src/gtk1/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation "textctrl.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #include "wx/textctrl.h"
  18 #include "wx/utils.h"
  19 #include "wx/intl.h"
  20 #include "wx/log.h"
  21 #include "wx/settings.h"
  22 #include "wx/panel.h"
  23 #include "wx/strconv.h"
  24 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  25
  26 #include <sys/types.h>
  27 #include <sys/stat.h>
  28 #include <ctype.h>
  29 #include "wx/math.h"
  30
  31 #include "wx/gtk/private.h"
  32 #include <gdk/gdkkeysyms.h>
  33
  34 //-----------------------------------------------------------------------------
  35 // idle system
  36 //-----------------------------------------------------------------------------
  37
  38 extern void wxapp_install_idle_handler();
  39 extern bool g_isIdle;
  40
  41 //-----------------------------------------------------------------------------
  42 // data
  43 //-----------------------------------------------------------------------------
  44
  45 extern wxCursor   g_globalCursor;
  46 extern wxWindowGTK *g_delayedFocus;
  47
  48 // ----------------------------------------------------------------------------
  49 // helpers
  50 // ----------------------------------------------------------------------------
  51
  52 #ifdef __WXGTK20__
  53 extern "C" {
  54 static void wxGtkOnRemoveTag(GtkTextBuffer *buffer,
  55                              GtkTextTag *tag,
  56                              GtkTextIter *start,
  57                              GtkTextIter *end,
  58                              char *prefix)
  59 {
  60     gchar *name;
  61     g_object_get (tag, "name", &name, NULL);
  62
  63     if (!name || strncmp(name, prefix, strlen(prefix)))
  64         // anonymous tag or not starting with prefix - don't remove
  65         g_signal_stop_emission_by_name(buffer, "remove_tag");
  66
  67     g_free(name);
  68 }
  69 }
  70
  71 extern "C" {
  72 static void wxGtkTextApplyTagsFromAttr(GtkTextBuffer *text_buffer,
  73                                        const wxTextAttr& attr,
  74                                        GtkTextIter *start,
  75                                        GtkTextIter *end)
  76 {
  77     static gchar buf[1024];
  78     GtkTextTag *tag;
  79
  80     gulong remove_handler_id = g_signal_connect( text_buffer, "remove_tag",
  81             G_CALLBACK(wxGtkOnRemoveTag), gpointer("WX"));
  82     gtk_text_buffer_remove_all_tags(text_buffer, start, end);
  83     g_signal_handler_disconnect( text_buffer, remove_handler_id );
  84
  85     if (attr.HasFont())
  86     {
  87         char *font_string;
  88         PangoFontDescription *font_description = attr.GetFont().GetNativeFontInfo()->description;
  89         font_string = pango_font_description_to_string(font_description);
  90         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string);
  91         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  92                                          buf );
  93         if (!tag)
  94             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  95                                               "font-desc", font_description,
  96                                               NULL );
  97         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  98         g_free (font_string);
  99     }
 100
 101     if (attr.HasTextColour())
 102     {
 103         GdkColor *colFg = attr.GetTextColour().GetColor();
 104         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
 105                    colFg->red, colFg->green, colFg->blue);
 106         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 107                                          buf );
 108         if (!tag)
 109             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 110                                               "foreground-gdk", colFg, NULL );
 111         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 112     }
 113
 114     if (attr.HasBackgroundColour())
 115     {
 116         GdkColor *colBg = attr.GetBackgroundColour().GetColor();
 117         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
 118                    colBg->red, colBg->green, colBg->blue);
 119         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 120                                          buf );
 121         if (!tag)
 122             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 123                                               "background-gdk", colBg, NULL );
 124         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 125     }
 126
 127     if (attr.HasAlignment())
 128     {
 129         GtkTextIter para_start, para_end = *end;
 130         gtk_text_buffer_get_iter_at_line( text_buffer,
 131                                           &para_start,
 132                                           gtk_text_iter_get_line(start) );
 133         gtk_text_iter_forward_line(&para_end);
 134
 135         remove_handler_id = g_signal_connect( text_buffer, "remove_tag",
 136                                               G_CALLBACK(wxGtkOnRemoveTag),
 137                                               gpointer("WXALIGNMENT"));
 138         gtk_text_buffer_remove_all_tags( text_buffer, &para_start, &para_end );
 139         g_signal_handler_disconnect( text_buffer, remove_handler_id );
 140
 141         GtkJustification align;
 142         switch (attr.GetAlignment())
 143         {
 144             default:
 145                 align = GTK_JUSTIFY_LEFT;
 146                 break;
 147             case wxTEXT_ALIGNMENT_RIGHT:
 148                 align = GTK_JUSTIFY_RIGHT;
 149                 break;
 150             case wxTEXT_ALIGNMENT_CENTER:
 151                 align = GTK_JUSTIFY_CENTER;
 152                 break;
 153             // gtk+ doesn't support justify as of gtk+-2.7.4
 154         }
 155
 156         g_snprintf(buf, sizeof(buf), "WXALIGNMENT %d", align);
 157         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 158                                          buf );
 159         if (!tag)
 160             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 161                                               "justification", align, NULL );
 162         gtk_text_buffer_apply_tag( text_buffer, tag, &para_start, &para_end );
 163     }
 164 }
 165 }
 166
 167 extern "C" {
 168 static void wxGtkTextInsert(GtkWidget *text,
 169                             GtkTextBuffer *text_buffer,
 170                             const wxTextAttr& attr,
 171                             wxCharBuffer buffer)
 172
 173 {
 174     gint start_offset;
 175     GtkTextIter iter, start;
 176
 177     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 178                                      gtk_text_buffer_get_insert (text_buffer) );
 179     start_offset = gtk_text_iter_get_offset (&iter);
 180     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 181
 182     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 183
 184     wxGtkTextApplyTagsFromAttr(text_buffer, attr, &start, &iter);
 185 }
 186 }
 187 #else
 188 extern "C" {
 189 static void wxGtkTextInsert(GtkWidget *text,
 190                             const wxTextAttr& attr,
 191                             const char *txt,
 192                             size_t len)
 193 {
 194     GdkFont *font = attr.HasFont() ? attr.GetFont().GetInternalFont()
 195                                    : NULL;
 196
 197     GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
 198                                            : NULL;
 199
 200     GdkColor *colBg = attr.HasBackgroundColour()
 201                         ? attr.GetBackgroundColour().GetColor()
 202                         : NULL;
 203
 204     gtk_text_insert( GTK_TEXT(text), font, colFg, colBg, txt, len );
 205 }
 206 }
 207 #endif // GTK 1.x
 208
 209 // ----------------------------------------------------------------------------
 210 // "insert_text" for GtkEntry
 211 // ----------------------------------------------------------------------------
 212
 213 extern "C" {
 214 static void
 215 gtk_insert_text_callback(GtkEditable *editable,
 216                          const gchar *new_text,
 217                          gint new_text_length,
 218                          gint *position,
 219                          wxTextCtrl *win)
 220 {
 221     if (g_isIdle)
 222         wxapp_install_idle_handler();
 223
 224     // we should only be called if we have a max len limit at all
 225     GtkEntry *entry = GTK_ENTRY (editable);
 226
 227     wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
 228
 229     // check that we don't overflow the max length limit
 230     //
 231     // FIXME: this doesn't work when we paste a string which is going to be
 232     //        truncated
 233     if ( entry->text_length == entry->text_max_length )
 234     {
 235         // we don't need to run the base class version at all
 236         gtk_signal_emit_stop_by_name(GTK_OBJECT(editable), "insert_text");
 237
 238         // remember that the next changed signal is to be ignored to avoid
 239         // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
 240         win->IgnoreNextTextUpdate();
 241
 242         // and generate the correct one ourselves
 243         wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
 244         event.SetEventObject(win);
 245         event.SetString(win->GetValue());
 246         win->GetEventHandler()->ProcessEvent( event );
 247     }
 248 }
 249 }
 250
 251 #ifdef __WXGTK20__
 252 // Implementation of wxTE_AUTO_URL for wxGTK2 by Mart Raudsepp,
 253
 254 extern "C" {
 255 static void
 256 au_apply_tag_callback(GtkTextBuffer *buffer,
 257                       GtkTextTag *tag,
 258                       GtkTextIter *start,
 259                       GtkTextIter *end,
 260                       gpointer textctrl)
 261 {
 262     if(tag == gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl"))
 263         g_signal_stop_emission_by_name(buffer, "apply_tag");
 264 }
 265 }
 266
 267 //-----------------------------------------------------------------------------
 268 //  GtkTextCharPredicates for gtk_text_iter_*_find_char
 269 //-----------------------------------------------------------------------------
 270
 271 extern "C" {
 272 static gboolean
 273 pred_whitespace (gunichar ch, gpointer user_data)
 274 {
 275     return g_unichar_isspace(ch);
 276 }
 277 }
 278
 279 extern "C" {
 280 static gboolean
 281 pred_non_whitespace (gunichar ch, gpointer user_data)
 282 {
 283     return !g_unichar_isspace(ch);
 284 }
 285 }
 286
 287 extern "C" {
 288 static gboolean
 289 pred_nonpunct (gunichar ch, gpointer user_data)
 290 {
 291     return !g_unichar_ispunct(ch);
 292 }
 293 }
 294
 295 extern "C" {
 296 static gboolean
 297 pred_nonpunct_or_slash (gunichar ch, gpointer user_data)
 298 {
 299     return !g_unichar_ispunct(ch) || ch == '/';
 300 }
 301 }
 302
 303 //-----------------------------------------------------------------------------
 304 //  Check for links between s and e and correct tags as necessary
 305 //-----------------------------------------------------------------------------
 306
 307 // This function should be made match better while being efficient at one point.
