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", &para_start, &para_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", &para_start, &para_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", &para_start, &para_end);
 243
 244         const wxArrayInt& tabs = attr.GetTabs();
 245
 246         wxString tagname = wxT("WXTABS");
 247         g_snprintf(buf, sizeof(buf), "WXTABS");
 248         for (size_t i = 0; i < tabs.GetCount(); i++)
 249             tagname += wxString::Format(wxT(" %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 //  "populate_popup" from text control and "unmap" from its poup menu
 499 //-----------------------------------------------------------------------------
 500
 501 extern "C" {
 502 static void
 503 gtk_textctrl_popup_unmap( GtkMenu *WXUNUSED(menu), wxTextCtrl* win )
 504 {
 505     win->GTKEnableFocusOutEvent();
 506 }
 507 }
 508
 509 extern "C" {
 510 static void
 511 gtk_textctrl_populate_popup( GtkEntry *WXUNUSED(entry), GtkMenu *menu, wxTextCtrl *win )
 512 {
 513     win->GTKDisableFocusOutEvent();
 514
 515     g_signal_connect (menu, "unmap", G_CALLBACK (gtk_textctrl_popup_unmap), win );
 516 }
 517 }
 518
 519 //-----------------------------------------------------------------------------
 520 //  "changed"
 521 //-----------------------------------------------------------------------------
 522
 523 extern "C" {
 524 static void
 525 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
 526 {
 527     if ( win->IgnoreTextUpdate() )
 528         return;
 529
 530     if (!win->m_hasVMT) return;
 531
 532     if ( win->MarkDirtyOnChange() )
 533         win->MarkDirty();
 534
 535     win->SendTextUpdatedEvent();
 536 }
 537 }
 538
 539 //-----------------------------------------------------------------------------
 540 //  clipboard events: "copy-clipboard", "cut-clipboard", "paste-clipboard"
 541 //-----------------------------------------------------------------------------
 542
 543 // common part of the event handlers below
 544 static void
 545 handle_text_clipboard_callback( GtkWidget *widget, wxTextCtrl *win,
 546                                 wxEventType eventType, const gchar * signal_name)
 547 {
 548     wxClipboardTextEvent event( eventType, win->GetId() );
 549     event.SetEventObject( win );
 550     if ( win->HandleWindowEvent( event ) )
 551     {
 552         // don't let the default processing to take place if we did something
 553         // ourselves in the event handler
 554         g_signal_stop_emission_by_name (widget, signal_name);
 555     }
 556 }
 557
 558 extern "C" {
 559 static void
 560 gtk_copy_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 561 {
 562     handle_text_clipboard_callback(
 563         widget, win, wxEVT_COMMAND_TEXT_COPY, "copy-clipboard" );
 564 }
 565
 566 static void
 567 gtk_cut_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 568 {
 569     handle_text_clipboard_callback(
 570         widget, win, wxEVT_COMMAND_TEXT_CUT, "cut-clipboard" );
 571 }
 572
 573 static void
 574 gtk_paste_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 575 {
 576     handle_text_clipboard_callback(
 577         widget, win, wxEVT_COMMAND_TEXT_PASTE, "paste-clipboard" );
 578 }
 579 }
 580
 581 //-----------------------------------------------------------------------------
 582 //  wxTextCtrl
 583 //-----------------------------------------------------------------------------
 584
 585 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 586
 587 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 588     EVT_CHAR(wxTextCtrl::OnChar)
 589
 590     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 591     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 592     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 593     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 594     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 595
 596     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 597     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 598     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 599     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 600     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 601
 602     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 603     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 604     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 605     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 606     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 607     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 608     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 609     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 610     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 611 END_EVENT_TABLE()
 612
 613 void wxTextCtrl::Init()
 614 {
 615     m_dontMarkDirty =
 616     m_modified = false;
 617
 618     m_countUpdatesToIgnore = 0;
 619
 620     SetUpdateFont(false);
 621
 622     m_text = NULL;
 623     m_showPositionOnThaw = NULL;
 624     m_gdkHandCursor = NULL;
 625     m_gdkXTermCursor = NULL;
 626 }
 627
 628 wxTextCtrl::~wxTextCtrl()
 629 {
 630     if(m_gdkHandCursor)
 631         gdk_cursor_unref(m_gdkHandCursor);
 632     if(m_gdkXTermCursor)
 633         gdk_cursor_unref(m_gdkXTermCursor);
 634 }
 635
 636 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 637                         wxWindowID id,
 638                         const wxString &value,
 639                         const wxPoint &pos,
