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 //  wxTextCtrl
 584 //-----------------------------------------------------------------------------
 585
 586 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 587
 588 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 589     EVT_CHAR(wxTextCtrl::OnChar)
 590
 591     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 592     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 593     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 594     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 595     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 596
 597     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 598     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 599     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 600     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 601     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 602
 603     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 604     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 605     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 606     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 607     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 608     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 609     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 610     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 611     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 612 END_EVENT_TABLE()
 613
 614 void wxTextCtrl::Init()
 615 {
 616     m_dontMarkDirty =
 617     m_modified = false;
 618
 619     m_countUpdatesToIgnore = 0;
 620
 621     SetUpdateFont(false);
 622
 623     m_text = NULL;
 624     m_showPositionOnThaw = NULL;
 625     m_gdkHandCursor = NULL;
 626     m_gdkXTermCursor = NULL;
 627 }
 628
 629 wxTextCtrl::~wxTextCtrl()
 630 {
 631     if(m_gdkHandCursor)
 632         gdk_cursor_unref(m_gdkHandCursor);
 633     if(m_gdkXTermCursor)
 634         gdk_cursor_unref(m_gdkXTermCursor);
 635 }
 636
 637 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 638                         wxWindowID id,
 639                         const wxString &value,
 640                         const wxPoint &pos,
 641                         const wxSize &size,
 642                         long style,
 643                         const wxValidator& validator,
 644                         const wxString &name )
 645 {
 646     Init();
 647
 648     Create( parent, id, value, pos, size, style, validator, name );
 649 }
 650
 651 bool wxTextCtrl::Create( wxWindow *parent,
 652                          wxWindowID id,
 653                          const wxString &value,
 654                          const wxPoint &pos,
 655                          const wxSize &size,
 656                          long style,
 657                          const wxValidator& validator,
 658                          const wxString &name )
 659 {
 660     if (!PreCreation( parent, pos, size ) ||
 661         !CreateBase( parent, id, pos, size, style, validator, name ))
 662     {
 663         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 664         return false;
 665     }
 666
 667     bool multi_line = (style & wxTE_MULTILINE) != 0;
 668
 669     if (multi_line)
 670     {
 671         // Create view
 672         m_text = gtk_text_view_new();
 673
 674         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 675
 676         // create "ShowPosition" marker
 677         GtkTextIter iter;
 678         gtk_text_buffer_get_start_iter(m_buffer, &iter);
 679         gtk_text_buffer_create_mark(m_buffer, "ShowPosition", &iter, true);
 680
 681         // create scrolled window
 682         m_widget = gtk_scrolled_window_new( NULL, NULL );
 683         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 684                                         GTK_POLICY_AUTOMATIC,
 685                                         style & wxTE_NO_VSCROLL
 686                                             ? GTK_POLICY_NEVER
 687                                             : GTK_POLICY_AUTOMATIC );
 688         // for ScrollLines/Pages
 689         m_scrollBar[1] = (GtkRange*)((GtkScrolledWindow*)m_widget)->vscrollbar;
 690
 691         // Insert view into scrolled window
 692         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 693
 694         GTKSetWrapMode();
 695
 696         GTKScrolledWindowSetBorder(m_widget, style);
 697
 698         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 699
 700         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 701     }
 702     else
 703     {
 704         // a single-line text control: no need for scrollbars
 705         m_widget =
 706         m_text = gtk_entry_new();
 707         // work around probable bug in GTK+ 2.18 when calling WriteText on a
 708         // new, empty control, see http://trac.wxwidgets.org/ticket/11409
 709         gtk_entry_get_text((GtkEntry*)m_text);
 710
 711         if (style & wxNO_BORDER)
 712             g_object_set (m_text, "has-frame", FALSE, NULL);
 713
 714     }
 715     g_object_ref(m_widget);
 716
 717     m_parent->DoAddChild( this );
 718
 719     m_focusWidget = m_text;
 720
 721     PostCreation(size);
 722
 723     if (multi_line)
 724     {
 725         gtk_widget_show(m_text);
 726     }
 727
 728     // We want to be notified about text changes.
 729     if (multi_line)
 730     {
 731         g_signal_connect (m_buffer, "changed",
 732                           G_CALLBACK (gtk_text_changed_callback), this);
 733     }
 734     else
 735     {
 736         g_signal_connect (m_text, "changed",
 737                           G_CALLBACK (gtk_text_changed_callback), this);
 738     }
 739
 740     // Catch to disable focus out handling
 741     g_signal_connect (m_text, "populate_popup",
 742                       G_CALLBACK (gtk_textctrl_populate_popup),
 743                       this);
 744
 745     if (!value.empty())
 746     {
 747         SetValue( value );
 748     }
 749
 750     if (style & wxTE_PASSWORD)
 751         GTKSetVisibility();
 752
 753     if (style & wxTE_READONLY)
 754         GTKSetEditable();
 755
 756     // left justification (alignment) is the default anyhow
 757     if ( style & (wxTE_RIGHT | wxTE_CENTRE) )
 758         GTKSetJustification();
 759
 760     if (multi_line)
 761     {
 762         // Handle URLs on multi-line controls with wxTE_AUTO_URL style
 763         if (style & wxTE_AUTO_URL)
 764         {
 765             GtkTextIter start, end;
 766             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 767             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 768
 769             // We create our wxUrl tag here for slight efficiency gain - we
 770             // don't have to check for the tag existance in callbacks,
 771             // hereby it's guaranteed to exist.
