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 (only Y value valid)
  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 (partially implemented)
 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) && (editor->mode & TM_RICHTEXT)) {
 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 typedef struct tagME_RTFStringStreamStruct
 701 {
 702   char *string;
 703   int pos;
 704   int length;
 705 } ME_RTFStringStreamStruct;
 706
 707 static DWORD CALLBACK ME_ReadFromRTFString(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 708 {
 709   ME_RTFStringStreamStruct *pStruct = (ME_RTFStringStreamStruct *)dwCookie;
 710   int count;
 711
 712   count = min(cb, pStruct->length - pStruct->pos);
 713   memmove(lpBuff, pStruct->string + pStruct->pos, count);
 714   pStruct->pos += count;
 715   *pcb = count;
 716   return 0;
 717 }
 718
 719 static void
 720 ME_StreamInRTFString(ME_TextEditor *editor, BOOL selection, char *string)
 721 {
 722   EDITSTREAM es;
 723   ME_RTFStringStreamStruct data;
 724
 725   data.string = string;
 726   data.length = strlen(string);
 727   data.pos = 0;
 728   es.dwCookie = (DWORD)&data;
 729   es.pfnCallback = ME_ReadFromRTFString;
 730   ME_StreamIn(editor, SF_RTF | (selection ? SFF_SELECTION : 0), &es);
 731 }
 732
 733
 734 ME_DisplayItem *
 735 ME_FindItemAtOffset(ME_TextEditor *editor, ME_DIType nItemType, int nOffset, int *nItemOffset)
 736 {
 737   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
 738
 739   while (item && item->member.para.next_para->member.para.nCharOfs <= nOffset)
 740     item = ME_FindItemFwd(item, diParagraph);
 741
 742   if (!item)
 743     return item;
 744
 745   nOffset -= item->member.para.nCharOfs;
 746   if (nItemType == diParagraph) {
 747     if (nItemOffset)
 748       *nItemOffset = nOffset;
 749     return item;
 750   }
 751
 752   do {
 753     item = ME_FindItemFwd(item, diRun);
 754   } while (item && (item->member.run.nCharOfs + ME_StrLen(item->member.run.strText) <= nOffset));
 755   if (item) {
 756     nOffset -= item->member.run.nCharOfs;
 757     if (nItemOffset)
 758       *nItemOffset = nOffset;
 759   }
 760   return item;
 761 }
 762
 763
 764 static int
 765 ME_FindText(ME_TextEditor *editor, DWORD flags, CHARRANGE *chrg, WCHAR *text, CHARRANGE *chrgText)
 766 {
 767   int nStart, nEnd;
 768   int nLen = lstrlenW(text);
 769   int nMin, nMax;
 770   ME_DisplayItem *item;
 771   ME_DisplayItem *para;
 772
 773   TRACE("flags==0x%08lx, chrg->cpMin==%ld, chrg->cpMax==%ld text==%s\n",
 774         flags, chrg->cpMin, chrg->cpMax, debugstr_w(text));
 775
 776   if (flags & ~(FR_DOWN | FR_MATCHCASE))
 777     FIXME("Flags 0x%08lx not implemented\n", flags & ~(FR_DOWN | FR_MATCHCASE));
 778
 779   nMin = chrg->cpMin;
 780   if (chrg->cpMax == -1)
 781     nMax = ME_GetTextLength(editor);
 782   else
 783     nMax = chrg->cpMax;
 784
 785   /* when searching up, if cpMin < cpMax, then instead of searching
 786    * on [cpMin,cpMax], we search on [0,cpMin], otherwise, search on
 787    * [cpMax, cpMin]
 788    */
 789   if (!(flags & FR_DOWN))
 790   {
 791     int nSwap = nMax;
 792
 793     nMax = nMin;
 794     if (nMin < nSwap)
 795       nMin = 0;
 796     else
 797       nMin = nSwap;
 798   }
 799
 800   if (!nLen || nMin < 0 || nMax < 0 || nMax < nMin)
 801   {
 802     if (chrgText)
 803       chrgText->cpMin = chrgText->cpMax = -1;
 804     return -1;
 805   }
 806
 807   if (flags & FR_DOWN) /* Forward search */
 808   {
 809     nStart = nMin;
 810     item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
 811     if (!item)
 812     {
 813       if (chrgText)
 814         chrgText->cpMin = chrgText->cpMax = -1;
 815       return -1;
 816     }
 817
 818     para = ME_GetParagraph(item);
 819     while (item
 820            && para->member.para.nCharOfs + item->member.run.nCharOfs + nStart + nLen <= nMax)
 821     {
 822       ME_DisplayItem *pCurItem = item;
 823       int nCurStart = nStart;
 824       int nMatched = 0;
 825
 826       while (pCurItem && ME_CharCompare(pCurItem->member.run.strText->szData[nCurStart + nMatched], text[nMatched], (flags & FR_MATCHCASE)))
 827       {
 828         nMatched++;
 829         if (nMatched == nLen)
 830         {
 831           nStart += para->member.para.nCharOfs + item->member.run.nCharOfs;
 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 (nCurStart + nMatched == ME_StrLen(pCurItem->member.run.strText))
 841         {
 842           pCurItem = ME_FindItemFwd(pCurItem, diRun);
 843           para = ME_GetParagraph(pCurItem);
 844           nCurStart = -nMatched;
 845         }
 846       }
 847       nStart++;
 848       if (nStart == ME_StrLen(item->member.run.strText))
 849       {
 850         item = ME_FindItemFwd(item, diRun);
 851         para = ME_GetParagraph(item);
 852         nStart = 0;
 853       }
 854     }
 855   }
 856   else /* Backward search */
 857   {
 858     nEnd = nMax;
 859     item = ME_FindItemAtOffset(editor, diRun, nEnd, &nEnd);
 860     if (!item) {
 861       if (chrgText)
 862         chrgText->cpMin = chrgText->cpMax = -1;
 863       return -1;
 864     }
 865
 866     para = ME_GetParagraph(item);
 867
 868     while (item
 869            && para->member.para.nCharOfs + item->member.run.nCharOfs + nEnd - nLen >= nMin)
 870     {
 871       ME_DisplayItem *pCurItem = item;
 872       int nCurEnd = nEnd;
 873       int nMatched = 0;
 874
 875       while (ME_CharCompare(pCurItem->member.run.strText->szData[nCurEnd - nMatched - 1], text[nLen - nMatched - 1], (flags & FR_MATCHCASE)))
 876       {
 877         nMatched++;
 878         if (nMatched == nLen)
 879         {
 880           nStart = para->member.para.nCharOfs + item->member.run.nCharOfs + nCurEnd - nMatched;
 881           if (chrgText)
 882           {
 883             chrgText->cpMin = nStart;
 884             chrgText->cpMax = nStart + nLen;
 885           }
 886           TRACE("found at %d-%d\n", nStart, nStart + nLen);
 887           return nStart;
 888         }
 889         if (nCurEnd - nMatched == 0)
 890         {
 891           pCurItem = ME_FindItemBack(pCurItem, diRun);
 892           para = ME_GetParagraph(pCurItem);
 893           nCurEnd = ME_StrLen(pCurItem->member.run.strText) + nMatched;
 894         }
 895       }
 896       nEnd--;
 897       if (nEnd < 0)
 898       {
 899         item = ME_FindItemBack(item, diRun);
 900         para = ME_GetParagraph(item);
 901         nEnd = ME_StrLen(item->member.run.strText);
 902       }
 903     }
 904   }
 905   TRACE("not found\n");
 906   if (chrgText)
 907     chrgText->cpMin = chrgText->cpMax = -1;
 908   return -1;
 909 }
 910
 911
 912 static BOOL
 913 ME_KeyDown(ME_TextEditor *editor, WORD nKey)
 914 {
 915   BOOL ctrl_is_down = GetKeyState(VK_CONTROL) & 0x8000;
 916   BOOL shift_is_down = GetKeyState(VK_SHIFT) & 0x8000;
 917
 918   switch (nKey)
 919   {
 920     case VK_LEFT:
 921     case VK_RIGHT:
 922     case VK_UP:
 923     case VK_DOWN:
 924     case VK_HOME:
 925     case VK_END:
 926     case VK_PRIOR:
 927     case VK_NEXT:
 928       ME_ArrowKey(editor, nKey, shift_is_down, ctrl_is_down);
 929       return TRUE;
 930     case VK_BACK:
 931     case VK_DELETE:
 932       /* FIXME backspace and delete aren't the same, they act different wrt paragraph style of the merged paragraph */
