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   CHARFORMAT2W fmt;
 281   fmt.cbSize = sizeof(fmt);
 282   fmt.dwMask = 0;
 283
 284   switch(info->rtfMinor)
 285   {
 286     case rtfPlain:
 287       /* FIXME add more flags once they're implemented */
 288       fmt.dwMask = CFM_BOLD | CFM_ITALIC | CFM_UNDERLINE | CFM_STRIKEOUT | CFM_COLOR | CFM_BACKCOLOR | CFM_SIZE | CFM_WEIGHT;
 289       fmt.dwEffects = CFE_AUTOCOLOR | CFE_AUTOBACKCOLOR;
 290       fmt.yHeight = 12*20; /* 12pt */
 291       fmt.wWeight = 400;
 292       break;
 293     case rtfBold:
 294       fmt.dwMask = CFM_BOLD;
 295       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 296       break;
 297     case rtfItalic:
 298       fmt.dwMask = CFM_ITALIC;
 299       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 300       break;
 301     case rtfUnderline:
 302       fmt.dwMask = CFM_UNDERLINE;
 303       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 304       break;
 305     case rtfStrikeThru:
 306       fmt.dwMask = CFM_STRIKEOUT;
 307       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 308       break;
 309     case rtfBackColor:
 310       fmt.dwMask = CFM_BACKCOLOR;
 311       fmt.dwEffects = 0;
 312       if (info->rtfParam == 0)
 313         fmt.dwEffects = CFE_AUTOBACKCOLOR;
 314       else if (info->rtfParam != rtfNoParam)
 315       {
 316         RTFColor *c = RTFGetColor(info, info->rtfParam);
 317         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 318       }
 319       break;
 320     case rtfForeColor:
 321       fmt.dwMask = CFM_COLOR;
 322       fmt.dwEffects = 0;
 323       if (info->rtfParam == 0)
 324         fmt.dwEffects = CFE_AUTOCOLOR;
 325       else if (info->rtfParam != rtfNoParam)
 326       {
 327         RTFColor *c = RTFGetColor(info, info->rtfParam);
 328         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 329       }
 330       break;
 331     case rtfFontNum:
 332       if (info->rtfParam != rtfNoParam)
 333       {
 334         RTFFont *f = RTFGetFont(info, info->rtfParam);
 335         if (f)
 336         {
 337           MultiByteToWideChar(CP_ACP, 0, f->rtfFName, -1, fmt.szFaceName, sizeof(fmt.szFaceName)/sizeof(WCHAR));
 338           fmt.szFaceName[sizeof(fmt.szFaceName)/sizeof(WCHAR)-1] = '\0';
 339           fmt.dwMask = CFM_FACE;
 340         }
 341       }
 342       break;
 343     case rtfFontSize:
 344       fmt.dwMask = CFM_SIZE;
 345       if (info->rtfParam != rtfNoParam)
 346         fmt.yHeight = info->rtfParam*10;
 347       break;
 348   }
 349   if (fmt.dwMask) {
 350     ME_Style *style2;
 351     RTFFlushOutputBuffer(info);
 352     /* FIXME too slow ? how come ? */
 353     style2 = ME_ApplyStyle(info->style, &fmt);
 354     ME_ReleaseStyle(info->style);
 355     info->style = style2;
 356   }
 357 }
 358
 359 void ME_RTFParAttrHook(RTF_Info *info)
 360 {
 361   PARAFORMAT2 fmt;
 362   fmt.cbSize = sizeof(fmt);
 363   fmt.dwMask = 0;
 364
 365   switch(info->rtfMinor)
 366   {
 367   case rtfParDef: /* I'm not 100% sure what does it do, but I guess it restores default paragraph attributes */
 368     fmt.dwMask = PFM_ALIGNMENT;
 369     fmt.wAlignment = PFA_LEFT;
 370     break;
 371   case rtfQuadLeft:
 372   case rtfQuadJust:
 373     fmt.dwMask = PFM_ALIGNMENT;
 374     fmt.wAlignment = PFA_LEFT;
 375     break;
 376   case rtfQuadRight:
 377     fmt.dwMask = PFM_ALIGNMENT;
 378     fmt.wAlignment = PFA_RIGHT;
 379     break;
 380   case rtfQuadCenter:
 381     fmt.dwMask = PFM_ALIGNMENT;
 382     fmt.wAlignment = PFA_CENTER;
 383     break;
 384   }
 385   if (fmt.dwMask) {
 386     RTFFlushOutputBuffer(info);
 387     /* FIXME too slow ? how come ?*/
 388     ME_SetSelectionParaFormat(info->editor, &fmt);
 389   }
 390 }
 391
 392 void ME_RTFReadHook(RTF_Info *info) {
 393   switch(info->rtfClass)
 394   {
 395     case rtfGroup:
 396       switch(info->rtfMajor)
 397       {
 398         case rtfBeginGroup:
 399           if (info->stackTop < maxStack) {
 400             memcpy(&info->stack[info->stackTop].fmt, &info->style->fmt, sizeof(CHARFORMAT2W));
 401             info->stack[info->stackTop].codePage = info->codePage;
 402             info->stack[info->stackTop].unicodeLength = info->unicodeLength;
 403           }
 404           info->stackTop++;
 405           break;