 772             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 773                                        "foreground", "blue",
 774                                        "underline", PANGO_UNDERLINE_SINGLE,
 775                                        NULL);
 776
 777             // Check for URLs after each text change
 778             g_signal_connect_after (m_buffer, "insert_text",
 779                                     G_CALLBACK (au_insert_text_callback), this);
 780             g_signal_connect_after (m_buffer, "delete_range",
 781                                     G_CALLBACK (au_delete_range_callback), this);
 782
 783             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 784             // block this callback temporarily. This takes care of gtk+ internal
 785             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 786             // which is undesired because only a part of the URL might be copied.
 787             // The insert-text signal emitted inside it will take care of newly formed
 788             // or wholly copied URLs.
 789             g_signal_connect (m_buffer, "apply_tag",
 790                               G_CALLBACK (au_apply_tag_callback), NULL);
 791
 792             // Check for URLs in the initial string passed to Create
 793             gtk_text_buffer_get_start_iter(m_buffer, &start);
 794             gtk_text_buffer_get_end_iter(m_buffer, &end);
 795             au_check_range(&start, &end);
 796         }
 797     }
 798     else // single line
 799     {
 800         // do the right thing with Enter presses depending on whether we have
 801         // wxTE_PROCESS_ENTER or not
 802         GTKSetActivatesDefault();
 803     }
 804
 805
 806     g_signal_connect (m_text, "copy-clipboard",
 807                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 808     g_signal_connect (m_text, "cut-clipboard",
 809                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 810     g_signal_connect (m_text, "paste-clipboard",
 811                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 812
 813     m_cursor = wxCursor( wxCURSOR_IBEAM );
 814
 815     return true;
 816 }
 817
 818 GtkEditable *wxTextCtrl::GetEditable() const
 819 {
 820     wxCHECK_MSG( IsSingleLine(), NULL, "shouldn't be called for multiline" );
 821
 822     return GTK_EDITABLE(m_text);
 823 }
 824
 825 GtkEntry *wxTextCtrl::GetEntry() const
 826 {
 827     return GTK_ENTRY(m_text);
 828 }
 829
 830 // ----------------------------------------------------------------------------
 831 // flags handling
 832 // ----------------------------------------------------------------------------
 833
 834 void wxTextCtrl::GTKSetEditable()
 835 {
 836     gboolean editable = !HasFlag(wxTE_READONLY);
 837     if ( IsSingleLine() )
 838         gtk_editable_set_editable(GTK_EDITABLE(m_text), editable);
 839     else
 840         gtk_text_view_set_editable(GTK_TEXT_VIEW(m_text), editable);
 841 }
 842
 843 void wxTextCtrl::GTKSetVisibility()
 844 {
 845     wxCHECK_RET( IsSingleLine(),
 846                  "wxTE_PASSWORD is for single line text controls only" );
 847
 848     gtk_entry_set_visibility(GTK_ENTRY(m_text), !HasFlag(wxTE_PASSWORD));
 849 }
 850
 851 void wxTextCtrl::GTKSetActivatesDefault()
 852 {
 853     wxCHECK_RET( IsSingleLine(),
 854                  "wxTE_PROCESS_ENTER is for single line text controls only" );
 855
 856     gtk_entry_set_activates_default(GTK_ENTRY(m_text),
 857                                     !HasFlag(wxTE_PROCESS_ENTER));
 858 }
 859
 860 void wxTextCtrl::GTKSetWrapMode()
 861 {
 862     // no wrapping in single line controls
 863     if ( !IsMultiLine() )
 864         return;
 865
 866     // translate wx wrapping style to GTK+
 867     GtkWrapMode wrap;
 868     if ( HasFlag( wxTE_DONTWRAP ) )
 869         wrap = GTK_WRAP_NONE;
 870     else if ( HasFlag( wxTE_CHARWRAP ) )
 871         wrap = GTK_WRAP_CHAR;
 872     else if ( HasFlag( wxTE_WORDWRAP ) )
 873         wrap = GTK_WRAP_WORD;
 874     else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 875         wrap = GTK_WRAP_WORD_CHAR;
 876
 877     gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 878 }
 879
 880 void wxTextCtrl::GTKSetJustification()
 881 {
 882     if ( IsMultiLine() )
 883     {
 884         GtkJustification just;
 885         if ( HasFlag(wxTE_RIGHT) )
 886             just = GTK_JUSTIFY_RIGHT;
 887         else if ( HasFlag(wxTE_CENTRE) )
 888             just = GTK_JUSTIFY_CENTER;
 889         else // wxTE_LEFT == 0
 890             just = GTK_JUSTIFY_LEFT;
 891
 892         gtk_text_view_set_justification(GTK_TEXT_VIEW(m_text), just);
 893     }
 894     else // single line
 895     {
 896         gfloat align;
 897         if ( HasFlag(wxTE_RIGHT) )
 898             align = 1.0;
 899         else if ( HasFlag(wxTE_CENTRE) )
 900             align = 0.5;
 901         else // single line
 902             align = 0.0;
 903
 904         gtk_entry_set_alignment(GTK_ENTRY(m_text), align);
 905     }
 906 }
 907
 908 void wxTextCtrl::SetWindowStyleFlag(long style)
 909 {
 910     long styleOld = GetWindowStyleFlag();
