src/gtk/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        textctrl.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling, Vadim Zeitlin
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "textctrl.h"
  12 #endif
  13
  14 #include "wx/textctrl.h"
  15 #include "wx/utils.h"
  16 #include "wx/intl.h"
  17 #include "wx/log.h"
  18 #include "wx/settings.h"
  19 #include "wx/panel.h"
  20 #include "wx/strconv.h"
  21
  22 #include <sys/types.h>
  23 #include <sys/stat.h>
  24 #include <ctype.h>
  25 #include <math.h>               // for fabs
  26
  27 #include "wx/gtk/private.h"
  28 #include <gdk/gdkkeysyms.h>
  29
  30 //-----------------------------------------------------------------------------
  31 // idle system
  32 //-----------------------------------------------------------------------------
  33
  34 extern void wxapp_install_idle_handler();
  35 extern bool g_isIdle;
  36
  37 //-----------------------------------------------------------------------------
  38 // data
  39 //-----------------------------------------------------------------------------
  40
  41 extern bool       g_blockEventsOnDrag;
  42 extern wxCursor   g_globalCursor;
  43 extern wxWindowGTK *g_delayedFocus;
  44
  45 // ----------------------------------------------------------------------------
  46 // helpers
  47 // ----------------------------------------------------------------------------
  48
  49 #ifndef __WXGTK20__
  50 static void wxGtkTextInsert(GtkWidget *text,
  51                             const wxTextAttr& attr,
  52                             const char *txt,
  53                             size_t len)
  54 {
  55     GdkFont *font = attr.HasFont() ? attr.GetFont().GetInternalFont()
  56                                    : NULL;
  57
  58     GdkColor *colFg = attr.HasTextColour() ? attr.GetTextColour().GetColor()
  59                                            : NULL;
  60
  61     GdkColor *colBg = attr.HasBackgroundColour()
  62                         ? attr.GetBackgroundColour().GetColor()
  63                         : NULL;
  64
  65     gtk_text_insert( GTK_TEXT(text), font, colFg, colBg, txt, len );
  66 }
  67 #endif // GTK 1.x
  68
  69 // ----------------------------------------------------------------------------
  70 // "insert_text" for GtkEntry
  71 // ----------------------------------------------------------------------------
  72
  73 static void
  74 gtk_insert_text_callback(GtkEditable *editable,
  75                          const gchar *new_text,
  76                          gint new_text_length,
  77                          gint *position,
  78                          wxTextCtrl *win)
  79 {
  80     if (g_isIdle)
  81         wxapp_install_idle_handler();
  82
  83     // we should only be called if we have a max len limit at all
  84     GtkEntry *entry = GTK_ENTRY (editable);
  85
  86     wxCHECK_RET( entry->text_max_length, _T("shouldn't be called") );
  87
  88     // check that we don't overflow the max length limit
  89     //
  90     // FIXME: this doesn't work when we paste a string which is going to be
  91     //        truncated
  92     if ( entry->text_length == entry->text_max_length )
  93     {
  94         // we don't need to run the base class version at all
  95         gtk_signal_emit_stop_by_name(GTK_OBJECT(editable), "insert_text");
  96
  97         // remember that the next changed signal is to be ignored to avoid
  98         // generating a dummy wxEVT_COMMAND_TEXT_UPDATED event
  99         win->IgnoreNextTextUpdate();
 100
 101         // and generate the correct one ourselves
 102         wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, win->GetId());
 103         event.SetEventObject(win);
 104         event.SetString(win->GetValue());
 105         win->GetEventHandler()->ProcessEvent( event );
 106     }
 107 }
 108
 109 //-----------------------------------------------------------------------------
 110 //  "changed"
 111 //-----------------------------------------------------------------------------
 112
 113 static void
 114 gtk_text_changed_callback( GtkWidget *widget, wxTextCtrl *win )
 115 {
 116     if ( win->IgnoreTextUpdate() )
 117         return;
 118
 119     if (!win->m_hasVMT) return;
 120
 121     if (g_isIdle)
 122         wxapp_install_idle_handler();
 123
 124     win->SetModified();
 125     win->UpdateFontIfNeeded();
 126
 127     wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, win->GetId() );
 128     event.SetEventObject( win );
 129     event.SetString( win->GetValue() );
 130     win->GetEventHandler()->ProcessEvent( event );
 131 }
 132
 133 //-----------------------------------------------------------------------------
 134 // "changed" from vertical scrollbar
 135 //-----------------------------------------------------------------------------
 136
 137 #ifndef __WXGTK20__
 138 static void
 139 gtk_scrollbar_changed_callback( GtkWidget *WXUNUSED(widget), wxTextCtrl *win )
 140 {
 141     if (!win->m_hasVMT) return;
 142
 143     if (g_isIdle)
 144         wxapp_install_idle_handler();
 145
 146     win->CalculateScrollbar();
 147 }
 148 #endif
 149
 150 // ----------------------------------------------------------------------------
 151 // redraw callback for multiline text
 152 // ----------------------------------------------------------------------------
 153
 154 #ifndef __WXGTK20__
 155
 156 // redrawing a GtkText from inside a wxYield() call results in crashes (the
 157 // text sample shows it in its "Add lines" command which shows wxProgressDialog
 158 // which implicitly calls wxYield()) so we override GtkText::draw() and simply
 159 // don't do anything if we're inside wxYield()
 160
 161 extern bool wxIsInsideYield;
 162
 163 extern "C" {
 164     typedef void (*GtkDrawCallback)(GtkWidget *widget, GdkRectangle *rect);
 165 }
 166
 167 static GtkDrawCallback gs_gtk_text_draw = NULL;
 168
 169 extern "C"
 170 void wxgtk_text_draw( GtkWidget *widget, GdkRectangle *rect)
 171 {
 172     if ( !wxIsInsideYield )
 173     {
 174         wxCHECK_RET( gs_gtk_text_draw != wxgtk_text_draw,
 175                      _T("infinite recursion in wxgtk_text_draw aborted") );
 176
 177         gs_gtk_text_draw(widget, rect);
 178     }
 179 }
 180
 181 #endif // __WXGTK20__
 182
 183 //-----------------------------------------------------------------------------
 184 //  wxTextCtrl
 185 //-----------------------------------------------------------------------------
 186
 187 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl,wxControl)
 188
 189 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 190     EVT_CHAR(wxTextCtrl::OnChar)
 191
