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 and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 #ifdef __GNUG__
  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
  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 #endif
  42
  43 #include "wx/module.h"
  44
  45 #if wxUSE_CLIPBOARD
  46     #include "wx/clipbrd.h"
  47 #endif
  48
  49 #include "wx/textfile.h"
  50
  51 #include <windowsx.h>
  52
  53 #include "wx/msw/private.h"
  54
  55 #include <string.h>
  56 #include <stdlib.h>
  57 #include <sys/types.h>
  58
  59 #if wxUSE_RICHEDIT && (!defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__))
  60     #include <richedit.h>
  61 #endif
  62
  63 // old mingw32 doesn't define this
  64 #ifndef CFM_CHARSET
  65     #define CFM_CHARSET 0x08000000
  66 #endif // CFM_CHARSET
  67
  68 #ifndef CFM_BACKCOLOR
  69     #define CFM_BACKCOLOR 0x04000000
  70 #endif
  71
  72 // cygwin does not have these defined for richedit
  73 #ifndef ENM_LINK
  74     #define ENM_LINK 0x04000000
  75 #endif
  76
  77 #ifndef EM_AUTOURLDETECT
  78     #define EM_AUTOURLDETECT (WM_USER + 91)
  79 #endif
  80
  81 #ifndef EN_LINK
  82     #define EN_LINK 0x070b
  83
  84     typedef struct _enlink
  85     {
  86         NMHDR nmhdr;
  87         UINT msg;
  88         WPARAM wParam;
  89         LPARAM lParam;
  90         CHARRANGE chrg;
  91     } ENLINK;
  92 #endif // ENLINK
  93
  94 #ifndef SF_UNICODE
  95     #define SF_UNICODE 0x0010
  96 #endif
  97
  98 // Watcom C++ doesn't define this
  99 #ifndef SCF_ALL
 100 #define SCF_ALL 0x0004
 101 #endif
 102
 103 // ----------------------------------------------------------------------------
 104 // private functions
 105 // ----------------------------------------------------------------------------
 106
 107 #if wxUSE_RICHEDIT
 108
 109 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb);
 110
 111 #endif // wxUSE_RICHEDIT
 112
 113 // ----------------------------------------------------------------------------
 114 // private classes
 115 // ----------------------------------------------------------------------------
 116
 117 #if wxUSE_RICHEDIT
 118
 119 // this module initializes RichEdit DLL(s) if needed
 120 class wxRichEditModule : public wxModule
 121 {
 122 public:
 123     virtual bool OnInit();
 124     virtual void OnExit();
 125
 126     // load the richedit DLL of at least of required version
 127     static bool Load(int version = 1);
 128
 129 private:
 130     // the handles to richedit 1.0 and 2.0 (or 3.0) DLLs
 131     static HINSTANCE ms_hRichEdit[2];
 132
 133     DECLARE_DYNAMIC_CLASS(wxRichEditModule)
 134 };
 135
 136 HINSTANCE wxRichEditModule::ms_hRichEdit[2] = { NULL, NULL };
 137
 138 IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
 139
 140 #endif // wxUSE_RICHEDIT
 141
 142 // ----------------------------------------------------------------------------
 143 // event tables and other macros
 144 // ----------------------------------------------------------------------------
 145
 146 IMPLEMENT_DYNAMIC_CLASS(wxTextCtrl, wxControl)
 147
 148 BEGIN_EVENT_TABLE(wxTextCtrl, wxControl)
 149     EVT_CHAR(wxTextCtrl::OnChar)
 150     EVT_DROP_FILES(wxTextCtrl::OnDropFiles)
 151
 152     EVT_MENU(wxID_CUT, wxTextCtrl::OnCut)
 153     EVT_MENU(wxID_COPY, wxTextCtrl::OnCopy)
 154     EVT_MENU(wxID_PASTE, wxTextCtrl::OnPaste)
 155     EVT_MENU(wxID_UNDO, wxTextCtrl::OnUndo)
 156     EVT_MENU(wxID_REDO, wxTextCtrl::OnRedo)
 157
 158     EVT_UPDATE_UI(wxID_CUT, wxTextCtrl::OnUpdateCut)
 159     EVT_UPDATE_UI(wxID_COPY, wxTextCtrl::OnUpdateCopy)
 160     EVT_UPDATE_UI(wxID_PASTE, wxTextCtrl::OnUpdatePaste)
 161     EVT_UPDATE_UI(wxID_UNDO, wxTextCtrl::OnUpdateUndo)
 162     EVT_UPDATE_UI(wxID_REDO, wxTextCtrl::OnUpdateRedo)
 163 #ifdef __WIN16__
 164     EVT_ERASE_BACKGROUND(wxTextCtrl::OnEraseBackground)
 165 #endif
 166 END_EVENT_TABLE()
 167
 168 // ============================================================================
 169 // implementation
 170 // ============================================================================
 171
 172 // ----------------------------------------------------------------------------
 173 // creation
 174 // ----------------------------------------------------------------------------
 175
 176 void wxTextCtrl::Init()
 177 {
 178 #if wxUSE_RICHEDIT
 179     m_verRichEdit = 0;
 180 #endif
 181 }
 182
 183 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
 184                         const wxString& value,
 185                         const wxPoint& pos,
 186                         const wxSize& size,
 187                         long style,
 188                         const wxValidator& validator,
 189                         const wxString& name)
 190 {
 191     // base initialization
 192     if ( !CreateBase(parent, id, pos, size, style, validator, name) )
 193         return FALSE;
 194
 195     if ( parent )
 196         parent->AddChild(this);
 197
 198     // translate wxWin style flags to MSW ones
 199     WXDWORD msStyle = MSWGetCreateWindowFlags();
 200
 201     // do create the control - either an EDIT or RICHEDIT
 202     wxString windowClass = wxT("EDIT");
 203
 204 #if wxUSE_RICHEDIT
 205     if ( m_windowStyle & wxTE_AUTO_URL )
 206     {
 207         // automatic URL detection only works in RichEdit 2.0+
 208         m_windowStyle |= wxTE_RICH2;
 209     }
 210
 211     if ( m_windowStyle & wxTE_RICH2 )
 212     {
 213         // using richedit 2.0 implies using wxTE_RICH
 214         m_windowStyle |= wxTE_RICH;
 215     }
 216
 217     // we need to load the richedit DLL before creating the rich edit control
 218     if ( m_windowStyle & wxTE_RICH )
 219     {
 220         static bool s_errorGiven = FALSE;// MT-FIXME
 221
 222         // Which version do we need? Use 1.0 by default because it is much more
 223         // like the the standard EDIT or 2.0 if explicitly requested, but use
 224         // only 2.0 in Unicode mode as 1.0 doesn't support Unicode at all
 225         //
 226         // TODO: RichEdit 3.0 is apparently capable of emulating RichEdit 1.0
 227         //       (and thus EDIT) much better than RichEdit 2.0 so we probably
 228         //       should use 3.0 if available as it is the best of both worlds -
 229         //       but as I can't test it right now I don't do it (VZ)
 230 #if wxUSE_UNICODE
 231         const int verRichEdit = 2;
 232 #else // !wxUSE_UNICODE
 233         int verRichEdit = m_windowStyle & wxTE_RICH2 ? 2 : 1;
 234 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
 235
 236         // only give the error msg once if the DLL can't be loaded
 237         if ( !s_errorGiven )
 238         {
 239             // try to load the RichEdit DLL (will do nothing if already done)
 240             if ( !wxRichEditModule::Load(verRichEdit) )
 241             {
 242 #if !wxUSE_UNICODE
 243                 // try another version?
