dlls/riched20/editor.c

   1 /*
   2  * RichEdit - functions dealing with editor object
   3  *
   4  * Copyright 2004 by Krzysztof Foltman
   5  * Copyright 2005 by Cihan Altinay
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 /*
  23   API implementation status:
  24
  25   Messages (ANSI versions not done yet)
  26   - EM_AUTOURLDETECT 2.0
  27   + EM_CANPASTE
  28   + EM_CANREDO 2.0
  29   + EM_CANUNDO
  30   + EM_CHARFROMPOS
  31   - EM_DISPLAYBAND
  32   + EM_EMPTYUNDOBUFFER
  33   + EM_EXGETSEL
  34   - EM_EXLIMITTEXT
  35   + EM_EXLINEFROMCHAR
  36   + EM_EXSETSEL
  37   + EM_FINDTEXT (only FR_DOWN flag implemented)
  38   + EM_FINDTEXTEX (only FR_DOWN flag implemented)
  39   - EM_FINDWORDBREAK
  40   - EM_FMTLINES
  41   - EM_FORMATRANGE
  42   - EM_GETAUTOURLDETECT 2.0
  43   - EM_GETBIDIOPTIONS 3.0
  44   - EM_GETCHARFORMAT (partly done)
  45   - EM_GETEDITSTYLE
  46   + EM_GETEVENTMASK
  47   + EM_GETFIRSTVISIBLELINE (can be optimized if needed)
  48   - EM_GETIMECOLOR 1.0asian
  49   - EM_GETIMECOMPMODE 2.0
  50   - EM_GETIMEOPTIONS 1.0asian
  51   - EM_GETIMESTATUS
  52   - EM_GETLANGOPTIONS 2.0
  53   - EM_GETLIMITTEXT
  54   - EM_GETLINE
  55   + EM_GETLINECOUNT   returns number of rows, not of paragraphs
  56   + EM_GETMODIFY
  57   - EM_GETOLEINTERFACE
  58   - EM_GETOPTIONS
  59   + EM_GETPARAFORMAT
  60   - EM_GETPASSWORDCHAR 2.0
  61   - EM_GETPUNCTUATION 1.0asian
  62   + EM_GETRECT
  63   - EM_GETREDONAME 2.0
  64   + EM_GETSEL
  65   + EM_GETSELTEXT (ANSI&Unicode)
  66   - EM_GETSCROLLPOS 3.0
  67 ! - EM_GETTHUMB
  68   - EM_GETTEXTEX 2.0
  69   + EM_GETTEXTLENGTHEX (GTL_PRECISE unimplemented)
  70   - EM_GETTEXTMODE 2.0
  71 ? + EM_GETTEXTRANGE (ANSI&Unicode)
  72   - EM_GETTYPOGRAPHYOPTIONS 3.0
  73   - EM_GETUNDONAME
  74   - EM_GETWORDBREAKPROC
  75   - EM_GETWORDBREAKPROCEX
  76   - EM_GETWORDWRAPMODE 1.0asian
  77   + EM_GETZOOM 3.0
  78   - EM_HIDESELECTION
  79   - EM_LIMITTEXT
  80   + EM_LINEFROMCHAR
  81   + EM_LINEINDEX
  82   + EM_LINELENGTH
  83   + EM_LINESCROLL
  84   - EM_PASTESPECIAL
  85   + EM_POSFROMCHAR
  86   + EM_REDO 2.0
  87   + EM_REQUESTRESIZE
  88   + EM_REPLACESEL (proper style?) ANSI&Unicode
  89   - EM_SCROLL
  90   - EM_SCROLLCARET
  91   - EM_SELECTIONTYPE
  92   - EM_SETBIDIOPTIONS 3.0
  93   + EM_SETBKGNDCOLOR
  94   - EM_SETCHARFORMAT (partly done, no ANSI)
  95   - EM_SETEDITSTYLE
  96   + EM_SETEVENTMASK (few notifications supported)
  97   - EM_SETFONTSIZE
  98   - EM_SETIMECOLOR 1.0asian
  99   - EM_SETIMEOPTIONS 1.0asian
 100   - EM_SETLANGOPTIONS 2.0
 101   - EM_SETLIMITTEXT
 102   + EM_SETMODIFY (not sure if implementation is correct)
 103   - EM_SETOLECALLBACK
 104   - EM_SETOPTIONS
 105   - EM_SETPALETTE 2.0
 106   + EM_SETPARAFORMAT
 107   - EM_SETPASSWORDCHAR 2.0
 108   - EM_SETPUNCTUATION 1.0asian
 109   + EM_SETREADONLY no beep on modification attempt
 110   + EM_SETRECT
 111   + EM_SETRECTNP (EM_SETRECT without repainting)
 112   + EM_SETSEL
 113   - EM_SETSCROLLPOS 3.0
 114   - EM_SETTABSTOPS 3.0
 115   - EM_SETTARGETDEVICE
 116   + EM_SETTEXTEX 3.0 (unicode only, no rich text insertion handling, proper style?)
 117   - EM_SETTEXTMODE 2.0
 118   - EM_SETTYPOGRAPHYOPTIONS 3.0
 119   - EM_SETUNDOLIMIT 2.0
 120   - EM_SETWORDBREAKPROC
 121   - EM_SETWORDBREAKPROCEX
 122   - EM_SETWORDWRAPMODE 1.0asian
 123   + EM_SETZOOM 3.0
 124   - EM_SHOWSCROLLBAR 2.0
 125   - EM_STOPGROUPTYPING 2.0
 126   + EM_STREAMIN
 127   + EM_STREAMOUT
 128   + EM_UNDO
 129   + WM_CHAR
 130   + WM_CLEAR
 131   + WM_COPY
 132   + WM_CUT
 133   + WM_GETDLGCODE (the current implementation is incomplete)
 134   + WM_GETTEXT (ANSI&Unicode)
 135   + WM_GETTEXTLENGTH (ANSI version sucks)
 136   + WM_PASTE
 137   - WM_SETFONT
 138   + WM_SETTEXT (resets undo stack !) (proper style?) ANSI&Unicode
 139   - WM_STYLECHANGING
 140   - WM_STYLECHANGED (things like read-only flag)
 141   - WM_UNICHAR
 142
 143   Notifications
 144
 145   * EN_CHANGE (sent from the wrong place)
 146   - EN_CORRECTTEXT
 147   - EN_DROPFILES
 148   - EN_ERRSPACE
 149   - EN_HSCROLL
 150   - EN_IMECHANGE
 151   + EN_KILLFOCUS
 152   - EN_LINK
 153   - EN_MAXTEXT
 154   - EN_MSGFILTER
 155   - EN_OLEOPFAILED
 156   - EN_PROTECTED
 157   + EN_REQUESTRESIZE
 158   - EN_SAVECLIPBOARD
 159   + EN_SELCHANGE
 160   + EN_SETFOCUS
 161   - EN_STOPNOUNDO
 162   * EN_UPDATE (sent from the wrong place)
 163   - EN_VSCROLL
 164
 165   Styles
 166
 167   - ES_AUTOHSCROLL
 168   - ES_AUTOVSCROLL
 169   - ES_CENTER
 170   - ES_DISABLENOSCROLL (scrollbar is always visible)
 171   - ES_EX_NOCALLOLEINIT
 172   - ES_LEFT
 173   - ES_MULTILINE (currently single line controls aren't supported)
 174   - ES_NOIME
 175   - ES_READONLY (I'm not sure if beeping is the proper behaviour)
 176   - ES_RIGHT
 177   - ES_SAVESEL
 178   - ES_SELFIME
 179   - ES_SUNKEN
 180   - ES_VERTICAL
 181   - ES_WANTRETURN (don't know how to do WM_GETDLGCODE part)
 182   - WS_SETFONT
 183   - WS_HSCROLL
 184   - WS_VSCROLL
 185 */
 186
 187 /*
 188  * RICHED20 TODO (incomplete):
 189  *
 190  * - messages/styles/notifications listed above
 191  * - Undo coalescing
 192  * - add remaining CHARFORMAT/PARAFORMAT fields
 193  * - right/center align should strip spaces from the beginning
 194  * - more advanced navigation (Ctrl-arrows)
 195  * - tabs
 196  * - pictures/OLE objects (not just smiling faces that lack API support ;-) )
 197  * - COM interface (looks like a major pain in the TODO list)
 198  * - calculate heights of pictures (half-done)
 199  * - horizontal scrolling (not even started)
 200  * - hysteresis during wrapping (related to scrollbars appearing/disappearing)
 201  * - find/replace
 202  * - how to implement EM_FORMATRANGE and EM_DISPLAYBAND ? (Mission Impossible)
 203  * - italic caret with italic fonts
 204  * - IME
 205  * - most notifications aren't sent at all (the most important ones are)
 206  * - when should EN_SELCHANGE be sent after text change ? (before/after EN_UPDATE?)
 207  * - WM_SETTEXT may use wrong style (but I'm 80% sure it's OK)
 208  * - EM_GETCHARFORMAT with SCF_SELECTION may not behave 100% like in original (but very close)
 209  * - full justification
 210  * - hyphenation
 211  * - tables
 212  * - ListBox & ComboBox not implemented
 213  *
 214  * Bugs that are probably fixed, but not so easy to verify:
 215  * - EN_UPDATE/EN_CHANGE are handled very incorrectly (should be OK now)
 216  * - undo for ME_JoinParagraphs doesn't store paragraph format ? (it does)
 217  * - check/fix artificial EOL logic (bCursorAtEnd, hardly logical)
 218  * - caret shouldn't be displayed when selection isn't empty
 219  * - check refcounting in style management functions (looks perfect now, but no bugs is suspicious)
 220  * - undo for setting default format (done, might be buggy)
 221  * - styles might be not released properly (looks like they work like charm, but who knows?