 911
 912     wxTextCtrlBase::SetWindowStyleFlag(style);
 913
 914     if ( (style & wxTE_READONLY) != (styleOld & wxTE_READONLY) )
 915         GTKSetEditable();
 916
 917     if ( (style & wxTE_PASSWORD) != (styleOld & wxTE_PASSWORD) )
 918         GTKSetVisibility();
 919
 920     if ( (style & wxTE_PROCESS_ENTER) != (styleOld & wxTE_PROCESS_ENTER) )
 921         GTKSetActivatesDefault();
 922
 923     static const long flagsWrap = wxTE_WORDWRAP | wxTE_CHARWRAP | wxTE_DONTWRAP;
 924     if ( (style & flagsWrap) != (styleOld & flagsWrap) )
 925         GTKSetWrapMode();
 926
 927     static const long flagsAlign = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 928     if ( (style & flagsAlign) != (styleOld & flagsAlign) )
 929         GTKSetJustification();
 930 }
 931
 932 // ----------------------------------------------------------------------------
 933 // control value
 934 // ----------------------------------------------------------------------------
 935
 936 wxString wxTextCtrl::GetValue() const
 937 {
 938     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 939
 940     if ( IsMultiLine() )
 941     {
 942         GtkTextIter start;
 943         gtk_text_buffer_get_start_iter( m_buffer, &start );
 944         GtkTextIter end;
 945         gtk_text_buffer_get_end_iter( m_buffer, &end );
 946         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 947
 948         return wxGTK_CONV_BACK(text);
 949     }
 950     else // single line
 951     {
 952         return wxTextEntry::GetValue();
 953     }
 954 }
 955
 956 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 957 {
 958     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 959     // encoding?
 960
 961     // first check the default text style (we intentionally don't check the
 962     // style for the current position as it doesn't make sense for SetValue())
 963     const wxTextAttr& style = GetDefaultStyle();
 964     wxFontEncoding enc = style.HasFontEncoding() ? style.GetFontEncoding()
 965                                          : wxFONTENCODING_SYSTEM;
 966
 967     // fall back to the controls font if no style
 968     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 969         enc = GetFont().GetEncoding();
 970
 971     return enc;
 972 }
 973
 974 bool wxTextCtrl::IsEmpty() const
 975 {
 976     if ( IsMultiLine() )
 977         return gtk_text_buffer_get_char_count(m_buffer) == 0;
 978
 979     return wxTextEntry::IsEmpty();
 980 }
 981
 982 void wxTextCtrl::DoSetValue( const wxString &value, int flags )
 983 {
 984     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 985
 986     m_modified = false;
 987
 988     if ( !IsMultiLine() )
 989     {
 990         wxTextEntry::DoSetValue(value, flags);
 991         return;
 992     }
 993
 994     if (value.IsEmpty())
 995     {
 996         if ( !(flags & SetValue_SendEvent) )
 997             EnableTextChangedEvents(false);
 998
 999         gtk_text_buffer_set_text( m_buffer, "", 0 );
1000
1001         if ( !(flags & SetValue_SendEvent) )
1002             EnableTextChangedEvents(true);
1003
1004         return;
1005     }
1006
1007 #if wxUSE_UNICODE
1008     const wxCharBuffer buffer(value.utf8_str());
1009 #else
1010     wxFontEncoding enc = m_defaultStyle.HasFont()
1011                             ? m_defaultStyle.GetFont().GetEncoding()
1012                             : wxFONTENCODING_SYSTEM;
1013     if ( enc == wxFONTENCODING_SYSTEM )
1014         enc = GetTextEncoding();
1015
1016     const wxCharBuffer buffer(wxGTK_CONV_ENC(value, enc));
1017     if ( !buffer )
1018     {
1019         // see comment in WriteText() as to why we must warn the user about
1020         // this
1021         wxLogWarning(_("Failed to set text in the text control."));
1022         return;
1023     }
1024 #endif
1025
1026     if ( !(flags & SetValue_SendEvent) )
1027     {
1028         EnableTextChangedEvents(false);
1029     }
1030
1031     gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
1032
1033     if ( !m_defaultStyle.IsDefault() )
1034     {
1035         GtkTextIter start, end;
1036         gtk_text_buffer_get_bounds( m_buffer, &start, &end );
1037         wxGtkTextApplyTagsFromAttr(m_widget, m_buffer, m_defaultStyle,
1038                                    &start, &end);
1039     }
1040
1041     if ( !(flags & SetValue_SendEvent) )
1042     {
1043         EnableTextChangedEvents(true);
1044     }
1045 }
1046
1047 void wxTextCtrl::WriteText( const wxString &text )
1048 {
1049     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1050
1051     // we're changing the text programmatically
1052     DontMarkDirtyOnNextChange();
1053
1054     if ( !IsMultiLine() )
1055     {
1056         wxTextEntry::WriteText(text);
1057         return;
1058     }
1059
1060 #if wxUSE_UNICODE
1061     const wxCharBuffer buffer(text.utf8_str());
1062 #else
1063     // check if we have a specific style for the current position
1064     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
1065     wxTextAttr style;
1066     if ( GetStyle(GetInsertionPoint(), style) && style.HasFontEncoding() )
1067     {
