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         gtk_widget_show(m_text);
 622
 623     if (!value.empty())
 624     {
 625         SetValue( value );
 626     }
 627
 628     if (style & wxTE_PASSWORD)
 629     {
 630         if (!multi_line)
 631             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 632     }
 633
 634     if (style & wxTE_READONLY)
 635     {
 636         if (!multi_line)
 637             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 638         else
 639             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 640     }
 641
 642     if (multi_line)
 643     {
 644         if (style & wxTE_RIGHT)
 645             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_RIGHT );
 646         else if (style & wxTE_CENTRE)
 647             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_CENTER );
 648         // Left justify (alignment) is the default and we don't need to apply GTK_JUSTIFY_LEFT
 649     }
 650     else
 651     {
 652 #ifdef __WXGTK24__
 653         // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 654         if (!gtk_check_version(2,4,0))
 655         {
 656             if (style & wxTE_RIGHT)
 657                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 1.0 );
 658             else if (style & wxTE_CENTRE)
 659                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 0.5 );
 660         }
 661 #endif
 662     }
 663
 664     // We want to be notified about text changes.
 665     if (multi_line)
 666     {
 667         g_signal_connect (m_buffer, "changed",
 668                           G_CALLBACK (gtk_text_changed_callback), this);
 669
 670         // .. and handle URLs on multi-line controls with wxTE_AUTO_URL style
 671         if (style & wxTE_AUTO_URL)
 672         {
 673             GtkTextIter start, end;
 674             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 675             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 676
 677             // We create our wxUrl tag here for slight efficiency gain - we
 678             // don't have to check for the tag existance in callbacks,
 679             // hereby it's guaranteed to exist.
 680             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 681                                        "foreground", "blue",
 682                                        "underline", PANGO_UNDERLINE_SINGLE,
 683                                        NULL);
 684
 685             // Check for URLs after each text change
 686             g_signal_connect_after (m_buffer, "insert_text",
 687                                     G_CALLBACK (au_insert_text_callback), this);
 688             g_signal_connect_after (m_buffer, "delete_range",
 689                                     G_CALLBACK (au_delete_range_callback), this);
 690
 691             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 692             // block this callback temporarily. This takes care of gtk+ internal
 693             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 694             // which is undesired because only a part of the URL might be copied.
 695             // The insert-text signal emitted inside it will take care of newly formed
 696             // or wholly copied URLs.
 697             g_signal_connect (m_buffer, "apply_tag",
 698                               G_CALLBACK (au_apply_tag_callback), NULL);
 699
 700             // Check for URLs in the initial string passed to Create
 701             gtk_text_buffer_get_start_iter(m_buffer, &start);
 702             gtk_text_buffer_get_end_iter(m_buffer, &end);
 703             au_check_range(&start, &end);
 704         }
 705     }
 706     else
 707     {
 708         g_signal_connect (m_text, "changed",
 709                           G_CALLBACK (gtk_text_changed_callback), this);
 710     }
 711
 712     m_cursor = wxCursor( wxCURSOR_IBEAM );
 713
 714     wxTextAttr attrDef(GetForegroundColour(), GetBackgroundColour(), GetFont());
 715     SetDefaultStyle( attrDef );
 716
 717     return true;
 718 }
 719
 720
 721 void wxTextCtrl::CalculateScrollbar()
 722 {
 723 }
 724
 725 wxString wxTextCtrl::GetValue() const
 726 {
 727     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 728
 729     wxString tmp;
 730     if (m_windowStyle & wxTE_MULTILINE)
 731     {
 732         GtkTextIter start;
 733         gtk_text_buffer_get_start_iter( m_buffer, &start );
 734         GtkTextIter end;
 735         gtk_text_buffer_get_end_iter( m_buffer, &end );
 736         gchar *text = gtk_text_buffer_get_text( m_buffer, &start, &end, TRUE );
 737
 738 #if wxUSE_UNICODE
