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/scopeguard.h"
  26 #include "wx/strconv.h"
  27 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  28
  29 #include <sys/types.h>
  30 #include <sys/stat.h>
  31 #include <ctype.h>
  32
  33 #include "wx/gtk/private.h"
  34
  35 // ----------------------------------------------------------------------------
  36 // helpers
  37 // ----------------------------------------------------------------------------
  38
  39 extern "C" {
  40 static void wxGtkOnRemoveTag(GtkTextBuffer *buffer,
  41                              GtkTextTag *tag,
  42                              GtkTextIter * WXUNUSED(start),
  43                              GtkTextIter * WXUNUSED(end),
  44                              char *prefix)
  45 {
  46     gchar *name;
  47     g_object_get (tag, "name", &name, NULL);
  48
  49     if (!name || strncmp(name, prefix, strlen(prefix)))
  50         // anonymous tag or not starting with prefix - don't remove
  51         g_signal_stop_emission_by_name (buffer, "remove_tag");
  52
  53     g_free(name);
  54 }
  55 }
  56
  57 // remove all tags starting with the given prefix from the start..end range
  58 static void
  59 wxGtkTextRemoveTagsWithPrefix(GtkTextBuffer *text_buffer,
  60                               const char *prefix,
  61                               GtkTextIter *start,
  62                               GtkTextIter *end)
  63 {
  64     gulong remove_handler_id = g_signal_connect
  65                                (
  66                                 text_buffer,
  67                                 "remove_tag",
  68                                 G_CALLBACK(wxGtkOnRemoveTag),
  69                                 gpointer(prefix)
  70                                );
  71     gtk_text_buffer_remove_all_tags(text_buffer, start, end);
  72     g_signal_handler_disconnect(text_buffer, remove_handler_id);
  73 }
  74
  75 static void wxGtkTextApplyTagsFromAttr(GtkWidget *text,
  76                                        GtkTextBuffer *text_buffer,
  77                                        const wxTextAttr& attr,
  78                                        GtkTextIter *start,
  79                                        GtkTextIter *end)
  80 {
  81     static gchar buf[1024];
  82     GtkTextTag *tag;
  83
  84     if (attr.HasFont())
  85     {
  86         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXFONT", start, end);
  87
  88         wxFont font(attr.GetFont());
  89
  90         PangoFontDescription *font_description = font.GetNativeFontInfo()->description;
  91         wxGtkString font_string(pango_font_description_to_string(font_description));
  92         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string.c_str());
  93         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  94                                          buf );
  95         if (!tag)
  96             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  97                                               "font-desc", font_description,
  98                                               NULL );
  99         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 100
 101         if (font.GetUnderlined())
 102         {
 103             g_snprintf(buf, sizeof(buf), "WXFONTUNDERLINE");
 104             tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 105                                              buf );
 106             if (!tag)
 107                 tag = gtk_text_buffer_create_tag( text_buffer, buf,
 108                                                   "underline-set", TRUE,
 109                                                   "underline", PANGO_UNDERLINE_SINGLE,
 110                                                   NULL );
 111             gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 112         }
 113     }
 114
 115     if (attr.HasTextColour())
 116     {
 117         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXFORECOLOR", start, end);
 118
 119         const GdkColor *colFg = attr.GetTextColour().GetColor();
 120         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
 121                    colFg->red, colFg->green, colFg->blue);
 122         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 123                                          buf );
 124         if (!tag)
 125             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 126                                               "foreground-gdk", colFg, NULL );
 127         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 128     }
 129
 130     if (attr.HasBackgroundColour())
 131     {
 132         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXBACKCOLOR", start, end);
 133
 134         const GdkColor *colBg = attr.GetBackgroundColour().GetColor();
 135         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
 136                    colBg->red, colBg->green, colBg->blue);
 137         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 138                                          buf );
 139         if (!tag)
 140             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 141                                               "background-gdk", colBg, NULL );
 142         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 143     }
 144
 145     if (attr.HasAlignment())
 146     {
 147         GtkTextIter para_start, para_end = *end;
 148         gtk_text_buffer_get_iter_at_line( text_buffer,
 149                                           &para_start,
 150                                           gtk_text_iter_get_line(start) );
 151         gtk_text_iter_forward_line(&para_end);
 152
 153         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXALIGNMENT", &para_start, &para_end);
 154
 155         GtkJustification align;
 156         switch (attr.GetAlignment())
 157         {
 158             default:
 159                 align = GTK_JUSTIFY_LEFT;
 160                 break;
 161             case wxTEXT_ALIGNMENT_RIGHT:
 162                 align = GTK_JUSTIFY_RIGHT;
 163                 break;
 164             case wxTEXT_ALIGNMENT_CENTER:
 165                 align = GTK_JUSTIFY_CENTER;
 166                 break;
 167 // gtk+ doesn't support justify before gtk+-2.11.0 with pango-1.17 being available
 168 // (but if new enough pango isn't available it's a mere gtk warning)
 169 #if GTK_CHECK_VERSION(2,11,0)
 170             case wxTEXT_ALIGNMENT_JUSTIFIED:
 171                 if (!gtk_check_version(2,11,0))
 172                     align = GTK_JUSTIFY_FILL;
 173                 else
 174                     align = GTK_JUSTIFY_LEFT;
 175                 break;
 176 #endif
 177         }
 178
 179         g_snprintf(buf, sizeof(buf), "WXALIGNMENT %d", align);
 180         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 181                                          buf );
 182         if (!tag)
 183             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 184                                               "justification", align, NULL );
 185         gtk_text_buffer_apply_tag( text_buffer, tag, &para_start, &para_end );
 186     }
 187
 188     if (attr.HasLeftIndent())
 189     {
 190         // Indentation attribute
 191
 192         // Clear old indentation tags
 193         GtkTextIter para_start, para_end = *end;
 194         gtk_text_buffer_get_iter_at_line( text_buffer,
 195                                           &para_start,
 196                                           gtk_text_iter_get_line(start) );
 197         gtk_text_iter_forward_line(&para_end);
 198
 199         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXINDENT", &para_start, &para_end);
 200
 201         // Convert indent from 1/10th of a mm into pixels
 202         float factor =
 203             (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 204                       gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 205
 206         const int indent = (int)(factor * attr.GetLeftIndent());
 207         const int subIndent = (int)(factor * attr.GetLeftSubIndent());
 208
 209         gint gindent;
 210         gint gsubindent;
 211
 212         if (subIndent >= 0)
 213         {
 214             gindent = indent;
 215             gsubindent = -subIndent;
 216         }
 217         else
 218         {
 219             gindent = -subIndent;
 220             gsubindent = indent;
 221         }
 222
 223         g_snprintf(buf, sizeof(buf), "WXINDENT %d %d", gindent, gsubindent);
 224         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 225                                         buf );
 226         if (!tag)
 227             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 228                                               "left-margin", gindent, "indent", gsubindent, NULL );
 229         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 230     }
 231
 232     if (attr.HasTabs())
 233     {
 234         // Set tab stops
 235
 236         // Clear old tabs
 237         GtkTextIter para_start, para_end = *end;
 238         gtk_text_buffer_get_iter_at_line( text_buffer,
 239                                           &para_start,