 640                         const wxSize &size,
 641                         long style,
 642                         const wxValidator& validator,
 643                         const wxString &name )
 644 {
 645     Init();
 646
 647     Create( parent, id, value, pos, size, style, validator, name );
 648 }
 649
 650 bool wxTextCtrl::Create( wxWindow *parent,
 651                          wxWindowID id,
 652                          const wxString &value,
 653                          const wxPoint &pos,
 654                          const wxSize &size,
 655                          long style,
 656                          const wxValidator& validator,
 657                          const wxString &name )
 658 {
 659     if (!PreCreation( parent, pos, size ) ||
 660         !CreateBase( parent, id, pos, size, style, validator, name ))
 661     {
 662         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 663         return false;
 664     }
 665
 666     bool multi_line = (style & wxTE_MULTILINE) != 0;
 667
 668     if (multi_line)
 669     {
 670         // Create view
 671         m_text = gtk_text_view_new();
 672
 673         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 674
 675         // create "ShowPosition" marker
 676         GtkTextIter iter;
 677         gtk_text_buffer_get_start_iter(m_buffer, &iter);
 678         gtk_text_buffer_create_mark(m_buffer, "ShowPosition", &iter, true);
 679
 680         // create scrolled window
 681         m_widget = gtk_scrolled_window_new( NULL, NULL );
 682         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 683                                         GTK_POLICY_AUTOMATIC,
 684                                         style & wxTE_NO_VSCROLL
 685                                             ? GTK_POLICY_NEVER
 686                                             : GTK_POLICY_AUTOMATIC );
 687         // for ScrollLines/Pages
 688         m_scrollBar[1] = (GtkRange*)((GtkScrolledWindow*)m_widget)->vscrollbar;
 689
 690         // Insert view into scrolled window
 691         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 692
 693         GTKSetWrapMode();
 694
 695         GTKScrolledWindowSetBorder(m_widget, style);
 696
 697         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 698
 699         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 700     }
 701     else
 702     {
 703         // a single-line text control: no need for scrollbars
 704         m_widget =
 705         m_text = gtk_entry_new();
 706
 707         if (style & wxNO_BORDER)
 708             g_object_set (m_text, "has-frame", FALSE, NULL);
 709
 710     }
 711     g_object_ref(m_widget);
 712
 713     m_parent->DoAddChild( this );
 714
 715     m_focusWidget = m_text;
 716
 717     PostCreation(size);
 718
 719     if (multi_line)
 720     {
 721         gtk_widget_show(m_text);
 722     }
 723
 724     // We want to be notified about text changes.
 725     if (multi_line)
 726     {
 727         g_signal_connect (m_buffer, "changed",
 728                           G_CALLBACK (gtk_text_changed_callback), this);
 729     }
 730     else
 731     {
 732         g_signal_connect (m_text, "changed",
 733                           G_CALLBACK (gtk_text_changed_callback), this);
 734     }
 735
 736     // Catch to disable focus out handling
 737     g_signal_connect (m_text, "populate_popup",
 738                       G_CALLBACK (gtk_textctrl_populate_popup),
 739                       this);
 740
 741     if (!value.empty())
 742     {
 743         SetValue( value );
 744     }
 745
 746     if (style & wxTE_PASSWORD)
 747         GTKSetVisibility();
 748
 749     if (style & wxTE_READONLY)
 750         GTKSetEditable();
 751
 752     // left justification (alignment) is the default anyhow
 753     if ( style & (wxTE_RIGHT | wxTE_CENTRE) )
 754         GTKSetJustification();
 755
 756     if (multi_line)
 757     {
 758         // Handle URLs on multi-line controls with wxTE_AUTO_URL style
 759         if (style & wxTE_AUTO_URL)
 760         {
 761             GtkTextIter start, end;
 762             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 763             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 764
 765             // We create our wxUrl tag here for slight efficiency gain - we
 766             // don't have to check for the tag existance in callbacks,
 767             // hereby it's guaranteed to exist.
 768             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 769                                        "foreground", "blue",
 770                                        "underline", PANGO_UNDERLINE_SINGLE,
 771                                        NULL);
 772
 773             // Check for URLs after each text change
 774             g_signal_connect_after (m_buffer, "insert_text",
 775                                     G_CALLBACK (au_insert_text_callback), this);
 776             g_signal_connect_after (m_buffer, "delete_range",
 777                                     G_CALLBACK (au_delete_range_callback), this);
 778
 779             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 780             // block this callback temporarily. This takes care of gtk+ internal
 781             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 782             // which is undesired because only a part of the URL might be copied.
 783             // The insert-text signal emitted inside it will take care of newly formed
 784             // or wholly copied URLs.
