src/gtk1/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  11 #pragma implementation "textctrl.h"
  12 #endif
  13
  14 // For compilers that support precompilation, includes "wx.h".
  15 #include "wx/wxprec.h"
  16
  17 #include "wx/textctrl.h"
  18 #include "wx/utils.h"
  19 #include "wx/intl.h"
  20 #include "wx/log.h"
  21 #include "wx/settings.h"
  22 #include "wx/panel.h"
  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 #include "wx/math.h"
  30
  31 #include "wx/gtk/private.h"
  32 #include <gdk/gdkkeysyms.h>
  33
  34 //-----------------------------------------------------------------------------
  35 // idle system
  36 //-----------------------------------------------------------------------------
  37
  38 extern void wxapp_install_idle_handler();
  39 extern bool g_isIdle;
  40
  41 //-----------------------------------------------------------------------------
  42 // data
  43 //-----------------------------------------------------------------------------
  44
  45 extern bool       g_blockEventsOnDrag;
  46 extern wxCursor   g_globalCursor;
  47 extern wxWindowGTK *g_delayedFocus;
  48
  49 // ----------------------------------------------------------------------------
  50 // helpers
  51 // ----------------------------------------------------------------------------
  52
  53 #ifdef __WXGTK20__
  54 static void wxGtkTextApplyTagsFromAttr(GtkTextBuffer *text_buffer,
  55                                        const wxTextAttr& attr,
  56                                        GtkTextIter *start,
  57                                        GtkTextIter *end)
  58 {
  59     static gchar buf[1024];
  60     GtkTextTag *tag;
  61
  62     if (attr.HasFont())
  63     {
  64         char *font_string;
  65         PangoFontDescription *font_description = attr.GetFont().GetNativeFontInfo()->description;
  66         font_string = pango_font_description_to_string(font_description);
  67         g_snprintf(buf, sizeof(buf), "WXFONT %s", font_string);
  68         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  69                                          buf );
  70         if (!tag)
  71             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  72                                               "font-desc", font_description,
  73                                               NULL );
  74         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  75         g_free (font_string);
  76     }
  77
  78     if (attr.HasTextColour())
  79     {
  80         GdkColor *colFg = attr.GetTextColour().GetColor();
  81         g_snprintf(buf, sizeof(buf), "WXFORECOLOR %d %d %d",
  82                    colFg->red, colFg->green, colFg->blue);
  83         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  84                                          buf );
  85         if (!tag)
  86             tag = gtk_text_buffer_create_tag( text_buffer, buf,
  87                                               "foreground-gdk", colFg, NULL );
  88         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
  89     }
  90
  91     if (attr.HasBackgroundColour())
  92     {
  93         GdkColor *colBg = attr.GetBackgroundColour().GetColor();
  94         g_snprintf(buf, sizeof(buf), "WXBACKCOLOR %d %d %d",
  95                    colBg->red, colBg->green, colBg->blue);
  96         tag = gtk_text_tag_table_lookup( gtk_text_buffer_get_tag_table( text_buffer ),
  97                                          buf );
  98         if (!tag)
  99             tag = gtk_text_buffer_create_tag( text_buffer, buf,
 100                                               "background-gdk", colBg, NULL );
 101         gtk_text_buffer_apply_tag (text_buffer, tag, start, end);
 102     }
 103 }
 104
 105 static void wxGtkTextInsert(GtkWidget *text,
 106                             GtkTextBuffer *text_buffer,
 107                             const wxTextAttr& attr,
 108                             wxCharBuffer buffer)
 109
 110 {
 111     gint start_offset;
 112     GtkTextIter iter, start;
 113
 114     gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,
 115                                      gtk_text_buffer_get_insert (text_buffer) );
 116     start_offset = gtk_text_iter_get_offset (&iter);
 117     gtk_text_buffer_insert( text_buffer, &iter, buffer, strlen(buffer) );
 118
 119     gtk_text_buffer_get_iter_at_offset (text_buffer, &start, start_offset);
 120
 121     wxGtkTextApplyTagsFromAttr(text_buffer, attr, &start, &iter);
 122 }
 123 #else
 124 static void wxGtkTextInsert(GtkWidget *text,
 125                             const wxTextAttr& attr,
 126                             const char *txt,
 127                             size_t len)
 128 {
 129     GdkFont *font = attr.HasFont() ? attr.GetFont().GetInternalFont()
 130                                    : NULL;
 131
 132     GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
 133                                            : NULL;
 134
 135     GdkColor *colBg = attr.HasBackgroundColour()
 136                         ? attr.GetBackgroundColour().GetColor()
 137                         : NULL;
 138
 139     gtk_text_insert( GTK_TEXT(text), font, colFg, colBg, txt, len );
 140 }
 141 #endif // GTK 1.x
 142
 143 // ----------------------------------------------------------------------------
 144 // "insert_text" for GtkEntry
 145 // ----------------------------------------------------------------------------
 146
 147 static void
 148 gtk_insert_text_callback(GtkEditable *editable,
 149                          const gchar *new_text,
 150                          gint new_text_length,
 151                          gint *position,
 152                          wxTextCtrl *win)
 153 {
 154     if (g_isIdle)
 155         wxapp_install_idle_handler();
 156
 157     // we should only be called if we have a max len limit at all
 158     GtkEntry *entry = GTK_ENTRY (editable);
 159
 160     wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
 161
 162     // check that we don't overflow the max length limit
 163     //
 164     // FIXME: this doesn't work when we paste a string which is going to be
 165     //        truncated
 166     if ( entry->text_length == entry->text_max_length )
 167     {
 168         // we don't need to run the base class version at all
 169         gtk_signal_emit_stop_by_name(GTK_OBJECT(editable), "insert_text");
 170
 171         // remember that the next changed signal is to be ignored to avoid
 172         // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
 173         win->IgnoreNextTextUpdate();
 174
 175         // and generate the correct one ourselves
 176         wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
 177         event.SetEventObject(win);
 178         event.SetString(win->GetValue());
 179         win->GetEventHandler()->ProcessEvent( event );
 180     }
 181 }
 182
 183 //-----------------------------------------------------------------------------
 184 //  "changed"
 185 //-----------------------------------------------------------------------------
 186
 187 static void
 188 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
 189 {
 190     if ( win->IgnoreTextUpdate() )
 191         return;
 192
 193     if (!win->m_hasVMT) return;
 194
 195     if (g_isIdle)
 196         wxapp_install_idle_handler();
 197
 198     win->SetModified();
 199 #ifndef __WXGTK20__
 200     win->UpdateFontIfNeeded();
 201 #endif // !__WXGTK20__
 202
 203     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
 204     event.SetEventObject( win );
 205     event.SetString( win->GetValue() );
 206     win->GetEventHandler()->ProcessEvent( event );
 207 }
 208
 209 //-----------------------------------------------------------------------------
 210 // "expose_event" from scrolled window and textview
 211 //-----------------------------------------------------------------------------
 212
 213 #ifdef __WXGTK20__
 214 static gboolean
 215 gtk_text_exposed_callback( GtkWidget *widget, GdkEventExpose *event, wxTextCtrl *win )
 216 {
 217     return TRUE;
 218 }
 219 #endif
 220
 221 //-----------------------------------------------------------------------------
 222 // "changed" from vertical scrollbar
