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_triggerOnSetValue = 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     // only now the embedding is correct and we can do a positioning update
 124
 125     MacSuperChangedPosition() ;
 126
 127     if ( m_windowStyle & wxTE_READONLY)
 128         SetEditable( false ) ;
 129
 130     SetCursor( wxCursor( wxCURSOR_IBEAM ) ) ;
 131
 132     return true;
 133 }
 134
 135 wxTextWidgetImpl* wxTextCtrl::GetTextPeer() const
 136 {
 137     return dynamic_cast<wxTextWidgetImpl*> (m_peer);
 138 }
 139
 140 void wxTextCtrl::MacSuperChangedPosition()
 141 {
 142     wxWindow::MacSuperChangedPosition() ;
 143 #if wxOSX_USE_CARBON
 144     GetPeer()->SuperChangedPosition() ;
 145 #endif
 146 }
 147
 148 void wxTextCtrl::MacVisibilityChanged()
 149 {
 150 #if wxOSX_USE_CARBON
 151     GetPeer()->VisibilityChanged( GetPeer()->IsVisible() );
 152 #endif
 153 }
 154
 155 void wxTextCtrl::MacCheckSpelling(bool check)
 156 {
 157     GetTextPeer()->CheckSpelling(check);
 158 }
 159
 160 wxString wxTextCtrl::DoGetValue() const
 161 {
 162     return GetTextPeer()->GetStringValue() ;
 163 }
 164
 165 void wxTextCtrl::GetSelection(long* from, long* to) const
 166 {
 167     GetTextPeer()->GetSelection( from , to ) ;
 168 }
 169
 170 void wxTextCtrl::DoSetValue(const wxString& str, int flags)
 171 {
 172     // optimize redraws
 173     if ( GetValue() == str )
 174         return;
 175
 176     GetTextPeer()->SetStringValue( str ) ;
 177
 178     if ( (flags & SetValue_SendEvent) && m_triggerOnSetValue )
 179     {
 180         SendTextUpdatedEvent();
 181     }
 182 }
 183
 184 void wxTextCtrl::SetMaxLength(unsigned long len)
 185 {
 186     m_maxLength = len ;
 187 }
 188
 189 bool wxTextCtrl::SetFont( const wxFont& font )
 190 {
 191     if ( !wxTextCtrlBase::SetFont( font ) )
 192         return false ;
 193
 194     GetPeer()->SetFont( font , GetForegroundColour() , GetWindowStyle(), false /* dont ignore black */ ) ;
 195
 196     return true ;
 197 }
 198
 199 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
 200 {
 201     GetTextPeer()->SetStyle( start , end , style ) ;
 202
 203     return true ;
 204 }
 205
 206 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
 207 {
 208     wxTextCtrlBase::SetDefaultStyle( style ) ;
 209     SetStyle( -1  /*current selection*/  , -1 /*current selection*/ , GetDefaultStyle() ) ;
 210
 211     return true ;
 212 }
 213
 214 // Clipboard operations
 215
 216 void wxTextCtrl::Copy()
 217 {
 218     if (CanCopy())
 219         GetTextPeer()->Copy() ;
 220 }
 221
 222 void wxTextCtrl::Cut()
 223 {
 224     if (CanCut())
 225     {
 226         GetTextPeer()->Cut() ;
 227
 228         wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, m_windowId );
 229         event.SetEventObject( this );
 230         HandleWindowEvent( event );
 231       }
 232 }
 233
 234 void wxTextCtrl::Paste()
 235 {
 236     if (CanPaste())
 237     {
 238         GetTextPeer()->Paste() ;
 239
 240         // TODO: eventually we should add setting the default style again
 241
 242         wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, m_windowId );
 243         event.SetEventObject( this );
 244         HandleWindowEvent( event );
 245     }
 246 }
 247
 248 bool wxTextCtrl::CanCopy() const
 249 {
 250     // Can copy if there's a selection
 251     long from, to;
 252     GetSelection( &from, &to );
 253
 254     return (from != to);
 255 }
 256
 257 bool wxTextCtrl::CanCut() const
 258 {
 259     if ( !IsEditable() )
 260         return false;
 261
 262     // Can cut if there's a selection
 263     long from, to;
 264     GetSelection( &from, &to );
 265
 266     return (from != to);
 267 }
 268
 269 bool wxTextCtrl::CanPaste() const
 270 {
 271     if (!IsEditable())
 272         return false;
 273
 274     return GetTextPeer()->CanPaste() ;
 275 }
 276
 277 void wxTextCtrl::SetEditable(bool editable)
 278 {
 279     if ( editable != m_editable )
 280     {
 281         m_editable = editable ;
 282         GetTextPeer()->SetEditable( editable ) ;
 283     }
 284 }
 285
 286 void wxTextCtrl::SetInsertionPoint(long pos)
 287 {
 288     SetSelection( pos , pos ) ;
 289 }
 290
