dlls/riched20/editor.c

   1 /*
   2  * RichEdit - functions dealing with editor object
   3  *
   4  * Copyright 2004 by Krzysztof Foltman
   5  * Copyright 2005 by Cihan Altinay
   6  * Copyright 2005 by Phil Krylov
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 /*
  24   API implementation status:
  25
  26   Messages (ANSI versions not done yet)
  27   - EM_AUTOURLDETECT 2.0
  28   + EM_CANPASTE
  29   + EM_CANREDO 2.0
  30   + EM_CANUNDO
  31   + EM_CHARFROMPOS
  32   - EM_DISPLAYBAND
  33   + EM_EMPTYUNDOBUFFER
  34   + EM_EXGETSEL
  35   - EM_EXLIMITTEXT
  36   + EM_EXLINEFROMCHAR
  37   + EM_EXSETSEL
  38   + EM_FINDTEXT (only FR_DOWN flag implemented)
  39   + EM_FINDTEXTEX (only FR_DOWN flag implemented)
  40   - EM_FINDWORDBREAK
  41   - EM_FMTLINES
  42   - EM_FORMATRANGE
  43   - EM_GETAUTOURLDETECT 2.0
  44   - EM_GETBIDIOPTIONS 3.0
  45   - EM_GETCHARFORMAT (partly done)
  46   - EM_GETEDITSTYLE
  47   + EM_GETEVENTMASK
  48   + EM_GETFIRSTVISIBLELINE (can be optimized if needed)
  49   - EM_GETIMECOLOR 1.0asian
  50   - EM_GETIMECOMPMODE 2.0
  51   - EM_GETIMEOPTIONS 1.0asian
  52   - EM_GETIMESTATUS
  53   - EM_GETLANGOPTIONS 2.0
  54   - EM_GETLIMITTEXT
  55   - EM_GETLINE
  56   + EM_GETLINECOUNT   returns number of rows, not of paragraphs
  57   + EM_GETMODIFY
  58   - EM_GETOLEINTERFACE
  59   - EM_GETOPTIONS
  60   + EM_GETPARAFORMAT
  61   - EM_GETPASSWORDCHAR 2.0
  62   - EM_GETPUNCTUATION 1.0asian
  63   + EM_GETRECT
  64   - EM_GETREDONAME 2.0
  65   + EM_GETSEL
  66   + EM_GETSELTEXT (ANSI&Unicode)
  67   - EM_GETSCROLLPOS 3.0
  68 ! - EM_GETTHUMB
  69   - EM_GETTEXTEX 2.0
  70   + EM_GETTEXTLENGTHEX (GTL_PRECISE unimplemented)
  71   - EM_GETTEXTMODE 2.0
  72 ? + EM_GETTEXTRANGE (ANSI&Unicode)
  73   - EM_GETTYPOGRAPHYOPTIONS 3.0
  74   - EM_GETUNDONAME
  75   + EM_GETWORDBREAKPROC
  76   - EM_GETWORDBREAKPROCEX
  77   - EM_GETWORDWRAPMODE 1.0asian
  78   + EM_GETZOOM 3.0
  79   - EM_HIDESELECTION
  80   - EM_LIMITTEXT
  81   + EM_LINEFROMCHAR
  82   + EM_LINEINDEX
  83   + EM_LINELENGTH
  84   + EM_LINESCROLL
  85   - EM_PASTESPECIAL
  86   + EM_POSFROMCHAR
  87   + EM_REDO 2.0
  88   + EM_REQUESTRESIZE
  89   + EM_REPLACESEL (proper style?) ANSI&Unicode
  90   - EM_SCROLL
  91   - EM_SCROLLCARET
  92   - EM_SELECTIONTYPE
  93   - EM_SETBIDIOPTIONS 3.0
  94   + EM_SETBKGNDCOLOR
  95   - EM_SETCHARFORMAT (partly done, no ANSI)
  96   - EM_SETEDITSTYLE
  97   + EM_SETEVENTMASK (few notifications supported)
  98   - EM_SETFONTSIZE
  99   - EM_SETIMECOLOR 1.0asian
 100   - EM_SETIMEOPTIONS 1.0asian
 101   - EM_SETLANGOPTIONS 2.0
 102   - EM_SETLIMITTEXT
 103   + EM_SETMODIFY (not sure if implementation is correct)
 104   - EM_SETOLECALLBACK
 105   - EM_SETOPTIONS
 106   - EM_SETPALETTE 2.0
 107   + EM_SETPARAFORMAT
 108   - EM_SETPASSWORDCHAR 2.0
 109   - EM_SETPUNCTUATION 1.0asian
 110   + EM_SETREADONLY no beep on modification attempt
 111   + EM_SETRECT
 112   + EM_SETRECTNP (EM_SETRECT without repainting)
 113   + EM_SETSEL
 114   - EM_SETSCROLLPOS 3.0
 115   - EM_SETTABSTOPS 3.0
 116   - EM_SETTARGETDEVICE
 117   + EM_SETTEXTEX 3.0 (unicode only, no rich text insertion handling, proper style?)
 118   - EM_SETTEXTMODE 2.0
 119   - EM_SETTYPOGRAPHYOPTIONS 3.0
 120   - EM_SETUNDOLIMIT 2.0
 121   + EM_SETWORDBREAKPROC (used only for word movement at the moment)
 122   - EM_SETWORDBREAKPROCEX
 123   - EM_SETWORDWRAPMODE 1.0asian
 124   + EM_SETZOOM 3.0
 125   - EM_SHOWSCROLLBAR 2.0
 126   - EM_STOPGROUPTYPING 2.0
 127   + EM_STREAMIN
 128   + EM_STREAMOUT
 129   + EM_UNDO
 130   + WM_CHAR
 131   + WM_CLEAR
 132   + WM_COPY
 133   + WM_CUT
 134   + WM_GETDLGCODE (the current implementation is incomplete)
 135   + WM_GETTEXT (ANSI&Unicode)
 136   + WM_GETTEXTLENGTH (ANSI version sucks)
 137   + WM_PASTE
 138   - WM_SETFONT
 139   + WM_SETTEXT (resets undo stack !) (proper style?) ANSI&Unicode
 140   - WM_STYLECHANGING
 141   - WM_STYLECHANGED (things like read-only flag)
 142   - WM_UNICHAR
 143
 144   Notifications
 145
 146   * EN_CHANGE (sent from the wrong place)
 147   - EN_CORRECTTEXT
 148   - EN_DROPFILES
 149   - EN_ERRSPACE
 150   - EN_HSCROLL
 151   - EN_IMECHANGE
 152   + EN_KILLFOCUS
 153   - EN_LINK
 154   - EN_MAXTEXT
 155   - EN_MSGFILTER
 156   - EN_OLEOPFAILED
 157   - EN_PROTECTED
 158   + EN_REQUESTRESIZE
 159   - EN_SAVECLIPBOARD
 160   + EN_SELCHANGE
 161   + EN_SETFOCUS
 162   - EN_STOPNOUNDO
 163   * EN_UPDATE (sent from the wrong place)
 164   - EN_VSCROLL
 165
 166   Styles
 167
 168   - ES_AUTOHSCROLL
 169   - ES_AUTOVSCROLL
 170   - ES_CENTER
 171   - ES_DISABLENOSCROLL (scrollbar is always visible)
 172   - ES_EX_NOCALLOLEINIT
 173   - ES_LEFT
 174   - ES_MULTILINE (currently single line controls aren't supported)
 175   - ES_NOIME
 176   - ES_READONLY (I'm not sure if beeping is the proper behaviour)
 177   - ES_RIGHT
 178   - ES_SAVESEL
 179   - ES_SELFIME
 180   - ES_SUNKEN
 181   - ES_VERTICAL
 182   - ES_WANTRETURN (don't know how to do WM_GETDLGCODE part)
 183   - WS_SETFONT
 184   - WS_HSCROLL
 185   - WS_VSCROLL
 186 */
 187
 188 /*
 189  * RICHED20 TODO (incomplete):
 190  *
 191  * - messages/styles/notifications listed above
 192  * - Undo coalescing
 193  * - add remaining CHARFORMAT/PARAFORMAT fields
 194  * - right/center align should strip spaces from the beginning
 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  * - ListBox & ComboBox not implemented
 212  *
 213  * Bugs that are probably fixed, but not so easy to verify:
 214  * - EN_UPDATE/EN_CHANGE are handled very incorrectly (should be OK now)
 215  * - undo for ME_JoinParagraphs doesn't store paragraph format ? (it does)
 216  * - check/fix artificial EOL logic (bCursorAtEnd, hardly logical)
 217  * - caret shouldn't be displayed when selection isn't empty
 218  * - check refcounting in style management functions (looks perfect now, but no bugs is suspicious)
 219  * - undo for setting default format (done, might be buggy)
 220  * - styles might be not released properly (looks like they work like charm, but who knows?
