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->GetEventHandler()->ProcessEvent( 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     m_parent->DoAddChild( this );
 707
 708     m_focusWidget = m_text;
 709
 710     PostCreation(size);
 711
 712     if (multi_line)
 713     {
 714         gtk_widget_show(m_text);
 715     }
 716
 717     // We want to be notified about text changes.
 718     if (multi_line)
 719     {
 720         g_signal_connect (m_buffer, "changed",
 721                           G_CALLBACK (gtk_text_changed_callback), this);
 722     }
 723     else
 724     {
 725         g_signal_connect (m_text, "changed",
 726                           G_CALLBACK (gtk_text_changed_callback), this);
 727     }
 728
 729     if (!value.empty())
 730     {
 731         SetValue( value );
 732     }
 733
 734     if (style & wxTE_PASSWORD)
 735         GTKSetVisibility();
 736
 737     if (style & wxTE_READONLY)
 738         GTKSetEditable();
 739
 740     if (style & wxTE_PROCESS_ENTER)
 741         GTKSetActivatesDefault();
 742
 743     // left justification (alignment) is the default anyhow
 744     if ( style & (wxTE_RIGHT | wxTE_CENTRE) )
 745         GTKSetJustification();
 746
 747     if (multi_line)
 748     {
 749         // Handle URLs on multi-line controls with wxTE_AUTO_URL style
 750         if (style & wxTE_AUTO_URL)
 751         {
 752             GtkTextIter start, end;
 753             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 754             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 755
 756             // We create our wxUrl tag here for slight efficiency gain - we
 757             // don't have to check for the tag existance in callbacks,
 758             // hereby it's guaranteed to exist.
 759             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 760                                        "foreground", "blue",
 761                                        "underline", PANGO_UNDERLINE_SINGLE,
 762                                        NULL);
 763
 764             // Check for URLs after each text change
 765             g_signal_connect_after (m_buffer, "insert_text",
 766                                     G_CALLBACK (au_insert_text_callback), this);
 767             g_signal_connect_after (m_buffer, "delete_range",
 768                                     G_CALLBACK (au_delete_range_callback), this);
 769
 770             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 771             // block this callback temporarily. This takes care of gtk+ internal
 772             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 773             // which is undesired because only a part of the URL might be copied.
 774             // The insert-text signal emitted inside it will take care of newly formed
 775             // or wholly copied URLs.
 776             g_signal_connect (m_buffer, "apply_tag",
 777                               G_CALLBACK (au_apply_tag_callback), NULL);
 778
 779             // Check for URLs in the initial string passed to Create
 780             gtk_text_buffer_get_start_iter(m_buffer, &start);
 781             gtk_text_buffer_get_end_iter(m_buffer, &end);
 782             au_check_range(&start, &end);
 783         }
 784     }
 785
 786     g_signal_connect (m_text, "copy-clipboard",
 787                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 788     g_signal_connect (m_text, "cut-clipboard",
 789                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 790     g_signal_connect (m_text, "paste-clipboard",
 791                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 792
 793     m_cursor = wxCursor( wxCURSOR_IBEAM );
 794
 795     return true;
 796 }
 797
 798 GtkEditable *wxTextCtrl::GetEditable() const
 799 {
 800     wxCHECK_MSG( IsSingleLine(), NULL, "shouldn't be called for multiline" );
 801
 802     return GTK_EDITABLE(m_text);
 803 }
 804
 805 // ----------------------------------------------------------------------------
 806 // flags handling
 807 // ----------------------------------------------------------------------------
 808