 406         case rtfEndGroup:
 407         {
 408           ME_Style *s;
 409           RTFFlushOutputBuffer(info);
 410           info->stackTop--;
 411           /* FIXME too slow ? how come ? */
 412           s = ME_ApplyStyle(info->style, &info->stack[info->stackTop].fmt);
 413           ME_ReleaseStyle(info->style);
 414           info->style = s;
 415           info->codePage = info->stack[info->stackTop].codePage;
 416           info->unicodeLength = info->stack[info->stackTop].unicodeLength;
 417           break;
 418         }
 419       }
 420       break;
 421     case rtfControl:
 422       switch(info->rtfMajor)
 423       {
 424         case rtfCharAttr:
 425           ME_RTFCharAttrHook(info);
 426           break;
 427         case rtfParAttr:
 428           ME_RTFParAttrHook(info);
 429           break;
 430       }
 431       break;
 432   }
 433 }
 434
 435 static LRESULT ME_StreamIn(ME_TextEditor *editor, DWORD format, EDITSTREAM *stream)
 436 {
 437   RTF_Info parser;
 438   ME_Style *style;
 439   int from, to, to2, nUndoMode;
 440   ME_UndoItem *pUI;
 441   int nEventMask = editor->nEventMask;
 442
 443   TRACE("%p %p\n", stream, editor->hWnd);
 444   editor->nEventMask = 0;
 445
 446   ME_GetSelection(editor, &from, &to);
 447   if (format & SFF_SELECTION) {
 448     style = ME_GetSelectionInsertStyle(editor);
 449
 450     ME_InternalDeleteText(editor, from, to-from);
 451   }
 452   else {
 453     style = editor->pBuffer->pDefaultStyle;
 454     ME_AddRefStyle(style);
 455     SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 456     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
 457     from = to = 0;
 458     ME_ClearTempStyle(editor);
 459     /* FIXME restore default paragraph formatting ! */
 460   }
 461
 462   nUndoMode = editor->nUndoMode;
 463   editor->nUndoMode = umIgnore;
 464   if (format & SF_RTF) {
 465     /* setup the RTF parser */
 466     memset(&parser, 0, sizeof parser);
 467     RTFSetEditStream(&parser, stream);
 468     parser.rtfFormat = format&(SF_TEXT|SF_RTF);
 469     parser.hwndEdit = editor->hWnd;
 470     parser.editor = editor;
 471     parser.style = style;
 472     WriterInit(&parser);
 473     RTFInit(&parser);
 474     RTFSetReadHook(&parser, ME_RTFReadHook);
 475     BeginFile(&parser);
 476
 477     /* do the parsing */
 478     RTFRead(&parser);
 479     RTFFlushOutputBuffer(&parser);
 480     RTFDestroy(&parser);
 481
 482     style = parser.style;
 483   }
 484   else if (format & SF_TEXT)
 485     ME_StreamInText(editor, format, stream, style);
 486   else
 487     ERR("EM_STREAMIN without SF_TEXT or SF_RTF\n");
 488   ME_GetSelection(editor, &to, &to2);
 489   /* put the cursor at the top */
 490   if (!(format & SFF_SELECTION))
 491     SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 492   else
 493   {
 494     /* FIXME where to put cursor now ? */
 495   }
 496
 497   editor->nUndoMode = nUndoMode;
 498   pUI = ME_AddUndoItem(editor, diUndoDeleteRun, NULL);
 499   TRACE("from %d to %d\n", from, to);
 500   if (pUI && from < to)
 501   {
 502     pUI->nStart = from;
 503     pUI->nLen = to-from;
 504   }
 505   ME_CommitUndo(editor);
 506   ME_ReleaseStyle(style);
 507   editor->nEventMask = nEventMask;
 508   InvalidateRect(editor->hWnd, NULL, TRUE);
 509   ME_UpdateRepaint(editor);
 510   if (!(format & SFF_SELECTION)) {
 511     ME_ClearTempStyle(editor);
 512   }
 513   ME_MoveCaret(editor);
 514   ME_SendSelChange(editor);
 515
 516   return 0;
 517 }
 518
 519
 520 ME_DisplayItem *
 521 ME_FindItemAtOffset(ME_TextEditor *editor, ME_DIType nItemType, int nOffset, int *nItemOffset)
 522 {
 523   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
 524
 525   while (item && item->member.para.next_para->member.para.nCharOfs <= nOffset)
 526     item = ME_FindItemFwd(item, diParagraph);
 527
 528   if (!item)
 529     return item;
 530
 531   nOffset -= item->member.para.nCharOfs;
 532   if (nItemType == diParagraph) {
 533     if (nItemOffset)
 534       *nItemOffset = nOffset;
 535     return item;
 536   }
 537
 538   do {
 539     item = ME_FindItemFwd(item, diRun);
 540   } while (item && (item->member.run.nCharOfs + ME_StrLen(item->member.run.strText) <= nOffset));
 541   if (item) {
 542     nOffset -= item->member.run.nCharOfs;
 543     if (nItemOffset)