 785             g_signal_connect (m_buffer, "apply_tag",
 786                               G_CALLBACK (au_apply_tag_callback), NULL);
 787
 788             // Check for URLs in the initial string passed to Create
 789             gtk_text_buffer_get_start_iter(m_buffer, &start);
 790             gtk_text_buffer_get_end_iter(m_buffer, &end);
 791             au_check_range(&start, &end);
 792         }
 793     }
 794     else // single line
 795     {
 796         // do the right thing with Enter presses depending on whether we have
 797         // wxTE_PROCESS_ENTER or not
 798         GTKSetActivatesDefault();
 799     }
 800
 801
 802     g_signal_connect (m_text, "copy-clipboard",
 803                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 804     g_signal_connect (m_text, "cut-clipboard",
 805                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 806     g_signal_connect (m_text, "paste-clipboard",
 807                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 808
 809     m_cursor = wxCursor( wxCURSOR_IBEAM );
 810
 811     return true;
 812 }
 813
 814 GtkEditable *wxTextCtrl::GetEditable() const
 815 {
 816     wxCHECK_MSG( IsSingleLine(), NULL, "shouldn't be called for multiline" );
 817
 818     return GTK_EDITABLE(m_text);
 819 }
 820
 821 GtkEntry *wxTextCtrl::GetEntry() const
 822 {
 823     return GTK_ENTRY(m_text);
 824 }
 825
 826 // ----------------------------------------------------------------------------
 827 // flags handling
 828 // ----------------------------------------------------------------------------
 829
 830 void wxTextCtrl::GTKSetEditable()
 831 {
 832     gboolean editable = !HasFlag(wxTE_READONLY);
 833     if ( IsSingleLine() )
 834         gtk_editable_set_editable(GTK_EDITABLE(m_text), editable);
 835     else
 836         gtk_text_view_set_editable(GTK_TEXT_VIEW(m_text), editable);
 837 }
 838
 839 void wxTextCtrl::GTKSetVisibility()
 840 {
 841     wxCHECK_RET( IsSingleLine(),
 842                  "wxTE_PASSWORD is for single line text controls only" );
 843
 844     gtk_entry_set_visibility(GTK_ENTRY(m_text), !HasFlag(wxTE_PASSWORD));
 845 }
 846
 847 void wxTextCtrl::GTKSetActivatesDefault()
 848 {
 849     wxCHECK_RET( IsSingleLine(),
 850                  "wxTE_PROCESS_ENTER is for single line text controls only" );
 851
 852     gtk_entry_set_activates_default(GTK_ENTRY(m_text),
 853                                     !HasFlag(wxTE_PROCESS_ENTER));
 854 }
 855
 856 void wxTextCtrl::GTKSetWrapMode()
 857 {
 858     // no wrapping in single line controls
 859     if ( !IsMultiLine() )
 860         return;
 861
 862     // translate wx wrapping style to GTK+
 863     GtkWrapMode wrap;
 864     if ( HasFlag( wxTE_DONTWRAP ) )
 865         wrap = GTK_WRAP_NONE;
 866     else if ( HasFlag( wxTE_CHARWRAP ) )
 867         wrap = GTK_WRAP_CHAR;
 868     else if ( HasFlag( wxTE_WORDWRAP ) )
 869         wrap = GTK_WRAP_WORD;
 870     else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 871         wrap = GTK_WRAP_WORD_CHAR;
 872
 873     gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 874 }
 875
 876 void wxTextCtrl::GTKSetJustification()
 877 {
 878     if ( IsMultiLine() )
 879     {
 880         GtkJustification just;
 881         if ( HasFlag(wxTE_RIGHT) )
 882             just = GTK_JUSTIFY_RIGHT;
 883         else if ( HasFlag(wxTE_CENTRE) )
 884             just = GTK_JUSTIFY_CENTER;
 885         else // wxTE_LEFT == 0
 886             just = GTK_JUSTIFY_LEFT;
 887
 888         gtk_text_view_set_justification(GTK_TEXT_VIEW(m_text), just);
 889     }
 890     else // single line
 891     {
 892         gfloat align;
 893         if ( HasFlag(wxTE_RIGHT) )
 894             align = 1.0;
 895         else if ( HasFlag(wxTE_CENTRE) )
 896             align = 0.5;
 897         else // single line
 898             align = 0.0;
 899
 900         gtk_entry_set_alignment(GTK_ENTRY(m_text), align);
 901     }
 902 }
 903
 904 void wxTextCtrl::SetWindowStyleFlag(long style)
 905 {
 906     long styleOld = GetWindowStyleFlag();
 907
 908     wxTextCtrlBase::SetWindowStyleFlag(style);
 909
 910     if ( (style & wxTE_READONLY) != (styleOld & wxTE_READONLY) )
 911         GTKSetEditable();
 912
 913     if ( (style & wxTE_PASSWORD) != (styleOld & wxTE_PASSWORD) )
 914         GTKSetVisibility();
 915
 916     if ( (style & wxTE_PROCESS_ENTER) != (styleOld & wxTE_PROCESS_ENTER) )
 917         GTKSetActivatesDefault();
 918
 919     static const long flagsWrap = wxTE_WORDWRAP | wxTE_CHARWRAP | wxTE_DONTWRAP;
 920     if ( (style & flagsWrap) != (styleOld & flagsWrap) )
 921         GTKSetWrapMode();
 922
 923     static const long flagsAlign = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 924     if ( (style & flagsAlign) != (styleOld & flagsAlign) )
 925         GTKSetJustification();
 926 }
 927
 928 // ----------------------------------------------------------------------------
 929 // control value
 930 // ----------------------------------------------------------------------------
 931
 932 wxString wxTextCtrl::GetValue() const
 933 {
 934     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 935
 936     if ( IsMultiLine() )
 937     {
 938         GtkTextIter start;
 939         gtk_text_buffer_get_start_iter( m_buffer, &start );
 940         GtkTextIter end;
 941         gtk_text_buffer_get_end_iter( m_buffer, &end );
 942         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 943
 944         return wxGTK_CONV_BACK(text);
 945     }
 946     else // single line
 947     {
 948         return wxTextEntry::GetValue();
 949     }
 950 }
 951
 952 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 953 {
 954     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 955     // encoding?