 240                                           gtk_text_iter_get_line(start) );
 241         gtk_text_iter_forward_line(&para_end);
 242
 243         wxGtkTextRemoveTagsWithPrefix(text_buffer, "WXTABS", &para_start, &para_end);
 244
 245         const wxArrayInt& tabs = attr.GetTabs();
 246
 247         wxString tagname = wxT("WXTABS");
 248         g_snprintf(buf, sizeof(buf), "WXTABS");
 249         for (size_t i = 0; i < tabs.GetCount(); i++)
 250             tagname += wxString::Format(wxT(" %d"), tabs[i]);
 251
 252         const wxWX2MBbuf buftag = tagname.utf8_str();
 253
 254         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 255                                         buftag );
 256         if (!tag)
 257         {
 258             // Factor to convert from 1/10th of a mm into pixels
 259             float factor =
 260                 (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 261                           gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 262
 263             PangoTabArray* tabArray = pango_tab_array_new(tabs.GetCount(), TRUE);
 264             for (size_t i = 0; i < tabs.GetCount(); i++)
 265                 pango_tab_array_set_tab(tabArray, i, PANGO_TAB_LEFT, (gint)(tabs[i] * factor));
 266             tag = gtk_text_buffer_create_tag( text_buffer, buftag,
 267                                               "tabs", tabArray, NULL );
 268             pango_tab_array_free(tabArray);
 269         }
 270         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 271     }
 272 }
 273
 274 static void wxGtkTextInsert(GtkWidget *text,
 275                             GtkTextBuffer *text_buffer,
 276                             const wxTextAttr& attr,
 277                             const wxCharBuffer& buffer)
 278
 279 {
 280     gint start_offset;
 281     GtkTextIter iter, start;
 282
 283     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 284                                      gtk_text_buffer_get_insert (text_buffer) );
 285     start_offset = gtk_text_iter_get_offset (&iter);
 286     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 287
 288     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 289
 290     wxGtkTextApplyTagsFromAttr(text, text_buffer, attr, &start, &iter);
 291 }
 292
 293 // Implementation of wxTE_AUTO_URL for wxGTK2 by Mart Raudsepp,
 294
 295 extern "C" {
 296 static void
 297 au_apply_tag_callback(GtkTextBuffer *buffer,
 298                       GtkTextTag *tag,
 299                       GtkTextIter * WXUNUSED(start),
 300                       GtkTextIter * WXUNUSED(end),
 301                       gpointer WXUNUSED(textctrl))
 302 {
 303     if(tag == gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl"))
 304         g_signal_stop_emission_by_name (buffer, "apply_tag");
 305 }
 306 }
 307
 308 //-----------------------------------------------------------------------------
 309 //  GtkTextCharPredicates for gtk_text_iter_*_find_char
 310 //-----------------------------------------------------------------------------
 311
 312 extern "C" {
 313 static gboolean
 314 pred_whitespace(gunichar ch, gpointer WXUNUSED(user_data))
 315 {
 316     return g_unichar_isspace(ch);
 317 }
 318 }
 319
 320 extern "C" {
 321 static gboolean
 322 pred_non_whitespace (gunichar ch, gpointer WXUNUSED(user_data))
 323 {
 324     return !g_unichar_isspace(ch);
 325 }
 326 }
 327
 328 extern "C" {
 329 static gboolean
 330 pred_nonpunct (gunichar ch, gpointer WXUNUSED(user_data))
 331 {
 332     return !g_unichar_ispunct(ch);
 333 }
 334 }
 335
 336 extern "C" {
 337 static gboolean
 338 pred_nonpunct_or_slash (gunichar ch, gpointer WXUNUSED(user_data))
 339 {
 340     return !g_unichar_ispunct(ch) || ch == '/';
 341 }
 342 }
 343
 344 //-----------------------------------------------------------------------------
 345 //  Check for links between s and e and correct tags as necessary
 346 //-----------------------------------------------------------------------------
 347
 348 // This function should be made match better while being efficient at one point.
 349 // Most probably with a row of regular expressions.
 350 extern "C" {
 351 static void
 352 au_check_word( GtkTextIter *s, GtkTextIter *e )
 353 {
 354     static const char *const URIPrefixes[] =
 355     {
 356         "http://",
 357         "ftp://",
 358         "www.",
 359         "ftp.",
 360         "mailto://",
 361         "https://",
 362         "file://",
 363         "nntp://",
 364         "news://",
 365         "telnet://",
 366         "mms://",
 367         "gopher://",
 368         "prospero://",
 369         "wais://",
 370     };
 371
 372     GtkTextIter start = *s, end = *e;
 373     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 374
 375     // Get our special link tag
 376     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 377
 378     // Get rid of punctuation from beginning and end.
 379     // Might want to move this to au_check_range if an improved link checking doesn't
 380     // use some intelligent punctuation checking itself (beware of undesired iter modifications).
 381     if(g_unichar_ispunct( gtk_text_iter_get_char( &start ) ) )
 382         gtk_text_iter_forward_find_char( &start, pred_nonpunct, NULL, e );
 383
 384     gtk_text_iter_backward_find_char( &end, pred_nonpunct_or_slash, NULL, &start );
 385     gtk_text_iter_forward_char(&end);
 386
 387     wxGtkString text(gtk_text_iter_get_text( &start, &end ));
 388     size_t len = strlen(text), prefix_len;
 389     size_t n;
 390
 391     for( n = 0; n < WXSIZEOF(URIPrefixes); ++n )
 392     {
 393         prefix_len = strlen(URIPrefixes[n]);
 394         if((len > prefix_len) && !strncasecmp(text, URIPrefixes[n], prefix_len))
 395             break;
 396     }
 397
 398     if(n < WXSIZEOF(URIPrefixes))
 399     {
 400         gulong signal_id = g_signal_handler_find (buffer,
 401                                                   (GSignalMatchType) (G_SIGNAL_MATCH_FUNC),
 402                                                   0, 0, NULL,
 403                                                   (gpointer)au_apply_tag_callback, NULL);
 404
 405         g_signal_handler_block (buffer, signal_id);
 406         gtk_text_buffer_apply_tag(buffer, tag, &start, &end);
 407         g_signal_handler_unblock (buffer, signal_id);
 408     }
 409 }
 410 }
 411
 412 extern "C" {
 413 static void
 414 au_check_range(GtkTextIter *s,
 415                GtkTextIter *range_end)
 416 {
 417     GtkTextIter range_start = *s;
 418     GtkTextIter word_end;
 419     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 420     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 421
 422     gtk_text_buffer_remove_tag(buffer, tag, s, range_end);
 423
 424     if(g_unichar_isspace(gtk_text_iter_get_char(&range_start)))
 425         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 426
 427     while(!gtk_text_iter_equal(&range_start, range_end))
 428     {
 429         word_end = range_start;
 430         gtk_text_iter_forward_find_char(&word_end, pred_whitespace, NULL, range_end);
 431
 432         // Now we should have a word delimited by range_start and word_end, correct link tags
 433         au_check_word(&range_start, &word_end);
 434
 435         range_start = word_end;
 436         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 437     }
 438 }
 439 }
 440
 441 //-----------------------------------------------------------------------------
 442 //  "insert-text" for GtkTextBuffer
 443 //-----------------------------------------------------------------------------
 444
 445 extern "C" {
 446 static void
 447 au_insert_text_callback(GtkTextBuffer * WXUNUSED(buffer),
 448                         GtkTextIter *end,
 449                         gchar *text,
 450                         gint len,
 451                         wxTextCtrl *win)
 452 {
 453     if (!len || !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 454         return;
 455
 456     GtkTextIter start = *end;
 457     gtk_text_iter_backward_chars(&start, g_utf8_strlen(text, len));
 458
 459     GtkTextIter line_start = start;
 460     GtkTextIter line_end = *end;
 461     GtkTextIter words_start = start;
 462     GtkTextIter words_end = *end;
 463
 464     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(&start));
 465     gtk_text_iter_forward_to_line_end(&line_end);
 466     gtk_text_iter_backward_find_char(&words_start, pred_whitespace, NULL, &line_start);
 467     gtk_text_iter_forward_find_char(&words_end, pred_whitespace, NULL, &line_end);
 468
 469     au_check_range(&words_start, &words_end);
 470 }
 471 }
 472
 473 //-----------------------------------------------------------------------------
 474 //  "delete-range" for GtkTextBuffer
 475 //-----------------------------------------------------------------------------
 476
 477 extern "C" {
 478 static void
 479 au_delete_range_callback(GtkTextBuffer * WXUNUSED(buffer),
 480                          GtkTextIter *start,
 481                          GtkTextIter *end,
 482                          wxTextCtrl *win)
 483 {
 484     if( !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 485         return;
 486