 308 // Most probably with a row of regular expressions.
 309 extern "C" {
 310 static void
 311 au_check_word( GtkTextIter *s, GtkTextIter *e )
 312 {
 313     static const char *URIPrefixes[] =
 314     {
 315         "http://",
 316         "ftp://",
 317         "www.",
 318         "ftp.",
 319         "mailto://",
 320         "https://",
 321         "file://",
 322         "nntp://",
 323         "news://",
 324         "telnet://",
 325         "mms://",
 326         "gopher://",
 327         "prospero://",
 328         "wais://",
 329     };
 330
 331     GtkTextIter start = *s, end = *e;
 332     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 333
 334     // Get our special link tag
 335     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 336
 337     // Get rid of punctuation from beginning and end.
 338     // Might want to move this to au_check_range if an improved link checking doesn't
 339     // use some intelligent punctuation checking itself (beware of undesired iter modifications).
 340     if(g_unichar_ispunct( gtk_text_iter_get_char( &start ) ) )
 341         gtk_text_iter_forward_find_char( &start, pred_nonpunct, NULL, e );
 342
 343     gtk_text_iter_backward_find_char( &end, pred_nonpunct_or_slash, NULL, &start );
 344     gtk_text_iter_forward_char(&end);
 345
 346     gchar* text = gtk_text_iter_get_text( &start, &end );
 347     size_t len = strlen(text), prefix_len;
 348     size_t n;
 349
 350     for( n = 0; n < WXSIZEOF(URIPrefixes); ++n )
 351     {
 352         prefix_len = strlen(URIPrefixes[n]);
 353         if((len > prefix_len) && !strncasecmp(text, URIPrefixes[n], prefix_len))
 354             break;
 355     }
 356
 357     if(n < WXSIZEOF(URIPrefixes))
 358     {
 359         gulong signal_id = g_signal_handler_find(buffer,
 360                                                  (GSignalMatchType) (G_SIGNAL_MATCH_FUNC),
 361                                                  0, 0, NULL,
 362                                                  (gpointer)au_apply_tag_callback, NULL);
 363
 364         g_signal_handler_block(buffer, signal_id);
 365         gtk_text_buffer_apply_tag(buffer, tag, &start, &end);
 366         g_signal_handler_unblock(buffer, signal_id);
 367     }
 368 }
 369 }
 370
 371 extern "C" {
 372 static void
 373 au_check_range(GtkTextIter *s,
 374                GtkTextIter *range_end)
 375 {
 376     GtkTextIter range_start = *s;
 377     GtkTextIter word_end;
 378     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 379     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 380
 381     gtk_text_buffer_remove_tag(buffer, tag, s, range_end);
 382
 383     if(g_unichar_isspace(gtk_text_iter_get_char(&range_start)))
 384         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 385
 386     while(!gtk_text_iter_equal(&range_start, range_end))
 387     {
 388         word_end = range_start;
 389         gtk_text_iter_forward_find_char(&word_end, pred_whitespace, NULL, range_end);
 390
 391         // Now we should have a word delimited by range_start and word_end, correct link tags
 392         au_check_word(&range_start, &word_end);
 393
 394         range_start = word_end;
 395         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 396     }
 397 }
 398 }
 399
 400 //-----------------------------------------------------------------------------
 401 //  "insert-text" for GtkTextBuffer
 402 //-----------------------------------------------------------------------------
 403
 404 extern "C" {
 405 static void
 406 au_insert_text_callback(GtkTextBuffer *buffer,
 407                         GtkTextIter *end,
 408                         gchar *text,
 409                         gint len,
 410                         wxTextCtrl *win)
 411 {
 412     if (!len || !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 413         return;
 414
 415     GtkTextIter start = *end;
 416     gtk_text_iter_backward_chars(&start, g_utf8_strlen(text, len));
 417
 418     GtkTextIter line_start = start;
 419     GtkTextIter line_end = *end;
 420     GtkTextIter words_start = start;
 421     GtkTextIter words_end = *end;
 422
 423     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(&start));
 424     gtk_text_iter_forward_to_line_end(&line_end);
 425     gtk_text_iter_backward_find_char(&words_start, pred_whitespace, NULL, &line_start);
 426     gtk_text_iter_forward_find_char(&words_end, pred_whitespace, NULL, &line_end);
 427
 428     au_check_range(&words_start, &words_end);
 429 }
 430 }
 431
 432 //-----------------------------------------------------------------------------
 433 //  "delete-range" for GtkTextBuffer
 434 //-----------------------------------------------------------------------------
 435
 436 extern "C" {
 437 static void
 438 au_delete_range_callback(GtkTextBuffer *buffer,
 439                          GtkTextIter *start,
 440                          GtkTextIter *end,
 441                          wxTextCtrl *win)
 442 {
 443     if( !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 444         return;
 445
 446     GtkTextIter line_start = *start, line_end = *end;
 447
 448     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(start));
 449     gtk_text_iter_forward_to_line_end(&line_end);
 450     gtk_text_iter_backward_find_char(start, pred_whitespace, NULL, &line_start);
 451     gtk_text_iter_forward_find_char(end, pred_whitespace, NULL, &line_end);
 452
 453     au_check_range(start, end);
 454 }
 455 }
 456
 457
 458 #endif
 459
 460 //-----------------------------------------------------------------------------
 461 //  "changed"
 462 //-----------------------------------------------------------------------------
 463
 464 extern "C" {
 465 static void
 466 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
 467 {
 468     if ( win->IgnoreTextUpdate() )
 469         return;
 470
 471     if (!win->m_hasVMT) return;
 472
 473     if (g_isIdle)
 474         wxapp_install_idle_handler();
 475
 476     win->SetModified();
 477 #ifndef __WXGTK20__
 478     win->UpdateFontIfNeeded();
 479 #endif // !__WXGTK20__
 480
 481     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
 482     event.SetEventObject( win );
 483     win->GetEventHandler()->ProcessEvent( event );
 484 }
 485 }
 486
 487 //-----------------------------------------------------------------------------
 488 // "expose_event" from scrolled window and textview
 489 //-----------------------------------------------------------------------------
 490
 491 #ifdef __WXGTK20__
 492 extern "C" {
 493 static gboolean
 494 gtk_text_exposed_callback( GtkWidget *widget, GdkEventExpose *event, wxTextCtrl *win )
 495 {
 496     return TRUE;
 497 }
 498 }
 499 #endif
 500
 501 //-----------------------------------------------------------------------------
 502 // "changed" from vertical scrollbar
 503 //-----------------------------------------------------------------------------
 504
 505 #ifndef __WXGTK20__
 506 extern "C" {
 507 static void
 508 gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
 509 {
 510     if (!win->m_hasVMT) return;
 511
 512     if (g_isIdle)
 513         wxapp_install_idle_handler();
 514
 515     win->CalculateScrollbar();
 516 }
 517 }
 518 #endif
 519
 520 // ----------------------------------------------------------------------------
 521 // redraw callback for multiline text
 522 // ----------------------------------------------------------------------------
 523
 524 #ifndef __WXGTK20__
 525
 526 // redrawing a GtkText from inside a wxYield() call results in crashes (the
 527 // text sample shows it in its "Add lines" command which shows wxProgressDialog
 528 // which implicitly calls wxYield()) so we override GtkText::draw() and simply
 529 // don't do anything if we're inside wxYield()
 530
 531 extern bool wxIsInsideYield;
 532
 533 extern "C" {
 534     typedef void (*GtkDrawCallback)(GtkWidget *widget, GdkRectangle *rect);
 535 }
 536
 537 static GtkDrawCallback gs_gtk_text_draw = NULL;
 538
 539 extern "C" {
 540 static void wxgtk_text_draw( GtkWidget *widget, GdkRectangle *rect)
 541 {
 542     if ( !wxIsInsideYield )
 543     {
 544         wxCHECK_RET( gs_gtk_text_draw != wxgtk_text_draw,
 545                      _T("infinite recursion in wxgtk_text_draw aborted") );
 546
 547         gs_gtk_text_draw(widget, rect);
 548     }
 549 }
 550 }
 551
 552 #endif // __WXGTK20__
 553
 554 //-----------------------------------------------------------------------------
 555 //  wxTextCtrl
 556 //-----------------------------------------------------------------------------
 557
 558 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
 559
 560 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 561     EVT_CHAR(wxTextCtrl::OnChar)
 562
 563     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 564     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 565     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 566     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 567     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 568
