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     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
 452     event.SetEventObject( win );
 453     win->GetEventHandler()->ProcessEvent( event );
 454 }
 455 }
 456
 457 //-----------------------------------------------------------------------------
 458 //  clipboard events: "copy-clipboard", "cut-clipboard", "paste-clipboard"
 459 //-----------------------------------------------------------------------------
 460
 461 // common part of the event handlers below
 462 static void
 463 handle_text_clipboard_callback( GtkWidget *widget, wxTextCtrl *win,
 464                                 wxEventType eventType, const gchar * signal_name)
 465 {
 466     wxClipboardTextEvent event( eventType, win->GetId() );
 467     event.SetEventObject( win );
 468     if ( win->GetEventHandler()->ProcessEvent( event ) )
 469     {
 470         // don't let the default processing to take place if we did something
 471         // ourselves in the event handler
 472         g_signal_stop_emission_by_name (widget, signal_name);
 473     }
 474 }
 475
 476 extern "C" {
 477 static void
 478 gtk_copy_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 479 {
 480     handle_text_clipboard_callback(
 481         widget, win, wxEVT_COMMAND_TEXT_COPY, "copy-clipboard" );
 482 }
 483
 484 static void
 485 gtk_cut_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 486 {
 487     handle_text_clipboard_callback(
 488         widget, win, wxEVT_COMMAND_TEXT_CUT, "cut-clipboard" );
 489 }
 490
 491 static void
 492 gtk_paste_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 493 {
 494     handle_text_clipboard_callback(
 495         widget, win, wxEVT_COMMAND_TEXT_PASTE, "paste-clipboard" );
 496 }
 497 }
 498
 499 //-----------------------------------------------------------------------------
 500 // "expose_event" from scrolled window and textview
 501 //-----------------------------------------------------------------------------
 502
 503 extern "C" {
 504 static gboolean
 505 gtk_text_exposed_callback( GtkWidget *widget, GdkEventExpose *event, wxTextCtrl *win )
 506 {
 507     return TRUE;
 508 }
 509 }
 510
 511
 512 //-----------------------------------------------------------------------------
 513 //  wxTextCtrl
 514 //-----------------------------------------------------------------------------
 515
 516 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 517
 518 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 519     EVT_CHAR(wxTextCtrl::OnChar)
 520
 521     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 522     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 523     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 524     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 525     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 526
 527     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 528     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 529     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 530     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 531     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 532
 533     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 534     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 535     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 536     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 537     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 538     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 539     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 540     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 541     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 542 END_EVENT_TABLE()
 543
 544 void wxTextCtrl::Init()
 545 {
 546     m_dontMarkDirty =
 547     m_ignoreNextUpdate =
 548     m_modified = false;
 549
 550     SetUpdateFont(false);
 551
 552     m_text = NULL;
 553     m_frozenness = 0;
 554     m_gdkHandCursor = NULL;
 555     m_gdkXTermCursor = NULL;
 556 }
 557
 558 wxTextCtrl::~wxTextCtrl()
 559 {
 560     if(m_gdkHandCursor)
 561         gdk_cursor_unref(m_gdkHandCursor);
 562     if(m_gdkXTermCursor)
 563         gdk_cursor_unref(m_gdkXTermCursor);
 564 }
 565
 566 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 567                         wxWindowID id,
 568                         const wxString &value,
 569                         const wxPoint &pos,
 570                         const wxSize &size,
 571                         long style,
 572                         const wxValidator& validator,
 573                         const wxString &name )
 574 {
 575     Init();
 576
 577     Create( parent, id, value, pos, size, style, validator, name );
 578 }
 579
 580 bool wxTextCtrl::Create( wxWindow *parent,
 581                          wxWindowID id,
 582                          const wxString &value,
 583                          const wxPoint &pos,
 584                          const wxSize &size,
 585                          long style,
 586                          const wxValidator& validator,
 587                          const wxString &name )
 588 {
 589     m_needParent = true;
 590     m_acceptsFocus = true;
 591
 592     if (!PreCreation( parent, pos, size ) ||
 593         !CreateBase( parent, id, pos, size, style, validator, name ))
 594     {
 595         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 596         return false;