 223 //-----------------------------------------------------------------------------
 224
 225 #ifndef __WXGTK20__
 226 static void
 227 gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
 228 {
 229     if (!win->m_hasVMT) return;
 230
 231     if (g_isIdle)
 232         wxapp_install_idle_handler();
 233
 234     win->CalculateScrollbar();
 235 }
 236 #endif
 237
 238 // ----------------------------------------------------------------------------
 239 // redraw callback for multiline text
 240 // ----------------------------------------------------------------------------
 241
 242 #ifndef __WXGTK20__
 243
 244 // redrawing a GtkText from inside a wxYield() call results in crashes (the
 245 // text sample shows it in its "Add lines" command which shows wxProgressDialog
 246 // which implicitly calls wxYield()) so we override GtkText::draw() and simply
 247 // don't do anything if we're inside wxYield()
 248
 249 extern bool wxIsInsideYield;
 250
 251 extern "C" {
 252     typedef void (*GtkDrawCallback)(GtkWidget *widget, GdkRectangle *rect);
 253 }
 254
 255 static GtkDrawCallback gs_gtk_text_draw = NULL;
 256
 257 extern "C"
 258 void wxgtk_text_draw( GtkWidget *widget, GdkRectangle *rect)
 259 {
 260     if ( !wxIsInsideYield )
 261     {
 262         wxCHECK_RET( gs_gtk_text_draw != wxgtk_text_draw,
 263                      _T("infinite recursion in wxgtk_text_draw aborted") );
 264
 265         gs_gtk_text_draw(widget, rect);
 266     }
 267 }
 268
 269 #endif // __WXGTK20__
 270
 271 //-----------------------------------------------------------------------------
 272 //  wxTextCtrl
 273 //-----------------------------------------------------------------------------
 274
 275 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
 276
 277 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 278     EVT_CHAR(wxTextCtrl::OnChar)
 279
 280     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 281     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 282     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 283     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 284     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 285
 286     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 287     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 288     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 289     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 290     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 291 END_EVENT_TABLE()
 292
 293 void wxTextCtrl::Init()
 294 {
 295     m_ignoreNextUpdate =
 296     m_modified = FALSE;
 297     SetUpdateFont(FALSE);
 298     m_text =
 299     m_vScrollbar = (GtkWidget *)NULL;
 300 #ifdef __WXGTK20__
 301     m_frozenness = 0;
 302 #endif
 303 }
 304
 305 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 306                         wxWindowID id,
 307                         const wxString &value,
 308                         const wxPoint &pos,
 309                         const wxSize &size,
 310                         long style,
 311                         const wxValidator& validator,
 312                         const wxString &name )
 313 {
 314     Init();
 315
 316     Create( parent, id, value, pos, size, style, validator, name );
 317 }
 318
 319 bool wxTextCtrl::Create( wxWindow *parent,
 320                          wxWindowID id,
 321                          const wxString &value,
 322                          const wxPoint &pos,
 323                          const wxSize &size,
 324                          long style,
 325                          const wxValidator& validator,
 326                          const wxString &name )
 327 {
 328     m_needParent = TRUE;
 329     m_acceptsFocus = TRUE;
 330
 331     if (!PreCreation( parent, pos, size ) ||
 332         !CreateBase( parent, id, pos, size, style, validator, name ))
 333     {
 334         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 335         return FALSE;
 336     }
 337
 338
 339     m_vScrollbarVisible = FALSE;
 340
 341     bool multi_line = (style & wxTE_MULTILINE) != 0;
 342
 343     if (multi_line)
 344     {
 345 #ifdef __WXGTK20__
 346         // Create view
 347         m_text = gtk_text_view_new();
 348
 349         m_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 350
 351         // create scrolled window
 352         m_widget = gtk_scrolled_window_new( NULL, NULL );
 353         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 354                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 355
 356         // Insert view into scrolled window
 357         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 358
 359         // Global settings which can be overridden by tags, I guess.
 360         if (HasFlag( wxHSCROLL ) || HasFlag( wxTE_DONTWRAP ))
 361             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_NONE );
 362         else
 363             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_WORD );
 364
 365         if (!HasFlag(wxNO_BORDER))
 366             gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(m_widget), GTK_SHADOW_IN );
 367
 368         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 369 #else
 370         // create our control ...
 371         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 372
 373         // ... and put into the upper left hand corner of the table
 374         bool bHasHScrollbar = FALSE;
 375         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 376         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 377         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 378                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 379                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 380                        0, 0);
 381
 382         // always wrap words
 383         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 384
 385         // finally, put the vertical scrollbar in the upper right corner
 386         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 387         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 388         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 389                      GTK_FILL,
 390                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 391                      0, 0);
 392 #endif
 393     }
 394     else
 395     {
 396         // a single-line text control: no need for scrollbars
 397         m_widget =
 398         m_text = gtk_entry_new();
 399
 400         if (style & wxNO_BORDER)
 401             g_object_set( GTK_ENTRY(m_text), "has-frame", FALSE, NULL );
 402     }
 403
 404     m_parent->DoAddChild( this );
 405
 406     m_focusWidget = m_text;
 407
 408     PostCreation(size);
 409
 410     if (multi_line)
 411         gtk_widget_show(m_text);
 412
 413 #ifndef __WXGTK20__
 414     if (multi_line)
 415     {
 416         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 417           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 418
 419         // only initialize gs_gtk_text_draw once, starting from the next the
 420         // klass::draw will already be wxgtk_text_draw
 421         if ( !gs_gtk_text_draw )
 422         {
 423             GtkDrawCallback&
 424                 draw = GTK_WIDGET_CLASS(GTK_OBJECT(m_text)->klass)->draw;
 425
 426             gs_gtk_text_draw = draw;
 427
 428             draw = wxgtk_text_draw;
 429         }
 430     }
 431 #endif // GTK+ 1.x
 432
 433     if (!value.IsEmpty())
 434     {
 435 #ifdef __WXGTK20__
 436         SetValue( value );
 437 #else
 438
 439 #if !GTK_CHECK_VERSION(1, 2, 0)
 440         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 441         // gtk_editable_insert_text()
 442         gtk_widget_realize(m_text);
 443 #endif // GTK 1.0
 444
 445         gint tmp = 0;
 446 #if wxUSE_UNICODE
 447         wxWX2MBbuf val = value.mbc_str();
 448         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 449 #else
 450         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 451 #endif
 452
 453         if (multi_line)
 454         {
 455             // Bring editable's cursor uptodate. Bug in GTK.