 192     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 193     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 194     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 195     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 196     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 197
 198     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 199     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 200     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 201     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 202     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 203 END_EVENT_TABLE()
 204
 205 void wxTextCtrl::Init()
 206 {
 207     m_ignoreNextUpdate =
 208     m_modified = FALSE;
 209     m_updateFont = FALSE;
 210     m_text =
 211     m_vScrollbar = (GtkWidget *)NULL;
 212 }
 213
 214 wxTextCtrl::wxTextCtrl( wxWindow *parent,
 215                         wxWindowID id,
 216                         const wxString &value,
 217                         const wxPoint &pos,
 218                         const wxSize &size,
 219                         long style,
 220                         const wxValidator& validator,
 221                         const wxString &name )
 222 {
 223     Init();
 224
 225     Create( parent, id, value, pos, size, style, validator, name );
 226 }
 227
 228 bool wxTextCtrl::Create( wxWindow *parent,
 229                          wxWindowID id,
 230                          const wxString &value,
 231                          const wxPoint &pos,
 232                          const wxSize &size,
 233                          long style,
 234                          const wxValidator& validator,
 235                          const wxString &name )
 236 {
 237     m_needParent = TRUE;
 238     m_acceptsFocus = TRUE;
 239
 240     if (!PreCreation( parent, pos, size ) ||
 241         !CreateBase( parent, id, pos, size, style, validator, name ))
 242     {
 243         wxFAIL_MSG( wxT("wxTextCtrl creation failed") );
 244         return FALSE;
 245     }
 246
 247
 248     m_vScrollbarVisible = FALSE;
 249
 250     bool multi_line = (style & wxTE_MULTILINE) != 0;
 251
 252 #ifdef __WXGTK20__
 253     GtkTextBuffer *buffer = NULL;
 254 #endif
 255
 256     if (multi_line)
 257     {
 258 #ifdef __WXGTK20__
 259         // Create view
 260         m_text = gtk_text_view_new();
 261
 262         buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 263
 264         // create scrolled window
 265         m_widget = gtk_scrolled_window_new( NULL, NULL );
 266         gtk_scrolled_window_set_policy( GTK_SCROLLED_WINDOW( m_widget ),
 267                                         GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC );
 268
 269         // Insert view into scrolled window
 270         gtk_container_add( GTK_CONTAINER(m_widget), m_text );
 271
 272         // Global settings which can be overridden by tags, I guess.
 273         if (HasFlag( wxHSCROLL ))
 274             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_NONE );
 275         else
 276             gtk_text_view_set_wrap_mode( GTK_TEXT_VIEW( m_text ), GTK_WRAP_WORD );
 277
 278         if (!HasFlag(wxNO_BORDER))
 279             gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(m_widget), GTK_SHADOW_IN );
 280 #else
 281         // create our control ...
 282         m_text = gtk_text_new( (GtkAdjustment *) NULL, (GtkAdjustment *) NULL );
 283
 284         // ... and put into the upper left hand corner of the table
 285         bool bHasHScrollbar = FALSE;
 286         m_widget = gtk_table_new(bHasHScrollbar ? 2 : 1, 2, FALSE);
 287         GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 288         gtk_table_attach( GTK_TABLE(m_widget), m_text, 0, 1, 0, 1,
 289                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 290                       (GtkAttachOptions)(GTK_FILL | GTK_EXPAND | GTK_SHRINK),
 291                        0, 0);
 292
 293         // always wrap words
 294         gtk_text_set_word_wrap( GTK_TEXT(m_text), TRUE );
 295
 296         // finally, put the vertical scrollbar in the upper right corner
 297         m_vScrollbar = gtk_vscrollbar_new( GTK_TEXT(m_text)->vadj );
 298         GTK_WIDGET_UNSET_FLAGS( m_vScrollbar, GTK_CAN_FOCUS );
 299         gtk_table_attach(GTK_TABLE(m_widget), m_vScrollbar, 1, 2, 0, 1,
 300                      GTK_FILL,
 301                      (GtkAttachOptions)(GTK_EXPAND | GTK_FILL | GTK_SHRINK),
 302                      0, 0);
 303 #endif
 304     }
 305     else
 306     {
 307         // a single-line text control: no need for scrollbars
 308         m_widget =
 309         m_text = gtk_entry_new();
 310     }
 311
 312     m_parent->DoAddChild( this );
 313
 314     m_focusWidget = m_text;
 315
 316     PostCreation();
 317
 318     SetFont( parent->GetFont() );
 319
 320     wxSize size_best( DoGetBestSize() );
 321     wxSize new_size( size );
 322     if (new_size.x == -1)
 323         new_size.x = size_best.x;
 324     if (new_size.y == -1)
 325         new_size.y = size_best.y;
 326     if ((new_size.x != size.x) || (new_size.y != size.y))
 327         SetSize( new_size.x, new_size.y );
 328
 329     if (multi_line)
 330         gtk_widget_show(m_text);
 331
 332 #ifndef __WXGTK20__
 333     if (multi_line)
 334     {
 335         gtk_signal_connect(GTK_OBJECT(GTK_TEXT(m_text)->vadj), "changed",
 336           (GtkSignalFunc) gtk_scrollbar_changed_callback, (gpointer) this );
 337
 338         // only initialize gs_gtk_text_draw once, starting from the next the
 339         // klass::draw will already be wxgtk_text_draw
 340         if ( !gs_gtk_text_draw )
 341         {
 342             GtkDrawCallback&
 343                 draw = GTK_WIDGET_CLASS(GTK_OBJECT(m_text)->klass)->draw;
 344
 345             gs_gtk_text_draw = draw;
 346
 347             draw = wxgtk_text_draw;
 348         }
 349     }
 350 #endif // GTK+ 1.x
 351
 352     if (!value.IsEmpty())
 353     {
 354 #ifdef __WXGTK20__
 355         SetValue( value );
 356 #else
 357
 358 #if !GTK_CHECK_VERSION(1, 2, 0)
 359         // if we don't realize it, GTK 1.0.6 dies with a SIGSEGV in
 360         // gtk_editable_insert_text()
 361         gtk_widget_realize(m_text);
 362 #endif // GTK 1.0
 363
 364         gint tmp = 0;
 365 #if wxUSE_UNICODE
 366         wxWX2MBbuf val = value.mbc_str();
 367         gtk_editable_insert_text( GTK_EDITABLE(m_text), val, strlen(val), &tmp );
 368 #else
 369         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &tmp );
 370 #endif
 371
 372         if (multi_line)
 373         {
 374             // Bring editable's cursor uptodate. Bug in GTK.
