reactos/lib/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
  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_POSFROMCHARS
  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) - not supported in RICHEDIT
 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 < STREAMIN_BUFFER_SIZE)
 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   }
 397 }
 398
 399 /* FIXME this function doesn't get any information about context of the RTF tag, which is very bad,
 400    the same tags mean different things in different contexts */
 401 static void ME_RTFParAttrHook(RTF_Info *info)
 402 {
 403   PARAFORMAT2 fmt;
 404   fmt.cbSize = sizeof(fmt);
 405   fmt.dwMask = 0;
 406
 407   switch(info->rtfMinor)
 408   {
 409   case rtfParDef: /* I'm not 100% sure what does it do, but I guess it restores default paragraph attributes */
 410     fmt.dwMask = PFM_ALIGNMENT | PFM_TABSTOPS | PFM_OFFSET | PFM_STARTINDENT;
 411     fmt.wAlignment = PFA_LEFT;
 412     fmt.cTabCount = 0;
 413     fmt.dxOffset = fmt.dxStartIndent = 0;
 414     break;
 415   case rtfFirstIndent:
 416     ME_GetSelectionParaFormat(info->editor, &fmt);
 417     fmt.dwMask = PFM_STARTINDENT;
 418     fmt.dxStartIndent = info->rtfParam + fmt.dxOffset;
 419     break;
 420   case rtfLeftIndent:
 421   {
 422     int first, left;
 423     ME_GetSelectionParaFormat(info->editor, &fmt);
 424     first = fmt.dxStartIndent;
 425     left = info->rtfParam;
 426     fmt.dwMask = PFM_STARTINDENT|PFM_OFFSET;
 427     fmt.dxStartIndent = first + left;
 428     fmt.dxOffset = -first;
 429     break;
 430   }
 431   case rtfRightIndent:
 432     fmt.dwMask = PFM_RIGHTINDENT;
 433     fmt.dxRightIndent = info->rtfParam;
 434     break;
 435   case rtfQuadLeft:
 436   case rtfQuadJust:
 437     fmt.dwMask = PFM_ALIGNMENT;
 438     fmt.wAlignment = PFA_LEFT;
 439     break;
 440   case rtfQuadRight:
 441     fmt.dwMask = PFM_ALIGNMENT;
 442     fmt.wAlignment = PFA_RIGHT;
 443     break;
 444   case rtfQuadCenter:
 445     fmt.dwMask = PFM_ALIGNMENT;
 446     fmt.wAlignment = PFA_CENTER;
 447     break;
 448   case rtfTabPos:
 449     ME_GetSelectionParaFormat(info->editor, &fmt);
 450     if (!(fmt.dwMask & PFM_TABSTOPS))
 451     {
 452       fmt.dwMask |= PFM_TABSTOPS;
 453       fmt.cTabCount = 0;
 454     }
 455     if (fmt.cTabCount < MAX_TAB_STOPS)
 456       fmt.rgxTabs[fmt.cTabCount++] = info->rtfParam;
 457     break;
 458   }
 459   if (fmt.dwMask) {
 460     RTFFlushOutputBuffer(info);
 461     /* FIXME too slow ? how come ?*/
 462     ME_SetSelectionParaFormat(info->editor, &fmt);
 463   }
 464 }
 465
 466 static void ME_RTFReadHook(RTF_Info *info) {
 467   switch(info->rtfClass)
 468   {
 469     case rtfGroup:
 470       switch(info->rtfMajor)
 471       {
 472         case rtfBeginGroup:
 473           if (info->stackTop < maxStack) {
 474             memcpy(&info->stack[info->stackTop].fmt, &info->style->fmt, sizeof(CHARFORMAT2W));
 475             info->stack[info->stackTop].codePage = info->codePage;
 476             info->stack[info->stackTop].unicodeLength = info->unicodeLength;
 477           }
 478           info->stackTop++;
 479           break;
 480         case rtfEndGroup:
 481         {
 482           ME_Style *s;
 483           RTFFlushOutputBuffer(info);
 484           info->stackTop--;
 485           /* FIXME too slow ? how come ? */
 486           s = ME_ApplyStyle(info->style, &info->stack[info->stackTop].fmt);
 487           ME_ReleaseStyle(info->style);
 488           info->style = s;
 489           info->codePage = info->stack[info->stackTop].codePage;
 490           info->unicodeLength = info->stack[info->stackTop].unicodeLength;
 491           break;
 492         }
 493       }
 494       break;
 495     case rtfControl:
 496       switch(info->rtfMajor)
 497       {
 498         case rtfCharAttr:
 499           ME_RTFCharAttrHook(info);
 500           break;
 501         case rtfParAttr:
 502           ME_RTFParAttrHook(info);
 503           break;
 504       }
 505       break;
 506   }
 507 }
 508
 509 void
 510 ME_StreamInFill(ME_InStream *stream)
 511 {
 512   stream->editstream->dwError = stream->editstream->pfnCallback(stream->editstream->dwCookie,
 513                                                                 stream->buffer,
 514                                                                 sizeof(stream->buffer),
 515                                                                 &stream->dwSize);
 516   stream->dwUsed = 0;
 517 }
 518
 519 static LRESULT ME_StreamIn(ME_TextEditor *editor, DWORD format, EDITSTREAM *stream)
 520 {
 521   RTF_Info parser;
 522   ME_Style *style;
 523   int from, to, to2, nUndoMode;
 524   ME_UndoItem *pUI;
 525   int nEventMask = editor->nEventMask;
 526   ME_InStream inStream;
 527
 528   TRACE("stream==%p hWnd==%p format==0x%X\n", stream, editor->hWnd, (UINT)format);
 529   editor->nEventMask = 0;
 530
 531   ME_GetSelection(editor, &from, &to);
 532   if (format & SFF_SELECTION) {
 533     style = ME_GetSelectionInsertStyle(editor);
 534
 535     ME_InternalDeleteText(editor, from, to-from);
 536   }
 537   else {
 538     style = editor->pBuffer->pDefaultStyle;
 539     ME_AddRefStyle(style);
 540     SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 541     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
 542     from = to = 0;
 543     ME_ClearTempStyle(editor);
 544     /* FIXME restore default paragraph formatting ! */
 545   }
 546
 547   nUndoMode = editor->nUndoMode;
 548   editor->nUndoMode = umIgnore;
 549
 550   inStream.editstream = stream;
 551   inStream.editstream->dwError = 0;
 552   inStream.dwSize = 0;
 553   inStream.dwUsed = 0;
 554
 555   if (format & SF_RTF)
 556   {
 557     /* Check if it's really RTF, and if it is not, use plain text */
 558     ME_StreamInFill(&inStream);
 559     if (!inStream.editstream->dwError)
 560     {
 561       if (strncmp(inStream.buffer, "{\\rtf1", 6) && strncmp(inStream.buffer, "{\\urtf", 6))
 562       {
 563         format &= ~SF_RTF;
 564         format |= SF_TEXT;
 565       }
 566     }
 567   }
 568
 569   if (!inStream.editstream->dwError)
 570   {
 571     if (format & SF_RTF) {
 572       /* setup the RTF parser */
 573       memset(&parser, 0, sizeof parser);