1068         enc = style.GetFontEncoding();
1069     }
1070
1071     if ( enc == wxFONTENCODING_SYSTEM )
1072         enc = GetTextEncoding();
1073
1074     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
1075     if ( !buffer )
1076     {
1077         // we must log an error here as losing the text like this can be a
1078         // serious problem (e.g. imagine the document edited by user being
1079         // empty instead of containing the correct text)
1080         wxLogWarning(_("Failed to insert text in the control."));
1081         return;
1082     }
1083 #endif
1084
1085     // First remove the selection if there is one
1086     // TODO:  Is there an easier GTK specific way to do this?
1087     long from, to;
1088     GetSelection(&from, &to);
1089     if (from != to)
1090         Remove(from, to);
1091
1092     // Insert the text
1093     wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
1094
1095     GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
1096     // Scroll to cursor, but only if scrollbar thumb is at the very bottom
1097     // won't work when frozen, text view is not using m_buffer then
1098     if (!IsFrozen() && wxIsSameDouble(adj->value, adj->upper - adj->page_size))
1099     {
1100         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
1101                 gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
1102     }
1103 }
1104
1105 wxString wxTextCtrl::GetLineText( long lineNo ) const
1106 {
1107     wxString result;
1108     if ( IsMultiLine() )
1109     {
1110         GtkTextIter line;
1111         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
1112
1113         GtkTextIter end = line;
1114         // avoid skipping to the next line end if this one is empty
1115         if ( !gtk_text_iter_ends_line(&line) )
1116             gtk_text_iter_forward_to_line_end(&end);
1117
1118         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
1119         result = wxGTK_CONV_BACK(text);
1120     }
1121     else
1122     {
1123         if (lineNo == 0)
1124             result = GetValue();
1125     }
1126     return result;
1127 }
1128
1129 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
1130 {
1131   /* If you implement this, don't forget to update the documentation!
1132    * (file docs/latex/wx/text.tex) */
1133     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
1134 }
1135
1136 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
1137 {
1138     if ( IsMultiLine() )
1139     {
1140         GtkTextIter iter;
1141
1142         if (pos > GetLastPosition())
1143             return false;
1144
1145         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
1146
1147         if ( y )
1148             *y = gtk_text_iter_get_line(&iter);
1149         if ( x )
1150             *x = gtk_text_iter_get_line_offset(&iter);
1151     }
1152     else // single line control
1153     {
1154         if ( pos <= GTK_ENTRY(m_text)->text_length )
1155         {
1156             if ( y )
1157                 *y = 0;
1158             if ( x )
1159                 *x = pos;
1160         }
1161         else
1162         {
1163             // index out of bounds
1164             return false;
1165         }
1166     }
1167
1168     return true;
1169 }
1170
1171 long wxTextCtrl::XYToPosition(long x, long y ) const
1172 {
1173     if ( IsSingleLine() )
1174         return 0;
1175
1176     GtkTextIter iter;
1177     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1178         return -1;
1179
1180     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1181     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1182         return -1;
1183
1184     return gtk_text_iter_get_offset(&iter) + x;
1185 }
1186
1187 int wxTextCtrl::GetLineLength(long lineNo) const
1188 {
1189     if ( IsMultiLine() )
1190     {
1191         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1192         if (lineNo > last_line)
1193             return -1;
1194
1195         GtkTextIter iter;
1196         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1197         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1198         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1199     }
1200     else
1201     {
1202         wxString str = GetLineText (lineNo);
1203         return (int) str.length();
1204     }
1205 }
1206
1207 int wxTextCtrl::GetNumberOfLines() const
1208 {
1209     if ( IsMultiLine() )
1210     {
1211         return gtk_text_buffer_get_line_count( m_buffer );
1212     }
1213     else // single line
1214     {
1215         return 1;
1216     }
1217 }
1218
1219 void wxTextCtrl::SetInsertionPoint( long pos )
1220 {
1221     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1222
1223     if ( IsMultiLine() )
1224     {
1225         GtkTextIter iter;
1226         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1227         gtk_text_buffer_place_cursor( m_buffer, &iter );
1228         GtkTextMark* mark = gtk_text_buffer_get_insert(m_buffer);
1229         if (IsFrozen())
1230             // defer until Thaw, text view is not using m_buffer now
1231             m_showPositionOnThaw = mark;
1232         else