 375             SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 376         }
 377
 378 #endif
 379     }
 380
 381     if (style & wxTE_PASSWORD)
 382     {
 383         if (!multi_line)
 384             gtk_entry_set_visibility( GTK_ENTRY(m_text), FALSE );
 385     }
 386
 387     if (style & wxTE_READONLY)
 388     {
 389         if (!multi_line)
 390             gtk_entry_set_editable( GTK_ENTRY(m_text), FALSE );
 391 #ifdef __WXGTK20__
 392         else
 393             gtk_text_view_set_editable( GTK_TEXT_VIEW( m_text), FALSE);
 394     }
 395 #else
 396     }
 397     else
 398     {
 399         if (multi_line)
 400             gtk_text_set_editable( GTK_TEXT(m_text), 1 );
 401     }
 402 #endif
 403
 404     // We want to be notified about text changes.
 405 #ifdef __WXGTK20__
 406     if (multi_line)
 407     {
 408         g_signal_connect( G_OBJECT(buffer), "changed",
 409             GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 410     }
 411     else
 412 #endif
 413     {
 414     gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 415        GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 416     }
 417
 418     // we don't set a valid background colour, because the window
 419     // manager should use a default one
 420     m_backgroundColour = wxColour();
 421
 422     wxColour colFg = parent->GetForegroundColour();
 423     SetForegroundColour( colFg );
 424
 425     m_cursor = wxCursor( wxCURSOR_IBEAM );
 426
 427 #ifndef __WXGTK20__
 428     wxTextAttr attrDef( colFg, m_backgroundColour, parent->GetFont() );
 429     SetDefaultStyle( attrDef );
 430 #endif
 431
 432     Show( TRUE );
 433
 434     return TRUE;
 435 }
 436
 437 void wxTextCtrl::CalculateScrollbar()
 438 {
 439 #ifndef __WXGTK20__
 440     if ((m_windowStyle & wxTE_MULTILINE) == 0) return;
 441
 442     GtkAdjustment *adj = GTK_TEXT(m_text)->vadj;
 443
 444     if (adj->upper - adj->page_size < 0.8)
 445     {
 446         if (m_vScrollbarVisible)
 447         {
 448             gtk_widget_hide( m_vScrollbar );
 449             m_vScrollbarVisible = FALSE;
 450         }
 451     }
 452     else
 453     {
 454         if (!m_vScrollbarVisible)
 455         {
 456             gtk_widget_show( m_vScrollbar );
 457             m_vScrollbarVisible = TRUE;
 458         }
 459     }
 460 #endif
 461 }
 462
 463 wxString wxTextCtrl::GetValue() const
 464 {
 465     wxCHECK_MSG( m_text != NULL, wxT(""), wxT("invalid text ctrl") );
 466
 467     wxString tmp;
 468     if (m_windowStyle & wxTE_MULTILINE)
 469     {
 470 #ifdef __WXGTK20__
 471         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 472
 473         GtkTextIter start;
 474         gtk_text_buffer_get_start_iter( text_buffer, &start );
 475         GtkTextIter end;
 476         gtk_text_buffer_get_end_iter( text_buffer, &end );
 477         gchar *text = gtk_text_buffer_get_text( text_buffer, &start, &end, TRUE );
 478
 479 #if wxUSE_UNICODE
 480         wxWCharBuffer buffer( wxConvUTF8.cMB2WX( text ) );
 481 #else
 482         wxCharBuffer buffer( wxConvLocal.cWC2WX( wxConvUTF8.cMB2WC( text ) ) );
 483 #endif
 484         tmp = buffer;
 485
 486         g_free( text );
 487 #else
 488         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 489         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 490         tmp = text;
 491         g_free( text );
 492 #endif
 493     }
 494     else
 495     {
 496         tmp = wxGTK_CONV_BACK( gtk_entry_get_text( GTK_ENTRY(m_text) ) );
 497     }
 498
 499     return tmp;
 500 }
 501
 502 void wxTextCtrl::SetValue( const wxString &value )
 503 {
 504     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 505
 506     if (m_windowStyle & wxTE_MULTILINE)
 507     {
 508 #ifdef __WXGTK20__
 509
 510 #if wxUSE_UNICODE
 511         wxCharBuffer buffer( wxConvUTF8.cWX2MB( value) );
 512 #else
 513         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( value ) ) );
 514 #endif
 515         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 516         gtk_text_buffer_set_text( text_buffer, buffer, strlen(buffer) );
 517
 518 #else
 519         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 520         gtk_editable_delete_text( GTK_EDITABLE(m_text), 0, len );
 521         len = 0;
 522         gtk_editable_insert_text( GTK_EDITABLE(m_text), value.mbc_str(), value.Length(), &len );
 523 #endif
 524     }
 525     else
 526     {
 527         gtk_entry_set_text( GTK_ENTRY(m_text), wxGTK_CONV( value ) );
 528     }
 529
 530     // GRG, Jun/2000: Changed this after a lot of discussion in
 531     //   the lists. wxWindows 2.2 will have a set of flags to
 532     //   customize this behaviour.
 533     SetInsertionPoint(0);
 534
 535     m_modified = FALSE;
 536 }
 537
 538 void wxTextCtrl::WriteText( const wxString &text )
 539 {
 540     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 541
 542     if ( text.empty() )
 543         return;
 544
 545     if ( m_windowStyle & wxTE_MULTILINE )
 546     {
 547 #ifdef __WXGTK20__
 548
 549 #if wxUSE_UNICODE
 550         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 551 #else
 552         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 553 #endif
 554         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 555
 556         // TODO: Call whatever is needed to delete the selection.
 557         gtk_text_buffer_insert_at_cursor( text_buffer, buffer, strlen(buffer) );
 558
 559         // Scroll to cursor.
 560         GtkTextIter iter;
 561         gtk_text_buffer_get_iter_at_mark( text_buffer, &iter,  gtk_text_buffer_get_insert( text_buffer ) );
 562         gtk_text_view_scroll_to_iter( GTK_TEXT_VIEW(m_text), &iter, 0.0, FALSE, 0.0, 1.0 );
 563 #else // GTK 1.x
 564         // After cursor movements, gtk_text_get_point() is wrong by one.