 544       *nItemOffset = nOffset;
 545   }
 546   return item;
 547 }
 548
 549
 550 ME_TextEditor *ME_MakeEditor(HWND hWnd) {
 551   ME_TextEditor *ed = ALLOC_OBJ(ME_TextEditor);
 552   HDC hDC;
 553   int i;
 554   ed->hWnd = hWnd;
 555   ed->pBuffer = ME_MakeText();
 556   hDC = GetDC(hWnd);
 557   ME_MakeFirstParagraph(hDC, ed->pBuffer);
 558   ReleaseDC(hWnd, hDC);
 559   ed->bCaretShown = FALSE;
 560   ed->nCursors = 3;
 561   ed->pCursors = ALLOC_N_OBJ(ME_Cursor, ed->nCursors);
 562   ed->pCursors[0].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
 563   ed->pCursors[0].nOffset = 0;
 564   ed->pCursors[1].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
 565   ed->pCursors[1].nOffset = 0;
 566   ed->nLastTotalLength = ed->nTotalLength = 0;
 567   ed->nScrollPos = 0;
 568   ed->nUDArrowX = -1;
 569   ed->nSequence = 0;
 570   ed->rgbBackColor = -1;
 571   ed->bCaretAtEnd = FALSE;
 572   ed->nEventMask = 0;
 573   ed->nModifyStep = 0;
 574   ed->pUndoStack = ed->pRedoStack = NULL;
 575   ed->nUndoMode = umAddToUndo;
 576   ed->nParagraphs = 1;
 577   ed->nLastSelStart = ed->nLastSelEnd = 0;
 578   for (i=0; i<HFONT_CACHE_SIZE; i++)
 579   {
 580     ed->pFontCache[i].nRefs = 0;
 581     ed->pFontCache[i].nAge = 0;
 582     ed->pFontCache[i].hFont = NULL;
 583   }
 584   ME_CheckCharOffsets(ed);
 585   return ed;
 586 }
 587
 588 typedef struct tagME_GlobalDestStruct
 589 {
 590   HGLOBAL hData;
 591   int nLength;
 592 } ME_GlobalDestStruct;
 593
 594 static DWORD CALLBACK ME_AppendToHGLOBAL(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 595 {
 596   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 597   int nMaxSize;
 598   BYTE *pDest;
 599
 600   nMaxSize = GlobalSize(pData->hData);
 601   if (pData->nLength+cb+1 >= cb)
 602   {
 603     /* round up to 2^17 */
 604     int nNewSize = (((nMaxSize+cb+1)|0x1FFFF)+1) & 0xFFFE0000;
 605     pData->hData = GlobalReAlloc(pData->hData, nNewSize, 0);
 606   }
 607   pDest = (BYTE *)GlobalLock(pData->hData);
 608   memcpy(pDest + pData->nLength, lpBuff, cb);
 609   pData->nLength += cb;
 610   pDest[pData->nLength] = '\0';
 611   GlobalUnlock(pData->hData);
 612   *pcb = cb;
 613
 614   return 0;
 615 }
 616
 617 static DWORD CALLBACK ME_ReadFromHGLOBALUnicode(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 618 {
 619   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 620   int i;
 621   WORD *pSrc, *pDest;
 622
 623   cb = cb >> 1;
 624   pDest = (WORD *)lpBuff;
 625   pSrc = (WORD *)GlobalLock(pData->hData);
 626   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
 627     pDest[i] = pSrc[pData->nLength+i];
 628   }
 629   pData->nLength += i;
 630   *pcb = 2*i;
 631   GlobalUnlock(pData->hData);
 632   return 0;
 633 }
 634
 635 static DWORD CALLBACK ME_ReadFromHGLOBALRTF(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 636 {
 637   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 638   int i;
 639   BYTE *pSrc, *pDest;
 640
 641   pDest = lpBuff;
 642   pSrc = (BYTE *)GlobalLock(pData->hData);
 643   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
 644     pDest[i] = pSrc[pData->nLength+i];
 645   }
 646   pData->nLength += i;
 647   *pcb = i;
 648   GlobalUnlock(pData->hData);
 649   return 0;
 650 }
 651
 652 void ME_DestroyEditor(ME_TextEditor *editor)
 653 {
 654   ME_DisplayItem *pFirst = editor->pBuffer->pFirst;
 655   ME_DisplayItem *p = pFirst, *pNext = NULL;
 656   int i;
 657
 658   ME_ClearTempStyle(editor);
 659   ME_EmptyUndoStack(editor);
 660   while(p) {
 661     pNext = p->next;
 662     ME_DestroyDisplayItem(p);
 663     p = pNext;
 664   }
 665   ME_ReleaseStyle(editor->pBuffer->pDefaultStyle);
 666   for (i=0; i<HFONT_CACHE_SIZE; i++)
 667   {
 668     if (editor->pFontCache[i].hFont)
 669       DeleteObject(editor->pFontCache[i].hFont);
 670   }
 671
 672   FREE_OBJ(editor);
 673 }
 674
 675 #define UNSUPPORTED_MSG(e) \
 676   case e: \
 677     FIXME(#e ": stub\n"); \
 678     return DefWindowProcW(hWnd, msg, wParam, lParam);
 679
 680 /******************************************************************
 681  *        RichEditANSIWndProc (RICHED20.10)
 682  */
 683 LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
 684   HDC hDC;
 685   PAINTSTRUCT ps;
 686   SCROLLINFO si;
 687   ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