 574       RTFSetEditStream(&parser, &inStream);
 575       parser.rtfFormat = format&(SF_TEXT|SF_RTF);
 576       parser.hwndEdit = editor->hWnd;
 577       parser.editor = editor;
 578       parser.style = style;
 579       WriterInit(&parser);
 580       RTFInit(&parser);
 581       RTFSetReadHook(&parser, ME_RTFReadHook);
 582       BeginFile(&parser);
 583
 584       /* do the parsing */
 585       RTFRead(&parser);
 586       RTFFlushOutputBuffer(&parser);
 587       RTFDestroy(&parser);
 588
 589       style = parser.style;
 590     }
 591     else if (format & SF_TEXT)
 592       ME_StreamInText(editor, format, &inStream, style);
 593     else
 594       ERR("EM_STREAMIN without SF_TEXT or SF_RTF\n");
 595     ME_GetSelection(editor, &to, &to2);
 596     /* put the cursor at the top */
 597     if (!(format & SFF_SELECTION))
 598       SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 599     else
 600     {
 601       /* FIXME where to put cursor now ? */
 602     }
 603   }
 604
 605   editor->nUndoMode = nUndoMode;
 606   pUI = ME_AddUndoItem(editor, diUndoDeleteRun, NULL);
 607   TRACE("from %d to %d\n", from, to);
 608   if (pUI && from < to)
 609   {
 610     pUI->nStart = from;
 611     pUI->nLen = to-from;
 612   }
 613   ME_CommitUndo(editor);
 614   ME_ReleaseStyle(style);
 615   editor->nEventMask = nEventMask;
 616   InvalidateRect(editor->hWnd, NULL, TRUE);
 617   ME_UpdateRepaint(editor);
 618   if (!(format & SFF_SELECTION)) {
 619     ME_ClearTempStyle(editor);
 620   }
 621   ME_MoveCaret(editor);
 622   ME_SendSelChange(editor);
 623
 624   return 0;
 625 }
 626
 627
 628 ME_DisplayItem *
 629 ME_FindItemAtOffset(ME_TextEditor *editor, ME_DIType nItemType, int nOffset, int *nItemOffset)
 630 {
 631   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
 632
 633   while (item && item->member.para.next_para->member.para.nCharOfs <= nOffset)
 634     item = ME_FindItemFwd(item, diParagraph);
 635
 636   if (!item)
 637     return item;
 638
 639   nOffset -= item->member.para.nCharOfs;
 640   if (nItemType == diParagraph) {
 641     if (nItemOffset)
 642       *nItemOffset = nOffset;
 643     return item;
 644   }
 645
 646   do {
 647     item = ME_FindItemFwd(item, diRun);
 648   } while (item && (item->member.run.nCharOfs + ME_StrLen(item->member.run.strText) <= nOffset));
 649   if (item) {
 650     nOffset -= item->member.run.nCharOfs;
 651     if (nItemOffset)
 652       *nItemOffset = nOffset;
 653   }
 654   return item;
 655 }
 656
 657
 658 static int
 659 ME_FindText(ME_TextEditor *editor, DWORD flags, CHARRANGE *chrg, WCHAR *text, CHARRANGE *chrgText)
 660 {
 661   int nStart = chrg->cpMin;
 662   int nLen = lstrlenW(text);
 663   ME_DisplayItem *item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
 664   ME_DisplayItem *para;
 665
 666   if (!item)
 667     return -1;
 668
 669   if (!nLen)
 670   {
 671     if (chrgText)
 672       chrgText->cpMin = chrgText->cpMax = chrg->cpMin;
 673     return chrg->cpMin;
 674   }
 675
 676   if (!(flags & FR_DOWN))
 677     FIXME("Backward search not implemented\n");
 678   if (!(flags & FR_MATCHCASE))
 679     FIXME("Case-insensitive search not implemented\n");
 680   if (flags & ~(FR_DOWN | FR_MATCHCASE))
 681     FIXME("Flags 0x%08lx not implemented\n", flags & ~(FR_DOWN | FR_MATCHCASE));
 682
 683   para = ME_GetParagraph(item);
 684   while (item && para->member.para.nCharOfs + item->member.run.nCharOfs + nStart + nLen < chrg->cpMax)
 685   {
 686     ME_DisplayItem *pCurItem = item;
 687     int nCurStart = nStart;
 688     int nMatched = 0;
 689
 690     while (pCurItem->member.run.strText->szData[nCurStart + nMatched] == text[nMatched])
 691     {
 692       nMatched++;
 693       if (nMatched == nLen)
 694       {
 695         nStart += para->member.para.nCharOfs + item->member.run.nCharOfs;
 696         if (chrgText)
 697         {
 698           chrgText->cpMin = nStart;
 699           chrgText->cpMax = nStart + nLen;
 700         }
 701         return nStart;
 702       }
 703       if (nCurStart + nMatched == ME_StrLen(pCurItem->member.run.strText))
 704       {
 705         pCurItem = ME_FindItemFwd(pCurItem, diRun);
 706         nCurStart = -nMatched;
 707       }
 708     }
 709     nStart++;
 710     if (nStart == ME_StrLen(item->member.run.strText))
 711     {
 712       item = ME_FindItemFwd(item, diRun);
 713       para = ME_GetParagraph(item);
 714       nStart = 0;
 715     }
 716   }
 717   return -1;
 718 }
 719
 720
 721 ME_TextEditor *ME_MakeEditor(HWND hWnd) {
 722   ME_TextEditor *ed = ALLOC_OBJ(ME_TextEditor);
 723   HDC hDC;
 724   int i;
 725   ed->hWnd = hWnd;
 726   ed->bEmulateVersion10 = FALSE;
 727   ed->pBuffer = ME_MakeText();
 728   hDC = GetDC(hWnd);
 729   ME_MakeFirstParagraph(hDC, ed->pBuffer);
 730   ReleaseDC(hWnd, hDC);
 731   ed->bCaretShown = FALSE;
 732   ed->nCursors = 3;
 733   ed->pCursors = ALLOC_N_OBJ(ME_Cursor, ed->nCursors);
 734   ed->pCursors[0].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
 735   ed->pCursors[0].nOffset = 0;
 736   ed->pCursors[1].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
 737   ed->pCursors[1].nOffset = 0;
 738   ed->nLastTotalLength = ed->nTotalLength = 0;
 739   ed->nUDArrowX = -1;
 740   ed->nSequence = 0;
 741   ed->rgbBackColor = -1;
 742   ed->bCaretAtEnd = FALSE;
 743   ed->nEventMask = 0;
 744   ed->nModifyStep = 0;
 745   ed->pUndoStack = ed->pRedoStack = NULL;
 746   ed->nUndoMode = umAddToUndo;
 747   ed->nParagraphs = 1;
 748   ed->nLastSelStart = ed->nLastSelEnd = 0;
 749   ed->nScrollPosY = 0;
 750   ed->nZoomNumerator = ed->nZoomDenominator = 0;
 751   for (i=0; i<HFONT_CACHE_SIZE; i++)
 752   {
 753     ed->pFontCache[i].nRefs = 0;
 754     ed->pFontCache[i].nAge = 0;
 755     ed->pFontCache[i].hFont = NULL;
 756   }
 757   ME_CheckCharOffsets(ed);
 758   return ed;
 759 }
 760
 761 typedef struct tagME_GlobalDestStruct
 762 {
 763   HGLOBAL hData;
 764   int nLength;
 765 } ME_GlobalDestStruct;
 766
 767 static DWORD CALLBACK ME_AppendToHGLOBAL(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 768 {
 769   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 770   int nMaxSize;
 771   BYTE *pDest;
 772
 773   nMaxSize = GlobalSize(pData->hData);
