src/gtk/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin, 2005 Mart Raudsepp
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/textctrl.h"
  14
  15 #ifndef WX_PRECOMP
  16     #include "wx/intl.h"
  17     #include "wx/log.h"
  18     #include "wx/utils.h"
  19     #include "wx/panel.h"
  20     #include "wx/settings.h"
  21     #include "wx/math.h"
  22 #endif
  23
  24 #include "wx/strconv.h"
  25 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  26
  27 #include <sys/types.h>
  28 #include <sys/stat.h>
  29 #include <ctype.h>
  30
  31 #include "wx/gtk/private.h"
  32 #include <gdk/gdkkeysyms.h>
  33
  34 // ----------------------------------------------------------------------------
  35 // helpers
  36 // ----------------------------------------------------------------------------
  37
  38 extern "C" {
  39 static void wxGtkOnRemoveTag(GtkTextBuffer *buffer,
  40                              GtkTextTag *tag,
  41                              GtkTextIter *start,
  42                              GtkTextIter *end,
  43                              char *prefix)
  44 {
  45     gchar *name;
  46     g_object_get (tag, "name", &name, NULL);
  47
  48     if (!name || strncmp(name, prefix, strlen(prefix)))
  49         // anonymous tag or not starting with prefix - don't remove
  50         g_signal_stop_emission_by_name (buffer, "remove_tag");
  51
  52     g_free(name);
  53 }
  54 }
  55
  56 extern "C" {
  57 static void wxGtkTextApplyTagsFromAttr(GtkTextBuffer *text_buffer,
  58                                        const wxTextAttr& attr,
  59                                        GtkTextIter *start,
  60                                        GtkTextIter *end)
  61 {
  62     static gchar buf[1024];
  63     GtkTextTag *tag;
  64
  65     gulong remove_handler_id = g_signal_connect (text_buffer, "remove_tag",
  66             G_CALLBACK (wxGtkOnRemoveTag), gpointer("WX"));
  67     gtk_text_buffer_remove_all_tags(text_buffer, start, end);
  68     g_signal_handler_disconnect (text_buffer, remove_handler_id);
  69
  70     if (attr.HasFont())
  71     {
  72         PangoFontDescription *font_description = attr.GetFont().GetNativeFontInfo()->description;
  73         wxGtkString font_string(pango_font_description_to_string(font_description));
  74         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string.c_str());
  75         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  76                                          buf );
  77         if (!tag)
  78             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  79                                               "font-desc", font_description,
  80                                               NULL );
  81         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  82
  83         if (attr.GetFont().GetUnderlined())
  84         {
  85             g_snprintf(buf, sizeof(buf), "WXFONTUNDERLINE");
  86             tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  87                                              buf );
  88             if (!tag)
  89                 tag = gtk_text_buffer_create_tag( text_buffer, buf,
  90                                                   "underline-set", TRUE,
  91                                                   "underline", PANGO_UNDERLINE_SINGLE,
  92                                                   NULL );
  93             gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  94         }
  95     }
  96
  97     if (attr.HasTextColour())
  98     {
  99         const GdkColor *colFg = attr.GetTextColour().GetColor();
 100         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
 101                    colFg->red, colFg->green, colFg->blue);
 102         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 103                                          buf );
 104         if (!tag)
 105             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 106                                               "foreground-gdk", colFg, NULL );
 107         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 108     }
 109
 110     if (attr.HasBackgroundColour())
 111     {
 112         const GdkColor *colBg = attr.GetBackgroundColour().GetColor();
 113         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
 114                    colBg->red, colBg->green, colBg->blue);
 115         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 116                                          buf );
 117         if (!tag)
 118             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 119                                               "background-gdk", colBg, NULL );
 120         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 121     }
 122
 123     if (attr.HasAlignment())
 124     {
 125         GtkTextIter para_start, para_end = *end;
 126         gtk_text_buffer_get_iter_at_line( text_buffer,
 127                                           &para_start,
 128                                           gtk_text_iter_get_line(start) );
 129         gtk_text_iter_forward_line(&para_end);
 130
 131         remove_handler_id = g_signal_connect (text_buffer, "remove_tag",
 132                                               G_CALLBACK(wxGtkOnRemoveTag),
 133                                               gpointer("WXALIGNMENT"));
 134         gtk_text_buffer_remove_all_tags( text_buffer, &para_start, &para_end );
 135         g_signal_handler_disconnect (text_buffer, remove_handler_id);
 136
 137         GtkJustification align;
 138         switch (attr.GetAlignment())
 139         {
 140             default:
 141                 align = GTK_JUSTIFY_LEFT;
 142                 break;
 143             case wxTEXT_ALIGNMENT_RIGHT:
 144                 align = GTK_JUSTIFY_RIGHT;
 145                 break;
 146             case wxTEXT_ALIGNMENT_CENTER:
 147                 align = GTK_JUSTIFY_CENTER;
 148                 break;
 149             // gtk+ doesn't support justify as of gtk+-2.7.4
 150         }
 151
 152         g_snprintf(buf, sizeof(buf), "WXALIGNMENT %d", align);
 153         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 154                                          buf );
 155         if (!tag)
 156             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 157                                               "justification", align, NULL );
 158         gtk_text_buffer_apply_tag( text_buffer, tag, &para_start, &para_end );
 159     }
 160 }
 161 }
 162
 163 extern "C" {
 164 static void wxGtkTextInsert(GtkWidget *text,
 165                             GtkTextBuffer *text_buffer,
 166                             const wxTextAttr& attr,
 167                             const wxCharBuffer& buffer)
 168
 169 {
 170     gint start_offset;
 171     GtkTextIter iter, start;
 172
 173     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 174                                      gtk_text_buffer_get_insert (text_buffer) );
 175     start_offset = gtk_text_iter_get_offset (&iter);
 176     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 177
 178     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 179
 180     wxGtkTextApplyTagsFromAttr(text_buffer, attr, &start, &iter);
 181 }
 182 }
 183
 184 // ----------------------------------------------------------------------------
 185 // "insert_text" for GtkEntry
 186 // ----------------------------------------------------------------------------
