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 (can't fall back to text when the RTF isn't really RTF)
 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  * - messages/styles/notifications listed above
 170  * - Undo coalescing
 171  * - add remaining CHARFORMAT/PARAFORMAT fields
 172  * - right/center align should strip spaces from the beginning
 173  * - more advanced navigation (Ctrl-arrows)
 174  * - tabs
 175  * - pictures/OLE objects (not just smiling faces that lack API support ;-) )
 176  * - COM interface (looks like a major pain in the TODO list)
 177  * - calculate heights of pictures (half-done)
 178  * - horizontal scrolling (not even started)
 179  * - hysteresis during wrapping (related to scrollbars appearing/disappearing)
 180  * - find/replace
 181  * - how to implement EM_FORMATRANGE and EM_DISPLAYBAND ? (Mission Impossible)
 182  * - italic caret with italic fonts
 183  * - IME
 184  * - most notifications aren't sent at all (the most important ones are)
 185  * - when should EN_SELCHANGE be sent after text change ? (before/after EN_UPDATE?)
 186  * - WM_SETTEXT may use wrong style (but I'm 80% sure it's OK)
 187  * - EM_GETCHARFORMAT with SCF_SELECTION may not behave 100% like in original (but very close)
 188  *
 189  * Bugs that are probably fixed, but not so easy to verify:
 190  * - EN_UPDATE/EN_CHANGE are handled very incorrectly (should be OK now)
 191  * - undo for ME_JoinParagraphs doesn't store paragraph format ? (it does)
 192  * - check/fix artificial EOL logic (bCursorAtEnd, hardly logical)
 193  * - caret shouldn't be displayed when selection isn't empty
 194  * - check refcounting in style management functions (looks perfect now, but no bugs is suspicious)
 195  * - undo for setting default format (done, might be buggy)
 196  * - styles might be not released properly (looks like they work like charm, but who knows?
 197  *
 198  */
 199
 200 #include "editor.h"
 201 #include "ole2.h"
 202 #include "richole.h"
 203 #include "winreg.h"
 204 #define NO_SHLWAPI_STREAM
 205 #include "shlwapi.h"
 206
 207 #include "rtf.h"
 208
 209 WINE_DEFAULT_DEBUG_CHANNEL(richedit);
 210
 211 int me_debug = 0;
 212 HANDLE me_heap = NULL;
 213
 214 ME_TextBuffer *ME_MakeText() {
 215
 216   ME_TextBuffer *buf = ALLOC_OBJ(ME_TextBuffer);
 217
 218   ME_DisplayItem *p1 = ME_MakeDI(diTextStart);
 219   ME_DisplayItem *p2 = ME_MakeDI(diTextEnd);
 220
 221   p1->prev = NULL;
 222   p1->next = p2;
 223   p2->prev = p1;
 224   p2->next = NULL;
 225   p1->member.para.next_para = p2;
 226   p2->member.para.prev_para = p1;
 227   p2->member.para.nCharOfs = 0;
 228
 229   buf->pFirst = p1;
 230   buf->pLast = p2;
 231   buf->pCharStyle = NULL;
 232
 233   return buf;
 234 }
 235
 236
 237 static LRESULT ME_StreamInText(ME_TextEditor *editor, DWORD dwFormat, ME_InStream *stream, ME_Style *style)
 238 {
 239   WCHAR wszText[STREAMIN_BUFFER_SIZE+1];
 240   WCHAR *pText;
 241
 242   TRACE("%08lx %p\n", dwFormat, stream);
 243
 244   do {
 245     long nWideChars = 0;
 246
 247     if (!stream->dwSize)
 248     {
 249       ME_StreamInFill(stream);
 250       if (stream->editstream->dwError)
 251         break;
 252       if (!stream->dwSize)
 253         break;
 254     }
 255
 256     if (!(dwFormat & SF_UNICODE))
 257     {
 258       /* FIXME? this is doomed to fail on true MBCS like UTF-8, luckily they're unlikely to be used as CP_ACP */
 259       nWideChars = MultiByteToWideChar(CP_ACP, 0, stream->buffer, stream->dwSize, wszText, STREAMIN_BUFFER_SIZE);
 260       pText = wszText;
 261     }
 262     else
 263     {
 264       nWideChars = stream->dwSize >> 1;
 265       pText = (WCHAR *)stream->buffer;
 266     }
 267
 268     ME_InsertTextFromCursor(editor, 0, pText, nWideChars, style);
 269     if (stream->dwSize < STREAMIN_BUFFER_SIZE)
 270       break;
 271   } while(1);
 272   ME_CommitUndo(editor);
 273   ME_Repaint(editor);
 274   return 0;
 275 }
 276
 277 void ME_RTFCharAttrHook(RTF_Info *info)
 278 {
 279   CHARFORMAT2W fmt;
 280   fmt.cbSize = sizeof(fmt);
 281   fmt.dwMask = 0;
 282
 283   switch(info->rtfMinor)
 284   {
 285     case rtfPlain:
 286       /* FIXME add more flags once they're implemented */
 287       fmt.dwMask = CFM_BOLD | CFM_ITALIC | CFM_UNDERLINE | CFM_STRIKEOUT | CFM_COLOR | CFM_BACKCOLOR | CFM_SIZE | CFM_WEIGHT;
 288       fmt.dwEffects = CFE_AUTOCOLOR | CFE_AUTOBACKCOLOR;
 289       fmt.yHeight = 12*20; /* 12pt */
 290       fmt.wWeight = 400;
 291       break;
 292     case rtfBold:
 293       fmt.dwMask = CFM_BOLD;
 294       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 295       break;
 296     case rtfItalic:
 297       fmt.dwMask = CFM_ITALIC;
 298       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 299       break;
 300     case rtfUnderline:
 301       fmt.dwMask = CFM_UNDERLINE;
