src/gtk/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin, 2005 Mart Raudsepp
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #include "wx/textctrl.h"
  14
  15 #ifndef WX_PRECOMP
  16     #include "wx/intl.h"
  17     #include "wx/log.h"
  18     #include "wx/utils.h"
  19     #include "wx/settings.h"
  20     #include "wx/math.h"
  21 #endif
  22
  23 #include "wx/strconv.h"
  24 #include "wx/fontutil.h"        // for wxNativeFontInfo (GetNativeFontInfo())
  25
  26 #include <sys/types.h>
  27 #include <sys/stat.h>
  28 #include <ctype.h>
  29
  30 #include "wx/gtk/private.h"
  31
  32 // ----------------------------------------------------------------------------
  33 // helpers
  34 // ----------------------------------------------------------------------------
  35
  36 extern "C" {
  37 static void wxGtkOnRemoveTag(GtkTextBuffer *buffer,
  38                              GtkTextTag *tag,
  39                              GtkTextIter *start,
  40                              GtkTextIter *end,
  41                              char *prefix)
  42 {
  43     gchar *name;
  44     g_object_get (tag, "name", &name, NULL);
  45
  46     if (!name || strncmp(name, prefix, strlen(prefix)))
  47         // anonymous tag or not starting with prefix - don't remove
  48         g_signal_stop_emission_by_name (buffer, "remove_tag");
  49
  50     g_free(name);
  51 }
  52 }
  53
  54 static void wxGtkTextApplyTagsFromAttr(GtkWidget *text,
  55                                        GtkTextBuffer *text_buffer,
  56                                        const wxTextAttr& attr,
  57                                        GtkTextIter *start,
  58                                        GtkTextIter *end)
  59 {
  60     static gchar buf[1024];
  61     GtkTextTag *tag;
  62
  63     gulong remove_handler_id = g_signal_connect (text_buffer, "remove_tag",
  64             G_CALLBACK (wxGtkOnRemoveTag), gpointer("WX"));
  65     gtk_text_buffer_remove_all_tags(text_buffer, start, end);
  66     g_signal_handler_disconnect (text_buffer, remove_handler_id);
  67
  68     if (attr.HasFont())
  69     {
  70         PangoFontDescription *font_description = attr.GetFont().GetNativeFontInfo()->description;
  71         wxGtkString font_string(pango_font_description_to_string(font_description));
  72         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string.c_str());
  73         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  74                                          buf );
  75         if (!tag)
  76             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  77                                               "font-desc", font_description,
  78                                               NULL );
  79         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  80
  81         if (attr.GetFont().GetUnderlined())
  82         {
  83             g_snprintf(buf, sizeof(buf), "WXFONTUNDERLINE");
  84             tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  85                                              buf );
  86             if (!tag)
  87                 tag = gtk_text_buffer_create_tag( text_buffer, buf,
  88                                                   "underline-set", TRUE,
  89                                                   "underline", PANGO_UNDERLINE_SINGLE,
  90                                                   NULL );
  91             gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  92         }
  93     }
  94
  95     if (attr.HasTextColour())
  96     {
  97         const GdkColor *colFg = attr.GetTextColour().GetColor();
  98         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
  99                    colFg->red, colFg->green, colFg->blue);
 100         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 101                                          buf );
 102         if (!tag)
 103             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 104                                               "foreground-gdk", colFg, NULL );
 105         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 106     }
 107
 108     if (attr.HasBackgroundColour())
 109     {
 110         const GdkColor *colBg = attr.GetBackgroundColour().GetColor();
 111         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
 112                    colBg->red, colBg->green, colBg->blue);
 113         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 114                                          buf );
 115         if (!tag)
 116             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 117                                               "background-gdk", colBg, NULL );
 118         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 119     }
 120
 121     if (attr.HasAlignment())
 122     {
 123         GtkTextIter para_start, para_end = *end;
 124         gtk_text_buffer_get_iter_at_line( text_buffer,
 125                                           &para_start,
 126                                           gtk_text_iter_get_line(start) );
 127         gtk_text_iter_forward_line(&para_end);
 128
 129         remove_handler_id = g_signal_connect (text_buffer, "remove_tag",
 130                                               G_CALLBACK(wxGtkOnRemoveTag),
 131                                               gpointer("WXALIGNMENT"));
 132         gtk_text_buffer_remove_all_tags( text_buffer, &para_start, &para_end );
 133         g_signal_handler_disconnect (text_buffer, remove_handler_id);
 134
 135         GtkJustification align;
 136         switch (attr.GetAlignment())
 137         {
 138             default:
 139                 align = GTK_JUSTIFY_LEFT;
 140                 break;
 141             case wxTEXT_ALIGNMENT_RIGHT:
 142                 align = GTK_JUSTIFY_RIGHT;
 143                 break;
 144             case wxTEXT_ALIGNMENT_CENTER:
 145                 align = GTK_JUSTIFY_CENTER;
 146                 break;
 147             // gtk+ doesn't support justify as of gtk+-2.7.4
 148         }
 149
 150         g_snprintf(buf, sizeof(buf), "WXALIGNMENT %d", align);
 151         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 152                                          buf );
 153         if (!tag)
 154             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 155                                               "justification", align, NULL );
 156         gtk_text_buffer_apply_tag( text_buffer, tag, &para_start, &para_end );
 157     }
 158
 159     if (attr.HasLeftIndent())
 160     {
 161         // Indentation attribute
 162
 163         // Clear old indentation tags
 164         GtkTextIter para_start, para_end = *end;
 165         gtk_text_buffer_get_iter_at_line( text_buffer,
 166                                           &para_start,
 167                                           gtk_text_iter_get_line(start) );
 168         gtk_text_iter_forward_line(&para_end);
 169
 170         remove_handler_id = g_signal_connect (text_buffer, "remove_tag",
 171                                               G_CALLBACK(wxGtkOnRemoveTag),
 172                                               gpointer("WXINDENT"));
 173         gtk_text_buffer_remove_all_tags( text_buffer, &para_start, &para_end );
 174         g_signal_handler_disconnect (text_buffer, remove_handler_id);
 175
 176         // Convert indent from 1/10th of a mm into pixels
 177         float factor;
 178 #if GTK_CHECK_VERSION(2,2,0)
 179         if (!gtk_check_version(2,2,0))
 180             factor = (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 181                       gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 182         else
 183 #endif
 184             factor = (float)gdk_screen_width() / gdk_screen_width_mm() / 10;
 185
 186         const int indent = (int)(factor * attr.GetLeftIndent());
 187         const int subIndent = (int)(factor * attr.GetLeftSubIndent());
 188
 189         gint gindent;
 190         gint gsubindent;
 191
 192         if (subIndent >= 0)
 193         {
 194             gindent = indent;
 195             gsubindent = -subIndent;
 196         }
