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/app.h"
  19     #include "wx/intl.h"
  20     #include "wx/log.h"
  21     #include "wx/utils.h"
  22     #include "wx/settings.h"
  23     #include "wx/math.h"
  24 #endif
  25
  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 = _T("WXTABS");
 248         g_snprintf(buf, sizeof(buf), "WXTABS");
 249         for (size_t i = 0; i < tabs.GetCount(); i++)
 250             tagname += wxString::Format(_T(" %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 *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
 708         if (style & wxNO_BORDER)
 709             g_object_set (m_text, "has-frame", FALSE, NULL);
 710
 711     }
 712     g_object_ref(m_widget);
 713
 714     m_parent->DoAddChild( this );
 715
 716     m_focusWidget = m_text;
 717
 718     PostCreation(size);
 719
 720     if (multi_line)
 721     {
 722         gtk_widget_show(m_text);
 723     }
 724
 725     // We want to be notified about text changes.
 726     if (multi_line)
 727     {
 728         g_signal_connect (m_buffer, "changed",
 729                           G_CALLBACK (gtk_text_changed_callback), this);
 730     }
 731     else
 732     {
 733         g_signal_connect (m_text, "changed",
 734                           G_CALLBACK (gtk_text_changed_callback), this);
 735     }
 736
 737     // Catch to disable focus out handling
 738     g_signal_connect (m_text, "populate_popup",
 739                       G_CALLBACK (gtk_textctrl_populate_popup),
 740                       this);
 741
 742     if (!value.empty())
 743     {
 744         SetValue( value );
 745     }
 746
 747     if (style & wxTE_PASSWORD)
 748         GTKSetVisibility();
 749
 750     if (style & wxTE_READONLY)
 751         GTKSetEditable();
 752
 753     // left justification (alignment) is the default anyhow
 754     if ( style & (wxTE_RIGHT | wxTE_CENTRE) )
 755         GTKSetJustification();
 756
 757     if (multi_line)
 758     {
 759         // Handle URLs on multi-line controls with wxTE_AUTO_URL style
 760         if (style & wxTE_AUTO_URL)
 761         {
 762             GtkTextIter start, end;
 763             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 764             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 765
 766             // We create our wxUrl tag here for slight efficiency gain - we
 767             // don't have to check for the tag existance in callbacks,
 768             // hereby it's guaranteed to exist.
 769             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 770                                        "foreground", "blue",
 771                                        "underline", PANGO_UNDERLINE_SINGLE,
 772                                        NULL);
 773
 774             // Check for URLs after each text change
 775             g_signal_connect_after (m_buffer, "insert_text",
 776                                     G_CALLBACK (au_insert_text_callback), this);
 777             g_signal_connect_after (m_buffer, "delete_range",
 778                                     G_CALLBACK (au_delete_range_callback), this);
 779
 780             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 781             // block this callback temporarily. This takes care of gtk+ internal
 782             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 783             // which is undesired because only a part of the URL might be copied.
 784             // The insert-text signal emitted inside it will take care of newly formed
 785             // or wholly copied URLs.
