src/msw/textctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/textctrl.cpp
   3 // Purpose:     wxTextCtrl
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  17     #pragma implementation "textctrl.h"
  18 #endif
  19
  20 // ----------------------------------------------------------------------------
  21 // headers
  22 // ----------------------------------------------------------------------------
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_TEXTCTRL && !defined(__SMARTPHONE__)
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/textctrl.h"
  35     #include "wx/settings.h"
  36     #include "wx/brush.h"
  37     #include "wx/utils.h"
  38     #include "wx/intl.h"
  39     #include "wx/log.h"
  40     #include "wx/app.h"
  41     #include "wx/menu.h"
  42 #endif
  43
  44 #include "wx/module.h"
  45
  46 #if wxUSE_CLIPBOARD
  47     #include "wx/clipbrd.h"
  48 #endif
  49
  50 #include "wx/textfile.h"
  51
  52 #include <windowsx.h>
  53
  54 #include "wx/msw/private.h"
  55 #include "wx/msw/winundef.h"
  56
  57 #include <string.h>
  58 #include <stdlib.h>
  59
  60 #ifndef __WXWINCE__
  61 #include <sys/types.h>
  62 #endif
  63
  64 #if wxUSE_RICHEDIT
  65
  66 // old mingw32 has richedit stuff directly in windows.h and doesn't have
  67 // richedit.h at all
  68 #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
  69     #include <richedit.h>
  70 #endif
  71
  72 #include "wx/msw/missing.h"
  73
  74 #endif // wxUSE_RICHEDIT
  75
  76 // ----------------------------------------------------------------------------
  77 // private classes
  78 // ----------------------------------------------------------------------------
  79
  80 #if wxUSE_RICHEDIT
  81
  82 // this module initializes RichEdit DLL(s) if needed
  83 class wxRichEditModule : public wxModule
  84 {
  85 public:
  86     virtual bool OnInit();
  87     virtual void OnExit();
  88
  89     // load the richedit DLL of at least of required version
  90     static bool Load(int version = 1);
  91
  92 private:
  93     // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
  94     static HINSTANCE ms_hRichEdit[2];
  95
  96     DECLARE_DYNAMIC_CLASS(wxRichEditModule)
  97 };
  98
  99 HINSTANCE wxRichEditModule::ms_hRichEdit[2] = { NULL, NULL };
 100
 101 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
 102
 103 #endif // wxUSE_RICHEDIT
 104
 105 // ----------------------------------------------------------------------------
 106 // event tables and other macros
 107 // ----------------------------------------------------------------------------
 108
 109 #if wxUSE_EXTENDED_RTTI
 110 WX_DEFINE_FLAGS( wxTextCtrlStyle )
 111
 112 wxBEGIN_FLAGS( wxTextCtrlStyle )
 113     // new style border flags, we put them first to
 114     // use them for streaming out
 115     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
 116     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
 117     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
 118     wxFLAGS_MEMBER(wxBORDER_RAISED)
 119     wxFLAGS_MEMBER(wxBORDER_STATIC)
 120     wxFLAGS_MEMBER(wxBORDER_NONE)
 121
 122     // old style border flags
 123     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
 124     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
 125     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
 126     wxFLAGS_MEMBER(wxRAISED_BORDER)
 127     wxFLAGS_MEMBER(wxSTATIC_BORDER)
 128     wxFLAGS_MEMBER(wxBORDER)
 129
 130     // standard window styles
 131     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
 132     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
 133     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
 134     wxFLAGS_MEMBER(wxWANTS_CHARS)
 135     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
 136     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
 137     wxFLAGS_MEMBER(wxVSCROLL)
 138     wxFLAGS_MEMBER(wxHSCROLL)
 139
 140     wxFLAGS_MEMBER(wxTE_PROCESS_ENTER)
 141     wxFLAGS_MEMBER(wxTE_PROCESS_TAB)
 142     wxFLAGS_MEMBER(wxTE_MULTILINE)
 143     wxFLAGS_MEMBER(wxTE_PASSWORD)
 144     wxFLAGS_MEMBER(wxTE_READONLY)
 145     wxFLAGS_MEMBER(wxHSCROLL)
 146     wxFLAGS_MEMBER(wxTE_RICH)
 147     wxFLAGS_MEMBER(wxTE_RICH2)
 148     wxFLAGS_MEMBER(wxTE_AUTO_URL)
 149     wxFLAGS_MEMBER(wxTE_NOHIDESEL)
 150     wxFLAGS_MEMBER(wxTE_LEFT)
 151     wxFLAGS_MEMBER(wxTE_CENTRE)
 152     wxFLAGS_MEMBER(wxTE_RIGHT)
 153     wxFLAGS_MEMBER(wxTE_DONTWRAP)
 154     wxFLAGS_MEMBER(wxTE_LINEWRAP)
 155     wxFLAGS_MEMBER(wxTE_WORDWRAP)
 156
 157 wxEND_FLAGS( wxTextCtrlStyle )
 158
 159 IMPLEMENT_DYNAMIC_CLASS_XTI(wxTextCtrl, wxControl,"wx/textctrl.h")
 160
 161 wxBEGIN_PROPERTIES_TABLE(wxTextCtrl)
 162     wxEVENT_PROPERTY( TextUpdated , wxEVT_COMMAND_TEXT_UPDATED , wxCommandEvent )
 163     wxEVENT_PROPERTY( TextEnter , wxEVT_COMMAND_TEXT_ENTER , wxCommandEvent )
 164
 165     wxPROPERTY( Font , wxFont , SetFont , GetFont  , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
 166     wxPROPERTY( Value , wxString , SetValue, GetValue, wxString() , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 167     wxPROPERTY_FLAGS( WindowStyle , wxTextCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
 168 wxEND_PROPERTIES_TABLE()
 169
 170 wxBEGIN_HANDLERS_TABLE(wxTextCtrl)
 171 wxEND_HANDLERS_TABLE()
 172
 173 wxCONSTRUCTOR_6( wxTextCtrl , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size , long , WindowStyle)
 174 #else
 175 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
 176 #endif
 177
 178
 179 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 180     EVT_CHAR(wxTextCtrl::OnChar)
 181     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 182
 183 #if wxUSE_RICHEDIT
 184     EVT_RIGHT_UP(wxTextCtrl::OnRightClick)
 185 #endif
 186
 187     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 188     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 189     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 190     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 191     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 192     EVT_MENU(wxID_CLEAR, wxTextCtrl::OnDelete)
 193     EVT_MENU(wxID_SELECTALL, wxTextCtrl::OnSelectAll)
 194
 195     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 196     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 197     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 198     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 199     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 200     EVT_UPDATE_UI(wxID_CLEAR, wxTextCtrl::OnUpdateDelete)
 201     EVT_UPDATE_UI(wxID_SELECTALL, wxTextCtrl::OnUpdateSelectAll)
 202
 203     EVT_SET_FOCUS(wxTextCtrl::OnSetFocus)
 204 END_EVENT_TABLE()
 205
 206 // ============================================================================
 207 // implementation
 208 // ============================================================================
 209
 210 // ----------------------------------------------------------------------------
 211 // creation
 212 // ----------------------------------------------------------------------------
 213
 214 void wxTextCtrl::Init()
 215 {
 216 #if wxUSE_RICHEDIT
 217     m_verRichEdit = 0;
 218 #endif // wxUSE_RICHEDIT
 219
 220     m_privateContextMenu = NULL;
 221     m_suppressNextUpdate = false;
 222     m_isNativeCaretShown = true;
 223 }
 224
 225 wxTextCtrl::~wxTextCtrl()
 226 {
 227     if (m_privateContextMenu)
 228     {
 229         delete m_privateContextMenu;
 230         m_privateContextMenu = NULL;
 231     }
 232 }
 233
 234 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
 235                         const wxString& value,
 236                         const wxPoint& pos,
 237                         const wxSize& size,
 238                         long style,
 239                         const wxValidator& validator,
 240                         const wxString& name)
 241 {
 242 #ifdef __WXWINCE__
 243     if ((style & wxBORDER_MASK) == 0)
 244         style |= wxBORDER_SIMPLE;
 245 #endif
 246
 247     // base initialization
 248     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
 249         return false;
 250
 251     // translate wxWin style flags to MSW ones
 252     WXDWORD msStyle = MSWGetCreateWindowFlags();
 253
 254     // do create the control - either an EDIT or RICHEDIT
 255     wxString windowClass = wxT("EDIT");
 256
 257 #if wxUSE_RICHEDIT
 258     if ( m_windowStyle & wxTE_AUTO_URL )
 259     {
 260         // automatic URL detection only works in RichEdit 2.0+
 261         m_windowStyle |= wxTE_RICH2;
 262     }
 263
 264     if ( m_windowStyle & wxTE_RICH2 )
 265     {
 266         // using richedit 2.0 implies using wxTE_RICH
 267         m_windowStyle |= wxTE_RICH;
 268     }
 269
 270     // we need to load the richedit DLL before creating the rich edit control
 271     if ( m_windowStyle & wxTE_RICH )
 272     {
 273         static bool s_errorGiven = false;// MT-FIXME
 274
 275         // Which version do we need? Use 1.0 by default because it is much more
 276         // like the the standard EDIT or 2.0 if explicitly requested, but use
 277         // only 2.0 in Unicode mode as 1.0 doesn't support Unicode at all
 278         //
 279         // TODO: RichEdit 3.0 is apparently capable of emulating RichEdit 1.0
 280         //       (and thus EDIT) much better than RichEdit 2.0 so we probably
 281         //       should use 3.0 if available as it is the best of both worlds -
 282         //       but as I can't test it right now I don't do it (VZ)
 283 #if wxUSE_UNICODE
 284         const int verRichEdit = 2;
 285 #else // !wxUSE_UNICODE
 286         int verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
 287 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 288
 289         // only give the error msg once if the DLL can't be loaded
 290         if ( !s_errorGiven )
 291         {
 292             // try to load the RichEdit DLL (will do nothing if already done)
 293             if ( !wxRichEditModule::Load(verRichEdit) )
 294             {
 295 #if !wxUSE_UNICODE
 296                 // try another version?
 297                 verRichEdit = 3 - verRichEdit; // 1 <-> 2
 298
 299                 if ( !wxRichEditModule::Load(verRichEdit) )
 300 #endif // wxUSE_UNICODE
 301                 {
 302                     wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 303
 304                     s_errorGiven = true;
 305                 }
 306             }
 307         }
 308
 309         // have we managed to load any richedit version?