 302       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 303       break;
 304     case rtfStrikeThru:
 305       fmt.dwMask = CFM_STRIKEOUT;
 306       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 307       break;
 308     case rtfBackColor:
 309       fmt.dwMask = CFM_BACKCOLOR;
 310       fmt.dwEffects = 0;
 311       if (info->rtfParam == 0)
 312         fmt.dwEffects = CFE_AUTOBACKCOLOR;
 313       else if (info->rtfParam != rtfNoParam)
 314       {
 315         RTFColor *c = RTFGetColor(info, info->rtfParam);
 316         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 317       }
 318       break;
 319     case rtfForeColor:
 320       fmt.dwMask = CFM_COLOR;
 321       fmt.dwEffects = 0;
 322       if (info->rtfParam == 0)
 323         fmt.dwEffects = CFE_AUTOCOLOR;
 324       else if (info->rtfParam != rtfNoParam)
 325       {
 326         RTFColor *c = RTFGetColor(info, info->rtfParam);
 327         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 328       }
 329       break;
 330     case rtfFontNum:
 331       if (info->rtfParam != rtfNoParam)
 332       {
 333         RTFFont *f = RTFGetFont(info, info->rtfParam);
 334         if (f)
 335         {
 336           MultiByteToWideChar(CP_ACP, 0, f->rtfFName, -1, fmt.szFaceName, sizeof(fmt.szFaceName)/sizeof(WCHAR));
 337           fmt.szFaceName[sizeof(fmt.szFaceName)/sizeof(WCHAR)-1] = '\0';
 338           fmt.bCharSet = f->rtfFCharSet;
 339           fmt.dwMask = CFM_FACE | CFM_CHARSET;
 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 void
 436 ME_StreamInFill(ME_InStream *stream)
 437 {
 438   stream->editstream->dwError = stream->editstream->pfnCallback(stream->editstream->dwCookie,
 439                                                                 stream->buffer,
 440                                                                 sizeof(stream->buffer),
 441                                                                 &stream->dwSize);
 442   stream->dwUsed = 0;
 443 }
 444
 445 static LRESULT ME_StreamIn(ME_TextEditor *editor, DWORD format, EDITSTREAM *stream)
 446 {
 447   RTF_Info parser;
 448   ME_Style *style;
 449   int from, to, to2, nUndoMode;
 450   ME_UndoItem *pUI;
 451   int nEventMask = editor->nEventMask;
 452   ME_InStream inStream;
 453
 454   TRACE("%p %p\n", stream, editor->hWnd);
 455   editor->nEventMask = 0;
 456
 457   ME_GetSelection(editor, &from, &to);
 458   if (format & SFF_SELECTION) {
 459     style = ME_GetSelectionInsertStyle(editor);
 460
 461     ME_InternalDeleteText(editor, from, to-from);
 462   }
 463   else {
 464     style = editor->pBuffer->pDefaultStyle;
 465     ME_AddRefStyle(style);
 466     SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 467     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
 468     from = to = 0;
 469     ME_ClearTempStyle(editor);
 470     /* FIXME restore default paragraph formatting ! */
 471   }
 472
 473   nUndoMode = editor->nUndoMode;
 474   editor->nUndoMode = umIgnore;
 475
 476   inStream.editstream = stream;
 477   inStream.editstream->dwError = 0;
 478   inStream.dwSize = 0;
 479   inStream.dwUsed = 0;
 480
 481   if (format & SF_RTF)
 482   {
 483     /* Check if it's really RTF, and if it is not, use plain text */
 484     ME_StreamInFill(&inStream);
 485     if (!inStream.editstream->dwError)
 486     {
 487       if (strncmp(inStream.buffer, "{\\rtf1", 6) && strncmp(inStream.buffer, "{\\urtf", 6))
 488       {
 489         format &= ~SF_RTF;
 490         format |= SF_TEXT;
 491       }
 492     }
 493   }
 494
 495   if (!inStream.editstream->dwError)
 496   {
 497     if (format & SF_RTF) {
 498       /* setup the RTF parser */
 499       memset(&parser, 0, sizeof parser);
 500       RTFSetEditStream(&parser, &inStream);
 501       parser.rtfFormat = format&(SF_TEXT|SF_RTF);
 502       parser.hwndEdit = editor->hWnd;
 503       parser.editor = editor;
 504       parser.style = style;
 505       WriterInit(&parser);
 506       RTFInit(&parser);
 507       RTFSetReadHook(&parser, ME_RTFReadHook);
 508       BeginFile(&parser);
 509
 510       /* do the parsing */
 511       RTFRead(&parser);
 512       RTFFlushOutputBuffer(&parser);
 513       RTFDestroy(&parser);
 514
 515       style = parser.style;
 516     }
 517     else if (format & SF_TEXT)
 518       ME_StreamInText(editor, format, &inStream, style);
 519     else
 520       ERR("EM_STREAMIN without SF_TEXT or SF_RTF\n");
 521     ME_GetSelection(editor, &to, &to2);
 522     /* put the cursor at the top */
 523     if (!(format & SFF_SELECTION))
 524       SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 525     else
 526     {
 527       /* FIXME where to put cursor now ? */
 528     }
 529   }
 530
 531   editor->nUndoMode = nUndoMode;
 532   pUI = ME_AddUndoItem(editor, diUndoDeleteRun, NULL);
 533   TRACE("from %d to %d\n", from, to);
