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 // data
  36 //-----------------------------------------------------------------------------
  37
  38 extern wxWindowGTK *g_delayedFocus;
  39
  40 // ----------------------------------------------------------------------------
  41 // helpers
  42 // ----------------------------------------------------------------------------
  43
  44 extern "C" {
  45 static void wxGtkOnRemoveTag(GtkTextBuffer *buffer,
  46                              GtkTextTag *tag,
  47                              GtkTextIter *start,
  48                              GtkTextIter *end,
  49                              char *prefix)
  50 {
  51     gchar *name;
  52     g_object_get (tag, "name", &name, NULL);
  53
  54     if (!name || strncmp(name, prefix, strlen(prefix)))
  55         // anonymous tag or not starting with prefix - don't remove
  56         g_signal_stop_emission_by_name (buffer, "remove_tag");
  57
  58     g_free(name);
  59 }
  60 }
  61
  62 extern "C" {
  63 static void wxGtkTextApplyTagsFromAttr(GtkTextBuffer *text_buffer,
  64                                        const wxTextAttr& attr,
  65                                        GtkTextIter *start,
  66                                        GtkTextIter *end)
  67 {
  68     static gchar buf[1024];
  69     GtkTextTag *tag;
  70
  71     gulong remove_handler_id = g_signal_connect (text_buffer, "remove_tag",
  72             G_CALLBACK (wxGtkOnRemoveTag), gpointer("WX"));
  73     gtk_text_buffer_remove_all_tags(text_buffer, start, end);
  74     g_signal_handler_disconnect (text_buffer, remove_handler_id);
  75
  76     if (attr.HasFont())
  77     {
  78         char *font_string;
  79         PangoFontDescription *font_description = attr.GetFont().GetNativeFontInfo()->description;
  80         font_string = pango_font_description_to_string(font_description);
  81         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string);
  82         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  83                                          buf );
  84         if (!tag)
  85             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  86                                               "font-desc", font_description,
  87                                               NULL );
  88         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  89         g_free (font_string);
  90
  91         if (attr.GetFont().GetUnderlined())
  92         {
  93             g_snprintf(buf, sizeof(buf), "WXFONTUNDERLINE");
  94             tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  95                                              buf );
  96             if (!tag)
  97                 tag = gtk_text_buffer_create_tag( text_buffer, buf,
  98                                                   "underline-set", TRUE,
  99                                                   "underline", PANGO_UNDERLINE_SINGLE,
 100                                                   NULL );
 101             gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 102         }
 103     }
 104
 105     if (attr.HasTextColour())
 106     {
 107         const GdkColor *colFg = attr.GetTextColour().GetColor();
 108         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
 109                    colFg->red, colFg->green, colFg->blue);
 110         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 111                                          buf );
 112         if (!tag)
 113             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 114                                               "foreground-gdk", colFg, NULL );
 115         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 116     }
 117
 118     if (attr.HasBackgroundColour())
 119     {
 120         const GdkColor *colBg = attr.GetBackgroundColour().GetColor();
 121         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
 122                    colBg->red, colBg->green, colBg->blue);
 123         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 124                                          buf );
 125         if (!tag)
 126             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 127                                               "background-gdk", colBg, NULL );
 128         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 129     }
 130
 131     if (attr.HasAlignment())
 132     {
 133         GtkTextIter para_start, para_end = *end;
 134         gtk_text_buffer_get_iter_at_line( text_buffer,
 135                                           &para_start,
 136                                           gtk_text_iter_get_line(start) );
 137         gtk_text_iter_forward_line(&para_end);
 138
 139         remove_handler_id = g_signal_connect (text_buffer, "remove_tag",
 140                                               G_CALLBACK(wxGtkOnRemoveTag),
 141                                               gpointer("WXALIGNMENT"));
 142         gtk_text_buffer_remove_all_tags( text_buffer, &para_start, &para_end );
 143         g_signal_handler_disconnect (text_buffer, remove_handler_id);
 144
 145         GtkJustification align;
 146         switch (attr.GetAlignment())
 147         {
 148             default:
 149                 align = GTK_JUSTIFY_LEFT;
 150                 break;
 151             case wxTEXT_ALIGNMENT_RIGHT:
 152                 align = GTK_JUSTIFY_RIGHT;
 153                 break;
 154             case wxTEXT_ALIGNMENT_CENTER:
 155                 align = GTK_JUSTIFY_CENTER;
 156                 break;
 157             // gtk+ doesn't support justify as of gtk+-2.7.4
 158         }
 159
 160         g_snprintf(buf, sizeof(buf), "WXALIGNMENT %d", align);
 161         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 162                                          buf );
 163         if (!tag)
 164             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 165                                               "justification", align, NULL );
 166         gtk_text_buffer_apply_tag( text_buffer, tag, &para_start, &para_end );
 167     }
 168 }
 169 }
 170
 171 extern "C" {
 172 static void wxGtkTextInsert(GtkWidget *text,
 173                             GtkTextBuffer *text_buffer,
 174                             const wxTextAttr& attr,
 175                             const wxCharBuffer& buffer)
 176
 177 {
 178     gint start_offset;
 179     GtkTextIter iter, start;
 180
 181     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 182                                      gtk_text_buffer_get_insert (text_buffer) );
 183     start_offset = gtk_text_iter_get_offset (&iter);
 184     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 185
 186     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 187
 188     wxGtkTextApplyTagsFromAttr(text_buffer, attr, &start, &iter);
 189 }
 190 }
 191
 192 // ----------------------------------------------------------------------------
 193 // "insert_text" for GtkEntry
 194 // ----------------------------------------------------------------------------
 195
 196 extern "C" {
 197 static void
 198 gtk_insert_text_callback(GtkEditable *editable,
 199                          const gchar *new_text,
 200                          gint new_text_length,
 201                          gint *position,
 202                          wxTextCtrl *win)
 203 {
 204     if (g_isIdle)
 205         wxapp_install_idle_handler();
 206
 207     // we should only be called if we have a max len limit at all
 208     GtkEntry *entry = GTK_ENTRY (editable);
 209
 210     wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
 211
 212     // check that we don't overflow the max length limit
 213     //
 214     // FIXME: this doesn't work when we paste a string which is going to be
 215     //        truncated
 216     if ( entry->text_length == entry->text_max_length )
 217     {