 456             SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 457         }
 458
 459 #endif
 460     }
 461
 462     if (style & wxTE_PASSWORD)
 463     {
 464         if (!multi_line)
 465             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 466     }
 467
 468     if (style & wxTE_READONLY)
 469     {
 470         if (!multi_line)
 471             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 472 #ifdef __WXGTK20__
 473         else
 474             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 475 #else
 476     }
 477     else
 478     {
 479         if (multi_line)
 480             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 481 #endif
 482     }
 483
 484 #ifdef __WXGTK20__
 485     if (multi_line)
 486     {
 487         if (style & wxTE_RIGHT)
 488             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_RIGHT );
 489         else if (style & wxTE_CENTRE)
 490             gtk_text_view_set_justification( GTK_TEXT_VIEW(m_text), GTK_JUSTIFY_CENTER );
 491         // Left justify (alignment) is the default and we don't need to apply GTK_JUSTIFY_LEFT
 492     }
 493     else
 494     {
 495 #ifdef __WXGTK24__
 496         // gtk_entry_set_alignment was introduced in gtk+-2.3.5
 497         if (!gtk_check_version(2,4,0))
 498         {
 499             if (style & wxTE_RIGHT)
 500                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 1.0 );
 501             else if (style & wxTE_CENTRE)
 502                 gtk_entry_set_alignment( GTK_ENTRY(m_text), 0.5 );
 503         }
 504 #endif
 505     }
 506 #endif // __WXGTK20__
 507
 508     // We want to be notified about text changes.
 509 #ifdef __WXGTK20__
 510     if (multi_line)
 511     {
 512         g_signal_connect( G_OBJECT(m_buffer), "changed",
 513             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 514     }
 515     else
 516 #endif
 517
 518     {
 519         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 520             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 521     }
 522
 523     m_cursor = wxCursor( wxCURSOR_IBEAM );
 524
 525     wxTextAttr attrDef(GetForegroundColour(), GetBackgroundColour(), GetFont());
 526     SetDefaultStyle( attrDef );
 527
 528     return TRUE;
 529 }
 530
 531
 532 void wxTextCtrl::CalculateScrollbar()
 533 {
 534 #ifndef __WXGTK20__
 535     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 536
 537     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 538
 539     if (adj->upper - adj->page_size < 0.8)
 540     {
 541         if (m_vScrollbarVisible)
 542         {
 543             gtk_widget_hide( m_vScrollbar );
 544             m_vScrollbarVisible = FALSE;
 545         }
 546     }
 547     else
 548     {
 549         if (!m_vScrollbarVisible)
 550         {
 551             gtk_widget_show( m_vScrollbar );
 552             m_vScrollbarVisible = TRUE;
 553         }
 554     }
 555 #endif
 556 }
 557
 558 wxString wxTextCtrl::GetValue() const
 559 {
 560     wxCHECK_MSG( m_text != NULL, wxT(""), wxT("invalid text ctrl") );
 561
 562     wxString tmp;
 563     if (m_windowStyle & wxTE_MULTILINE)
 564     {
 565 #ifdef __WXGTK20__
 566         GtkTextIter start;
 567         gtk_text_buffer_get_start_iter( m_buffer, &start );
 568         GtkTextIter end;
 569         gtk_text_buffer_get_end_iter( m_buffer, &end );
 570         gchar *text = gtk_text_buffer_get_text( m_buffer, &start, &end, TRUE );
 571
 572 #if wxUSE_UNICODE
 573         wxWCharBuffer buffer( wxConvUTF8.cMB2WX( text ) );
 574 #else
 575         wxCharBuffer buffer( wxConvLocal.cWC2WX( wxConvUTF8.cMB2WC( text ) ) );
 576 #endif
 577         if ( buffer )
 578             tmp = buffer;
 579
 580         g_free( text );
 581 #else
 582         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 583         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 584         tmp = text;
 585         g_free( text );
 586 #endif
 587     }
 588     else
 589     {
 590         tmp = wxGTK_CONV_BACK( gtk_entry_get_text( GTK_ENTRY(m_text) ) );
 591     }
 592
 593     return tmp;
 594 }
 595
 596 void wxTextCtrl::SetValue( const wxString &value )
 597 {
 598     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 599
 600     if (m_windowStyle & wxTE_MULTILINE)
 601     {
 602 #ifdef __WXGTK20__
 603
 604 #if wxUSE_UNICODE
 605         wxCharBuffer buffer( wxConvUTF8.cWX2MB( value) );
 606 #else
 607         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( value ) ) );
 608 #endif
 609         if (gtk_text_buffer_get_char_count(m_buffer) != 0)
 610             IgnoreNextTextUpdate();
 611
 612         gtk_text_buffer_set_text( m_buffer, buffer, strlen(buffer) );
 613
 614 #else
 615         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 616         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 617         len = 0;
 618         gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
 619 #endif
 620     }
 621     else
 622     {
 623         gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV( value ) );
 624     }
 625
 626     // GRG, Jun/2000: Changed this after a lot of discussion in
 627     //   the lists. wxWidgets 2.2 will have a set of flags to
 628     //   customize this behaviour.
 629     SetInsertionPoint(0);
 630
 631     m_modified = FALSE;
 632 }
 633
 634 void wxTextCtrl::WriteText( const wxString &text )
 635 {
 636     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 637
 638     if ( text.empty() )
 639         return;
 640
 641     // gtk_text_changed_callback() will set m_modified to true but m_modified
 642     // shouldn't be changed by the program writing to the text control itself,
 643     // so save the old value and restore when we're done
 644     bool oldModified = m_modified;
 645
 646     if ( m_windowStyle & wxTE_MULTILINE )
 647     {
 648 #ifdef __WXGTK20__
 649
 650 #if wxUSE_UNICODE
 651         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 652 #else
 653         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 654 #endif
 655         if ( !buffer )
 656         {
 657             // what else can we do? at least don't crash...
 658             return;
 659         }
 660
 661         // TODO: Call whatever is needed to delete the selection.
 662         wxGtkTextInsert( m_text, m_buffer, m_defaultStyle, buffer );
 663
 664         GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(m_widget) );
 665         // Scroll to cursor, but only if scrollbar thumb is at the very bottom
 666         if ( adj->value == adj->upper - adj->page_size )
 667         {
 668             gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text),
 669                     gtk_text_buffer_get_insert( m_buffer ), 0.0, FALSE, 0.0, 1.0 );
 670         }
 671 #else // GTK 1.x
 672         // After cursor movements, gtk_text_get_point() is wrong by one.