 569     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 570     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 571     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 572     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 573     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 574
 575 #ifdef __WXGTK20__
 576     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 577     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 578     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 579     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 580     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 581     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 582     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 583     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 584     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 585 #endif
 586 END_EVENT_TABLE()
 587
 588 void wxTextCtrl::Init()
 589 {
 590     m_ignoreNextUpdate =
 591     m_modified = false;
 592     SetUpdateFont(false);
 593     m_text =
 594     m_vScrollbar = (GtkWidget *)NULL;
 595 #ifdef __WXGTK20__
 596     m_frozenness = 0;
 597     m_gdkHandCursor = NULL;
 598     m_gdkXTermCursor = NULL;
 599 #endif
 600 }
 601
 602 wxTextCtrl::~wxTextCtrl()
 603 {
 604 #ifdef __WXGTK20__
 605     if(m_gdkHandCursor)
 606         gdk_cursor_unref(m_gdkHandCursor);
 607     if(m_gdkXTermCursor)
 608         gdk_cursor_unref(m_gdkXTermCursor);
 609 #endif
 610 }
 611
 612 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 613                         wxWindowID id,
 614                         const wxString &value,
 615                         const wxPoint &pos,
 616                         const wxSize &size,
 617                         long style,
 618                         const wxValidator& validator,
 619                         const wxString &name )
 620 {
 621     Init();
 622
 623     Create( parent, id, value, pos, size, style, validator, name );
 624 }
 625
 626 bool wxTextCtrl::Create( wxWindow *parent,
 627                          wxWindowID id,
 628                          const wxString &value,
 629                          const wxPoint &pos,
 630                          const wxSize &size,
 631                          long style,
 632                          const wxValidator& validator,
 633                          const wxString &name )
 634 {
 635     m_needParent = true;
 636     m_acceptsFocus = true;
 637
 638     if (!PreCreation( parent, pos, size ) ||
 639         !CreateBase( parent, id, pos, size, style, validator, name ))
 640     {
 641         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 642         return false;
 643     }
 644
 645
 646     m_vScrollbarVisible = false;
 647
 648     bool multi_line = (style & wxTE_MULTILINE) != 0;
 649
 650     if (multi_line)
 651     {
 652 #ifdef __WXGTK20__
 653         // Create view
 654         m_text = gtk_text_view_new();
 655
 656         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 657
 658         // create scrolled window
 659         m_widget = gtk_scrolled_window_new( NULL, NULL );
 660         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 661                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 662
 663         // Insert view into scrolled window
 664         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 665
 666         // translate wx wrapping style to GTK+
 667         GtkWrapMode wrap;
 668         if ( HasFlag( wxTE_DONTWRAP ) )
 669             wrap = GTK_WRAP_NONE;
 670         else if ( HasFlag( wxTE_CHARWRAP ) )
 671             wrap = GTK_WRAP_CHAR;
 672         else if ( HasFlag( wxTE_WORDWRAP ) )
 673             wrap = GTK_WRAP_WORD;
 674         else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 675         {
 676             // GTK_WRAP_WORD_CHAR seems to be new in GTK+ 2.4
 677 #ifdef __WXGTK24__
 678             if ( !gtk_check_version(2,4,0) )
 679             {
 680                 wrap = GTK_WRAP_WORD_CHAR;
 681             }
 682             else
 683 #endif
 684             wrap = GTK_WRAP_WORD;
 685         }
 686
 687         gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 688
 689         if (!HasFlag(wxNO_BORDER))
 690             gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(m_widget), GTK_SHADOW_IN );
 691
 692         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 693
 694         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 695 #else // GTK+ 1
 696         // create our control ...
 697         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 698
 699         // ... and put into the upper left hand corner of the table
 700         bool bHasHScrollbar = false;
 701         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 702         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 703         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 704                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 705                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 706                        0, 0);
 707
 708         // always wrap words
 709         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 710
 711         // finally, put the vertical scrollbar in the upper right corner
 712         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 713         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 714         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 715                      GTK_FILL,
 716                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 717                      0, 0);
 718 #endif // GTK+ 2/1
 719     }
 720     else
 721     {
 722         // a single-line text control: no need for scrollbars
 723         m_widget =
 724         m_text = gtk_entry_new();
 725
 726 #ifdef __WXGTK20__
 727         if (style & wxNO_BORDER)
 728             g_object_set( GTK_ENTRY(m_text), "has-frame", FALSE, NULL );
 729 #endif
 730     }
 731
 732     m_parent->DoAddChild( this );
 733
 734     m_focusWidget = m_text;
 735
 736     PostCreation(size);
 737
 738     if (multi_line)
 739         gtk_widget_show(m_text);
 740
 741 #ifndef __WXGTK20__
 742     if (multi_line)
 743     {
 744         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 745           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 746
 747         // only initialize gs_gtk_text_draw once, starting from the next the
 748         // klass::draw will already be wxgtk_text_draw
 749         if ( !gs_gtk_text_draw )
 750         {
 751             GtkDrawCallback&
 752                 draw = GTK_WIDGET_CLASS(GTK_OBJECT(m_text)->klass)->draw;
 753
 754             gs_gtk_text_draw = draw;
 755
 756             draw = wxgtk_text_draw;
 757         }
 758     }
 759 #endif // GTK+ 1.x
 760
 761     if (!value.empty())
 762     {
 763 #ifdef __WXGTK20__
 764         SetValue( value );
 765 #else
 766
 767 #if !GTK_CHECK_VERSION(1, 2, 0)
 768         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 769         // gtk_editable_insert_text()
 770         gtk_widget_realize(m_text);
 771 #endif // GTK 1.0
 772
 773         gint tmp = 0;
 774 #if wxUSE_UNICODE
 775         wxWX2MBbuf val = value.mbc_str();
 776         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 777 #else
 778         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 779 #endif
 780
 781         if (multi_line)
 782         {
 783             // Bring editable's cursor uptodate. Bug in GTK.
 784             SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 785         }
 786
 787 #endif
 788     }
 789
 790     if (style & wxTE_PASSWORD)
 791     {
 792         if (!multi_line)
 793             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 794     }
 795
 796     if (style & wxTE_READONLY)
 797     {
 798         if (!multi_line)
 799             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 800 #ifdef __WXGTK20__
 801         else
 802             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 803 #else
 804     }
 805     else
 806     {
 807         if (multi_line)
 808             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 809 #endif
 810     }
 811
 812 #ifdef __WXGTK20__
 813     if (multi_line)
 814     {
 815         if (style & wxTE_RIGHT)
 816             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_RIGHT );
 817         else if (style & wxTE_CENTRE)
 818             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_CENTER );
 819         // Left justify (alignment) is the default and we don't need to apply GTK_JUSTIFY_LEFT
 820     }
 821     else
 822     {
 823 #ifdef __WXGTK24__
 824         // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 825         if (!gtk_check_version(2,4,0))
 826         {
 827             if (style & wxTE_RIGHT)
 828                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 1.0 );
 829             else if (style & wxTE_CENTRE)
 830                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 0.5 );
 831         }
 832 #endif
 833     }
 834 #endif // __WXGTK20__
 835
 836     // We want to be notified about text changes.
