src/gtk/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin, 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 #include "wx/utils.h"
  15 #include "wx/intl.h"
  16 #include "wx/log.h"
  17 #include "wx/math.h"
  18 #include "wx/settings.h"
  19 #include "wx/panel.h"
  20 #include "wx/strconv.h"
  21 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  22
  23 #include <sys/types.h>
  24 #include <sys/stat.h>
  25 #include <ctype.h>
  26 #include "wx/math.h"
  27
  28 #include "wx/gtk/private.h"
  29 #include <gdk/gdkkeysyms.h>
  30
  31 //-----------------------------------------------------------------------------
  32 // idle system
  33 //-----------------------------------------------------------------------------
  34
  35 extern void wxapp_install_idle_handler();
  36 extern bool g_isIdle;
  37
  38 //-----------------------------------------------------------------------------
  39 // data
  40 //-----------------------------------------------------------------------------
  41
  42 extern wxCursor   g_globalCursor;
  43 extern wxWindowGTK *g_delayedFocus;
  44
  45 // ----------------------------------------------------------------------------
  46 // helpers
  47 // ----------------------------------------------------------------------------
  48
  49 extern "C" {
  50 static void wxGtkOnRemoveTag(GtkTextBuffer *buffer,
  51                              GtkTextTag *tag,
  52                              GtkTextIter *start,
  53                              GtkTextIter *end,
  54                              char *prefix)
  55 {
  56     gchar *name;
  57     g_object_get (tag, "name", &name, NULL);
  58
  59     if (!name || strncmp(name, prefix, strlen(prefix)))
  60         // anonymous tag or not starting with prefix - don't remove
  61         g_signal_stop_emission_by_name (buffer, "remove_tag");
  62
  63     g_free(name);
  64 }
  65 }
  66
  67 extern "C" {
  68 static void wxGtkTextApplyTagsFromAttr(GtkTextBuffer *text_buffer,
  69                                        const wxTextAttr& attr,
  70                                        GtkTextIter *start,
  71                                        GtkTextIter *end)
  72 {
  73     static gchar buf[1024];
  74     GtkTextTag *tag;
  75
  76     gulong remove_handler_id = g_signal_connect (text_buffer, "remove_tag",
  77             G_CALLBACK (wxGtkOnRemoveTag), gpointer("WX"));
  78     gtk_text_buffer_remove_all_tags(text_buffer, start, end);
  79     g_signal_handler_disconnect (text_buffer, remove_handler_id);
  80
  81     if (attr.HasFont())
  82     {
  83         char *font_string;
  84         PangoFontDescription *font_description = attr.GetFont().GetNativeFontInfo()->description;
  85         font_string = pango_font_description_to_string(font_description);
  86         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string);
  87         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  88                                          buf );
  89         if (!tag)
  90             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  91                                               "font-desc", font_description,
  92                                               NULL );
  93         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  94         g_free (font_string);
  95     }
  96
  97     if (attr.HasTextColour())
  98     {
  99         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         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     win->SetModified();
 449
 450     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
 451     event.SetEventObject( win );
 452     win->GetEventHandler()->ProcessEvent( event );
 453 }
 454 }
 455
 456 //-----------------------------------------------------------------------------
 457 // "expose_event" from scrolled window and textview
 458 //-----------------------------------------------------------------------------
 459
 460 extern "C" {
 461 static gboolean
 462 gtk_text_exposed_callback( GtkWidget *widget, GdkEventExpose *event, wxTextCtrl *win )
 463 {
 464     return TRUE;
 465 }
 466 }
 467
 468
 469 //-----------------------------------------------------------------------------
 470 //  wxTextCtrl
 471 //-----------------------------------------------------------------------------
 472
 473 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
 474
 475 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 476     EVT_CHAR(wxTextCtrl::OnChar)
 477
 478     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 479     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 480     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 481     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 482     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 483
 484     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 485     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 486     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 487     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 488     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 489
 490     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 491     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 492     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 493     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 494     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 495     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 496     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 497     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 498     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 499 END_EVENT_TABLE()
 500
 501 void wxTextCtrl::Init()
 502 {
 503     m_ignoreNextUpdate =
 504     m_modified = false;
 505     SetUpdateFont(false);
 506     m_text =
 507     m_vScrollbar = (GtkWidget *)NULL;
 508     m_frozenness = 0;
 509     m_gdkHandCursor = NULL;