 933       if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY)
 934         return FALSE;
 935       if (ME_IsSelection(editor))
 936         ME_DeleteSelection(editor);
 937       else if (nKey == VK_DELETE || ME_ArrowKey(editor, VK_LEFT, FALSE, FALSE))
 938         ME_DeleteTextAtCursor(editor, 1, 1);
 939       else
 940         return TRUE;
 941       ME_QueueInvalidateFromCursor(editor, 1);
 942       ME_UpdateRepaint(editor);
 943       ME_SendRequestResize(editor, FALSE);
 944       return TRUE;
 945
 946     default:
 947       if (ctrl_is_down)
 948       {
 949         if (nKey == 'W')
 950         {
 951           CHARFORMAT2W chf;
 952           char buf[2048];
 953
 954           ME_GetSelectionCharFormat(editor, &chf);
 955           ME_DumpStyleToBuf(&chf, buf);
 956           MessageBoxA(NULL, buf, "Style dump", MB_OK);
 957         }
 958         if (nKey == 'Q')
 959         {
 960           ME_CheckCharOffsets(editor);
 961         }
 962       }
 963   }
 964   return FALSE;
 965 }
 966
 967 static void ME_ShowContextMenu(ME_TextEditor *editor, int x, int y)
 968 {
 969   CHARRANGE selrange;
 970   HMENU menu;
 971   int seltype = 0;
 972   if(!editor->lpOleCallback)
 973     return;
 974   ME_GetSelection(editor, (int *)&selrange.cpMin, (int *)&selrange.cpMax);
 975   if(selrange.cpMin == selrange.cpMax)
 976     seltype |= SEL_EMPTY;
 977   else
 978   {
 979     /* FIXME: Handle objects */
 980     seltype |= SEL_TEXT;
 981     if(selrange.cpMax-selrange.cpMin > 1)
 982       seltype |= SEL_MULTICHAR;
 983   }
 984   if(SUCCEEDED(IRichEditOleCallback_GetContextMenu(editor->lpOleCallback, seltype, NULL, &selrange, &menu)))
 985   {
 986     TrackPopupMenu(menu, TPM_LEFTALIGN | TPM_RIGHTBUTTON, x, y, 0, GetParent(editor->hWnd), NULL);
 987     DestroyMenu(menu);
 988   }
 989 }
 990
 991 ME_TextEditor *ME_MakeEditor(HWND hWnd) {
 992   ME_TextEditor *ed = ALLOC_OBJ(ME_TextEditor);
 993   HDC hDC;
 994   int i;
 995   ed->hWnd = hWnd;
 996   ed->bEmulateVersion10 = FALSE;
 997   ed->pBuffer = ME_MakeText();
 998   hDC = GetDC(hWnd);
 999   ME_MakeFirstParagraph(hDC, ed->pBuffer);
1000   ReleaseDC(hWnd, hDC);
1001   ed->bCaretShown = FALSE;
1002   ed->nCursors = 3;
1003   ed->pCursors = ALLOC_N_OBJ(ME_Cursor, ed->nCursors);
1004   ed->pCursors[0].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
1005   ed->pCursors[0].nOffset = 0;
1006   ed->pCursors[1].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
1007   ed->pCursors[1].nOffset = 0;
1008   ed->nLastTotalLength = ed->nTotalLength = 0;
1009   ed->nUDArrowX = -1;
1010   ed->nSequence = 0;
1011   ed->rgbBackColor = -1;
1012   ed->hbrBackground = GetSysColorBrush(COLOR_WINDOW);
1013   ed->bCaretAtEnd = FALSE;
1014   ed->nEventMask = 0;
1015   ed->nModifyStep = 0;
1016   ed->pUndoStack = ed->pRedoStack = NULL;
1017   ed->nUndoMode = umAddToUndo;
1018   ed->nParagraphs = 1;
1019   ed->nLastSelStart = ed->nLastSelEnd = 0;
1020   ed->nScrollPosY = 0;
1021   ed->nZoomNumerator = ed->nZoomDenominator = 0;
1022   ed->bRedraw = TRUE;
1023   ed->nInvalidOfs = -1;
1024   ed->pfnWordBreak = NULL;
1025   ed->lpOleCallback = NULL;
1026   ed->mode = TM_RICHTEXT | TM_MULTILEVELUNDO | TM_MULTICODEPAGE;
1027   GetClientRect(hWnd, &ed->rcFormat);
1028   for (i=0; i<HFONT_CACHE_SIZE; i++)
1029   {
1030     ed->pFontCache[i].nRefs = 0;
1031     ed->pFontCache[i].nAge = 0;
1032     ed->pFontCache[i].hFont = NULL;
1033   }
1034   ME_CheckCharOffsets(ed);
1035   return ed;
1036 }
1037
1038 typedef struct tagME_GlobalDestStruct
1039 {
1040   HGLOBAL hData;
1041   int nLength;
1042 } ME_GlobalDestStruct;
1043
1044 static DWORD CALLBACK ME_ReadFromHGLOBALUnicode(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
1045 {
1046   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
1047   int i;
1048   WORD *pSrc, *pDest;
1049
1050   cb = cb >> 1;
1051   pDest = (WORD *)lpBuff;
1052   pSrc = (WORD *)GlobalLock(pData->hData);
1053   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
1054     pDest[i] = pSrc[pData->nLength+i];
1055   }
1056   pData->nLength += i;
1057   *pcb = 2*i;
1058   GlobalUnlock(pData->hData);
1059   return 0;
1060 }
1061
1062 static DWORD CALLBACK ME_ReadFromHGLOBALRTF(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
1063 {
1064   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
1065   int i;
1066   BYTE *pSrc, *pDest;
1067
1068   pDest = lpBuff;
1069   pSrc = (BYTE *)GlobalLock(pData->hData);
1070   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
1071     pDest[i] = pSrc[pData->nLength+i];
1072   }
1073   pData->nLength += i;
1074   *pcb = i;
1075   GlobalUnlock(pData->hData);
1076   return 0;
1077 }
1078
1079
1080 void ME_DestroyEditor(ME_TextEditor *editor)
1081 {
1082   ME_DisplayItem *pFirst = editor->pBuffer->pFirst;
1083   ME_DisplayItem *p = pFirst, *pNext = NULL;
1084   int i;
1085
1086   ME_ClearTempStyle(editor);
1087   ME_EmptyUndoStack(editor);
1088   while(p) {
1089     pNext = p->next;
1090     ME_DestroyDisplayItem(p);
1091     p = pNext;
1092   }
1093   ME_ReleaseStyle(editor->pBuffer->pDefaultStyle);
1094   for (i=0; i<HFONT_CACHE_SIZE; i++)
1095   {
1096     if (editor->pFontCache[i].hFont)
1097       DeleteObject(editor->pFontCache[i].hFont);
1098   }
1099   DeleteObject(editor->hbrBackground);
1100   if(editor->lpOleCallback)
1101     IUnknown_Release(editor->lpOleCallback);
1102
1103   FREE_OBJ(editor);
1104 }
1105
1106 static const WCHAR wszClassName[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '2', '0', 'W', 0};
1107 static const WCHAR wszClassName50[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '5', '0', 'W', 0};
1108 static const WCHAR wszClassNameListBox[] = {'R','E','L','i','s','t','B','o','x','2','0','W', 0};
1109 static const WCHAR wszClassNameComboBox[] = {'R','E','C','o','m','b','o','B','o','x','2','0','W', 0};
1110
1111 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
1112 {
1113     TRACE("\n");
1114     switch (fdwReason)
1115     {
1116     case DLL_PROCESS_ATTACH:
1117       DisableThreadLibraryCalls(hinstDLL);
1118       me_heap = HeapCreate (0, 0x10000, 0);
1119       ME_RegisterEditorClass(hinstDLL);
1120       break;
1121
1122     case DLL_PROCESS_DETACH:
1123       UnregisterClassW(wszClassName, 0);
1124       UnregisterClassW(wszClassName50, 0);
1125       UnregisterClassA("RichEdit20A", 0);
1126       UnregisterClassA("RichEdit50A", 0);
1127       if (ME_ListBoxRegistered)
1128           UnregisterClassW(wszClassNameListBox, 0);
1129       if (ME_ComboBoxRegistered)
1130           UnregisterClassW(wszClassNameComboBox, 0);
1131       HeapDestroy (me_heap);
1132       me_heap = NULL;
1133       break;
1134     }
1135     return TRUE;
1136 }
1137
1138
1139 #define UNSUPPORTED_MSG(e) \
1140   case e: \
1141     FIXME(#e ": stub\n"); \
1142     return DefWindowProcW(hWnd, msg, wParam, lParam);
1143
1144 static const char * const edit_messages[] = {
1145   "EM_GETSEL",
1146   "EM_SETSEL",
1147   "EM_GETRECT",
1148   "EM_SETRECT",
1149   "EM_SETRECTNP",
1150   "EM_SCROLL",
1151   "EM_LINESCROLL",
1152   "EM_SCROLLCARET",
1153   "EM_GETMODIFY",
1154   "EM_SETMODIFY",
1155   "EM_GETLINECOUNT",
1156   "EM_LINEINDEX",
1157   "EM_SETHANDLE",
1158   "EM_GETHANDLE",
1159   "EM_GETTHUMB",
1160   "EM_UNKNOWN_BF",
1161   "EM_UNKNOWN_C0",
1162   "EM_LINELENGTH",
1163   "EM_REPLACESEL",
1164   "EM_UNKNOWN_C3",
1165   "EM_GETLINE",