 487     GtkTextIter line_start = *start, line_end = *end;
 488
 489     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(start));
 490     gtk_text_iter_forward_to_line_end(&line_end);
 491     gtk_text_iter_backward_find_char(start, pred_whitespace, NULL, &line_start);
 492     gtk_text_iter_forward_find_char(end, pred_whitespace, NULL, &line_end);
 493
 494     au_check_range(start, end);
 495 }
 496 }
 497
 498 //-----------------------------------------------------------------------------
 499 //  "populate_popup" from text control and "unmap" from its poup menu
 500 //-----------------------------------------------------------------------------
 501
 502 extern "C" {
 503 static void
 504 gtk_textctrl_popup_unmap( GtkMenu *WXUNUSED(menu), wxTextCtrl* win )
 505 {
 506     win->GTKEnableFocusOutEvent();
 507 }
 508 }
 509
 510 extern "C" {
 511 static void
 512 gtk_textctrl_populate_popup( GtkEntry *WXUNUSED(entry), GtkMenu *menu, wxTextCtrl *win )
 513 {
 514     win->GTKDisableFocusOutEvent();
 515
 516     g_signal_connect (menu, "unmap", G_CALLBACK (gtk_textctrl_popup_unmap), win );
 517 }
 518 }
 519
 520 //-----------------------------------------------------------------------------
 521 //  "changed"
 522 //-----------------------------------------------------------------------------
 523
 524 extern "C" {
 525 static void
 526 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
 527 {
 528     if ( win->IgnoreTextUpdate() )
 529         return;
 530
 531     if (!win->m_hasVMT) return;
 532
 533     if ( win->MarkDirtyOnChange() )
 534         win->MarkDirty();
 535
 536     win->SendTextUpdatedEvent();
 537 }
 538 }
 539
 540 //-----------------------------------------------------------------------------
 541 //  clipboard events: "copy-clipboard", "cut-clipboard", "paste-clipboard"
 542 //-----------------------------------------------------------------------------
 543
 544 // common part of the event handlers below
 545 static void
 546 handle_text_clipboard_callback( GtkWidget *widget, wxTextCtrl *win,
 547                                 wxEventType eventType, const gchar * signal_name)
 548 {
 549     wxClipboardTextEvent event( eventType, win->GetId() );
 550     event.SetEventObject( win );
 551     if ( win->HandleWindowEvent( event ) )
 552     {
 553         // don't let the default processing to take place if we did something
 554         // ourselves in the event handler
 555         g_signal_stop_emission_by_name (widget, signal_name);
 556     }
 557 }
 558
 559 extern "C" {
 560 static void
 561 gtk_copy_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 562 {
 563     handle_text_clipboard_callback(
 564         widget, win, wxEVT_COMMAND_TEXT_COPY, "copy-clipboard" );
 565 }
 566
 567 static void
 568 gtk_cut_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 569 {
 570     handle_text_clipboard_callback(
 571         widget, win, wxEVT_COMMAND_TEXT_CUT, "cut-clipboard" );
 572 }
 573
 574 static void
 575 gtk_paste_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 576 {
 577     handle_text_clipboard_callback(
 578         widget, win, wxEVT_COMMAND_TEXT_PASTE, "paste-clipboard" );
 579 }
 580 }
 581
 582 //-----------------------------------------------------------------------------
 583 //  "mark_set"
 584 //-----------------------------------------------------------------------------
 585
 586 extern "C" {
 587 static void mark_set(GtkTextBuffer*, GtkTextIter*, GtkTextMark* mark, GSList** markList)
 588 {
 589     if (gtk_text_mark_get_name(mark) == NULL)
 590         *markList = g_slist_prepend(*markList, mark);
 591 }
 592 }
 593
 594 //-----------------------------------------------------------------------------
 595 //  wxTextCtrl
 596 //-----------------------------------------------------------------------------
 597
 598 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 599     EVT_CHAR(wxTextCtrl::OnChar)
 600
 601     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 602     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 603     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 604     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 605     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 606
 607     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 608     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 609     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 610     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 611     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 612
 613     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 614     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 615     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 616     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 617     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 618     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 619     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 620     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 621     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 622 END_EVENT_TABLE()
 623
 624 void wxTextCtrl::Init()
 625 {
 626     m_dontMarkDirty =
 627     m_modified = false;
 628
 629     m_countUpdatesToIgnore = 0;
 630
 631     SetUpdateFont(false);
 632
 633     m_text = NULL;
 634     m_showPositionOnThaw = NULL;
 635     m_anonymousMarkList = NULL;
 636 }
 637
 638 wxTextCtrl::~wxTextCtrl()
 639 {
 640     if (m_anonymousMarkList)
 641         g_slist_free(m_anonymousMarkList);
 642 }
 643
 644 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 645                         wxWindowID id,
 646                         const wxString &value,
 647                         const wxPoint &pos,
 648                         const wxSize &size,
 649                         long style,
 650                         const wxValidator& validator,
 651                         const wxString &name )
 652 {
 653     Init();
 654
 655     Create( parent, id, value, pos, size, style, validator, name );
 656 }
 657
 658 bool wxTextCtrl::Create( wxWindow *parent,
 659                          wxWindowID id,
 660                          const wxString &value,
 661                          const wxPoint &pos,
 662                          const wxSize &size,
 663                          long style,
 664                          const wxValidator& validator,
 665                          const wxString &name )
 666 {
 667     if (!PreCreation( parent, pos, size ) ||
 668         !CreateBase( parent, id, pos, size, style, validator, name ))
 669     {
 670         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 671         return false;
 672     }
 673
 674     bool multi_line = (style & wxTE_MULTILINE) != 0;
 675
 676     if (multi_line)
 677     {
 678         m_buffer = gtk_text_buffer_new(NULL);
 679         gulong sig_id = g_signal_connect(m_buffer, "mark_set", G_CALLBACK(mark_set), &m_anonymousMarkList);
 680         // Create view
 681         m_text = gtk_text_view_new_with_buffer(m_buffer);
 682         // gtk_text_view_set_buffer adds its own reference
 683         g_object_unref(m_buffer);
 684         g_signal_handler_disconnect(m_buffer, sig_id);
 685
 686         // create "ShowPosition" marker
 687         GtkTextIter iter;
 688         gtk_text_buffer_get_start_iter(m_buffer, &iter);
 689         gtk_text_buffer_create_mark(m_buffer, "ShowPosition", &iter, true);
 690
 691         // create scrolled window
 692         m_widget = gtk_scrolled_window_new( NULL, NULL );
 693         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 694                                         GTK_POLICY_AUTOMATIC,
 695                                         style & wxTE_NO_VSCROLL
 696                                             ? GTK_POLICY_NEVER
 697                                             : GTK_POLICY_AUTOMATIC );
 698         // for ScrollLines/Pages
 699         m_scrollBar[1] = GTK_RANGE(gtk_scrolled_window_get_vscrollbar(GTK_SCROLLED_WINDOW(m_widget)));
 700
 701         // Insert view into scrolled window
 702         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 703
 704         GTKSetWrapMode();
 705
 706         GTKScrolledWindowSetBorder(m_widget, style);
 707
 708         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 709
 710         gtk_widget_set_can_focus(m_widget, FALSE);
 711     }
 712     else
 713     {
 714         // a single-line text control: no need for scrollbars
 715         m_widget =
 716         m_text = gtk_entry_new();
 717         // work around probable bug in GTK+ 2.18 when calling WriteText on a
 718         // new, empty control, see http://trac.wxwidgets.org/ticket/11409
 719         gtk_entry_get_text((GtkEntry*)m_text);
 720
 721         if (style & wxNO_BORDER)
 722             g_object_set (m_text, "has-frame", FALSE, NULL);
 723
 724     }
 725     g_object_ref(m_widget);
 726
 727     m_parent->DoAddChild( this );
 728
 729     m_focusWidget = m_text;
 730
 731     PostCreation(size);
 732
 733     if (multi_line)
 734     {
 735         gtk_widget_show(m_text);
 736     }
 737
 738     // We want to be notified about text changes.