 809 void wxTextCtrl::GTKSetEditable()
 810 {
 811     gboolean editable = !HasFlag(wxTE_READONLY);
 812     if ( IsSingleLine() )
 813         gtk_editable_set_editable(GTK_EDITABLE(m_text), editable);
 814     else
 815         gtk_text_view_set_editable(GTK_TEXT_VIEW(m_text), editable);
 816 }
 817
 818 void wxTextCtrl::GTKSetVisibility()
 819 {
 820     wxCHECK_RET( IsSingleLine(),
 821                  "wxTE_PASSWORD is for single line text controls only" );
 822
 823     gtk_entry_set_visibility(GTK_ENTRY(m_text), !HasFlag(wxTE_PASSWORD));
 824 }
 825
 826 void wxTextCtrl::GTKSetActivatesDefault()
 827 {
 828     wxCHECK_RET( IsSingleLine(),
 829                  "wxTE_PROCESS_ENTER is for single line text controls only" );
 830
 831     gtk_entry_set_activates_default(GTK_ENTRY(m_text),
 832                                     !HasFlag(wxTE_PROCESS_ENTER));
 833 }
 834
 835 void wxTextCtrl::GTKSetWrapMode()
 836 {
 837     // no wrapping in single line controls
 838     if ( !IsMultiLine() )
 839         return;
 840
 841     // translate wx wrapping style to GTK+
 842     GtkWrapMode wrap;
 843     if ( HasFlag( wxTE_DONTWRAP ) )
 844         wrap = GTK_WRAP_NONE;
 845     else if ( HasFlag( wxTE_CHARWRAP ) )
 846         wrap = GTK_WRAP_CHAR;
 847     else if ( HasFlag( wxTE_WORDWRAP ) )
 848         wrap = GTK_WRAP_WORD;
 849     else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 850         wrap = GTK_WRAP_WORD_CHAR;
 851
 852     gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 853 }
 854
 855 void wxTextCtrl::GTKSetJustification()
 856 {
 857     if ( IsMultiLine() )
 858     {
 859         GtkJustification just;
 860         if ( HasFlag(wxTE_RIGHT) )
 861             just = GTK_JUSTIFY_RIGHT;
 862         else if ( HasFlag(wxTE_CENTRE) )
 863             just = GTK_JUSTIFY_CENTER;
 864         else // wxTE_LEFT == 0
 865             just = GTK_JUSTIFY_LEFT;
 866
 867         gtk_text_view_set_justification(GTK_TEXT_VIEW(m_text), just);
 868     }
 869     else // single line
 870     {
 871         gfloat align;
 872         if ( HasFlag(wxTE_RIGHT) )
 873             align = 1.0;
 874         else if ( HasFlag(wxTE_CENTRE) )
 875             align = 0.5;
 876         else // single line
 877             align = 0.0;
 878
 879         gtk_entry_set_alignment(GTK_ENTRY(m_text), align);
 880     }
 881 }
 882
 883 void wxTextCtrl::SetWindowStyleFlag(long style)
 884 {
 885     long styleOld = GetWindowStyleFlag();
 886
 887     wxTextCtrlBase::SetWindowStyleFlag(style);
 888
 889     if ( (style & wxTE_READONLY) != (styleOld & wxTE_READONLY) )
 890         GTKSetEditable();
 891
 892     if ( (style & wxTE_PASSWORD) != (styleOld & wxTE_PASSWORD) )
 893         GTKSetVisibility();
 894
 895     if ( (style & wxTE_PROCESS_ENTER) != (styleOld & wxTE_PROCESS_ENTER) )
 896         GTKSetActivatesDefault();
 897
 898     static const long flagsWrap = wxTE_WORDWRAP | wxTE_CHARWRAP | wxTE_DONTWRAP;
 899     if ( (style & flagsWrap) != (styleOld & flagsWrap) )
 900         GTKSetWrapMode();
 901
 902     static const long flagsAlign = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 903     if ( (style & flagsAlign) != (styleOld & flagsAlign) )
 904         GTKSetJustification();
 905 }
 906
 907 // ----------------------------------------------------------------------------
 908 // control value
 909 // ----------------------------------------------------------------------------
 910
 911 wxString wxTextCtrl::GetValue() const
 912 {
 913     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 914
 915     if ( IsMultiLine() )
 916     {
 917         GtkTextIter start;
 918         gtk_text_buffer_get_start_iter( m_buffer, &start );
 919         GtkTextIter end;
 920         gtk_text_buffer_get_end_iter( m_buffer, &end );
 921         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 922
 923         return wxGTK_CONV_BACK(text);
 924     }
 925     else // single line
 926     {
 927         return wxTextEntry::GetValue();
 928     }
 929 }
 930
 931 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 932 {
 933     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 934     // encoding?
