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: textctrl.cpp 54820 2008-07-29 20:04:11Z SC $
   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 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxTextCtrlBase)
  52
  53 BEGIN_EVENT_TABLE(wxTextCtrl, wxTextCtrlBase)
  54     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
  55     EVT_CHAR(wxTextCtrl::OnChar)
  56     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
  57     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
  58     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
  59     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
  60     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
  61     EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
  62     EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
  63
  64     EVT_CONTEXT_MENU(wxTextCtrl::OnContextMenu)
  65
  66     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
  67     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
  68     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
  69     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
  70     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
  71     EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
  72     EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
  73 END_EVENT_TABLE()
  74
  75
  76 void wxTextCtrl::Init()
  77 {
  78     m_editable = true ;
  79     m_dirty = false;
  80
  81     m_maxLength = 0;
  82     m_privateContextMenu = NULL;
  83     m_triggerUpdateEvents = true ;
  84 }
  85
  86 wxTextCtrl::~wxTextCtrl()
  87 {
  88 #if wxUSE_MENUS
  89     delete m_privateContextMenu;
  90 #endif
  91 }
  92
  93 bool wxTextCtrl::Create( wxWindow *parent,
  94     wxWindowID id,
  95     const wxString& str,
  96     const wxPoint& pos,
  97     const wxSize& size,
  98     long style,
  99     const wxValidator& validator,
 100     const wxString& name )
 101 {
 102     m_macIsUserPane = false ;
 103     m_editable = true ;
 104
 105     if ( ! (style & wxNO_BORDER) )
 106         style = (style & ~wxBORDER_MASK) | wxSUNKEN_BORDER ;
 107
 108     if ( !wxTextCtrlBase::Create( parent, id, pos, size, style & ~(wxHSCROLL | wxVSCROLL), validator, name ) )
 109         return false;
 110
 111     if ( m_windowStyle & wxTE_MULTILINE )
 112     {
 113         // always turn on this style for multi-line controls
 114         m_windowStyle |= wxTE_PROCESS_ENTER;
 115         style |= wxTE_PROCESS_ENTER ;
 116     }
 117
 118
 119     m_peer = wxWidgetImpl::CreateTextControl( this, GetParent(), GetId(), str, pos, size, style, GetExtraStyle() );
 120
 121     MacPostControlCreate(pos, size) ;
 122
 123 #if wxOSX_USE_COCOA
 124     // under carbon everything can already be set before the MacPostControlCreate embedding takes place
 125     // but under cocoa for single line textfields this only works after everything has been set up
 126     GetTextPeer()->SetStringValue(str);
 127 #endif
 128
 129     // only now the embedding is correct and we can do a positioning update
 130
 131     MacSuperChangedPosition() ;
 132
 133     if ( m_windowStyle & wxTE_READONLY)
 134         SetEditable( false ) ;
 135
 136     SetCursor( wxCursor( wxCURSOR_IBEAM ) ) ;
 137
 138     return true;
 139 }
 140
 141 wxTextWidgetImpl* wxTextCtrl::GetTextPeer() const
 142 {
 143     return dynamic_cast<wxTextWidgetImpl*> (m_peer);
 144 }
 145
 146 void wxTextCtrl::MacSuperChangedPosition()
 147 {
 148     wxWindow::MacSuperChangedPosition() ;
 149 #if wxOSX_USE_CARBON
 150     GetPeer()->SuperChangedPosition() ;