 837 #ifdef __WXGTK20__
 838     if (multi_line)
 839     {
 840         g_signal_connect( G_OBJECT(m_buffer), "changed",
 841             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 842
 843         // .. and handle URLs on multi-line controls with wxTE_AUTO_URL style
 844         if (style & wxTE_AUTO_URL)
 845         {
 846             GtkTextIter start, end;
 847             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 848             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 849
 850             // We create our wxUrl tag here for slight efficiency gain - we
 851             // don't have to check for the tag existance in callbacks,
 852             // hereby it's guaranteed to exist.
 853             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 854                                        "foreground", "blue",
 855                                        "underline", PANGO_UNDERLINE_SINGLE,
 856                                        NULL);
 857
 858             // Check for URLs after each text change
 859             g_signal_connect_after( G_OBJECT(m_buffer), "insert_text",
 860                 GTK_SIGNAL_FUNC(au_insert_text_callback), (gpointer)this);
 861             g_signal_connect_after( G_OBJECT(m_buffer), "delete_range",
 862                 GTK_SIGNAL_FUNC(au_delete_range_callback), (gpointer)this);
 863
 864             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 865             // block this callback temporarily. This takes care of gtk+ internal
 866             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 867             // which is undesired because only a part of the URL might be copied.
 868             // The insert-text signal emitted inside it will take care of newly formed
 869             // or wholly copied URLs.
 870             g_signal_connect( G_OBJECT(m_buffer), "apply_tag",
 871                 GTK_SIGNAL_FUNC(au_apply_tag_callback), NULL);
 872
 873             // Check for URLs in the initial string passed to Create
 874             gtk_text_buffer_get_start_iter(m_buffer, &start);
 875             gtk_text_buffer_get_end_iter(m_buffer, &end);
 876             au_check_range(&start, &end);
 877         }
 878     }
 879     else
 880 #endif
 881
 882     {
 883         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 884             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 885     }
 886
 887     m_cursor = wxCursor( wxCURSOR_IBEAM );
 888
 889     wxTextAttr attrDef(GetForegroundColour(), GetBackgroundColour(), GetFont());
 890     SetDefaultStyle( attrDef );
 891
 892     return true;
 893 }
 894
 895
 896 void wxTextCtrl::CalculateScrollbar()
 897 {
 898 #ifndef __WXGTK20__
 899     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 900
 901     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 902
 903     if (adj->upper - adj->page_size < 0.8)
 904     {
 905         if (m_vScrollbarVisible)
 906         {
 907             gtk_widget_hide( m_vScrollbar );
 908             m_vScrollbarVisible = false;
 909         }
 910     }
 911     else
 912     {
 913         if (!m_vScrollbarVisible)
 914         {
 915             gtk_widget_show( m_vScrollbar );
 916             m_vScrollbarVisible = true;
 917         }
 918     }
 919 #endif
 920 }
 921
 922 wxString wxTextCtrl::GetValue() const
 923 {
 924     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 925
 926     wxString tmp;
 927     if (m_windowStyle & wxTE_MULTILINE)
 928     {
 929 #ifdef __WXGTK20__
 930         GtkTextIter start;
 931         gtk_text_buffer_get_start_iter( m_buffer, &start );
 932         GtkTextIter end;
 933         gtk_text_buffer_get_end_iter( m_buffer, &end );
 934         gchar *text = gtk_text_buffer_get_text( m_buffer, &start, &end, TRUE );
 935
 936 #if wxUSE_UNICODE
 937         wxWCharBuffer buffer( wxConvUTF8.cMB2WX( text ) );
 938 #else
 939         wxCharBuffer buffer( wxConvLocal.cWC2WX( wxConvUTF8.cMB2WC( text ) ) );
 940 #endif
 941         if ( buffer )
 942             tmp = buffer;
 943
 944         g_free( text );
 945 #else
 946         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 947         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 948         tmp = text;
 949         g_free( text );
 950 #endif
 951     }
 952     else
 953     {
 954         tmp = wxGTK_CONV_BACK( gtk_entry_get_text( GTK_ENTRY(m_text) ) );
 955     }
 956
 957     return tmp;
 958 }
 959
 960 void wxTextCtrl::SetValue( const wxString &value )
 961 {
 962     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 963
 964     if (m_windowStyle & wxTE_MULTILINE)
 965     {
 966 #ifdef __WXGTK20__
 967
 968 #if wxUSE_UNICODE
 969         wxCharBuffer buffer( wxConvUTF8.cWX2MB( value) );
 970 #else
 971         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( value ) ) );
 972 #endif
 973         if (gtk_text_buffer_get_char_count(m_buffer) != 0)
 974             IgnoreNextTextUpdate();
 975
 976         if ( !buffer )
 977         {
 978             // what else can we do? at least don't crash...
 979             return;
 980         }
 981
 982         gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 983
 984 #else
 985         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 986         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 987         len = 0;
 988         gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
 989 #endif
 990     }
 991     else
 992     {
 993         gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV( value ) );
 994     }
 995
 996     // GRG, Jun/2000: Changed this after a lot of discussion in
 997     //   the lists. wxWidgets 2.2 will have a set of flags to
 998     //   customize this behaviour.
 999     SetInsertionPoint(0);
1000
1001     m_modified = false;
1002 }
1003
1004 void wxTextCtrl::WriteText( const wxString &text )
1005 {
1006     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1007
1008     if ( text.empty() )
1009         return;
1010
1011     // gtk_text_changed_callback() will set m_modified to true but m_modified
1012     // shouldn't be changed by the program writing to the text control itself,
1013     // so save the old value and restore when we're done
1014     bool oldModified = m_modified;
1015
1016     if ( m_windowStyle & wxTE_MULTILINE )
1017     {
1018 #ifdef __WXGTK20__
1019
1020 #if wxUSE_UNICODE
1021         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
1022 #else
1023         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
1024 #endif
1025         if ( !buffer )
1026         {
1027             // what else can we do? at least don't crash...
1028             return;
1029         }
1030
1031         // TODO: Call whatever is needed to delete the selection.
1032         wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
1033
1034         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
1035         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
1036         if ( adj->value == adj->upper - adj->page_size )
1037         {
1038             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
1039                     gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
1040         }
1041 #else // GTK 1.x
1042         // After cursor movements, gtk_text_get_point() is wrong by one.
1043         gtk_text_set_point( GTK_TEXT(m_text), GET_EDITABLE_POS(m_text) );
1044
1045         // always use m_defaultStyle, even if it is empty as otherwise
1046         // resetting the style and appending some more text wouldn't work: if
1047         // we don't specify the style explicitly, the old style would be used
1048         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
1049         wxGtkTextInsert(m_text, m_defaultStyle, text.c_str(), text.Len());
1050
1051         // we called wxGtkTextInsert with correct font, no need to do anything
1052         // in UpdateFontIfNeeded() any longer
1053         if ( !text.empty() )
1054         {
1055             SetUpdateFont(false);
1056         }
1057
1058         // Bring editable's cursor back uptodate.
1059         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
1060 #endif // GTK 1.x/2.0
1061     }
1062     else // single line
1063     {
1064         // First remove the selection if there is one
1065         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
1066
1067         // This moves the cursor pos to behind the inserted text.
1068         gint len = GET_EDITABLE_POS(m_text);
1069
1070 #ifdef __WXGTK20__
1071
1072 #if wxUSE_UNICODE
1073         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
1074 #else
1075         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
1076 #endif
1077         if ( !buffer )
1078         {
1079             // what else can we do? at least don't crash...
1080             return;
1081         }
1082
1083         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
1084
1085 #else
1086         gtk_editable_insert_text( GTK_EDITABLE(m_text), text.c_str(), text.Len(), &len );
1087 #endif
1088
1089         // Bring entry's cursor uptodate.