 221  *
 222  */
 223
 224 #include "editor.h"
 225 #include "commdlg.h"
 226 #include "winreg.h"
 227 #define NO_SHLWAPI_STREAM
 228 #include "shlwapi.h"
 229 #include "imm.h"
 230 #include "textserv.h"
 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 BOOL ME_ListBoxRegistered = FALSE;
 239 static BOOL ME_ComboBoxRegistered = FALSE;
 240
 241 static ME_TextBuffer *ME_MakeText(void) {
 242
 243   ME_TextBuffer *buf = ALLOC_OBJ(ME_TextBuffer);
 244
 245   ME_DisplayItem *p1 = ME_MakeDI(diTextStart);
 246   ME_DisplayItem *p2 = ME_MakeDI(diTextEnd);
 247
 248   p1->prev = NULL;
 249   p1->next = p2;
 250   p2->prev = p1;
 251   p2->next = NULL;
 252   p1->member.para.next_para = p2;
 253   p2->member.para.prev_para = p1;
 254   p2->member.para.nCharOfs = 0;
 255
 256   buf->pFirst = p1;
 257   buf->pLast = p2;
 258   buf->pCharStyle = NULL;
 259
 260   return buf;
 261 }
 262
 263
 264 static LRESULT ME_StreamInText(ME_TextEditor *editor, DWORD dwFormat, ME_InStream *stream, ME_Style *style)
 265 {
 266   WCHAR wszText[STREAMIN_BUFFER_SIZE+1];
 267   WCHAR *pText;
 268
 269   TRACE("%08lx %p\n", dwFormat, stream);
 270
 271   do {
 272     long nWideChars = 0;
 273
 274     if (!stream->dwSize)
 275     {
 276       ME_StreamInFill(stream);
 277       if (stream->editstream->dwError)
 278         break;
 279       if (!stream->dwSize)
 280         break;
 281     }
 282
 283     if (!(dwFormat & SF_UNICODE))
 284     {
 285       /* FIXME? this is doomed to fail on true MBCS like UTF-8, luckily they're unlikely to be used as CP_ACP */
 286       nWideChars = MultiByteToWideChar(CP_ACP, 0, stream->buffer, stream->dwSize, wszText, STREAMIN_BUFFER_SIZE);
 287       pText = wszText;
 288     }
 289     else
 290     {
 291       nWideChars = stream->dwSize >> 1;
 292       pText = (WCHAR *)stream->buffer;
 293     }
 294
 295     ME_InsertTextFromCursor(editor, 0, pText, nWideChars, style);
 296     if (stream->dwSize == 0)
 297       break;
 298     stream->dwSize = 0;
 299   } while(1);
 300   ME_CommitUndo(editor);
 301   ME_UpdateRepaint(editor);
 302   return 0;
 303 }
 304
 305 static void ME_RTFCharAttrHook(RTF_Info *info)
 306 {
 307   CHARFORMAT2W fmt;
 308   fmt.cbSize = sizeof(fmt);
 309   fmt.dwMask = 0;
 310
 311   switch(info->rtfMinor)
 312   {
 313     case rtfPlain:
 314       /* FIXME add more flags once they're implemented */
 315       fmt.dwMask = CFM_BOLD | CFM_ITALIC | CFM_UNDERLINE | CFM_STRIKEOUT | CFM_COLOR | CFM_BACKCOLOR | CFM_SIZE | CFM_WEIGHT;
 316       fmt.dwEffects = CFE_AUTOCOLOR | CFE_AUTOBACKCOLOR;
 317       fmt.yHeight = 12*20; /* 12pt */
 318       fmt.wWeight = 400;
 319       break;
 320     case rtfBold:
 321       fmt.dwMask = CFM_BOLD;
 322       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 323       break;
 324     case rtfItalic:
 325       fmt.dwMask = CFM_ITALIC;
 326       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 327       break;
 328     case rtfUnderline:
 329       fmt.dwMask = CFM_UNDERLINE;
 330       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 331       fmt.bUnderlineType = CFU_CF1UNDERLINE;
 332       break;
 333     case rtfNoUnderline:
 334       fmt.dwMask = CFM_UNDERLINE;
 335       fmt.dwEffects = 0;
 336       break;
 337     case rtfStrikeThru:
 338       fmt.dwMask = CFM_STRIKEOUT;
 339       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 340       break;
 341     case rtfSubScript:
 342     case rtfSuperScript:
 343     case rtfSubScrShrink:
 344     case rtfSuperScrShrink:
 345     case rtfNoSuperSub:
 346       fmt.dwMask = CFM_SUBSCRIPT|CFM_SUPERSCRIPT;
 347       if (info->rtfMinor == rtfSubScrShrink) fmt.dwEffects = CFE_SUBSCRIPT;
 348       if (info->rtfMinor == rtfSuperScrShrink) fmt.dwEffects = CFE_SUPERSCRIPT;
 349       if (info->rtfMinor == rtfNoSuperSub) fmt.dwEffects = 0;
 350       break;
 351     case rtfInvisible:
 352       fmt.dwMask = CFM_HIDDEN;
 353       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 354       break;
 355     case rtfBackColor:
 356       fmt.dwMask = CFM_BACKCOLOR;
 357       fmt.dwEffects = 0;
 358       if (info->rtfParam == 0)
 359         fmt.dwEffects = CFE_AUTOBACKCOLOR;
 360       else if (info->rtfParam != rtfNoParam)
 361       {
 362         RTFColor *c = RTFGetColor(info, info->rtfParam);
 363         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 364       }
 365       break;
 366     case rtfForeColor:
 367       fmt.dwMask = CFM_COLOR;
 368       fmt.dwEffects = 0;
 369       if (info->rtfParam == 0)
 370         fmt.dwEffects = CFE_AUTOCOLOR;
 371       else if (info->rtfParam != rtfNoParam)
 372       {
 373         RTFColor *c = RTFGetColor(info, info->rtfParam);
 374         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 375       }
 376       break;
 377     case rtfFontNum:
 378       if (info->rtfParam != rtfNoParam)
 379       {
 380         RTFFont *f = RTFGetFont(info, info->rtfParam);
 381         if (f)
 382         {
 383           MultiByteToWideChar(CP_ACP, 0, f->rtfFName, -1, fmt.szFaceName, sizeof(fmt.szFaceName)/sizeof(WCHAR));
 384           fmt.szFaceName[sizeof(fmt.szFaceName)/sizeof(WCHAR)-1] = '\0';
 385           fmt.bCharSet = f->rtfFCharSet;
 386           fmt.dwMask = CFM_FACE | CFM_CHARSET;
 387         }
 388       }
 389       break;
 390     case rtfFontSize:
 391       fmt.dwMask = CFM_SIZE;
 392       if (info->rtfParam != rtfNoParam)
 393         fmt.yHeight = info->rtfParam*10;
 394       break;
 395   }
 396   if (fmt.dwMask) {
 397     ME_Style *style2;
 398     RTFFlushOutputBuffer(info);
 399     /* FIXME too slow ? how come ? */
 400     style2 = ME_ApplyStyle(info->style, &fmt);
 401     ME_ReleaseStyle(info->style);
 402     info->style = style2;
 403     info->styleChanged = TRUE;
 404   }
 405 }
 406
 407 /* FIXME this function doesn't get any information about context of the RTF tag, which is very bad,
 408    the same tags mean different things in different contexts */
 409 static void ME_RTFParAttrHook(RTF_Info *info)
 410 {
 411   PARAFORMAT2 fmt;
 412   fmt.cbSize = sizeof(fmt);
 413   fmt.dwMask = 0;
 414
 415   switch(info->rtfMinor)
 416   {
 417   case rtfParDef: /* restores default paragraph attributes */
 418     fmt.dwMask = PFM_ALIGNMENT | PFM_TABSTOPS | PFM_OFFSET | PFM_STARTINDENT;
 419     fmt.wAlignment = PFA_LEFT;
 420     fmt.cTabCount = 0;
 421     fmt.dxOffset = fmt.dxStartIndent = 0;
 422     RTFFlushOutputBuffer(info);
 423     ME_GetParagraph(info->editor->pCursors[0].pRun)->member.para.bTable = FALSE;
 424     break;
 425   case rtfInTable:
 426   {
 427     ME_DisplayItem *para;
 428
 429     RTFFlushOutputBuffer(info);
 430     para = ME_GetParagraph(info->editor->pCursors[0].pRun);
 431     assert(para->member.para.pCells);
 432     para->member.para.bTable = TRUE;
 433     return;
 434   }
 435   case rtfFirstIndent:
 436     ME_GetSelectionParaFormat(info->editor, &fmt);
 437     fmt.dwMask = PFM_STARTINDENT | PFM_OFFSET;
 438     fmt.dxStartIndent += info->rtfParam + fmt.dxOffset;
 439     fmt.dxOffset = -info->rtfParam;
 440     break;
 441   case rtfLeftIndent:
 442     ME_GetSelectionParaFormat(info->editor, &fmt);
 443     fmt.dwMask = PFM_STARTINDENT;
 444     fmt.dxStartIndent = -fmt.dxOffset + info->rtfParam;
 445     break;
 446   case rtfRightIndent:
 447     fmt.dwMask = PFM_RIGHTINDENT;
 448     fmt.dxRightIndent = info->rtfParam;
 449     break;
 450   case rtfQuadLeft:
 451   case rtfQuadJust:
 452     fmt.dwMask = PFM_ALIGNMENT;
 453     fmt.wAlignment = PFA_LEFT;
 454     break;
 455   case rtfQuadRight:
 456     fmt.dwMask = PFM_ALIGNMENT;
 457     fmt.wAlignment = PFA_RIGHT;
 458     break;
 459   case rtfQuadCenter:
 460     fmt.dwMask = PFM_ALIGNMENT;
 461     fmt.wAlignment = PFA_CENTER;
 462     break;
 463   case rtfTabPos:
 464     ME_GetSelectionParaFormat(info->editor, &fmt);
 465     if (!(fmt.dwMask & PFM_TABSTOPS))
 466     {
 467       fmt.dwMask |= PFM_TABSTOPS;
 468       fmt.cTabCount = 0;
 469     }
 470     if (fmt.cTabCount < MAX_TAB_STOPS)
 471       fmt.rgxTabs[fmt.cTabCount++] = info->rtfParam;
 472     break;
 473   }
 474   if (fmt.dwMask) {
 475     RTFFlushOutputBuffer(info);
 476     /* FIXME too slow ? how come ?*/
 477     ME_SetSelectionParaFormat(info->editor, &fmt);
 478   }
 479 }
 480
 481 static void ME_RTFTblAttrHook(RTF_Info *info)
 482 {
 483   ME_DisplayItem *para;
 484
 485   switch (info->rtfMinor)
 486   {
 487     case rtfRowDef:
 488       RTFFlushOutputBuffer(info);
 489       para = ME_GetParagraph(info->editor->pCursors[0].pRun);
 490
 491       para->member.para.pCells = ALLOC_OBJ(ME_TableCell);
 492       para->member.para.pCells->nRightBoundary = 0;
 493       para->member.para.pCells->next = NULL;
 494       para->member.para.pLastCell = para->member.para.pCells;
 495       break;
 496     case rtfCellPos:
 497       RTFFlushOutputBuffer(info);
 498       para = ME_GetParagraph(info->editor->pCursors[0].pRun);
 499
 500       if (para->member.para.pLastCell->nRightBoundary)
 501       {
 502         ME_TableCell *pCell = ALLOC_OBJ(ME_TableCell);
 503
 504         pCell->next = NULL;
 505         para->member.para.pLastCell->next = pCell;
 506         para->member.para.pLastCell = pCell;
 507       }
 508       para->member.para.pLastCell->nRightBoundary = info->rtfParam;
 509       break;
 510   }
 511 }
 512
 513 static void ME_RTFReadHook(RTF_Info *info) {
 514   switch(info->rtfClass)
 515   {
 516     case rtfGroup:
 517       switch(info->rtfMajor)
 518       {
 519         case rtfBeginGroup:
 520           if (info->stackTop < maxStack) {
 521             memcpy(&info->stack[info->stackTop].fmt, &info->style->fmt, sizeof(CHARFORMAT2W));
 522             info->stack[info->stackTop].codePage = info->codePage;
 523             info->stack[info->stackTop].unicodeLength = info->unicodeLength;
 524           }
 525           info->stackTop++;
 526           info->styleChanged = FALSE;