 565         gtk_text_set_point( GTK_TEXT(m_text), GET_EDITABLE_POS(m_text) );
 566
 567         // always use m_defaultStyle, even if it is empty as otherwise
 568         // resetting the style and appending some more text wouldn't work: if
 569         // we don't specify the style explicitly, the old style would be used
 570         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 571         wxGtkTextInsert(m_text, m_defaultStyle, text.c_str(), text.Len());
 572
 573         // Bring editable's cursor back uptodate.
 574         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 575 #endif // GTK 1.x/2.0
 576     }
 577     else // single line
 578     {
 579         // First remove the selection if there is one
 580         gtk_editable_delete_selection( GTK_EDITABLE(m_text) );
 581
 582         // This moves the cursor pos to behind the inserted text.
 583         gint len = GET_EDITABLE_POS(m_text);
 584
 585 #ifdef __WXGTK20__
 586
 587 #if wxUSE_UNICODE
 588         wxCharBuffer buffer( wxConvUTF8.cWX2MB( text ) );
 589 #else
 590         wxCharBuffer buffer( wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ) );
 591 #endif
 592         gtk_editable_insert_text( GTK_EDITABLE(m_text), buffer, strlen(buffer), &len );
 593
 594 #else
 595         gtk_editable_insert_text( GTK_EDITABLE(m_text), text.c_str(), text.Len(), &len );
 596 #endif
 597
 598         // Bring entry's cursor uptodate.
 599         gtk_entry_set_position( GTK_ENTRY(m_text), len );
 600     }
 601
 602     m_modified = TRUE;
 603 }
 604
 605 void wxTextCtrl::AppendText( const wxString &text )
 606 {
 607     SetInsertionPointEnd();
 608     WriteText( text );
 609 }
 610
 611 wxString wxTextCtrl::GetLineText( long lineNo ) const
 612 {
 613     if (m_windowStyle & wxTE_MULTILINE)
 614     {
 615 #ifndef __WXGTK20__
 616         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 617         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 618
 619         if (text)
 620         {
 621             wxString buf(wxT(""));
 622             long i;
 623             int currentLine = 0;
 624             for (i = 0; currentLine != lineNo && text[i]; i++ )
 625                 if (text[i] == '\n')
 626             currentLine++;
 627             // Now get the text
 628             int j;
 629             for (j = 0; text[i] && text[i] != '\n'; i++, j++ )
 630                 buf += text[i];
 631
 632             g_free( text );
 633             return buf;
 634         }
 635         else
 636 #endif
 637         {
 638             return wxEmptyString;
 639         }
 640     }
 641     else
 642     {
 643         if (lineNo == 0) return GetValue();
 644         return wxEmptyString;
 645     }
 646 }
 647
 648 void wxTextCtrl::OnDropFiles( wxDropFilesEvent &WXUNUSED(event) )
 649 {
 650   /* If you implement this, don't forget to update the documentation!
 651    * (file docs/latex/wx/text.tex) */
 652     wxFAIL_MSG( wxT("wxTextCtrl::OnDropFiles not implemented") );
 653 }
 654
 655 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y ) const
 656 {
 657     if ( m_windowStyle & wxTE_MULTILINE )
 658     {
 659         wxString text = GetValue();
 660
 661         // cast to prevent warning. But pos really should've been unsigned.
 662         if( (unsigned long)pos > text.Len()  )
 663             return FALSE;
 664
 665         *x=0;   // First Col
 666         *y=0;   // First Line
 667
 668         const wxChar* stop = text.c_str() + pos;
 669         for ( const wxChar *p = text.c_str(); p < stop; p++ )
 670         {
 671             if (*p == wxT('\n'))
 672             {
 673                 (*y)++;
 674                 *x=0;
 675             }
 676             else
 677                 (*x)++;
 678         }
 679     }
 680     else // single line control
 681     {
 682         if ( pos <= GTK_ENTRY(m_text)->text_length )
 683         {
 684             *y = 0;
 685             *x = pos;
 686         }
 687         else
 688         {
 689             // index out of bounds
 690             return FALSE;
 691         }
 692     }
 693
 694     return TRUE;
 695 }
 696
 697 long wxTextCtrl::XYToPosition(long x, long y ) const
 698 {
 699     if (!(m_windowStyle & wxTE_MULTILINE)) return 0;
 700
 701     long pos=0;
 702     for( int i=0; i<y; i++ ) pos += GetLineLength(i) + 1; // one for '\n'
 703
 704     pos += x;
 705     return pos;
 706 }
 707
 708 int wxTextCtrl::GetLineLength(long lineNo) const
 709 {
 710     wxString str = GetLineText (lineNo);
 711     return (int) str.Length();
 712 }
 713
 714 int wxTextCtrl::GetNumberOfLines() const
 715 {
 716     if (m_windowStyle & wxTE_MULTILINE)
 717     {
 718 #ifdef __WXGTK20__
 719         GtkTextBuffer *buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 720
 721         return gtk_text_buffer_get_line_count( buffer );
 722 #else
 723         gint len = gtk_text_get_length( GTK_TEXT(m_text) );
 724         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), 0, len );
 725
 726         if (text)
 727         {
 728             int currentLine = 0;
 729             for (int i = 0; i < len; i++ )
 730             {
 731                 if (text[i] == '\n')
 732                     currentLine++;
 733             }
 734             g_free( text );
 735
 736             // currentLine is 0 based, add 1 to get number of lines
 737             return currentLine + 1;
 738         }
 739         else
 740         {
 741             return 0;
 742         }
 743 #endif
 744     }
 745     else
 746     {
 747         return 1;
 748     }
 749 }
 750
 751 void wxTextCtrl::SetInsertionPoint( long pos )
 752 {
 753     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 754
 755     if (m_windowStyle & wxTE_MULTILINE)
 756     {
 757 #ifdef __WXGTK20__
 758         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 759         GtkTextIter iter;
 760         gtk_text_buffer_get_iter_at_offset( text_buffer, &iter, pos );
 761         gtk_text_buffer_place_cursor( text_buffer, &iter );
 762 #else
 763         gtk_signal_disconnect_by_func( GTK_OBJECT(m_text),
 764           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 765
 766         /* we fake a set_point by inserting and deleting. as the user
 767            isn't supposed to get to know about this non-sense, we
 768            disconnect so that no events are sent to the user program. */
 769
 770         gint tmp = (gint)pos;
 771         gtk_editable_insert_text( GTK_EDITABLE(m_text), " ", 1, &tmp );
 772         gtk_editable_delete_text( GTK_EDITABLE(m_text), tmp-1, tmp );
 773
 774         gtk_signal_connect( GTK_OBJECT(m_text), "changed",
 775           GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)this);
 776
 777         // bring editable's cursor uptodate. Bug in GTK.