 597     }
 598
 599     bool multi_line = (style & wxTE_MULTILINE) != 0;
 600
 601     if (multi_line)
 602     {
 603         // Create view
 604         m_text = gtk_text_view_new();
 605
 606         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 607
 608         // create scrolled window
 609         m_widget = gtk_scrolled_window_new( NULL, NULL );
 610         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 611                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 612         // for ScrollLines/Pages
 613         m_scrollBar[1] = (GtkRange*)((GtkScrolledWindow*)m_widget)->vscrollbar;
 614
 615         // Insert view into scrolled window
 616         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 617
 618         // translate wx wrapping style to GTK+
 619         GtkWrapMode wrap;
 620         if ( HasFlag( wxTE_DONTWRAP ) )
 621             wrap = GTK_WRAP_NONE;
 622         else if ( HasFlag( wxTE_CHARWRAP ) )
 623             wrap = GTK_WRAP_CHAR;
 624         else if ( HasFlag( wxTE_WORDWRAP ) )
 625             wrap = GTK_WRAP_WORD;
 626         else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 627         {
 628             // GTK_WRAP_WORD_CHAR seems to be new in GTK+ 2.4
 629 #ifdef __WXGTK24__
 630             if ( !gtk_check_version(2,4,0) )
 631             {
 632                 wrap = GTK_WRAP_WORD_CHAR;
 633             }
 634             else
 635 #endif
 636             wrap = GTK_WRAP_WORD;
 637         }
 638
 639         gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 640
 641         GtkScrolledWindowSetBorder(m_widget, style);
 642
 643         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 644
 645         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 646     }
 647     else
 648     {
 649         // a single-line text control: no need for scrollbars
 650         m_widget =
 651         m_text = gtk_entry_new();
 652
 653         if (style & wxNO_BORDER)
 654             g_object_set (m_text, "has-frame", FALSE, NULL);
 655     }
 656
 657     m_parent->DoAddChild( this );
 658
 659     m_focusWidget = m_text;
 660
 661     PostCreation(size);
 662
 663     if (multi_line)
 664     {
 665         gtk_widget_show(m_text);
 666     }
 667
 668     if (!value.empty())
 669     {
 670         SetValue( value );
 671     }
 672
 673     if (style & wxTE_PASSWORD)
 674     {
 675         if (!multi_line)
 676             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 677     }
 678
 679     if (style & wxTE_READONLY)
 680     {
 681         if (!multi_line)
 682             gtk_editable_set_editable( GTK_EDITABLE(m_text), FALSE );
 683         else
 684             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 685     }
 686
 687     if (multi_line)
 688     {
 689         if (style & wxTE_RIGHT)
 690             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_RIGHT );
 691         else if (style & wxTE_CENTRE)
 692             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_CENTER );
 693         // Left justify (alignment) is the default and we don't need to apply GTK_JUSTIFY_LEFT
 694     }
 695     else
 696     {
 697 #ifdef __WXGTK24__
 698         // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 699         if (!gtk_check_version(2,4,0))
 700         {
 701             if (style & wxTE_RIGHT)
 702                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 1.0 );
 703             else if (style & wxTE_CENTRE)
 704                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 0.5 );
 705         }
 706 #endif
 707     }
 708
 709     // We want to be notified about text changes.
 710     if (multi_line)
 711     {
 712         g_signal_connect (m_buffer, "changed",
 713                           G_CALLBACK (gtk_text_changed_callback), this);
 714
 715         // .. and handle URLs on multi-line controls with wxTE_AUTO_URL style
 716         if (style & wxTE_AUTO_URL)
 717         {
 718             GtkTextIter start, end;
 719             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 720             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 721
 722             // We create our wxUrl tag here for slight efficiency gain - we
 723             // don't have to check for the tag existance in callbacks,
 724             // hereby it's guaranteed to exist.
 725             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 726                                        "foreground", "blue",
 727                                        "underline", PANGO_UNDERLINE_SINGLE,
 728                                        NULL);
 729
 730             // Check for URLs after each text change
 731             g_signal_connect_after (m_buffer, "insert_text",
 732                                     G_CALLBACK (au_insert_text_callback), this);
 733             g_signal_connect_after (m_buffer, "delete_range",
 734                                     G_CALLBACK (au_delete_range_callback), this);
 735
 736             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 737             // block this callback temporarily. This takes care of gtk+ internal
 738             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 739             // which is undesired because only a part of the URL might be copied.
 740             // The insert-text signal emitted inside it will take care of newly formed
 741             // or wholly copied URLs.
