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