 778         SET_EDITABLE_POS(m_text, gtk_text_get_point( GTK_TEXT(m_text) ));
 779 #endif
 780     }
 781     else
 782     {
 783         gtk_entry_set_position( GTK_ENTRY(m_text), (int)pos );
 784
 785         // Bring editable's cursor uptodate. Bug in GTK.
 786         SET_EDITABLE_POS(m_text, (guint32)pos);
 787     }
 788 }
 789
 790 void wxTextCtrl::SetInsertionPointEnd()
 791 {
 792     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 793
 794     if (m_windowStyle & wxTE_MULTILINE)
 795     {
 796 #ifdef __WXGTK20__
 797         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 798         GtkTextIter end;
 799         gtk_text_buffer_get_end_iter( text_buffer, &end );
 800         gtk_text_buffer_place_cursor( text_buffer, &end );
 801 #else
 802         SetInsertionPoint(gtk_text_get_length(GTK_TEXT(m_text)));
 803 #endif
 804     }
 805     else
 806     {
 807         gtk_entry_set_position( GTK_ENTRY(m_text), -1 );
 808     }
 809 }
 810
 811 void wxTextCtrl::SetEditable( bool editable )
 812 {
 813     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 814
 815     if (m_windowStyle & wxTE_MULTILINE)
 816     {
 817 #ifdef __WXGTK20__
 818         gtk_text_view_set_editable( GTK_TEXT_VIEW(m_text), editable );
 819 #else
 820         gtk_text_set_editable( GTK_TEXT(m_text), editable );
 821 #endif
 822     }
 823     else
 824     {
 825         gtk_entry_set_editable( GTK_ENTRY(m_text), editable );
 826     }
 827 }
 828
 829 bool wxTextCtrl::Enable( bool enable )
 830 {
 831     if (!wxWindowBase::Enable(enable))
 832     {
 833         // nothing to do
 834         return FALSE;
 835     }
 836
 837     if (m_windowStyle & wxTE_MULTILINE)
 838     {
 839 #ifdef __WXGTK20__
 840         SetEditable( enable );
 841 #else
 842         gtk_text_set_editable( GTK_TEXT(m_text), enable );
 843         OnParentEnable(enable);
 844 #endif
 845     }
 846     else
 847     {
 848         gtk_widget_set_sensitive( m_text, enable );
 849     }
 850
 851     return TRUE;
 852 }
 853
 854 // wxGTK-specific: called recursively by Enable,
 855 // to give widgets an oppprtunity to correct their colours after they
 856 // have been changed by Enable
 857 void wxTextCtrl::OnParentEnable( bool enable )
 858 {
 859     // If we have a custom background colour, we use this colour in both
 860     // disabled and enabled mode, or we end up with a different colour under the
 861     // text.
 862     wxColour oldColour = GetBackgroundColour();
 863     if (oldColour.Ok())
 864     {
 865         // Need to set twice or it'll optimize the useful stuff out
 866         if (oldColour == * wxWHITE)
 867             SetBackgroundColour(*wxBLACK);
 868         else
 869             SetBackgroundColour(*wxWHITE);
 870         SetBackgroundColour(oldColour);
 871     }
 872 }
 873
 874 void wxTextCtrl::DiscardEdits()
 875 {
 876     m_modified = FALSE;
 877 }
 878
 879 // ----------------------------------------------------------------------------
 880 // max text length support
 881 // ----------------------------------------------------------------------------
 882
 883 void wxTextCtrl::IgnoreNextTextUpdate()
 884 {
 885     m_ignoreNextUpdate = TRUE;
 886 }
 887
 888 bool wxTextCtrl::IgnoreTextUpdate()
 889 {
 890     if ( m_ignoreNextUpdate )
 891     {
 892         m_ignoreNextUpdate = FALSE;
 893
 894         return TRUE;
 895     }
 896
 897     return FALSE;
 898 }
 899
 900 void wxTextCtrl::SetMaxLength(unsigned long len)
 901 {
 902     if ( !HasFlag(wxTE_MULTILINE) )
 903     {
 904         gtk_entry_set_max_length(GTK_ENTRY(m_text), len);
 905
 906         // there is a bug in GTK+ 1.2.x: "changed" signal is emitted even if
 907         // we had tried to enter more text than allowed by max text length and
 908         // the text wasn't really changed
 909         //
 910         // to detect this and generate TEXT_MAXLEN event instead of
 911         // TEXT_CHANGED one in this case we also catch "insert_text" signal
 912         //
 913         // when max len is set to 0 we disconnect our handler as it means that
 914         // we shouldn't check anything any more
 915         if ( len )
 916         {
 917             gtk_signal_connect( GTK_OBJECT(m_text),
 918                                 "insert_text",
 919                                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
 920                                 (gpointer)this);
 921         }
 922         else // no checking
 923         {
 924             gtk_signal_disconnect_by_func
 925             (
 926                 GTK_OBJECT(m_text),
 927                 GTK_SIGNAL_FUNC(gtk_insert_text_callback),
 928                 (gpointer)this
 929             );
 930         }
 931     }
 932 }
 933
 934 void wxTextCtrl::SetSelection( long from, long to )
 935 {
 936     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
 937
 938     if (from == -1 && to == -1)
 939     {
 940         from = 0;
 941         to = GetValue().Length();
 942     }
 943
 944 #ifndef __WXGTK20__
 945     if ( (m_windowStyle & wxTE_MULTILINE) &&
 946          !GTK_TEXT(m_text)->line_start_cache )
 947     {
 948         // tell the programmer that it didn't work
 949         wxLogDebug(_T("Can't call SetSelection() before realizing the control"));
 950         return;
 951     }
 952 #endif
 953
 954     if (m_windowStyle & wxTE_MULTILINE)
 955     {
 956 #ifdef __WXGTK20__
 957         // ????