 786             g_signal_connect (m_buffer, "apply_tag",
 787                               G_CALLBACK (au_apply_tag_callback), NULL);
 788
 789             // Check for URLs in the initial string passed to Create
 790             gtk_text_buffer_get_start_iter(m_buffer, &start);
 791             gtk_text_buffer_get_end_iter(m_buffer, &end);
 792             au_check_range(&start, &end);
 793         }
 794     }
 795     else // single line
 796     {
 797         // do the right thing with Enter presses depending on whether we have
 798         // wxTE_PROCESS_ENTER or not
 799         GTKSetActivatesDefault();
 800     }
 801
 802
 803     g_signal_connect (m_text, "copy-clipboard",
 804                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 805     g_signal_connect (m_text, "cut-clipboard",
 806                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 807     g_signal_connect (m_text, "paste-clipboard",
 808                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 809
 810     m_cursor = wxCursor( wxCURSOR_IBEAM );
 811
 812     return true;
 813 }
 814
 815 GtkEditable *wxTextCtrl::GetEditable() const
 816 {
 817     wxCHECK_MSG( IsSingleLine(), NULL, "shouldn't be called for multiline" );
 818
 819     return GTK_EDITABLE(m_text);
 820 }
 821
 822 // ----------------------------------------------------------------------------
 823 // flags handling
 824 // ----------------------------------------------------------------------------
 825
 826 void wxTextCtrl::GTKSetEditable()
 827 {
 828     gboolean editable = !HasFlag(wxTE_READONLY);
 829     if ( IsSingleLine() )
 830         gtk_editable_set_editable(GTK_EDITABLE(m_text), editable);
 831     else
 832         gtk_text_view_set_editable(GTK_TEXT_VIEW(m_text), editable);
 833 }
 834
 835 void wxTextCtrl::GTKSetVisibility()
 836 {
 837     wxCHECK_RET( IsSingleLine(),
 838                  "wxTE_PASSWORD is for single line text controls only" );
 839
 840     gtk_entry_set_visibility(GTK_ENTRY(m_text), !HasFlag(wxTE_PASSWORD));
 841 }
 842
 843 void wxTextCtrl::GTKSetActivatesDefault()
 844 {
 845     wxCHECK_RET( IsSingleLine(),
 846                  "wxTE_PROCESS_ENTER is for single line text controls only" );
 847
 848     gtk_entry_set_activates_default(GTK_ENTRY(m_text),
 849                                     !HasFlag(wxTE_PROCESS_ENTER));
 850 }
 851
 852 void wxTextCtrl::GTKSetWrapMode()
 853 {
 854     // no wrapping in single line controls
 855     if ( !IsMultiLine() )
 856         return;
 857
 858     // translate wx wrapping style to GTK+
 859     GtkWrapMode wrap;
 860     if ( HasFlag( wxTE_DONTWRAP ) )
 861         wrap = GTK_WRAP_NONE;
 862     else if ( HasFlag( wxTE_CHARWRAP ) )
 863         wrap = GTK_WRAP_CHAR;
 864     else if ( HasFlag( wxTE_WORDWRAP ) )
 865         wrap = GTK_WRAP_WORD;
 866     else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 867         wrap = GTK_WRAP_WORD_CHAR;
 868
 869     gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 870 }
 871
 872 void wxTextCtrl::GTKSetJustification()
 873 {
 874     if ( IsMultiLine() )
 875     {
 876         GtkJustification just;
 877         if ( HasFlag(wxTE_RIGHT) )
 878             just = GTK_JUSTIFY_RIGHT;
 879         else if ( HasFlag(wxTE_CENTRE) )
 880             just = GTK_JUSTIFY_CENTER;
 881         else // wxTE_LEFT == 0
 882             just = GTK_JUSTIFY_LEFT;
 883
 884         gtk_text_view_set_justification(GTK_TEXT_VIEW(m_text), just);
 885     }
 886     else // single line
 887     {
 888         gfloat align;
 889         if ( HasFlag(wxTE_RIGHT) )
 890             align = 1.0;
 891         else if ( HasFlag(wxTE_CENTRE) )
 892             align = 0.5;
 893         else // single line
 894             align = 0.0;
 895
 896         gtk_entry_set_alignment(GTK_ENTRY(m_text), align);
 897     }
 898 }
 899
 900 void wxTextCtrl::SetWindowStyleFlag(long style)
 901 {
 902     long styleOld = GetWindowStyleFlag();
 903
 904     wxTextCtrlBase::SetWindowStyleFlag(style);
 905
 906     if ( (style & wxTE_READONLY) != (styleOld & wxTE_READONLY) )
 907         GTKSetEditable();
 908
 909     if ( (style & wxTE_PASSWORD) != (styleOld & wxTE_PASSWORD) )
 910         GTKSetVisibility();
 911
 912     if ( (style & wxTE_PROCESS_ENTER) != (styleOld & wxTE_PROCESS_ENTER) )
 913         GTKSetActivatesDefault();
 914
 915     static const long flagsWrap = wxTE_WORDWRAP | wxTE_CHARWRAP | wxTE_DONTWRAP;
 916     if ( (style & flagsWrap) != (styleOld & flagsWrap) )
 917         GTKSetWrapMode();
 918
 919     static const long flagsAlign = wxTE_LEFT | wxTE_CENTRE | wxTE_RIGHT;
 920     if ( (style & flagsAlign) != (styleOld & flagsAlign) )
 921         GTKSetJustification();
 922 }
 923
 924 // ----------------------------------------------------------------------------
 925 // control value
 926 // ----------------------------------------------------------------------------
 927
 928 wxString wxTextCtrl::GetValue() const
 929 {
 930     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 931
 932     if ( IsMultiLine() )
 933     {
 934         GtkTextIter start;
 935         gtk_text_buffer_get_start_iter( m_buffer, &start );
 936         GtkTextIter end;
 937         gtk_text_buffer_get_end_iter( m_buffer, &end );
 938         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 939
 940         return wxGTK_CONV_BACK(text);
 941     }
 942     else // single line
 943     {
 944         return wxTextEntry::GetValue();
 945     }
 946 }
 947
 948 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 949 {
 950     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 951     // encoding?
