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 687
 688         GTKSetWrapMode();
 689
 690         GtkScrolledWindowSetBorder(m_widget, style);
 691
 692         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 693
 694         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 695     }
 696     else
 697     {
 698         // a single-line text control: no need for scrollbars
 699         m_widget =
 700         m_text = gtk_entry_new();
 701
 702         if (style & wxNO_BORDER)
 703             g_object_set (m_text, "has-frame", FALSE, NULL);
 704
 705     }
 706
 707     m_parent->DoAddChild( this );
 708
 709     m_focusWidget = m_text;
 710
 711     PostCreation(size);
 712
 713     if (multi_line)
 714     {
 715         gtk_widget_show(m_text);
 716     }
 717
 718     // We want to be notified about text changes.
 719     if (multi_line)
 720     {
 721         g_signal_connect (m_buffer, "changed",
 722                           G_CALLBACK (gtk_text_changed_callback), this);
 723     }
 724     else
 725     {
 726         g_signal_connect (m_text, "changed",
 727                           G_CALLBACK (gtk_text_changed_callback), this);
 728     }
 729
 730     if (!value.empty())
 731     {
 732         SetValue( value );
 733     }
 734
 735     if (style & wxTE_PASSWORD)
 736         GTKSetVisibility();
 737
 738     if (style & wxTE_READONLY)
 739         GTKSetEditable();
 740
 741     // left justification (alignment) is the default anyhow
 742     if ( style & (wxTE_RIGHT | wxTE_CENTRE) )
 743         GTKSetJustification();
 744
 745     if (multi_line)
 746     {
 747         // Handle URLs on multi-line controls with wxTE_AUTO_URL style
 748         if (style & wxTE_AUTO_URL)
 749         {
 750             GtkTextIter start, end;
 751             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 752             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 753
 754             // We create our wxUrl tag here for slight efficiency gain - we
 755             // don't have to check for the tag existance in callbacks,
 756             // hereby it's guaranteed to exist.
 757             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 758                                        "foreground", "blue",
 759                                        "underline", PANGO_UNDERLINE_SINGLE,
 760                                        NULL);
 761
 762             // Check for URLs after each text change
 763             g_signal_connect_after (m_buffer, "insert_text",
 764                                     G_CALLBACK (au_insert_text_callback), this);
 765             g_signal_connect_after (m_buffer, "delete_range",
 766                                     G_CALLBACK (au_delete_range_callback), this);
 767
 768             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 769             // block this callback temporarily. This takes care of gtk+ internal
 770             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 771             // which is undesired because only a part of the URL might be copied.
 772             // The insert-text signal emitted inside it will take care of newly formed
 773             // or wholly copied URLs.
 774             g_signal_connect (m_buffer, "apply_tag",
 775                               G_CALLBACK (au_apply_tag_callback), NULL);
 776
 777             // Check for URLs in the initial string passed to Create
 778             gtk_text_buffer_get_start_iter(m_buffer, &start);
 779             gtk_text_buffer_get_end_iter(m_buffer, &end);
 780             au_check_range(&start, &end);
 781         }
 782     }
 783     else // single line
 784     {
 785         // do the right thing with Enter presses depending on whether we have
 786         // wxTE_PROCESS_ENTER or not
 787         GTKSetActivatesDefault();
 788     }
 789
 790
 791     g_signal_connect (m_text, "copy-clipboard",
 792                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 793     g_signal_connect (m_text, "cut-clipboard",
 794                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 795     g_signal_connect (m_text, "paste-clipboard",
 796                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 797
 798     m_cursor = wxCursor( wxCURSOR_IBEAM );
 799
 800     return true;
 801 }
 802
 803 GtkEditable *wxTextCtrl::GetEditable() const
 804 {
 805     wxCHECK_MSG( IsSingleLine(), NULL, "shouldn't be called for multiline" );