 673         gtk_text_set_point( GTK_TEXT(m_text), GET_EDITABLE_POS(m_text) );
 674
 675         // always use m_defaultStyle, even if it is empty as otherwise
 676         // resetting the style and appending some more text wouldn't work: if
 677         // we don't specify the style explicitly, the old style would be used
 678         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 679         wxGtkTextInsert(m_text, m_defaultStyle, text.c_str(), text.Len());
 680
 681         // we called wxGtkTextInsert with correct font, no need to do anything
 682         // in UpdateFontIfNeeded() any longer
 683         if ( !text.empty() )
 684         {
 685             SetUpdateFont(FALSE);
 686         }
 687
 688         // Bring editable's cursor back uptodate.
 689         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 690 #endif // GTK 1.x/2.0
 691     }
 692     else // single line
 693     {
 694         // First remove the selection if there is one
 695         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 696
 697         // This moves the cursor pos to behind the inserted text.
 698         gint len = GET_EDITABLE_POS(m_text);
 699
 700 #ifdef __WXGTK20__
 701
 702 #if wxUSE_UNICODE
 703         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 704 #else
 705         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 706 #endif
 707         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 708
 709 #else
 710         gtk_editable_insert_text( GTK_EDITABLE(m_text), text.c_str(), text.Len(), &len );
 711 #endif
 712
 713         // Bring entry's cursor uptodate.
 714         gtk_entry_set_position( GTK_ENTRY(m_text), len );
 715     }
 716
 717     m_modified = oldModified;
 718 }
 719
 720 void wxTextCtrl::AppendText( const wxString &text )
 721 {
 722     SetInsertionPointEnd();
 723     WriteText( text );
 724 }
 725
 726 wxString wxTextCtrl::GetLineText( long lineNo ) const
 727 {
 728     if (m_windowStyle & wxTE_MULTILINE)
 729     {
 730 #ifndef __WXGTK20__
 731         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 732         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 733
 734         if (text)
 735         {
 736             wxString buf(wxT(""));
 737             long i;
 738             int currentLine = 0;
 739             for (i = 0; currentLine != lineNo && text[i]; i++ )
 740                 if (text[i] == '\n')
 741             currentLine++;
 742             // Now get the text
 743             int j;
 744             for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 745                 buf += text[i];
 746
 747             g_free( text );
 748             return buf;
 749         }
 750         else
 751         {
 752             return wxEmptyString;
 753         }
 754 #else
 755         GtkTextIter line;
 756         gtk_text_buffer_get_iter_at_line(m_buffer,&line,lineNo);
 757         GtkTextIter end;
 758         gtk_text_buffer_get_end_iter(m_buffer,&end );
 759         gchar *text = gtk_text_buffer_get_text(m_buffer,&line,&end,TRUE);
 760         wxString result(wxGTK_CONV_BACK(text));
 761         g_free(text);
 762         return result.BeforeFirst(wxT('\n'));
 763 #endif
 764     }
 765     else
 766     {
 767         if (lineNo == 0) return GetValue();
 768         return wxEmptyString;
 769     }
 770 }
 771
 772 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 773 {
 774   /* If you implement this, don't forget to update the documentation!
 775    * (file docs/latex/wx/text.tex) */
 776     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 777 }
 778
 779 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 780 {
 781     if ( m_windowStyle & wxTE_MULTILINE )
 782     {
 783         wxString text = GetValue();
 784
 785         // cast to prevent warning. But pos really should've been unsigned.
 786         if( (unsigned long)pos > text.Len()  )
 787             return FALSE;
 788
 789         *x=0;   // First Col
 790         *y=0;   // First Line
 791
 792         const wxChar* stop = text.c_str() + pos;
 793         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 794         {
 795             if (*p == wxT('\n'))
 796             {
 797                 (*y)++;
 798                 *x=0;
 799             }
 800             else
 801                 (*x)++;
 802         }
 803     }
 804     else // single line control
 805     {
 806         if ( pos <= GTK_ENTRY(m_text)->text_length )
 807         {
 808             *y = 0;
 809             *x = pos;
 810         }
 811         else
 812         {
 813             // index out of bounds
 814             return FALSE;
 815         }
 816     }
 817
 818     return TRUE;
 819 }
 820
 821 long wxTextCtrl::XYToPosition(long x, long y ) const
 822 {
 823     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 824
 825     long pos=0;
 826     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 827
 828     pos += x;
 829     return pos;
 830 }
 831
 832 int wxTextCtrl::GetLineLength(long lineNo) const
 833 {
 834     wxString str = GetLineText (lineNo);
 835     return (int) str.Length();
 836 }
 837
 838 int wxTextCtrl::GetNumberOfLines() const
 839 {
 840     if (m_windowStyle & wxTE_MULTILINE)
 841     {
 842 #ifdef __WXGTK20__
 843         return gtk_text_buffer_get_line_count( m_buffer );
 844 #else
 845         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 846         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 847
 848         if (text)
 849         {
 850             int currentLine = 0;
 851             for (int i = 0; i < len; i++ )
 852             {
 853                 if (text[i] == '\n')
 854                     currentLine++;
 855             }
 856             g_free( text );
 857
 858             // currentLine is 0 based, add 1 to get number of lines
 859             return currentLine + 1;
 860         }
 861         else
 862         {
 863             return 0;
 864         }
 865 #endif
 866     }
 867     else
 868     {
 869         return 1;
 870     }
 871 }
 872
 873 void wxTextCtrl::SetInsertionPoint( long pos )
 874 {
 875     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 876
 877     if ( IsMultiLine() )
 878     {
 879 #ifdef __WXGTK20__
 880         GtkTextIter iter;
 881         gtk_text_buffer_get_iter_at_offset( m_buffer, &iter, pos );
 882         gtk_text_buffer_place_cursor( m_buffer, &iter );
 883         gtk_text_view_scroll_mark_onscreen
 884         (
 885             GTK_TEXT_VIEW(m_text),
 886             gtk_text_buffer_get_insert( m_buffer )
 887         );
 888 #else // GTK+ 1.x
 889         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 890           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 891
 892         /* we fake a set_point by inserting and deleting. as the user
 893            isn't supposed to get to know about this non-sense, we
 894            disconnect so that no events are sent to the user program. */
 895
 896         gint tmp = (gint)pos;
 897         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 898         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 899
 900         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 901           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 902
 903         // bring editable's cursor uptodate. Bug in GTK.
 904         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 905 #endif // GTK+ 2/1
 906     }
 907     else
 908     {
 909         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 910
 911         // Bring editable's cursor uptodate. Bug in GTK.