 739         wxWCharBuffer buffer( wxConvUTF8.cMB2WX( text ) );
 740 #else
 741         wxCharBuffer buffer( wxConvLocal.cWC2WX( wxConvUTF8.cMB2WC( text ) ) );
 742 #endif
 743         if ( buffer )
 744             tmp = buffer;
 745
 746         g_free( text );
 747     }
 748     else
 749     {
 750         tmp = wxGTK_CONV_BACK( gtk_entry_get_text( GTK_ENTRY(m_text) ) );
 751     }
 752
 753     return tmp;
 754 }
 755
 756 void wxTextCtrl::SetValue( const wxString &value )
 757 {
 758     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 759
 760     if (m_windowStyle & wxTE_MULTILINE)
 761     {
 762 #if wxUSE_UNICODE
 763         wxCharBuffer buffer( wxConvUTF8.cWX2MB( value) );
 764 #else
 765         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( value ) ) );
 766 #endif
 767         if (gtk_text_buffer_get_char_count(m_buffer) != 0)
 768             IgnoreNextTextUpdate();
 769
 770         if ( !buffer )
 771         {
 772             // what else can we do? at least don't crash...
 773             return;
 774         }
 775
 776         gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 777     }
 778     else
 779     {
 780         gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV( value ) );
 781     }
 782
 783     // GRG, Jun/2000: Changed this after a lot of discussion in
 784     //   the lists. wxWidgets 2.2 will have a set of flags to
 785     //   customize this behaviour.
 786     SetInsertionPoint(0);
 787
 788     m_modified = false;
 789 }
 790
 791 void wxTextCtrl::WriteText( const wxString &text )
 792 {
 793     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 794
 795     if ( text.empty() )
 796         return;
 797
 798     // gtk_text_changed_callback() will set m_modified to true but m_modified
 799     // shouldn't be changed by the program writing to the text control itself,
 800     // so save the old value and restore when we're done
 801     bool oldModified = m_modified;
 802
 803     if ( m_windowStyle & wxTE_MULTILINE )
 804     {
 805 #if wxUSE_UNICODE
 806         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 807 #else
 808         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 809 #endif
 810         if ( !buffer )
 811         {
 812             // what else can we do? at least don't crash...
 813             return;
 814         }
 815
 816         // TODO: Call whatever is needed to delete the selection.
 817         wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
 818
 819         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
 820         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
 821         if ( wxIsSameDouble(adj->value, adj->upper - adj->page_size) )
 822         {
 823             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
 824                     gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
 825         }
 826     }
 827     else // single line
 828     {
 829         // First remove the selection if there is one
 830         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 831
 832         // This moves the cursor pos to behind the inserted text.
 833         gint len = GET_EDITABLE_POS(m_text);
 834
 835 #if wxUSE_UNICODE
 836         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 837 #else
 838         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 839 #endif
 840         if ( !buffer )
 841         {
 842             // what else can we do? at least don't crash...
 843             return;
 844         }
 845
 846         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 847
 848         // Bring entry's cursor uptodate.
 849         gtk_entry_set_position( GTK_ENTRY(m_text), len );
 850     }
 851
 852     m_modified = oldModified;
 853 }
 854
 855 void wxTextCtrl::AppendText( const wxString &text )
 856 {
 857     SetInsertionPointEnd();
 858     WriteText( text );
 859 }
 860
 861 wxString wxTextCtrl::GetLineText( long lineNo ) const
 862 {
 863     if (m_windowStyle & wxTE_MULTILINE)
 864     {
 865         GtkTextIter line;
 866         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
 867         GtkTextIter end = line;
 868         gtk_text_iter_forward_to_line_end(&end);
 869         gchar *text = gtk_text_buffer_get_text(m_buffer,&line,&end,TRUE);
 870         wxString result(wxGTK_CONV_BACK(text));
 871         g_free(text);
 872         return result;
 873     }
 874     else
 875     {
 876         if (lineNo == 0) return GetValue();
 877         return wxEmptyString;
 878     }
 879 }
 880
 881 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 882 {
 883   /* If you implement this, don't forget to update the documentation!