 527           break;
 528         case rtfEndGroup:
 529         {
 530           ME_Style *s;
 531           RTFFlushOutputBuffer(info);
 532           if (info->stackTop<=1) {
 533             info->rtfClass = rtfEOF;
 534             return;
 535           }
 536           info->stackTop--;
 537           assert(info->stackTop >= 0);
 538           if (info->styleChanged)
 539           {
 540             /* FIXME too slow ? how come ? */
 541             s = ME_ApplyStyle(info->style, &info->stack[info->stackTop].fmt);
 542             ME_ReleaseStyle(info->style);
 543             info->style = s;
 544             info->codePage = info->stack[info->stackTop].codePage;
 545             info->unicodeLength = info->stack[info->stackTop].unicodeLength;
 546           }
 547           break;
 548         }
 549       }
 550       break;
 551     case rtfControl:
 552       switch(info->rtfMajor)
 553       {
 554         case rtfCharAttr:
 555           ME_RTFCharAttrHook(info);
 556           break;
 557         case rtfParAttr:
 558           ME_RTFParAttrHook(info);
 559           break;
 560         case rtfTblAttr:
 561           ME_RTFTblAttrHook(info);
 562           break;
 563         case rtfSpecialChar:
 564           if (info->rtfMinor == rtfCell)
 565           {
 566             RTFFlushOutputBuffer(info);
 567             ME_InsertTableCellFromCursor(info->editor, 0);
 568           }
 569       }
 570       break;
 571   }
 572 }
 573
 574 void
 575 ME_StreamInFill(ME_InStream *stream)
 576 {
 577   stream->editstream->dwError = stream->editstream->pfnCallback(stream->editstream->dwCookie,
 578                                                                 (BYTE *)stream->buffer,
 579                                                                 sizeof(stream->buffer),
 580                                                                 (LONG *)&stream->dwSize);
 581   stream->dwUsed = 0;
 582 }
 583
 584 static LRESULT ME_StreamIn(ME_TextEditor *editor, DWORD format, EDITSTREAM *stream)
 585 {
 586   RTF_Info parser;
 587   ME_Style *style;
 588   int from, to, to2, nUndoMode;
 589   ME_UndoItem *pUI;
 590   int nEventMask = editor->nEventMask;
 591   ME_InStream inStream;
 592
 593   TRACE("stream==%p hWnd==%p format==0x%X\n", stream, editor->hWnd, (UINT)format);
 594   editor->nEventMask = 0;
 595
 596   ME_GetSelection(editor, &from, &to);
 597   if (format & SFF_SELECTION) {
 598     style = ME_GetSelectionInsertStyle(editor);
 599
 600     ME_InternalDeleteText(editor, from, to-from);
 601   }
 602   else {
 603     style = editor->pBuffer->pDefaultStyle;
 604     ME_AddRefStyle(style);
 605     SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 606     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
 607     from = to = 0;
 608     ME_ClearTempStyle(editor);
 609     /* FIXME restore default paragraph formatting ! */
 610   }
 611
 612   nUndoMode = editor->nUndoMode;
 613   editor->nUndoMode = umIgnore;
 614
 615   inStream.editstream = stream;
 616   inStream.editstream->dwError = 0;
 617   inStream.dwSize = 0;
 618   inStream.dwUsed = 0;
 619
 620   if (format & SF_RTF)
 621   {
 622     /* Check if it's really RTF, and if it is not, use plain text */
 623     ME_StreamInFill(&inStream);
 624     if (!inStream.editstream->dwError)
 625     {
 626       if (strncmp(inStream.buffer, "{\\rtf1", 6) && strncmp(inStream.buffer, "{\\urtf", 6))
 627       {
 628         format &= ~SF_RTF;
 629         format |= SF_TEXT;
 630       }
 631     }
 632   }
 633
 634   if (!inStream.editstream->dwError)
 635   {
 636     if (format & SF_RTF) {
 637       /* setup the RTF parser */
 638       memset(&parser, 0, sizeof parser);
 639       RTFSetEditStream(&parser, &inStream);
 640       parser.rtfFormat = format&(SF_TEXT|SF_RTF);
 641       parser.hwndEdit = editor->hWnd;
 642       parser.editor = editor;
 643       parser.style = style;
 644       WriterInit(&parser);
 645       RTFInit(&parser);
 646       RTFSetReadHook(&parser, ME_RTFReadHook);
 647       BeginFile(&parser);
 648
 649       /* do the parsing */
 650       RTFRead(&parser);
 651       RTFFlushOutputBuffer(&parser);
 652       RTFDestroy(&parser);
 653
 654       style = parser.style;
 655     }
 656     else if (format & SF_TEXT)
 657       ME_StreamInText(editor, format, &inStream, style);
 658     else
 659       ERR("EM_STREAMIN without SF_TEXT or SF_RTF\n");
 660     ME_GetSelection(editor, &to, &to2);
 661     /* put the cursor at the top */
 662     if (!(format & SFF_SELECTION))
 663       SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 664   }
 665
 666   editor->nUndoMode = nUndoMode;
 667   if (format & SFF_SELECTION)
 668   {
 669     pUI = ME_AddUndoItem(editor, diUndoDeleteRun, NULL);
 670     TRACE("from %d to %d\n", from, to);
 671     if (pUI && from < to)
 672     {
 673       pUI->nStart = from;
 674       pUI->nLen = to-from;
 675     }
 676     ME_CommitUndo(editor);
 677   }
 678   else
 679   {
 680     ME_EmptyUndoStack(editor);
 681   }
 682
 683   ME_ReleaseStyle(style);
 684   editor->nEventMask = nEventMask;
 685   if (editor->bRedraw)
 686   {
 687     ME_UpdateRepaint(editor);
 688   }
 689   if (!(format & SFF_SELECTION)) {
 690     ME_ClearTempStyle(editor);
 691   }
 692   ME_MoveCaret(editor);
 693   ME_SendSelChange(editor);
 694   ME_SendRequestResize(editor, FALSE);
 695
 696   return 0;
 697 }
 698
 699
 700 ME_DisplayItem *
 701 ME_FindItemAtOffset(ME_TextEditor *editor, ME_DIType nItemType, int nOffset, int *nItemOffset)
 702 {
 703   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
 704
 705   while (item && item->member.para.next_para->member.para.nCharOfs <= nOffset)
 706     item = ME_FindItemFwd(item, diParagraph);
 707
 708   if (!item)
 709     return item;
 710
 711   nOffset -= item->member.para.nCharOfs;
 712   if (nItemType == diParagraph) {
 713     if (nItemOffset)
 714       *nItemOffset = nOffset;
 715     return item;
 716   }
 717
 718   do {
 719     item = ME_FindItemFwd(item, diRun);
 720   } while (item && (item->member.run.nCharOfs + ME_StrLen(item->member.run.strText) <= nOffset));
 721   if (item) {
 722     nOffset -= item->member.run.nCharOfs;
 723     if (nItemOffset)
 724       *nItemOffset = nOffset;
 725   }
 726   return item;
 727 }
 728
 729
 730 static int
 731 ME_FindText(ME_TextEditor *editor, DWORD flags, CHARRANGE *chrg, WCHAR *text, CHARRANGE *chrgText)
 732 {
 733   int nStart, nEnd;
 734   int nLen = lstrlenW(text);
 735   int nMin, nMax;
 736   ME_DisplayItem *item;
 737   ME_DisplayItem *para;
 738
 739   TRACE("flags==0x%08lx, chrg->cpMin==%ld, chrg->cpMax==%ld text==%s\n",
 740         flags, chrg->cpMin, chrg->cpMax, debugstr_w(text));
 741
 742   if (!(flags & FR_MATCHCASE))
 743     FIXME("Case-insensitive search not implemented\n");
 744   if (flags & ~(FR_DOWN | FR_MATCHCASE))
 745     FIXME("Flags 0x%08lx not implemented\n", flags & ~(FR_DOWN | FR_MATCHCASE));
 746
 747   if (chrg->cpMax == -1)
 748   {
 749     nMin = chrg->cpMin;
 750     nMax = ME_GetTextLength(editor);
 751   }
 752   else
 753   {
 754     nMin = min(chrg->cpMin, chrg->cpMax);
 755     nMax = max(chrg->cpMin, chrg->cpMax);
 756   }
 757
 758   if (!nLen)
 759   {
 760     if (chrgText)
 761       chrgText->cpMin = chrgText->cpMax = ((flags & FR_DOWN) ? nMin : nMax);
 762     return chrgText->cpMin;
 763   }
 764
 765   if (flags & FR_DOWN) /* Forward search */
 766   {
 767     nStart = nMin;
 768     item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
 769     if (!item)
 770       return -1;
 771
 772     para = ME_GetParagraph(item);
 773     while (item
 774            && para->member.para.nCharOfs + item->member.run.nCharOfs + nStart + nLen < nMax)
 775     {
 776       ME_DisplayItem *pCurItem = item;
 777       int nCurStart = nStart;
 778       int nMatched = 0;
 779
 780       while (pCurItem && pCurItem->member.run.strText->szData[nCurStart + nMatched] == text[nMatched])
 781       {
 782         nMatched++;
 783         if (nMatched == nLen)
 784         {
 785           nStart += para->member.para.nCharOfs + item->member.run.nCharOfs;
 786           if (chrgText)
 787           {
 788             chrgText->cpMin = nStart;
 789             chrgText->cpMax = nStart + nLen;
 790           }
 791           TRACE("found at %d-%d\n", nStart, nStart + nLen);
 792           return nStart;
 793         }
 794         if (nCurStart + nMatched == ME_StrLen(pCurItem->member.run.strText))
 795         {
 796           pCurItem = ME_FindItemFwd(pCurItem, diRun);
 797           para = ME_GetParagraph(pCurItem);
 798           nCurStart = -nMatched;
 799         }
 800       }
 801       nStart++;
 802       if (nStart == ME_StrLen(item->member.run.strText))
 803       {
 804         item = ME_FindItemFwd(item, diRun);
 805         para = ME_GetParagraph(item);
 806         nStart = 0;
 807       }
 808     }
 809   }
 810   else /* Backward search */
 811   {
 812     nEnd = nMax;
 813     item = ME_FindItemAtOffset(editor, diRun, nEnd, &nEnd);
 814     if (!item)
 815       return -1;
 816
 817     para = ME_GetParagraph(item);
 818
 819     while (item
 820            && para->member.para.nCharOfs + item->member.run.nCharOfs + nEnd - nLen >= nMin)
 821     {
 822       ME_DisplayItem *pCurItem = item;
 823       int nCurEnd = nEnd;
 824       int nMatched = 0;
 825
 826       while (pCurItem && pCurItem->member.run.strText->szData[nCurEnd - nMatched - 1] == text[nLen - nMatched - 1])
 827       {
 828         nMatched++;
 829         if (nMatched == nLen)
 830         {
 831           nStart = para->member.para.nCharOfs + item->member.run.nCharOfs + nCurEnd - nMatched;
 832           if (chrgText)
 833           {
 834             chrgText->cpMin = nStart;
 835             chrgText->cpMax = nStart + nLen;
 836           }
 837           TRACE("found at %d-%d\n", nStart, nStart + nLen);