 956
 957     // first check the default text style (we intentionally don't check the
 958     // style for the current position as it doesn't make sense for SetValue())
 959     const wxTextAttr& style = GetDefaultStyle();
 960     wxFontEncoding enc = style.HasFontEncoding() ? style.GetFontEncoding()
 961                                          : wxFONTENCODING_SYSTEM;
 962
 963     // fall back to the controls font if no style
 964     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 965         enc = GetFont().GetEncoding();
 966
 967     return enc;
 968 }
 969
 970 bool wxTextCtrl::IsEmpty() const
 971 {
 972     if ( IsMultiLine() )
 973         return gtk_text_buffer_get_char_count(m_buffer) == 0;
 974
 975     return wxTextEntry::IsEmpty();
 976 }
 977
 978 void wxTextCtrl::DoSetValue( const wxString &value, int flags )
 979 {
 980     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 981
 982     m_modified = false;
 983
 984     if ( !IsMultiLine() )
 985     {
 986         wxTextEntry::DoSetValue(value, flags);
 987         return;
 988     }
 989
 990     if (value.IsEmpty())
 991     {
 992         if ( !(flags & SetValue_SendEvent) )
 993             EnableTextChangedEvents(false);
 994
 995         gtk_text_buffer_set_text( m_buffer, "", 0 );
 996
 997         if ( !(flags & SetValue_SendEvent) )
 998             EnableTextChangedEvents(true);
 999
1000         return;
1001     }
1002
1003 #if wxUSE_UNICODE
1004     const wxCharBuffer buffer(value.utf8_str());
1005 #else
1006     wxFontEncoding enc = m_defaultStyle.HasFont()
1007                             ? m_defaultStyle.GetFont().GetEncoding()
1008                             : wxFONTENCODING_SYSTEM;
1009     if ( enc == wxFONTENCODING_SYSTEM )
1010         enc = GetTextEncoding();
1011
1012     const wxCharBuffer buffer(wxGTK_CONV_ENC(value, enc));
1013     if ( !buffer )
1014     {
1015         // see comment in WriteText() as to why we must warn the user about
1016         // this
1017         wxLogWarning(_("Failed to set text in the text control."));
1018         return;
1019     }
1020 #endif
1021
1022     if ( !(flags & SetValue_SendEvent) )
1023     {
1024         EnableTextChangedEvents(false);
1025     }
1026
1027     gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
1028
1029     if ( !m_defaultStyle.IsDefault() )
1030     {
1031         GtkTextIter start, end;
1032         gtk_text_buffer_get_bounds( m_buffer, &start, &end );
1033         wxGtkTextApplyTagsFromAttr(m_widget, m_buffer, m_defaultStyle,
1034                                    &start, &end);
1035     }
1036
1037     if ( !(flags & SetValue_SendEvent) )
1038     {
1039         EnableTextChangedEvents(true);
1040     }
1041 }
1042
1043 void wxTextCtrl::WriteText( const wxString &text )
1044 {
1045     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1046
1047     // we're changing the text programmatically
1048     DontMarkDirtyOnNextChange();
1049
1050     if ( !IsMultiLine() )
1051     {
1052         wxTextEntry::WriteText(text);
1053         return;
1054     }
1055
1056 #if wxUSE_UNICODE
1057     const wxCharBuffer buffer(text.utf8_str());
1058 #else
1059     // check if we have a specific style for the current position
1060     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
1061     wxTextAttr style;
1062     if ( GetStyle(GetInsertionPoint(), style) && style.HasFontEncoding() )
1063     {
1064         enc = style.GetFontEncoding();
1065     }
1066
1067     if ( enc == wxFONTENCODING_SYSTEM )
1068         enc = GetTextEncoding();
1069
1070     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
1071     if ( !buffer )
1072     {
1073         // we must log an error here as losing the text like this can be a
1074         // serious problem (e.g. imagine the document edited by user being
1075         // empty instead of containing the correct text)
1076         wxLogWarning(_("Failed to insert text in the control."));
1077         return;
1078     }
1079 #endif
1080
1081     // First remove the selection if there is one
1082     // TODO:  Is there an easier GTK specific way to do this?