 912         SET_EDITABLE_POS(m_text, (guint32)pos);
 913     }
 914 }
 915
 916 void wxTextCtrl::SetInsertionPointEnd()
 917 {
 918     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 919
 920     if (m_windowStyle & wxTE_MULTILINE)
 921     {
 922 #ifdef __WXGTK20__
 923         GtkTextIter end;
 924         gtk_text_buffer_get_end_iter( m_buffer, &end );
 925         gtk_text_buffer_place_cursor( m_buffer, &end );
 926 #else
 927         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 928 #endif
 929     }
 930     else
 931     {
 932         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 933     }
 934 }
 935
 936 void wxTextCtrl::SetEditable( bool editable )
 937 {
 938     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 939
 940     if (m_windowStyle & wxTE_MULTILINE)
 941     {
 942 #ifdef __WXGTK20__
 943         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
 944 #else
 945         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 946 #endif
 947     }
 948     else
 949     {
 950         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 951     }
 952 }
 953
 954 bool wxTextCtrl::Enable( bool enable )
 955 {
 956     if (!wxWindowBase::Enable(enable))
 957     {
 958         // nothing to do
 959         return FALSE;
 960     }
 961
 962     if (m_windowStyle & wxTE_MULTILINE)
 963     {
 964 #ifdef __WXGTK20__
 965         SetEditable( enable );
 966 #else
 967         gtk_text_set_editable( GTK_TEXT(m_text), enable );
 968         OnParentEnable(enable);
 969 #endif
 970     }
 971     else
 972     {
 973         gtk_widget_set_sensitive( m_text, enable );
 974     }
 975
 976     return TRUE;
 977 }
 978
 979 // wxGTK-specific: called recursively by Enable,
 980 // to give widgets an oppprtunity to correct their colours after they
 981 // have been changed by Enable
 982 void wxTextCtrl::OnParentEnable( bool enable )
 983 {
 984     // If we have a custom background colour, we use this colour in both
 985     // disabled and enabled mode, or we end up with a different colour under the
 986     // text.
 987     wxColour oldColour = GetBackgroundColour();
 988     if (oldColour.Ok())
 989     {
 990         // Need to set twice or it'll optimize the useful stuff out
 991         if (oldColour == * wxWHITE)
 992             SetBackgroundColour(*wxBLACK);
 993         else
 994             SetBackgroundColour(*wxWHITE);
 995         SetBackgroundColour(oldColour);
 996     }
 997 }
 998
 999 void wxTextCtrl::MarkDirty()
1000 {
1001     m_modified = TRUE;
1002 }
1003
1004 void wxTextCtrl::DiscardEdits()
1005 {
1006     m_modified = FALSE;
1007 }
1008
1009 // ----------------------------------------------------------------------------
1010 // max text length support
1011 // ----------------------------------------------------------------------------
1012
1013 void wxTextCtrl::IgnoreNextTextUpdate()
1014 {
1015     m_ignoreNextUpdate = TRUE;
1016 }
1017
1018 bool wxTextCtrl::IgnoreTextUpdate()
1019 {
1020     if ( m_ignoreNextUpdate )
1021     {
1022         m_ignoreNextUpdate = FALSE;
1023
1024         return TRUE;
1025     }
1026
1027     return FALSE;
1028 }
1029
1030 void wxTextCtrl::SetMaxLength(unsigned long len)
1031 {
1032     if ( !HasFlag(wxTE_MULTILINE) )
1033     {
1034         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
1035
1036         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
1037         // we had tried to enter more text than allowed by max text length and
1038         // the text wasn't really changed
1039         //
1040         // to detect this and generate TEXT_MAXLEN event instead of
1041         // TEXT_CHANGED one in this case we also catch "insert_text" signal
1042         //
1043         // when max len is set to 0 we disconnect our handler as it means that
1044         // we shouldn't check anything any more
1045         if ( len )
1046         {
1047             gtk_signal_connect( GTK_OBJECT(m_text),
1048                                 "insert_text",
1049                                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
1050                                 (gpointer)this);
1051         }
1052         else // no checking
1053         {
1054             gtk_signal_disconnect_by_func
1055             (
1056                 GTK_OBJECT(m_text),
1057                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
1058                 (gpointer)this
1059             );
1060         }
1061     }
1062 }
1063
1064 void wxTextCtrl::SetSelection( long from, long to )
1065 {
1066     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1067
1068     if (from == -1 && to == -1)
1069     {
1070         from = 0;
1071         to = GetValue().Length();
1072     }
1073
1074 #ifndef __WXGTK20__
1075     if ( (m_windowStyle & wxTE_MULTILINE) &&
1076          !GTK_TEXT(m_text)->line_start_cache )
1077     {
1078         // tell the programmer that it didn't work
1079         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
1080         return;
1081     }
1082 #endif
1083
1084     if (m_windowStyle & wxTE_MULTILINE)
1085     {
1086 #ifdef __WXGTK20__
1087         GtkTextIter fromi, toi;
1088         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1089         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1090
1091         gtk_text_buffer_place_cursor( m_buffer, &toi );
1092         gtk_text_buffer_move_mark_by_name( m_buffer, "selection_bound", &fromi );
1093 #else
1094         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1095 #endif
1096     }
1097     else
1098     {
1099         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1100     }
1101 }
1102
1103 void wxTextCtrl::ShowPosition( long pos )
1104 {
1105     if (m_windowStyle & wxTE_MULTILINE)
1106     {
1107 #ifdef __WXGTK20__
1108         GtkTextIter iter;
1109         gtk_text_buffer_get_start_iter( m_buffer, &iter );
1110         gtk_text_iter_set_offset( &iter, pos );
1111         GtkTextMark *mark = gtk_text_buffer_create_mark( m_buffer, NULL, &iter, TRUE );
1112         gtk_text_view_scroll_to_mark( GTK_TEXT_VIEW(m_text), mark, 0.0, FALSE, 0.0, 0.0 );
1113 #else // GTK 1.x
1114         GtkAdjustment *vp = GTK_TEXT(m_text)->vadj;
1115         float totalLines =  (float) GetNumberOfLines();
1116         long posX;
1117         long posY;
1118         PositionToXY(pos, &posX, &posY);
1119         float posLine = (float) posY;
1120         float p = (posLine/totalLines)*(vp->upper - vp->lower) + vp->lower;
1121         gtk_adjustment_set_value(GTK_TEXT(m_text)->vadj, p);
1122 #endif // GTK 1.x/2.x
1123     }
1124 }
1125
1126 #ifdef __WXGTK20__
1127
1128 wxTextCtrlHitTestResult
1129 wxTextCtrl::HitTest(const wxPoint& pt, long *pos) const
1130 {
1131     if ( !IsMultiLine() )
1132     {
1133         // not supported
1134         return wxTE_HT_UNKNOWN;
1135     }
1136
1137     int x, y;
1138     gtk_text_view_window_to_buffer_coords
1139     (
1140         GTK_TEXT_VIEW(m_text),
1141         GTK_TEXT_WINDOW_TEXT,
1142         pt.x, pt.y,
1143         &x, &y
1144     );
1145
1146     GtkTextIter iter;
1147     gtk_text_view_get_iter_at_location(GTK_TEXT_VIEW(m_text), &iter, x, y);
1148     if ( pos )
1149         *pos = gtk_text_iter_get_offset(&iter);
1150
1151     return wxTE_HT_ON_TEXT;
1152 }
1153
1154 #endif // __WXGTK20__
1155
1156 long wxTextCtrl::GetInsertionPoint() const
1157 {
1158     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1159
1160 #ifdef __WXGTK20__
1161     if (m_windowStyle & wxTE_MULTILINE)
1162     {
1163         // There is no direct accessor for the cursor, but
1164         // internally, the cursor is the "mark" called
1165         // "insert" in the text view's btree structure.