 952
 953     // first check the default text style (we intentionally don't check the
 954     // style for the current position as it doesn't make sense for SetValue())
 955     const wxTextAttr& style = GetDefaultStyle();
 956     wxFontEncoding enc = style.HasFontEncoding() ? style.GetFontEncoding()
 957                                          : wxFONTENCODING_SYSTEM;
 958
 959     // fall back to the controls font if no style
 960     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 961         enc = GetFont().GetEncoding();
 962
 963     return enc;
 964 }
 965
 966 bool wxTextCtrl::IsEmpty() const
 967 {
 968     if ( IsMultiLine() )
 969         return gtk_text_buffer_get_char_count(m_buffer) == 0;
 970
 971     return wxTextEntry::IsEmpty();
 972 }
 973
 974 void wxTextCtrl::DoSetValue( const wxString &value, int flags )
 975 {
 976     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 977
 978     m_modified = false;
 979
 980     if ( !IsMultiLine() )
 981     {
 982         wxTextEntry::DoSetValue(value, flags);
 983         return;
 984     }
 985
 986     if (value.IsEmpty())
 987     {
 988         if ( !(flags & SetValue_SendEvent) )
 989             EnableTextChangedEvents(false);
 990
 991         gtk_text_buffer_set_text( m_buffer, "", 0 );
 992
 993         if ( !(flags & SetValue_SendEvent) )
 994             EnableTextChangedEvents(true);
 995
 996         return;
 997     }
 998
 999 #if wxUSE_UNICODE
1000     const wxCharBuffer buffer(value.utf8_str());
1001 #else
1002     wxFontEncoding enc = m_defaultStyle.HasFont()
1003                             ? m_defaultStyle.GetFont().GetEncoding()
1004                             : wxFONTENCODING_SYSTEM;
1005     if ( enc == wxFONTENCODING_SYSTEM )
1006         enc = GetTextEncoding();
1007
1008     const wxCharBuffer buffer(wxGTK_CONV_ENC(value, enc));
1009     if ( !buffer )
1010     {
1011         // see comment in WriteText() as to why we must warn the user about
1012         // this
1013         wxLogWarning(_("Failed to set text in the text control."));
1014         return;
1015     }
1016 #endif
1017
1018     if ( !(flags & SetValue_SendEvent) )
1019     {
1020         EnableTextChangedEvents(false);
1021     }
1022
1023     gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
1024
1025     if ( !m_defaultStyle.IsDefault() )
1026     {
1027         GtkTextIter start, end;
1028         gtk_text_buffer_get_bounds( m_buffer, &start, &end );
1029         wxGtkTextApplyTagsFromAttr(m_widget, m_buffer, m_defaultStyle,
1030                                    &start, &end);
1031     }
1032
1033     if ( !(flags & SetValue_SendEvent) )
1034     {
1035         EnableTextChangedEvents(true);
1036     }
1037 }
1038
1039 void wxTextCtrl::WriteText( const wxString &text )
1040 {
1041     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1042
1043     // we're changing the text programmatically
1044     DontMarkDirtyOnNextChange();
1045
1046     if ( !IsMultiLine() )
1047     {
1048         wxTextEntry::WriteText(text);
1049         return;
1050     }
1051
1052 #if wxUSE_UNICODE
1053     const wxCharBuffer buffer(text.utf8_str());
1054 #else
1055     // check if we have a specific style for the current position
1056     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
1057     wxTextAttr style;
1058     if ( GetStyle(GetInsertionPoint(), style) && style.HasFontEncoding() )
1059     {
1060         enc = style.GetFontEncoding();
1061     }
1062
1063     if ( enc == wxFONTENCODING_SYSTEM )
1064         enc = GetTextEncoding();
1065
1066     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
1067     if ( !buffer )
1068     {
1069         // we must log an error here as losing the text like this can be a
1070         // serious problem (e.g. imagine the document edited by user being
1071         // empty instead of containing the correct text)
1072         wxLogWarning(_("Failed to insert text in the control."));
1073         return;
1074     }
1075 #endif
1076
1077     // First remove the selection if there is one
1078     // TODO:  Is there an easier GTK specific way to do this?