 151 #endif
 152 }
 153
 154 void wxTextCtrl::MacVisibilityChanged()
 155 {
 156 #if wxOSX_USE_CARBON
 157     GetPeer()->VisibilityChanged( GetPeer()->IsVisible() );
 158 #endif
 159 }
 160
 161 void wxTextCtrl::MacCheckSpelling(bool check)
 162 {
 163     GetTextPeer()->CheckSpelling(check);
 164 }
 165
 166 wxString wxTextCtrl::DoGetValue() const
 167 {
 168     return GetTextPeer()->GetStringValue() ;
 169 }
 170
 171 void wxTextCtrl::GetSelection(long* from, long* to) const
 172 {
 173     GetTextPeer()->GetSelection( from , to ) ;
 174 }
 175
 176 void wxTextCtrl::SetMaxLength(unsigned long len)
 177 {
 178     m_maxLength = len ;
 179 }
 180
 181 bool wxTextCtrl::SetFont( const wxFont& font )
 182 {
 183     if ( !wxTextCtrlBase::SetFont( font ) )
 184         return false ;
 185
 186     GetPeer()->SetFont( font , GetForegroundColour() , GetWindowStyle(), false /* dont ignore black */ ) ;
 187
 188     return true ;
 189 }
 190
 191 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
 192 {
 193     GetTextPeer()->SetStyle( start , end , style ) ;
 194
 195     return true ;
 196 }
 197
 198 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
 199 {
 200     wxTextCtrlBase::SetDefaultStyle( style ) ;
 201     SetStyle( -1  /*current selection*/  , -1 /*current selection*/ , GetDefaultStyle() ) ;
 202
 203     return true ;
 204 }
 205
 206 // Clipboard operations
 207
 208 void wxTextCtrl::Copy()
 209 {
 210     if (CanCopy())
 211         GetTextPeer()->Copy() ;
 212 }
 213
 214 void wxTextCtrl::Cut()
 215 {
 216     if (CanCut())
 217     {
 218         GetTextPeer()->Cut() ;
 219
 220         SendTextUpdatedEvent();
 221     }
 222 }
 223
 224 void wxTextCtrl::Paste()
 225 {
 226     if (CanPaste())
 227     {
 228         GetTextPeer()->Paste() ;
 229
 230         // TODO: eventually we should add setting the default style again
 231         SendTextUpdatedEvent();
 232     }
 233 }
 234
 235 bool wxTextCtrl::CanCopy() const
 236 {
 237     // Can copy if there's a selection
 238     long from, to;
 239     GetSelection( &from, &to );
 240
 241     return (from != to);
 242 }
 243
 244 bool wxTextCtrl::CanCut() const
 245 {
 246     if ( !IsEditable() )
 247         return false;
 248
 249     // Can cut if there's a selection
 250     long from, to;
 251     GetSelection( &from, &to );
 252
 253     return (from != to);
 254 }
 255
 256 bool wxTextCtrl::CanPaste() const
 257 {
 258     if (!IsEditable())
 259         return false;
 260
 261     return GetTextPeer()->CanPaste() ;
 262 }
 263
 264 void wxTextCtrl::SetEditable(bool editable)
 265 {
 266     if ( editable != m_editable )
 267     {
 268         m_editable = editable ;
 269         GetTextPeer()->SetEditable( editable ) ;
 270     }
 271 }
 272
 273 void wxTextCtrl::SetInsertionPoint(long pos)
 274 {
 275     SetSelection( pos , pos ) ;
 276 }
 277
 278 void wxTextCtrl::SetInsertionPointEnd()
 279 {
 280     long pos = GetLastPosition();
 281     SetInsertionPoint( pos );
 282 }
 283
 284 long wxTextCtrl::GetInsertionPoint() const
 285 {
 286     long begin, end ;
 287     GetSelection( &begin , &end ) ;
 288
 289     return begin ;
 290 }
 291
 292 wxTextPos wxTextCtrl::GetLastPosition() const
 293 {
 294     return GetTextPeer()->GetLastPosition() ;
 295 }
 296
 297 void wxTextCtrl::Remove(long from, long to)
 298 {
 299     GetTextPeer()->Remove( from , to ) ;
 300     if ( m_triggerUpdateEvents )
 301         SendTextUpdatedEvent();
 302 }
 303
 304 void wxTextCtrl::SetSelection(long from, long to)
 305 {
 306     GetTextPeer()->SetSelection( from , to ) ;