1166
1167         GtkTextMark *mark = gtk_text_buffer_get_insert( m_buffer );
1168         GtkTextIter cursor;
1169         gtk_text_buffer_get_iter_at_mark( m_buffer, &cursor, mark );
1170
1171         return gtk_text_iter_get_offset( &cursor );
1172     }
1173     else
1174 #endif
1175     {
1176     return (long) GET_EDITABLE_POS(m_text);
1177     }
1178 }
1179
1180 long wxTextCtrl::GetLastPosition() const
1181 {
1182     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1183
1184     int pos = 0;
1185
1186     if (m_windowStyle & wxTE_MULTILINE)
1187     {
1188 #ifdef __WXGTK20__
1189         GtkTextIter end;
1190         gtk_text_buffer_get_end_iter( m_buffer, &end );
1191
1192         pos = gtk_text_iter_get_offset( &end );
1193 #else
1194         pos = gtk_text_get_length( GTK_TEXT(m_text) );
1195 #endif
1196     }
1197     else
1198     {
1199         pos = GTK_ENTRY(m_text)->text_length;
1200     }
1201
1202     return (long)pos;
1203 }
1204
1205 void wxTextCtrl::Remove( long from, long to )
1206 {
1207     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1208
1209 #ifdef __WXGTK20__
1210     if (m_windowStyle & wxTE_MULTILINE)
1211     {
1212         GtkTextIter fromi, toi;
1213         gtk_text_buffer_get_iter_at_offset( m_buffer, &fromi, from );
1214         gtk_text_buffer_get_iter_at_offset( m_buffer, &toi, to );
1215
1216         gtk_text_buffer_delete( m_buffer, &fromi, &toi );
1217     }
1218     else // single line
1219 #endif
1220     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1221 }
1222
1223 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1224 {
1225     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1226
1227     Remove( from, to );
1228
1229     if (!value.IsEmpty())
1230     {
1231 #ifdef __WXGTK20__
1232         SetInsertionPoint( from );
1233         WriteText( value );
1234 #else // GTK 1.x
1235         gint pos = (gint)from;
1236 #if wxUSE_UNICODE
1237         wxWX2MBbuf buf = value.mbc_str();
1238         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
1239 #else
1240         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
1241 #endif // wxUSE_UNICODE
1242 #endif // GTK 1.x/2.x
1243     }
1244 }
1245
1246 void wxTextCtrl::Cut()
1247 {
1248     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1249
1250 #ifdef __WXGTK20__
1251     if (m_windowStyle & wxTE_MULTILINE)
1252         g_signal_emit_by_name(m_text, "cut-clipboard");
1253     else
1254 #endif
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 #ifdef __WXGTK20__
1263     if (m_windowStyle & wxTE_MULTILINE)
1264         g_signal_emit_by_name(m_text, "copy-clipboard");
1265     else
1266 #endif
1267         gtk_editable_copy_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1268 }
1269
1270 void wxTextCtrl::Paste()
1271 {
1272     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1273
1274 #ifdef __WXGTK20__
1275     if (m_windowStyle & wxTE_MULTILINE)
1276         g_signal_emit_by_name(m_text, "paste-clipboard");
1277     else
1278 #endif
1279         gtk_editable_paste_clipboard(GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG);
1280 }
1281
1282 // Undo/redo
1283 void wxTextCtrl::Undo()
1284 {
1285     // TODO
1286     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1287 }
1288
1289 void wxTextCtrl::Redo()
1290 {
1291     // TODO
1292     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1293 }
1294
1295 bool wxTextCtrl::CanUndo() const
1296 {
1297     // TODO
1298     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1299     return FALSE;
1300 }
1301
1302 bool wxTextCtrl::CanRedo() const
1303 {
1304     // TODO
1305     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1306     return FALSE;
1307 }
1308
1309 // If the return values from and to are the same, there is no
1310 // selection.
1311 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1312 {
1313     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1314
1315     gint from = -1;
1316     gint to = -1;
1317     bool haveSelection = FALSE;
1318
1319 #ifdef __WXGTK20__
1320      if (m_windowStyle & wxTE_MULTILINE)
1321      {
1322          GtkTextIter ifrom, ito;
1323          if ( gtk_text_buffer_get_selection_bounds(m_buffer, &ifrom, &ito) )
1324          {
1325              haveSelection = TRUE;
1326              from = gtk_text_iter_get_offset(&ifrom);
1327              to = gtk_text_iter_get_offset(&ito);
1328          }
1329      }
1330      else  // not multi-line
1331      {
1332          if ( gtk_editable_get_selection_bounds( GTK_EDITABLE(m_text),
1333                                                  &from, &to) )
1334          {
1335              haveSelection = TRUE;
1336          }
1337      }
1338 #else //  not GTK2
1339      if ( (GTK_EDITABLE(m_text)->has_selection) )
1340      {
1341          haveSelection = TRUE;
1342          from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
1343          to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
1344      }
1345 #endif
1346
1347      if (! haveSelection )
1348           from = to = GetInsertionPoint();
1349
1350      if ( from > to )
1351      {
1352          // exchange them to be compatible with wxMSW
1353          gint tmp = from;
1354          from = to;
1355          to = tmp;
1356      }
1357
1358     if ( fromOut )
1359         *fromOut = from;
1360     if ( toOut )
1361         *toOut = to;
1362 }
1363
1364
1365 bool wxTextCtrl::IsEditable() const
1366 {
1367     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1368
1369 #ifdef __WXGTK20__
1370     if (m_windowStyle & wxTE_MULTILINE)
1371     {
1372         return gtk_text_view_get_editable(GTK_TEXT_VIEW(m_text));
1373     }
1374     else
1375     {
1376         return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1377     }
1378 #else
1379     return GTK_EDITABLE(m_text)->editable;
1380 #endif
1381 }
1382
1383 bool wxTextCtrl::IsModified() const
1384 {
1385     return m_modified;
1386 }
1387
1388 void wxTextCtrl::Clear()
1389 {
1390     SetValue( wxT("") );
1391 }
1392
1393 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1394 {
1395     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1396
1397     if ((key_event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1398     {
1399         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1400         event.SetEventObject(this);
1401         event.SetString(GetValue());
1402         if (GetEventHandler()->ProcessEvent(event)) return;
1403     }
1404
1405     if ((key_event.GetKeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1406     {
1407         // This will invoke the dialog default action, such
1408         // as the clicking the default button.