 510     m_gdkXTermCursor = NULL;
 511 }
 512
 513 wxTextCtrl::~wxTextCtrl()
 514 {
 515     if(m_gdkHandCursor)
 516         gdk_cursor_unref(m_gdkHandCursor);
 517     if(m_gdkXTermCursor)
 518         gdk_cursor_unref(m_gdkXTermCursor);
 519 }
 520
 521 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 522                         wxWindowID id,
 523                         const wxString &value,
 524                         const wxPoint &pos,
 525                         const wxSize &size,
 526                         long style,
 527                         const wxValidator& validator,
 528                         const wxString &name )
 529 {
 530     Init();
 531
 532     Create( parent, id, value, pos, size, style, validator, name );
 533 }
 534
 535 bool wxTextCtrl::Create( wxWindow *parent,
 536                          wxWindowID id,
 537                          const wxString &value,
 538                          const wxPoint &pos,
 539                          const wxSize &size,
 540                          long style,
 541                          const wxValidator& validator,
 542                          const wxString &name )
 543 {
 544     m_needParent = true;
 545     m_acceptsFocus = true;
 546
 547     if (!PreCreation( parent, pos, size ) ||
 548         !CreateBase( parent, id, pos, size, style, validator, name ))
 549     {
 550         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 551         return false;
 552     }
 553
 554
 555     m_vScrollbarVisible = false;
 556
 557     bool multi_line = (style & wxTE_MULTILINE) != 0;
 558
 559     if (multi_line)
 560     {
 561         // Create view
 562         m_text = gtk_text_view_new();
 563
 564         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 565
 566         // create scrolled window
 567         m_widget = gtk_scrolled_window_new( NULL, NULL );
 568         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 569                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 570
 571         // Insert view into scrolled window
 572         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 573
 574         // translate wx wrapping style to GTK+
 575         GtkWrapMode wrap;
 576         if ( HasFlag( wxTE_DONTWRAP ) )
 577             wrap = GTK_WRAP_NONE;
 578         else if ( HasFlag( wxTE_CHARWRAP ) )
 579             wrap = GTK_WRAP_CHAR;
 580         else if ( HasFlag( wxTE_WORDWRAP ) )
 581             wrap = GTK_WRAP_WORD;
 582         else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 583         {
 584             // GTK_WRAP_WORD_CHAR seems to be new in GTK+ 2.4
 585 #ifdef __WXGTK24__
 586             if ( !gtk_check_version(2,4,0) )
 587             {
 588                 wrap = GTK_WRAP_WORD_CHAR;
 589             }
 590             else
 591 #endif
 592             wrap = GTK_WRAP_WORD;
 593         }
 594
 595         gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 596
 597         if (!HasFlag(wxNO_BORDER))
 598             gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(m_widget), GTK_SHADOW_IN );
 599
 600         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 601
 602         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 603     }
 604     else
 605     {
 606         // a single-line text control: no need for scrollbars
 607         m_widget =
 608         m_text = gtk_entry_new();
 609
 610         if (style & wxNO_BORDER)
 611             g_object_set( GTK_ENTRY(m_text), "has-frame", FALSE, NULL );
 612     }
 613
 614     m_parent->DoAddChild( this );
 615
 616     m_focusWidget = m_text;
 617
 618     PostCreation(size);
 619
 620     if (multi_line)
 621     {
 622         gtk_widget_show(m_text);
 623         SetVScrollAdjustment(gtk_scrolled_window_get_vadjustment((GtkScrolledWindow*)m_widget));
 624     }
 625
 626     if (!value.empty())
 627     {
 628         SetValue( value );
 629     }
 630
 631     if (style & wxTE_PASSWORD)
 632     {
 633         if (!multi_line)
 634             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 635     }
 636
 637     if (style & wxTE_READONLY)
 638     {
 639         if (!multi_line)
 640             gtk_editable_set_editable( GTK_EDITABLE(m_text), FALSE );
 641         else
 642             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 643     }
 644
 645     if (multi_line)
 646     {
 647         if (style & wxTE_RIGHT)
 648             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_RIGHT );
 649         else if (style & wxTE_CENTRE)
 650             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_CENTER );
 651         // Left justify (alignment) is the default and we don't need to apply GTK_JUSTIFY_LEFT
 652     }
 653     else
 654     {
 655 #ifdef __WXGTK24__
 656         // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 657         if (!gtk_check_version(2,4,0))
 658         {
 659             if (style & wxTE_RIGHT)
 660                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 1.0 );
 661             else if (style & wxTE_CENTRE)
 662                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 0.5 );
 663         }
 664 #endif
 665     }
 666
 667     // We want to be notified about text changes.
 668     if (multi_line)
 669     {
 670         g_signal_connect (m_buffer, "changed",
 671                           G_CALLBACK (gtk_text_changed_callback), this);
 672
 673         // .. and handle URLs on multi-line controls with wxTE_AUTO_URL style
 674         if (style & wxTE_AUTO_URL)
 675         {
 676             GtkTextIter start, end;
 677             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 678             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 679
 680             // We create our wxUrl tag here for slight efficiency gain - we
 681             // don't have to check for the tag existance in callbacks,
 682             // hereby it's guaranteed to exist.