 197         else
 198         {
 199             gindent = -subIndent;
 200             gsubindent = indent;
 201         }
 202
 203         g_snprintf(buf, sizeof(buf), "WXINDENT %d %d", gindent, gsubindent);
 204         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 205                                         buf );
 206         if (!tag)
 207             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 208                                               "left-margin", gindent, "indent", gsubindent, NULL );
 209         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 210     }
 211
 212     if (attr.HasTabs())
 213     {
 214         // Set tab stops
 215
 216         // Clear old tabs
 217         GtkTextIter para_start, para_end = *end;
 218         gtk_text_buffer_get_iter_at_line( text_buffer,
 219                                           &para_start,
 220                                           gtk_text_iter_get_line(start) );
 221         gtk_text_iter_forward_line(&para_end);
 222
 223         remove_handler_id = g_signal_connect (text_buffer, "remove_tag",
 224                                               G_CALLBACK(wxGtkOnRemoveTag),
 225                                               gpointer("WXTABS"));
 226         gtk_text_buffer_remove_all_tags( text_buffer, &para_start, &para_end );
 227         g_signal_handler_disconnect (text_buffer, remove_handler_id);
 228
 229         const wxArrayInt& tabs = attr.GetTabs();
 230
 231         wxString tagname = _T("WXTABS");
 232         g_snprintf(buf, sizeof(buf), "WXTABS");
 233         for (size_t i = 0; i < tabs.GetCount(); i++)
 234             tagname += wxString::Format(_T(" %d"), tabs[i]);
 235
 236         const wxWX2MBbuf buf = tagname.mb_str(wxConvUTF8);
 237
 238         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
 239                                         buf );
 240         if (!tag)
 241         {
 242             // Factor to convert from 1/10th of a mm into pixels
 243             float factor;
 244 #if GTK_CHECK_VERSION(2,2,0)
 245             if (!gtk_check_version(2,2,0))
 246                 factor = (float)gdk_screen_get_width(gtk_widget_get_screen(text)) /
 247                           gdk_screen_get_width_mm(gtk_widget_get_screen(text)) / 10;
 248             else
 249 #endif
 250                 factor = (float)gdk_screen_width() / gdk_screen_width_mm() / 10;
 251
 252             PangoTabArray* tabArray = pango_tab_array_new(tabs.GetCount(), TRUE);
 253             for (size_t i = 0; i < tabs.GetCount(); i++)
 254                 pango_tab_array_set_tab(tabArray, i, PANGO_TAB_LEFT, (gint)(tabs[i] * factor));
 255             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 256                                               "tabs", tabArray, NULL );
 257             pango_tab_array_free(tabArray);
 258         }
 259         gtk_text_buffer_apply_tag (text_buffer, tag, &para_start, &para_end);
 260     }
 261 }
 262
 263 static void wxGtkTextInsert(GtkWidget *text,
 264                             GtkTextBuffer *text_buffer,
 265                             const wxTextAttr& attr,
 266                             const wxCharBuffer& buffer)
 267
 268 {
 269     gint start_offset;
 270     GtkTextIter iter, start;
 271
 272     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 273                                      gtk_text_buffer_get_insert (text_buffer) );
 274     start_offset = gtk_text_iter_get_offset (&iter);
 275     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 276
 277     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 278
 279     wxGtkTextApplyTagsFromAttr(text, text_buffer, attr, &start, &iter);
 280 }
 281
 282 // ----------------------------------------------------------------------------
 283 // "insert_text" for GtkEntry
 284 // ----------------------------------------------------------------------------
 285
 286 extern "C" {
 287 static void
 288 gtk_insert_text_callback(GtkEditable *editable,
 289                          const gchar *new_text,
 290                          gint new_text_length,
 291                          gint *position,
 292                          wxTextCtrl *win)
 293 {
 294     if (g_isIdle)
 295         wxapp_install_idle_handler();
 296
 297     // we should only be called if we have a max len limit at all
 298     GtkEntry *entry = GTK_ENTRY (editable);
 299
 300     wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
 301
 302     // check that we don't overflow the max length limit
 303     //
 304     // FIXME: this doesn't work when we paste a string which is going to be
 305     //        truncated
 306     if ( entry->text_length == entry->text_max_length )
 307     {
 308         // we don't need to run the base class version at all
 309         g_signal_stop_emission_by_name (editable, "insert_text");
 310
 311         // remember that the next changed signal is to be ignored to avoid
 312         // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
 313         win->IgnoreNextTextUpdate();
 314
 315         // and generate the correct one ourselves
 316         wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
 317         event.SetEventObject(win);
 318         event.SetString(win->GetValue());
 319         win->GetEventHandler()->ProcessEvent( event );
 320     }
 321 }
 322 }
 323
 324 // Implementation of wxTE_AUTO_URL for wxGTK2 by Mart Raudsepp,
 325
 326 extern "C" {
 327 static void
 328 au_apply_tag_callback(GtkTextBuffer *buffer,
 329                       GtkTextTag *tag,
 330                       GtkTextIter *start,
 331                       GtkTextIter *end,
 332                       gpointer textctrl)
 333 {
 334     if(tag == gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl"))
 335         g_signal_stop_emission_by_name (buffer, "apply_tag");
 336 }
 337 }
 338
 339 //-----------------------------------------------------------------------------
 340 //  GtkTextCharPredicates for gtk_text_iter_*_find_char
 341 //-----------------------------------------------------------------------------
 342
 343 extern "C" {
 344 static gboolean
 345 pred_whitespace (gunichar ch, gpointer user_data)
 346 {
 347     return g_unichar_isspace(ch);
 348 }
 349 }
 350
 351 extern "C" {
 352 static gboolean
 353 pred_non_whitespace (gunichar ch, gpointer user_data)
 354 {
 355     return !g_unichar_isspace(ch);
 356 }
 357 }
 358
 359 extern "C" {
 360 static gboolean
 361 pred_nonpunct (gunichar ch, gpointer user_data)
 362 {
 363     return !g_unichar_ispunct(ch);
 364 }
 365 }
 366
 367 extern "C" {
 368 static gboolean
 369 pred_nonpunct_or_slash (gunichar ch, gpointer user_data)
 370 {
 371     return !g_unichar_ispunct(ch) || ch == '/';
 372 }
 373 }
 374
 375 //-----------------------------------------------------------------------------
 376 //  Check for links between s and e and correct tags as necessary
 377 //-----------------------------------------------------------------------------
 378
 379 // This function should be made match better while being efficient at one point.
 380 // Most probably with a row of regular expressions.
 381 extern "C" {
 382 static void
 383 au_check_word( GtkTextIter *s, GtkTextIter *e )
 384 {
 385     static const char *URIPrefixes[] =
 386     {
 387         "http://",
 388         "ftp://",
 389         "www.",
 390         "ftp.",
 391         "mailto://",
 392         "https://",
 393         "file://",
 394         "nntp://",
 395         "news://",
 396         "telnet://",
 397         "mms://",
 398         "gopher://",
 399         "prospero://",
 400         "wais://",
 401     };
 402
 403     GtkTextIter start = *s, end = *e;
 404     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 405
 406     // Get our special link tag
 407     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 408
 409     // Get rid of punctuation from beginning and end.
 410     // Might want to move this to au_check_range if an improved link checking doesn't
 411     // use some intelligent punctuation checking itself (beware of undesired iter modifications).
