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