 806
 807     return GTK_EDITABLE(m_text);
 808 }
 809
 810 // ----------------------------------------------------------------------------
 811 // flags handling
 812 // ----------------------------------------------------------------------------
 813
 814 void wxTextCtrl::GTKSetEditable()
 815 {
 816     gboolean editable = !HasFlag(wxTE_READONLY);
 817     if ( IsSingleLine() )
 818         gtk_editable_set_editable(GTK_EDITABLE(m_text), editable);
 819     else
 820         gtk_text_view_set_editable(GTK_TEXT_VIEW(m_text), editable);
 821 }
 822
 823 void wxTextCtrl::GTKSetVisibility()
 824 {
 825     wxCHECK_RET( IsSingleLine(),
 826                  "wxTE_PASSWORD is for single line text controls only" );
 827
 828     gtk_entry_set_visibility(GTK_ENTRY(m_text), !HasFlag(wxTE_PASSWORD));
 829 }
 830
 831 void wxTextCtrl::GTKSetActivatesDefault()
 832 {
 833     wxCHECK_RET( IsSingleLine(),
 834                  "wxTE_PROCESS_ENTER is for single line text controls only" );
 835
 836     gtk_entry_set_activates_default(GTK_ENTRY(m_text),
 837                                     !HasFlag(wxTE_PROCESS_ENTER));
 838 }
 839
 840 void wxTextCtrl::GTKSetWrapMode()
 841 {
 842     // no wrapping in single line controls
 843     if ( !IsMultiLine() )
 844         return;
 845
 846     // translate wx wrapping style to GTK+
 847     GtkWrapMode wrap;
 848     if ( HasFlag( wxTE_DONTWRAP ) )
 849         wrap = GTK_WRAP_NONE;
 850     else if ( HasFlag( wxTE_CHARWRAP ) )
 851         wrap = GTK_WRAP_CHAR;
 852     else if ( HasFlag( wxTE_WORDWRAP ) )
 853         wrap = GTK_WRAP_WORD;
 854     else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 855         wrap = GTK_WRAP_WORD_CHAR;
 856
 857     gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 858 }
 859
 860 void wxTextCtrl::GTKSetJustification()
 861 {
 862     if ( IsMultiLine() )
 863     {
 864         GtkJustification just;
 865         if ( HasFlag(wxTE_RIGHT) )
 866             just = GTK_JUSTIFY_RIGHT;
 867         else if ( HasFlag(wxTE_CENTRE) )
 868             just = GTK_JUSTIFY_CENTER;
 869         else // wxTE_LEFT == 0
 870             just = GTK_JUSTIFY_LEFT;
 871
 872         gtk_text_view_set_justification(GTK_TEXT_VIEW(m_text), just);
 873     }
 874     else // single line
 875     {
 876         gfloat align;
 877         if ( HasFlag(wxTE_RIGHT) )
 878             align = 1.0;
 879         else if ( HasFlag(wxTE_CENTRE) )
 880             align = 0.5;
 881         else // single line
 882             align = 0.0;
 883
 884         gtk_entry_set_alignment(GTK_ENTRY(m_text), align);
 885     }
 886 }
 887
 888 void wxTextCtrl::SetWindowStyleFlag(long style)
 889 {
 890     long styleOld = GetWindowStyleFlag();
 891
 892     wxTextCtrlBase::SetWindowStyleFlag(style);
 893
 894     if ( (style & wxTE_READONLY) != (styleOld & wxTE_READONLY) )
 895         GTKSetEditable();
 896
 897     if ( (style & wxTE_PASSWORD) != (styleOld & wxTE_PASSWORD) )
 898         GTKSetVisibility();
 899
 900     if ( (style & wxTE_PROCESS_ENTER) != (styleOld & wxTE_PROCESS_ENTER) )
 901         GTKSetActivatesDefault();
 902
 903     static const long flagsWrap = wxTE_WORDWRAP | wxTE_CHARWRAP | wxTE_DONTWRAP;
 904     if ( (style & flagsWrap) != (styleOld & flagsWrap) )
 905         GTKSetWrapMode();
 906
 907     static const long flagsAlign = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 908     if ( (style & flagsAlign) != (styleOld & flagsAlign) )
 909         GTKSetJustification();
 910 }
 911
 912 // ----------------------------------------------------------------------------
 913 // control value
 914 // ----------------------------------------------------------------------------
 915
 916 wxString wxTextCtrl::GetValue() const
 917 {
 918     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 919
 920     if ( IsMultiLine() )
 921     {
 922         GtkTextIter start;
 923         gtk_text_buffer_get_start_iter( m_buffer, &start );
 924         GtkTextIter end;
 925         gtk_text_buffer_get_end_iter( m_buffer, &end );
 926         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 927
 928         return wxGTK_CONV_BACK(text);
 929     }
 930     else // single line
 931     {
 932         return wxTextEntry::GetValue();
 933     }
 934 }
 935
 936 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 937 {
 938     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 939     // encoding?