 688   TRACE("msg %d %08x %08lx\n", msg, wParam, lParam);
 689   switch(msg) {
 690
 691   UNSUPPORTED_MSG(EM_AUTOURLDETECT)
 692   UNSUPPORTED_MSG(EM_CANPASTE)
 693   UNSUPPORTED_MSG(EM_CHARFROMPOS)
 694   UNSUPPORTED_MSG(EM_DISPLAYBAND)
 695   UNSUPPORTED_MSG(EM_EXLIMITTEXT)
 696   UNSUPPORTED_MSG(EM_EXLINEFROMCHAR)
 697   UNSUPPORTED_MSG(EM_FINDTEXT)
 698   UNSUPPORTED_MSG(EM_FINDTEXTEX)
 699   UNSUPPORTED_MSG(EM_FINDWORDBREAK)
 700   UNSUPPORTED_MSG(EM_FMTLINES)
 701   UNSUPPORTED_MSG(EM_FORMATRANGE)
 702   UNSUPPORTED_MSG(EM_GETFIRSTVISIBLELINE)
 703   UNSUPPORTED_MSG(EM_GETIMECOMPMODE)
 704   /* UNSUPPORTED_MSG(EM_GETIMESTATUS) missing in Wine headers */
 705   UNSUPPORTED_MSG(EM_GETLANGOPTIONS)
 706   UNSUPPORTED_MSG(EM_GETLIMITTEXT)
 707   UNSUPPORTED_MSG(EM_GETLINE)
 708   UNSUPPORTED_MSG(EM_GETLINECOUNT)
 709   /* UNSUPPORTED_MSG(EM_GETOLEINTERFACE) separate stub */
 710   UNSUPPORTED_MSG(EM_GETOPTIONS)
 711   UNSUPPORTED_MSG(EM_GETRECT)
 712   UNSUPPORTED_MSG(EM_GETREDONAME)
 713   UNSUPPORTED_MSG(EM_GETTEXTMODE)
 714   UNSUPPORTED_MSG(EM_GETUNDONAME)
 715   UNSUPPORTED_MSG(EM_GETWORDBREAKPROC)
 716   UNSUPPORTED_MSG(EM_GETWORDBREAKPROCEX)
 717   UNSUPPORTED_MSG(EM_HIDESELECTION)
 718   UNSUPPORTED_MSG(EM_LIMITTEXT) /* also known as EM_SETLIMITTEXT */
 719   UNSUPPORTED_MSG(EM_LINEFROMCHAR)
 720   UNSUPPORTED_MSG(EM_LINEINDEX)
 721   UNSUPPORTED_MSG(EM_LINELENGTH)
 722   UNSUPPORTED_MSG(EM_LINESCROLL)
 723   UNSUPPORTED_MSG(EM_PASTESPECIAL)
 724 /*  UNSUPPORTED_MSG(EM_POSFROMCHARS) missing in Wine headers */
 725   UNSUPPORTED_MSG(EM_REQUESTRESIZE)
 726   UNSUPPORTED_MSG(EM_SCROLL)
 727   UNSUPPORTED_MSG(EM_SCROLLCARET)
 728   UNSUPPORTED_MSG(EM_SELECTIONTYPE)
 729   UNSUPPORTED_MSG(EM_SETLANGOPTIONS)
 730   UNSUPPORTED_MSG(EM_SETOLECALLBACK)
 731   UNSUPPORTED_MSG(EM_SETOPTIONS)
 732   UNSUPPORTED_MSG(EM_SETRECT)
 733   UNSUPPORTED_MSG(EM_SETRECTNP)
 734   UNSUPPORTED_MSG(EM_SETTARGETDEVICE)
 735   UNSUPPORTED_MSG(EM_SETTEXTMODE)
 736   UNSUPPORTED_MSG(EM_SETUNDOLIMIT)
 737   UNSUPPORTED_MSG(EM_SETWORDBREAKPROC)
 738   UNSUPPORTED_MSG(EM_SETWORDBREAKPROCEX)
 739   UNSUPPORTED_MSG(WM_SETFONT)
 740   UNSUPPORTED_MSG(WM_STYLECHANGING)
 741   UNSUPPORTED_MSG(WM_STYLECHANGED)
 742 /*  UNSUPPORTED_MSG(WM_UNICHAR) FIXME missing in Wine headers */
 743
 744 /* Messages specific to Richedit controls */
 745
 746   case EM_STREAMIN:
 747    return ME_StreamIn(editor, wParam, (EDITSTREAM*)lParam);
 748   case EM_STREAMOUT:
 749    return ME_StreamOut(editor, wParam, (EDITSTREAM *)lParam);
 750   case WM_GETDLGCODE:
 751   {
 752     UINT code = DLGC_WANTCHARS|DLGC_WANTARROWS;
 753     if (GetWindowLongW(hWnd, GWL_STYLE)&ES_WANTRETURN)
 754       code |= 0; /* FIXME what can we do here ? ask for messages and censor them ? */
 755     return code;
 756   }
 757   case WM_NCCREATE:
 758   {
 759     CREATESTRUCTW *pcs = (CREATESTRUCTW *)lParam;
 760     editor = ME_MakeEditor(hWnd);
 761     SetWindowLongW(hWnd, 0, (long)editor);
 762     pcs = 0; /* ignore */
 763     return TRUE;
 764   }
 765   case EM_EMPTYUNDOBUFFER:
 766     ME_EmptyUndoStack(editor);
 767     return 0;
 768   case EM_GETSEL:
 769   {
 770     ME_GetSelection(editor, (int *)wParam, (int *)lParam);
 771     if (!((wParam|lParam) & 0xFFFF0000))
 772       return (lParam<<16)|wParam;
 773     return -1;
 774   }
 775   case EM_EXGETSEL:
 776   {
 777     CHARRANGE *pRange = (CHARRANGE *)lParam;
 778     ME_GetSelection(editor, (int *)&pRange->cpMin, (int *)&pRange->cpMax);
 779     return 0;
 780   }
 781   case EM_CANUNDO:
 782     return editor->pUndoStack != NULL;
 783   case EM_CANREDO:
 784     return editor->pRedoStack != NULL;
 785   case EM_UNDO:
 786     ME_Undo(editor);
 787     return 0;
 788   case EM_REDO:
 789     ME_Redo(editor);
 790     return 0;
 791   case EM_SETSEL:
 792   {
 793     ME_SetSelection(editor, wParam, lParam);
 794     ME_Repaint(editor);
 795     ME_SendSelChange(editor);
 796     return 0;
 797   }
 798   case EM_EXSETSEL:
 799   {
 800     CHARRANGE *pRange = (CHARRANGE *)lParam;
 801     ME_SetSelection(editor, pRange->cpMin, pRange->cpMax);
 802     /* FIXME optimize */
 803     ME_Repaint(editor);
 804     ME_SendSelChange(editor);
 805     return 0;
 806   }
 807   case EM_SETBKGNDCOLOR:
 808   {
 809     LRESULT lColor = ME_GetBackColor(editor);
 810     if (wParam)