1090         gtk_entry_set_position( GTK_ENTRY(m_text), len );
1091     }
1092
1093     m_modified = oldModified;
1094 }
1095
1096 void wxTextCtrl::AppendText( const wxString &text )
1097 {
1098     SetInsertionPointEnd();
1099     WriteText( text );
1100 }
1101
1102 wxString wxTextCtrl::GetLineText( long lineNo ) const
1103 {
1104     if (m_windowStyle & wxTE_MULTILINE)
1105     {
1106 #ifndef __WXGTK20__
1107         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
1108         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
1109
1110         if (text)
1111         {
1112             wxString buf;
1113             long i;
1114             int currentLine = 0;
1115             for (i = 0; currentLine != lineNo && text[i]; i++ )
1116                 if (text[i] == '\n')
1117             currentLine++;
1118             // Now get the text
1119             int j;
1120             for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
1121                 buf += text[i];
1122
1123             g_free( text );
1124             return buf;
1125         }
1126         else
1127         {
1128             return wxEmptyString;
1129         }
1130 #else
1131         GtkTextIter line;
1132         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
1133         GtkTextIter end = line;
1134         gtk_text_iter_forward_to_line_end(&end);
1135         gchar *text = gtk_text_buffer_get_text(m_buffer,&line,&end,TRUE);
1136         wxString result(wxGTK_CONV_BACK(text));
1137         g_free(text);
1138         return result;
1139 #endif
1140     }
1141     else
1142     {
1143         if (lineNo == 0) return GetValue();
1144         return wxEmptyString;
1145     }
1146 }
1147
1148 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
1149 {
1150   /* If you implement this, don't forget to update the documentation!
1151    * (file docs/latex/wx/text.tex) */
1152     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
1153 }
1154
1155 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
1156 {
1157     if ( m_windowStyle & wxTE_MULTILINE )
1158     {
1159 #ifdef __WXGTK20__
1160         GtkTextIter iter;
1161         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
1162         if (gtk_text_iter_is_end(&iter))
1163             return false;
1164
1165         *y = gtk_text_iter_get_line(&iter);
1166         *x = gtk_text_iter_get_line_offset(&iter);
1167 #else
1168         wxString text = GetValue();
1169
1170         // cast to prevent warning. But pos really should've been unsigned.
1171         if( (unsigned long)pos > text.Len()  )
1172             return false;
1173
1174         *x=0;   // First Col
1175         *y=0;   // First Line
1176
1177         const wxChar* stop = text.c_str() + pos;
1178         for ( const wxChar *p = text.c_str(); p < stop; p++ )
1179         {
1180             if (*p == wxT('\n'))
1181             {
1182                 (*y)++;
1183                 *x=0;
1184             }
1185             else
1186                 (*x)++;
1187         }
1188 #endif
1189     }
1190     else // single line control
1191     {
1192         if ( pos <= GTK_ENTRY(m_text)->text_length )
1193         {
1194             *y = 0;
1195             *x = pos;
1196         }
1197         else
1198         {
1199             // index out of bounds
1200             return false;
1201         }
1202     }
1203
1204     return true;
1205 }
1206
1207 long wxTextCtrl::XYToPosition(long x, long y ) const
1208 {
1209     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
1210
1211 #ifdef __WXGTK20__
1212     GtkTextIter iter;
1213     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1214         return -1;
1215
1216     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1217     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1218         return -1;
1219
1220     return gtk_text_iter_get_offset(&iter) + x;
1221 #else
1222     long pos=0;
1223     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
1224
1225     pos += x;
1226     return pos;
1227 #endif
1228 }
1229
1230 int wxTextCtrl::GetLineLength(long lineNo) const
1231 {
1232 #ifdef __WXGTK20__
1233     if (m_windowStyle & wxTE_MULTILINE)
1234     {
1235         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1236         if (lineNo > last_line)
1237             return -1;
1238
1239         GtkTextIter iter;
1240         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1241         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1242         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1243     }
1244     else
1245 #endif
1246     {
1247         wxString str = GetLineText (lineNo);
1248         return (int) str.Length();
1249     }
1250 }
1251
1252 int wxTextCtrl::GetNumberOfLines() const
1253 {
1254     if (m_windowStyle & wxTE_MULTILINE)
1255     {
1256 #ifdef __WXGTK20__
1257         return gtk_text_buffer_get_line_count( m_buffer );
1258 #else
1259         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
1260         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
1261
1262         if (text)
1263         {
1264             int currentLine = 0;
1265             for (int i = 0; i < len; i++ )
1266             {
1267                 if (text[i] == '\n')
1268                     currentLine++;
1269             }
1270             g_free( text );
1271
1272             // currentLine is 0 based, add 1 to get number of lines
1273             return currentLine + 1;
1274         }
1275         else
1276         {
1277             return 0;
1278         }
1279 #endif
1280     }
1281     else
1282     {
1283         return 1;
1284     }
1285 }
1286
1287 void wxTextCtrl::SetInsertionPoint( long pos )
1288 {
1289     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1290
1291     if ( IsMultiLine() )
1292     {
1293 #ifdef __WXGTK20__
1294         GtkTextIter iter;
1295         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1296         gtk_text_buffer_place_cursor( m_buffer, &iter );
1297         gtk_text_view_scroll_mark_onscreen
1298         (
1299             GTK_TEXT_VIEW(m_text),
1300             gtk_text_buffer_get_insert( m_buffer )
1301         );
1302 #else // GTK+ 1.x
1303         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
1304           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
1305
1306         /* we fake a set_point by inserting and deleting. as the user
1307            isn't supposed to get to know about this non-sense, we
1308            disconnect so that no events are sent to the user program. */
1309
1310         gint tmp = (gint)pos;
1311         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
1312         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
1313
1314         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
1315           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
1316
1317         // bring editable's cursor uptodate. Bug in GTK.
1318         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
1319 #endif // GTK+ 2/1
1320     }
1321     else
1322     {
1323         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
1324
1325         // Bring editable's cursor uptodate. Bug in GTK.
1326         SET_EDITABLE_POS(m_text, (guint32)pos);
1327     }
1328 }
1329
1330 void wxTextCtrl::SetInsertionPointEnd()
1331 {
1332     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1333
1334     if (m_windowStyle & wxTE_MULTILINE)
1335     {
1336 #ifdef __WXGTK20__
1337         GtkTextIter end;
1338         gtk_text_buffer_get_end_iter( m_buffer, &end );
1339         gtk_text_buffer_place_cursor( m_buffer, &end );
1340 #else
1341         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
1342 #endif
1343     }
1344     else
1345     {
1346         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
1347     }
1348 }
1349
1350 void wxTextCtrl::SetEditable( bool editable )
1351 {
1352     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1353
1354     if (m_windowStyle & wxTE_MULTILINE)
1355     {
1356 #ifdef __WXGTK20__
1357         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1358 #else
1359         gtk_text_set_editable( GTK_TEXT(m_text), editable );
1360 #endif
1361     }
1362     else
1363     {
1364         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
1365     }
1366 }
1367
1368 bool wxTextCtrl::Enable( bool enable )
1369 {
1370     if (!wxWindowBase::Enable(enable))
1371     {
1372         // nothing to do
1373         return false;
1374     }
1375
1376     if (m_windowStyle & wxTE_MULTILINE)
1377     {
1378 #ifdef __WXGTK20__
1379         SetEditable( enable );
1380 #else
1381         gtk_text_set_editable( GTK_TEXT(m_text), enable );
1382         OnParentEnable(enable);
1383 #endif
1384     }
1385     else
1386     {
1387         gtk_widget_set_sensitive( m_text, enable );
1388     }
1389
1390     return true;
1391 }
1392
1393 // wxGTK-specific: called recursively by Enable,
1394 // to give widgets an oppprtunity to correct their colours after they
1395 // have been changed by Enable
1396 void wxTextCtrl::OnParentEnable( bool enable )
1397 {
1398     // If we have a custom background colour, we use this colour in both
1399     // disabled and enabled mode, or we end up with a different colour under the
1400     // text.