 940
 941     // first check the default text style (we intentionally don't check the
 942     // style for the current position as it doesn't make sense for SetValue())
 943     const wxTextAttr& style = GetDefaultStyle();
 944     wxFontEncoding enc = style.HasFontEncoding() ? style.GetFontEncoding()
 945                                          : wxFONTENCODING_SYSTEM;
 946
 947     // fall back to the controls font if no style
 948     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 949         enc = GetFont().GetEncoding();
 950
 951     return enc;
 952 }
 953
 954 bool wxTextCtrl::IsEmpty() const
 955 {
 956     if ( IsMultiLine() )
 957         return gtk_text_buffer_get_char_count(m_buffer) == 0;
 958
 959     return wxTextEntry::IsEmpty();
 960 }
 961
 962 void wxTextCtrl::DoSetValue( const wxString &value, int flags )
 963 {
 964     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 965
 966     m_modified = false;
 967
 968     if ( !IsMultiLine() )
 969     {
 970         wxTextEntry::DoSetValue(value, flags);
 971         return;
 972     }
 973
 974     wxFontEncoding enc = m_defaultStyle.HasFont()
 975                             ? m_defaultStyle.GetFont().GetEncoding()
 976                             : wxFONTENCODING_SYSTEM;
 977     if ( enc == wxFONTENCODING_SYSTEM )
 978         enc = GetTextEncoding();
 979
 980     const wxCharBuffer buffer(wxGTK_CONV_ENC(value, enc));
 981     if ( !buffer )
 982     {
 983         // see comment in WriteText() as to why we must warn the user about
 984         // this
 985         wxLogWarning(_("Failed to set text in the text control."));
 986         return;
 987     }
 988
 989     if ( !(flags & SetValue_SendEvent) )
 990     {
 991         EnableTextChangedEvents(false);
 992     }
 993
 994     gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 995
 996     if ( !m_defaultStyle.IsDefault() )
 997     {
 998         GtkTextIter start, end;
 999         gtk_text_buffer_get_bounds( m_buffer, &start, &end );
1000         wxGtkTextApplyTagsFromAttr(m_widget, m_buffer, m_defaultStyle,
1001                                    &start, &end);
1002     }
1003
1004     if ( !(flags & SetValue_SendEvent) )
1005     {
1006         EnableTextChangedEvents(true);
1007     }
1008
1009     // This was added after discussion on the list
1010     SetInsertionPoint(0);
1011 }
1012
1013 void wxTextCtrl::WriteText( const wxString &text )
1014 {
1015     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1016
1017     // we're changing the text programmatically
1018     DontMarkDirtyOnNextChange();
1019
1020     if ( !IsMultiLine() )
1021     {
1022         wxTextEntry::WriteText(text);
1023         return;
1024     }
1025
1026     // check if we have a specific style for the current position
1027     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
1028     wxTextAttr style;
1029     if ( GetStyle(GetInsertionPoint(), style) && style.HasFontEncoding() )
1030     {
1031         enc = style.GetFontEncoding();
1032     }
1033
1034     if ( enc == wxFONTENCODING_SYSTEM )
1035         enc = GetTextEncoding();
1036
1037     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
1038     if ( !buffer )
1039     {
1040         // we must log an error here as losing the text like this can be a
1041         // serious problem (e.g. imagine the document edited by user being
1042         // empty instead of containing the correct text)
1043         wxLogWarning(_("Failed to insert text in the control."));
1044         return;
1045     }
1046
1047     // First remove the selection if there is one
1048     // TODO:  Is there an easier GTK specific way to do this?