 307 }
 308
 309 void wxTextCtrl::WriteText(const wxString& str)
 310 {
 311     GetTextPeer()->WriteText( str ) ;
 312     if ( m_triggerUpdateEvents )
 313         SendTextUpdatedEvent();
 314 }
 315
 316 void wxTextCtrl::Clear()
 317 {
 318     GetTextPeer()->Clear() ;
 319     SendTextUpdatedEvent();
 320 }
 321
 322 bool wxTextCtrl::IsModified() const
 323 {
 324     return m_dirty;
 325 }
 326
 327 bool wxTextCtrl::IsEditable() const
 328 {
 329     return IsEnabled() && m_editable ;
 330 }
 331
 332 bool wxTextCtrl::AcceptsFocus() const
 333 {
 334     // we don't want focus if we can't be edited
 335     return /*IsEditable() && */ wxControl::AcceptsFocus();
 336 }
 337
 338 wxSize wxTextCtrl::DoGetBestSize() const
 339 {
 340     int wText, hText;
 341
 342     // these are the numbers from the HIG:
 343     // we reduce them by the borders first
 344     wText = 100 ;
 345
 346     switch ( m_windowVariant )
 347     {
 348         case wxWINDOW_VARIANT_NORMAL :
 349             hText = 22 - 6 ;
 350             break ;
 351
 352         case wxWINDOW_VARIANT_SMALL :
 353             hText = 19 - 6 ;
 354             break ;
 355
 356         case wxWINDOW_VARIANT_MINI :
 357             hText = 15 - 6 ;
 358             break ;
 359
 360         default :
 361             hText = 22 - 6;
 362             break ;
 363     }
 364
 365     // as the above numbers have some free space around the text
 366     // we get 5 lines like this anyway
 367     if ( m_windowStyle & wxTE_MULTILINE )
 368          hText *= 5 ;
 369
 370     if ( !HasFlag(wxNO_BORDER) )
 371         hText += 6 ;
 372
 373     return wxSize(wText, hText);
 374 }
 375
 376 // ----------------------------------------------------------------------------
 377 // Undo/redo
 378 // ----------------------------------------------------------------------------
 379
 380 void wxTextCtrl::Undo()
 381 {
 382     if (CanUndo())
 383         GetTextPeer()->Undo() ;
 384 }
 385
 386 void wxTextCtrl::Redo()
 387 {
 388     if (CanRedo())
 389         GetTextPeer()->Redo() ;
 390 }
 391
 392 bool wxTextCtrl::CanUndo() const
 393 {
 394     if ( !IsEditable() )
 395         return false ;
 396
 397     return GetTextPeer()->CanUndo() ;
 398 }
 399
 400 bool wxTextCtrl::CanRedo() const
 401 {
 402     if ( !IsEditable() )
 403         return false ;
 404
 405     return GetTextPeer()->CanRedo() ;
 406 }
 407
 408 void wxTextCtrl::MarkDirty()
 409 {
 410     m_dirty = true;
 411 }
 412
 413 void wxTextCtrl::DiscardEdits()
 414 {
 415     m_dirty = false;
 416 }
 417
 418 int wxTextCtrl::GetNumberOfLines() const
 419 {
 420     return GetTextPeer()->GetNumberOfLines() ;
 421 }
 422
 423 long wxTextCtrl::XYToPosition(long x, long y) const
 424 {
 425     return GetTextPeer()->XYToPosition( x , y ) ;
 426 }
 427
 428 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
 429 {
 430     return GetTextPeer()->PositionToXY( pos , x , y ) ;
 431 }
 432
 433 void wxTextCtrl::ShowPosition(long pos)
 434 {
 435     return GetTextPeer()->ShowPosition(pos) ;
 436 }
 437
 438 int wxTextCtrl::GetLineLength(long lineNo) const
 439 {
 440     return GetTextPeer()->GetLineLength(lineNo) ;
 441 }
 442
 443 wxString wxTextCtrl::GetLineText(long lineNo) const
 444 {
 445     return GetTextPeer()->GetLineText(lineNo) ;
 446 }
 447
 448 void wxTextCtrl::Command(wxCommandEvent & event)
 449 {
 450     SetValue(event.GetString());
 451     ProcessCommand(event);
 452 }
 453
 454 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
 455 {
 456     // By default, load the first file into the text window.