 218         // we don't need to run the base class version at all
 219         g_signal_stop_emission_by_name (editable, "insert_text");
 220
 221         // remember that the next changed signal is to be ignored to avoid
 222         // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
 223         win->IgnoreNextTextUpdate();
 224
 225         // and generate the correct one ourselves
 226         wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
 227         event.SetEventObject(win);
 228         event.SetString(win->GetValue());
 229         win->GetEventHandler()->ProcessEvent( event );
 230     }
 231 }
 232 }
 233
 234 // Implementation of wxTE_AUTO_URL for wxGTK2 by Mart Raudsepp,
 235
 236 extern "C" {
 237 static void
 238 au_apply_tag_callback(GtkTextBuffer *buffer,
 239                       GtkTextTag *tag,
 240                       GtkTextIter *start,
 241                       GtkTextIter *end,
 242                       gpointer textctrl)
 243 {
 244     if(tag == gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl"))
 245         g_signal_stop_emission_by_name (buffer, "apply_tag");
 246 }
 247 }
 248
 249 //-----------------------------------------------------------------------------
 250 //  GtkTextCharPredicates for gtk_text_iter_*_find_char
 251 //-----------------------------------------------------------------------------
 252
 253 extern "C" {
 254 static gboolean
 255 pred_whitespace (gunichar ch, gpointer user_data)
 256 {
 257     return g_unichar_isspace(ch);
 258 }
 259 }
 260
 261 extern "C" {
 262 static gboolean
 263 pred_non_whitespace (gunichar ch, gpointer user_data)
 264 {
 265     return !g_unichar_isspace(ch);
 266 }
 267 }
 268
 269 extern "C" {
 270 static gboolean
 271 pred_nonpunct (gunichar ch, gpointer user_data)
 272 {
 273     return !g_unichar_ispunct(ch);
 274 }
 275 }
 276
 277 extern "C" {
 278 static gboolean
 279 pred_nonpunct_or_slash (gunichar ch, gpointer user_data)
 280 {
 281     return !g_unichar_ispunct(ch) || ch == '/';
 282 }
 283 }
 284
 285 //-----------------------------------------------------------------------------
 286 //  Check for links between s and e and correct tags as necessary
 287 //-----------------------------------------------------------------------------
 288
 289 // This function should be made match better while being efficient at one point.
 290 // Most probably with a row of regular expressions.
 291 extern "C" {
 292 static void
 293 au_check_word( GtkTextIter *s, GtkTextIter *e )
 294 {
 295     static const char *URIPrefixes[] =
 296     {
 297         "http://",
 298         "ftp://",
 299         "www.",
 300         "ftp.",
 301         "mailto://",
 302         "https://",
 303         "file://",
 304         "nntp://",
 305         "news://",
 306         "telnet://",
 307         "mms://",
 308         "gopher://",
 309         "prospero://",
 310         "wais://",
 311     };
 312
 313     GtkTextIter start = *s, end = *e;
 314     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 315
 316     // Get our special link tag
 317     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 318
 319     // Get rid of punctuation from beginning and end.
 320     // Might want to move this to au_check_range if an improved link checking doesn't
 321     // use some intelligent punctuation checking itself (beware of undesired iter modifications).
 322     if(g_unichar_ispunct( gtk_text_iter_get_char( &start ) ) )
 323         gtk_text_iter_forward_find_char( &start, pred_nonpunct, NULL, e );
 324
 325     gtk_text_iter_backward_find_char( &end, pred_nonpunct_or_slash, NULL, &start );
 326     gtk_text_iter_forward_char(&end);
 327
 328     gchar* text = gtk_text_iter_get_text( &start, &end );
 329     size_t len = strlen(text), prefix_len;
 330     size_t n;
 331
 332     for( n = 0; n < WXSIZEOF(URIPrefixes); ++n )
 333     {
 334         prefix_len = strlen(URIPrefixes[n]);
 335         if((len > prefix_len) && !strncasecmp(text, URIPrefixes[n], prefix_len))
 336             break;
 337     }
 338
 339     if(n < WXSIZEOF(URIPrefixes))
 340     {
 341         gulong signal_id = g_signal_handler_find (buffer,
 342                                                   (GSignalMatchType) (G_SIGNAL_MATCH_FUNC),
 343                                                   0, 0, NULL,
 344                                                   (gpointer)au_apply_tag_callback, NULL);
 345
 346         g_signal_handler_block (buffer, signal_id);
 347         gtk_text_buffer_apply_tag(buffer, tag, &start, &end);
 348         g_signal_handler_unblock (buffer, signal_id);
 349     }
 350 }
 351 }
 352
 353 extern "C" {
 354 static void
 355 au_check_range(GtkTextIter *s,
 356                GtkTextIter *range_end)
 357 {
 358     GtkTextIter range_start = *s;
 359     GtkTextIter word_end;
 360     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 361     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 362
 363     gtk_text_buffer_remove_tag(buffer, tag, s, range_end);
 364
 365     if(g_unichar_isspace(gtk_text_iter_get_char(&range_start)))
 366         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 367
 368     while(!gtk_text_iter_equal(&range_start, range_end))
 369     {
 370         word_end = range_start;
 371         gtk_text_iter_forward_find_char(&word_end, pred_whitespace, NULL, range_end);
 372
 373         // Now we should have a word delimited by range_start and word_end, correct link tags
 374         au_check_word(&range_start, &word_end);
 375
 376         range_start = word_end;
 377         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 378     }
 379 }
 380 }
 381
 382 //-----------------------------------------------------------------------------
 383 //  "insert-text" for GtkTextBuffer
 384 //-----------------------------------------------------------------------------
 385
 386 extern "C" {
 387 static void
 388 au_insert_text_callback(GtkTextBuffer *buffer,
 389                         GtkTextIter *end,
 390                         gchar *text,
 391                         gint len,
 392                         wxTextCtrl *win)
 393 {
 394     if (!len || !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 395         return;
 396
 397     GtkTextIter start = *end;
 398     gtk_text_iter_backward_chars(&start, g_utf8_strlen(text, len));
 399
 400     GtkTextIter line_start = start;
 401     GtkTextIter line_end = *end;
 402     GtkTextIter words_start = start;
 403     GtkTextIter words_end = *end;
 404
 405     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(&start));
 406     gtk_text_iter_forward_to_line_end(&line_end);
 407     gtk_text_iter_backward_find_char(&words_start, pred_whitespace, NULL, &line_start);
 408     gtk_text_iter_forward_find_char(&words_end, pred_whitespace, NULL, &line_end);
 409
 410     au_check_range(&words_start, &words_end);
 411 }
 412 }
 413
 414 //-----------------------------------------------------------------------------
 415 //  "delete-range" for GtkTextBuffer
 416 //-----------------------------------------------------------------------------
 417
 418 extern "C" {
 419 static void
 420 au_delete_range_callback(GtkTextBuffer *buffer,
 421                          GtkTextIter *start,
 422                          GtkTextIter *end,
 423                          wxTextCtrl *win)
 424 {
 425     if( !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 426         return;
 427
 428     GtkTextIter line_start = *start, line_end = *end;
 429
 430     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(start));
 431     gtk_text_iter_forward_to_line_end(&line_end);
 432     gtk_text_iter_backward_find_char(start, pred_whitespace, NULL, &line_start);
 433     gtk_text_iter_forward_find_char(end, pred_whitespace, NULL, &line_end);
 434
 435     au_check_range(start, end);
 436 }
 437 }
 438
 439
 440 //-----------------------------------------------------------------------------