1233             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1234     }
1235     else // single line
1236     {
1237         wxTextEntry::SetInsertionPoint(pos);
1238     }
1239 }
1240
1241 void wxTextCtrl::SetEditable( bool editable )
1242 {
1243     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1244
1245     if ( IsMultiLine() )
1246     {
1247         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1248     }
1249     else // single line
1250     {
1251         wxTextEntry::SetEditable(editable);
1252     }
1253 }
1254
1255 bool wxTextCtrl::Enable( bool enable )
1256 {
1257     if (!wxWindowBase::Enable(enable))
1258     {
1259         // nothing to do
1260         return false;
1261     }
1262
1263     gtk_widget_set_sensitive( m_text, enable );
1264     SetCursor(enable ? wxCursor(wxCURSOR_IBEAM) : wxCursor());
1265
1266     return true;
1267 }
1268
1269 // wxGTK-specific: called recursively by Enable,
1270 // to give widgets an opportunity to correct their colours after they
1271 // have been changed by Enable
1272 void wxTextCtrl::OnEnabled(bool WXUNUSED(enable))
1273 {
1274     // If we have a custom background colour, we use this colour in both
1275     // disabled and enabled mode, or we end up with a different colour under the
1276     // text.
1277     wxColour oldColour = GetBackgroundColour();
1278     if (oldColour.Ok())
1279     {
1280         // Need to set twice or it'll optimize the useful stuff out
1281         if (oldColour == * wxWHITE)
1282             SetBackgroundColour(*wxBLACK);
1283         else
1284             SetBackgroundColour(*wxWHITE);
1285         SetBackgroundColour(oldColour);
1286     }
1287 }
1288
1289 void wxTextCtrl::MarkDirty()
1290 {
1291     m_modified = true;
1292 }
1293
1294 void wxTextCtrl::DiscardEdits()
1295 {
1296     m_modified = false;
1297 }
1298
1299 // ----------------------------------------------------------------------------
1300 // event handling
1301 // ----------------------------------------------------------------------------
1302
1303 void wxTextCtrl::EnableTextChangedEvents(bool enable)
1304 {
1305     if ( enable )
1306     {
1307         g_signal_handlers_unblock_by_func(GetTextObject(),
1308             (gpointer)gtk_text_changed_callback, this);
1309     }
1310     else // disable events
1311     {
1312         g_signal_handlers_block_by_func(GetTextObject(),
1313             (gpointer)gtk_text_changed_callback, this);
1314     }
1315 }
1316
1317 bool wxTextCtrl::IgnoreTextUpdate()
1318 {
1319     if ( m_countUpdatesToIgnore > 0 )
1320     {
1321         m_countUpdatesToIgnore--;
1322
1323         return true;
1324     }
1325
1326     return false;
1327 }
1328
1329 bool wxTextCtrl::MarkDirtyOnChange()
1330 {
1331     if ( m_dontMarkDirty )
1332     {
1333         m_dontMarkDirty = false;
1334
1335         return false;
1336     }
1337
1338     return true;
1339 }
1340
1341 void wxTextCtrl::SetSelection( long from, long to )
1342 {
1343     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1344
1345     if (from == -1 && to == -1)
1346     {
1347         from = 0;
1348         to = GetValue().length();
1349     }
1350
1351     if ( IsMultiLine() )
1352     {
1353         GtkTextIter fromi, toi;
1354         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1355         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1356
1357         gtk_text_buffer_select_range( m_buffer, &fromi, &toi );
1358     }
1359     else // single line
1360     {
1361         wxTextEntry::SetSelection(from, to);
1362     }
1363 }
1364
1365 void wxTextCtrl::ShowPosition( long pos )
1366 {
1367     if (IsMultiLine())
1368     {
1369         GtkTextIter iter;
1370         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, int(pos));
1371         GtkTextMark* mark = gtk_text_buffer_get_mark(m_buffer, "ShowPosition");
1372         gtk_text_buffer_move_mark(m_buffer, mark, &iter);
1373         if (IsFrozen())
1374             // defer until Thaw, text view is not using m_buffer now
1375             m_showPositionOnThaw = mark;
1376         else
1377             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1378     }
1379 }
1380
1381 wxTextCtrlHitTestResult
1382 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1383 {
1384     if ( !IsMultiLine() )
1385     {
1386         // not supported
1387         return wxTE_HT_UNKNOWN;
1388     }
1389
1390     int x, y;
1391     gtk_text_view_window_to_buffer_coords
1392     (
1393         GTK_TEXT_VIEW(m_text),
1394         GTK_TEXT_WINDOW_TEXT,
1395         pt.x, pt.y,
1396         &x, &y
1397     );
1398
1399     GtkTextIter iter;
1400     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1401     if ( pos )
1402         *pos = gtk_text_iter_get_offset(&iter);
1403
1404     return wxTE_HT_ON_TEXT;
1405 }
1406
1407 long wxTextCtrl::GetInsertionPoint() const
1408 {
1409     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1410
1411     if ( IsMultiLine() )
1412     {
1413         // There is no direct accessor for the cursor, but
1414         // internally, the cursor is the "mark" called
1415         // "insert" in the text view's btree structure.