 739     if (multi_line)
 740     {
 741         g_signal_connect (m_buffer, "changed",
 742                           G_CALLBACK (gtk_text_changed_callback), this);
 743     }
 744     else
 745     {
 746         g_signal_connect (m_text, "changed",
 747                           G_CALLBACK (gtk_text_changed_callback), this);
 748     }
 749
 750     // Catch to disable focus out handling
 751     g_signal_connect (m_text, "populate_popup",
 752                       G_CALLBACK (gtk_textctrl_populate_popup),
 753                       this);
 754
 755     if (!value.empty())
 756     {
 757         SetValue( value );
 758     }
 759
 760     if (style & wxTE_PASSWORD)
 761         GTKSetVisibility();
 762
 763     if (style & wxTE_READONLY)
 764         GTKSetEditable();
 765
 766     // left justification (alignment) is the default anyhow
 767     if ( style & (wxTE_RIGHT | wxTE_CENTRE) )
 768         GTKSetJustification();
 769
 770     if (multi_line)
 771     {
 772         // Handle URLs on multi-line controls with wxTE_AUTO_URL style
 773         if (style & wxTE_AUTO_URL)
 774         {
 775             GtkTextIter start, end;
 776
 777             // We create our wxUrl tag here for slight efficiency gain - we
 778             // don't have to check for the tag existance in callbacks,
 779             // hereby it's guaranteed to exist.
 780             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 781                                        "foreground", "blue",
 782                                        "underline", PANGO_UNDERLINE_SINGLE,
 783                                        NULL);
 784
 785             // Check for URLs after each text change
 786             g_signal_connect_after (m_buffer, "insert_text",
 787                                     G_CALLBACK (au_insert_text_callback), this);
 788             g_signal_connect_after (m_buffer, "delete_range",
 789                                     G_CALLBACK (au_delete_range_callback), this);
 790
 791             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 792             // block this callback temporarily. This takes care of gtk+ internal
 793             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 794             // which is undesired because only a part of the URL might be copied.
 795             // The insert-text signal emitted inside it will take care of newly formed
 796             // or wholly copied URLs.
 797             g_signal_connect (m_buffer, "apply_tag",
 798                               G_CALLBACK (au_apply_tag_callback), NULL);
 799
 800             // Check for URLs in the initial string passed to Create
 801             gtk_text_buffer_get_start_iter(m_buffer, &start);
 802             gtk_text_buffer_get_end_iter(m_buffer, &end);
 803             au_check_range(&start, &end);
 804         }
 805     }
 806     else // single line
 807     {
 808         // do the right thing with Enter presses depending on whether we have
 809         // wxTE_PROCESS_ENTER or not
 810         GTKSetActivatesDefault();
 811     }
 812
 813
 814     g_signal_connect (m_text, "copy-clipboard",
 815                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 816     g_signal_connect (m_text, "cut-clipboard",
 817                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 818     g_signal_connect (m_text, "paste-clipboard",
 819                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 820
 821     m_cursor = wxCursor( wxCURSOR_IBEAM );
 822
 823     return true;
 824 }
 825
 826 GtkEditable *wxTextCtrl::GetEditable() const
 827 {
 828     wxCHECK_MSG( IsSingleLine(), NULL, "shouldn't be called for multiline" );
 829
 830     return GTK_EDITABLE(m_text);
 831 }
 832
 833 GtkEntry *wxTextCtrl::GetEntry() const
 834 {
 835     return GTK_ENTRY(m_text);
 836 }
 837
 838 // ----------------------------------------------------------------------------
 839 // flags handling
 840 // ----------------------------------------------------------------------------
 841
 842 void wxTextCtrl::GTKSetEditable()
 843 {
 844     gboolean editable = !HasFlag(wxTE_READONLY);
 845     if ( IsSingleLine() )
 846         gtk_editable_set_editable(GTK_EDITABLE(m_text), editable);
 847     else
 848         gtk_text_view_set_editable(GTK_TEXT_VIEW(m_text), editable);
 849 }
 850
 851 void wxTextCtrl::GTKSetVisibility()
 852 {
 853     wxCHECK_RET( IsSingleLine(),
 854                  "wxTE_PASSWORD is for single line text controls only" );
 855
 856     gtk_entry_set_visibility(GTK_ENTRY(m_text), !HasFlag(wxTE_PASSWORD));
 857 }
 858
 859 void wxTextCtrl::GTKSetActivatesDefault()
 860 {
 861     wxCHECK_RET( IsSingleLine(),
 862                  "wxTE_PROCESS_ENTER is for single line text controls only" );
 863
 864     gtk_entry_set_activates_default(GTK_ENTRY(m_text),
 865                                     !HasFlag(wxTE_PROCESS_ENTER));
 866 }
 867
 868 void wxTextCtrl::GTKSetWrapMode()
 869 {
 870     // no wrapping in single line controls
 871     if ( !IsMultiLine() )
 872         return;
 873
 874     // translate wx wrapping style to GTK+
 875     GtkWrapMode wrap;
 876     if ( HasFlag( wxTE_DONTWRAP ) )
 877         wrap = GTK_WRAP_NONE;
 878     else if ( HasFlag( wxTE_CHARWRAP ) )
 879         wrap = GTK_WRAP_CHAR;
 880     else if ( HasFlag( wxTE_WORDWRAP ) )
 881         wrap = GTK_WRAP_WORD;
 882     else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 883         wrap = GTK_WRAP_WORD_CHAR;
 884
 885     gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 886 }
 887
 888 void wxTextCtrl::GTKSetJustification()
 889 {
 890     if ( IsMultiLine() )
 891     {
 892         GtkJustification just;
 893         if ( HasFlag(wxTE_RIGHT) )
 894             just = GTK_JUSTIFY_RIGHT;
 895         else if ( HasFlag(wxTE_CENTRE) )
 896             just = GTK_JUSTIFY_CENTER;
 897         else // wxTE_LEFT == 0
 898             just = GTK_JUSTIFY_LEFT;
 899
 900         gtk_text_view_set_justification(GTK_TEXT_VIEW(m_text), just);
 901     }
 902     else // single line
 903     {
 904         gfloat align;
 905         if ( HasFlag(wxTE_RIGHT) )
 906             align = 1.0;