 935
 936     // first check the default text style (we intentionally don't check the
 937     // style for the current position as it doesn't make sense for SetValue())
 938     const wxTextAttr& style = GetDefaultStyle();
 939     wxFontEncoding enc = style.HasFontEncoding() ? style.GetFontEncoding()
 940                                          : wxFONTENCODING_SYSTEM;
 941
 942     // fall back to the controls font if no style
 943     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 944         enc = GetFont().GetEncoding();
 945
 946     return enc;
 947 }
 948
 949 bool wxTextCtrl::IsEmpty() const
 950 {
 951     if ( IsMultiLine() )
 952         return gtk_text_buffer_get_char_count(m_buffer) == 0;
 953
 954     return wxTextEntry::IsEmpty();
 955 }
 956
 957 void wxTextCtrl::DoSetValue( const wxString &value, int flags )
 958 {
 959     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 960
 961     m_modified = false;
 962
 963     if ( !IsMultiLine() )
 964     {
 965         wxTextEntry::DoSetValue(value, flags);
 966         return;
 967     }
 968
 969     wxFontEncoding enc = m_defaultStyle.HasFont()
 970                             ? m_defaultStyle.GetFont().GetEncoding()
 971                             : wxFONTENCODING_SYSTEM;
 972     if ( enc == wxFONTENCODING_SYSTEM )
 973         enc = GetTextEncoding();
 974
 975     const wxCharBuffer buffer(wxGTK_CONV_ENC(value, enc));
 976     if ( !buffer )
 977     {
 978         // see comment in WriteText() as to why we must warn the user about
 979         // this
 980         wxLogWarning(_("Failed to set text in the text control."));
 981         return;
 982     }
 983
 984     if ( !(flags & SetValue_SendEvent) )
 985     {
 986         EnableTextChangedEvents(false);
 987     }
 988
 989     gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 990
 991     if ( !m_defaultStyle.IsDefault() )
 992     {
 993         GtkTextIter start, end;
 994         gtk_text_buffer_get_bounds( m_buffer, &start, &end );
 995         wxGtkTextApplyTagsFromAttr(m_widget, m_buffer, m_defaultStyle,
 996                                    &start, &end);
 997     }
 998
 999     if ( !(flags & SetValue_SendEvent) )
1000     {
1001         EnableTextChangedEvents(true);
1002     }
1003
1004     // This was added after discussion on the list
1005     SetInsertionPoint(0);
1006 }
1007
1008 void wxTextCtrl::WriteText( const wxString &text )
1009 {
1010     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1011
1012     // we're changing the text programmatically
1013     DontMarkDirtyOnNextChange();
1014
1015     if ( !IsMultiLine() )
1016     {
1017         wxTextEntry::WriteText(text);
1018         return;
1019     }
1020
1021     // check if we have a specific style for the current position
1022     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
1023     wxTextAttr style;
1024     if ( GetStyle(GetInsertionPoint(), style) && style.HasFontEncoding() )
1025     {
1026         enc = style.GetFontEncoding();
1027     }
1028
1029     if ( enc == wxFONTENCODING_SYSTEM )
1030         enc = GetTextEncoding();
1031
1032     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
1033     if ( !buffer )
1034     {
1035         // we must log an error here as losing the text like this can be a
1036         // serious problem (e.g. imagine the document edited by user being
1037         // empty instead of containing the correct text)
1038         wxLogWarning(_("Failed to insert text in the control."));
1039         return;
1040     }
1041
1042     // First remove the selection if there is one
1043     // TODO:  Is there an easier GTK specific way to do this?