 683             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 684                                        "foreground", "blue",
 685                                        "underline", PANGO_UNDERLINE_SINGLE,
 686                                        NULL);
 687
 688             // Check for URLs after each text change
 689             g_signal_connect_after (m_buffer, "insert_text",
 690                                     G_CALLBACK (au_insert_text_callback), this);
 691             g_signal_connect_after (m_buffer, "delete_range",
 692                                     G_CALLBACK (au_delete_range_callback), this);
 693
 694             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 695             // block this callback temporarily. This takes care of gtk+ internal
 696             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 697             // which is undesired because only a part of the URL might be copied.
 698             // The insert-text signal emitted inside it will take care of newly formed
 699             // or wholly copied URLs.
 700             g_signal_connect (m_buffer, "apply_tag",
 701                               G_CALLBACK (au_apply_tag_callback), NULL);
 702
 703             // Check for URLs in the initial string passed to Create
 704             gtk_text_buffer_get_start_iter(m_buffer, &start);
 705             gtk_text_buffer_get_end_iter(m_buffer, &end);
 706             au_check_range(&start, &end);
 707         }
 708     }
 709     else
 710     {
 711         g_signal_connect (m_text, "changed",
 712                           G_CALLBACK (gtk_text_changed_callback), this);
 713     }
 714
 715     m_cursor = wxCursor( wxCURSOR_IBEAM );
 716
 717     wxTextAttr attrDef(GetForegroundColour(), GetBackgroundColour(), GetFont());
 718     SetDefaultStyle( attrDef );
 719
 720     return true;
 721 }
 722
 723
 724 void wxTextCtrl::CalculateScrollbar()
 725 {
 726 }
 727
 728 wxString wxTextCtrl::GetValue() const
 729 {
 730     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 731
 732     wxString tmp;
 733     if (m_windowStyle & wxTE_MULTILINE)
 734     {
 735         GtkTextIter start;
 736         gtk_text_buffer_get_start_iter( m_buffer, &start );
 737         GtkTextIter end;
 738         gtk_text_buffer_get_end_iter( m_buffer, &end );
 739         gchar *text = gtk_text_buffer_get_text( m_buffer, &start, &end, TRUE );
 740
 741 #if wxUSE_UNICODE
 742         wxWCharBuffer buffer( wxConvUTF8.cMB2WX( text ) );
 743 #else
 744         wxCharBuffer buffer( wxConvLocal.cWC2WX( wxConvUTF8.cMB2WC( text ) ) );
 745 #endif
 746         if ( buffer )
 747             tmp = buffer;
 748
 749         g_free( text );
 750     }
 751     else
 752     {
 753         tmp = wxGTK_CONV_BACK( gtk_entry_get_text( GTK_ENTRY(m_text) ) );
 754     }
 755
 756     return tmp;
 757 }
 758
 759 void wxTextCtrl::SetValue( const wxString &value )
 760 {
 761     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 762
 763     if (m_windowStyle & wxTE_MULTILINE)
 764     {
 765 #if wxUSE_UNICODE
 766         wxCharBuffer buffer( wxConvUTF8.cWX2MB( value) );
 767 #else
 768         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( value ) ) );
 769 #endif
 770         if (gtk_text_buffer_get_char_count(m_buffer) != 0)
 771             IgnoreNextTextUpdate();
 772
 773         if ( !buffer )
 774         {
 775             // what else can we do? at least don't crash...
 776             return;
 777         }
 778
 779         gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 780     }
 781     else
 782     {
 783         gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV( value ) );
 784     }
 785
 786     // GRG, Jun/2000: Changed this after a lot of discussion in
 787     //   the lists. wxWidgets 2.2 will have a set of flags to
 788     //   customize this behaviour.
 789     SetInsertionPoint(0);
 790
 791     m_modified = false;
 792 }
 793
 794 void wxTextCtrl::WriteText( const wxString &text )
 795 {
 796     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 797
 798     if ( text.empty() )
 799         return;
 800
 801     // gtk_text_changed_callback() will set m_modified to true but m_modified
 802     // shouldn't be changed by the program writing to the text control itself,
 803     // so save the old value and restore when we're done
 804     bool oldModified = m_modified;
 805
 806     if ( m_windowStyle & wxTE_MULTILINE )
 807     {
 808 #if wxUSE_UNICODE
 809         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 810 #else
 811         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 812 #endif
 813         if ( !buffer )
 814         {
 815             // what else can we do? at least don't crash...
 816             return;
 817         }
 818
 819         // TODO: Call whatever is needed to delete the selection.