 412     if(g_unichar_ispunct( gtk_text_iter_get_char( &start ) ) )
 413         gtk_text_iter_forward_find_char( &start, pred_nonpunct, NULL, e );
 414
 415     gtk_text_iter_backward_find_char( &end, pred_nonpunct_or_slash, NULL, &start );
 416     gtk_text_iter_forward_char(&end);
 417
 418     gchar* text = gtk_text_iter_get_text( &start, &end );
 419     size_t len = strlen(text), prefix_len;
 420     size_t n;
 421
 422     for( n = 0; n < WXSIZEOF(URIPrefixes); ++n )
 423     {
 424         prefix_len = strlen(URIPrefixes[n]);
 425         if((len > prefix_len) && !strncasecmp(text, URIPrefixes[n], prefix_len))
 426             break;
 427     }
 428
 429     if(n < WXSIZEOF(URIPrefixes))
 430     {
 431         gulong signal_id = g_signal_handler_find (buffer,
 432                                                   (GSignalMatchType) (G_SIGNAL_MATCH_FUNC),
 433                                                   0, 0, NULL,
 434                                                   (gpointer)au_apply_tag_callback, NULL);
 435
 436         g_signal_handler_block (buffer, signal_id);
 437         gtk_text_buffer_apply_tag(buffer, tag, &start, &end);
 438         g_signal_handler_unblock (buffer, signal_id);
 439     }
 440 }
 441 }
 442
 443 extern "C" {
 444 static void
 445 au_check_range(GtkTextIter *s,
 446                GtkTextIter *range_end)
 447 {
 448     GtkTextIter range_start = *s;
 449     GtkTextIter word_end;
 450     GtkTextBuffer *buffer = gtk_text_iter_get_buffer(s);
 451     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(buffer), "wxUrl");
 452
 453     gtk_text_buffer_remove_tag(buffer, tag, s, range_end);
 454
 455     if(g_unichar_isspace(gtk_text_iter_get_char(&range_start)))
 456         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 457
 458     while(!gtk_text_iter_equal(&range_start, range_end))
 459     {
 460         word_end = range_start;
 461         gtk_text_iter_forward_find_char(&word_end, pred_whitespace, NULL, range_end);
 462
 463         // Now we should have a word delimited by range_start and word_end, correct link tags
 464         au_check_word(&range_start, &word_end);
 465
 466         range_start = word_end;
 467         gtk_text_iter_forward_find_char(&range_start, pred_non_whitespace, NULL, range_end);
 468     }
 469 }
 470 }
 471
 472 //-----------------------------------------------------------------------------
 473 //  "insert-text" for GtkTextBuffer
 474 //-----------------------------------------------------------------------------
 475
 476 extern "C" {
 477 static void
 478 au_insert_text_callback(GtkTextBuffer *buffer,
 479                         GtkTextIter *end,
 480                         gchar *text,
 481                         gint len,
 482                         wxTextCtrl *win)
 483 {
 484     if (!len || !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 485         return;
 486
 487     GtkTextIter start = *end;
 488     gtk_text_iter_backward_chars(&start, g_utf8_strlen(text, len));
 489
 490     GtkTextIter line_start = start;
 491     GtkTextIter line_end = *end;
 492     GtkTextIter words_start = start;
 493     GtkTextIter words_end = *end;
 494
 495     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(&start));
 496     gtk_text_iter_forward_to_line_end(&line_end);
 497     gtk_text_iter_backward_find_char(&words_start, pred_whitespace, NULL, &line_start);
 498     gtk_text_iter_forward_find_char(&words_end, pred_whitespace, NULL, &line_end);
 499
 500     au_check_range(&words_start, &words_end);
 501 }
 502 }
 503
 504 //-----------------------------------------------------------------------------
 505 //  "delete-range" for GtkTextBuffer
 506 //-----------------------------------------------------------------------------
 507
 508 extern "C" {
 509 static void
 510 au_delete_range_callback(GtkTextBuffer *buffer,
 511                          GtkTextIter *start,
 512                          GtkTextIter *end,
 513                          wxTextCtrl *win)
 514 {
 515     if( !(win->GetWindowStyleFlag() & wxTE_AUTO_URL) )
 516         return;
 517
 518     GtkTextIter line_start = *start, line_end = *end;
 519
 520     gtk_text_iter_set_line(&line_start, gtk_text_iter_get_line(start));
 521     gtk_text_iter_forward_to_line_end(&line_end);
 522     gtk_text_iter_backward_find_char(start, pred_whitespace, NULL, &line_start);
 523     gtk_text_iter_forward_find_char(end, pred_whitespace, NULL, &line_end);
 524
 525     au_check_range(start, end);
 526 }
 527 }
 528
 529
 530 //-----------------------------------------------------------------------------
 531 //  "changed"
 532 //-----------------------------------------------------------------------------
 533
 534 extern "C" {
 535 static void
 536 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
 537 {
 538     if ( win->IgnoreTextUpdate() )
 539         return;
 540
 541     if (!win->m_hasVMT) return;
 542
 543     if (g_isIdle)
 544         wxapp_install_idle_handler();
 545
 546     if ( win->MarkDirtyOnChange() )
 547         win->MarkDirty();
 548
 549     win->SendTextUpdatedEvent();
 550 }
 551 }
 552
 553 //-----------------------------------------------------------------------------
 554 //  clipboard events: "copy-clipboard", "cut-clipboard", "paste-clipboard"
 555 //-----------------------------------------------------------------------------
 556
 557 // common part of the event handlers below
 558 static void
 559 handle_text_clipboard_callback( GtkWidget *widget, wxTextCtrl *win,
 560                                 wxEventType eventType, const gchar * signal_name)
 561 {
 562     wxClipboardTextEvent event( eventType, win->GetId() );
 563     event.SetEventObject( win );
 564     if ( win->GetEventHandler()->ProcessEvent( event ) )
 565     {
 566         // don't let the default processing to take place if we did something
 567         // ourselves in the event handler
 568         g_signal_stop_emission_by_name (widget, signal_name);
 569     }
 570 }
 571
 572 extern "C" {
 573 static void
 574 gtk_copy_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 575 {
 576     handle_text_clipboard_callback(
 577         widget, win, wxEVT_COMMAND_TEXT_COPY, "copy-clipboard" );
 578 }
 579
 580 static void
 581 gtk_cut_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 582 {
 583     handle_text_clipboard_callback(
 584         widget, win, wxEVT_COMMAND_TEXT_CUT, "cut-clipboard" );
 585 }
 586
 587 static void
 588 gtk_paste_clipboard_callback( GtkWidget *widget, wxTextCtrl *win )
 589 {
 590     handle_text_clipboard_callback(
 591         widget, win, wxEVT_COMMAND_TEXT_PASTE, "paste-clipboard" );
 592 }
 593 }
 594
 595 //-----------------------------------------------------------------------------
 596 // "expose_event" from scrolled window and textview
 597 //-----------------------------------------------------------------------------
 598
 599 extern "C" {
 600 static gboolean
 601 gtk_text_exposed_callback( GtkWidget *widget, GdkEventExpose *event, wxTextCtrl *win )
 602 {
 603     return TRUE;
 604 }
 605 }
 606
 607
 608 //-----------------------------------------------------------------------------
 609 //  wxTextCtrl
 610 //-----------------------------------------------------------------------------
 611
 612 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
 613
 614 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
 615     EVT_CHAR(wxTextCtrl::OnChar)
 616
 617     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 618     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 619     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 620     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 621     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 622
 623     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 624     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 625     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 626     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 627     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 628
 629     // wxTE_AUTO_URL wxTextUrl support. Currently only creates
 630     // wxTextUrlEvent in the same cases as wxMSW, more can be added here.