 742             g_signal_connect (m_buffer, "apply_tag",
 743                               G_CALLBACK (au_apply_tag_callback), NULL);
 744
 745             // Check for URLs in the initial string passed to Create
 746             gtk_text_buffer_get_start_iter(m_buffer, &start);
 747             gtk_text_buffer_get_end_iter(m_buffer, &end);
 748             au_check_range(&start, &end);
 749         }
 750     }
 751     else
 752     {
 753         g_signal_connect (m_text, "changed",
 754                           G_CALLBACK (gtk_text_changed_callback), this);
 755     }
 756
 757     g_signal_connect (m_text, "copy-clipboard",
 758                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 759     g_signal_connect (m_text, "cut-clipboard",
 760                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 761     g_signal_connect (m_text, "paste-clipboard",
 762                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 763
 764     m_cursor = wxCursor( wxCURSOR_IBEAM );
 765
 766     wxTextAttr attrDef(GetForegroundColour(), GetBackgroundColour(), GetFont());
 767     SetDefaultStyle( attrDef );
 768
 769     return true;
 770 }
 771
 772
 773 void wxTextCtrl::CalculateScrollbar()
 774 {
 775 }
 776
 777 wxString wxTextCtrl::GetValue() const
 778 {
 779     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 780
 781     wxString tmp;
 782     if ( IsMultiLine() )
 783     {
 784         GtkTextIter start;
 785         gtk_text_buffer_get_start_iter( m_buffer, &start );
 786         GtkTextIter end;
 787         gtk_text_buffer_get_end_iter( m_buffer, &end );
 788         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 789
 790         const wxWxCharBuffer buf = wxGTK_CONV_BACK(text);
 791         if ( buf )
 792             tmp = buf;
 793     }
 794     else
 795     {
 796         const gchar *text = gtk_entry_get_text( GTK_ENTRY(m_text) );
 797         const wxWxCharBuffer buf = wxGTK_CONV_BACK( text );
 798         if ( buf )
 799             tmp = buf;
 800     }
 801
 802     return tmp;
 803 }
 804
 805 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 806 {
 807     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 808     // encoding?
 809
 810     // first check the default text style (we intentionally don't check the
 811     // style for the current position as it doesn't make sense for SetValue())
 812     const wxTextAttr& style = GetDefaultStyle();
 813     wxFontEncoding enc = style.HasFont() ? style.GetFont().GetEncoding()
 814                                          : wxFONTENCODING_SYSTEM;
 815
 816     // fall back to the controls font if no style
 817     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 818         enc = GetFont().GetEncoding();
 819
 820     return enc;
 821 }
 822
 823 void wxTextCtrl::SetValue( const wxString &value )
 824 {
 825     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 826
 827     // the control won't be modified any more as we programmatically replace
 828     // all the existing text, so reset the flag and don't set it again (and do
 829     // it now, before the text event handler is ran so that IsModified() called
 830     // from there returns the expected value)
 831     m_modified = false;
 832     DontMarkDirtyOnNextChange();
 833
 834     if ( IsMultiLine() )
 835     {
 836         const wxCharBuffer buffer(wxGTK_CONV_ENC(value, GetTextEncoding()));
 837         if ( !buffer )
 838         {
 839             // see comment in WriteText() as to why we must warn the user about
 840             // this
 841             wxLogWarning(_("Failed to set text in the text control."));
 842             return;
 843         }
 844
 845         if (gtk_text_buffer_get_char_count(m_buffer) != 0)
 846             IgnoreNextTextUpdate();
 847
 848         gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 849     }
 850     else // single line
 851     {
 852         // gtk_entry_set_text() emits two "changed" signals if the control is
 853         // not empty because internally it calls gtk_editable_delete_text() and
 854         // gtk_editable_insert_text() but we want to have only one event
 855         if ( !GetValue().empty() )
 856             IgnoreNextTextUpdate();
 857
 858         gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV(value) );
 859     }
 860
 861     // GRG, Jun/2000: Changed this after a lot of discussion in
 862     //   the lists. wxWidgets 2.2 will have a set of flags to
 863     //   customize this behaviour.
 864     SetInsertionPoint(0);
 865 }
 866
 867 void wxTextCtrl::WriteText( const wxString &text )
 868 {
 869     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 870
 871     if ( text.empty() )
 872         return;
 873
 874     // check if we have a specific style for the current position
 875     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
 876     wxTextAttr style;
 877     if ( GetStyle(GetInsertionPoint(), style) && style.HasFont() )
 878     {
 879         enc = style.GetFont().GetEncoding();
 880     }
 881
 882     if ( enc == wxFONTENCODING_SYSTEM )
 883         enc = GetTextEncoding();
 884
 885     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
 886     if ( !buffer )
 887     {
 888         // we must log an error here as losing the text like this can be a
 889         // serious problem (e.g. imagine the document edited by user being
 890         // empty instead of containing the correct text)
 891         wxLogWarning(_("Failed to insert text in the control."));
 892         return;
 893     }
 894
 895     // we're changing the text programmatically
 896     DontMarkDirtyOnNextChange();
 897
 898     if ( IsMultiLine() )
 899     {
 900         // First remove the selection if there is one
 901         // TODO:  Is there an easier GTK specific way to do this?
 902         long from, to;
 903         GetSelection(&from, &to);
 904         if (from != to)
 905             Remove(from, to);
 906
 907         // Insert the text
 908         wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
 909
 910         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
 911         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
 912         if ( wxIsSameDouble(adj->value, adj->upper - adj->page_size) )
 913         {
 914             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
 915                     gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
 916         }
 917     }
 918     else // single line
 919     {
 920         // First remove the selection if there is one
 921         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 922
 923         // This moves the cursor pos to behind the inserted text.