 774   if (pData->nLength+cb+1 >= cb)
 775   {
 776     /* round up to 2^17 */
 777     int nNewSize = (((nMaxSize+cb+1)|0x1FFFF)+1) & 0xFFFE0000;
 778     pData->hData = GlobalReAlloc(pData->hData, nNewSize, 0);
 779   }
 780   pDest = (BYTE *)GlobalLock(pData->hData);
 781   memcpy(pDest + pData->nLength, lpBuff, cb);
 782   pData->nLength += cb;
 783   pDest[pData->nLength] = '\0';
 784   GlobalUnlock(pData->hData);
 785   *pcb = cb;
 786
 787   return 0;
 788 }
 789
 790 static DWORD CALLBACK ME_ReadFromHGLOBALUnicode(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 791 {
 792   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 793   int i;
 794   WORD *pSrc, *pDest;
 795
 796   cb = cb >> 1;
 797   pDest = (WORD *)lpBuff;
 798   pSrc = (WORD *)GlobalLock(pData->hData);
 799   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
 800     pDest[i] = pSrc[pData->nLength+i];
 801   }
 802   pData->nLength += i;
 803   *pcb = 2*i;
 804   GlobalUnlock(pData->hData);
 805   return 0;
 806 }
 807
 808 static DWORD CALLBACK ME_ReadFromHGLOBALRTF(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 809 {
 810   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 811   int i;
 812   BYTE *pSrc, *pDest;
 813
 814   pDest = lpBuff;
 815   pSrc = (BYTE *)GlobalLock(pData->hData);
 816   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
 817     pDest[i] = pSrc[pData->nLength+i];
 818   }
 819   pData->nLength += i;
 820   *pcb = i;
 821   GlobalUnlock(pData->hData);
 822   return 0;
 823 }
 824
 825
 826 void ME_DestroyEditor(ME_TextEditor *editor)
 827 {
 828   ME_DisplayItem *pFirst = editor->pBuffer->pFirst;
 829   ME_DisplayItem *p = pFirst, *pNext = NULL;
 830   int i;
 831
 832   ME_ClearTempStyle(editor);
 833   ME_EmptyUndoStack(editor);
 834   while(p) {
 835     pNext = p->next;
 836     ME_DestroyDisplayItem(p);
 837     p = pNext;
 838   }
 839   ME_ReleaseStyle(editor->pBuffer->pDefaultStyle);
 840   for (i=0; i<HFONT_CACHE_SIZE; i++)
 841   {
 842     if (editor->pFontCache[i].hFont)
 843       DeleteObject(editor->pFontCache[i].hFont);
 844   }
 845
 846   FREE_OBJ(editor);
 847 }
 848
 849 static WCHAR wszClassName[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '2', '0', 'W', 0};
 850 static WCHAR wszClassName50[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '5', '0', 'W', 0};
 851
 852 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 853 {
 854     TRACE("\n");
 855     switch (fdwReason)
 856     {
 857     case DLL_PROCESS_ATTACH:
 858       DisableThreadLibraryCalls(hinstDLL);
 859       me_heap = HeapCreate (0, 0x10000, 0);
 860       ME_RegisterEditorClass(hinstDLL);
 861       break;
 862
 863     case DLL_PROCESS_DETACH:
 864       UnregisterClassW(wszClassName, 0);
 865       UnregisterClassW(wszClassName50, 0);
 866       UnregisterClassA("RichEdit20A", 0);
 867       UnregisterClassA("RichEdit50A", 0);
 868       HeapDestroy (me_heap);
 869       me_heap = NULL;
 870       break;
 871     }
 872     return TRUE;
 873 }
 874
 875
 876 #define UNSUPPORTED_MSG(e) \
 877   case e: \
 878     FIXME(#e ": stub\n"); \
 879     return DefWindowProcW(hWnd, msg, wParam, lParam);
 880
 881 static const char * const edit_messages[] = {
 882   "EM_GETSEL",
 883   "EM_SETSEL",
 884   "EM_GETRECT",
 885   "EM_SETRECT",
 886   "EM_SETRECTNP",
 887   "EM_SCROLL",
 888   "EM_LINESCROLL",
 889   "EM_SCROLLCARET",
 890   "EM_GETMODIFY",
 891   "EM_SETMODIFY",
 892   "EM_GETLINECOUNT",
 893   "EM_LINEINDEX",
 894   "EM_SETHANDLE",
 895   "EM_GETHANDLE",
 896   "EM_GETTHUMB",
 897   "EM_UNKNOWN_BF",
 898   "EM_UNKNOWN_C0",
 899   "EM_LINELENGTH",
 900   "EM_REPLACESEL",
 901   "EM_UNKNOWN_C3",
 902   "EM_GETLINE",
 903   "EM_LIMITTEXT",
 904   "EM_CANUNDO",
 905   "EM_UNDO",
 906   "EM_FMTLINES",
 907   "EM_LINEFROMCHAR",
 908   "EM_UNKNOWN_CA",
 909   "EM_SETTABSTOPS",
 910   "EM_SETPASSWORDCHAR",
 911   "EM_EMPTYUNDOBUFFER",
 912   "EM_GETFIRSTVISIBLELINE",
 913   "EM_SETREADONLY",
 914   "EM_SETWORDBREAKPROC",
 915   "EM_GETWORDBREAKPROC",
 916   "EM_GETPASSWORDCHAR",
 917   "EM_SETMARGINS",
 918   "EM_GETMARGINS",
 919   "EM_GETLIMITTEXT",
 920   "EM_POSFROMCHAR",
 921   "EM_CHARFROMPOS"
 922 };
 923
 924 static const char * const richedit_messages[] = {
 925   "EM_CANPASTE",
 926   "EM_DISPLAYBAND",
 927   "EM_EXGETSEL",
 928   "EM_EXLIMITTEXT",
 929   "EM_EXLINEFROMCHAR",
 930   "EM_EXSETSEL",
 931   "EM_FINDTEXT",
 932   "EM_FORMATRANGE",
 933   "EM_GETCHARFORMAT",
 934   "EM_GETEVENTMASK",
 935   "EM_GETOLEINTERFACE",
 936   "EM_GETPARAFORMAT",
 937   "EM_GETSELTEXT",
 938   "EM_HIDESELECTION",
 939   "EM_PASTESPECIAL",
 940   "EM_REQUESTRESIZE",
 941   "EM_SELECTIONTYPE",
 942   "EM_SETBKGNDCOLOR",
 943   "EM_SETCHARFORMAT",
 944   "EM_SETEVENTMASK",
 945   "EM_SETOLECALLBACK",
 946   "EM_SETPARAFORMAT",
 947   "EM_SETTARGETDEVICE",
 948   "EM_STREAMIN",
 949   "EM_STREAMOUT",
 950   "EM_GETTEXTRANGE",
 951   "EM_FINDWORDBREAK",
 952   "EM_SETOPTIONS",
 953   "EM_GETOPTIONS",
 954   "EM_FINDTEXTEX",
 955   "EM_GETWORDBREAKPROCEX",
 956   "EM_SETWORDBREAKPROCEX",
 957   "EM_SETUNDOLIMIT",
 958   "EM_UNKNOWN_USER_83",
 959   "EM_REDO",
 960   "EM_CANREDO",
 961   "EM_GETUNDONAME",
 962   "EM_GETREDONAME",
 963   "EM_STOPGROUPTYPING",
 964   "EM_SETTEXTMODE",
 965   "EM_GETTEXTMODE",
 966   "EM_AUTOURLDETECT",
 967   "EM_GETAUTOURLDETECT",
 968   "EM_SETPALETTE",
 969   "EM_GETTEXTEX",
 970   "EM_GETTEXTLENGTHEX",
 971   "EM_SHOWSCROLLBAR",
 972   "EM_SETTEXTEX",
 973   "EM_UNKNOWN_USER_98",
 974   "EM_UNKNOWN_USER_99",
 975   "EM_SETPUNCTUATION",
 976   "EM_GETPUNCTUATION",
 977   "EM_SETWORDWRAPMODE",
 978   "EM_GETWORDWRAPMODE",
 979   "EM_SETIMECOLOR",
 980   "EM_GETIMECOLOR",
 981   "EM_SETIMEOPTIONS",
 982   "EM_GETIMEOPTIONS",
 983   "EM_CONVPOSITION",
 984   "EM_UNKNOWN_USER_109",
 985   "EM_UNKNOWN_USER_110",
 986   "EM_UNKNOWN_USER_111",
 987   "EM_UNKNOWN_USER_112",
 988   "EM_UNKNOWN_USER_113",
 989   "EM_UNKNOWN_USER_114",
 990   "EM_UNKNOWN_USER_115",
 991   "EM_UNKNOWN_USER_116",
 992   "EM_UNKNOWN_USER_117",
 993   "EM_UNKNOWN_USER_118",
 994   "EM_UNKNOWN_USER_119",
 995   "EM_SETLANGOPTIONS",
 996   "EM_GETLANGOPTIONS",
 997   "EM_GETIMECOMPMODE",
 998   "EM_FINDTEXTW",
 999   "EM_FINDTEXTEXW",