1049     long from, to;
1050     GetSelection(&from, &to);
1051     if (from != to)
1052         Remove(from, to);
1053
1054     // Insert the text
1055     wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
1056
1057     GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
1058     // Scroll to cursor, but only if scrollbar thumb is at the very bottom
1059     // won't work when frozen, text view is not using m_buffer then
1060     if (!IsFrozen() && wxIsSameDouble(adj->value, adj->upper - adj->page_size))
1061     {
1062         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
1063                 gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
1064     }
1065 }
1066
1067 wxString wxTextCtrl::GetLineText( long lineNo ) const
1068 {
1069     wxString result;
1070     if ( IsMultiLine() )
1071     {
1072         GtkTextIter line;
1073         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
1074
1075         GtkTextIter end = line;
1076         // avoid skipping to the next line end if this one is empty
1077         if ( !gtk_text_iter_ends_line(&line) )
1078             gtk_text_iter_forward_to_line_end(&end);
1079
1080         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
1081         result = wxGTK_CONV_BACK(text);
1082     }
1083     else
1084     {
1085         if (lineNo == 0)
1086             result = GetValue();
1087     }
1088     return result;
1089 }
1090
1091 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
1092 {
1093   /* If you implement this, don't forget to update the documentation!
1094    * (file docs/latex/wx/text.tex) */
1095     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
1096 }
1097
1098 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
1099 {
1100     if ( IsMultiLine() )
1101     {
1102         GtkTextIter iter;
1103
1104         if (pos > GetLastPosition())
1105             return false;
1106
1107         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
1108
1109         if ( y )
1110             *y = gtk_text_iter_get_line(&iter);
1111         if ( x )
1112             *x = gtk_text_iter_get_line_offset(&iter);
1113     }
1114     else // single line control
1115     {
1116         if ( pos <= GTK_ENTRY(m_text)->text_length )
1117         {
1118             if ( y )
1119                 *y = 0;
1120             if ( x )
1121                 *x = pos;
1122         }
1123         else
1124         {
1125             // index out of bounds
1126             return false;
1127         }
1128     }
1129
1130     return true;
1131 }
1132
1133 long wxTextCtrl::XYToPosition(long x, long y ) const
1134 {
1135     if ( IsSingleLine() )
1136         return 0;
1137
1138     GtkTextIter iter;
1139     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1140         return -1;
1141
1142     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1143     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1144         return -1;
1145
1146     return gtk_text_iter_get_offset(&iter) + x;
1147 }
1148
1149 int wxTextCtrl::GetLineLength(long lineNo) const
1150 {
1151     if ( IsMultiLine() )
1152     {
1153         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1154         if (lineNo > last_line)
1155             return -1;
1156
1157         GtkTextIter iter;
1158         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1159         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1160         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1161     }
1162     else
1163     {
1164         wxString str = GetLineText (lineNo);
1165         return (int) str.length();
1166     }
1167 }
1168
1169 int wxTextCtrl::GetNumberOfLines() const
1170 {
1171     if ( IsMultiLine() )
1172     {
1173         return gtk_text_buffer_get_line_count( m_buffer );
1174     }
1175     else // single line
1176     {
1177         return 1;
1178     }
1179 }
1180
1181 void wxTextCtrl::SetInsertionPoint( long pos )
1182 {
1183     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1184
1185     if ( IsMultiLine() )
1186     {
1187         GtkTextIter iter;
1188         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1189         gtk_text_buffer_place_cursor( m_buffer, &iter );
1190         GtkTextMark* mark = gtk_text_buffer_get_insert(m_buffer);
1191         if (IsFrozen())
1192             // defer until Thaw, text view is not using m_buffer now
1193             m_showPositionOnThaw = mark;
1194         else
1195             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1196     }
1197     else // single line
1198     {
1199         wxTextEntry::SetInsertionPoint(pos);
1200     }
1201 }
1202
1203 void wxTextCtrl::SetEditable( bool editable )
1204 {
1205     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1206
1207     if ( IsMultiLine() )
1208     {
1209         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1210     }
1211     else // single line
1212     {
1213         wxTextEntry::SetEditable(editable);
1214     }
1215 }
1216
1217 bool wxTextCtrl::Enable( bool enable )
1218 {
1219     if (!wxWindowBase::Enable(enable))
1220     {
1221         // nothing to do
1222         return false;
1223     }
1224
1225     gtk_widget_set_sensitive( m_text, enable );
1226
1227     return true;
1228 }
1229
1230 // wxGTK-specific: called recursively by Enable,
1231 // to give widgets an opportunity to correct their colours after they
1232 // have been changed by Enable
1233 void wxTextCtrl::OnEnabled(bool WXUNUSED(enable))
1234 {
1235     // If we have a custom background colour, we use this colour in both
1236     // disabled and enabled mode, or we end up with a different colour under the
1237     // text.