 291 void wxTextCtrl::SetInsertionPointEnd()
 292 {
 293     long pos = GetLastPosition();
 294     SetInsertionPoint( pos );
 295 }
 296
 297 long wxTextCtrl::GetInsertionPoint() const
 298 {
 299     long begin, end ;
 300     GetSelection( &begin , &end ) ;
 301
 302     return begin ;
 303 }
 304
 305 wxTextPos wxTextCtrl::GetLastPosition() const
 306 {
 307     return GetTextPeer()->GetLastPosition() ;
 308 }
 309
 310 void wxTextCtrl::Replace(long from, long to, const wxString& str)
 311 {
 312     GetTextPeer()->Replace( from , to , str ) ;
 313 }
 314
 315 void wxTextCtrl::Remove(long from, long to)
 316 {
 317     GetTextPeer()->Remove( from , to ) ;
 318 }
 319
 320 void wxTextCtrl::SetSelection(long from, long to)
 321 {
 322     GetTextPeer()->SetSelection( from , to ) ;
 323 }
 324
 325 void wxTextCtrl::WriteText(const wxString& str)
 326 {
 327     GetTextPeer()->WriteText( str ) ;
 328 }
 329
 330 void wxTextCtrl::AppendText(const wxString& text)
 331 {
 332     SetInsertionPointEnd();
 333     WriteText( text );
 334 }
 335
 336 void wxTextCtrl::Clear()
 337 {
 338     GetTextPeer()->Clear() ;
 339 }
 340
 341 bool wxTextCtrl::IsModified() const
 342 {
 343     return m_dirty;
 344 }
 345
 346 bool wxTextCtrl::IsEditable() const
 347 {
 348     return IsEnabled() && m_editable ;
 349 }
 350
 351 bool wxTextCtrl::AcceptsFocus() const
 352 {
 353     // we don't want focus if we can't be edited
 354     return /*IsEditable() && */ wxControl::AcceptsFocus();
 355 }
 356
 357 wxSize wxTextCtrl::DoGetBestSize() const
 358 {
 359     int wText, hText;
 360
 361     // these are the numbers from the HIG:
 362     // we reduce them by the borders first
 363     wText = 100 ;
 364
 365     switch ( m_windowVariant )
 366     {
 367         case wxWINDOW_VARIANT_NORMAL :
 368             hText = 22 - 6 ;
 369             break ;
 370
 371         case wxWINDOW_VARIANT_SMALL :
 372             hText = 19 - 6 ;
 373             break ;
 374
 375         case wxWINDOW_VARIANT_MINI :
 376             hText = 15 - 6 ;
 377             break ;
 378
 379         default :
 380             hText = 22 - 6;
 381             break ;
 382     }
 383
 384     // as the above numbers have some free space around the text
 385     // we get 5 lines like this anyway
 386     if ( m_windowStyle & wxTE_MULTILINE )
 387          hText *= 5 ;
 388
 389     if ( !HasFlag(wxNO_BORDER) )
 390         hText += 6 ;
 391
 392     return wxSize(wText, hText);
 393 }
 394
 395 // ----------------------------------------------------------------------------
 396 // Undo/redo
 397 // ----------------------------------------------------------------------------
 398
 399 void wxTextCtrl::Undo()
 400 {
 401     if (CanUndo())
 402         GetTextPeer()->Undo() ;
 403 }
 404
 405 void wxTextCtrl::Redo()
 406 {
 407     if (CanRedo())
 408         GetTextPeer()->Redo() ;
 409 }
 410
 411 bool wxTextCtrl::CanUndo() const
 412 {
 413     if ( !IsEditable() )
 414         return false ;
 415
 416     return GetTextPeer()->CanUndo() ;
 417 }
 418
 419 bool wxTextCtrl::CanRedo() const
 420 {
 421     if ( !IsEditable() )
 422         return false ;
 423
 424     return GetTextPeer()->CanRedo() ;
 425 }
 426
 427 void wxTextCtrl::MarkDirty()
 428 {
 429     m_dirty = true;
 430 }
 431
 432 void wxTextCtrl::DiscardEdits()
 433 {
 434     m_dirty = false;
 435 }
 436
 437 int wxTextCtrl::GetNumberOfLines() const
 438 {
 439     return GetTextPeer()->GetNumberOfLines() ;
 440 }
 441
 442 long wxTextCtrl::XYToPosition(long x, long y) const
 443 {
 444     return GetTextPeer()->XYToPosition( x , y ) ;
 445 }
 446
 447 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
 448 {
 449     return GetTextPeer()->PositionToXY( pos , x , y ) ;
 450 }
 451
 452 void wxTextCtrl::ShowPosition(long pos)
 453 {
 454     return GetTextPeer()->ShowPosition(pos) ;
 455 }
 456
 457 int wxTextCtrl::GetLineLength(long lineNo) const
 458 {
 459     return GetTextPeer()->GetLineLength(lineNo) ;
 460 }
 461
 462 wxString wxTextCtrl::GetLineText(long lineNo) const
 463 {
 464     return GetTextPeer()->GetLineText(lineNo) ;
 465 }
 466
 467 void wxTextCtrl::Command(wxCommandEvent & event)
 468 {
 469     SetValue(event.GetString());