1401     wxColour oldColour = GetBackgroundColour();
1402     if (oldColour.Ok())
1403     {
1404         // Need to set twice or it'll optimize the useful stuff out
1405         if (oldColour == * wxWHITE)
1406             SetBackgroundColour(*wxBLACK);
1407         else
1408             SetBackgroundColour(*wxWHITE);
1409         SetBackgroundColour(oldColour);
1410     }
1411 }
1412
1413 void wxTextCtrl::MarkDirty()
1414 {
1415     m_modified = true;
1416 }
1417
1418 void wxTextCtrl::DiscardEdits()
1419 {
1420     m_modified = false;
1421 }
1422
1423 // ----------------------------------------------------------------------------
1424 // max text length support
1425 // ----------------------------------------------------------------------------
1426
1427 void wxTextCtrl::IgnoreNextTextUpdate()
1428 {
1429     m_ignoreNextUpdate = true;
1430 }
1431
1432 bool wxTextCtrl::IgnoreTextUpdate()
1433 {
1434     if ( m_ignoreNextUpdate )
1435     {
1436         m_ignoreNextUpdate = false;
1437
1438         return true;
1439     }
1440
1441     return false;
1442 }
1443
1444 void wxTextCtrl::SetMaxLength(unsigned long len)
1445 {
1446     if ( !HasFlag(wxTE_MULTILINE) )
1447     {
1448         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
1449
1450         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
1451         // we had tried to enter more text than allowed by max text length and
1452         // the text wasn't really changed
1453         //
1454         // to detect this and generate TEXT_MAXLEN event instead of
1455         // TEXT_CHANGED one in this case we also catch "insert_text" signal
1456         //
1457         // when max len is set to 0 we disconnect our handler as it means that
1458         // we shouldn't check anything any more
1459         if ( len )
1460         {
1461             gtk_signal_connect( GTK_OBJECT(m_text),
1462                                 "insert_text",
1463                                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
1464                                 (gpointer)this);
1465         }
1466         else // no checking
1467         {
1468             gtk_signal_disconnect_by_func
1469             (
1470                 GTK_OBJECT(m_text),
1471                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
1472                 (gpointer)this
1473             );
1474         }
1475     }
1476 }
1477
1478 void wxTextCtrl::SetSelection( long from, long to )
1479 {
1480     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1481
1482     if (from == -1 && to == -1)
1483     {
1484         from = 0;
1485         to = GetValue().Length();
1486     }
1487
1488 #ifndef __WXGTK20__
1489     if ( (m_windowStyle & wxTE_MULTILINE) &&
1490          !GTK_TEXT(m_text)->line_start_cache )
1491     {
1492         // tell the programmer that it didn't work
1493         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
1494         return;
1495     }
1496 #endif
1497
1498     if (m_windowStyle & wxTE_MULTILINE)
1499     {
1500 #ifdef __WXGTK20__
1501         GtkTextIter fromi, toi;
1502         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1503         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1504
1505         gtk_text_buffer_place_cursor( m_buffer, &toi );
1506         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1507 #else
1508         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1509 #endif
1510     }
1511     else
1512     {
1513         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1514     }
1515 }
1516
1517 void wxTextCtrl::ShowPosition( long pos )
1518 {
1519     if (m_windowStyle & wxTE_MULTILINE)
1520     {
1521 #ifdef __WXGTK20__
1522         GtkTextIter iter;
1523         gtk_text_buffer_get_start_iter( m_buffer, &iter );
1524         gtk_text_iter_set_offset( &iter, pos );
1525         GtkTextMark *mark = gtk_text_buffer_create_mark( m_buffer, NULL, &iter, TRUE );
1526         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1527 #else // GTK 1.x
1528         GtkAdjustment *vp = GTK_TEXT(m_text)->vadj;
1529         float totalLines =  (float) GetNumberOfLines();
1530         long posX;
1531         long posY;
1532         PositionToXY(pos, &posX, &posY);
1533         float posLine = (float) posY;
1534         float p = (posLine/totalLines)*(vp->upper - vp->lower) + vp->lower;
1535         gtk_adjustment_set_value(GTK_TEXT(m_text)->vadj, p);
1536 #endif // GTK 1.x/2.x
1537     }
1538 }
1539
1540 #ifdef __WXGTK20__
1541
1542 wxTextCtrlHitTestResult
1543 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1544 {
1545     if ( !IsMultiLine() )
1546     {
1547         // not supported
1548         return wxTE_HT_UNKNOWN;
1549     }
1550
1551     int x, y;
1552     gtk_text_view_window_to_buffer_coords
1553     (
1554         GTK_TEXT_VIEW(m_text),
1555         GTK_TEXT_WINDOW_TEXT,
1556         pt.x, pt.y,
1557         &x, &y
1558     );
1559
1560     GtkTextIter iter;
1561     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1562     if ( pos )
1563         *pos = gtk_text_iter_get_offset(&iter);
1564
1565     return wxTE_HT_ON_TEXT;
1566 }
1567
1568 #endif // __WXGTK20__
1569
1570 long wxTextCtrl::GetInsertionPoint() const
1571 {
1572     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1573
1574 #ifdef __WXGTK20__
1575     if (m_windowStyle & wxTE_MULTILINE)
1576     {
1577         // There is no direct accessor for the cursor, but
1578         // internally, the cursor is the "mark" called
1579         // "insert" in the text view's btree structure.
1580
1581         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1582         GtkTextIter cursor;
1583         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1584
1585         return gtk_text_iter_get_offset( &cursor );
1586     }
1587     else
1588 #endif
1589     {
1590         return (long) GET_EDITABLE_POS(m_text);
1591     }
1592 }
1593
1594 wxTextPos wxTextCtrl::GetLastPosition() const
1595 {
1596     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1597
1598     int pos = 0;
1599
1600     if (m_windowStyle & wxTE_MULTILINE)
1601     {
1602 #ifdef __WXGTK20__
1603         GtkTextIter end;
1604         gtk_text_buffer_get_end_iter( m_buffer, &end );
1605
1606         pos = gtk_text_iter_get_offset( &end );
1607 #else
1608         pos = gtk_text_get_length( GTK_TEXT(m_text) );
1609 #endif
1610     }
1611     else
1612     {
1613         pos = GTK_ENTRY(m_text)->text_length;
1614     }
1615
1616     return (long)pos;
1617 }
1618
1619 void wxTextCtrl::Remove( long from, long to )
1620 {
1621     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1622
1623 #ifdef __WXGTK20__
1624     if (m_windowStyle & wxTE_MULTILINE)
1625     {
1626         GtkTextIter fromi, toi;
1627         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1628         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1629
1630         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1631     }
1632     else // single line
1633 #endif
1634     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1635 }
1636
1637 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1638 {
1639     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1640
1641     Remove( from, to );
1642
1643     if (!value.empty())
1644     {
1645 #ifdef __WXGTK20__
1646         SetInsertionPoint( from );
1647         WriteText( value );
1648 #else // GTK 1.x
1649         gint pos = (gint)from;
1650 #if wxUSE_UNICODE
1651         wxWX2MBbuf buf = value.mbc_str();
1652         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
1653 #else
1654         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
1655 #endif // wxUSE_UNICODE
1656 #endif // GTK 1.x/2.x
1657     }
1658 }
1659
1660 void wxTextCtrl::Cut()
1661 {
1662     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1663
1664 #ifdef __WXGTK20__
1665     if (m_windowStyle & wxTE_MULTILINE)
1666         g_signal_emit_by_name(m_text, "cut-clipboard");
1667     else
1668 #endif
1669         gtk_editable_cut_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1670 }
1671
1672 void wxTextCtrl::Copy()
1673 {
1674     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1675
1676 #ifdef __WXGTK20__
1677     if (m_windowStyle & wxTE_MULTILINE)
1678         g_signal_emit_by_name(m_text, "copy-clipboard");
1679     else
1680 #endif
1681         gtk_editable_copy_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1682 }
1683
1684 void wxTextCtrl::Paste()
1685 {
1686     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1687
1688 #ifdef __WXGTK20__
1689     if (m_windowStyle & wxTE_MULTILINE)
1690         g_signal_emit_by_name(m_text, "paste-clipboard");
1691     else
1692 #endif
1693         gtk_editable_paste_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1694 }
1695
1696 // Undo/redo
1697 void wxTextCtrl::Undo()
1698 {
1699     // TODO
1700     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1701 }
1702
1703 void wxTextCtrl::Redo()
1704 {
1705     // TODO
1706     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1707 }
1708
1709 bool wxTextCtrl::CanUndo() const
1710 {
1711     // TODO
1712     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1713     return false;
1714 }
1715
1716 bool wxTextCtrl::CanRedo() const
1717 {
1718     // TODO
1719     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1720     return false;
1721 }
1722
1723 // If the return values from and to are the same, there is no
1724 // selection.