1000   "EM_RECONVERSION",
1001   "EM_SETIMEMODEBIAS",
1002   "EM_GETIMEMODEBIAS"
1003 };
1004
1005 static const char *
1006 get_msg_name(UINT msg)
1007 {
1008   if (msg >= EM_GETSEL && msg <= EM_SETLIMITTEXT)
1009     return edit_messages[msg - EM_GETSEL];
1010   if (msg >= EM_CANPASTE && msg <= EM_GETIMEMODEBIAS)
1011     return richedit_messages[msg - EM_CANPASTE];
1012   return "";
1013 }
1014
1015 /******************************************************************
1016  *        RichEditANSIWndProc (RICHED20.10)
1017  */
1018 LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
1019   HDC hDC;
1020   PAINTSTRUCT ps;
1021   SCROLLINFO si;
1022   ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
1023
1024   TRACE("msg %d (%s) %08x %08lx\n", msg, get_msg_name(msg), wParam, lParam);
1025
1026   switch(msg) {
1027
1028   UNSUPPORTED_MSG(EM_AUTOURLDETECT)
1029   UNSUPPORTED_MSG(EM_CHARFROMPOS)
1030   UNSUPPORTED_MSG(EM_DISPLAYBAND)
1031   UNSUPPORTED_MSG(EM_EXLIMITTEXT)
1032   UNSUPPORTED_MSG(EM_FINDWORDBREAK)
1033   UNSUPPORTED_MSG(EM_FMTLINES)
1034   UNSUPPORTED_MSG(EM_FORMATRANGE)
1035   UNSUPPORTED_MSG(EM_GETAUTOURLDETECT)
1036   UNSUPPORTED_MSG(EM_GETBIDIOPTIONS)
1037   UNSUPPORTED_MSG(EM_GETEDITSTYLE)
1038   UNSUPPORTED_MSG(EM_GETFIRSTVISIBLELINE)
1039   UNSUPPORTED_MSG(EM_GETIMECOMPMODE)
1040   /* UNSUPPORTED_MSG(EM_GETIMESTATUS) missing in Wine headers */
1041   UNSUPPORTED_MSG(EM_GETLANGOPTIONS)
1042   UNSUPPORTED_MSG(EM_GETLIMITTEXT)
1043   UNSUPPORTED_MSG(EM_GETLINE)
1044   /* UNSUPPORTED_MSG(EM_GETOLEINTERFACE) separate stub */
1045   UNSUPPORTED_MSG(EM_GETOPTIONS)
1046   UNSUPPORTED_MSG(EM_GETPASSWORDCHAR)
1047   UNSUPPORTED_MSG(EM_GETRECT)
1048   UNSUPPORTED_MSG(EM_GETREDONAME)
1049   UNSUPPORTED_MSG(EM_GETSCROLLPOS)
1050   UNSUPPORTED_MSG(EM_GETTEXTMODE)
1051   UNSUPPORTED_MSG(EM_GETTYPOGRAPHYOPTIONS)
1052   UNSUPPORTED_MSG(EM_GETUNDONAME)
1053   UNSUPPORTED_MSG(EM_GETWORDBREAKPROC)
1054   UNSUPPORTED_MSG(EM_GETWORDBREAKPROCEX)
1055   UNSUPPORTED_MSG(EM_HIDESELECTION)
1056   UNSUPPORTED_MSG(EM_LIMITTEXT) /* also known as EM_SETLIMITTEXT */
1057   UNSUPPORTED_MSG(EM_PASTESPECIAL)
1058 /*  UNSUPPORTED_MSG(EM_POSFROMCHARS) missing in Wine headers */
1059   UNSUPPORTED_MSG(EM_REQUESTRESIZE)
1060   UNSUPPORTED_MSG(EM_SCROLL)
1061   UNSUPPORTED_MSG(EM_SCROLLCARET)
1062   UNSUPPORTED_MSG(EM_SELECTIONTYPE)
1063   UNSUPPORTED_MSG(EM_SETBIDIOPTIONS)
1064   UNSUPPORTED_MSG(EM_SETEDITSTYLE)
1065   UNSUPPORTED_MSG(EM_SETFONTSIZE)
1066   UNSUPPORTED_MSG(EM_SETLANGOPTIONS)
1067   UNSUPPORTED_MSG(EM_SETOLECALLBACK)
1068   UNSUPPORTED_MSG(EM_SETOPTIONS)
1069   UNSUPPORTED_MSG(EM_SETPALETTE)
1070   UNSUPPORTED_MSG(EM_SETPASSWORDCHAR)
1071   UNSUPPORTED_MSG(EM_SETRECT)
1072   UNSUPPORTED_MSG(EM_SETRECTNP)
1073   UNSUPPORTED_MSG(EM_SETSCROLLPOS)
1074   UNSUPPORTED_MSG(EM_SETTABSTOPS)
1075   UNSUPPORTED_MSG(EM_SETTARGETDEVICE)
1076   UNSUPPORTED_MSG(EM_SETTEXTMODE)
1077   UNSUPPORTED_MSG(EM_SETTYPOGRAPHYOPTIONS)
1078   UNSUPPORTED_MSG(EM_SETUNDOLIMIT)
1079   UNSUPPORTED_MSG(EM_SETWORDBREAKPROC)
1080   UNSUPPORTED_MSG(EM_SETWORDBREAKPROCEX)
1081   UNSUPPORTED_MSG(EM_SHOWSCROLLBAR)
1082   UNSUPPORTED_MSG(WM_SETFONT)
1083   UNSUPPORTED_MSG(WM_STYLECHANGING)
1084   UNSUPPORTED_MSG(WM_STYLECHANGED)
1085 /*  UNSUPPORTED_MSG(WM_UNICHAR) FIXME missing in Wine headers */
1086
1087 /* Messages specific to Richedit controls */
1088
1089   case EM_STREAMIN:
1090    return ME_StreamIn(editor, wParam, (EDITSTREAM*)lParam);
1091   case EM_STREAMOUT:
1092    return ME_StreamOut(editor, wParam, (EDITSTREAM *)lParam);
1093   case WM_GETDLGCODE:
1094   {
1095     UINT code = DLGC_WANTCHARS|DLGC_WANTARROWS;
1096     if (GetWindowLongW(hWnd, GWL_STYLE)&ES_WANTRETURN)
1097       code |= 0; /* FIXME what can we do here ? ask for messages and censor them ? */
1098     return code;
1099   }
1100   case WM_NCCREATE:
1101   {
1102     CREATESTRUCTW *pcs = (CREATESTRUCTW *)lParam;
1103     TRACE("WM_NCCREATE: style 0x%08lx\n", pcs->style);
1104     editor = ME_MakeEditor(hWnd);
1105     SetWindowLongW(hWnd, 0, (long)editor);
1106     pcs = 0; /* ignore */
1107     return TRUE;
1108   }
1109   case EM_EMPTYUNDOBUFFER:
1110     ME_EmptyUndoStack(editor);
1111     return 0;
1112   case EM_GETSEL:
1113   {
1114     /* Note: wParam/lParam can be NULL */
1115     UINT from, to;
1116     PUINT pfrom = wParam ? (PUINT)wParam : &from;
1117     PUINT pto = lParam ? (PUINT)lParam : &to;
1118     ME_GetSelection(editor, pfrom, pto);
1119     if ((*pfrom|*pto) & 0xFFFF0000)
1120       return -1;
1121     return MAKELONG(*pfrom,*pto);
1122   }
1123   case EM_EXGETSEL:
1124   {
1125     CHARRANGE *pRange = (CHARRANGE *)lParam;
1126     ME_GetSelection(editor, (int *)&pRange->cpMin, (int *)&pRange->cpMax);
1127     TRACE("EM_EXGETSEL = (%ld,%ld)\n", pRange->cpMin, pRange->cpMax);
1128     return 0;
1129   }
1130   case EM_CANUNDO:
1131     return editor->pUndoStack != NULL;
1132   case EM_CANREDO:
1133     return editor->pRedoStack != NULL;
1134   case EM_UNDO:
1135     ME_Undo(editor);
1136     return 0;
1137   case EM_REDO:
1138     ME_Redo(editor);
1139     return 0;
1140   case EM_SETSEL:
1141   {
1142     ME_SetSelection(editor, wParam, lParam);
1143     ME_Repaint(editor);
1144     ME_SendSelChange(editor);
1145     return 0;
1146   }
1147   case EM_EXSETSEL:
1148   {
1149     CHARRANGE *pRange = (CHARRANGE *)lParam;
1150     TRACE("EM_EXSETSEL (%ld,%ld)\n", pRange->cpMin, pRange->cpMax);
1151     ME_SetSelection(editor, pRange->cpMin, pRange->cpMax);
1152     /* FIXME optimize */
1153     ME_Repaint(editor);
1154     ME_SendSelChange(editor);
1155     return 0;
1156   }
1157   case EM_SETTEXTEX:
1158   {
1159     LPWSTR wszText = (LPWSTR)lParam;
1160     SETTEXTEX *pStruct = (SETTEXTEX *)wParam;
1161     size_t len = lstrlenW(wszText);
1162     int from, to;
1163     ME_Style *style;
1164     TRACE("EM_SETTEXEX - %s, flags %d, cp %d\n", debugstr_w(wszText), (int)pStruct->flags, pStruct->codepage);
1165     if (pStruct->codepage != 1200) {
1166       FIXME("EM_SETTEXTEX only supports unicode right now!\n");
1167       return 0;
1168     }
1169     /* FIXME: this should support RTF strings too, according to MSDN */
1170     if (pStruct->flags & ST_SELECTION) {
1171       ME_GetSelection(editor, &from, &to);