 884    * (file docs/latex/wx/text.tex) */
 885     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 886 }
 887
 888 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 889 {
 890     if ( m_windowStyle & wxTE_MULTILINE )
 891     {
 892         GtkTextIter iter;
 893         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
 894         if (gtk_text_iter_is_end(&iter))
 895             return false;
 896
 897         *y = gtk_text_iter_get_line(&iter);
 898         *x = gtk_text_iter_get_line_offset(&iter);
 899     }
 900     else // single line control
 901     {
 902         if ( pos <= GTK_ENTRY(m_text)->text_length )
 903         {
 904             *y = 0;
 905             *x = pos;
 906         }
 907         else
 908         {
 909             // index out of bounds
 910             return false;
 911         }
 912     }
 913
 914     return true;
 915 }
 916
 917 long wxTextCtrl::XYToPosition(long x, long y ) const
 918 {
 919     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 920
 921     GtkTextIter iter;
 922     if (y >= gtk_text_buffer_get_line_count (m_buffer))
 923         return -1;
 924
 925     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
 926     if (x >= gtk_text_iter_get_chars_in_line (&iter))
 927         return -1;
 928
 929     return gtk_text_iter_get_offset(&iter) + x;
 930 }
 931
 932 int wxTextCtrl::GetLineLength(long lineNo) const
 933 {
 934     if (m_windowStyle & wxTE_MULTILINE)
 935     {
 936         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
 937         if (lineNo > last_line)
 938             return -1;
 939
 940         GtkTextIter iter;
 941         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
 942         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
 943         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
 944     }
 945     else
 946     {
 947         wxString str = GetLineText (lineNo);
 948         return (int) str.Length();
 949     }
 950 }
 951
 952 int wxTextCtrl::GetNumberOfLines() const
 953 {
 954     if (m_windowStyle & wxTE_MULTILINE)
 955         return gtk_text_buffer_get_line_count( m_buffer );
 956     else
 957         return 1;
 958 }
 959
 960 void wxTextCtrl::SetInsertionPoint( long pos )
 961 {
 962     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 963
 964     if ( IsMultiLine() )
 965     {
 966         GtkTextIter iter;
 967         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
 968         gtk_text_buffer_place_cursor( m_buffer, &iter );
 969         gtk_text_view_scroll_mark_onscreen
 970         (
 971             GTK_TEXT_VIEW(m_text),
 972             gtk_text_buffer_get_insert( m_buffer )
 973         );
 974     }
 975     else
 976     {
 977         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 978
 979         // Bring editable's cursor uptodate. Bug in GTK.
 980         SET_EDITABLE_POS(m_text, (guint32)pos);
 981     }
 982 }
 983
 984 void wxTextCtrl::SetInsertionPointEnd()
 985 {
 986     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 987
 988     if (m_windowStyle & wxTE_MULTILINE)
 989     {
 990         GtkTextIter end;
 991         gtk_text_buffer_get_end_iter( m_buffer, &end );
 992         gtk_text_buffer_place_cursor( m_buffer, &end );
 993     }
 994     else
 995     {
 996         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 997     }
 998 }
 999
1000 void wxTextCtrl::SetEditable( bool editable )
1001 {
1002     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1003
1004     if (m_windowStyle & wxTE_MULTILINE)
1005     {
1006         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1007     }
1008     else
1009     {
1010         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
1011     }
1012 }
1013
1014 bool wxTextCtrl::Enable( bool enable )
1015 {
1016     if (!wxWindowBase::Enable(enable))
1017     {
1018         // nothing to do
1019         return false;
1020     }
1021
1022     if (m_windowStyle & wxTE_MULTILINE)
1023     {
1024         SetEditable( enable );
1025     }
1026     else
1027     {
1028         gtk_widget_set_sensitive( m_text, enable );
1029     }
1030
1031     return true;
1032 }
1033
1034 // wxGTK-specific: called recursively by Enable,
1035 // to give widgets an oppprtunity to correct their colours after they
1036 // have been changed by Enable
1037 void wxTextCtrl::OnParentEnable( bool enable )
1038 {
1039     // If we have a custom background colour, we use this colour in both
1040     // disabled and enabled mode, or we end up with a different colour under the
1041     // text.
