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