 924         gint len = gtk_editable_get_position(GTK_EDITABLE(m_text));
 925
 926         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 927
 928         // Bring entry's cursor uptodate.
 929         gtk_editable_set_position( GTK_EDITABLE(m_text), len );
 930     }
 931 }
 932
 933 void wxTextCtrl::AppendText( const wxString &text )
 934 {
 935     SetInsertionPointEnd();
 936     WriteText( text );
 937 }
 938
 939 wxString wxTextCtrl::GetLineText( long lineNo ) const
 940 {
 941     wxString result;
 942     if ( IsMultiLine() )
 943     {
 944         GtkTextIter line;
 945         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
 946         GtkTextIter end = line;
 947         gtk_text_iter_forward_to_line_end(&end);
 948         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
 949         result = wxGTK_CONV_BACK(text);
 950     }
 951     else
 952     {
 953         if (lineNo == 0)
 954             result = GetValue();
 955     }
 956     return result;
 957 }
 958
 959 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 960 {
 961   /* If you implement this, don't forget to update the documentation!
 962    * (file docs/latex/wx/text.tex) */
 963     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 964 }
 965
 966 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 967 {
 968     if ( IsMultiLine() )
 969     {
 970         GtkTextIter iter;
 971
 972         if (pos > GetLastPosition())
 973             return false;
 974
 975         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
 976
 977         if ( y )
 978             *y = gtk_text_iter_get_line(&iter);
 979         if ( x )
 980             *x = gtk_text_iter_get_line_offset(&iter);
 981     }
 982     else // single line control
 983     {
 984         if ( pos <= GTK_ENTRY(m_text)->text_length )
 985         {
 986             if ( y )
 987                 *y = 0;
 988             if ( x )
 989                 *x = pos;
 990         }
 991         else
 992         {
 993             // index out of bounds
 994             return false;
 995         }
 996     }
 997
 998     return true;
 999 }
1000
1001 long wxTextCtrl::XYToPosition(long x, long y ) const
1002 {
1003     if ( IsSingleLine() )
1004         return 0;
1005
1006     GtkTextIter iter;
1007     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1008         return -1;
1009
1010     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1011     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1012         return -1;
1013
1014     return gtk_text_iter_get_offset(&iter) + x;
1015 }
1016
1017 int wxTextCtrl::GetLineLength(long lineNo) const
1018 {
1019     if ( IsMultiLine() )
1020     {
1021         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1022         if (lineNo > last_line)
1023             return -1;
1024
1025         GtkTextIter iter;
1026         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1027         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1028         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1029     }
1030     else
1031     {
1032         wxString str = GetLineText (lineNo);
1033         return (int) str.length();
1034     }
1035 }
1036
1037 int wxTextCtrl::GetNumberOfLines() const
1038 {
1039     if ( IsMultiLine() )
1040     {
1041         GtkTextIter iter;
1042         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, 0 );
1043
1044         // move forward by one display line until the end is reached
1045         int lineCount = 1;
1046         while ( gtk_text_view_forward_display_line(GTK_TEXT_VIEW(m_text), &iter) )
1047         {
1048             lineCount++;
1049         }
1050
1051         // If the last character in the text buffer is a newline,
1052         // gtk_text_view_forward_display_line() will return false without that
1053         // line being counted. Must add one manually in that case.
1054         GtkTextIter lastCharIter;
1055         gtk_text_buffer_get_iter_at_offset
1056         (
1057             m_buffer,
1058             &lastCharIter,
1059             gtk_text_buffer_get_char_count(m_buffer) - 1
1060         );
1061         gchar lastChar = gtk_text_iter_get_char( &lastCharIter );
1062         if ( lastChar == wxT('\n') )
1063             lineCount++;
1064
1065         return lineCount;
1066     }
1067     else // single line
1068     {
1069         return 1;
1070     }
1071 }
1072
1073 void wxTextCtrl::SetInsertionPoint( long pos )
1074 {
1075     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1076
1077     if ( IsMultiLine() )
1078     {
1079         GtkTextIter iter;
1080         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1081         gtk_text_buffer_place_cursor( m_buffer, &iter );
1082         gtk_text_view_scroll_mark_onscreen
1083         (
1084             GTK_TEXT_VIEW(m_text),
1085             gtk_text_buffer_get_insert( m_buffer )
1086         );
1087     }
1088     else
1089     {
1090         // FIXME: Is the editable's cursor really uptodate without double set_position in GTK2?