1238     wxColour oldColour = GetBackgroundColour();
1239     if (oldColour.Ok())
1240     {
1241         // Need to set twice or it'll optimize the useful stuff out
1242         if (oldColour == * wxWHITE)
1243             SetBackgroundColour(*wxBLACK);
1244         else
1245             SetBackgroundColour(*wxWHITE);
1246         SetBackgroundColour(oldColour);
1247     }
1248 }
1249
1250 void wxTextCtrl::MarkDirty()
1251 {
1252     m_modified = true;
1253 }
1254
1255 void wxTextCtrl::DiscardEdits()
1256 {
1257     m_modified = false;
1258 }
1259
1260 // ----------------------------------------------------------------------------
1261 // event handling
1262 // ----------------------------------------------------------------------------
1263
1264 void wxTextCtrl::EnableTextChangedEvents(bool enable)
1265 {
1266     if ( enable )
1267     {
1268         g_signal_handlers_unblock_by_func(GetTextObject(),
1269             (gpointer)gtk_text_changed_callback, this);
1270     }
1271     else // disable events
1272     {
1273         g_signal_handlers_block_by_func(GetTextObject(),
1274             (gpointer)gtk_text_changed_callback, this);
1275     }
1276 }
1277
1278 bool wxTextCtrl::IgnoreTextUpdate()
1279 {
1280     if ( m_countUpdatesToIgnore > 0 )
1281     {
1282         m_countUpdatesToIgnore--;
1283
1284         return true;
1285     }
1286
1287     return false;
1288 }
1289
1290 bool wxTextCtrl::MarkDirtyOnChange()
1291 {
1292     if ( m_dontMarkDirty )
1293     {
1294         m_dontMarkDirty = false;
1295
1296         return false;
1297     }
1298
1299     return true;
1300 }
1301
1302 void wxTextCtrl::SetSelection( long from, long to )
1303 {
1304     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1305
1306     if (from == -1 && to == -1)
1307     {
1308         from = 0;
1309         to = GetValue().length();
1310     }
1311
1312     if ( IsMultiLine() )
1313     {
1314         GtkTextIter fromi, toi;
1315         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1316         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1317
1318         gtk_text_buffer_place_cursor( m_buffer, &toi );
1319         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1320     }
1321     else // single line
1322     {
1323         wxTextEntry::SetSelection(from, to);
1324     }
1325 }
1326
1327 void wxTextCtrl::ShowPosition( long pos )
1328 {
1329     if (IsMultiLine())
1330     {
1331         GtkTextIter iter;
1332         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, int(pos));
1333         GtkTextMark* mark = gtk_text_buffer_get_mark(m_buffer, "ShowPosition");
1334         gtk_text_buffer_move_mark(m_buffer, mark, &iter);
1335         if (IsFrozen())
1336             // defer until Thaw, text view is not using m_buffer now
1337             m_showPositionOnThaw = mark;
1338         else
1339             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1340     }
1341 }
1342
1343 wxTextCtrlHitTestResult
1344 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1345 {
1346     if ( !IsMultiLine() )
1347     {
1348         // not supported
1349         return wxTE_HT_UNKNOWN;
1350     }
1351
1352     int x, y;
1353     gtk_text_view_window_to_buffer_coords
1354     (
1355         GTK_TEXT_VIEW(m_text),
1356         GTK_TEXT_WINDOW_TEXT,
1357         pt.x, pt.y,
1358         &x, &y
1359     );
1360
1361     GtkTextIter iter;
1362     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1363     if ( pos )
1364         *pos = gtk_text_iter_get_offset(&iter);
1365
1366     return wxTE_HT_ON_TEXT;
1367 }
1368
1369 long wxTextCtrl::GetInsertionPoint() const
1370 {
1371     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1372
1373     if ( IsMultiLine() )
1374     {
1375         // There is no direct accessor for the cursor, but
1376         // internally, the cursor is the "mark" called
1377         // "insert" in the text view's btree structure.