 534   if (pUI && from < to)
 535   {
 536     pUI->nStart = from;
 537     pUI->nLen = to-from;
 538   }
 539   ME_CommitUndo(editor);
 540   ME_ReleaseStyle(style);
 541   editor->nEventMask = nEventMask;
 542   InvalidateRect(editor->hWnd, NULL, TRUE);
 543   ME_UpdateRepaint(editor);
 544   if (!(format & SFF_SELECTION)) {
 545     ME_ClearTempStyle(editor);
 546   }
 547   ME_MoveCaret(editor);
 548   ME_SendSelChange(editor);
 549
 550   return 0;
 551 }
 552
 553
 554 ME_DisplayItem *
 555 ME_FindItemAtOffset(ME_TextEditor *editor, ME_DIType nItemType, int nOffset, int *nItemOffset)
 556 {
 557   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
 558
 559   while (item && item->member.para.next_para->member.para.nCharOfs <= nOffset)
 560     item = ME_FindItemFwd(item, diParagraph);
 561
 562   if (!item)
 563     return item;
 564
 565   nOffset -= item->member.para.nCharOfs;
 566   if (nItemType == diParagraph) {
 567     if (nItemOffset)
 568       *nItemOffset = nOffset;
 569     return item;
 570   }
 571
 572   do {
 573     item = ME_FindItemFwd(item, diRun);
 574   } while (item && (item->member.run.nCharOfs + ME_StrLen(item->member.run.strText) <= nOffset));
 575   if (item) {
 576     nOffset -= item->member.run.nCharOfs;
 577     if (nItemOffset)
 578       *nItemOffset = nOffset;
 579   }
 580   return item;
 581 }
 582
 583
 584 ME_TextEditor *ME_MakeEditor(HWND hWnd) {
 585   ME_TextEditor *ed = ALLOC_OBJ(ME_TextEditor);
 586   HDC hDC;
 587   int i;
 588   ed->hWnd = hWnd;
 589   ed->pBuffer = ME_MakeText();
 590   hDC = GetDC(hWnd);
 591   ME_MakeFirstParagraph(hDC, ed->pBuffer);
 592   ReleaseDC(hWnd, hDC);
 593   ed->bCaretShown = FALSE;
 594   ed->nCursors = 3;
 595   ed->pCursors = ALLOC_N_OBJ(ME_Cursor, ed->nCursors);
 596   ed->pCursors[0].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
 597   ed->pCursors[0].nOffset = 0;
 598   ed->pCursors[1].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
 599   ed->pCursors[1].nOffset = 0;
 600   ed->nLastTotalLength = ed->nTotalLength = 0;
 601   ed->nUDArrowX = -1;
 602   ed->nSequence = 0;
 603   ed->rgbBackColor = -1;
 604   ed->bCaretAtEnd = FALSE;
 605   ed->nEventMask = 0;
 606   ed->nModifyStep = 0;
 607   ed->pUndoStack = ed->pRedoStack = NULL;
 608   ed->nUndoMode = umAddToUndo;
 609   ed->nParagraphs = 1;
 610   ed->nLastSelStart = ed->nLastSelEnd = 0;
 611   ed->nScrollPosY = 0;
 612   for (i=0; i<HFONT_CACHE_SIZE; i++)
 613   {
 614     ed->pFontCache[i].nRefs = 0;
 615     ed->pFontCache[i].nAge = 0;
 616     ed->pFontCache[i].hFont = NULL;
 617   }
 618   ME_CheckCharOffsets(ed);
 619   return ed;
 620 }
 621
 622 typedef struct tagME_GlobalDestStruct
 623 {
 624   HGLOBAL hData;
 625   int nLength;
 626 } ME_GlobalDestStruct;
 627
 628 static DWORD CALLBACK ME_AppendToHGLOBAL(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 629 {
 630   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 631   int nMaxSize;
 632   BYTE *pDest;
 633
 634   nMaxSize = GlobalSize(pData->hData);
 635   if (pData->nLength+cb+1 >= cb)
 636   {
 637     /* round up to 2^17 */
 638     int nNewSize = (((nMaxSize+cb+1)|0x1FFFF)+1) & 0xFFFE0000;
 639     pData->hData = GlobalReAlloc(pData->hData, nNewSize, 0);
 640   }
 641   pDest = (BYTE *)GlobalLock(pData->hData);
 642   memcpy(pDest + pData->nLength, lpBuff, cb);
 643   pData->nLength += cb;
 644   pDest[pData->nLength] = '\0';
 645   GlobalUnlock(pData->hData);
 646   *pcb = cb;
 647
 648   return 0;
 649 }
 650
 651 static DWORD CALLBACK ME_ReadFromHGLOBALUnicode(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 652 {
 653   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 654   int i;
 655   WORD *pSrc, *pDest;
 656
 657   cb = cb >> 1;
 658   pDest = (WORD *)lpBuff;
 659   pSrc = (WORD *)GlobalLock(pData->hData);
 660   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
 661     pDest[i] = pSrc[pData->nLength+i];
 662   }
 663   pData->nLength += i;
 664   *pcb = 2*i;
 665   GlobalUnlock(pData->hData);
 666   return 0;
 667 }
 668
 669 static DWORD CALLBACK ME_ReadFromHGLOBALRTF(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 670 {
 671   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 672   int i;
 673   BYTE *pSrc, *pDest;
 674
 675   pDest = lpBuff;
 676   pSrc = (BYTE *)GlobalLock(pData->hData);
 677   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
 678     pDest[i] = pSrc[pData->nLength+i];
 679   }
 680   pData->nLength += i;
 681   *pcb = i;
 682   GlobalUnlock(pData->hData);
 683   return 0;
 684 }
 685
 686 void ME_DestroyEditor(ME_TextEditor *editor)
 687 {
 688   ME_DisplayItem *pFirst = editor->pBuffer->pFirst;
 689   ME_DisplayItem *p = pFirst, *pNext = NULL;
 690   int i;
 691
 692   ME_ClearTempStyle(editor);
 693   ME_EmptyUndoStack(editor);
 694   while(p) {
 695     pNext = p->next;