 811       editor->rgbBackColor = -1;
 812     else
 813       editor->rgbBackColor = lParam;
 814     InvalidateRect(hWnd, NULL, TRUE);
 815     UpdateWindow(hWnd);
 816     return lColor;
 817   }
 818   case EM_GETMODIFY:
 819     return editor->nModifyStep == 0 ? 0 : 1;
 820   case EM_SETMODIFY:
 821   {
 822     if (wParam)
 823       editor->nModifyStep = 0x80000000;
 824     else
 825       editor->nModifyStep = 0;
 826
 827     return 0;
 828   }
 829   case EM_SETREADONLY:
 830   {
 831     long nStyle = GetWindowLongW(hWnd, GWL_STYLE);
 832     if (wParam)
 833       nStyle |= ES_READONLY;
 834     else
 835       nStyle &= ~ES_READONLY;
 836     SetWindowLongW(hWnd, GWL_STYLE, nStyle);
 837     ME_Repaint(editor);
 838     return 0;
 839   }
 840   case EM_SETEVENTMASK:
 841     editor->nEventMask = lParam;
 842     return 0;
 843   case EM_GETEVENTMASK:
 844     return editor->nEventMask;
 845   case EM_SETCHARFORMAT:
 846   {
 847     CHARFORMAT2W buf, *p;
 848     BOOL bRepaint = TRUE;
 849     p = ME_ToCF2W(&buf, (CHARFORMAT2W *)lParam);
 850     if (!wParam)
 851       ME_SetDefaultCharFormat(editor, p);
 852     else if (wParam == (SCF_WORD | SCF_SELECTION))
 853       FIXME("word selection not supported\n");
 854     else if (wParam == SCF_ALL)
 855       ME_SetCharFormat(editor, 0, ME_GetTextLength(editor), p);
 856     else {
 857       int from, to;
 858       ME_GetSelection(editor, &from, &to);
 859       bRepaint = (from != to);
 860       ME_SetSelectionCharFormat(editor, p);
 861     }
 862     ME_CommitUndo(editor);
 863     if (bRepaint)
 864       ME_UpdateRepaint(editor);
 865     return 0;
 866   }
 867   case EM_GETCHARFORMAT:
 868   {
 869     CHARFORMAT2W tmp;
 870     tmp.cbSize = sizeof(tmp);
 871     if (!wParam)
 872       ME_GetDefaultCharFormat(editor, &tmp);
 873     else
 874       ME_GetSelectionCharFormat(editor, &tmp);
 875     ME_CopyToCFAny((CHARFORMAT2W *)lParam, &tmp);
 876     return 0;
 877   }
 878   case EM_SETPARAFORMAT:
 879     ME_SetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
 880     ME_UpdateRepaint(editor);
 881     ME_CommitUndo(editor);
 882     return 0;
 883   case EM_GETPARAFORMAT:
 884     ME_GetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
 885     return 0;
 886   case WM_CLEAR:
 887   {
 888     int from, to;
 889     ME_GetSelection(editor, &from, &to);
 890     ME_InternalDeleteText(editor, from, to-from);
 891     ME_CommitUndo(editor);
 892     ME_UpdateRepaint(editor);
 893     return 0;
 894   }
 895   case EM_REPLACESEL:
 896   {
 897     int from, to;
 898     ME_Style *style;
 899     LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
 900     size_t len = lstrlenW(wszText);
 901     TRACE("EM_REPLACESEL - %s\n", debugstr_w(wszText));
 902
 903     ME_GetSelection(editor, &from, &to);
 904     style = ME_GetSelectionInsertStyle(editor);
 905     ME_InternalDeleteText(editor, from, to-from);
 906     ME_InsertTextFromCursor(editor, 0, wszText, len, style);
 907     ME_ReleaseStyle(style);
 908     ME_EndToUnicode(hWnd, wszText);
 909     /* drop temporary style if line end */
 910     /* FIXME question: does abc\n mean: put abc, clear temp style, put \n? (would require a change) */
 911     if (len>0 && wszText[len-1] == '\n')
 912       ME_ClearTempStyle(editor);
 913
 914     ME_CommitUndo(editor);
 915     if (!wParam)
 916       ME_EmptyUndoStack(editor);
 917     ME_UpdateRepaint(editor);
 918     return 0;
 919   }
 920   case WM_SETTEXT:
 921   {
 922     LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
 923     TRACE("WM_SETTEXT - %s\n", (char *)(wszText)); /* debugstr_w() */
 924     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
 925     /* uses default style! */
 926     ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
 927     ME_EndToUnicode(hWnd, wszText);
 928     ME_CommitUndo(editor);
 929     ME_EmptyUndoStack(editor);
 930     ME_UpdateRepaint(editor);
 931     return 0;
 932   }
 933   case WM_PASTE:
 934   {
 935     DWORD dwFormat = 0;
 936     EDITSTREAM es;
 937     ME_GlobalDestStruct gds;
 938     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
 939     UINT cf = 0;
 940
 941     if (!OpenClipboard(hWnd))
 942       return 0;
 943     if (IsClipboardFormatAvailable(nRTFFormat))
 944       cf = nRTFFormat, dwFormat = SF_RTF;