 631     EVT_MOTION      (wxTextCtrl::OnUrlMouseEvent)
 632     EVT_LEFT_DOWN   (wxTextCtrl::OnUrlMouseEvent)
 633     EVT_LEFT_UP     (wxTextCtrl::OnUrlMouseEvent)
 634     EVT_LEFT_DCLICK (wxTextCtrl::OnUrlMouseEvent)
 635     EVT_RIGHT_DOWN  (wxTextCtrl::OnUrlMouseEvent)
 636     EVT_RIGHT_UP    (wxTextCtrl::OnUrlMouseEvent)
 637     EVT_RIGHT_DCLICK(wxTextCtrl::OnUrlMouseEvent)
 638 END_EVENT_TABLE()
 639
 640 void wxTextCtrl::Init()
 641 {
 642     m_dontMarkDirty =
 643     m_modified = false;
 644
 645     m_countUpdatesToIgnore = 0;
 646
 647     SetUpdateFont(false);
 648
 649     m_text = NULL;
 650     m_frozenness = 0;
 651     m_gdkHandCursor = NULL;
 652     m_gdkXTermCursor = NULL;
 653 }
 654
 655 wxTextCtrl::~wxTextCtrl()
 656 {
 657     if(m_gdkHandCursor)
 658         gdk_cursor_unref(m_gdkHandCursor);
 659     if(m_gdkXTermCursor)
 660         gdk_cursor_unref(m_gdkXTermCursor);
 661 }
 662
 663 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 664                         wxWindowID id,
 665                         const wxString &value,
 666                         const wxPoint &pos,
 667                         const wxSize &size,
 668                         long style,
 669                         const wxValidator& validator,
 670                         const wxString &name )
 671 {
 672     Init();
 673
 674     Create( parent, id, value, pos, size, style, validator, name );
 675 }
 676
 677 bool wxTextCtrl::Create( wxWindow *parent,
 678                          wxWindowID id,
 679                          const wxString &value,
 680                          const wxPoint &pos,
 681                          const wxSize &size,
 682                          long style,
 683                          const wxValidator& validator,
 684                          const wxString &name )
 685 {
 686     m_needParent = true;
 687     m_acceptsFocus = true;
 688
 689     if (!PreCreation( parent, pos, size ) ||
 690         !CreateBase( parent, id, pos, size, style, validator, name ))
 691     {
 692         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 693         return false;
 694     }
 695
 696     bool multi_line = (style & wxTE_MULTILINE) != 0;
 697
 698     if (multi_line)
 699     {
 700         // Create view
 701         m_text = gtk_text_view_new();
 702
 703         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 704
 705         // create scrolled window
 706         m_widget = gtk_scrolled_window_new( NULL, NULL );
 707         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 708                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 709         // for ScrollLines/Pages
 710         m_scrollBar[1] = (GtkRange*)((GtkScrolledWindow*)m_widget)->vscrollbar;
 711
 712         // Insert view into scrolled window
 713         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 714
 715         // translate wx wrapping style to GTK+
 716         GtkWrapMode wrap;
 717         if ( HasFlag( wxTE_DONTWRAP ) )
 718             wrap = GTK_WRAP_NONE;
 719         else if ( HasFlag( wxTE_CHARWRAP ) )
 720             wrap = GTK_WRAP_CHAR;
 721         else if ( HasFlag( wxTE_WORDWRAP ) )
 722             wrap = GTK_WRAP_WORD;
 723         else // HasFlag(wxTE_BESTWRAP) always true as wxTE_BESTWRAP == 0
 724         {
 725             // GTK_WRAP_WORD_CHAR seems to be new in GTK+ 2.4
 726 #ifdef __WXGTK24__
 727             if ( !gtk_check_version(2,4,0) )
 728             {
 729                 wrap = GTK_WRAP_WORD_CHAR;
 730             }
 731             else
 732 #endif
 733             wrap = GTK_WRAP_WORD;
 734         }
 735
 736         gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), wrap );
 737
 738         GtkScrolledWindowSetBorder(m_widget, style);
 739
 740         gtk_widget_add_events( GTK_WIDGET(m_text), GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK );
 741
 742         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 743     }
 744     else
 745     {
 746         // a single-line text control: no need for scrollbars
 747         m_widget =
 748         m_text = gtk_entry_new();
 749
 750         if (style & wxNO_BORDER)
 751             g_object_set (m_text, "has-frame", FALSE, NULL);
 752     }
 753
 754     m_parent->DoAddChild( this );
 755
 756     m_focusWidget = m_text;
 757
 758     PostCreation(size);
 759
 760     if (multi_line)
 761     {
 762         gtk_widget_show(m_text);
 763     }
 764
 765     if (!value.empty())
 766     {
 767         SetValue( value );
 768     }
 769
 770     if (style & wxTE_PASSWORD)
 771     {
 772         if (!multi_line)
 773             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 774     }
 775
 776     if (style & wxTE_READONLY)
 777     {
 778         if (!multi_line)
 779             gtk_editable_set_editable( GTK_EDITABLE(m_text), FALSE );
 780         else
 781             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 782     }
 783
 784     if (multi_line)
 785     {
 786         if (style & wxTE_RIGHT)
 787             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_RIGHT );
 788         else if (style & wxTE_CENTRE)
 789             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_CENTER );
 790         // Left justify (alignment) is the default and we don't need to apply GTK_JUSTIFY_LEFT
 791     }
 792     else
 793     {
 794 #ifdef __WXGTK24__
 795         // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 796         if (!gtk_check_version(2,4,0))
 797         {
 798             if (style & wxTE_RIGHT)
 799                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 1.0 );
 800             else if (style & wxTE_CENTRE)
 801                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 0.5 );
 802         }
 803 #endif
 804     }
 805
 806     // We want to be notified about text changes.
 807     if (multi_line)
 808     {
 809         g_signal_connect (m_buffer, "changed",
 810                           G_CALLBACK (gtk_text_changed_callback), this);
 811
 812         // .. and handle URLs on multi-line controls with wxTE_AUTO_URL style
 813         if (style & wxTE_AUTO_URL)
 814         {
 815             GtkTextIter start, end;
 816             m_gdkHandCursor = gdk_cursor_new(GDK_HAND2);
 817             m_gdkXTermCursor = gdk_cursor_new(GDK_XTERM);
 818
 819             // We create our wxUrl tag here for slight efficiency gain - we
 820             // don't have to check for the tag existance in callbacks,
 821             // hereby it's guaranteed to exist.
 822             gtk_text_buffer_create_tag(m_buffer, "wxUrl",
 823                                        "foreground", "blue",
 824                                        "underline", PANGO_UNDERLINE_SINGLE,
 825                                        NULL);
 826
 827             // Check for URLs after each text change
 828             g_signal_connect_after (m_buffer, "insert_text",
 829                                     G_CALLBACK (au_insert_text_callback), this);
 830             g_signal_connect_after (m_buffer, "delete_range",
 831                                     G_CALLBACK (au_delete_range_callback), this);
 832
 833             // Block all wxUrl tag applying unless we do it ourselves, in which case we
 834             // block this callback temporarily. This takes care of gtk+ internal
 835             // gtk_text_buffer_insert_range* calls that would copy our URL tag otherwise,
 836             // which is undesired because only a part of the URL might be copied.
 837             // The insert-text signal emitted inside it will take care of newly formed
 838             // or wholly copied URLs.
 839             g_signal_connect (m_buffer, "apply_tag",
 840                               G_CALLBACK (au_apply_tag_callback), NULL);
 841
 842             // Check for URLs in the initial string passed to Create
 843             gtk_text_buffer_get_start_iter(m_buffer, &start);
 844             gtk_text_buffer_get_end_iter(m_buffer, &end);
 845             au_check_range(&start, &end);
 846         }
 847     }
 848     else
 849     {
 850         g_signal_connect (m_text, "changed",
 851                           G_CALLBACK (gtk_text_changed_callback), this);
 852     }
 853
 854     g_signal_connect (m_text, "copy-clipboard",
 855                       G_CALLBACK (gtk_copy_clipboard_callback), this);
 856     g_signal_connect (m_text, "cut-clipboard",
 857                       G_CALLBACK (gtk_cut_clipboard_callback), this);
 858     g_signal_connect (m_text, "paste-clipboard",
 859                       G_CALLBACK (gtk_paste_clipboard_callback), this);
 860
 861     m_cursor = wxCursor( wxCURSOR_IBEAM );
 862
 863     wxTextAttr attrDef(GetForegroundColour(), GetBackgroundColour(), GetFont());
 864     SetDefaultStyle( attrDef );
 865
 866     return true;
 867 }
 868
 869
 870 void wxTextCtrl::CalculateScrollbar()
 871 {
 872 }
 873
 874 wxString wxTextCtrl::GetValue() const
 875 {
 876     wxCHECK_MSG( m_text != NULL, wxEmptyString, wxT("invalid text ctrl") );
 877
 878     wxString tmp;
 879     if ( IsMultiLine() )
 880     {
 881         GtkTextIter start;
 882         gtk_text_buffer_get_start_iter( m_buffer, &start );
 883         GtkTextIter end;
 884         gtk_text_buffer_get_end_iter( m_buffer, &end );
 885         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &start, &end, true));
 886
 887         const wxWxCharBuffer buf = wxGTK_CONV_BACK(text);
 888         if ( buf )
 889             tmp = buf;
 890     }
 891     else
 892     {
 893         const gchar *text = gtk_entry_get_text( GTK_ENTRY(m_text) );
 894         const wxWxCharBuffer buf = wxGTK_CONV_BACK( text );
 895         if ( buf )
 896             tmp = buf;
 897     }
 898
 899     return tmp;
 900 }
 901
 902 wxFontEncoding wxTextCtrl::GetTextEncoding() const
 903 {
 904     // GTK+ uses UTF-8 internally, we need to convert to it but from which
 905     // encoding?