 820         wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
 821
 822         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
 823         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
 824         if ( wxIsSameDouble(adj->value, adj->upper - adj->page_size) )
 825         {
 826             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
 827                     gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
 828         }
 829     }
 830     else // single line
 831     {
 832         // First remove the selection if there is one
 833         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 834
 835         // This moves the cursor pos to behind the inserted text.
 836         gint len = gtk_editable_get_position(GTK_EDITABLE(m_text));
 837
 838 #if wxUSE_UNICODE
 839         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 840 #else
 841         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 842 #endif
 843         if ( !buffer )
 844         {
 845             // what else can we do? at least don't crash...
 846             return;
 847         }
 848
 849         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 850
 851         // Bring entry's cursor uptodate.
 852         gtk_editable_set_position( GTK_EDITABLE(m_text), len );
 853     }
 854
 855     m_modified = oldModified;
 856 }
 857
 858 void wxTextCtrl::AppendText( const wxString &text )
 859 {
 860     SetInsertionPointEnd();
 861     WriteText( text );
 862 }
 863
 864 wxString wxTextCtrl::GetLineText( long lineNo ) const
 865 {
 866     if (m_windowStyle & wxTE_MULTILINE)
 867     {
 868         GtkTextIter line;
 869         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
 870         GtkTextIter end = line;
 871         gtk_text_iter_forward_to_line_end(&end);
 872         gchar *text = gtk_text_buffer_get_text(m_buffer,&line,&end,TRUE);
 873         wxString result(wxGTK_CONV_BACK(text));
 874         g_free(text);
 875         return result;
 876     }
 877     else
 878     {
 879         if (lineNo == 0) return GetValue();
 880         return wxEmptyString;
 881     }
 882 }
 883
 884 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 885 {
 886   /* If you implement this, don't forget to update the documentation!
 887    * (file docs/latex/wx/text.tex) */
 888     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 889 }
 890
 891 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 892 {
 893     if ( m_windowStyle & wxTE_MULTILINE )
 894     {
 895         GtkTextIter iter;
 896         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
 897         if (gtk_text_iter_is_end(&iter))
 898             return false;
 899
 900         *y = gtk_text_iter_get_line(&iter);
 901         *x = gtk_text_iter_get_line_offset(&iter);
 902     }
 903     else // single line control
 904     {
 905         if ( pos <= GTK_ENTRY(m_text)->text_length )
 906         {
 907             *y = 0;
 908             *x = pos;
 909         }
 910         else
 911         {
 912             // index out of bounds
 913             return false;
 914         }
 915     }
 916
 917     return true;
 918 }
 919
 920 long wxTextCtrl::XYToPosition(long x, long y ) const
 921 {
 922     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 923
 924     GtkTextIter iter;
 925     if (y >= gtk_text_buffer_get_line_count (m_buffer))
 926         return -1;
 927
 928     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
 929     if (x >= gtk_text_iter_get_chars_in_line (&iter))
 930         return -1;
 931
 932     return gtk_text_iter_get_offset(&iter) + x;
 933 }
 934
 935 int wxTextCtrl::GetLineLength(long lineNo) const
 936 {
 937     if (m_windowStyle & wxTE_MULTILINE)
 938     {
 939         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
 940         if (lineNo > last_line)
 941             return -1;
 942
 943         GtkTextIter iter;
 944         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
 945         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
 946         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
 947     }
 948     else
 949     {
 950         wxString str = GetLineText (lineNo);
 951         return (int) str.Length();
 952     }
 953 }
 954
 955 int wxTextCtrl::GetNumberOfLines() const
 956 {
 957     if (m_windowStyle & wxTE_MULTILINE)
 958         return gtk_text_buffer_get_line_count( m_buffer );
 959     else
 960         return 1;
 961 }
 962
 963 void wxTextCtrl::SetInsertionPoint( long pos )
 964 {
 965     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 966
 967     if ( IsMultiLine() )
 968     {
 969         GtkTextIter iter;
 970         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
 971         gtk_text_buffer_place_cursor( m_buffer, &iter );
 972         gtk_text_view_scroll_mark_onscreen
 973         (
 974             GTK_TEXT_VIEW(m_text),
 975             gtk_text_buffer_get_insert( m_buffer )
 976         );
 977     }
 978     else
 979     {
 980         // FIXME: Is the editable's cursor really uptodate without double set_position in GTK2?