1416
1417         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1418         GtkTextIter cursor;
1419         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1420
1421         return gtk_text_iter_get_offset( &cursor );
1422     }
1423     else
1424     {
1425         return wxTextEntry::GetInsertionPoint();
1426     }
1427 }
1428
1429 wxTextPos wxTextCtrl::GetLastPosition() const
1430 {
1431     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1432
1433     int pos = 0;
1434
1435     if ( IsMultiLine() )
1436     {
1437         GtkTextIter end;
1438         gtk_text_buffer_get_end_iter( m_buffer, &end );
1439
1440         pos = gtk_text_iter_get_offset( &end );
1441     }
1442     else // single line
1443     {
1444         pos = wxTextEntry::GetLastPosition();
1445     }
1446
1447     return (long)pos;
1448 }
1449
1450 void wxTextCtrl::Remove( long from, long to )
1451 {
1452     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1453
1454     if ( IsMultiLine() )
1455     {
1456         GtkTextIter fromi, toi;
1457         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1458         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1459
1460         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1461     }
1462     else // single line
1463     {
1464         wxTextEntry::Remove(from, to);
1465     }
1466 }
1467
1468 void wxTextCtrl::Cut()
1469 {
1470     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1471
1472     if ( IsMultiLine() )
1473         g_signal_emit_by_name (m_text, "cut-clipboard");
1474     else
1475         wxTextEntry::Cut();
1476 }
1477
1478 void wxTextCtrl::Copy()
1479 {
1480     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1481
1482     if ( IsMultiLine() )
1483         g_signal_emit_by_name (m_text, "copy-clipboard");
1484     else
1485         wxTextEntry::Copy();
1486 }
1487
1488 void wxTextCtrl::Paste()
1489 {
1490     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1491
1492     if ( IsMultiLine() )
1493         g_signal_emit_by_name (m_text, "paste-clipboard");
1494     else
1495         wxTextEntry::Paste();
1496 }
1497
1498 // If the return values from and to are the same, there is no
1499 // selection.
1500 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1501 {
1502     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1503
1504     if ( !IsMultiLine() )
1505     {
1506         wxTextEntry::GetSelection(fromOut, toOut);
1507         return;
1508     }
1509
1510     gint from, to;
1511
1512     GtkTextIter ifrom, ito;
1513     if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1514     {
1515         from = gtk_text_iter_get_offset(&ifrom);
1516         to = gtk_text_iter_get_offset(&ito);
1517
1518         if ( from > to )
1519         {
1520             // exchange them to be compatible with wxMSW
1521             gint tmp = from;
1522             from = to;
1523             to = tmp;
1524         }
1525     }
1526     else // no selection
1527     {
1528         from =
1529         to = GetInsertionPoint();
1530     }
1531
1532     if ( fromOut )
1533         *fromOut = from;
1534     if ( toOut )
1535         *toOut = to;
1536 }
1537
1538
1539 bool wxTextCtrl::IsEditable() const
1540 {
1541     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1542
1543     if ( IsMultiLine() )
1544     {
1545         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1546     }
1547     else
1548     {
1549         return wxTextEntry::IsEditable();
1550     }
1551 }
1552
1553 bool wxTextCtrl::IsModified() const
1554 {
1555     return m_modified;
1556 }
1557
1558 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1559 {
1560     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1561
1562     if ( key_event.GetKeyCode() == WXK_RETURN )
1563     {
1564         if ( HasFlag(wxTE_PROCESS_ENTER) )
1565         {
1566             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1567             event.SetEventObject(this);
1568             event.SetString(GetValue());
1569             if ( HandleWindowEvent(event) )
1570                 return;
1571         }
1572     }
1573
1574     key_event.Skip();
1575 }
1576
1577 GtkWidget* wxTextCtrl::GetConnectWidget()
1578 {
1579     return GTK_WIDGET(m_text);
1580 }
1581
1582 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1583 {
1584     if ( IsMultiLine() )
1585     {
1586         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1587                                         GTK_TEXT_WINDOW_TEXT );
1588     }
1589     else
1590     {
1591         return GTK_ENTRY(m_text)->text_area;
1592     }
1593 }
1594
1595 // the font will change for subsequent text insertiongs
1596 bool wxTextCtrl::SetFont( const wxFont &font )
1597 {
1598     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1599
1600     if ( !wxTextCtrlBase::SetFont(font) )
1601     {
1602         // font didn't change, nothing to do
1603         return false;
1604     }
1605
1606     if ( IsMultiLine() )
1607     {
1608         SetUpdateFont(true);
1609
1610         m_defaultStyle.SetFont(font);
1611
1612         ChangeFontGlobally();
1613     }
1614
1615     return true;
1616 }
1617
1618 void wxTextCtrl::ChangeFontGlobally()
1619 {
1620     // this method is very inefficient and hence should be called as rarely as
1621     // possible!