1172       style = ME_GetSelectionInsertStyle(editor);
1173       ME_InternalDeleteText(editor, from, to - from);
1174       ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1175       ME_ReleaseStyle(style);
1176     }
1177     else {
1178       ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1179       ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
1180       len = 1;
1181     }
1182     ME_CommitUndo(editor);
1183     if (!(pStruct->flags & ST_KEEPUNDO))
1184       ME_EmptyUndoStack(editor);
1185     ME_UpdateRepaint(editor);
1186     return len;
1187   }
1188   case EM_SETBKGNDCOLOR:
1189   {
1190     LRESULT lColor = ME_GetBackColor(editor);
1191     if (wParam)
1192       editor->rgbBackColor = -1;
1193     else
1194       editor->rgbBackColor = lParam;
1195     InvalidateRect(hWnd, NULL, TRUE);
1196     UpdateWindow(hWnd);
1197     return lColor;
1198   }
1199   case EM_GETMODIFY:
1200     return editor->nModifyStep == 0 ? 0 : 1;
1201   case EM_SETMODIFY:
1202   {
1203     if (wParam)
1204       editor->nModifyStep = 0x80000000;
1205     else
1206       editor->nModifyStep = 0;
1207
1208     return 0;
1209   }
1210   case EM_SETREADONLY:
1211   {
1212     long nStyle = GetWindowLongW(hWnd, GWL_STYLE);
1213     if (wParam)
1214       nStyle |= ES_READONLY;
1215     else
1216       nStyle &= ~ES_READONLY;
1217     SetWindowLongW(hWnd, GWL_STYLE, nStyle);
1218     ME_Repaint(editor);
1219     return 0;
1220   }
1221   case EM_SETEVENTMASK:
1222     editor->nEventMask = lParam;
1223     return 0;
1224   case EM_GETEVENTMASK:
1225     return editor->nEventMask;
1226   case EM_SETCHARFORMAT:
1227   {
1228     CHARFORMAT2W buf, *p;
1229     BOOL bRepaint = TRUE;
1230     p = ME_ToCF2W(&buf, (CHARFORMAT2W *)lParam);
1231     if (!wParam)
1232       ME_SetDefaultCharFormat(editor, p);
1233     else if (wParam == (SCF_WORD | SCF_SELECTION))
1234       FIXME("EM_SETCHARFORMAT: word selection not supported\n");
1235     else if (wParam == SCF_ALL)
1236       ME_SetCharFormat(editor, 0, ME_GetTextLength(editor), p);
1237     else {
1238       int from, to;
1239       ME_GetSelection(editor, &from, &to);
1240       bRepaint = (from != to);
1241       ME_SetSelectionCharFormat(editor, p);
1242     }
1243     ME_CommitUndo(editor);
1244     if (bRepaint)
1245       ME_UpdateRepaint(editor);
1246     return 0;
1247   }
1248   case EM_GETCHARFORMAT:
1249   {
1250     CHARFORMAT2W tmp, *dst = (CHARFORMAT2W *)lParam;
1251     if (dst->cbSize != sizeof(CHARFORMATA) &&
1252         dst->cbSize != sizeof(CHARFORMATW) &&
1253         dst->cbSize != sizeof(CHARFORMAT2A) &&
1254         dst->cbSize != sizeof(CHARFORMAT2W))
1255       return 0;
1256     tmp.cbSize = sizeof(tmp);
1257     if (!wParam)
1258       ME_GetDefaultCharFormat(editor, &tmp);
1259     else
1260       ME_GetSelectionCharFormat(editor, &tmp);
1261     ME_CopyToCFAny(dst, &tmp);
1262     return tmp.dwMask;
1263   }
1264   case EM_SETPARAFORMAT:
1265     ME_SetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1266     ME_UpdateRepaint(editor);
1267     ME_CommitUndo(editor);
1268     return 0;
1269   case EM_GETPARAFORMAT:
1270     ME_GetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1271     return 0;
1272   case EM_LINESCROLL:
1273   {
1274     int nPos = editor->nScrollPosY, nEnd= editor->nTotalLength - editor->sizeWindow.cy;
1275     nPos += 8 * lParam; /* FIXME follow the original */
1276     if (nPos>=nEnd)
1277       nPos = nEnd;
1278     if (nPos<0)
1279       nPos = 0;
1280     if (nPos != editor->nScrollPosY) {
1281       ScrollWindow(hWnd, 0, editor->nScrollPosY-nPos, NULL, NULL);
1282       editor->nScrollPosY = nPos;
1283       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1284       UpdateWindow(hWnd);
1285     }
1286     return TRUE; /* Should return false if a single line richedit control */
1287   }
1288   case WM_CLEAR:
1289   {
1290     int from, to;
1291     ME_GetSelection(editor, &from, &to);
1292     ME_InternalDeleteText(editor, from, to-from);
1293     ME_CommitUndo(editor);
1294     ME_UpdateRepaint(editor);
1295     return 0;
1296   }
1297   case EM_REPLACESEL:
1298   {
1299     int from, to;
1300     ME_Style *style;
1301     LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
1302     size_t len = lstrlenW(wszText);
1303     TRACE("EM_REPLACESEL - %s\n", debugstr_w(wszText));
1304
1305     ME_GetSelection(editor, &from, &to);
1306     style = ME_GetSelectionInsertStyle(editor);
1307     ME_InternalDeleteText(editor, from, to-from);
1308     ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1309     ME_ReleaseStyle(style);
1310     ME_EndToUnicode(hWnd, wszText);
1311     /* drop temporary style if line end */
1312     /* FIXME question: does abc\n mean: put abc, clear temp style, put \n? (would require a change) */
1313     if (len>0 && wszText[len-1] == '\n')
1314       ME_ClearTempStyle(editor);
1315
1316     ME_CommitUndo(editor);
1317     if (!wParam)
1318       ME_EmptyUndoStack(editor);
1319     ME_UpdateRepaint(editor);
1320     return 0;
1321   }
1322   case WM_SETTEXT:
1323   {
1324     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1325     if (lParam)
1326     {
1327       LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
1328       TRACE("WM_SETTEXT lParam==%lx\n",lParam);
1329       TRACE("WM_SETTEXT - %s\n", debugstr_w(wszText)); /* debugstr_w() */
1330       if (lstrlenW(wszText) > 0)
1331       {
1332         /* uses default style! */
1333         ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
1334       }
1335       ME_EndToUnicode(hWnd, wszText);
1336     }
1337     else
1338       TRACE("WM_SETTEXT - NULL\n");
1339     ME_CommitUndo(editor);
1340     ME_EmptyUndoStack(editor);
1341     ME_UpdateRepaint(editor);
1342     return 0;
1343   }
1344   case EM_CANPASTE:
1345   {
1346     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1347     if (IsClipboardFormatAvailable(nRTFFormat))
1348       return TRUE;
1349     if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1350       return TRUE;
1351     return FALSE;
1352   }
1353   case WM_PASTE:
1354   {
1355     DWORD dwFormat = 0;
1356     EDITSTREAM es;
1357     ME_GlobalDestStruct gds;
1358     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1359     UINT cf = 0;