1079     long from, to;
1080     GetSelection(&from, &to);
1081     if (from != to)
1082         Remove(from, to);
1083
1084     // Insert the text
1085     wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
1086
1087     GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
1088     // Scroll to cursor, but only if scrollbar thumb is at the very bottom
1089     // won't work when frozen, text view is not using m_buffer then
1090     if (!IsFrozen() && wxIsSameDouble(adj->value, adj->upper - adj->page_size))
1091     {
1092         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
1093                 gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
1094     }
1095 }
1096
1097 wxString wxTextCtrl::GetLineText( long lineNo ) const
1098 {
1099     wxString result;
1100     if ( IsMultiLine() )
1101     {
1102         GtkTextIter line;
1103         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
1104
1105         GtkTextIter end = line;
1106         // avoid skipping to the next line end if this one is empty
1107         if ( !gtk_text_iter_ends_line(&line) )
1108             gtk_text_iter_forward_to_line_end(&end);
1109
1110         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
1111         result = wxGTK_CONV_BACK(text);
1112     }
1113     else
1114     {
1115         if (lineNo == 0)
1116             result = GetValue();
1117     }
1118     return result;
1119 }
1120
1121 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
1122 {
1123   /* If you implement this, don't forget to update the documentation!
1124    * (file docs/latex/wx/text.tex) */
1125     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
1126 }
1127
1128 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
1129 {
1130     if ( IsMultiLine() )
1131     {
1132         GtkTextIter iter;
1133
1134         if (pos > GetLastPosition())
1135             return false;
1136
1137         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
1138
1139         if ( y )
1140             *y = gtk_text_iter_get_line(&iter);
1141         if ( x )
1142             *x = gtk_text_iter_get_line_offset(&iter);
1143     }
1144     else // single line control
1145     {
1146         if ( pos <= GTK_ENTRY(m_text)->text_length )
1147         {
1148             if ( y )
1149                 *y = 0;
1150             if ( x )
1151                 *x = pos;
1152         }
1153         else
1154         {
1155             // index out of bounds
1156             return false;
1157         }
1158     }
1159
1160     return true;
1161 }
1162
1163 long wxTextCtrl::XYToPosition(long x, long y ) const
1164 {
1165     if ( IsSingleLine() )
1166         return 0;
1167
1168     GtkTextIter iter;
1169     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1170         return -1;
1171
1172     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1173     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1174         return -1;
1175
1176     return gtk_text_iter_get_offset(&iter) + x;
1177 }
1178
1179 int wxTextCtrl::GetLineLength(long lineNo) const
1180 {
1181     if ( IsMultiLine() )
1182     {
1183         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1184         if (lineNo > last_line)
1185             return -1;
1186
1187         GtkTextIter iter;
1188         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1189         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1190         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1191     }
1192     else
1193     {
1194         wxString str = GetLineText (lineNo);
1195         return (int) str.length();
1196     }
1197 }
1198
1199 int wxTextCtrl::GetNumberOfLines() const
1200 {
1201     if ( IsMultiLine() )
1202     {
1203         return gtk_text_buffer_get_line_count( m_buffer );
1204     }
1205     else // single line
1206     {
1207         return 1;
1208     }
1209 }
1210
1211 void wxTextCtrl::SetInsertionPoint( long pos )
1212 {
1213     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1214
1215     if ( IsMultiLine() )
1216     {
1217         GtkTextIter iter;
1218         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1219         gtk_text_buffer_place_cursor( m_buffer, &iter );
1220         GtkTextMark* mark = gtk_text_buffer_get_insert(m_buffer);
1221         if (IsFrozen())
1222             // defer until Thaw, text view is not using m_buffer now
1223             m_showPositionOnThaw = mark;
1224         else
1225             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1226     }
1227     else // single line
1228     {
1229         wxTextEntry::SetInsertionPoint(pos);
1230     }
1231 }
1232
1233 void wxTextCtrl::SetEditable( bool editable )
1234 {
1235     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1236
1237     if ( IsMultiLine() )
1238     {
1239         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1240     }
1241     else // single line
1242     {
1243         wxTextEntry::SetEditable(editable);
1244     }
1245 }
1246
1247 bool wxTextCtrl::Enable( bool enable )
1248 {
1249     if (!wxWindowBase::Enable(enable))
1250     {
1251         // nothing to do
1252         return false;
1253     }
1254
1255     gtk_widget_set_sensitive( m_text, enable );
1256
1257     return true;
1258 }
1259
1260 // wxGTK-specific: called recursively by Enable,
1261 // to give widgets an opportunity to correct their colours after they
1262 // have been changed by Enable
1263 void wxTextCtrl::OnEnabled(bool WXUNUSED(enable))
1264 {
1265     // If we have a custom background colour, we use this colour in both
1266     // disabled and enabled mode, or we end up with a different colour under the
1267     // text.