 457     if (event.GetNumberOfFiles() > 0)
 458         LoadFile( event.GetFiles()[0] );
 459 }
 460
 461 void wxTextCtrl::OnChar(wxKeyEvent& event)
 462 {
 463     int key = event.GetKeyCode() ;
 464     bool eat_key = false ;
 465     long from, to;
 466
 467     if ( key == 'a' && event.MetaDown() )
 468     {
 469         SelectAll() ;
 470
 471         return ;
 472     }
 473
 474     if ( key == 'c' && event.MetaDown() )
 475     {
 476         if ( CanCopy() )
 477             Copy() ;
 478
 479         return ;
 480     }
 481
 482     if ( !IsEditable() && !event.IsKeyInCategory(WXK_CATEGORY_ARROW | WXK_CATEGORY_TAB) &&
 483         !( key == WXK_RETURN && ( (m_windowStyle & wxTE_PROCESS_ENTER) || (m_windowStyle & wxTE_MULTILINE) ) )
 484 //        && key != WXK_PAGEUP && key != WXK_PAGEDOWN && key != WXK_HOME && key != WXK_END
 485         )
 486     {
 487         // eat it
 488         return ;
 489     }
 490
 491     // Check if we have reached the max # of chars (if it is set), but still
 492     // allow navigation and deletion
 493     GetSelection( &from, &to );
 494     if ( !IsMultiLine() && m_maxLength && GetValue().length() >= m_maxLength &&
 495         !event.IsKeyInCategory(WXK_CATEGORY_ARROW | WXK_CATEGORY_TAB | WXK_CATEGORY_CUT) &&
 496         !( key == WXK_RETURN && (m_windowStyle & wxTE_PROCESS_ENTER) ) &&
 497         from == to )
 498     {
 499         // eat it, we don't want to add more than allowed # of characters
 500
 501         // TODO: generate EVT_TEXT_MAXLEN()
 502         return;
 503     }
 504
 505     // assume that any key not processed yet is going to modify the control
 506     m_dirty = true;
 507
 508     if ( key == 'v' && event.MetaDown() )
 509     {
 510         if ( CanPaste() )
 511             Paste() ;
 512
 513         return ;
 514     }
 515
 516     if ( key == 'x' && event.MetaDown() )
 517     {
 518         if ( CanCut() )
 519             Cut() ;
 520
 521         return ;
 522     }
 523
 524     switch ( key )
 525     {
 526         case WXK_RETURN:
 527             if (m_windowStyle & wxTE_PROCESS_ENTER)
 528             {
 529                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 530                 event.SetEventObject( this );
 531                 event.SetString( GetValue() );
 532                 if ( HandleWindowEvent(event) )
 533                     return;
 534             }
 535
 536             if ( !(m_windowStyle & wxTE_MULTILINE) )
 537             {
 538                 wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
 539                 if ( tlw && tlw->GetDefaultItem() )
 540                 {
 541                     wxButton *def = wxDynamicCast(tlw->GetDefaultItem(), wxButton);
 542                     if ( def && def->IsEnabled() )
 543                     {
 544                         wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, def->GetId() );
 545                         event.SetEventObject(def);
 546                         def->Command(event);
 547
 548                         return ;
 549                     }
 550                 }
 551
 552                 // this will make wxWidgets eat the ENTER key so that
 553                 // we actually prevent line wrapping in a single line text control
 554                 eat_key = true;
 555             }
 556             break;
 557
 558         case WXK_TAB:
 559             if ( !(m_windowStyle & wxTE_PROCESS_TAB))
 560             {
 561                 int flags = 0;
 562                 if (!event.ShiftDown())
 563                     flags |= wxNavigationKeyEvent::IsForward ;
 564                 if (event.ControlDown())
 565                     flags |= wxNavigationKeyEvent::WinChange ;
 566                 Navigate(flags);
 567
 568                 return;
 569             }
 570             else
 571             {
 572                 // This is necessary (don't know why);
 573                 // otherwise the tab will not be inserted.
