dlls/riched20/editor.c

   1 /*
   2  * RichEdit - functions dealing with editor object
   3  *
   4  * Copyright 2004 by Krzysztof Foltman
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 /*
  22   API implementation status:
  23
  24   Messages (ANSI versions not done yet)
  25   - EM_AUTOURLDETECT 2.0
  26   - EM_CANPASTE
  27   + EM_CANREDO 2.0
  28   + EM_CANUNDO
  29   - EM_CHARFROMPOS
  30   - EM_DISPLAYBAND
  31   + EM_EMPTYUNDOBUFFER
  32   + EM_EXGETSEL
  33   - EM_EXLIMITTEXT
  34   - EM_EXLINEFROMCHAR
  35   + EM_EXSETSEL
  36   - EM_FINDTEXT
  37   - EM_FINDTEXTEX
  38   - EM_FINDWORDBREAK
  39   - EM_FMTLINES
  40   - EM_FORMATRANGE
  41   - EM_GETCHARFORMAT (partly done)
  42   + EM_GETEVENTMASK
  43   - EM_GETFIRSTVISIBLELINE
  44   - EM_GETIMECOLOR 1.0asian
  45   - EM_GETIMECOMPMODE 2.0
  46   - EM_GETIMEOPTIONS 1.0asian
  47   - EM_GETIMESTATUS
  48   - EM_GETLANGOPTIONS 2.0
  49   - EM_GETLIMITTEXT
  50   - EM_GETLINE
  51   - EM_GETLINECOUNT   returns number of rows, not of paragraphs
  52   + EM_GETMODIFY
  53   - EM_GETOLEINTERFACE
  54   - EM_GETOPTIONS
  55   + EM_GETPARAFORMAT
  56   - EM_GETPUNCTUATION 1.0asian
  57   - EM_GETRECT
  58   - EM_GETREDONAME 2.0
  59   + EM_GETSEL
  60   + EM_GETSELTEXT (ANSI&Unicode)
  61 ! - EM_GETTHUMB
  62   - EM_GETTEXTMODE 2.0
  63 ? + EM_GETTEXTRANGE (ANSI&Unicode)
  64   - EM_GETUNDONAME
  65   - EM_GETWORDBREAKPROC
  66   - EM_GETWORDBREAKPROCEX
  67   - EM_GETWORDWRAPMODE 1.0asian
  68   - EM_HIDESELECTION
  69   - EM_LIMITTEXT
  70   - EM_LINEFROMCHAR
  71   - EM_LINEINDEX
  72   - EM_LINELENGTH
  73   - EM_LINESCROLL
  74   - EM_PASTESPECIAL
  75   - EM_POSFROMCHARS
  76   - EM_REDO 2.0
  77   - EM_REQUESTRESIZE
  78   + EM_REPLACESEL (proper style?) ANSI&Unicode
  79   - EM_SCROLL
  80   - EM_SCROLLCARET
  81   - EM_SELECTIONTYPE
  82   + EM_SETBKGNDCOLOR
  83   - EM_SETCHARFORMAT (partly done, no ANSI)
  84   + EM_SETEVENTMASK (few notifications supported)
  85   - EM_SETIMECOLOR 1.0asian
  86   - EM_SETIMEOPTIONS 1.0asian
  87   - EM_SETLANGOPTIONS 2.0
  88   - EM_SETLIMITTEXT
  89   + EM_SETMODIFY (not sure if implementation is correct)
  90   - EM_SETOLECALLBACK
  91   - EM_SETOPTIONS
  92   + EM_SETPARAFORMAT
  93   - EM_SETPUNCTUATION 1.0asian
  94   + EM_SETREADONLY no beep on modification attempt
  95   - EM_SETRECT
  96   - EM_SETRECTNP (EM_SETRECT without repainting) - not supported in RICHEDIT
  97   + EM_SETSEL
  98   - EM_SETTARGETDEVICE
  99   - EM_SETTEXTMODE 2.0
 100   - EM_SETUNDOLIMIT 2.0
 101   - EM_SETWORDBREAKPROC
 102   - EM_SETWORDBREAKPROCEX
 103   - EM_SETWORDWRAPMODE 1.0asian
 104   - EM_STOPGROUPTYPING 2.0
 105   - EM_STREAMIN
 106   - EM_STREAMOUT
 107   - EM_UNDO
 108   + WM_CHAR
 109   + WM_CLEAR
 110   + WM_COPY
 111   + WM_CUT
 112   + WM_GETDLGCODE (the current implementation is incomplete)
 113   + WM_GETTEXT (ANSI&Unicode)
 114   + WM_GETTEXTLENGTH (ANSI version sucks)
 115   + WM_PASTE
 116   - WM_SETFONT
 117   + WM_SETTEXT (resets undo stack !) (proper style?) ANSI&Unicode
 118   - WM_STYLECHANGING
 119   - WM_STYLECHANGED (things like read-only flag)
 120   - WM_UNICHAR
 121
 122   Notifications
 123
 124   * EN_CHANGE (sent from the wrong place)
 125   - EN_CORRECTTEXT
 126   - EN_DROPFILES
 127   - EN_ERRSPACE
 128   - EN_HSCROLL
 129   - EN_IMECHANGE
 130   + EN_KILLFOCUS
 131   - EN_LINK
 132   - EN_MAXTEXT
 133   - EN_MSGFILTER
 134   - EN_OLEOPFAILED
 135   - EN_PROTECTED
 136   - EN_REQUESTRESIZE
 137   - EN_SAVECLIPBOARD
 138   + EN_SELCHANGE
 139   + EN_SETFOCUS
 140   - EN_STOPNOUNDO
 141   * EN_UPDATE (sent from the wrong place)
 142   - EN_VSCROLL
 143
 144   Styles
 145
 146   - ES_AUTOHSCROLL
 147   - ES_AUTOVSCROLL
 148   - ES_CENTER
 149   - ES_DISABLENOSCROLL (scrollbar is always visible)
 150   - ES_EX_NOCALLOLEINIT
 151   - ES_LEFT
 152   - ES_MULTILINE (currently single line controls aren't supported)
 153   - ES_NOIME
 154   - ES_READONLY (I'm not sure if beeping is the proper behaviour)
 155   - ES_RIGHT
 156   - ES_SAVESEL
 157   - ES_SELFIME
 158   - ES_SUNKEN
 159   - ES_VERTICAL
 160   - ES_WANTRETURN (don't know how to do WM_GETDLGCODE part)
 161   - WS_SETFONT
 162   - WS_HSCROLL
 163   - WS_VSCROLL
 164 */
 165
 166 /*
 167  * RICHED20 TODO (incomplete):
 168  *
 169  * - font caching
 170  * - add remaining CHARFORMAT/PARAFORMAT fields
 171  * - right/center align should strip spaces from the beginning
 172  * - more advanced navigation (Ctrl-arrows, PageUp/PageDn)
 173  * - tabs
 174  * - pictures (not just smiling faces that lack API support ;-) )
 175  * - OLE objects
 176  * - calculate heights of pictures (half-done)
 177  * - EM_STREAMIN/EM_STREAMOUT
 178  * - horizontal scrolling (not even started)
 179  * - fix scrollbars and refresh (it sucks bigtime)
 180  * - hysteresis during wrapping (related to scrollbars appearing/disappearing)
 181  * - should remember maximum row width for wrap hysteresis
 182  * - find/replace
 183  * - how to implement EM_FORMATRANGE and EM_DISPLAYBAND ? (Mission Impossible)
 184  * - italic cursor with italic fonts
 185  * - IME
 186  * - most notifications aren't sent at all (the most important ones are)
 187  * - when should EN_SELCHANGE be sent after text change ? (before/after EN_UPDATE?)