 441 //  "changed"
 442 //-----------------------------------------------------------------------------
 443
 444 extern "C" {
 445 static void
 446 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
 447 {
 448     if ( win->IgnoreTextUpdate() )
 449         return;
 450
 451     if (!win->m_hasVMT) return;
 452
 453     if (g_isIdle)
 454         wxapp_install_idle_handler();
 455
 456     if ( win->MarkDirtyOnChange() )
 457         win->MarkDirty();
 458
 459     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
 460     event.SetEventObject( win );
 461     win->GetEventHandler()->ProcessEvent( event );
 462 }
 463 }
 464
 465 //-----------------------------------------------------------------------------
 466 //  clipboard events: "copy-clipboard", "cut-clipboard", "paste-clipboard"
 467 //-----------------------------------------------------------------------------
 468
 469 // common part of the event handlers below
 470 static void
 471 handle_text_clipboard_callback( GtkWidget *widget, wxTextCtrl *win,
 472                                 wxEventType eventType, const gchar * signal_name)
 473 {
 474     wxClipboardTextEvent event( eventType, win->GetId() );
 475     event.SetEventObject( win );
 476     if ( win->GetEventHandler()->ProcessEvent( event ) )
 477     {
 478         // don't let the default processing to take place if we did something
 479         // ourselves in the event handler
 480         g_signal_stop_emission_by_name (widget, signal_name);
 481     }
 482 }
 483
 484 extern "C" {
 485 static void
 486 gtk_copy_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 487 {
 488     handle_text_clipboard_callback(
 489         widget, win, wxEVT_COMMAND_TEXT_COPY, "copy-clipboard" );
 490 }
 491
 492 static void
 493 gtk_cut_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 494 {
 495     handle_text_clipboard_callback(
 496         widget, win, wxEVT_COMMAND_TEXT_CUT, "cut-clipboard" );
 497 }
 498
 499 static void
 500 gtk_paste_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 501 {
 502     handle_text_clipboard_callback(
 503         widget, win, wxEVT_COMMAND_TEXT_PASTE, "paste-clipboard" );
 504 }
 505 }
 506
 507 //-----------------------------------------------------------------------------
 508 // "expose_event" from scrolled window and textview
 509 //-----------------------------------------------------------------------------
 510
 511 extern "C" {
 512 static gboolean
 513 gtk_text_exposed_callback( GtkWidget *widget, GdkEventExpose *event, wxTextCtrl *win )
 514 {
 515     return TRUE;
 516 }
 517 }
 518
 519
 520 //-----------------------------------------------------------------------------
 521 //  wxTextCtrl
 522 //-----------------------------------------------------------------------------
 523
 524 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 525
 526 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 527     EVT_CHAR(wxTextCtrl::OnChar)
 528
 529     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 530     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 531     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 532     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 533     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 534
 535     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 536     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 537     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 538     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 539     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 540
 541     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 542     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 543     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 544     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 545     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 546     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 547     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 548     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 549     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 550 END_EVENT_TABLE()
 551
 552 void wxTextCtrl::Init()
 553 {
 554     m_dontMarkDirty =
 555     m_ignoreNextUpdate =
 556     m_modified = false;
 557
 558     SetUpdateFont(false);
 559
 560     m_text = NULL;
 561     m_frozenness = 0;
 562     m_gdkHandCursor = NULL;
 563     m_gdkXTermCursor = NULL;
 564 }
 565
 566 wxTextCtrl::~wxTextCtrl()
 567 {
 568     if(m_gdkHandCursor)
 569         gdk_cursor_unref(m_gdkHandCursor);
 570     if(m_gdkXTermCursor)
 571         gdk_cursor_unref(m_gdkXTermCursor);
 572 }
 573
 574 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 575                         wxWindowID id,
 576                         const wxString &value,
 577                         const wxPoint &pos,
 578                         const wxSize &size,
 579                         long style,
 580                         const wxValidator& validator,
 581                         const wxString &name )
 582 {
 583     Init();
 584
 585     Create( parent, id, value, pos, size, style, validator, name );
 586 }
 587
 588 bool wxTextCtrl::Create( wxWindow *parent,
 589                          wxWindowID id,
 590                          const wxString &value,
 591                          const wxPoint &pos,
 592                          const wxSize &size,
 593                          long style,
 594                          const wxValidator& validator,
 595                          const wxString &name )
 596 {
 597     m_needParent = true;
 598     m_acceptsFocus = true;
 599
 600     if (!PreCreation( parent, pos, size ) ||
 601         !CreateBase( parent, id, pos, size, style, validator, name ))
 602     {
 603         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 604         return false;
 605     }
 606
 607     bool multi_line = (style & wxTE_MULTILINE) != 0;
 608
 609     if (multi_line)
 610     {
 611         // Create view
 612         m_text = gtk_text_view_new();
 613
 614         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 615
 616         // create scrolled window
 617         m_widget = gtk_scrolled_window_new( NULL, NULL );
 618         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 619                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 620         // for ScrollLines/Pages
 621         m_scrollBar[1] = (GtkRange*)((GtkScrolledWindow*)m_widget)->vscrollbar;
 622
 623         // Insert view into scrolled window
 624         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 625
 626         // translate wx wrapping style to GTK+
 627         GtkWrapMode wrap;
 628         if ( HasFlag( wxTE_DONTWRAP ) )
 629             wrap = GTK_WRAP_NONE;
 630         else if ( HasFlag( wxTE_CHARWRAP ) )
 631             wrap = GTK_WRAP_CHAR;
 632         else if ( HasFlag( wxTE_WORDWRAP ) )
 633             wrap = GTK_WRAP_WORD;
 634         else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 635         {
 636             // GTK_WRAP_WORD_CHAR seems to be new in GTK+ 2.4
 637 #ifdef __WXGTK24__
 638             if ( !gtk_check_version(2,4,0) )
 639             {
 640                 wrap = GTK_WRAP_WORD_CHAR;
 641             }
 642             else
 643 #endif
 644             wrap = GTK_WRAP_WORD;
 645         }
 646
 647         gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 648
 649         GtkScrolledWindowSetBorder(m_widget, style);
 650
 651         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 652
 653         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 654     }
 655     else
 656     {
 657         // a single-line text control: no need for scrollbars
 658         m_widget =
 659         m_text = gtk_entry_new();
 660
 661         if (style & wxNO_BORDER)
 662             g_object_set (m_text, "has-frame", FALSE, NULL);