1166   "EM_LIMITTEXT",
1167   "EM_CANUNDO",
1168   "EM_UNDO",
1169   "EM_FMTLINES",
1170   "EM_LINEFROMCHAR",
1171   "EM_UNKNOWN_CA",
1172   "EM_SETTABSTOPS",
1173   "EM_SETPASSWORDCHAR",
1174   "EM_EMPTYUNDOBUFFER",
1175   "EM_GETFIRSTVISIBLELINE",
1176   "EM_SETREADONLY",
1177   "EM_SETWORDBREAKPROC",
1178   "EM_GETWORDBREAKPROC",
1179   "EM_GETPASSWORDCHAR",
1180   "EM_SETMARGINS",
1181   "EM_GETMARGINS",
1182   "EM_GETLIMITTEXT",
1183   "EM_POSFROMCHAR",
1184   "EM_CHARFROMPOS"
1185 };
1186
1187 static const char * const richedit_messages[] = {
1188   "EM_CANPASTE",
1189   "EM_DISPLAYBAND",
1190   "EM_EXGETSEL",
1191   "EM_EXLIMITTEXT",
1192   "EM_EXLINEFROMCHAR",
1193   "EM_EXSETSEL",
1194   "EM_FINDTEXT",
1195   "EM_FORMATRANGE",
1196   "EM_GETCHARFORMAT",
1197   "EM_GETEVENTMASK",
1198   "EM_GETOLEINTERFACE",
1199   "EM_GETPARAFORMAT",
1200   "EM_GETSELTEXT",
1201   "EM_HIDESELECTION",
1202   "EM_PASTESPECIAL",
1203   "EM_REQUESTRESIZE",
1204   "EM_SELECTIONTYPE",
1205   "EM_SETBKGNDCOLOR",
1206   "EM_SETCHARFORMAT",
1207   "EM_SETEVENTMASK",
1208   "EM_SETOLECALLBACK",
1209   "EM_SETPARAFORMAT",
1210   "EM_SETTARGETDEVICE",
1211   "EM_STREAMIN",
1212   "EM_STREAMOUT",
1213   "EM_GETTEXTRANGE",
1214   "EM_FINDWORDBREAK",
1215   "EM_SETOPTIONS",
1216   "EM_GETOPTIONS",
1217   "EM_FINDTEXTEX",
1218   "EM_GETWORDBREAKPROCEX",
1219   "EM_SETWORDBREAKPROCEX",
1220   "EM_SETUNDOLIMIT",
1221   "EM_UNKNOWN_USER_83",
1222   "EM_REDO",
1223   "EM_CANREDO",
1224   "EM_GETUNDONAME",
1225   "EM_GETREDONAME",
1226   "EM_STOPGROUPTYPING",
1227   "EM_SETTEXTMODE",
1228   "EM_GETTEXTMODE",
1229   "EM_AUTOURLDETECT",
1230   "EM_GETAUTOURLDETECT",
1231   "EM_SETPALETTE",
1232   "EM_GETTEXTEX",
1233   "EM_GETTEXTLENGTHEX",
1234   "EM_SHOWSCROLLBAR",
1235   "EM_SETTEXTEX",
1236   "EM_UNKNOWN_USER_98",
1237   "EM_UNKNOWN_USER_99",
1238   "EM_SETPUNCTUATION",
1239   "EM_GETPUNCTUATION",
1240   "EM_SETWORDWRAPMODE",
1241   "EM_GETWORDWRAPMODE",
1242   "EM_SETIMECOLOR",
1243   "EM_GETIMECOLOR",
1244   "EM_SETIMEOPTIONS",
1245   "EM_GETIMEOPTIONS",
1246   "EM_CONVPOSITION",
1247   "EM_UNKNOWN_USER_109",
1248   "EM_UNKNOWN_USER_110",
1249   "EM_UNKNOWN_USER_111",
1250   "EM_UNKNOWN_USER_112",
1251   "EM_UNKNOWN_USER_113",
1252   "EM_UNKNOWN_USER_114",
1253   "EM_UNKNOWN_USER_115",
1254   "EM_UNKNOWN_USER_116",
1255   "EM_UNKNOWN_USER_117",
1256   "EM_UNKNOWN_USER_118",
1257   "EM_UNKNOWN_USER_119",
1258   "EM_SETLANGOPTIONS",
1259   "EM_GETLANGOPTIONS",
1260   "EM_GETIMECOMPMODE",
1261   "EM_FINDTEXTW",
1262   "EM_FINDTEXTEXW",
1263   "EM_RECONVERSION",
1264   "EM_SETIMEMODEBIAS",
1265   "EM_GETIMEMODEBIAS"
1266 };
1267
1268 static const char *
1269 get_msg_name(UINT msg)
1270 {
1271   if (msg >= EM_GETSEL && msg <= EM_SETLIMITTEXT)
1272     return edit_messages[msg - EM_GETSEL];
1273   if (msg >= EM_CANPASTE && msg <= EM_GETIMEMODEBIAS)
1274     return richedit_messages[msg - EM_CANPASTE];
1275   return "";
1276 }
1277
1278 /******************************************************************
1279  *        RichEditANSIWndProc (RICHED20.10)
1280  */
1281 LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
1282   SCROLLINFO si;
1283   ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
1284
1285   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
1286         hWnd, msg, get_msg_name(msg), wParam, lParam);
1287
1288   switch(msg) {
1289
1290   UNSUPPORTED_MSG(EM_AUTOURLDETECT)
1291   UNSUPPORTED_MSG(EM_DISPLAYBAND)
1292   UNSUPPORTED_MSG(EM_EXLIMITTEXT)
1293   UNSUPPORTED_MSG(EM_FINDWORDBREAK)
1294   UNSUPPORTED_MSG(EM_FMTLINES)
1295   UNSUPPORTED_MSG(EM_FORMATRANGE)
1296   UNSUPPORTED_MSG(EM_GETAUTOURLDETECT)
1297   UNSUPPORTED_MSG(EM_GETBIDIOPTIONS)
1298   UNSUPPORTED_MSG(EM_GETEDITSTYLE)
1299   UNSUPPORTED_MSG(EM_GETIMECOMPMODE)
1300   /* UNSUPPORTED_MSG(EM_GETIMESTATUS) missing in Wine headers */
1301   UNSUPPORTED_MSG(EM_GETLANGOPTIONS)
1302   UNSUPPORTED_MSG(EM_GETLIMITTEXT)
1303   UNSUPPORTED_MSG(EM_GETLINE)
1304   /* UNSUPPORTED_MSG(EM_GETOLEINTERFACE) separate stub */
1305   UNSUPPORTED_MSG(EM_GETPASSWORDCHAR)
1306   UNSUPPORTED_MSG(EM_GETREDONAME)
1307   UNSUPPORTED_MSG(EM_GETTEXTMODE)
1308   UNSUPPORTED_MSG(EM_GETTYPOGRAPHYOPTIONS)
1309   UNSUPPORTED_MSG(EM_GETUNDONAME)
1310   UNSUPPORTED_MSG(EM_GETWORDBREAKPROCEX)
1311   UNSUPPORTED_MSG(EM_HIDESELECTION)
1312   UNSUPPORTED_MSG(EM_LIMITTEXT) /* also known as EM_SETLIMITTEXT */
1313   UNSUPPORTED_MSG(EM_PASTESPECIAL)
1314   UNSUPPORTED_MSG(EM_SCROLL)
1315   UNSUPPORTED_MSG(EM_SELECTIONTYPE)
1316   UNSUPPORTED_MSG(EM_SETBIDIOPTIONS)
1317   UNSUPPORTED_MSG(EM_SETEDITSTYLE)
1318   UNSUPPORTED_MSG(EM_SETFONTSIZE)
1319   UNSUPPORTED_MSG(EM_SETLANGOPTIONS)
1320   UNSUPPORTED_MSG(EM_SETPALETTE)
1321   UNSUPPORTED_MSG(EM_SETPASSWORDCHAR)
1322   UNSUPPORTED_MSG(EM_SETSCROLLPOS)
1323   UNSUPPORTED_MSG(EM_SETTABSTOPS)
1324   UNSUPPORTED_MSG(EM_SETTARGETDEVICE)
1325   UNSUPPORTED_MSG(EM_SETTYPOGRAPHYOPTIONS)
1326   UNSUPPORTED_MSG(EM_SETUNDOLIMIT)
1327   UNSUPPORTED_MSG(EM_SETWORDBREAKPROCEX)
1328   UNSUPPORTED_MSG(EM_SHOWSCROLLBAR)
1329   UNSUPPORTED_MSG(WM_SETFONT)
1330   UNSUPPORTED_MSG(WM_STYLECHANGING)
1331   UNSUPPORTED_MSG(WM_STYLECHANGED)
1332 /*  UNSUPPORTED_MSG(WM_UNICHAR) FIXME missing in Wine headers */
1333
1334 /* Messages specific to Richedit controls */
1335
1336   case EM_STREAMIN:
1337    return ME_StreamIn(editor, wParam, (EDITSTREAM*)lParam);
1338   case EM_STREAMOUT:
1339    return ME_StreamOut(editor, wParam, (EDITSTREAM *)lParam);
1340   case WM_GETDLGCODE:
1341   {
1342     UINT code = DLGC_WANTCHARS|DLGC_WANTARROWS;
1343     if (GetWindowLongW(hWnd, GWL_STYLE)&ES_WANTRETURN)
1344       code |= 0; /* FIXME what can we do here ? ask for messages and censor them ? */
1345     return code;
1346   }
1347   case WM_NCCREATE:
1348   {
1349     CREATESTRUCTW *pcs = (CREATESTRUCTW *)lParam;
1350     TRACE("WM_NCCREATE: style 0x%08lx\n", pcs->style);
1351     editor = ME_MakeEditor(hWnd);
1352     SetWindowLongW(hWnd, 0, (long)editor);
1353     pcs = 0; /* ignore */
1354     return TRUE;
1355   }
1356   case EM_EMPTYUNDOBUFFER:
1357     ME_EmptyUndoStack(editor);
1358     return 0;
1359   case EM_GETSEL:
1360   {
1361     /* Note: wParam/lParam can be NULL */
1362     UINT from, to;
1363     PUINT pfrom = wParam ? (PUINT)wParam : &from;
1364     PUINT pto = lParam ? (PUINT)lParam : &to;
1365     ME_GetSelection(editor, (int *)pfrom, (int *)pto);
1366     if ((*pfrom|*pto) & 0xFFFF0000)
1367       return -1;
1368     return MAKELONG(*pfrom,*pto);
1369   }
1370   case EM_EXGETSEL:
1371   {
1372     CHARRANGE *pRange = (CHARRANGE *)lParam;
1373     ME_GetSelection(editor, (int *)&pRange->cpMin, (int *)&pRange->cpMax);
1374     TRACE("EM_EXGETSEL = (%ld,%ld)\n", pRange->cpMin, pRange->cpMax);
1375     return 0;
1376   }
1377   case EM_CANUNDO:
1378     return editor->pUndoStack != NULL;
1379   case EM_CANREDO:
1380     return editor->pRedoStack != NULL;
1381   case WM_UNDO: /* FIXME: actually not the same */
1382   case EM_UNDO:
1383     ME_Undo(editor);
1384     return 0;
1385   case EM_REDO:
1386     ME_Redo(editor);
1387     return 0;
1388   case EM_GETOPTIONS:
1389   {
1390     /* these flags are equivalent to the ES_* counterparts */
1391     DWORD mask = ECO_VERTICAL | ECO_AUTOHSCROLL | ECO_AUTOVSCROLL |
1392                  ECO_NOHIDESEL | ECO_READONLY | ECO_WANTRETURN;