1409
1410         wxWindow *top_frame = m_parent;
1411         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1412             top_frame = top_frame->GetParent();
1413
1414         if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1415         {
1416             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1417
1418             if (window->default_widget)
1419             {
1420                 gtk_widget_activate (window->default_widget);
1421                 return;
1422             }
1423         }
1424     }
1425
1426     key_event.Skip();
1427 }
1428
1429 GtkWidget* wxTextCtrl::GetConnectWidget()
1430 {
1431     return GTK_WIDGET(m_text);
1432 }
1433
1434 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1435 {
1436     if (m_windowStyle & wxTE_MULTILINE)
1437     {
1438 #ifdef __WXGTK20__
1439         return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT );  // pure guesswork
1440 #else
1441         return (window == GTK_TEXT(m_text)->text_area);
1442 #endif
1443     }
1444     else
1445     {
1446         return (window == GTK_ENTRY(m_text)->text_area);
1447     }
1448 }
1449
1450 // the font will change for subsequent text insertiongs
1451 bool wxTextCtrl::SetFont( const wxFont &font )
1452 {
1453     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1454
1455     if ( !wxTextCtrlBase::SetFont(font) )
1456     {
1457         // font didn't change, nothing to do
1458         return FALSE;
1459     }
1460
1461     if ( m_windowStyle & wxTE_MULTILINE )
1462     {
1463         SetUpdateFont(TRUE);
1464
1465         m_defaultStyle.SetFont(font);
1466
1467         ChangeFontGlobally();
1468     }
1469
1470     return TRUE;
1471 }
1472
1473 void wxTextCtrl::ChangeFontGlobally()
1474 {
1475     // this method is very inefficient and hence should be called as rarely as
1476     // possible!
1477     //
1478     // TODO: it can be implemented much more efficiently for GTK2
1479 #ifndef __WXGTK20__
1480     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
1481
1482                   _T("shouldn't be called for single line controls") );
1483 #else
1484     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE),
1485                   _T("shouldn't be called for single line controls") );
1486 #endif
1487
1488     wxString value = GetValue();
1489     if ( !value.IsEmpty() )
1490     {
1491         SetUpdateFont(FALSE);
1492
1493         Clear();
1494         AppendText(value);
1495     }
1496 }
1497
1498 #ifndef __WXGTK20__
1499
1500 void wxTextCtrl::UpdateFontIfNeeded()
1501 {
1502     if ( m_updateFont )
1503         ChangeFontGlobally();
1504 }
1505
1506 #endif // GTK+ 1.x
1507
1508 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1509 {
1510     if ( !wxControl::SetForegroundColour(colour) )
1511         return FALSE;
1512
1513     // update default fg colour too
1514     m_defaultStyle.SetTextColour(colour);
1515
1516     return TRUE;
1517 }
1518
1519 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1520 {
1521     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1522
1523     if ( !wxControl::SetBackgroundColour( colour ) )
1524         return FALSE;
1525
1526 #ifndef __WXGTK20__
1527     if (!m_widget->window)
1528         return FALSE;
1529 #endif
1530
1531     if (!m_backgroundColour.Ok())
1532         return FALSE;
1533
1534     if (m_windowStyle & wxTE_MULTILINE)
1535     {
1536 #ifndef __WXGTK20__
1537         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1538         if (!window)
1539             return FALSE;
1540         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1541         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1542         gdk_window_clear( window );
1543 #endif
1544     }
1545
1546     // change active background color too
1547     m_defaultStyle.SetBackgroundColour( colour );
1548
1549     return TRUE;
1550 }
1551
1552 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1553 {
1554     if ( m_windowStyle & wxTE_MULTILINE )
1555     {
1556         if ( style.IsDefault() )
1557         {
1558             // nothing to do
1559             return TRUE;
1560         }
1561 #ifdef __WXGTK20__
1562         gint l = gtk_text_buffer_get_char_count( m_buffer );
1563
1564         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1565                      _T("invalid range in wxTextCtrl::SetStyle") );
1566
1567         GtkTextIter starti, endi;
1568         gtk_text_buffer_get_iter_at_offset( m_buffer, &starti, start );
1569         gtk_text_buffer_get_iter_at_offset( m_buffer, &endi, end );
1570
1571         // use the attributes from style which are set in it and fall back
1572         // first to the default style and then to the text control default
1573         // colours for the others
1574         wxTextAttr attr = wxTextAttr::Combine(style, m_defaultStyle, this);
1575
1576         wxGtkTextApplyTagsFromAttr( m_buffer, attr, &starti, &endi );
1577
1578          return TRUE;
1579 #else
1580         // VERY dirty way to do that - removes the required text and re-adds it
1581         // with styling (FIXME)
1582
1583         gint l = gtk_text_get_length( GTK_TEXT(m_text) );
1584
1585         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1586                      _T("invalid range in wxTextCtrl::SetStyle") );
1587
1588         gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
1589         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
1590         wxString tmp(text,*wxConvCurrent);
1591         g_free( text );
1592
1593         gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
1594         gtk_editable_set_position( GTK_EDITABLE(m_text), start );
1595
1596 #if wxUSE_UNICODE
1597         wxWX2MBbuf buf = tmp.mbc_str();
1598         const char *txt = buf;
1599         size_t txtlen = strlen(buf);
1600 #else
1601         const char *txt = tmp;
1602         size_t txtlen = tmp.length();
1603 #endif
1604
1605         // use the attributes from style which are set in it and fall back
1606         // first to the default style and then to the text control default
1607         // colours for the others
1608         wxGtkTextInsert(m_text,
1609                         wxTextAttr::Combine(style, m_defaultStyle, this),
1610                         txt,
1611                         txtlen);
1612
1613         /* does not seem to help under GTK+ 1.2 !!!