1044     long from, to;
1045     GetSelection(&from, &to);
1046     if (from != to)
1047         Remove(from, to);
1048
1049     // Insert the text
1050     wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
1051
1052     GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
1053     // Scroll to cursor, but only if scrollbar thumb is at the very bottom
1054     // won't work when frozen, text view is not using m_buffer then
1055     if (!IsFrozen() && wxIsSameDouble(adj->value, adj->upper - adj->page_size))
1056     {
1057         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
1058                 gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
1059     }
1060 }
1061
1062 wxString wxTextCtrl::GetLineText( long lineNo ) const
1063 {
1064     wxString result;
1065     if ( IsMultiLine() )
1066     {
1067         GtkTextIter line;
1068         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
1069
1070         GtkTextIter end = line;
1071         // avoid skipping to the next line end if this one is empty
1072         if ( !gtk_text_iter_ends_line(&line) )
1073             gtk_text_iter_forward_to_line_end(&end);
1074
1075         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
1076         result = wxGTK_CONV_BACK(text);
1077     }
1078     else
1079     {
1080         if (lineNo == 0)
1081             result = GetValue();
1082     }
1083     return result;
1084 }
1085
1086 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
1087 {
1088   /* If you implement this, don't forget to update the documentation!
1089    * (file docs/latex/wx/text.tex) */
1090     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
1091 }
1092
1093 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
1094 {
1095     if ( IsMultiLine() )
1096     {
1097         GtkTextIter iter;
1098
1099         if (pos > GetLastPosition())
1100             return false;
1101
1102         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
1103
1104         if ( y )
1105             *y = gtk_text_iter_get_line(&iter);
1106         if ( x )
1107             *x = gtk_text_iter_get_line_offset(&iter);
1108     }
1109     else // single line control
1110     {
1111         if ( pos <= GTK_ENTRY(m_text)->text_length )
1112         {
1113             if ( y )
1114                 *y = 0;
1115             if ( x )
1116                 *x = pos;
1117         }
1118         else
1119         {
1120             // index out of bounds
1121             return false;
1122         }
1123     }
1124
1125     return true;
1126 }
1127
1128 long wxTextCtrl::XYToPosition(long x, long y ) const
1129 {
1130     if ( IsSingleLine() )
1131         return 0;
1132
1133     GtkTextIter iter;
1134     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1135         return -1;
1136
1137     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1138     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1139         return -1;
1140
1141     return gtk_text_iter_get_offset(&iter) + x;
1142 }
1143
1144 int wxTextCtrl::GetLineLength(long lineNo) const
1145 {
1146     if ( IsMultiLine() )
1147     {
1148         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1149         if (lineNo > last_line)
1150             return -1;
1151
1152         GtkTextIter iter;
1153         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1154         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1155         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1156     }
1157     else
1158     {
1159         wxString str = GetLineText (lineNo);
1160         return (int) str.length();
1161     }
1162 }
1163
1164 int wxTextCtrl::GetNumberOfLines() const
1165 {
1166     if ( IsMultiLine() )
1167     {
1168         return gtk_text_buffer_get_line_count( m_buffer );
1169     }
1170     else // single line
1171     {
1172         return 1;
1173     }
1174 }
1175
1176 void wxTextCtrl::SetInsertionPoint( long pos )
1177 {
1178     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1179
1180     if ( IsMultiLine() )
1181     {
1182         GtkTextIter iter;
1183         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1184         gtk_text_buffer_place_cursor( m_buffer, &iter );
1185         GtkTextMark* mark = gtk_text_buffer_get_insert(m_buffer);
1186         if (IsFrozen())
1187             // defer until Thaw, text view is not using m_buffer now
1188             m_showPositionOnThaw = mark;
1189         else
1190             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1191     }
1192     else // single line
1193     {
1194         wxTextEntry::SetInsertionPoint(pos);
1195     }
1196 }
1197
1198 void wxTextCtrl::SetEditable( bool editable )
1199 {
1200     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1201
1202     if ( IsMultiLine() )
1203     {
1204         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1205     }
1206     else // single line
1207     {
1208         wxTextEntry::SetEditable(editable);
1209     }
1210 }
1211
1212 bool wxTextCtrl::Enable( bool enable )
1213 {
1214     if (!wxWindowBase::Enable(enable))
1215     {
1216         // nothing to do
1217         return false;
1218     }
1219
1220     gtk_widget_set_sensitive( m_text, enable );
1221
1222     return true;
1223 }
1224
1225 // wxGTK-specific: called recursively by Enable,
1226 // to give widgets an opportunity to correct their colours after they
1227 // have been changed by Enable
1228 void wxTextCtrl::OnEnabled(bool WXUNUSED(enable))
1229 {
1230     // If we have a custom background colour, we use this colour in both
1231     // disabled and enabled mode, or we end up with a different colour under the
1232     // text.