 188  * - WM_SETTEXT may use wrong style (but I'm 80% sure it's OK)
 189  * - EM_GETCHARFORMAT with SCF_SELECTION may not behave 100% like in original (but very close)
 190  * - bugs in end-of-text handling (the gray bar) could get me in jail ;-)
 191  * - determination of row size
 192  * - end-of-paragraph marks should be of reasonable size
 193  *
 194  * Bugs that are probably fixed, but not so easy to verify:
 195  * - EN_UPDATE/EN_CHANGE are handled very incorrectly (should be OK now)
 196  * - undo for ME_JoinParagraphs doesn't store paragraph format ? (it does)
 197  * - check/fix artificial EOL logic (bCursorAtEnd, hardly logical)
 198  * - caret shouldn't be displayed when selection isn't empty
 199  * - check refcounting in style management functions (looks perfect now, but no bugs is suspicious)
 200  * - undo for setting default format (done, might be buggy)
 201  * - styles might be not released properly (looks like they work like charm, but who knows?
 202  *
 203  */
 204
 205 #include "editor.h"
 206 #include <ole2.h>
 207 #include <richole.h>
 208 #include <winreg.h>
 209 #define NO_SHLWAPI_STREAM
 210 #include <shlwapi.h>
 211
 212 #include "rtf.h"
 213
 214 WINE_DEFAULT_DEBUG_CHANNEL(richedit);
 215
 216 int me_debug = 0;
 217 HANDLE me_heap = NULL;
 218
 219 ME_TextBuffer *ME_MakeText() {
 220
 221   ME_TextBuffer *buf = ALLOC_OBJ(ME_TextBuffer);
 222
 223   ME_DisplayItem *p1 = ME_MakeDI(diTextStart);
 224   ME_DisplayItem *p2 = ME_MakeDI(diTextEnd);
 225
 226   p1->prev = NULL;
 227   p1->next = p2;
 228   p2->prev = p1;
 229   p2->next = NULL;
 230   p1->member.para.next_para = p2;
 231   p2->member.para.prev_para = p1;
 232   p2->member.para.nCharOfs = 0;
 233
 234   buf->pFirst = p1;
 235   buf->pLast = p2;
 236   buf->pCharStyle = NULL;
 237
 238   return buf;
 239 }
 240
 241 #define STREAMIN_BUFFER_SIZE 4096 /* M$ compatibility */
 242
 243 static LRESULT ME_StreamInText(ME_TextEditor *editor, DWORD dwFormat, EDITSTREAM *stream, ME_Style *style)
 244 {
 245   BYTE buffer[STREAMIN_BUFFER_SIZE+1];
 246   WCHAR wszText[STREAMIN_BUFFER_SIZE+1];
 247
 248   TRACE("%08lx %p\n", dwFormat, stream);
 249   stream->dwError = 0;
 250
 251   do {
 252     long nDataSize = 0, nWideChars = 0;
 253     stream->dwError = stream->pfnCallback(stream->dwCookie,
 254       (dwFormat & SF_UNICODE ? (BYTE *)wszText : buffer),
 255       STREAMIN_BUFFER_SIZE, &nDataSize);
 256
 257     if (stream->dwError)
 258       break;
 259     if (!nDataSize)
 260       break;
 261
 262     if (!(dwFormat & SF_UNICODE))
 263     {
 264       /* FIXME? this is doomed to fail on true MBCS like UTF-8, luckily they're unlikely to be used as CP_ACP */
 265       nWideChars = MultiByteToWideChar(CP_ACP, 0, buffer, nDataSize, wszText, STREAMIN_BUFFER_SIZE);
 266     }
 267     else
 268       nWideChars = nDataSize>>1;
 269     ME_InsertTextFromCursor(editor, 0, wszText, nWideChars, style);
 270     if (nDataSize<STREAMIN_BUFFER_SIZE)
 271       break;
 272   } while(1);
 273   ME_CommitUndo(editor);
 274   ME_Repaint(editor);
 275   return 0;
 276 }
 277
 278 void ME_RTFCharAttrHook(RTF_Info *info)
 279 {
 280   CHARFORMAT2A fmt;
 281   fmt.cbSize = sizeof(fmt);
 282   fmt.dwMask = 0;
 283
 284   switch(info->rtfMinor)
 285   {
 286     case rtfPlain:
 287       FIXME("rtfPlain: how plain should it be ?\n");
 288       fmt.dwMask = CFM_BOLD | CFM_ITALIC | CFM_UNDERLINE | CFM_STRIKEOUT | CFM_COLOR | CFM_BACKCOLOR;
 289       fmt.dwEffects = CFE_AUTOCOLOR | CFE_AUTOBACKCOLOR;
 290       break;
 291     case rtfBold:
 292       fmt.dwMask = CFM_BOLD;
 293       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 294       break;
 295     case rtfItalic:
 296       fmt.dwMask = CFM_ITALIC;
 297       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 298       break;
 299     case rtfUnderline:
 300       fmt.dwMask = CFM_UNDERLINE;
 301       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 302       break;
 303     case rtfStrikeThru:
 304       fmt.dwMask = CFM_STRIKEOUT;
 305       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 306       break;
 307     case rtfBackColor:
 308       fmt.dwMask = CFM_BACKCOLOR;
 309       fmt.dwEffects = 0;
 310       if (info->rtfParam == 0)
 311         fmt.dwEffects = CFE_AUTOBACKCOLOR;
 312       else if (info->rtfParam != rtfNoParam)
 313       {
 314         RTFColor *c = RTFGetColor(info, info->rtfParam);
 315         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 316       }
 317       break;
 318     case rtfForeColor:
 319       fmt.dwMask = CFM_COLOR;
 320       fmt.dwEffects = 0;
 321       if (info->rtfParam == 0)
 322         fmt.dwEffects = CFE_AUTOCOLOR;
 323       else if (info->rtfParam != rtfNoParam)
 324       {
 325         RTFColor *c = RTFGetColor(info, info->rtfParam);
 326         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 327       }
 328       break;
 329     case rtfFontNum:
 330       if (info->rtfParam != rtfNoParam)
 331       {
 332         RTFFont *f = RTFGetFont(info, info->rtfParam);
 333         if (f)
 334         {