 958 #else
 959         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 960 #endif
 961     }
 962     else
 963     {
 964         gtk_editable_select_region( GTK_EDITABLE(m_text), (gint)from, (gint)to );
 965     }
 966 }
 967
 968 void wxTextCtrl::ShowPosition( long pos )
 969 {
 970 #ifndef __WXGTK20__
 971     if (m_windowStyle & wxTE_MULTILINE)
 972     {
 973         GtkAdjustment *vp = GTK_TEXT(m_text)->vadj;
 974         float totalLines =  (float) GetNumberOfLines();
 975         long posX;
 976         long posY;
 977         PositionToXY(pos, &posX, &posY);
 978         float posLine = (float) posY;
 979         float p = (posLine/totalLines)*(vp->upper - vp->lower) + vp->lower;
 980         gtk_adjustment_set_value(GTK_TEXT(m_text)->vadj, p);
 981     }
 982 #endif
 983 }
 984
 985 long wxTextCtrl::GetInsertionPoint() const
 986 {
 987     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
 988
 989 #ifdef __WXGTK20__
 990     if (m_windowStyle & wxTE_MULTILINE)
 991     {
 992         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
 993
 994         // There is no direct accessor for the cursor, but
 995         // internally, the cursor is the "mark" called
 996         // "insert" in the text view's btree structure.
 997
 998         GtkTextMark *mark = gtk_text_buffer_get_insert( text_buffer );
 999         GtkTextIter cursor;
1000         gtk_text_buffer_get_iter_at_mark( text_buffer, &cursor, mark );
1001
1002         return gtk_text_iter_get_offset( &cursor );
1003     }
1004     else
1005 #endif
1006     {
1007     return (long) GET_EDITABLE_POS(m_text);
1008     }
1009 }
1010
1011 long wxTextCtrl::GetLastPosition() const
1012 {
1013     wxCHECK_MSG( m_text != NULL, 0, wxT("invalid text ctrl") );
1014
1015     int pos = 0;
1016
1017     if (m_windowStyle & wxTE_MULTILINE)
1018     {
1019 #ifdef __WXGTK20__
1020         GtkTextBuffer *text_buffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(m_text) );
1021         GtkTextIter end;
1022         gtk_text_buffer_get_end_iter( text_buffer, &end );
1023
1024         pos = gtk_text_iter_get_offset( &end );
1025 #else
1026         pos = gtk_text_get_length( GTK_TEXT(m_text) );
1027 #endif
1028     }
1029     else
1030     {
1031         pos = GTK_ENTRY(m_text)->text_length;
1032     }
1033
1034     return (long)pos;
1035 }
1036
1037 void wxTextCtrl::Remove( long from, long to )
1038 {
1039     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1040
1041 #ifndef __WXGTK20__
1042     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1043 #endif
1044 }
1045
1046 void wxTextCtrl::Replace( long from, long to, const wxString &value )
1047 {
1048     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1049
1050 #ifndef __WXGTK20__
1051     gtk_editable_delete_text( GTK_EDITABLE(m_text), (gint)from, (gint)to );
1052
1053     if (!value.IsEmpty())
1054     {
1055         gint pos = (gint)from;
1056 #if wxUSE_UNICODE
1057         wxWX2MBbuf buf = value.mbc_str();
1058         gtk_editable_insert_text( GTK_EDITABLE(m_text), buf, strlen(buf), &pos );
1059 #else
1060         gtk_editable_insert_text( GTK_EDITABLE(m_text), value, value.Length(), &pos );
1061 #endif
1062     }
1063 #endif
1064 }
1065
1066 void wxTextCtrl::Cut()
1067 {
1068     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1069
1070 #ifndef __WXGTK20__
1071     gtk_editable_cut_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1072 #endif
1073 }
1074
1075 void wxTextCtrl::Copy()
1076 {
1077     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1078
1079 #ifndef __WXGTK20__
1080     gtk_editable_copy_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1081 #endif
1082 }
1083
1084 void wxTextCtrl::Paste()
1085 {
1086     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1087
1088 #ifndef __WXGTK20__
1089     gtk_editable_paste_clipboard( GTK_EDITABLE(m_text) DUMMY_CLIPBOARD_ARG );
1090 #endif
1091 }
1092
1093 // Undo/redo
1094 void wxTextCtrl::Undo()
1095 {
1096     // TODO
1097     wxFAIL_MSG( wxT("wxTextCtrl::Undo not implemented") );
1098 }
1099
1100 void wxTextCtrl::Redo()
1101 {
1102     // TODO
1103     wxFAIL_MSG( wxT("wxTextCtrl::Redo not implemented") );
1104 }
1105
1106 bool wxTextCtrl::CanUndo() const
1107 {
1108     // TODO
1109     //wxFAIL_MSG( wxT("wxTextCtrl::CanUndo not implemented") );
1110     return FALSE;
1111 }
1112
1113 bool wxTextCtrl::CanRedo() const
1114 {
1115     // TODO
1116     //wxFAIL_MSG( wxT("wxTextCtrl::CanRedo not implemented") );
1117     return FALSE;
1118 }
1119
1120 // If the return values from and to are the same, there is no
1121 // selection.
1122 void wxTextCtrl::GetSelection(long* fromOut, long* toOut) const
1123 {
1124     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1125
1126     gint from, to;
1127 #ifdef __WXGTK20__
1128     if ( !gtk_editable_get_selection_bounds(GTK_EDITABLE(m_text), &from, &to) )
1129 #else
1130     if ( !(GTK_EDITABLE(m_text)->has_selection) )
1131 #endif
1132     {
1133         from =
1134         to = GetInsertionPoint();
1135     }
1136     else // got selection
1137     {
1138 #ifndef __WXGTK20__
1139         from = (long) GTK_EDITABLE(m_text)->selection_start_pos;
1140         to = (long) GTK_EDITABLE(m_text)->selection_end_pos;
1141 #endif
1142
1143         if ( from > to )
1144         {
1145             // exchange them to be compatible with wxMSW
1146             gint tmp = from;
1147             from = to;
1148             to = tmp;
1149         }
1150     }
1151
1152     if ( fromOut )
1153         *fromOut = from;
1154     if ( toOut )
1155         *toOut = to;
1156 }
1157
1158 bool wxTextCtrl::IsEditable() const
1159 {
1160     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1161
1162 #ifdef __WXGTK20__
1163     return gtk_editable_get_editable(GTK_EDITABLE(m_text));
1164 #else
1165     return GTK_EDITABLE(m_text)->editable;
1166 #endif
1167 }
1168
1169 bool wxTextCtrl::IsModified() const
1170 {
1171     return m_modified;
1172 }
1173
1174 void wxTextCtrl::Clear()
1175 {
1176     SetValue( wxT("") );
1177 }
1178
1179 void wxTextCtrl::OnChar( wxKeyEvent &key_event )
1180 {
1181     wxCHECK_RET( m_text != NULL, wxT("invalid text ctrl") );
1182
1183     if ((key_event.GetKeyCode() == WXK_RETURN) && (m_windowStyle & wxPROCESS_ENTER))
1184     {
1185         wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1186         event.SetEventObject(this);
1187         event.SetString(GetValue());
1188         if (GetEventHandler()->ProcessEvent(event)) return;
1189     }
1190
1191     if ((key_event.GetKeyCode() == WXK_RETURN) && !(m_windowStyle & wxTE_MULTILINE))
1192     {
1193         // This will invoke the dialog default action, such
1194         // as the clicking the default button.