1091         gtk_editable_set_position(GTK_EDITABLE(m_text), int(pos));
1092     }
1093 }
1094
1095 void wxTextCtrl::SetInsertionPointEnd()
1096 {
1097     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1098
1099     if ( IsMultiLine() )
1100     {
1101         GtkTextIter end;
1102         gtk_text_buffer_get_end_iter( m_buffer, &end );
1103         gtk_text_buffer_place_cursor( m_buffer, &end );
1104     }
1105     else
1106     {
1107         gtk_editable_set_position( GTK_EDITABLE(m_text), -1 );
1108     }
1109 }
1110
1111 void wxTextCtrl::SetEditable( bool editable )
1112 {
1113     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1114
1115     if ( IsMultiLine() )
1116     {
1117         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1118     }
1119     else
1120     {
1121         gtk_editable_set_editable( GTK_EDITABLE(m_text), editable );
1122     }
1123 }
1124
1125 bool wxTextCtrl::Enable( bool enable )
1126 {
1127     if (!wxWindowBase::Enable(enable))
1128     {
1129         // nothing to do
1130         return false;
1131     }
1132
1133     if ( IsMultiLine() )
1134     {
1135         SetEditable( enable );
1136     }
1137     else
1138     {
1139         gtk_widget_set_sensitive( m_text, enable );
1140     }
1141
1142     return true;
1143 }
1144
1145 // wxGTK-specific: called recursively by Enable,
1146 // to give widgets an oppprtunity to correct their colours after they
1147 // have been changed by Enable
1148 void wxTextCtrl::OnParentEnable( bool enable )
1149 {
1150     // If we have a custom background colour, we use this colour in both
1151     // disabled and enabled mode, or we end up with a different colour under the
1152     // text.
1153     wxColour oldColour = GetBackgroundColour();
1154     if (oldColour.Ok())
1155     {
1156         // Need to set twice or it'll optimize the useful stuff out
1157         if (oldColour == * wxWHITE)
1158             SetBackgroundColour(*wxBLACK);
1159         else
1160             SetBackgroundColour(*wxWHITE);
1161         SetBackgroundColour(oldColour);
1162     }
1163 }
1164
1165 void wxTextCtrl::MarkDirty()
1166 {
1167     m_modified = true;
1168 }
1169
1170 void wxTextCtrl::DiscardEdits()
1171 {
1172     m_modified = false;
1173 }
1174
1175 // ----------------------------------------------------------------------------
1176 // max text length support
1177 // ----------------------------------------------------------------------------
1178
1179 bool wxTextCtrl::IgnoreTextUpdate()
1180 {
1181     if ( m_ignoreNextUpdate )
1182     {
1183         m_ignoreNextUpdate = false;
1184
1185         return true;
1186     }
1187
1188     return false;
1189 }
1190
1191 bool wxTextCtrl::MarkDirtyOnChange()
1192 {
1193     if ( m_dontMarkDirty )
1194     {
1195         m_dontMarkDirty = false;
1196
1197         return false;
1198     }
1199
1200     return true;
1201 }
1202
1203 void wxTextCtrl::SetMaxLength(unsigned long len)
1204 {
1205     if ( !HasFlag(wxTE_MULTILINE) )
1206     {
1207         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
1208
1209         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
1210         // we had tried to enter more text than allowed by max text length and
1211         // the text wasn't really changed
1212         //
1213         // to detect this and generate TEXT_MAXLEN event instead of
1214         // TEXT_CHANGED one in this case we also catch "insert_text" signal
1215         //
1216         // when max len is set to 0 we disconnect our handler as it means that
1217         // we shouldn't check anything any more
1218         if ( len )
1219         {
1220             g_signal_connect (m_text, "insert_text",
1221                               G_CALLBACK (gtk_insert_text_callback), this);
1222         }
1223         else // no checking
1224         {
1225             g_signal_handlers_disconnect_by_func (m_text,
1226                     (gpointer) gtk_insert_text_callback, this);
1227         }
1228     }
1229 }
1230
1231 void wxTextCtrl::SetSelection( long from, long to )
1232 {
1233     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1234
1235     if (from == -1 && to == -1)
1236     {
1237         from = 0;
1238         to = GetValue().length();
1239     }
1240
1241     if ( IsMultiLine() )
1242     {
1243         GtkTextIter fromi, toi;
1244         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1245         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1246
1247         gtk_text_buffer_place_cursor( m_buffer, &toi );
1248         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1249     }
1250     else
1251     {
1252         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1253     }
1254 }
1255
1256 void wxTextCtrl::ShowPosition( long pos )
1257 {
1258     if ( IsMultiLine() )
1259     {
1260         GtkTextIter iter;
1261         gtk_text_buffer_get_start_iter( m_buffer, &iter );
1262         gtk_text_iter_set_offset( &iter, pos );
1263         GtkTextMark *mark = gtk_text_buffer_create_mark( m_buffer, NULL, &iter, TRUE );
1264         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1265     }
1266 }
1267
1268 wxTextCtrlHitTestResult
1269 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1270 {
1271     if ( !IsMultiLine() )
1272     {
1273         // not supported
1274         return wxTE_HT_UNKNOWN;
1275     }
1276
1277     int x, y;
1278     gtk_text_view_window_to_buffer_coords
1279     (
1280         GTK_TEXT_VIEW(m_text),
1281         GTK_TEXT_WINDOW_TEXT,
1282         pt.x, pt.y,
1283         &x, &y
1284     );
1285
1286     GtkTextIter iter;
1287     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1288     if ( pos )
1289         *pos = gtk_text_iter_get_offset(&iter);
1290
1291     return wxTE_HT_ON_TEXT;
1292 }
1293
1294 long wxTextCtrl::GetInsertionPoint() const
1295 {
1296     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1297
1298     if ( IsMultiLine() )
1299     {
1300         // There is no direct accessor for the cursor, but
1301         // internally, the cursor is the "mark" called
1302         // "insert" in the text view's btree structure.