1378
1379         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1380         GtkTextIter cursor;
1381         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1382
1383         return gtk_text_iter_get_offset( &cursor );
1384     }
1385     else
1386     {
1387         return wxTextEntry::GetInsertionPoint();
1388     }
1389 }
1390
1391 wxTextPos wxTextCtrl::GetLastPosition() const
1392 {
1393     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1394
1395     int pos = 0;
1396
1397     if ( IsMultiLine() )
1398     {
1399         GtkTextIter end;
1400         gtk_text_buffer_get_end_iter( m_buffer, &end );
1401
1402         pos = gtk_text_iter_get_offset( &end );
1403     }
1404     else // single line
1405     {
1406         pos = wxTextEntry::GetLastPosition();
1407     }
1408
1409     return (long)pos;
1410 }
1411
1412 void wxTextCtrl::Remove( long from, long to )
1413 {
1414     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1415
1416     if ( IsMultiLine() )
1417     {
1418         GtkTextIter fromi, toi;
1419         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1420         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1421
1422         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1423     }
1424     else // single line
1425     {
1426         wxTextEntry::Remove(from, to);
1427     }
1428 }
1429
1430 void wxTextCtrl::Cut()
1431 {
1432     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1433
1434     if ( IsMultiLine() )
1435         g_signal_emit_by_name (m_text, "cut-clipboard");
1436     else
1437         wxTextEntry::Cut();
1438 }
1439
1440 void wxTextCtrl::Copy()
1441 {
1442     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1443
1444     if ( IsMultiLine() )
1445         g_signal_emit_by_name (m_text, "copy-clipboard");
1446     else
1447         wxTextEntry::Copy();
1448 }
1449
1450 void wxTextCtrl::Paste()
1451 {
1452     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1453
1454     if ( IsMultiLine() )
1455         g_signal_emit_by_name (m_text, "paste-clipboard");
1456     else
1457         wxTextEntry::Paste();
1458 }
1459
1460 // If the return values from and to are the same, there is no
1461 // selection.
1462 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1463 {
1464     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1465
1466     if ( !IsMultiLine() )
1467     {
1468         wxTextEntry::GetSelection(fromOut, toOut);
1469         return;
1470     }
1471
1472     gint from, to;
1473
1474     GtkTextIter ifrom, ito;
1475     if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1476     {
1477         from = gtk_text_iter_get_offset(&ifrom);
1478         to = gtk_text_iter_get_offset(&ito);
1479
1480         if ( from > to )
1481         {
1482             // exchange them to be compatible with wxMSW
1483             gint tmp = from;
1484             from = to;
1485             to = tmp;
1486         }
1487     }
1488     else // no selection
1489     {
1490         from =
1491         to = GetInsertionPoint();
1492     }
1493
1494     if ( fromOut )
1495         *fromOut = from;
1496     if ( toOut )
1497         *toOut = to;
1498 }
1499
1500
1501 bool wxTextCtrl::IsEditable() const
1502 {
1503     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1504
1505     if ( IsMultiLine() )
1506     {
1507         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1508     }
1509     else
1510     {
1511         return wxTextEntry::IsEditable();
1512     }
1513 }
1514
1515 bool wxTextCtrl::IsModified() const
1516 {
1517     return m_modified;
1518 }
1519
1520 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1521 {
1522     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1523
1524     if ( key_event.GetKeyCode() == WXK_RETURN )
1525     {
1526         if ( HasFlag(wxTE_PROCESS_ENTER) )
1527         {
1528             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1529             event.SetEventObject(this);
1530             event.SetString(GetValue());
1531             if ( HandleWindowEvent(event) )
1532                 return;
1533         }
1534     }
1535
1536     key_event.Skip();
1537 }
1538
1539 GtkWidget* wxTextCtrl::GetConnectWidget()
1540 {
1541     return GTK_WIDGET(m_text);
1542 }
1543
1544 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1545 {
1546     if ( IsMultiLine() )
1547     {
1548         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1549                                         GTK_TEXT_WINDOW_TEXT );
1550     }
1551     else
1552     {
1553         return GTK_ENTRY(m_text)->text_area;
1554     }
1555 }
1556
1557 // the font will change for subsequent text insertiongs
1558 bool wxTextCtrl::SetFont( const wxFont &font )
1559 {
1560     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1561
1562     if ( !wxTextCtrlBase::SetFont(font) )
1563     {
1564         // font didn't change, nothing to do
1565         return false;
1566     }
1567
1568     if ( IsMultiLine() )
1569     {
1570         SetUpdateFont(true);
1571
1572         m_defaultStyle.SetFont(font);
1573
1574         ChangeFontGlobally();
1575     }
1576
1577     return true;
1578 }
1579
1580 void wxTextCtrl::ChangeFontGlobally()
1581 {
1582     // this method is very inefficient and hence should be called as rarely as
1583     // possible!