 222  *
 223  */
 224
 225 #include "editor.h"
 226 #include "commdlg.h"
 227 #include "ole2.h"
 228 #include "richole.h"
 229 #include "winreg.h"
 230 #define NO_SHLWAPI_STREAM
 231 #include "shlwapi.h"
 232
 233 #include "rtf.h"
 234
 235 WINE_DEFAULT_DEBUG_CHANNEL(richedit);
 236
 237 int me_debug = 0;
 238 HANDLE me_heap = NULL;
 239
 240 static BOOL ME_ListBoxRegistered = FALSE;
 241 static BOOL ME_ComboBoxRegistered = FALSE;
 242
 243 static ME_TextBuffer *ME_MakeText(void) {
 244
 245   ME_TextBuffer *buf = ALLOC_OBJ(ME_TextBuffer);
 246
 247   ME_DisplayItem *p1 = ME_MakeDI(diTextStart);
 248   ME_DisplayItem *p2 = ME_MakeDI(diTextEnd);
 249
 250   p1->prev = NULL;
 251   p1->next = p2;
 252   p2->prev = p1;
 253   p2->next = NULL;
 254   p1->member.para.next_para = p2;
 255   p2->member.para.prev_para = p1;
 256   p2->member.para.nCharOfs = 0;
 257
 258   buf->pFirst = p1;
 259   buf->pLast = p2;
 260   buf->pCharStyle = NULL;
 261
 262   return buf;
 263 }
 264
 265
 266 static LRESULT ME_StreamInText(ME_TextEditor *editor, DWORD dwFormat, ME_InStream *stream, ME_Style *style)
 267 {
 268   WCHAR wszText[STREAMIN_BUFFER_SIZE+1];
 269   WCHAR *pText;
 270
 271   TRACE("%08lx %p\n", dwFormat, stream);
 272
 273   do {
 274     long nWideChars = 0;
 275
 276     if (!stream->dwSize)
 277     {
 278       ME_StreamInFill(stream);
 279       if (stream->editstream->dwError)
 280         break;
 281       if (!stream->dwSize)
 282         break;
 283     }
 284
 285     if (!(dwFormat & SF_UNICODE))
 286     {
 287       /* FIXME? this is doomed to fail on true MBCS like UTF-8, luckily they're unlikely to be used as CP_ACP */
 288       nWideChars = MultiByteToWideChar(CP_ACP, 0, stream->buffer, stream->dwSize, wszText, STREAMIN_BUFFER_SIZE);
 289       pText = wszText;
 290     }
 291     else
 292     {
 293       nWideChars = stream->dwSize >> 1;
 294       pText = (WCHAR *)stream->buffer;
 295     }
 296
 297     ME_InsertTextFromCursor(editor, 0, pText, nWideChars, style);
 298     if (stream->dwSize == 0)
 299       break;
 300     stream->dwSize = 0;
 301   } while(1);
 302   ME_CommitUndo(editor);
 303   ME_Repaint(editor);
 304   return 0;
 305 }
 306
 307 static void ME_RTFCharAttrHook(RTF_Info *info)
 308 {
 309   CHARFORMAT2W fmt;
 310   fmt.cbSize = sizeof(fmt);
 311   fmt.dwMask = 0;
 312
 313   switch(info->rtfMinor)
 314   {
 315     case rtfPlain:
 316       /* FIXME add more flags once they're implemented */
 317       fmt.dwMask = CFM_BOLD | CFM_ITALIC | CFM_UNDERLINE | CFM_STRIKEOUT | CFM_COLOR | CFM_BACKCOLOR | CFM_SIZE | CFM_WEIGHT;
 318       fmt.dwEffects = CFE_AUTOCOLOR | CFE_AUTOBACKCOLOR;
 319       fmt.yHeight = 12*20; /* 12pt */
 320       fmt.wWeight = 400;
 321       break;
 322     case rtfBold:
 323       fmt.dwMask = CFM_BOLD;
 324       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 325       break;
 326     case rtfItalic:
 327       fmt.dwMask = CFM_ITALIC;
 328       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 329       break;
 330     case rtfUnderline:
 331       fmt.dwMask = CFM_UNDERLINE;
 332       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 333       fmt.bUnderlineType = CFU_CF1UNDERLINE;
 334       break;
 335     case rtfNoUnderline:
 336       fmt.dwMask = CFM_UNDERLINE;
 337       fmt.dwEffects = 0;
 338       break;
 339     case rtfStrikeThru:
 340       fmt.dwMask = CFM_STRIKEOUT;
 341       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 342       break;
 343     case rtfSubScript:
 344     case rtfSuperScript:
 345     case rtfSubScrShrink:
 346     case rtfSuperScrShrink:
 347     case rtfNoSuperSub:
 348       fmt.dwMask = CFM_SUBSCRIPT|CFM_SUPERSCRIPT;
 349       if (info->rtfMinor == rtfSubScrShrink) fmt.dwEffects = CFE_SUBSCRIPT;
 350       if (info->rtfMinor == rtfSuperScrShrink) fmt.dwEffects = CFE_SUPERSCRIPT;
 351       if (info->rtfMinor == rtfNoSuperSub) fmt.dwEffects = 0;
 352       break;
 353     case rtfBackColor:
 354       fmt.dwMask = CFM_BACKCOLOR;
 355       fmt.dwEffects = 0;
 356       if (info->rtfParam == 0)
 357         fmt.dwEffects = CFE_AUTOBACKCOLOR;
 358       else if (info->rtfParam != rtfNoParam)
 359       {
 360         RTFColor *c = RTFGetColor(info, info->rtfParam);
 361         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 362       }
 363       break;
 364     case rtfForeColor:
 365       fmt.dwMask = CFM_COLOR;
 366       fmt.dwEffects = 0;
 367       if (info->rtfParam == 0)
 368         fmt.dwEffects = CFE_AUTOCOLOR;
 369       else if (info->rtfParam != rtfNoParam)
 370       {
 371         RTFColor *c = RTFGetColor(info, info->rtfParam);
 372         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 373       }
 374       break;
 375     case rtfFontNum:
 376       if (info->rtfParam != rtfNoParam)
 377       {
 378         RTFFont *f = RTFGetFont(info, info->rtfParam);
 379         if (f)
 380         {
 381           MultiByteToWideChar(CP_ACP, 0, f->rtfFName, -1, fmt.szFaceName, sizeof(fmt.szFaceName)/sizeof(WCHAR));
 382           fmt.szFaceName[sizeof(fmt.szFaceName)/sizeof(WCHAR)-1] = '\0';
 383           fmt.bCharSet = f->rtfFCharSet;
 384           fmt.dwMask = CFM_FACE | CFM_CHARSET;
 385         }
 386       }
 387       break;
 388     case rtfFontSize:
 389       fmt.dwMask = CFM_SIZE;
 390       if (info->rtfParam != rtfNoParam)
 391         fmt.yHeight = info->rtfParam*10;
 392       break;
 393   }
 394   if (fmt.dwMask) {
 395     ME_Style *style2;
 396     RTFFlushOutputBuffer(info);
 397     /* FIXME too slow ? how come ? */
 398     style2 = ME_ApplyStyle(info->style, &fmt);
 399     ME_ReleaseStyle(info->style);
 400     info->style = style2;
 401     info->styleChanged = TRUE;
 402   }
 403 }
 404
 405 /* FIXME this function doesn't get any information about context of the RTF tag, which is very bad,
 406    the same tags mean different things in different contexts */
 407 static void ME_RTFParAttrHook(RTF_Info *info)
 408 {
 409   PARAFORMAT2 fmt;
 410   fmt.cbSize = sizeof(fmt);
 411   fmt.dwMask = 0;
 412
 413   switch(info->rtfMinor)
 414   {
 415   case rtfParDef: /* I'm not 100% sure what does it do, but I guess it restores default paragraph attributes */
 416     fmt.dwMask = PFM_ALIGNMENT | PFM_TABSTOPS | PFM_OFFSET | PFM_STARTINDENT;
 417     fmt.wAlignment = PFA_LEFT;
 418     fmt.cTabCount = 0;
 419     fmt.dxOffset = fmt.dxStartIndent = 0;
 420     break;
 421   case rtfFirstIndent:
 422     ME_GetSelectionParaFormat(info->editor, &fmt);
 423     fmt.dwMask = PFM_STARTINDENT;
 424     fmt.dxStartIndent = info->rtfParam + fmt.dxOffset;
 425     break;
 426   case rtfLeftIndent:
 427   {
 428     int first, left;
 429     ME_GetSelectionParaFormat(info->editor, &fmt);
 430     first = fmt.dxStartIndent;
 431     left = info->rtfParam;
 432     fmt.dwMask = PFM_STARTINDENT|PFM_OFFSET;
 433     fmt.dxStartIndent = first + left;
 434     fmt.dxOffset = -first;
 435     break;
 436   }
 437   case rtfRightIndent:
 438     fmt.dwMask = PFM_RIGHTINDENT;
 439     fmt.dxRightIndent = info->rtfParam;
 440     break;
 441   case rtfQuadLeft:
 442   case rtfQuadJust:
 443     fmt.dwMask = PFM_ALIGNMENT;
 444     fmt.wAlignment = PFA_LEFT;
 445     break;
 446   case rtfQuadRight:
 447     fmt.dwMask = PFM_ALIGNMENT;
 448     fmt.wAlignment = PFA_RIGHT;
 449     break;
 450   case rtfQuadCenter:
 451     fmt.dwMask = PFM_ALIGNMENT;
 452     fmt.wAlignment = PFA_CENTER;
 453     break;
 454   case rtfTabPos:
 455     ME_GetSelectionParaFormat(info->editor, &fmt);
 456     if (!(fmt.dwMask & PFM_TABSTOPS))
 457     {
 458       fmt.dwMask |= PFM_TABSTOPS;
 459       fmt.cTabCount = 0;
 460     }
 461     if (fmt.cTabCount < MAX_TAB_STOPS)
 462       fmt.rgxTabs[fmt.cTabCount++] = info->rtfParam;
 463     break;
 464   }
 465   if (fmt.dwMask) {
 466     RTFFlushOutputBuffer(info);
 467     /* FIXME too slow ? how come ?*/
 468     ME_SetSelectionParaFormat(info->editor, &fmt);
 469   }
 470 }
 471
 472 static void ME_RTFReadHook(RTF_Info *info) {
 473   switch(info->rtfClass)
 474   {
 475     case rtfGroup:
 476       switch(info->rtfMajor)
 477       {
 478         case rtfBeginGroup:
 479           if (info->stackTop < maxStack) {
 480             memcpy(&info->stack[info->stackTop].fmt, &info->style->fmt, sizeof(CHARFORMAT2W));
 481             info->stack[info->stackTop].codePage = info->codePage;
 482             info->stack[info->stackTop].unicodeLength = info->unicodeLength;
 483           }
 484           info->stackTop++;
 485           info->styleChanged = FALSE;
 486           break;
 487         case rtfEndGroup:
 488         {
 489           ME_Style *s;
 490           RTFFlushOutputBuffer(info);
 491           if (info->stackTop<=1) {
 492             info->rtfClass = rtfEOF;
 493             return;
 494           }
 495           info->stackTop--;
 496           assert(info->stackTop >= 0);
 497           if (info->styleChanged)
 498           {
 499             /* FIXME too slow ? how come ? */
 500             s = ME_ApplyStyle(info->style, &info->stack[info->stackTop].fmt);
 501             ME_ReleaseStyle(info->style);
 502             info->style = s;
 503             info->codePage = info->stack[info->stackTop].codePage;
 504             info->unicodeLength = info->stack[info->stackTop].unicodeLength;
 505           }
 506           break;
 507         }