 906
 907     // first check the default text style (we intentionally don't check the
 908     // style for the current position as it doesn't make sense for SetValue())
 909     const wxTextAttr& style = GetDefaultStyle();
 910     wxFontEncoding enc = style.HasFont() ? style.GetFont().GetEncoding()
 911                                          : wxFONTENCODING_SYSTEM;
 912
 913     // fall back to the controls font if no style
 914     if ( enc == wxFONTENCODING_SYSTEM && m_hasFont )
 915         enc = GetFont().GetEncoding();
 916
 917     return enc;
 918 }
 919
 920 bool wxTextCtrl::IsEmpty() const
 921 {
 922     if ( IsMultiLine() )
 923         return gtk_text_buffer_get_char_count(m_buffer) == 0;
 924
 925     return wxTextCtrlBase::IsEmpty();
 926 }
 927
 928 void wxTextCtrl::DoSetValue( const wxString &value, int flags )
 929 {
 930     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 931
 932     // the control won't be modified any more as we programmatically replace
 933     // all the existing text, so reset the flag and don't set it again (and do
 934     // it now, before the text event handler is ran so that IsModified() called
 935     // from there returns the expected value)
 936     m_modified = false;
 937     DontMarkDirtyOnNextChange();
 938
 939     const wxCharBuffer buffer(wxGTK_CONV_ENC(value, GetTextEncoding()));
 940     if ( !buffer )
 941     {
 942         // see comment in WriteText() as to why we must warn the user about
 943         // this
 944         wxLogWarning(_("Failed to set text in the text control."));
 945         return;
 946     }
 947
 948     // if the control is not empty, two "changed" signals are emitted,
 949     // otherwise only one and we need to ignore either both or one of them
 950     int ignore = flags & SetValue_SendEvent ? 0 : 1;
 951     if ( !IsEmpty() )
 952         ignore++;
 953
 954     if ( ignore )
 955         IgnoreNextTextUpdate(ignore);
 956
 957     if ( IsMultiLine() )
 958     {
 959         gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 960     }
 961     else // single line
 962     {
 963         gtk_entry_set_text( GTK_ENTRY(m_text), buffer );
 964     }
 965
 966     // if, for whatever reason, the callback wasn't called the expected number
 967     // of times, still reset the flags to the default values
 968     m_dontMarkDirty = false;
 969     m_countUpdatesToIgnore = 0;
 970
 971
 972     // GRG, Jun/2000: Changed this after a lot of discussion in
 973     //   the lists. wxWidgets 2.2 will have a set of flags to
 974     //   customize this behaviour.
 975     SetInsertionPoint(0);
 976 }
 977
 978 void wxTextCtrl::WriteText( const wxString &text )
 979 {
 980     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 981
 982     if ( text.empty() )
 983         return;
 984
 985     // check if we have a specific style for the current position
 986     wxFontEncoding enc = wxFONTENCODING_SYSTEM;
 987     wxTextAttr style;
 988     if ( GetStyle(GetInsertionPoint(), style) && style.HasFont() )
 989     {
 990         enc = style.GetFont().GetEncoding();
 991     }
 992
 993     if ( enc == wxFONTENCODING_SYSTEM )
 994         enc = GetTextEncoding();
 995
 996     const wxCharBuffer buffer(wxGTK_CONV_ENC(text, enc));
 997     if ( !buffer )
 998     {
 999         // we must log an error here as losing the text like this can be a
1000         // serious problem (e.g. imagine the document edited by user being
1001         // empty instead of containing the correct text)
1002         wxLogWarning(_("Failed to insert text in the control."));
1003         return;
1004     }
1005
1006     // we're changing the text programmatically
1007     DontMarkDirtyOnNextChange();
1008
1009     if ( IsMultiLine() )
1010     {
1011         // First remove the selection if there is one
1012         // TODO:  Is there an easier GTK specific way to do this?
1013         long from, to;
1014         GetSelection(&from, &to);
1015         if (from != to)
1016             Remove(from, to);
1017
1018         // Insert the text
1019         wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
1020
1021         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
1022         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
1023         // won't work when frozen, text view is not using m_buffer then
1024         if (!IsFrozen() && wxIsSameDouble(adj->value, adj->upper - adj->page_size))
1025         {
1026             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
1027                     gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
1028         }
1029     }
1030     else // single line
1031     {
1032         // First remove the selection if there is one
1033         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
1034
1035         // This moves the cursor pos to behind the inserted text.
1036         gint len = gtk_editable_get_position(GTK_EDITABLE(m_text));
1037
1038         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
1039
1040         // Bring entry's cursor uptodate.
1041         gtk_editable_set_position( GTK_EDITABLE(m_text), len );
1042     }
1043 }
1044
1045 void wxTextCtrl::AppendText( const wxString &text )
1046 {
1047     SetInsertionPointEnd();
1048     WriteText( text );
1049 }
1050
1051 wxString wxTextCtrl::GetLineText( long lineNo ) const
1052 {
1053     wxString result;
1054     if ( IsMultiLine() )
1055     {
1056         GtkTextIter line;
1057         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
1058         GtkTextIter end = line;
1059         gtk_text_iter_forward_to_line_end(&end);
1060         wxGtkString text(gtk_text_buffer_get_text(m_buffer, &line, &end, true));
1061         result = wxGTK_CONV_BACK(text);
1062     }
1063     else
1064     {
1065         if (lineNo == 0)
1066             result = GetValue();
1067     }
1068     return result;
1069 }
1070
1071 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
1072 {
1073   /* If you implement this, don't forget to update the documentation!