1622     //
1623     // TODO: it can be implemented much more efficiently for GTK2
1624     wxASSERT_MSG( IsMultiLine(),
1625                   wxT("shouldn't be called for single line controls") );
1626
1627     wxString value = GetValue();
1628     if ( !value.empty() )
1629     {
1630         SetUpdateFont(false);
1631
1632         Clear();
1633         AppendText(value);
1634     }
1635 }
1636
1637 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1638 {
1639     if ( !wxControl::SetForegroundColour(colour) )
1640         return false;
1641
1642     // update default fg colour too
1643     m_defaultStyle.SetTextColour(colour);
1644
1645     return true;
1646 }
1647
1648 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1649 {
1650     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1651
1652     if ( !wxControl::SetBackgroundColour( colour ) )
1653         return false;
1654
1655     if (!m_backgroundColour.Ok())
1656         return false;
1657
1658     // change active background color too
1659     m_defaultStyle.SetBackgroundColour( colour );
1660
1661     return true;
1662 }
1663
1664 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1665 {
1666     if ( IsMultiLine() )
1667     {
1668         if ( style.IsDefault() )
1669         {
1670             // nothing to do
1671             return true;
1672         }
1673
1674         gint l = gtk_text_buffer_get_char_count( m_buffer );
1675
1676         wxCHECK_MSG( start >= 0 && end <= l, false,
1677                      wxT("invalid range in wxTextCtrl::SetStyle") );
1678
1679         GtkTextIter starti, endi;
1680         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1681         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1682
1683         wxGtkTextApplyTagsFromAttr( m_widget, m_buffer, style, &starti, &endi );
1684
1685         return true;
1686     }
1687     //else: single line text controls don't support styles
1688
1689     return false;
1690 }
1691
1692 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
1693 {
1694     if ( !IsMultiLine() )
1695     {
1696         // no styles for GtkEntry
1697         return false;
1698     }
1699
1700     gint l = gtk_text_buffer_get_char_count( m_buffer );
1701
1702     wxCHECK_MSG( position >= 0 && position <= l, false,
1703                  _T("invalid range in wxTextCtrl::GetStyle") );
1704
1705     GtkTextIter positioni;
1706     gtk_text_buffer_get_iter_at_offset(m_buffer, &positioni, position);
1707
1708     // Obtain a copy of the default attributes
1709     GtkTextAttributes * const
1710         pattr = gtk_text_view_get_default_attributes(GTK_TEXT_VIEW(m_text));
1711     wxON_BLOCK_EXIT1( g_free, pattr );
1712
1713     // And query GTK for the attributes at the given position using it as base
1714     if ( !gtk_text_iter_get_attributes(&positioni, pattr) )
1715     {
1716         style = m_defaultStyle;
1717     }
1718     else // have custom attributes
1719     {
1720         style.SetBackgroundColour(pattr->appearance.bg_color);
1721         style.SetTextColour(pattr->appearance.fg_color);
1722
1723         const wxGtkString
1724             pangoFontString(pango_font_description_to_string(pattr->font));
1725
1726         wxFont font;
1727         if ( font.SetNativeFontInfo(wxString(pangoFontString)) )
1728             style.SetFont(font);
1729
1730         // TODO: set alignment, tabs and indents
1731     }
1732
1733     return true;
1734 }
1735
1736 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1737 {
1738     gtk_widget_modify_style(m_text, style);
1739 }
1740
1741 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1742 {
1743     Cut();
1744 }
1745
1746 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1747 {
1748     Copy();
1749 }
1750
1751 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1752 {
1753     Paste();
1754 }
1755
1756 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1757 {
1758     Undo();
1759 }
1760
1761 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1762 {
1763     Redo();
1764 }
1765
1766 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1767 {
1768     event.Enable( CanCut() );
1769 }
1770
1771 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1772 {
1773     event.Enable( CanCopy() );
1774 }
1775
1776 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1777 {
1778     event.Enable( CanPaste() );
1779 }
1780
1781 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1782 {
1783     event.Enable( CanUndo() );
1784 }
1785
1786 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1787 {
1788     event.Enable( CanRedo() );
1789 }
1790
1791 wxSize wxTextCtrl::DoGetBestSize() const
1792 {
1793     // FIXME should be different for multi-line controls...