 187
 188 extern "C" {
 189 static void
 190 gtk_insert_text_callback(GtkEditable *editable,
 191                          const gchar *new_text,
 192                          gint new_text_length,
 193                          gint *position,
 194                          wxTextCtrl *win)
 195 {
 196     if (g_isIdle)
 197         wxapp_install_idle_handler();
 198
 199     // we should only be called if we have a max len limit at all
 200     GtkEntry *entry = GTK_ENTRY (editable);
 201
 202     wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
 203
 204     // check that we don't overflow the max length limit
 205     //
 206     // FIXME: this doesn't work when we paste a string which is going to be
 207     //        truncated
 208     if ( entry->text_length == entry->text_max_length )
 209     {
 210         // we don't need to run the base class version at all
 211         g_signal_stop_emission_by_name (editable, "insert_text");
 212
 213         // remember that the next changed signal is to be ignored to avoid
 214         // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
 215         win->IgnoreNextTextUpdate();
 216
 217         // and generate the correct one ourselves
 218         wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
 219         event.SetEventObject(win);
 220         event.SetString(win->GetValue());
 221         win->GetEventHandler()->ProcessEvent( event );
 222     }
 223 }
 224 }
 225
 226 // Implementation of wxTE_AUTO_URL for wxGTK2 by Mart Raudsepp,
 227
 228 extern "C" {
 229 static void
 230 au_apply_tag_callback(GtkTextBuffer *buffer,
 231                       GtkTextTag *tag,
 232                       GtkTextIter *start,
 233                       GtkTextIter *end,
 234                       gpointer textctrl)
 235 {
 236     if(tag == gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl"))
 237         g_signal_stop_emission_by_name (buffer, "apply_tag");
 238 }
 239 }
 240
 241 //-----------------------------------------------------------------------------
 242 //  GtkTextCharPredicates for gtk_text_iter_*_find_char
 243 //-----------------------------------------------------------------------------
 244
 245 extern "C" {
 246 static gboolean
 247 pred_whitespace (gunichar ch, gpointer user_data)
 248 {
 249     return g_unichar_isspace(ch);
 250 }
 251 }
 252
 253 extern "C" {
 254 static gboolean
 255 pred_non_whitespace (gunichar ch, gpointer user_data)
 256 {
 257     return !g_unichar_isspace(ch);
 258 }
 259 }
 260
 261 extern "C" {
 262 static gboolean
 263 pred_nonpunct (gunichar ch, gpointer user_data)
 264 {
 265     return !g_unichar_ispunct(ch);
 266 }
 267 }
 268
 269 extern "C" {
 270 static gboolean
 271 pred_nonpunct_or_slash (gunichar ch, gpointer user_data)
 272 {
 273     return !g_unichar_ispunct(ch) || ch == '/';
 274 }
 275 }
 276
 277 //-----------------------------------------------------------------------------
 278 //  Check for links between s and e and correct tags as necessary
 279 //-----------------------------------------------------------------------------
 280
 281 // This function should be made match better while being efficient at one point.
 282 // Most probably with a row of regular expressions.
 283 extern "C" {
 284 static void
 285 au_check_word( GtkTextIter *s, GtkTextIter *e )
 286 {
 287     static const char *URIPrefixes[] =
 288     {
 289         "http://",
 290         "ftp://",
 291         "www.",
 292         "ftp.",
 293         "mailto://",
 294         "https://",
 295         "file://",
 296         "nntp://",
 297         "news://",
 298         "telnet://",
 299         "mms://",
 300         "gopher://",
 301         "prospero://",
 302         "wais://",
 303     };
 304
 305     GtkTextIter start = *s, end = *e;
 306     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 307
 308     // Get our special link tag
 309     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 310
 311     // Get rid of punctuation from beginning and end.
 312     // Might want to move this to au_check_range if an improved link checking doesn't
 313     // use some intelligent punctuation checking itself (beware of undesired iter modifications).
 314     if(g_unichar_ispunct( gtk_text_iter_get_char( &start ) ) )
 315         gtk_text_iter_forward_find_char( &start, pred_nonpunct, NULL, e );
 316
 317     gtk_text_iter_backward_find_char( &end, pred_nonpunct_or_slash, NULL, &start );
 318     gtk_text_iter_forward_char(&end);
 319
 320     gchar* text = gtk_text_iter_get_text( &start, &end );
 321     size_t len = strlen(text), prefix_len;
 322     size_t n;
 323
 324     for( n = 0; n < WXSIZEOF(URIPrefixes); ++n )
 325     {
 326         prefix_len = strlen(URIPrefixes[n]);
 327         if((len > prefix_len) && !strncasecmp(text, URIPrefixes[n], prefix_len))
 328             break;
 329     }
 330
 331     if(n < WXSIZEOF(URIPrefixes))
 332     {
 333         gulong signal_id = g_signal_handler_find (buffer,
 334                                                   (GSignalMatchType) (G_SIGNAL_MATCH_FUNC),
 335                                                   0, 0, NULL,
 336                                                   (gpointer)au_apply_tag_callback, NULL);
 337
 338         g_signal_handler_block (buffer, signal_id);
 339         gtk_text_buffer_apply_tag(buffer, tag, &start, &end);
 340         g_signal_handler_unblock (buffer, signal_id);
 341     }
 342 }
 343 }
 344
 345 extern "C" {
 346 static void
 347 au_check_range(GtkTextIter *s,
 348                GtkTextIter *range_end)
 349 {
 350     GtkTextIter range_start = *s;
 351     GtkTextIter word_end;
 352     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 353     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 354
 355     gtk_text_buffer_remove_tag(buffer, tag, s, range_end);
 356
 357     if(g_unichar_isspace(gtk_text_iter_get_char(&range_start)))
 358         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 359
 360     while(!gtk_text_iter_equal(&range_start, range_end))
 361     {
 362         word_end = range_start;
 363         gtk_text_iter_forward_find_char(&word_end, pred_whitespace, NULL, range_end);
 364
 365         // Now we should have a word delimited by range_start and word_end, correct link tags
 366         au_check_word(&range_start, &word_end);
 367
 368         range_start = word_end;
 369         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 370     }
 371 }
 372 }
 373
 374 //-----------------------------------------------------------------------------
 375 //  "insert-text" for GtkTextBuffer
 376 //-----------------------------------------------------------------------------
 377
 378 extern "C" {
 379 static void
 380 au_insert_text_callback(GtkTextBuffer *buffer,
 381                         GtkTextIter *end,
 382                         gchar *text,
 383                         gint len,
 384                         wxTextCtrl *win)
 385 {
 386     if (!len || !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 387         return;
 388
 389     GtkTextIter start = *end;
 390     gtk_text_iter_backward_chars(&start, g_utf8_strlen(text, len));
 391
 392     GtkTextIter line_start = start;
 393     GtkTextIter line_end = *end;
 394     GtkTextIter words_start = start;
 395     GtkTextIter words_end = *end;
 396
 397     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(&start));
