src/gtk/textctrl.cpp

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