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 #define STREAMIN_BUFFER_SIZE 4096 /* M$ compatibility */
 237
 238 static LRESULT ME_StreamInText(ME_TextEditor *editor, DWORD dwFormat, EDITSTREAM *stream, ME_Style *style)
 239 {
 240   BYTE buffer[STREAMIN_BUFFER_SIZE+1];
 241   WCHAR wszText[STREAMIN_BUFFER_SIZE+1];
 242
 243   TRACE("%08lx %p\n", dwFormat, stream);
 244   stream->dwError = 0;
 245
 246   do {
 247     long nDataSize = 0, nWideChars = 0;
 248     stream->dwError = stream->pfnCallback(stream->dwCookie,
 249       (dwFormat & SF_UNICODE ? (BYTE *)wszText : buffer),
 250       STREAMIN_BUFFER_SIZE, &nDataSize);
 251
 252     if (stream->dwError)
 253       break;
 254     if (!nDataSize)
 255       break;
 256
 257     if (!(dwFormat & SF_UNICODE))
 258     {
 259       /* FIXME? this is doomed to fail on true MBCS like UTF-8, luckily they're unlikely to be used as CP_ACP */
 260       nWideChars = MultiByteToWideChar(CP_ACP, 0, buffer, nDataSize, wszText, STREAMIN_BUFFER_SIZE);
 261     }
 262     else
 263       nWideChars = nDataSize>>1;
 264     ME_InsertTextFromCursor(editor, 0, wszText, nWideChars, style);
 265     if (nDataSize<STREAMIN_BUFFER_SIZE)
 266       break;
 267   } while(1);
 268   ME_CommitUndo(editor);
 269   ME_Repaint(editor);
 270   return 0;
 271 }
 272
 273 void ME_RTFCharAttrHook(RTF_Info *info)
 274 {
 275   CHARFORMAT2W fmt;
 276   fmt.cbSize = sizeof(fmt);
 277   fmt.dwMask = 0;
 278
 279   switch(info->rtfMinor)
 280   {
 281     case rtfPlain:
 282       /* FIXME add more flags once they're implemented */
 283       fmt.dwMask = CFM_BOLD | CFM_ITALIC | CFM_UNDERLINE | CFM_STRIKEOUT | CFM_COLOR | CFM_BACKCOLOR | CFM_SIZE | CFM_WEIGHT;
 284       fmt.dwEffects = CFE_AUTOCOLOR | CFE_AUTOBACKCOLOR;
 285       fmt.yHeight = 12*20; /* 12pt */
 286       fmt.wWeight = 400;
 287       break;
 288     case rtfBold:
 289       fmt.dwMask = CFM_BOLD;
 290       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 291       break;
 292     case rtfItalic:
 293       fmt.dwMask = CFM_ITALIC;
 294       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 295       break;
 296     case rtfUnderline:
 297       fmt.dwMask = CFM_UNDERLINE;
 298       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 299       break;
 300     case rtfStrikeThru:
 301       fmt.dwMask = CFM_STRIKEOUT;
 302       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 303       break;
 304     case rtfBackColor:
 305       fmt.dwMask = CFM_BACKCOLOR;
 306       fmt.dwEffects = 0;
 307       if (info->rtfParam == 0)
 308         fmt.dwEffects = CFE_AUTOBACKCOLOR;
 309       else if (info->rtfParam != rtfNoParam)
 310       {
 311         RTFColor *c = RTFGetColor(info, info->rtfParam);
 312         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 313       }
 314       break;
 315     case rtfForeColor:
 316       fmt.dwMask = CFM_COLOR;
 317       fmt.dwEffects = 0;
 318       if (info->rtfParam == 0)
 319         fmt.dwEffects = CFE_AUTOCOLOR;
 320       else if (info->rtfParam != rtfNoParam)
 321       {
 322         RTFColor *c = RTFGetColor(info, info->rtfParam);
 323         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 324       }
 325       break;
 326     case rtfFontNum:
 327       if (info->rtfParam != rtfNoParam)
 328       {
 329         RTFFont *f = RTFGetFont(info, info->rtfParam);
 330         if (f)
 331         {
 332           MultiByteToWideChar(CP_ACP, 0, f->rtfFName, -1, fmt.szFaceName, sizeof(fmt.szFaceName)/sizeof(WCHAR));
 333           fmt.szFaceName[sizeof(fmt.szFaceName)/sizeof(WCHAR)-1] = '\0';
 334           fmt.bCharSet = f->rtfFCharSet;
 335           fmt.dwMask = CFM_FACE | CFM_CHARSET;
 336         }
 337       }
 338       break;
 339     case rtfFontSize:
 340       fmt.dwMask = CFM_SIZE;
 341       if (info->rtfParam != rtfNoParam)
 342         fmt.yHeight = info->rtfParam*10;
 343       break;
 344   }
 345   if (fmt.dwMask) {
 346     ME_Style *style2;
 347     RTFFlushOutputBuffer(info);
 348     /* FIXME too slow ? how come ? */
 349     style2 = ME_ApplyStyle(info->style, &fmt);
 350     ME_ReleaseStyle(info->style);
 351     info->style = style2;
 352   }
 353 }
 354
 355 void ME_RTFParAttrHook(RTF_Info *info)
 356 {
 357   PARAFORMAT2 fmt;
 358   fmt.cbSize = sizeof(fmt);
 359   fmt.dwMask = 0;
 360
 361   switch(info->rtfMinor)
 362   {
 363   case rtfParDef: /* I'm not 100% sure what does it do, but I guess it restores default paragraph attributes */
 364     fmt.dwMask = PFM_ALIGNMENT;
 365     fmt.wAlignment = PFA_LEFT;
 366     break;
 367   case rtfQuadLeft:
 368   case rtfQuadJust:
 369     fmt.dwMask = PFM_ALIGNMENT;
 370     fmt.wAlignment = PFA_LEFT;
 371     break;
 372   case rtfQuadRight:
 373     fmt.dwMask = PFM_ALIGNMENT;
 374     fmt.wAlignment = PFA_RIGHT;
 375     break;
 376   case rtfQuadCenter:
 377     fmt.dwMask = PFM_ALIGNMENT;
 378     fmt.wAlignment = PFA_CENTER;
 379     break;
 380   }
 381   if (fmt.dwMask) {
 382     RTFFlushOutputBuffer(info);
 383     /* FIXME too slow ? how come ?*/
 384     ME_SetSelectionParaFormat(info->editor, &fmt);
 385   }
 386 }
 387
 388 void ME_RTFReadHook(RTF_Info *info) {
 389   switch(info->rtfClass)
 390   {
 391     case rtfGroup:
 392       switch(info->rtfMajor)
 393       {
 394         case rtfBeginGroup:
 395           if (info->stackTop < maxStack) {
 396             memcpy(&info->stack[info->stackTop].fmt, &info->style->fmt, sizeof(CHARFORMAT2W));
 397             info->stack[info->stackTop].codePage = info->codePage;
 398             info->stack[info->stackTop].unicodeLength = info->unicodeLength;
 399           }
 400           info->stackTop++;
 401           break;
 402         case rtfEndGroup:
 403         {
 404           ME_Style *s;
 405           RTFFlushOutputBuffer(info);
 406           info->stackTop--;
 407           /* FIXME too slow ? how come ? */
 408           s = ME_ApplyStyle(info->style, &info->stack[info->stackTop].fmt);
 409           ME_ReleaseStyle(info->style);
 410           info->style = s;
 411           info->codePage = info->stack[info->stackTop].codePage;
 412           info->unicodeLength = info->stack[info->stackTop].unicodeLength;
 413           break;
 414         }
 415       }
 416       break;
 417     case rtfControl:
 418       switch(info->rtfMajor)
 419       {
 420         case rtfCharAttr:
 421           ME_RTFCharAttrHook(info);
 422           break;
 423         case rtfParAttr:
 424           ME_RTFParAttrHook(info);
 425           break;
 426       }
 427       break;
 428   }
 429 }
 430
 431 static LRESULT ME_StreamIn(ME_TextEditor *editor, DWORD format, EDITSTREAM *stream)
 432 {
 433   RTF_Info parser;
 434   ME_Style *style;
 435   int from, to, to2, nUndoMode;
 436   ME_UndoItem *pUI;
 437   int nEventMask = editor->nEventMask;
 438
 439   TRACE("%p %p\n", stream, editor->hWnd);
 440   editor->nEventMask = 0;
 441
 442   ME_GetSelection(editor, &from, &to);
 443   if (format & SFF_SELECTION) {
 444     style = ME_GetSelectionInsertStyle(editor);
 445
 446     ME_InternalDeleteText(editor, from, to-from);
 447   }
 448   else {
 449     style = editor->pBuffer->pDefaultStyle;
 450     ME_AddRefStyle(style);
 451     SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 452     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
 453     from = to = 0;
 454     ME_ClearTempStyle(editor);
 455     /* FIXME restore default paragraph formatting ! */
 456   }
 457
 458   nUndoMode = editor->nUndoMode;
 459   editor->nUndoMode = umIgnore;
 460   if (format & SF_RTF) {
 461     /* setup the RTF parser */
 462     memset(&parser, 0, sizeof parser);
 463     RTFSetEditStream(&parser, stream);
 464     parser.rtfFormat = format&(SF_TEXT|SF_RTF);
 465     parser.hwndEdit = editor->hWnd;
 466     parser.editor = editor;
 467     parser.style = style;
 468     WriterInit(&parser);
 469     RTFInit(&parser);
 470     RTFSetReadHook(&parser, ME_RTFReadHook);
 471     BeginFile(&parser);
 472
 473     /* do the parsing */
 474     RTFRead(&parser);
 475     RTFFlushOutputBuffer(&parser);
 476     RTFDestroy(&parser);
 477
 478     style = parser.style;
 479   }
 480   else if (format & SF_TEXT)
 481     ME_StreamInText(editor, format, stream, style);
 482   else
 483     ERR("EM_STREAMIN without SF_TEXT or SF_RTF\n");
 484   ME_GetSelection(editor, &to, &to2);
 485   /* put the cursor at the top */
 486   if (!(format & SFF_SELECTION))
 487     SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 488   else
 489   {
 490     /* FIXME where to put cursor now ? */
 491   }
 492
 493   editor->nUndoMode = nUndoMode;
 494   pUI = ME_AddUndoItem(editor, diUndoDeleteRun, NULL);
 495   TRACE("from %d to %d\n", from, to);
 496   if (pUI && from < to)
 497   {
 498     pUI->nStart = from;
 499     pUI->nLen = to-from;
 500   }
 501   ME_CommitUndo(editor);
 502   ME_ReleaseStyle(style);
 503   editor->nEventMask = nEventMask;
 504   InvalidateRect(editor->hWnd, NULL, TRUE);
 505   ME_UpdateRepaint(editor);
 506   if (!(format & SFF_SELECTION)) {
 507     ME_ClearTempStyle(editor);
 508   }
 509   ME_MoveCaret(editor);
 510   ME_SendSelChange(editor);
 511
 512   return 0;
 513 }
 514
 515
 516 ME_DisplayItem *