 398     gtk_text_iter_forward_to_line_end(&line_end);
 399     gtk_text_iter_backward_find_char(&words_start, pred_whitespace, NULL, &line_start);
 400     gtk_text_iter_forward_find_char(&words_end, pred_whitespace, NULL, &line_end);
 401
 402     au_check_range(&words_start, &words_end);
 403 }
 404 }
 405
 406 //-----------------------------------------------------------------------------
 407 //  "delete-range" for GtkTextBuffer
 408 //-----------------------------------------------------------------------------
 409
 410 extern "C" {
 411 static void
 412 au_delete_range_callback(GtkTextBuffer *buffer,
 413                          GtkTextIter *start,
 414                          GtkTextIter *end,
 415                          wxTextCtrl *win)
 416 {
 417     if( !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 418         return;
 419
 420     GtkTextIter line_start = *start, line_end = *end;
 421
 422     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(start));
 423     gtk_text_iter_forward_to_line_end(&line_end);
 424     gtk_text_iter_backward_find_char(start, pred_whitespace, NULL, &line_start);
 425     gtk_text_iter_forward_find_char(end, pred_whitespace, NULL, &line_end);
 426
 427     au_check_range(start, end);
 428 }
 429 }
 430
 431
 432 //-----------------------------------------------------------------------------
 433 //  "changed"
 434 //-----------------------------------------------------------------------------
 435
 436 extern "C" {
 437 static void
 438 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
 439 {
 440     if ( win->IgnoreTextUpdate() )
 441         return;
 442
 443     if (!win->m_hasVMT) return;
 444
 445     if (g_isIdle)
 446         wxapp_install_idle_handler();
 447
 448     if ( win->MarkDirtyOnChange() )
 449         win->MarkDirty();
 450
 451     win->SendTextUpdatedEvent();
 452 }
 453 }
 454
 455 //-----------------------------------------------------------------------------
 456 //  clipboard events: "copy-clipboard", "cut-clipboard", "paste-clipboard"
 457 //-----------------------------------------------------------------------------
 458
 459 // common part of the event handlers below
 460 static void
 461 handle_text_clipboard_callback( GtkWidget *widget, wxTextCtrl *win,
 462                                 wxEventType eventType, const gchar * signal_name)
 463 {
 464     wxClipboardTextEvent event( eventType, win->GetId() );
 465     event.SetEventObject( win );
 466     if ( win->GetEventHandler()->ProcessEvent( event ) )
 467     {
 468         // don't let the default processing to take place if we did something
 469         // ourselves in the event handler
 470         g_signal_stop_emission_by_name (widget, signal_name);
 471     }
 472 }
 473
 474 extern "C" {
 475 static void
 476 gtk_copy_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 477 {
 478     handle_text_clipboard_callback(
 479         widget, win, wxEVT_COMMAND_TEXT_COPY, "copy-clipboard" );
 480 }
 481
 482 static void
 483 gtk_cut_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 484 {
 485     handle_text_clipboard_callback(
 486         widget, win, wxEVT_COMMAND_TEXT_CUT, "cut-clipboard" );
 487 }
 488
 489 static void
 490 gtk_paste_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 491 {
 492     handle_text_clipboard_callback(
 493         widget, win, wxEVT_COMMAND_TEXT_PASTE, "paste-clipboard" );
 494 }
 495 }
 496
 497 //-----------------------------------------------------------------------------
 498 // "expose_event" from scrolled window and textview
 499 //-----------------------------------------------------------------------------
 500
 501 extern "C" {
 502 static gboolean
 503 gtk_text_exposed_callback( GtkWidget *widget, GdkEventExpose *event, wxTextCtrl *win )
 504 {
 505     return TRUE;
 506 }
 507 }
 508
 509
 510 //-----------------------------------------------------------------------------
 511 //  wxTextCtrl
 512 //-----------------------------------------------------------------------------
 513
 514 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 515
 516 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 517     EVT_CHAR(wxTextCtrl::OnChar)
 518
 519     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 520     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 521     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 522     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 523     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 524
 525     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 526     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 527     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 528     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 529     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 530
 531     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 532     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 533     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 534     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 535     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 536     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 537     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 538     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 539     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 540 END_EVENT_TABLE()
 541
 542 void wxTextCtrl::Init()
 543 {
 544     m_dontMarkDirty =
 545     m_modified = false;
 546
 547     m_countUpdatesToIgnore = 0;
 548
 549     SetUpdateFont(false);
 550
 551     m_text = NULL;
 552     m_frozenness = 0;
 553     m_gdkHandCursor = NULL;
 554     m_gdkXTermCursor = NULL;
 555 }
 556
 557 wxTextCtrl::~wxTextCtrl()
 558 {
 559     if(m_gdkHandCursor)
 560         gdk_cursor_unref(m_gdkHandCursor);
 561     if(m_gdkXTermCursor)
 562         gdk_cursor_unref(m_gdkXTermCursor);
 563 }
 564
 565 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 566                         wxWindowID id,
 567                         const wxString &value,
 568                         const wxPoint &pos,
 569                         const wxSize &size,
 570                         long style,
 571                         const wxValidator& validator,
 572                         const wxString &name )
 573 {
 574     Init();
 575
 576     Create( parent, id, value, pos, size, style, validator, name );
 577 }
 578
 579 bool wxTextCtrl::Create( wxWindow *parent,
 580                          wxWindowID id,
 581                          const wxString &value,
 582                          const wxPoint &pos,
 583                          const wxSize &size,
 584                          long style,
 585                          const wxValidator& validator,
 586                          const wxString &name )
 587 {
 588     m_needParent = true;
 589     m_acceptsFocus = true;
 590
 591     if (!PreCreation( parent, pos, size ) ||
 592         !CreateBase( parent, id, pos, size, style, validator, name ))
 593     {
 594         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 595         return false;
 596     }
 597
 598     bool multi_line = (style & wxTE_MULTILINE) != 0;
 599
 600     if (multi_line)
 601     {
 602         // Create view
 603         m_text = gtk_text_view_new();
 604
 605         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 606