 508       }
 509       break;
 510     case rtfControl:
 511       switch(info->rtfMajor)
 512       {
 513         case rtfCharAttr:
 514           ME_RTFCharAttrHook(info);
 515           break;
 516         case rtfParAttr:
 517           ME_RTFParAttrHook(info);
 518           break;
 519       }
 520       break;
 521   }
 522 }
 523
 524 void
 525 ME_StreamInFill(ME_InStream *stream)
 526 {
 527   stream->editstream->dwError = stream->editstream->pfnCallback(stream->editstream->dwCookie,
 528                                                                 (BYTE *)stream->buffer,
 529                                                                 sizeof(stream->buffer),
 530                                                                 (LONG *)&stream->dwSize);
 531   stream->dwUsed = 0;
 532 }
 533
 534 static LRESULT ME_StreamIn(ME_TextEditor *editor, DWORD format, EDITSTREAM *stream)
 535 {
 536   RTF_Info parser;
 537   ME_Style *style;
 538   int from, to, to2, nUndoMode;
 539   ME_UndoItem *pUI;
 540   int nEventMask = editor->nEventMask;
 541   ME_InStream inStream;
 542
 543   TRACE("stream==%p hWnd==%p format==0x%X\n", stream, editor->hWnd, (UINT)format);
 544   editor->nEventMask = 0;
 545
 546   ME_GetSelection(editor, &from, &to);
 547   if (format & SFF_SELECTION) {
 548     style = ME_GetSelectionInsertStyle(editor);
 549
 550     ME_InternalDeleteText(editor, from, to-from);
 551   }
 552   else {
 553     style = editor->pBuffer->pDefaultStyle;
 554     ME_AddRefStyle(style);
 555     SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 556     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
 557     from = to = 0;
 558     ME_ClearTempStyle(editor);
 559     /* FIXME restore default paragraph formatting ! */
 560   }
 561
 562   nUndoMode = editor->nUndoMode;
 563   editor->nUndoMode = umIgnore;
 564
 565   inStream.editstream = stream;
 566   inStream.editstream->dwError = 0;
 567   inStream.dwSize = 0;
 568   inStream.dwUsed = 0;
 569
 570   if (format & SF_RTF)
 571   {
 572     /* Check if it's really RTF, and if it is not, use plain text */
 573     ME_StreamInFill(&inStream);
 574     if (!inStream.editstream->dwError)
 575     {
 576       if (strncmp(inStream.buffer, "{\\rtf1", 6) && strncmp(inStream.buffer, "{\\urtf", 6))
 577       {
 578         format &= ~SF_RTF;
 579         format |= SF_TEXT;
 580       }
 581     }
 582   }
 583
 584   if (!inStream.editstream->dwError)
 585   {
 586     if (format & SF_RTF) {
 587       /* setup the RTF parser */
 588       memset(&parser, 0, sizeof parser);
 589       RTFSetEditStream(&parser, &inStream);
 590       parser.rtfFormat = format&(SF_TEXT|SF_RTF);
 591       parser.hwndEdit = editor->hWnd;
 592       parser.editor = editor;
 593       parser.style = style;
 594       WriterInit(&parser);
 595       RTFInit(&parser);
 596       RTFSetReadHook(&parser, ME_RTFReadHook);
 597       BeginFile(&parser);
 598
 599       /* do the parsing */
 600       RTFRead(&parser);
 601       RTFFlushOutputBuffer(&parser);
 602       RTFDestroy(&parser);
 603
 604       style = parser.style;
 605     }
 606     else if (format & SF_TEXT)
 607       ME_StreamInText(editor, format, &inStream, style);
 608     else
 609       ERR("EM_STREAMIN without SF_TEXT or SF_RTF\n");
 610     ME_GetSelection(editor, &to, &to2);
 611     /* put the cursor at the top */
 612     if (!(format & SFF_SELECTION))
 613       SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 614     else
 615     {
 616       /* FIXME where to put cursor now ? */
 617     }
 618   }
 619
 620   editor->nUndoMode = nUndoMode;
 621   pUI = ME_AddUndoItem(editor, diUndoDeleteRun, NULL);
 622   TRACE("from %d to %d\n", from, to);
 623   if (pUI && from < to)
 624   {
 625     pUI->nStart = from;
 626     pUI->nLen = to-from;
 627   }
 628   ME_CommitUndo(editor);
 629   ME_ReleaseStyle(style);
 630   editor->nEventMask = nEventMask;
 631   if (editor->bRedraw)
 632   {
 633     InvalidateRect(editor->hWnd, NULL, TRUE);
 634     ME_UpdateRepaint(editor);
 635   }
 636   if (!(format & SFF_SELECTION)) {
 637     ME_ClearTempStyle(editor);
 638   }
 639   ME_MoveCaret(editor);
 640   ME_SendSelChange(editor);
 641   ME_SendRequestResize(editor, FALSE);
 642
 643   return 0;
 644 }
 645
 646
 647 ME_DisplayItem *
 648 ME_FindItemAtOffset(ME_TextEditor *editor, ME_DIType nItemType, int nOffset, int *nItemOffset)
 649 {
 650   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
 651
 652   while (item && item->member.para.next_para->member.para.nCharOfs <= nOffset)
 653     item = ME_FindItemFwd(item, diParagraph);
 654
 655   if (!item)
 656     return item;
 657
 658   nOffset -= item->member.para.nCharOfs;
 659   if (nItemType == diParagraph) {
 660     if (nItemOffset)
 661       *nItemOffset = nOffset;
 662     return item;
 663   }
 664
 665   do {
 666     item = ME_FindItemFwd(item, diRun);
 667   } while (item && (item->member.run.nCharOfs + ME_StrLen(item->member.run.strText) <= nOffset));
 668   if (item) {
 669     nOffset -= item->member.run.nCharOfs;
 670     if (nItemOffset)
 671       *nItemOffset = nOffset;
 672   }
 673   return item;
 674 }
 675
 676
 677 static int
 678 ME_FindText(ME_TextEditor *editor, DWORD flags, CHARRANGE *chrg, WCHAR *text, CHARRANGE *chrgText)
 679 {
 680   int nStart, nEnd;
 681   int nLen = lstrlenW(text);
 682   int nMin, nMax;
 683   ME_DisplayItem *item;
 684   ME_DisplayItem *para;
 685
 686   TRACE("flags==0x%08lx, chrg->cpMin==%ld, chrg->cpMax==%ld text==%s\n",
 687         flags, chrg->cpMin, chrg->cpMax, debugstr_w(text));
 688
 689   if (!(flags & FR_MATCHCASE))
 690     FIXME("Case-insensitive search not implemented\n");
 691   if (flags & ~(FR_DOWN | FR_MATCHCASE))
 692     FIXME("Flags 0x%08lx not implemented\n", flags & ~(FR_DOWN | FR_MATCHCASE));
 693
 694   if (chrg->cpMax == -1)
 695   {
 696     nMin = chrg->cpMin;
 697     nMax = ME_GetTextLength(editor);
 698   }
 699   else
 700   {
 701     nMin = min(chrg->cpMin, chrg->cpMax);
 702     nMax = max(chrg->cpMin, chrg->cpMax);
 703   }
 704
 705   if (!nLen)
 706   {
 707     if (chrgText)
 708       chrgText->cpMin = chrgText->cpMax = ((flags & FR_DOWN) ? nMin : nMax);
 709     return chrgText->cpMin;
 710   }
 711
 712   if (flags & FR_DOWN) /* Forward search */
 713   {
 714     nStart = nMin;
 715     item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
 716     if (!item)
 717       return -1;
 718
 719     para = ME_GetParagraph(item);
 720     while (item
 721            && para->member.para.nCharOfs + item->member.run.nCharOfs + nStart + nLen < nMax)
 722     {
 723       ME_DisplayItem *pCurItem = item;
 724       int nCurStart = nStart;
 725       int nMatched = 0;
 726
 727       while (pCurItem && pCurItem->member.run.strText->szData[nCurStart + nMatched] == text[nMatched])
 728       {
 729         nMatched++;
 730         if (nMatched == nLen)
 731         {
 732           nStart += para->member.para.nCharOfs + item->member.run.nCharOfs;
 733           if (chrgText)
 734           {
 735             chrgText->cpMin = nStart;
 736             chrgText->cpMax = nStart + nLen;
 737           }
 738           TRACE("found at %d-%d\n", nStart, nStart + nLen);
 739           return nStart;
 740         }
 741         if (nCurStart + nMatched == ME_StrLen(pCurItem->member.run.strText))
 742         {
 743           pCurItem = ME_FindItemFwd(pCurItem, diRun);
 744           para = ME_GetParagraph(pCurItem);
 745           nCurStart = -nMatched;
 746         }
 747       }
 748       nStart++;
 749       if (nStart == ME_StrLen(item->member.run.strText))
 750       {
 751         item = ME_FindItemFwd(item, diRun);
 752         para = ME_GetParagraph(item);
 753         nStart = 0;
 754       }
 755     }
 756   }
 757   else /* Backward search */
 758   {
 759     nEnd = nMax;
 760     item = ME_FindItemAtOffset(editor, diRun, nEnd, &nEnd);
 761     if (!item)
 762       return -1;
 763
 764     para = ME_GetParagraph(item);
 765
 766     while (item
 767            && para->member.para.nCharOfs + item->member.run.nCharOfs + nEnd - nLen >= nMin)
 768     {
 769       ME_DisplayItem *pCurItem = item;
 770       int nCurEnd = nEnd;
 771       int nMatched = 0;
 772
 773       while (pCurItem && pCurItem->member.run.strText->szData[nCurEnd - nMatched - 1] == text[nLen - nMatched - 1])
 774       {
 775         nMatched++;
 776         if (nMatched == nLen)
 777         {
 778           nStart = para->member.para.nCharOfs + item->member.run.nCharOfs + nCurEnd - nMatched;
 779           if (chrgText)
 780           {
 781             chrgText->cpMin = nStart;
 782             chrgText->cpMax = nStart + nLen;
 783           }
 784           TRACE("found at %d-%d\n", nStart, nStart + nLen);
 785           return nStart;
 786         }
 787         if (nCurEnd - nMatched == 0)
 788         {
 789           pCurItem = ME_FindItemBack(pCurItem, diRun);
 790           para = ME_GetParagraph(pCurItem);
 791           nCurEnd = ME_StrLen(pCurItem->member.run.strText) + nMatched;
 792         }
 793       }
 794       nEnd--;
 795       if (nEnd < 0)
 796       {
 797         item = ME_FindItemBack(item, diRun);
 798         para = ME_GetParagraph(item);
 799         nEnd = ME_StrLen(item->member.run.strText);
 800       }
 801     }
 802   }
 803   TRACE("not found\n");