 335           strncpy(fmt.szFaceName, f->rtfFName, sizeof(fmt.szFaceName)-1);
 336           fmt.szFaceName[sizeof(fmt.szFaceName)-1] = '\0';
 337           fmt.dwMask = CFM_FACE;
 338         }
 339       }
 340       break;
 341     case rtfFontSize:
 342       fmt.dwMask = CFM_SIZE;
 343       if (info->rtfParam != rtfNoParam)
 344         fmt.yHeight = info->rtfParam*10;
 345       break;
 346   }
 347   if (fmt.dwMask) {
 348     RTFFlushOutputBuffer(info);
 349     SendMessageW(info->hwndEdit, EM_SETCHARFORMAT, SCF_SELECTION, (LPARAM)&fmt);
 350   }
 351 }
 352
 353 void ME_RTFParAttrHook(RTF_Info *info)
 354 {
 355   PARAFORMAT2 fmt;
 356   fmt.cbSize = sizeof(fmt);
 357   fmt.dwMask = 0;
 358
 359   switch(info->rtfMinor)
 360   {
 361   case rtfParDef: /* I'm not 100% sure what does it do, but I guess it restores default paragraph attributes */
 362     fmt.dwMask = PFM_ALIGNMENT;
 363     fmt.wAlignment = PFA_LEFT;
 364     break;
 365   case rtfQuadLeft:
 366   case rtfQuadJust:
 367     fmt.dwMask = PFM_ALIGNMENT;
 368     fmt.wAlignment = PFA_LEFT;
 369     break;
 370   case rtfQuadRight:
 371     fmt.dwMask = PFM_ALIGNMENT;
 372     fmt.wAlignment = PFA_RIGHT;
 373     break;
 374   case rtfQuadCenter:
 375     fmt.dwMask = PFM_ALIGNMENT;
 376     fmt.wAlignment = PFA_CENTER;
 377     break;
 378   }
 379   if (fmt.dwMask) {
 380     RTFFlushOutputBuffer(info);
 381     SendMessageW(info->hwndEdit, EM_SETPARAFORMAT, 0, (LPARAM)&fmt);
 382   }
 383 }
 384
 385 void ME_RTFReadHook(RTF_Info *info) {
 386   switch(info->rtfClass)
 387   {
 388     case rtfControl:
 389       switch(info->rtfMajor)
 390       {
 391         case rtfCharAttr:
 392           ME_RTFCharAttrHook(info);
 393           break;
 394         case rtfParAttr:
 395           ME_RTFParAttrHook(info);
 396           break;
 397       }
 398       break;
 399   }
 400 }
 401
 402 static LRESULT ME_StreamIn(ME_TextEditor *editor, DWORD format, EDITSTREAM *stream)
 403 {
 404   RTF_Info parser;
 405   ME_Style *style;
 406   int from, to, to2, nUndoMode;
 407   ME_UndoItem *pUI;
 408
 409   TRACE("%p %p\n", stream, editor->hWnd);
 410
 411   ME_GetSelection(editor, &from, &to);
 412   if (format & SFF_SELECTION) {
 413     style = ME_GetSelectionInsertStyle(editor);
 414
 415     ME_InternalDeleteText(editor, from, to-from);
 416   }
 417   else {
 418     style = editor->pBuffer->pDefaultStyle;
 419     ME_AddRefStyle(style);
 420     SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 421     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
 422     from = to = 0;
 423     ME_ClearTempStyle(editor);
 424   }
 425
 426   nUndoMode = editor->nUndoMode;
 427   editor->nUndoMode = umIgnore;
 428   if (format & SF_RTF) {
 429     /* setup the RTF parser */
 430     memset(&parser, 0, sizeof parser);
 431     RTFSetEditStream(&parser, stream);
 432     parser.rtfFormat = format&(SF_TEXT|SF_RTF);
 433     parser.hwndEdit = editor->hWnd;
 434     WriterInit(&parser);
 435     RTFInit(&parser);
 436     RTFSetReadHook(&parser, ME_RTFReadHook);
 437     BeginFile(&parser);
 438
 439     /* do the parsing */
 440     RTFRead(&parser);
 441     RTFFlushOutputBuffer(&parser);
 442   }
 443   else if (format & SF_TEXT)
 444     ME_StreamInText(editor, format, stream, style);
 445   else
 446     ERR("EM_STREAMIN without SF_TEXT or SF_RTF\n");
 447   ME_GetSelection(editor, &to, &to2);
 448   /* put the cursor at the top */
 449   if (!(format & SFF_SELECTION))
 450     SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 451   else
 452   {
 453     /* FIXME where to put cursor now ? */
 454   }
 455
 456   editor->nUndoMode = nUndoMode;
 457   pUI = ME_AddUndoItem(editor, diUndoDeleteRun, NULL);
 458   TRACE("from %d to %d\n", from, to);
 459   if (pUI && from < to)
 460   {
 461     pUI->nStart = from;
 462     pUI->nLen = to-from;
 463   }
 464   ME_CommitUndo(editor);
 465   ME_ReleaseStyle(style);
 466
 467   return 0;
 468 }
 469
 470
 471 ME_DisplayItem *
 472 ME_FindItemAtOffset(ME_TextEditor *editor, ME_DIType nItemType, int nOffset, int *nItemOffset)
 473 {
 474   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
 475
 476   while (item && item->member.para.next_para->member.para.nCharOfs <= nOffset)
 477     item = ME_FindItemFwd(item, diParagraph);
 478
 479   if (!item)
 480     return item;
 481
 482   nOffset -= item->member.para.nCharOfs;
 483   if (nItemType == diParagraph) {
 484     if (nItemOffset)
 485       *nItemOffset = nOffset;
 486     return item;
 487   }
 488
 489   do {
 490     item = ME_FindItemFwd(item, diRun);
 491   } while (item && (item->member.run.nCharOfs + ME_StrLen(item->member.run.strText) <= nOffset));
 492   if (item) {
 493     nOffset -= item->member.run.nCharOfs;
 494     if (nItemOffset)
 495       *nItemOffset = nOffset;
 496   }
 497   return item;
 498 }
 499
 500
 501 ME_TextEditor *ME_MakeEditor(HWND hWnd) {
 502   ME_TextEditor *ed = ALLOC_OBJ(ME_TextEditor);
 503   HDC hDC;
 504   int i;
 505   ed->hWnd = hWnd;
 506   ed->pBuffer = ME_MakeText();
 507   hDC = GetDC(hWnd);