 945     else if (IsClipboardFormatAvailable(CF_UNICODETEXT))
 946       cf = CF_UNICODETEXT, dwFormat = SF_TEXT|SF_UNICODE;
 947     else
 948       return 0;
 949
 950     gds.hData = GetClipboardData(cf);
 951     gds.nLength = 0;
 952     es.dwCookie = (DWORD)&gds;
 953     es.pfnCallback = dwFormat == SF_RTF ? ME_ReadFromHGLOBALRTF : ME_ReadFromHGLOBALUnicode;
 954     SendMessageW(hWnd, EM_STREAMIN, dwFormat|SFF_SELECTION, (LPARAM)&es);
 955
 956     CloseClipboard();
 957     return 0;
 958   }
 959   case WM_CUT:
 960   case WM_COPY:
 961   {
 962     int from, to, pars;
 963     WCHAR *data;
 964     HANDLE hData;
 965     EDITSTREAM es;
 966     ME_GlobalDestStruct gds;
 967
 968     if (!OpenClipboard(hWnd))
 969       return 0;
 970
 971     EmptyClipboard();
 972     ME_GetSelection(editor, &from, &to);
 973     pars = ME_CountParagraphsBetween(editor, from, to);
 974     hData = GlobalAlloc(GMEM_MOVEABLE, sizeof(WCHAR)*(to-from+pars+1));
 975     data = (WCHAR *)GlobalLock(hData);
 976     ME_GetTextW(editor, data, from, to-from, TRUE);
 977     GlobalUnlock(hData);
 978
 979     gds.hData = GlobalAlloc(GMEM_MOVEABLE, 0);
 980     gds.nLength = 0;
 981     es.dwCookie = (DWORD)&gds;
 982     es.pfnCallback = ME_AppendToHGLOBAL;
 983     SendMessageW(hWnd, EM_STREAMOUT, SFF_SELECTION|SF_RTF, (LPARAM)&es);
 984     GlobalReAlloc(gds.hData, gds.nLength+1, 0);
 985
 986     SetClipboardData(CF_UNICODETEXT, hData);
 987     SetClipboardData(RegisterClipboardFormatA("Rich Text Format"), gds.hData);
 988
 989     CloseClipboard();
 990     if (msg == WM_CUT)
 991     {
 992       ME_InternalDeleteText(editor, from, to-from);
 993       ME_CommitUndo(editor);
 994       ME_UpdateRepaint(editor);
 995     }
 996     return 0;
 997   }
 998   case WM_GETTEXTLENGTH:
 999     return ME_GetTextLength(editor);
1000   case WM_GETTEXT:
1001   {
1002     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1003     tr.chrg.cpMin = 0;
1004     tr.chrg.cpMax = wParam-1;
1005     tr.lpstrText = (WCHAR *)lParam;
1006     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1007   }
1008   case EM_GETSELTEXT:
1009   {
1010     int from, to;
1011     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1012     ME_GetSelection(editor, &from, &to);
1013     tr.chrg.cpMin = from;
1014     tr.chrg.cpMax = to;
1015     tr.lpstrText = (WCHAR *)lParam;
1016     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1017   }
1018   case EM_GETTEXTRANGE:
1019   {
1020     TEXTRANGEW *rng = (TEXTRANGEW *)lParam;
1021     if (IsWindowUnicode(hWnd))
1022       return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, FALSE);
1023     else
1024     {
1025       int nLen = rng->chrg.cpMax-rng->chrg.cpMin;
1026       WCHAR *p = ALLOC_N_OBJ(WCHAR, nLen+1);
1027       int nChars = ME_GetTextW(editor, p, rng->chrg.cpMin, nLen, FALSE);
1028       /* FIXME this is a potential security hole (buffer overrun)
1029          if you know more about wchar->mbyte conversion please explain
1030       */
1031       WideCharToMultiByte(CP_ACP, 0, p, nChars+1, (char *)rng->lpstrText, nLen+1, NULL, NULL);
1032       FREE_OBJ(p);
1033       return nChars;
1034     }
1035     return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, FALSE);
1036   }
1037   case WM_CREATE:
1038     ME_CommitUndo(editor);
1039     ME_WrapMarkedParagraphs(editor);
1040     ME_MoveCaret(editor);
1041     return 0;
1042   case WM_DESTROY:
1043     ME_DestroyEditor(editor);
1044     SetWindowLongW(hWnd, 0, 0);
1045     return 0;
1046   case WM_LBUTTONDOWN:
1047     SetFocus(hWnd);
1048     ME_LButtonDown(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1049     SetCapture(hWnd);
1050     break;
1051   case WM_MOUSEMOVE:
1052     if (GetCapture() == hWnd)
1053       ME_MouseMove(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1054     break;
1055   case WM_LBUTTONUP:
1056     if (GetCapture() == hWnd)
1057       ReleaseCapture();
1058     break;
1059   case WM_PAINT:
1060     hDC = BeginPaint(hWnd, &ps);
1061     ME_PaintContent(editor, hDC, FALSE, &ps.rcPaint);
1062     EndPaint(hWnd, &ps);
1063     break;
1064   case WM_SETFOCUS:
1065     ME_ShowCaret(editor);
1066     ME_SendOldNotify(editor, EN_SETFOCUS);
1067     return 0;
1068   case WM_KILLFOCUS:
1069     ME_HideCaret(editor);
1070     ME_SendOldNotify(editor, EN_KILLFOCUS);