 907         else if ( HasFlag(wxTE_CENTRE) )
 908             align = 0.5;
 909         else // single line
 910             align = 0.0;
 911
 912         gtk_entry_set_alignment(GTK_ENTRY(m_text), align);
 913     }
 914 }
 915
 916 void wxTextCtrl::SetWindowStyleFlag(long style)
 917 {
 918     long styleOld = GetWindowStyleFlag();
 919
 920     wxTextCtrlBase::SetWindowStyleFlag(style);
 921
 922     if ( (style & wxTE_READONLY) != (styleOld & wxTE_READONLY) )
 923         GTKSetEditable();
 924
 925     if ( (style & wxTE_PASSWORD) != (styleOld & wxTE_PASSWORD) )
 926         GTKSetVisibility();
 927
 928     if ( (style & wxTE_PROCESS_ENTER) != (styleOld & wxTE_PROCESS_ENTER) )
 929         GTKSetActivatesDefault();
 930
 931     static const long flagsWrap = wxTE_WORDWRAP | wxTE_CHARWRAP | wxTE_DONTWRAP;
 932     if ( (style & flagsWrap) != (styleOld & flagsWrap) )
 933         GTKSetWrapMode();
 934
 935     static const long flagsAlign = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 936     if ( (style & flagsAlign) != (styleOld & flagsAlign) )
 937         GTKSetJustification();
 938 }
 939
 940 // ----------------------------------------------------------------------------
 941 // control value
 942 // ----------------------------------------------------------------------------
 943
 944 wxString wxTextCtrl::GetValue() const
 945 {
 946     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 947
 948     if ( IsMultiLine() )
 949     {
 950         GtkTextIter start;
 951         gtk_text_buffer_get_start_iter( m_buffer, &start );
 952         GtkTextIter end;
 953         gtk_text_buffer_get_end_iter( m_buffer, &end );
 954         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 955
 956         return wxGTK_CONV_BACK(text);
 957     }
 958     else // single line
 959     {
 960         return wxTextEntry::GetValue();
 961     }
 962 }
 963
 964 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 965 {
 966     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 967     // encoding?
 968
 969     // first check the default text style (we intentionally don't check the
 970     // style for the current position as it doesn't make sense for SetValue())
 971     const wxTextAttr& style = GetDefaultStyle();
 972     wxFontEncoding enc = style.HasFontEncoding() ? style.GetFontEncoding()
 973                                          : wxFONTENCODING_SYSTEM;
 974
 975     // fall back to the controls font if no style
 976     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 977         enc = GetFont().GetEncoding();
 978
 979     return enc;
 980 }
 981
 982 bool wxTextCtrl::IsEmpty() const
 983 {
 984     if ( IsMultiLine() )
 985         return gtk_text_buffer_get_char_count(m_buffer) == 0;
 986
 987     return wxTextEntry::IsEmpty();
 988 }
 989
 990 void wxTextCtrl::DoSetValue( const wxString &value, int flags )
 991 {
 992     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 993
 994     m_modified = false;
 995
 996     if ( !IsMultiLine() )
 997     {
 998         wxTextEntry::DoSetValue(value, flags);
 999         return;
1000     }
1001
1002     if (value.IsEmpty())
1003     {
1004         if ( !(flags & SetValue_SendEvent) )
1005             EnableTextChangedEvents(false);
1006
1007         gtk_text_buffer_set_text( m_buffer, "", 0 );
1008
1009         if ( !(flags & SetValue_SendEvent) )
1010             EnableTextChangedEvents(true);
1011
1012         return;
1013     }
1014
1015 #if wxUSE_UNICODE
1016     const wxCharBuffer buffer(value.utf8_str());
1017 #else
1018     wxFontEncoding enc = m_defaultStyle.HasFont()
1019                             ? m_defaultStyle.GetFont().GetEncoding()
1020                             : wxFONTENCODING_SYSTEM;
1021     if ( enc == wxFONTENCODING_SYSTEM )
1022         enc = GetTextEncoding();
1023
1024     const wxCharBuffer buffer(wxGTK_CONV_ENC(value, enc));
1025     if ( !buffer )
1026     {
1027         // see comment in WriteText() as to why we must warn the user about
1028         // this
1029         wxLogWarning(_("Failed to set text in the text control."));
1030         return;
1031     }
1032 #endif
1033
1034     if ( !(flags & SetValue_SendEvent) )
1035     {
1036         EnableTextChangedEvents(false);
1037     }
1038
1039     gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
1040
1041     if ( !m_defaultStyle.IsDefault() )
1042     {
1043         GtkTextIter start, end;
1044         gtk_text_buffer_get_bounds( m_buffer, &start, &end );
1045         wxGtkTextApplyTagsFromAttr(m_widget, m_buffer, m_defaultStyle,
1046                                    &start, &end);
1047     }
1048
1049     if ( !(flags & SetValue_SendEvent) )
1050     {
1051         EnableTextChangedEvents(true);
1052     }
1053 }
1054
1055 void wxTextCtrl::WriteText( const wxString &text )
1056 {
1057     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1058
1059     // we're changing the text programmatically
1060     DontMarkDirtyOnNextChange();
1061
1062     if ( !IsMultiLine() )
1063     {
1064         wxTextEntry::WriteText(text);
1065         return;
1066     }
1067
1068 #if wxUSE_UNICODE
1069     const wxCharBuffer buffer(text.utf8_str());
1070 #else
1071     // check if we have a specific style for the current position
1072     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
1073     wxTextAttr style;
1074     if ( GetStyle(GetInsertionPoint(), style) && style.HasFontEncoding() )
1075     {
1076         enc = style.GetFontEncoding();
1077     }
1078
1079     if ( enc == wxFONTENCODING_SYSTEM )
1080         enc = GetTextEncoding();
1081
1082     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
1083     if ( !buffer )
1084     {
1085         // we must log an error here as losing the text like this can be a
1086         // serious problem (e.g. imagine the document edited by user being
1087         // empty instead of containing the correct text)
1088         wxLogWarning(_("Failed to insert text in the control."));
1089         return;
1090     }
1091 #endif
1092
1093     // First remove the selection if there is one
1094     // TODO:  Is there an easier GTK specific way to do this?