 508   ME_MakeFirstParagraph(hDC, ed->pBuffer);
 509   ReleaseDC(hWnd, hDC);
 510   ed->bCaretShown = FALSE;
 511   ed->nCursors = 3;
 512   ed->pCursors = ALLOC_N_OBJ(ME_Cursor, ed->nCursors);
 513   ed->pCursors[0].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
 514   ed->pCursors[0].nOffset = 0;
 515   ed->pCursors[1].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
 516   ed->pCursors[1].nOffset = 0;
 517   ed->nLastTotalLength = ed->nTotalLength = 0;
 518   ed->nScrollPos = 0;
 519   ed->nUDArrowX = -1;
 520   ed->nSequence = 0;
 521   ed->rgbBackColor = -1;
 522   ed->bCaretAtEnd = FALSE;
 523   ed->nEventMask = 0;
 524   ed->nModifyStep = 0;
 525   ed->pUndoStack = ed->pRedoStack = NULL;
 526   ed->nUndoMode = umAddToUndo;
 527   ed->nParagraphs = 1;
 528   ed->nLastSelStart = ed->nLastSelEnd = 0;
 529   for (i=0; i<HFONT_CACHE_SIZE; i++)
 530   {
 531     ed->pFontCache[i].nRefs = 0;
 532     ed->pFontCache[i].nAge = 0;
 533     ed->pFontCache[i].hFont = NULL;
 534   }
 535   ME_CheckCharOffsets(ed);
 536   return ed;
 537 }
 538
 539 typedef struct tagME_GlobalDestStruct
 540 {
 541   HGLOBAL hData;
 542   int nLength;
 543 } ME_GlobalDestStruct;
 544
 545 static DWORD CALLBACK ME_AppendToHGLOBAL(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 546 {
 547   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 548   int nMaxSize;
 549   BYTE *pDest;
 550
 551   nMaxSize = GlobalSize(pData->hData);
 552   if (pData->nLength+cb+1 >= cb)
 553   {
 554     /* round up to 2^17 */
 555     int nNewSize = (((nMaxSize+cb+1)|0x1FFFF)+1) & 0xFFFE0000;
 556     pData->hData = GlobalReAlloc(pData->hData, nNewSize, 0);
 557   }
 558   pDest = (BYTE *)GlobalLock(pData->hData);
 559   memcpy(pDest + pData->nLength, lpBuff, cb);
 560   pData->nLength += cb;
 561   pDest[pData->nLength] = '\0';
 562   GlobalUnlock(pData->hData);
 563   *pcb = cb;
 564
 565   return 0;
 566 }
 567
 568 static DWORD CALLBACK ME_ReadFromHGLOBALUnicode(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 569 {
 570   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 571   int i;
 572   WORD *pSrc, *pDest;
 573
 574   cb = cb >> 1;
 575   pDest = (WORD *)lpBuff;
 576   pSrc = (WORD *)GlobalLock(pData->hData);
 577   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
 578     pDest[i] = pSrc[pData->nLength+i];
 579   }
 580   pData->nLength += i;
 581   *pcb = 2*i;
 582   GlobalUnlock(pData->hData);
 583   return 0;
 584 }
 585
 586 static DWORD CALLBACK ME_ReadFromHGLOBALRTF(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 587 {
 588   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 589   int i;
 590   BYTE *pSrc, *pDest;
 591
 592   pDest = lpBuff;
 593   pSrc = (BYTE *)GlobalLock(pData->hData);
 594   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
 595     pDest[i] = pSrc[pData->nLength+i];
 596   }
 597   pData->nLength += i;
 598   *pcb = i;
 599   GlobalUnlock(pData->hData);
 600   return 0;
 601 }
 602
 603 void ME_DestroyEditor(ME_TextEditor *editor)
 604 {
 605   ME_DisplayItem *pFirst = editor->pBuffer->pFirst;
 606   ME_DisplayItem *p = pFirst, *pNext = NULL;
 607   int i;
 608
 609   ME_ClearTempStyle(editor);
 610   ME_EmptyUndoStack(editor);
 611   while(p) {
 612     pNext = p->next;
 613     ME_DestroyDisplayItem(p);
 614     p = pNext;
 615   }
 616   ME_ReleaseStyle(editor->pBuffer->pDefaultStyle);
 617   for (i=0; i<HFONT_CACHE_SIZE; i++)
 618   {
 619     if (editor->pFontCache[i].hFont)
 620       DeleteObject(editor->pFontCache[i].hFont);
 621   }
 622
 623   FREE_OBJ(editor);
 624 }
 625
 626 #define UNSUPPORTED_MSG(e) \
 627   case e: \
 628     FIXME(#e ": stub\n"); \
 629     return DefWindowProcW(hWnd, msg, wParam, lParam);
 630
 631 /******************************************************************
 632  *        RichEditANSIWndProc (RICHED20.10)
 633  */
 634 LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
 635   HDC hDC;
 636   PAINTSTRUCT ps;
 637   SCROLLINFO si;
 638   ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
 639   TRACE("msg %d %08x %08lx\n", msg, wParam, lParam);
 640   switch(msg) {
 641
 642   UNSUPPORTED_MSG(EM_AUTOURLDETECT)
 643   UNSUPPORTED_MSG(EM_CANPASTE)
 644   UNSUPPORTED_MSG(EM_CHARFROMPOS)
 645   UNSUPPORTED_MSG(EM_DISPLAYBAND)
 646   UNSUPPORTED_MSG(EM_EXLIMITTEXT)
 647   UNSUPPORTED_MSG(EM_EXLINEFROMCHAR)
 648   UNSUPPORTED_MSG(EM_FINDTEXT)
 649   UNSUPPORTED_MSG(EM_FINDTEXTEX)
 650   UNSUPPORTED_MSG(EM_FINDWORDBREAK)
 651   UNSUPPORTED_MSG(EM_FMTLINES)
 652   UNSUPPORTED_MSG(EM_FORMATRANGE)
 653   UNSUPPORTED_MSG(EM_GETFIRSTVISIBLELINE)
 654   UNSUPPORTED_MSG(EM_GETIMECOMPMODE)
 655   /* UNSUPPORTED_MSG(EM_GETIMESTATUS) missing in Wine headers */
 656   UNSUPPORTED_MSG(EM_GETLANGOPTIONS)
 657   UNSUPPORTED_MSG(EM_GETLIMITTEXT)
 658   UNSUPPORTED_MSG(EM_GETLINE)
 659   UNSUPPORTED_MSG(EM_GETLINECOUNT)
 660   /* UNSUPPORTED_MSG(EM_GETOLEINTERFACE) separate stub */
 661   UNSUPPORTED_MSG(EM_GETOPTIONS)
 662   UNSUPPORTED_MSG(EM_GETRECT)
 663   UNSUPPORTED_MSG(EM_GETREDONAME)
 664   UNSUPPORTED_MSG(EM_GETTEXTMODE)