1042     wxColour oldColour = GetBackgroundColour();
1043     if (oldColour.Ok())
1044     {
1045         // Need to set twice or it'll optimize the useful stuff out
1046         if (oldColour == * wxWHITE)
1047             SetBackgroundColour(*wxBLACK);
1048         else
1049             SetBackgroundColour(*wxWHITE);
1050         SetBackgroundColour(oldColour);
1051     }
1052 }
1053
1054 void wxTextCtrl::MarkDirty()
1055 {
1056     m_modified = true;
1057 }
1058
1059 void wxTextCtrl::DiscardEdits()
1060 {
1061     m_modified = false;
1062 }
1063
1064 // ----------------------------------------------------------------------------
1065 // max text length support
1066 // ----------------------------------------------------------------------------
1067
1068 void wxTextCtrl::IgnoreNextTextUpdate()
1069 {
1070     m_ignoreNextUpdate = true;
1071 }
1072
1073 bool wxTextCtrl::IgnoreTextUpdate()
1074 {
1075     if ( m_ignoreNextUpdate )
1076     {
1077         m_ignoreNextUpdate = false;
1078
1079         return true;
1080     }
1081
1082     return false;
1083 }
1084
1085 void wxTextCtrl::SetMaxLength(unsigned long len)
1086 {
1087     if ( !HasFlag(wxTE_MULTILINE) )
1088     {
1089         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
1090
1091         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
1092         // we had tried to enter more text than allowed by max text length and
1093         // the text wasn't really changed
1094         //
1095         // to detect this and generate TEXT_MAXLEN event instead of
1096         // TEXT_CHANGED one in this case we also catch "insert_text" signal
1097         //
1098         // when max len is set to 0 we disconnect our handler as it means that
1099         // we shouldn't check anything any more
1100         if ( len )
1101         {
1102             g_signal_connect (m_text, "insert_text",
1103                               G_CALLBACK (gtk_insert_text_callback), this);
1104         }
1105         else // no checking
1106         {
1107             g_signal_handlers_disconnect_by_func (m_text,
1108                     (gpointer) gtk_insert_text_callback, this);
1109         }
1110     }
1111 }
1112
1113 void wxTextCtrl::SetSelection( long from, long to )
1114 {
1115     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1116
1117     if (from == -1 && to == -1)
1118     {
1119         from = 0;
1120         to = GetValue().Length();
1121     }
1122
1123     if (m_windowStyle & wxTE_MULTILINE)
1124     {
1125         GtkTextIter fromi, toi;
1126         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1127         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1128
1129         gtk_text_buffer_place_cursor( m_buffer, &toi );
1130         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1131     }
1132     else
1133     {
1134         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1135     }
1136 }
1137
1138 void wxTextCtrl::ShowPosition( long pos )
1139 {
1140     if (m_windowStyle & wxTE_MULTILINE)
1141     {
1142         GtkTextIter iter;
1143         gtk_text_buffer_get_start_iter( m_buffer, &iter );
1144         gtk_text_iter_set_offset( &iter, pos );
1145         GtkTextMark *mark = gtk_text_buffer_create_mark( m_buffer, NULL, &iter, TRUE );
1146         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1147     }
1148 }
1149
1150 wxTextCtrlHitTestResult
1151 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1152 {
1153     if ( !IsMultiLine() )
1154     {
1155         // not supported
1156         return wxTE_HT_UNKNOWN;
1157     }
1158
1159     int x, y;
1160     gtk_text_view_window_to_buffer_coords
1161     (
1162         GTK_TEXT_VIEW(m_text),
1163         GTK_TEXT_WINDOW_TEXT,
1164         pt.x, pt.y,
1165         &x, &y
1166     );
1167
1168     GtkTextIter iter;
1169     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1170     if ( pos )
1171         *pos = gtk_text_iter_get_offset(&iter);
1172
1173     return wxTE_HT_ON_TEXT;
1174 }
1175
1176 long wxTextCtrl::GetInsertionPoint() const
1177 {
1178     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1179
1180     if (m_windowStyle & wxTE_MULTILINE)
1181     {
1182         // There is no direct accessor for the cursor, but
1183         // internally, the cursor is the "mark" called
1184         // "insert" in the text view's btree structure.