 607         // create scrolled window
 608         m_widget = gtk_scrolled_window_new( NULL, NULL );
 609         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 610                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 611         // for ScrollLines/Pages
 612         m_scrollBar[1] = (GtkRange*)((GtkScrolledWindow*)m_widget)->vscrollbar;
 613
 614         // Insert view into scrolled window
 615         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 616
 617         // translate wx wrapping style to GTK+
 618         GtkWrapMode wrap;
 619         if ( HasFlag( wxTE_DONTWRAP ) )
 620             wrap = GTK_WRAP_NONE;
 621         else if ( HasFlag( wxTE_CHARWRAP ) )
 622             wrap = GTK_WRAP_CHAR;
 623         else if ( HasFlag( wxTE_WORDWRAP ) )
 624             wrap = GTK_WRAP_WORD;
 625         else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 626         {
 627             // GTK_WRAP_WORD_CHAR seems to be new in GTK+ 2.4
 628 #ifdef __WXGTK24__
 629             if ( !gtk_check_version(2,4,0) )
 630             {
 631                 wrap = GTK_WRAP_WORD_CHAR;
 632             }
 633             else
 634 #endif
 635             wrap = GTK_WRAP_WORD;
 636         }
 637
 638         gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 639
 640         GtkScrolledWindowSetBorder(m_widget, style);
 641
 642         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 643
 644         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 645     }
 646     else
 647     {
 648         // a single-line text control: no need for scrollbars
 649         m_widget =
 650         m_text = gtk_entry_new();
 651
 652         if (style & wxNO_BORDER)
 653             g_object_set (m_text, "has-frame", FALSE, NULL);
 654     }
 655
 656     m_parent->DoAddChild( this );
 657
 658     m_focusWidget = m_text;
 659
 660     PostCreation(size);
 661
 662     if (multi_line)
 663     {
 664         gtk_widget_show(m_text);
 665     }
 666
 667     if (!value.empty())
 668     {
 669         SetValue( value );
 670     }
 671
 672     if (style & wxTE_PASSWORD)
 673     {
 674         if (!multi_line)
 675             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 676     }
 677
 678     if (style & wxTE_READONLY)
 679     {
 680         if (!multi_line)
 681             gtk_editable_set_editable( GTK_EDITABLE(m_text), FALSE );
 682         else
 683             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 684     }
 685
 686     if (multi_line)
 687     {
 688         if (style & wxTE_RIGHT)
 689             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_RIGHT );
 690         else if (style & wxTE_CENTRE)
 691             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_CENTER );
 692         // Left justify (alignment) is the default and we don't need to apply GTK_JUSTIFY_LEFT
 693     }
 694     else
 695     {
 696 #ifdef __WXGTK24__
 697         // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 698         if (!gtk_check_version(2,4,0))
 699         {
 700             if (style & wxTE_RIGHT)
 701                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 1.0 );
 702             else if (style & wxTE_CENTRE)
 703                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 0.5 );
 704         }
 705 #endif
 706     }
 707
 708     // We want to be notified about text changes.
 709     if (multi_line)
 710     {
 711         g_signal_connect (m_buffer, "changed",
 712                           G_CALLBACK (gtk_text_changed_callback), this);
 713
 714         // .. and handle URLs on multi-line controls with wxTE_AUTO_URL style
 715         if (style & wxTE_AUTO_URL)
 716         {
 717             GtkTextIter start, end;
 718             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 719             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 720
 721             // We create our wxUrl tag here for slight efficiency gain - we
 722             // don't have to check for the tag existance in callbacks,
 723             // hereby it's guaranteed to exist.
 724             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 725                                        "foreground", "blue",
 726                                        "underline", PANGO_UNDERLINE_SINGLE,
 727                                        NULL);
 728
 729             // Check for URLs after each text change
 730             g_signal_connect_after (m_buffer, "insert_text",
 731                                     G_CALLBACK (au_insert_text_callback), this);
 732             g_signal_connect_after (m_buffer, "delete_range",
 733                                     G_CALLBACK (au_delete_range_callback), this);
 734
 735             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 736             // block this callback temporarily. This takes care of gtk+ internal
 737             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 738             // which is undesired because only a part of the URL might be copied.
 739             // The insert-text signal emitted inside it will take care of newly formed
 740             // or wholly copied URLs.
 741             g_signal_connect (m_buffer, "apply_tag",
 742                               G_CALLBACK (au_apply_tag_callback), NULL);
 743
 744             // Check for URLs in the initial string passed to Create
 745             gtk_text_buffer_get_start_iter(m_buffer, &start);
 746             gtk_text_buffer_get_end_iter(m_buffer, &end);
 747             au_check_range(&start, &end);
 748         }
 749     }
 750     else
 751     {
 752         g_signal_connect (m_text, "changed",
 753                           G_CALLBACK (gtk_text_changed_callback), this);
 754     }
 755
 756     g_signal_connect (m_text, "copy-clipboard",
 757                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 758     g_signal_connect (m_text, "cut-clipboard",
 759                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 760     g_signal_connect (m_text, "paste-clipboard",
 761                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 762
 763     m_cursor = wxCursor( wxCURSOR_IBEAM );
 764
 765     wxTextAttr attrDef(GetForegroundColour(), GetBackgroundColour(), GetFont());
 766     SetDefaultStyle( attrDef );
 767
 768     return true;
 769 }
 770
 771
 772 void wxTextCtrl::CalculateScrollbar()
 773 {
 774 }
 775
 776 wxString wxTextCtrl::GetValue() const
 777 {
 778     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 779
 780     wxString tmp;
 781     if ( IsMultiLine() )
 782     {
 783         GtkTextIter start;
 784         gtk_text_buffer_get_start_iter( m_buffer, &start );
 785         GtkTextIter end;
 786         gtk_text_buffer_get_end_iter( m_buffer, &end );
 787         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 788
 789         const wxWxCharBuffer buf = wxGTK_CONV_BACK(text);
 790         if ( buf )
 791             tmp = buf;
 792     }
 793     else
 794     {
 795         const gchar *text = gtk_entry_get_text( GTK_ENTRY(m_text) );
 796         const wxWxCharBuffer buf = wxGTK_CONV_BACK( text );
 797         if ( buf )
 798             tmp = buf;
 799     }
 800
 801     return tmp;
 802 }
 803
 804 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 805 {
 806     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 807     // encoding?