 696     ME_DestroyDisplayItem(p);
 697     p = pNext;
 698   }
 699   ME_ReleaseStyle(editor->pBuffer->pDefaultStyle);
 700   for (i=0; i<HFONT_CACHE_SIZE; i++)
 701   {
 702     if (editor->pFontCache[i].hFont)
 703       DeleteObject(editor->pFontCache[i].hFont);
 704   }
 705
 706   FREE_OBJ(editor);
 707 }
 708
 709 #define UNSUPPORTED_MSG(e) \
 710   case e: \
 711     FIXME(#e ": stub\n"); \
 712     return DefWindowProcW(hWnd, msg, wParam, lParam);
 713
 714 /******************************************************************
 715  *        RichEditANSIWndProc (RICHED20.10)
 716  */
 717 LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
 718   HDC hDC;
 719   PAINTSTRUCT ps;
 720   SCROLLINFO si;
 721   ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
 722   TRACE("msg %d %08x %08lx\n", msg, wParam, lParam);
 723   switch(msg) {
 724
 725   UNSUPPORTED_MSG(EM_AUTOURLDETECT)
 726   UNSUPPORTED_MSG(EM_CHARFROMPOS)
 727   UNSUPPORTED_MSG(EM_DISPLAYBAND)
 728   UNSUPPORTED_MSG(EM_EXLIMITTEXT)
 729   UNSUPPORTED_MSG(EM_EXLINEFROMCHAR)
 730   UNSUPPORTED_MSG(EM_FINDTEXT)
 731   UNSUPPORTED_MSG(EM_FINDTEXTEX)
 732   UNSUPPORTED_MSG(EM_FINDWORDBREAK)
 733   UNSUPPORTED_MSG(EM_FMTLINES)
 734   UNSUPPORTED_MSG(EM_FORMATRANGE)
 735   UNSUPPORTED_MSG(EM_GETFIRSTVISIBLELINE)
 736   UNSUPPORTED_MSG(EM_GETIMECOMPMODE)
 737   /* UNSUPPORTED_MSG(EM_GETIMESTATUS) missing in Wine headers */
 738   UNSUPPORTED_MSG(EM_GETLANGOPTIONS)
 739   UNSUPPORTED_MSG(EM_GETLIMITTEXT)
 740   UNSUPPORTED_MSG(EM_GETLINE)
 741   UNSUPPORTED_MSG(EM_GETLINECOUNT)
 742   /* UNSUPPORTED_MSG(EM_GETOLEINTERFACE) separate stub */
 743   UNSUPPORTED_MSG(EM_GETOPTIONS)
 744   UNSUPPORTED_MSG(EM_GETRECT)
 745   UNSUPPORTED_MSG(EM_GETREDONAME)
 746   UNSUPPORTED_MSG(EM_GETTEXTMODE)
 747   UNSUPPORTED_MSG(EM_GETUNDONAME)
 748   UNSUPPORTED_MSG(EM_GETWORDBREAKPROC)
 749   UNSUPPORTED_MSG(EM_GETWORDBREAKPROCEX)
 750   UNSUPPORTED_MSG(EM_HIDESELECTION)
 751   UNSUPPORTED_MSG(EM_LIMITTEXT) /* also known as EM_SETLIMITTEXT */
 752   UNSUPPORTED_MSG(EM_LINEFROMCHAR)
 753   UNSUPPORTED_MSG(EM_LINEINDEX)
 754   UNSUPPORTED_MSG(EM_LINELENGTH)
 755   UNSUPPORTED_MSG(EM_LINESCROLL)
 756   UNSUPPORTED_MSG(EM_PASTESPECIAL)
 757 /*  UNSUPPORTED_MSG(EM_POSFROMCHARS) missing in Wine headers */
 758   UNSUPPORTED_MSG(EM_REQUESTRESIZE)
 759   UNSUPPORTED_MSG(EM_SCROLL)
 760   UNSUPPORTED_MSG(EM_SCROLLCARET)
 761   UNSUPPORTED_MSG(EM_SELECTIONTYPE)
 762   UNSUPPORTED_MSG(EM_SETLANGOPTIONS)
 763   UNSUPPORTED_MSG(EM_SETOLECALLBACK)
 764   UNSUPPORTED_MSG(EM_SETOPTIONS)
 765   UNSUPPORTED_MSG(EM_SETRECT)
 766   UNSUPPORTED_MSG(EM_SETRECTNP)
 767   UNSUPPORTED_MSG(EM_SETTARGETDEVICE)
 768   UNSUPPORTED_MSG(EM_SETTEXTMODE)
 769   UNSUPPORTED_MSG(EM_SETUNDOLIMIT)
 770   UNSUPPORTED_MSG(EM_SETWORDBREAKPROC)
 771   UNSUPPORTED_MSG(EM_SETWORDBREAKPROCEX)
 772   UNSUPPORTED_MSG(WM_SETFONT)
 773   UNSUPPORTED_MSG(WM_STYLECHANGING)
 774   UNSUPPORTED_MSG(WM_STYLECHANGED)
 775 /*  UNSUPPORTED_MSG(WM_UNICHAR) FIXME missing in Wine headers */
 776
 777 /* Messages specific to Richedit controls */
 778
 779   case EM_STREAMIN:
 780    return ME_StreamIn(editor, wParam, (EDITSTREAM*)lParam);
 781   case EM_STREAMOUT:
 782    return ME_StreamOut(editor, wParam, (EDITSTREAM *)lParam);
 783   case WM_GETDLGCODE:
 784   {
 785     UINT code = DLGC_WANTCHARS|DLGC_WANTARROWS;
 786     if (GetWindowLongW(hWnd, GWL_STYLE)&ES_WANTRETURN)
 787       code |= 0; /* FIXME what can we do here ? ask for messages and censor them ? */
 788     return code;
 789   }
 790   case WM_NCCREATE:
 791   {
 792     CREATESTRUCTW *pcs = (CREATESTRUCTW *)lParam;
 793     editor = ME_MakeEditor(hWnd);
 794     SetWindowLongW(hWnd, 0, (long)editor);
 795     pcs = 0; /* ignore */
 796     return TRUE;
 797   }
 798   case EM_EMPTYUNDOBUFFER:
 799     ME_EmptyUndoStack(editor);
 800     return 0;
 801   case EM_GETSEL:
 802   {
 803     ME_GetSelection(editor, (int *)wParam, (int *)lParam);
 804     if (!((wParam|lParam) & 0xFFFF0000))
 805       return (lParam<<16)|wParam;
 806     return -1;
 807   }
 808   case EM_EXGETSEL:
 809   {
 810     CHARRANGE *pRange = (CHARRANGE *)lParam;
 811     ME_GetSelection(editor, (int *)&pRange->cpMin, (int *)&pRange->cpMax);
 812     return 0;
 813   }
 814   case EM_CANUNDO:
 815     return editor->pUndoStack != NULL;
 816   case EM_CANREDO:
 817     return editor->pRedoStack != NULL;
 818   case EM_UNDO:
 819     ME_Undo(editor);
 820     return 0;
 821   case EM_REDO:
 822     ME_Redo(editor);
 823     return 0;
 824   case EM_SETSEL:
 825   {
 826     ME_SetSelection(editor, wParam, lParam);
 827     ME_Repaint(editor);
 828     ME_SendSelChange(editor);
 829     return 0;
 830   }
 831   case EM_EXSETSEL:
 832   {
 833     CHARRANGE *pRange = (CHARRANGE *)lParam;
 834     ME_SetSelection(editor, pRange->cpMin, pRange->cpMax);