1233     wxColour oldColour = GetBackgroundColour();
1234     if (oldColour.Ok())
1235     {
1236         // Need to set twice or it'll optimize the useful stuff out
1237         if (oldColour == * wxWHITE)
1238             SetBackgroundColour(*wxBLACK);
1239         else
1240             SetBackgroundColour(*wxWHITE);
1241         SetBackgroundColour(oldColour);
1242     }
1243 }
1244
1245 void wxTextCtrl::MarkDirty()
1246 {
1247     m_modified = true;
1248 }
1249
1250 void wxTextCtrl::DiscardEdits()
1251 {
1252     m_modified = false;
1253 }
1254
1255 // ----------------------------------------------------------------------------
1256 // event handling
1257 // ----------------------------------------------------------------------------
1258
1259 void wxTextCtrl::EnableTextChangedEvents(bool enable)
1260 {
1261     if ( enable )
1262     {
1263         g_signal_handlers_unblock_by_func(GetTextObject(),
1264             (gpointer)gtk_text_changed_callback, this);
1265     }
1266     else // disable events
1267     {
1268         g_signal_handlers_block_by_func(GetTextObject(),
1269             (gpointer)gtk_text_changed_callback, this);
1270     }
1271 }
1272
1273 bool wxTextCtrl::IgnoreTextUpdate()
1274 {
1275     if ( m_countUpdatesToIgnore > 0 )
1276     {
1277         m_countUpdatesToIgnore--;
1278
1279         return true;
1280     }
1281
1282     return false;
1283 }
1284
1285 bool wxTextCtrl::MarkDirtyOnChange()
1286 {
1287     if ( m_dontMarkDirty )
1288     {
1289         m_dontMarkDirty = false;
1290
1291         return false;
1292     }
1293
1294     return true;
1295 }
1296
1297 void wxTextCtrl::SetSelection( long from, long to )
1298 {
1299     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1300
1301     if (from == -1 && to == -1)
1302     {
1303         from = 0;
1304         to = GetValue().length();
1305     }
1306
1307     if ( IsMultiLine() )
1308     {
1309         GtkTextIter fromi, toi;
1310         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1311         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1312
1313         gtk_text_buffer_place_cursor( m_buffer, &toi );
1314         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1315     }
1316     else // single line
1317     {
1318         wxTextEntry::SetSelection(from, to);
1319     }
1320 }
1321
1322 void wxTextCtrl::ShowPosition( long pos )
1323 {
1324     if (IsMultiLine())
1325     {
1326         GtkTextIter iter;
1327         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, int(pos));
1328         GtkTextMark* mark = gtk_text_buffer_get_mark(m_buffer, "ShowPosition");
1329         gtk_text_buffer_move_mark(m_buffer, mark, &iter);
1330         if (IsFrozen())
1331             // defer until Thaw, text view is not using m_buffer now
1332             m_showPositionOnThaw = mark;
1333         else
1334             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1335     }
1336 }
1337
1338 wxTextCtrlHitTestResult
1339 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1340 {
1341     if ( !IsMultiLine() )
1342     {
1343         // not supported
1344         return wxTE_HT_UNKNOWN;
1345     }
1346
1347     int x, y;
1348     gtk_text_view_window_to_buffer_coords
1349     (
1350         GTK_TEXT_VIEW(m_text),
1351         GTK_TEXT_WINDOW_TEXT,
1352         pt.x, pt.y,
1353         &x, &y
1354     );
1355
1356     GtkTextIter iter;
1357     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1358     if ( pos )
1359         *pos = gtk_text_iter_get_offset(&iter);
1360
1361     return wxTE_HT_ON_TEXT;
1362 }
1363
1364 long wxTextCtrl::GetInsertionPoint() const
1365 {
1366     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1367
1368     if ( IsMultiLine() )
1369     {
1370         // There is no direct accessor for the cursor, but
1371         // internally, the cursor is the "mark" called
1372         // "insert" in the text view's btree structure.