 808
 809     // first check the default text style (we intentionally don't check the
 810     // style for the current position as it doesn't make sense for SetValue())
 811     const wxTextAttr& style = GetDefaultStyle();
 812     wxFontEncoding enc = style.HasFont() ? style.GetFont().GetEncoding()
 813                                          : wxFONTENCODING_SYSTEM;
 814
 815     // fall back to the controls font if no style
 816     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 817         enc = GetFont().GetEncoding();
 818
 819     return enc;
 820 }
 821
 822 bool wxTextCtrl::IsEmpty() const
 823 {
 824     if ( IsMultiLine() )
 825         return gtk_text_buffer_get_char_count(m_buffer) != 0;
 826
 827     return wxTextCtrlBase::IsEmpty();
 828 }
 829
 830 void wxTextCtrl::DoSetValue( const wxString &value, int flags )
 831 {
 832     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 833
 834     // the control won't be modified any more as we programmatically replace
 835     // all the existing text, so reset the flag and don't set it again (and do
 836     // it now, before the text event handler is ran so that IsModified() called
 837     // from there returns the expected value)
 838     m_modified = false;
 839     DontMarkDirtyOnNextChange();
 840
 841     const wxCharBuffer buffer(wxGTK_CONV_ENC(value, GetTextEncoding()));
 842     if ( !buffer )
 843     {
 844         // see comment in WriteText() as to why we must warn the user about
 845         // this
 846         wxLogWarning(_("Failed to set text in the text control."));
 847         return;
 848     }
 849
 850     // if the control is not empty, two "changed" signals are emitted,
 851     // otherwise only one and we need to ignore either both or one of them
 852     int ignore = flags & SetValue_SendEvent ? 0 : 1;
 853     if ( !IsEmpty() )
 854         ignore++;
 855
 856     if ( ignore )
 857         IgnoreNextTextUpdate(ignore);
 858
 859     if ( IsMultiLine() )
 860     {
 861         gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 862     }
 863     else // single line
 864     {
 865         gtk_entry_set_text( GTK_ENTRY(m_text), buffer );
 866     }
 867
 868     // GRG, Jun/2000: Changed this after a lot of discussion in
 869     //   the lists. wxWidgets 2.2 will have a set of flags to
 870     //   customize this behaviour.
 871     SetInsertionPoint(0);
 872 }
 873
 874 void wxTextCtrl::WriteText( const wxString &text )
 875 {
 876     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 877
 878     if ( text.empty() )
 879         return;
 880
 881     // check if we have a specific style for the current position
 882     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
 883     wxTextAttr style;
 884     if ( GetStyle(GetInsertionPoint(), style) && style.HasFont() )
 885     {
 886         enc = style.GetFont().GetEncoding();
 887     }
 888
 889     if ( enc == wxFONTENCODING_SYSTEM )
 890         enc = GetTextEncoding();
 891
 892     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
 893     if ( !buffer )
 894     {
 895         // we must log an error here as losing the text like this can be a
 896         // serious problem (e.g. imagine the document edited by user being
 897         // empty instead of containing the correct text)
 898         wxLogWarning(_("Failed to insert text in the control."));
 899         return;
 900     }
 901
 902     // we're changing the text programmatically
 903     DontMarkDirtyOnNextChange();
 904
 905     if ( IsMultiLine() )
 906     {
 907         // First remove the selection if there is one
 908         // TODO:  Is there an easier GTK specific way to do this?
 909         long from, to;
 910         GetSelection(&from, &to);
 911         if (from != to)
 912             Remove(from, to);
 913
 914         // Insert the text
 915         wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
 916
 917         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
 918         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
 919         if ( wxIsSameDouble(adj->value, adj->upper - adj->page_size) )
 920         {
 921             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
 922                     gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
 923         }
 924     }
 925     else // single line
 926     {
 927         // First remove the selection if there is one
 928         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 929
 930         // This moves the cursor pos to behind the inserted text.
 931         gint len = gtk_editable_get_position(GTK_EDITABLE(m_text));
 932
 933         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 934
 935         // Bring entry's cursor uptodate.
 936         gtk_editable_set_position( GTK_EDITABLE(m_text), len );
 937     }
 938 }
 939
 940 void wxTextCtrl::AppendText( const wxString &text )
 941 {
 942     SetInsertionPointEnd();
 943     WriteText( text );
 944 }
 945
 946 wxString wxTextCtrl::GetLineText( long lineNo ) const
 947 {
 948     wxString result;
 949     if ( IsMultiLine() )
 950     {
 951         GtkTextIter line;
 952         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
 953         GtkTextIter end = line;
 954         gtk_text_iter_forward_to_line_end(&end);
 955         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
 956         result = wxGTK_CONV_BACK(text);
 957     }
 958     else
 959     {
 960         if (lineNo == 0)
 961             result = GetValue();
 962     }
 963     return result;
 964 }
 965
 966 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 967 {
 968   /* If you implement this, don't forget to update the documentation!
 969    * (file docs/latex/wx/text.tex) */
 970     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 971 }
 972
 973 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 974 {
 975     if ( IsMultiLine() )
 976     {
 977         GtkTextIter iter;
 978
 979         if (pos > GetLastPosition())
 980             return false;
 981
 982         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
 983
 984         if ( y )
 985             *y = gtk_text_iter_get_line(&iter);
 986         if ( x )
 987             *x = gtk_text_iter_get_line_offset(&iter);
 988     }
 989     else // single line control
 990     {
 991         if ( pos <= GTK_ENTRY(m_text)->text_length )
 992         {
 993             if ( y )
 994                 *y = 0;
 995             if ( x )
 996                 *x = pos;
 997         }
 998         else
 999         {
1000             // index out of bounds
1001             return false;
1002         }
1003     }
1004
1005     return true;
1006 }
1007
1008 long wxTextCtrl::XYToPosition(long x, long y ) const
1009 {
1010     if ( IsSingleLine() )
1011         return 0;
1012
1013     GtkTextIter iter;
1014     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1015         return -1;
1016
1017     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1018     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1019         return -1;
1020
1021     return gtk_text_iter_get_offset(&iter) + x;
1022 }
1023
1024 int wxTextCtrl::GetLineLength(long lineNo) const
1025 {
1026     if ( IsMultiLine() )
1027     {
1028         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1029         if (lineNo > last_line)
1030             return -1;
1031
1032         GtkTextIter iter;
1033         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1034         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1035         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1036     }
1037     else
1038     {
1039         wxString str = GetLineText (lineNo);
1040         return (int) str.length();
1041     }
1042 }
1043
1044 int wxTextCtrl::GetNumberOfLines() const
1045 {
1046     if ( IsMultiLine() )
1047     {
1048         GtkTextIter iter;
1049         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, 0 );
1050
1051         // move forward by one display line until the end is reached
1052         int lineCount = 1;
1053         while ( gtk_text_view_forward_display_line(GTK_TEXT_VIEW(m_text), &iter) )
1054         {
1055             lineCount++;
1056         }
1057
1058         // If the last character in the text buffer is a newline,
1059         // gtk_text_view_forward_display_line() will return false without that
1060         // line being counted. Must add one manually in that case.