 835     /* FIXME optimize */
 836     ME_Repaint(editor);
 837     ME_SendSelChange(editor);
 838     return 0;
 839   }
 840   case EM_SETBKGNDCOLOR:
 841   {
 842     LRESULT lColor = ME_GetBackColor(editor);
 843     if (wParam)
 844       editor->rgbBackColor = -1;
 845     else
 846       editor->rgbBackColor = lParam;
 847     InvalidateRect(hWnd, NULL, TRUE);
 848     UpdateWindow(hWnd);
 849     return lColor;
 850   }
 851   case EM_GETMODIFY:
 852     return editor->nModifyStep == 0 ? 0 : 1;
 853   case EM_SETMODIFY:
 854   {
 855     if (wParam)
 856       editor->nModifyStep = 0x80000000;
 857     else
 858       editor->nModifyStep = 0;
 859
 860     return 0;
 861   }
 862   case EM_SETREADONLY:
 863   {
 864     long nStyle = GetWindowLongW(hWnd, GWL_STYLE);
 865     if (wParam)
 866       nStyle |= ES_READONLY;
 867     else
 868       nStyle &= ~ES_READONLY;
 869     SetWindowLongW(hWnd, GWL_STYLE, nStyle);
 870     ME_Repaint(editor);
 871     return 0;
 872   }
 873   case EM_SETEVENTMASK:
 874     editor->nEventMask = lParam;
 875     return 0;
 876   case EM_GETEVENTMASK:
 877     return editor->nEventMask;
 878   case EM_SETCHARFORMAT:
 879   {
 880     CHARFORMAT2W buf, *p;
 881     BOOL bRepaint = TRUE;
 882     p = ME_ToCF2W(&buf, (CHARFORMAT2W *)lParam);
 883     if (!wParam)
 884       ME_SetDefaultCharFormat(editor, p);
 885     else if (wParam == (SCF_WORD | SCF_SELECTION))
 886       FIXME("word selection not supported\n");
 887     else if (wParam == SCF_ALL)
 888       ME_SetCharFormat(editor, 0, ME_GetTextLength(editor), p);
 889     else {
 890       int from, to;
 891       ME_GetSelection(editor, &from, &to);
 892       bRepaint = (from != to);
 893       ME_SetSelectionCharFormat(editor, p);
 894     }
 895     ME_CommitUndo(editor);
 896     if (bRepaint)
 897       ME_UpdateRepaint(editor);
 898     return 0;
 899   }
 900   case EM_GETCHARFORMAT:
 901   {
 902     CHARFORMAT2W tmp;
 903     tmp.cbSize = sizeof(tmp);
 904     if (!wParam)
 905       ME_GetDefaultCharFormat(editor, &tmp);
 906     else
 907       ME_GetSelectionCharFormat(editor, &tmp);
 908     ME_CopyToCFAny((CHARFORMAT2W *)lParam, &tmp);
 909     return 0;
 910   }
 911   case EM_SETPARAFORMAT:
 912     ME_SetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
 913     ME_UpdateRepaint(editor);
 914     ME_CommitUndo(editor);
 915     return 0;
 916   case EM_GETPARAFORMAT:
 917     ME_GetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
 918     return 0;
 919   case WM_CLEAR:
 920   {
 921     int from, to;
 922     ME_GetSelection(editor, &from, &to);
 923     ME_InternalDeleteText(editor, from, to-from);
 924     ME_CommitUndo(editor);
 925     ME_UpdateRepaint(editor);
 926     return 0;
 927   }
 928   case EM_REPLACESEL:
 929   {
 930     int from, to;
 931     ME_Style *style;
 932     LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
 933     size_t len = lstrlenW(wszText);
 934     TRACE("EM_REPLACESEL - %s\n", debugstr_w(wszText));
 935
 936     ME_GetSelection(editor, &from, &to);
 937     style = ME_GetSelectionInsertStyle(editor);
 938     ME_InternalDeleteText(editor, from, to-from);
 939     ME_InsertTextFromCursor(editor, 0, wszText, len, style);
 940     ME_ReleaseStyle(style);
 941     ME_EndToUnicode(hWnd, wszText);
 942     /* drop temporary style if line end */
 943     /* FIXME question: does abc\n mean: put abc, clear temp style, put \n? (would require a change) */
 944     if (len>0 && wszText[len-1] == '\n')
 945       ME_ClearTempStyle(editor);
 946
 947     ME_CommitUndo(editor);
 948     if (!wParam)
 949       ME_EmptyUndoStack(editor);
 950     ME_UpdateRepaint(editor);
 951     return 0;
 952   }
 953   case WM_SETTEXT:
 954   {
 955     LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
 956     TRACE("WM_SETTEXT - %s\n", (char *)(wszText)); /* debugstr_w() */
 957     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
 958     /* uses default style! */
 959     ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
 960     ME_EndToUnicode(hWnd, wszText);
 961     ME_CommitUndo(editor);
 962     ME_EmptyUndoStack(editor);
 963     ME_UpdateRepaint(editor);
 964     return 0;
 965   }
 966   case EM_CANPASTE:
 967   {
 968     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
 969     if (IsClipboardFormatAvailable(nRTFFormat))
 970       return TRUE;
 971     if (IsClipboardFormatAvailable(CF_UNICODETEXT))
 972       return TRUE;
 973     return FALSE;
 974   }
 975   case WM_PASTE:
 976   {
 977     DWORD dwFormat = 0;
 978     EDITSTREAM es;
 979     ME_GlobalDestStruct gds;
 980     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
 981     UINT cf = 0;
 982
 983     if (IsClipboardFormatAvailable(nRTFFormat))
 984       cf = nRTFFormat, dwFormat = SF_RTF;
 985     else if (IsClipboardFormatAvailable(CF_UNICODETEXT))