 244                 verRichEdit = 3 - verRichEdit; // 1 <-> 2
 245
 246                 if ( !wxRichEditModule::Load(verRichEdit) )
 247 #endif // wxUSE_UNICODE
 248                 {
 249                     wxLogError(_("Impossible to create a rich edit control, using simple text control instead. Please reinstall riched32.dll"));
 250
 251                     s_errorGiven = TRUE;
 252                 }
 253             }
 254         }
 255
 256         // have we managed to load any richedit version?
 257         if ( !s_errorGiven )
 258         {
 259             msStyle |= ES_AUTOVSCROLL;
 260
 261             m_verRichEdit = verRichEdit;
 262             if ( m_verRichEdit == 1 )
 263             {
 264                 windowClass = wxT("RICHEDIT");
 265             }
 266             else
 267             {
 268 #ifndef RICHEDIT_CLASS
 269                 wxString RICHEDIT_CLASS;
 270                 RICHEDIT_CLASS.Printf(_T("RichEdit%d0"), m_verRichEdit);
 271 #if wxUSE_UNICODE
 272                 RICHEDIT_CLASS += _T('W');
 273 #else // ANSI
 274                 RICHEDIT_CLASS += _T('A');
 275 #endif // Unicode/ANSI
 276 #endif // !RICHEDIT_CLASS
 277
 278                 windowClass = RICHEDIT_CLASS;
 279             }
 280         }
 281     }
 282 #endif // wxUSE_RICHEDIT
 283
 284     // we need to turn '\n's into "\r\n"s for the multiline controls
 285     wxString valueWin;
 286     if ( m_windowStyle & wxTE_MULTILINE )
 287     {
 288         valueWin = wxTextFile::Translate(value, wxTextFileType_Dos);
 289     }
 290     else // single line
 291     {
 292         valueWin = value;
 293     }
 294
 295     if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
 296         return FALSE;
 297
 298     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
 299
 300 #if wxUSE_RICHEDIT
 301     if ( IsRich() )
 302     {
 303         // have to enable events manually
 304         LPARAM mask = ENM_CHANGE | ENM_DROPFILES | ENM_SELCHANGE | ENM_UPDATE;
 305
 306         if ( m_windowStyle & wxTE_AUTO_URL )
 307         {
 308             mask |= ENM_LINK;
 309
 310             ::SendMessage(GetHwnd(), EM_AUTOURLDETECT, TRUE, 0);
 311         }
 312
 313         ::SendMessage(GetHwnd(), EM_SETEVENTMASK, 0, mask);
 314     }
 315 #endif // wxUSE_RICHEDIT
 316
 317     return TRUE;
 318 }
 319
 320 // Make sure the window style (etc.) reflects the HWND style (roughly)
 321 void wxTextCtrl::AdoptAttributesFromHWND()
 322 {
 323     wxWindow::AdoptAttributesFromHWND();
 324
 325     HWND hWnd = GetHwnd();
 326     long style = ::GetWindowLong(hWnd, GWL_STYLE);
 327
 328     // retrieve the style to see whether this is an edit or richedit ctrl
 329 #if wxUSE_RICHEDIT
 330     wxString classname = wxGetWindowClass(GetHWND());
 331
 332     if ( classname.IsSameAs(_T("EDIT"), FALSE /* no case */) )
 333     {
 334         m_verRichEdit = 0;
 335     }
 336     else // rich edit?
 337     {
 338         wxChar c;
 339         if ( wxSscanf(classname, _T("RichEdit%d0%c"), &m_verRichEdit, &c) != 2 )
 340         {
 341             wxLogDebug(_T("Unknown edit control '%s'."), classname.c_str());
 342
 343             m_verRichEdit = 0;
 344         }
 345     }
 346 #endif // wxUSE_RICHEDIT
 347
 348     if (style & ES_MULTILINE)
 349         m_windowStyle |= wxTE_MULTILINE;
 350     if (style & ES_PASSWORD)
 351         m_windowStyle |= wxTE_PASSWORD;
 352     if (style & ES_READONLY)
 353         m_windowStyle |= wxTE_READONLY;
 354     if (style & ES_WANTRETURN)
 355         m_windowStyle |= wxTE_PROCESS_ENTER;
 356 }
 357
 358 WXDWORD wxTextCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 359 {
 360     long msStyle = wxControl::MSWGetStyle(style, exstyle);
 361
 362     // default styles
 363     msStyle |= ES_LEFT | WS_TABSTOP;
 364
 365     if ( style & wxTE_MULTILINE )
 366     {
 367         wxASSERT_MSG( !(style & wxTE_PROCESS_ENTER),
 368                       wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );
 369
 370         msStyle |= ES_MULTILINE | ES_WANTRETURN;
 371         if ( !(style & wxTE_NO_VSCROLL) )
 372             msStyle |= WS_VSCROLL;
 373
 374         style |= wxTE_PROCESS_ENTER;
 375     }
 376     else // !multiline
 377     {
 378         // there is really no reason to not have this style for single line
 379         // text controls
 380         msStyle |= ES_AUTOHSCROLL;
 381     }
 382
 383     if ( style & wxHSCROLL )
 384         msStyle |= WS_HSCROLL | ES_AUTOHSCROLL;
 385
 386     if ( style & wxTE_READONLY )
 387         msStyle |= ES_READONLY;
 388
 389     if ( style & wxTE_PASSWORD )
 390         msStyle |= ES_PASSWORD;
 391
 392     if ( style & wxTE_AUTO_SCROLL )
 393         msStyle |= ES_AUTOHSCROLL;
 394
 395     if ( style & wxTE_NOHIDESEL )
 396         msStyle |= ES_NOHIDESEL;
 397
 398     return msStyle;
 399 }
 400
 401 void wxTextCtrl::SetWindowStyleFlag(long style)
 402 {
 403 #if wxUSE_RICHEDIT
 404     // we have to deal with some styles separately because they can't be
 405     // changed by simply calling SetWindowLong(GWL_STYLE) but can be changed
 406     // using richedit-specific EM_SETOPTIONS
 407     if ( IsRich() &&
 408             ((style & wxTE_NOHIDESEL) != (GetWindowStyle() & wxTE_NOHIDESEL)) )
 409     {
 410         bool set = (style & wxTE_NOHIDESEL) != 0;
 411
 412         ::SendMessage(GetHwnd(), EM_SETOPTIONS, set ? ECOOP_OR : ECOOP_AND,
 413                       set ? ECO_NOHIDESEL : ~ECO_NOHIDESEL);
 414     }
 415 #endif // wxUSE_RICHEDIT
 416
 417     wxControl::SetWindowStyleFlag(style);
 418 }
 419
 420 // ----------------------------------------------------------------------------
 421 // set/get the controls text
 422 // ----------------------------------------------------------------------------
 423
 424 wxString wxTextCtrl::GetValue() const
 425 {
 426     // range 0..-1 is special for GetRange() and means to retrieve all text
 427     return GetRange(0, -1);
 428 }
 429
 430 wxString wxTextCtrl::GetRange(long from, long to) const
 431 {
 432     wxString str;
 433
 434     if ( from >= to && to != -1 )
 435     {
 436         // nothing to retrieve
 437         return str;
 438     }
 439
 440 #if wxUSE_RICHEDIT
 441     if ( IsRich() )
 442     {
 443         int len = GetWindowTextLength(GetHwnd());
 444         if ( len > from )
 445         {
 446             // alloc one extra WORD as needed by the control
 447             wxChar *p = str.GetWriteBuf(++len);
 448
 449             TEXTRANGE textRange;
 450             textRange.chrg.cpMin = from;
 451             textRange.chrg.cpMax = to == -1 ? len : to;
 452             textRange.lpstrText = p;
 453
 454             (void)SendMessage(GetHwnd(), EM_GETTEXTRANGE, 0, (LPARAM)&textRange);
 455
 456             if ( m_verRichEdit > 1 )
 457             {
 458                 // RichEdit 2.0 uses just CR ('\r') for the newlines which is
 459                 // neither Unix nor Windows style - convert it to something
 460                 // reasonable
 461                 for ( ; *p; p++ )
 462                 {
 463                     if ( *p == _T('\r') )
 464                         *p = _T('\n');
 465                 }
 466             }
 467
 468             str.UngetWriteBuf();
 469
 470             if ( m_verRichEdit == 1 )
 471             {
 472                 // convert to the canonical form - see comment below
 473                 str = wxTextFile::Translate(str, wxTextFileType_Unix);
 474             }
 475         }
 476         //else: no text at all, leave the string empty
 477     }
 478     else
 479 #endif // wxUSE_RICHEDIT
 480     {
 481         // retrieve all text
 482         str = wxGetWindowText(GetHWND());
 483
 484         // need only a range?