1095     long from, to;
1096     GetSelection(&from, &to);
1097     if (from != to)
1098         Remove(from, to);
1099
1100     // Insert the text
1101     wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
1102
1103     // Scroll to cursor, but only if scrollbar thumb is at the very bottom
1104     // won't work when frozen, text view is not using m_buffer then
1105     if (!IsFrozen())
1106     {
1107         GtkAdjustment* adj = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(m_widget));
1108         const double value = gtk_adjustment_get_value(adj);
1109         const double upper = gtk_adjustment_get_upper(adj);
1110         const double page_size = gtk_adjustment_get_page_size(adj);
1111         if (wxIsSameDouble(value, upper - page_size))
1112         {
1113             gtk_text_view_scroll_to_mark(GTK_TEXT_VIEW(m_text),
1114                 gtk_text_buffer_get_insert(m_buffer), 0, false, 0, 1);
1115         }
1116     }
1117 }
1118
1119 wxString wxTextCtrl::GetLineText( long lineNo ) const
1120 {
1121     wxString result;
1122     if ( IsMultiLine() )
1123     {
1124         GtkTextIter line;
1125         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
1126
1127         GtkTextIter end = line;
1128         // avoid skipping to the next line end if this one is empty
1129         if ( !gtk_text_iter_ends_line(&line) )
1130             gtk_text_iter_forward_to_line_end(&end);
1131
1132         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
1133         result = wxGTK_CONV_BACK(text);
1134     }
1135     else
1136     {
1137         if (lineNo == 0)
1138             result = GetValue();
1139     }
1140     return result;
1141 }
1142
1143 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
1144 {
1145   /* If you implement this, don't forget to update the documentation!
1146    * (file docs/latex/wx/text.tex) */
1147     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
1148 }
1149
1150 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
1151 {
1152     if ( IsMultiLine() )
1153     {
1154         GtkTextIter iter;
1155
1156         if (pos > GetLastPosition())
1157             return false;
1158
1159         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
1160
1161         if ( y )
1162             *y = gtk_text_iter_get_line(&iter);
1163         if ( x )
1164             *x = gtk_text_iter_get_line_offset(&iter);
1165     }
1166     else // single line control
1167     {
1168         if (pos <= gtk_entry_get_text_length(GTK_ENTRY(m_text)))
1169         {
1170             if ( y )
1171                 *y = 0;
1172             if ( x )
1173                 *x = pos;
1174         }
1175         else
1176         {
1177             // index out of bounds
1178             return false;
1179         }
1180     }
1181
1182     return true;
1183 }
1184
1185 long wxTextCtrl::XYToPosition(long x, long y ) const
1186 {
1187     if ( IsSingleLine() )
1188         return 0;
1189
1190     GtkTextIter iter;
1191     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1192         return -1;
1193
1194     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1195     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1196         return -1;
1197
1198     return gtk_text_iter_get_offset(&iter) + x;
1199 }
1200
1201 int wxTextCtrl::GetLineLength(long lineNo) const
1202 {
1203     if ( IsMultiLine() )
1204     {
1205         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1206         if (lineNo > last_line)
1207             return -1;
1208
1209         GtkTextIter iter;
1210         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1211         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1212         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1213     }
1214     else
1215     {
1216         wxString str = GetLineText (lineNo);
1217         return (int) str.length();
1218     }
1219 }
1220
1221 int wxTextCtrl::GetNumberOfLines() const
1222 {
1223     if ( IsMultiLine() )
1224     {
1225         return gtk_text_buffer_get_line_count( m_buffer );
1226     }
1227     else // single line
1228     {
1229         return 1;
1230     }
1231 }
1232
1233 void wxTextCtrl::SetInsertionPoint( long pos )
1234 {
1235     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1236
1237     if ( IsMultiLine() )
1238     {
1239         GtkTextIter iter;
1240         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1241         gtk_text_buffer_place_cursor( m_buffer, &iter );
1242         GtkTextMark* mark = gtk_text_buffer_get_insert(m_buffer);
1243         if (IsFrozen())
1244             // defer until Thaw, text view is not using m_buffer now
1245             m_showPositionOnThaw = mark;
1246         else
1247             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1248     }
1249     else // single line
1250     {
1251         wxTextEntry::SetInsertionPoint(pos);
1252     }
1253 }
1254
1255 void wxTextCtrl::SetEditable( bool editable )
1256 {
1257     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1258
1259     if ( IsMultiLine() )
1260     {
1261         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1262     }
1263     else // single line
1264     {
1265         wxTextEntry::SetEditable(editable);
1266     }
1267 }
1268
1269 bool wxTextCtrl::Enable( bool enable )
1270 {
1271     if (!wxWindowBase::Enable(enable))
1272     {
1273         // nothing to do
1274         return false;
1275     }
1276
1277     gtk_widget_set_sensitive( m_text, enable );
1278     SetCursor(enable ? wxCursor(wxCURSOR_IBEAM) : wxCursor());
1279
1280     return true;
1281 }
1282
1283 // wxGTK-specific: called recursively by Enable,
1284 // to give widgets an opportunity to correct their colours after they
1285 // have been changed by Enable
1286 void wxTextCtrl::OnEnabled(bool WXUNUSED(enable))
1287 {
1288     // If we have a custom background colour, we use this colour in both
1289     // disabled and enabled mode, or we end up with a different colour under the
1290     // text.
1291     wxColour oldColour = GetBackgroundColour();
1292     if (oldColour.IsOk())
1293     {
1294         // Need to set twice or it'll optimize the useful stuff out
1295         if (oldColour == * wxWHITE)
1296             SetBackgroundColour(*wxBLACK);
1297         else
1298             SetBackgroundColour(*wxWHITE);
1299         SetBackgroundColour(oldColour);
1300     }
1301 }
1302
1303 void wxTextCtrl::MarkDirty()
1304 {
1305     m_modified = true;
1306 }
1307
1308 void wxTextCtrl::DiscardEdits()
1309 {
1310     m_modified = false;
1311 }
1312
1313 // ----------------------------------------------------------------------------
1314 // event handling
1315 // ----------------------------------------------------------------------------
1316
1317 void wxTextCtrl::EnableTextChangedEvents(bool enable)
1318 {
1319     if ( enable )
1320     {
1321         g_signal_handlers_unblock_by_func(GetTextObject(),
1322             (gpointer)gtk_text_changed_callback, this);
1323     }
1324     else // disable events
1325     {
1326         g_signal_handlers_block_by_func(GetTextObject(),
1327             (gpointer)gtk_text_changed_callback, this);
1328     }
1329 }
1330
1331 bool wxTextCtrl::IgnoreTextUpdate()
1332 {
1333     if ( m_countUpdatesToIgnore > 0 )
1334     {
1335         m_countUpdatesToIgnore--;
1336
1337         return true;
1338     }
1339
1340     return false;
1341 }
1342
1343 bool wxTextCtrl::MarkDirtyOnChange()
1344 {
1345     if ( m_dontMarkDirty )
1346     {
1347         m_dontMarkDirty = false;
1348
1349         return false;
1350     }
1351
1352     return true;
1353 }
1354
1355 void wxTextCtrl::SetSelection( long from, long to )
1356 {
1357     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1358
1359     if ( IsMultiLine() )
1360     {
1361         if (from == -1 && to == -1)
1362         {
1363             from = 0;
1364             to = GetValue().length();
1365         }
1366
1367         GtkTextIter fromi, toi;
1368         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1369         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1370
1371         gtk_text_buffer_select_range( m_buffer, &fromi, &toi );
1372     }
1373     else // single line
1374     {
1375         wxTextEntry::SetSelection(from, to);
1376     }
1377 }
1378
1379 void wxTextCtrl::ShowPosition( long pos )
1380 {
1381     if (IsMultiLine())
1382     {
1383         GtkTextIter iter;
1384         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, int(pos));
1385         GtkTextMark* mark = gtk_text_buffer_get_mark(m_buffer, "ShowPosition");
1386         gtk_text_buffer_move_mark(m_buffer, mark, &iter);
1387         if (IsFrozen())
1388             // defer until Thaw, text view is not using m_buffer now
1389             m_showPositionOnThaw = mark;
1390         else
1391             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1392     }
1393 }
1394
1395 wxTextCtrlHitTestResult
1396 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1397 {
1398     if ( !IsMultiLine() )
1399     {
1400         // not supported
1401         return wxTE_HT_UNKNOWN;
1402     }
1403
1404     int x, y;
1405     gtk_text_view_window_to_buffer_coords
1406     (
1407         GTK_TEXT_VIEW(m_text),
1408         GTK_TEXT_WINDOW_TEXT,
1409         pt.x, pt.y,
1410         &x, &y
1411     );
1412
1413     GtkTextIter iter;
1414     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1415     if ( pos )
1416         *pos = gtk_text_iter_get_offset(&iter);
1417
1418     return wxTE_HT_ON_TEXT;
1419 }
1420
1421 long wxTextCtrl::GetInsertionPoint() const
1422 {
1423     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1424
1425     if ( IsMultiLine() )
1426     {
1427         // There is no direct accessor for the cursor, but
1428         // internally, the cursor is the "mark" called
1429         // "insert" in the text view's btree structure.