 517 ME_FindItemAtOffset(ME_TextEditor *editor, ME_DIType nItemType, int nOffset, int *nItemOffset)
 518 {
 519   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
 520
 521   while (item && item->member.para.next_para->member.para.nCharOfs <= nOffset)
 522     item = ME_FindItemFwd(item, diParagraph);
 523
 524   if (!item)
 525     return item;
 526
 527   nOffset -= item->member.para.nCharOfs;
 528   if (nItemType == diParagraph) {
 529     if (nItemOffset)
 530       *nItemOffset = nOffset;
 531     return item;
 532   }
 533
 534   do {
 535     item = ME_FindItemFwd(item, diRun);
 536   } while (item && (item->member.run.nCharOfs + ME_StrLen(item->member.run.strText) <= nOffset));
 537   if (item) {
 538     nOffset -= item->member.run.nCharOfs;
 539     if (nItemOffset)
 540       *nItemOffset = nOffset;
 541   }
 542   return item;
 543 }
 544
 545
 546 ME_TextEditor *ME_MakeEditor(HWND hWnd) {
 547   ME_TextEditor *ed = ALLOC_OBJ(ME_TextEditor);
 548   HDC hDC;
 549   int i;
 550   ed->hWnd = hWnd;
 551   ed->pBuffer = ME_MakeText();
 552   hDC = GetDC(hWnd);
 553   ME_MakeFirstParagraph(hDC, ed->pBuffer);
 554   ReleaseDC(hWnd, hDC);
 555   ed->bCaretShown = FALSE;
 556   ed->nCursors = 3;
 557   ed->pCursors = ALLOC_N_OBJ(ME_Cursor, ed->nCursors);
 558   ed->pCursors[0].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
 559   ed->pCursors[0].nOffset = 0;
 560   ed->pCursors[1].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
 561   ed->pCursors[1].nOffset = 0;
 562   ed->nLastTotalLength = ed->nTotalLength = 0;
 563   ed->nUDArrowX = -1;
 564   ed->nSequence = 0;
 565   ed->rgbBackColor = -1;
 566   ed->bCaretAtEnd = FALSE;
 567   ed->nEventMask = 0;
 568   ed->nModifyStep = 0;
 569   ed->pUndoStack = ed->pRedoStack = NULL;
 570   ed->nUndoMode = umAddToUndo;
 571   ed->nParagraphs = 1;
 572   ed->nLastSelStart = ed->nLastSelEnd = 0;
 573   ed->nScrollPosY = 0;
 574   for (i=0; i<HFONT_CACHE_SIZE; i++)
 575   {
 576     ed->pFontCache[i].nRefs = 0;
 577     ed->pFontCache[i].nAge = 0;
 578     ed->pFontCache[i].hFont = NULL;
 579   }
 580   ME_CheckCharOffsets(ed);
 581   return ed;
 582 }
 583
 584 typedef struct tagME_GlobalDestStruct
 585 {
 586   HGLOBAL hData;
 587   int nLength;
 588 } ME_GlobalDestStruct;
 589
 590 static DWORD CALLBACK ME_AppendToHGLOBAL(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 591 {
 592   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 593   int nMaxSize;
 594   BYTE *pDest;
 595
 596   nMaxSize = GlobalSize(pData->hData);
 597   if (pData->nLength+cb+1 >= cb)
 598   {
 599     /* round up to 2^17 */
 600     int nNewSize = (((nMaxSize+cb+1)|0x1FFFF)+1) & 0xFFFE0000;
 601     pData->hData = GlobalReAlloc(pData->hData, nNewSize, 0);
 602   }
 603   pDest = (BYTE *)GlobalLock(pData->hData);
 604   memcpy(pDest + pData->nLength, lpBuff, cb);
 605   pData->nLength += cb;
 606   pDest[pData->nLength] = '\0';
 607   GlobalUnlock(pData->hData);
 608   *pcb = cb;
 609
 610   return 0;
 611 }
 612
 613 static DWORD CALLBACK ME_ReadFromHGLOBALUnicode(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 614 {
 615   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 616   int i;
 617   WORD *pSrc, *pDest;
 618
 619   cb = cb >> 1;
 620   pDest = (WORD *)lpBuff;
 621   pSrc = (WORD *)GlobalLock(pData->hData);
 622   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
 623     pDest[i] = pSrc[pData->nLength+i];
 624   }
 625   pData->nLength += i;
 626   *pcb = 2*i;
 627   GlobalUnlock(pData->hData);
 628   return 0;
 629 }
 630
 631 static DWORD CALLBACK ME_ReadFromHGLOBALRTF(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 632 {
 633   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 634   int i;
 635   BYTE *pSrc, *pDest;
 636
 637   pDest = lpBuff;
 638   pSrc = (BYTE *)GlobalLock(pData->hData);
 639   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
 640     pDest[i] = pSrc[pData->nLength+i];
 641   }
 642   pData->nLength += i;
 643   *pcb = i;
 644   GlobalUnlock(pData->hData);
 645   return 0;
 646 }
 647
 648 void ME_DestroyEditor(ME_TextEditor *editor)
 649 {
 650   ME_DisplayItem *pFirst = editor->pBuffer->pFirst;
 651   ME_DisplayItem *p = pFirst, *pNext = NULL;
 652   int i;
 653
 654   ME_ClearTempStyle(editor);
 655   ME_EmptyUndoStack(editor);
 656   while(p) {
 657     pNext = p->next;
 658     ME_DestroyDisplayItem(p);
 659     p = pNext;
 660   }
 661   ME_ReleaseStyle(editor->pBuffer->pDefaultStyle);
 662   for (i=0; i<HFONT_CACHE_SIZE; i++)
 663   {
 664     if (editor->pFontCache[i].hFont)
 665       DeleteObject(editor->pFontCache[i].hFont);
 666   }
 667
 668   FREE_OBJ(editor);
 669 }
 670