 485         if ( from < to )
 486         {
 487             str = str.Mid(from, to - from);
 488         }
 489
 490         // WM_GETTEXT uses standard DOS CR+LF (\r\n) convention - convert to the
 491         // canonical one (same one as above) for consistency with the other kinds
 492         // of controls and, more importantly, with the other ports
 493         str = wxTextFile::Translate(str, wxTextFileType_Unix);
 494     }
 495
 496     return str;
 497 }
 498
 499 void wxTextCtrl::SetValue(const wxString& value)
 500 {
 501     // if the text is long enough, it's faster to just set it instead of first
 502     // comparing it with the old one (chances are that it will be different
 503     // anyhow, this comparison is there to avoid flicker for small single-line
 504     // edit controls mostly)
 505     if ( (value.length() > 0x400) || (value != GetValue()) )
 506     {
 507         DoWriteText(value, FALSE /* not selection only */);
 508
 509         // mark the control as being not dirty - we changed its text, not the
 510         // user
 511         DiscardEdits();
 512
 513         // for compatibility, don't move the cursor when doing SetValue()
 514         SetInsertionPoint(0);
 515     }
 516 }
 517
 518 #if wxUSE_RICHEDIT && (!wxUSE_UNICODE || wxUSE_UNICODE_MSLU)
 519
 520 DWORD CALLBACK wxRichEditStreamIn(DWORD dwCookie, BYTE *buf, LONG cb, LONG *pcb)
 521 {
 522     *pcb = 0;
 523
 524     wchar_t *wbuf = (wchar_t *)buf;
 525     const wchar_t *wpc = *(const wchar_t **)dwCookie;
 526     while ( cb && *wpc )
 527     {
 528         *wbuf++ = *wpc++;
 529
 530         cb -= sizeof(wchar_t);
 531         (*pcb) += sizeof(wchar_t);
 532     }
 533
 534     *(const wchar_t **)dwCookie = wpc;
 535
 536     return 0;
 537 }
 538
 539 extern long wxEncodingToCodepage(wxFontEncoding encoding); // from utils.cpp
 540
 541 #if wxUSE_UNICODE_MSLU
 542 bool wxTextCtrl::StreamIn(const wxString& value,
 543                           wxFontEncoding WXUNUSED(encoding),
 544                           bool selectionOnly)
 545 {
 546     const wchar_t *wpc = value.c_str();
 547 #else // !wxUSE_UNICODE_MSLU
 548 bool wxTextCtrl::StreamIn(const wxString& value,
 549                           wxFontEncoding encoding,
 550                           bool selectionOnly)
 551 {
 552     // we have to use EM_STREAMIN to force richedit control 2.0+ to show any
 553     // text in the non default charset - otherwise it thinks it knows better
 554     // than we do and always shows it in the default one
 555
 556     // first get the Windows code page for this encoding
 557     long codepage = wxEncodingToCodepage(encoding);
 558     if ( codepage == -1 )
 559     {
 560         // unknown encoding
 561         return FALSE;
 562     }
 563
 564     // next translate to Unicode using this code page
 565     int len = ::MultiByteToWideChar(codepage, 0, value, -1, NULL, 0);
 566
 567 #if wxUSE_WCHAR_T
 568     wxWCharBuffer wchBuf(len);
 569 #else
 570     wchar_t *wchBuf = (wchar_t *)malloc((len + 1)*sizeof(wchar_t));
 571 #endif
 572
 573     if ( !::MultiByteToWideChar(codepage, 0, value, -1,
 574                                 (wchar_t *)(const wchar_t *)wchBuf, len) )
 575     {
 576         wxLogLastError(_T("MultiByteToWideChar"));
 577     }
 578
 579     // finally, stream it in the control
 580     const wchar_t *wpc = wchBuf;
 581 #endif // wxUSE_UNICODE_MSLU
 582
 583     EDITSTREAM eds;
 584     wxZeroMemory(eds);
 585     eds.dwCookie = (DWORD)&wpc;
 586     // the cast below is needed for broken (very) old mingw32 headers
 587     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 588
 589     if ( !::SendMessage(GetHwnd(), EM_STREAMIN,
 590                         SF_TEXT |
 591                         SF_UNICODE |
 592                         (selectionOnly ? SFF_SELECTION : 0),
 593                         (LPARAM)&eds) || eds.dwError )
 594     {
 595         wxLogLastError(_T("EM_STREAMIN"));
 596     }
 597
 598 #if !wxUSE_WCHAR_T
 599     free(wchBuf);
 600 #endif // !wxUSE_WCHAR_T
 601
 602     return TRUE;
 603 }
 604
 605 #endif // wxUSE_RICHEDIT
 606
 607 void wxTextCtrl::WriteText(const wxString& value)
 608 {
 609     DoWriteText(value);
 610 }
 611
 612 void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
 613 {
 614     wxString valueDos;
 615     if ( m_windowStyle & wxTE_MULTILINE )
 616         valueDos = wxTextFile::Translate(value, wxTextFileType_Dos);
 617     else
 618         valueDos = value;
 619
 620 #if wxUSE_RICHEDIT
 621     // there are several complications with the rich edit controls here
 622     bool done = FALSE;
 623     if ( IsRich() )
 624     {
 625         // first, ensure that the new text will be in the default style
 626         if ( !m_defaultStyle.IsDefault() )
 627         {
 628             long start, end;
 629             GetSelection(&start, &end);
 630             SetStyle(start, end, m_defaultStyle);
 631         }
 632
 633 #if wxUSE_UNICODE_MSLU
 634         // RichEdit doesn't have Unicode version of EM_REPLACESEL on Win9x,
 635         // but EM_STREAMIN works
 636         if ( wxGetOsVersion() == wxWIN95 && GetRichVersion() > 1 )
 637         {
 638            done = StreamIn(valueDos, wxFONTENCODING_SYSTEM, selectionOnly);
 639         }
 640 #endif // wxUSE_UNICODE_MSLU
 641
 642 #if !wxUSE_UNICODE
 643         // next check if the text we're inserting must be shown in a non
 644         // default charset -- this only works for RichEdit > 1.0
 645         if ( GetRichVersion() > 1 )
 646         {
 647             wxFont font = m_defaultStyle.GetFont();
 648             if ( !font.Ok() )
 649                 font = GetFont();
 650
 651             if ( font.Ok() )
 652             {
 653                wxFontEncoding encoding = font.GetEncoding();
 654                if ( encoding != wxFONTENCODING_SYSTEM )
 655                {
 656                    done = StreamIn(valueDos, encoding, selectionOnly);
 657                }
 658             }
 659         }
 660 #endif // !wxUSE_UNICODE
 661     }
 662
