src/osx/textctrl_osx.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/textctrl_osx.cpp
   3 // Purpose:     wxTextCtrl
   4 // Author:      Stefan Csomor
   5 // Modified by: Ryan Norton (MLTE GetLineLength and GetLineText)
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #if wxUSE_TEXTCTRL
  15
  16 #include "wx/textctrl.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/intl.h"
  20     #include "wx/app.h"
  21     #include "wx/utils.h"
  22     #include "wx/dc.h"
  23     #include "wx/button.h"
  24     #include "wx/menu.h"
  25     #include "wx/settings.h"
  26     #include "wx/msgdlg.h"
  27     #include "wx/toplevel.h"
  28 #endif
  29
  30 #ifdef __DARWIN__
  31     #include <sys/types.h>
  32     #include <sys/stat.h>
  33 #else
  34     #include <stat.h>
  35 #endif
  36
  37 #if wxUSE_STD_IOSTREAM
  38     #if wxUSE_IOSTREAMH
  39         #include <fstream.h>
  40     #else
  41         #include <fstream>
  42     #endif
  43 #endif
  44
  45 #include "wx/filefn.h"
  46 #include "wx/sysopt.h"
  47 #include "wx/thread.h"
  48
  49 #include "wx/osx/private.h"
  50
  51 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
  52     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
  53     EVT_CHAR(wxTextCtrl::OnChar)
  54     EVT_KEY_DOWN(wxTextCtrl::OnKeyDown)
  55     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
  56     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
  57     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
  58     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
  59     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
  60     EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
  61     EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
  62
  63     EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)
  64
  65     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
  66     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
  67     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
  68     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
  69     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
  70     EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
  71     EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
  72 END_EVENT_TABLE()
  73
  74
  75 void wxTextCtrl::Init()
  76 {
  77     m_dirty = false;
  78
  79     m_privateContextMenu = NULL;
  80 }
  81
  82 wxTextCtrl::~wxTextCtrl()
  83 {
  84 #if wxUSE_MENUS
  85     delete m_privateContextMenu;
  86 #endif
  87 }
  88
  89 bool wxTextCtrl::Create( wxWindow *parent,
  90     wxWindowID id,
  91     const wxString& str,
  92     const wxPoint& pos,
  93     const wxSize& size,
  94     long style,
  95     const wxValidator& validator,
  96     const wxString& name )
  97 {
  98     DontCreatePeer();
  99     m_editable = true ;
 100
 101     if ( ! (style & wxNO_BORDER) )
 102         style = (style & ~wxBORDER_MASK) | wxSUNKEN_BORDER ;
 103
 104     if ( !wxTextCtrlBase::Create( parent, id, pos, size, style & ~(wxHSCROLL | wxVSCROLL), validator, name ) )
 105         return false;
 106
 107     if ( m_windowStyle & wxTE_MULTILINE )
 108     {
 109         // always turn on this style for multi-line controls
 110         m_windowStyle |= wxTE_PROCESS_ENTER;
 111         style |= wxTE_PROCESS_ENTER ;
 112     }
 113
 114
 115     SetPeer(wxWidgetImpl::CreateTextControl( this, GetParent(), GetId(), str, pos, size, style, GetExtraStyle() ));
 116
 117     MacPostControlCreate(pos, size) ;
 118
 119 #if wxOSX_USE_COCOA
 120     // under carbon everything can already be set before the MacPostControlCreate embedding takes place
 121     // but under cocoa for single line textfields this only works after everything has been set up
 122     GetTextPeer()->SetStringValue(str);
 123 #endif
 124
 125     // only now the embedding is correct and we can do a positioning update
 126
 127     MacSuperChangedPosition() ;
 128
 129     if ( m_windowStyle & wxTE_READONLY)
 130         SetEditable( false ) ;
 131
 132     SetCursor( wxCursor( wxCURSOR_IBEAM ) ) ;
 133
 134     return true;
 135 }
 136
 137 void wxTextCtrl::MacSuperChangedPosition()
 138 {
 139     wxWindow::MacSuperChangedPosition() ;
 140 #if wxOSX_USE_CARBON
 141     GetPeer()->SuperChangedPosition() ;
 142 #endif
 143 }
 144
 145 void wxTextCtrl::MacVisibilityChanged()
 146 {
 147 #if wxOSX_USE_CARBON
 148     GetPeer()->VisibilityChanged( GetPeer()->IsVisible() );
 149 #endif
 150 }
 151
 152 void wxTextCtrl::MacCheckSpelling(bool check)
 153 {