 671 #define UNSUPPORTED_MSG(e) \
 672   case e: \
 673     FIXME(#e ": stub\n"); \
 674     return DefWindowProcW(hWnd, msg, wParam, lParam);
 675
 676 /******************************************************************
 677  *        RichEditANSIWndProc (RICHED20.10)
 678  */
 679 LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
 680   HDC hDC;
 681   PAINTSTRUCT ps;
 682   SCROLLINFO si;
 683   ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
 684   TRACE("msg %d %08x %08lx\n", msg, wParam, lParam);
 685   switch(msg) {
 686
 687   UNSUPPORTED_MSG(EM_AUTOURLDETECT)
 688   UNSUPPORTED_MSG(EM_CHARFROMPOS)
 689   UNSUPPORTED_MSG(EM_DISPLAYBAND)
 690   UNSUPPORTED_MSG(EM_EXLIMITTEXT)
 691   UNSUPPORTED_MSG(EM_EXLINEFROMCHAR)
 692   UNSUPPORTED_MSG(EM_FINDTEXT)
 693   UNSUPPORTED_MSG(EM_FINDTEXTEX)
 694   UNSUPPORTED_MSG(EM_FINDWORDBREAK)
 695   UNSUPPORTED_MSG(EM_FMTLINES)
 696   UNSUPPORTED_MSG(EM_FORMATRANGE)
 697   UNSUPPORTED_MSG(EM_GETFIRSTVISIBLELINE)
 698   UNSUPPORTED_MSG(EM_GETIMECOMPMODE)
 699   /* UNSUPPORTED_MSG(EM_GETIMESTATUS) missing in Wine headers */
 700   UNSUPPORTED_MSG(EM_GETLANGOPTIONS)
 701   UNSUPPORTED_MSG(EM_GETLIMITTEXT)
 702   UNSUPPORTED_MSG(EM_GETLINE)
 703   UNSUPPORTED_MSG(EM_GETLINECOUNT)
 704   /* UNSUPPORTED_MSG(EM_GETOLEINTERFACE) separate stub */
 705   UNSUPPORTED_MSG(EM_GETOPTIONS)
 706   UNSUPPORTED_MSG(EM_GETRECT)
 707   UNSUPPORTED_MSG(EM_GETREDONAME)
 708   UNSUPPORTED_MSG(EM_GETTEXTMODE)
 709   UNSUPPORTED_MSG(EM_GETUNDONAME)
 710   UNSUPPORTED_MSG(EM_GETWORDBREAKPROC)
 711   UNSUPPORTED_MSG(EM_GETWORDBREAKPROCEX)
 712   UNSUPPORTED_MSG(EM_HIDESELECTION)
 713   UNSUPPORTED_MSG(EM_LIMITTEXT) /* also known as EM_SETLIMITTEXT */
 714   UNSUPPORTED_MSG(EM_LINEFROMCHAR)
 715   UNSUPPORTED_MSG(EM_LINEINDEX)
 716   UNSUPPORTED_MSG(EM_LINELENGTH)
 717   UNSUPPORTED_MSG(EM_LINESCROLL)
 718   UNSUPPORTED_MSG(EM_PASTESPECIAL)
 719 /*  UNSUPPORTED_MSG(EM_POSFROMCHARS) missing in Wine headers */
 720   UNSUPPORTED_MSG(EM_REQUESTRESIZE)
 721   UNSUPPORTED_MSG(EM_SCROLL)
 722   UNSUPPORTED_MSG(EM_SCROLLCARET)
 723   UNSUPPORTED_MSG(EM_SELECTIONTYPE)
 724   UNSUPPORTED_MSG(EM_SETLANGOPTIONS)
 725   UNSUPPORTED_MSG(EM_SETOLECALLBACK)
 726   UNSUPPORTED_MSG(EM_SETOPTIONS)
 727   UNSUPPORTED_MSG(EM_SETRECT)
 728   UNSUPPORTED_MSG(EM_SETRECTNP)
 729   UNSUPPORTED_MSG(EM_SETTARGETDEVICE)
 730   UNSUPPORTED_MSG(EM_SETTEXTMODE)
 731   UNSUPPORTED_MSG(EM_SETUNDOLIMIT)
 732   UNSUPPORTED_MSG(EM_SETWORDBREAKPROC)
 733   UNSUPPORTED_MSG(EM_SETWORDBREAKPROCEX)
 734   UNSUPPORTED_MSG(WM_SETFONT)
 735   UNSUPPORTED_MSG(WM_STYLECHANGING)
 736   UNSUPPORTED_MSG(WM_STYLECHANGED)
 737 /*  UNSUPPORTED_MSG(WM_UNICHAR) FIXME missing in Wine headers */
 738
 739 /* Messages specific to Richedit controls */
 740
 741   case EM_STREAMIN:
 742    return ME_StreamIn(editor, wParam, (EDITSTREAM*)lParam);
 743   case EM_STREAMOUT:
 744    return ME_StreamOut(editor, wParam, (EDITSTREAM *)lParam);
 745   case WM_GETDLGCODE:
 746   {
 747     UINT code = DLGC_WANTCHARS|DLGC_WANTARROWS;
 748     if (GetWindowLongW(hWnd, GWL_STYLE)&ES_WANTRETURN)
 749       code |= 0; /* FIXME what can we do here ? ask for messages and censor them ? */
 750     return code;
 751   }
 752   case WM_NCCREATE:
 753   {
 754     CREATESTRUCTW *pcs = (CREATESTRUCTW *)lParam;
 755     editor = ME_MakeEditor(hWnd);
 756     SetWindowLongW(hWnd, 0, (long)editor);
 757     pcs = 0; /* ignore */
 758     return TRUE;
 759   }
 760   case EM_EMPTYUNDOBUFFER:
 761     ME_EmptyUndoStack(editor);
 762     return 0;
 763   case EM_GETSEL:
 764   {
 765     ME_GetSelection(editor, (int *)wParam, (int *)lParam);
 766     if (!((wParam|lParam) & 0xFFFF0000))
 767       return (lParam<<16)|wParam;
 768     return -1;
 769   }
 770   case EM_EXGETSEL:
 771   {
 772     CHARRANGE *pRange = (CHARRANGE *)lParam;
 773     ME_GetSelection(editor, (int *)&pRange->cpMin, (int *)&pRange->cpMax);
 774     return 0;
 775   }
 776   case EM_CANUNDO:
 777     return editor->pUndoStack != NULL;
 778   case EM_CANREDO:
 779     return editor->pRedoStack != NULL;
 780   case EM_UNDO:
 781     ME_Undo(editor);
 782     return 0;
 783   case EM_REDO:
 784     ME_Redo(editor);
 785     return 0;
 786   case EM_SETSEL:
 787   {
 788     ME_SetSelection(editor, wParam, lParam);
 789     ME_Repaint(editor);
 790     ME_SendSelChange(editor);
 791     return 0;
 792   }
 793   case EM_EXSETSEL:
 794   {
 795     CHARRANGE *pRange = (CHARRANGE *)lParam;
 796     ME_SetSelection(editor, pRange->cpMin, pRange->cpMax);
 797     /* FIXME optimize */
 798     ME_Repaint(editor);
 799     ME_SendSelChange(editor);