 663     }
 664
 665     m_parent->DoAddChild( this );
 666
 667     m_focusWidget = m_text;
 668
 669     PostCreation(size);
 670
 671     if (multi_line)
 672     {
 673         gtk_widget_show(m_text);
 674     }
 675
 676     if (!value.empty())
 677     {
 678         SetValue( value );
 679     }
 680
 681     if (style & wxTE_PASSWORD)
 682     {
 683         if (!multi_line)
 684             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 685     }
 686
 687     if (style & wxTE_READONLY)
 688     {
 689         if (!multi_line)
 690             gtk_editable_set_editable( GTK_EDITABLE(m_text), FALSE );
 691         else
 692             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 693     }
 694
 695     if (multi_line)
 696     {
 697         if (style & wxTE_RIGHT)
 698             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_RIGHT );
 699         else if (style & wxTE_CENTRE)
 700             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_CENTER );
 701         // Left justify (alignment) is the default and we don't need to apply GTK_JUSTIFY_LEFT
 702     }
 703     else
 704     {
 705 #ifdef __WXGTK24__
 706         // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 707         if (!gtk_check_version(2,4,0))
 708         {
 709             if (style & wxTE_RIGHT)
 710                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 1.0 );
 711             else if (style & wxTE_CENTRE)
 712                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 0.5 );
 713         }
 714 #endif
 715     }
 716
 717     // We want to be notified about text changes.
 718     if (multi_line)
 719     {
 720         g_signal_connect (m_buffer, "changed",
 721                           G_CALLBACK (gtk_text_changed_callback), this);
 722
 723         // .. and handle URLs on multi-line controls with wxTE_AUTO_URL style
 724         if (style & wxTE_AUTO_URL)
 725         {
 726             GtkTextIter start, end;
 727             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 728             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 729
 730             // We create our wxUrl tag here for slight efficiency gain - we
 731             // don't have to check for the tag existance in callbacks,
 732             // hereby it's guaranteed to exist.
 733             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 734                                        "foreground", "blue",
 735                                        "underline", PANGO_UNDERLINE_SINGLE,
 736                                        NULL);
 737
 738             // Check for URLs after each text change
 739             g_signal_connect_after (m_buffer, "insert_text",
 740                                     G_CALLBACK (au_insert_text_callback), this);
 741             g_signal_connect_after (m_buffer, "delete_range",
 742                                     G_CALLBACK (au_delete_range_callback), this);
 743
 744             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 745             // block this callback temporarily. This takes care of gtk+ internal
 746             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 747             // which is undesired because only a part of the URL might be copied.
 748             // The insert-text signal emitted inside it will take care of newly formed
 749             // or wholly copied URLs.
 750             g_signal_connect (m_buffer, "apply_tag",
 751                               G_CALLBACK (au_apply_tag_callback), NULL);
 752
 753             // Check for URLs in the initial string passed to Create
 754             gtk_text_buffer_get_start_iter(m_buffer, &start);
 755             gtk_text_buffer_get_end_iter(m_buffer, &end);
 756             au_check_range(&start, &end);
 757         }
 758     }
 759     else
 760     {
 761         g_signal_connect (m_text, "changed",
 762                           G_CALLBACK (gtk_text_changed_callback), this);
 763     }
 764
 765     g_signal_connect (m_text, "copy-clipboard",
 766                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 767     g_signal_connect (m_text, "cut-clipboard",
 768                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 769     g_signal_connect (m_text, "paste-clipboard",
 770                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 771
 772     m_cursor = wxCursor( wxCURSOR_IBEAM );
 773
 774     wxTextAttr attrDef(GetForegroundColour(), GetBackgroundColour(), GetFont());
 775     SetDefaultStyle( attrDef );
 776
 777     return true;
 778 }
 779
 780
 781 void wxTextCtrl::CalculateScrollbar()
 782 {
 783 }
 784
 785 wxString wxTextCtrl::GetValue() const
 786 {
 787     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 788
 789     wxString tmp;
 790     if ( IsMultiLine() )
 791     {
 792         GtkTextIter start;
 793         gtk_text_buffer_get_start_iter( m_buffer, &start );
 794         GtkTextIter end;
 795         gtk_text_buffer_get_end_iter( m_buffer, &end );
 796         gchar *text = gtk_text_buffer_get_text( m_buffer, &start, &end, TRUE );
 797
 798         const wxWxCharBuffer buf = wxGTK_CONV_BACK(text);
 799         if ( buf )
 800             tmp = buf;
 801
 802         g_free( text );
 803     }
 804     else
 805     {
 806         const gchar *text = gtk_entry_get_text( GTK_ENTRY(m_text) );
 807         const wxWxCharBuffer buf = wxGTK_CONV_BACK( text );
 808         if ( buf )
 809             tmp = buf;
 810     }
 811
 812     return tmp;
 813 }
 814
 815 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 816 {
 817     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 818     // encoding?
 819
 820     // first check the default text style (we intentionally don't check the
 821     // style for the current position as it doesn't make sense for SetValue())
 822     const wxTextAttr& style = GetDefaultStyle();
 823     wxFontEncoding enc = style.HasFont() ? style.GetFont().GetEncoding()
 824                                          : wxFONTENCODING_SYSTEM;
 825
 826     // fall back to the controls font if no style
 827     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 828         enc = GetFont().GetEncoding();
 829
 830     return enc;
 831 }
 832
 833 void wxTextCtrl::SetValue( const wxString &value )
 834 {
 835     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 836
 837     // the control won't be modified any more as we programmatically replace
 838     // all the existing text, so reset the flag and don't set it again (and do
 839     // it now, before the text event handler is ran so that IsModified() called
 840     // from there returns the expected value)
 841     m_modified = false;
 842     DontMarkDirtyOnNextChange();
 843
 844     if ( IsMultiLine() )
 845     {
 846         const wxCharBuffer buffer(wxGTK_CONV_ENC(value, GetTextEncoding()));
 847         if ( !buffer )
 848         {
 849             // see comment in WriteText() as to why we must warn the user about
 850             // this
 851             wxLogWarning(_("Failed to set text in the text control."));
 852             return;
 853         }
 854
 855         if (gtk_text_buffer_get_char_count(m_buffer) != 0)
 856             IgnoreNextTextUpdate();
 857
 858         gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 859     }
 860     else // single line
 861     {
 862         // gtk_entry_set_text() emits two "changed" signals because internally
 863         // it calls gtk_editable_delete_text() and gtk_editable_insert_text()
 864         // but we want to have only one event
 865         IgnoreNextTextUpdate();
 866
 867         gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV(value) );
 868     }
 869
 870     // GRG, Jun/2000: Changed this after a lot of discussion in
 871     //   the lists. wxWidgets 2.2 will have a set of flags to
 872     //   customize this behaviour.