1360
1361     if (IsClipboardFormatAvailable(nRTFFormat))
1362       cf = nRTFFormat, dwFormat = SF_RTF;
1363     else if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1364       cf = CF_UNICODETEXT, dwFormat = SF_TEXT|SF_UNICODE;
1365     else
1366       return 0;
1367
1368     if (!OpenClipboard(hWnd))
1369       return 0;
1370     gds.hData = GetClipboardData(cf);
1371     gds.nLength = 0;
1372     es.dwCookie = (DWORD)&gds;
1373     es.pfnCallback = dwFormat == SF_RTF ? ME_ReadFromHGLOBALRTF : ME_ReadFromHGLOBALUnicode;
1374     SendMessageW(hWnd, EM_STREAMIN, dwFormat|SFF_SELECTION, (LPARAM)&es);
1375
1376     CloseClipboard();
1377     return 0;
1378   }
1379   case WM_CUT:
1380   case WM_COPY:
1381   {
1382     int from, to, pars;
1383     WCHAR *data;
1384     HANDLE hData;
1385     EDITSTREAM es;
1386     ME_GlobalDestStruct gds;
1387
1388     if (!OpenClipboard(hWnd))
1389       return 0;
1390
1391     EmptyClipboard();
1392     ME_GetSelection(editor, &from, &to);
1393     pars = ME_CountParagraphsBetween(editor, from, to);
1394     hData = GlobalAlloc(GMEM_MOVEABLE, sizeof(WCHAR)*(to-from+pars+1));
1395     data = (WCHAR *)GlobalLock(hData);
1396     ME_GetTextW(editor, data, from, to-from, TRUE);
1397     GlobalUnlock(hData);
1398
1399     gds.hData = GlobalAlloc(GMEM_MOVEABLE, 0);
1400     gds.nLength = 0;
1401     es.dwCookie = (DWORD)&gds;
1402     es.pfnCallback = ME_AppendToHGLOBAL;
1403     SendMessageW(hWnd, EM_STREAMOUT, SFF_SELECTION|SF_RTF, (LPARAM)&es);
1404     GlobalReAlloc(gds.hData, gds.nLength+1, 0);
1405
1406     SetClipboardData(CF_UNICODETEXT, hData);
1407     SetClipboardData(RegisterClipboardFormatA("Rich Text Format"), gds.hData);
1408
1409     CloseClipboard();
1410     if (msg == WM_CUT)
1411     {
1412       ME_InternalDeleteText(editor, from, to-from);
1413       ME_CommitUndo(editor);
1414       ME_UpdateRepaint(editor);
1415     }
1416     return 0;
1417   }
1418   case WM_GETTEXTLENGTH:
1419     return ME_GetTextLength(editor);
1420   case EM_GETTEXTLENGTHEX:
1421     return ME_GetTextLengthEx(editor, (GETTEXTLENGTHEX *)wParam);
1422   case WM_GETTEXT:
1423   {
1424     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1425     tr.chrg.cpMin = 0;
1426     tr.chrg.cpMax = wParam-1;
1427     tr.lpstrText = (WCHAR *)lParam;
1428     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1429   }
1430   case EM_GETTEXTEX:
1431   {
1432     GETTEXTEX *ex = (GETTEXTEX*)wParam;
1433
1434     if (ex->flags != 0)
1435         FIXME("Unhandled EM_GETTEXTEX flags 0x%lx\n",ex->flags);
1436
1437     if (IsWindowUnicode(hWnd))
1438       return ME_GetTextW(editor, (LPWSTR)lParam, 0, ex->cb, FALSE);
1439     else
1440     {
1441         LPWSTR buffer = HeapAlloc(GetProcessHeap(),0,ex->cb*sizeof(WCHAR));
1442         DWORD buflen = ex->cb;
1443         LRESULT rc;
1444         DWORD flags = 0;
1445
1446         buflen = ME_GetTextW(editor, buffer, 0, buflen, FALSE);
1447         rc = WideCharToMultiByte(ex->codepage, flags, buffer, buflen, (LPSTR)lParam, ex->cb, ex->lpDefaultChar, ex->lpUsedDefaultChar);
1448
1449         HeapFree(GetProcessHeap(),0,buffer);
1450         return rc;
1451     }
1452   }
1453   case EM_GETSELTEXT:
1454   {
1455     int from, to;
1456     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1457     ME_GetSelection(editor, &from, &to);
1458     tr.chrg.cpMin = from;
1459     tr.chrg.cpMax = to;
1460     tr.lpstrText = (WCHAR *)lParam;
1461     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1462   }
1463   case EM_GETTEXTRANGE:
1464   {
1465     TEXTRANGEW *rng = (TEXTRANGEW *)lParam;
1466     if (IsWindowUnicode(hWnd))
1467       return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, FALSE);
1468     else
1469     {
1470       int nLen = rng->chrg.cpMax-rng->chrg.cpMin;
1471       WCHAR *p = ALLOC_N_OBJ(WCHAR, nLen+1);
1472       int nChars = ME_GetTextW(editor, p, rng->chrg.cpMin, nLen, FALSE);
1473       /* FIXME this is a potential security hole (buffer overrun)
1474          if you know more about wchar->mbyte conversion please explain
1475       */
1476       WideCharToMultiByte(CP_ACP, 0, p, nChars+1, (char *)rng->lpstrText, nLen+1, NULL, NULL);
1477       FREE_OBJ(p);
1478       return nChars;
1479     }
1480     return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, FALSE);
1481   }
1482   case EM_GETLINECOUNT:
1483   {
1484     ME_DisplayItem *item = editor->pBuffer->pFirst->next;
1485     int nRows = 0;
1486
1487     while (item != editor->pBuffer->pLast)
1488     {
1489       assert(item->type == diParagraph);
1490       nRows += item->member.para.nRows;
1491       item = item->member.para.next_para;
1492     }
1493     TRACE("EM_GETLINECOUNT: nRows==%d\n", nRows);
1494     return max(1, nRows);
1495   }
1496   case EM_LINEFROMCHAR:
1497   {
1498     if (wParam == -1)
1499       return ME_RowNumberFromCharOfs(editor, ME_GetCursorOfs(editor, 1));
1500     else
1501       return ME_RowNumberFromCharOfs(editor, wParam);
1502   }
1503   case EM_EXLINEFROMCHAR:
1504   {
1505     return ME_RowNumberFromCharOfs(editor, lParam);
1506   }
1507   case EM_LINEINDEX:
1508   {
1509     ME_DisplayItem *item, *para;
1510     int nCharOfs;
1511
1512     if (wParam == -1)
1513       item = ME_FindItemBack(editor->pCursors[0].pRun, diStartRow);
1514     else
1515       item = ME_FindRowWithNumber(editor, wParam);
1516     if (!item)
1517       return -1;
1518     para = ME_GetParagraph(item);
1519     item = ME_FindItemFwd(item, diRun);
1520     nCharOfs = para->member.para.nCharOfs + item->member.run.nCharOfs;
1521     TRACE("EM_LINEINDEX: nCharOfs==%d\n", nCharOfs);
1522     return nCharOfs;
1523   }
1524   case EM_LINELENGTH:
1525   {
1526     ME_DisplayItem *item, *item_end;
1527     int nChars = 0;
1528
1529     if (wParam > ME_GetTextLength(editor))
1530       return 0;
1531     if (wParam == -1)
1532     {
1533       FIXME("EM_LINELENGTH: returning number of unselected characters on lines with selection unsupported.\n");
1534       return 0;
1535     }
1536     item = ME_FindItemAtOffset(editor, diRun, wParam, NULL);
1537     item = ME_RowStart(item);
1538     item_end = ME_RowEnd(item);
1539     if (!item_end)
1540     {
1541       /* Empty buffer, no runs */