 470     ProcessCommand(event);
 471 }
 472
 473 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
 474 {
 475     // By default, load the first file into the text window.
 476     if (event.GetNumberOfFiles() > 0)
 477         LoadFile( event.GetFiles()[0] );
 478 }
 479
 480 void wxTextCtrl::OnChar(wxKeyEvent& event)
 481 {
 482     int key = event.GetKeyCode() ;
 483     bool eat_key = false ;
 484     long from, to;
 485
 486     if ( key == 'a' && event.MetaDown() )
 487     {
 488         SelectAll() ;
 489
 490         return ;
 491     }
 492
 493     if ( key == 'c' && event.MetaDown() )
 494     {
 495         if ( CanCopy() )
 496             Copy() ;
 497
 498         return ;
 499     }
 500
 501     if ( !IsEditable() && key != WXK_LEFT && key != WXK_RIGHT && key != WXK_DOWN && key != WXK_UP && key != WXK_TAB &&
 502         !( key == WXK_RETURN && ( (m_windowStyle & wxTE_PROCESS_ENTER) || (m_windowStyle & wxTE_MULTILINE) ) )
 503 //        && key != WXK_PAGEUP && key != WXK_PAGEDOWN && key != WXK_HOME && key != WXK_END
 504         )
 505     {
 506         // eat it
 507         return ;
 508     }
 509
 510     // Check if we have reached the max # of chars (if it is set), but still
 511     // allow navigation and deletion
 512     GetSelection( &from, &to );
 513     if ( !IsMultiLine() && m_maxLength && GetValue().length() >= m_maxLength &&
 514         key != WXK_LEFT && key != WXK_RIGHT && key != WXK_TAB && key != WXK_UP && key != WXK_DOWN &&
 515         key != WXK_BACK && key != WXK_DELETE && !( key == WXK_RETURN && (m_windowStyle & wxTE_PROCESS_ENTER) ) &&
 516         from == to )
 517     {
 518         // eat it, we don't want to add more than allowed # of characters
 519
 520         // TODO: generate EVT_TEXT_MAXLEN()
 521         return;
 522     }
 523
 524     // assume that any key not processed yet is going to modify the control
 525     m_dirty = true;
 526
 527     if ( key == 'v' && event.MetaDown() )
 528     {
 529         if ( CanPaste() )
 530             Paste() ;
 531
 532         return ;
 533     }
 534
 535     if ( key == 'x' && event.MetaDown() )
 536     {
 537         if ( CanCut() )
 538             Cut() ;
 539
 540         return ;
 541     }
 542
 543     switch ( key )
 544     {
 545         case WXK_RETURN:
 546             if (m_windowStyle & wxTE_PROCESS_ENTER)
 547             {
 548                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
 549                 event.SetEventObject( this );
 550                 event.SetString( GetValue() );
 551                 if ( HandleWindowEvent(event) )
 552                     return;
 553             }
 554
 555             if ( !(m_windowStyle & wxTE_MULTILINE) )
 556             {
 557                 wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
 558                 if ( tlw && tlw->GetDefaultItem() )
 559                 {
 560                     wxButton *def = wxDynamicCast(tlw->GetDefaultItem(), wxButton);
 561                     if ( def && def->IsEnabled() )
 562                     {
 563                         wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, def->GetId() );
 564                         event.SetEventObject(def);
 565                         def->Command(event);
 566
 567                         return ;
 568                     }
 569                 }
 570
 571                 // this will make wxWidgets eat the ENTER key so that
 572                 // we actually prevent line wrapping in a single line text control
 573                 eat_key = true;
 574             }
 575             break;
 576
 577         case WXK_TAB:
 578             if ( !(m_windowStyle & wxTE_PROCESS_TAB))
 579             {
 580                 int flags = 0;
 581                 if (!event.ShiftDown())
 582                     flags |= wxNavigationKeyEvent::IsForward ;
 583                 if (event.ControlDown())
 584                     flags |= wxNavigationKeyEvent::WinChange ;
 585                 Navigate(flags);
 586
 587                 return;
 588             }
 589             else
 590             {
 591                 // This is necessary (don't know why);
 592                 // otherwise the tab will not be inserted.