1074    * (file docs/latex/wx/text.tex) */
1075     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
1076 }
1077
1078 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
1079 {
1080     if ( IsMultiLine() )
1081     {
1082         GtkTextIter iter;
1083
1084         if (pos > GetLastPosition())
1085             return false;
1086
1087         gtk_text_buffer_get_iter_at_offset(m_buffer, &iter, pos);
1088
1089         if ( y )
1090             *y = gtk_text_iter_get_line(&iter);
1091         if ( x )
1092             *x = gtk_text_iter_get_line_offset(&iter);
1093     }
1094     else // single line control
1095     {
1096         if ( pos <= GTK_ENTRY(m_text)->text_length )
1097         {
1098             if ( y )
1099                 *y = 0;
1100             if ( x )
1101                 *x = pos;
1102         }
1103         else
1104         {
1105             // index out of bounds
1106             return false;
1107         }
1108     }
1109
1110     return true;
1111 }
1112
1113 long wxTextCtrl::XYToPosition(long x, long y ) const
1114 {
1115     if ( IsSingleLine() )
1116         return 0;
1117
1118     GtkTextIter iter;
1119     if (y >= gtk_text_buffer_get_line_count (m_buffer))
1120         return -1;
1121
1122     gtk_text_buffer_get_iter_at_line(m_buffer, &iter, y);
1123     if (x >= gtk_text_iter_get_chars_in_line (&iter))
1124         return -1;
1125
1126     return gtk_text_iter_get_offset(&iter) + x;
1127 }
1128
1129 int wxTextCtrl::GetLineLength(long lineNo) const
1130 {
1131     if ( IsMultiLine() )
1132     {
1133         int last_line = gtk_text_buffer_get_line_count( m_buffer ) - 1;
1134         if (lineNo > last_line)
1135             return -1;
1136
1137         GtkTextIter iter;
1138         gtk_text_buffer_get_iter_at_line(m_buffer, &iter, lineNo);
1139         // get_chars_in_line return includes paragraph delimiters, so need to subtract 1 IF it is not the last line
1140         return gtk_text_iter_get_chars_in_line(&iter) - ((lineNo == last_line) ? 0 : 1);
1141     }
1142     else
1143     {
1144         wxString str = GetLineText (lineNo);
1145         return (int) str.length();
1146     }
1147 }
1148
1149 int wxTextCtrl::GetNumberOfLines() const
1150 {
1151     if ( IsMultiLine() )
1152     {
1153         return gtk_text_buffer_get_line_count( m_buffer );
1154     }
1155     else // single line
1156     {
1157         return 1;
1158     }
1159 }
1160
1161 void wxTextCtrl::SetInsertionPoint( long pos )
1162 {
1163     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1164
1165     if ( IsMultiLine() )
1166     {
1167         GtkTextIter iter;
1168         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
1169         gtk_text_buffer_place_cursor( m_buffer, &iter );
1170         if (!IsFrozen())
1171         {
1172             // won't work when frozen, text view is not using m_buffer then
1173             gtk_text_view_scroll_mark_onscreen
1174             (
1175                 GTK_TEXT_VIEW(m_text),
1176                 gtk_text_buffer_get_insert( m_buffer )
1177             );
1178         }
1179     }
1180     else
1181     {
1182         // FIXME: Is the editable's cursor really uptodate without double set_position in GTK2?
1183         gtk_editable_set_position(GTK_EDITABLE(m_text), int(pos));
1184     }
1185 }
1186
1187 void wxTextCtrl::SetInsertionPointEnd()
1188 {
1189     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1190
1191     if ( IsMultiLine() )
1192     {
1193         GtkTextIter end;
1194         gtk_text_buffer_get_end_iter( m_buffer, &end );
1195         gtk_text_buffer_place_cursor( m_buffer, &end );
1196     }
1197     else
1198     {
1199         gtk_editable_set_position( GTK_EDITABLE(m_text), -1 );
1200     }
1201 }
1202
1203 void wxTextCtrl::SetEditable( bool editable )
1204 {
1205     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1206
1207     if ( IsMultiLine() )
1208     {
1209         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
1210     }
1211     else
1212     {
1213         gtk_editable_set_editable( GTK_EDITABLE(m_text), editable );
1214     }
1215 }
1216
1217 bool wxTextCtrl::Enable( bool enable )
1218 {
1219     if (!wxWindowBase::Enable(enable))
1220     {
1221         // nothing to do
1222         return false;
1223     }
1224
1225     if ( IsMultiLine() )
1226     {
1227         SetEditable( enable );
1228     }
1229     else
1230     {
1231         gtk_widget_set_sensitive( m_text, enable );
1232     }
1233
1234     return true;
1235 }
1236
1237 // wxGTK-specific: called recursively by Enable,
1238 // to give widgets an oppprtunity to correct their colours after they
1239 // have been changed by Enable
1240 void wxTextCtrl::OnParentEnable( bool enable )
1241 {
1242     // If we have a custom background colour, we use this colour in both
1243     // disabled and enabled mode, or we end up with a different colour under the
1244     // text.
1245     wxColour oldColour = GetBackgroundColour();
1246     if (oldColour.Ok())
1247     {
1248         // Need to set twice or it'll optimize the useful stuff out
1249         if (oldColour == * wxWHITE)
1250             SetBackgroundColour(*wxBLACK);
1251         else
1252             SetBackgroundColour(*wxWHITE);
1253         SetBackgroundColour(oldColour);
1254     }
1255 }
1256
1257 void wxTextCtrl::MarkDirty()
1258 {
1259     m_modified = true;
1260 }
1261
1262 void wxTextCtrl::DiscardEdits()
1263 {
1264     m_modified = false;
1265 }
1266
1267 // ----------------------------------------------------------------------------
1268 // max text length support
1269 // ----------------------------------------------------------------------------
1270
1271 bool wxTextCtrl::IgnoreTextUpdate()
1272 {
1273     if ( m_countUpdatesToIgnore > 0 )
1274     {
1275         m_countUpdatesToIgnore--;
1276
1277         return true;
1278     }
1279
1280     return false;
1281 }
1282
1283 bool wxTextCtrl::MarkDirtyOnChange()
1284 {
1285     if ( m_dontMarkDirty )
1286     {
1287         m_dontMarkDirty = false;
1288
1289         return false;
1290     }
1291
1292     return true;
1293 }
1294
1295 void wxTextCtrl::SetMaxLength(unsigned long len)
1296 {
1297     if ( !HasFlag(wxTE_MULTILINE) )
1298     {
1299         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
1300
1301         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
1302         // we had tried to enter more text than allowed by max text length and
1303         // the text wasn't really changed
1304         //
1305         // to detect this and generate TEXT_MAXLEN event instead of
1306         // TEXT_CHANGED one in this case we also catch "insert_text" signal
1307         //
1308         // when max len is set to 0 we disconnect our handler as it means that
1309         // we shouldn't check anything any more
1310         if ( len )
1311         {
1312             g_signal_connect (m_text, "insert_text",
1313                               G_CALLBACK (gtk_insert_text_callback), this);
1314         }
1315         else // no checking
1316         {
1317             g_signal_handlers_disconnect_by_func (m_text,
1318                     (gpointer) gtk_insert_text_callback, this);
1319         }
1320     }
1321 }
1322
1323 void wxTextCtrl::SetSelection( long from, long to )
1324 {
1325     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1326
1327     if (from == -1 && to == -1)
1328     {
1329         from = 0;
1330         to = GetValue().length();
1331     }
1332
1333     if ( IsMultiLine() )
1334     {
1335         GtkTextIter fromi, toi;
1336         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1337         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1338
1339         gtk_text_buffer_place_cursor( m_buffer, &toi );
1340         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1341     }
1342     else
1343     {
1344         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1345     }
1346 }
1347
1348 void wxTextCtrl::ShowPosition( long pos )
1349 {
1350     // won't work when frozen, text view is not using m_buffer then
1351     if (IsMultiLine() && !IsFrozen())
1352     {
1353         GtkTextIter iter;
1354         gtk_text_buffer_get_start_iter( m_buffer, &iter );
1355         gtk_text_iter_set_offset( &iter, pos );
1356         GtkTextMark *mark = gtk_text_buffer_create_mark( m_buffer, NULL, &iter, TRUE );
1357         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1358     }
1359 }
1360
1361 wxTextCtrlHitTestResult
1362 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1363 {
1364     if ( !IsMultiLine() )
1365     {
1366         // not supported
1367         return wxTE_HT_UNKNOWN;
1368     }
1369
1370     int x, y;
1371     gtk_text_view_window_to_buffer_coords
1372     (
1373         GTK_TEXT_VIEW(m_text),
1374         GTK_TEXT_WINDOW_TEXT,
1375         pt.x, pt.y,
1376         &x, &y
1377     );
1378
1379     GtkTextIter iter;
1380     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1381     if ( pos )
1382         *pos = gtk_text_iter_get_offset(&iter);
1383
1384     return wxTE_HT_ON_TEXT;
1385 }
1386
1387 long wxTextCtrl::GetInsertionPoint() const
1388 {
1389     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1390
1391     if ( IsMultiLine() )
1392     {
1393         // There is no direct accessor for the cursor, but
1394         // internally, the cursor is the "mark" called
1395         // "insert" in the text view's btree structure.