 154     GetTextPeer()->CheckSpelling(check);
 155 }
 156
 157 bool wxTextCtrl::SetFont( const wxFont& font )
 158 {
 159     if ( !wxTextCtrlBase::SetFont( font ) )
 160         return false ;
 161
 162     GetPeer()->SetFont( font , GetForegroundColour() , GetWindowStyle(), false /* dont ignore black */ ) ;
 163
 164     return true ;
 165 }
 166
 167 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
 168 {
 169     if (GetTextPeer())
 170         GetTextPeer()->SetStyle( start , end , style ) ;
 171
 172     return true ;
 173 }
 174
 175 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
 176 {
 177     wxTextCtrlBase::SetDefaultStyle( style ) ;
 178     SetStyle( -1  /*current selection*/  , -1 /*current selection*/ , GetDefaultStyle() ) ;
 179
 180     return true ;
 181 }
 182
 183 bool wxTextCtrl::IsModified() const
 184 {
 185     return m_dirty;
 186 }
 187
 188 bool wxTextCtrl::AcceptsFocus() const
 189 {
 190     // we don't want focus if we can't be edited
 191     return /*IsEditable() && */ wxControl::AcceptsFocus();
 192 }
 193
 194 wxSize wxTextCtrl::DoGetBestSize() const
 195 {
 196     if (GetTextPeer())
 197     {
 198         wxSize size = GetTextPeer()->GetBestSize();
 199         if (size.x > 0 && size.y > 0)
 200             return size;
 201     }
 202
 203     int wText, hText;
 204
 205     // these are the numbers from the HIG:
 206     // we reduce them by the borders first
 207     wText = 100 ;
 208
 209     switch ( m_windowVariant )
 210     {
 211         case wxWINDOW_VARIANT_NORMAL :
 212             hText = 22 - 6 ;
 213             break ;
 214
 215         case wxWINDOW_VARIANT_SMALL :
 216             hText = 19 - 6 ;
 217             break ;
 218
 219         case wxWINDOW_VARIANT_MINI :
 220             hText = 15 - 6 ;
 221             break ;
 222
 223         default :
 224             hText = 22 - 6;
 225             break ;
 226     }
 227
 228     // as the above numbers have some free space around the text
 229     // we get 5 lines like this anyway
 230     if ( m_windowStyle & wxTE_MULTILINE )
 231          hText *= 5 ;
 232
 233     if ( !HasFlag(wxNO_BORDER) )
 234         hText += 6 ;
 235
 236     return wxSize(wText, hText);
 237 }
 238
 239 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
 240 {
 241     return GetTextPeer()->GetStyle(position, style);
 242 }
 243
 244 void wxTextCtrl::MarkDirty()
 245 {
 246     m_dirty = true;
 247 }
 248
 249 void wxTextCtrl::DiscardEdits()
 250 {
 251     m_dirty = false;
 252 }
 253
 254 int wxTextCtrl::GetNumberOfLines() const
 255 {
 256     return GetTextPeer()->GetNumberOfLines() ;
 257 }
 258
 259 long wxTextCtrl::XYToPosition(long x, long y) const
 260 {
 261     return GetTextPeer()->XYToPosition( x , y ) ;
 262 }
 263
 264 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
 265 {
 266     return GetTextPeer()->PositionToXY( pos , x , y ) ;
 267 }
 268
 269 void wxTextCtrl::ShowPosition(long pos)
 270 {
 271     return GetTextPeer()->ShowPosition(pos) ;
 272 }
 273
 274 int wxTextCtrl::GetLineLength(long lineNo) const
 275 {
 276     return GetTextPeer()->GetLineLength(lineNo) ;
 277 }
 278
 279 wxString wxTextCtrl::GetLineText(long lineNo) const
 280 {
 281     return GetTextPeer()->GetLineText(lineNo) ;
 282 }
 283
 284 void wxTextCtrl::Copy()
 285 {
 286     if (CanCopy())
 287     {
 288         wxClipboardTextEvent evt(wxEVT_TEXT_COPY, GetId());
 289         evt.SetEventObject(this);
 290         if (!GetEventHandler()->ProcessEvent(evt))
 291         {
 292             wxTextEntry::Copy();
 293         }
 294     }
 295 }
 296
 297 void wxTextCtrl::Cut()
 298 {
 299     if (CanCut())
 300     {
 301         wxClipboardTextEvent evt(wxEVT_TEXT_CUT, GetId());
 302         evt.SetEventObject(this);
 303         if (!GetEventHandler()->ProcessEvent(evt))
 304         {
 305             wxTextEntry::Cut();
 306
 307             SendTextUpdatedEvent();
 308         }
 309     }
 310 }
 311
 312 void wxTextCtrl::Paste()
 313 {
 314     if (CanPaste())
 315     {
 316         wxClipboardTextEvent evt(wxEVT_TEXT_PASTE, GetId());
 317         evt.SetEventObject(this);
 318         if (!GetEventHandler()->ProcessEvent(evt))
 319         {
 320             wxTextEntry::Paste();
 321
 322             // TODO: eventually we should add setting the default style again
 323             SendTextUpdatedEvent();
 324         }
 325     }
 326 }
 327
 328 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
 329 {
 330     // By default, load the first file into the text window.