1268     wxColour oldColour = GetBackgroundColour();
1269     if (oldColour.Ok())
1270     {
1271         // Need to set twice or it'll optimize the useful stuff out
1272         if (oldColour == * wxWHITE)
1273             SetBackgroundColour(*wxBLACK);
1274         else
1275             SetBackgroundColour(*wxWHITE);
1276         SetBackgroundColour(oldColour);
1277     }
1278 }
1279
1280 void wxTextCtrl::MarkDirty()
1281 {
1282     m_modified = true;
1283 }
1284
1285 void wxTextCtrl::DiscardEdits()
1286 {
1287     m_modified = false;
1288 }
1289
1290 // ----------------------------------------------------------------------------
1291 // event handling
1292 // ----------------------------------------------------------------------------
1293
1294 void wxTextCtrl::EnableTextChangedEvents(bool enable)
1295 {
1296     if ( enable )
1297     {
1298         g_signal_handlers_unblock_by_func(GetTextObject(),
1299             (gpointer)gtk_text_changed_callback, this);
1300     }
1301     else // disable events
1302     {
1303         g_signal_handlers_block_by_func(GetTextObject(),
1304             (gpointer)gtk_text_changed_callback, this);
1305     }
1306 }
1307
1308 bool wxTextCtrl::IgnoreTextUpdate()
1309 {
1310     if ( m_countUpdatesToIgnore > 0 )
1311     {
1312         m_countUpdatesToIgnore--;
1313
1314         return true;
1315     }
1316
1317     return false;
1318 }
1319
1320 bool wxTextCtrl::MarkDirtyOnChange()
1321 {
1322     if ( m_dontMarkDirty )
1323     {
1324         m_dontMarkDirty = false;
1325
1326         return false;
1327     }
1328
1329     return true;
1330 }
1331
1332 void wxTextCtrl::SetSelection( long from, long to )
1333 {
1334     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1335
1336     if (from == -1 && to == -1)
1337     {
1338         from = 0;
1339         to = GetValue().length();
1340     }
1341
1342     if ( IsMultiLine() )
1343     {
1344         GtkTextIter fromi, toi;
1345         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1346         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1347
1348         gtk_text_buffer_select_range( m_buffer, &fromi, &toi );
1349     }
1350     else // single line
1351     {
1352         wxTextEntry::SetSelection(from, to);
1353     }
1354 }
1355
1356 void wxTextCtrl::ShowPosition( long pos )
1357 {
1358     if (IsMultiLine())
1359     {
1360         GtkTextIter iter;
1361         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, int(pos));
1362         GtkTextMark* mark = gtk_text_buffer_get_mark(m_buffer, "ShowPosition");
1363         gtk_text_buffer_move_mark(m_buffer, mark, &iter);
1364         if (IsFrozen())
1365             // defer until Thaw, text view is not using m_buffer now
1366             m_showPositionOnThaw = mark;
1367         else
1368             gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(m_text), mark);
1369     }
1370 }
1371
1372 wxTextCtrlHitTestResult
1373 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1374 {
1375     if ( !IsMultiLine() )
1376     {
1377         // not supported
1378         return wxTE_HT_UNKNOWN;
1379     }
1380
1381     int x, y;
1382     gtk_text_view_window_to_buffer_coords
1383     (
1384         GTK_TEXT_VIEW(m_text),
1385         GTK_TEXT_WINDOW_TEXT,
1386         pt.x, pt.y,
1387         &x, &y
1388     );
1389
1390     GtkTextIter iter;
1391     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1392     if ( pos )
1393         *pos = gtk_text_iter_get_offset(&iter);
1394
1395     return wxTE_HT_ON_TEXT;
1396 }
1397
1398 long wxTextCtrl::GetInsertionPoint() const
1399 {
1400     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1401
1402     if ( IsMultiLine() )
1403     {
1404         // There is no direct accessor for the cursor, but
1405         // internally, the cursor is the "mark" called
1406         // "insert" in the text view's btree structure.