1393     DWORD settings = GetWindowLongW(hWnd, GWL_STYLE) & mask;
1394
1395     return settings;
1396   }
1397   case EM_SETOPTIONS:
1398   {
1399     /* these flags are equivalent to ES_* counterparts
1400      * ECO_READONLY is already implemented in the code, only requires
1401      * setting the bit to work
1402      */
1403     DWORD mask = ECO_VERTICAL | ECO_AUTOHSCROLL | ECO_AUTOVSCROLL |
1404                  ECO_NOHIDESEL | ECO_READONLY | ECO_WANTRETURN;
1405     DWORD raw = GetWindowLongW(hWnd, GWL_STYLE);
1406     DWORD settings = mask & raw;
1407
1408     switch(wParam)
1409     {
1410       case ECOOP_SET:
1411         settings = lParam;
1412         break;
1413       case ECOOP_OR:
1414         settings |= lParam;
1415         break;
1416       case ECOOP_AND:
1417         settings &= lParam;
1418         break;
1419       case ECOOP_XOR:
1420         settings ^= lParam;
1421     }
1422     SetWindowLongW(hWnd, GWL_STYLE, (raw & ~mask) | (settings & mask));
1423
1424     if (lParam & ECO_AUTOWORDSELECTION)
1425       FIXME("ECO_AUTOWORDSELECTION not implemented yet!\n");
1426     if (lParam & ECO_SELECTIONBAR)
1427       FIXME("ECO_SELECTIONBAR not implemented yet!\n");
1428     if (lParam & ECO_VERTICAL)
1429       FIXME("ECO_VERTICAL not implemented yet!\n");
1430     if (lParam & ECO_AUTOHSCROLL)
1431       FIXME("ECO_AUTOHSCROLL not implemented yet!\n");
1432     if (lParam & ECO_AUTOVSCROLL)
1433       FIXME("ECO_AUTOVSCROLL not implemented yet!\n");
1434     if (lParam & ECO_NOHIDESEL)
1435       FIXME("ECO_NOHIDESEL not implemented yet!\n");
1436     if (lParam & ECO_WANTRETURN)
1437       FIXME("ECO_WANTRETURN not implemented yet!\n");
1438
1439     return settings;
1440   }
1441   case EM_SETSEL:
1442   {
1443     ME_InvalidateSelection(editor);
1444     ME_SetSelection(editor, wParam, lParam);
1445     ME_InvalidateSelection(editor);
1446     ME_SendSelChange(editor);
1447     return 0;
1448   }
1449   case EM_EXSETSEL:
1450   {
1451     CHARRANGE *pRange = (CHARRANGE *)lParam;
1452     TRACE("EM_EXSETSEL (%ld,%ld)\n", pRange->cpMin, pRange->cpMax);
1453     ME_InvalidateSelection(editor);
1454     ME_SetSelection(editor, pRange->cpMin, pRange->cpMax);
1455     ME_InvalidateSelection(editor);
1456     ME_SendSelChange(editor);
1457     return 0;
1458   }
1459   case EM_SETTEXTEX:
1460   {
1461     LPWSTR wszText = (LPWSTR)lParam;
1462     SETTEXTEX *pStruct = (SETTEXTEX *)wParam;
1463     size_t len = lstrlenW(wszText);
1464     int from, to;
1465     ME_Style *style;
1466     TRACE("EM_SETTEXEX - %s, flags %d, cp %d\n", debugstr_w(wszText), (int)pStruct->flags, pStruct->codepage);
1467     if (pStruct->codepage != 1200) {
1468       FIXME("EM_SETTEXTEX only supports unicode right now!\n");
1469       return 0;
1470     }
1471     /* FIXME: this should support RTF strings too, according to MSDN */
1472     if (pStruct->flags & ST_SELECTION) {
1473       ME_GetSelection(editor, &from, &to);
1474       style = ME_GetSelectionInsertStyle(editor);
1475       ME_InternalDeleteText(editor, from, to - from);
1476       ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1477       ME_ReleaseStyle(style);
1478     }
1479     else {
1480       ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1481       ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
1482       len = 1;
1483     }
1484     ME_CommitUndo(editor);
1485     if (!(pStruct->flags & ST_KEEPUNDO))
1486       ME_EmptyUndoStack(editor);
1487     ME_UpdateRepaint(editor);
1488     return len;
1489   }
1490   case EM_SETBKGNDCOLOR:
1491   {
1492     LRESULT lColor = ME_GetBackColor(editor);
1493     if (editor->rgbBackColor != -1)
1494       DeleteObject(editor->hbrBackground);
1495     if (wParam)
1496     {
1497       editor->rgbBackColor = -1;
1498       editor->hbrBackground = GetSysColorBrush(COLOR_WINDOW);
1499     }
1500     else
1501     {
1502       editor->rgbBackColor = lParam;
1503       editor->hbrBackground = CreateSolidBrush(editor->rgbBackColor);
1504     }
1505     if (editor->bRedraw)
1506     {
1507       InvalidateRect(hWnd, NULL, TRUE);
1508       UpdateWindow(hWnd);
1509     }
1510     return lColor;
1511   }
1512   case EM_GETMODIFY:
1513     return editor->nModifyStep == 0 ? 0 : 1;
1514   case EM_SETMODIFY:
1515   {
1516     if (wParam)
1517       editor->nModifyStep = 0x80000000;
1518     else
1519       editor->nModifyStep = 0;
1520
1521     return 0;
1522   }
1523   case EM_SETREADONLY:
1524   {
1525     long nStyle = GetWindowLongW(hWnd, GWL_STYLE);
1526     if (wParam)
1527       nStyle |= ES_READONLY;
1528     else
1529       nStyle &= ~ES_READONLY;
1530     SetWindowLongW(hWnd, GWL_STYLE, nStyle);
1531     return 0;
1532   }
1533   case EM_SETEVENTMASK:
1534   {
1535     DWORD nOldMask = editor->nEventMask;
1536
1537     editor->nEventMask = lParam;
1538     return nOldMask;
1539   }
1540   case EM_GETEVENTMASK:
1541     return editor->nEventMask;
1542   case EM_SETCHARFORMAT:
1543   {
1544     CHARFORMAT2W buf, *p;
1545     BOOL bRepaint = TRUE;
1546     p = ME_ToCF2W(&buf, (CHARFORMAT2W *)lParam);
1547     if (!wParam || (editor->mode & TM_PLAINTEXT))
1548       ME_SetDefaultCharFormat(editor, p);
1549     else if (wParam == (SCF_WORD | SCF_SELECTION))
1550       FIXME("EM_SETCHARFORMAT: word selection not supported\n");
1551     else if (wParam == SCF_ALL)
1552       ME_SetCharFormat(editor, 0, ME_GetTextLength(editor), p);
1553     else {
1554       int from, to;
1555       ME_GetSelection(editor, &from, &to);
1556       bRepaint = (from != to);
1557       ME_SetSelectionCharFormat(editor, p);
1558     }
1559     ME_CommitUndo(editor);
1560     if (bRepaint)
1561       ME_UpdateRepaint(editor);
1562     return 0;
1563   }
1564   case EM_GETCHARFORMAT:
1565   {
1566     CHARFORMAT2W tmp, *dst = (CHARFORMAT2W *)lParam;
1567     if (dst->cbSize != sizeof(CHARFORMATA) &&
1568         dst->cbSize != sizeof(CHARFORMATW) &&
1569         dst->cbSize != sizeof(CHARFORMAT2A) &&
1570         dst->cbSize != sizeof(CHARFORMAT2W))
1571       return 0;
1572     tmp.cbSize = sizeof(tmp);
1573     if (!wParam)
1574       ME_GetDefaultCharFormat(editor, &tmp);
1575     else
1576       ME_GetSelectionCharFormat(editor, &tmp);
1577     ME_CopyToCFAny(dst, &tmp);
1578     return tmp.dwMask;
1579   }
1580   case EM_SETPARAFORMAT:
1581     ME_SetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1582     ME_UpdateRepaint(editor);
1583     ME_CommitUndo(editor);
1584     return 0;
1585   case EM_GETPARAFORMAT:
1586     ME_GetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1587     return 0;
1588   case EM_GETFIRSTVISIBLELINE:
1589   {
1590     ME_DisplayItem *p = editor->pBuffer->pFirst;
1591     int y = editor->nScrollPosY;
1592     int ypara = 0;
1593     int count = 0;
1594     int ystart, yend;
1595     while(p) {
1596       p = ME_FindItemFwd(p, diStartRowOrParagraphOrEnd);
1597       if (p->type == diTextEnd)
1598         break;
1599       if (p->type == diParagraph) {
1600         ypara = p->member.para.nYPos;
1601         continue;
1602       }
1603       ystart = ypara + p->member.row.nYPos;
1604       yend = ystart + p->member.row.nHeight;
1605       if (y < yend) {
1606         break;
1607       }
1608       count++;
1609     }
1610     return count;
1611   }
1612   case EM_LINESCROLL:
1613   {
1614     int nPos = editor->nScrollPosY, nEnd= editor->nTotalLength - editor->sizeWindow.cy;