1725 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1726 {
1727     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1728
1729     gint from = -1;
1730     gint to = -1;
1731     bool haveSelection = false;
1732
1733 #ifdef __WXGTK20__
1734      if (m_windowStyle & wxTE_MULTILINE)
1735      {
1736          GtkTextIter ifrom, ito;
1737          if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1738          {
1739              haveSelection = true;
1740              from = gtk_text_iter_get_offset(&ifrom);
1741              to = gtk_text_iter_get_offset(&ito);
1742          }
1743      }
1744      else  // not multi-line
1745      {
1746          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1747                                                  &from, &to) )
1748          {
1749              haveSelection = true;
1750          }
1751      }
1752 #else //  not GTK2
1753      if ( (GTK_EDITABLE(m_text)->has_selection) )
1754      {
1755          haveSelection = true;
1756          from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
1757          to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
1758      }
1759 #endif
1760
1761      if (! haveSelection )
1762           from = to = GetInsertionPoint();
1763
1764      if ( from > to )
1765      {
1766          // exchange them to be compatible with wxMSW
1767          gint tmp = from;
1768          from = to;
1769          to = tmp;
1770      }
1771
1772     if ( fromOut )
1773         *fromOut = from;
1774     if ( toOut )
1775         *toOut = to;
1776 }
1777
1778
1779 bool wxTextCtrl::IsEditable() const
1780 {
1781     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1782
1783 #ifdef __WXGTK20__
1784     if (m_windowStyle & wxTE_MULTILINE)
1785     {
1786         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1787     }
1788     else
1789     {
1790         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1791     }
1792 #else
1793     return GTK_EDITABLE(m_text)->editable;
1794 #endif
1795 }
1796
1797 bool wxTextCtrl::IsModified() const
1798 {
1799     return m_modified;
1800 }
1801
1802 void wxTextCtrl::Clear()
1803 {
1804     SetValue( wxEmptyString );
1805 }
1806
1807 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1808 {
1809     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1810
1811     if ((key_event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1812     {
1813         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1814         event.SetEventObject(this);
1815         event.SetString(GetValue());
1816         if (GetEventHandler()->ProcessEvent(event)) return;
1817     }
1818
1819     if ((key_event.GetKeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1820     {
1821         // This will invoke the dialog default action, such
1822         // as the clicking the default button.
1823
1824         wxWindow *top_frame = m_parent;
1825         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1826             top_frame = top_frame->GetParent();
1827
1828         if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1829         {
1830             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1831
1832             if (window->default_widget)
1833             {
1834                 gtk_widget_activate (window->default_widget);
1835                 return;
1836             }
1837         }
1838     }
1839
1840     key_event.Skip();
1841 }
1842
1843 GtkWidget* wxTextCtrl::GetConnectWidget()
1844 {
1845     return GTK_WIDGET(m_text);
1846 }
1847
1848 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1849 {
1850     if (m_windowStyle & wxTE_MULTILINE)
1851     {
1852 #ifdef __WXGTK20__
1853         return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT );  // pure guesswork
1854 #else
1855         return (window == GTK_TEXT(m_text)->text_area);
1856 #endif
1857     }
1858     else
1859     {
1860         return (window == GTK_ENTRY(m_text)->text_area);
1861     }
1862 }
1863
1864 // the font will change for subsequent text insertiongs
1865 bool wxTextCtrl::SetFont( const wxFont &font )
1866 {
1867     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1868
1869     if ( !wxTextCtrlBase::SetFont(font) )
1870     {
1871         // font didn't change, nothing to do
1872         return false;
1873     }
1874
1875     if ( m_windowStyle & wxTE_MULTILINE )
1876     {
1877         SetUpdateFont(true);
1878
1879         m_defaultStyle.SetFont(font);
1880
1881         ChangeFontGlobally();
1882     }
1883
1884     return true;
1885 }
1886
1887 void wxTextCtrl::ChangeFontGlobally()
1888 {
1889     // this method is very inefficient and hence should be called as rarely as
1890     // possible!
1891     //
1892     // TODO: it can be implemented much more efficiently for GTK2
1893 #ifndef __WXGTK20__
1894     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
1895
1896                   _T("shouldn't be called for single line controls") );
1897 #else
1898     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE),
1899                   _T("shouldn't be called for single line controls") );
1900 #endif
1901
1902     wxString value = GetValue();
1903     if ( !value.empty() )
1904     {
1905         SetUpdateFont(false);
1906
1907         Clear();
1908         AppendText(value);
1909     }
1910 }
1911
1912 #ifndef __WXGTK20__
1913
1914 void wxTextCtrl::UpdateFontIfNeeded()
1915 {
1916     if ( m_updateFont )
1917         ChangeFontGlobally();
1918 }
1919
1920 #endif // GTK+ 1.x
1921
1922 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1923 {
1924     if ( !wxControl::SetForegroundColour(colour) )
1925         return false;
1926
1927     // update default fg colour too
1928     m_defaultStyle.SetTextColour(colour);
1929
1930     return true;
1931 }
1932
1933 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1934 {
1935     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1936
1937     if ( !wxControl::SetBackgroundColour( colour ) )
1938         return false;
1939
1940 #ifndef __WXGTK20__
1941     if (!m_widget->window)
1942         return false;
1943 #endif
1944
1945     if (!m_backgroundColour.Ok())
1946         return false;
1947
1948     if (m_windowStyle & wxTE_MULTILINE)
1949     {
1950 #ifndef __WXGTK20__
1951         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1952         if (!window)
1953             return false;
1954         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1955         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1956         gdk_window_clear( window );
1957 #endif
1958     }
1959
1960     // change active background color too
1961     m_defaultStyle.SetBackgroundColour( colour );
1962
1963     return true;
1964 }
1965
1966 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1967 {
1968     if ( m_windowStyle & wxTE_MULTILINE )
1969     {
1970         if ( style.IsDefault() )
1971         {
1972             // nothing to do
1973             return true;
1974         }
1975
1976 #ifdef __WXGTK20__
1977         gint l = gtk_text_buffer_get_char_count( m_buffer );
1978
1979         wxCHECK_MSG( start >= 0 && end <= l, false,
1980                      _T("invalid range in wxTextCtrl::SetStyle") );
1981
1982         GtkTextIter starti, endi;
1983         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1984         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1985
1986         // use the attributes from style which are set in it and fall back
1987         // first to the default style and then to the text control default
1988         // colours for the others
1989         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1990
1991         wxGtkTextApplyTagsFromAttr( m_buffer, attr, &starti, &endi );
1992 #else
1993         // VERY dirty way to do that - removes the required text and re-adds it
1994         // with styling (FIXME)
1995
1996         gint l = gtk_text_get_length( GTK_TEXT(m_text) );
1997
1998         wxCHECK_MSG( start >= 0 && end <= l, false,
1999                      _T("invalid range in wxTextCtrl::SetStyle") );
2000
2001         gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
2002         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
2003         wxString tmp(text,*wxConvCurrent);
2004         g_free( text );
2005
2006         gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
2007         gtk_editable_set_position( GTK_EDITABLE(m_text), start );
2008
2009     #if wxUSE_UNICODE
2010         wxWX2MBbuf buf = tmp.mbc_str();
2011         const char *txt = buf;
2012         size_t txtlen = strlen(buf);
2013     #else
2014         const char *txt = tmp;
2015         size_t txtlen = tmp.length();
2016     #endif
2017
2018         // use the attributes from style which are set in it and fall back
2019         // first to the default style and then to the text control default
2020         // colours for the others
2021         wxGtkTextInsert(m_text,
2022                         wxTextAttr::Combine(style, m_defaultStyle, this),
2023                         txt,
2024                         txtlen);
2025
2026         /* does not seem to help under GTK+ 1.2 !!!