 331     if (event.GetNumberOfFiles() > 0)
 332         LoadFile( event.GetFiles()[0] );
 333 }
 334
 335 void wxTextCtrl::OnKeyDown(wxKeyEvent& event)
 336 {
 337     if ( event.GetModifiers() == wxMOD_CONTROL )
 338     {
 339         switch( event.GetKeyCode() )
 340         {
 341             case 'A':
 342                 SelectAll();
 343                 return;
 344             case 'C':
 345                 if ( CanCopy() )
 346                     Copy() ;
 347                 return;
 348             case 'V':
 349                 if ( CanPaste() )
 350                     Paste() ;
 351                 return;
 352             case 'X':
 353                 if ( CanCut() )
 354                     Cut() ;
 355                 return;
 356             default:
 357                 break;
 358         }
 359     }
 360     // no, we didn't process it
 361     event.Skip();
 362 }
 363
 364 void wxTextCtrl::OnChar(wxKeyEvent& event)
 365 {
 366     int key = event.GetKeyCode() ;
 367     bool eat_key = false ;
 368     long from, to;
 369
 370     if ( !IsEditable() && !event.IsKeyInCategory(WXK_CATEGORY_ARROW | WXK_CATEGORY_TAB) &&
 371         !( key == WXK_RETURN && ( (m_windowStyle & wxTE_PROCESS_ENTER) || (m_windowStyle & wxTE_MULTILINE) ) )
 372 //        && key != WXK_PAGEUP && key != WXK_PAGEDOWN && key != WXK_HOME && key != WXK_END
 373         )
 374     {
 375         // eat it
 376         return ;
 377     }
 378
 379     if ( !GetTextPeer()->CanClipMaxLength() )
 380     {
 381         // Check if we have reached the max # of chars (if it is set), but still
 382         // allow navigation and deletion
 383         GetSelection( &from, &to );
 384         if ( !IsMultiLine() && m_maxLength && GetValue().length() >= m_maxLength &&
 385             !event.IsKeyInCategory(WXK_CATEGORY_ARROW | WXK_CATEGORY_TAB | WXK_CATEGORY_CUT) &&
 386             !( key == WXK_RETURN && (m_windowStyle & wxTE_PROCESS_ENTER) ) &&
 387             from == to )
 388         {
 389             // eat it, we don't want to add more than allowed # of characters
 390
 391             // TODO: generate EVT_TEXT_MAXLEN()
 392             return;
 393         }
 394     }
 395
 396     // assume that any key not processed yet is going to modify the control
 397     m_dirty = true;
 398
 399     switch ( key )
 400     {
 401         case WXK_RETURN:
 402             if (m_windowStyle & wxTE_PROCESS_ENTER)
 403             {
 404                 wxCommandEvent event(wxEVT_TEXT_ENTER, m_windowId);
 405                 event.SetEventObject( this );
 406                 event.SetString( GetValue() );
 407                 if ( HandleWindowEvent(event) )
 408                     return;
 409             }
 410
 411             if ( !(m_windowStyle & wxTE_MULTILINE) )
 412             {
 413                 wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
 414                 if ( tlw && tlw->GetDefaultItem() )
 415                 {
 416                     wxButton *def = wxDynamicCast(tlw->GetDefaultItem(), wxButton);
 417                     if ( def && def->IsEnabled() )
 418                     {
 419                         wxCommandEvent event(wxEVT_BUTTON, def->GetId() );
 420                         event.SetEventObject(def);
 421                         def->Command(event);
 422
 423                         return ;
 424                     }
 425                 }
 426
 427                 // this will make wxWidgets eat the ENTER key so that
 428                 // we actually prevent line wrapping in a single line text control
 429                 eat_key = true;
 430             }
 431             break;
 432
 433         case WXK_TAB:
 434             if ( !(m_windowStyle & wxTE_PROCESS_TAB))
 435             {
 436                 int flags = 0;
 437                 if (!event.ShiftDown())
 438                     flags |= wxNavigationKeyEvent::IsForward ;
 439                 if (event.ControlDown())
 440                     flags |= wxNavigationKeyEvent::WinChange ;
 441                 Navigate(flags);
 442
 443                 return;
 444             }
 445             else
 446             {
 447                 // This is necessary (don't know why);
 448                 // otherwise the tab will not be inserted.