1430
1431         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1432         GtkTextIter cursor;
1433         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1434
1435         return gtk_text_iter_get_offset( &cursor );
1436     }
1437     else
1438     {
1439         return wxTextEntry::GetInsertionPoint();
1440     }
1441 }
1442
1443 wxTextPos wxTextCtrl::GetLastPosition() const
1444 {
1445     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1446
1447     int pos = 0;
1448
1449     if ( IsMultiLine() )
1450     {
1451         GtkTextIter end;
1452         gtk_text_buffer_get_end_iter( m_buffer, &end );
1453
1454         pos = gtk_text_iter_get_offset( &end );
1455     }
1456     else // single line
1457     {
1458         pos = wxTextEntry::GetLastPosition();
1459     }
1460
1461     return (long)pos;
1462 }
1463
1464 void wxTextCtrl::Remove( long from, long to )
1465 {
1466     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1467
1468     if ( IsMultiLine() )
1469     {
1470         GtkTextIter fromi, toi;
1471         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1472         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1473
1474         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1475     }
1476     else // single line
1477     {
1478         wxTextEntry::Remove(from, to);
1479     }
1480 }
1481
1482 void wxTextCtrl::Cut()
1483 {
1484     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1485
1486     if ( IsMultiLine() )
1487         g_signal_emit_by_name (m_text, "cut-clipboard");
1488     else
1489         wxTextEntry::Cut();
1490 }
1491
1492 void wxTextCtrl::Copy()
1493 {
1494     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1495
1496     if ( IsMultiLine() )
1497         g_signal_emit_by_name (m_text, "copy-clipboard");
1498     else
1499         wxTextEntry::Copy();
1500 }
1501
1502 void wxTextCtrl::Paste()
1503 {
1504     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1505
1506     if ( IsMultiLine() )
1507         g_signal_emit_by_name (m_text, "paste-clipboard");
1508     else
1509         wxTextEntry::Paste();
1510 }
1511
1512 // If the return values from and to are the same, there is no
1513 // selection.
1514 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1515 {
1516     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1517
1518     if ( !IsMultiLine() )
1519     {
1520         wxTextEntry::GetSelection(fromOut, toOut);
1521         return;
1522     }
1523
1524     gint from, to;
1525
1526     GtkTextIter ifrom, ito;
1527     if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1528     {
1529         from = gtk_text_iter_get_offset(&ifrom);
1530         to = gtk_text_iter_get_offset(&ito);
1531
1532         if ( from > to )
1533         {
1534             // exchange them to be compatible with wxMSW
1535             gint tmp = from;
1536             from = to;
1537             to = tmp;
1538         }
1539     }
1540     else // no selection
1541     {
1542         from =
1543         to = GetInsertionPoint();
1544     }
1545
1546     if ( fromOut )
1547         *fromOut = from;
1548     if ( toOut )
1549         *toOut = to;
1550 }
1551
1552
1553 bool wxTextCtrl::IsEditable() const
1554 {
1555     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1556
1557     if ( IsMultiLine() )
1558     {
1559         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1560     }
1561     else
1562     {
1563         return wxTextEntry::IsEditable();
1564     }
1565 }
1566
1567 bool wxTextCtrl::IsModified() const
1568 {
1569     return m_modified;
1570 }
1571
1572 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1573 {
1574     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1575
1576     if ( key_event.GetKeyCode() == WXK_RETURN )
1577     {
1578         if ( HasFlag(wxTE_PROCESS_ENTER) )
1579         {
1580             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1581             event.SetEventObject(this);
1582             event.SetString(GetValue());
1583             if ( HandleWindowEvent(event) )
1584                 return;
1585         }
1586     }
1587
1588     key_event.Skip();
1589 }
1590
1591 GtkWidget* wxTextCtrl::GetConnectWidget()
1592 {
1593     return GTK_WIDGET(m_text);
1594 }
1595
1596 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1597 {
1598     if ( IsMultiLine() )
1599     {
1600         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1601                                         GTK_TEXT_WINDOW_TEXT );
1602     }
1603     else
1604     {
1605         return gtk_entry_get_text_window(GTK_ENTRY(m_text));
1606     }
1607 }
1608
1609 // the font will change for subsequent text insertiongs
1610 bool wxTextCtrl::SetFont( const wxFont &font )
1611 {
1612     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1613
1614     if ( !wxTextCtrlBase::SetFont(font) )
1615     {
1616         // font didn't change, nothing to do
1617         return false;
1618     }
1619
1620     if ( IsMultiLine() )
1621     {
1622         SetUpdateFont(true);
1623
1624         m_defaultStyle.SetFont(font);
1625
1626         ChangeFontGlobally();
1627     }
1628
1629     return true;
1630 }
1631
1632 void wxTextCtrl::ChangeFontGlobally()
1633 {
1634     // this method is very inefficient and hence should be called as rarely as
1635     // possible!