 310         if ( !s_errorGiven )
 311         {
 312             m_verRichEdit = verRichEdit;
 313             if ( m_verRichEdit == 1 )
 314             {
 315                 windowClass = wxT("RICHEDIT");
 316             }
 317             else
 318             {
 319 #ifndef RICHEDIT_CLASS
 320                 wxString RICHEDIT_CLASS;
 321                 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
 322 #if wxUSE_UNICODE
 323                 RICHEDIT_CLASS += _T('W');
 324 #else // ANSI
 325                 RICHEDIT_CLASS += _T('A');
 326 #endif // Unicode/ANSI
 327 #endif // !RICHEDIT_CLASS
 328
 329                 windowClass = RICHEDIT_CLASS;
 330             }
 331         }
 332     }
 333 #endif // wxUSE_RICHEDIT
 334
 335     // we need to turn '\n's into "\r\n"s for the multiline controls
 336     wxString valueWin;
 337     if ( m_windowStyle & wxTE_MULTILINE )
 338     {
 339         valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
 340     }
 341     else // single line
 342     {
 343         valueWin = value;
 344     }
 345
 346     if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
 347         return false;
 348
 349     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 350
 351 #if wxUSE_RICHEDIT
 352     if ( IsRich() )
 353     {
 354         // enable the events we're interested in: we want to get EN_CHANGE as
 355         // for the normal controls
 356         LPARAM mask = ENM_CHANGE;
 357
 358         if ( GetRichVersion() == 1 )
 359         {
 360             // we also need EN_MSGFILTER for richedit 1.0 for the reasons
 361             // explained in its handler
 362            mask |= ENM_MOUSEEVENTS;
 363         }
 364         else if ( m_windowStyle & wxTE_AUTO_URL )
 365         {
 366             mask |= ENM_LINK;
 367
 368             ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
 369         }
 370
 371         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
 372     }
 373 #endif // wxUSE_RICHEDIT
 374
 375     return true;
 376 }
 377
 378 // Make sure the window style (etc.) reflects the HWND style (roughly)
 379 void wxTextCtrl::AdoptAttributesFromHWND()
 380 {
 381     wxWindow::AdoptAttributesFromHWND();
 382
 383     HWND hWnd = GetHwnd();
 384     long style = ::GetWindowLong(hWnd, GWL_STYLE);
 385
 386     // retrieve the style to see whether this is an edit or richedit ctrl
 387 #if wxUSE_RICHEDIT
 388     wxString classname = wxGetWindowClass(GetHWND());
 389
 390     if ( classname.IsSameAs(_T("EDIT"), false /* no case */) )
 391     {
 392         m_verRichEdit = 0;
 393     }
 394     else // rich edit?
 395     {
 396         wxChar c;
 397         if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
 398         {
 399             wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
 400
 401             m_verRichEdit = 0;
 402         }
 403     }
 404 #endif // wxUSE_RICHEDIT
 405
 406     if (style & ES_MULTILINE)
 407         m_windowStyle |= wxTE_MULTILINE;
 408     if (style & ES_PASSWORD)
 409         m_windowStyle |= wxTE_PASSWORD;
 410     if (style & ES_READONLY)
 411         m_windowStyle |= wxTE_READONLY;
 412     if (style & ES_WANTRETURN)
 413         m_windowStyle |= wxTE_PROCESS_ENTER;
 414     if (style & ES_CENTER)
 415         m_windowStyle |= wxTE_CENTRE;
 416     if (style & ES_RIGHT)
 417         m_windowStyle |= wxTE_RIGHT;
 418 }
 419
 420 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 421 {
 422     long msStyle = wxControl::MSWGetStyle(style, exstyle);
 423
 424     // styles which we alaways add by default
 425     if ( style & wxTE_MULTILINE )
 426     {
 427         wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
 428                       wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
 429
 430         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 431         if ( !(style & wxTE_NO_VSCROLL) )
 432         {
 433             // always adjust the vertical scrollbar automatically if we have it
 434             msStyle |= WS_VSCROLL | ES_AUTOVSCROLL;
 435
 436 #if wxUSE_RICHEDIT
 437             // we have to use this style for the rich edit controls because
 438             // without it the vertical scrollbar never appears at all in
 439             // richedit 3.0 because of our ECO_NOHIDESEL hack (search for it)
 440             if ( style & wxTE_RICH2 )
 441             {
 442                 msStyle |= ES_DISABLENOSCROLL;
 443             }
 444 #endif // wxUSE_RICHEDIT
 445         }
 446
 447         style |= wxTE_PROCESS_ENTER;
 448     }
 449     else // !multiline
 450     {
 451         // there is really no reason to not have this style for single line
 452         // text controls
 453         msStyle |= ES_AUTOHSCROLL;
 454     }
 455
 456     // note that wxTE_DONTWRAP is the same as wxHSCROLL so if we have a horz
 457     // scrollbar, there is no wrapping -- which makes sense
 458     if ( style & wxTE_DONTWRAP )
 459     {
 460         // automatically scroll the control horizontally as necessary
 461         //
 462         // NB: ES_AUTOHSCROLL is needed for richedit controls or they don't
 463         //     show horz scrollbar at all, even in spite of WS_HSCROLL, and as
 464         //     it doesn't seem to do any harm for plain edit controls, add it
 465         //     always
 466         msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
 467     }
 468
 469     if ( style & wxTE_READONLY )
 470         msStyle |= ES_READONLY;
 471
 472     if ( style & wxTE_PASSWORD )
 473         msStyle |= ES_PASSWORD;
 474
 475     if ( style & wxTE_NOHIDESEL )
 476         msStyle |= ES_NOHIDESEL;
 477
 478     // note that we can't do do "& wxTE_LEFT" as wxTE_LEFT == 0
 479     if ( style & wxTE_CENTRE )
 480         msStyle |= ES_CENTER;
 481     else if ( style & wxTE_RIGHT )
 482         msStyle |= ES_RIGHT;
 483     else
 484         msStyle |= ES_LEFT; // ES_LEFT is 0 as well but for consistency...
 485
 486     return msStyle;
 487 }
 488
 489 void wxTextCtrl::SetWindowStyleFlag(long style)
 490 {
 491 #if wxUSE_RICHEDIT
 492     // we have to deal with some styles separately because they can't be
 493     // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
 494     // using richedit-specific EM_SETOPTIONS
 495     if ( IsRich() &&
 496             ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
 497     {
 498         bool set = (style & wxTE_NOHIDESEL) != 0;
 499
 500         ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
 501                       set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
 502     }
 503 #endif // wxUSE_RICHEDIT
 504
 505     wxControl::SetWindowStyleFlag(style);
 506 }
 507
 508 // ----------------------------------------------------------------------------
 509 // set/get the controls text
 510 // ----------------------------------------------------------------------------
 511
 512 wxString wxTextCtrl::GetValue() const
 513 {
 514     // range 0..-1 is special for GetRange() and means to retrieve all text
 515     return GetRange(0, -1);
 516 }
 517
 518 wxString wxTextCtrl::GetRange(long from, long to) const
 519 {
 520     wxString str;
 521
 522     if ( from >= to && to != -1 )
 523     {
 524         // nothing to retrieve
 525         return str;
 526     }
 527
 528 #if wxUSE_RICHEDIT
 529     if ( IsRich() )
 530     {
 531         int len = GetWindowTextLength(GetHwnd());
 532         if ( len > from )
 533         {
 534             if ( to == -1 )
 535                 to = len;
 536
 537 #if !wxUSE_UNICODE
 538             // we must use EM_STREAMOUT if we don't want to lose all characters
 539             // not representable in the current character set (EM_GETTEXTRANGE
 540             // simply replaces them with question marks...)
 541             if ( GetRichVersion() > 1 )
 542             {
 543                 // we must have some encoding, otherwise any 8bit chars in the
 544                 // control are simply *lost* (replaced by '?')
 545                 wxFontEncoding encoding = wxFONTENCODING_SYSTEM;
 546
 547                 wxFont font = m_defaultStyle.GetFont();
 548                 if ( !font.Ok() )
 549                     font = GetFont();
 550
 551                 if ( font.Ok() )
 552                 {
 553                    encoding = font.GetEncoding();
 554                 }
 555
 556                 if ( encoding == wxFONTENCODING_SYSTEM )
 557                 {
 558                     encoding = wxLocale::GetSystemEncoding();
 559                 }
 560
 561                 if ( encoding == wxFONTENCODING_SYSTEM )
 562                 {
 563                     encoding = wxFONTENCODING_ISO8859_1;
 564                 }
 565
 566                 str = StreamOut(encoding);
 567
 568                 if ( !str.empty() )
 569                 {
 570                     // we have to manually extract the required part, luckily
 571                     // this is easy in this case as EOL characters in str are
 572                     // just LFs because we remove CRs in wxRichEditStreamOut
 573                     str = str.Mid(from, to - from);
 574                 }
 575             }
 576
 577             // StreamOut() wasn't used or failed, try to do it in normal way
 578             if ( str.empty() )
 579 #endif // !wxUSE_UNICODE
 580             {
 581                 // alloc one extra WORD as needed by the control
 582                 wxStringBuffer tmp(str, ++len);
 583                 wxChar *p = tmp;
 584
 585                 TEXTRANGE textRange;
 586                 textRange.chrg.cpMin = from;
 587                 textRange.chrg.cpMax = to;
 588                 textRange.lpstrText = p;
 589
 590                 (void)::SendMessage(GetHwnd(), EM_GETTEXTRANGE,
 591                                     0, (LPARAM)&textRange);
 592
 593                 if ( m_verRichEdit > 1 )
 594                 {
 595                     // RichEdit 2.0 uses just CR ('\r') for the
 596                     // newlines which is neither Unix nor Windows
 597                     // style - convert it to something reasonable
 598                     for ( ; *p; p++ )
 599                     {
 600                         if ( *p == _T('\r') )
 601                             *p = _T('\n');
 602                     }
 603                 }
 604             }
 605
 606             if ( m_verRichEdit == 1 )
 607             {
 608                 // convert to the canonical form - see comment below
 609                 str = wxTextFile::Translate(str, wxTextFileType_Unix);
 610             }
 611         }
 612         //else: no text at all, leave the string empty
 613     }
 614     else
 615 #endif // wxUSE_RICHEDIT
 616     {
 617         // retrieve all text
 618         str = wxGetWindowText(GetHWND());
 619
 620         // need only a range?