 981         gtk_editable_set_position(GTK_EDITABLE(m_text), int(pos));
 982     }
 983 }
 984
 985 void wxTextCtrl::SetInsertionPointEnd()
 986 {
 987     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 988
 989     if (m_windowStyle & wxTE_MULTILINE)
 990     {
 991         GtkTextIter end;
 992         gtk_text_buffer_get_end_iter( m_buffer, &end );
 993         gtk_text_buffer_place_cursor( m_buffer, &end );
 994     }
 995     else
 996     {
 997         gtk_editable_set_position( GTK_EDITABLE(m_text), -1 );
 998     }
 999 }
1000
1001 void wxTextCtrl::SetEditable( bool editable )
1002 {
1003     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1004
1005     if (m_windowStyle & wxTE_MULTILINE)
1006     {
1007         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1008     }
1009     else
1010     {
1011         gtk_editable_set_editable( GTK_EDITABLE(m_text), editable );
1012     }
1013 }
1014
1015 bool wxTextCtrl::Enable( bool enable )
1016 {
1017     if (!wxWindowBase::Enable(enable))
1018     {
1019         // nothing to do
1020         return false;
1021     }
1022
1023     if (m_windowStyle & wxTE_MULTILINE)
1024     {
1025         SetEditable( enable );
1026     }
1027     else
1028     {
1029         gtk_widget_set_sensitive( m_text, enable );
1030     }
1031
1032     return true;
1033 }
1034
1035 // wxGTK-specific: called recursively by Enable,
1036 // to give widgets an oppprtunity to correct their colours after they
1037 // have been changed by Enable
1038 void wxTextCtrl::OnParentEnable( bool enable )
1039 {
1040     // If we have a custom background colour, we use this colour in both
1041     // disabled and enabled mode, or we end up with a different colour under the
1042     // text.
1043     wxColour oldColour = GetBackgroundColour();
1044     if (oldColour.Ok())
1045     {
1046         // Need to set twice or it'll optimize the useful stuff out
1047         if (oldColour == * wxWHITE)
1048             SetBackgroundColour(*wxBLACK);
1049         else
1050             SetBackgroundColour(*wxWHITE);
1051         SetBackgroundColour(oldColour);
1052     }
1053 }
1054
1055 void wxTextCtrl::MarkDirty()
1056 {
1057     m_modified = true;
1058 }
1059
1060 void wxTextCtrl::DiscardEdits()
1061 {
1062     m_modified = false;
1063 }
1064
1065 // ----------------------------------------------------------------------------
1066 // max text length support
1067 // ----------------------------------------------------------------------------
1068
1069 void wxTextCtrl::IgnoreNextTextUpdate()
1070 {
1071     m_ignoreNextUpdate = true;
1072 }
1073
1074 bool wxTextCtrl::IgnoreTextUpdate()
1075 {
1076     if ( m_ignoreNextUpdate )
1077     {
1078         m_ignoreNextUpdate = false;
1079
1080         return true;
1081     }
1082
1083     return false;
1084 }
1085
1086 void wxTextCtrl::SetMaxLength(unsigned long len)
1087 {
1088     if ( !HasFlag(wxTE_MULTILINE) )
1089     {
1090         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
1091
1092         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
1093         // we had tried to enter more text than allowed by max text length and
1094         // the text wasn't really changed
1095         //
1096         // to detect this and generate TEXT_MAXLEN event instead of
1097         // TEXT_CHANGED one in this case we also catch "insert_text" signal
1098         //
1099         // when max len is set to 0 we disconnect our handler as it means that
1100         // we shouldn't check anything any more
1101         if ( len )
1102         {
1103             g_signal_connect (m_text, "insert_text",
1104                               G_CALLBACK (gtk_insert_text_callback), this);
1105         }
1106         else // no checking
1107         {
1108             g_signal_handlers_disconnect_by_func (m_text,
1109                     (gpointer) gtk_insert_text_callback, this);
1110         }
1111     }
1112 }
1113
1114 void wxTextCtrl::SetSelection( long from, long to )
1115 {
1116     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1117
1118     if (from == -1 && to == -1)
1119     {
1120         from = 0;
1121         to = GetValue().Length();
1122     }
1123
1124     if (m_windowStyle & wxTE_MULTILINE)
1125     {
1126         GtkTextIter fromi, toi;
1127         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1128         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1129
1130         gtk_text_buffer_place_cursor( m_buffer, &toi );
1131         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1132     }
1133     else
1134     {
1135         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1136     }
1137 }
1138
1139 void wxTextCtrl::ShowPosition( long pos )
1140 {
1141     if (m_windowStyle & wxTE_MULTILINE)
1142     {
1143         GtkTextIter iter;
1144         gtk_text_buffer_get_start_iter( m_buffer, &iter );
1145         gtk_text_iter_set_offset( &iter, pos );
1146         GtkTextMark *mark = gtk_text_buffer_create_mark( m_buffer, NULL, &iter, TRUE );
1147         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1148     }
1149 }
1150
1151 wxTextCtrlHitTestResult
1152 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1153 {
1154     if ( !IsMultiLine() )
1155     {
1156         // not supported
1157         return wxTE_HT_UNKNOWN;
1158     }
1159
1160     int x, y;
1161     gtk_text_view_window_to_buffer_coords
1162     (
1163         GTK_TEXT_VIEW(m_text),
1164         GTK_TEXT_WINDOW_TEXT,
1165         pt.x, pt.y,
1166         &x, &y
1167     );
1168
1169     GtkTextIter iter;
1170     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1171     if ( pos )
1172         *pos = gtk_text_iter_get_offset(&iter);
1173
1174     return wxTE_HT_ON_TEXT;
1175 }
1176
1177 long wxTextCtrl::GetInsertionPoint() const
1178 {
1179     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1180
1181     if (m_windowStyle & wxTE_MULTILINE)
1182     {
1183         // There is no direct accessor for the cursor, but
1184         // internally, the cursor is the "mark" called
1185         // "insert" in the text view's btree structure.