 665   UNSUPPORTED_MSG(EM_GETUNDONAME)
 666   UNSUPPORTED_MSG(EM_GETWORDBREAKPROC)
 667   UNSUPPORTED_MSG(EM_GETWORDBREAKPROCEX)
 668   UNSUPPORTED_MSG(EM_HIDESELECTION)
 669   UNSUPPORTED_MSG(EM_LIMITTEXT) /* also known as EM_SETLIMITTEXT */
 670   UNSUPPORTED_MSG(EM_LINEFROMCHAR)
 671   UNSUPPORTED_MSG(EM_LINEINDEX)
 672   UNSUPPORTED_MSG(EM_LINELENGTH)
 673   UNSUPPORTED_MSG(EM_LINESCROLL)
 674   UNSUPPORTED_MSG(EM_PASTESPECIAL)
 675 /*  UNSUPPORTED_MSG(EM_POSFROMCHARS) missing in Wine headers */
 676   UNSUPPORTED_MSG(EM_REQUESTRESIZE)
 677   UNSUPPORTED_MSG(EM_SCROLL)
 678   UNSUPPORTED_MSG(EM_SCROLLCARET)
 679   UNSUPPORTED_MSG(EM_SELECTIONTYPE)
 680   UNSUPPORTED_MSG(EM_SETLANGOPTIONS)
 681   UNSUPPORTED_MSG(EM_SETOLECALLBACK)
 682   UNSUPPORTED_MSG(EM_SETOPTIONS)
 683   UNSUPPORTED_MSG(EM_SETRECT)
 684   UNSUPPORTED_MSG(EM_SETRECTNP)
 685   UNSUPPORTED_MSG(EM_SETTARGETDEVICE)
 686   UNSUPPORTED_MSG(EM_SETTEXTMODE)
 687   UNSUPPORTED_MSG(EM_SETUNDOLIMIT)
 688   UNSUPPORTED_MSG(EM_SETWORDBREAKPROC)
 689   UNSUPPORTED_MSG(EM_SETWORDBREAKPROCEX)
 690   UNSUPPORTED_MSG(WM_SETFONT)
 691   UNSUPPORTED_MSG(WM_STYLECHANGING)
 692   UNSUPPORTED_MSG(WM_STYLECHANGED)
 693 /*  UNSUPPORTED_MSG(WM_UNICHAR) FIXME missing in Wine headers */
 694
 695 /* Messages specific to Richedit controls */
 696
 697   case EM_STREAMIN:
 698    return ME_StreamIn(editor, wParam, (EDITSTREAM*)lParam);
 699   case EM_STREAMOUT:
 700    return ME_StreamOut(editor, wParam, (EDITSTREAM *)lParam);
 701   case WM_GETDLGCODE:
 702   {
 703     UINT code = DLGC_WANTCHARS|DLGC_WANTARROWS;
 704     if (GetWindowLongW(hWnd, GWL_STYLE)&ES_WANTRETURN)
 705       code |= 0; /* FIXME what can we do here ? ask for messages and censor them ? */
 706     return code;
 707   }
 708   case WM_NCCREATE:
 709   {
 710     CREATESTRUCTW *pcs = (CREATESTRUCTW *)lParam;
 711     editor = ME_MakeEditor(hWnd);
 712     SetWindowLongW(hWnd, 0, (long)editor);
 713     pcs = 0; /* ignore */
 714     return TRUE;
 715   }
 716   case EM_EMPTYUNDOBUFFER:
 717     ME_EmptyUndoStack(editor);
 718     return 0;
 719   case EM_GETSEL:
 720   {
 721     ME_GetSelection(editor, (int *)wParam, (int *)lParam);
 722     if (!((wParam|lParam) & 0xFFFF0000))
 723       return (lParam<<16)|wParam;
 724     return -1;
 725   }
 726   case EM_EXGETSEL:
 727   {
 728     CHARRANGE *pRange = (CHARRANGE *)lParam;
 729     ME_GetSelection(editor, (int *)&pRange->cpMin, (int *)&pRange->cpMax);
 730     return 0;
 731   }
 732   case EM_CANUNDO:
 733     return editor->pUndoStack != NULL;
 734   case EM_CANREDO:
 735     return editor->pRedoStack != NULL;
 736   case EM_UNDO:
 737     ME_Undo(editor);
 738     return 0;
 739   case EM_REDO:
 740     ME_Redo(editor);
 741     return 0;
 742   case EM_SETSEL:
 743   {
 744     ME_SetSelection(editor, wParam, lParam);
 745     ME_Repaint(editor);
 746     ME_SendSelChange(editor);
 747     return 0;
 748   }
 749   case EM_EXSETSEL:
 750   {
 751     CHARRANGE *pRange = (CHARRANGE *)lParam;
 752     ME_SetSelection(editor, pRange->cpMin, pRange->cpMax);
 753     /* FIXME optimize */
 754     ME_Repaint(editor);
 755     ME_SendSelChange(editor);
 756     return 0;
 757   }
 758   case EM_SETBKGNDCOLOR:
 759   {
 760     LRESULT lColor = ME_GetBackColor(editor);
 761     if (wParam)
 762       editor->rgbBackColor = -1;
 763     else
 764       editor->rgbBackColor = lParam;
 765     InvalidateRect(hWnd, NULL, TRUE);
 766     UpdateWindow(hWnd);
 767     return lColor;
 768   }
 769   case EM_GETMODIFY:
 770     return editor->nModifyStep == 0 ? 0 : 1;
 771   case EM_SETMODIFY:
 772   {
 773     if (wParam)
 774       editor->nModifyStep = 0x80000000;
 775     else
 776       editor->nModifyStep = 0;
 777
 778     return 0;
 779   }
 780   case EM_SETREADONLY:
 781   {
 782     long nStyle = GetWindowLongW(hWnd, GWL_STYLE);
 783     if (wParam)
 784       nStyle |= ES_READONLY;
 785     else
 786       nStyle &= ~ES_READONLY;
 787     SetWindowLongW(hWnd, GWL_STYLE, nStyle);
 788     ME_Repaint(editor);
 789     return 0;
 790   }
 791   case EM_SETEVENTMASK:
 792     editor->nEventMask = lParam;
 793     return 0;
 794   case EM_GETEVENTMASK:
 795     return editor->nEventMask;
 796   case EM_SETCHARFORMAT:
 797   {
 798     CHARFORMAT2W buf, *p;
 799     p = ME_ToCF2W(&buf, (CHARFORMAT2W *)lParam);
 800     if (!wParam)
 801       ME_SetDefaultCharFormat(editor, p);
 802     else if (wParam == (SCF_WORD | SCF_SELECTION))
 803       FIXME("word selection not supported\n");
 804     else if (wParam == SCF_ALL)
 805       ME_SetCharFormat(editor, 0, ME_GetTextLength(editor), p);
 806     else
 807       ME_SetSelectionCharFormat(editor, p);
 808     ME_CommitUndo(editor);
 809     ME_UpdateRepaint(editor);
 810     return 0;
 811   }
 812   case EM_GETCHARFORMAT:
 813   {
 814     CHARFORMAT2W tmp;
 815     tmp.cbSize = sizeof(tmp);
 816     if (!wParam)
 817       ME_GetDefaultCharFormat(editor, &tmp);
 818     else
 819       ME_GetSelectionCharFormat(editor, &tmp);
 820     ME_CopyToCFAny((CHARFORMAT2W *)lParam, &tmp);
 821     return 0;