 873     SetInsertionPoint(0);
 874 }
 875
 876 void wxTextCtrl::WriteText( const wxString &text )
 877 {
 878     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 879
 880     if ( text.empty() )
 881         return;
 882
 883     // check if we have a specific style for the current position
 884     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
 885     wxTextAttr style;
 886     if ( GetStyle(GetInsertionPoint(), style) && style.HasFont() )
 887     {
 888         enc = style.GetFont().GetEncoding();
 889     }
 890
 891     if ( enc == wxFONTENCODING_SYSTEM )
 892         enc = GetTextEncoding();
 893
 894     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
 895     if ( !buffer )
 896     {
 897         // we must log an error here as losing the text like this can be a
 898         // serious problem (e.g. imagine the document edited by user being
 899         // empty instead of containing the correct text)
 900         wxLogWarning(_("Failed to insert text in the control."));
 901         return;
 902     }
 903
 904     // we're changing the text programmatically
 905     DontMarkDirtyOnNextChange();
 906
 907     if ( IsMultiLine() )
 908     {
 909         // First remove the selection if there is one
 910         // TODO:  Is there an easier GTK specific way to do this?
 911         long from, to;
 912         GetSelection(&from, &to);
 913         if (from != to)
 914             Remove(from, to);
 915
 916         // Insert the text
 917         wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
 918
 919         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
 920         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
 921         if ( wxIsSameDouble(adj->value, adj->upper - adj->page_size) )
 922         {
 923             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
 924                     gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
 925         }
 926     }
 927     else // single line
 928     {
 929         // First remove the selection if there is one
 930         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 931
 932         // This moves the cursor pos to behind the inserted text.
 933         gint len = gtk_editable_get_position(GTK_EDITABLE(m_text));
 934
 935         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 936
 937         // Bring entry's cursor uptodate.
 938         gtk_editable_set_position( GTK_EDITABLE(m_text), len );
 939     }
 940 }
 941
 942 void wxTextCtrl::AppendText( const wxString &text )
 943 {
 944     SetInsertionPointEnd();
 945     WriteText( text );
 946 }
 947
 948 wxString wxTextCtrl::GetLineText( long lineNo ) const
 949 {
 950     if ( IsMultiLine() )
 951     {
 952         GtkTextIter line;
 953         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
 954         GtkTextIter end = line;
 955         gtk_text_iter_forward_to_line_end(&end);
 956         gchar *text = gtk_text_buffer_get_text(m_buffer,&line,&end,TRUE);
 957         wxString result(wxGTK_CONV_BACK(text));
 958         g_free(text);
 959         return result;
 960     }
 961     else
 962     {
 963         if (lineNo == 0) return GetValue();
 964         return wxEmptyString;
 965     }
 966 }
 967
 968 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 969 {
 970   /* If you implement this, don't forget to update the documentation!
 971    * (file docs/latex/wx/text.tex) */
 972     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 973 }
 974
 975 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 976 {
 977     if ( IsMultiLine() )
 978     {
 979         GtkTextIter iter;
 980
 981         if (pos > GetLastPosition())
 982             return false;
 983
 984         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
 985
 986         if ( y )
 987             *y = gtk_text_iter_get_line(&iter);
 988         if ( x )
 989             *x = gtk_text_iter_get_line_offset(&iter);
 990     }
 991     else // single line control
 992     {
 993         if ( pos <= GTK_ENTRY(m_text)->text_length )
 994         {
 995             if ( y )
 996                 *y = 0;
 997             if ( x )
 998                 *x = pos;
 999         }
1000         else
1001         {
1002             // index out of bounds
1003             return false;
1004         }
1005     }
1006
1007     return true;
1008 }
1009
1010 long wxTextCtrl::XYToPosition(long x, long y ) const
1011 {
1012     if ( IsSingleLine() )
1013         return 0;
1014
1015     GtkTextIter iter;
1016     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1017         return -1;
1018
1019     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1020     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1021         return -1;
1022
1023     return gtk_text_iter_get_offset(&iter) + x;
1024 }
1025
1026 int wxTextCtrl::GetLineLength(long lineNo) const
1027 {
1028     if ( IsMultiLine() )
1029     {
1030         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1031         if (lineNo > last_line)
1032             return -1;
1033
1034         GtkTextIter iter;
1035         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1036         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1037         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1038     }
1039     else
1040     {
1041         wxString str = GetLineText (lineNo);
1042         return (int) str.length();
1043     }
1044 }
1045
1046 int wxTextCtrl::GetNumberOfLines() const
1047 {
1048     if ( IsMultiLine() )
1049     {
1050         GtkTextIter iter;
1051         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, 0 );
1052
1053         // move forward by one display line until the end is reached
1054         int lineCount = 1;
1055         while ( gtk_text_view_forward_display_line(GTK_TEXT_VIEW(m_text), &iter) )
1056         {
1057             lineCount++;
1058         }
1059
1060         // If the last character in the text buffer is a newline,
1061         // gtk_text_view_forward_display_line() will return false without that
1062         // line being counted. Must add one manually in that case.
1063         GtkTextIter lastCharIter;
1064         gtk_text_buffer_get_iter_at_offset
1065         (
1066             m_buffer,
1067             &lastCharIter,
1068             gtk_text_buffer_get_char_count(m_buffer) - 1
1069         );
1070         gchar lastChar = gtk_text_iter_get_char( &lastCharIter );
1071         if ( lastChar == wxT('\n') )
1072             lineCount++;
1073
1074         return lineCount;
1075     }
1076     else // single line
1077     {
1078         return 1;
1079     }
1080 }
1081
1082 void wxTextCtrl::SetInsertionPoint( long pos )
1083 {
1084     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1085
1086     if ( IsMultiLine() )
1087     {
1088         GtkTextIter iter;
1089         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1090         gtk_text_buffer_place_cursor( m_buffer, &iter );
1091         gtk_text_view_scroll_mark_onscreen
1092         (
1093             GTK_TEXT_VIEW(m_text),
1094             gtk_text_buffer_get_insert( m_buffer )
1095         );
1096     }
1097     else
1098     {
1099         // FIXME: Is the editable's cursor really uptodate without double set_position in GTK2?