 621         if ( from < to )
 622         {
 623             str = str.Mid(from, to - from);
 624         }
 625
 626         // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 627         // canonical one (same one as above) for consistency with the other kinds
 628         // of controls and, more importantly, with the other ports
 629         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 630     }
 631
 632     return str;
 633 }
 634
 635 void wxTextCtrl::SetValue(const wxString& value)
 636 {
 637     // if the text is long enough, it's faster to just set it instead of first
 638     // comparing it with the old one (chances are that it will be different
 639     // anyhow, this comparison is there to avoid flicker for small single-line
 640     // edit controls mostly)
 641     if ( (value.length() > 0x400) || (value != GetValue()) )
 642     {
 643         DoWriteText(value, false /* not selection only */);
 644
 645         // for compatibility, don't move the cursor when doing SetValue()
 646         SetInsertionPoint(0);
 647     }
 648     else // same text
 649     {
 650         // still send an event for consistency
 651         SendUpdateEvent();
 652     }
 653
 654     // we should reset the modified flag even if the value didn't really change
 655
 656     // mark the control as being not dirty - we changed its text, not the
 657     // user
 658     DiscardEdits();
 659 }
 660
 661 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 662
 663 // TODO: using memcpy() would improve performance a lot for big amounts of text
 664
 665 DWORD CALLBACK
 666 wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 667 {
 668     *pcb = 0;
 669
 670     const wchar_t ** const ppws = (const wchar_t **)dwCookie;
 671
 672     wchar_t *wbuf = (wchar_t *)buf;
 673     const wchar_t *wpc = *ppws;
 674     while ( cb && *wpc )
 675     {
 676         *wbuf++ = *wpc++;
 677
 678         cb -= sizeof(wchar_t);
 679         (*pcb) += sizeof(wchar_t);
 680     }
 681
 682     *ppws = wpc;
 683
 684     return 0;
 685 }
 686
 687 // helper struct used to pass parameters from wxTextCtrl to wxRichEditStreamOut
 688 struct wxStreamOutData
 689 {
 690     wchar_t *wpc;
 691     size_t len;
 692 };
 693
 694 DWORD CALLBACK
 695 wxRichEditStreamOut(DWORD_PTR dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 696 {
 697     *pcb = 0;
 698
 699     wxStreamOutData *data = (wxStreamOutData *)dwCookie;
 700
 701     const wchar_t *wbuf = (const wchar_t *)buf;
 702     wchar_t *wpc = data->wpc;
 703     while ( cb )
 704     {
 705         wchar_t wch = *wbuf++;
 706
 707         // turn "\r\n" into "\n" on the fly
 708         if ( wch != L'\r' )
 709             *wpc++ = wch;
 710         else
 711             data->len--;
 712
 713         cb -= sizeof(wchar_t);
 714         (*pcb) += sizeof(wchar_t);
 715     }
 716
 717     data->wpc = wpc;
 718
 719     return 0;
 720 }
 721
 722
 723 #if wxUSE_UNICODE_MSLU
 724     #define UNUSED_IF_MSLU(param)
 725 #else
 726     #define UNUSED_IF_MSLU(param) param
 727 #endif
 728
 729 bool
 730 wxTextCtrl::StreamIn(const wxString& value,
 731                      wxFontEncoding UNUSED_IF_MSLU(encoding),
 732                      bool selectionOnly)
 733 {
 734 #if wxUSE_UNICODE_MSLU
 735     const wchar_t *wpc = value.c_str();
 736 #else // !wxUSE_UNICODE_MSLU
 737     wxCSConv conv(encoding);
 738
 739     const size_t len = conv.MB2WC(NULL, value, value.length());
 740
 741 #if wxUSE_WCHAR_T
 742     wxWCharBuffer wchBuf(len);
 743     wchar_t *wpc = wchBuf.data();
 744 #else
 745     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 746     wchar_t *wpc = wchBuf;
 747 #endif
 748
 749     conv.MB2WC(wpc, value, value.length());
 750 #endif // wxUSE_UNICODE_MSLU
 751
 752     // finally, stream it in the control
 753     EDITSTREAM eds;
 754     wxZeroMemory(eds);
 755     eds.dwCookie = (DWORD)&wpc;
 756     // the cast below is needed for broken (very) old mingw32 headers
 757     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 758
 759     // we're going to receive 2 EN_CHANGE notifications if we got any selection
 760     // (same problem as in DoWriteText())
 761     if ( selectionOnly && HasSelection() )
 762     {
 763         // so suppress one of them
 764         m_suppressNextUpdate = true;
 765     }
 766
 767     ::SendMessage(GetHwnd(), EM_STREAMIN,
 768                   SF_TEXT |
 769                   SF_UNICODE |
 770                   (selectionOnly ? SFF_SELECTION : 0),
 771                   (LPARAM)&eds);
 772
 773     if ( eds.dwError )
 774     {
 775         wxLogLastError(_T("EM_STREAMIN"));
 776     }
 777
 778 #if !wxUSE_WCHAR_T
 779     free(wchBuf);
 780 #endif // !wxUSE_WCHAR_T
 781
 782     return true;
 783 }
 784
 785 #if !wxUSE_UNICODE_MSLU
 786
 787 wxString
 788 wxTextCtrl::StreamOut(wxFontEncoding encoding, bool selectionOnly) const
 789 {
 790     wxString out;
 791
 792     const int len = GetWindowTextLength(GetHwnd());
 793
 794 #if wxUSE_WCHAR_T
 795     wxWCharBuffer wchBuf(len);
 796     wchar_t *wpc = wchBuf.data();
 797 #else
 798     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 799     wchar_t *wpc = wchBuf;
 800 #endif
 801
 802     wxStreamOutData data;
 803     data.wpc = wpc;
 804     data.len = len;
 805
 806     EDITSTREAM eds;
 807     wxZeroMemory(eds);
 808     eds.dwCookie = (DWORD)&data;
 809     eds.pfnCallback = wxRichEditStreamOut;
 810
 811     ::SendMessage
 812       (
 813         GetHwnd(),
 814         EM_STREAMOUT,
 815         SF_TEXT | SF_UNICODE | (selectionOnly ? SFF_SELECTION : 0),
 816         (LPARAM)&eds
 817       );
 818
 819     if ( eds.dwError )
 820     {
 821         wxLogLastError(_T("EM_STREAMOUT"));
 822     }
 823     else // streamed out ok
 824     {
 825         // NUL-terminate the string because its length could have been
 826         // decreased by wxRichEditStreamOut
 827         *(wchBuf.data() + data.len) = L'\0';
 828
 829         // now convert to the given encoding (this is a possibly lossful
 830         // conversion but what else can we do)
 831         wxCSConv conv(encoding);
 832         size_t lenNeeded = conv.WC2MB(NULL, wchBuf, 0);
 833         if ( lenNeeded++ )
 834         {
 835             conv.WC2MB(wxStringBuffer(out, lenNeeded), wchBuf, lenNeeded);
 836         }
 837     }
 838
 839 #if !wxUSE_WCHAR_T
 840     free(wchBuf);
 841 #endif // !wxUSE_WCHAR_T
 842
 843     return out;
 844 }
 845
 846 #endif // !wxUSE_UNICODE_MSLU
 847
 848 #endif // wxUSE_RICHEDIT
 849
 850 void wxTextCtrl::WriteText(const wxString& value)
 851 {
 852     DoWriteText(value);
 853 }
 854
 855 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
 856 {
 857     wxString valueDos;
 858     if ( m_windowStyle & wxTE_MULTILINE )
 859         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 860     else
 861         valueDos = value;
 862
 863 #if wxUSE_RICHEDIT
 864     // there are several complications with the rich edit controls here
 865     bool done = false;
 866     if ( IsRich() )
 867     {
 868         // first, ensure that the new text will be in the default style
 869         if ( !m_defaultStyle.IsDefault() )
 870         {
 871             long start, end;
 872             GetSelection(&start, &end);
 873             SetStyle(start, end, m_defaultStyle);
 874         }
 875
 876 #if wxUSE_UNICODE_MSLU
 877         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
 878         // but EM_STREAMIN works
 879         if ( wxUsingUnicowsDll() && GetRichVersion() > 1 )
 880         {
 881            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
 882         }
 883 #endif // wxUSE_UNICODE_MSLU
 884
 885 #if !wxUSE_UNICODE
 886         // next check if the text we're inserting must be shown in a non
 887         // default charset -- this only works for RichEdit > 1.0
 888         if ( GetRichVersion() > 1 )
 889         {
 890             wxFont font = m_defaultStyle.GetFont();
 891             if ( !font.Ok() )
 892                 font = GetFont();
 893
 894             if ( font.Ok() )
 895             {
 896                wxFontEncoding encoding = font.GetEncoding();
 897                if ( encoding != wxFONTENCODING_SYSTEM )
 898                {
 899                    // we have to use EM_STREAMIN to force richedit control 2.0+
 900                    // to show any text in the non default charset -- otherwise
 901                    // it thinks it knows better than we do and always shows it
 902                    // in the default one
 903                    done = StreamIn(valueDos, encoding, selectionOnly);
 904                }
 905             }
 906         }
 907 #endif // !wxUSE_UNICODE
 908     }
 909
 910     if ( !done )
 911 #endif // wxUSE_RICHEDIT
 912     {
 913         // in some cases we get 2 EN_CHANGE notifications after the SendMessage
 914         // call below which is confusing for the client code and so should be
 915         // avoided
 916         //
 917         // these cases are: (a) plain EDIT controls if EM_REPLACESEL is used
 918         // and there is a non empty selection currently and (b) rich text
 919         // controls in any case
 920         if (
 921 #if wxUSE_RICHEDIT
 922             IsRich() ||
 923 #endif // wxUSE_RICHEDIT
 924             (selectionOnly && HasSelection()) )
 925         {
 926             m_suppressNextUpdate = true;
 927         }
 928
 929         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
 930                       0, (LPARAM)valueDos.c_str());
 931
 932         // OTOH, non rich text controls don't generate any events at all when
 933         // we use WM_SETTEXT -- have to emulate them here
 934         if ( !selectionOnly
 935 #if wxUSE_RICHEDIT
 936                 && !IsRich()
 937 #endif // wxUSE_RICHEDIT
 938            )
 939         {
 940             // Windows already sends an update event for single-line
 941             // controls.