 804   return -1;
 805 }
 806
 807
 808 ME_TextEditor *ME_MakeEditor(HWND hWnd) {
 809   ME_TextEditor *ed = ALLOC_OBJ(ME_TextEditor);
 810   HDC hDC;
 811   int i;
 812   ed->hWnd = hWnd;
 813   ed->bEmulateVersion10 = FALSE;
 814   ed->pBuffer = ME_MakeText();
 815   hDC = GetDC(hWnd);
 816   ME_MakeFirstParagraph(hDC, ed->pBuffer);
 817   ReleaseDC(hWnd, hDC);
 818   ed->bCaretShown = FALSE;
 819   ed->nCursors = 3;
 820   ed->pCursors = ALLOC_N_OBJ(ME_Cursor, ed->nCursors);
 821   ed->pCursors[0].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
 822   ed->pCursors[0].nOffset = 0;
 823   ed->pCursors[1].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
 824   ed->pCursors[1].nOffset = 0;
 825   ed->nLastTotalLength = ed->nTotalLength = 0;
 826   ed->nUDArrowX = -1;
 827   ed->nSequence = 0;
 828   ed->rgbBackColor = -1;
 829   ed->hbrBackground = GetSysColorBrush(COLOR_WINDOW);
 830   ed->bCaretAtEnd = FALSE;
 831   ed->nEventMask = 0;
 832   ed->nModifyStep = 0;
 833   ed->pUndoStack = ed->pRedoStack = NULL;
 834   ed->nUndoMode = umAddToUndo;
 835   ed->nParagraphs = 1;
 836   ed->nLastSelStart = ed->nLastSelEnd = 0;
 837   ed->nScrollPosY = 0;
 838   ed->nZoomNumerator = ed->nZoomDenominator = 0;
 839   ed->bRedraw = TRUE;
 840   GetClientRect(hWnd, &ed->rcFormat);
 841   for (i=0; i<HFONT_CACHE_SIZE; i++)
 842   {
 843     ed->pFontCache[i].nRefs = 0;
 844     ed->pFontCache[i].nAge = 0;
 845     ed->pFontCache[i].hFont = NULL;
 846   }
 847   ME_CheckCharOffsets(ed);
 848   return ed;
 849 }
 850
 851 typedef struct tagME_GlobalDestStruct
 852 {
 853   HGLOBAL hData;
 854   int nLength;
 855 } ME_GlobalDestStruct;
 856
 857 static DWORD CALLBACK ME_AppendToHGLOBAL(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 858 {
 859   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 860   int nMaxSize;
 861   BYTE *pDest;
 862
 863   nMaxSize = GlobalSize(pData->hData);
 864   if (pData->nLength+cb+1 >= cb)
 865   {
 866     /* round up to 2^17 */
 867     int nNewSize = (((nMaxSize+cb+1)|0x1FFFF)+1) & 0xFFFE0000;
 868     pData->hData = GlobalReAlloc(pData->hData, nNewSize, 0);
 869   }
 870   pDest = (BYTE *)GlobalLock(pData->hData);
 871   memcpy(pDest + pData->nLength, lpBuff, cb);
 872   pData->nLength += cb;
 873   pDest[pData->nLength] = '\0';
 874   GlobalUnlock(pData->hData);
 875   *pcb = cb;
 876
 877   return 0;
 878 }
 879
 880 static DWORD CALLBACK ME_ReadFromHGLOBALUnicode(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 881 {
 882   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 883   int i;
 884   WORD *pSrc, *pDest;
 885
 886   cb = cb >> 1;
 887   pDest = (WORD *)lpBuff;
 888   pSrc = (WORD *)GlobalLock(pData->hData);
 889   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
 890     pDest[i] = pSrc[pData->nLength+i];
 891   }
 892   pData->nLength += i;
 893   *pcb = 2*i;
 894   GlobalUnlock(pData->hData);
 895   return 0;
 896 }
 897
 898 static DWORD CALLBACK ME_ReadFromHGLOBALRTF(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 899 {
 900   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 901   int i;
 902   BYTE *pSrc, *pDest;
 903
 904   pDest = lpBuff;
 905   pSrc = (BYTE *)GlobalLock(pData->hData);
 906   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
 907     pDest[i] = pSrc[pData->nLength+i];
 908   }
 909   pData->nLength += i;
 910   *pcb = i;
 911   GlobalUnlock(pData->hData);
 912   return 0;
 913 }
 914
 915
 916 void ME_DestroyEditor(ME_TextEditor *editor)
 917 {
 918   ME_DisplayItem *pFirst = editor->pBuffer->pFirst;
 919   ME_DisplayItem *p = pFirst, *pNext = NULL;
 920   int i;
 921
 922   ME_ClearTempStyle(editor);
 923   ME_EmptyUndoStack(editor);
 924   while(p) {
 925     pNext = p->next;
 926     ME_DestroyDisplayItem(p);
 927     p = pNext;
 928   }
 929   ME_ReleaseStyle(editor->pBuffer->pDefaultStyle);
 930   for (i=0; i<HFONT_CACHE_SIZE; i++)
 931   {
 932     if (editor->pFontCache[i].hFont)
 933       DeleteObject(editor->pFontCache[i].hFont);
 934   }
 935   DeleteObject(editor->hbrBackground);
 936
 937   FREE_OBJ(editor);
 938 }
 939
 940 static WCHAR wszClassName[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '2', '0', 'W', 0};
 941 static WCHAR wszClassName50[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '5', '0', 'W', 0};
 942 static WCHAR wszClassNameListBox[] = {'R','E','L','i','s','t','B','o','x','2','0','W', 0};
 943 static WCHAR wszClassNameComboBox[] = {'R','E','C','o','m','b','o','B','o','x','2','0','W', 0};
 944
 945 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 946 {
 947     TRACE("\n");
 948     switch (fdwReason)
 949     {
 950     case DLL_PROCESS_ATTACH:
 951       DisableThreadLibraryCalls(hinstDLL);
 952       me_heap = HeapCreate (0, 0x10000, 0);
 953       ME_RegisterEditorClass(hinstDLL);
 954       break;
 955
 956     case DLL_PROCESS_DETACH:
 957       UnregisterClassW(wszClassName, 0);
 958       UnregisterClassW(wszClassName50, 0);
 959       UnregisterClassA("RichEdit20A", 0);
 960       UnregisterClassA("RichEdit50A", 0);
 961       if (ME_ListBoxRegistered)
 962           UnregisterClassW(wszClassNameListBox, 0);
 963       if (ME_ComboBoxRegistered)
 964           UnregisterClassW(wszClassNameComboBox, 0);
 965       HeapDestroy (me_heap);
 966       me_heap = NULL;
 967       break;
 968     }
 969     return TRUE;
 970 }
 971
 972
 973 #define UNSUPPORTED_MSG(e) \
 974   case e: \
 975     FIXME(#e ": stub\n"); \
 976     return DefWindowProcW(hWnd, msg, wParam, lParam);
 977
 978 static const char * const edit_messages[] = {
 979   "EM_GETSEL",
 980   "EM_SETSEL",
 981   "EM_GETRECT",
 982   "EM_SETRECT",
 983   "EM_SETRECTNP",
 984   "EM_SCROLL",
 985   "EM_LINESCROLL",
 986   "EM_SCROLLCARET",
 987   "EM_GETMODIFY",
 988   "EM_SETMODIFY",
 989   "EM_GETLINECOUNT",
 990   "EM_LINEINDEX",
 991   "EM_SETHANDLE",
 992   "EM_GETHANDLE",
 993   "EM_GETTHUMB",
 994   "EM_UNKNOWN_BF",
 995   "EM_UNKNOWN_C0",
 996   "EM_LINELENGTH",
 997   "EM_REPLACESEL",
 998   "EM_UNKNOWN_C3",
 999   "EM_GETLINE",
1000   "EM_LIMITTEXT",
1001   "EM_CANUNDO",
1002   "EM_UNDO",
1003   "EM_FMTLINES",
1004   "EM_LINEFROMCHAR",
1005   "EM_UNKNOWN_CA",
1006   "EM_SETTABSTOPS",
1007   "EM_SETPASSWORDCHAR",
1008   "EM_EMPTYUNDOBUFFER",
1009   "EM_GETFIRSTVISIBLELINE",
1010   "EM_SETREADONLY",
1011   "EM_SETWORDBREAKPROC",
1012   "EM_GETWORDBREAKPROC",
1013   "EM_GETPASSWORDCHAR",
1014   "EM_SETMARGINS",
1015   "EM_GETMARGINS",
1016   "EM_GETLIMITTEXT",
1017   "EM_POSFROMCHAR",
1018   "EM_CHARFROMPOS"
1019 };
1020
1021 static const char * const richedit_messages[] = {
1022   "EM_CANPASTE",
1023   "EM_DISPLAYBAND",
1024   "EM_EXGETSEL",
1025   "EM_EXLIMITTEXT",
1026   "EM_EXLINEFROMCHAR",
1027   "EM_EXSETSEL",
1028   "EM_FINDTEXT",
1029   "EM_FORMATRANGE",
1030   "EM_GETCHARFORMAT",
1031   "EM_GETEVENTMASK",
1032   "EM_GETOLEINTERFACE",
1033   "EM_GETPARAFORMAT",
1034   "EM_GETSELTEXT",
1035   "EM_HIDESELECTION",
1036   "EM_PASTESPECIAL",
1037   "EM_REQUESTRESIZE",
1038   "EM_SELECTIONTYPE",
1039   "EM_SETBKGNDCOLOR",
1040   "EM_SETCHARFORMAT",
1041   "EM_SETEVENTMASK",
1042   "EM_SETOLECALLBACK",
1043   "EM_SETPARAFORMAT",
1044   "EM_SETTARGETDEVICE",
1045   "EM_STREAMIN",
1046   "EM_STREAMOUT",
1047   "EM_GETTEXTRANGE",
1048   "EM_FINDWORDBREAK",
1049   "EM_SETOPTIONS",
1050   "EM_GETOPTIONS",
1051   "EM_FINDTEXTEX",
1052   "EM_GETWORDBREAKPROCEX",
1053   "EM_SETWORDBREAKPROCEX",
1054   "EM_SETUNDOLIMIT",
1055   "EM_UNKNOWN_USER_83",
1056   "EM_REDO",
1057   "EM_CANREDO",
1058   "EM_GETUNDONAME",
1059   "EM_GETREDONAME",
1060   "EM_STOPGROUPTYPING",
1061   "EM_SETTEXTMODE",
1062   "EM_GETTEXTMODE",
1063   "EM_AUTOURLDETECT",
1064   "EM_GETAUTOURLDETECT",
1065   "EM_SETPALETTE",
1066   "EM_GETTEXTEX",
1067   "EM_GETTEXTLENGTHEX",
1068   "EM_SHOWSCROLLBAR",
1069   "EM_SETTEXTEX",
1070   "EM_UNKNOWN_USER_98",
1071   "EM_UNKNOWN_USER_99",
1072   "EM_SETPUNCTUATION",
1073   "EM_GETPUNCTUATION",
1074   "EM_SETWORDWRAPMODE",
1075   "EM_GETWORDWRAPMODE",
1076   "EM_SETIMECOLOR",
1077   "EM_GETIMECOLOR",
1078   "EM_SETIMEOPTIONS",
1079   "EM_GETIMEOPTIONS",
1080   "EM_CONVPOSITION",
1081   "EM_UNKNOWN_USER_109",
1082   "EM_UNKNOWN_USER_110",
1083   "EM_UNKNOWN_USER_111",
1084   "EM_UNKNOWN_USER_112",
1085   "EM_UNKNOWN_USER_113",
1086   "EM_UNKNOWN_USER_114",
1087   "EM_UNKNOWN_USER_115",
1088   "EM_UNKNOWN_USER_116",
1089   "EM_UNKNOWN_USER_117",
1090   "EM_UNKNOWN_USER_118",
1091   "EM_UNKNOWN_USER_119",
1092   "EM_SETLANGOPTIONS",
1093   "EM_GETLANGOPTIONS",
1094   "EM_GETIMECOMPMODE",
1095   "EM_FINDTEXTW",
1096   "EM_FINDTEXTEXW",
1097   "EM_RECONVERSION",
1098   "EM_SETIMEMODEBIAS",
1099   "EM_GETIMEMODEBIAS"
1100 };
1101
1102 static const char *
1103 get_msg_name(UINT msg)
1104 {
1105   if (msg >= EM_GETSEL && msg <= EM_SETLIMITTEXT)
1106     return edit_messages[msg - EM_GETSEL];
1107   if (msg >= EM_CANPASTE && msg <= EM_GETIMEMODEBIAS)
1108     return richedit_messages[msg - EM_CANPASTE];
1109   return "";
1110 }
1111
1112 /******************************************************************
1113  *        RichEditANSIWndProc (RICHED20.10)
1114  */
1115 LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
1116   SCROLLINFO si;
1117   ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
1118
1119   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
1120         hWnd, msg, get_msg_name(msg), wParam, lParam);