1100         gtk_editable_set_position(GTK_EDITABLE(m_text), int(pos));
1101     }
1102 }
1103
1104 void wxTextCtrl::SetInsertionPointEnd()
1105 {
1106     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1107
1108     if ( IsMultiLine() )
1109     {
1110         GtkTextIter end;
1111         gtk_text_buffer_get_end_iter( m_buffer, &end );
1112         gtk_text_buffer_place_cursor( m_buffer, &end );
1113     }
1114     else
1115     {
1116         gtk_editable_set_position( GTK_EDITABLE(m_text), -1 );
1117     }
1118 }
1119
1120 void wxTextCtrl::SetEditable( bool editable )
1121 {
1122     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1123
1124     if ( IsMultiLine() )
1125     {
1126         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1127     }
1128     else
1129     {
1130         gtk_editable_set_editable( GTK_EDITABLE(m_text), editable );
1131     }
1132 }
1133
1134 bool wxTextCtrl::Enable( bool enable )
1135 {
1136     if (!wxWindowBase::Enable(enable))
1137     {
1138         // nothing to do
1139         return false;
1140     }
1141
1142     if ( IsMultiLine() )
1143     {
1144         SetEditable( enable );
1145     }
1146     else
1147     {
1148         gtk_widget_set_sensitive( m_text, enable );
1149     }
1150
1151     return true;
1152 }
1153
1154 // wxGTK-specific: called recursively by Enable,
1155 // to give widgets an oppprtunity to correct their colours after they
1156 // have been changed by Enable
1157 void wxTextCtrl::OnParentEnable( bool enable )
1158 {
1159     // If we have a custom background colour, we use this colour in both
1160     // disabled and enabled mode, or we end up with a different colour under the
1161     // text.
1162     wxColour oldColour = GetBackgroundColour();
1163     if (oldColour.Ok())
1164     {
1165         // Need to set twice or it'll optimize the useful stuff out
1166         if (oldColour == * wxWHITE)
1167             SetBackgroundColour(*wxBLACK);
1168         else
1169             SetBackgroundColour(*wxWHITE);
1170         SetBackgroundColour(oldColour);
1171     }
1172 }
1173
1174 void wxTextCtrl::MarkDirty()
1175 {
1176     m_modified = true;
1177 }
1178
1179 void wxTextCtrl::DiscardEdits()
1180 {
1181     m_modified = false;
1182 }
1183
1184 // ----------------------------------------------------------------------------
1185 // max text length support
1186 // ----------------------------------------------------------------------------
1187
1188 bool wxTextCtrl::IgnoreTextUpdate()
1189 {
1190     if ( m_ignoreNextUpdate )
1191     {
1192         m_ignoreNextUpdate = false;
1193
1194         return true;
1195     }
1196
1197     return false;
1198 }
1199
1200 bool wxTextCtrl::MarkDirtyOnChange()
1201 {
1202     if ( m_dontMarkDirty )
1203     {
1204         m_dontMarkDirty = false;
1205
1206         return false;
1207     }
1208
1209     return true;
1210 }
1211
1212 void wxTextCtrl::SetMaxLength(unsigned long len)
1213 {
1214     if ( !HasFlag(wxTE_MULTILINE) )
1215     {
1216         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
1217
1218         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
1219         // we had tried to enter more text than allowed by max text length and
1220         // the text wasn't really changed
1221         //
1222         // to detect this and generate TEXT_MAXLEN event instead of
1223         // TEXT_CHANGED one in this case we also catch "insert_text" signal
1224         //
1225         // when max len is set to 0 we disconnect our handler as it means that
1226         // we shouldn't check anything any more
1227         if ( len )
1228         {
1229             g_signal_connect (m_text, "insert_text",
1230                               G_CALLBACK (gtk_insert_text_callback), this);
1231         }
1232         else // no checking
1233         {
1234             g_signal_handlers_disconnect_by_func (m_text,
1235                     (gpointer) gtk_insert_text_callback, this);
1236         }
1237     }
1238 }
1239
1240 void wxTextCtrl::SetSelection( long from, long to )
1241 {
1242     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1243
1244     if (from == -1 && to == -1)
1245     {
1246         from = 0;
1247         to = GetValue().length();
1248     }
1249
1250     if ( IsMultiLine() )
1251     {
1252         GtkTextIter fromi, toi;
1253         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1254         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1255
1256         gtk_text_buffer_place_cursor( m_buffer, &toi );
1257         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1258     }
1259     else
1260     {
1261         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1262     }
1263 }
1264
1265 void wxTextCtrl::ShowPosition( long pos )
1266 {
1267     if ( IsMultiLine() )
1268     {
1269         GtkTextIter iter;
1270         gtk_text_buffer_get_start_iter( m_buffer, &iter );
1271         gtk_text_iter_set_offset( &iter, pos );
1272         GtkTextMark *mark = gtk_text_buffer_create_mark( m_buffer, NULL, &iter, TRUE );
1273         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1274     }
1275 }
1276
1277 wxTextCtrlHitTestResult
1278 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1279 {
1280     if ( !IsMultiLine() )
1281     {
1282         // not supported
1283         return wxTE_HT_UNKNOWN;
1284     }
1285
1286     int x, y;
1287     gtk_text_view_window_to_buffer_coords
1288     (
1289         GTK_TEXT_VIEW(m_text),
1290         GTK_TEXT_WINDOW_TEXT,
1291         pt.x, pt.y,
1292         &x, &y
1293     );
1294
1295     GtkTextIter iter;
1296     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1297     if ( pos )
1298         *pos = gtk_text_iter_get_offset(&iter);
1299
1300     return wxTE_HT_ON_TEXT;
1301 }
1302
1303 long wxTextCtrl::GetInsertionPoint() const
1304 {
1305     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1306
1307     if ( IsMultiLine() )
1308     {
1309         // There is no direct accessor for the cursor, but
1310         // internally, the cursor is the "mark" called
1311         // "insert" in the text view's btree structure.