1185
1186         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1187         GtkTextIter cursor;
1188         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1189
1190         return gtk_text_iter_get_offset( &cursor );
1191     }
1192     else
1193     {
1194         return (long) GET_EDITABLE_POS(m_text);
1195     }
1196 }
1197
1198 wxTextPos wxTextCtrl::GetLastPosition() const
1199 {
1200     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1201
1202     int pos = 0;
1203
1204     if (m_windowStyle & wxTE_MULTILINE)
1205     {
1206         GtkTextIter end;
1207         gtk_text_buffer_get_end_iter( m_buffer, &end );
1208
1209         pos = gtk_text_iter_get_offset( &end );
1210     }
1211     else
1212     {
1213         pos = GTK_ENTRY(m_text)->text_length;
1214     }
1215
1216     return (long)pos;
1217 }
1218
1219 void wxTextCtrl::Remove( long from, long to )
1220 {
1221     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1222
1223     if (m_windowStyle & wxTE_MULTILINE)
1224     {
1225         GtkTextIter fromi, toi;
1226         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1227         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1228
1229         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1230     }
1231     else // single line
1232         gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1233 }
1234
1235 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1236 {
1237     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1238
1239     Remove( from, to );
1240
1241     if (!value.empty())
1242     {
1243         SetInsertionPoint( from );
1244         WriteText( value );
1245     }
1246 }
1247
1248 void wxTextCtrl::Cut()
1249 {
1250     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1251
1252     if (m_windowStyle & wxTE_MULTILINE)
1253         g_signal_emit_by_name (m_text, "cut-clipboard");
1254     else
1255         gtk_editable_cut_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1256 }
1257
1258 void wxTextCtrl::Copy()
1259 {
1260     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1261
1262     if (m_windowStyle & wxTE_MULTILINE)
1263         g_signal_emit_by_name (m_text, "copy-clipboard");
1264     else
1265         gtk_editable_copy_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1266 }
1267
1268 void wxTextCtrl::Paste()
1269 {
1270     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1271
1272     if (m_windowStyle & wxTE_MULTILINE)
1273         g_signal_emit_by_name (m_text, "paste-clipboard");
1274     else
1275         gtk_editable_paste_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1276 }
1277
1278 // Undo/redo
1279 void wxTextCtrl::Undo()
1280 {
1281     // TODO
1282     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1283 }
1284
1285 void wxTextCtrl::Redo()
1286 {
1287     // TODO
1288     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1289 }
1290
1291 bool wxTextCtrl::CanUndo() const
1292 {
1293     // TODO
1294     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1295     return false;
1296 }
1297
1298 bool wxTextCtrl::CanRedo() const
1299 {
1300     // TODO
1301     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1302     return false;
1303 }
1304
1305 // If the return values from and to are the same, there is no
1306 // selection.