1071     return 0;
1072   case WM_ERASEBKGND:
1073   {
1074     HDC hDC = (HDC)wParam;
1075     RECT rc;
1076     COLORREF rgbBG = ME_GetBackColor(editor);
1077     if (GetUpdateRect(hWnd,&rc,TRUE))
1078     {
1079       HBRUSH hbr = CreateSolidBrush(rgbBG);
1080       FillRect(hDC, &rc, hbr);
1081       DeleteObject(hbr);
1082     }
1083     return 1;
1084   }
1085   case WM_COMMAND:
1086     TRACE("editor wnd command = %d\n", LOWORD(wParam));
1087     return 0;
1088   case WM_KEYDOWN:
1089     if (ME_ArrowKey(editor, LOWORD(wParam), GetKeyState(VK_CONTROL)<0)) {
1090       ME_CommitUndo(editor);
1091       ME_EnsureVisible(editor, editor->pCursors[0].pRun);
1092       HideCaret(hWnd);
1093       ME_MoveCaret(editor);
1094       ShowCaret(hWnd);
1095       return 0;
1096     }
1097     if (GetKeyState(VK_CONTROL)<0)
1098     {
1099       if (LOWORD(wParam)=='W')
1100       {
1101         CHARFORMAT2W chf;
1102         char buf[2048];
1103         ME_GetSelectionCharFormat(editor, &chf);
1104         ME_DumpStyleToBuf(&chf, buf);
1105         MessageBoxA(NULL, buf, "Style dump", MB_OK);
1106       }
1107       if (LOWORD(wParam)=='Q')
1108       {
1109         ME_CheckCharOffsets(editor);
1110       }
1111     }
1112     goto do_default;
1113   case WM_CHAR:
1114   {
1115     WCHAR wstr;
1116     if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY) {
1117       MessageBeep(MB_ICONERROR);
1118       return 0; /* FIXME really 0 ? */
1119     }
1120     wstr = LOWORD(wParam);
1121     if (((unsigned)wstr)>=' ' || wstr=='\r') {
1122       /* FIXME maybe it would make sense to call EM_REPLACESEL instead ? */
1123       ME_Style *style = ME_GetInsertStyle(editor, 0);
1124       ME_SaveTempStyle(editor);
1125       ME_InsertTextFromCursor(editor, 0, &wstr, 1, style);
1126       ME_ReleaseStyle(style);
1127       ME_CommitUndo(editor);
1128       ME_UpdateRepaint(editor);
1129     }
1130     return 0;
1131   }
1132   case WM_VSCROLL:
1133   {
1134     si.cbSize = sizeof(SCROLLINFO);
1135     si.fMask = SIF_PAGE|SIF_POS|SIF_RANGE|SIF_TRACKPOS;
1136     GetScrollInfo(hWnd, SB_VERT, &si);
1137     switch(LOWORD(wParam)) {
1138     case SB_THUMBTRACK:
1139       SetScrollPos(hWnd, SB_VERT, si.nTrackPos, FALSE);
1140       ScrollWindow(hWnd, 0, si.nPos-si.nTrackPos, NULL, NULL);
1141       /* InvalidateRect(hWnd, NULL, TRUE); */
1142       UpdateWindow(hWnd);
1143       break;
1144     }
1145     break;
1146   }
1147   case WM_SIZE:
1148   {
1149     ME_MarkAllForWrapping(editor);
1150     ME_WrapMarkedParagraphs(editor);
1151     ME_UpdateScrollBar(editor);
1152     ME_Repaint(editor);
1153     return DefWindowProcW(hWnd, msg, wParam, lParam);
1154   }
1155   case EM_GETOLEINTERFACE:
1156   {
1157     LPVOID *ppvObj = (LPVOID*) lParam;
1158     FIXME("EM_GETOLEINTERFACE %p: stub\n", ppvObj);
1159     return CreateIRichEditOle(ppvObj);
1160   }
1161   default:
1162   do_default:
1163     return DefWindowProcW(hWnd, msg, wParam, lParam);
1164   }
1165   return 0L;
1166 }
1167
1168 /******************************************************************
1169  *        RichEdit10ANSIWndProc (RICHED20.9)
1170  */
1171 LRESULT WINAPI RichEdit10ANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1172 {
1173   /* FIXME: this is NOT the same as 2.0 version */
1174   return RichEditANSIWndProc(hWnd, msg, wParam, lParam);
1175 }
1176
1177 void ME_SendOldNotify(ME_TextEditor *editor, int nCode)
1178 {
1179   HWND hWnd = editor->hWnd;
1180   SendMessageA(GetParent(hWnd), WM_COMMAND, (nCode<<16)|GetWindowLongW(hWnd, GWLP_ID), (LPARAM)hWnd);
1181 }
1182
1183 int ME_CountParagraphsBetween(ME_TextEditor *editor, int from, int to)
1184 {
1185   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
1186   int i = 0;
1187
1188   while(item && item->member.para.next_para->member.para.nCharOfs <= from)
1189     item = item->member.para.next_para;
1190   if (!item)
1191     return 0;
1192   while(item && item->member.para.next_para->member.para.nCharOfs <= to) {
1193     item = item->member.para.next_para;
1194     i++;
1195   }
1196   return i;
1197 }
1198
1199
1200 int ME_GetTextW(ME_TextEditor *editor, WCHAR *buffer, int nStart, int nChars, int bCRLF)
1201 {
1202   ME_DisplayItem *item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
1203   int nWritten = 0;
1204