1407
1408         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1409         GtkTextIter cursor;
1410         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1411
1412         return gtk_text_iter_get_offset( &cursor );
1413     }
1414     else
1415     {
1416         return wxTextEntry::GetInsertionPoint();
1417     }
1418 }
1419
1420 wxTextPos wxTextCtrl::GetLastPosition() const
1421 {
1422     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1423
1424     int pos = 0;
1425
1426     if ( IsMultiLine() )
1427     {
1428         GtkTextIter end;
1429         gtk_text_buffer_get_end_iter( m_buffer, &end );
1430
1431         pos = gtk_text_iter_get_offset( &end );
1432     }
1433     else // single line
1434     {
1435         pos = wxTextEntry::GetLastPosition();
1436     }
1437
1438     return (long)pos;
1439 }
1440
1441 void wxTextCtrl::Remove( long from, long to )
1442 {
1443     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1444
1445     if ( IsMultiLine() )
1446     {
1447         GtkTextIter fromi, toi;
1448         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1449         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1450
1451         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1452     }
1453     else // single line
1454     {
1455         wxTextEntry::Remove(from, to);
1456     }
1457 }
1458
1459 void wxTextCtrl::Cut()
1460 {
1461     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1462
1463     if ( IsMultiLine() )
1464         g_signal_emit_by_name (m_text, "cut-clipboard");
1465     else
1466         wxTextEntry::Cut();
1467 }
1468
1469 void wxTextCtrl::Copy()
1470 {
1471     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1472
1473     if ( IsMultiLine() )
1474         g_signal_emit_by_name (m_text, "copy-clipboard");
1475     else
1476         wxTextEntry::Copy();
1477 }
1478
1479 void wxTextCtrl::Paste()
1480 {
1481     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1482
1483     if ( IsMultiLine() )
1484         g_signal_emit_by_name (m_text, "paste-clipboard");
1485     else
1486         wxTextEntry::Paste();
1487 }
1488
1489 // If the return values from and to are the same, there is no
1490 // selection.