 838           return nStart;
 839         }
 840         if (nCurEnd - nMatched == 0)
 841         {
 842           pCurItem = ME_FindItemBack(pCurItem, diRun);
 843           para = ME_GetParagraph(pCurItem);
 844           nCurEnd = ME_StrLen(pCurItem->member.run.strText) + nMatched;
 845         }
 846       }
 847       nEnd--;
 848       if (nEnd < 0)
 849       {
 850         item = ME_FindItemBack(item, diRun);
 851         para = ME_GetParagraph(item);
 852         nEnd = ME_StrLen(item->member.run.strText);
 853       }
 854     }
 855   }
 856   TRACE("not found\n");
 857   return -1;
 858 }
 859
 860
 861 static BOOL
 862 ME_KeyDown(ME_TextEditor *editor, WORD nKey)
 863 {
 864   BOOL ctrl_is_down = GetKeyState(VK_CONTROL) & 0x8000;
 865   BOOL shift_is_down = GetKeyState(VK_SHIFT) & 0x8000;
 866
 867   switch (nKey)
 868   {
 869     case VK_LEFT:
 870     case VK_RIGHT:
 871     case VK_UP:
 872     case VK_DOWN:
 873     case VK_HOME:
 874     case VK_END:
 875     case VK_PRIOR:
 876     case VK_NEXT:
 877       ME_ArrowKey(editor, nKey, shift_is_down, ctrl_is_down);
 878       return TRUE;
 879     case VK_BACK:
 880     case VK_DELETE:
 881       /* FIXME backspace and delete aren't the same, they act different wrt paragraph style of the merged paragraph */
 882       if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY)
 883         return FALSE;
 884       if (ME_IsSelection(editor))
 885         ME_DeleteSelection(editor);
 886       else if (nKey == VK_DELETE || ME_ArrowKey(editor, VK_LEFT, FALSE, FALSE))
 887         ME_DeleteTextAtCursor(editor, 1, 1);
 888       else
 889         return TRUE;
 890       ME_QueueInvalidateFromCursor(editor, 1);
 891       ME_UpdateRepaint(editor);
 892       ME_SendRequestResize(editor, FALSE);
 893       return TRUE;
 894
 895     default:
 896       if (ctrl_is_down)
 897       {
 898         if (nKey == 'W')
 899         {
 900           CHARFORMAT2W chf;
 901           char buf[2048];
 902
 903           ME_GetSelectionCharFormat(editor, &chf);
 904           ME_DumpStyleToBuf(&chf, buf);
 905           MessageBoxA(NULL, buf, "Style dump", MB_OK);
 906         }
 907         if (nKey == 'Q')
 908         {
 909           ME_CheckCharOffsets(editor);
 910         }
 911       }
 912   }
 913   return FALSE;
 914 }
 915
 916 static void ME_ShowContextMenu(ME_TextEditor *editor, int x, int y)
 917 {
 918   CHARRANGE selrange;
 919   HMENU menu;
 920   int seltype = 0;
 921   if(!editor->lpOleCallback)
 922     return;
 923   ME_GetSelection(editor, (int *)&selrange.cpMin, (int *)&selrange.cpMax);
 924   if(selrange.cpMin == selrange.cpMax)
 925     seltype |= SEL_EMPTY;
 926   else
 927   {
 928     /* FIXME: Handle objects */
 929     seltype |= SEL_TEXT;
 930     if(selrange.cpMax-selrange.cpMin > 1)
 931       seltype |= SEL_MULTICHAR;
 932   }
 933   if(SUCCEEDED(IRichEditOleCallback_GetContextMenu(editor->lpOleCallback, seltype, NULL, &selrange, &menu)))
 934   {
 935     TrackPopupMenu(menu, TPM_LEFTALIGN | TPM_RIGHTBUTTON, x, y, 0, GetParent(editor->hWnd), NULL);
 936     DestroyMenu(menu);
 937   }
 938 }
 939
 940 ME_TextEditor *ME_MakeEditor(HWND hWnd) {
 941   ME_TextEditor *ed = ALLOC_OBJ(ME_TextEditor);
 942   HDC hDC;
 943   int i;
 944   ed->hWnd = hWnd;
 945   ed->bEmulateVersion10 = FALSE;
 946   ed->pBuffer = ME_MakeText();
 947   hDC = GetDC(hWnd);
 948   ME_MakeFirstParagraph(hDC, ed->pBuffer);
 949   ReleaseDC(hWnd, hDC);
 950   ed->bCaretShown = FALSE;
 951   ed->nCursors = 3;
 952   ed->pCursors = ALLOC_N_OBJ(ME_Cursor, ed->nCursors);
 953   ed->pCursors[0].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
 954   ed->pCursors[0].nOffset = 0;
 955   ed->pCursors[1].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
 956   ed->pCursors[1].nOffset = 0;
 957   ed->nLastTotalLength = ed->nTotalLength = 0;
 958   ed->nUDArrowX = -1;
 959   ed->nSequence = 0;
 960   ed->rgbBackColor = -1;
 961   ed->hbrBackground = GetSysColorBrush(COLOR_WINDOW);
 962   ed->bCaretAtEnd = FALSE;
 963   ed->nEventMask = 0;
 964   ed->nModifyStep = 0;
 965   ed->pUndoStack = ed->pRedoStack = NULL;
 966   ed->nUndoMode = umAddToUndo;
 967   ed->nParagraphs = 1;
 968   ed->nLastSelStart = ed->nLastSelEnd = 0;
 969   ed->nScrollPosY = 0;
 970   ed->nZoomNumerator = ed->nZoomDenominator = 0;
 971   ed->bRedraw = TRUE;
 972   ed->nInvalidOfs = -1;
 973   ed->pfnWordBreak = NULL;
 974   ed->lpOleCallback = NULL;
 975   GetClientRect(hWnd, &ed->rcFormat);
 976   for (i=0; i<HFONT_CACHE_SIZE; i++)
 977   {
 978     ed->pFontCache[i].nRefs = 0;
 979     ed->pFontCache[i].nAge = 0;
 980     ed->pFontCache[i].hFont = NULL;
 981   }
 982   ME_CheckCharOffsets(ed);
 983   return ed;
 984 }
 985
 986 typedef struct tagME_GlobalDestStruct
 987 {
 988   HGLOBAL hData;
 989   int nLength;
 990 } ME_GlobalDestStruct;
 991
 992 static DWORD CALLBACK ME_AppendToHGLOBAL(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 993 {
 994   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 995   int nMaxSize;
 996   BYTE *pDest;
 997
 998   nMaxSize = GlobalSize(pData->hData);
 999   if (pData->nLength+cb+1 >= cb)
1000   {
1001     /* round up to 2^17 */
1002     int nNewSize = (((nMaxSize+cb+1)|0x1FFFF)+1) & 0xFFFE0000;
1003     pData->hData = GlobalReAlloc(pData->hData, nNewSize, 0);
1004   }
1005   pDest = (BYTE *)GlobalLock(pData->hData);
1006   memcpy(pDest + pData->nLength, lpBuff, cb);
1007   pData->nLength += cb;
1008   pDest[pData->nLength] = '\0';
1009   GlobalUnlock(pData->hData);
1010   *pcb = cb;
1011
1012   return 0;
1013 }
1014
1015 static DWORD CALLBACK ME_ReadFromHGLOBALUnicode(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
1016 {
1017   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
1018   int i;
1019   WORD *pSrc, *pDest;
1020
1021   cb = cb >> 1;
1022   pDest = (WORD *)lpBuff;
1023   pSrc = (WORD *)GlobalLock(pData->hData);
1024   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
1025     pDest[i] = pSrc[pData->nLength+i];
1026   }
1027   pData->nLength += i;
1028   *pcb = 2*i;
1029   GlobalUnlock(pData->hData);
1030   return 0;
1031 }
1032
1033 static DWORD CALLBACK ME_ReadFromHGLOBALRTF(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
1034 {
1035   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
1036   int i;
1037   BYTE *pSrc, *pDest;
1038
1039   pDest = lpBuff;
1040   pSrc = (BYTE *)GlobalLock(pData->hData);
1041   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
1042     pDest[i] = pSrc[pData->nLength+i];
1043   }
1044   pData->nLength += i;
1045   *pcb = i;
1046   GlobalUnlock(pData->hData);
1047   return 0;
1048 }
1049
1050
1051 void ME_DestroyEditor(ME_TextEditor *editor)
1052 {
1053   ME_DisplayItem *pFirst = editor->pBuffer->pFirst;
1054   ME_DisplayItem *p = pFirst, *pNext = NULL;
1055   int i;
1056
1057   ME_ClearTempStyle(editor);
1058   ME_EmptyUndoStack(editor);
1059   while(p) {
1060     pNext = p->next;
1061     ME_DestroyDisplayItem(p);
1062     p = pNext;
1063   }
1064   ME_ReleaseStyle(editor->pBuffer->pDefaultStyle);
1065   for (i=0; i<HFONT_CACHE_SIZE; i++)
1066   {
1067     if (editor->pFontCache[i].hFont)
1068       DeleteObject(editor->pFontCache[i].hFont);
1069   }
1070   DeleteObject(editor->hbrBackground);
1071   if(editor->lpOleCallback)
1072     IUnknown_Release(editor->lpOleCallback);
1073
1074   FREE_OBJ(editor);
1075 }
1076
1077 static const WCHAR wszClassName[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '2', '0', 'W', 0};
1078 static const WCHAR wszClassName50[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '5', '0', 'W', 0};
1079 static const WCHAR wszClassNameListBox[] = {'R','E','L','i','s','t','B','o','x','2','0','W', 0};
1080 static const WCHAR wszClassNameComboBox[] = {'R','E','C','o','m','b','o','B','o','x','2','0','W', 0};
1081
1082 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
1083 {
1084     TRACE("\n");
1085     switch (fdwReason)
1086     {
1087     case DLL_PROCESS_ATTACH:
1088       DisableThreadLibraryCalls(hinstDLL);
1089       me_heap = HeapCreate (0, 0x10000, 0);
1090       ME_RegisterEditorClass(hinstDLL);
1091       break;
1092
1093     case DLL_PROCESS_DETACH:
1094       UnregisterClassW(wszClassName, 0);
1095       UnregisterClassW(wszClassName50, 0);
1096       UnregisterClassA("RichEdit20A", 0);
1097       UnregisterClassA("RichEdit50A", 0);
1098       if (ME_ListBoxRegistered)
1099           UnregisterClassW(wszClassNameListBox, 0);
1100       if (ME_ComboBoxRegistered)
1101           UnregisterClassW(wszClassNameComboBox, 0);
1102       HeapDestroy (me_heap);
1103       me_heap = NULL;
1104       break;
1105     }
1106     return TRUE;
1107 }
1108
1109
1110 #define UNSUPPORTED_MSG(e) \
1111   case e: \
1112     FIXME(#e ": stub\n"); \
1113     return DefWindowProcW(hWnd, msg, wParam, lParam);
1114
1115 static const char * const edit_messages[] = {
1116   "EM_GETSEL",
1117   "EM_SETSEL",
1118   "EM_GETRECT",
1119   "EM_SETRECT",
1120   "EM_SETRECTNP",
1121   "EM_SCROLL",
1122   "EM_LINESCROLL",
1123   "EM_SCROLLCARET",
1124   "EM_GETMODIFY",
1125   "EM_SETMODIFY",
1126   "EM_GETLINECOUNT",
1127   "EM_LINEINDEX",
1128   "EM_SETHANDLE",
1129   "EM_GETHANDLE",
1130   "EM_GETTHUMB",
1131   "EM_UNKNOWN_BF",
1132   "EM_UNKNOWN_C0",
1133   "EM_LINELENGTH",
1134   "EM_REPLACESEL",
1135   "EM_UNKNOWN_C3",
1136   "EM_GETLINE",
1137   "EM_LIMITTEXT",
1138   "EM_CANUNDO",
1139   "EM_UNDO",
1140   "EM_FMTLINES",
1141   "EM_LINEFROMCHAR",
1142   "EM_UNKNOWN_CA",
1143   "EM_SETTABSTOPS",
1144   "EM_SETPASSWORDCHAR",
1145   "EM_EMPTYUNDOBUFFER",
1146   "EM_GETFIRSTVISIBLELINE",
1147   "EM_SETREADONLY",
1148   "EM_SETWORDBREAKPROC",
1149   "EM_GETWORDBREAKPROC",
1150   "EM_GETPASSWORDCHAR",
1151   "EM_SETMARGINS",
1152   "EM_GETMARGINS",
1153   "EM_GETLIMITTEXT",
1154   "EM_POSFROMCHAR",
1155   "EM_CHARFROMPOS"
1156 };
1157
1158 static const char * const richedit_messages[] = {
1159   "EM_CANPASTE",
1160   "EM_DISPLAYBAND",