1312
1313         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1314         GtkTextIter cursor;
1315         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1316
1317         return gtk_text_iter_get_offset( &cursor );
1318     }
1319     else
1320     {
1321         return (long) gtk_editable_get_position(GTK_EDITABLE(m_text));
1322     }
1323 }
1324
1325 wxTextPos wxTextCtrl::GetLastPosition() const
1326 {
1327     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1328
1329     int pos = 0;
1330
1331     if ( IsMultiLine() )
1332     {
1333         GtkTextIter end;
1334         gtk_text_buffer_get_end_iter( m_buffer, &end );
1335
1336         pos = gtk_text_iter_get_offset( &end );
1337     }
1338     else
1339     {
1340         pos = GTK_ENTRY(m_text)->text_length;
1341     }
1342
1343     return (long)pos;
1344 }
1345
1346 void wxTextCtrl::Remove( long from, long to )
1347 {
1348     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1349
1350     if ( IsMultiLine() )
1351     {
1352         GtkTextIter fromi, toi;
1353         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1354         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1355
1356         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1357     }
1358     else // single line
1359         gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1360 }
1361
1362 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1363 {
1364     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1365
1366     Remove( from, to );
1367
1368     if (!value.empty())
1369     {
1370         SetInsertionPoint( from );
1371         WriteText( value );
1372     }
1373 }
1374
1375 void wxTextCtrl::Cut()
1376 {
1377     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1378
1379     if ( IsMultiLine() )
1380         g_signal_emit_by_name (m_text, "cut-clipboard");
1381     else
1382         gtk_editable_cut_clipboard(GTK_EDITABLE(m_text));
1383 }
1384
1385 void wxTextCtrl::Copy()
1386 {
1387     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1388
1389     if ( IsMultiLine() )
1390         g_signal_emit_by_name (m_text, "copy-clipboard");
1391     else
1392         gtk_editable_copy_clipboard(GTK_EDITABLE(m_text));
1393 }
1394
1395 void wxTextCtrl::Paste()
1396 {
1397     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1398
1399     if ( IsMultiLine() )
1400         g_signal_emit_by_name (m_text, "paste-clipboard");
1401     else
1402         gtk_editable_paste_clipboard(GTK_EDITABLE(m_text));
1403 }
1404
1405 // Undo/redo
1406 void wxTextCtrl::Undo()
1407 {
1408     // TODO
1409     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1410 }
1411
1412 void wxTextCtrl::Redo()
1413 {
1414     // TODO
1415     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1416 }
1417
1418 bool wxTextCtrl::CanUndo() const
1419 {
1420     // TODO
1421     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1422     return false;
1423 }
1424
1425 bool wxTextCtrl::CanRedo() const
1426 {
1427     // TODO
1428     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1429     return false;
1430 }
1431
1432 // If the return values from and to are the same, there is no
1433 // selection.
1434 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1435 {
1436     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1437
1438     gint from = -1;
1439     gint to = -1;
1440     bool haveSelection = false;
1441
1442      if ( IsMultiLine() )
1443      {
1444          GtkTextIter ifrom, ito;
1445          if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1446          {
1447              haveSelection = true;
1448              from = gtk_text_iter_get_offset(&ifrom);
1449              to = gtk_text_iter_get_offset(&ito);
1450          }
1451      }
1452      else  // not multi-line
1453      {
1454          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1455                                                  &from, &to) )
1456          {
1457              haveSelection = true;
1458          }
1459      }
1460
1461      if (! haveSelection )
1462           from = to = GetInsertionPoint();
1463
1464      if ( from > to )
1465      {
1466          // exchange them to be compatible with wxMSW
1467          gint tmp = from;
1468          from = to;
1469          to = tmp;
1470      }
1471
1472     if ( fromOut )
1473         *fromOut = from;
1474     if ( toOut )
1475         *toOut = to;
1476 }
1477
1478
1479 bool wxTextCtrl::IsEditable() const
1480 {
1481     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1482
1483     if ( IsMultiLine() )
1484     {
1485         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1486     }
1487     else
1488     {
1489         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1490     }
1491 }
1492
1493 bool wxTextCtrl::IsModified() const
1494 {
1495     return m_modified;
1496 }
1497
1498 void wxTextCtrl::Clear()
1499 {
1500     SetValue( wxEmptyString );
1501 }
1502
1503 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1504 {
1505     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1506
1507     if ( key_event.GetKeyCode() == WXK_RETURN )
1508     {
1509         if ( HasFlag(wxTE_PROCESS_ENTER) )
1510         {
1511             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1512             event.SetEventObject(this);
1513             event.SetString(GetValue());
1514             if ( GetEventHandler()->ProcessEvent(event) )
1515                 return;
1516         }
1517
1518         // FIXME: this is not the right place to do it, wxDialog::OnCharHook()
1519         //        probably is
1520         if ( IsSingleLine() )
1521         {
1522             // This will invoke the dialog default action, such
1523             // as the clicking the default button.
1524
1525             wxWindow *top_frame = m_parent;
1526             while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1527                 top_frame = top_frame->GetParent();
1528
1529             if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1530             {
1531                 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1532
1533                 if (window->default_widget)
1534                 {
1535                     gtk_widget_activate (window->default_widget);
1536                     return;
1537                 }
1538             }
1539         }
1540     }
1541
1542     key_event.Skip();
1543 }
1544
1545 GtkWidget* wxTextCtrl::GetConnectWidget()
1546 {
1547     return GTK_WIDGET(m_text);
1548 }
1549
1550 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1551 {
1552     if ( IsMultiLine() )
1553     {
1554         return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT );  // pure guesswork
1555     }
1556     else
1557     {
1558         return (window == GTK_ENTRY(m_text)->text_area);
1559     }
1560 }
1561
1562 // the font will change for subsequent text insertiongs
1563 bool wxTextCtrl::SetFont( const wxFont &font )
1564 {
1565     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1566
1567     if ( !wxTextCtrlBase::SetFont(font) )
1568     {
1569         // font didn't change, nothing to do
1570         return false;
1571     }
1572
1573     if ( IsMultiLine() )
1574     {
1575         SetUpdateFont(true);
1576
1577         m_defaultStyle.SetFont(font);
1578
1579         ChangeFontGlobally();
1580     }
1581
1582     return true;
1583 }
1584
1585 void wxTextCtrl::ChangeFontGlobally()
1586 {
1587     // this method is very inefficient and hence should be called as rarely as
1588     // possible!