 663     if ( !done )
 664 #endif // wxUSE_RICHEDIT
 665     {
 666         if ( !selectionOnly )
 667         {
 668             SetSelection(-1, -1);
 669         }
 670
 671         ::SendMessage(GetHwnd(), EM_REPLACESEL, 0, (LPARAM)valueDos.c_str());
 672     }
 673
 674     AdjustSpaceLimit();
 675 }
 676
 677 void wxTextCtrl::AppendText(const wxString& text)
 678 {
 679     SetInsertionPointEnd();
 680
 681     WriteText(text);
 682 }
 683
 684 void wxTextCtrl::Clear()
 685 {
 686     ::SetWindowText(GetHwnd(), wxT(""));
 687 }
 688
 689 // ----------------------------------------------------------------------------
 690 // Clipboard operations
 691 // ----------------------------------------------------------------------------
 692
 693 void wxTextCtrl::Copy()
 694 {
 695     if (CanCopy())
 696     {
 697         ::SendMessage(GetHwnd(), WM_COPY, 0, 0L);
 698     }
 699 }
 700
 701 void wxTextCtrl::Cut()
 702 {
 703     if (CanCut())
 704     {
 705         ::SendMessage(GetHwnd(), WM_CUT, 0, 0L);
 706     }
 707 }
 708
 709 void wxTextCtrl::Paste()
 710 {
 711     if (CanPaste())
 712     {
 713         ::SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
 714     }
 715 }
 716
 717 bool wxTextCtrl::CanCopy() const
 718 {
 719     // Can copy if there's a selection
 720     long from, to;
 721     GetSelection(&from, &to);
 722     return from != to;
 723 }
 724
 725 bool wxTextCtrl::CanCut() const
 726 {
 727     return CanCopy() && IsEditable();
 728 }
 729
 730 bool wxTextCtrl::CanPaste() const
 731 {
 732     if ( !IsEditable() )
 733         return FALSE;
 734
 735 #if wxUSE_RICHEDIT
 736     if ( IsRich() )
 737     {
 738         UINT cf = 0; // 0 == any format
 739
 740         return ::SendMessage(GetHwnd(), EM_CANPASTE, cf, 0) != 0;
 741     }
 742 #endif // wxUSE_RICHEDIT
 743
 744     // Standard edit control: check for straight text on clipboard
 745     if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
 746         return FALSE;
 747
 748     bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
 749     ::CloseClipboard();
 750
 751     return isTextAvailable;
 752 }
 753
 754 // ----------------------------------------------------------------------------
 755 // Accessors
 756 // ----------------------------------------------------------------------------
 757
 758 void wxTextCtrl::SetEditable(bool editable)
 759 {
 760     HWND hWnd = GetHwnd();
 761     SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
 762 }
 763
 764 void wxTextCtrl::SetInsertionPoint(long pos)
 765 {
 766     DoSetSelection(pos, pos);
 767 }
 768
 769 void wxTextCtrl::SetInsertionPointEnd()
 770 {
 771     long pos;
 772
 773 #if wxUSE_RICHEDIT
 774     if ( m_verRichEdit == 1 )
 775     {
 776         // we don't have to waste time calling GetLastPosition() in this case
 777         pos = -1;
 778     }
 779     else // !RichEdit 1.0
 780 #endif // wxUSE_RICHEDIT
 781     {
 782         pos = GetLastPosition();
 783     }
 784
 785     SetInsertionPoint(pos);
 786 }
 787
 788 long wxTextCtrl::GetInsertionPoint() const
 789 {
 790 #if wxUSE_RICHEDIT
 791     if ( IsRich() )
 792     {
 793         CHARRANGE range;
 794         range.cpMin = 0;
 795         range.cpMax = 0;
 796         SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &range);
 797         return range.cpMin;
 798     }
 799 #endif // wxUSE_RICHEDIT
 800
 801     DWORD Pos = (DWORD)SendMessage(GetHwnd(), EM_GETSEL, 0, 0L);
 802     return Pos & 0xFFFF;
 803 }
 804
 805 long wxTextCtrl::GetLastPosition() const
 806 {
 807     int numLines = GetNumberOfLines();
 808     long posStartLastLine = XYToPosition(0, numLines - 1);
 809
 810     long lenLastLine = GetLengthOfLineContainingPos(posStartLastLine);
 811
 812     return posStartLastLine + lenLastLine;
 813 }
 814
 815 // If the return values from and to are the same, there is no
 816 // selection.
 817 void wxTextCtrl::GetSelection(long* from, long* to) const
 818 {
 819 #if wxUSE_RICHEDIT
 820     if ( IsRich() )
 821     {
 822         CHARRANGE charRange;
 823         ::SendMessage(GetHwnd(), EM_EXGETSEL, 0, (LPARAM) &charRange);
 824
 825         *from = charRange.cpMin;
 826         *to = charRange.cpMax;
 827     }
 828     else
 829 #endif // !wxUSE_RICHEDIT
 830     {
 831         DWORD dwStart, dwEnd;
 832         ::SendMessage(GetHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
 833
 834         *from = dwStart;
 835         *to = dwEnd;
 836     }
 837 }
 838
 839 bool wxTextCtrl::IsEditable() const
 840 {
 841     long style = ::GetWindowLong(GetHwnd(), GWL_STYLE);
 842
 843     return (style & ES_READONLY) == 0;
 844 }
 845
 846 // ----------------------------------------------------------------------------
 847 // selection
 848 // ----------------------------------------------------------------------------
 849
 850 void wxTextCtrl::SetSelection(long from, long to)
 851 {
 852     // if from and to are both -1, it means (in wxWindows) that all text should
 853     // be selected - translate into Windows convention
 854     if ( (from == -1) && (to == -1) )
 855     {
 856         from = 0;
 857         to = -1;
 858     }
 859
 860     DoSetSelection(from, to);
 861 }
 862
 863 void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
 864 {
 865     HWND hWnd = GetHwnd();
 866
 867 #ifdef __WIN32__
 868 #if wxUSE_RICHEDIT
 869     if ( IsRich() )
 870     {
 871         CHARRANGE range;
 872         range.cpMin = from;
 873         range.cpMax = to;
 874         SendMessage(hWnd, EM_EXSETSEL, 0, (LPARAM) &range);
 875     }
 876     else
 877 #endif // wxUSE_RICHEDIT
 878     {
 879         SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
 880     }
 881
 882     if ( scrollCaret )
 883     {
 884         SendMessage(hWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
 885     }
 886 #else // Win16
 887     // WPARAM is 0: selection is scrolled into view
 888     SendMessage(hWnd, EM_SETSEL, (WPARAM)0, (LPARAM)MAKELONG(from, to));
 889 #endif // Win32/16
 890 }
 891
 892 // ----------------------------------------------------------------------------