1083     long from, to;
1084     GetSelection(&from, &to);
1085     if (from != to)
1086         Remove(from, to);
1087
1088     // Insert the text
1089     wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
1090
1091     GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
1092     // Scroll to cursor, but only if scrollbar thumb is at the very bottom
1093     // won't work when frozen, text view is not using m_buffer then
1094     if (!IsFrozen() && wxIsSameDouble(adj->value, adj->upper - adj->page_size))
1095     {
1096         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
1097                 gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
1098     }
1099 }
1100
1101 wxString wxTextCtrl::GetLineText( long lineNo ) const
1102 {
1103     wxString result;
1104     if ( IsMultiLine() )
1105     {
1106         GtkTextIter line;
1107         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
1108
1109         GtkTextIter end = line;
1110         // avoid skipping to the next line end if this one is empty
1111         if ( !gtk_text_iter_ends_line(&line) )
1112             gtk_text_iter_forward_to_line_end(&end);
1113
1114         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
1115         result = wxGTK_CONV_BACK(text);
1116     }
1117     else
1118     {
1119         if (lineNo == 0)
1120             result = GetValue();
1121     }
1122     return result;
1123 }
1124
1125 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
1126 {
1127   /* If you implement this, don't forget to update the documentation!
1128    * (file docs/latex/wx/text.tex) */
1129     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
1130 }
1131
1132 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
1133 {
1134     if ( IsMultiLine() )
1135     {
1136         GtkTextIter iter;
1137
1138         if (pos > GetLastPosition())
1139             return false;
1140
1141         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
1142
1143         if ( y )
1144             *y = gtk_text_iter_get_line(&iter);
1145         if ( x )
1146             *x = gtk_text_iter_get_line_offset(&iter);
1147     }
1148     else // single line control
1149     {
1150         if ( pos <= GTK_ENTRY(m_text)->text_length )
1151         {
1152             if ( y )
1153                 *y = 0;
1154             if ( x )
1155                 *x = pos;
1156         }
1157         else
1158         {
1159             // index out of bounds
1160             return false;
1161         }
1162     }
1163
1164     return true;
1165 }
1166
1167 long wxTextCtrl::XYToPosition(long x, long y ) const
1168 {
1169     if ( IsSingleLine() )
1170         return 0;
1171
1172     GtkTextIter iter;
1173     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1174         return -1;
1175
1176     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1177     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1178         return -1;
1179
1180     return gtk_text_iter_get_offset(&iter) + x;
1181 }
1182
1183 int wxTextCtrl::GetLineLength(long lineNo) const
1184 {
1185     if ( IsMultiLine() )
1186     {
1187         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1188         if (lineNo > last_line)
1189             return -1;
1190
1191         GtkTextIter iter;
1192         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1193         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1194         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1195     }
1196     else
1197     {
1198         wxString str = GetLineText (lineNo);
1199         return (int) str.length();
1200     }
1201 }
1202
1203 int wxTextCtrl::GetNumberOfLines() const
1204 {
1205     if ( IsMultiLine() )
1206     {
1207         return gtk_text_buffer_get_line_count( m_buffer );
1208     }
1209     else // single line
1210     {
1211         return 1;
1212     }
1213 }
1214
1215 void wxTextCtrl::SetInsertionPoint( long pos )
1216 {
1217     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1218
1219     if ( IsMultiLine() )
1220     {
1221         GtkTextIter iter;
1222         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1223         gtk_text_buffer_place_cursor( m_buffer, &iter );
1224         GtkTextMark* mark = gtk_text_buffer_get_insert(m_buffer);
1225         if (IsFrozen())
1226             // defer until Thaw, text view is not using m_buffer now
1227             m_showPositionOnThaw = mark;
1228         else
1229             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1230     }
1231     else // single line
1232     {
1233         wxTextEntry::SetInsertionPoint(pos);
1234     }
1235 }
1236
1237 void wxTextCtrl::SetEditable( bool editable )
1238 {
1239     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1240
1241     if ( IsMultiLine() )
1242     {
1243         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1244     }
1245     else // single line
1246     {
1247         wxTextEntry::SetEditable(editable);
1248     }
1249 }
1250
1251 bool wxTextCtrl::Enable( bool enable )
1252 {
1253     if (!wxWindowBase::Enable(enable))
1254     {
1255         // nothing to do
1256         return false;
1257     }
1258
1259     gtk_widget_set_sensitive( m_text, enable );
1260     SetCursor(enable ? wxCursor(wxCURSOR_IBEAM) : wxCursor());
1261
1262     return true;
1263 }
1264
1265 // wxGTK-specific: called recursively by Enable,
1266 // to give widgets an opportunity to correct their colours after they
1267 // have been changed by Enable
1268 void wxTextCtrl::OnEnabled(bool WXUNUSED(enable))
1269 {
1270     // If we have a custom background colour, we use this colour in both
1271     // disabled and enabled mode, or we end up with a different colour under the
1272     // text.