1186
1187         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1188         GtkTextIter cursor;
1189         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1190
1191         return gtk_text_iter_get_offset( &cursor );
1192     }
1193     else
1194     {
1195         return (long) gtk_editable_get_position(GTK_EDITABLE(m_text));
1196     }
1197 }
1198
1199 wxTextPos wxTextCtrl::GetLastPosition() const
1200 {
1201     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1202
1203     int pos = 0;
1204
1205     if (m_windowStyle & wxTE_MULTILINE)
1206     {
1207         GtkTextIter end;
1208         gtk_text_buffer_get_end_iter( m_buffer, &end );
1209
1210         pos = gtk_text_iter_get_offset( &end );
1211     }
1212     else
1213     {
1214         pos = GTK_ENTRY(m_text)->text_length;
1215     }
1216
1217     return (long)pos;
1218 }
1219
1220 void wxTextCtrl::Remove( long from, long to )
1221 {
1222     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1223
1224     if (m_windowStyle & wxTE_MULTILINE)
1225     {
1226         GtkTextIter fromi, toi;
1227         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1228         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1229
1230         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1231     }
1232     else // single line
1233         gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1234 }
1235
1236 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1237 {
1238     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1239
1240     Remove( from, to );
1241
1242     if (!value.empty())
1243     {
1244         SetInsertionPoint( from );
1245         WriteText( value );
1246     }
1247 }
1248
1249 void wxTextCtrl::Cut()
1250 {
1251     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1252
1253     if (m_windowStyle & wxTE_MULTILINE)
1254         g_signal_emit_by_name (m_text, "cut-clipboard");
1255     else
1256         gtk_editable_cut_clipboard(GTK_EDITABLE(m_text));
1257 }
1258
1259 void wxTextCtrl::Copy()
1260 {
1261     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1262
1263     if (m_windowStyle & wxTE_MULTILINE)
1264         g_signal_emit_by_name (m_text, "copy-clipboard");
1265     else
1266         gtk_editable_copy_clipboard(GTK_EDITABLE(m_text));
1267 }
1268
1269 void wxTextCtrl::Paste()
1270 {
1271     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1272
1273     if (m_windowStyle & wxTE_MULTILINE)
1274         g_signal_emit_by_name (m_text, "paste-clipboard");
1275     else
1276         gtk_editable_paste_clipboard(GTK_EDITABLE(m_text));
1277 }
1278
1279 // Undo/redo
1280 void wxTextCtrl::Undo()
1281 {
1282     // TODO
1283     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1284 }
1285
1286 void wxTextCtrl::Redo()
1287 {
1288     // TODO
1289     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1290 }
1291
1292 bool wxTextCtrl::CanUndo() const
1293 {
1294     // TODO
1295     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1296     return false;
1297 }
1298
1299 bool wxTextCtrl::CanRedo() const
1300 {
1301     // TODO
1302     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1303     return false;
1304 }
1305
1306 // If the return values from and to are the same, there is no
1307 // selection.