1307 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1308 {
1309     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1310
1311     gint from = -1;
1312     gint to = -1;
1313     bool haveSelection = false;
1314
1315      if (m_windowStyle & wxTE_MULTILINE)
1316      {
1317          GtkTextIter ifrom, ito;
1318          if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1319          {
1320              haveSelection = true;
1321              from = gtk_text_iter_get_offset(&ifrom);
1322              to = gtk_text_iter_get_offset(&ito);
1323          }
1324      }
1325      else  // not multi-line
1326      {
1327          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1328                                                  &from, &to) )
1329          {
1330              haveSelection = true;
1331          }
1332      }
1333
1334      if (! haveSelection )
1335           from = to = GetInsertionPoint();
1336
1337      if ( from > to )
1338      {
1339          // exchange them to be compatible with wxMSW
1340          gint tmp = from;
1341          from = to;
1342          to = tmp;
1343      }
1344
1345     if ( fromOut )
1346         *fromOut = from;
1347     if ( toOut )
1348         *toOut = to;
1349 }
1350
1351
1352 bool wxTextCtrl::IsEditable() const
1353 {
1354     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1355
1356     if (m_windowStyle & wxTE_MULTILINE)
1357     {
1358         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1359     }
1360     else
1361     {
1362         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1363     }
1364 }
1365
1366 bool wxTextCtrl::IsModified() const
1367 {
1368     return m_modified;
1369 }
1370
1371 void wxTextCtrl::Clear()
1372 {
1373     SetValue( wxEmptyString );
1374 }
1375
1376 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1377 {
1378     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1379
1380     if ((key_event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1381     {
1382         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1383         event.SetEventObject(this);
1384         event.SetString(GetValue());
1385         if (GetEventHandler()->ProcessEvent(event)) return;
1386     }
1387
1388     if ((key_event.GetKeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1389     {
1390         // This will invoke the dialog default action, such
1391         // as the clicking the default button.
1392
1393         wxWindow *top_frame = m_parent;
1394         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1395             top_frame = top_frame->GetParent();
1396
1397         if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1398         {
1399             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1400
1401             if (window->default_widget)
1402             {
1403                 gtk_widget_activate (window->default_widget);
1404                 return;
1405             }
1406         }
1407     }
1408
1409     key_event.Skip();
1410 }
1411
1412 GtkWidget* wxTextCtrl::GetConnectWidget()
1413 {
1414     return GTK_WIDGET(m_text);
1415 }
1416
1417 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1418 {
1419     if (m_windowStyle & wxTE_MULTILINE)
1420     {
1421         return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT );  // pure guesswork
1422     }
1423     else
1424     {
1425         return (window == GTK_ENTRY(m_text)->text_area);
1426     }
1427 }
1428
1429 // the font will change for subsequent text insertiongs
1430 bool wxTextCtrl::SetFont( const wxFont &font )
1431 {
1432     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1433
1434     if ( !wxTextCtrlBase::SetFont(font) )
1435     {
1436         // font didn't change, nothing to do
1437         return false;
1438     }
1439
1440     if ( m_windowStyle & wxTE_MULTILINE )
1441     {
1442         SetUpdateFont(true);
1443
1444         m_defaultStyle.SetFont(font);
1445
1446         ChangeFontGlobally();
1447     }
1448
1449     return true;
1450 }
1451
1452 void wxTextCtrl::ChangeFontGlobally()
1453 {
1454     // this method is very inefficient and hence should be called as rarely as
1455     // possible!