1061         GtkTextIter lastCharIter;
1062         gtk_text_buffer_get_iter_at_offset
1063         (
1064             m_buffer,
1065             &lastCharIter,
1066             gtk_text_buffer_get_char_count(m_buffer) - 1
1067         );
1068         gchar lastChar = gtk_text_iter_get_char( &lastCharIter );
1069         if ( lastChar == wxT('\n') )
1070             lineCount++;
1071
1072         return lineCount;
1073     }
1074     else // single line
1075     {
1076         return 1;
1077     }
1078 }
1079
1080 void wxTextCtrl::SetInsertionPoint( long pos )
1081 {
1082     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1083
1084     if ( IsMultiLine() )
1085     {
1086         GtkTextIter iter;
1087         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1088         gtk_text_buffer_place_cursor( m_buffer, &iter );
1089         gtk_text_view_scroll_mark_onscreen
1090         (
1091             GTK_TEXT_VIEW(m_text),
1092             gtk_text_buffer_get_insert( m_buffer )
1093         );
1094     }
1095     else
1096     {
1097         // FIXME: Is the editable's cursor really uptodate without double set_position in GTK2?
1098         gtk_editable_set_position(GTK_EDITABLE(m_text), int(pos));
1099     }
1100 }
1101
1102 void wxTextCtrl::SetInsertionPointEnd()
1103 {
1104     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1105
1106     if ( IsMultiLine() )
1107     {
1108         GtkTextIter end;
1109         gtk_text_buffer_get_end_iter( m_buffer, &end );
1110         gtk_text_buffer_place_cursor( m_buffer, &end );
1111     }
1112     else
1113     {
1114         gtk_editable_set_position( GTK_EDITABLE(m_text), -1 );
1115     }
1116 }
1117
1118 void wxTextCtrl::SetEditable( bool editable )
1119 {
1120     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1121
1122     if ( IsMultiLine() )
1123     {
1124         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1125     }
1126     else
1127     {
1128         gtk_editable_set_editable( GTK_EDITABLE(m_text), editable );
1129     }
1130 }
1131
1132 bool wxTextCtrl::Enable( bool enable )
1133 {
1134     if (!wxWindowBase::Enable(enable))
1135     {
1136         // nothing to do
1137         return false;
1138     }
1139
1140     if ( IsMultiLine() )
1141     {
1142         SetEditable( enable );
1143     }
1144     else
1145     {
1146         gtk_widget_set_sensitive( m_text, enable );
1147     }
1148
1149     return true;
1150 }
1151
1152 // wxGTK-specific: called recursively by Enable,
1153 // to give widgets an oppprtunity to correct their colours after they
1154 // have been changed by Enable
1155 void wxTextCtrl::OnParentEnable( bool enable )
1156 {
1157     // If we have a custom background colour, we use this colour in both
1158     // disabled and enabled mode, or we end up with a different colour under the
1159     // text.
1160     wxColour oldColour = GetBackgroundColour();
1161     if (oldColour.Ok())
1162     {
1163         // Need to set twice or it'll optimize the useful stuff out
1164         if (oldColour == * wxWHITE)
1165             SetBackgroundColour(*wxBLACK);
1166         else
1167             SetBackgroundColour(*wxWHITE);
1168         SetBackgroundColour(oldColour);
1169     }
1170 }
1171
1172 void wxTextCtrl::MarkDirty()
1173 {
1174     m_modified = true;
1175 }
1176
1177 void wxTextCtrl::DiscardEdits()
1178 {
1179     m_modified = false;
1180 }
1181
1182 // ----------------------------------------------------------------------------
1183 // max text length support
1184 // ----------------------------------------------------------------------------
1185
1186 bool wxTextCtrl::IgnoreTextUpdate()
1187 {
1188     if ( m_countUpdatesToIgnore > 0 )
1189     {
1190         m_countUpdatesToIgnore--;
1191
1192         return true;
1193     }
1194
1195     return false;
1196 }
1197
1198 bool wxTextCtrl::MarkDirtyOnChange()
1199 {
1200     if ( m_dontMarkDirty )
1201     {
1202         m_dontMarkDirty = false;
1203
1204         return false;
1205     }
1206
1207     return true;
1208 }
1209
1210 void wxTextCtrl::SetMaxLength(unsigned long len)
1211 {
1212     if ( !HasFlag(wxTE_MULTILINE) )
1213     {
1214         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
1215
1216         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
1217         // we had tried to enter more text than allowed by max text length and
1218         // the text wasn't really changed
1219         //
1220         // to detect this and generate TEXT_MAXLEN event instead of
1221         // TEXT_CHANGED one in this case we also catch "insert_text" signal
1222         //
1223         // when max len is set to 0 we disconnect our handler as it means that
1224         // we shouldn't check anything any more
1225         if ( len )
1226         {
1227             g_signal_connect (m_text, "insert_text",
1228                               G_CALLBACK (gtk_insert_text_callback), this);
1229         }
1230         else // no checking
1231         {
1232             g_signal_handlers_disconnect_by_func (m_text,
1233                     (gpointer) gtk_insert_text_callback, this);
1234         }
1235     }
1236 }
1237
1238 void wxTextCtrl::SetSelection( long from, long to )
1239 {
1240     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1241
1242     if (from == -1 && to == -1)
1243     {
1244         from = 0;
1245         to = GetValue().length();
1246     }
1247
1248     if ( IsMultiLine() )
1249     {
1250         GtkTextIter fromi, toi;
1251         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1252         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1253
1254         gtk_text_buffer_place_cursor( m_buffer, &toi );
1255         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1256     }
1257     else
1258     {
1259         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1260     }
1261 }
1262
1263 void wxTextCtrl::ShowPosition( long pos )
1264 {
1265     if ( IsMultiLine() )
1266     {
1267         GtkTextIter iter;
1268         gtk_text_buffer_get_start_iter( m_buffer, &iter );
1269         gtk_text_iter_set_offset( &iter, pos );
1270         GtkTextMark *mark = gtk_text_buffer_create_mark( m_buffer, NULL, &iter, TRUE );
1271         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1272     }
1273 }
1274
1275 wxTextCtrlHitTestResult
1276 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1277 {
1278     if ( !IsMultiLine() )
1279     {
1280         // not supported
1281         return wxTE_HT_UNKNOWN;
1282     }
1283
1284     int x, y;
1285     gtk_text_view_window_to_buffer_coords
1286     (
1287         GTK_TEXT_VIEW(m_text),
1288         GTK_TEXT_WINDOW_TEXT,
1289         pt.x, pt.y,
1290         &x, &y
1291     );
1292
1293     GtkTextIter iter;
1294     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1295     if ( pos )
1296         *pos = gtk_text_iter_get_offset(&iter);
1297
1298     return wxTE_HT_ON_TEXT;
1299 }
1300
1301 long wxTextCtrl::GetInsertionPoint() const
1302 {
1303     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1304
1305     if ( IsMultiLine() )
1306     {
1307         // There is no direct accessor for the cursor, but
1308         // internally, the cursor is the "mark" called
1309         // "insert" in the text view's btree structure.