1542       nChars = 0;
1543     }
1544     else
1545     {
1546       nChars = ME_CharOfsFromRunOfs(editor, item_end, ME_StrLen(item_end->member.run.strText));
1547       nChars -= ME_CharOfsFromRunOfs(editor, item, 0);
1548     }
1549     TRACE("EM_LINELENGTH(%d)==%d\n",wParam, nChars);
1550     return nChars;
1551   }
1552   case EM_FINDTEXT:
1553   {
1554     FINDTEXTA *ft = (FINDTEXTA *)lParam;
1555     int nChars = MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, NULL, 0);
1556     WCHAR *tmp;
1557
1558     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
1559       MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, tmp, nChars);
1560     return ME_FindText(editor, wParam, &ft->chrg, tmp, NULL);
1561   }
1562   case EM_FINDTEXTEX:
1563   {
1564     FINDTEXTEXA *ex = (FINDTEXTEXA *)lParam;
1565     int nChars = MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, NULL, 0);
1566     WCHAR *tmp;
1567
1568     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
1569       MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, tmp, nChars);
1570     return ME_FindText(editor, wParam, &ex->chrg, tmp, &ex->chrgText);
1571   }
1572   case EM_FINDTEXTW:
1573   {
1574     FINDTEXTW *ft = (FINDTEXTW *)lParam;
1575     return ME_FindText(editor, wParam, &ft->chrg, ft->lpstrText, NULL);
1576   }
1577   case EM_FINDTEXTEXW:
1578   {
1579     FINDTEXTEXW *ex = (FINDTEXTEXW *)lParam;
1580     return ME_FindText(editor, wParam, &ex->chrg, ex->lpstrText, &ex->chrgText);
1581   }
1582   case EM_GETZOOM:
1583     if (!wParam || !lParam)
1584       return FALSE;
1585     *(int *)wParam = editor->nZoomNumerator;
1586     *(int *)lParam = editor->nZoomDenominator;
1587     return TRUE;
1588   case EM_SETZOOM:
1589     return ME_SetZoom(editor, wParam, lParam);
1590   case WM_CREATE:
1591     ME_CommitUndo(editor);
1592     ME_WrapMarkedParagraphs(editor);
1593     ME_MoveCaret(editor);
1594     return 0;
1595   case WM_DESTROY:
1596     ME_DestroyEditor(editor);
1597     SetWindowLongW(hWnd, 0, 0);
1598     return 0;
1599   case WM_LBUTTONDOWN:
1600     SetFocus(hWnd);
1601     ME_LButtonDown(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1602     SetCapture(hWnd);
1603     break;
1604   case WM_MOUSEMOVE:
1605     if (GetCapture() == hWnd)
1606       ME_MouseMove(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1607     break;
1608   case WM_LBUTTONUP:
1609     if (GetCapture() == hWnd)
1610       ReleaseCapture();
1611     break;
1612   case WM_PAINT:
1613     hDC = BeginPaint(hWnd, &ps);
1614     ME_PaintContent(editor, hDC, FALSE, &ps.rcPaint);
1615     EndPaint(hWnd, &ps);
1616     break;
1617   case WM_SETFOCUS:
1618     ME_ShowCaret(editor);
1619     ME_SendOldNotify(editor, EN_SETFOCUS);
1620     return 0;
1621   case WM_KILLFOCUS:
1622     ME_HideCaret(editor);
1623     ME_SendOldNotify(editor, EN_KILLFOCUS);
1624     return 0;
1625   case WM_ERASEBKGND:
1626   {
1627     HDC hDC = (HDC)wParam;
1628     RECT rc;
1629     COLORREF rgbBG = ME_GetBackColor(editor);
1630     if (GetUpdateRect(hWnd,&rc,TRUE))
1631     {
1632       HBRUSH hbr = CreateSolidBrush(rgbBG);
1633       FillRect(hDC, &rc, hbr);
1634       DeleteObject(hbr);
1635     }
1636     return 1;
1637   }
1638   case WM_COMMAND:
1639     TRACE("editor wnd command = %d\n", LOWORD(wParam));
1640     return 0;
1641   case WM_KEYDOWN:
1642     if (ME_ArrowKey(editor, LOWORD(wParam), GetKeyState(VK_CONTROL)<0)) {
1643       ME_CommitUndo(editor);
1644       ME_EnsureVisible(editor, editor->pCursors[0].pRun);
1645       HideCaret(hWnd);
1646       ME_MoveCaret(editor);
1647       ShowCaret(hWnd);
1648       return 0;
1649     }
1650     if (GetKeyState(VK_CONTROL)<0)
1651     {
1652       if (LOWORD(wParam)=='W')
1653       {
1654         CHARFORMAT2W chf;
1655         char buf[2048];
1656         ME_GetSelectionCharFormat(editor, &chf);
1657         ME_DumpStyleToBuf(&chf, buf);
1658         MessageBoxA(NULL, buf, "Style dump", MB_OK);
1659       }
1660       if (LOWORD(wParam)=='Q')
1661       {
1662         ME_CheckCharOffsets(editor);
1663       }
1664     }
1665     goto do_default;
1666   case WM_CHAR:
1667   {
1668     WCHAR wstr;
1669     if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY) {
1670       MessageBeep(MB_ICONERROR);
1671       return 0; /* FIXME really 0 ? */
1672     }
1673     wstr = LOWORD(wParam);
1674     if (((unsigned)wstr)>=' ' || wstr=='\r' || wstr=='\t') {
1675       /* FIXME maybe it would make sense to call EM_REPLACESEL instead ? */
1676       ME_Style *style = ME_GetInsertStyle(editor, 0);
1677       ME_SaveTempStyle(editor);
1678       ME_InsertTextFromCursor(editor, 0, &wstr, 1, style);
1679       ME_ReleaseStyle(style);
1680       ME_CommitUndo(editor);
1681       ME_UpdateRepaint(editor);
1682     }
1683     return 0;
1684   }
1685   case WM_VSCROLL:
1686   {
1687     int nPos = editor->nScrollPosY;
1688     si.cbSize = sizeof(SCROLLINFO);
1689     si.fMask = SIF_PAGE|SIF_POS|SIF_RANGE|SIF_TRACKPOS;
1690     GetScrollInfo(hWnd, SB_VERT, &si);
1691     switch(LOWORD(wParam)) {
1692     case SB_LINEUP:
1693       nPos -= 24; /* FIXME follow the original */
1694       if (nPos<0) nPos = 0;
1695       break;
1696     case SB_LINEDOWN:
1697     {
1698       int nEnd = editor->nTotalLength - editor->sizeWindow.cy;
1699       nPos += 24; /* FIXME follow the original */
1700       if (nPos>=nEnd) nPos = nEnd;
1701       break;
1702     }
1703     case SB_PAGEUP:
1704       nPos -= editor->sizeWindow.cy;
1705       if (nPos<0) nPos = 0;
1706       break;
1707     case SB_PAGEDOWN:
1708       nPos += editor->sizeWindow.cy;
1709       if (nPos>=editor->nTotalLength) nPos = editor->nTotalLength-1;
1710       break;
1711     case SB_THUMBTRACK:
1712     case SB_THUMBPOSITION:
1713       nPos = si.nTrackPos;
1714       break;
1715     }
1716     if (nPos != editor->nScrollPosY) {
1717       ScrollWindow(hWnd, 0, editor->nScrollPosY-nPos, NULL, NULL);
1718       editor->nScrollPosY = nPos;
1719       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1720       UpdateWindow(hWnd);
1721     }
1722     break;
1723   }
1724   case WM_MOUSEWHEEL:
1725   {
1726     int gcWheelDelta = 0, nPos = editor->nScrollPosY, nEnd = editor->nTotalLength - editor->sizeWindow.cy;