1195
1196         wxWindow *top_frame = m_parent;
1197         while (top_frame->GetParent() && !(top_frame->IsTopLevel()))
1198             top_frame = top_frame->GetParent();
1199
1200         if (top_frame && GTK_IS_WINDOW(top_frame->m_widget))
1201         {
1202             GtkWindow *window = GTK_WINDOW(top_frame->m_widget);
1203
1204             if (window->default_widget)
1205             {
1206                 gtk_widget_activate (window->default_widget);
1207                 return;
1208             }
1209         }
1210     }
1211
1212     key_event.Skip();
1213 }
1214
1215 GtkWidget* wxTextCtrl::GetConnectWidget()
1216 {
1217     return GTK_WIDGET(m_text);
1218 }
1219
1220 bool wxTextCtrl::IsOwnGtkWindow( GdkWindow *window )
1221 {
1222     if (m_windowStyle & wxTE_MULTILINE)
1223     {
1224 #ifdef __WXGTK20__
1225         return window == gtk_text_view_get_window( GTK_TEXT_VIEW( m_text ), GTK_TEXT_WINDOW_TEXT );  // pure guesswork
1226 #else
1227         return (window == GTK_TEXT(m_text)->text_area);
1228 #endif
1229     }
1230     else
1231     {
1232         return (window == GTK_ENTRY(m_text)->text_area);
1233     }
1234 }
1235
1236 // the font will change for subsequent text insertiongs
1237 bool wxTextCtrl::SetFont( const wxFont &font )
1238 {
1239     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1240
1241     if ( !wxTextCtrlBase::SetFont(font) )
1242     {
1243         // font didn't change, nothing to do
1244         return FALSE;
1245     }
1246
1247     if ( m_windowStyle & wxTE_MULTILINE )
1248     {
1249         m_updateFont = TRUE;
1250
1251         m_defaultStyle.SetFont(font);
1252
1253         ChangeFontGlobally();
1254     }
1255
1256     return TRUE;
1257 }
1258
1259 void wxTextCtrl::ChangeFontGlobally()
1260 {
1261     // this method is very inefficient and hence should be called as rarely as
1262     // possible!
1263     wxASSERT_MSG( (m_windowStyle & wxTE_MULTILINE) && m_updateFont,
1264                   _T("shouldn't be called for single line controls") );
1265
1266     wxString value = GetValue();
1267     if ( !value.IsEmpty() )
1268     {
1269         m_updateFont = FALSE;
1270
1271         Clear();
1272         AppendText(value);
1273     }
1274 }
1275
1276 void wxTextCtrl::UpdateFontIfNeeded()
1277 {
1278     if ( m_updateFont )
1279         ChangeFontGlobally();
1280 }
1281
1282 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1283 {
1284     if ( !wxControl::SetForegroundColour(colour) )
1285         return FALSE;
1286
1287     // update default fg colour too
1288     m_defaultStyle.SetTextColour(colour);
1289
1290     return TRUE;
1291 }
1292
1293 bool wxTextCtrl::SetBackgroundColour( const wxColour &colour )
1294 {
1295     wxCHECK_MSG( m_text != NULL, FALSE, wxT("invalid text ctrl") );
1296
1297     if ( !wxControl::SetBackgroundColour( colour ) )
1298         return FALSE;
1299
1300     if (!m_widget->window)
1301         return FALSE;
1302
1303     wxColour sysbg = wxSystemSettings::GetColour( wxSYS_COLOUR_BTNFACE );
1304     if (sysbg.Red() == colour.Red() &&
1305         sysbg.Green() == colour.Green() &&
1306         sysbg.Blue() == colour.Blue())
1307     {
1308         return FALSE; // FIXME or TRUE?
1309     }
1310
1311     if (!m_backgroundColour.Ok())
1312         return FALSE;
1313
1314     if (m_windowStyle & wxTE_MULTILINE)
1315     {
1316 #ifndef __WXGTK20__
1317         GdkWindow *window = GTK_TEXT(m_text)->text_area;
1318         if (!window)
1319             return FALSE;
1320         m_backgroundColour.CalcPixel( gdk_window_get_colormap( window ) );
1321         gdk_window_set_background( window, m_backgroundColour.GetColor() );
1322         gdk_window_clear( window );
1323 #endif
1324     }
1325
1326     // change active background color too
1327     m_defaultStyle.SetBackgroundColour( colour );
1328
1329     return TRUE;
1330 }
1331
1332 bool wxTextCtrl::SetStyle( long start, long end, const wxTextAttr& style )
1333 {
1334     /* VERY dirty way to do that - removes the required text and re-adds it
1335        with styling (FIXME) */
1336     if ( m_windowStyle & wxTE_MULTILINE )
1337     {
1338 #ifndef __WXGTK20__
1339         if ( style.IsDefault() )
1340         {
1341             // nothing to do
1342             return TRUE;
1343         }
1344
1345         gint l = gtk_text_get_length( GTK_TEXT(m_text) );
1346
1347         wxCHECK_MSG( start >= 0 && end <= l, FALSE,
1348                      _T("invalid range in wxTextCtrl::SetStyle") );
1349
1350         gint old_pos = gtk_editable_get_position( GTK_EDITABLE(m_text) );
1351         char *text = gtk_editable_get_chars( GTK_EDITABLE(m_text), start, end );
1352         wxString tmp(text,*wxConvCurrent);
1353         g_free( text );
1354
1355         gtk_editable_delete_text( GTK_EDITABLE(m_text), start, end );
1356         gtk_editable_set_position( GTK_EDITABLE(m_text), start );
1357
1358 #if wxUSE_UNICODE
1359         wxWX2MBbuf buf = tmp.mbc_str();
1360         const char *txt = buf;
1361         size_t txtlen = strlen(buf);
1362 #else
1363         const char *txt = tmp;
1364         size_t txtlen = tmp.length();
1365 #endif
1366
1367         // use the attributes from style which are set in it and fall back
1368         // first to the default style and then to the text control default
1369         // colours for the others
1370         wxGtkTextInsert(m_text,
1371                         wxTextAttr::Combine(style, m_defaultStyle, this),
1372                         txt,
1373                         txtlen);
1374
1375         /* does not seem to help under GTK+ 1.2 !!!