1273     wxColour oldColour = GetBackgroundColour();
1274     if (oldColour.Ok())
1275     {
1276         // Need to set twice or it'll optimize the useful stuff out
1277         if (oldColour == * wxWHITE)
1278             SetBackgroundColour(*wxBLACK);
1279         else
1280             SetBackgroundColour(*wxWHITE);
1281         SetBackgroundColour(oldColour);
1282     }
1283 }
1284
1285 void wxTextCtrl::MarkDirty()
1286 {
1287     m_modified = true;
1288 }
1289
1290 void wxTextCtrl::DiscardEdits()
1291 {
1292     m_modified = false;
1293 }
1294
1295 // ----------------------------------------------------------------------------
1296 // event handling
1297 // ----------------------------------------------------------------------------
1298
1299 void wxTextCtrl::EnableTextChangedEvents(bool enable)
1300 {
1301     if ( enable )
1302     {
1303         g_signal_handlers_unblock_by_func(GetTextObject(),
1304             (gpointer)gtk_text_changed_callback, this);
1305     }
1306     else // disable events
1307     {
1308         g_signal_handlers_block_by_func(GetTextObject(),
1309             (gpointer)gtk_text_changed_callback, this);
1310     }
1311 }
1312
1313 bool wxTextCtrl::IgnoreTextUpdate()
1314 {
1315     if ( m_countUpdatesToIgnore > 0 )
1316     {
1317         m_countUpdatesToIgnore--;
1318
1319         return true;
1320     }
1321
1322     return false;
1323 }
1324
1325 bool wxTextCtrl::MarkDirtyOnChange()
1326 {
1327     if ( m_dontMarkDirty )
1328     {
1329         m_dontMarkDirty = false;
1330
1331         return false;
1332     }
1333
1334     return true;
1335 }
1336
1337 void wxTextCtrl::SetSelection( long from, long to )
1338 {
1339     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1340
1341     if (from == -1 && to == -1)
1342     {
1343         from = 0;
1344         to = GetValue().length();
1345     }
1346
1347     if ( IsMultiLine() )
1348     {
1349         GtkTextIter fromi, toi;
1350         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1351         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1352
1353         gtk_text_buffer_select_range( m_buffer, &fromi, &toi );
1354     }
1355     else // single line
1356     {
1357         wxTextEntry::SetSelection(from, to);
1358     }
1359 }
1360
1361 void wxTextCtrl::ShowPosition( long pos )
1362 {
1363     if (IsMultiLine())
1364     {
1365         GtkTextIter iter;
1366         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, int(pos));
1367         GtkTextMark* mark = gtk_text_buffer_get_mark(m_buffer, "ShowPosition");
1368         gtk_text_buffer_move_mark(m_buffer, mark, &iter);
1369         if (IsFrozen())
1370             // defer until Thaw, text view is not using m_buffer now
1371             m_showPositionOnThaw = mark;
1372         else
1373             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1374     }
1375 }
1376
1377 wxTextCtrlHitTestResult
1378 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1379 {
1380     if ( !IsMultiLine() )
1381     {
1382         // not supported
1383         return wxTE_HT_UNKNOWN;
1384     }
1385
1386     int x, y;
1387     gtk_text_view_window_to_buffer_coords
1388     (
1389         GTK_TEXT_VIEW(m_text),
1390         GTK_TEXT_WINDOW_TEXT,
1391         pt.x, pt.y,
1392         &x, &y
1393     );
1394
1395     GtkTextIter iter;
1396     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1397     if ( pos )
1398         *pos = gtk_text_iter_get_offset(&iter);
1399
1400     return wxTE_HT_ON_TEXT;
1401 }
1402
1403 long wxTextCtrl::GetInsertionPoint() const
1404 {
1405     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1406
1407     if ( IsMultiLine() )
1408     {
1409         // There is no direct accessor for the cursor, but
1410         // internally, the cursor is the "mark" called
1411         // "insert" in the text view's btree structure.
1412
1413         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1414         GtkTextIter cursor;
1415         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1416
1417         return gtk_text_iter_get_offset( &cursor );
1418     }
1419     else
1420     {
1421         return wxTextEntry::GetInsertionPoint();
1422     }
1423 }
1424
1425 wxTextPos wxTextCtrl::GetLastPosition() const
1426 {
1427     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1428
1429     int pos = 0;
1430
1431     if ( IsMultiLine() )
1432     {
1433         GtkTextIter end;
1434         gtk_text_buffer_get_end_iter( m_buffer, &end );
1435
1436         pos = gtk_text_iter_get_offset( &end );
1437     }
1438     else // single line
1439     {
1440         pos = wxTextEntry::GetLastPosition();
1441     }
1442
1443     return (long)pos;
1444 }
1445
1446 void wxTextCtrl::Remove( long from, long to )
1447 {
1448     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1449
1450     if ( IsMultiLine() )
1451     {
1452         GtkTextIter fromi, toi;
1453         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1454         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1455
1456         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1457     }
1458     else // single line
1459     {
1460         wxTextEntry::Remove(from, to);
1461     }
1462 }
1463
1464 void wxTextCtrl::Cut()
1465 {
1466     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1467
1468     if ( IsMultiLine() )
1469         g_signal_emit_by_name (m_text, "cut-clipboard");
1470     else
1471         wxTextEntry::Cut();
1472 }
1473
1474 void wxTextCtrl::Copy()
1475 {
1476     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1477
1478     if ( IsMultiLine() )
1479         g_signal_emit_by_name (m_text, "copy-clipboard");
1480     else
1481         wxTextEntry::Copy();
1482 }
1483
1484 void wxTextCtrl::Paste()
1485 {
1486     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1487
1488     if ( IsMultiLine() )
1489         g_signal_emit_by_name (m_text, "paste-clipboard");
1490     else
1491         wxTextEntry::Paste();
1492 }
1493
1494 // If the return values from and to are the same, there is no
1495 // selection.