1456     //
1457     // TODO: it can be implemented much more efficiently for GTK2
1458     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE),
1459                   _T("shouldn't be called for single line controls") );
1460
1461     wxString value = GetValue();
1462     if ( !value.empty() )
1463     {
1464         SetUpdateFont(false);
1465
1466         Clear();
1467         AppendText(value);
1468     }
1469 }
1470
1471 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1472 {
1473     if ( !wxControl::SetForegroundColour(colour) )
1474         return false;
1475
1476     // update default fg colour too
1477     m_defaultStyle.SetTextColour(colour);
1478
1479     return true;
1480 }
1481
1482 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1483 {
1484     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1485
1486     if ( !wxControl::SetBackgroundColour( colour ) )
1487         return false;
1488
1489     if (!m_backgroundColour.Ok())
1490         return false;
1491
1492     // change active background color too
1493     m_defaultStyle.SetBackgroundColour( colour );
1494
1495     return true;
1496 }
1497
1498 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1499 {
1500     if ( m_windowStyle & wxTE_MULTILINE )
1501     {
1502         if ( style.IsDefault() )
1503         {
1504             // nothing to do
1505             return true;
1506         }
1507
1508         gint l = gtk_text_buffer_get_char_count( m_buffer );
1509
1510         wxCHECK_MSG( start >= 0 && end <= l, false,
1511                      _T("invalid range in wxTextCtrl::SetStyle") );
1512
1513         GtkTextIter starti, endi;
1514         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1515         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1516
1517         // use the attributes from style which are set in it and fall back
1518         // first to the default style and then to the text control default
1519         // colours for the others
1520         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1521
1522         wxGtkTextApplyTagsFromAttr( m_buffer, attr, &starti, &endi );
1523
1524         return true;
1525     }
1526
1527     // else single line
1528     // cannot do this for GTK+'s Entry widget
1529     return false;
1530 }
1531
1532 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1533 {
1534     gtk_widget_modify_style(m_text, style);
1535 }
1536
1537 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1538 {
1539     Cut();
1540 }
1541
1542 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1543 {
1544     Copy();
1545 }
1546
1547 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1548 {
1549     Paste();
1550 }
1551
1552 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1553 {
1554     Undo();
1555 }
1556
1557 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1558 {
1559     Redo();
1560 }
1561
1562 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1563 {
1564     event.Enable( CanCut() );
1565 }
1566
1567 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1568 {
1569     event.Enable( CanCopy() );
1570 }
1571
1572 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1573 {
1574     event.Enable( CanPaste() );
1575 }
1576
1577 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1578 {
1579     event.Enable( CanUndo() );
1580 }
1581
1582 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1583 {
1584     event.Enable( CanRedo() );
1585 }
1586
1587 void wxTextCtrl::OnInternalIdle()
1588 {
1589     wxCursor cursor = m_cursor;
1590     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1591
1592     if (g_delayedFocus == this)
1593     {
1594         if (GTK_WIDGET_REALIZED(m_widget))
1595         {
1596             gtk_widget_grab_focus( m_widget );
1597             g_delayedFocus = NULL;
1598         }
1599     }
1600
1601     if (wxUpdateUIEvent::CanUpdate(this))
1602         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1603 }
1604
1605 wxSize wxTextCtrl::DoGetBestSize() const
1606 {
1607     // FIXME should be different for multi-line controls...
1608     wxSize ret( wxControl::DoGetBestSize() );
1609     wxSize best(80, ret.y);
1610     CacheBestSize(best);
1611     return best;
1612 }
1613
1614 // ----------------------------------------------------------------------------
1615 // freeze/thaw
1616 // ----------------------------------------------------------------------------
1617
1618 void wxTextCtrl::Freeze()
1619 {
1620     if ( HasFlag(wxTE_MULTILINE) )
1621     {
1622         if ( !m_frozenness++ )
1623         {
1624             // freeze textview updates and remove buffer
1625             g_signal_connect (m_text, "expose_event",
1626                               G_CALLBACK (gtk_text_exposed_callback), this);
1627             g_signal_connect (m_widget, "expose_event",
1628                               G_CALLBACK (gtk_text_exposed_callback), this);
1629             gtk_widget_set_sensitive(m_widget, false);
1630             g_object_ref(m_buffer);
1631             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), gtk_text_buffer_new(NULL));
1632         }
1633     }
1634 }
1635
1636 void wxTextCtrl::Thaw()
1637 {
1638     if ( HasFlag(wxTE_MULTILINE) )
1639     {
1640         wxASSERT_MSG( m_frozenness > 0, _T("Thaw() without matching Freeze()") );
1641
1642         if ( !--m_frozenness )
1643         {
1644             // Reattach buffer and thaw textview updates
1645             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1646             g_object_unref(m_buffer);
1647             gtk_widget_set_sensitive(m_widget, true);
1648             g_signal_handlers_disconnect_by_func (m_widget,
1649                     (gpointer) gtk_text_exposed_callback, this);
1650             g_signal_handlers_disconnect_by_func (m_text,
1651                     (gpointer) gtk_text_exposed_callback, this);
1652         }
1653     }
1654 }
1655
1656 // ----------------------------------------------------------------------------
1657 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1658 // ----------------------------------------------------------------------------
1659
1660 // FIXME: when dragging on a link the sample gets an "Unknown event".