1121
1122   switch(msg) {
1123
1124   UNSUPPORTED_MSG(EM_AUTOURLDETECT)
1125   UNSUPPORTED_MSG(EM_DISPLAYBAND)
1126   UNSUPPORTED_MSG(EM_EXLIMITTEXT)
1127   UNSUPPORTED_MSG(EM_FINDWORDBREAK)
1128   UNSUPPORTED_MSG(EM_FMTLINES)
1129   UNSUPPORTED_MSG(EM_FORMATRANGE)
1130   UNSUPPORTED_MSG(EM_GETAUTOURLDETECT)
1131   UNSUPPORTED_MSG(EM_GETBIDIOPTIONS)
1132   UNSUPPORTED_MSG(EM_GETEDITSTYLE)
1133   UNSUPPORTED_MSG(EM_GETIMECOMPMODE)
1134   /* UNSUPPORTED_MSG(EM_GETIMESTATUS) missing in Wine headers */
1135   UNSUPPORTED_MSG(EM_GETLANGOPTIONS)
1136   UNSUPPORTED_MSG(EM_GETLIMITTEXT)
1137   UNSUPPORTED_MSG(EM_GETLINE)
1138   /* UNSUPPORTED_MSG(EM_GETOLEINTERFACE) separate stub */
1139   UNSUPPORTED_MSG(EM_GETOPTIONS)
1140   UNSUPPORTED_MSG(EM_GETPASSWORDCHAR)
1141   UNSUPPORTED_MSG(EM_GETREDONAME)
1142   UNSUPPORTED_MSG(EM_GETSCROLLPOS)
1143   UNSUPPORTED_MSG(EM_GETTEXTMODE)
1144   UNSUPPORTED_MSG(EM_GETTYPOGRAPHYOPTIONS)
1145   UNSUPPORTED_MSG(EM_GETUNDONAME)
1146   UNSUPPORTED_MSG(EM_GETWORDBREAKPROC)
1147   UNSUPPORTED_MSG(EM_GETWORDBREAKPROCEX)
1148   UNSUPPORTED_MSG(EM_HIDESELECTION)
1149   UNSUPPORTED_MSG(EM_LIMITTEXT) /* also known as EM_SETLIMITTEXT */
1150   UNSUPPORTED_MSG(EM_PASTESPECIAL)
1151   UNSUPPORTED_MSG(EM_SCROLL)
1152   UNSUPPORTED_MSG(EM_SCROLLCARET)
1153   UNSUPPORTED_MSG(EM_SELECTIONTYPE)
1154   UNSUPPORTED_MSG(EM_SETBIDIOPTIONS)
1155   UNSUPPORTED_MSG(EM_SETEDITSTYLE)
1156   UNSUPPORTED_MSG(EM_SETFONTSIZE)
1157   UNSUPPORTED_MSG(EM_SETLANGOPTIONS)
1158   UNSUPPORTED_MSG(EM_SETOLECALLBACK)
1159   UNSUPPORTED_MSG(EM_SETOPTIONS)
1160   UNSUPPORTED_MSG(EM_SETPALETTE)
1161   UNSUPPORTED_MSG(EM_SETPASSWORDCHAR)
1162   UNSUPPORTED_MSG(EM_SETSCROLLPOS)
1163   UNSUPPORTED_MSG(EM_SETTABSTOPS)
1164   UNSUPPORTED_MSG(EM_SETTARGETDEVICE)
1165   UNSUPPORTED_MSG(EM_SETTEXTMODE)
1166   UNSUPPORTED_MSG(EM_SETTYPOGRAPHYOPTIONS)
1167   UNSUPPORTED_MSG(EM_SETUNDOLIMIT)
1168   UNSUPPORTED_MSG(EM_SETWORDBREAKPROC)
1169   UNSUPPORTED_MSG(EM_SETWORDBREAKPROCEX)
1170   UNSUPPORTED_MSG(EM_SHOWSCROLLBAR)
1171   UNSUPPORTED_MSG(WM_SETFONT)
1172   UNSUPPORTED_MSG(WM_STYLECHANGING)
1173   UNSUPPORTED_MSG(WM_STYLECHANGED)
1174 /*  UNSUPPORTED_MSG(WM_UNICHAR) FIXME missing in Wine headers */
1175
1176 /* Messages specific to Richedit controls */
1177
1178   case EM_STREAMIN:
1179    return ME_StreamIn(editor, wParam, (EDITSTREAM*)lParam);
1180   case EM_STREAMOUT:
1181    return ME_StreamOut(editor, wParam, (EDITSTREAM *)lParam);
1182   case WM_GETDLGCODE:
1183   {
1184     UINT code = DLGC_WANTCHARS|DLGC_WANTARROWS;
1185     if (GetWindowLongW(hWnd, GWL_STYLE)&ES_WANTRETURN)
1186       code |= 0; /* FIXME what can we do here ? ask for messages and censor them ? */
1187     return code;
1188   }
1189   case WM_NCCREATE:
1190   {
1191     CREATESTRUCTW *pcs = (CREATESTRUCTW *)lParam;
1192     TRACE("WM_NCCREATE: style 0x%08lx\n", pcs->style);
1193     editor = ME_MakeEditor(hWnd);
1194     SetWindowLongW(hWnd, 0, (long)editor);
1195     pcs = 0; /* ignore */
1196     return TRUE;
1197   }
1198   case EM_EMPTYUNDOBUFFER:
1199     ME_EmptyUndoStack(editor);
1200     return 0;
1201   case EM_GETSEL:
1202   {
1203     /* Note: wParam/lParam can be NULL */
1204     UINT from, to;
1205     PUINT pfrom = wParam ? (PUINT)wParam : &from;
1206     PUINT pto = lParam ? (PUINT)lParam : &to;
1207     ME_GetSelection(editor, (int *)pfrom, (int *)pto);
1208     if ((*pfrom|*pto) & 0xFFFF0000)
1209       return -1;
1210     return MAKELONG(*pfrom,*pto);
1211   }
1212   case EM_EXGETSEL:
1213   {
1214     CHARRANGE *pRange = (CHARRANGE *)lParam;
1215     ME_GetSelection(editor, (int *)&pRange->cpMin, (int *)&pRange->cpMax);
1216     TRACE("EM_EXGETSEL = (%ld,%ld)\n", pRange->cpMin, pRange->cpMax);
1217     return 0;
1218   }
1219   case EM_CANUNDO:
1220     return editor->pUndoStack != NULL;
1221   case EM_CANREDO:
1222     return editor->pRedoStack != NULL;
1223   case WM_UNDO: /* FIXME: actually not the same */
1224   case EM_UNDO:
1225     ME_Undo(editor);
1226     return 0;
1227   case EM_REDO:
1228     ME_Redo(editor);
1229     return 0;
1230   case EM_SETSEL:
1231   {
1232     ME_SetSelection(editor, wParam, lParam);
1233     ME_Repaint(editor);
1234     ME_SendSelChange(editor);
1235     return 0;
1236   }
1237   case EM_EXSETSEL:
1238   {
1239     CHARRANGE *pRange = (CHARRANGE *)lParam;
1240     TRACE("EM_EXSETSEL (%ld,%ld)\n", pRange->cpMin, pRange->cpMax);
1241     ME_SetSelection(editor, pRange->cpMin, pRange->cpMax);
1242     /* FIXME optimize */
1243     ME_Repaint(editor);
1244     ME_SendSelChange(editor);
1245     return 0;
1246   }
1247   case EM_SETTEXTEX:
1248   {
1249     LPWSTR wszText = (LPWSTR)lParam;
1250     SETTEXTEX *pStruct = (SETTEXTEX *)wParam;
1251     size_t len = lstrlenW(wszText);
1252     int from, to;
1253     ME_Style *style;
1254     TRACE("EM_SETTEXEX - %s, flags %d, cp %d\n", debugstr_w(wszText), (int)pStruct->flags, pStruct->codepage);
1255     if (pStruct->codepage != 1200) {
1256       FIXME("EM_SETTEXTEX only supports unicode right now!\n");
1257       return 0;
1258     }
1259     /* FIXME: this should support RTF strings too, according to MSDN */
1260     if (pStruct->flags & ST_SELECTION) {
1261       ME_GetSelection(editor, &from, &to);
1262       style = ME_GetSelectionInsertStyle(editor);
1263       ME_InternalDeleteText(editor, from, to - from);
1264       ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1265       ME_ReleaseStyle(style);
1266     }
1267     else {
1268       ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1269       ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
1270       len = 1;
1271     }
1272     ME_CommitUndo(editor);
1273     if (!(pStruct->flags & ST_KEEPUNDO))
1274       ME_EmptyUndoStack(editor);
1275     ME_UpdateRepaint(editor);
1276     return len;
1277   }
1278   case EM_SETBKGNDCOLOR:
1279   {
1280     LRESULT lColor = ME_GetBackColor(editor);
1281     if (editor->rgbBackColor != -1)
1282       DeleteObject(editor->hbrBackground);
1283     if (wParam)
1284     {
1285       editor->rgbBackColor = -1;
1286       editor->hbrBackground = GetSysColorBrush(COLOR_WINDOW);
1287     }
1288     else
1289     {
1290       editor->rgbBackColor = lParam;
1291       editor->hbrBackground = CreateSolidBrush(editor->rgbBackColor);
1292     }
1293     if (editor->bRedraw)
1294     {
1295       InvalidateRect(hWnd, NULL, TRUE);
1296       UpdateWindow(hWnd);
1297     }
1298     return lColor;
1299   }
1300   case EM_GETMODIFY:
1301     return editor->nModifyStep == 0 ? 0 : 1;
1302   case EM_SETMODIFY:
1303   {
1304     if (wParam)
1305       editor->nModifyStep = 0x80000000;
1306     else
1307       editor->nModifyStep = 0;
1308
1309     return 0;
1310   }
1311   case EM_SETREADONLY:
1312   {
1313     long nStyle = GetWindowLongW(hWnd, GWL_STYLE);
1314     if (wParam)
1315       nStyle |= ES_READONLY;
1316     else
1317       nStyle &= ~ES_READONLY;
1318     SetWindowLongW(hWnd, GWL_STYLE, nStyle);
1319     ME_Repaint(editor);
1320     return 0;
1321   }
1322   case EM_SETEVENTMASK:
1323   {
1324     DWORD nOldMask = editor->nEventMask;
1325
1326     editor->nEventMask = lParam;
1327     return nOldMask;
1328   }
1329   case EM_GETEVENTMASK:
1330     return editor->nEventMask;
1331   case EM_SETCHARFORMAT:
1332   {
1333     CHARFORMAT2W buf, *p;
1334     BOOL bRepaint = TRUE;
1335     p = ME_ToCF2W(&buf, (CHARFORMAT2W *)lParam);
1336     if (!wParam)
1337       ME_SetDefaultCharFormat(editor, p);
1338     else if (wParam == (SCF_WORD | SCF_SELECTION))
1339       FIXME("EM_SETCHARFORMAT: word selection not supported\n");
1340     else if (wParam == SCF_ALL)
1341       ME_SetCharFormat(editor, 0, ME_GetTextLength(editor), p);
1342     else {
1343       int from, to;
1344       ME_GetSelection(editor, &from, &to);
1345       bRepaint = (from != to);
1346       ME_SetSelectionCharFormat(editor, p);
1347     }
1348     ME_CommitUndo(editor);
1349     if (bRepaint)
1350       ME_UpdateRepaint(editor);
1351     return 0;
1352   }
1353   case EM_GETCHARFORMAT:
1354   {
1355     CHARFORMAT2W tmp, *dst = (CHARFORMAT2W *)lParam;
1356     if (dst->cbSize != sizeof(CHARFORMATA) &&
1357         dst->cbSize != sizeof(CHARFORMATW) &&
1358         dst->cbSize != sizeof(CHARFORMAT2A) &&
1359         dst->cbSize != sizeof(CHARFORMAT2W))
1360       return 0;
1361     tmp.cbSize = sizeof(tmp);
1362     if (!wParam)
1363       ME_GetDefaultCharFormat(editor, &tmp);
1364     else
1365       ME_GetSelectionCharFormat(editor, &tmp);
1366     ME_CopyToCFAny(dst, &tmp);
1367     return tmp.dwMask;
1368   }
1369   case EM_SETPARAFORMAT:
1370     ME_SetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1371     ME_UpdateRepaint(editor);
1372     ME_CommitUndo(editor);
1373     return 0;
1374   case EM_GETPARAFORMAT:
1375     ME_GetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1376     return 0;
1377   case EM_GETFIRSTVISIBLELINE:
1378   {
1379     ME_DisplayItem *p = editor->pBuffer->pFirst;
1380     int y = editor->nScrollPosY;
1381     int ypara = 0;
1382     int count = 0;
1383     int ystart, yend;
1384     while(p) {
1385       p = ME_FindItemFwd(p, diStartRowOrParagraphOrEnd);
1386       if (p->type == diTextEnd)
1387         break;
1388       if (p->type == diParagraph) {
1389         ypara = p->member.para.nYPos;
1390         continue;
1391       }
1392       ystart = ypara + p->member.row.nYPos;