1615     nPos += 8 * lParam; /* FIXME follow the original */
1616     if (nPos>=nEnd)
1617       nPos = nEnd;
1618     if (nPos<0)
1619       nPos = 0;
1620     if (nPos != editor->nScrollPosY) {
1621       int dy = editor->nScrollPosY - nPos;
1622       editor->nScrollPosY = nPos;
1623       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1624       if (editor->bRedraw)
1625       {
1626         ScrollWindow(hWnd, 0, dy, NULL, NULL);
1627         UpdateWindow(hWnd);
1628       }
1629     }
1630     return TRUE; /* Should return false if a single line richedit control */
1631   }
1632   case WM_CLEAR:
1633   {
1634     int from, to;
1635     ME_GetSelection(editor, &from, &to);
1636     ME_InternalDeleteText(editor, from, to-from);
1637     ME_CommitUndo(editor);
1638     ME_UpdateRepaint(editor);
1639     return 0;
1640   }
1641   case EM_REPLACESEL:
1642   {
1643     int from, to;
1644     ME_Style *style;
1645     LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
1646     size_t len = lstrlenW(wszText);
1647     TRACE("EM_REPLACESEL - %s\n", debugstr_w(wszText));
1648
1649     ME_GetSelection(editor, &from, &to);
1650     style = ME_GetSelectionInsertStyle(editor);
1651     ME_InternalDeleteText(editor, from, to-from);
1652     ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1653     ME_ReleaseStyle(style);
1654     ME_EndToUnicode(hWnd, wszText);
1655     /* drop temporary style if line end */
1656     /* FIXME question: does abc\n mean: put abc, clear temp style, put \n? (would require a change) */
1657     if (len>0 && wszText[len-1] == '\n')
1658       ME_ClearTempStyle(editor);
1659
1660     ME_CommitUndo(editor);
1661     if (!wParam)
1662       ME_EmptyUndoStack(editor);
1663     ME_UpdateRepaint(editor);
1664     return 0;
1665   }
1666   case EM_SCROLLCARET:
1667   {
1668     int top, bottom; /* row's edges relative to document top */
1669     ME_DisplayItem *para, *row;
1670
1671     row = ME_RowStart(editor->pCursors[0].pRun);
1672     para = ME_GetParagraph(row);
1673     top = para->member.para.nYPos + row->member.row.nYPos;
1674     bottom = top + row->member.row.nHeight;
1675
1676     if ((top < editor->nScrollPosY)
1677         || (editor->nScrollPosY + editor->sizeWindow.cy < bottom))
1678     {
1679       int dy;
1680       int prevScrollPosY = editor->nScrollPosY;
1681
1682       if (top < editor->nScrollPosY) /* caret above window */
1683         editor->nScrollPosY = top;
1684       else /* caret below window */
1685         editor->nScrollPosY = bottom - editor->sizeWindow.cy;
1686
1687       if (editor->nScrollPosY < 0)
1688         editor->nScrollPosY = 0;
1689
1690       dy = prevScrollPosY - editor->nScrollPosY;
1691       SetScrollPos(hWnd, SB_VERT, editor->nScrollPosY, TRUE);
1692       if (editor->bRedraw)
1693       {
1694         ScrollWindow(hWnd, 0, dy, NULL, NULL);
1695         UpdateWindow(hWnd);
1696       }
1697     }
1698
1699     return 0;
1700   }
1701   case WM_SETTEXT:
1702   {
1703     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1704     if (lParam)
1705     {
1706       TRACE("WM_SETTEXT lParam==%lx\n",lParam);
1707       if (!IsWindowUnicode(hWnd) && !strncmp((char *)lParam, "{\\rtf1", 6))
1708       {
1709         /* Undocumented: WM_SETTEXT supports RTF text */
1710         ME_StreamInRTFString(editor, 0, (char *)lParam);
1711       }
1712       else
1713       {
1714         LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
1715         TRACE("WM_SETTEXT - %s\n", debugstr_w(wszText)); /* debugstr_w() */
1716         if (lstrlenW(wszText) > 0)
1717         {
1718           /* uses default style! */
1719           ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
1720         }
1721         ME_EndToUnicode(hWnd, wszText);
1722       }
1723     }
1724     else
1725       TRACE("WM_SETTEXT - NULL\n");
1726     ME_CommitUndo(editor);
1727     ME_EmptyUndoStack(editor);
1728     ME_SetSelection(editor, 0, 0);
1729     ME_UpdateRepaint(editor);
1730     return 0;
1731   }
1732   case EM_CANPASTE:
1733   {
1734     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1735     if (IsClipboardFormatAvailable(nRTFFormat))
1736       return TRUE;
1737     if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1738       return TRUE;
1739     return FALSE;
1740   }
1741   case WM_PASTE:
1742   {
1743     DWORD dwFormat = 0;
1744     EDITSTREAM es;
1745     ME_GlobalDestStruct gds;
1746     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1747     UINT cf = 0;
1748
1749     if (IsClipboardFormatAvailable(nRTFFormat))
1750       cf = nRTFFormat, dwFormat = SF_RTF;
1751     else if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1752       cf = CF_UNICODETEXT, dwFormat = SF_TEXT|SF_UNICODE;
1753     else
1754       return 0;
1755
1756     if (!OpenClipboard(hWnd))
1757       return 0;
1758     gds.hData = GetClipboardData(cf);
1759     gds.nLength = 0;
1760     es.dwCookie = (DWORD)&gds;
1761     es.pfnCallback = dwFormat == SF_RTF ? ME_ReadFromHGLOBALRTF : ME_ReadFromHGLOBALUnicode;
1762     ME_StreamIn(editor, dwFormat|SFF_SELECTION, &es);
1763
1764     CloseClipboard();
1765     return 0;
1766   }
1767   case WM_CUT:
1768   case WM_COPY:
1769   {
1770     LPDATAOBJECT dataObj;
1771     CHARRANGE range;
1772     HRESULT hr;
1773     ME_GetSelection(editor, (int*)&range.cpMin, (int*)&range.cpMax);
1774     hr = ME_GetDataObject(editor, &range, &dataObj);
1775     if(SUCCEEDED(hr)) {
1776         hr = OleSetClipboard(dataObj);
1777         IDataObject_Release(dataObj);
1778     }
1779     if (SUCCEEDED(hr) && msg == WM_CUT)
1780     {
1781       ME_InternalDeleteText(editor, range.cpMin, range.cpMax-range.cpMin);
1782       ME_CommitUndo(editor);
1783       ME_UpdateRepaint(editor);
1784     }
1785     return 0;
1786   }
1787   case WM_GETTEXTLENGTH:
1788     return ME_GetTextLength(editor);
1789   case EM_GETTEXTLENGTHEX:
1790     return ME_GetTextLengthEx(editor, (GETTEXTLENGTHEX *)wParam);
1791   case WM_GETTEXT:
1792   {
1793     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1794     tr.chrg.cpMin = 0;
1795     tr.chrg.cpMax = wParam-1;
1796     tr.lpstrText = (WCHAR *)lParam;
1797     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1798   }
1799   case EM_GETTEXTEX:
1800   {
1801     GETTEXTEX *ex = (GETTEXTEX*)wParam;
1802     int nStart, nCount;
1803
1804     if (ex->flags & ~(GT_SELECTION | GT_USECRLF))
1805       FIXME("GETTEXTEX flags 0x%08lx not supported\n", ex->flags & ~(GT_SELECTION | GT_USECRLF));
1806
1807     if (ex->flags & GT_SELECTION)
1808     {
1809       ME_GetSelection(editor, &nStart, &nCount);
1810       nCount -= nStart;
1811       nCount = min(nCount, ex->cb - 1);
1812     }
1813     else
1814     {
1815       nStart = 0;
1816       nCount = ex->cb - 1;
1817     }
1818     if (ex->codepage == 1200 || IsWindowUnicode(hWnd))
1819     {
1820       nCount = min(nCount, ex->cb / sizeof(WCHAR) - 1);
1821       return ME_GetTextW(editor, (LPWSTR)lParam, nStart, nCount, ex->flags & GT_USECRLF);
1822     }
1823     else
1824     {
1825       /* potentially each char may be a CR, why calculate the exact value with O(N) when
1826         we can just take a bigger buffer? :) */
1827       int crlfmul = (ex->flags & GT_USECRLF) ? 2 : 1;
1828       LPWSTR buffer = HeapAlloc(GetProcessHeap(), 0, (crlfmul*nCount + 1) * sizeof(WCHAR));