1310
1311         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1312         GtkTextIter cursor;
1313         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1314
1315         return gtk_text_iter_get_offset( &cursor );
1316     }
1317     else
1318     {
1319         return (long) gtk_editable_get_position(GTK_EDITABLE(m_text));
1320     }
1321 }
1322
1323 wxTextPos wxTextCtrl::GetLastPosition() const
1324 {
1325     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1326
1327     int pos = 0;
1328
1329     if ( IsMultiLine() )
1330     {
1331         GtkTextIter end;
1332         gtk_text_buffer_get_end_iter( m_buffer, &end );
1333
1334         pos = gtk_text_iter_get_offset( &end );
1335     }
1336     else
1337     {
1338         pos = GTK_ENTRY(m_text)->text_length;
1339     }
1340
1341     return (long)pos;
1342 }
1343
1344 void wxTextCtrl::Remove( long from, long to )
1345 {
1346     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1347
1348     if ( IsMultiLine() )
1349     {
1350         GtkTextIter fromi, toi;
1351         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1352         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1353
1354         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1355     }
1356     else // single line
1357         gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1358 }
1359
1360 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1361 {
1362     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1363
1364     Remove( from, to );
1365
1366     if (!value.empty())
1367     {
1368         SetInsertionPoint( from );
1369         WriteText( value );
1370     }
1371 }
1372
1373 void wxTextCtrl::Cut()
1374 {
1375     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1376
1377     if ( IsMultiLine() )
1378         g_signal_emit_by_name (m_text, "cut-clipboard");
1379     else
1380         gtk_editable_cut_clipboard(GTK_EDITABLE(m_text));
1381 }
1382
1383 void wxTextCtrl::Copy()
1384 {
1385     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1386
1387     if ( IsMultiLine() )
1388         g_signal_emit_by_name (m_text, "copy-clipboard");
1389     else
1390         gtk_editable_copy_clipboard(GTK_EDITABLE(m_text));
1391 }
1392
1393 void wxTextCtrl::Paste()
1394 {
1395     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1396
1397     if ( IsMultiLine() )
1398         g_signal_emit_by_name (m_text, "paste-clipboard");
1399     else
1400         gtk_editable_paste_clipboard(GTK_EDITABLE(m_text));
1401 }
1402
1403 // Undo/redo
1404 void wxTextCtrl::Undo()
1405 {
1406     // TODO
1407     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1408 }
1409
1410 void wxTextCtrl::Redo()
1411 {
1412     // TODO
1413     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1414 }
1415
1416 bool wxTextCtrl::CanUndo() const
1417 {
1418     // TODO
1419     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1420     return false;
1421 }
1422
1423 bool wxTextCtrl::CanRedo() const
1424 {
1425     // TODO
1426     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1427     return false;
1428 }
1429
1430 // If the return values from and to are the same, there is no
1431 // selection.
1432 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1433 {
1434     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1435
1436     gint from = -1;
1437     gint to = -1;
1438     bool haveSelection = false;
1439
1440      if ( IsMultiLine() )
1441      {
1442          GtkTextIter ifrom, ito;
1443          if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1444          {
1445              haveSelection = true;
1446              from = gtk_text_iter_get_offset(&ifrom);
1447              to = gtk_text_iter_get_offset(&ito);
1448          }
1449      }
1450      else  // not multi-line
1451      {
1452          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1453                                                  &from, &to) )
1454          {
1455              haveSelection = true;
1456          }
1457      }
1458
1459      if (! haveSelection )
1460           from = to = GetInsertionPoint();
1461
1462      if ( from > to )
1463      {
1464          // exchange them to be compatible with wxMSW
1465          gint tmp = from;
1466          from = to;
1467          to = tmp;
1468      }
1469
1470     if ( fromOut )
1471         *fromOut = from;
1472     if ( toOut )
1473         *toOut = to;
1474 }
1475
1476
1477 bool wxTextCtrl::IsEditable() const
1478 {
1479     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1480
1481     if ( IsMultiLine() )
1482     {
1483         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1484     }
1485     else
1486     {
1487         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1488     }
1489 }
1490
1491 bool wxTextCtrl::IsModified() const
1492 {
1493     return m_modified;
1494 }
1495
1496 void wxTextCtrl::Clear()
1497 {
1498     SetValue( wxEmptyString );
1499 }
1500
1501 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1502 {
1503     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1504
1505     if ( key_event.GetKeyCode() == WXK_RETURN )
1506     {
1507         if ( HasFlag(wxTE_PROCESS_ENTER) )
1508         {
1509             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1510             event.SetEventObject(this);
1511             event.SetString(GetValue());
1512             if ( GetEventHandler()->ProcessEvent(event) )
1513                 return;
1514         }
1515
1516         // FIXME: this is not the right place to do it, wxDialog::OnCharHook()
1517         //        probably is
1518         if ( IsSingleLine() )
1519         {
1520             // This will invoke the dialog default action, such
1521             // as the clicking the default button.
1522
1523             wxWindow *top_frame = m_parent;
1524             while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1525                 top_frame = top_frame->GetParent();
1526
1527             if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1528             {
1529                 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1530
1531                 if (window->default_widget)
1532                 {
1533                     gtk_widget_activate (window->default_widget);
1534                     return;
1535                 }
1536             }
1537         }
1538     }
1539
1540     key_event.Skip();
1541 }
1542
1543 GtkWidget* wxTextCtrl::GetConnectWidget()
1544 {
1545     return GTK_WIDGET(m_text);
1546 }
1547
1548 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1549 {
1550     if ( IsMultiLine() )
1551     {
1552         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1553                                         GTK_TEXT_WINDOW_TEXT );
1554     }
1555     else
1556     {
1557         return GTK_ENTRY(m_text)->text_area;
1558     }
1559 }
1560
1561 // the font will change for subsequent text insertiongs
1562 bool wxTextCtrl::SetFont( const wxFont &font )
1563 {
1564     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1565
1566     if ( !wxTextCtrlBase::SetFont(font) )
1567     {
1568         // font didn't change, nothing to do
1569         return false;
1570     }
1571
1572     if ( IsMultiLine() )
1573     {
1574         SetUpdateFont(true);
1575
1576         m_defaultStyle.SetFont(font);
1577
1578         ChangeFontGlobally();
1579     }
1580
1581     return true;
1582 }
1583
1584 void wxTextCtrl::ChangeFontGlobally()
1585 {
1586     // this method is very inefficient and hence should be called as rarely as
1587     // possible!