 986       cf = CF_UNICODETEXT, dwFormat = SF_TEXT|SF_UNICODE;
 987     else
 988       return 0;
 989
 990     if (!OpenClipboard(hWnd))
 991       return 0;
 992     gds.hData = GetClipboardData(cf);
 993     gds.nLength = 0;
 994     es.dwCookie = (DWORD)&gds;
 995     es.pfnCallback = dwFormat == SF_RTF ? ME_ReadFromHGLOBALRTF : ME_ReadFromHGLOBALUnicode;
 996     SendMessageW(hWnd, EM_STREAMIN, dwFormat|SFF_SELECTION, (LPARAM)&es);
 997
 998     CloseClipboard();
 999     return 0;
1000   }
1001   case WM_CUT:
1002   case WM_COPY:
1003   {
1004     int from, to, pars;
1005     WCHAR *data;
1006     HANDLE hData;
1007     EDITSTREAM es;
1008     ME_GlobalDestStruct gds;
1009
1010     if (!OpenClipboard(hWnd))
1011       return 0;
1012
1013     EmptyClipboard();
1014     ME_GetSelection(editor, &from, &to);
1015     pars = ME_CountParagraphsBetween(editor, from, to);
1016     hData = GlobalAlloc(GMEM_MOVEABLE, sizeof(WCHAR)*(to-from+pars+1));
1017     data = (WCHAR *)GlobalLock(hData);
1018     ME_GetTextW(editor, data, from, to-from, TRUE);
1019     GlobalUnlock(hData);
1020
1021     gds.hData = GlobalAlloc(GMEM_MOVEABLE, 0);
1022     gds.nLength = 0;
1023     es.dwCookie = (DWORD)&gds;
1024     es.pfnCallback = ME_AppendToHGLOBAL;
1025     SendMessageW(hWnd, EM_STREAMOUT, SFF_SELECTION|SF_RTF, (LPARAM)&es);
1026     GlobalReAlloc(gds.hData, gds.nLength+1, 0);
1027
1028     SetClipboardData(CF_UNICODETEXT, hData);
1029     SetClipboardData(RegisterClipboardFormatA("Rich Text Format"), gds.hData);
1030
1031     CloseClipboard();
1032     if (msg == WM_CUT)
1033     {
1034       ME_InternalDeleteText(editor, from, to-from);
1035       ME_CommitUndo(editor);
1036       ME_UpdateRepaint(editor);
1037     }
1038     return 0;
1039   }
1040   case WM_GETTEXTLENGTH:
1041     return ME_GetTextLength(editor);
1042   case WM_GETTEXT:
1043   {
1044     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1045     tr.chrg.cpMin = 0;
1046     tr.chrg.cpMax = wParam-1;
1047     tr.lpstrText = (WCHAR *)lParam;
1048     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1049   }
1050   case EM_GETSELTEXT:
1051   {
1052     int from, to;
1053     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1054     ME_GetSelection(editor, &from, &to);
1055     tr.chrg.cpMin = from;
1056     tr.chrg.cpMax = to;
1057     tr.lpstrText = (WCHAR *)lParam;
1058     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1059   }
1060   case EM_GETTEXTRANGE:
1061   {
1062     TEXTRANGEW *rng = (TEXTRANGEW *)lParam;
1063     if (IsWindowUnicode(hWnd))
1064       return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, FALSE);
1065     else
1066     {
1067       int nLen = rng->chrg.cpMax-rng->chrg.cpMin;
1068       WCHAR *p = ALLOC_N_OBJ(WCHAR, nLen+1);
1069       int nChars = ME_GetTextW(editor, p, rng->chrg.cpMin, nLen, FALSE);
1070       /* FIXME this is a potential security hole (buffer overrun)
1071          if you know more about wchar->mbyte conversion please explain
1072       */
1073       WideCharToMultiByte(CP_ACP, 0, p, nChars+1, (char *)rng->lpstrText, nLen+1, NULL, NULL);
1074       FREE_OBJ(p);
1075       return nChars;
1076     }
1077     return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, FALSE);
1078   }
1079   case WM_CREATE:
1080     ME_CommitUndo(editor);
1081     ME_WrapMarkedParagraphs(editor);
1082     ME_MoveCaret(editor);
1083     return 0;
1084   case WM_DESTROY:
1085     ME_DestroyEditor(editor);
1086     SetWindowLongW(hWnd, 0, 0);
1087     return 0;
1088   case WM_LBUTTONDOWN:
1089     SetFocus(hWnd);
1090     ME_LButtonDown(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1091     SetCapture(hWnd);
1092     break;
1093   case WM_MOUSEMOVE:
1094     if (GetCapture() == hWnd)
1095       ME_MouseMove(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1096     break;
1097   case WM_LBUTTONUP:
1098     if (GetCapture() == hWnd)
1099       ReleaseCapture();
1100     break;
1101   case WM_PAINT:
1102     hDC = BeginPaint(hWnd, &ps);
1103     ME_PaintContent(editor, hDC, FALSE, &ps.rcPaint);
1104     EndPaint(hWnd, &ps);
1105     break;
1106   case WM_SETFOCUS:
1107     ME_ShowCaret(editor);
1108     ME_SendOldNotify(editor, EN_SETFOCUS);
1109     return 0;
1110   case WM_KILLFOCUS:
1111     ME_HideCaret(editor);
1112     ME_SendOldNotify(editor, EN_KILLFOCUS);
1113     return 0;
1114   case WM_ERASEBKGND:
1115   {
1116     HDC hDC = (HDC)wParam;
1117     RECT rc;
1118     COLORREF rgbBG = ME_GetBackColor(editor);
1119     if (GetUpdateRect(hWnd,&rc,TRUE))
1120     {
1121       HBRUSH hbr = CreateSolidBrush(rgbBG);
1122       FillRect(hDC, &rc, hbr);
1123       DeleteObject(hbr);
1124     }
1125     return 1;
1126   }
1127   case WM_COMMAND:
1128     TRACE("editor wnd command = %d\n", LOWORD(wParam));
1129     return 0;
1130   case WM_KEYDOWN:
1131     if (ME_ArrowKey(editor, LOWORD(wParam), GetKeyState(VK_CONTROL)<0)) {
1132       ME_CommitUndo(editor);
1133       ME_EnsureVisible(editor, editor->pCursors[0].pRun);
1134       HideCaret(hWnd);
1135       ME_MoveCaret(editor);
1136       ShowCaret(hWnd);
1137       return 0;
1138     }
1139     if (GetKeyState(VK_CONTROL)<0)
1140     {
1141       if (LOWORD(wParam)=='W')
1142       {
1143         CHARFORMAT2W chf;
1144         char buf[2048];
1145         ME_GetSelectionCharFormat(editor, &chf);
1146         ME_DumpStyleToBuf(&chf, buf);
1147         MessageBoxA(NULL, buf, "Style dump", MB_OK);
1148       }
1149       if (LOWORD(wParam)=='Q')
1150       {
1151         ME_CheckCharOffsets(editor);
1152       }
1153     }
1154     goto do_default;
1155   case WM_CHAR:
1156   {
1157     WCHAR wstr;
1158     if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY) {
1159       MessageBeep(MB_ICONERROR);
1160       return 0; /* FIXME really 0 ? */
1161     }
1162     wstr = LOWORD(wParam);
1163     if (((unsigned)wstr)>=' ' || wstr=='\r') {
1164       /* FIXME maybe it would make sense to call EM_REPLACESEL instead ? */
1165       ME_Style *style = ME_GetInsertStyle(editor, 0);
1166       ME_SaveTempStyle(editor);
1167       ME_InsertTextFromCursor(editor, 0, &wstr, 1, style);
1168       ME_ReleaseStyle(style);
1169       ME_CommitUndo(editor);
1170       ME_UpdateRepaint(editor);
1171     }
1172     return 0;
1173   }
1174   case WM_VSCROLL:
1175   {
1176     int nPos = editor->nScrollPosY;
1177     si.cbSize = sizeof(SCROLLINFO);
1178     si.fMask = SIF_PAGE|SIF_POS|SIF_RANGE|SIF_TRACKPOS;
1179     GetScrollInfo(hWnd, SB_VERT, &si);
1180     switch(LOWORD(wParam)) {
1181     case SB_LINEUP:
1182       nPos -= 24; /* FIXME follow the original */
1183       if (nPos<0) nPos = 0;
1184       break;
1185     case SB_LINEDOWN:
1186     {
1187       int nEnd = editor->nTotalLength - editor->sizeWindow.cy;
1188       nPos += 24; /* FIXME follow the original */
1189       if (nPos>=nEnd) nPos = nEnd;
1190       break;
1191     }
1192     case SB_PAGEUP:
1193       nPos -= editor->sizeWindow.cy;
1194       if (nPos<0) nPos = 0;
1195       break;
1196     case SB_PAGEDOWN:
1197       nPos += editor->sizeWindow.cy;
1198       if (nPos>=editor->nTotalLength) nPos = editor->nTotalLength-1;
1199       break;
1200     case SB_THUMBTRACK:
1201     case SB_THUMBPOSITION:
1202       nPos = si.nTrackPos;
1203       break;
1204     }
1205     if (nPos != editor->nScrollPosY) {
1206       ScrollWindow(hWnd, 0, editor->nScrollPosY-nPos, NULL, NULL);
1207       editor->nScrollPosY = nPos;
1208       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1209       UpdateWindow(hWnd);
1210     }
1211     break;
1212   }
1213   case WM_MOUSEWHEEL:
1214   {
1215     int gcWheelDelta = 0, nPos = editor->nScrollPosY;
1216     UINT pulScrollLines;
1217
1218     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
1219     gcWheelDelta -= GET_WHEEL_DELTA_WPARAM(wParam);
1220     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
1221       nPos += pulScrollLines * (gcWheelDelta / WHEEL_DELTA) * 8;
1222     if(nPos>=editor->nTotalLength)
1223       nPos = editor->nTotalLength - 1;
1224     if (nPos<0)
1225       nPos = 0;
1226     if (nPos != editor->nScrollPosY) {
1227       ScrollWindow(hWnd, 0, editor->nScrollPosY-nPos, NULL, NULL);
1228       editor->nScrollPosY = nPos;
1229       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1230       UpdateWindow(hWnd);
1231     }
1232     break;
1233   }
1234   case WM_SIZE:
1235   {
1236     ME_MarkAllForWrapping(editor);
1237     ME_WrapMarkedParagraphs(editor);
1238     ME_UpdateScrollBar(editor);
1239     ME_Repaint(editor);
1240     return DefWindowProcW(hWnd, msg, wParam, lParam);
1241   }
1242   case EM_GETOLEINTERFACE:
1243   {
1244     LPVOID *ppvObj = (LPVOID*) lParam;
1245     FIXME("EM_GETOLEINTERFACE %p: stub\n", ppvObj);
1246     return CreateIRichEditOle(ppvObj);
1247   }
1248   default:
1249   do_default:
1250     return DefWindowProcW(hWnd, msg, wParam, lParam);
1251   }
1252   return 0L;
1253 }
1254
1255 /******************************************************************
1256  *        RichEdit10ANSIWndProc (RICHED20.9)
1257  */
1258 LRESULT WINAPI RichEdit10ANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1259 {
1260   /* FIXME: this is NOT the same as 2.0 version */
1261   return RichEditANSIWndProc(hWnd, msg, wParam, lParam);
1262 }
1263
1264 void ME_SendOldNotify(ME_TextEditor *editor, int nCode)
1265 {
1266   HWND hWnd = editor->hWnd;
1267   SendMessageA(GetParent(hWnd), WM_COMMAND, (nCode<<16)|GetWindowLongW(hWnd, GWLP_ID), (LPARAM)hWnd);
1268 }
1269
1270 int ME_CountParagraphsBetween(ME_TextEditor *editor, int from, int to)
1271 {
1272   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
1273   int i = 0;
1274