1829       DWORD buflen = ex->cb;
1830       LRESULT rc;
1831       DWORD flags = 0;
1832
1833       buflen = ME_GetTextW(editor, buffer, nStart, nCount, ex->flags & GT_USECRLF);
1834       rc = WideCharToMultiByte(ex->codepage, flags, buffer, buflen, (LPSTR)lParam, ex->cb, ex->lpDefaultChar, ex->lpUsedDefaultChar);
1835
1836       HeapFree(GetProcessHeap(),0,buffer);
1837       return rc;
1838     }
1839   }
1840   case EM_GETSELTEXT:
1841   {
1842     int from, to;
1843     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1844     ME_GetSelection(editor, &from, &to);
1845     tr.chrg.cpMin = from;
1846     tr.chrg.cpMax = to;
1847     tr.lpstrText = (WCHAR *)lParam;
1848     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1849   }
1850   case EM_GETSCROLLPOS:
1851   {
1852       POINT *point = (POINT *)lParam;
1853       point->x = 0; /* FIXME side scrolling not implemented */
1854       point->y = editor->nScrollPosY;
1855       return 1;
1856   }
1857   case EM_GETTEXTRANGE:
1858   {
1859     TEXTRANGEW *rng = (TEXTRANGEW *)lParam;
1860     TRACE("EM_GETTEXTRANGE min=%ld max=%ld unicode=%d emul1.0=%d length=%d\n",
1861       rng->chrg.cpMin, rng->chrg.cpMax, IsWindowUnicode(hWnd),
1862       editor->bEmulateVersion10, ME_GetTextLength(editor));
1863     if (IsWindowUnicode(hWnd))
1864       return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, editor->bEmulateVersion10);
1865     else
1866     {
1867       int nLen = rng->chrg.cpMax-rng->chrg.cpMin;
1868       WCHAR *p = ALLOC_N_OBJ(WCHAR, nLen+1);
1869       int nChars = ME_GetTextW(editor, p, rng->chrg.cpMin, nLen, editor->bEmulateVersion10);
1870       /* FIXME this is a potential security hole (buffer overrun)
1871          if you know more about wchar->mbyte conversion please explain
1872       */
1873       WideCharToMultiByte(CP_ACP, 0, p, nChars+1, (char *)rng->lpstrText, nLen+1, NULL, NULL);
1874       FREE_OBJ(p);
1875       return nChars;
1876     }
1877   }
1878   case EM_GETLINECOUNT:
1879   {
1880     ME_DisplayItem *item = editor->pBuffer->pFirst->next;
1881     int nRows = 0;
1882
1883     while (item != editor->pBuffer->pLast)
1884     {
1885       assert(item->type == diParagraph);
1886       nRows += item->member.para.nRows;
1887       item = item->member.para.next_para;
1888     }
1889     TRACE("EM_GETLINECOUNT: nRows==%d\n", nRows);
1890     return max(1, nRows);
1891   }
1892   case EM_LINEFROMCHAR:
1893   {
1894     if (wParam == -1)
1895       return ME_RowNumberFromCharOfs(editor, ME_GetCursorOfs(editor, 1));
1896     else
1897       return ME_RowNumberFromCharOfs(editor, wParam);
1898   }
1899   case EM_EXLINEFROMCHAR:
1900   {
1901     return ME_RowNumberFromCharOfs(editor, lParam);
1902   }
1903   case EM_LINEINDEX:
1904   {
1905     ME_DisplayItem *item, *para;
1906     int nCharOfs;
1907
1908     if (wParam == -1)
1909       item = ME_FindItemBack(editor->pCursors[0].pRun, diStartRow);
1910     else
1911       item = ME_FindRowWithNumber(editor, wParam);
1912     if (!item)
1913       return -1;
1914     para = ME_GetParagraph(item);
1915     item = ME_FindItemFwd(item, diRun);
1916     nCharOfs = para->member.para.nCharOfs + item->member.run.nCharOfs;
1917     TRACE("EM_LINEINDEX: nCharOfs==%d\n", nCharOfs);
1918     return nCharOfs;
1919   }
1920   case EM_LINELENGTH:
1921   {
1922     ME_DisplayItem *item, *item_end;
1923     int nChars = 0, nThisLineOfs = 0, nNextLineOfs = 0;
1924
1925     if (wParam > ME_GetTextLength(editor))
1926       return 0;
1927     if (wParam == -1)
1928     {
1929       FIXME("EM_LINELENGTH: returning number of unselected characters on lines with selection unsupported.\n");
1930       return 0;
1931     }
1932     item = ME_FindItemAtOffset(editor, diRun, wParam, NULL);
1933     item = ME_RowStart(item);
1934     nThisLineOfs = ME_CharOfsFromRunOfs(editor, ME_FindItemFwd(item, diRun), 0);
1935     item_end = ME_FindItemFwd(item, diStartRow);
1936     if (item_end)
1937       nNextLineOfs = ME_CharOfsFromRunOfs(editor, ME_FindItemFwd(item_end, diRun), 0);
1938     else
1939       nNextLineOfs = ME_FindItemFwd(item, diParagraphOrEnd)->member.para.nCharOfs
1940        - (editor->bEmulateVersion10?2:1);
1941     nChars = nNextLineOfs - nThisLineOfs;
1942     TRACE("EM_LINELENGTH(%d)==%d\n",wParam, nChars);
1943     return nChars;
1944   }
1945   case EM_FINDTEXT:
1946   {
1947     FINDTEXTA *ft = (FINDTEXTA *)lParam;
1948     int nChars = MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, NULL, 0);
1949     WCHAR *tmp;
1950
1951     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
1952       MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, tmp, nChars);
1953     return ME_FindText(editor, wParam, &ft->chrg, tmp, NULL);
1954   }
1955   case EM_FINDTEXTEX:
1956   {
1957     FINDTEXTEXA *ex = (FINDTEXTEXA *)lParam;
1958     int nChars = MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, NULL, 0);
1959     WCHAR *tmp;
1960
1961     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
1962       MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, tmp, nChars);
1963     return ME_FindText(editor, wParam, &ex->chrg, tmp, &ex->chrgText);
1964   }
1965   case EM_FINDTEXTW:
1966   {
1967     FINDTEXTW *ft = (FINDTEXTW *)lParam;
1968     return ME_FindText(editor, wParam, &ft->chrg, ft->lpstrText, NULL);
1969   }
1970   case EM_FINDTEXTEXW:
1971   {
1972     FINDTEXTEXW *ex = (FINDTEXTEXW *)lParam;
1973     return ME_FindText(editor, wParam, &ex->chrg, ex->lpstrText, &ex->chrgText);
1974   }
1975   case EM_GETZOOM:
1976     if (!wParam || !lParam)
1977       return FALSE;
1978     *(int *)wParam = editor->nZoomNumerator;
1979     *(int *)lParam = editor->nZoomDenominator;
1980     return TRUE;
1981   case EM_SETZOOM:
1982     return ME_SetZoom(editor, wParam, lParam);
1983   case EM_CHARFROMPOS:
1984     return ME_CharFromPos(editor, ((POINTL *)lParam)->x, ((POINTL *)lParam)->y);
1985   case EM_POSFROMCHAR:
1986   {
1987     ME_DisplayItem *pRun;
1988     int nCharOfs, nOffset, nLength;
1989     POINTL pt = {0,0};
1990
1991     nCharOfs = wParam;
1992     /* detect which API version we're dealing with */
1993     if (wParam >= 0x40000)
1994         nCharOfs = lParam;
1995     nLength = ME_GetTextLength(editor);
1996
1997     if (nCharOfs < nLength) {
1998         ME_RunOfsFromCharOfs(editor, nCharOfs, &pRun, &nOffset);
1999         assert(pRun->type == diRun);
2000         pt.y = pRun->member.run.pt.y;
2001         pt.x = pRun->member.run.pt.x + ME_PointFromChar(editor, &pRun->member.run, nOffset);
2002         pt.y += ME_GetParagraph(pRun)->member.para.nYPos;
2003     } else {
2004         pt.x = 0;
2005         pt.y = editor->pBuffer->pLast->member.para.nYPos;
2006     }
2007     if (wParam >= 0x40000) {
2008         *(POINTL *)wParam = pt;
2009     }
2010     return MAKELONG( pt.x, pt.y );
2011   }
2012   case WM_CREATE:
2013     ME_CommitUndo(editor);
2014     ME_WrapMarkedParagraphs(editor);
2015     ME_MoveCaret(editor);
2016     return 0;
2017   case WM_DESTROY:
2018     ME_DestroyEditor(editor);
2019     SetWindowLongW(hWnd, 0, 0);
2020     return 0;
2021   case WM_LBUTTONDOWN:
2022     SetFocus(hWnd);
2023     ME_LButtonDown(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
2024     SetCapture(hWnd);
2025     break;
2026   case WM_MOUSEMOVE:
2027     if (GetCapture() == hWnd)