2027         gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
2028         SetInsertionPoint( old_pos );
2029 #endif
2030
2031         return true;
2032     }
2033
2034     // else single line
2035     // cannot do this for GTK+'s Entry widget
2036     return false;
2037 }
2038
2039 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
2040 {
2041     gtk_widget_modify_style(m_text, style);
2042 }
2043
2044 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
2045 {
2046     Cut();
2047 }
2048
2049 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
2050 {
2051     Copy();
2052 }
2053
2054 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
2055 {
2056     Paste();
2057 }
2058
2059 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
2060 {
2061     Undo();
2062 }
2063
2064 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
2065 {
2066     Redo();
2067 }
2068
2069 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2070 {
2071     event.Enable( CanCut() );
2072 }
2073
2074 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2075 {
2076     event.Enable( CanCopy() );
2077 }
2078
2079 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2080 {
2081     event.Enable( CanPaste() );
2082 }
2083
2084 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2085 {
2086     event.Enable( CanUndo() );
2087 }
2088
2089 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2090 {
2091     event.Enable( CanRedo() );
2092 }
2093
2094 void wxTextCtrl::OnInternalIdle()
2095 {
2096     wxCursor cursor = m_cursor;
2097     if (g_globalCursor.Ok()) cursor = g_globalCursor;
2098
2099     if (cursor.Ok())
2100     {
2101 #ifndef __WXGTK20__
2102         GdkWindow *window = (GdkWindow*) NULL;
2103         if (HasFlag(wxTE_MULTILINE))
2104             window = GTK_TEXT(m_text)->text_area;
2105         else
2106             window = GTK_ENTRY(m_text)->text_area;
2107
2108         if (window)
2109             gdk_window_set_cursor( window, cursor.GetCursor() );
2110
2111         if (!g_globalCursor.Ok())
2112             cursor = *wxSTANDARD_CURSOR;
2113
2114         window = m_widget->window;
2115         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
2116             gdk_window_set_cursor( window, cursor.GetCursor() );
2117 #endif
2118     }
2119
2120     if (g_delayedFocus == this)
2121     {
2122         if (GTK_WIDGET_REALIZED(m_widget))
2123         {
2124             gtk_widget_grab_focus( m_widget );
2125             g_delayedFocus = NULL;
2126         }
2127     }
2128
2129     if (wxUpdateUIEvent::CanUpdate(this))
2130         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
2131 }
2132
2133 wxSize wxTextCtrl::DoGetBestSize() const
2134 {
2135     // FIXME should be different for multi-line controls...
2136     wxSize ret( wxControl::DoGetBestSize() );
2137     wxSize best(80, ret.y);
2138     CacheBestSize(best);
2139     return best;
2140 }
2141
2142 // ----------------------------------------------------------------------------
2143 // freeze/thaw
2144 // ----------------------------------------------------------------------------
2145
2146 void wxTextCtrl::Freeze()
2147 {
2148     if ( HasFlag(wxTE_MULTILINE) )
2149     {
2150 #ifdef __WXGTK20__
2151         if ( !m_frozenness++ )
2152         {
2153             // freeze textview updates and remove buffer
2154             g_signal_connect( G_OBJECT(m_text), "expose_event",
2155                 GTK_SIGNAL_FUNC(gtk_text_exposed_callback), (gpointer)this);
2156             g_signal_connect( G_OBJECT(m_widget), "expose_event",
2157                 GTK_SIGNAL_FUNC(gtk_text_exposed_callback), (gpointer)this);
2158             gtk_widget_set_sensitive(m_widget, false);
2159             g_object_ref(m_buffer);
2160             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), gtk_text_buffer_new(NULL));
2161         }
2162 #else
2163         gtk_text_freeze(GTK_TEXT(m_text));
2164 #endif
2165     }
2166 }
2167
2168 void wxTextCtrl::Thaw()
2169 {
2170     if ( HasFlag(wxTE_MULTILINE) )
2171     {
2172 #ifdef __WXGTK20__
2173         wxASSERT_MSG( m_frozenness > 0, _T("Thaw() without matching Freeze()") );
2174
2175         if ( !--m_frozenness )
2176         {
2177             // Reattach buffer and thaw textview updates
2178             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
2179             g_object_unref(m_buffer);
2180             gtk_widget_set_sensitive(m_widget, true);
2181             g_signal_handlers_disconnect_by_func(m_widget, (gpointer)gtk_text_exposed_callback, this);
2182             g_signal_handlers_disconnect_by_func(m_text, (gpointer)gtk_text_exposed_callback, this);
2183         }
2184 #else
2185         GTK_TEXT(m_text)->vadj->value = 0.0;
2186
2187         gtk_text_thaw(GTK_TEXT(m_text));
2188 #endif
2189     }
2190 }
2191
2192 // ----------------------------------------------------------------------------
2193 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
2194 // ----------------------------------------------------------------------------
2195
2196 #ifdef __WXGTK20__
2197
2198 // FIXME: when dragging on a link the sample gets an "Unknown event".
2199 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
2200 // a buggy sample, or something else
2201 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
2202 {
2203     event.Skip();
2204     if(!(m_windowStyle & wxTE_AUTO_URL))
2205         return;
2206
2207     gint x, y;
2208     GtkTextIter start, end;
2209     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
2210                                                 "wxUrl");
2211
2212     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
2213                                           event.GetX(), event.GetY(), &x, &y);
2214
2215     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
2216     if (!gtk_text_iter_has_tag(&end, tag))
2217     {
2218         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
2219                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
2220         return;
2221     }
2222
2223     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
2224                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
2225
2226     start = end;
2227     if(!gtk_text_iter_begins_tag(&start, tag))
2228         gtk_text_iter_backward_to_tag_toggle(&start, tag);
2229     if(!gtk_text_iter_ends_tag(&end, tag))
2230         gtk_text_iter_forward_to_tag_toggle(&end, tag);
2231
2232     // Native context menu is probably not desired on an URL.
2233     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
2234     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
2235         event.Skip(false);
2236
2237     wxTextUrlEvent url_event(m_windowId, event,
2238                              gtk_text_iter_get_offset(&start),
2239                              gtk_text_iter_get_offset(&end));
2240
2241     InitCommandEvent(url_event);
2242     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
2243     //event.Skip(!GetEventHandler()->ProcessEvent(url_event));
2244     GetEventHandler()->ProcessEvent(url_event);
2245 }
2246 #endif // gtk2
2247
2248 // ----------------------------------------------------------------------------
2249 // scrolling
2250 // ----------------------------------------------------------------------------
2251
2252 GtkAdjustment *wxTextCtrl::GetVAdj() const
2253 {
2254     if ( !IsMultiLine() )
2255         return NULL;
2256
2257 #ifdef __WXGTK20__
2258     return gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(m_widget));
2259 #else
2260     return GTK_TEXT(m_text)->vadj;
2261 #endif
2262 }
2263
2264 bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
2265 {
2266     float value = adj->value + diff;
2267
2268     if ( value < 0 )
2269         value = 0;
2270
2271     float upper = adj->upper - adj->page_size;
2272     if ( value > upper )
2273         value = upper;
2274
2275     // did we noticeably change the scroll position?
2276     if ( fabs(adj->value - value) < 0.2 )
2277     {
2278         // well, this is what Robert does in wxScrollBar, so it must be good...
2279         return false;
2280     }
2281
2282     adj->value = value;
2283
2284 #ifdef __WXGTK20__
2285     gtk_adjustment_value_changed(GTK_ADJUSTMENT(adj));
2286 #else
2287     gtk_signal_emit_by_name(GTK_OBJECT(adj), "value_changed");
2288 #endif
2289
2290     return true;
2291 }
2292
2293 bool wxTextCtrl::ScrollLines(int lines)
2294 {
2295     GtkAdjustment *adj = GetVAdj();
2296     if ( !adj )
2297         return false;
2298
2299 #ifdef __WXGTK20__
2300     int diff = (int)ceil(lines*adj->step_increment);
2301 #else
2302     // this is hardcoded to 10 in GTK+ 1.2 (great idea)
2303     int diff = 10*lines;
2304 #endif
2305
2306     return DoScroll(adj, diff);
2307 }
2308
2309 bool wxTextCtrl::ScrollPages(int pages)
2310 {
2311     GtkAdjustment *adj = GetVAdj();
2312     if ( !adj )
2313         return false;
2314
2315     return DoScroll(adj, (int)ceil(pages*adj->page_increment));
2316 }
2317
2318
2319 // static
2320 wxVisualAttributes
2321 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
2322 {
2323     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
2324 }