1491 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1492 {
1493     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1494
1495     if ( !IsMultiLine() )
1496     {
1497         wxTextEntry::GetSelection(fromOut, toOut);
1498         return;
1499     }
1500
1501     gint from, to;
1502
1503     GtkTextIter ifrom, ito;
1504     if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1505     {
1506         from = gtk_text_iter_get_offset(&ifrom);
1507         to = gtk_text_iter_get_offset(&ito);
1508
1509         if ( from > to )
1510         {
1511             // exchange them to be compatible with wxMSW
1512             gint tmp = from;
1513             from = to;
1514             to = tmp;
1515         }
1516     }
1517     else // no selection
1518     {
1519         from =
1520         to = GetInsertionPoint();
1521     }
1522
1523     if ( fromOut )
1524         *fromOut = from;
1525     if ( toOut )
1526         *toOut = to;
1527 }
1528
1529
1530 bool wxTextCtrl::IsEditable() const
1531 {
1532     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1533
1534     if ( IsMultiLine() )
1535     {
1536         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1537     }
1538     else
1539     {
1540         return wxTextEntry::IsEditable();
1541     }
1542 }
1543
1544 bool wxTextCtrl::IsModified() const
1545 {
1546     return m_modified;
1547 }
1548
1549 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1550 {
1551     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1552
1553     if ( key_event.GetKeyCode() == WXK_RETURN )
1554     {
1555         if ( HasFlag(wxTE_PROCESS_ENTER) )
1556         {
1557             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1558             event.SetEventObject(this);
1559             event.SetString(GetValue());
1560             if ( HandleWindowEvent(event) )
1561                 return;
1562         }
1563     }
1564
1565     key_event.Skip();
1566 }
1567
1568 GtkWidget* wxTextCtrl::GetConnectWidget()
1569 {
1570     return GTK_WIDGET(m_text);
1571 }
1572
1573 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1574 {
1575     if ( IsMultiLine() )
1576     {
1577         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1578                                         GTK_TEXT_WINDOW_TEXT );
1579     }
1580     else
1581     {
1582         return GTK_ENTRY(m_text)->text_area;
1583     }
1584 }
1585
1586 // the font will change for subsequent text insertiongs
1587 bool wxTextCtrl::SetFont( const wxFont &font )
1588 {
1589     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1590
1591     if ( !wxTextCtrlBase::SetFont(font) )
1592     {
1593         // font didn't change, nothing to do
1594         return false;
1595     }
1596
1597     if ( IsMultiLine() )
1598     {
1599         SetUpdateFont(true);
1600
1601         m_defaultStyle.SetFont(font);
1602
1603         ChangeFontGlobally();
1604     }
1605
1606     return true;
1607 }
1608
1609 void wxTextCtrl::ChangeFontGlobally()
1610 {
1611     // this method is very inefficient and hence should be called as rarely as
1612     // possible!
1613     //
1614     // TODO: it can be implemented much more efficiently for GTK2
1615     wxASSERT_MSG( IsMultiLine(),
1616                   _T("shouldn't be called for single line controls") );
1617
1618     wxString value = GetValue();
1619     if ( !value.empty() )
1620     {
1621         SetUpdateFont(false);
1622
1623         Clear();
1624         AppendText(value);
1625     }
1626 }
1627
1628 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1629 {
1630     if ( !wxControl::SetForegroundColour(colour) )
1631         return false;
1632
1633     // update default fg colour too
1634     m_defaultStyle.SetTextColour(colour);
1635
1636     return true;
1637 }
1638
1639 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1640 {
1641     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1642
1643     if ( !wxControl::SetBackgroundColour( colour ) )
1644         return false;
1645
1646     if (!m_backgroundColour.Ok())
1647         return false;
1648
1649     // change active background color too
1650     m_defaultStyle.SetBackgroundColour( colour );
1651
1652     return true;
1653 }
1654
1655 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1656 {
1657     if ( IsMultiLine() )
1658     {
1659         if ( style.IsDefault() )
1660         {
1661             // nothing to do
1662             return true;
1663         }
1664
1665         gint l = gtk_text_buffer_get_char_count( m_buffer );
1666
1667         wxCHECK_MSG( start >= 0 && end <= l, false,
1668                      _T("invalid range in wxTextCtrl::SetStyle") );
1669
1670         GtkTextIter starti, endi;
1671         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1672         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1673
1674         wxGtkTextApplyTagsFromAttr( m_widget, m_buffer, style, &starti, &endi );
1675
1676         return true;
1677     }
1678     //else: single line text controls don't support styles
1679
1680     return false;
1681 }
1682
1683 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1684 {
1685     gtk_widget_modify_style(m_text, style);
1686 }
1687
1688 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1689 {
1690     Cut();
1691 }
1692
1693 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1694 {
1695     Copy();
1696 }
1697
1698 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1699 {
1700     Paste();
1701 }
1702
1703 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1704 {
1705     Undo();
1706 }
1707
1708 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1709 {
1710     Redo();
1711 }
1712
1713 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1714 {
1715     event.Enable( CanCut() );
1716 }
1717
1718 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1719 {
1720     event.Enable( CanCopy() );
1721 }
1722
1723 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1724 {
1725     event.Enable( CanPaste() );
1726 }
1727
1728 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1729 {
1730     event.Enable( CanUndo() );
1731 }
1732
1733 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1734 {
1735     event.Enable( CanRedo() );
1736 }
1737
1738 wxSize wxTextCtrl::DoGetBestSize() const
1739 {
1740     // FIXME should be different for multi-line controls...