 942             if ( m_windowStyle & wxTE_MULTILINE )
 943                 SendUpdateEvent();
 944         }
 945     }
 946
 947     AdjustSpaceLimit();
 948 }
 949
 950 void wxTextCtrl::AppendText(const wxString& text)
 951 {
 952     SetInsertionPointEnd();
 953
 954     WriteText(text);
 955
 956 #if wxUSE_RICHEDIT
 957     if ( IsMultiLine() && GetRichVersion() > 1 )
 958     {
 959         // setting the caret to the end and showing it simply doesn't work for
 960         // RichEdit 2.0 -- force it to still do what we want
 961         ::SendMessage(GetHwnd(), EM_LINESCROLL, 0, GetNumberOfLines());
 962     }
 963 #endif // wxUSE_RICHEDIT
 964 }
 965
 966 void wxTextCtrl::Clear()
 967 {
 968     ::SetWindowText(GetHwnd(), wxEmptyString);
 969
 970 #if wxUSE_RICHEDIT
 971     if ( !IsRich() )
 972 #endif // wxUSE_RICHEDIT
 973     {
 974         // rich edit controls send EN_UPDATE from WM_SETTEXT handler themselves
 975         // but the normal ones don't -- make Clear() behaviour consistent by
 976         // always sending this event
 977
 978         // Windows already sends an update event for single-line
 979         // controls.
 980         if ( m_windowStyle & wxTE_MULTILINE )
 981             SendUpdateEvent();
 982     }
 983 }
 984
 985 #ifdef __WIN32__
 986
 987 bool wxTextCtrl::EmulateKeyPress(const wxKeyEvent& event)
 988 {
 989     SetFocus();
 990
 991     size_t lenOld = GetValue().length();
 992
 993     wxUint32 code = event.GetRawKeyCode();
 994     ::keybd_event(code, 0, 0 /* key press */, 0);
 995     ::keybd_event(code, 0, KEYEVENTF_KEYUP, 0);
 996
 997     // assume that any alphanumeric key changes the total number of characters
 998     // in the control - this should work in 99% of cases
 999     return GetValue().length() != lenOld;
1000 }
1001
1002 #endif // __WIN32__
1003
1004 // ----------------------------------------------------------------------------
1005 // Clipboard operations
1006 // ----------------------------------------------------------------------------
1007
1008 void wxTextCtrl::Copy()
1009 {
1010     if (CanCopy())
1011     {
1012         ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
1013     }
1014 }
1015
1016 void wxTextCtrl::Cut()
1017 {
1018     if (CanCut())
1019     {
1020         ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
1021     }
1022 }
1023
1024 void wxTextCtrl::Paste()
1025 {
1026     if (CanPaste())
1027     {
1028         ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
1029     }
1030 }
1031
1032 bool wxTextCtrl::HasSelection() const
1033 {
1034     long from, to;
1035     GetSelection(&from, &to);
1036     return from != to;
1037 }
1038
1039 bool wxTextCtrl::CanCopy() const
1040 {
1041     // Can copy if there's a selection
1042     return HasSelection();
1043 }
1044
1045 bool wxTextCtrl::CanCut() const
1046 {
1047     return CanCopy() && IsEditable();
1048 }
1049
1050 bool wxTextCtrl::CanPaste() const
1051 {
1052     if ( !IsEditable() )
1053         return false;
1054
1055 #if wxUSE_RICHEDIT
1056     if ( IsRich() )
1057     {
1058         UINT cf = 0; // 0 == any format
1059
1060         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
1061     }
1062 #endif // wxUSE_RICHEDIT
1063
1064     // Standard edit control: check for straight text on clipboard
1065     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
1066         return false;
1067
1068     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
1069     ::CloseClipboard();
1070
1071     return isTextAvailable;
1072 }
1073
1074 // ----------------------------------------------------------------------------
1075 // Accessors
1076 // ----------------------------------------------------------------------------
1077
1078 void wxTextCtrl::SetEditable(bool editable)
1079 {
1080     HWND hWnd = GetHwnd();
1081     ::SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
1082 }
1083
1084 void wxTextCtrl::SetInsertionPoint(long pos)
1085 {
1086     DoSetSelection(pos, pos);
1087 }
1088
1089 void wxTextCtrl::SetInsertionPointEnd()
1090 {
1091     // we must not do anything if the caret is already there because calling
1092     // SetInsertionPoint() thaws the controls if Freeze() had been called even
1093     // if it doesn't actually move the caret anywhere and so the simple fact of
1094     // doing it results in horrible flicker when appending big amounts of text
1095     // to the control in a few chunks (see DoAddText() test in the text sample)
1096     if ( GetInsertionPoint() == GetLastPosition() )
1097         return;
1098
1099     long pos;
1100
1101 #if wxUSE_RICHEDIT
1102     if ( m_verRichEdit == 1 )
1103     {
1104         // we don't have to waste time calling GetLastPosition() in this case
1105         pos = -1;
1106     }
1107     else // !RichEdit 1.0
1108 #endif // wxUSE_RICHEDIT
1109     {
1110         pos = GetLastPosition();
1111     }
1112
1113     SetInsertionPoint(pos);
1114 }
1115
1116 long wxTextCtrl::GetInsertionPoint() const
1117 {
1118 #if wxUSE_RICHEDIT
1119     if ( IsRich() )
1120     {
1121         CHARRANGE range;
1122         range.cpMin = 0;
1123         range.cpMax = 0;
1124         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
1125         return range.cpMin;
1126     }
1127 #endif // wxUSE_RICHEDIT
1128
1129     DWORD Pos = (DWORD)::SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
1130     return Pos & 0xFFFF;
1131 }
1132
1133 long wxTextCtrl::GetLastPosition() const
1134 {
1135     int numLines = GetNumberOfLines();
1136     long posStartLastLine = XYToPosition(0, numLines - 1);
1137
1138     long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
1139
1140     return posStartLastLine + lenLastLine;
1141 }
1142
1143 // If the return values from and to are the same, there is no
1144 // selection.
1145 void wxTextCtrl::GetSelection(long* from, long* to) const
1146 {
1147 #if wxUSE_RICHEDIT
1148     if ( IsRich() )
1149     {
1150         CHARRANGE charRange;
1151         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
1152
1153         *from = charRange.cpMin;
1154         *to = charRange.cpMax;
1155     }
1156     else
1157 #endif // !wxUSE_RICHEDIT
1158     {
1159         DWORD dwStart, dwEnd;
1160         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
1161
1162         *from = dwStart;
1163         *to = dwEnd;
1164     }
1165 }
1166
1167 bool wxTextCtrl::IsEditable() const
1168 {
1169     // strangely enough, we may be called before the control is created: our
1170     // own Create() calls MSWGetStyle() which calls AcceptsFocus() which calls
1171     // us
1172     if ( !m_hWnd )
1173         return true;
1174
1175     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
1176
1177     return (style & ES_READONLY) == 0;
1178 }
1179
1180 // ----------------------------------------------------------------------------
1181 // selection
1182 // ----------------------------------------------------------------------------
1183
1184 void wxTextCtrl::SetSelection(long from, long to)
1185 {
1186     // if from and to are both -1, it means (in wxWidgets) that all text should
1187     // be selected - translate into Windows convention
1188     if ( (from == -1) && (to == -1) )
1189     {
1190         from = 0;
1191         to = -1;
1192     }
1193
1194     DoSetSelection(from, to);
1195 }
1196
1197 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
1198 {
1199     HWND hWnd = GetHwnd();
1200
1201 #if wxUSE_RICHEDIT
1202     if ( IsRich() )
1203     {
1204         CHARRANGE range;
1205         range.cpMin = from;
1206         range.cpMax = to;
1207         ::SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
1208     }
1209     else
1210 #endif // wxUSE_RICHEDIT
1211     {
1212         ::SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
1213     }
1214
1215     if ( scrollCaret )
1216     {
1217 #if wxUSE_RICHEDIT
1218         // richedit 3.0 (i.e. the version living in riched20.dll distributed
1219         // with Windows 2000 and beyond) doesn't honour EM_SCROLLCARET when
1220         // emulating richedit 2.0 unless the control has focus or ECO_NOHIDESEL
1221         // option is set (but it does work ok in richedit 1.0 mode...)
1222         //
1223         // so to make it work we either need to give focus to it here which
1224         // will probably create many problems (dummy focus events; window
1225         // containing the text control being brought to foreground
1226         // unexpectedly; ...) or to temporarily set ECO_NOHIDESEL which may
1227         // create other problems too -- and in fact it does because if we turn
1228         // on/off this style while appending the text to the control, the
1229         // vertical scrollbar never appears in it even if we append tons of
1230         // text and to work around this the only solution I found was to use
1231         // ES_DISABLENOSCROLL
1232         //
1233         // this is very ugly but I don't see any other way to make this work
1234         if ( GetRichVersion() > 1 )
1235         {
1236             if ( !HasFlag(wxTE_NOHIDESEL) )
1237             {
1238                 ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1239                               ECOOP_OR, ECO_NOHIDESEL);
1240             }
1241             //else: everything is already ok
1242         }
1243 #endif // wxUSE_RICHEDIT
1244
1245         ::SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
1246
1247 #if wxUSE_RICHEDIT
1248         // restore ECO_NOHIDESEL if we changed it
1249         if ( GetRichVersion() > 1 && !HasFlag(wxTE_NOHIDESEL) )
1250         {
1251             ::SendMessage(GetHwnd(), EM_SETOPTIONS,
1252                           ECOOP_AND, ~ECO_NOHIDESEL);
1253         }
1254 #endif // wxUSE_RICHEDIT
1255     }
1256 }
1257
1258 // ----------------------------------------------------------------------------
1259 // Working with files
1260 // ----------------------------------------------------------------------------
1261
1262 bool wxTextCtrl::LoadFile(const wxString& file)
1263 {
1264     if ( wxTextCtrlBase::LoadFile(file) )
1265     {
1266         // update the size limit if needed
1267         AdjustSpaceLimit();
1268
1269         return true;
1270     }
1271
1272     return false;
1273 }
1274
1275 // ----------------------------------------------------------------------------
1276 // Editing
1277 // ----------------------------------------------------------------------------
1278
1279 void wxTextCtrl::Replace(long from, long to, const wxString& value)
1280 {
1281     // Set selection and remove it
1282     DoSetSelection(from, to, false /* don't scroll caret into view */);
1283
1284     DoWriteText(value, true /* selection only */);
1285 }
1286
1287 void wxTextCtrl::Remove(long from, long to)
1288 {
1289     Replace(from, to, wxEmptyString);
1290 }
1291
1292 bool wxTextCtrl::IsModified() const
1293 {
1294     return ::SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
1295 }
1296
1297 void wxTextCtrl::MarkDirty()
1298 {
1299     ::SendMessage(GetHwnd(), EM_SETMODIFY, TRUE, 0L);
1300 }
1301
1302 void wxTextCtrl::DiscardEdits()
1303 {
1304     ::SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
1305 }
1306
1307 int wxTextCtrl::GetNumberOfLines() const
1308 {
1309     return (int)::SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
1310 }
1311
1312 // ----------------------------------------------------------------------------
1313 // Positions <-> coords
1314 // ----------------------------------------------------------------------------
1315
1316 long wxTextCtrl::XYToPosition(long x, long y) const
1317 {
1318     // This gets the char index for the _beginning_ of this line
1319     long charIndex = ::SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
1320
1321     return charIndex + x;
1322 }
1323
1324 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
1325 {
1326     HWND hWnd = GetHwnd();
1327
1328     // This gets the line number containing the character
1329     long lineNo;
1330 #if wxUSE_RICHEDIT
1331     if ( IsRich() )
1332     {
1333         lineNo = ::SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
1334     }
1335     else
1336 #endif // wxUSE_RICHEDIT
1337     {
1338         lineNo = ::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
1339     }
1340
1341     if ( lineNo == -1 )
1342     {
1343         // no such line
1344         return false;
1345     }
1346
1347     // This gets the char index for the _beginning_ of this line
1348     long charIndex = ::SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
1349     if ( charIndex == -1 )
1350     {
1351         return false;
1352     }
1353
1354     // The X position must therefore be the different between pos and charIndex
1355     if ( x )
1356         *x = pos - charIndex;
1357     if ( y )
1358         *y = lineNo;
1359
1360     return true;
1361 }
1362
1363 wxTextCtrlHitTestResult
1364 wxTextCtrl::HitTest(const wxPoint& pt, long *posOut) const
1365 {
1366     // first get the position from Windows
1367     LPARAM lParam;
1368
1369 #if wxUSE_RICHEDIT
1370     POINTL ptl;
1371     if ( IsRich() )
1372     {
1373         // for rich edit controls the position is passed iva the struct fields
1374         ptl.x = pt.x;
1375         ptl.y = pt.y;
1376         lParam = (LPARAM)&ptl;
1377     }
1378     else
1379 #endif // wxUSE_RICHEDIT
1380     {
1381         // for the plain ones, we are limited to 16 bit positions which are
1382         // combined in a single 32 bit value
1383         lParam = MAKELPARAM(pt.x, pt.y);
1384     }
1385
1386     LRESULT pos = ::SendMessage(GetHwnd(), EM_CHARFROMPOS, 0, lParam);
1387
1388     if ( pos == -1 )
1389     {
1390         // this seems to indicate an error...