1161   "EM_EXGETSEL",
1162   "EM_EXLIMITTEXT",
1163   "EM_EXLINEFROMCHAR",
1164   "EM_EXSETSEL",
1165   "EM_FINDTEXT",
1166   "EM_FORMATRANGE",
1167   "EM_GETCHARFORMAT",
1168   "EM_GETEVENTMASK",
1169   "EM_GETOLEINTERFACE",
1170   "EM_GETPARAFORMAT",
1171   "EM_GETSELTEXT",
1172   "EM_HIDESELECTION",
1173   "EM_PASTESPECIAL",
1174   "EM_REQUESTRESIZE",
1175   "EM_SELECTIONTYPE",
1176   "EM_SETBKGNDCOLOR",
1177   "EM_SETCHARFORMAT",
1178   "EM_SETEVENTMASK",
1179   "EM_SETOLECALLBACK",
1180   "EM_SETPARAFORMAT",
1181   "EM_SETTARGETDEVICE",
1182   "EM_STREAMIN",
1183   "EM_STREAMOUT",
1184   "EM_GETTEXTRANGE",
1185   "EM_FINDWORDBREAK",
1186   "EM_SETOPTIONS",
1187   "EM_GETOPTIONS",
1188   "EM_FINDTEXTEX",
1189   "EM_GETWORDBREAKPROCEX",
1190   "EM_SETWORDBREAKPROCEX",
1191   "EM_SETUNDOLIMIT",
1192   "EM_UNKNOWN_USER_83",
1193   "EM_REDO",
1194   "EM_CANREDO",
1195   "EM_GETUNDONAME",
1196   "EM_GETREDONAME",
1197   "EM_STOPGROUPTYPING",
1198   "EM_SETTEXTMODE",
1199   "EM_GETTEXTMODE",
1200   "EM_AUTOURLDETECT",
1201   "EM_GETAUTOURLDETECT",
1202   "EM_SETPALETTE",
1203   "EM_GETTEXTEX",
1204   "EM_GETTEXTLENGTHEX",
1205   "EM_SHOWSCROLLBAR",
1206   "EM_SETTEXTEX",
1207   "EM_UNKNOWN_USER_98",
1208   "EM_UNKNOWN_USER_99",
1209   "EM_SETPUNCTUATION",
1210   "EM_GETPUNCTUATION",
1211   "EM_SETWORDWRAPMODE",
1212   "EM_GETWORDWRAPMODE",
1213   "EM_SETIMECOLOR",
1214   "EM_GETIMECOLOR",
1215   "EM_SETIMEOPTIONS",
1216   "EM_GETIMEOPTIONS",
1217   "EM_CONVPOSITION",
1218   "EM_UNKNOWN_USER_109",
1219   "EM_UNKNOWN_USER_110",
1220   "EM_UNKNOWN_USER_111",
1221   "EM_UNKNOWN_USER_112",
1222   "EM_UNKNOWN_USER_113",
1223   "EM_UNKNOWN_USER_114",
1224   "EM_UNKNOWN_USER_115",
1225   "EM_UNKNOWN_USER_116",
1226   "EM_UNKNOWN_USER_117",
1227   "EM_UNKNOWN_USER_118",
1228   "EM_UNKNOWN_USER_119",
1229   "EM_SETLANGOPTIONS",
1230   "EM_GETLANGOPTIONS",
1231   "EM_GETIMECOMPMODE",
1232   "EM_FINDTEXTW",
1233   "EM_FINDTEXTEXW",
1234   "EM_RECONVERSION",
1235   "EM_SETIMEMODEBIAS",
1236   "EM_GETIMEMODEBIAS"
1237 };
1238
1239 static const char *
1240 get_msg_name(UINT msg)
1241 {
1242   if (msg >= EM_GETSEL && msg <= EM_SETLIMITTEXT)
1243     return edit_messages[msg - EM_GETSEL];
1244   if (msg >= EM_CANPASTE && msg <= EM_GETIMEMODEBIAS)
1245     return richedit_messages[msg - EM_CANPASTE];
1246   return "";
1247 }
1248
1249 /******************************************************************
1250  *        RichEditANSIWndProc (RICHED20.10)
1251  */
1252 LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
1253   SCROLLINFO si;
1254   ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
1255
1256   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
1257         hWnd, msg, get_msg_name(msg), wParam, lParam);
1258
1259   switch(msg) {
1260
1261   UNSUPPORTED_MSG(EM_AUTOURLDETECT)
1262   UNSUPPORTED_MSG(EM_DISPLAYBAND)
1263   UNSUPPORTED_MSG(EM_EXLIMITTEXT)
1264   UNSUPPORTED_MSG(EM_FINDWORDBREAK)
1265   UNSUPPORTED_MSG(EM_FMTLINES)
1266   UNSUPPORTED_MSG(EM_FORMATRANGE)
1267   UNSUPPORTED_MSG(EM_GETAUTOURLDETECT)
1268   UNSUPPORTED_MSG(EM_GETBIDIOPTIONS)
1269   UNSUPPORTED_MSG(EM_GETEDITSTYLE)
1270   UNSUPPORTED_MSG(EM_GETIMECOMPMODE)
1271   /* UNSUPPORTED_MSG(EM_GETIMESTATUS) missing in Wine headers */
1272   UNSUPPORTED_MSG(EM_GETLANGOPTIONS)
1273   UNSUPPORTED_MSG(EM_GETLIMITTEXT)
1274   UNSUPPORTED_MSG(EM_GETLINE)
1275   /* UNSUPPORTED_MSG(EM_GETOLEINTERFACE) separate stub */
1276   UNSUPPORTED_MSG(EM_GETOPTIONS)
1277   UNSUPPORTED_MSG(EM_GETPASSWORDCHAR)
1278   UNSUPPORTED_MSG(EM_GETREDONAME)
1279   UNSUPPORTED_MSG(EM_GETSCROLLPOS)
1280   UNSUPPORTED_MSG(EM_GETTEXTMODE)
1281   UNSUPPORTED_MSG(EM_GETTYPOGRAPHYOPTIONS)
1282   UNSUPPORTED_MSG(EM_GETUNDONAME)
1283   UNSUPPORTED_MSG(EM_GETWORDBREAKPROCEX)
1284   UNSUPPORTED_MSG(EM_HIDESELECTION)
1285   UNSUPPORTED_MSG(EM_LIMITTEXT) /* also known as EM_SETLIMITTEXT */
1286   UNSUPPORTED_MSG(EM_PASTESPECIAL)
1287   UNSUPPORTED_MSG(EM_SCROLL)
1288   UNSUPPORTED_MSG(EM_SCROLLCARET)
1289   UNSUPPORTED_MSG(EM_SELECTIONTYPE)
1290   UNSUPPORTED_MSG(EM_SETBIDIOPTIONS)
1291   UNSUPPORTED_MSG(EM_SETEDITSTYLE)
1292   UNSUPPORTED_MSG(EM_SETFONTSIZE)
1293   UNSUPPORTED_MSG(EM_SETLANGOPTIONS)
1294   UNSUPPORTED_MSG(EM_SETOPTIONS)
1295   UNSUPPORTED_MSG(EM_SETPALETTE)
1296   UNSUPPORTED_MSG(EM_SETPASSWORDCHAR)
1297   UNSUPPORTED_MSG(EM_SETSCROLLPOS)
1298   UNSUPPORTED_MSG(EM_SETTABSTOPS)
1299   UNSUPPORTED_MSG(EM_SETTARGETDEVICE)
1300   UNSUPPORTED_MSG(EM_SETTEXTMODE)
1301   UNSUPPORTED_MSG(EM_SETTYPOGRAPHYOPTIONS)
1302   UNSUPPORTED_MSG(EM_SETUNDOLIMIT)
1303   UNSUPPORTED_MSG(EM_SETWORDBREAKPROCEX)
1304   UNSUPPORTED_MSG(EM_SHOWSCROLLBAR)
1305   UNSUPPORTED_MSG(WM_SETFONT)
1306   UNSUPPORTED_MSG(WM_STYLECHANGING)
1307   UNSUPPORTED_MSG(WM_STYLECHANGED)
1308 /*  UNSUPPORTED_MSG(WM_UNICHAR) FIXME missing in Wine headers */
1309
1310 /* Messages specific to Richedit controls */
1311
1312   case EM_STREAMIN:
1313    return ME_StreamIn(editor, wParam, (EDITSTREAM*)lParam);
1314   case EM_STREAMOUT:
1315    return ME_StreamOut(editor, wParam, (EDITSTREAM *)lParam);
1316   case WM_GETDLGCODE:
1317   {
1318     UINT code = DLGC_WANTCHARS|DLGC_WANTARROWS;
1319     if (GetWindowLongW(hWnd, GWL_STYLE)&ES_WANTRETURN)
1320       code |= 0; /* FIXME what can we do here ? ask for messages and censor them ? */
1321     return code;
1322   }
1323   case WM_NCCREATE:
1324   {
1325     CREATESTRUCTW *pcs = (CREATESTRUCTW *)lParam;
1326     TRACE("WM_NCCREATE: style 0x%08lx\n", pcs->style);
1327     editor = ME_MakeEditor(hWnd);
1328     SetWindowLongW(hWnd, 0, (long)editor);
1329     pcs = 0; /* ignore */
1330     return TRUE;
1331   }
1332   case EM_EMPTYUNDOBUFFER:
1333     ME_EmptyUndoStack(editor);
1334     return 0;
1335   case EM_GETSEL:
1336   {
1337     /* Note: wParam/lParam can be NULL */
1338     UINT from, to;
1339     PUINT pfrom = wParam ? (PUINT)wParam : &from;
1340     PUINT pto = lParam ? (PUINT)lParam : &to;
1341     ME_GetSelection(editor, (int *)pfrom, (int *)pto);
1342     if ((*pfrom|*pto) & 0xFFFF0000)
1343       return -1;
1344     return MAKELONG(*pfrom,*pto);
1345   }
1346   case EM_EXGETSEL:
1347   {
1348     CHARRANGE *pRange = (CHARRANGE *)lParam;
1349     ME_GetSelection(editor, (int *)&pRange->cpMin, (int *)&pRange->cpMax);
1350     TRACE("EM_EXGETSEL = (%ld,%ld)\n", pRange->cpMin, pRange->cpMax);
1351     return 0;
1352   }
1353   case EM_CANUNDO:
1354     return editor->pUndoStack != NULL;
1355   case EM_CANREDO:
1356     return editor->pRedoStack != NULL;
1357   case WM_UNDO: /* FIXME: actually not the same */
1358   case EM_UNDO:
1359     ME_Undo(editor);
1360     return 0;
1361   case EM_REDO:
1362     ME_Redo(editor);
1363     return 0;
1364   case EM_SETSEL:
1365   {
1366     ME_InvalidateSelection(editor);
1367     ME_SetSelection(editor, wParam, lParam);
1368     ME_InvalidateSelection(editor);
1369     ME_SendSelChange(editor);
1370     return 0;
1371   }
1372   case EM_EXSETSEL:
1373   {
1374     CHARRANGE *pRange = (CHARRANGE *)lParam;
1375     TRACE("EM_EXSETSEL (%ld,%ld)\n", pRange->cpMin, pRange->cpMax);
1376     ME_InvalidateSelection(editor);
1377     ME_SetSelection(editor, pRange->cpMin, pRange->cpMax);
1378     ME_InvalidateSelection(editor);
1379     ME_SendSelChange(editor);
1380     return 0;
1381   }
1382   case EM_SETTEXTEX:
1383   {
1384     LPWSTR wszText = (LPWSTR)lParam;
1385     SETTEXTEX *pStruct = (SETTEXTEX *)wParam;
1386     size_t len = lstrlenW(wszText);
1387     int from, to;
1388     ME_Style *style;
1389     TRACE("EM_SETTEXEX - %s, flags %d, cp %d\n", debugstr_w(wszText), (int)pStruct->flags, pStruct->codepage);
1390     if (pStruct->codepage != 1200) {
1391       FIXME("EM_SETTEXTEX only supports unicode right now!\n");
1392       return 0;
1393     }
1394     /* FIXME: this should support RTF strings too, according to MSDN */
1395     if (pStruct->flags & ST_SELECTION) {
1396       ME_GetSelection(editor, &from, &to);
1397       style = ME_GetSelectionInsertStyle(editor);
1398       ME_InternalDeleteText(editor, from, to - from);
1399       ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1400       ME_ReleaseStyle(style);
1401     }
1402     else {
1403       ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1404       ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
1405       len = 1;
1406     }
1407     ME_CommitUndo(editor);
1408     if (!(pStruct->flags & ST_KEEPUNDO))
1409       ME_EmptyUndoStack(editor);
1410     ME_UpdateRepaint(editor);
1411     return len;
1412   }
1413   case EM_SETBKGNDCOLOR:
1414   {
1415     LRESULT lColor = ME_GetBackColor(editor);
1416     if (editor->rgbBackColor != -1)
1417       DeleteObject(editor->hbrBackground);
1418     if (wParam)
1419     {
1420       editor->rgbBackColor = -1;
1421       editor->hbrBackground = GetSysColorBrush(COLOR_WINDOW);
1422     }
1423     else
1424     {
1425       editor->rgbBackColor = lParam;
1426       editor->hbrBackground = CreateSolidBrush(editor->rgbBackColor);
1427     }
1428     if (editor->bRedraw)
1429     {
1430       InvalidateRect(hWnd, NULL, TRUE);
1431       UpdateWindow(hWnd);
1432     }
1433     return lColor;
1434   }
1435   case EM_GETMODIFY:
1436     return editor->nModifyStep == 0 ? 0 : 1;
1437   case EM_SETMODIFY:
1438   {
1439     if (wParam)
1440       editor->nModifyStep = 0x80000000;
1441     else
1442       editor->nModifyStep = 0;
1443
1444     return 0;
1445   }
1446   case EM_SETREADONLY:
1447   {
1448     long nStyle = GetWindowLongW(hWnd, GWL_STYLE);
1449     if (wParam)
1450       nStyle |= ES_READONLY;
1451     else
1452       nStyle &= ~ES_READONLY;
1453     SetWindowLongW(hWnd, GWL_STYLE, nStyle);
1454     return 0;
1455   }
1456   case EM_SETEVENTMASK:
1457   {
1458     DWORD nOldMask = editor->nEventMask;
1459
1460     editor->nEventMask = lParam;
1461     return nOldMask;
1462   }
1463   case EM_GETEVENTMASK:
1464     return editor->nEventMask;
1465   case EM_SETCHARFORMAT:
1466   {