1393       yend = ystart + p->member.row.nHeight;
1394       if (y < yend) {
1395         break;
1396       }
1397       count++;
1398     }
1399     return count;
1400   }
1401   case EM_LINESCROLL:
1402   {
1403     int nPos = editor->nScrollPosY, nEnd= editor->nTotalLength - editor->sizeWindow.cy;
1404     nPos += 8 * lParam; /* FIXME follow the original */
1405     if (nPos>=nEnd)
1406       nPos = nEnd;
1407     if (nPos<0)
1408       nPos = 0;
1409     if (nPos != editor->nScrollPosY) {
1410       int dy = editor->nScrollPosY - nPos;
1411       editor->nScrollPosY = nPos;
1412       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1413       if (editor->bRedraw)
1414       {
1415         ScrollWindow(hWnd, 0, dy, NULL, NULL);
1416         UpdateWindow(hWnd);
1417       }
1418     }
1419     return TRUE; /* Should return false if a single line richedit control */
1420   }
1421   case WM_CLEAR:
1422   {
1423     int from, to;
1424     ME_GetSelection(editor, &from, &to);
1425     ME_InternalDeleteText(editor, from, to-from);
1426     ME_CommitUndo(editor);
1427     ME_UpdateRepaint(editor);
1428     return 0;
1429   }
1430   case EM_REPLACESEL:
1431   {
1432     int from, to;
1433     ME_Style *style;
1434     LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
1435     size_t len = lstrlenW(wszText);
1436     TRACE("EM_REPLACESEL - %s\n", debugstr_w(wszText));
1437
1438     ME_GetSelection(editor, &from, &to);
1439     style = ME_GetSelectionInsertStyle(editor);
1440     ME_InternalDeleteText(editor, from, to-from);
1441     ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1442     ME_ReleaseStyle(style);
1443     ME_EndToUnicode(hWnd, wszText);
1444     /* drop temporary style if line end */
1445     /* FIXME question: does abc\n mean: put abc, clear temp style, put \n? (would require a change) */
1446     if (len>0 && wszText[len-1] == '\n')
1447       ME_ClearTempStyle(editor);
1448
1449     ME_CommitUndo(editor);
1450     if (!wParam)
1451       ME_EmptyUndoStack(editor);
1452     ME_UpdateRepaint(editor);
1453     return 0;
1454   }
1455   case WM_SETTEXT:
1456   {
1457     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1458     if (lParam)
1459     {
1460       LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
1461       TRACE("WM_SETTEXT lParam==%lx\n",lParam);
1462       TRACE("WM_SETTEXT - %s\n", debugstr_w(wszText)); /* debugstr_w() */
1463       if (lstrlenW(wszText) > 0)
1464       {
1465         /* uses default style! */
1466         ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
1467       }
1468       ME_EndToUnicode(hWnd, wszText);
1469     }
1470     else
1471       TRACE("WM_SETTEXT - NULL\n");
1472     ME_CommitUndo(editor);
1473     ME_EmptyUndoStack(editor);
1474     ME_SetSelection(editor, 0, 0);
1475     ME_UpdateRepaint(editor);
1476     return 0;
1477   }
1478   case EM_CANPASTE:
1479   {
1480     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1481     if (IsClipboardFormatAvailable(nRTFFormat))
1482       return TRUE;
1483     if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1484       return TRUE;
1485     return FALSE;
1486   }
1487   case WM_PASTE:
1488   {
1489     DWORD dwFormat = 0;
1490     EDITSTREAM es;
1491     ME_GlobalDestStruct gds;
1492     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1493     UINT cf = 0;
1494
1495     if (IsClipboardFormatAvailable(nRTFFormat))
1496       cf = nRTFFormat, dwFormat = SF_RTF;
1497     else if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1498       cf = CF_UNICODETEXT, dwFormat = SF_TEXT|SF_UNICODE;
1499     else
1500       return 0;
1501
1502     if (!OpenClipboard(hWnd))
1503       return 0;
1504     gds.hData = GetClipboardData(cf);
1505     gds.nLength = 0;
1506     es.dwCookie = (DWORD)&gds;
1507     es.pfnCallback = dwFormat == SF_RTF ? ME_ReadFromHGLOBALRTF : ME_ReadFromHGLOBALUnicode;
1508     SendMessageW(hWnd, EM_STREAMIN, dwFormat|SFF_SELECTION, (LPARAM)&es);
1509
1510     CloseClipboard();
1511     return 0;
1512   }
1513   case WM_CUT:
1514   case WM_COPY:
1515   {
1516     int from, to, pars;
1517     WCHAR *data;
1518     HANDLE hData;
1519     EDITSTREAM es;
1520     ME_GlobalDestStruct gds;
1521
1522     if (!OpenClipboard(hWnd))
1523       return 0;
1524
1525     EmptyClipboard();
1526     ME_GetSelection(editor, &from, &to);
1527     pars = ME_CountParagraphsBetween(editor, from, to);
1528     hData = GlobalAlloc(GMEM_MOVEABLE, sizeof(WCHAR)*(to-from+pars+1));
1529     data = (WCHAR *)GlobalLock(hData);
1530     ME_GetTextW(editor, data, from, to-from, TRUE);
1531     GlobalUnlock(hData);
1532
1533     gds.hData = GlobalAlloc(GMEM_MOVEABLE, 0);
1534     gds.nLength = 0;
1535     es.dwCookie = (DWORD)&gds;
1536     es.pfnCallback = ME_AppendToHGLOBAL;
1537     SendMessageW(hWnd, EM_STREAMOUT, SFF_SELECTION|SF_RTF, (LPARAM)&es);
1538     GlobalReAlloc(gds.hData, gds.nLength+1, 0);
1539
1540     SetClipboardData(CF_UNICODETEXT, hData);
1541     SetClipboardData(RegisterClipboardFormatA("Rich Text Format"), gds.hData);
1542
1543     CloseClipboard();
1544     if (msg == WM_CUT)
1545     {
1546       ME_InternalDeleteText(editor, from, to-from);
1547       ME_CommitUndo(editor);
1548       ME_UpdateRepaint(editor);
1549     }
1550     return 0;
1551   }
1552   case WM_GETTEXTLENGTH:
1553     return ME_GetTextLength(editor);
1554   case EM_GETTEXTLENGTHEX:
1555     return ME_GetTextLengthEx(editor, (GETTEXTLENGTHEX *)wParam);
1556   case WM_GETTEXT:
1557   {
1558     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1559     tr.chrg.cpMin = 0;
1560     tr.chrg.cpMax = wParam-1;
1561     tr.lpstrText = (WCHAR *)lParam;
1562     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1563   }
1564   case EM_GETTEXTEX:
1565   {
1566     GETTEXTEX *ex = (GETTEXTEX*)wParam;
1567     int nStart, nCount;
1568
1569     if (ex->flags & ~(GT_SELECTION | GT_USECRLF))
1570       FIXME("GETTEXTEX flags 0x%08lx not supported\n", ex->flags & ~(GT_SELECTION | GT_USECRLF));
1571
1572     if (ex->flags & GT_SELECTION)
1573     {
1574       ME_GetSelection(editor, &nStart, &nCount);
1575       nCount -= nStart;
1576       nCount = min(nCount, ex->cb - 1);
1577     }
1578     else
1579     {
1580       nStart = 0;
1581       nCount = ex->cb - 1;
1582     }
1583     if (ex->codepage == 1200 || IsWindowUnicode(hWnd))
1584     {
1585       nCount = min(nCount, ex->cb / sizeof(WCHAR) - 1);
1586       return ME_GetTextW(editor, (LPWSTR)lParam, nStart, nCount, ex->flags & GT_USECRLF);
1587     }
1588     else
1589     {
1590       /* potentially each char may be a CR, why calculate the exact value with O(N) when
1591         we can just take a bigger buffer? :) */
1592       int crlfmul = (ex->flags & GT_USECRLF) ? 2 : 1;
1593       LPWSTR buffer = HeapAlloc(GetProcessHeap(), 0, (crlfmul*nCount + 1) * sizeof(WCHAR));
1594       DWORD buflen = ex->cb;
1595       LRESULT rc;
1596       DWORD flags = 0;
1597
1598       buflen = ME_GetTextW(editor, buffer, nStart, nCount, ex->flags & GT_USECRLF);
1599       rc = WideCharToMultiByte(ex->codepage, flags, buffer, buflen, (LPSTR)lParam, ex->cb, ex->lpDefaultChar, ex->lpUsedDefaultChar);
1600
1601       HeapFree(GetProcessHeap(),0,buffer);
1602       return rc;
1603     }
1604   }
1605   case EM_GETSELTEXT:
1606   {
1607     int from, to;
1608     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1609     ME_GetSelection(editor, &from, &to);
1610     tr.chrg.cpMin = from;
1611     tr.chrg.cpMax = to;
1612     tr.lpstrText = (WCHAR *)lParam;
1613     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1614   }
1615   case EM_GETTEXTRANGE:
1616   {
1617     TEXTRANGEW *rng = (TEXTRANGEW *)lParam;
1618     TRACE("EM_GETTEXTRANGE min=%ld max=%ld unicode=%d emul1.0=%d length=%d\n",
1619       rng->chrg.cpMin, rng->chrg.cpMax, IsWindowUnicode(hWnd),
1620       editor->bEmulateVersion10, ME_GetTextLength(editor));
1621     if (IsWindowUnicode(hWnd))
1622       return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, editor->bEmulateVersion10);
1623     else
1624     {
1625       int nLen = rng->chrg.cpMax-rng->chrg.cpMin;
1626       WCHAR *p = ALLOC_N_OBJ(WCHAR, nLen+1);
1627       int nChars = ME_GetTextW(editor, p, rng->chrg.cpMin, nLen, editor->bEmulateVersion10);
1628       /* FIXME this is a potential security hole (buffer overrun)
1629          if you know more about wchar->mbyte conversion please explain
1630       */
1631       WideCharToMultiByte(CP_ACP, 0, p, nChars+1, (char *)rng->lpstrText, nLen+1, NULL, NULL);
1632       FREE_OBJ(p);
1633       return nChars;
1634     }
1635   }
1636   case EM_GETLINECOUNT:
1637   {
1638     ME_DisplayItem *item = editor->pBuffer->pFirst->next;
1639     int nRows = 0;
1640
1641     while (item != editor->pBuffer->pLast)
1642     {
1643       assert(item->type == diParagraph);
1644       nRows += item->member.para.nRows;
1645       item = item->member.para.next_para;
1646     }
1647     TRACE("EM_GETLINECOUNT: nRows==%d\n", nRows);
1648     return max(1, nRows);
1649   }
1650   case EM_LINEFROMCHAR:
1651   {
1652     if (wParam == -1)
1653       return ME_RowNumberFromCharOfs(editor, ME_GetCursorOfs(editor, 1));
1654     else
1655       return ME_RowNumberFromCharOfs(editor, wParam);
1656   }
1657   case EM_EXLINEFROMCHAR:
1658   {
1659     return ME_RowNumberFromCharOfs(editor, lParam);
1660   }
1661   case EM_LINEINDEX:
1662   {
1663     ME_DisplayItem *item, *para;
1664     int nCharOfs;
1665
1666     if (wParam == -1)
1667       item = ME_FindItemBack(editor->pCursors[0].pRun, diStartRow);
1668     else
1669       item = ME_FindRowWithNumber(editor, wParam);
1670     if (!item)
1671       return -1;
1672     para = ME_GetParagraph(item);
1673     item = ME_FindItemFwd(item, diRun);
1674     nCharOfs = para->member.para.nCharOfs + item->member.run.nCharOfs;
1675     TRACE("EM_LINEINDEX: nCharOfs==%d\n", nCharOfs);
1676     return nCharOfs;
1677   }
1678   case EM_LINELENGTH:
1679   {
1680     ME_DisplayItem *item, *item_end;
1681     int nChars = 0, nThisLineOfs = 0, nNextLineOfs = 0;
1682
1683     if (wParam > ME_GetTextLength(editor))
1684       return 0;
1685     if (wParam == -1)
1686     {
1687       FIXME("EM_LINELENGTH: returning number of unselected characters on lines with selection unsupported.\n");
1688       return 0;
1689     }
1690     item = ME_FindItemAtOffset(editor, diRun, wParam, NULL);
1691     item = ME_RowStart(item);
1692     nThisLineOfs = ME_CharOfsFromRunOfs(editor, ME_FindItemFwd(item, diRun), 0);
1693     item_end = ME_FindItemFwd(item, diStartRow);
1694     if (item_end)
1695       nNextLineOfs = ME_CharOfsFromRunOfs(editor, ME_FindItemFwd(item_end, diRun), 0);
1696     else
1697       nNextLineOfs = ME_FindItemFwd(item, diParagraphOrEnd)->member.para.nCharOfs
1698        - (editor->bEmulateVersion10?2:1);
1699     nChars = nNextLineOfs - nThisLineOfs;
1700     TRACE("EM_LINELENGTH(%d)==%d\n",wParam, nChars);
1701     return nChars;
1702   }
1703   case EM_FINDTEXT:
1704   {
1705     FINDTEXTA *ft = (FINDTEXTA *)lParam;
1706     int nChars = MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, NULL, 0);
1707     WCHAR *tmp;
1708
1709     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
1710       MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, tmp, nChars);
1711     return ME_FindText(editor, wParam, &ft->chrg, tmp, NULL);
1712   }
1713   case EM_FINDTEXTEX:
1714   {
1715     FINDTEXTEXA *ex = (FINDTEXTEXA *)lParam;
1716     int nChars = MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, NULL, 0);
1717     WCHAR *tmp;
1718
1719     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
1720       MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, tmp, nChars);
1721     return ME_FindText(editor, wParam, &ex->chrg, tmp, &ex->chrgText);
1722   }
1723   case EM_FINDTEXTW:
1724   {
1725     FINDTEXTW *ft = (FINDTEXTW *)lParam;
1726     return ME_FindText(editor, wParam, &ft->chrg, ft->lpstrText, NULL);
1727   }
1728   case EM_FINDTEXTEXW:
1729   {
1730     FINDTEXTEXW *ex = (FINDTEXTEXW *)lParam;
1731     return ME_FindText(editor, wParam, &ex->chrg, ex->lpstrText, &ex->chrgText);
1732   }
1733   case EM_GETZOOM:
1734     if (!wParam || !lParam)
1735       return FALSE;
1736     *(int *)wParam = editor->nZoomNumerator;
1737     *(int *)lParam = editor->nZoomDenominator;
1738     return TRUE;
1739   case EM_SETZOOM:
1740     return ME_SetZoom(editor, wParam, lParam);
1741   case EM_CHARFROMPOS:
1742     return ME_CharFromPos(editor, ((POINTL *)lParam)->x, ((POINTL *)lParam)->y);
1743   case EM_POSFROMCHAR:
1744   {
1745     ME_DisplayItem *pRun;
1746     int nCharOfs, nOffset, nLength;
1747     POINTL pt = {0,0};
1748
1749     nCharOfs = wParam;
1750     /* detect which API version we're dealing with */
1751     if (wParam >= 0x40000)
1752         nCharOfs = lParam;
1753     nLength = ME_GetTextLength(editor);
1754
1755     if (nCharOfs < nLength) {
1756         ME_RunOfsFromCharOfs(editor, nCharOfs, &pRun, &nOffset);
1757         assert(pRun->type == diRun);
1758         pt.y = pRun->member.run.pt.y;
1759         pt.x = pRun->member.run.pt.x + ME_PointFromChar(editor, &pRun->member.run, nOffset);
1760         pt.y += ME_GetParagraph(pRun)->member.para.nYPos;
1761     } else {
1762         pt.x = 0;
1763         pt.y = editor->pBuffer->pLast->member.para.nYPos;
1764     }
1765     if (wParam >= 0x40000) {
1766         *(POINTL *)wParam = pt;
1767     }
1768     return MAKELONG( pt.x, pt.y );
1769   }
1770   case WM_CREATE:
1771     ME_CommitUndo(editor);
1772     ME_WrapMarkedParagraphs(editor);
1773     ME_MoveCaret(editor);
1774     return 0;
1775   case WM_DESTROY:
1776     ME_DestroyEditor(editor);
1777     SetWindowLongW(hWnd, 0, 0);
1778     return 0;
1779   case WM_LBUTTONDOWN:
1780     SetFocus(hWnd);
1781     ME_LButtonDown(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1782     SetCapture(hWnd);
1783     break;
1784   case WM_MOUSEMOVE:
1785     if (GetCapture() == hWnd)
1786       ME_MouseMove(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1787     break;
1788   case WM_LBUTTONUP:
1789     if (GetCapture() == hWnd)
1790       ReleaseCapture();
1791     break;
1792   case WM_PAINT:
1793     if (editor->bRedraw)
1794     {
1795       HDC hDC;
1796       PAINTSTRUCT ps;
1797
1798       hDC = BeginPaint(hWnd, &ps);
1799       ME_PaintContent(editor, hDC, FALSE, &ps.rcPaint);
1800       EndPaint(hWnd, &ps);
1801     }
1802     break;
1803   case WM_SETFOCUS:
1804     ME_ShowCaret(editor);
1805     ME_SendOldNotify(editor, EN_SETFOCUS);
1806     return 0;
1807   case WM_KILLFOCUS:
1808     ME_HideCaret(editor);
1809     ME_SendOldNotify(editor, EN_KILLFOCUS);
1810     return 0;
1811   case WM_ERASEBKGND:
1812   {
1813     if (editor->bRedraw)
1814     {
1815       HDC hDC = (HDC)wParam;
1816       RECT rc;
1817       if (GetUpdateRect(hWnd,&rc,TRUE))
1818       {
1819         FillRect(hDC, &rc, editor->hbrBackground);
1820       }
1821     }
1822     return 1;
1823   }
1824   case WM_COMMAND:
1825     TRACE("editor wnd command = %d\n", LOWORD(wParam));
1826     return 0;
1827   case WM_KEYDOWN:
1828     if (ME_ArrowKey(editor, LOWORD(wParam), GetKeyState(VK_CONTROL)<0)) {
1829       ME_CommitUndo(editor);
1830       ME_EnsureVisible(editor, editor->pCursors[0].pRun);
1831       HideCaret(hWnd);
1832       ME_MoveCaret(editor);
1833       ShowCaret(hWnd);
1834       return 0;
1835     }
1836     if (GetKeyState(VK_CONTROL)<0)
1837     {
1838       if (LOWORD(wParam)=='W')
1839       {
1840         CHARFORMAT2W chf;
1841         char buf[2048];
1842         ME_GetSelectionCharFormat(editor, &chf);
1843         ME_DumpStyleToBuf(&chf, buf);
1844         MessageBoxA(NULL, buf, "Style dump", MB_OK);
1845       }
1846       if (LOWORD(wParam)=='Q')
1847       {
1848         ME_CheckCharOffsets(editor);
1849       }
1850     }
1851     goto do_default;
1852   case WM_CHAR:
1853   {
1854     WCHAR wstr = LOWORD(wParam);
1855
1856     switch (wstr)
1857     {
1858     case 3: /* Ctrl-C */
1859       SendMessageW(editor->hWnd, WM_COPY, 0, 0);
1860       return 0;
1861     }
1862
1863     if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY) {
1864       MessageBeep(MB_ICONERROR);
1865       return 0; /* FIXME really 0 ? */
1866     }
1867
1868     switch (wstr)
1869     {
1870     case 1: /* Ctrl-A */
1871       ME_SetSelection(editor, 0, -1);
1872       return 0;
1873     case 22: /* Ctrl-V */
1874       SendMessageW(editor->hWnd, WM_PASTE, 0, 0);
1875       return 0;
1876     case 24: /* Ctrl-X */
1877       SendMessageW(editor->hWnd, WM_CUT, 0, 0);
1878       return 0;
1879     case 25: /* Ctrl-Y */
1880       SendMessageW(editor->hWnd, EM_REDO, 0, 0);
1881       return 0;
1882     case 26: /* Ctrl-Z */
1883       SendMessageW(editor->hWnd, EM_UNDO, 0, 0);
1884       return 0;
1885     }
1886     if (((unsigned)wstr)>=' ' || wstr=='\r' || wstr=='\t') {
1887       /* FIXME maybe it would make sense to call EM_REPLACESEL instead ? */
1888       ME_Style *style = ME_GetInsertStyle(editor, 0);
1889       ME_SaveTempStyle(editor);
1890       ME_InsertTextFromCursor(editor, 0, &wstr, 1, style);
1891       ME_ReleaseStyle(style);
1892       ME_CommitUndo(editor);
1893       ME_UpdateRepaint(editor);
1894     }
1895     return 0;
1896   }
1897   case WM_VSCROLL:
1898   {
1899     int nPos = editor->nScrollPosY;
1900     si.cbSize = sizeof(SCROLLINFO);
1901     si.fMask = SIF_PAGE|SIF_POS|SIF_RANGE|SIF_TRACKPOS;
1902     GetScrollInfo(hWnd, SB_VERT, &si);
1903     switch(LOWORD(wParam)) {
1904     case SB_LINEUP:
1905       nPos -= 24; /* FIXME follow the original */
1906       if (nPos<0) nPos = 0;
1907       break;
1908     case SB_LINEDOWN:
1909     {
1910       int nEnd = editor->nTotalLength - editor->sizeWindow.cy;
1911       nPos += 24; /* FIXME follow the original */
1912       if (nPos>=nEnd) nPos = nEnd;
1913       break;
1914     }
1915     case SB_PAGEUP:
1916       nPos -= editor->sizeWindow.cy;
1917       if (nPos<0) nPos = 0;
1918       break;
1919     case SB_PAGEDOWN:
1920       nPos += editor->sizeWindow.cy;
1921       if (nPos>=editor->nTotalLength) nPos = editor->nTotalLength-1;
1922       break;
1923     case SB_THUMBTRACK:
1924     case SB_THUMBPOSITION:
1925       nPos = si.nTrackPos;
1926       break;
1927     }
1928     if (nPos != editor->nScrollPosY) {
1929       int dy = editor->nScrollPosY - nPos;
1930       editor->nScrollPosY = nPos;
1931       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1932       if (editor->bRedraw)
1933       {
1934         ScrollWindow(hWnd, 0, dy, NULL, NULL);
1935         UpdateWindow(hWnd);
1936       }
1937     }
1938     break;
1939   }
1940   case WM_MOUSEWHEEL:
1941   {