 822   }
 823   case EM_SETPARAFORMAT:
 824     ME_SetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
 825     ME_CommitUndo(editor);
 826     return 0;
 827   case EM_GETPARAFORMAT:
 828     ME_GetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
 829     return 0;
 830   case WM_CLEAR:
 831   {
 832     int from, to;
 833     ME_GetSelection(editor, &from, &to);
 834     ME_InternalDeleteText(editor, from, to-from);
 835     ME_CommitUndo(editor);
 836     ME_UpdateRepaint(editor);
 837     return 0;
 838   }
 839   case EM_REPLACESEL:
 840   {
 841     int from, to;
 842     ME_Style *style;
 843     LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
 844     size_t len = lstrlenW(wszText);
 845     TRACE("EM_REPLACESEL - %s\n", debugstr_w(wszText));
 846
 847     ME_GetSelection(editor, &from, &to);
 848     style = ME_GetSelectionInsertStyle(editor);
 849     ME_InternalDeleteText(editor, from, to-from);
 850     ME_InsertTextFromCursor(editor, 0, wszText, len, style);
 851     ME_ReleaseStyle(style);
 852     ME_EndToUnicode(hWnd, wszText);
 853     /* drop temporary style if line end */
 854     /* FIXME question: does abc\n mean: put abc, clear temp style, put \n? (would require a change) */
 855     if (len>0 && wszText[len-1] == '\n')
 856       ME_ClearTempStyle(editor);
 857
 858     ME_CommitUndo(editor);
 859     if (!wParam)
 860       ME_EmptyUndoStack(editor);
 861     ME_UpdateRepaint(editor);
 862     return 0;
 863   }
 864   case WM_SETTEXT:
 865   {
 866     LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
 867     TRACE("WM_SETTEXT - %s\n", (char *)(wszText)); /* debugstr_w() */
 868     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
 869     /* uses default style! */
 870     ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
 871     ME_EndToUnicode(hWnd, wszText);
 872     ME_CommitUndo(editor);
 873     ME_EmptyUndoStack(editor);
 874     ME_UpdateRepaint(editor);
 875     return 0;
 876   }
 877   case WM_PASTE:
 878   {
 879     DWORD dwFormat = 0;
 880     EDITSTREAM es;
 881     ME_GlobalDestStruct gds;
 882     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
 883     UINT cf = 0;
 884
 885     if (!OpenClipboard(hWnd))
 886       return 0;
 887     if (IsClipboardFormatAvailable(nRTFFormat))
 888       cf = nRTFFormat, dwFormat = SF_RTF;
 889     else if (IsClipboardFormatAvailable(CF_UNICODETEXT))
 890       cf = CF_UNICODETEXT, dwFormat = SF_TEXT|SF_UNICODE;
 891     else
 892       return 0;
 893
 894     gds.hData = GetClipboardData(cf);
 895     gds.nLength = 0;
 896     es.dwCookie = (DWORD)&gds;
 897     es.pfnCallback = dwFormat == SF_RTF ? ME_ReadFromHGLOBALRTF : ME_ReadFromHGLOBALUnicode;
 898     SendMessageW(hWnd, EM_STREAMIN, dwFormat|SFF_SELECTION, (LPARAM)&es);
 899
 900     CloseClipboard();
 901     return 0;
 902   }
 903   case WM_CUT:
 904   case WM_COPY:
 905   {
 906     int from, to, pars;
 907     WCHAR *data;
 908     HANDLE hData;
 909     EDITSTREAM es;
 910     ME_GlobalDestStruct gds;
 911
 912     if (!OpenClipboard(hWnd))
 913       return 0;
 914
 915     EmptyClipboard();
 916     ME_GetSelection(editor, &from, &to);
 917     pars = ME_CountParagraphsBetween(editor, from, to);
 918     hData = GlobalAlloc(GMEM_MOVEABLE, sizeof(WCHAR)*(to-from+pars+1));
 919     data = (WCHAR *)GlobalLock(hData);
 920     ME_GetTextW(editor, data, from, to-from, TRUE);
 921     GlobalUnlock(hData);
 922
 923     gds.hData = GlobalAlloc(GMEM_MOVEABLE, 0);
 924     gds.nLength = 0;
 925     es.dwCookie = (DWORD)&gds;
 926     es.pfnCallback = ME_AppendToHGLOBAL;
 927     SendMessageW(hWnd, EM_STREAMOUT, SFF_SELECTION|SF_RTF, (LPARAM)&es);
 928     GlobalReAlloc(gds.hData, gds.nLength+1, 0);
 929
 930     SetClipboardData(CF_UNICODETEXT, hData);
 931     SetClipboardData(RegisterClipboardFormatA("Rich Text Format"), gds.hData);
 932
 933     CloseClipboard();
 934     if (msg == WM_CUT)
 935     {
 936       ME_InternalDeleteText(editor, from, to-from);
 937       ME_CommitUndo(editor);
 938       ME_UpdateRepaint(editor);
 939     }
 940     return 0;
 941   }
 942   case WM_GETTEXTLENGTH:
 943     return ME_GetTextLength(editor);
 944   case WM_GETTEXT:
 945   {
 946     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
 947     tr.chrg.cpMin = 0;
 948     tr.chrg.cpMax = wParam-1;
 949     tr.lpstrText = (WCHAR *)lParam;
 950     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
 951   }
 952   case EM_GETSELTEXT:
 953   {
 954     int from, to;
 955     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
 956     ME_GetSelection(editor, &from, &to);
 957     tr.chrg.cpMin = from;
 958     tr.chrg.cpMax = to;
 959     tr.lpstrText = (WCHAR *)lParam;
 960     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
 961   }
 962   case EM_GETTEXTRANGE:
 963   {
 964     TEXTRANGEW *rng = (TEXTRANGEW *)lParam;
 965     if (IsWindowUnicode(hWnd))
 966       return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, FALSE);
 967     else
 968     {
 969       int nLen = rng->chrg.cpMax-rng->chrg.cpMin;