1584     //
1585     // TODO: it can be implemented much more efficiently for GTK2
1586     wxASSERT_MSG( IsMultiLine(),
1587                   _T("shouldn't be called for single line controls") );
1588
1589     wxString value = GetValue();
1590     if ( !value.empty() )
1591     {
1592         SetUpdateFont(false);
1593
1594         Clear();
1595         AppendText(value);
1596     }
1597 }
1598
1599 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1600 {
1601     if ( !wxControl::SetForegroundColour(colour) )
1602         return false;
1603
1604     // update default fg colour too
1605     m_defaultStyle.SetTextColour(colour);
1606
1607     return true;
1608 }
1609
1610 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1611 {
1612     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1613
1614     if ( !wxControl::SetBackgroundColour( colour ) )
1615         return false;
1616
1617     if (!m_backgroundColour.Ok())
1618         return false;
1619
1620     // change active background color too
1621     m_defaultStyle.SetBackgroundColour( colour );
1622
1623     return true;
1624 }
1625
1626 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1627 {
1628     if ( IsMultiLine() )
1629     {
1630         if ( style.IsDefault() )
1631         {
1632             // nothing to do
1633             return true;
1634         }
1635
1636         gint l = gtk_text_buffer_get_char_count( m_buffer );
1637
1638         wxCHECK_MSG( start >= 0 && end <= l, false,
1639                      _T("invalid range in wxTextCtrl::SetStyle") );
1640
1641         GtkTextIter starti, endi;
1642         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1643         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1644
1645         wxGtkTextApplyTagsFromAttr( m_widget, m_buffer, style, &starti, &endi );
1646
1647         return true;
1648     }
1649     //else: single line text controls don't support styles
1650
1651     return false;
1652 }
1653
1654 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1655 {
1656     gtk_widget_modify_style(m_text, style);
1657 }
1658
1659 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1660 {
1661     Cut();
1662 }
1663
1664 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1665 {
1666     Copy();
1667 }
1668
1669 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1670 {
1671     Paste();
1672 }
1673
1674 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1675 {
1676     Undo();
1677 }
1678
1679 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1680 {
1681     Redo();
1682 }
1683
1684 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1685 {
1686     event.Enable( CanCut() );
1687 }
1688
1689 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1690 {
1691     event.Enable( CanCopy() );
1692 }
1693
1694 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1695 {
1696     event.Enable( CanPaste() );
1697 }
1698
1699 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1700 {
1701     event.Enable( CanUndo() );
1702 }
1703
1704 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1705 {
1706     event.Enable( CanRedo() );
1707 }
1708
1709 wxSize wxTextCtrl::DoGetBestSize() const
1710 {
1711     // FIXME should be different for multi-line controls...