1942     int gcWheelDelta = 0, nPos = editor->nScrollPosY, nEnd = editor->nTotalLength - editor->sizeWindow.cy;
1943     UINT pulScrollLines;
1944     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
1945     gcWheelDelta -= GET_WHEEL_DELTA_WPARAM(wParam);
1946     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
1947       nPos += pulScrollLines * (gcWheelDelta / WHEEL_DELTA) * 8; /* FIXME follow the original */
1948     if (nPos>=nEnd)
1949       nPos = nEnd;
1950     if (nPos<0)
1951       nPos = 0;
1952     if (nPos != editor->nScrollPosY) {
1953       int dy = editor->nScrollPosY - nPos;
1954       editor->nScrollPosY = nPos;
1955       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1956       if (editor->bRedraw)
1957       {
1958         ScrollWindow(hWnd, 0, dy, NULL, NULL);
1959         UpdateWindow(hWnd);
1960       }
1961     }
1962     break;
1963   }
1964   case EM_GETRECT:
1965   {
1966     *((RECT *)lParam) = editor->rcFormat;
1967     return 0;
1968   }
1969   case EM_SETRECT:
1970   case EM_SETRECTNP:
1971   {
1972     if (lParam)
1973     {
1974       RECT *rc = (RECT *)lParam;
1975
1976       if (wParam)
1977       {
1978         editor->rcFormat.left += rc->left;
1979         editor->rcFormat.top += rc->top;
1980         editor->rcFormat.right += rc->right;
1981         editor->rcFormat.bottom += rc->bottom;
1982       }
1983       else
1984       {
1985         editor->rcFormat = *rc;
1986       }
1987     }
1988     else
1989     {
1990       GetClientRect(hWnd, &editor->rcFormat);
1991     }
1992     if (msg != EM_SETRECTNP)
1993       ME_RewrapRepaint(editor);
1994     return 0;
1995   }
1996   case EM_REQUESTRESIZE:
1997     ME_SendRequestResize(editor, TRUE);
1998     return 0;
1999   case WM_SETREDRAW:
2000     editor->bRedraw = wParam;
2001     return 0;
2002   case WM_SIZE:
2003   {
2004     GetClientRect(hWnd, &editor->rcFormat);
2005     ME_RewrapRepaint(editor);
2006     return DefWindowProcW(hWnd, msg, wParam, lParam);
2007   }
2008   case EM_GETOLEINTERFACE:
2009   {
2010     LPVOID *ppvObj = (LPVOID*) lParam;
2011     FIXME("EM_GETOLEINTERFACE %p: stub\n", ppvObj);
2012     return CreateIRichEditOle(ppvObj);
2013   }
2014   default:
2015   do_default:
2016     return DefWindowProcW(hWnd, msg, wParam, lParam);
2017   }
2018   return 0L;
2019 }
2020
2021
2022 /******************************************************************
2023  *        RichEdit10ANSIWndProc (RICHED20.9)
2024  */
2025 LRESULT WINAPI RichEdit10ANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
2026 {
2027   LRESULT result;
2028
2029   /* FIXME: this is NOT the same as 2.0 version */
2030   result = RichEditANSIWndProc(hWnd, msg, wParam, lParam);
2031   if (msg == WM_NCCREATE)
2032   {
2033     ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
2034
2035     editor->bEmulateVersion10 = TRUE;
2036     editor->pBuffer->pLast->member.para.nCharOfs = 2;
2037   }
2038   return result;
2039 }
2040
2041 void ME_SendOldNotify(ME_TextEditor *editor, int nCode)
2042 {
2043   HWND hWnd = editor->hWnd;
2044   SendMessageA(GetParent(hWnd), WM_COMMAND, (nCode<<16)|GetWindowLongW(hWnd, GWLP_ID), (LPARAM)hWnd);
2045 }
2046
2047 int ME_CountParagraphsBetween(ME_TextEditor *editor, int from, int to)
2048 {
2049   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
2050   int i = 0;
2051
2052   while(item && item->member.para.next_para->member.para.nCharOfs <= from)
2053     item = item->member.para.next_para;
2054   if (!item)
2055     return 0;
2056   while(item && item->member.para.next_para->member.para.nCharOfs <= to) {
2057     item = item->member.para.next_para;
2058     i++;
2059   }
2060   return i;
2061 }
2062
2063
2064 int ME_GetTextW(ME_TextEditor *editor, WCHAR *buffer, int nStart, int nChars, int bCRLF)
2065 {
2066   ME_DisplayItem *item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
2067   int nWritten = 0;
2068   WCHAR *pStart = buffer;
2069
2070   if (!item) {
2071     *buffer = L'\0';
2072     return 0;
2073   }
2074
2075   if (nStart)
2076   {
2077     int nLen = ME_StrLen(item->member.run.strText) - nStart;
2078     if (nLen > nChars)
2079       nLen = nChars;
2080     CopyMemory(buffer, item->member.run.strText->szData + nStart, sizeof(WCHAR)*nLen);
2081     nChars -= nLen;
2082     nWritten += nLen;
2083     if (!nChars)
2084       return nWritten;
2085     buffer += nLen;
2086     nStart = 0;
2087     item = ME_FindItemFwd(item, diRun);
2088   }
2089
2090   while(nChars && item)
2091   {
2092     int nLen = ME_StrLen(item->member.run.strText);
2093     if (nLen > nChars)
2094       nLen = nChars;
2095
2096     if (item->member.run.nFlags & MERF_ENDPARA)
2097     {
2098       *buffer = '\r';
2099       if (bCRLF)
2100       {
2101         *(++buffer) = '\n';
2102         nWritten++;
2103       }
2104       assert(nLen == 1);
2105       /* our end paragraph consists of 2 characters now */
2106       if (editor->bEmulateVersion10)
2107         nChars--;
2108     }
2109     else
2110       CopyMemory(buffer, item->member.run.strText->szData, sizeof(WCHAR)*nLen);
2111     nChars -= nLen;
2112     nWritten += nLen;
2113     buffer += nLen;
2114
2115     if (!nChars)
2116     {
2117       TRACE("nWritten=%d, actual=%d\n", nWritten, buffer-pStart);
2118       *buffer = L'\0';
2119       return nWritten;
2120     }
2121     item = ME_FindItemFwd(item, diRun);
2122   }
2123   *buffer = L'\0';
2124   TRACE("nWritten=%d, actual=%d\n", nWritten, buffer-pStart);
2125   return nWritten;
2126 }
2127
2128 void ME_RegisterEditorClass(HINSTANCE hInstance)
2129 {
2130   BOOL bResult;
2131   WNDCLASSW wcW;
2132   WNDCLASSA wcA;
2133
2134   wcW.style = CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
2135   wcW.lpfnWndProc = RichEditANSIWndProc;
2136   wcW.cbClsExtra = 0;
2137   wcW.cbWndExtra = 4;
2138   wcW.hInstance = NULL; /* hInstance would register DLL-local class */
2139   wcW.hIcon = NULL;
2140   wcW.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
2141   wcW.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
2142   wcW.lpszMenuName = NULL;
2143   wcW.lpszClassName = wszClassName;
2144   bResult = RegisterClassW(&wcW);
2145   assert(bResult);
2146   wcW.lpszClassName = wszClassName50;
2147   bResult = RegisterClassW(&wcW);
2148   assert(bResult);
2149
2150   wcA.style = CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
2151   wcA.lpfnWndProc = RichEditANSIWndProc;
2152   wcA.cbClsExtra = 0;
2153   wcA.cbWndExtra = 4;
2154   wcA.hInstance = NULL; /* hInstance would register DLL-local class */
2155   wcA.hIcon = NULL;
2156   wcA.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
2157   wcA.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
2158   wcA.lpszMenuName = NULL;
2159   wcA.lpszClassName = "RichEdit20A";
2160   bResult = RegisterClassA(&wcA);
2161   assert(bResult);
2162   wcA.lpszClassName = "RichEdit50A";
2163   bResult = RegisterClassA(&wcA);
2164   assert(bResult);
2165 }
2166 /******************************************************************
2167  *        CreateTextServices (RICHED20.4)
2168  *
2169  * FIXME should be ITextHost instead of void*
2170  */
2171 HRESULT WINAPI CreateTextServices(IUnknown *punkOuter, void *pITextHost,
2172     IUnknown **ppUnk)
2173 {
2174   FIXME("stub\n");
2175   /* FIXME should support aggregation */
2176   if (punkOuter)
2177     return CLASS_E_NOAGGREGATION;
2178
2179   return E_FAIL; /* E_NOTIMPL isn't allowed by MSDN */
2180 }
2181
2182 LRESULT WINAPI REComboWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
2183   /* FIXME: Not implemented */
2184   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
2185         hWnd, msg, get_msg_name(msg), wParam, lParam);
2186   return DefWindowProcW(hWnd, msg, wParam, lParam);
2187 }
2188
2189 LRESULT WINAPI REListWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
2190   /* FIXME: Not implemented */
2191   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
2192         hWnd, msg, get_msg_name(msg), wParam, lParam);
2193   return DefWindowProcW(hWnd, msg, wParam, lParam);
2194 }
2195
2196 /******************************************************************
2197  *        REExtendedRegisterClass (RICHED20.8)
2198  *
2199  * FIXME undocumented
2200  * Need to check for errors and implement controls and callbacks
2201  */
2202 LRESULT WINAPI REExtendedRegisterClass(void)
2203 {
2204   WNDCLASSW wcW;
2205   UINT result;
2206
2207   FIXME("semi stub\n");
2208
2209   wcW.cbClsExtra = 0;
2210   wcW.cbWndExtra = 4;
2211   wcW.hInstance = NULL;
2212   wcW.hIcon = NULL;
2213   wcW.hCursor = NULL;
2214   wcW.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
2215   wcW.lpszMenuName = NULL;
2216
2217   if (!ME_ListBoxRegistered)
2218   {
2219       wcW.style = CS_PARENTDC | CS_DBLCLKS | CS_GLOBALCLASS;
2220       wcW.lpfnWndProc = REListWndProc;
2221       wcW.lpszClassName = wszClassNameListBox;
2222       if (RegisterClassW(&wcW)) ME_ListBoxRegistered = TRUE;
2223   }
2224
2225   if (!ME_ComboBoxRegistered)
2226   {
2227       wcW.style = CS_PARENTDC | CS_DBLCLKS | CS_GLOBALCLASS | CS_VREDRAW | CS_HREDRAW;
2228       wcW.lpfnWndProc = REComboWndProc;
2229       wcW.lpszClassName = wszClassNameComboBox;
2230       if (RegisterClassW(&wcW)) ME_ComboBoxRegistered = TRUE;
2231   }
2232
2233   result = 0;
2234   if (ME_ListBoxRegistered)
2235       result += 1;
2236   if (ME_ComboBoxRegistered)
2237       result += 2;
2238
2239   return result;
2240 }