1614         gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
1615         SetInsertionPoint( old_pos );
1616 #endif
1617         return TRUE;
1618     }
1619     else // singe line
1620     {
1621         // cannot do this for GTK+'s Entry widget
1622         return FALSE;
1623     }
1624 }
1625
1626 void wxTextCtrl::DoApplyWidgetStyle(GtkRcStyle *style)
1627 {
1628     gtk_widget_modify_style(m_text, style);
1629 }
1630
1631 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1632 {
1633     Cut();
1634 }
1635
1636 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1637 {
1638     Copy();
1639 }
1640
1641 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1642 {
1643     Paste();
1644 }
1645
1646 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1647 {
1648     Undo();
1649 }
1650
1651 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1652 {
1653     Redo();
1654 }
1655
1656 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1657 {
1658     event.Enable( CanCut() );
1659 }
1660
1661 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1662 {
1663     event.Enable( CanCopy() );
1664 }
1665
1666 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1667 {
1668     event.Enable( CanPaste() );
1669 }
1670
1671 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1672 {
1673     event.Enable( CanUndo() );
1674 }
1675
1676 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1677 {
1678     event.Enable( CanRedo() );
1679 }
1680
1681 void wxTextCtrl::OnInternalIdle()
1682 {
1683     wxCursor cursor = m_cursor;
1684     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1685
1686     if (cursor.Ok())
1687     {
1688 #ifndef __WXGTK20__
1689         GdkWindow *window = (GdkWindow*) NULL;
1690         if (HasFlag(wxTE_MULTILINE))
1691             window = GTK_TEXT(m_text)->text_area;
1692         else
1693             window = GTK_ENTRY(m_text)->text_area;
1694
1695         if (window)
1696             gdk_window_set_cursor( window, cursor.GetCursor() );
1697
1698         if (!g_globalCursor.Ok())
1699             cursor = *wxSTANDARD_CURSOR;
1700
1701         window = m_widget->window;
1702         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1703             gdk_window_set_cursor( window, cursor.GetCursor() );
1704 #endif
1705     }
1706
1707     if (g_delayedFocus == this)
1708     {
1709         if (GTK_WIDGET_REALIZED(m_widget))
1710         {
1711             gtk_widget_grab_focus( m_widget );
1712             g_delayedFocus = NULL;
1713         }
1714     }
1715
1716     if (wxUpdateUIEvent::CanUpdate(this))
1717         UpdateWindowUI(wxUPDATE_UI_FROMIDLE);
1718 }
1719
1720 wxSize wxTextCtrl::DoGetBestSize() const
1721 {
1722     // FIXME should be different for multi-line controls...
1723     wxSize ret( wxControl::DoGetBestSize() );
1724     wxSize best(80, ret.y);
1725     CacheBestSize(best);
1726     return best;
1727 }
1728
1729 // ----------------------------------------------------------------------------
1730 // freeze/thaw
1731 // ----------------------------------------------------------------------------
1732
1733 void wxTextCtrl::Freeze()
1734 {
1735     if ( HasFlag(wxTE_MULTILINE) )
1736     {
1737 #ifdef __WXGTK20__
1738         if ( !m_frozenness++ )
1739         {
1740             // freeze textview updates and remove buffer
1741             g_signal_connect( G_OBJECT(m_text), "expose_event",
1742                 GTK_SIGNAL_FUNC(gtk_text_exposed_callback), (gpointer)this);
1743             g_signal_connect( G_OBJECT(m_widget), "expose_event",
1744                 GTK_SIGNAL_FUNC(gtk_text_exposed_callback), (gpointer)this);
1745             gtk_widget_set_sensitive(m_widget, false);
1746             g_object_ref(m_buffer);
1747             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), gtk_text_buffer_new(NULL));
1748     }
1749 #else
1750         gtk_text_freeze(GTK_TEXT(m_text));
1751 #endif
1752     }
1753 }
1754
1755 void wxTextCtrl::Thaw()
1756 {
1757     if ( HasFlag(wxTE_MULTILINE) )
1758     {
1759 #ifdef __WXGTK20__
1760         wxASSERT_MSG( m_frozenness > 0, _T("Thaw() without matching Freeze()") );
1761
1762         if ( !--m_frozenness )
1763         {
1764             // Reattach buffer and thaw textview updates
1765             gtk_text_view_set_buffer(GTK_TEXT_VIEW(m_text), m_buffer);
1766             g_object_unref(m_buffer);
1767             gtk_widget_set_sensitive(m_widget, true);
1768             g_signal_handlers_disconnect_by_func(m_widget, (gpointer)gtk_text_exposed_callback, this);
1769             g_signal_handlers_disconnect_by_func(m_text, (gpointer)gtk_text_exposed_callback, this);
1770         }
1771 #else
1772         GTK_TEXT(m_text)->vadj->value = 0.0;
1773
1774         gtk_text_thaw(GTK_TEXT(m_text));
1775 #endif
1776     }
1777 }
1778
1779 // ----------------------------------------------------------------------------
1780 // scrolling
1781 // ----------------------------------------------------------------------------
1782
1783 GtkAdjustment *wxTextCtrl::GetVAdj() const
1784 {
1785     if ( !IsMultiLine() )
1786         return NULL;
1787
1788 #ifdef __WXGTK20__
1789     return gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(m_widget));
1790 #else
1791     return GTK_TEXT(m_text)->vadj;
1792 #endif
1793 }
1794
1795 bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
1796 {
1797     float value = adj->value + diff;
1798
1799     if ( value < 0 )
1800         value = 0;
1801
1802     float upper = adj->upper - adj->page_size;
1803     if ( value > upper )
1804         value = upper;
1805
1806     // did we noticeably change the scroll position?
1807     if ( fabs(adj->value - value) < 0.2 )
1808     {
1809         // well, this is what Robert does in wxScrollBar, so it must be good...
1810         return FALSE;
1811     }
1812
1813     adj->value = value;
1814
1815 #ifdef __WXGTK20__
1816     gtk_adjustment_value_changed(GTK_ADJUSTMENT(adj));
1817 #else
1818     gtk_signal_emit_by_name(GTK_OBJECT(adj), "value_changed");
1819 #endif
1820
1821     return TRUE;
1822 }
1823
1824 bool wxTextCtrl::ScrollLines(int lines)
1825 {
1826     GtkAdjustment *adj = GetVAdj();
1827     if ( !adj )
1828         return FALSE;
1829
1830 #ifdef __WXGTK20__
1831     int diff = (int)ceil(lines*adj->step_increment);
1832 #else
1833     // this is hardcoded to 10 in GTK+ 1.2 (great idea)
1834     int diff = 10*lines;
1835 #endif
1836
1837     return DoScroll(adj, diff);
1838 }
1839
1840 bool wxTextCtrl::ScrollPages(int pages)
1841 {
1842     GtkAdjustment *adj = GetVAdj();
1843     if ( !adj )
1844         return FALSE;
1845
1846     return DoScroll(adj, (int)ceil(pages*adj->page_increment));
1847 }
1848
1849
1850 // static
1851 wxVisualAttributes
1852 wxTextCtrl::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
1853 {
1854     return GetDefaultAttributesFromGTKWidget(gtk_entry_new, true);
1855 }