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