2028       ME_MouseMove(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
2029     break;
2030   case WM_LBUTTONUP:
2031     if (GetCapture() == hWnd)
2032       ReleaseCapture();
2033     break;
2034   case WM_LBUTTONDBLCLK:
2035     ME_SelectWord(editor);
2036     break;
2037   case WM_CONTEXTMENU:
2038     ME_ShowContextMenu(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
2039     break;
2040   case WM_PAINT:
2041     if (editor->bRedraw)
2042     {
2043       HDC hDC;
2044       PAINTSTRUCT ps;
2045
2046       hDC = BeginPaint(hWnd, &ps);
2047       ME_PaintContent(editor, hDC, FALSE, &ps.rcPaint);
2048       EndPaint(hWnd, &ps);
2049     }
2050     break;
2051   case WM_SETFOCUS:
2052     ME_ShowCaret(editor);
2053     ME_SendOldNotify(editor, EN_SETFOCUS);
2054     return 0;
2055   case WM_KILLFOCUS:
2056     ME_HideCaret(editor);
2057     ME_SendOldNotify(editor, EN_KILLFOCUS);
2058     return 0;
2059   case WM_ERASEBKGND:
2060   {
2061     if (editor->bRedraw)
2062     {
2063       HDC hDC = (HDC)wParam;
2064       RECT rc;
2065       if (GetUpdateRect(hWnd,&rc,TRUE))
2066       {
2067         FillRect(hDC, &rc, editor->hbrBackground);
2068       }
2069     }
2070     return 1;
2071   }
2072   case WM_COMMAND:
2073     TRACE("editor wnd command = %d\n", LOWORD(wParam));
2074     return 0;
2075   case WM_KEYDOWN:
2076     if (ME_KeyDown(editor, LOWORD(wParam)))
2077       return 0;
2078     goto do_default;
2079   case WM_CHAR:
2080   {
2081     WCHAR wstr = LOWORD(wParam);
2082
2083     switch (wstr)
2084     {
2085     case 3: /* Ctrl-C */
2086       SendMessageW(editor->hWnd, WM_COPY, 0, 0);
2087       return 0;
2088     }
2089
2090     if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY) {
2091       MessageBeep(MB_ICONERROR);
2092       return 0; /* FIXME really 0 ? */
2093     }
2094
2095     switch (wstr)
2096     {
2097     case 1: /* Ctrl-A */
2098       ME_SetSelection(editor, 0, -1);
2099       return 0;
2100     case 22: /* Ctrl-V */
2101       SendMessageW(editor->hWnd, WM_PASTE, 0, 0);
2102       return 0;
2103     case 24: /* Ctrl-X */
2104       SendMessageW(editor->hWnd, WM_CUT, 0, 0);
2105       return 0;
2106     case 25: /* Ctrl-Y */
2107       SendMessageW(editor->hWnd, EM_REDO, 0, 0);
2108       return 0;
2109     case 26: /* Ctrl-Z */
2110       SendMessageW(editor->hWnd, EM_UNDO, 0, 0);
2111       return 0;
2112     }
2113     if (((unsigned)wstr)>=' ' || wstr=='\r' || wstr=='\t') {
2114       /* FIXME maybe it would make sense to call EM_REPLACESEL instead ? */
2115       ME_Style *style = ME_GetInsertStyle(editor, 0);
2116       ME_SaveTempStyle(editor);
2117       ME_InsertTextFromCursor(editor, 0, &wstr, 1, style);
2118       ME_ReleaseStyle(style);
2119       ME_CommitUndo(editor);
2120       ME_UpdateRepaint(editor);
2121     }
2122     return 0;
2123   }
2124   case WM_VSCROLL:
2125   {
2126     int nPos = editor->nScrollPosY;
2127     si.cbSize = sizeof(SCROLLINFO);
2128     si.fMask = SIF_PAGE|SIF_POS|SIF_RANGE|SIF_TRACKPOS;
2129     GetScrollInfo(hWnd, SB_VERT, &si);
2130     switch(LOWORD(wParam)) {
2131     case SB_LINEUP:
2132       nPos -= 24; /* FIXME follow the original */
2133       if (nPos<0) nPos = 0;
2134       break;
2135     case SB_LINEDOWN:
2136     {
2137       int nEnd = editor->nTotalLength - editor->sizeWindow.cy;
2138       nPos += 24; /* FIXME follow the original */
2139       if (nPos>=nEnd) nPos = nEnd;
2140       break;
2141     }
2142     case SB_PAGEUP:
2143       nPos -= editor->sizeWindow.cy;
2144       if (nPos<0) nPos = 0;
2145       break;
2146     case SB_PAGEDOWN:
2147       nPos += editor->sizeWindow.cy;
2148       if (nPos>=editor->nTotalLength) nPos = editor->nTotalLength-1;
2149       break;
2150     case SB_THUMBTRACK:
2151     case SB_THUMBPOSITION:
2152       nPos = si.nTrackPos;
2153       break;
2154     }
2155     if (nPos != editor->nScrollPosY) {
2156       int dy = editor->nScrollPosY - nPos;
2157       editor->nScrollPosY = nPos;
2158       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
2159       if (editor->bRedraw)
2160       {
2161         ScrollWindow(hWnd, 0, dy, NULL, NULL);
2162         UpdateWindow(hWnd);
2163       }
2164     }
2165     break;
2166   }
2167   case WM_MOUSEWHEEL:
2168   {
2169     int gcWheelDelta = 0, nPos = editor->nScrollPosY, nEnd = editor->nTotalLength - editor->sizeWindow.cy;
2170     UINT pulScrollLines;
2171     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
2172     gcWheelDelta -= GET_WHEEL_DELTA_WPARAM(wParam);
2173     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
2174       nPos += pulScrollLines * (gcWheelDelta / WHEEL_DELTA) * 8; /* FIXME follow the original */
2175     if (nPos>=nEnd)
2176       nPos = nEnd;
2177     if (nPos<0)
2178       nPos = 0;
2179     if (nPos != editor->nScrollPosY) {
2180       int dy = editor->nScrollPosY - nPos;
2181       editor->nScrollPosY = nPos;
2182       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
2183       if (editor->bRedraw)
2184       {
2185         ScrollWindow(hWnd, 0, dy, NULL, NULL);
2186         UpdateWindow(hWnd);
2187       }
2188     }
2189     break;
2190   }
2191   case EM_GETRECT:
2192   {
2193     *((RECT *)lParam) = editor->rcFormat;
2194     return 0;
2195   }
2196   case EM_SETRECT:
2197   case EM_SETRECTNP:
2198   {
2199     if (lParam)
2200     {
2201       RECT *rc = (RECT *)lParam;
2202
2203       if (wParam)
2204       {
2205         editor->rcFormat.left += rc->left;
2206         editor->rcFormat.top += rc->top;
2207         editor->rcFormat.right += rc->right;
2208         editor->rcFormat.bottom += rc->bottom;
2209       }
2210       else
2211       {
2212         editor->rcFormat = *rc;
2213       }
2214     }
2215     else
2216     {
2217       GetClientRect(hWnd, &editor->rcFormat);
2218     }
2219     if (msg != EM_SETRECTNP)
2220       ME_RewrapRepaint(editor);
2221     return 0;
2222   }
2223   case EM_REQUESTRESIZE:
2224     ME_SendRequestResize(editor, TRUE);
2225     return 0;
2226   case WM_SETREDRAW:
2227     editor->bRedraw = wParam;
2228     return 0;
2229   case WM_SIZE:
2230   {
2231     GetClientRect(hWnd, &editor->rcFormat);
2232     ME_RewrapRepaint(editor);
2233     return DefWindowProcW(hWnd, msg, wParam, lParam);
2234   }
2235   case EM_GETOLEINTERFACE:
2236   {
2237     LPVOID *ppvObj = (LPVOID*) lParam;
2238     FIXME("EM_GETOLEINTERFACE %p: stub\n", ppvObj);
2239     return CreateIRichEditOle(editor, ppvObj);
2240   }
2241   case EM_SETOLECALLBACK:
2242     if(editor->lpOleCallback)
2243       IUnknown_Release(editor->lpOleCallback);
2244     editor->lpOleCallback = (LPRICHEDITOLECALLBACK)lParam;
2245     if(editor->lpOleCallback)
2246       IUnknown_AddRef(editor->lpOleCallback);
2247     return TRUE;
2248   case EM_GETWORDBREAKPROC:
2249     return (LRESULT)editor->pfnWordBreak;
2250   case EM_SETWORDBREAKPROC:
2251   {
2252     EDITWORDBREAKPROCW pfnOld = editor->pfnWordBreak;
2253
2254     editor->pfnWordBreak = (EDITWORDBREAKPROCW)lParam;
2255     return (LRESULT)pfnOld;
2256   }
2257   case EM_SETTEXTMODE:
2258   {
2259     LRESULT ret;
2260     int mask = 0;
2261     int changes = 0;
2262     if ((ret = RichEditANSIWndProc(hWnd, WM_GETTEXTLENGTH, 0, 0)) == 0)
2263     {
2264       /*Check for valid wParam*/
2265       if ((((wParam & TM_RICHTEXT) && ((wParam & TM_PLAINTEXT) << 1))) ||