 970       WCHAR *p = ALLOC_N_OBJ(WCHAR, nLen+1);
 971       int nChars = ME_GetTextW(editor, p, rng->chrg.cpMin, nLen, FALSE);
 972       /* FIXME this is a potential security hole (buffer overrun)
 973          if you know more about wchar->mbyte conversion please explain
 974       */
 975       WideCharToMultiByte(CP_ACP, 0, p, nChars+1, (char *)rng->lpstrText, nLen+1, NULL, NULL);
 976       FREE_OBJ(p);
 977       return nChars;
 978     }
 979     return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, FALSE);
 980   }
 981   case WM_CREATE:
 982     ME_CommitUndo(editor);
 983     ME_WrapMarkedParagraphs(editor);
 984     ME_MoveCaret(editor);
 985     return 0;
 986   case WM_DESTROY:
 987     ME_DestroyEditor(editor);
 988     SetWindowLongW(hWnd, 0, 0);
 989     return 0;
 990   case WM_LBUTTONDOWN:
 991     SetFocus(hWnd);
 992     ME_LButtonDown(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
 993     SetCapture(hWnd);
 994     break;
 995   case WM_MOUSEMOVE:
 996     if (GetCapture() == hWnd)
 997       ME_MouseMove(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
 998     break;
 999   case WM_LBUTTONUP:
1000     if (GetCapture() == hWnd)
1001       ReleaseCapture();
1002     break;
1003   case WM_PAINT:
1004     hDC = BeginPaint(hWnd, &ps);
1005     ME_PaintContent(editor, hDC, FALSE, &ps.rcPaint);
1006     EndPaint(hWnd, &ps);
1007     break;
1008   case WM_SETFOCUS:
1009     ME_ShowCaret(editor);
1010     ME_SendOldNotify(editor, EN_SETFOCUS);
1011     return 0;
1012   case WM_KILLFOCUS:
1013     ME_HideCaret(editor);
1014     ME_SendOldNotify(editor, EN_KILLFOCUS);
1015     return 0;
1016   case WM_ERASEBKGND:
1017   {
1018     HDC hDC = (HDC)wParam;
1019     RECT rc;
1020     COLORREF rgbBG = ME_GetBackColor(editor);
1021     if (GetUpdateRect(hWnd,&rc,TRUE))
1022     {
1023       HBRUSH hbr = CreateSolidBrush(rgbBG);
1024       FillRect(hDC, &rc, hbr);
1025       DeleteObject(hbr);
1026     }
1027     return 1;
1028   }
1029   case WM_COMMAND:
1030     TRACE("editor wnd command = %d\n", LOWORD(wParam));
1031     return 0;
1032   case WM_KEYDOWN:
1033     if (ME_ArrowKey(editor, LOWORD(wParam), GetKeyState(VK_CONTROL)<0)) {
1034       ME_CommitUndo(editor);
1035       ME_EnsureVisible(editor, editor->pCursors[0].pRun);
1036       HideCaret(hWnd);
1037       ME_MoveCaret(editor);
1038       ShowCaret(hWnd);
1039       return 0;
1040     }
1041     if (GetKeyState(VK_CONTROL)<0)
1042     {
1043       if (LOWORD(wParam)=='W')
1044       {
1045         CHARFORMAT2W chf;
1046         char buf[2048];
1047         ME_GetSelectionCharFormat(editor, &chf);
1048         ME_DumpStyleToBuf(&chf, buf);
1049         MessageBoxA(NULL, buf, "Style dump", MB_OK);
1050       }
1051       if (LOWORD(wParam)=='Q')
1052       {
1053         ME_CheckCharOffsets(editor);
1054       }
1055     }
1056     goto do_default;
1057   case WM_CHAR:
1058   {
1059     WCHAR wstr;
1060     if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY) {
1061       MessageBeep(MB_ICONERROR);
1062       return 0; /* FIXME really 0 ? */
1063     }
1064     wstr = LOWORD(wParam);
1065     if (((unsigned)wstr)>=' ' || wstr=='\r') {
1066       /* FIXME maybe it would make sense to call EM_REPLACESEL instead ? */
1067       ME_Style *style = ME_GetInsertStyle(editor, 0);
1068       ME_SaveTempStyle(editor);
1069       ME_InsertTextFromCursor(editor, 0, &wstr, 1, style);
1070       ME_ReleaseStyle(style);
1071       ME_CommitUndo(editor);
1072       ME_UpdateRepaint(editor);
1073     }
1074     return 0;
1075   }
1076   case WM_VSCROLL:
1077   {
1078     si.cbSize = sizeof(SCROLLINFO);
1079     si.fMask = SIF_PAGE|SIF_POS|SIF_RANGE|SIF_TRACKPOS;
1080     GetScrollInfo(hWnd, SB_VERT, &si);
1081     switch(LOWORD(wParam)) {
1082     case SB_THUMBTRACK:
1083       SetScrollPos(hWnd, SB_VERT, si.nTrackPos, FALSE);
1084       ScrollWindow(hWnd, 0, si.nPos-si.nTrackPos, NULL, NULL);
1085       /* InvalidateRect(hWnd, NULL, TRUE); */
1086       UpdateWindow(hWnd);
1087       break;
1088     }
1089     break;
1090   }
1091   case WM_SIZE:
1092   {
1093     ME_MarkAllForWrapping(editor);
1094     ME_Repaint(editor);
1095     return DefWindowProcW(hWnd, msg, wParam, lParam);
1096   }
1097   case EM_GETOLEINTERFACE:
1098   {
1099     LPVOID *ppvObj = (LPVOID*) lParam;
1100     FIXME("EM_GETOLEINTERFACE %p: stub\n", ppvObj);
1101     return CreateIRichEditOle(ppvObj);
1102   }
1103   default:
1104   do_default:
1105     return DefWindowProcW(hWnd, msg, wParam, lParam);
1106   }
1107   return 0L;
1108 }
1109
1110 /******************************************************************
1111  *        RichEdit10ANSIWndProc (RICHED20.9)
1112  */
1113 LRESULT WINAPI RichEdit10ANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1114 {
1115   /* FIXME: this is NOT the same as 2.0 version */
1116   return RichEditANSIWndProc(hWnd, msg, wParam, lParam);
1117 }
1118
1119 void ME_SendOldNotify(ME_TextEditor *editor, int nCode)
1120 {
1121   HWND hWnd = editor->hWnd;
1122   SendMessageA(GetParent(hWnd), WM_COMMAND, (nCode<<16)|GetWindowLongW(hWnd, GWLP_ID), (LPARAM)hWnd);