 893 // Editing
 894 // ----------------------------------------------------------------------------
 895
 896 void wxTextCtrl::Replace(long from, long to, const wxString& value)
 897 {
 898     // Set selection and remove it
 899     DoSetSelection(from, to, FALSE /* don't scroll caret into view */);
 900
 901     SendMessage(GetHwnd(), EM_REPLACESEL,
 902 #ifdef __WIN32__
 903                 TRUE,
 904 #else
 905                 FALSE,
 906 #endif
 907                 (LPARAM)value.c_str());
 908 }
 909
 910 void wxTextCtrl::Remove(long from, long to)
 911 {
 912     Replace(from, to, _T(""));
 913 }
 914
 915 bool wxTextCtrl::LoadFile(const wxString& file)
 916 {
 917     if ( wxTextCtrlBase::LoadFile(file) )
 918     {
 919         // update the size limit if needed
 920         AdjustSpaceLimit();
 921
 922         return TRUE;
 923     }
 924
 925     return FALSE;
 926 }
 927
 928 bool wxTextCtrl::IsModified() const
 929 {
 930     return SendMessage(GetHwnd(), EM_GETMODIFY, 0, 0) != 0;
 931 }
 932
 933 // Makes 'unmodified'
 934 void wxTextCtrl::DiscardEdits()
 935 {
 936     SendMessage(GetHwnd(), EM_SETMODIFY, FALSE, 0L);
 937 }
 938
 939 int wxTextCtrl::GetNumberOfLines() const
 940 {
 941     return (int)SendMessage(GetHwnd(), EM_GETLINECOUNT, (WPARAM)0, (LPARAM)0);
 942 }
 943
 944 long wxTextCtrl::XYToPosition(long x, long y) const
 945 {
 946     // This gets the char index for the _beginning_ of this line
 947     long charIndex = SendMessage(GetHwnd(), EM_LINEINDEX, (WPARAM)y, (LPARAM)0);
 948
 949     return charIndex + x;
 950 }
 951
 952 bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
 953 {
 954     HWND hWnd = GetHwnd();
 955
 956     // This gets the line number containing the character
 957     long lineNo;
 958 #if wxUSE_RICHEDIT
 959     if ( IsRich() )
 960     {
 961         lineNo = SendMessage(hWnd, EM_EXLINEFROMCHAR, 0, (LPARAM)pos);
 962     }
 963     else
 964 #endif // wxUSE_RICHEDIT
 965     {
 966         lineNo = SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, 0);
 967     }
 968
 969     if ( lineNo == -1 )
 970     {
 971         // no such line
 972         return FALSE;
 973     }
 974
 975     // This gets the char index for the _beginning_ of this line
 976     long charIndex = SendMessage(hWnd, EM_LINEINDEX, (WPARAM)lineNo, (LPARAM)0);
 977     if ( charIndex == -1 )
 978     {
 979         return FALSE;
 980     }
 981
 982     // The X position must therefore be the different between pos and charIndex
 983     if ( x )
 984         *x = pos - charIndex;
 985     if ( y )
 986         *y = lineNo;
 987
 988     return TRUE;
 989 }
 990
 991 void wxTextCtrl::ShowPosition(long pos)
 992 {
 993     HWND hWnd = GetHwnd();
 994
 995     // To scroll to a position, we pass the number of lines and characters
 996     // to scroll *by*. This means that we need to:
 997     // (1) Find the line position of the current line.
 998     // (2) Find the line position of pos.
 999     // (3) Scroll by (pos - current).
1000     // For now, ignore the horizontal scrolling.
1001
1002     // Is this where scrolling is relative to - the line containing the caret?
1003     // Or is the first visible line??? Try first visible line.
1004 //    int currentLineLineNo1 = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)-1, (LPARAM)0L);
1005
1006     int currentLineLineNo = (int)SendMessage(hWnd, EM_GETFIRSTVISIBLELINE, (WPARAM)0, (LPARAM)0L);
1007
1008     int specifiedLineLineNo = (int)SendMessage(hWnd, EM_LINEFROMCHAR, (WPARAM)pos, (LPARAM)0L);
1009
1010     int linesToScroll = specifiedLineLineNo - currentLineLineNo;
1011
1012     if (linesToScroll != 0)
1013       (void)SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
1014 }
1015
1016 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
1017 {
1018     return ::SendMessage(GetHwnd(), EM_LINELENGTH, (WPARAM)pos, 0);
1019 }
1020
1021 int wxTextCtrl::GetLineLength(long lineNo) const
1022 {
1023     long pos = XYToPosition(0, lineNo);
1024
1025     return GetLengthOfLineContainingPos(pos);
1026 }
1027
1028 wxString wxTextCtrl::GetLineText(long lineNo) const
1029 {
1030     size_t len = (size_t)GetLineLength(lineNo) + 1;
1031
1032     // there must be at least enough place for the length WORD in the
1033     // buffer
1034     len += sizeof(WORD);
1035
1036     wxString str;
1037     wxChar *buf = str.GetWriteBuf(len);
1038
1039     *(WORD *)buf = (WORD)len;
1040     len = (size_t)::SendMessage(GetHwnd(), EM_GETLINE, lineNo, (LPARAM)buf);
1041     buf[len] = 0;
1042
1043     str.UngetWriteBuf(len);
1044
1045     return str;
1046 }
1047
1048 void wxTextCtrl::SetMaxLength(unsigned long len)
1049 {
1050     ::SendMessage(GetHwnd(), EM_LIMITTEXT, len, 0);
1051 }
1052
1053 // ----------------------------------------------------------------------------
1054 // Undo/redo
1055 // ----------------------------------------------------------------------------
1056
1057 void wxTextCtrl::Undo()
1058 {
1059     if (CanUndo())
1060     {
1061         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1062     }
1063 }
1064
1065 void wxTextCtrl::Redo()
1066 {
1067     if (CanRedo())
1068     {
1069         // Same as Undo, since Undo undoes the undo, i.e. a redo.
1070         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
1071     }
1072 }
1073
1074 bool wxTextCtrl::CanUndo() const
1075 {
1076     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1077 }
1078
1079 bool wxTextCtrl::CanRedo() const
1080 {
1081     return ::SendMessage(GetHwnd(), EM_CANUNDO, 0, 0) != 0;
1082 }
1083
1084 // ----------------------------------------------------------------------------
1085 // implemenation details
1086 // ----------------------------------------------------------------------------
1087
1088 void wxTextCtrl::Command(wxCommandEvent & event)
1089 {
1090     SetValue(event.GetString());
1091     ProcessCommand (event);
1092 }
1093
1094 void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
1095 {
1096     // By default, load the first file into the text window.