1727     UINT pulScrollLines;
1728     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
1729     gcWheelDelta -= GET_WHEEL_DELTA_WPARAM(wParam);
1730     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
1731       nPos += pulScrollLines * (gcWheelDelta / WHEEL_DELTA) * 8; /* FIXME follow the original */
1732     if (nPos>=nEnd)
1733       nPos = nEnd;
1734     if (nPos<0)
1735       nPos = 0;
1736     if (nPos != editor->nScrollPosY) {
1737       ScrollWindow(hWnd, 0, editor->nScrollPosY-nPos, NULL, NULL);
1738       editor->nScrollPosY = nPos;
1739       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1740       UpdateWindow(hWnd);
1741     }
1742     break;
1743   }
1744   case WM_SIZE:
1745   {
1746     ME_RewrapRepaint(editor);
1747     return DefWindowProcW(hWnd, msg, wParam, lParam);
1748   }
1749   case EM_GETOLEINTERFACE:
1750   {
1751     LPVOID *ppvObj = (LPVOID*) lParam;
1752     FIXME("EM_GETOLEINTERFACE %p: stub\n", ppvObj);
1753     return CreateIRichEditOle(ppvObj);
1754   }
1755   default:
1756   do_default:
1757     return DefWindowProcW(hWnd, msg, wParam, lParam);
1758   }
1759   return 0L;
1760 }
1761
1762
1763 /******************************************************************
1764  *        RichEdit10ANSIWndProc (RICHED20.9)
1765  */
1766 LRESULT WINAPI RichEdit10ANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
1767 {
1768   LRESULT result;
1769
1770   /* FIXME: this is NOT the same as 2.0 version */
1771   result = RichEditANSIWndProc(hWnd, msg, wParam, lParam);
1772   if (msg == WM_NCCREATE)
1773   {
1774     ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
1775
1776     editor->bEmulateVersion10 = TRUE;
1777     editor->pBuffer->pLast->member.para.nCharOfs = 2;
1778   }
1779   return result;
1780 }
1781
1782 void ME_SendOldNotify(ME_TextEditor *editor, int nCode)
1783 {
1784   HWND hWnd = editor->hWnd;
1785   SendMessageA(GetParent(hWnd), WM_COMMAND, (nCode<<16)|GetWindowLongW(hWnd, GWLP_ID), (LPARAM)hWnd);
1786 }
1787
1788 int ME_CountParagraphsBetween(ME_TextEditor *editor, int from, int to)
1789 {
1790   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
1791   int i = 0;
1792
1793   while(item && item->member.para.next_para->member.para.nCharOfs <= from)
1794     item = item->member.para.next_para;
1795   if (!item)
1796     return 0;
1797   while(item && item->member.para.next_para->member.para.nCharOfs <= to) {
1798     item = item->member.para.next_para;
1799     i++;
1800   }
1801   return i;
1802 }
1803
1804
1805 int ME_GetTextW(ME_TextEditor *editor, WCHAR *buffer, int nStart, int nChars, int bCRLF)
1806 {
1807   ME_DisplayItem *item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
1808   int nWritten = 0;
1809
1810   if (!item) {
1811     *buffer = L'\0';
1812     return 0;
1813   }
1814   assert(item);
1815
1816   if (nStart)
1817   {
1818     int nLen = ME_StrLen(item->member.run.strText) - nStart;
1819     if (nLen > nChars)
1820       nLen = nChars;
1821     CopyMemory(buffer, item->member.run.strText->szData + nStart, sizeof(WCHAR)*nLen);
1822     nChars -= nLen;
1823     nWritten += nLen;
1824     if (!nChars)
1825       return nWritten;
1826     buffer += nLen;
1827     nStart = 0;
1828     item = ME_FindItemFwd(item, diRun);
1829   }
1830
1831   while(nChars && item)
1832   {
1833     int nLen = ME_StrLen(item->member.run.strText);
1834     if (nLen > nChars)
1835       nLen = nChars;
1836
1837     if (item->member.run.nFlags & MERF_ENDPARA)
1838     {
1839       if (bCRLF) {
1840         *buffer++ = '\r';
1841         nWritten++;
1842       }
1843       *buffer = '\n';
1844       assert(nLen == 1);
1845     }
1846     else
1847       CopyMemory(buffer, item->member.run.strText->szData, sizeof(WCHAR)*nLen);
1848     nChars -= nLen;
1849     nWritten += nLen;
1850     buffer += nLen;
1851
1852     if (!nChars)
1853     {
1854       *buffer = L'\0';
1855       return nWritten;
1856     }
1857     item = ME_FindItemFwd(item, diRun);
1858   }
1859   *buffer = L'\0';
1860   return nWritten;
1861 }
1862
1863 void ME_RegisterEditorClass(HINSTANCE hInstance)
1864 {
1865   BOOL bResult;
1866   WNDCLASSW wcW;
1867   WNDCLASSA wcA;
1868
1869   wcW.style = CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
1870   wcW.lpfnWndProc = RichEditANSIWndProc;
1871   wcW.cbClsExtra = 0;
1872   wcW.cbWndExtra = 4;
1873   wcW.hInstance = NULL; /* hInstance would register DLL-local class */
1874   wcW.hIcon = NULL;
1875   wcW.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
1876   wcW.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
1877   wcW.lpszMenuName = NULL;
1878   wcW.lpszClassName = wszClassName;
1879   bResult = RegisterClassW(&wcW);
1880   assert(bResult);
1881   wcW.lpszClassName = wszClassName50;
1882   bResult = RegisterClassW(&wcW);
1883   assert(bResult);
1884
1885   wcA.style = CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
1886   wcA.lpfnWndProc = RichEditANSIWndProc;
1887   wcA.cbClsExtra = 0;
1888   wcA.cbWndExtra = 4;
1889   wcA.hInstance = NULL; /* hInstance would register DLL-local class */
1890   wcA.hIcon = NULL;
1891   wcA.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
1892   wcA.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
1893   wcA.lpszMenuName = NULL;
1894   wcA.lpszClassName = "RichEdit20A";
1895   bResult = RegisterClassA(&wcA);
1896   assert(bResult);
1897   wcA.lpszClassName = "RichEdit50A";
1898   bResult = RegisterClassA(&wcA);
1899   assert(bResult);
1900 }
1901 /******************************************************************
1902  *        CreateTextServices (RICHED20.4)
1903  *
1904  * FIXME should be ITextHost instead of void*
1905  */
1906 HRESULT WINAPI CreateTextServices(IUnknown *punkOuter, void *pITextHost,
1907     IUnknown **ppUnk)
1908 {
1909   FIXME("stub\n");
1910   /* FIXME should support aggregation */
1911   if (punkOuter)
1912     return CLASS_E_NOAGGREGATION;
1913
1914   return E_FAIL; /* E_NOTIMPL isn't allowed by MSDN */
1915 }
1916
1917 /******************************************************************
1918  *        REExtendedRegisterClass (RICHED20.8)
1919  *
1920  * FIXME undocumented
1921  */
1922 void WINAPI REExtendedRegisterClass(void)
1923 {
1924   FIXME("stub\n");
1925 }