1391         return wxTE_HT_UNKNOWN;
1392     }
1393
1394 #if wxUSE_RICHEDIT
1395     if ( !IsRich() )
1396 #endif // wxUSE_RICHEDIT
1397     {
1398         // for plain EDIT controls the higher word contains something else
1399         pos = LOWORD(pos);
1400     }
1401
1402
1403     // next determine where it is relatively to our point: EM_CHARFROMPOS
1404     // always returns the closest character but we need to be more precise, so
1405     // double check that we really are where it pretends
1406     POINTL ptReal;
1407
1408 #if wxUSE_RICHEDIT
1409     // FIXME: we need to distinguish between richedit 2 and 3 here somehow but
1410     //        we don't know how to do it
1411     if ( IsRich() )
1412     {
1413         ::SendMessage(GetHwnd(), EM_POSFROMCHAR, (WPARAM)&ptReal, pos);
1414     }
1415     else
1416 #endif // wxUSE_RICHEDIT
1417     {
1418         LRESULT lRc = ::SendMessage(GetHwnd(), EM_POSFROMCHAR, pos, 0);
1419
1420         if ( lRc == -1 )
1421         {
1422             // this is apparently returned when pos corresponds to the last
1423             // position
1424             ptReal.x =
1425             ptReal.y = 0;
1426         }
1427         else
1428         {
1429             ptReal.x = LOWORD(lRc);
1430             ptReal.y = HIWORD(lRc);
1431         }
1432     }
1433
1434     wxTextCtrlHitTestResult rc;
1435
1436     if ( pt.y > ptReal.y + GetCharHeight() )
1437         rc = wxTE_HT_BELOW;
1438     else if ( pt.x > ptReal.x + GetCharWidth() )
1439         rc = wxTE_HT_BEYOND;
1440     else
1441         rc = wxTE_HT_ON_TEXT;
1442
1443     if ( posOut )
1444         *posOut = pos;
1445
1446     return rc;
1447 }
1448
1449 // ----------------------------------------------------------------------------
1450 //
1451 // ----------------------------------------------------------------------------
1452
1453 void wxTextCtrl::ShowPosition(long pos)
1454 {
1455     HWND hWnd = GetHwnd();
1456
1457     // To scroll to a position, we pass the number of lines and characters
1458     // to scroll *by*. This means that we need to:
1459     // (1) Find the line position of the current line.
1460     // (2) Find the line position of pos.
1461     // (3) Scroll by (pos - current).
1462     // For now, ignore the horizontal scrolling.
1463
1464     // Is this where scrolling is relative to - the line containing the caret?
1465     // Or is the first visible line??? Try first visible line.
1466 //    int currentLineLineNo1 = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1467
1468     int currentLineLineNo = (int)::SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1469
1470     int specifiedLineLineNo = (int)::SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1471
1472     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1473
1474     if (linesToScroll != 0)
1475       (void)::SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1476 }
1477
1478 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1479 {
1480     return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1481 }
1482
1483 int wxTextCtrl::GetLineLength(long lineNo) const
1484 {
1485     long pos = XYToPosition(0, lineNo);
1486
1487     return GetLengthOfLineContainingPos(pos);
1488 }
1489
1490 wxString wxTextCtrl::GetLineText(long lineNo) const
1491 {
1492     size_t len = (size_t)GetLineLength(lineNo) + 1;
1493
1494     // there must be at least enough place for the length WORD in the
1495     // buffer
1496     len += sizeof(WORD);
1497
1498     wxString str;
1499     {
1500         wxStringBufferLength tmp(str, len);
1501         wxChar *buf = tmp;
1502
1503         *(WORD *)buf = (WORD)len;
1504         len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1505
1506 #if wxUSE_RICHEDIT
1507         if ( IsRich() )
1508         {
1509             // remove the '\r' returned by the rich edit control, the user code
1510             // should never see it
1511             if ( buf[len - 2] == _T('\r') && buf[len - 1] == _T('\n') )
1512             {
1513                 buf[len - 2] = _T('\n');
1514                 len--;
1515             }
1516         }
1517 #endif // wxUSE_RICHEDIT
1518
1519         // remove the '\n' at the end, if any (this is how this function is
1520         // supposed to work according to the docs)
1521         if ( buf[len - 1] == _T('\n') )
1522         {
1523             len--;
1524         }
1525
1526         buf[len] = 0;
1527         tmp.SetLength(len);
1528     }
1529
1530     return str;
1531 }
1532
1533 void wxTextCtrl::SetMaxLength(unsigned long len)
1534 {
1535 #if wxUSE_RICHEDIT
1536     if (IsRich())
1537         ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, (LPARAM) (DWORD) len);
1538     else
1539 #endif
1540     ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1541 }
1542
1543 // ----------------------------------------------------------------------------
1544 // Undo/redo
1545 // ----------------------------------------------------------------------------
1546
1547 void wxTextCtrl::Undo()
1548 {
1549     if (CanUndo())
1550     {
1551         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1552     }
1553 }
1554
1555 void wxTextCtrl::Redo()
1556 {
1557     if (CanRedo())
1558     {
1559 #if wxUSE_RICHEDIT
1560         if (GetRichVersion() > 1)
1561             ::SendMessage(GetHwnd(), EM_REDO, 0, 0);
1562         else
1563 #endif
1564         // Same as Undo, since Undo undoes the undo, i.e. a redo.
1565         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1566     }
1567 }
1568
1569 bool wxTextCtrl::CanUndo() const
1570 {
1571     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1572 }
1573
1574 bool wxTextCtrl::CanRedo() const
1575 {
1576 #if wxUSE_RICHEDIT
1577     if (GetRichVersion() > 1)
1578         return ::SendMessage(GetHwnd(), EM_CANREDO, 0, 0) != 0;
1579     else
1580 #endif
1581     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1582 }
1583
1584 // ----------------------------------------------------------------------------
1585 // caret handling (Windows only)
1586 // ----------------------------------------------------------------------------
1587
1588 bool wxTextCtrl::ShowNativeCaret(bool show)
1589 {
1590     if ( show != m_isNativeCaretShown )
1591     {
1592         if ( !(show ? ::ShowCaret(GetHwnd()) : ::HideCaret(GetHwnd())) )
1593         {
1594             // not an error, may simply indicate that it's not shown/hidden
1595             // yet (i.e. it had been hidden/showh 2 times before)
1596             return false;
1597         }
1598
1599         m_isNativeCaretShown = show;
1600     }
1601
1602     return true;
1603 }
1604
1605 // ----------------------------------------------------------------------------
1606 // implemenation details
1607 // ----------------------------------------------------------------------------
1608
1609 void wxTextCtrl::Command(wxCommandEvent & event)
1610 {
1611     SetValue(event.GetString());
1612     ProcessCommand (event);
1613 }
1614
1615 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1616 {
1617     // By default, load the first file into the text window.
