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