1097     if (event.GetNumberOfFiles() > 0)
1098     {
1099         LoadFile(event.GetFiles()[0]);
1100     }
1101 }
1102
1103 // ----------------------------------------------------------------------------
1104 // kbd input processing
1105 // ----------------------------------------------------------------------------
1106
1107 bool wxTextCtrl::MSWShouldPreProcessMessage(WXMSG* pMsg)
1108 {
1109     MSG *msg = (MSG *)pMsg;
1110
1111     // check for our special keys here: if we don't do it and the parent frame
1112     // uses them as accelerators, they wouldn't work at all, so we disable
1113     // usual preprocessing for them
1114     if ( msg->message == WM_KEYDOWN )
1115     {
1116         WORD vkey = (WORD) msg->wParam;
1117         if ( (HIWORD(msg->lParam) & KF_ALTDOWN) == KF_ALTDOWN )
1118         {
1119             if ( vkey == VK_BACK )
1120                 return FALSE;
1121         }
1122         else // no Alt
1123         {
1124             if ( wxIsCtrlDown() )
1125             {
1126                 switch ( vkey )
1127                 {
1128                     case 'C':
1129                     case 'V':
1130                     case 'X':
1131                     case VK_INSERT:
1132                     case VK_DELETE:
1133                     case VK_HOME:
1134                     case VK_END:
1135                         return FALSE;
1136                 }
1137             }
1138             else if ( wxIsShiftDown() )
1139             {
1140                 if ( vkey == VK_INSERT || vkey == VK_DELETE )
1141                     return FALSE;
1142             }
1143         }
1144     }
1145
1146     return wxControl::MSWShouldPreProcessMessage(pMsg);
1147 }
1148
1149 void wxTextCtrl::OnChar(wxKeyEvent& event)
1150 {
1151     switch ( event.KeyCode() )
1152     {
1153         case WXK_RETURN:
1154             if ( !(m_windowStyle & wxTE_MULTILINE) )
1155             {
1156                 wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
1157                 InitCommandEvent(event);
1158                 event.SetString(GetValue());
1159                 if ( GetEventHandler()->ProcessEvent(event) )
1160                     return;
1161             }
1162             //else: multiline controls need Enter for themselves
1163
1164             break;
1165
1166         case WXK_TAB:
1167             // always produce navigation event - even if we process TAB
1168             // ourselves the fact that we got here means that the user code
1169             // decided to skip processing of this TAB - probably to let it
1170             // do its default job.
1171             {
1172                 wxNavigationKeyEvent eventNav;
1173                 eventNav.SetDirection(!event.ShiftDown());
1174                 eventNav.SetWindowChange(event.ControlDown());
1175                 eventNav.SetEventObject(this);
1176
1177                 if ( GetParent()->GetEventHandler()->ProcessEvent(eventNav) )
1178                     return;
1179             }
1180             break;
1181     }
1182
1183     // no, we didn't process it
1184     event.Skip();
1185 }
1186
1187 long wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
1188 {
1189     // we always want the characters and the arrows
1190     if ( nMsg == WM_GETDLGCODE )
1191     {
1192         // we always want the chars and the arrows
1193         long lDlgCode = DLGC_WANTCHARS | DLGC_WANTARROWS;
1194
1195         // we may have several different cases:
1196         // 1. normal case: both TAB and ENTER are used for dialog navigation
1197         // 2. ctrl which wants TAB for itself: ENTER is used to pass to the next
1198         //    control in the dialog
1199         // 3. ctrl which wants ENTER for itself: TAB is used for dialog navigation
1200         // 4. ctrl which wants both TAB and ENTER: Ctrl-ENTER is used to pass to
1201         //    the next control
1202         if ( m_windowStyle & wxTE_PROCESS_ENTER )
1203             lDlgCode |= DLGC_WANTMESSAGE;
1204         if ( m_windowStyle & wxTE_PROCESS_TAB )
1205             lDlgCode |= DLGC_WANTTAB;
1206
1207         return lDlgCode;
1208     }
1209
1210     return wxTextCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
1211 }
1212
1213 bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
1214 {
1215     switch (param)
1216     {
1217         case EN_SETFOCUS:
1218         case EN_KILLFOCUS:
1219             {
1220                 wxFocusEvent event(param == EN_KILLFOCUS ? wxEVT_KILL_FOCUS
1221                                                          : wxEVT_SET_FOCUS,
1222                                    m_windowId);
1223                 event.SetEventObject( this );
1224                 GetEventHandler()->ProcessEvent(event);
1225             }
1226             break;
1227
1228         case EN_CHANGE:
1229             {
1230                 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, m_windowId);
1231                 InitCommandEvent(event);
1232                 event.SetString(GetValue());
1233                 ProcessCommand(event);
1234             }
1235             break;
1236
1237         case EN_MAXTEXT:
1238             // the text size limit has been hit - increase it
1239             if ( !AdjustSpaceLimit() )
1240             {
1241                 wxCommandEvent event(wxEVT_COMMAND_TEXT_MAXLEN, m_windowId);
1242                 InitCommandEvent(event);
1243                 event.SetString(GetValue());
1244                 ProcessCommand(event);
1245             }
1246             break;
1247
1248             // the other notification messages are not processed
1249         case EN_UPDATE:
1250         case EN_ERRSPACE:
1251         case EN_HSCROLL:
1252         case EN_VSCROLL:
1253             return FALSE;
1254         default:
1255             return FALSE;
1256     }
1257
1258     // processed
1259     return TRUE;
1260 }
1261
1262 WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
1263 #if wxUSE_CTL3D
1264                                WXUINT message,
1265                                WXWPARAM wParam,
1266                                WXLPARAM lParam
1267 #else
1268                                WXUINT WXUNUSED(message),
1269                                WXWPARAM WXUNUSED(wParam),
1270                                WXLPARAM WXUNUSED(lParam)
1271 #endif
1272     )
1273 {
1274 #if wxUSE_CTL3D
1275     if ( m_useCtl3D )
1276     {
1277         HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
1278         return (WXHBRUSH) hbrush;
1279     }
1280 #endif // wxUSE_CTL3D
1281
1282     HDC hdc = (HDC)pDC;
1283     if (GetParent()->GetTransparentBackground())
1284         SetBkMode(hdc, TRANSPARENT);
1285     else
1286         SetBkMode(hdc, OPAQUE);
1287
1288     wxColour colBack = GetBackgroundColour();
1289
1290     if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
1291         colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
1292
1293     ::SetBkColor(hdc, wxColourToRGB(colBack));
1294     ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
1295
1296     wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
1297
1298     return (WXHBRUSH)brush->GetResourceHandle();
1299 }
1300
1301 // In WIN16, need to override normal erasing because
1302 // Ctl3D doesn't use the wxWindows background colour.