1123 }
1124
1125 int ME_CountParagraphsBetween(ME_TextEditor *editor, int from, int to)
1126 {
1127   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
1128   int i = 0;
1129
1130   while(item && item->member.para.next_para->member.para.nCharOfs <= from)
1131     item = item->member.para.next_para;
1132   if (!item)
1133     return 0;
1134   while(item && item->member.para.next_para->member.para.nCharOfs <= to) {
1135     item = item->member.para.next_para;
1136     i++;
1137   }
1138   return i;
1139 }
1140
1141
1142 int ME_GetTextW(ME_TextEditor *editor, WCHAR *buffer, int nStart, int nChars, int bCRLF)
1143 {
1144   ME_DisplayItem *item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
1145   int nWritten = 0;
1146
1147   if (!item) {
1148     *buffer = L'\0';
1149     return 0;
1150   }
1151   assert(item);
1152
1153   if (nStart)
1154   {
1155     int nLen = ME_StrLen(item->member.run.strText) - nStart;
1156     if (nLen > nChars)
1157       nLen = nChars;
1158     CopyMemory(buffer, item->member.run.strText->szData + nStart, sizeof(WCHAR)*nLen);
1159     nChars -= nLen;
1160     nWritten += nLen;
1161     if (!nChars)
1162       return nWritten;
1163     buffer += nLen;
1164     nStart = 0;
1165     item = ME_FindItemFwd(item, diRun);
1166   }
1167
1168   while(nChars && item)
1169   {
1170     int nLen = ME_StrLen(item->member.run.strText);
1171     if (nLen > nChars)
1172       nLen = nChars;
1173
1174     if (item->member.run.nFlags & MERF_ENDPARA)
1175     {
1176       if (bCRLF) {
1177         *buffer++ = '\r';
1178         nWritten++;
1179       }
1180       *buffer = '\n';
1181       assert(nLen == 1);
1182     }
1183     else
1184       CopyMemory(buffer, item->member.run.strText->szData, sizeof(WCHAR)*nLen);
1185     nChars -= nLen;
1186     nWritten += nLen;
1187     buffer += nLen;
1188
1189     if (!nChars)
1190     {
1191       *buffer = L'\0';
1192       return nWritten;
1193     }
1194     item = ME_FindItemFwd(item, diRun);
1195   }
1196   *buffer = L'\0';
1197   return nWritten;
1198 }
1199
1200 static WCHAR wszClassName[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '2', '0', 'W', 0};
1201 static WCHAR wszClassName50[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '5', '0', 'W', 0};
1202
1203 void ME_RegisterEditorClass(HINSTANCE hInstance)
1204 {
1205   BOOL bResult;
1206   WNDCLASSW wcW;
1207   WNDCLASSA wcA;
1208
1209   wcW.style = CS_HREDRAW | CS_VREDRAW;
1210   wcW.lpfnWndProc = RichEditANSIWndProc;
1211   wcW.cbClsExtra = 0;
1212   wcW.cbWndExtra = 4;
1213   wcW.hInstance = NULL; /* hInstance would register DLL-local class */
1214   wcW.hIcon = NULL;
1215   wcW.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
1216   wcW.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
1217   wcW.lpszMenuName = NULL;
1218   wcW.lpszClassName = wszClassName;
1219   bResult = RegisterClassW(&wcW);
1220   assert(bResult);
1221   wcW.lpszClassName = wszClassName50;
1222   bResult = RegisterClassW(&wcW);
1223   assert(bResult);
1224
1225   wcA.style = CS_HREDRAW | CS_VREDRAW;
1226   wcA.lpfnWndProc = RichEditANSIWndProc;
1227   wcA.cbClsExtra = 0;
1228   wcA.cbWndExtra = 4;
1229   wcA.hInstance = NULL; /* hInstance would register DLL-local class */
1230   wcA.hIcon = NULL;
1231   wcA.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
1232   wcA.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
1233   wcA.lpszMenuName = NULL;
1234   wcA.lpszClassName = "RichEdit20A";
1235   bResult = RegisterClassA(&wcA);
1236   assert(bResult);
1237   wcA.lpszClassName = "RichEdit50A";
1238   bResult = RegisterClassA(&wcA);
1239   assert(bResult);
1240 }
1241
1242 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
1243 {
1244     TRACE("\n");
1245     switch (fdwReason)
1246     {
1247     case DLL_PROCESS_ATTACH:
1248       DisableThreadLibraryCalls(hinstDLL);
1249       me_heap = HeapCreate (0, 0x10000, 0);
1250       ME_RegisterEditorClass(hinstDLL);
1251       break;
1252
1253     case DLL_PROCESS_DETACH:
1254       UnregisterClassW(wszClassName, 0);
1255       UnregisterClassW(wszClassName50, 0);
1256       UnregisterClassA("RichEdit20A", 0);
1257       UnregisterClassA("RichEdit50A", 0);
1258       HeapDestroy (me_heap);
1259       me_heap = NULL;
1260       break;
1261     }
1262     return TRUE;
1263 }
1264
1265 /******************************************************************
1266  *        CreateTextServices (RICHED20.4)
1267  *
1268  * FIXME should be ITextHost instead of void*
1269  */
1270 HRESULT WINAPI CreateTextServices(IUnknown *punkOuter, void *pITextHost,
1271     IUnknown **ppUnk)
1272 {
1273   FIXME("stub\n");
1274   /* FIXME should support aggregation */
1275   if (punkOuter)
1276     return CLASS_E_NOAGGREGATION;
1277
1278   return E_FAIL; /* E_NOTIMPL isn't allowed by MSDN */
1279 }
1280
1281 /******************************************************************
1282  *        REExtendedRegisterClass (RICHED20.8)
1283  *
1284  * FIXME undocumented
1285  */
1286 void WINAPI REExtendedRegisterClass(void)
1287 {
1288   FIXME("stub\n");
1289 }