1661 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1662 // a buggy sample, or something else
1663 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1664 {
1665     event.Skip();
1666     if(!(m_windowStyle & wxTE_AUTO_URL))
1667         return;
1668
1669     gint x, y;
1670     GtkTextIter start, end;
1671     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1672                                                 "wxUrl");
1673
1674     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1675                                           event.GetX(), event.GetY(), &x, &y);
1676
1677     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1678     if (!gtk_text_iter_has_tag(&end, tag))
1679     {
1680         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1681                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1682         return;
1683     }
1684
1685     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1686                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1687
1688     start = end;
1689     if(!gtk_text_iter_begins_tag(&start, tag))
1690         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1691     if(!gtk_text_iter_ends_tag(&end, tag))
1692         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1693
1694     // Native context menu is probably not desired on an URL.
1695     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1696     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1697         event.Skip(false);
1698
1699     wxTextUrlEvent url_event(m_windowId, event,
1700                              gtk_text_iter_get_offset(&start),
1701                              gtk_text_iter_get_offset(&end));
1702
1703     InitCommandEvent(url_event);
1704     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1705     //event.Skip(!GetEventHandler()->ProcessEvent(url_event));
1706     GetEventHandler()->ProcessEvent(url_event);
1707 }
1708
1709 // ----------------------------------------------------------------------------
1710 // scrolling
1711 // ----------------------------------------------------------------------------
1712
1713 GtkAdjustment *wxTextCtrl::GetVAdj() const
1714 {
1715     if ( !IsMultiLine() )
1716         return NULL;
1717
1718     return gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(m_widget));
1719 }
1720
1721 bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
1722 {
1723     float value = adj->value + diff;
1724
1725     if ( value < 0 )
1726         value = 0;
1727
1728     float upper = adj->upper - adj->page_size;
1729     if ( value > upper )
1730         value = upper;
1731
1732     // did we noticeably change the scroll position?
1733     if ( fabs(adj->value - value) < 0.2 )
1734     {
1735         // well, this is what Robert does in wxScrollBar, so it must be good...
1736         return false;
1737     }
1738
1739     adj->value = value;
1740
1741     gtk_adjustment_value_changed(GTK_ADJUSTMENT(adj));
1742
1743     return true;
1744 }
1745
1746 bool wxTextCtrl::ScrollLines(int lines)
1747 {
1748     GtkAdjustment *adj = GetVAdj();
1749     if ( !adj )
1750         return false;
1751
1752     int diff = (int)ceil(lines*adj->step_increment);
1753
1754     return DoScroll(adj, diff);
1755 }
1756
1757 bool wxTextCtrl::ScrollPages(int pages)
1758 {
1759     GtkAdjustment *adj = GetVAdj();
1760     if ( !adj )
1761         return false;
1762
1763     return DoScroll(adj, (int)ceil(pages*adj->page_increment));
1764 }
1765
1766
1767 // static
1768 wxVisualAttributes
1769 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1770 {
1771     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1772 }