1303
1304         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1305         GtkTextIter cursor;
1306         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1307
1308         return gtk_text_iter_get_offset( &cursor );
1309     }
1310     else
1311     {
1312         return (long) gtk_editable_get_position(GTK_EDITABLE(m_text));
1313     }
1314 }
1315
1316 wxTextPos wxTextCtrl::GetLastPosition() const
1317 {
1318     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1319
1320     int pos = 0;
1321
1322     if ( IsMultiLine() )
1323     {
1324         GtkTextIter end;
1325         gtk_text_buffer_get_end_iter( m_buffer, &end );
1326
1327         pos = gtk_text_iter_get_offset( &end );
1328     }
1329     else
1330     {
1331         pos = GTK_ENTRY(m_text)->text_length;
1332     }
1333
1334     return (long)pos;
1335 }
1336
1337 void wxTextCtrl::Remove( long from, long to )
1338 {
1339     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1340
1341     if ( IsMultiLine() )
1342     {
1343         GtkTextIter fromi, toi;
1344         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1345         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1346
1347         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1348     }
1349     else // single line
1350         gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1351 }
1352
1353 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1354 {
1355     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1356
1357     Remove( from, to );
1358
1359     if (!value.empty())
1360     {
1361         SetInsertionPoint( from );
1362         WriteText( value );
1363     }
1364 }
1365
1366 void wxTextCtrl::Cut()
1367 {
1368     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1369
1370     if ( IsMultiLine() )
1371         g_signal_emit_by_name (m_text, "cut-clipboard");
1372     else
1373         gtk_editable_cut_clipboard(GTK_EDITABLE(m_text));
1374 }
1375
1376 void wxTextCtrl::Copy()
1377 {
1378     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1379
1380     if ( IsMultiLine() )
1381         g_signal_emit_by_name (m_text, "copy-clipboard");
1382     else
1383         gtk_editable_copy_clipboard(GTK_EDITABLE(m_text));
1384 }
1385
1386 void wxTextCtrl::Paste()
1387 {
1388     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1389
1390     if ( IsMultiLine() )
1391         g_signal_emit_by_name (m_text, "paste-clipboard");
1392     else
1393         gtk_editable_paste_clipboard(GTK_EDITABLE(m_text));
1394 }
1395
1396 // Undo/redo
1397 void wxTextCtrl::Undo()
1398 {
1399     // TODO
1400     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1401 }
1402
1403 void wxTextCtrl::Redo()
1404 {
1405     // TODO
1406     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1407 }
1408
1409 bool wxTextCtrl::CanUndo() const
1410 {
1411     // TODO
1412     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1413     return false;
1414 }
1415
1416 bool wxTextCtrl::CanRedo() const
1417 {
1418     // TODO
1419     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1420     return false;
1421 }
1422
1423 // If the return values from and to are the same, there is no
1424 // selection.