 800     return 0;
 801   }
 802   case EM_SETBKGNDCOLOR:
 803   {
 804     LRESULT lColor = ME_GetBackColor(editor);
 805     if (wParam)
 806       editor->rgbBackColor = -1;
 807     else
 808       editor->rgbBackColor = lParam;
 809     InvalidateRect(hWnd, NULL, TRUE);
 810     UpdateWindow(hWnd);
 811     return lColor;
 812   }
 813   case EM_GETMODIFY:
 814     return editor->nModifyStep == 0 ? 0 : 1;
 815   case EM_SETMODIFY:
 816   {
 817     if (wParam)
 818       editor->nModifyStep = 0x80000000;
 819     else
 820       editor->nModifyStep = 0;
 821
 822     return 0;
 823   }
 824   case EM_SETREADONLY:
 825   {
 826     long nStyle = GetWindowLongW(hWnd, GWL_STYLE);
 827     if (wParam)
 828       nStyle |= ES_READONLY;
 829     else
 830       nStyle &= ~ES_READONLY;
 831     SetWindowLongW(hWnd, GWL_STYLE, nStyle);
 832     ME_Repaint(editor);
 833     return 0;
 834   }
 835   case EM_SETEVENTMASK:
 836     editor->nEventMask = lParam;
 837     return 0;
 838   case EM_GETEVENTMASK:
 839     return editor->nEventMask;
 840   case EM_SETCHARFORMAT:
 841   {
 842     CHARFORMAT2W buf, *p;
 843     BOOL bRepaint = TRUE;
 844     p = ME_ToCF2W(&buf, (CHARFORMAT2W *)lParam);
 845     if (!wParam)
 846       ME_SetDefaultCharFormat(editor, p);
 847     else if (wParam == (SCF_WORD | SCF_SELECTION))
 848       FIXME("word selection not supported\n");
 849     else if (wParam == SCF_ALL)
 850       ME_SetCharFormat(editor, 0, ME_GetTextLength(editor), p);
 851     else {
 852       int from, to;
 853       ME_GetSelection(editor, &from, &to);
 854       bRepaint = (from != to);
 855       ME_SetSelectionCharFormat(editor, p);
 856     }
 857     ME_CommitUndo(editor);
 858     if (bRepaint)
 859       ME_UpdateRepaint(editor);
 860     return 0;
 861   }
 862   case EM_GETCHARFORMAT:
 863   {
 864     CHARFORMAT2W tmp;
 865     tmp.cbSize = sizeof(tmp);
 866     if (!wParam)
 867       ME_GetDefaultCharFormat(editor, &tmp);
 868     else
 869       ME_GetSelectionCharFormat(editor, &tmp);
 870     ME_CopyToCFAny((CHARFORMAT2W *)lParam, &tmp);
 871     return 0;
 872   }
 873   case EM_SETPARAFORMAT:
 874     ME_SetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
 875     ME_UpdateRepaint(editor);
 876     ME_CommitUndo(editor);
 877     return 0;
 878   case EM_GETPARAFORMAT:
 879     ME_GetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
 880     return 0;
 881   case WM_CLEAR:
 882   {
 883     int from, to;
 884     ME_GetSelection(editor, &from, &to);
 885     ME_InternalDeleteText(editor, from, to-from);
 886     ME_CommitUndo(editor);
 887     ME_UpdateRepaint(editor);
 888     return 0;
 889   }
 890   case EM_REPLACESEL:
 891   {
 892     int from, to;
 893     ME_Style *style;
 894     LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
 895     size_t len = lstrlenW(wszText);
 896     TRACE("EM_REPLACESEL - %s\n", debugstr_w(wszText));
 897
 898     ME_GetSelection(editor, &from, &to);
 899     style = ME_GetSelectionInsertStyle(editor);
 900     ME_InternalDeleteText(editor, from, to-from);
 901     ME_InsertTextFromCursor(editor, 0, wszText, len, style);
 902     ME_ReleaseStyle(style);
 903     ME_EndToUnicode(hWnd, wszText);
 904     /* drop temporary style if line end */
 905     /* FIXME question: does abc\n mean: put abc, clear temp style, put \n? (would require a change) */
 906     if (len>0 && wszText[len-1] == '\n')
 907       ME_ClearTempStyle(editor);
 908
 909     ME_CommitUndo(editor);
 910     if (!wParam)
 911       ME_EmptyUndoStack(editor);
 912     ME_UpdateRepaint(editor);
 913     return 0;
 914   }
 915   case WM_SETTEXT:
 916   {
 917     LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
 918     TRACE("WM_SETTEXT - %s\n", (char *)(wszText)); /* debugstr_w() */
 919     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
 920     /* uses default style! */
 921     ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
 922     ME_EndToUnicode(hWnd, wszText);
 923     ME_CommitUndo(editor);
 924     ME_EmptyUndoStack(editor);
 925     ME_UpdateRepaint(editor);
 926     return 0;
 927   }
 928   case EM_CANPASTE:
 929   {
 930     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
 931     if (IsClipboardFormatAvailable(nRTFFormat))
 932       return TRUE;
 933     if (IsClipboardFormatAvailable(CF_UNICODETEXT))
 934       return TRUE;
 935     return FALSE;
 936   }
 937   case WM_PASTE:
 938   {
 939     DWORD dwFormat = 0;
 940     EDITSTREAM es;
 941     ME_GlobalDestStruct gds;
 942     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
 943     UINT cf = 0;
 944
 945     if (IsClipboardFormatAvailable(nRTFFormat))