1618     if (event.GetNumberOfFiles() > 0)
1619     {
1620         LoadFile(event.GetFiles()[0]);
1621     }
1622 }
1623
1624 // ----------------------------------------------------------------------------
1625 // kbd input processing
1626 // ----------------------------------------------------------------------------
1627
1628 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1629 {
1630     MSG *msg = (MSG *)pMsg;
1631
1632     // check for our special keys here: if we don't do it and the parent frame
1633     // uses them as accelerators, they wouldn't work at all, so we disable
1634     // usual preprocessing for them
1635     if ( msg->message == WM_KEYDOWN )
1636     {
1637         WORD vkey = (WORD) msg->wParam;
1638         if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1639         {
1640             if ( vkey == VK_BACK )
1641                 return false;
1642         }
1643         else // no Alt
1644         {
1645             // we want to process some Ctrl-foo and Shift-bar but no key
1646             // combinations without either Ctrl or Shift nor with both of them
1647             // pressed
1648             const int ctrl = wxIsCtrlDown(),
1649                       shift = wxIsShiftDown();
1650             switch ( ctrl + shift )
1651             {
1652                 default:
1653                     wxFAIL_MSG( _T("how many modifiers have we got?") );
1654                     // fall through
1655
1656                 case 0:
1657                 case 2:
1658                     break;
1659
1660                 case 1:
1661                     // either Ctrl or Shift pressed
1662                     if ( ctrl )
1663                     {
1664                         switch ( vkey )
1665                         {
1666                             case 'C':
1667                             case 'V':
1668                             case 'X':
1669                             case VK_INSERT:
1670                             case VK_DELETE:
1671                             case VK_HOME:
1672                             case VK_END:
1673                                 return false;
1674                         }
1675                     }
1676                     else // Shift is pressed
1677                     {
1678                         if ( vkey == VK_INSERT || vkey == VK_DELETE )
1679                             return false;
1680                     }
1681             }
1682         }
1683     }
1684
1685     return wxControl::MSWShouldPreProcessMessage(pMsg);
1686 }
1687
1688 void wxTextCtrl::OnChar(wxKeyEvent& event)
1689 {
1690     switch ( event.GetKeyCode() )
1691     {
1692         case WXK_RETURN:
1693             if ( !HasFlag(wxTE_MULTILINE) )
1694             {
1695                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1696                 InitCommandEvent(event);
1697                 event.SetString(GetValue());
1698                 if ( GetEventHandler()->ProcessEvent(event) )
1699                     return;
1700             }
1701             //else: multiline controls need Enter for themselves
1702
1703             break;
1704
1705         case WXK_TAB:
1706             // ok, so this is getting absolutely ridiculous but I don't see
1707             // any other way to fix this bug: when a multiline text control is
1708             // inside a wxFrame, we need to generate the navigation event as
1709             // otherwise nothing happens at all, but when the same control is
1710             // created inside a dialog, IsDialogMessage() *does* switch focus
1711             // all by itself and so if we do it here as well, it is advanced
1712             // twice and goes to the next control... to prevent this from
1713             // happening we're doing this ugly check, the logic being that if
1714             // we don't have focus then it had been already changed to the next
1715             // control
1716             //
1717             // the right thing to do would, of course, be to understand what
1718             // the hell is IsDialogMessage() doing but this is beyond my feeble
1719             // forces at the moment unfortunately
1720             if ( !(m_windowStyle & wxTE_PROCESS_TAB))
1721             {
1722                 if ( FindFocus() == this )
1723                 {
1724                     int flags = 0;
1725                     if (!event.ShiftDown())
1726                         flags |= wxNavigationKeyEvent::IsForward ;
1727                     if (event.ControlDown())
1728                         flags |= wxNavigationKeyEvent::WinChange ;
1729                     if (Navigate(flags))
1730                         return;
1731                 }
1732             }
1733             else
1734             {
1735                 // Insert tab since calling the default Windows handler
1736                 // doesn't seem to do it
1737                 WriteText(wxT("\t"));
1738             }
1739             break;
1740     }
1741
1742     // no, we didn't process it
1743     event.Skip();
1744 }
1745
1746 WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1747 {
1748     WXLRESULT lRc = wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1749
1750     if ( nMsg == WM_GETDLGCODE )
1751     {
1752         // we always want the chars and the arrows: the arrows for navigation
1753         // and the chars because we want Ctrl-C to work even in a read only
1754         // control
1755         long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1756
1757         if ( IsEditable() )
1758         {
1759             // we may have several different cases:
1760             // 1. normal case: both TAB and ENTER are used for dlg navigation
1761             // 2. ctrl which wants TAB for itself: ENTER is used to pass to the
1762             //    next control in the dialog
1763             // 3. ctrl which wants ENTER for itself: TAB is used for dialog
1764             //    navigation
1765             // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to go
1766             //    to the next control
1767
1768             // the multiline edit control should always get <Return> for itself
1769             if ( HasFlag(wxTE_PROCESS_ENTER) || HasFlag(wxTE_MULTILINE) )
1770                 lDlgCode |= DLGC_WANTMESSAGE;
1771
1772             if ( HasFlag(wxTE_PROCESS_TAB) )
1773                 lDlgCode |= DLGC_WANTTAB;
1774
1775             lRc |= lDlgCode;
1776         }
1777         else // !editable
1778         {
1779             // NB: use "=", not "|=" as the base class version returns the
1780             //     same flags is this state as usual (i.e. including
1781             //     DLGC_WANTMESSAGE). This is strange (how does it work in the
1782             //     native Win32 apps?) but for now live with it.
1783             lRc = lDlgCode;
1784         }
1785     }
1786
1787     return lRc;
1788 }
1789
1790 // ----------------------------------------------------------------------------
1791 // text control event processing
1792 // ----------------------------------------------------------------------------
1793
1794 bool wxTextCtrl::SendUpdateEvent()
1795 {
1796     // is event reporting suspended?
1797     if ( m_suppressNextUpdate )
1798     {
1799         // do process the next one
1800         m_suppressNextUpdate = false;
1801
1802         return false;
1803     }
1804
1805     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
1806     InitCommandEvent(event);
1807     event.SetString(GetValue());
1808
1809     return ProcessCommand(event);
1810 }
1811
1812 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1813 {
1814     switch ( param )
1815     {
1816         case EN_SETFOCUS:
1817         case EN_KILLFOCUS:
1818             {
1819                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1820                                                          : wxEVT_SET_FOCUS,
1821                                    m_windowId);
1822                 event.SetEventObject(this);
1823                 GetEventHandler()->ProcessEvent(event);
1824             }
1825             break;
1826
1827         case EN_CHANGE:
1828             SendUpdateEvent();
1829             break;
1830
1831         case EN_MAXTEXT:
1832             // the text size limit has been hit -- try to increase it
1833             if ( !AdjustSpaceLimit() )
1834             {
1835                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1836                 InitCommandEvent(event);
1837                 event.SetString(GetValue());
1838                 ProcessCommand(event);
1839             }
1840             break;
1841
1842             // the other edit notification messages are not processed
1843         default:
1844             return false;
1845     }
1846
1847     // processed
1848     return true;
1849 }
1850
1851 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1852 #if wxUSE_CTL3D
1853                                WXUINT message,
1854                                WXWPARAM wParam,
1855                                WXLPARAM lParam
1856 #else
1857                                WXUINT WXUNUSED(message),
1858                                WXWPARAM WXUNUSED(wParam),
1859                                WXLPARAM WXUNUSED(lParam)
1860 #endif
1861     )
1862 {
1863 #if wxUSE_CTL3D
1864     if ( m_useCtl3D )
1865     {
1866         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1867         return (WXHBRUSH) hbrush;
1868     }
1869 #endif // wxUSE_CTL3D
1870
1871     HDC hdc = (HDC)pDC;
1872     wxColour colBack = GetBackgroundColour();
1873
1874     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1875         colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1876
1877     ::SetBkColor(hdc, wxColourToRGB(colBack));
1878     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1879
1880     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1881
1882     return (WXHBRUSH)brush->GetResourceHandle();
1883 }
1884
1885 bool wxTextCtrl::AdjustSpaceLimit()
1886 {
1887     unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1888
1889     // HACK: we try to automatically extend the limit for the amount of text
1890     //       to allow (interactively) entering more than 64Kb of text under
1891     //       Win9x but we shouldn't reset the text limit which was previously
1892     //       set explicitly with SetMaxLength()
1893     //
1894     //       we could solve this by storing the limit we set in wxTextCtrl but
1895     //       to save space we prefer to simply test here the actual limit
1896     //       value: we consider that SetMaxLength() can only be called for
1897     //       values < 32Kb
1898     if ( limit < 0x8000 )
1899     {
1900         // we've got more text than limit set by SetMaxLength()
1901         return false;
1902     }
1903
1904     unsigned int len = ::GetWindowTextLength(GetHwnd());
1905     if ( len >= limit )
1906     {
1907         limit = len + 0x8000;    // 32Kb
1908
1909 #if wxUSE_RICHEDIT
1910         if ( IsRich() )
1911         {
1912             // as a nice side effect, this also allows passing limit > 64Kb
1913             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1914         }
1915         else
1916 #endif // wxUSE_RICHEDIT
1917         {
1918             if ( limit > 0xffff )
1919             {
1920                 // this will set it to a platform-dependent maximum (much more
1921                 // than 64Kb under NT)
1922                 limit = 0;
1923             }
1924