 593                 WriteText(wxT("\t"));
 594                 eat_key = true;
 595             }
 596             break;
 597
 598         default:
 599             break;
 600     }
 601
 602     if (!eat_key)
 603     {
 604         // perform keystroke handling
 605         event.Skip(true) ;
 606     }
 607
 608     if ( ( key >= 0x20 && key < WXK_START ) ||
 609          ( key >= WXK_NUMPAD0 && key <= WXK_DIVIDE ) ||
 610          key == WXK_RETURN ||
 611          key == WXK_DELETE ||
 612          key == WXK_BACK)
 613     {
 614         wxCommandEvent event1(wxEVT_COMMAND_TEXT_UPDATED, m_windowId);
 615         event1.SetEventObject( this );
 616         wxPostEvent( GetEventHandler(), event1 );
 617     }
 618 }
 619
 620 // ----------------------------------------------------------------------------
 621 // standard handlers for standard edit menu events
 622 // ----------------------------------------------------------------------------
 623
 624 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
 625 {
 626     Cut();
 627 }
 628
 629 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
 630 {
 631     Copy();
 632 }
 633
 634 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
 635 {
 636     Paste();
 637 }
 638
 639 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
 640 {
 641     Undo();
 642 }
 643
 644 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
 645 {
 646     Redo();
 647 }
 648
 649 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
 650 {
 651     long from, to;
 652
 653     GetSelection( &from, &to );
 654     if (from != -1 && to != -1)
 655         Remove( from, to );
 656 }
 657
 658 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
 659 {
 660     SetSelection(-1, -1);
 661 }
 662
 663 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
 664 {
 665     event.Enable( CanCut() );
 666 }
 667
 668 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
 669 {
 670     event.Enable( CanCopy() );
 671 }
 672
 673 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
 674 {
 675     event.Enable( CanPaste() );
 676 }
 677
 678 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
 679 {
 680     event.Enable( CanUndo() );
 681 }
 682
 683 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
 684 {
 685     event.Enable( CanRedo() );
 686 }
 687
 688 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
 689 {
 690     long from, to;
 691
 692     GetSelection( &from, &to );
 693     event.Enable( from != -1 && to != -1 && from != to && IsEditable() ) ;
 694 }
 695
 696 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
 697 {
 698     event.Enable(GetLastPosition() > 0);
 699 }
 700
 701 // CS: Context Menus only work with MLTE implementations or non-multiline HIViews at the moment
 702
 703 void wxTextCtrl::OnContextMenu(wxContextMenuEvent& event)
 704 {
 705     if ( GetTextPeer()->HasOwnContextMenu() )
 706     {
 707         event.Skip() ;
 708         return ;
 709     }
 710
 711 #if wxUSE_MENUS
 712     if (m_privateContextMenu == NULL)
 713     {
 714         m_privateContextMenu = new wxMenu;
 715         m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
 716         m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
 717         m_privateContextMenu->AppendSeparator();
 718         m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
 719         m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
 720         m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
 721         m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
 722         m_privateContextMenu->AppendSeparator();
 723         m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
 724     }
 725
 726     if (m_privateContextMenu != NULL)
 727         PopupMenu(m_privateContextMenu);
 728 #endif
 729 }
 730
 731 bool wxTextCtrl::MacSetupCursor( const wxPoint& pt )
 732 {
 733     if ( !GetTextPeer()->SetupCursor( pt ) )
 734         return wxWindow::MacSetupCursor( pt ) ;
 735     else
 736         return true ;