1275   while(item && item->member.para.next_para->member.para.nCharOfs <= from)
1276     item = item->member.para.next_para;
1277   if (!item)
1278     return 0;
1279   while(item && item->member.para.next_para->member.para.nCharOfs <= to) {
1280     item = item->member.para.next_para;
1281     i++;
1282   }
1283   return i;
1284 }
1285
1286
1287 int ME_GetTextW(ME_TextEditor *editor, WCHAR *buffer, int nStart, int nChars, int bCRLF)
1288 {
1289   ME_DisplayItem *item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
1290   int nWritten = 0;
1291
1292   if (!item) {
1293     *buffer = L'\0';
1294     return 0;
1295   }
1296   assert(item);
1297
1298   if (nStart)
1299   {
1300     int nLen = ME_StrLen(item->member.run.strText) - nStart;
1301     if (nLen > nChars)
1302       nLen = nChars;
1303     CopyMemory(buffer, item->member.run.strText->szData + nStart, sizeof(WCHAR)*nLen);
1304     nChars -= nLen;
1305     nWritten += nLen;
1306     if (!nChars)
1307       return nWritten;
1308     buffer += nLen;
1309     nStart = 0;
1310     item = ME_FindItemFwd(item, diRun);
1311   }
1312
1313   while(nChars && item)
1314   {
1315     int nLen = ME_StrLen(item->member.run.strText);
1316     if (nLen > nChars)
1317       nLen = nChars;
1318
1319     if (item->member.run.nFlags & MERF_ENDPARA)
1320     {
1321       if (bCRLF) {
1322         *buffer++ = '\r';
1323         nWritten++;
1324       }
1325       *buffer = '\n';
1326       assert(nLen == 1);
1327     }
1328     else
1329       CopyMemory(buffer, item->member.run.strText->szData, sizeof(WCHAR)*nLen);
1330     nChars -= nLen;
1331     nWritten += nLen;
1332     buffer += nLen;
1333
1334     if (!nChars)
1335     {
1336       *buffer = L'\0';
1337       return nWritten;
1338     }
1339     item = ME_FindItemFwd(item, diRun);
1340   }
1341   *buffer = L'\0';
1342   return nWritten;
1343 }
1344
1345 static WCHAR wszClassName[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '2', '0', 'W', 0};
1346 static WCHAR wszClassName50[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '5', '0', 'W', 0};
1347
1348 void ME_RegisterEditorClass(HINSTANCE hInstance)
1349 {
1350   BOOL bResult;
1351   WNDCLASSW wcW;
1352   WNDCLASSA wcA;
1353
1354   wcW.style = CS_HREDRAW | CS_VREDRAW;
1355   wcW.lpfnWndProc = RichEditANSIWndProc;
1356   wcW.cbClsExtra = 0;
1357   wcW.cbWndExtra = 4;
1358   wcW.hInstance = NULL; /* hInstance would register DLL-local class */
1359   wcW.hIcon = NULL;
1360   wcW.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
1361   wcW.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
1362   wcW.lpszMenuName = NULL;
1363   wcW.lpszClassName = wszClassName;
1364   bResult = RegisterClassW(&wcW);
1365   assert(bResult);
1366   wcW.lpszClassName = wszClassName50;
1367   bResult = RegisterClassW(&wcW);
1368   assert(bResult);
1369
1370   wcA.style = CS_HREDRAW | CS_VREDRAW;
1371   wcA.lpfnWndProc = RichEditANSIWndProc;
1372   wcA.cbClsExtra = 0;
1373   wcA.cbWndExtra = 4;
1374   wcA.hInstance = NULL; /* hInstance would register DLL-local class */
1375   wcA.hIcon = NULL;
1376   wcA.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
1377   wcA.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
1378   wcA.lpszMenuName = NULL;
1379   wcA.lpszClassName = "RichEdit20A";
1380   bResult = RegisterClassA(&wcA);
1381   assert(bResult);
1382   wcA.lpszClassName = "RichEdit50A";
1383   bResult = RegisterClassA(&wcA);
1384   assert(bResult);
1385 }
1386
1387 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
1388 {
1389     TRACE("\n");
1390     switch (fdwReason)
1391     {
1392     case DLL_PROCESS_ATTACH:
1393       DisableThreadLibraryCalls(hinstDLL);
1394       me_heap = HeapCreate (0, 0x10000, 0);
1395       ME_RegisterEditorClass(hinstDLL);
1396       break;
1397
1398     case DLL_PROCESS_DETACH:
1399       UnregisterClassW(wszClassName, 0);
1400       UnregisterClassW(wszClassName50, 0);
1401       UnregisterClassA("RichEdit20A", 0);
1402       UnregisterClassA("RichEdit50A", 0);
1403       HeapDestroy (me_heap);
1404       me_heap = NULL;
1405       break;
1406     }
1407     return TRUE;
1408 }
1409
1410 /******************************************************************
1411  *        CreateTextServices (RICHED20.4)
1412  *
1413  * FIXME should be ITextHost instead of void*
1414  */
1415 HRESULT WINAPI CreateTextServices(IUnknown *punkOuter, void *pITextHost,
1416     IUnknown **ppUnk)
1417 {
1418   FIXME("stub\n");
1419   /* FIXME should support aggregation */
1420   if (punkOuter)
1421     return CLASS_E_NOAGGREGATION;
1422
1423   return E_FAIL; /* E_NOTIMPL isn't allowed by MSDN */
1424 }
1425
1426 /******************************************************************
1427  *        REExtendedRegisterClass (RICHED20.8)
1428  *
1429  * FIXME undocumented
1430  */
1431 void WINAPI REExtendedRegisterClass(void)
1432 {
1433   FIXME("stub\n");
1434 }