1373
1374         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1375         GtkTextIter cursor;
1376         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1377
1378         return gtk_text_iter_get_offset( &cursor );
1379     }
1380     else
1381     {
1382         return wxTextEntry::GetInsertionPoint();
1383     }
1384 }
1385
1386 wxTextPos wxTextCtrl::GetLastPosition() const
1387 {
1388     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1389
1390     int pos = 0;
1391
1392     if ( IsMultiLine() )
1393     {
1394         GtkTextIter end;
1395         gtk_text_buffer_get_end_iter( m_buffer, &end );
1396
1397         pos = gtk_text_iter_get_offset( &end );
1398     }
1399     else // single line
1400     {
1401         pos = wxTextEntry::GetLastPosition();
1402     }
1403
1404     return (long)pos;
1405 }
1406
1407 void wxTextCtrl::Remove( long from, long to )
1408 {
1409     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1410
1411     if ( IsMultiLine() )
1412     {
1413         GtkTextIter fromi, toi;
1414         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1415         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1416
1417         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1418     }
1419     else // single line
1420     {
1421         wxTextEntry::Remove(from, to);
1422     }
1423 }
1424
1425 void wxTextCtrl::Cut()
1426 {
1427     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1428
1429     if ( IsMultiLine() )
1430         g_signal_emit_by_name (m_text, "cut-clipboard");
1431     else
1432         wxTextEntry::Cut();
1433 }
1434
1435 void wxTextCtrl::Copy()
1436 {
1437     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1438
1439     if ( IsMultiLine() )
1440         g_signal_emit_by_name (m_text, "copy-clipboard");
1441     else
1442         wxTextEntry::Copy();
1443 }
1444
1445 void wxTextCtrl::Paste()
1446 {
1447     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1448
1449     if ( IsMultiLine() )
1450         g_signal_emit_by_name (m_text, "paste-clipboard");
1451     else
1452         wxTextEntry::Paste();
1453 }
1454
1455 // If the return values from and to are the same, there is no
1456 // selection.
1457 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1458 {
1459     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1460
1461     if ( !IsMultiLine() )
1462     {
1463         wxTextEntry::GetSelection(fromOut, toOut);
1464         return;
1465     }
1466
1467     gint from, to;
1468
1469     GtkTextIter ifrom, ito;
1470     if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1471     {
1472         from = gtk_text_iter_get_offset(&ifrom);
1473         to = gtk_text_iter_get_offset(&ito);
1474
1475         if ( from > to )
1476         {
1477             // exchange them to be compatible with wxMSW
1478             gint tmp = from;
1479             from = to;
1480             to = tmp;
1481         }
1482     }
1483     else // no selection
1484     {
1485         from =
1486         to = GetInsertionPoint();
1487     }
1488
1489     if ( fromOut )
1490         *fromOut = from;
1491     if ( toOut )
1492         *toOut = to;
1493 }
1494
1495
1496 bool wxTextCtrl::IsEditable() const
1497 {
1498     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1499
1500     if ( IsMultiLine() )
1501     {
1502         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1503     }
1504     else
1505     {
1506         return wxTextEntry::IsEditable();
1507     }
1508 }
1509
1510 bool wxTextCtrl::IsModified() const
1511 {
1512     return m_modified;
1513 }
1514
1515 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1516 {
1517     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1518
1519     if ( key_event.GetKeyCode() == WXK_RETURN )
1520     {
1521         if ( HasFlag(wxTE_PROCESS_ENTER) )
1522         {
1523             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1524             event.SetEventObject(this);
1525             event.SetString(GetValue());
1526             if ( GetEventHandler()->ProcessEvent(event) )
1527                 return;
1528         }
1529     }
1530
1531     key_event.Skip();
1532 }
1533
1534 GtkWidget* wxTextCtrl::GetConnectWidget()
1535 {
1536     return GTK_WIDGET(m_text);
1537 }
1538
1539 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1540 {
1541     if ( IsMultiLine() )
1542     {
1543         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1544                                         GTK_TEXT_WINDOW_TEXT );
1545     }
1546     else
1547     {
1548         return GTK_ENTRY(m_text)->text_area;
1549     }
1550 }
1551
1552 // the font will change for subsequent text insertiongs
1553 bool wxTextCtrl::SetFont( const wxFont &font )
1554 {
1555     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1556
1557     if ( !wxTextCtrlBase::SetFont(font) )
1558     {
1559         // font didn't change, nothing to do
1560         return false;
1561     }
1562
1563     if ( IsMultiLine() )
1564     {
1565         SetUpdateFont(true);
1566
1567         m_defaultStyle.SetFont(font);
1568
1569         ChangeFontGlobally();
1570     }
1571
1572     return true;
1573 }
1574
1575 void wxTextCtrl::ChangeFontGlobally()
1576 {
1577     // this method is very inefficient and hence should be called as rarely as
1578     // possible!