1425 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1426 {
1427     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1428
1429     gint from = -1;
1430     gint to = -1;
1431     bool haveSelection = false;
1432
1433      if ( IsMultiLine() )
1434      {
1435          GtkTextIter ifrom, ito;
1436          if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1437          {
1438              haveSelection = true;
1439              from = gtk_text_iter_get_offset(&ifrom);
1440              to = gtk_text_iter_get_offset(&ito);
1441          }
1442      }
1443      else  // not multi-line
1444      {
1445          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1446                                                  &from, &to) )
1447          {
1448              haveSelection = true;
1449          }
1450      }
1451
1452      if (! haveSelection )
1453           from = to = GetInsertionPoint();
1454
1455      if ( from > to )
1456      {
1457          // exchange them to be compatible with wxMSW
1458          gint tmp = from;
1459          from = to;
1460          to = tmp;
1461      }
1462
1463     if ( fromOut )
1464         *fromOut = from;
1465     if ( toOut )
1466         *toOut = to;
1467 }
1468
1469
1470 bool wxTextCtrl::IsEditable() const
1471 {
1472     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1473
1474     if ( IsMultiLine() )
1475     {
1476         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1477     }
1478     else
1479     {
1480         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1481     }
1482 }
1483
1484 bool wxTextCtrl::IsModified() const
1485 {
1486     return m_modified;
1487 }
1488
1489 void wxTextCtrl::Clear()
1490 {
1491     SetValue( wxEmptyString );
1492 }
1493
1494 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1495 {
1496     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1497
1498     if ( key_event.GetKeyCode() == WXK_RETURN )
1499     {
1500         if ( HasFlag(wxTE_PROCESS_ENTER) )
1501         {
1502             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1503             event.SetEventObject(this);
1504             event.SetString(GetValue());
1505             if ( GetEventHandler()->ProcessEvent(event) )
1506                 return;
1507         }
1508
1509         // FIXME: this is not the right place to do it, wxDialog::OnCharHook()
1510         //        probably is
1511         if ( IsSingleLine() )
1512         {
1513             // This will invoke the dialog default action, such
1514             // as the clicking the default button.
1515
1516             wxWindow *top_frame = m_parent;
1517             while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1518                 top_frame = top_frame->GetParent();
1519
1520             if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1521             {
1522                 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1523
1524                 if (window->default_widget)
1525                 {
1526                     gtk_widget_activate (window->default_widget);
1527                     return;
1528                 }
1529             }
1530         }
1531     }
1532
1533     key_event.Skip();
1534 }
1535
1536 GtkWidget* wxTextCtrl::GetConnectWidget()
1537 {
1538     return GTK_WIDGET(m_text);
1539 }
1540
1541 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1542 {
1543     if ( IsMultiLine() )
1544     {
1545         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1546                                         GTK_TEXT_WINDOW_TEXT );
1547     }
1548     else
1549     {
1550         return GTK_ENTRY(m_text)->text_area;
1551     }
1552 }
1553
1554 // the font will change for subsequent text insertiongs
1555 bool wxTextCtrl::SetFont( const wxFont &font )
1556 {
1557     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1558
1559     if ( !wxTextCtrlBase::SetFont(font) )
1560     {
1561         // font didn't change, nothing to do
1562         return false;
1563     }
1564
1565     if ( IsMultiLine() )
1566     {
1567         SetUpdateFont(true);
1568
1569         m_defaultStyle.SetFont(font);
1570
1571         ChangeFontGlobally();
1572     }
1573
1574     return true;
1575 }
1576
1577 void wxTextCtrl::ChangeFontGlobally()
1578 {
1579     // this method is very inefficient and hence should be called as rarely as
1580     // possible!
1581     //
1582     // TODO: it can be implemented much more efficiently for GTK2
1583     wxASSERT_MSG( IsMultiLine(),
1584                   _T("shouldn't be called for single line controls") );
1585
1586     wxString value = GetValue();
1587     if ( !value.empty() )
1588     {
1589         SetUpdateFont(false);
1590
1591         Clear();
1592         AppendText(value);
1593     }
1594 }
1595
1596 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1597 {
1598     if ( !wxControl::SetForegroundColour(colour) )
1599         return false;
1600
1601     // update default fg colour too
1602     m_defaultStyle.SetTextColour(colour);
1603
1604     return true;
1605 }
1606
1607 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1608 {
1609     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1610
1611     if ( !wxControl::SetBackgroundColour( colour ) )
1612         return false;
1613
1614     if (!m_backgroundColour.Ok())
1615         return false;
1616
1617     // change active background color too
1618     m_defaultStyle.SetBackgroundColour( colour );
1619
1620     return true;
1621 }
1622
1623 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1624 {
1625     if ( IsMultiLine() )
1626     {
1627         if ( style.IsDefault() )
1628         {
1629             // nothing to do
1630             return true;
1631         }
1632
1633         gint l = gtk_text_buffer_get_char_count( m_buffer );
1634
1635         wxCHECK_MSG( start >= 0 && end <= l, false,
1636                      _T("invalid range in wxTextCtrl::SetStyle") );
1637
1638         GtkTextIter starti, endi;
1639         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1640         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1641
1642         // use the attributes from style which are set in it and fall back
1643         // first to the default style and then to the text control default
1644         // colours for the others
1645         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1646
1647         wxGtkTextApplyTagsFromAttr( m_buffer, attr, &starti, &endi );
1648
1649         return true;
1650     }
1651
1652     // else single line
1653     // cannot do this for GTK+'s Entry widget
1654     return false;
1655 }
1656
1657 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1658 {
1659     gtk_widget_modify_style(m_text, style);
1660 }
1661
1662 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1663 {
1664     Cut();
1665 }
1666
1667 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1668 {
1669     Copy();
1670 }
1671
1672 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1673 {
1674     Paste();
1675 }
1676
1677 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1678 {
1679     Undo();
1680 }
1681
1682 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1683 {
1684     Redo();
1685 }
1686
1687 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1688 {
1689     event.Enable( CanCut() );
1690 }
1691
1692 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1693 {
1694     event.Enable( CanCopy() );
1695 }
1696
1697 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1698 {
1699     event.Enable( CanPaste() );
1700 }
1701
1702 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1703 {
1704     event.Enable( CanUndo() );
1705 }
1706
1707 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1708 {
1709     event.Enable( CanRedo() );
1710 }
1711
1712 wxSize wxTextCtrl::DoGetBestSize() const
1713 {
1714     // FIXME should be different for multi-line controls...