1308 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1309 {
1310     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1311
1312     gint from = -1;
1313     gint to = -1;
1314     bool haveSelection = false;
1315
1316      if (m_windowStyle & wxTE_MULTILINE)
1317      {
1318          GtkTextIter ifrom, ito;
1319          if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1320          {
1321              haveSelection = true;
1322              from = gtk_text_iter_get_offset(&ifrom);
1323              to = gtk_text_iter_get_offset(&ito);
1324          }
1325      }
1326      else  // not multi-line
1327      {
1328          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1329                                                  &from, &to) )
1330          {
1331              haveSelection = true;
1332          }
1333      }
1334
1335      if (! haveSelection )
1336           from = to = GetInsertionPoint();
1337
1338      if ( from > to )
1339      {
1340          // exchange them to be compatible with wxMSW
1341          gint tmp = from;
1342          from = to;
1343          to = tmp;
1344      }
1345
1346     if ( fromOut )
1347         *fromOut = from;
1348     if ( toOut )
1349         *toOut = to;
1350 }
1351
1352
1353 bool wxTextCtrl::IsEditable() const
1354 {
1355     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1356
1357     if (m_windowStyle & wxTE_MULTILINE)
1358     {
1359         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1360     }
1361     else
1362     {
1363         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1364     }
1365 }
1366
1367 bool wxTextCtrl::IsModified() const
1368 {
1369     return m_modified;
1370 }
1371
1372 void wxTextCtrl::Clear()
1373 {
1374     SetValue( wxEmptyString );
1375 }
1376
1377 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1378 {
1379     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1380
1381     if ((key_event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1382     {
1383         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1384         event.SetEventObject(this);
1385         event.SetString(GetValue());
1386         if (GetEventHandler()->ProcessEvent(event)) return;
1387     }
1388
1389     if ((key_event.GetKeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1390     {
1391         // This will invoke the dialog default action, such
1392         // as the clicking the default button.
1393
1394         wxWindow *top_frame = m_parent;
1395         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1396             top_frame = top_frame->GetParent();
1397
1398         if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1399         {
1400             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1401
1402             if (window->default_widget)
1403             {
1404                 gtk_widget_activate (window->default_widget);
1405                 return;
1406             }
1407         }
1408     }
1409
1410     key_event.Skip();
1411 }
1412
1413 GtkWidget* wxTextCtrl::GetConnectWidget()
1414 {
1415     return GTK_WIDGET(m_text);
1416 }
1417
1418 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1419 {
1420     if (m_windowStyle & wxTE_MULTILINE)
1421     {
1422         return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT );  // pure guesswork
1423     }
1424     else
1425     {
1426         return (window == GTK_ENTRY(m_text)->text_area);
1427     }
1428 }
1429
1430 // the font will change for subsequent text insertiongs
1431 bool wxTextCtrl::SetFont( const wxFont &font )
1432 {
1433     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1434
1435     if ( !wxTextCtrlBase::SetFont(font) )
1436     {
1437         // font didn't change, nothing to do
1438         return false;
1439     }
1440
1441     if ( m_windowStyle & wxTE_MULTILINE )
1442     {
1443         SetUpdateFont(true);
1444
1445         m_defaultStyle.SetFont(font);
1446
1447         ChangeFontGlobally();
1448     }
1449
1450     return true;
1451 }
1452
1453 void wxTextCtrl::ChangeFontGlobally()
1454 {
1455     // this method is very inefficient and hence should be called as rarely as
1456     // possible!
1457     //
1458     // TODO: it can be implemented much more efficiently for GTK2
1459     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE),
1460                   _T("shouldn't be called for single line controls") );
1461
1462     wxString value = GetValue();
1463     if ( !value.empty() )
1464     {
1465         SetUpdateFont(false);
1466
1467         Clear();
1468         AppendText(value);
1469     }
1470 }
1471
1472 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1473 {
1474     if ( !wxControl::SetForegroundColour(colour) )
1475         return false;
1476
1477     // update default fg colour too
1478     m_defaultStyle.SetTextColour(colour);
1479
1480     return true;
1481 }
1482
1483 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1484 {
1485     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1486
1487     if ( !wxControl::SetBackgroundColour( colour ) )
1488         return false;
1489
1490     if (!m_backgroundColour.Ok())
1491         return false;
1492
1493     // change active background color too
1494     m_defaultStyle.SetBackgroundColour( colour );
1495
1496     return true;
1497 }
1498
1499 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1500 {
1501     if ( m_windowStyle & wxTE_MULTILINE )
1502     {
1503         if ( style.IsDefault() )
1504         {
1505             // nothing to do
1506             return true;
1507         }
1508
1509         gint l = gtk_text_buffer_get_char_count( m_buffer );
1510
1511         wxCHECK_MSG( start >= 0 && end <= l, false,
1512                      _T("invalid range in wxTextCtrl::SetStyle") );
1513
1514         GtkTextIter starti, endi;
1515         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1516         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1517
1518         // use the attributes from style which are set in it and fall back
1519         // first to the default style and then to the text control default
1520         // colours for the others
1521         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1522
1523         wxGtkTextApplyTagsFromAttr( m_buffer, attr, &starti, &endi );
1524
1525         return true;
1526     }
1527
1528     // else single line
1529     // cannot do this for GTK+'s Entry widget
1530     return false;
1531 }
1532
1533 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1534 {
1535     gtk_widget_modify_style(m_text, style);
1536 }
1537
1538 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1539 {
1540     Cut();
1541 }
1542
1543 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1544 {
1545     Copy();
1546 }
1547
1548 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1549 {
1550     Paste();
1551 }
1552
1553 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1554 {
1555     Undo();
1556 }
1557
1558 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1559 {
1560     Redo();
1561 }
1562
1563 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1564 {
1565     event.Enable( CanCut() );
1566 }
1567
1568 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1569 {
1570     event.Enable( CanCopy() );
1571 }
1572
1573 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1574 {
1575     event.Enable( CanPaste() );
1576 }
1577
1578 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1579 {
1580     event.Enable( CanUndo() );
1581 }
1582
1583 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1584 {
1585     event.Enable( CanRedo() );
1586 }
1587
1588 void wxTextCtrl::OnInternalIdle()
1589 {
1590     wxCursor cursor = m_cursor;
1591     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1592
1593     if (g_delayedFocus == this)
1594     {
1595         if (GTK_WIDGET_REALIZED(m_widget))
1596         {
1597             gtk_widget_grab_focus( m_widget );
1598             g_delayedFocus = NULL;
1599         }
1600     }
1601
1602     if (wxUpdateUIEvent::CanUpdate(this))
1603         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1604 }
1605
1606 wxSize wxTextCtrl::DoGetBestSize() const
1607 {
1608     // FIXME should be different for multi-line controls...