1925             ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1926         }
1927     }
1928
1929     // we changed the limit
1930     return true;
1931 }
1932
1933 bool wxTextCtrl::AcceptsFocus() const
1934 {
1935     // we don't want focus if we can't be edited unless we're a multiline
1936     // control because then it might be still nice to get focus from keyboard
1937     // to be able to scroll it without mouse
1938     return (IsEditable() || IsMultiLine()) && wxControl::AcceptsFocus();
1939 }
1940
1941 wxSize wxTextCtrl::DoGetBestSize() const
1942 {
1943     int cx, cy;
1944     wxGetCharSize(GetHWND(), &cx, &cy, GetFont());
1945
1946     int wText = DEFAULT_ITEM_WIDTH;
1947
1948     int hText = cy;
1949     if ( m_windowStyle & wxTE_MULTILINE )
1950     {
1951         hText *= wxMax(GetNumberOfLines(), 5);
1952     }
1953     //else: for single line control everything is ok
1954
1955     // we have to add the adjustments for the control height only once, not
1956     // once per line, so do it after multiplication above
1957     hText += EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy) - cy;
1958
1959     return wxSize(wText, hText);
1960 }
1961
1962 // ----------------------------------------------------------------------------
1963 // standard handlers for standard edit menu events
1964 // ----------------------------------------------------------------------------
1965
1966 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1967 {
1968     Cut();
1969 }
1970
1971 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1972 {
1973     Copy();
1974 }
1975
1976 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1977 {
1978     Paste();
1979 }
1980
1981 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1982 {
1983     Undo();
1984 }
1985
1986 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1987 {
1988     Redo();
1989 }
1990
1991 void wxTextCtrl::OnDelete(wxCommandEvent& WXUNUSED(event))
1992 {
1993     long from, to;
1994     GetSelection(& from, & to);
1995     if (from != -1 && to != -1)
1996         Remove(from, to);
1997 }
1998
1999 void wxTextCtrl::OnSelectAll(wxCommandEvent& WXUNUSED(event))
2000 {
2001     SetSelection(-1, -1);
2002 }
2003
2004 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
2005 {
2006     event.Enable( CanCut() );
2007 }
2008
2009 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
2010 {
2011     event.Enable( CanCopy() );
2012 }
2013
2014 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
2015 {
2016     event.Enable( CanPaste() );
2017 }
2018
2019 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
2020 {
2021     event.Enable( CanUndo() );
2022 }
2023
2024 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
2025 {
2026     event.Enable( CanRedo() );
2027 }
2028
2029 void wxTextCtrl::OnUpdateDelete(wxUpdateUIEvent& event)
2030 {
2031     long from, to;
2032     GetSelection(& from, & to);
2033     event.Enable(from != -1 && to != -1 && from != to && IsEditable()) ;
2034 }
2035
2036 void wxTextCtrl::OnUpdateSelectAll(wxUpdateUIEvent& event)
2037 {
2038     event.Enable(GetLastPosition() > 0);
2039 }
2040
2041 void wxTextCtrl::OnRightClick(wxMouseEvent& event)
2042 {
2043 #if wxUSE_RICHEDIT
2044     if (IsRich())
2045     {
2046         if (!m_privateContextMenu)
2047         {
2048             m_privateContextMenu = new wxMenu;
2049             m_privateContextMenu->Append(wxID_UNDO, _("&Undo"));
2050             m_privateContextMenu->Append(wxID_REDO, _("&Redo"));
2051             m_privateContextMenu->AppendSeparator();
2052             m_privateContextMenu->Append(wxID_CUT, _("Cu&t"));
2053             m_privateContextMenu->Append(wxID_COPY, _("&Copy"));
2054             m_privateContextMenu->Append(wxID_PASTE, _("&Paste"));
2055             m_privateContextMenu->Append(wxID_CLEAR, _("&Delete"));
2056             m_privateContextMenu->AppendSeparator();
2057             m_privateContextMenu->Append(wxID_SELECTALL, _("Select &All"));
2058         }
2059         PopupMenu(m_privateContextMenu, event.GetPosition());
2060         return;
2061     }
2062     else
2063 #endif
2064     event.Skip();
2065 }
2066
2067 void wxTextCtrl::OnSetFocus(wxFocusEvent& WXUNUSED(event))
2068 {
2069     // be sure the caret remains invisible if the user had hidden it
2070     if ( !m_isNativeCaretShown )
2071     {
2072         ::HideCaret(GetHwnd());
2073     }
2074 }
2075
2076 // the rest of the file only deals with the rich edit controls
2077 #if wxUSE_RICHEDIT
2078
2079 // ----------------------------------------------------------------------------
2080 // EN_LINK processing
2081 // ----------------------------------------------------------------------------
2082
2083 bool wxTextCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
2084 {
2085     NMHDR *hdr = (NMHDR* )lParam;
2086     switch ( hdr->code )
2087     {
2088        case EN_MSGFILTER:
2089             {
2090                 const MSGFILTER *msgf = (MSGFILTER *)lParam;
2091                 UINT msg = msgf->msg;
2092
2093                 // this is a bit crazy but richedit 1.0 sends us all mouse
2094                 // events _except_ WM_LBUTTONUP (don't ask me why) so we have
2095                 // generate the wxWin events for this message manually
2096                 //
2097                 // NB: in fact, this is still not totally correct as it does
2098                 //     send us WM_LBUTTONUP if the selection was cleared by the
2099                 //     last click -- so currently we get 2 events in this case,
2100                 //     but as I don't see any obvious way to check for this I
2101                 //     leave this code in place because it's still better than
2102                 //     not getting left up events at all
2103                 if ( msg == WM_LBUTTONUP )
2104                 {
2105                     WXUINT flags = msgf->wParam;
2106                     int x = GET_X_LPARAM(msgf->lParam),
2107                         y = GET_Y_LPARAM(msgf->lParam);
2108
2109                     HandleMouseEvent(msg, x, y, flags);
2110                 }
2111             }
2112
2113             // return true to process the event (and false to ignore it)
2114             return true;
2115
2116         case EN_LINK:
2117             {
2118                 const ENLINK *enlink = (ENLINK *)hdr;
2119
2120                 switch ( enlink->msg )
2121                 {
2122                     case WM_SETCURSOR:
2123                         // ok, so it is hardcoded - do we really nee to
2124                         // customize it?
2125                         ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
2126                         *result = TRUE;
2127                         break;
2128
2129                     case WM_MOUSEMOVE:
2130                     case WM_LBUTTONDOWN:
2131                     case WM_LBUTTONUP:
2132                     case WM_LBUTTONDBLCLK:
2133                     case WM_RBUTTONDOWN:
2134                     case WM_RBUTTONUP:
2135                     case WM_RBUTTONDBLCLK:
2136                         // send a mouse event
2137                         {
2138                             static const wxEventType eventsMouse[] =
2139                             {
2140                                 wxEVT_MOTION,
2141                                 wxEVT_LEFT_DOWN,
2142                                 wxEVT_LEFT_UP,
2143                                 wxEVT_LEFT_DCLICK,
2144                                 wxEVT_RIGHT_DOWN,
2145                                 wxEVT_RIGHT_UP,
2146                                 wxEVT_RIGHT_DCLICK,
2147                             };
2148
2149                             // the event ids are consecutive
2150                             wxMouseEvent
2151                                 evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
2152
2153                             InitMouseEvent(evtMouse,
2154                                            GET_X_LPARAM(enlink->lParam),
2155                                            GET_Y_LPARAM(enlink->lParam),
2156                                            enlink->wParam);
2157
2158                             wxTextUrlEvent event(m_windowId, evtMouse,
2159                                                  enlink->chrg.cpMin,
2160                                                  enlink->chrg.cpMax);
2161
2162                             InitCommandEvent(event);
2163
2164                             *result = ProcessCommand(event);
2165                         }
2166                         break;
2167                 }
2168             }
2169             return true;
2170     }
2171
2172     // not processed, leave it to the base class
2173     return wxTextCtrlBase::MSWOnNotify(idCtrl, lParam, result);
2174 }
2175
2176 // ----------------------------------------------------------------------------
2177 // colour setting for the rich edit controls
2178 // ----------------------------------------------------------------------------
2179
2180 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
2181 {
2182     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
2183     {
2184         // colour didn't really change
2185         return false;
2186     }
2187
2188     if ( IsRich() )
2189     {
2190         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
2191         // EM_SETBKGNDCOLOR additionally
2192         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
2193     }
2194
2195     return true;
2196 }
2197
2198 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
2199 {
2200     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
2201     {
2202         // colour didn't really change
2203         return false;
2204     }
2205
2206     if ( IsRich() )
2207     {
2208         // change the colour of everything
2209         CHARFORMAT cf;
2210         wxZeroMemory(cf);
2211         cf.cbSize = sizeof(cf);
2212         cf.dwMask = CFM_COLOR;
2213         cf.crTextColor = wxColourToRGB(colour);
2214         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
2215     }
2216
2217     return true;
2218 }
2219
2220 // ----------------------------------------------------------------------------
2221 // styling support for rich edit controls
2222 // ----------------------------------------------------------------------------
2223
2224 #if wxUSE_RICHEDIT
2225
2226 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
2227 {
2228     if ( !IsRich() )
2229     {
2230         // can't do it with normal text control
2231         return false;
2232     }
2233
2234     // the richedit 1.0 doesn't handle setting background colour, so don't
2235     // even try to do anything if it's the only thing we want to change
2236     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() &&
2237         !style.HasLeftIndent() && !style.HasRightIndent() && !style.HasAlignment() &&
2238         !style.HasTabs() )
2239     {
2240         // nothing to do: return true if there was really nothing to do and
2241         // false if we failed to set bg colour
2242         return !style.HasBackgroundColour();
2243     }
2244
2245     // order the range if needed
2246     if ( start > end )
2247     {
2248         long tmp = start;
2249         start = end;
2250         end = tmp;
2251     }
2252
2253     // we can only change the format of the selection, so select the range we
2254     // want and restore the old selection later
2255     long startOld, endOld;
2256     GetSelection(&startOld, &endOld);
2257
2258     // but do we really have to change the selection?