1579     //
1580     // TODO: it can be implemented much more efficiently for GTK2
1581     wxASSERT_MSG( IsMultiLine(),
1582                   _T("shouldn't be called for single line controls") );
1583
1584     wxString value = GetValue();
1585     if ( !value.empty() )
1586     {
1587         SetUpdateFont(false);
1588
1589         Clear();
1590         AppendText(value);
1591     }
1592 }
1593
1594 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1595 {
1596     if ( !wxControl::SetForegroundColour(colour) )
1597         return false;
1598
1599     // update default fg colour too
1600     m_defaultStyle.SetTextColour(colour);
1601
1602     return true;
1603 }
1604
1605 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1606 {
1607     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1608
1609     if ( !wxControl::SetBackgroundColour( colour ) )
1610         return false;
1611
1612     if (!m_backgroundColour.Ok())
1613         return false;
1614
1615     // change active background color too
1616     m_defaultStyle.SetBackgroundColour( colour );
1617
1618     return true;
1619 }
1620
1621 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1622 {
1623     if ( IsMultiLine() )
1624     {
1625         if ( style.IsDefault() )
1626         {
1627             // nothing to do
1628             return true;
1629         }
1630
1631         gint l = gtk_text_buffer_get_char_count( m_buffer );
1632
1633         wxCHECK_MSG( start >= 0 && end <= l, false,
1634                      _T("invalid range in wxTextCtrl::SetStyle") );
1635
1636         GtkTextIter starti, endi;
1637         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1638         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1639
1640         wxGtkTextApplyTagsFromAttr( m_widget, m_buffer, style, &starti, &endi );
1641
1642         return true;
1643     }
1644     //else: single line text controls don't support styles
1645
1646     return false;
1647 }
1648
1649 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1650 {
1651     gtk_widget_modify_style(m_text, style);
1652 }
1653
1654 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1655 {
1656     Cut();
1657 }
1658
1659 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1660 {
1661     Copy();
1662 }
1663
1664 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1665 {
1666     Paste();
1667 }
1668
1669 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1670 {
1671     Undo();
1672 }
1673
1674 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1675 {
1676     Redo();
1677 }
1678
1679 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1680 {
1681     event.Enable( CanCut() );
1682 }
1683
1684 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1685 {
1686     event.Enable( CanCopy() );
1687 }
1688
1689 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1690 {
1691     event.Enable( CanPaste() );
1692 }
1693
1694 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1695 {
1696     event.Enable( CanUndo() );
1697 }
1698
1699 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1700 {
1701     event.Enable( CanRedo() );
1702 }
1703
1704 wxSize wxTextCtrl::DoGetBestSize() const
1705 {
1706     // FIXME should be different for multi-line controls...
1707     wxSize ret( wxControl::DoGetBestSize() );
1708     wxSize best(80, ret.y);
1709     CacheBestSize(best);
1710     return best;
1711 }
1712
1713 // ----------------------------------------------------------------------------
1714 // freeze/thaw
1715 // ----------------------------------------------------------------------------
1716
1717 void wxTextCtrl::Freeze()
1718 {
1719     wxCHECK_RET(m_text != NULL, wxT("invalid text ctrl"));
1720
1721     if ( HasFlag(wxTE_MULTILINE) )
1722     {
1723         if (m_freezeCount++ == 0)
1724         {
1725             // freeze textview updates and remove buffer
1726             g_signal_connect (m_text, "expose_event",
1727                               G_CALLBACK (gtk_text_exposed_callback), this);
1728             g_signal_connect (m_widget, "expose_event",
1729                               G_CALLBACK (gtk_text_exposed_callback), this);
1730             gtk_widget_set_sensitive(m_widget, false);
1731             g_object_ref(m_buffer);
1732             GtkTextBuffer* buf_new = gtk_text_buffer_new(NULL);
1733             GtkTextMark* mark = GTK_TEXT_VIEW(m_text)->first_para_mark;
1734             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), buf_new);
1735             // gtk_text_view_set_buffer adds its own reference
1736             g_object_unref(buf_new);
1737             // This mark should be deleted when the buffer is changed,
1738             // but it's not (in GTK+ up to at least 2.10.6).