1712     wxSize ret( wxControl::DoGetBestSize() );
1713     wxSize best(80, ret.y);
1714     CacheBestSize(best);
1715     return best;
1716 }
1717
1718 // ----------------------------------------------------------------------------
1719 // freeze/thaw
1720 // ----------------------------------------------------------------------------
1721
1722 void wxTextCtrl::Freeze()
1723 {
1724     wxCHECK_RET(m_text != NULL, wxT("invalid text ctrl"));
1725
1726     if ( HasFlag(wxTE_MULTILINE) )
1727     {
1728         if (m_freezeCount++ == 0)
1729         {
1730             // freeze textview updates and remove buffer
1731             g_signal_connect (m_text, "expose_event",
1732                               G_CALLBACK (gtk_text_exposed_callback), this);
1733             g_signal_connect (m_widget, "expose_event",
1734                               G_CALLBACK (gtk_text_exposed_callback), this);
1735             gtk_widget_set_sensitive(m_widget, false);
1736             g_object_ref(m_buffer);
1737             GtkTextBuffer* buf_new = gtk_text_buffer_new(NULL);
1738             GtkTextMark* mark = GTK_TEXT_VIEW(m_text)->first_para_mark;
1739             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), buf_new);
1740             // gtk_text_view_set_buffer adds its own reference
1741             g_object_unref(buf_new);
1742             // This mark should be deleted when the buffer is changed,
1743             // but it's not (in GTK+ up to at least 2.10.6).
1744             // Otherwise these anonymous marks start to build up in the buffer,
1745             // and Freeze takes longer and longer each time it is called.
1746             if (GTK_IS_TEXT_MARK(mark) && !gtk_text_mark_get_deleted(mark))
1747                 gtk_text_buffer_delete_mark(m_buffer, mark);
1748         }
1749     }
1750 }
1751
1752 void wxTextCtrl::Thaw()
1753 {
1754     if ( HasFlag(wxTE_MULTILINE) )
1755     {
1756         wxCHECK_RET(m_freezeCount != 0, _T("Thaw() without matching Freeze()"));
1757
1758         if (--m_freezeCount == 0)
1759         {
1760             // Reattach buffer and thaw textview updates
1761             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1762             g_object_unref(m_buffer);
1763             gtk_widget_set_sensitive(m_widget, true);
1764             g_signal_handlers_disconnect_by_func (m_widget,
1765                     (gpointer) gtk_text_exposed_callback, this);
1766             g_signal_handlers_disconnect_by_func (m_text,
1767                     (gpointer) gtk_text_exposed_callback, this);
1768             if (m_showPositionOnThaw != NULL)
1769             {
1770                 gtk_text_view_scroll_mark_onscreen(
1771                     GTK_TEXT_VIEW(m_text), m_showPositionOnThaw);
1772                 m_showPositionOnThaw = NULL;
1773             }
1774         }
1775     }
1776 }
1777
1778 // ----------------------------------------------------------------------------
1779 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1780 // ----------------------------------------------------------------------------
1781
1782 // FIXME: when dragging on a link the sample gets an "Unknown event".
1783 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1784 // a buggy sample, or something else
1785 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1786 {
1787     event.Skip();
1788     if( !HasFlag(wxTE_AUTO_URL) )
1789         return;
1790
1791     gint x, y;
1792     GtkTextIter start, end;
1793     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1794                                                 "wxUrl");
1795
1796     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1797                                           event.GetX(), event.GetY(), &x, &y);
1798
1799     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1800     if (!gtk_text_iter_has_tag(&end, tag))
1801     {
1802         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1803                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1804         return;
1805     }
1806
1807     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1808                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1809
1810     start = end;
1811     if(!gtk_text_iter_begins_tag(&start, tag))
1812         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1813     if(!gtk_text_iter_ends_tag(&end, tag))
1814         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1815
1816     // Native context menu is probably not desired on an URL.
1817     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1818     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1819         event.Skip(false);
1820
1821     wxTextUrlEvent url_event(m_windowId, event,
1822                              gtk_text_iter_get_offset(&start),
1823                              gtk_text_iter_get_offset(&end));
1824
1825     InitCommandEvent(url_event);
1826     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1827     //event.Skip(!HandleWindowEvent(url_event));
1828     HandleWindowEvent(url_event);
1829 }
1830
1831 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
1832 {
1833     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
1834
1835     // GtkTextView starts a drag operation when left mouse button is pressed
1836     // and ends it when it is released and if it doesn't get the release event
1837     // the next click on a control results in an assertion failure inside
1838     // gtk_text_view_start_selection_drag() which simply *kills* the program
1839     // without anything we can do about it, so always let GTK+ have this event
1840     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
1841 }
1842
1843 // static
1844 wxVisualAttributes
1845 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1846 {
1847     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1848 }
1849
1850 #endif // wxUSE_TEXTCTRL