1467     CHARFORMAT2W buf, *p;
1468     BOOL bRepaint = TRUE;
1469     p = ME_ToCF2W(&buf, (CHARFORMAT2W *)lParam);
1470     if (!wParam)
1471       ME_SetDefaultCharFormat(editor, p);
1472     else if (wParam == (SCF_WORD | SCF_SELECTION))
1473       FIXME("EM_SETCHARFORMAT: word selection not supported\n");
1474     else if (wParam == SCF_ALL)
1475       ME_SetCharFormat(editor, 0, ME_GetTextLength(editor), p);
1476     else {
1477       int from, to;
1478       ME_GetSelection(editor, &from, &to);
1479       bRepaint = (from != to);
1480       ME_SetSelectionCharFormat(editor, p);
1481     }
1482     ME_CommitUndo(editor);
1483     if (bRepaint)
1484       ME_UpdateRepaint(editor);
1485     return 0;
1486   }
1487   case EM_GETCHARFORMAT:
1488   {
1489     CHARFORMAT2W tmp, *dst = (CHARFORMAT2W *)lParam;
1490     if (dst->cbSize != sizeof(CHARFORMATA) &&
1491         dst->cbSize != sizeof(CHARFORMATW) &&
1492         dst->cbSize != sizeof(CHARFORMAT2A) &&
1493         dst->cbSize != sizeof(CHARFORMAT2W))
1494       return 0;
1495     tmp.cbSize = sizeof(tmp);
1496     if (!wParam)
1497       ME_GetDefaultCharFormat(editor, &tmp);
1498     else
1499       ME_GetSelectionCharFormat(editor, &tmp);
1500     ME_CopyToCFAny(dst, &tmp);
1501     return tmp.dwMask;
1502   }
1503   case EM_SETPARAFORMAT:
1504     ME_SetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1505     ME_UpdateRepaint(editor);
1506     ME_CommitUndo(editor);
1507     return 0;
1508   case EM_GETPARAFORMAT:
1509     ME_GetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1510     return 0;
1511   case EM_GETFIRSTVISIBLELINE:
1512   {
1513     ME_DisplayItem *p = editor->pBuffer->pFirst;
1514     int y = editor->nScrollPosY;
1515     int ypara = 0;
1516     int count = 0;
1517     int ystart, yend;
1518     while(p) {
1519       p = ME_FindItemFwd(p, diStartRowOrParagraphOrEnd);
1520       if (p->type == diTextEnd)
1521         break;
1522       if (p->type == diParagraph) {
1523         ypara = p->member.para.nYPos;
1524         continue;
1525       }
1526       ystart = ypara + p->member.row.nYPos;
1527       yend = ystart + p->member.row.nHeight;
1528       if (y < yend) {
1529         break;
1530       }
1531       count++;
1532     }
1533     return count;
1534   }
1535   case EM_LINESCROLL:
1536   {
1537     int nPos = editor->nScrollPosY, nEnd= editor->nTotalLength - editor->sizeWindow.cy;
1538     nPos += 8 * lParam; /* FIXME follow the original */
1539     if (nPos>=nEnd)
1540       nPos = nEnd;
1541     if (nPos<0)
1542       nPos = 0;
1543     if (nPos != editor->nScrollPosY) {
1544       int dy = editor->nScrollPosY - nPos;
1545       editor->nScrollPosY = nPos;
1546       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1547       if (editor->bRedraw)
1548       {
1549         ScrollWindow(hWnd, 0, dy, NULL, NULL);
1550         UpdateWindow(hWnd);
1551       }
1552     }
1553     return TRUE; /* Should return false if a single line richedit control */
1554   }
1555   case WM_CLEAR:
1556   {
1557     int from, to;
1558     ME_GetSelection(editor, &from, &to);
1559     ME_InternalDeleteText(editor, from, to-from);
1560     ME_CommitUndo(editor);
1561     ME_UpdateRepaint(editor);
1562     return 0;
1563   }
1564   case EM_REPLACESEL:
1565   {
1566     int from, to;
1567     ME_Style *style;
1568     LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
1569     size_t len = lstrlenW(wszText);
1570     TRACE("EM_REPLACESEL - %s\n", debugstr_w(wszText));
1571
1572     ME_GetSelection(editor, &from, &to);
1573     style = ME_GetSelectionInsertStyle(editor);
1574     ME_InternalDeleteText(editor, from, to-from);
1575     ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1576     ME_ReleaseStyle(style);
1577     ME_EndToUnicode(hWnd, wszText);
1578     /* drop temporary style if line end */
1579     /* FIXME question: does abc\n mean: put abc, clear temp style, put \n? (would require a change) */
1580     if (len>0 && wszText[len-1] == '\n')
1581       ME_ClearTempStyle(editor);
1582
1583     ME_CommitUndo(editor);
1584     if (!wParam)
1585       ME_EmptyUndoStack(editor);
1586     ME_UpdateRepaint(editor);
1587     return 0;
1588   }
1589   case WM_SETTEXT:
1590   {
1591     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1592     if (lParam)
1593     {
1594       LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
1595       TRACE("WM_SETTEXT lParam==%lx\n",lParam);
1596       TRACE("WM_SETTEXT - %s\n", debugstr_w(wszText)); /* debugstr_w() */
1597       if (lstrlenW(wszText) > 0)
1598       {
1599         /* uses default style! */
1600         ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
1601       }
1602       ME_EndToUnicode(hWnd, wszText);
1603     }
1604     else
1605       TRACE("WM_SETTEXT - NULL\n");
1606     ME_CommitUndo(editor);
1607     ME_EmptyUndoStack(editor);
1608     ME_SetSelection(editor, 0, 0);
1609     ME_UpdateRepaint(editor);
1610     return 0;
1611   }
1612   case EM_CANPASTE:
1613   {
1614     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1615     if (IsClipboardFormatAvailable(nRTFFormat))
1616       return TRUE;
1617     if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1618       return TRUE;
1619     return FALSE;
1620   }
1621   case WM_PASTE:
1622   {
1623     DWORD dwFormat = 0;
1624     EDITSTREAM es;
1625     ME_GlobalDestStruct gds;
1626     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1627     UINT cf = 0;
1628
1629     if (IsClipboardFormatAvailable(nRTFFormat))
1630       cf = nRTFFormat, dwFormat = SF_RTF;
1631     else if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1632       cf = CF_UNICODETEXT, dwFormat = SF_TEXT|SF_UNICODE;
1633     else
1634       return 0;
1635
1636     if (!OpenClipboard(hWnd))
1637       return 0;
1638     gds.hData = GetClipboardData(cf);
1639     gds.nLength = 0;
1640     es.dwCookie = (DWORD)&gds;
1641     es.pfnCallback = dwFormat == SF_RTF ? ME_ReadFromHGLOBALRTF : ME_ReadFromHGLOBALUnicode;
1642     SendMessageW(hWnd, EM_STREAMIN, dwFormat|SFF_SELECTION, (LPARAM)&es);
1643
1644     CloseClipboard();
1645     return 0;
1646   }
1647   case WM_CUT:
1648   case WM_COPY:
1649   {
1650     int from, to, pars;
1651     WCHAR *data;
1652     HANDLE hData;
1653     EDITSTREAM es;
1654     ME_GlobalDestStruct gds;
1655
1656     if (!OpenClipboard(hWnd))
1657       return 0;
1658
1659     EmptyClipboard();
1660     ME_GetSelection(editor, &from, &to);
1661     pars = ME_CountParagraphsBetween(editor, from, to);
1662     hData = GlobalAlloc(GMEM_MOVEABLE, sizeof(WCHAR)*(to-from+pars+1));
1663     data = (WCHAR *)GlobalLock(hData);
1664     ME_GetTextW(editor, data, from, to-from, TRUE);
1665     GlobalUnlock(hData);
1666
1667     gds.hData = GlobalAlloc(GMEM_MOVEABLE, 0);
1668     gds.nLength = 0;
1669     es.dwCookie = (DWORD)&gds;
1670     es.pfnCallback = ME_AppendToHGLOBAL;
1671     ME_StreamOutRange(editor, SF_RTF, from, to, &es);
1672     GlobalReAlloc(gds.hData, gds.nLength+1, 0);
1673
1674     SetClipboardData(CF_UNICODETEXT, hData);
1675     SetClipboardData(RegisterClipboardFormatA("Rich Text Format"), gds.hData);
1676
1677     CloseClipboard();
1678     if (msg == WM_CUT)
1679     {
1680       ME_InternalDeleteText(editor, from, to-from);
1681       ME_CommitUndo(editor);
1682       ME_UpdateRepaint(editor);
1683     }
1684     return 0;
1685   }
1686   case WM_GETTEXTLENGTH:
1687     return ME_GetTextLength(editor);
1688   case EM_GETTEXTLENGTHEX:
1689     return ME_GetTextLengthEx(editor, (GETTEXTLENGTHEX *)wParam);
1690   case WM_GETTEXT:
1691   {
1692     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1693     tr.chrg.cpMin = 0;
1694     tr.chrg.cpMax = wParam-1;
1695     tr.lpstrText = (WCHAR *)lParam;
1696     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1697   }
1698   case EM_GETTEXTEX:
1699   {
1700     GETTEXTEX *ex = (GETTEXTEX*)wParam;
1701     int nStart, nCount;
1702
1703     if (ex->flags & ~(GT_SELECTION | GT_USECRLF))
1704       FIXME("GETTEXTEX flags 0x%08lx not supported\n", ex->flags & ~(GT_SELECTION | GT_USECRLF));
1705
1706     if (ex->flags & GT_SELECTION)
1707     {
1708       ME_GetSelection(editor, &nStart, &nCount);
1709       nCount -= nStart;
1710       nCount = min(nCount, ex->cb - 1);
1711     }
1712     else
1713     {
1714       nStart = 0;
1715       nCount = ex->cb - 1;
1716     }
1717     if (ex->codepage == 1200 || IsWindowUnicode(hWnd))
1718     {
1719       nCount = min(nCount, ex->cb / sizeof(WCHAR) - 1);
1720       return ME_GetTextW(editor, (LPWSTR)lParam, nStart, nCount, ex->flags & GT_USECRLF);
1721     }
1722     else
1723     {
1724       /* potentially each char may be a CR, why calculate the exact value with O(N) when
1725         we can just take a bigger buffer? :) */
1726       int crlfmul = (ex->flags & GT_USECRLF) ? 2 : 1;
1727       LPWSTR buffer = HeapAlloc(GetProcessHeap(), 0, (crlfmul*nCount + 1) * sizeof(WCHAR));
1728       DWORD buflen = ex->cb;
1729       LRESULT rc;
1730       DWORD flags = 0;
1731
1732       buflen = ME_GetTextW(editor, buffer, nStart, nCount, ex->flags & GT_USECRLF);
1733       rc = WideCharToMultiByte(ex->codepage, flags, buffer, buflen, (LPSTR)lParam, ex->cb, ex->lpDefaultChar, ex->lpUsedDefaultChar);
1734
1735       HeapFree(GetProcessHeap(),0,buffer);
1736       return rc;
1737     }
1738   }
1739   case EM_GETSELTEXT:
1740   {
1741     int from, to;
1742     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1743     ME_GetSelection(editor, &from, &to);
1744     tr.chrg.cpMin = from;
1745     tr.chrg.cpMax = to;
1746     tr.lpstrText = (WCHAR *)lParam;
1747     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1748   }
1749   case EM_GETTEXTRANGE:
1750   {
1751     TEXTRANGEW *rng = (TEXTRANGEW *)lParam;
1752     TRACE("EM_GETTEXTRANGE min=%ld max=%ld unicode=%d emul1.0=%d length=%d\n",
1753       rng->chrg.cpMin, rng->chrg.cpMax, IsWindowUnicode(hWnd),