1303 #ifdef __WIN16__
1304 void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
1305 {
1306     wxColour col(m_backgroundColour);
1307
1308 #if wxUSE_CTL3D
1309     if (m_useCtl3D)
1310         col = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
1311 #endif
1312
1313     RECT rect;
1314     ::GetClientRect(GetHwnd(), &rect);
1315
1316     COLORREF ref = wxColourToRGB(col);
1317     HBRUSH hBrush = ::CreateSolidBrush(ref);
1318     if ( !hBrush )
1319         wxLogLastError(wxT("CreateSolidBrush"));
1320
1321     HDC hdc = (HDC)event.GetDC()->GetHDC();
1322
1323     int mode = ::SetMapMode(hdc, MM_TEXT);
1324
1325     ::FillRect(hdc, &rect, hBrush);
1326     ::DeleteObject(hBrush);
1327     ::SetMapMode(hdc, mode);
1328
1329 }
1330 #endif // Win16
1331
1332 bool wxTextCtrl::AdjustSpaceLimit()
1333 {
1334 #ifndef __WIN16__
1335     unsigned int limit = ::SendMessage(GetHwnd(), EM_GETLIMITTEXT, 0, 0);
1336
1337     // HACK: we try to automatically extend the limit for the amount of text
1338     //       to allow (interactively) entering more than 64Kb of text under
1339     //       Win9x but we shouldn't reset the text limit which was previously
1340     //       set explicitly with SetMaxLength()
1341     //
1342     //       we could solve this by storing the limit we set in wxTextCtrl but
1343     //       to save space we prefer to simply test here the actual limit
1344     //       value: we consider that SetMaxLength() can only be called for
1345     //       values < 32Kb
1346     if ( limit < 0x8000 )
1347     {
1348         // we've got more text than limit set by SetMaxLength()
1349         return FALSE;
1350     }
1351
1352     unsigned int len = ::GetWindowTextLength(GetHwnd());
1353     if ( len >= limit )
1354     {
1355         limit = len + 0x8000;    // 32Kb
1356
1357 #if wxUSE_RICHEDIT
1358         if ( IsRich() )
1359         {
1360             // as a nice side effect, this also allows passing limit > 64Kb
1361             ::SendMessage(GetHwnd(), EM_EXLIMITTEXT, 0, limit);
1362         }
1363         else
1364 #endif // wxUSE_RICHEDIT
1365         {
1366             if ( limit > 0xffff )
1367             {
1368                 // this will set it to a platform-dependent maximum (much more
1369                 // than 64Kb under NT)
1370                 limit = 0;
1371             }
1372
1373             ::SendMessage(GetHwnd(), EM_LIMITTEXT, limit, 0);
1374         }
1375     }
1376 #endif // !Win16
1377
1378     // we changed the limit
1379     return TRUE;
1380 }
1381
1382 bool wxTextCtrl::AcceptsFocus() const
1383 {
1384     // we don't want focus if we can't be edited
1385     return IsEditable() && wxControl::AcceptsFocus();
1386 }
1387
1388 wxSize wxTextCtrl::DoGetBestSize() const
1389 {
1390     int cx, cy;
1391     wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
1392
1393     int wText = DEFAULT_ITEM_WIDTH;
1394
1395     int hText = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
1396     if ( m_windowStyle & wxTE_MULTILINE )
1397     {
1398         hText *= wxMax(GetNumberOfLines(), 5);
1399     }
1400     //else: for single line control everything is ok
1401
1402     return wxSize(wText, hText);
1403 }
1404
1405 // ----------------------------------------------------------------------------
1406 // standard handlers for standard edit menu events
1407 // ----------------------------------------------------------------------------
1408
1409 void wxTextCtrl::OnCut(wxCommandEvent& WXUNUSED(event))
1410 {
1411     Cut();
1412 }
1413
1414 void wxTextCtrl::OnCopy(wxCommandEvent& WXUNUSED(event))
1415 {
1416     Copy();
1417 }
1418
1419 void wxTextCtrl::OnPaste(wxCommandEvent& WXUNUSED(event))
1420 {
1421     Paste();
1422 }
1423
1424 void wxTextCtrl::OnUndo(wxCommandEvent& WXUNUSED(event))
1425 {
1426     Undo();
1427 }
1428
1429 void wxTextCtrl::OnRedo(wxCommandEvent& WXUNUSED(event))
1430 {
1431     Redo();
1432 }
1433
1434 void wxTextCtrl::OnUpdateCut(wxUpdateUIEvent& event)
1435 {
1436     event.Enable( CanCut() );
1437 }
1438
1439 void wxTextCtrl::OnUpdateCopy(wxUpdateUIEvent& event)
1440 {
1441     event.Enable( CanCopy() );
1442 }
1443
1444 void wxTextCtrl::OnUpdatePaste(wxUpdateUIEvent& event)
1445 {
1446     event.Enable( CanPaste() );
1447 }
1448
1449 void wxTextCtrl::OnUpdateUndo(wxUpdateUIEvent& event)
1450 {
1451     event.Enable( CanUndo() );
1452 }
1453
1454 void wxTextCtrl::OnUpdateRedo(wxUpdateUIEvent& event)
1455 {
1456     event.Enable( CanRedo() );
1457 }
1458
1459 // the rest of the file only deals with the rich edit controls
1460 #if wxUSE_RICHEDIT
1461
1462 // ----------------------------------------------------------------------------
1463 // EN_LINK processing
1464 // ----------------------------------------------------------------------------
1465
1466 bool wxTextCtrl::MSWOnNotify(int WXUNUSED(idCtrl), WXLPARAM lParam, WXLPARAM *result)
1467 {
1468     NMHDR *hdr = (NMHDR* )lParam;
1469     if ( hdr->code == EN_LINK )
1470     {
1471         ENLINK *enlink = (ENLINK *)hdr;
1472
1473         switch ( enlink->msg )
1474         {
1475             case WM_SETCURSOR:
1476                 // ok, so it is hardcoded - do we really nee to customize it?
1477                 ::SetCursor(GetHcursorOf(wxCursor(wxCURSOR_HAND)));
1478                 *result = TRUE;
1479                 break;
1480
1481             case WM_MOUSEMOVE:
1482             case WM_LBUTTONDOWN:
1483             case WM_LBUTTONUP:
1484             case WM_LBUTTONDBLCLK:
1485             case WM_RBUTTONDOWN:
1486             case WM_RBUTTONUP:
1487             case WM_RBUTTONDBLCLK:
1488                 // send a mouse event
1489                 {
1490                     static const wxEventType eventsMouse[] =
1491                     {
1492                         wxEVT_MOTION,
1493                         wxEVT_LEFT_DOWN,
1494                         wxEVT_LEFT_UP,
1495                         wxEVT_LEFT_DCLICK,
1496                         wxEVT_RIGHT_DOWN,
1497                         wxEVT_RIGHT_UP,
1498                         wxEVT_RIGHT_DCLICK,
1499                     };
1500
1501                     // the event ids are consecutive
1502                     wxMouseEvent
1503                         evtMouse(eventsMouse[enlink->msg - WM_MOUSEMOVE]);
1504
1505                     InitMouseEvent(evtMouse,
1506                                    GET_X_LPARAM(enlink->lParam),
1507                                    GET_Y_LPARAM(enlink->lParam),
1508                                    enlink->wParam);
1509
1510                     wxTextUrlEvent event(m_windowId, evtMouse,
1511                                          enlink->chrg.cpMin,
1512                                          enlink->chrg.cpMax);
1513
1514                     InitCommandEvent(event);
1515
1516                     *result = ProcessCommand(event);
1517                 }
1518                 break;
1519         }
1520
1521         return TRUE;
1522     }
1523
1524     // not processed
1525     return FALSE;
1526 }
1527
1528 // ----------------------------------------------------------------------------
1529 // colour setting for the rich edit controls
1530 // ----------------------------------------------------------------------------
1531
1532 bool wxTextCtrl::SetBackgroundColour(const wxColour& colour)
1533 {
1534     if ( !wxTextCtrlBase::SetBackgroundColour(colour) )
1535     {
1536         // colour didn't really change
1537         return FALSE;
1538     }
1539
1540     if ( IsRich() )
1541     {
1542         // rich edit doesn't use WM_CTLCOLOR, hence we need to send
1543         // EM_SETBKGNDCOLOR additionally
1544         ::SendMessage(GetHwnd(), EM_SETBKGNDCOLOR, 0, wxColourToRGB(colour));
1545     }
1546
1547     return TRUE;
1548 }
1549
1550 bool wxTextCtrl::SetForegroundColour(const wxColour& colour)
1551 {
1552     if ( !wxTextCtrlBase::SetForegroundColour(colour) )
1553     {
1554         // colour didn't really change
1555         return FALSE;
1556     }
1557
1558     if ( IsRich() )
1559     {
1560         // change the colour of everything
1561         CHARFORMAT cf;
1562         wxZeroMemory(cf);
1563         cf.cbSize = sizeof(cf);
1564         cf.dwMask = CFM_COLOR;
1565         cf.crTextColor = wxColourToRGB(colour);
1566         ::SendMessage(GetHwnd(), EM_SETCHARFORMAT, SCF_ALL, (LPARAM)&cf);
1567     }
1568
1569     return TRUE;
1570 }
1571
1572 // ----------------------------------------------------------------------------
1573 // styling support for rich edit controls
1574 // ----------------------------------------------------------------------------
1575
1576 bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
1577 {
1578     if ( !IsRich() )
1579     {
1580         // can't do it with normal text control
1581         return FALSE;
1582     }
1583
1584     // the richedit 1.0 doesn't handle setting background colour, so don't
1585     // even try to do anything if it's the only thing we want to change
1586     if ( m_verRichEdit == 1 && !style.HasFont() && !style.HasTextColour() )
1587     {
1588         // nothing to do: return TRUE if there was really nothing to do and
1589         // FALSE if we failed to set bg colour
1590         return !style.HasBackgroundColour();
1591     }
1592
1593     // order the range if needed
1594     if ( start > end )
1595     {
1596         long tmp = start;
1597         start = end;
1598         end = tmp;
1599     }
1600
1601     // we can only change the format of the selection, so select the range we
1602     // want and restore the old selection later
1603     long startOld, endOld;
1604     GetSelection(&startOld, &endOld);
1605
1606     // but do we really have to change the selection?