1794     wxSize ret( wxControl::DoGetBestSize() );
1795     wxSize best(80, ret.y);
1796     CacheBestSize(best);
1797     return best;
1798 }
1799
1800 // ----------------------------------------------------------------------------
1801 // freeze/thaw
1802 // ----------------------------------------------------------------------------
1803
1804 void wxTextCtrl::DoFreeze()
1805 {
1806     wxCHECK_RET(m_text != NULL, wxT("invalid text ctrl"));
1807
1808     wxWindow::DoFreeze();
1809
1810     if ( HasFlag(wxTE_MULTILINE) )
1811     {
1812         GTKFreezeWidget(m_text);
1813
1814         // removing buffer dramatically speeds up insertion:
1815         g_object_ref(m_buffer);
1816         GtkTextBuffer* buf_new = gtk_text_buffer_new(NULL);
1817         GtkTextMark* mark = GTK_TEXT_VIEW(m_text)->first_para_mark;
1818         gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), buf_new);
1819         // gtk_text_view_set_buffer adds its own reference
1820         g_object_unref(buf_new);
1821         // This mark should be deleted when the buffer is changed,
1822         // but it's not (in GTK+ up to at least 2.10.6).
1823         // Otherwise these anonymous marks start to build up in the buffer,
1824         // and Freeze takes longer and longer each time it is called.
1825         if (GTK_IS_TEXT_MARK(mark) && !gtk_text_mark_get_deleted(mark))
1826             gtk_text_buffer_delete_mark(m_buffer, mark);
1827     }
1828 }
1829
1830 void wxTextCtrl::DoThaw()
1831 {
1832     if ( HasFlag(wxTE_MULTILINE) )
1833     {
1834         // reattach buffer:
1835         gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1836         g_object_unref(m_buffer);
1837
1838         if (m_showPositionOnThaw != NULL)
1839         {
1840             gtk_text_view_scroll_mark_onscreen(
1841                 GTK_TEXT_VIEW(m_text), m_showPositionOnThaw);
1842             m_showPositionOnThaw = NULL;
1843         }
1844
1845         // and thaw the window
1846         GTKThawWidget(m_text);
1847     }
1848
1849     wxWindow::DoThaw();
1850 }
1851
1852 // ----------------------------------------------------------------------------
1853 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1854 // ----------------------------------------------------------------------------
1855
1856 // FIXME: when dragging on a link the sample gets an "Unknown event".
1857 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1858 // a buggy sample, or something else
1859 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1860 {
1861     event.Skip();
1862     if( !HasFlag(wxTE_AUTO_URL) )
1863         return;
1864
1865     gint x, y;
1866     GtkTextIter start, end;
1867     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1868                                                 "wxUrl");
1869
1870     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1871                                           event.GetX(), event.GetY(), &x, &y);
1872
1873     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1874     if (!gtk_text_iter_has_tag(&end, tag))
1875     {
1876         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1877                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1878         return;
1879     }
1880
1881     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1882                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1883
1884     start = end;
1885     if(!gtk_text_iter_begins_tag(&start, tag))
1886         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1887     if(!gtk_text_iter_ends_tag(&end, tag))
1888         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1889
1890     // Native context menu is probably not desired on an URL.
1891     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1892     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1893         event.Skip(false);
1894
1895     wxTextUrlEvent url_event(m_windowId, event,
1896                              gtk_text_iter_get_offset(&start),
1897                              gtk_text_iter_get_offset(&end));
1898
1899     InitCommandEvent(url_event);
1900     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1901     //event.Skip(!HandleWindowEvent(url_event));
1902     HandleWindowEvent(url_event);
1903 }
1904
1905 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
1906 {
1907     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
1908
1909     // GtkTextView starts a drag operation when left mouse button is pressed
1910     // and ends it when it is released and if it doesn't get the release event
1911     // the next click on a control results in an assertion failure inside
1912     // gtk_text_view_start_selection_drag() which simply *kills* the program
1913     // without anything we can do about it, so always let GTK+ have this event
1914     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
1915 }
1916
1917 // static
1918 wxVisualAttributes
1919 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1920 {
1921     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1922 }
1923
1924 #endif // wxUSE_TEXTCTRL