 449                 WriteText(wxT("\t"));
 450                 eat_key = true;
 451             }
 452             break;
 453
 454         default:
 455             break;
 456     }
 457
 458     if (!eat_key)
 459     {
 460         // perform keystroke handling
 461         event.Skip(true) ;
 462     }
 463
 464     // osx_cocoa sends its event upon insertText
 465 #if wxOSX_USE_CARBON
 466     if ( ( key >= 0x20 && key < WXK_START ) ||
 467          ( key >= WXK_NUMPAD0 && key <= WXK_DIVIDE ) ||
 468          key == WXK_RETURN ||
 469          key == WXK_DELETE ||
 470          key == WXK_BACK)
 471     {
 472         wxCommandEvent event1(wxEVT_TEXT, m_windowId);
 473         event1.SetEventObject( this );
 474         wxPostEvent( GetEventHandler(), event1 );
 475     }
 476 #endif
 477 }
 478
 479 void wxTextCtrl::Command(wxCommandEvent & event)
 480 {
 481     SetValue(event.GetString());
 482     ProcessCommand(event);
 483 }
 484
 485 // ----------------------------------------------------------------------------
 486 // standard handlers for standard edit menu events
 487 // ----------------------------------------------------------------------------
 488
 489 // CS: Context Menus only work with MLTE implementations or non-multiline HIViews at the moment
 490
 491 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
 492 {
 493     Cut();
 494 }
 495
 496 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
 497 {
 498     Copy();
 499 }
 500
 501 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
 502 {
 503     Paste();
 504 }
 505
 506 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
 507 {
 508     Undo();
 509 }
 510
 511 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
 512 {
 513     Redo();
 514 }
 515
 516 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
 517 {
 518     long from, to;
 519
 520     GetSelection( &from, &to );
 521     if (from != -1 && to != -1)
 522         Remove( from, to );
 523 }
 524
 525 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
 526 {
 527     SetSelection(-1, -1);
 528 }
 529
 530 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
 531 {
 532     event.Enable( CanCut() );
 533 }
 534
 535 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
 536 {
 537     event.Enable( CanCopy() );
 538 }
 539
 540 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
 541 {
 542     event.Enable( CanPaste() );
 543 }
 544
 545 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
 546 {
 547     event.Enable( CanUndo() );
 548 }
 549
 550 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
 551 {
 552     event.Enable( CanRedo() );
 553 }
 554
 555 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
 556 {
 557     long from, to;
 558
 559     GetSelection( &from, &to );
 560     event.Enable( from != -1 && to != -1 && from != to && IsEditable() ) ;
 561 }
 562
 563 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
 564 {
 565     event.Enable(GetLastPosition() > 0);
 566 }
 567
 568 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
 569 {
 570     if ( GetTextPeer()->HasOwnContextMenu() )
 571     {
 572         event.Skip() ;
 573         return ;
 574     }
 575
 576 #if wxUSE_MENUS
 577     if (m_privateContextMenu == NULL)
 578     {
 579         m_privateContextMenu = new wxMenu;
 580         m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
 581         m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
 582         m_privateContextMenu->AppendSeparator();
 583         m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
 584         m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
 585         m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
 586         m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
 587         m_privateContextMenu->AppendSeparator();
 588         m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
 589     }
 590
 591     PopupMenu(m_privateContextMenu);
 592 #endif
 593 }
 594
 595 bool wxTextCtrl::MacSetupCursor( const wxPoint& pt )
 596 {
 597     if ( !GetTextPeer()->SetupCursor( pt ) )
 598         return wxWindow::MacSetupCursor( pt ) ;
 599     else
 600         return true ;
 601 }
 602
 603 bool wxTextCtrl::SetHint(const wxString& hint)
 604 {
 605     m_hintString = hint;
 606
 607     if ( GetTextPeer() && GetTextPeer()->SetHint(hint) )
 608         return true;