 737 }
 738
 739 // ----------------------------------------------------------------------------
 740 // implementation base class
 741 // ----------------------------------------------------------------------------
 742
 743 void wxTextWidgetImpl::SetStyle(long WXUNUSED(start),
 744                                 long WXUNUSED(end),
 745                                 const wxTextAttr& WXUNUSED(style))
 746 {
 747 }
 748
 749 void wxTextWidgetImpl::Copy()
 750 {
 751 }
 752
 753 void wxTextWidgetImpl::Cut()
 754 {
 755 }
 756
 757 void wxTextWidgetImpl::Paste()
 758 {
 759 }
 760
 761 bool wxTextWidgetImpl::CanPaste() const
 762 {
 763     return false ;
 764 }
 765
 766 void wxTextWidgetImpl::SetEditable(bool WXUNUSED(editable))
 767 {
 768 }
 769
 770 long wxTextWidgetImpl::GetLastPosition() const
 771 {
 772     return GetStringValue().length() ;
 773 }
 774
 775 void wxTextWidgetImpl::Replace( long from , long to , const wxString &val )
 776 {
 777     SetSelection( from , to ) ;
 778     WriteText( val ) ;
 779 }
 780
 781 void wxTextWidgetImpl::Remove( long from , long to )
 782 {
 783     SetSelection( from , to ) ;
 784     WriteText( wxEmptyString) ;
 785 }
 786
 787 void wxTextWidgetImpl::Clear()
 788 {
 789     SetStringValue( wxEmptyString ) ;
 790 }
 791
 792 bool wxTextWidgetImpl::CanUndo() const
 793 {
 794     return false ;
 795 }
 796
 797 void wxTextWidgetImpl::Undo()
 798 {
 799 }
 800
 801 bool wxTextWidgetImpl::CanRedo()  const
 802 {
 803     return false ;
 804 }
 805
 806 void wxTextWidgetImpl::Redo()
 807 {
 808 }
 809
 810 long wxTextWidgetImpl::XYToPosition(long WXUNUSED(x), long WXUNUSED(y)) const
 811 {
 812     return 0 ;
 813 }
 814
 815 bool wxTextWidgetImpl::PositionToXY(long WXUNUSED(pos),
 816                                     long *WXUNUSED(x),
 817                                     long *WXUNUSED(y)) const
 818 {
 819     return false ;
 820 }
 821
 822 void wxTextWidgetImpl::ShowPosition( long WXUNUSED(pos) )
 823 {
 824 }
 825
 826 int wxTextWidgetImpl::GetNumberOfLines() const
 827 {
 828     ItemCount lines = 0 ;
 829     wxString content = GetStringValue() ;
 830     lines = 1;
 831
 832     for (size_t i = 0; i < content.length() ; i++)
 833     {
 834         if (content[i] == '\r')
 835             lines++;
 836     }
 837
 838     return lines ;
 839 }
 840
 841 wxString wxTextWidgetImpl::GetLineText(long lineNo) const
 842 {
 843     // TODO: change this if possible to reflect real lines
 844     wxString content = GetStringValue() ;
 845
 846     // Find line first
 847     int count = 0;
 848     for (size_t i = 0; i < content.length() ; i++)
 849     {
 850         if (count == lineNo)
 851         {
 852             // Add chars in line then
 853             wxString tmp;
 854
 855             for (size_t j = i; j < content.length(); j++)
 856             {
 857                 if (content[j] == '\n')
 858                     return tmp;
 859
 860                 tmp += content[j];
 861             }
 862
 863             return tmp;
 864         }
 865
 866         if (content[i] == '\n')
 867             count++;
 868     }
 869
 870     return wxEmptyString ;
 871 }
 872
 873 int wxTextWidgetImpl::GetLineLength(long lineNo) const
 874 {
 875     // TODO: change this if possible to reflect real lines
 876     wxString content = GetStringValue() ;
 877
 878     // Find line first
 879     int count = 0;
 880     for (size_t i = 0; i < content.length() ; i++)
 881     {
 882         if (count == lineNo)
 883         {
 884             // Count chars in line then
 885             count = 0;
 886             for (size_t j = i; j < content.length(); j++)
 887             {
 888                 count++;
 889                 if (content[j] == '\n')
 890                     return count;
 891             }
 892
 893             return count;
 894         }
 895
 896         if (content[i] == '\n')
 897             count++;
 898     }
 899
 900     return 0 ;
 901 }
 902
 903 #endif // wxUSE_TEXTCTRL