1636     //
1637     // TODO: it can be implemented much more efficiently for GTK2
1638     wxASSERT_MSG( IsMultiLine(),
1639                   wxT("shouldn't be called for single line controls") );
1640
1641     wxString value = GetValue();
1642     if ( !value.empty() )
1643     {
1644         SetUpdateFont(false);
1645
1646         Clear();
1647         AppendText(value);
1648     }
1649 }
1650
1651 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1652 {
1653     if ( !wxControl::SetForegroundColour(colour) )
1654         return false;
1655
1656     // update default fg colour too
1657     m_defaultStyle.SetTextColour(colour);
1658
1659     return true;
1660 }
1661
1662 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1663 {
1664     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1665
1666     if ( !wxControl::SetBackgroundColour( colour ) )
1667         return false;
1668
1669     if (!m_backgroundColour.IsOk())
1670         return false;
1671
1672     // change active background color too
1673     m_defaultStyle.SetBackgroundColour( colour );
1674
1675     return true;
1676 }
1677
1678 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1679 {
1680     if ( IsMultiLine() )
1681     {
1682         if ( style.IsDefault() )
1683         {
1684             // nothing to do
1685             return true;
1686         }
1687
1688         gint l = gtk_text_buffer_get_char_count( m_buffer );
1689
1690         wxCHECK_MSG( start >= 0 && end <= l, false,
1691                      wxT("invalid range in wxTextCtrl::SetStyle") );
1692
1693         GtkTextIter starti, endi;
1694         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1695         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1696
1697         wxGtkTextApplyTagsFromAttr( m_widget, m_buffer, style, &starti, &endi );
1698
1699         return true;
1700     }
1701     //else: single line text controls don't support styles
1702
1703     return false;
1704 }
1705
1706 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
1707 {
1708     if ( !IsMultiLine() )
1709     {
1710         // no styles for GtkEntry
1711         return false;
1712     }
1713
1714     gint l = gtk_text_buffer_get_char_count( m_buffer );
1715
1716     wxCHECK_MSG( position >= 0 && position <= l, false,
1717                  wxT("invalid range in wxTextCtrl::GetStyle") );
1718
1719     GtkTextIter positioni;
1720     gtk_text_buffer_get_iter_at_offset(m_buffer, &positioni, position);
1721
1722     // Obtain a copy of the default attributes
1723     GtkTextAttributes * const
1724         pattr = gtk_text_view_get_default_attributes(GTK_TEXT_VIEW(m_text));
1725     wxON_BLOCK_EXIT1( g_free, pattr );
1726
1727     // And query GTK for the attributes at the given position using it as base
1728     if ( !gtk_text_iter_get_attributes(&positioni, pattr) )
1729     {
1730         style = m_defaultStyle;
1731     }
1732     else // have custom attributes
1733     {
1734         style.SetBackgroundColour(pattr->appearance.bg_color);
1735         style.SetTextColour(pattr->appearance.fg_color);
1736
1737         const wxGtkString
1738             pangoFontString(pango_font_description_to_string(pattr->font));
1739
1740         wxFont font;
1741         if ( font.SetNativeFontInfo(wxString(pangoFontString)) )
1742             style.SetFont(font);
1743
1744         // TODO: set alignment, tabs and indents
1745     }
1746
1747     return true;
1748 }
1749
1750 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1751 {
1752     gtk_widget_modify_style(m_text, style);
1753 }
1754
1755 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1756 {
1757     Cut();
1758 }
1759
1760 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1761 {
1762     Copy();
1763 }
1764
1765 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1766 {
1767     Paste();
1768 }
1769
1770 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1771 {
1772     Undo();
1773 }
1774
1775 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1776 {
1777     Redo();
1778 }
1779
1780 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1781 {
1782     event.Enable( CanCut() );
1783 }
1784
1785 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1786 {
1787     event.Enable( CanCopy() );
1788 }
1789
1790 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1791 {
1792     event.Enable( CanPaste() );
1793 }
1794
1795 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1796 {
1797     event.Enable( CanUndo() );
1798 }
1799
1800 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1801 {
1802     event.Enable( CanRedo() );
1803 }
1804
1805 wxSize wxTextCtrl::DoGetBestSize() const
1806 {
1807     // FIXME should be different for multi-line controls...
1808     wxSize ret( wxControl::DoGetBestSize() );
1809     wxSize best(80, ret.y);
1810     CacheBestSize(best);
1811     return best;
1812 }
1813
1814 // ----------------------------------------------------------------------------
1815 // freeze/thaw
1816 // ----------------------------------------------------------------------------
1817
1818 void wxTextCtrl::DoFreeze()
1819 {
1820     wxCHECK_RET(m_text != NULL, wxT("invalid text ctrl"));
1821
1822     wxWindow::DoFreeze();
1823
1824     if ( HasFlag(wxTE_MULTILINE) )
1825     {
1826         GTKFreezeWidget(m_text);
1827
1828         // removing buffer dramatically speeds up insertion:
1829         g_object_ref(m_buffer);
1830         GtkTextBuffer* buf_new = gtk_text_buffer_new(NULL);
1831         gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), buf_new);
1832         // gtk_text_view_set_buffer adds its own reference
1833         g_object_unref(buf_new);
1834         // These marks should be deleted when the buffer is changed,
1835         // but they are not (in GTK+ up to at least 3.0.1).
1836         // Otherwise these anonymous marks start to build up in the buffer,
1837         // and Freeze takes longer and longer each time it is called.
1838         if (m_anonymousMarkList)
1839         {
1840             for (GSList* item = m_anonymousMarkList; item; item = item->next)
1841             {
1842                 GtkTextMark* mark = static_cast<GtkTextMark*>(item->data);
1843                 if (GTK_IS_TEXT_MARK(mark) && !gtk_text_mark_get_deleted(mark))
1844                     gtk_text_buffer_delete_mark(m_buffer, mark);
1845             }
1846             g_slist_free(m_anonymousMarkList);
1847             m_anonymousMarkList = NULL;
1848         }
1849     }
1850 }
1851
1852 void wxTextCtrl::DoThaw()
1853 {
1854     if ( HasFlag(wxTE_MULTILINE) )
1855     {
1856         // reattach buffer:
1857         gulong sig_id = g_signal_connect(m_buffer, "mark_set", G_CALLBACK(mark_set), &m_anonymousMarkList);
1858         gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1859         g_object_unref(m_buffer);
1860         g_signal_handler_disconnect(m_buffer, sig_id);
1861
1862         if (m_showPositionOnThaw != NULL)
1863         {
1864             gtk_text_view_scroll_mark_onscreen(
1865                 GTK_TEXT_VIEW(m_text), m_showPositionOnThaw);
1866             m_showPositionOnThaw = NULL;
1867         }
1868
1869         // and thaw the window
1870         GTKThawWidget(m_text);
1871     }
1872
1873     wxWindow::DoThaw();
1874 }
1875
1876 // ----------------------------------------------------------------------------
1877 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1878 // ----------------------------------------------------------------------------
1879
1880 // FIXME: when dragging on a link the sample gets an "Unknown event".
1881 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1882 // a buggy sample, or something else
1883 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1884 {
1885     event.Skip();
1886     if( !HasFlag(wxTE_AUTO_URL) )
1887         return;
1888
1889     gint x, y;
1890     GtkTextIter start, end;
1891     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1892                                                 "wxUrl");
1893
1894     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1895                                           event.GetX(), event.GetY(), &x, &y);
1896
1897     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1898     if (!gtk_text_iter_has_tag(&end, tag))
1899     {
1900         SetCursor(wxCursor(wxCURSOR_IBEAM));
1901         return;
1902     }
1903
1904     SetCursor(wxCursor(wxCURSOR_HAND));
1905
1906     start = end;
1907     if(!gtk_text_iter_begins_tag(&start, tag))
1908         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1909     if(!gtk_text_iter_ends_tag(&end, tag))
1910         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1911
1912     // Native context menu is probably not desired on an URL.
1913     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1914     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1915         event.Skip(false);
1916
1917     wxTextUrlEvent url_event(m_windowId, event,
1918                              gtk_text_iter_get_offset(&start),
1919                              gtk_text_iter_get_offset(&end));
1920
1921     InitCommandEvent(url_event);
1922     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1923     //event.Skip(!HandleWindowEvent(url_event));
1924     HandleWindowEvent(url_event);
1925 }
1926
1927 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
1928 {
1929     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
1930
1931     // GtkTextView starts a drag operation when left mouse button is pressed
1932     // and ends it when it is released and if it doesn't get the release event
1933     // the next click on a control results in an assertion failure inside
1934     // gtk_text_view_start_selection_drag() which simply *kills* the program
1935     // without anything we can do about it, so always let GTK+ have this event
1936     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
1937 }
1938
1939 // static
1940 wxVisualAttributes
1941 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1942 {
1943     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1944 }
1945
1946 #endif // wxUSE_TEXTCTRL