 946       cf = nRTFFormat, dwFormat = SF_RTF;
 947     else if (IsClipboardFormatAvailable(CF_UNICODETEXT))
 948       cf = CF_UNICODETEXT, dwFormat = SF_TEXT|SF_UNICODE;
 949     else
 950       return 0;
 951
 952     if (!OpenClipboard(hWnd))
 953       return 0;
 954     gds.hData = GetClipboardData(cf);
 955     gds.nLength = 0;
 956     es.dwCookie = (DWORD)&gds;
 957     es.pfnCallback = dwFormat == SF_RTF ? ME_ReadFromHGLOBALRTF : ME_ReadFromHGLOBALUnicode;
 958     SendMessageW(hWnd, EM_STREAMIN, dwFormat|SFF_SELECTION, (LPARAM)&es);
 959
 960     CloseClipboard();
 961     return 0;
 962   }
 963   case WM_CUT:
 964   case WM_COPY:
 965   {
 966     int from, to, pars;
 967     WCHAR *data;
 968     HANDLE hData;
 969     EDITSTREAM es;
 970     ME_GlobalDestStruct gds;
 971
 972     if (!OpenClipboard(hWnd))
 973       return 0;
 974
 975     EmptyClipboard();
 976     ME_GetSelection(editor, &from, &to);
 977     pars = ME_CountParagraphsBetween(editor, from, to);
 978     hData = GlobalAlloc(GMEM_MOVEABLE, sizeof(WCHAR)*(to-from+pars+1));
 979     data = (WCHAR *)GlobalLock(hData);
 980     ME_GetTextW(editor, data, from, to-from, TRUE);
 981     GlobalUnlock(hData);
 982
 983     gds.hData = GlobalAlloc(GMEM_MOVEABLE, 0);
 984     gds.nLength = 0;
 985     es.dwCookie = (DWORD)&gds;
 986     es.pfnCallback = ME_AppendToHGLOBAL;
 987     SendMessageW(hWnd, EM_STREAMOUT, SFF_SELECTION|SF_RTF, (LPARAM)&es);
 988     GlobalReAlloc(gds.hData, gds.nLength+1, 0);
 989
 990     SetClipboardData(CF_UNICODETEXT, hData);
 991     SetClipboardData(RegisterClipboardFormatA("Rich Text Format"), gds.hData);
 992
 993     CloseClipboard();
 994     if (msg == WM_CUT)
 995     {
 996       ME_InternalDeleteText(editor, from, to-from);
 997       ME_CommitUndo(editor);
 998       ME_UpdateRepaint(editor);
 999     }
1000     return 0;
1001   }
1002   case WM_GETTEXTLENGTH:
1003     return ME_GetTextLength(editor);
1004   case WM_GETTEXT:
1005   {
1006     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1007     tr.chrg.cpMin = 0;
1008     tr.chrg.cpMax = wParam-1;
1009     tr.lpstrText = (WCHAR *)lParam;
1010     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1011   }
1012   case EM_GETSELTEXT:
1013   {
1014     int from, to;
1015     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1016     ME_GetSelection(editor, &from, &to);
1017     tr.chrg.cpMin = from;
1018     tr.chrg.cpMax = to;
1019     tr.lpstrText = (WCHAR *)lParam;
1020     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1021   }
1022   case EM_GETTEXTRANGE:
1023   {
1024     TEXTRANGEW *rng = (TEXTRANGEW *)lParam;
1025     if (IsWindowUnicode(hWnd))
1026       return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, FALSE);
1027     else
1028     {
1029       int nLen = rng->chrg.cpMax-rng->chrg.cpMin;
1030       WCHAR *p = ALLOC_N_OBJ(WCHAR, nLen+1);
1031       int nChars = ME_GetTextW(editor, p, rng->chrg.cpMin, nLen, FALSE);
1032       /* FIXME this is a potential security hole (buffer overrun)
1033          if you know more about wchar->mbyte conversion please explain
1034       */
1035       WideCharToMultiByte(CP_ACP, 0, p, nChars+1, (char *)rng->lpstrText, nLen+1, NULL, NULL);
1036       FREE_OBJ(p);
1037       return nChars;
1038     }
1039     return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, FALSE);
1040   }
1041   case WM_CREATE:
1042     ME_CommitUndo(editor);
1043     ME_WrapMarkedParagraphs(editor);
1044     ME_MoveCaret(editor);
1045     return 0;
1046   case WM_DESTROY:
1047     ME_DestroyEditor(editor);
1048     SetWindowLongW(hWnd, 0, 0);
1049     return 0;
1050   case WM_LBUTTONDOWN:
1051     SetFocus(hWnd);
1052     ME_LButtonDown(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1053     SetCapture(hWnd);
1054     break;
1055   case WM_MOUSEMOVE:
1056     if (GetCapture() == hWnd)
1057       ME_MouseMove(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1058     break;
1059   case WM_LBUTTONUP:
1060     if (GetCapture() == hWnd)
1061       ReleaseCapture();
1062     break;
1063   case WM_PAINT:
1064     hDC = BeginPaint(hWnd, &ps);
1065     ME_PaintContent(editor, hDC, FALSE, &ps.rcPaint);
1066     EndPaint(hWnd, &ps);
1067     break;
1068   case WM_SETFOCUS:
1069     ME_ShowCaret(editor);
1070     ME_SendOldNotify(editor, EN_SETFOCUS);
1071     return 0;
1072   case WM_KILLFOCUS:
1073     ME_HideCaret(editor);
1074     ME_SendOldNotify(editor, EN_KILLFOCUS);
1075     return 0;
1076   case WM_ERASEBKGND:
1077   {
1078     HDC hDC = (HDC)wParam;
1079     RECT rc;
1080     COLORREF rgbBG = ME_GetBackColor(editor);