1609     wxSize ret( wxControl::DoGetBestSize() );
1610     wxSize best(80, ret.y);
1611     CacheBestSize(best);
1612     return best;
1613 }
1614
1615 // ----------------------------------------------------------------------------
1616 // freeze/thaw
1617 // ----------------------------------------------------------------------------
1618
1619 void wxTextCtrl::Freeze()
1620 {
1621     if ( HasFlag(wxTE_MULTILINE) )
1622     {
1623         if ( !m_frozenness++ )
1624         {
1625             // freeze textview updates and remove buffer
1626             g_signal_connect (m_text, "expose_event",
1627                               G_CALLBACK (gtk_text_exposed_callback), this);
1628             g_signal_connect (m_widget, "expose_event",
1629                               G_CALLBACK (gtk_text_exposed_callback), this);
1630             gtk_widget_set_sensitive(m_widget, false);
1631             g_object_ref(m_buffer);
1632             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), gtk_text_buffer_new(NULL));
1633         }
1634     }
1635 }
1636
1637 void wxTextCtrl::Thaw()
1638 {
1639     if ( HasFlag(wxTE_MULTILINE) )
1640     {
1641         wxASSERT_MSG( m_frozenness > 0, _T("Thaw() without matching Freeze()") );
1642
1643         if ( !--m_frozenness )
1644         {
1645             // Reattach buffer and thaw textview updates
1646             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1647             g_object_unref(m_buffer);
1648             gtk_widget_set_sensitive(m_widget, true);
1649             g_signal_handlers_disconnect_by_func (m_widget,
1650                     (gpointer) gtk_text_exposed_callback, this);
1651             g_signal_handlers_disconnect_by_func (m_text,
1652                     (gpointer) gtk_text_exposed_callback, this);
1653         }
1654     }
1655 }
1656
1657 // ----------------------------------------------------------------------------
1658 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1659 // ----------------------------------------------------------------------------
1660
1661 // FIXME: when dragging on a link the sample gets an "Unknown event".
1662 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1663 // a buggy sample, or something else
1664 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1665 {
1666     event.Skip();
1667     if(!(m_windowStyle & wxTE_AUTO_URL))
1668         return;
1669
1670     gint x, y;
1671     GtkTextIter start, end;
1672     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1673                                                 "wxUrl");
1674
1675     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1676                                           event.GetX(), event.GetY(), &x, &y);
1677
1678     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1679     if (!gtk_text_iter_has_tag(&end, tag))
1680     {
1681         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1682                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1683         return;
1684     }
1685
1686     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1687                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1688
1689     start = end;
1690     if(!gtk_text_iter_begins_tag(&start, tag))
1691         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1692     if(!gtk_text_iter_ends_tag(&end, tag))
1693         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1694
1695     // Native context menu is probably not desired on an URL.
1696     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1697     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1698         event.Skip(false);
1699
1700     wxTextUrlEvent url_event(m_windowId, event,
1701                              gtk_text_iter_get_offset(&start),
1702                              gtk_text_iter_get_offset(&end));
1703
1704     InitCommandEvent(url_event);
1705     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1706     //event.Skip(!GetEventHandler()->ProcessEvent(url_event));
1707     GetEventHandler()->ProcessEvent(url_event);
1708 }
1709
1710 // static
1711 wxVisualAttributes
1712 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1713 {
1714     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1715 }