1607     bool changeSel = start != startOld || end != endOld;
1608
1609     if ( changeSel )
1610     {
1611         DoSetSelection(start, end, FALSE /* don't scroll caret into view */);
1612     }
1613
1614     // initialize CHARFORMAT struct
1615 #if wxUSE_RICHEDIT2
1616     CHARFORMAT2 cf;
1617 #else
1618     CHARFORMAT cf;
1619 #endif
1620
1621     wxZeroMemory(cf);
1622
1623     // we can't use CHARFORMAT2 with RichEdit 1.0, so pretend it is a simple
1624     // CHARFORMAT in that case
1625 #if wxUSE_RICHEDIT2
1626     if ( m_verRichEdit == 1 )
1627     {
1628         // this is the only thing the control is going to grok
1629         cf.cbSize = sizeof(CHARFORMAT);
1630     }
1631     else
1632 #endif
1633     {
1634         // CHARFORMAT or CHARFORMAT2
1635         cf.cbSize = sizeof(cf);
1636     }
1637
1638     if ( style.HasFont() )
1639     {
1640         // VZ: CFM_CHARSET doesn't seem to do anything at all in RichEdit 2.0
1641         //     but using it doesn't seem to hurt neither so leaving it for now
1642
1643         cf.dwMask |= CFM_FACE | CFM_SIZE | CFM_CHARSET |
1644                      CFM_ITALIC | CFM_BOLD | CFM_UNDERLINE;
1645
1646         // fill in data from LOGFONT but recalculate lfHeight because we need
1647         // the real height in twips and not the negative number which
1648         // wxFillLogFont() returns (this is correct in general and works with
1649         // the Windows font mapper, but not here)
1650         LOGFONT lf;
1651         wxFillLogFont(&lf, &style.GetFont());
1652         cf.yHeight = 20*style.GetFont().GetPointSize(); // 1 pt = 20 twips
1653         cf.bCharSet = lf.lfCharSet;
1654         cf.bPitchAndFamily = lf.lfPitchAndFamily;
1655         wxStrncpy( cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName) );
1656
1657         // also deal with underline/italic/bold attributes: note that we must
1658         // always set CFM_ITALIC &c bits in dwMask, even if we don't set the
1659         // style to allow clearing it
1660         if ( lf.lfItalic )
1661         {
1662             cf.dwEffects |= CFE_ITALIC;
1663         }
1664
1665         if ( lf.lfWeight == FW_BOLD )
1666         {
1667             cf.dwEffects |= CFE_BOLD;
1668         }
1669
1670         if ( lf.lfUnderline )
1671         {
1672             cf.dwEffects |= CFE_UNDERLINE;
1673         }
1674
1675         // strikeout fonts are not supported by wxWindows
1676     }
1677
1678     if ( style.HasTextColour() )
1679     {
1680         cf.dwMask |= CFM_COLOR;
1681         cf.crTextColor = wxColourToRGB(style.GetTextColour());
1682     }
1683
1684 #if wxUSE_RICHEDIT2
1685     if ( m_verRichEdit != 1 && style.HasBackgroundColour() )
1686     {
1687         cf.dwMask |= CFM_BACKCOLOR;
1688         cf.crBackColor = wxColourToRGB(style.GetBackgroundColour());
1689     }
1690 #endif // wxUSE_RICHEDIT2
1691
1692     // do format the selection
1693     bool ok = ::SendMessage(GetHwnd(), EM_SETCHARFORMAT,
1694                             SCF_SELECTION, (LPARAM)&cf) != 0;
1695     if ( !ok )
1696     {
1697         wxLogDebug(_T("SendMessage(EM_SETCHARFORMAT, SCF_SELECTION) failed"));
1698     }
1699
1700     if ( changeSel )
1701     {
1702         // restore the original selection
1703         DoSetSelection(startOld, endOld, FALSE);
1704     }
1705
1706     return ok;
1707 }
1708
1709 // ----------------------------------------------------------------------------
1710 // wxRichEditModule
1711 // ----------------------------------------------------------------------------
1712
1713 bool wxRichEditModule::OnInit()
1714 {
1715     // don't do anything - we will load it when needed
1716     return TRUE;
1717 }
1718
1719 void wxRichEditModule::OnExit()
1720 {
1721     for ( int i = 0; i < WXSIZEOF(ms_hRichEdit); i++ )
1722     {
1723         if ( ms_hRichEdit[i] )
1724         {
1725             ::FreeLibrary(ms_hRichEdit[i]);
1726         }
1727     }
1728 }
1729
1730 /* static */
1731 bool wxRichEditModule::Load(int version)
1732 {
1733     // we don't support loading richedit 3.0 as I don't know how to distinguish
1734     // it from 2.0 anyhow
1735     wxCHECK_MSG( version == 1 || version == 2, FALSE,
1736                  _T("incorrect richedit control version requested") );
1737
1738     // make it the index in the array
1739     version--;
1740
1741     if ( ms_hRichEdit[version] == (HINSTANCE)-1 )
1742     {
1743         // we had already tried to load it and failed
1744         return FALSE;
1745     }
1746
1747     if ( ms_hRichEdit[version] )
1748     {
1749         // we've already got this one
1750         return TRUE;
1751     }
1752
1753     wxString dllname = version ? _T("riched20") : _T("riched32");
1754     dllname += _T(".dll");
1755
1756     ms_hRichEdit[version] = ::LoadLibrary(dllname);
1757
1758     if ( !ms_hRichEdit[version] )
1759     {
1760         wxLogSysError(_("Could not load Rich Edit DLL '%s'"), dllname.c_str());
1761
1762         ms_hRichEdit[version] = (HINSTANCE)-1;
1763
1764         return FALSE;
1765     }
1766
1767     return TRUE;
1768 }
1769
1770 #endif // wxUSE_RICHEDIT
1771
1772 #endif // wxUSE_TEXTCTRL