1496 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1497 {
1498     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1499
1500     if ( !IsMultiLine() )
1501     {
1502         wxTextEntry::GetSelection(fromOut, toOut);
1503         return;
1504     }
1505
1506     gint from, to;
1507
1508     GtkTextIter ifrom, ito;
1509     if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1510     {
1511         from = gtk_text_iter_get_offset(&ifrom);
1512         to = gtk_text_iter_get_offset(&ito);
1513
1514         if ( from > to )
1515         {
1516             // exchange them to be compatible with wxMSW
1517             gint tmp = from;
1518             from = to;
1519             to = tmp;
1520         }
1521     }
1522     else // no selection
1523     {
1524         from =
1525         to = GetInsertionPoint();
1526     }
1527
1528     if ( fromOut )
1529         *fromOut = from;
1530     if ( toOut )
1531         *toOut = to;
1532 }
1533
1534
1535 bool wxTextCtrl::IsEditable() const
1536 {
1537     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1538
1539     if ( IsMultiLine() )
1540     {
1541         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1542     }
1543     else
1544     {
1545         return wxTextEntry::IsEditable();
1546     }
1547 }
1548
1549 bool wxTextCtrl::IsModified() const
1550 {
1551     return m_modified;
1552 }
1553
1554 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1555 {
1556     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1557
1558     if ( key_event.GetKeyCode() == WXK_RETURN )
1559     {
1560         if ( HasFlag(wxTE_PROCESS_ENTER) )
1561         {
1562             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1563             event.SetEventObject(this);
1564             event.SetString(GetValue());
1565             if ( HandleWindowEvent(event) )
1566                 return;
1567         }
1568     }
1569
1570     key_event.Skip();
1571 }
1572
1573 GtkWidget* wxTextCtrl::GetConnectWidget()
1574 {
1575     return GTK_WIDGET(m_text);
1576 }
1577
1578 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1579 {
1580     if ( IsMultiLine() )
1581     {
1582         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1583                                         GTK_TEXT_WINDOW_TEXT );
1584     }
1585     else
1586     {
1587         return GTK_ENTRY(m_text)->text_area;
1588     }
1589 }
1590
1591 // the font will change for subsequent text insertiongs
1592 bool wxTextCtrl::SetFont( const wxFont &font )
1593 {
1594     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1595
1596     if ( !wxTextCtrlBase::SetFont(font) )
1597     {
1598         // font didn't change, nothing to do
1599         return false;
1600     }
1601
1602     if ( IsMultiLine() )
1603     {
1604         SetUpdateFont(true);
1605
1606         m_defaultStyle.SetFont(font);
1607
1608         ChangeFontGlobally();
1609     }
1610
1611     return true;
1612 }
1613
1614 void wxTextCtrl::ChangeFontGlobally()
1615 {
1616     // this method is very inefficient and hence should be called as rarely as
1617     // possible!
1618     //
1619     // TODO: it can be implemented much more efficiently for GTK2
1620     wxASSERT_MSG( IsMultiLine(),
1621                   wxT("shouldn't be called for single line controls") );
1622
1623     wxString value = GetValue();
1624     if ( !value.empty() )
1625     {
1626         SetUpdateFont(false);
1627
1628         Clear();
1629         AppendText(value);
1630     }
1631 }
1632
1633 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1634 {
1635     if ( !wxControl::SetForegroundColour(colour) )
1636         return false;
1637
1638     // update default fg colour too
1639     m_defaultStyle.SetTextColour(colour);
1640
1641     return true;
1642 }
1643
1644 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1645 {
1646     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1647
1648     if ( !wxControl::SetBackgroundColour( colour ) )
1649         return false;
1650
1651     if (!m_backgroundColour.Ok())
1652         return false;
1653
1654     // change active background color too
1655     m_defaultStyle.SetBackgroundColour( colour );
1656
1657     return true;
1658 }
1659
1660 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1661 {
1662     if ( IsMultiLine() )
1663     {
1664         if ( style.IsDefault() )
1665         {
1666             // nothing to do
1667             return true;
1668         }
1669
1670         gint l = gtk_text_buffer_get_char_count( m_buffer );
1671
1672         wxCHECK_MSG( start >= 0 && end <= l, false,
1673                      wxT("invalid range in wxTextCtrl::SetStyle") );
1674
1675         GtkTextIter starti, endi;
1676         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1677         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1678
1679         wxGtkTextApplyTagsFromAttr( m_widget, m_buffer, style, &starti, &endi );
1680
1681         return true;
1682     }
1683     //else: single line text controls don't support styles
1684
1685     return false;
1686 }
1687
1688 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1689 {
1690     gtk_widget_modify_style(m_text, style);
1691 }
1692
1693 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1694 {
1695     Cut();
1696 }
1697
1698 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1699 {
1700     Copy();
1701 }
1702
1703 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1704 {
1705     Paste();
1706 }
1707
1708 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1709 {
1710     Undo();
1711 }
1712
1713 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1714 {
1715     Redo();
1716 }
1717
1718 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1719 {
1720     event.Enable( CanCut() );
1721 }
1722
1723 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1724 {
1725     event.Enable( CanCopy() );
1726 }
1727
1728 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1729 {
1730     event.Enable( CanPaste() );
1731 }
1732
1733 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1734 {
1735     event.Enable( CanUndo() );
1736 }
1737
1738 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1739 {
1740     event.Enable( CanRedo() );
1741 }
1742
1743 wxSize wxTextCtrl::DoGetBestSize() const
1744 {
1745     // FIXME should be different for multi-line controls...