 574                 WriteText(wxT("\t"));
 575                 eat_key = true;
 576             }
 577             break;
 578
 579         default:
 580             break;
 581     }
 582
 583     if (!eat_key)
 584     {
 585         // perform keystroke handling
 586         event.Skip(true) ;
 587     }
 588
 589     // osx_cocoa sends its event upon insertText
 590 #if wxOSX_USE_CARBON
 591     if ( ( key >= 0x20 && key < WXK_START ) ||
 592          ( key >= WXK_NUMPAD0 && key <= WXK_DIVIDE ) ||
 593          key == WXK_RETURN ||
 594          key == WXK_DELETE ||
 595          key == WXK_BACK)
 596     {
 597         wxCommandEvent event1(wxEVT_COMMAND_TEXT_UPDATED, m_windowId);
 598         event1.SetEventObject( this );
 599         wxPostEvent( GetEventHandler(), event1 );
 600     }
 601 #endif
 602 }
 603
 604 // ----------------------------------------------------------------------------
 605 // standard handlers for standard edit menu events
 606 // ----------------------------------------------------------------------------
 607
 608 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
 609 {
 610     Cut();
 611 }
 612
 613 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
 614 {
 615     Copy();
 616 }
 617
 618 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
 619 {
 620     Paste();
 621 }
 622
 623 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
 624 {
 625     Undo();
 626 }
 627
 628 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
 629 {
 630     Redo();
 631 }
 632
 633 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
 634 {
 635     long from, to;
 636
 637     GetSelection( &from, &to );
 638     if (from != -1 && to != -1)
 639         Remove( from, to );
 640 }
 641
 642 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
 643 {
 644     SetSelection(-1, -1);
 645 }
 646
 647 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
 648 {
 649     event.Enable( CanCut() );
 650 }
 651
 652 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
 653 {
 654     event.Enable( CanCopy() );
 655 }
 656
 657 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
 658 {
 659     event.Enable( CanPaste() );
 660 }
 661
 662 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
 663 {
 664     event.Enable( CanUndo() );
 665 }
 666
 667 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
 668 {
 669     event.Enable( CanRedo() );
 670 }
 671
 672 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
 673 {
 674     long from, to;
 675
 676     GetSelection( &from, &to );
 677     event.Enable( from != -1 && to != -1 && from != to && IsEditable() ) ;
 678 }
 679
 680 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
 681 {
 682     event.Enable(GetLastPosition() > 0);
 683 }
 684
 685 // CS: Context Menus only work with MLTE implementations or non-multiline HIViews at the moment
 686
 687 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
 688 {
 689     if ( GetTextPeer()->HasOwnContextMenu() )
 690     {
 691         event.Skip() ;
 692         return ;
 693     }
 694
 695 #if wxUSE_MENUS
 696     if (m_privateContextMenu == NULL)
 697     {
 698         m_privateContextMenu = new wxMenu;
 699         m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
 700         m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
 701         m_privateContextMenu->AppendSeparator();
 702         m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
 703         m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
 704         m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
 705         m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
 706         m_privateContextMenu->AppendSeparator();
 707         m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
 708     }
 709
 710     if (m_privateContextMenu != NULL)
 711         PopupMenu(m_privateContextMenu);
 712 #endif
 713 }
 714
 715 bool wxTextCtrl::MacSetupCursor( const wxPoint& pt )
 716 {
 717     if ( !GetTextPeer()->SetupCursor( pt ) )
 718         return wxWindow::MacSetupCursor( pt ) ;