1754       editor->bEmulateVersion10, ME_GetTextLength(editor));
1755     if (IsWindowUnicode(hWnd))
1756       return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, editor->bEmulateVersion10);
1757     else
1758     {
1759       int nLen = rng->chrg.cpMax-rng->chrg.cpMin;
1760       WCHAR *p = ALLOC_N_OBJ(WCHAR, nLen+1);
1761       int nChars = ME_GetTextW(editor, p, rng->chrg.cpMin, nLen, editor->bEmulateVersion10);
1762       /* FIXME this is a potential security hole (buffer overrun)
1763          if you know more about wchar->mbyte conversion please explain
1764       */
1765       WideCharToMultiByte(CP_ACP, 0, p, nChars+1, (char *)rng->lpstrText, nLen+1, NULL, NULL);
1766       FREE_OBJ(p);
1767       return nChars;
1768     }
1769   }
1770   case EM_GETLINECOUNT:
1771   {
1772     ME_DisplayItem *item = editor->pBuffer->pFirst->next;
1773     int nRows = 0;
1774
1775     while (item != editor->pBuffer->pLast)
1776     {
1777       assert(item->type == diParagraph);
1778       nRows += item->member.para.nRows;
1779       item = item->member.para.next_para;
1780     }
1781     TRACE("EM_GETLINECOUNT: nRows==%d\n", nRows);
1782     return max(1, nRows);
1783   }
1784   case EM_LINEFROMCHAR:
1785   {
1786     if (wParam == -1)
1787       return ME_RowNumberFromCharOfs(editor, ME_GetCursorOfs(editor, 1));
1788     else
1789       return ME_RowNumberFromCharOfs(editor, wParam);
1790   }
1791   case EM_EXLINEFROMCHAR:
1792   {
1793     return ME_RowNumberFromCharOfs(editor, lParam);
1794   }
1795   case EM_LINEINDEX:
1796   {
1797     ME_DisplayItem *item, *para;
1798     int nCharOfs;
1799
1800     if (wParam == -1)
1801       item = ME_FindItemBack(editor->pCursors[0].pRun, diStartRow);
1802     else
1803       item = ME_FindRowWithNumber(editor, wParam);
1804     if (!item)
1805       return -1;
1806     para = ME_GetParagraph(item);
1807     item = ME_FindItemFwd(item, diRun);
1808     nCharOfs = para->member.para.nCharOfs + item->member.run.nCharOfs;
1809     TRACE("EM_LINEINDEX: nCharOfs==%d\n", nCharOfs);
1810     return nCharOfs;
1811   }
1812   case EM_LINELENGTH:
1813   {
1814     ME_DisplayItem *item, *item_end;
1815     int nChars = 0, nThisLineOfs = 0, nNextLineOfs = 0;
1816
1817     if (wParam > ME_GetTextLength(editor))
1818       return 0;
1819     if (wParam == -1)
1820     {
1821       FIXME("EM_LINELENGTH: returning number of unselected characters on lines with selection unsupported.\n");
1822       return 0;
1823     }
1824     item = ME_FindItemAtOffset(editor, diRun, wParam, NULL);
1825     item = ME_RowStart(item);
1826     nThisLineOfs = ME_CharOfsFromRunOfs(editor, ME_FindItemFwd(item, diRun), 0);
1827     item_end = ME_FindItemFwd(item, diStartRow);
1828     if (item_end)
1829       nNextLineOfs = ME_CharOfsFromRunOfs(editor, ME_FindItemFwd(item_end, diRun), 0);
1830     else
1831       nNextLineOfs = ME_FindItemFwd(item, diParagraphOrEnd)->member.para.nCharOfs
1832        - (editor->bEmulateVersion10?2:1);
1833     nChars = nNextLineOfs - nThisLineOfs;
1834     TRACE("EM_LINELENGTH(%d)==%d\n",wParam, nChars);
1835     return nChars;
1836   }
1837   case EM_FINDTEXT:
1838   {
1839     FINDTEXTA *ft = (FINDTEXTA *)lParam;
1840     int nChars = MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, NULL, 0);
1841     WCHAR *tmp;
1842
1843     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
1844       MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, tmp, nChars);
1845     return ME_FindText(editor, wParam, &ft->chrg, tmp, NULL);
1846   }
1847   case EM_FINDTEXTEX:
1848   {
1849     FINDTEXTEXA *ex = (FINDTEXTEXA *)lParam;
1850     int nChars = MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, NULL, 0);
1851     WCHAR *tmp;
1852
1853     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
1854       MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, tmp, nChars);
1855     return ME_FindText(editor, wParam, &ex->chrg, tmp, &ex->chrgText);
1856   }
1857   case EM_FINDTEXTW:
1858   {
1859     FINDTEXTW *ft = (FINDTEXTW *)lParam;
1860     return ME_FindText(editor, wParam, &ft->chrg, ft->lpstrText, NULL);
1861   }
1862   case EM_FINDTEXTEXW:
1863   {
1864     FINDTEXTEXW *ex = (FINDTEXTEXW *)lParam;
1865     return ME_FindText(editor, wParam, &ex->chrg, ex->lpstrText, &ex->chrgText);
1866   }
1867   case EM_GETZOOM:
1868     if (!wParam || !lParam)
1869       return FALSE;
1870     *(int *)wParam = editor->nZoomNumerator;
1871     *(int *)lParam = editor->nZoomDenominator;
1872     return TRUE;
1873   case EM_SETZOOM:
1874     return ME_SetZoom(editor, wParam, lParam);
1875   case EM_CHARFROMPOS:
1876     return ME_CharFromPos(editor, ((POINTL *)lParam)->x, ((POINTL *)lParam)->y);
1877   case EM_POSFROMCHAR:
1878   {
1879     ME_DisplayItem *pRun;
1880     int nCharOfs, nOffset, nLength;
1881     POINTL pt = {0,0};
1882
1883     nCharOfs = wParam;
1884     /* detect which API version we're dealing with */
1885     if (wParam >= 0x40000)
1886         nCharOfs = lParam;
1887     nLength = ME_GetTextLength(editor);
1888
1889     if (nCharOfs < nLength) {
1890         ME_RunOfsFromCharOfs(editor, nCharOfs, &pRun, &nOffset);
1891         assert(pRun->type == diRun);
1892         pt.y = pRun->member.run.pt.y;
1893         pt.x = pRun->member.run.pt.x + ME_PointFromChar(editor, &pRun->member.run, nOffset);
1894         pt.y += ME_GetParagraph(pRun)->member.para.nYPos;
1895     } else {
1896         pt.x = 0;
1897         pt.y = editor->pBuffer->pLast->member.para.nYPos;
1898     }
1899     if (wParam >= 0x40000) {
1900         *(POINTL *)wParam = pt;
1901     }
1902     return MAKELONG( pt.x, pt.y );
1903   }
1904   case WM_CREATE:
1905     ME_CommitUndo(editor);
1906     ME_WrapMarkedParagraphs(editor);
1907     ME_MoveCaret(editor);
1908     return 0;
1909   case WM_DESTROY:
1910     ME_DestroyEditor(editor);
1911     SetWindowLongW(hWnd, 0, 0);
1912     return 0;
1913   case WM_LBUTTONDOWN:
1914     SetFocus(hWnd);
1915     ME_LButtonDown(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1916     SetCapture(hWnd);
1917     break;
1918   case WM_MOUSEMOVE:
1919     if (GetCapture() == hWnd)
1920       ME_MouseMove(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1921     break;
1922   case WM_LBUTTONUP:
1923     if (GetCapture() == hWnd)
1924       ReleaseCapture();
1925     break;
1926   case WM_LBUTTONDBLCLK:
1927     ME_SelectWord(editor);
1928     break;
1929   case WM_CONTEXTMENU:
1930     ME_ShowContextMenu(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1931     break;
1932   case WM_PAINT:
1933     if (editor->bRedraw)
1934     {
1935       HDC hDC;
1936       PAINTSTRUCT ps;
1937
1938       hDC = BeginPaint(hWnd, &ps);
1939       ME_PaintContent(editor, hDC, FALSE, &ps.rcPaint);
1940       EndPaint(hWnd, &ps);
1941     }
1942     break;
1943   case WM_SETFOCUS:
1944     ME_ShowCaret(editor);
1945     ME_SendOldNotify(editor, EN_SETFOCUS);
1946     return 0;
1947   case WM_KILLFOCUS:
1948     ME_HideCaret(editor);
1949     ME_SendOldNotify(editor, EN_KILLFOCUS);
1950     return 0;
1951   case WM_ERASEBKGND:
1952   {
1953     if (editor->bRedraw)
1954     {
1955       HDC hDC = (HDC)wParam;
1956       RECT rc;
1957       if (GetUpdateRect(hWnd,&rc,TRUE))
1958       {
1959         FillRect(hDC, &rc, editor->hbrBackground);
1960       }
1961     }
1962     return 1;
1963   }
1964   case WM_COMMAND:
1965     TRACE("editor wnd command = %d\n", LOWORD(wParam));
1966     return 0;
1967   case WM_KEYDOWN:
1968     if (ME_KeyDown(editor, LOWORD(wParam)))
1969       return 0;
1970     goto do_default;
1971   case WM_CHAR:
1972   {
1973     WCHAR wstr = LOWORD(wParam);
1974
1975     switch (wstr)
1976     {
1977     case 3: /* Ctrl-C */
1978       SendMessageW(editor->hWnd, WM_COPY, 0, 0);
1979       return 0;
1980     }
1981
1982     if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY) {
1983       MessageBeep(MB_ICONERROR);
1984       return 0; /* FIXME really 0 ? */
1985     }
1986
1987     switch (wstr)
1988     {
1989     case 1: /* Ctrl-A */
1990       ME_SetSelection(editor, 0, -1);
1991       return 0;
1992     case 22: /* Ctrl-V */
1993       SendMessageW(editor->hWnd, WM_PASTE, 0, 0);
1994       return 0;
1995     case 24: /* Ctrl-X */
1996       SendMessageW(editor->hWnd, WM_CUT, 0, 0);
1997       return 0;
1998     case 25: /* Ctrl-Y */
1999       SendMessageW(editor->hWnd, EM_REDO, 0, 0);
2000       return 0;
2001     case 26: /* Ctrl-Z */
2002       SendMessageW(editor->hWnd, EM_UNDO, 0, 0);
2003       return 0;
2004     }
2005     if (((unsigned)wstr)>=' ' || wstr=='\r' || wstr=='\t') {
2006       /* FIXME maybe it would make sense to call EM_REPLACESEL instead ? */
2007       ME_Style *style = ME_GetInsertStyle(editor, 0);
2008       ME_SaveTempStyle(editor);
2009       ME_InsertTextFromCursor(editor, 0, &wstr, 1, style);
2010       ME_ReleaseStyle(style);
2011       ME_CommitUndo(editor);
2012       ME_UpdateRepaint(editor);
2013     }
2014     return 0;
2015   }
2016   case WM_VSCROLL:
2017   {
2018     int nPos = editor->nScrollPosY;
2019     si.cbSize = sizeof(SCROLLINFO);
2020     si.fMask = SIF_PAGE|SIF_POS|SIF_RANGE|SIF_TRACKPOS;
2021     GetScrollInfo(hWnd, SB_VERT, &si);
2022     switch(LOWORD(wParam)) {
2023     case SB_LINEUP:
2024       nPos -= 24; /* FIXME follow the original */
2025       if (nPos<0) nPos = 0;
2026       break;
2027     case SB_LINEDOWN:
2028     {
2029       int nEnd = editor->nTotalLength - editor->sizeWindow.cy;
2030       nPos += 24; /* FIXME follow the original */
2031       if (nPos>=nEnd) nPos = nEnd;
2032       break;
2033     }
2034     case SB_PAGEUP:
2035       nPos -= editor->sizeWindow.cy;
2036       if (nPos<0) nPos = 0;
2037       break;
2038     case SB_PAGEDOWN:
2039       nPos += editor->sizeWindow.cy;
2040       if (nPos>=editor->nTotalLength) nPos = editor->nTotalLength-1;
2041       break;
2042     case SB_THUMBTRACK:
2043     case SB_THUMBPOSITION:
2044       nPos = si.nTrackPos;