 609
 610     return false;
 611 }
 612
 613 wxString wxTextCtrl::GetHint() const
 614 {
 615     return m_hintString;
 616 }
 617
 618 // ----------------------------------------------------------------------------
 619 // implementation base class
 620 // ----------------------------------------------------------------------------
 621
 622 bool wxTextWidgetImpl::GetStyle(long WXUNUSED(position),
 623                                 wxTextAttr& WXUNUSED(style))
 624 {
 625     return false;
 626 }
 627
 628 void wxTextWidgetImpl::SetStyle(long WXUNUSED(start),
 629                                 long WXUNUSED(end),
 630                                 const wxTextAttr& WXUNUSED(style))
 631 {
 632 }
 633
 634 void wxTextWidgetImpl::Copy()
 635 {
 636 }
 637
 638 void wxTextWidgetImpl::Cut()
 639 {
 640 }
 641
 642 void wxTextWidgetImpl::Paste()
 643 {
 644 }
 645
 646 bool wxTextWidgetImpl::CanPaste() const
 647 {
 648     return false ;
 649 }
 650
 651 void wxTextWidgetImpl::SetEditable(bool WXUNUSED(editable))
 652 {
 653 }
 654
 655 long wxTextWidgetImpl::GetLastPosition() const
 656 {
 657     return GetStringValue().length() ;
 658 }
 659
 660 void wxTextWidgetImpl::Replace( long from , long to , const wxString &val )
 661 {
 662     SetSelection( from , to ) ;
 663     WriteText( val ) ;
 664 }
 665
 666 void wxTextWidgetImpl::Remove( long from , long to )
 667 {
 668     SetSelection( from , to ) ;
 669     WriteText( wxEmptyString) ;
 670 }
 671
 672 void wxTextWidgetImpl::Clear()
 673 {
 674     SetStringValue( wxEmptyString ) ;
 675 }
 676
 677 bool wxTextWidgetImpl::CanUndo() const
 678 {
 679     return false ;
 680 }
 681
 682 void wxTextWidgetImpl::Undo()
 683 {
 684 }
 685
 686 bool wxTextWidgetImpl::CanRedo()  const
 687 {
 688     return false ;
 689 }
 690
 691 void wxTextWidgetImpl::Redo()
 692 {
 693 }
 694
 695 long wxTextWidgetImpl::XYToPosition(long WXUNUSED(x), long WXUNUSED(y)) const
 696 {
 697     return 0 ;
 698 }
 699
 700 bool wxTextWidgetImpl::PositionToXY(long WXUNUSED(pos),
 701                                     long *WXUNUSED(x),
 702                                     long *WXUNUSED(y)) const
 703 {
 704     return false ;
 705 }
 706
 707 void wxTextWidgetImpl::ShowPosition( long WXUNUSED(pos) )
 708 {
 709 }
 710
 711 int wxTextWidgetImpl::GetNumberOfLines() const
 712 {
 713     wxString content = GetStringValue() ;
 714     ItemCount lines = 1;
 715
 716     for (size_t i = 0; i < content.length() ; i++)
 717     {
 718 #if wxOSX_USE_COCOA
 719         if (content[i] == '\n')
 720 #else
 721         if (content[i] == '\r')
 722 #endif
 723             lines++;
 724     }
 725
 726     return lines ;
 727 }
 728
 729 wxString wxTextWidgetImpl::GetLineText(long lineNo) const
 730 {
 731     // TODO: change this if possible to reflect real lines
 732     wxString content = GetStringValue() ;
 733
 734     // Find line first
 735     int count = 0;
 736     for (size_t i = 0; i < content.length() ; i++)
 737     {
 738         if (count == lineNo)
 739         {
 740             // Add chars in line then
 741             wxString tmp;
 742
 743             for (size_t j = i; j < content.length(); j++)
 744             {
 745                 if (content[j] == '\n')
 746                     return tmp;
 747
 748                 tmp += content[j];
 749             }
 750
 751             return tmp;
 752         }
 753
 754         if (content[i] == '\n')
 755             count++;
 756     }
 757
 758     return wxEmptyString ;
 759 }
 760
 761 int wxTextWidgetImpl::GetLineLength(long lineNo) const
 762 {
 763     // TODO: change this if possible to reflect real lines
 764     wxString content = GetStringValue() ;
 765
 766     // Find line first
 767     int count = 0;
 768     for (size_t i = 0; i < content.length() ; i++)
 769     {
 770         if (count == lineNo)
 771         {
 772             // Count chars in line then
 773             count = 0;
 774             for (size_t j = i; j < content.length(); j++)
 775             {
 776                 if (content[j] == '\n')
 777                     return count;
 778
 779                 count++;
 780             }
 781
 782             return count;
 783         }
 784
 785         if (content[i] == '\n')
 786             count++;
 787     }
 788
 789     return 0 ;
 790 }
 791
 792 #endif // wxUSE_TEXTCTRL