 719     else
 720         return true ;
 721 }
 722
 723 // ----------------------------------------------------------------------------
 724 // implementation base class
 725 // ----------------------------------------------------------------------------
 726
 727 void wxTextWidgetImpl::SetStyle(long WXUNUSED(start),
 728                                 long WXUNUSED(end),
 729                                 const wxTextAttr& WXUNUSED(style))
 730 {
 731 }
 732
 733 void wxTextWidgetImpl::Copy()
 734 {
 735 }
 736
 737 void wxTextWidgetImpl::Cut()
 738 {
 739 }
 740
 741 void wxTextWidgetImpl::Paste()
 742 {
 743 }
 744
 745 bool wxTextWidgetImpl::CanPaste() const
 746 {
 747     return false ;
 748 }
 749
 750 void wxTextWidgetImpl::SetEditable(bool WXUNUSED(editable))
 751 {
 752 }
 753
 754 long wxTextWidgetImpl::GetLastPosition() const
 755 {
 756     return GetStringValue().length() ;
 757 }
 758
 759 void wxTextWidgetImpl::Replace( long from , long to , const wxString &val )
 760 {
 761     SetSelection( from , to ) ;
 762     WriteText( val ) ;
 763 }
 764
 765 void wxTextWidgetImpl::Remove( long from , long to )
 766 {
 767     SetSelection( from , to ) ;
 768     WriteText( wxEmptyString) ;
 769 }
 770
 771 void wxTextWidgetImpl::Clear()
 772 {
 773     SetStringValue( wxEmptyString ) ;
 774 }
 775
 776 bool wxTextWidgetImpl::CanUndo() const
 777 {
 778     return false ;
 779 }
 780
 781 void wxTextWidgetImpl::Undo()
 782 {
 783 }
 784
 785 bool wxTextWidgetImpl::CanRedo()  const
 786 {
 787     return false ;
 788 }
 789
 790 void wxTextWidgetImpl::Redo()
 791 {
 792 }
 793
 794 long wxTextWidgetImpl::XYToPosition(long WXUNUSED(x), long WXUNUSED(y)) const
 795 {
 796     return 0 ;
 797 }
 798
 799 bool wxTextWidgetImpl::PositionToXY(long WXUNUSED(pos),
 800                                     long *WXUNUSED(x),
 801                                     long *WXUNUSED(y)) const
 802 {
 803     return false ;
 804 }
 805
 806 void wxTextWidgetImpl::ShowPosition( long WXUNUSED(pos) )
 807 {
 808 }
 809
 810 int wxTextWidgetImpl::GetNumberOfLines() const
 811 {
 812     ItemCount lines = 0 ;
 813     wxString content = GetStringValue() ;
 814     lines = 1;
 815
 816     for (size_t i = 0; i < content.length() ; i++)
 817     {
 818         if (content[i] == '\r')
 819             lines++;
 820     }
 821
 822     return lines ;
 823 }
 824
 825 wxString wxTextWidgetImpl::GetLineText(long lineNo) const
 826 {
 827     // TODO: change this if possible to reflect real lines
 828     wxString content = GetStringValue() ;
 829
 830     // Find line first
 831     int count = 0;
 832     for (size_t i = 0; i < content.length() ; i++)
 833     {
 834         if (count == lineNo)
 835         {
 836             // Add chars in line then
 837             wxString tmp;
 838
 839             for (size_t j = i; j < content.length(); j++)
 840             {
 841                 if (content[j] == '\n')
 842                     return tmp;
 843
 844                 tmp += content[j];
 845             }
 846
 847             return tmp;
 848         }
 849
 850         if (content[i] == '\n')
 851             count++;
 852     }
 853
 854     return wxEmptyString ;
 855 }
 856
 857 int wxTextWidgetImpl::GetLineLength(long lineNo) const
 858 {
 859     // TODO: change this if possible to reflect real lines
 860     wxString content = GetStringValue() ;
 861
 862     // Find line first
 863     int count = 0;
 864     for (size_t i = 0; i < content.length() ; i++)
 865     {
 866         if (count == lineNo)
 867         {
 868             // Count chars in line then
 869             count = 0;
 870             for (size_t j = i; j < content.length(); j++)
 871             {
 872                 count++;
 873                 if (content[j] == '\n')
 874                     return count;
 875             }
 876
 877             return count;
 878         }
 879
 880         if (content[i] == '\n')
 881             count++;
 882     }
 883
 884     return 0 ;
 885 }
 886
 887 #endif // wxUSE_TEXTCTRL