1081     if (GetUpdateRect(hWnd,&rc,TRUE))
1082     {
1083       HBRUSH hbr = CreateSolidBrush(rgbBG);
1084       FillRect(hDC, &rc, hbr);
1085       DeleteObject(hbr);
1086     }
1087     return 1;
1088   }
1089   case WM_COMMAND:
1090     TRACE("editor wnd command = %d\n", LOWORD(wParam));
1091     return 0;
1092   case WM_KEYDOWN:
1093     if (ME_ArrowKey(editor, LOWORD(wParam), GetKeyState(VK_CONTROL)<0)) {
1094       ME_CommitUndo(editor);
1095       ME_EnsureVisible(editor, editor->pCursors[0].pRun);
1096       HideCaret(hWnd);
1097       ME_MoveCaret(editor);
1098       ShowCaret(hWnd);
1099       return 0;
1100     }
1101     if (GetKeyState(VK_CONTROL)<0)
1102     {
1103       if (LOWORD(wParam)=='W')
1104       {
1105         CHARFORMAT2W chf;
1106         char buf[2048];
1107         ME_GetSelectionCharFormat(editor, &chf);
1108         ME_DumpStyleToBuf(&chf, buf);
1109         MessageBoxA(NULL, buf, "Style dump", MB_OK);
1110       }
1111       if (LOWORD(wParam)=='Q')
1112       {
1113         ME_CheckCharOffsets(editor);
1114       }
1115     }
1116     goto do_default;
1117   case WM_CHAR:
1118   {
1119     WCHAR wstr;
1120     if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY) {
1121       MessageBeep(MB_ICONERROR);
1122       return 0; /* FIXME really 0 ? */
1123     }
1124     wstr = LOWORD(wParam);
1125     if (((unsigned)wstr)>=' ' || wstr=='\r') {
1126       /* FIXME maybe it would make sense to call EM_REPLACESEL instead ? */
1127       ME_Style *style = ME_GetInsertStyle(editor, 0);
1128       ME_SaveTempStyle(editor);
1129       ME_InsertTextFromCursor(editor, 0, &wstr, 1, style);
1130       ME_ReleaseStyle(style);
1131       ME_CommitUndo(editor);
1132       ME_UpdateRepaint(editor);
1133     }
1134     return 0;
1135   }
1136   case WM_VSCROLL:
1137   {
1138     int nPos = editor->nScrollPosY;
1139     si.cbSize = sizeof(SCROLLINFO);
1140     si.fMask = SIF_PAGE|SIF_POS|SIF_RANGE|SIF_TRACKPOS;
1141     GetScrollInfo(hWnd, SB_VERT, &si);
1142     switch(LOWORD(wParam)) {
1143     case SB_LINEUP:
1144       nPos -= 24; /* FIXME follow the original */
1145       if (nPos<0) nPos = 0;
1146       break;
1147     case SB_LINEDOWN:
1148     {
1149       int nEnd = editor->nTotalLength - editor->sizeWindow.cy;
1150       nPos += 24; /* FIXME follow the original */
1151       if (nPos>=nEnd) nPos = nEnd;
1152       break;
1153     }
1154     case SB_PAGEUP:
1155       nPos -= editor->sizeWindow.cy;
1156       if (nPos<0) nPos = 0;
1157       break;
1158     case SB_PAGEDOWN:
1159       nPos += editor->sizeWindow.cy;
1160       if (nPos>=editor->nTotalLength) nPos = editor->nTotalLength-1;
1161       break;
1162     case SB_THUMBTRACK:
1163     case SB_THUMBPOSITION:
1164       nPos = si.nTrackPos;
1165       break;
1166     }
1167     if (nPos != editor->nScrollPosY) {
1168       ScrollWindow(hWnd, 0, editor->nScrollPosY-nPos, NULL, NULL);
1169       editor->nScrollPosY = nPos;
1170       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1171       UpdateWindow(hWnd);
1172     }
1173     break;
1174   }
1175   case WM_SIZE:
1176   {
1177     ME_MarkAllForWrapping(editor);
1178     ME_WrapMarkedParagraphs(editor);
1179     ME_UpdateScrollBar(editor);
1180     ME_Repaint(editor);
1181     return DefWindowProcW(hWnd, msg, wParam, lParam);
1182   }
1183   case EM_GETOLEINTERFACE:
1184   {
1185     LPVOID *ppvObj = (LPVOID*) lParam;
1186     FIXME("EM_GETOLEINTERFACE %p: stub\n", ppvObj);
1187     return CreateIRichEditOle(ppvObj);
1188   }
1189   default:
1190   do_default:
1191     return DefWindowProcW(hWnd, msg, wParam, lParam);
1192   }
1193   return 0L;
1194 }
1195
1196 /******************************************************************
1197  *        RichEdit10ANSIWndProc (RICHED20.9)
1198  */
1199 LRESULT WINAPI RichEdit10ANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1200 {
1201   /* FIXME: this is NOT the same as 2.0 version */
1202   return RichEditANSIWndProc(hWnd, msg, wParam, lParam);
1203 }
1204
1205 void ME_SendOldNotify(ME_TextEditor *editor, int nCode)
1206 {
1207   HWND hWnd = editor->hWnd;
1208   SendMessageA(GetParent(hWnd), WM_COMMAND, (nCode<<16)|GetWindowLongW(hWnd, GWLP_ID), (LPARAM)hWnd);
1209 }
1210
1211 int ME_CountParagraphsBetween(ME_TextEditor *editor, int from, int to)
1212 {
1213   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
1214   int i = 0;
1215
1216   while(item && item->member.para.next_para->member.para.nCharOfs <= from)
1217     item = item->member.para.next_para;
1218   if (!item)
1219     return 0;
1220   while(item && item->member.para.next_para->member.para.nCharOfs <= to) {