1589     //
1590     // TODO: it can be implemented much more efficiently for GTK2
1591     wxASSERT_MSG( IsMultiLine(),
1592                   _T("shouldn't be called for single line controls") );
1593
1594     wxString value = GetValue();
1595     if ( !value.empty() )
1596     {
1597         SetUpdateFont(false);
1598
1599         Clear();
1600         AppendText(value);
1601     }
1602 }
1603
1604 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1605 {
1606     if ( !wxControl::SetForegroundColour(colour) )
1607         return false;
1608
1609     // update default fg colour too
1610     m_defaultStyle.SetTextColour(colour);
1611
1612     return true;
1613 }
1614
1615 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1616 {
1617     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1618
1619     if ( !wxControl::SetBackgroundColour( colour ) )
1620         return false;
1621
1622     if (!m_backgroundColour.Ok())
1623         return false;
1624
1625     // change active background color too
1626     m_defaultStyle.SetBackgroundColour( colour );
1627
1628     return true;
1629 }
1630
1631 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1632 {
1633     if ( IsMultiLine() )
1634     {
1635         if ( style.IsDefault() )
1636         {
1637             // nothing to do
1638             return true;
1639         }
1640
1641         gint l = gtk_text_buffer_get_char_count( m_buffer );
1642
1643         wxCHECK_MSG( start >= 0 && end <= l, false,
1644                      _T("invalid range in wxTextCtrl::SetStyle") );
1645
1646         GtkTextIter starti, endi;
1647         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1648         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1649
1650         // use the attributes from style which are set in it and fall back
1651         // first to the default style and then to the text control default
1652         // colours for the others
1653         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1654
1655         wxGtkTextApplyTagsFromAttr( m_buffer, attr, &starti, &endi );
1656
1657         return true;
1658     }
1659
1660     // else single line
1661     // cannot do this for GTK+'s Entry widget
1662     return false;
1663 }
1664
1665 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1666 {
1667     gtk_widget_modify_style(m_text, style);
1668 }
1669
1670 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1671 {
1672     Cut();
1673 }
1674
1675 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1676 {
1677     Copy();
1678 }
1679
1680 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1681 {
1682     Paste();
1683 }
1684
1685 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1686 {
1687     Undo();
1688 }
1689
1690 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1691 {
1692     Redo();
1693 }
1694
1695 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1696 {
1697     event.Enable( CanCut() );
1698 }
1699
1700 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1701 {
1702     event.Enable( CanCopy() );
1703 }
1704
1705 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1706 {
1707     event.Enable( CanPaste() );
1708 }
1709
1710 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1711 {
1712     event.Enable( CanUndo() );
1713 }
1714
1715 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1716 {
1717     event.Enable( CanRedo() );
1718 }
1719
1720 void wxTextCtrl::OnInternalIdle()
1721 {
1722     // Check if we have to show window now
1723     if (GtkShowFromOnIdle()) return;
1724
1725     if (g_delayedFocus == this)
1726     {
1727         if (GTK_WIDGET_REALIZED(m_widget))
1728         {
1729             gtk_widget_grab_focus( m_widget );
1730             g_delayedFocus = NULL;
1731         }
1732     }
1733
1734     if (wxUpdateUIEvent::CanUpdate(this))
1735         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1736 }
1737
1738 wxSize wxTextCtrl::DoGetBestSize() const
1739 {
1740     // FIXME should be different for multi-line controls...
1741     wxSize ret( wxControl::DoGetBestSize() );
1742     wxSize best(80, ret.y);
1743     CacheBestSize(best);
1744     return best;
1745 }
1746
1747 // ----------------------------------------------------------------------------
1748 // freeze/thaw
1749 // ----------------------------------------------------------------------------
1750
1751 void wxTextCtrl::Freeze()
1752 {
1753     if ( HasFlag(wxTE_MULTILINE) )
1754     {
1755         if ( !m_frozenness++ )
1756         {
1757             // freeze textview updates and remove buffer
1758             g_signal_connect (m_text, "expose_event",
1759                               G_CALLBACK (gtk_text_exposed_callback), this);
1760             g_signal_connect (m_widget, "expose_event",
1761                               G_CALLBACK (gtk_text_exposed_callback), this);
1762             gtk_widget_set_sensitive(m_widget, false);
1763             g_object_ref(m_buffer);
1764             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), gtk_text_buffer_new(NULL));
1765         }
1766     }
1767 }
1768
1769 void wxTextCtrl::Thaw()
1770 {
1771     if ( HasFlag(wxTE_MULTILINE) )
1772     {
1773         wxASSERT_MSG( m_frozenness > 0, _T("Thaw() without matching Freeze()") );
1774
1775         if ( !--m_frozenness )
1776         {
1777             // Reattach buffer and thaw textview updates
1778             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1779             g_object_unref(m_buffer);
1780             gtk_widget_set_sensitive(m_widget, true);
1781             g_signal_handlers_disconnect_by_func (m_widget,
1782                     (gpointer) gtk_text_exposed_callback, this);
1783             g_signal_handlers_disconnect_by_func (m_text,
1784                     (gpointer) gtk_text_exposed_callback, this);
1785         }
1786     }
1787 }
1788
1789 // ----------------------------------------------------------------------------
1790 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1791 // ----------------------------------------------------------------------------
1792
1793 // FIXME: when dragging on a link the sample gets an "Unknown event".
1794 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1795 // a buggy sample, or something else
1796 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1797 {
1798     event.Skip();
1799     if( !HasFlag(wxTE_AUTO_URL) )
1800         return;
1801
1802     gint x, y;
1803     GtkTextIter start, end;
1804     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1805                                                 "wxUrl");
1806
1807     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1808                                           event.GetX(), event.GetY(), &x, &y);
1809
1810     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1811     if (!gtk_text_iter_has_tag(&end, tag))
1812     {
1813         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1814                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1815         return;
1816     }
1817
1818     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1819                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1820
1821     start = end;
1822     if(!gtk_text_iter_begins_tag(&start, tag))
1823         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1824     if(!gtk_text_iter_ends_tag(&end, tag))
1825         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1826
1827     // Native context menu is probably not desired on an URL.
1828     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1829     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1830         event.Skip(false);
1831
1832     wxTextUrlEvent url_event(m_windowId, event,
1833                              gtk_text_iter_get_offset(&start),
1834                              gtk_text_iter_get_offset(&end));
1835
1836     InitCommandEvent(url_event);
1837     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1838     //event.Skip(!GetEventHandler()->ProcessEvent(url_event));
1839     GetEventHandler()->ProcessEvent(url_event);
1840 }
1841
1842 // static
1843 wxVisualAttributes
1844 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1845 {
1846     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1847 }