1715     wxSize ret( wxControl::DoGetBestSize() );
1716     wxSize best(80, ret.y);
1717     CacheBestSize(best);
1718     return best;
1719 }
1720
1721 // ----------------------------------------------------------------------------
1722 // freeze/thaw
1723 // ----------------------------------------------------------------------------
1724
1725 void wxTextCtrl::Freeze()
1726 {
1727     if ( HasFlag(wxTE_MULTILINE) )
1728     {
1729         if ( !m_frozenness++ )
1730         {
1731             // freeze textview updates and remove buffer
1732             g_signal_connect (m_text, "expose_event",
1733                               G_CALLBACK (gtk_text_exposed_callback), this);
1734             g_signal_connect (m_widget, "expose_event",
1735                               G_CALLBACK (gtk_text_exposed_callback), this);
1736             gtk_widget_set_sensitive(m_widget, false);
1737             g_object_ref(m_buffer);
1738             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), gtk_text_buffer_new(NULL));
1739         }
1740     }
1741 }
1742
1743 void wxTextCtrl::Thaw()
1744 {
1745     if ( HasFlag(wxTE_MULTILINE) )
1746     {
1747         wxASSERT_MSG( m_frozenness > 0, _T("Thaw() without matching Freeze()") );
1748
1749         if ( !--m_frozenness )
1750         {
1751             // Reattach buffer and thaw textview updates
1752             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1753             g_object_unref(m_buffer);
1754             gtk_widget_set_sensitive(m_widget, true);
1755             g_signal_handlers_disconnect_by_func (m_widget,
1756                     (gpointer) gtk_text_exposed_callback, this);
1757             g_signal_handlers_disconnect_by_func (m_text,
1758                     (gpointer) gtk_text_exposed_callback, this);
1759         }
1760     }
1761 }
1762
1763 // ----------------------------------------------------------------------------
1764 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1765 // ----------------------------------------------------------------------------
1766
1767 // FIXME: when dragging on a link the sample gets an "Unknown event".
1768 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1769 // a buggy sample, or something else
1770 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1771 {
1772     event.Skip();
1773     if( !HasFlag(wxTE_AUTO_URL) )
1774         return;
1775
1776     gint x, y;
1777     GtkTextIter start, end;
1778     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1779                                                 "wxUrl");
1780
1781     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1782                                           event.GetX(), event.GetY(), &x, &y);
1783
1784     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1785     if (!gtk_text_iter_has_tag(&end, tag))
1786     {
1787         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1788                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1789         return;
1790     }
1791
1792     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1793                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1794
1795     start = end;
1796     if(!gtk_text_iter_begins_tag(&start, tag))
1797         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1798     if(!gtk_text_iter_ends_tag(&end, tag))
1799         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1800
1801     // Native context menu is probably not desired on an URL.
1802     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1803     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1804         event.Skip(false);
1805
1806     wxTextUrlEvent url_event(m_windowId, event,
1807                              gtk_text_iter_get_offset(&start),
1808                              gtk_text_iter_get_offset(&end));
1809
1810     InitCommandEvent(url_event);
1811     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1812     //event.Skip(!GetEventHandler()->ProcessEvent(url_event));
1813     GetEventHandler()->ProcessEvent(url_event);
1814 }
1815
1816 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
1817 {
1818     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
1819
1820     // GtkTextView starts a drag operation when left mouse button is pressed
1821     // and ends it when it is released and if it doesn't get the release event
1822     // the next click on a control results in an assertion failure inside
1823     // gtk_text_view_start_selection_drag() which simply *kills* the program
1824     // without anything we can do about it, so always let GTK+ have this event
1825     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
1826 }
1827
1828 // static
1829 wxVisualAttributes
1830 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1831 {
1832     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1833 }