2045       break;
2046     }
2047     if (nPos != editor->nScrollPosY) {
2048       int dy = editor->nScrollPosY - nPos;
2049       editor->nScrollPosY = nPos;
2050       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
2051       if (editor->bRedraw)
2052       {
2053         ScrollWindow(hWnd, 0, dy, NULL, NULL);
2054         UpdateWindow(hWnd);
2055       }
2056     }
2057     break;
2058   }
2059   case WM_MOUSEWHEEL:
2060   {
2061     int gcWheelDelta = 0, nPos = editor->nScrollPosY, nEnd = editor->nTotalLength - editor->sizeWindow.cy;
2062     UINT pulScrollLines;
2063     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
2064     gcWheelDelta -= GET_WHEEL_DELTA_WPARAM(wParam);
2065     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
2066       nPos += pulScrollLines * (gcWheelDelta / WHEEL_DELTA) * 8; /* FIXME follow the original */
2067     if (nPos>=nEnd)
2068       nPos = nEnd;
2069     if (nPos<0)
2070       nPos = 0;
2071     if (nPos != editor->nScrollPosY) {
2072       int dy = editor->nScrollPosY - nPos;
2073       editor->nScrollPosY = nPos;
2074       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
2075       if (editor->bRedraw)
2076       {
2077         ScrollWindow(hWnd, 0, dy, NULL, NULL);
2078         UpdateWindow(hWnd);
2079       }
2080     }
2081     break;
2082   }
2083   case EM_GETRECT:
2084   {
2085     *((RECT *)lParam) = editor->rcFormat;
2086     return 0;
2087   }
2088   case EM_SETRECT:
2089   case EM_SETRECTNP:
2090   {
2091     if (lParam)
2092     {
2093       RECT *rc = (RECT *)lParam;
2094
2095       if (wParam)
2096       {
2097         editor->rcFormat.left += rc->left;
2098         editor->rcFormat.top += rc->top;
2099         editor->rcFormat.right += rc->right;
2100         editor->rcFormat.bottom += rc->bottom;
2101       }
2102       else
2103       {
2104         editor->rcFormat = *rc;
2105       }
2106     }
2107     else
2108     {
2109       GetClientRect(hWnd, &editor->rcFormat);
2110     }
2111     if (msg != EM_SETRECTNP)
2112       ME_RewrapRepaint(editor);
2113     return 0;
2114   }
2115   case EM_REQUESTRESIZE:
2116     ME_SendRequestResize(editor, TRUE);
2117     return 0;
2118   case WM_SETREDRAW:
2119     editor->bRedraw = wParam;
2120     return 0;
2121   case WM_SIZE:
2122   {
2123     GetClientRect(hWnd, &editor->rcFormat);
2124     ME_RewrapRepaint(editor);
2125     return DefWindowProcW(hWnd, msg, wParam, lParam);
2126   }
2127   case EM_GETOLEINTERFACE:
2128   {
2129     LPVOID *ppvObj = (LPVOID*) lParam;
2130     FIXME("EM_GETOLEINTERFACE %p: stub\n", ppvObj);
2131     return CreateIRichEditOle(ppvObj);
2132   }
2133   case EM_SETOLECALLBACK:
2134     if(editor->lpOleCallback)
2135       IUnknown_Release(editor->lpOleCallback);
2136     editor->lpOleCallback = (LPRICHEDITOLECALLBACK)lParam;
2137     if(editor->lpOleCallback)
2138       IUnknown_AddRef(editor->lpOleCallback);
2139     return TRUE;
2140   case EM_GETWORDBREAKPROC:
2141     return (LRESULT)editor->pfnWordBreak;
2142   case EM_SETWORDBREAKPROC:
2143   {
2144     EDITWORDBREAKPROCW pfnOld = editor->pfnWordBreak;
2145
2146     editor->pfnWordBreak = (EDITWORDBREAKPROCW)lParam;
2147     return (LRESULT)pfnOld;
2148   }
2149   default:
2150   do_default:
2151     return DefWindowProcW(hWnd, msg, wParam, lParam);
2152   }
2153   return 0L;
2154 }
2155
2156
2157 /******************************************************************
2158  *        RichEdit10ANSIWndProc (RICHED20.9)
2159  */
2160 LRESULT WINAPI RichEdit10ANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
2161 {
2162   LRESULT result;
2163
2164   /* FIXME: this is NOT the same as 2.0 version */
2165   result = RichEditANSIWndProc(hWnd, msg, wParam, lParam);
2166   if (msg == WM_NCCREATE)
2167   {
2168     ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
2169
2170     editor->bEmulateVersion10 = TRUE;
2171     editor->pBuffer->pLast->member.para.nCharOfs = 2;
2172   }
2173   return result;
2174 }
2175
2176 void ME_SendOldNotify(ME_TextEditor *editor, int nCode)
2177 {
2178   HWND hWnd = editor->hWnd;
2179   SendMessageA(GetParent(hWnd), WM_COMMAND, (nCode<<16)|GetWindowLongW(hWnd, GWLP_ID), (LPARAM)hWnd);
2180 }
2181
2182 int ME_CountParagraphsBetween(ME_TextEditor *editor, int from, int to)
2183 {
2184   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
2185   int i = 0;
2186
2187   while(item && item->member.para.next_para->member.para.nCharOfs <= from)
2188     item = item->member.para.next_para;
2189   if (!item)
2190     return 0;
2191   while(item && item->member.para.next_para->member.para.nCharOfs <= to) {
2192     item = item->member.para.next_para;
2193     i++;
2194   }
2195   return i;
2196 }
2197
2198
2199 int ME_GetTextW(ME_TextEditor *editor, WCHAR *buffer, int nStart, int nChars, int bCRLF)
2200 {
2201   ME_DisplayItem *item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
2202   int nWritten = 0;
2203   WCHAR *pStart = buffer;
2204
2205   if (!item) {
2206     *buffer = L'\0';
2207     return 0;
2208   }
2209
2210   if (nStart)
2211   {
2212     int nLen = ME_StrLen(item->member.run.strText) - nStart;
2213     if (nLen > nChars)
2214       nLen = nChars;
2215     CopyMemory(buffer, item->member.run.strText->szData + nStart, sizeof(WCHAR)*nLen);
2216     nChars -= nLen;
2217     nWritten += nLen;
2218     if (!nChars)
2219       return nWritten;
2220     buffer += nLen;
2221     nStart = 0;
2222     item = ME_FindItemFwd(item, diRun);
2223   }
2224
2225   while(nChars && item)
2226   {
2227     int nLen = ME_StrLen(item->member.run.strText);
2228     if (nLen > nChars)
2229       nLen = nChars;
2230
2231     if (item->member.run.nFlags & MERF_ENDPARA)
2232     {
2233       *buffer = '\r';
2234       if (bCRLF)
2235       {
2236         *(++buffer) = '\n';
2237         nWritten++;
2238       }
2239       assert(nLen == 1);
2240       /* our end paragraph consists of 2 characters now */
2241       if (editor->bEmulateVersion10)
2242         nChars--;
2243     }
2244     else
2245       CopyMemory(buffer, item->member.run.strText->szData, sizeof(WCHAR)*nLen);
2246     nChars -= nLen;
2247     nWritten += nLen;
2248     buffer += nLen;
2249
2250     if (!nChars)
2251     {
2252       TRACE("nWritten=%d, actual=%d\n", nWritten, buffer-pStart);
2253       *buffer = L'\0';
2254       return nWritten;
2255     }
2256     item = ME_FindItemFwd(item, diRun);
2257   }
2258   *buffer = L'\0';
2259   TRACE("nWritten=%d, actual=%d\n", nWritten, buffer-pStart);
2260   return nWritten;
2261 }
2262
2263 void ME_RegisterEditorClass(HINSTANCE hInstance)
2264 {
2265   BOOL bResult;
2266   WNDCLASSW wcW;
2267   WNDCLASSA wcA;
2268
2269   wcW.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
2270   wcW.lpfnWndProc = RichEditANSIWndProc;
2271   wcW.cbClsExtra = 0;
2272   wcW.cbWndExtra = 4;
2273   wcW.hInstance = NULL; /* hInstance would register DLL-local class */
2274   wcW.hIcon = NULL;
2275   wcW.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
2276   wcW.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
2277   wcW.lpszMenuName = NULL;
2278   wcW.lpszClassName = wszClassName;
2279   bResult = RegisterClassW(&wcW);
2280   assert(bResult);
2281   wcW.lpszClassName = wszClassName50;
2282   bResult = RegisterClassW(&wcW);
2283   assert(bResult);
2284
2285   wcA.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
2286   wcA.lpfnWndProc = RichEditANSIWndProc;
2287   wcA.cbClsExtra = 0;
2288   wcA.cbWndExtra = 4;
2289   wcA.hInstance = NULL; /* hInstance would register DLL-local class */
2290   wcA.hIcon = NULL;
2291   wcA.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
2292   wcA.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
2293   wcA.lpszMenuName = NULL;
2294   wcA.lpszClassName = "RichEdit20A";
2295   bResult = RegisterClassA(&wcA);
2296   assert(bResult);
2297   wcA.lpszClassName = "RichEdit50A";
2298   bResult = RegisterClassA(&wcA);
2299   assert(bResult);
2300 }
2301
2302 LRESULT WINAPI REComboWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
2303   /* FIXME: Not implemented */
2304   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
2305         hWnd, msg, get_msg_name(msg), wParam, lParam);
2306   return DefWindowProcW(hWnd, msg, wParam, lParam);
2307 }
2308
2309 LRESULT WINAPI REListWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
2310   /* FIXME: Not implemented */
2311   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
2312         hWnd, msg, get_msg_name(msg), wParam, lParam);
2313   return DefWindowProcW(hWnd, msg, wParam, lParam);
2314 }
2315
2316 /******************************************************************
2317  *        REExtendedRegisterClass (RICHED20.8)
2318  *
2319  * FIXME undocumented
2320  * Need to check for errors and implement controls and callbacks
2321  */
2322 LRESULT WINAPI REExtendedRegisterClass(void)
2323 {
2324   WNDCLASSW wcW;
2325   UINT result;
2326
2327   FIXME("semi stub\n");
2328
2329   wcW.cbClsExtra = 0;
2330   wcW.cbWndExtra = 4;
2331   wcW.hInstance = NULL;
2332   wcW.hIcon = NULL;
2333   wcW.hCursor = NULL;
2334   wcW.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
2335   wcW.lpszMenuName = NULL;
2336
2337   if (!ME_ListBoxRegistered)
2338   {
2339       wcW.style = CS_PARENTDC | CS_DBLCLKS | CS_GLOBALCLASS;
2340       wcW.lpfnWndProc = REListWndProc;
2341       wcW.lpszClassName = wszClassNameListBox;
2342       if (RegisterClassW(&wcW)) ME_ListBoxRegistered = TRUE;
2343   }
2344
2345   if (!ME_ComboBoxRegistered)
2346   {
2347       wcW.style = CS_PARENTDC | CS_DBLCLKS | CS_GLOBALCLASS | CS_VREDRAW | CS_HREDRAW;
2348       wcW.lpfnWndProc = REComboWndProc;
2349       wcW.lpszClassName = wszClassNameComboBox;
2350       if (RegisterClassW(&wcW)) ME_ComboBoxRegistered = TRUE;
2351   }
2352
2353   result = 0;
2354   if (ME_ListBoxRegistered)
2355       result += 1;
2356   if (ME_ComboBoxRegistered)
2357       result += 2;
2358
2359   return result;
2360 }