1205   if (!item) {
1206     *buffer = L'\0';
1207     return 0;
1208   }
1209   assert(item);
1210
1211   if (nStart)
1212   {
1213     int nLen = ME_StrLen(item->member.run.strText) - nStart;
1214     if (nLen > nChars)
1215       nLen = nChars;
1216     CopyMemory(buffer, item->member.run.strText->szData + nStart, sizeof(WCHAR)*nLen);
1217     nChars -= nLen;
1218     nWritten += nLen;
1219     if (!nChars)
1220       return nWritten;
1221     buffer += nLen;
1222     nStart = 0;
1223     item = ME_FindItemFwd(item, diRun);
1224   }
1225
1226   while(nChars && item)
1227   {
1228     int nLen = ME_StrLen(item->member.run.strText);
1229     if (nLen > nChars)
1230       nLen = nChars;
1231
1232     if (item->member.run.nFlags & MERF_ENDPARA)
1233     {
1234       if (bCRLF) {
1235         *buffer++ = '\r';
1236         nWritten++;
1237       }
1238       *buffer = '\n';
1239       assert(nLen == 1);
1240     }
1241     else
1242       CopyMemory(buffer, item->member.run.strText->szData, sizeof(WCHAR)*nLen);
1243     nChars -= nLen;
1244     nWritten += nLen;
1245     buffer += nLen;
1246
1247     if (!nChars)
1248     {
1249       *buffer = L'\0';
1250       return nWritten;
1251     }
1252     item = ME_FindItemFwd(item, diRun);
1253   }
1254   *buffer = L'\0';
1255   return nWritten;
1256 }
1257
1258 static WCHAR wszClassName[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '2', '0', 'W', 0};
1259 static WCHAR wszClassName50[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '5', '0', 'W', 0};
1260
1261 void ME_RegisterEditorClass(HINSTANCE hInstance)
1262 {
1263   BOOL bResult;
1264   WNDCLASSW wcW;
1265   WNDCLASSA wcA;
1266
1267   wcW.style = CS_HREDRAW | CS_VREDRAW;
1268   wcW.lpfnWndProc = RichEditANSIWndProc;
1269   wcW.cbClsExtra = 0;
1270   wcW.cbWndExtra = 4;
1271   wcW.hInstance = NULL; /* hInstance would register DLL-local class */
1272   wcW.hIcon = NULL;
1273   wcW.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
1274   wcW.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
1275   wcW.lpszMenuName = NULL;
1276   wcW.lpszClassName = wszClassName;
1277   bResult = RegisterClassW(&wcW);
1278   assert(bResult);
1279   wcW.lpszClassName = wszClassName50;
1280   bResult = RegisterClassW(&wcW);
1281   assert(bResult);
1282
1283   wcA.style = CS_HREDRAW | CS_VREDRAW;
1284   wcA.lpfnWndProc = RichEditANSIWndProc;
1285   wcA.cbClsExtra = 0;
1286   wcA.cbWndExtra = 4;
1287   wcA.hInstance = NULL; /* hInstance would register DLL-local class */
1288   wcA.hIcon = NULL;
1289   wcA.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
1290   wcA.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
1291   wcA.lpszMenuName = NULL;
1292   wcA.lpszClassName = "RichEdit20A";
1293   bResult = RegisterClassA(&wcA);
1294   assert(bResult);
1295   wcA.lpszClassName = "RichEdit50A";
1296   bResult = RegisterClassA(&wcA);
1297   assert(bResult);
1298 }
1299
1300 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
1301 {
1302     TRACE("\n");
1303     switch (fdwReason)
1304     {
1305     case DLL_PROCESS_ATTACH:
1306       DisableThreadLibraryCalls(hinstDLL);
1307       me_heap = HeapCreate (0, 0x10000, 0);
1308       ME_RegisterEditorClass(hinstDLL);
1309       break;
1310
1311     case DLL_PROCESS_DETACH:
1312       UnregisterClassW(wszClassName, 0);
1313       UnregisterClassW(wszClassName50, 0);
1314       UnregisterClassA("RichEdit20A", 0);
1315       UnregisterClassA("RichEdit50A", 0);
1316       HeapDestroy (me_heap);
1317       me_heap = NULL;
1318       break;
1319     }
1320     return TRUE;
1321 }
1322
1323 /******************************************************************
1324  *        CreateTextServices (RICHED20.4)
1325  *
1326  * FIXME should be ITextHost instead of void*
1327  */
1328 HRESULT WINAPI CreateTextServices(IUnknown *punkOuter, void *pITextHost,
1329     IUnknown **ppUnk)
1330 {
1331   FIXME("stub\n");
1332   /* FIXME should support aggregation */
1333   if (punkOuter)
1334     return CLASS_E_NOAGGREGATION;
1335
1336   return E_FAIL; /* E_NOTIMPL isn't allowed by MSDN */
1337 }
1338
1339 /******************************************************************
1340  *        REExtendedRegisterClass (RICHED20.8)
1341  *
1342  * FIXME undocumented
1343  */
1344 void WINAPI REExtendedRegisterClass(void)
1345 {
1346   FIXME("stub\n");
1347 }