2266           (((wParam & TM_MULTILEVELUNDO) && ((wParam & TM_SINGLELEVELUNDO) << 1))) ||
2267           (((wParam & TM_MULTICODEPAGE) && ((wParam & TM_SINGLECODEPAGE) << 1))))
2268         return 1;
2269       else
2270       {
2271         if (wParam & (TM_RICHTEXT | TM_PLAINTEXT))
2272         {
2273           mask |= (TM_RICHTEXT | TM_PLAINTEXT);
2274           changes |= (wParam & (TM_RICHTEXT | TM_PLAINTEXT));
2275         }
2276         /*FIXME: Currently no support for undo level and code page options*/
2277         editor->mode = (editor->mode & (~mask)) | changes;
2278         return 0;
2279       }
2280     }
2281     return ret;
2282   }
2283   default:
2284   do_default:
2285     return DefWindowProcW(hWnd, msg, wParam, lParam);
2286   }
2287   return 0L;
2288 }
2289
2290
2291 /******************************************************************
2292  *        RichEdit10ANSIWndProc (RICHED20.9)
2293  */
2294 LRESULT WINAPI RichEdit10ANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
2295 {
2296   LRESULT result;
2297
2298   /* FIXME: this is NOT the same as 2.0 version */
2299   result = RichEditANSIWndProc(hWnd, msg, wParam, lParam);
2300   if (msg == WM_NCCREATE)
2301   {
2302     ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
2303
2304     editor->bEmulateVersion10 = TRUE;
2305     editor->pBuffer->pLast->member.para.nCharOfs = 2;
2306   }
2307   return result;
2308 }
2309
2310 void ME_SendOldNotify(ME_TextEditor *editor, int nCode)
2311 {
2312   HWND hWnd = editor->hWnd;
2313   SendMessageA(GetParent(hWnd), WM_COMMAND, (nCode<<16)|GetWindowLongW(hWnd, GWLP_ID), (LPARAM)hWnd);
2314 }
2315
2316 int ME_CountParagraphsBetween(ME_TextEditor *editor, int from, int to)
2317 {
2318   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
2319   int i = 0;
2320
2321   while(item && item->member.para.next_para->member.para.nCharOfs <= from)
2322     item = item->member.para.next_para;
2323   if (!item)
2324     return 0;
2325   while(item && item->member.para.next_para->member.para.nCharOfs <= to) {
2326     item = item->member.para.next_para;
2327     i++;
2328   }
2329   return i;
2330 }
2331
2332
2333 int ME_GetTextW(ME_TextEditor *editor, WCHAR *buffer, int nStart, int nChars, int bCRLF)
2334 {
2335   ME_DisplayItem *item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
2336   int nWritten = 0;
2337   WCHAR *pStart = buffer;
2338
2339   if (!item) {
2340     *buffer = L'\0';
2341     return 0;
2342   }
2343
2344   if (nStart)
2345   {
2346     int nLen = ME_StrLen(item->member.run.strText) - nStart;
2347     if (nLen > nChars)
2348       nLen = nChars;
2349     CopyMemory(buffer, item->member.run.strText->szData + nStart, sizeof(WCHAR)*nLen);
2350     nChars -= nLen;
2351     nWritten += nLen;
2352     if (!nChars)
2353       return nWritten;
2354     buffer += nLen;
2355     nStart = 0;
2356     item = ME_FindItemFwd(item, diRun);
2357   }
2358
2359   while(nChars && item)
2360   {
2361     int nLen = ME_StrLen(item->member.run.strText);
2362     if (nLen > nChars)
2363       nLen = nChars;
2364
2365     if (item->member.run.nFlags & MERF_ENDPARA)
2366     {
2367       *buffer = '\r';
2368       if (bCRLF)
2369       {
2370         *(++buffer) = '\n';
2371         nWritten++;
2372       }
2373       assert(nLen == 1);
2374       /* our end paragraph consists of 2 characters now */
2375       if (editor->bEmulateVersion10)
2376         nChars--;
2377     }
2378     else
2379       CopyMemory(buffer, item->member.run.strText->szData, sizeof(WCHAR)*nLen);
2380     nChars -= nLen;
2381     nWritten += nLen;
2382     buffer += nLen;
2383
2384     if (!nChars)
2385     {
2386       TRACE("nWritten=%d, actual=%d\n", nWritten, buffer-pStart);
2387       *buffer = L'\0';
2388       return nWritten;
2389     }
2390     item = ME_FindItemFwd(item, diRun);
2391   }
2392   *buffer = L'\0';
2393   TRACE("nWritten=%d, actual=%d\n", nWritten, buffer-pStart);
2394   return nWritten;
2395 }
2396
2397 void ME_RegisterEditorClass(HINSTANCE hInstance)
2398 {
2399   BOOL bResult;
2400   WNDCLASSW wcW;
2401   WNDCLASSA wcA;
2402
2403   wcW.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
2404   wcW.lpfnWndProc = RichEditANSIWndProc;
2405   wcW.cbClsExtra = 0;
2406   wcW.cbWndExtra = 4;
2407   wcW.hInstance = NULL; /* hInstance would register DLL-local class */
2408   wcW.hIcon = NULL;
2409   wcW.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
2410   wcW.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
2411   wcW.lpszMenuName = NULL;
2412   wcW.lpszClassName = wszClassName;
2413   bResult = RegisterClassW(&wcW);
2414   assert(bResult);
2415   wcW.lpszClassName = wszClassName50;
2416   bResult = RegisterClassW(&wcW);
2417   assert(bResult);
2418
2419   wcA.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
2420   wcA.lpfnWndProc = RichEditANSIWndProc;
2421   wcA.cbClsExtra = 0;
2422   wcA.cbWndExtra = 4;
2423   wcA.hInstance = NULL; /* hInstance would register DLL-local class */
2424   wcA.hIcon = NULL;
2425   wcA.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
2426   wcA.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
2427   wcA.lpszMenuName = NULL;
2428   wcA.lpszClassName = "RichEdit20A";
2429   bResult = RegisterClassA(&wcA);
2430   assert(bResult);
2431   wcA.lpszClassName = "RichEdit50A";
2432   bResult = RegisterClassA(&wcA);
2433   assert(bResult);
2434 }
2435
2436 LRESULT WINAPI REComboWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
2437   /* FIXME: Not implemented */
2438   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
2439         hWnd, msg, get_msg_name(msg), wParam, lParam);
2440   return DefWindowProcW(hWnd, msg, wParam, lParam);
2441 }
2442
2443 LRESULT WINAPI REListWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
2444   /* FIXME: Not implemented */
2445   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
2446         hWnd, msg, get_msg_name(msg), wParam, lParam);
2447   return DefWindowProcW(hWnd, msg, wParam, lParam);
2448 }
2449
2450 /******************************************************************
2451  *        REExtendedRegisterClass (RICHED20.8)
2452  *
2453  * FIXME undocumented
2454  * Need to check for errors and implement controls and callbacks
2455  */
2456 LRESULT WINAPI REExtendedRegisterClass(void)
2457 {
2458   WNDCLASSW wcW;
2459   UINT result;
2460
2461   FIXME("semi stub\n");
2462
2463   wcW.cbClsExtra = 0;
2464   wcW.cbWndExtra = 4;
2465   wcW.hInstance = NULL;
2466   wcW.hIcon = NULL;
2467   wcW.hCursor = NULL;
2468   wcW.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
2469   wcW.lpszMenuName = NULL;
2470
2471   if (!ME_ListBoxRegistered)
2472   {
2473       wcW.style = CS_PARENTDC | CS_DBLCLKS | CS_GLOBALCLASS;
2474       wcW.lpfnWndProc = REListWndProc;
2475       wcW.lpszClassName = wszClassNameListBox;
2476       if (RegisterClassW(&wcW)) ME_ListBoxRegistered = TRUE;
2477   }
2478
2479   if (!ME_ComboBoxRegistered)
2480   {
2481       wcW.style = CS_PARENTDC | CS_DBLCLKS | CS_GLOBALCLASS | CS_VREDRAW | CS_HREDRAW;
2482       wcW.lpfnWndProc = REComboWndProc;
2483       wcW.lpszClassName = wszClassNameComboBox;
2484       if (RegisterClassW(&wcW)) ME_ComboBoxRegistered = TRUE;
2485   }
2486
2487   result = 0;
2488   if (ME_ListBoxRegistered)
2489       result += 1;
2490   if (ME_ComboBoxRegistered)
2491       result += 2;
2492
2493   return result;
2494 }