1396
1397         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1398         GtkTextIter cursor;
1399         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1400
1401         return gtk_text_iter_get_offset( &cursor );
1402     }
1403     else
1404     {
1405         return (long) gtk_editable_get_position(GTK_EDITABLE(m_text));
1406     }
1407 }
1408
1409 wxTextPos wxTextCtrl::GetLastPosition() const
1410 {
1411     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1412
1413     int pos = 0;
1414
1415     if ( IsMultiLine() )
1416     {
1417         GtkTextIter end;
1418         gtk_text_buffer_get_end_iter( m_buffer, &end );
1419
1420         pos = gtk_text_iter_get_offset( &end );
1421     }
1422     else
1423     {
1424         pos = GTK_ENTRY(m_text)->text_length;
1425     }
1426
1427     return (long)pos;
1428 }
1429
1430 void wxTextCtrl::Remove( long from, long to )
1431 {
1432     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1433
1434     if ( IsMultiLine() )
1435     {
1436         GtkTextIter fromi, toi;
1437         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1438         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1439
1440         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1441     }
1442     else // single line
1443         gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1444 }
1445
1446 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1447 {
1448     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1449
1450     Remove( from, to );
1451
1452     if (!value.empty())
1453     {
1454         SetInsertionPoint( from );
1455         WriteText( value );
1456     }
1457 }
1458
1459 void wxTextCtrl::Cut()
1460 {
1461     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1462
1463     if ( IsMultiLine() )
1464         g_signal_emit_by_name (m_text, "cut-clipboard");
1465     else
1466         gtk_editable_cut_clipboard(GTK_EDITABLE(m_text));
1467 }
1468
1469 void wxTextCtrl::Copy()
1470 {
1471     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1472
1473     if ( IsMultiLine() )
1474         g_signal_emit_by_name (m_text, "copy-clipboard");
1475     else
1476         gtk_editable_copy_clipboard(GTK_EDITABLE(m_text));
1477 }
1478
1479 void wxTextCtrl::Paste()
1480 {
1481     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1482
1483     if ( IsMultiLine() )
1484         g_signal_emit_by_name (m_text, "paste-clipboard");
1485     else
1486         gtk_editable_paste_clipboard(GTK_EDITABLE(m_text));
1487 }
1488
1489 // Undo/redo
1490 void wxTextCtrl::Undo()
1491 {
1492     // TODO
1493     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1494 }
1495
1496 void wxTextCtrl::Redo()
1497 {
1498     // TODO
1499     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1500 }
1501
1502 bool wxTextCtrl::CanUndo() const
1503 {
1504     // TODO
1505     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1506     return false;
1507 }
1508
1509 bool wxTextCtrl::CanRedo() const
1510 {
1511     // TODO
1512     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1513     return false;
1514 }
1515
1516 // If the return values from and to are the same, there is no
1517 // selection.
1518 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1519 {
1520     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1521
1522     gint from = -1;
1523     gint to = -1;
1524     bool haveSelection = false;
1525
1526      if ( IsMultiLine() )
1527      {
1528          GtkTextIter ifrom, ito;
1529          if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1530          {
1531              haveSelection = true;
1532              from = gtk_text_iter_get_offset(&ifrom);
1533              to = gtk_text_iter_get_offset(&ito);
1534          }
1535      }
1536      else  // not multi-line
1537      {
1538          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1539                                                  &from, &to) )
1540          {
1541              haveSelection = true;
1542          }
1543      }
1544
1545      if (! haveSelection )
1546           from = to = GetInsertionPoint();
1547
1548      if ( from > to )
1549      {
1550          // exchange them to be compatible with wxMSW
1551          gint tmp = from;
1552          from = to;
1553          to = tmp;
1554      }
1555
1556     if ( fromOut )
1557         *fromOut = from;
1558     if ( toOut )
1559         *toOut = to;
1560 }
1561
1562
1563 bool wxTextCtrl::IsEditable() const
1564 {
1565     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1566
1567     if ( IsMultiLine() )
1568     {
1569         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1570     }
1571     else
1572     {
1573         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1574     }
1575 }
1576
1577 bool wxTextCtrl::IsModified() const
1578 {
1579     return m_modified;
1580 }
1581
1582 void wxTextCtrl::Clear()
1583 {
1584     SetValue( wxEmptyString );
1585 }
1586
1587 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1588 {
1589     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1590
1591     if ( key_event.GetKeyCode() == WXK_RETURN )
1592     {
1593         if ( HasFlag(wxTE_PROCESS_ENTER) )
1594         {
1595             wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1596             event.SetEventObject(this);
1597             event.SetString(GetValue());
1598             if ( GetEventHandler()->ProcessEvent(event) )
1599                 return;
1600         }
1601
1602         // FIXME: this is not the right place to do it, wxDialog::OnCharHook()
1603         //        probably is
1604         if ( IsSingleLine() )
1605         {
1606             // This will invoke the dialog default action, such
1607             // as the clicking the default button.
1608
1609             wxWindow *top_frame = m_parent;
1610             while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1611                 top_frame = top_frame->GetParent();
1612
1613             if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1614             {
1615                 GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1616
1617                 if (window->default_widget)
1618                 {
1619                     gtk_widget_activate (window->default_widget);
1620                     return;
1621                 }
1622             }
1623         }
1624     }
1625
1626     key_event.Skip();
1627 }
1628
1629 GtkWidget* wxTextCtrl::GetConnectWidget()
1630 {
1631     return GTK_WIDGET(m_text);
1632 }
1633
1634 GdkWindow *wxTextCtrl::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
1635 {
1636     if ( IsMultiLine() )
1637     {
1638         return gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1639                                         GTK_TEXT_WINDOW_TEXT );
1640     }
1641     else
1642     {
1643         return GTK_ENTRY(m_text)->text_area;
1644     }
1645 }
1646
1647 // the font will change for subsequent text insertiongs
1648 bool wxTextCtrl::SetFont( const wxFont &font )
1649 {
1650     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1651
1652     if ( !wxTextCtrlBase::SetFont(font) )
1653     {
1654         // font didn't change, nothing to do
1655         return false;
1656     }
1657
1658     if ( IsMultiLine() )
1659     {
1660         SetUpdateFont(true);
1661
1662         m_defaultStyle.SetFont(font);
1663
1664         ChangeFontGlobally();
1665     }
1666
1667     return true;
1668 }
1669
1670 void wxTextCtrl::ChangeFontGlobally()
1671 {
1672     // this method is very inefficient and hence should be called as rarely as
1673     // possible!