1376         gtk_editable_set_position( GTK_EDITABLE(m_text), old_pos ); */
1377         SetInsertionPoint( old_pos );
1378 #endif
1379         return TRUE;
1380     }
1381     else // singe line
1382     {
1383         // cannot do this for GTK+'s Entry widget
1384         return FALSE;
1385     }
1386 }
1387
1388 void wxTextCtrl::ApplyWidgetStyle()
1389 {
1390     if (m_windowStyle & wxTE_MULTILINE)
1391     {
1392         // how ?
1393     }
1394     else
1395     {
1396         SetWidgetStyle();
1397         gtk_widget_set_style( m_text, m_widgetStyle );
1398     }
1399 }
1400
1401 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1402 {
1403     Cut();
1404 }
1405
1406 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1407 {
1408     Copy();
1409 }
1410
1411 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1412 {
1413     Paste();
1414 }
1415
1416 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1417 {
1418     Undo();
1419 }
1420
1421 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1422 {
1423     Redo();
1424 }
1425
1426 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1427 {
1428     event.Enable( CanCut() );
1429 }
1430
1431 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1432 {
1433     event.Enable( CanCopy() );
1434 }
1435
1436 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1437 {
1438     event.Enable( CanPaste() );
1439 }
1440
1441 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1442 {
1443     event.Enable( CanUndo() );
1444 }
1445
1446 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1447 {
1448     event.Enable( CanRedo() );
1449 }
1450
1451 void wxTextCtrl::OnInternalIdle()
1452 {
1453     wxCursor cursor = m_cursor;
1454     if (g_globalCursor.Ok()) cursor = g_globalCursor;
1455
1456     if (cursor.Ok())
1457     {
1458 #ifndef __WXGTK20__
1459         GdkWindow *window = (GdkWindow*) NULL;
1460         if (HasFlag(wxTE_MULTILINE))
1461             window = GTK_TEXT(m_text)->text_area;
1462         else
1463             window = GTK_ENTRY(m_text)->text_area;
1464
1465         if (window)
1466             gdk_window_set_cursor( window, cursor.GetCursor() );
1467
1468         if (!g_globalCursor.Ok())
1469             cursor = *wxSTANDARD_CURSOR;
1470
1471         window = m_widget->window;
1472         if ((window) && !(GTK_WIDGET_NO_WINDOW(m_widget)))
1473             gdk_window_set_cursor( window, cursor.GetCursor() );
1474 #endif
1475     }
1476
1477     if (g_delayedFocus == this)
1478     {
1479         if (GTK_WIDGET_REALIZED(m_widget))
1480         {
1481             gtk_widget_grab_focus( m_widget );
1482             g_delayedFocus = NULL;
1483         }
1484     }
1485
1486     UpdateWindowUI();
1487 }
1488
1489 wxSize wxTextCtrl::DoGetBestSize() const
1490 {
1491     // FIXME should be different for multi-line controls...
1492     wxSize ret( wxControl::DoGetBestSize() );
1493     return wxSize(80, ret.y);
1494 }
1495
1496 // ----------------------------------------------------------------------------
1497 // freeze/thaw
1498 // ----------------------------------------------------------------------------
1499
1500 void wxTextCtrl::Freeze()
1501 {
1502 #ifndef __WXGTK20__
1503     if ( HasFlag(wxTE_MULTILINE) )
1504     {
1505         gtk_text_freeze(GTK_TEXT(m_text));
1506     }
1507 #endif
1508 }
1509
1510 void wxTextCtrl::Thaw()
1511 {
1512 #ifndef __WXGTK20__
1513     if ( HasFlag(wxTE_MULTILINE) )
1514     {
1515         GTK_TEXT(m_text)->vadj->value = 0.0;
1516
1517         gtk_text_thaw(GTK_TEXT(m_text));
1518     }
1519 #endif
1520 }
1521
1522 // ----------------------------------------------------------------------------
1523 // scrolling
1524 // ----------------------------------------------------------------------------
1525
1526 GtkAdjustment *wxTextCtrl::GetVAdj() const
1527 {
1528 #ifdef __WXGTK20__
1529     return NULL;
1530 #else
1531     return HasFlag(wxTE_MULTILINE) ? GTK_TEXT(m_text)->vadj : NULL;
1532 #endif
1533 }
1534
1535 bool wxTextCtrl::DoScroll(GtkAdjustment *adj, int diff)
1536 {
1537 #ifndef __WXGTK20__
1538     float value = adj->value + diff;
1539
1540     if ( value < 0 )
1541         value = 0;
1542
1543     float upper = adj->upper - adj->page_size;
1544     if ( value > upper )
1545         value = upper;
1546
1547     // did we noticeably change the scroll position?
1548     if ( fabs(adj->value - value) < 0.2 )
1549     {
1550         // well, this is what Robert does in wxScrollBar, so it must be good...
1551         return FALSE;
1552     }
1553
1554     adj->value = value;
1555
1556     gtk_signal_emit_by_name(GTK_OBJECT(adj), "value_changed");
1557
1558 #endif
1559     return TRUE;
1560 }
1561
1562 bool wxTextCtrl::ScrollLines(int lines)
1563 {
1564 #ifdef __WXGTK20__
1565     return FALSE;
1566 #else
1567     GtkAdjustment *adj = GetVAdj();
1568     if ( !adj )
1569         return FALSE;
1570
1571     // this is hardcoded to 10 in GTK+ 1.2 (great idea)
1572     static const int KEY_SCROLL_PIXELS = 10;
1573
1574     return DoScroll(adj, lines*KEY_SCROLL_PIXELS);
1575 #endif
1576 }
1577
1578 bool wxTextCtrl::ScrollPages(int pages)
1579 {
1580 #ifdef __WXGTK20__
1581     return FALSE;
1582 #else
1583     GtkAdjustment *adj = GetVAdj();
1584     if ( !adj )
1585         return FALSE;
1586
1587     return DoScroll(adj, (int)ceil(pages*adj->page_increment));
1588 #endif
1589 }
1590