1221     item = item->member.para.next_para;
1222     i++;
1223   }
1224   return i;
1225 }
1226
1227
1228 int ME_GetTextW(ME_TextEditor *editor, WCHAR *buffer, int nStart, int nChars, int bCRLF)
1229 {
1230   ME_DisplayItem *item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
1231   int nWritten = 0;
1232
1233   if (!item) {
1234     *buffer = L'\0';
1235     return 0;
1236   }
1237   assert(item);
1238
1239   if (nStart)
1240   {
1241     int nLen = ME_StrLen(item->member.run.strText) - nStart;
1242     if (nLen > nChars)
1243       nLen = nChars;
1244     CopyMemory(buffer, item->member.run.strText->szData + nStart, sizeof(WCHAR)*nLen);
1245     nChars -= nLen;
1246     nWritten += nLen;
1247     if (!nChars)
1248       return nWritten;
1249     buffer += nLen;
1250     nStart = 0;
1251     item = ME_FindItemFwd(item, diRun);
1252   }
1253
1254   while(nChars && item)
1255   {
1256     int nLen = ME_StrLen(item->member.run.strText);
1257     if (nLen > nChars)
1258       nLen = nChars;
1259
1260     if (item->member.run.nFlags & MERF_ENDPARA)
1261     {
1262       if (bCRLF) {
1263         *buffer++ = '\r';
1264         nWritten++;
1265       }
1266       *buffer = '\n';
1267       assert(nLen == 1);
1268     }
1269     else
1270       CopyMemory(buffer, item->member.run.strText->szData, sizeof(WCHAR)*nLen);
1271     nChars -= nLen;
1272     nWritten += nLen;
1273     buffer += nLen;
1274
1275     if (!nChars)
1276     {
1277       *buffer = L'\0';
1278       return nWritten;
1279     }
1280     item = ME_FindItemFwd(item, diRun);
1281   }
1282   *buffer = L'\0';
1283   return nWritten;
1284 }
1285
1286 static WCHAR wszClassName[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '2', '0', 'W', 0};
1287 static WCHAR wszClassName50[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '5', '0', 'W', 0};
1288
1289 void ME_RegisterEditorClass(HINSTANCE hInstance)
1290 {
1291   BOOL bResult;
1292   WNDCLASSW wcW;
1293   WNDCLASSA wcA;
1294
1295   wcW.style = CS_HREDRAW | CS_VREDRAW;
1296   wcW.lpfnWndProc = RichEditANSIWndProc;
1297   wcW.cbClsExtra = 0;
1298   wcW.cbWndExtra = 4;
1299   wcW.hInstance = NULL; /* hInstance would register DLL-local class */
1300   wcW.hIcon = NULL;
1301   wcW.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
1302   wcW.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
1303   wcW.lpszMenuName = NULL;
1304   wcW.lpszClassName = wszClassName;
1305   bResult = RegisterClassW(&wcW);
1306   assert(bResult);
1307   wcW.lpszClassName = wszClassName50;
1308   bResult = RegisterClassW(&wcW);
1309   assert(bResult);
1310
1311   wcA.style = CS_HREDRAW | CS_VREDRAW;
1312   wcA.lpfnWndProc = RichEditANSIWndProc;
1313   wcA.cbClsExtra = 0;
1314   wcA.cbWndExtra = 4;
1315   wcA.hInstance = NULL; /* hInstance would register DLL-local class */
1316   wcA.hIcon = NULL;
1317   wcA.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
1318   wcA.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
1319   wcA.lpszMenuName = NULL;
1320   wcA.lpszClassName = "RichEdit20A";
1321   bResult = RegisterClassA(&wcA);
1322   assert(bResult);
1323   wcA.lpszClassName = "RichEdit50A";
1324   bResult = RegisterClassA(&wcA);
1325   assert(bResult);
1326 }
1327
1328 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
1329 {
1330     TRACE("\n");
1331     switch (fdwReason)
1332     {
1333     case DLL_PROCESS_ATTACH:
1334       DisableThreadLibraryCalls(hinstDLL);
1335       me_heap = HeapCreate (0, 0x10000, 0);
1336       ME_RegisterEditorClass(hinstDLL);
1337       break;
1338
1339     case DLL_PROCESS_DETACH:
1340       UnregisterClassW(wszClassName, 0);
1341       UnregisterClassW(wszClassName50, 0);
1342       UnregisterClassA("RichEdit20A", 0);
1343       UnregisterClassA("RichEdit50A", 0);
1344       HeapDestroy (me_heap);
1345       me_heap = NULL;
1346       break;
1347     }
1348     return TRUE;
1349 }
1350
1351 /******************************************************************
1352  *        CreateTextServices (RICHED20.4)
1353  *
1354  * FIXME should be ITextHost instead of void*
1355  */
1356 HRESULT WINAPI CreateTextServices(IUnknown *punkOuter, void *pITextHost,
1357     IUnknown **ppUnk)
1358 {
1359   FIXME("stub\n");
1360   /* FIXME should support aggregation */
1361   if (punkOuter)
1362     return CLASS_E_NOAGGREGATION;
1363
1364   return E_FAIL; /* E_NOTIMPL isn't allowed by MSDN */
1365 }
1366
1367 /******************************************************************
1368  *        REExtendedRegisterClass (RICHED20.8)
1369  *
1370  * FIXME undocumented
1371  */
1372 void WINAPI REExtendedRegisterClass(void)
1373 {
1374   FIXME("stub\n");
1375 }