1746     wxSize ret( wxControl::DoGetBestSize() );
1747     wxSize best(80, ret.y);
1748     CacheBestSize(best);
1749     return best;
1750 }
1751
1752 // ----------------------------------------------------------------------------
1753 // freeze/thaw
1754 // ----------------------------------------------------------------------------
1755
1756 void wxTextCtrl::DoFreeze()
1757 {
1758     wxCHECK_RET(m_text != NULL, wxT("invalid text ctrl"));
1759
1760     wxWindow::DoFreeze();
1761
1762     if ( HasFlag(wxTE_MULTILINE) )
1763     {
1764         GTKFreezeWidget(m_text);
1765
1766         // removing buffer dramatically speeds up insertion:
1767         g_object_ref(m_buffer);
1768         GtkTextBuffer* buf_new = gtk_text_buffer_new(NULL);
1769         GtkTextMark* mark = GTK_TEXT_VIEW(m_text)->first_para_mark;
1770         gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), buf_new);
1771         // gtk_text_view_set_buffer adds its own reference
1772         g_object_unref(buf_new);
1773         // This mark should be deleted when the buffer is changed,
1774         // but it's not (in GTK+ up to at least 2.10.6).
1775         // Otherwise these anonymous marks start to build up in the buffer,
1776         // and Freeze takes longer and longer each time it is called.
1777         if (GTK_IS_TEXT_MARK(mark) && !gtk_text_mark_get_deleted(mark))
1778             gtk_text_buffer_delete_mark(m_buffer, mark);
1779     }
1780 }
1781
1782 void wxTextCtrl::DoThaw()
1783 {
1784     if ( HasFlag(wxTE_MULTILINE) )
1785     {
1786         // reattach buffer:
1787         gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1788         g_object_unref(m_buffer);
1789
1790         if (m_showPositionOnThaw != NULL)
1791         {
1792             gtk_text_view_scroll_mark_onscreen(
1793                 GTK_TEXT_VIEW(m_text), m_showPositionOnThaw);
1794             m_showPositionOnThaw = NULL;
1795         }
1796
1797         // and thaw the window
1798         GTKThawWidget(m_text);
1799     }
1800
1801     wxWindow::DoThaw();
1802 }
1803
1804 // ----------------------------------------------------------------------------
1805 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1806 // ----------------------------------------------------------------------------
1807
1808 // FIXME: when dragging on a link the sample gets an "Unknown event".
1809 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1810 // a buggy sample, or something else
1811 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1812 {
1813     event.Skip();
1814     if( !HasFlag(wxTE_AUTO_URL) )
1815         return;
1816
1817     gint x, y;
1818     GtkTextIter start, end;
1819     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1820                                                 "wxUrl");
1821
1822     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1823                                           event.GetX(), event.GetY(), &x, &y);
1824
1825     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1826     if (!gtk_text_iter_has_tag(&end, tag))
1827     {
1828         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1829                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1830         return;
1831     }
1832
1833     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1834                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1835
1836     start = end;
1837     if(!gtk_text_iter_begins_tag(&start, tag))
1838         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1839     if(!gtk_text_iter_ends_tag(&end, tag))
1840         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1841
1842     // Native context menu is probably not desired on an URL.
1843     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1844     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1845         event.Skip(false);
1846
1847     wxTextUrlEvent url_event(m_windowId, event,
1848                              gtk_text_iter_get_offset(&start),
1849                              gtk_text_iter_get_offset(&end));
1850
1851     InitCommandEvent(url_event);
1852     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1853     //event.Skip(!HandleWindowEvent(url_event));
1854     HandleWindowEvent(url_event);
1855 }
1856
1857 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
1858 {
1859     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
1860
1861     // GtkTextView starts a drag operation when left mouse button is pressed
1862     // and ends it when it is released and if it doesn't get the release event
1863     // the next click on a control results in an assertion failure inside
1864     // gtk_text_view_start_selection_drag() which simply *kills* the program
1865     // without anything we can do about it, so always let GTK+ have this event
1866     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
1867 }
1868
1869 // static
1870 wxVisualAttributes
1871 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1872 {
1873     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1874 }
1875
1876 #endif // wxUSE_TEXTCTRL