2259     bool changeSel = start != startOld || end != endOld;
2260
2261     if ( changeSel )
2262     {
2263         DoSetSelection(start, end, false /* don't scroll caret into view */);
2264     }
2265
2266     // initialize CHARFORMAT struct
2267 #if wxUSE_RICHEDIT2
2268     CHARFORMAT2 cf;
2269 #else
2270     CHARFORMAT cf;
2271 #endif
2272
2273     wxZeroMemory(cf);
2274
2275     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2276     // CHARFORMAT in that case
2277 #if wxUSE_RICHEDIT2
2278     if ( m_verRichEdit == 1 )
2279     {
2280         // this is the only thing the control is going to grok
2281         cf.cbSize = sizeof(CHARFORMAT);
2282     }
2283     else
2284 #endif
2285     {
2286         // CHARFORMAT or CHARFORMAT2
2287         cf.cbSize = sizeof(cf);
2288     }
2289
2290     if ( style.HasFont() )
2291     {
2292         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
2293         //     but using it doesn't seem to hurt neither so leaving it for now
2294
2295         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
2296                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
2297
2298         // fill in data from LOGFONT but recalculate lfHeight because we need
2299         // the real height in twips and not the negative number which
2300         // wxFillLogFont() returns (this is correct in general and works with
2301         // the Windows font mapper, but not here)
2302         LOGFONT lf;
2303         wxFillLogFont(&lf, &style.GetFont());
2304         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
2305         cf.bCharSet = lf.lfCharSet;
2306         cf.bPitchAndFamily = lf.lfPitchAndFamily;
2307         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
2308
2309         // also deal with underline/italic/bold attributes: note that we must
2310         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
2311         // style to allow clearing it
2312         if ( lf.lfItalic )
2313         {
2314             cf.dwEffects |= CFE_ITALIC;
2315         }
2316
2317         if ( lf.lfWeight == FW_BOLD )
2318         {
2319             cf.dwEffects |= CFE_BOLD;
2320         }
2321
2322         if ( lf.lfUnderline )
2323         {
2324             cf.dwEffects |= CFE_UNDERLINE;
2325         }
2326
2327         // strikeout fonts are not supported by wxWidgets
2328     }
2329
2330     if ( style.HasTextColour() )
2331     {
2332         cf.dwMask |= CFM_COLOR;
2333         cf.crTextColor = wxColourToRGB(style.GetTextColour());
2334     }
2335
2336 #if wxUSE_RICHEDIT2
2337     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
2338     {
2339         cf.dwMask |= CFM_BACKCOLOR;
2340         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
2341     }
2342 #endif // wxUSE_RICHEDIT2
2343
2344     // do format the selection
2345     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
2346                             SCF_SELECTION, (LPARAM)&cf) != 0;
2347     if ( !ok )
2348     {
2349         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
2350     }
2351
2352     // now do the paragraph formatting
2353     PARAFORMAT2 pf;
2354     wxZeroMemory(pf);
2355     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2356     // PARAFORMAT in that case
2357 #if wxUSE_RICHEDIT2
2358     if ( m_verRichEdit == 1 )
2359     {
2360         // this is the only thing the control is going to grok
2361         pf.cbSize = sizeof(PARAFORMAT);
2362     }
2363     else
2364 #endif
2365     {
2366         // PARAFORMAT or PARAFORMAT2
2367         pf.cbSize = sizeof(pf);
2368     }
2369
2370     if (style.HasAlignment())
2371     {
2372         pf.dwMask |= PFM_ALIGNMENT;
2373         if (style.GetAlignment() == wxTEXT_ALIGNMENT_RIGHT)
2374             pf.wAlignment = PFA_RIGHT;
2375         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
2376             pf.wAlignment = PFA_CENTER;
2377         else if (style.GetAlignment() == wxTEXT_ALIGNMENT_JUSTIFIED)
2378             pf.wAlignment = PFA_JUSTIFY;
2379         else
2380             pf.wAlignment = PFA_LEFT;
2381     }
2382
2383     if (style.HasLeftIndent())
2384     {
2385         pf.dwMask |= PFM_STARTINDENT | PFM_OFFSET;
2386
2387         // Convert from 1/10 mm to TWIPS
2388         pf.dxStartIndent = (int) (((double) style.GetLeftIndent()) * mm2twips / 10.0) ;
2389         pf.dxOffset = (int) (((double) style.GetLeftSubIndent()) * mm2twips / 10.0) ;
2390     }
2391
2392     if (style.HasRightIndent())
2393     {
2394         pf.dwMask |= PFM_RIGHTINDENT;
2395
2396         // Convert from 1/10 mm to TWIPS
2397         pf.dxRightIndent = (int) (((double) style.GetRightIndent()) * mm2twips / 10.0) ;
2398     }
2399
2400     if (style.HasTabs())
2401     {
2402         pf.dwMask |= PFM_TABSTOPS;
2403
2404         const wxArrayInt& tabs = style.GetTabs();
2405
2406         pf.cTabCount = wxMin(tabs.GetCount(), MAX_TAB_STOPS);
2407         size_t i;
2408         for (i = 0; i < (size_t) pf.cTabCount; i++)
2409         {
2410             // Convert from 1/10 mm to TWIPS
2411             pf.rgxTabs[i] = (int) (((double) tabs[i]) * mm2twips / 10.0) ;
2412         }
2413     }
2414
2415     if (pf.dwMask != 0)
2416     {
2417         // do format the selection
2418         bool ok = ::SendMessage(GetHwnd(), EM_SETPARAFORMAT,
2419             0, (LPARAM) &pf) != 0;
2420         if ( !ok )
2421         {
2422             wxLogDebug(_T("SendMessage(EM_SETPARAFORMAT, 0) failed"));
2423         }
2424     }
2425
2426     if ( changeSel )
2427     {
2428         // restore the original selection
2429         DoSetSelection(startOld, endOld, false);
2430     }
2431
2432     return ok;
2433 }
2434
2435 bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
2436 {
2437     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
2438         return false;
2439
2440     // we have to do this or the style wouldn't apply for the text typed by the
2441     // user
2442     long posLast = GetLastPosition();
2443     SetStyle(posLast, posLast, m_defaultStyle);
2444
2445     return true;
2446 }
2447
2448 bool wxTextCtrl::GetStyle(long position, wxTextAttr& style)
2449 {
2450     if ( !IsRich() )
2451     {
2452         // can't do it with normal text control
2453         return false;
2454     }
2455
2456     // initialize CHARFORMAT struct
2457 #if wxUSE_RICHEDIT2
2458     CHARFORMAT2 cf;
2459 #else
2460     CHARFORMAT cf;
2461 #endif
2462
2463     wxZeroMemory(cf);
2464
2465     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
2466     // CHARFORMAT in that case
2467 #if wxUSE_RICHEDIT2
2468     if ( m_verRichEdit == 1 )
2469     {
2470         // this is the only thing the control is going to grok
2471         cf.cbSize = sizeof(CHARFORMAT);
2472     }
2473     else
2474 #endif
2475     {
2476         // CHARFORMAT or CHARFORMAT2
2477         cf.cbSize = sizeof(cf);
2478     }
2479     // we can only change the format of the selection, so select the range we
2480     // want and restore the old selection later
2481     long startOld, endOld;
2482     GetSelection(&startOld, &endOld);
2483
2484     // but do we really have to change the selection?
2485     bool changeSel = position != startOld || position != endOld;
2486
2487     if ( changeSel )
2488     {
2489         DoSetSelection(position, position, false /* don't scroll caret into view */);
2490     }
2491
2492     // get the selection formatting
2493     (void) ::SendMessage(GetHwnd(), EM_GETCHARFORMAT,
2494                             SCF_SELECTION, (LPARAM)&cf) ;
2495
2496     LOGFONT lf;
2497     lf.lfHeight = cf.yHeight;
2498     lf.lfWidth = 0;
2499     lf.lfCharSet = ANSI_CHARSET; // FIXME: how to get correct charset?
2500     lf.lfClipPrecision = 0;
2501     lf.lfEscapement = 0;
2502     wxStrcpy(lf.lfFaceName, cf.szFaceName);
2503     if (cf.dwEffects & CFE_ITALIC)
2504         lf.lfItalic = TRUE;
2505     lf.lfOrientation = 0;
2506     lf.lfPitchAndFamily = cf.bPitchAndFamily;
2507     lf.lfQuality = 0;
2508     if (cf.dwEffects & CFE_STRIKEOUT)
2509         lf.lfStrikeOut = TRUE;
2510     if (cf.dwEffects & CFE_UNDERLINE)
2511         lf.lfUnderline = TRUE;
2512     if (cf.dwEffects & CFE_BOLD)
2513         lf.lfWeight = FW_BOLD;
2514
2515     wxFont font = wxCreateFontFromLogFont(& lf);
2516     if (font.Ok())
2517     {
2518         style.SetFont(font);
2519     }
2520     style.SetTextColour(wxColour(cf.crTextColor));
2521
2522 #if wxUSE_RICHEDIT2
2523     if ( m_verRichEdit != 1 )
2524     {
2525         // cf.dwMask |= CFM_BACKCOLOR;
2526         style.SetBackgroundColour(wxColour(cf.crBackColor));
2527     }
2528 #endif // wxUSE_RICHEDIT2
2529
2530     // now get the paragraph formatting
2531     PARAFORMAT2 pf;
2532     wxZeroMemory(pf);
2533     // we can't use PARAFORMAT2 with RichEdit 1.0, so pretend it is a simple
2534     // PARAFORMAT in that case
2535 #if wxUSE_RICHEDIT2
2536     if ( m_verRichEdit == 1 )
2537     {
2538         // this is the only thing the control is going to grok
2539         pf.cbSize = sizeof(PARAFORMAT);
2540     }
2541     else
2542 #endif
2543     {
2544         // PARAFORMAT or PARAFORMAT2
2545         pf.cbSize = sizeof(pf);
2546     }
2547
2548     // do format the selection
2549     (void) ::SendMessage(GetHwnd(), EM_GETPARAFORMAT, 0, (LPARAM) &pf) ;
2550
2551     style.SetLeftIndent( (int) ((double) pf.dxStartIndent * twips2mm * 10.0), (int) ((double) pf.dxOffset * twips2mm * 10.0) );
2552     style.SetRightIndent( (int) ((double) pf.dxRightIndent * twips2mm * 10.0) );
2553
2554     if (pf.wAlignment == PFA_CENTER)
2555         style.SetAlignment(wxTEXT_ALIGNMENT_CENTRE);
2556     else if (pf.wAlignment == PFA_RIGHT)
2557         style.SetAlignment(wxTEXT_ALIGNMENT_RIGHT);
2558     else if (pf.wAlignment == PFA_JUSTIFY)
2559         style.SetAlignment(wxTEXT_ALIGNMENT_JUSTIFIED);
2560     else
2561         style.SetAlignment(wxTEXT_ALIGNMENT_LEFT);
2562
2563     wxArrayInt tabStops;
2564     size_t i;
2565     for (i = 0; i < (size_t) pf.cTabCount; i++)
2566     {
2567         tabStops.Add( (int) ((double) (pf.rgxTabs[i] & 0xFFFF) * twips2mm * 10.0) );
2568     }
2569
2570     if ( changeSel )
2571     {
2572         // restore the original selection
2573         DoSetSelection(startOld, endOld, false);
2574     }
2575
2576     return true;
2577 }
2578
2579 #endif
2580
2581 // ----------------------------------------------------------------------------
2582 // wxRichEditModule
2583 // ----------------------------------------------------------------------------
2584
2585 bool wxRichEditModule::OnInit()
2586 {
2587     // don't do anything - we will load it when needed
2588     return true;
2589 }
2590
2591 void wxRichEditModule::OnExit()
2592 {
2593     for ( size_t i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
2594     {
2595         if ( ms_hRichEdit[i] )
2596         {
2597             ::FreeLibrary(ms_hRichEdit[i]);
2598             ms_hRichEdit[i] = NULL;
2599         }
2600     }
2601 }
2602
2603 /* static */
2604 bool wxRichEditModule::Load(int version)
2605 {
2606     // we don't support loading richedit 3.0 as I don't know how to distinguish
2607     // it from 2.0 anyhow
2608     wxCHECK_MSG( version == 1 || version == 2, false,
2609                  _T("incorrect richedit control version requested") );
2610
2611     // make it the index in the array
2612     version--;
2613
2614     if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
2615     {
2616         // we had already tried to load it and failed
2617         return false;
2618     }
2619
2620     if ( ms_hRichEdit[version] )
2621     {
2622         // we've already got this one
2623         return true;
2624     }
2625
2626     wxString dllname = version ? _T("riched20") : _T("riched32");
2627     dllname += _T(".dll");
2628
2629     ms_hRichEdit[version] = ::LoadLibrary(dllname);
2630
2631     if ( !ms_hRichEdit[version] )
2632     {
2633         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
2634
2635         ms_hRichEdit[version] = (HINSTANCE)-1;
2636
2637         return false;
2638     }
2639
2640     return true;
2641 }
2642
2643 #endif // wxUSE_RICHEDIT
2644
2645 #endif // wxUSE_TEXTCTRL && !__SMARTPHONE__