1739             // Otherwise these anonymous marks start to build up in the buffer,
1740             // and Freeze takes longer and longer each time it is called.
1741             if (GTK_IS_TEXT_MARK(mark) && !gtk_text_mark_get_deleted(mark))
1742                 gtk_text_buffer_delete_mark(m_buffer, mark);
1743         }
1744     }
1745 }
1746
1747 void wxTextCtrl::Thaw()
1748 {
1749     if ( HasFlag(wxTE_MULTILINE) )
1750     {
1751         wxCHECK_RET(m_freezeCount != 0, _T("Thaw() without matching Freeze()"));
1752
1753         if (--m_freezeCount == 0)
1754         {
1755             // Reattach buffer and thaw textview updates
1756             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1757             g_object_unref(m_buffer);
1758             gtk_widget_set_sensitive(m_widget, true);
1759             g_signal_handlers_disconnect_by_func (m_widget,
1760                     (gpointer) gtk_text_exposed_callback, this);
1761             g_signal_handlers_disconnect_by_func (m_text,
1762                     (gpointer) gtk_text_exposed_callback, this);
1763             if (m_showPositionOnThaw != NULL)
1764             {
1765                 gtk_text_view_scroll_mark_onscreen(
1766                     GTK_TEXT_VIEW(m_text), m_showPositionOnThaw);
1767                 m_showPositionOnThaw = NULL;
1768             }
1769         }
1770     }
1771 }
1772
1773 // ----------------------------------------------------------------------------
1774 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1775 // ----------------------------------------------------------------------------
1776
1777 // FIXME: when dragging on a link the sample gets an "Unknown event".
1778 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1779 // a buggy sample, or something else
1780 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1781 {
1782     event.Skip();
1783     if( !HasFlag(wxTE_AUTO_URL) )
1784         return;
1785
1786     gint x, y;
1787     GtkTextIter start, end;
1788     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1789                                                 "wxUrl");
1790
1791     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1792                                           event.GetX(), event.GetY(), &x, &y);
1793
1794     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1795     if (!gtk_text_iter_has_tag(&end, tag))
1796     {
1797         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1798                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1799         return;
1800     }
1801
1802     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1803                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1804
1805     start = end;
1806     if(!gtk_text_iter_begins_tag(&start, tag))
1807         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1808     if(!gtk_text_iter_ends_tag(&end, tag))
1809         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1810
1811     // Native context menu is probably not desired on an URL.
1812     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1813     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1814         event.Skip(false);
1815
1816     wxTextUrlEvent url_event(m_windowId, event,
1817                              gtk_text_iter_get_offset(&start),
1818                              gtk_text_iter_get_offset(&end));
1819
1820     InitCommandEvent(url_event);
1821     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1822     //event.Skip(!GetEventHandler()->ProcessEvent(url_event));
1823     GetEventHandler()->ProcessEvent(url_event);
1824 }
1825
1826 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
1827 {
1828     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
1829
1830     // GtkTextView starts a drag operation when left mouse button is pressed
1831     // and ends it when it is released and if it doesn't get the release event
1832     // the next click on a control results in an assertion failure inside
1833     // gtk_text_view_start_selection_drag() which simply *kills* the program
1834     // without anything we can do about it, so always let GTK+ have this event
1835     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
1836 }
1837
1838 // static
1839 wxVisualAttributes
1840 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1841 {
1842     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1843 }
1844
1845 #endif // wxUSE_TEXTCTRL