1741     wxSize ret( wxControl::DoGetBestSize() );
1742     wxSize best(80, ret.y);
1743     CacheBestSize(best);
1744     return best;
1745 }
1746
1747 // ----------------------------------------------------------------------------
1748 // freeze/thaw
1749 // ----------------------------------------------------------------------------
1750
1751 void wxTextCtrl::DoFreeze()
1752 {
1753     wxCHECK_RET(m_text != NULL, wxT("invalid text ctrl"));
1754
1755     wxWindow::DoFreeze();
1756
1757     if ( HasFlag(wxTE_MULTILINE) )
1758     {
1759         GTKFreezeWidget(m_text);
1760
1761         // removing buffer dramatically speeds up insertion:
1762         g_object_ref(m_buffer);
1763         GtkTextBuffer* buf_new = gtk_text_buffer_new(NULL);
1764         GtkTextMark* mark = GTK_TEXT_VIEW(m_text)->first_para_mark;
1765         gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), buf_new);
1766         // gtk_text_view_set_buffer adds its own reference
1767         g_object_unref(buf_new);
1768         // This mark should be deleted when the buffer is changed,
1769         // but it's not (in GTK+ up to at least 2.10.6).
1770         // Otherwise these anonymous marks start to build up in the buffer,
1771         // and Freeze takes longer and longer each time it is called.
1772         if (GTK_IS_TEXT_MARK(mark) && !gtk_text_mark_get_deleted(mark))
1773             gtk_text_buffer_delete_mark(m_buffer, mark);
1774     }
1775 }
1776
1777 void wxTextCtrl::DoThaw()
1778 {
1779     if ( HasFlag(wxTE_MULTILINE) )
1780     {
1781         // reattach buffer:
1782         gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1783         g_object_unref(m_buffer);
1784
1785         if (m_showPositionOnThaw != NULL)
1786         {
1787             gtk_text_view_scroll_mark_onscreen(
1788                 GTK_TEXT_VIEW(m_text), m_showPositionOnThaw);
1789             m_showPositionOnThaw = NULL;
1790         }
1791
1792         // and thaw the window
1793         GTKThawWidget(m_text);
1794     }
1795
1796     wxWindow::DoThaw();
1797 }
1798
1799 // ----------------------------------------------------------------------------
1800 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1801 // ----------------------------------------------------------------------------
1802
1803 // FIXME: when dragging on a link the sample gets an "Unknown event".
1804 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1805 // a buggy sample, or something else
1806 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1807 {
1808     event.Skip();
1809     if( !HasFlag(wxTE_AUTO_URL) )
1810         return;
1811
1812     gint x, y;
1813     GtkTextIter start, end;
1814     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1815                                                 "wxUrl");
1816
1817     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1818                                           event.GetX(), event.GetY(), &x, &y);
1819
1820     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1821     if (!gtk_text_iter_has_tag(&end, tag))
1822     {
1823         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1824                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1825         return;
1826     }
1827
1828     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1829                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1830
1831     start = end;
1832     if(!gtk_text_iter_begins_tag(&start, tag))
1833         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1834     if(!gtk_text_iter_ends_tag(&end, tag))
1835         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1836
1837     // Native context menu is probably not desired on an URL.
1838     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1839     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1840         event.Skip(false);
1841
1842     wxTextUrlEvent url_event(m_windowId, event,
1843                              gtk_text_iter_get_offset(&start),
1844                              gtk_text_iter_get_offset(&end));
1845
1846     InitCommandEvent(url_event);
1847     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1848     //event.Skip(!HandleWindowEvent(url_event));
1849     HandleWindowEvent(url_event);
1850 }
1851
1852 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
1853 {
1854     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
1855
1856     // GtkTextView starts a drag operation when left mouse button is pressed
1857     // and ends it when it is released and if it doesn't get the release event
1858     // the next click on a control results in an assertion failure inside
1859     // gtk_text_view_start_selection_drag() which simply *kills* the program
1860     // without anything we can do about it, so always let GTK+ have this event
1861     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
1862 }
1863
1864 // static
1865 wxVisualAttributes
1866 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1867 {
1868     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1869 }
1870
1871 #endif // wxUSE_TEXTCTRL