1588     //
1589     // TODO: it can be implemented much more efficiently for GTK2
1590     wxASSERT_MSG( IsMultiLine(),
1591                   _T("shouldn't be called for single line controls") );
1592
1593     wxString value = GetValue();
1594     if ( !value.empty() )
1595     {
1596         SetUpdateFont(false);
1597
1598         Clear();
1599         AppendText(value);
1600     }
1601 }
1602
1603 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1604 {
1605     if ( !wxControl::SetForegroundColour(colour) )
1606         return false;
1607
1608     // update default fg colour too
1609     m_defaultStyle.SetTextColour(colour);
1610
1611     return true;
1612 }
1613
1614 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1615 {
1616     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1617
1618     if ( !wxControl::SetBackgroundColour( colour ) )
1619         return false;
1620
1621     if (!m_backgroundColour.Ok())
1622         return false;
1623
1624     // change active background color too
1625     m_defaultStyle.SetBackgroundColour( colour );
1626
1627     return true;
1628 }
1629
1630 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1631 {
1632     if ( IsMultiLine() )
1633     {
1634         if ( style.IsDefault() )
1635         {
1636             // nothing to do
1637             return true;
1638         }
1639
1640         gint l = gtk_text_buffer_get_char_count( m_buffer );
1641
1642         wxCHECK_MSG( start >= 0 && end <= l, false,
1643                      _T("invalid range in wxTextCtrl::SetStyle") );
1644
1645         GtkTextIter starti, endi;
1646         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1647         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1648
1649         // use the attributes from style which are set in it and fall back
1650         // first to the default style and then to the text control default
1651         // colours for the others
1652         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1653
1654         wxGtkTextApplyTagsFromAttr( m_buffer, attr, &starti, &endi );
1655
1656         return true;
1657     }
1658
1659     // else single line
1660     // cannot do this for GTK+'s Entry widget
1661     return false;
1662 }
1663
1664 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1665 {
1666     gtk_widget_modify_style(m_text, style);
1667 }
1668
1669 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1670 {
1671     Cut();
1672 }
1673
1674 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1675 {
1676     Copy();
1677 }
1678
1679 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1680 {
1681     Paste();
1682 }
1683
1684 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1685 {
1686     Undo();
1687 }
1688
1689 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1690 {
1691     Redo();
1692 }
1693
1694 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1695 {
1696     event.Enable( CanCut() );
1697 }
1698
1699 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1700 {
1701     event.Enable( CanCopy() );
1702 }
1703
1704 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1705 {
1706     event.Enable( CanPaste() );
1707 }
1708
1709 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1710 {
1711     event.Enable( CanUndo() );
1712 }
1713
1714 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1715 {
1716     event.Enable( CanRedo() );
1717 }
1718
1719 wxSize wxTextCtrl::DoGetBestSize() const
1720 {
1721     // FIXME should be different for multi-line controls...
1722     wxSize ret( wxControl::DoGetBestSize() );
1723     wxSize best(80, ret.y);
1724     CacheBestSize(best);
1725     return best;
1726 }
1727
1728 // ----------------------------------------------------------------------------
1729 // freeze/thaw
1730 // ----------------------------------------------------------------------------
1731
1732 void wxTextCtrl::Freeze()
1733 {
1734     if ( HasFlag(wxTE_MULTILINE) )
1735     {
1736         if ( !m_frozenness++ )
1737         {
1738             // freeze textview updates and remove buffer
1739             g_signal_connect (m_text, "expose_event",
1740                               G_CALLBACK (gtk_text_exposed_callback), this);
1741             g_signal_connect (m_widget, "expose_event",
1742                               G_CALLBACK (gtk_text_exposed_callback), this);
1743             gtk_widget_set_sensitive(m_widget, false);
1744             g_object_ref(m_buffer);
1745             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), gtk_text_buffer_new(NULL));
1746         }
1747     }
1748 }
1749
1750 void wxTextCtrl::Thaw()
1751 {
1752     if ( HasFlag(wxTE_MULTILINE) )
1753     {
1754         wxASSERT_MSG( m_frozenness > 0, _T("Thaw() without matching Freeze()") );
1755
1756         if ( !--m_frozenness )
1757         {
1758             // Reattach buffer and thaw textview updates
1759             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1760             g_object_unref(m_buffer);
1761             gtk_widget_set_sensitive(m_widget, true);
1762             g_signal_handlers_disconnect_by_func (m_widget,
1763                     (gpointer) gtk_text_exposed_callback, this);
1764             g_signal_handlers_disconnect_by_func (m_text,
1765                     (gpointer) gtk_text_exposed_callback, this);
1766         }
1767     }
1768 }
1769
1770 // ----------------------------------------------------------------------------
1771 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1772 // ----------------------------------------------------------------------------
1773
1774 // FIXME: when dragging on a link the sample gets an "Unknown event".
1775 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1776 // a buggy sample, or something else
1777 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1778 {
1779     event.Skip();
1780     if( !HasFlag(wxTE_AUTO_URL) )
1781         return;
1782
1783     gint x, y;
1784     GtkTextIter start, end;
1785     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1786                                                 "wxUrl");
1787
1788     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1789                                           event.GetX(), event.GetY(), &x, &y);
1790
1791     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1792     if (!gtk_text_iter_has_tag(&end, tag))
1793     {
1794         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1795                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1796         return;
1797     }
1798
1799     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1800                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1801
1802     start = end;
1803     if(!gtk_text_iter_begins_tag(&start, tag))
1804         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1805     if(!gtk_text_iter_ends_tag(&end, tag))
1806         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1807
1808     // Native context menu is probably not desired on an URL.
1809     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1810     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1811         event.Skip(false);
1812
1813     wxTextUrlEvent url_event(m_windowId, event,
1814                              gtk_text_iter_get_offset(&start),
1815                              gtk_text_iter_get_offset(&end));
1816
1817     InitCommandEvent(url_event);
1818     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1819     //event.Skip(!GetEventHandler()->ProcessEvent(url_event));
1820     GetEventHandler()->ProcessEvent(url_event);
1821 }
1822
1823 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
1824 {
1825     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
1826
1827     // GtkTextView starts a drag operation when left mouse button is pressed
1828     // and ends it when it is released and if it doesn't get the release event
1829     // the next click on a control results in an assertion failure inside
1830     // gtk_text_view_start_selection_drag() which simply *kills* the program
1831     // without anything we can do about it, so always let GTK+ have this event
1832     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
1833 }
1834
1835 // static
1836 wxVisualAttributes
1837 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1838 {
1839     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1840 }