1674     //
1675     // TODO: it can be implemented much more efficiently for GTK2
1676     wxASSERT_MSG( IsMultiLine(),
1677                   _T("shouldn't be called for single line controls") );
1678
1679     wxString value = GetValue();
1680     if ( !value.empty() )
1681     {
1682         SetUpdateFont(false);
1683
1684         Clear();
1685         AppendText(value);
1686     }
1687 }
1688
1689 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1690 {
1691     if ( !wxControl::SetForegroundColour(colour) )
1692         return false;
1693
1694     // update default fg colour too
1695     m_defaultStyle.SetTextColour(colour);
1696
1697     return true;
1698 }
1699
1700 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1701 {
1702     wxCHECK_MSG( m_text != NULL, false, wxT("invalid text ctrl") );
1703
1704     if ( !wxControl::SetBackgroundColour( colour ) )
1705         return false;
1706
1707     if (!m_backgroundColour.Ok())
1708         return false;
1709
1710     // change active background color too
1711     m_defaultStyle.SetBackgroundColour( colour );
1712
1713     return true;
1714 }
1715
1716 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1717 {
1718     if ( IsMultiLine() )
1719     {
1720         if ( style.IsDefault() )
1721         {
1722             // nothing to do
1723             return true;
1724         }
1725
1726         gint l = gtk_text_buffer_get_char_count( m_buffer );
1727
1728         wxCHECK_MSG( start >= 0 && end <= l, false,
1729                      _T("invalid range in wxTextCtrl::SetStyle") );
1730
1731         GtkTextIter starti, endi;
1732         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1733         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1734
1735         // use the attributes from style which are set in it and fall back
1736         // first to the default style and then to the text control default
1737         // colours for the others
1738         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1739
1740         wxGtkTextApplyTagsFromAttr( m_widget, m_buffer, attr, &starti, &endi );
1741
1742         return true;
1743     }
1744
1745     // else single line
1746     // cannot do this for GTK+'s Entry widget
1747     return false;
1748 }
1749
1750 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1751 {
1752     gtk_widget_modify_style(m_text, style);
1753 }
1754
1755 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1756 {
1757     Cut();
1758 }
1759
1760 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1761 {
1762     Copy();
1763 }
1764
1765 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1766 {
1767     Paste();
1768 }
1769
1770 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1771 {
1772     Undo();
1773 }
1774
1775 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1776 {
1777     Redo();
1778 }
1779
1780 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1781 {
1782     event.Enable( CanCut() );
1783 }
1784
1785 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1786 {
1787     event.Enable( CanCopy() );
1788 }
1789
1790 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1791 {
1792     event.Enable( CanPaste() );
1793 }
1794
1795 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1796 {
1797     event.Enable( CanUndo() );
1798 }
1799
1800 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1801 {
1802     event.Enable( CanRedo() );
1803 }
1804
1805 wxSize wxTextCtrl::DoGetBestSize() const
1806 {
1807     // FIXME should be different for multi-line controls...
1808     wxSize ret( wxControl::DoGetBestSize() );
1809     wxSize best(80, ret.y);
1810     CacheBestSize(best);
1811     return best;
1812 }
1813
1814 // ----------------------------------------------------------------------------
1815 // freeze/thaw
1816 // ----------------------------------------------------------------------------
1817
1818 void wxTextCtrl::Freeze()
1819 {
1820     wxCHECK_RET(m_text != NULL, wxT("invalid text ctrl"));
1821
1822     if ( HasFlag(wxTE_MULTILINE) )
1823     {
1824         if (m_frozenness++ == 0)
1825         {
1826             // freeze textview updates and remove buffer
1827             g_signal_connect (m_text, "expose_event",
1828                               G_CALLBACK (gtk_text_exposed_callback), this);
1829             g_signal_connect (m_widget, "expose_event",
1830                               G_CALLBACK (gtk_text_exposed_callback), this);
1831             gtk_widget_set_sensitive(m_widget, false);
1832             g_object_ref(m_buffer);
1833             GtkTextBuffer* buf_new = gtk_text_buffer_new(NULL);
1834             GtkTextMark* mark = GTK_TEXT_VIEW(m_text)->first_para_mark;
1835             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), buf_new);
1836             // gtk_text_view_set_buffer adds its own reference
1837             g_object_unref(buf_new);
1838             // This mark should be deleted when the buffer is changed,
1839             // but it's not (in GTK+ up to at least 2.10.6).
1840             // Otherwise these anonymous marks start to build up in the buffer,
1841             // and Freeze takes longer and longer each time it is called.
1842             if (GTK_IS_TEXT_MARK(mark) && !gtk_text_mark_get_deleted(mark))
1843                 gtk_text_buffer_delete_mark(m_buffer, mark);
1844         }
1845     }
1846 }
1847
1848 void wxTextCtrl::Thaw()
1849 {
1850     if ( HasFlag(wxTE_MULTILINE) )
1851     {
1852         wxCHECK_RET(m_frozenness != 0, _T("Thaw() without matching Freeze()"));
1853
1854         if (--m_frozenness == 0)
1855         {
1856             // Reattach buffer and thaw textview updates
1857             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1858             g_object_unref(m_buffer);
1859             gtk_widget_set_sensitive(m_widget, true);
1860             g_signal_handlers_disconnect_by_func (m_widget,
1861                     (gpointer) gtk_text_exposed_callback, this);
1862             g_signal_handlers_disconnect_by_func (m_text,
1863                     (gpointer) gtk_text_exposed_callback, this);
1864         }
1865     }
1866 }
1867
1868 // ----------------------------------------------------------------------------
1869 // wxTextUrlEvent passing if style & wxTE_AUTO_URL
1870 // ----------------------------------------------------------------------------
1871
1872 // FIXME: when dragging on a link the sample gets an "Unknown event".
1873 // This might be an excessive event from us or a buggy wxMouseEvent::Moving() or
1874 // a buggy sample, or something else
1875 void wxTextCtrl::OnUrlMouseEvent(wxMouseEvent& event)
1876 {
1877     event.Skip();
1878     if( !HasFlag(wxTE_AUTO_URL) )
1879         return;
1880
1881     gint x, y;
1882     GtkTextIter start, end;
1883     GtkTextTag *tag = gtk_text_tag_table_lookup(gtk_text_buffer_get_tag_table(m_buffer),
1884                                                 "wxUrl");
1885
1886     gtk_text_view_window_to_buffer_coords(GTK_TEXT_VIEW(m_text), GTK_TEXT_WINDOW_WIDGET,
1887                                           event.GetX(), event.GetY(), &x, &y);
1888
1889     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &end, x, y);
1890     if (!gtk_text_iter_has_tag(&end, tag))
1891     {
1892         gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1893                               GTK_TEXT_WINDOW_TEXT), m_gdkXTermCursor);
1894         return;
1895     }
1896
1897     gdk_window_set_cursor(gtk_text_view_get_window(GTK_TEXT_VIEW(m_text),
1898                           GTK_TEXT_WINDOW_TEXT), m_gdkHandCursor);
1899
1900     start = end;
1901     if(!gtk_text_iter_begins_tag(&start, tag))
1902         gtk_text_iter_backward_to_tag_toggle(&start, tag);
1903     if(!gtk_text_iter_ends_tag(&end, tag))
1904         gtk_text_iter_forward_to_tag_toggle(&end, tag);
1905
1906     // Native context menu is probably not desired on an URL.
1907     // Consider making this dependant on ProcessEvent(wxTextUrlEvent) return value
1908     if(event.GetEventType() == wxEVT_RIGHT_DOWN)
1909         event.Skip(false);
1910
1911     wxTextUrlEvent url_event(m_windowId, event,
1912                              gtk_text_iter_get_offset(&start),
1913                              gtk_text_iter_get_offset(&end));
1914
1915     InitCommandEvent(url_event);
1916     // Is that a good idea? Seems not (pleasure with gtk_text_view_start_selection_drag)
1917     //event.Skip(!GetEventHandler()->ProcessEvent(url_event));
1918     GetEventHandler()->ProcessEvent(url_event);
1919 }
1920
1921 bool wxTextCtrl::GTKProcessEvent(wxEvent& event) const
1922 {
1923     bool rc = wxTextCtrlBase::GTKProcessEvent(event);
1924
1925     // GtkTextView starts a drag operation when left mouse button is pressed
1926     // and ends it when it is released and if it doesn't get the release event
1927     // the next click on a control results in an assertion failure inside
1928     // gtk_text_view_start_selection_drag() which simply *kills* the program
1929     // without anything we can do about it, so always let GTK+ have this event
1930     return rc && (IsSingleLine() || event.GetEventType() != wxEVT_LEFT_UP);
1931 }
1932
1933 // static
1934 wxVisualAttributes
1935 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1936 {
1937     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1938 }