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 "ole2.h"
 227 #include "richole.h"
 228 #include "winreg.h"
 229 #define NO_SHLWAPI_STREAM
 230 #include "shlwapi.h"
 231 #include "imm.h"
 232 #include "textserv.h"
 233 #include "rtf.h"
 234
 235 WINE_DEFAULT_DEBUG_CHANNEL(richedit);
 236
 237 int me_debug = 0;
 238 HANDLE me_heap = NULL;
 239
 240 static BOOL ME_ListBoxRegistered = FALSE;
 241 static BOOL ME_ComboBoxRegistered = FALSE;
 242
 243 static ME_TextBuffer *ME_MakeText(void) {
 244
 245   ME_TextBuffer *buf = ALLOC_OBJ(ME_TextBuffer);
 246
 247   ME_DisplayItem *p1 = ME_MakeDI(diTextStart);
 248   ME_DisplayItem *p2 = ME_MakeDI(diTextEnd);
 249
 250   p1->prev = NULL;
 251   p1->next = p2;
 252   p2->prev = p1;
 253   p2->next = NULL;
 254   p1->member.para.next_para = p2;
 255   p2->member.para.prev_para = p1;
 256   p2->member.para.nCharOfs = 0;
 257
 258   buf->pFirst = p1;
 259   buf->pLast = p2;
 260   buf->pCharStyle = NULL;
 261
 262   return buf;
 263 }
 264
 265
 266 static LRESULT ME_StreamInText(ME_TextEditor *editor, DWORD dwFormat, ME_InStream *stream, ME_Style *style)
 267 {
 268   WCHAR wszText[STREAMIN_BUFFER_SIZE+1];
 269   WCHAR *pText;
 270
 271   TRACE("%08lx %p\n", dwFormat, stream);
 272
 273   do {
 274     long nWideChars = 0;
 275
 276     if (!stream->dwSize)
 277     {
 278       ME_StreamInFill(stream);
 279       if (stream->editstream->dwError)
 280         break;
 281       if (!stream->dwSize)
 282         break;
 283     }
 284
 285     if (!(dwFormat & SF_UNICODE))
 286     {
 287       /* FIXME? this is doomed to fail on true MBCS like UTF-8, luckily they're unlikely to be used as CP_ACP */
 288       nWideChars = MultiByteToWideChar(CP_ACP, 0, stream->buffer, stream->dwSize, wszText, STREAMIN_BUFFER_SIZE);
 289       pText = wszText;
 290     }
 291     else
 292     {
 293       nWideChars = stream->dwSize >> 1;
 294       pText = (WCHAR *)stream->buffer;
 295     }
 296
 297     ME_InsertTextFromCursor(editor, 0, pText, nWideChars, style);
 298     if (stream->dwSize == 0)
 299       break;
 300     stream->dwSize = 0;
 301   } while(1);
 302   ME_CommitUndo(editor);
 303   ME_UpdateRepaint(editor);
 304   return 0;
 305 }
 306
 307 static void ME_RTFCharAttrHook(RTF_Info *info)
 308 {
 309   CHARFORMAT2W fmt;
 310   fmt.cbSize = sizeof(fmt);
 311   fmt.dwMask = 0;
 312
 313   switch(info->rtfMinor)
 314   {
 315     case rtfPlain:
 316       /* FIXME add more flags once they're implemented */
 317       fmt.dwMask = CFM_BOLD | CFM_ITALIC | CFM_UNDERLINE | CFM_STRIKEOUT | CFM_COLOR | CFM_BACKCOLOR | CFM_SIZE | CFM_WEIGHT;
 318       fmt.dwEffects = CFE_AUTOCOLOR | CFE_AUTOBACKCOLOR;
 319       fmt.yHeight = 12*20; /* 12pt */
 320       fmt.wWeight = 400;
 321       break;
 322     case rtfBold:
 323       fmt.dwMask = CFM_BOLD;
 324       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 325       break;
 326     case rtfItalic:
 327       fmt.dwMask = CFM_ITALIC;
 328       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 329       break;
 330     case rtfUnderline:
 331       fmt.dwMask = CFM_UNDERLINE;
 332       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 333       fmt.bUnderlineType = CFU_CF1UNDERLINE;
 334       break;
 335     case rtfNoUnderline:
 336       fmt.dwMask = CFM_UNDERLINE;
 337       fmt.dwEffects = 0;
 338       break;
 339     case rtfStrikeThru:
 340       fmt.dwMask = CFM_STRIKEOUT;
 341       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 342       break;
 343     case rtfSubScript:
 344     case rtfSuperScript:
 345     case rtfSubScrShrink:
 346     case rtfSuperScrShrink:
 347     case rtfNoSuperSub:
 348       fmt.dwMask = CFM_SUBSCRIPT|CFM_SUPERSCRIPT;
 349       if (info->rtfMinor == rtfSubScrShrink) fmt.dwEffects = CFE_SUBSCRIPT;
 350       if (info->rtfMinor == rtfSuperScrShrink) fmt.dwEffects = CFE_SUPERSCRIPT;
 351       if (info->rtfMinor == rtfNoSuperSub) fmt.dwEffects = 0;
 352       break;
 353     case rtfInvisible:
 354       fmt.dwMask = CFM_HIDDEN;
 355       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 356       break;
 357     case rtfBackColor:
 358       fmt.dwMask = CFM_BACKCOLOR;
 359       fmt.dwEffects = 0;
 360       if (info->rtfParam == 0)
 361         fmt.dwEffects = CFE_AUTOBACKCOLOR;
 362       else if (info->rtfParam != rtfNoParam)
 363       {
 364         RTFColor *c = RTFGetColor(info, info->rtfParam);
 365         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 366       }
 367       break;
 368     case rtfForeColor:
 369       fmt.dwMask = CFM_COLOR;
 370       fmt.dwEffects = 0;
 371       if (info->rtfParam == 0)
 372         fmt.dwEffects = CFE_AUTOCOLOR;
 373       else if (info->rtfParam != rtfNoParam)
 374       {
 375         RTFColor *c = RTFGetColor(info, info->rtfParam);
 376         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 377       }
 378       break;
 379     case rtfFontNum:
 380       if (info->rtfParam != rtfNoParam)
 381       {
 382         RTFFont *f = RTFGetFont(info, info->rtfParam);
 383         if (f)
 384         {
 385           MultiByteToWideChar(CP_ACP, 0, f->rtfFName, -1, fmt.szFaceName, sizeof(fmt.szFaceName)/sizeof(WCHAR));
 386           fmt.szFaceName[sizeof(fmt.szFaceName)/sizeof(WCHAR)-1] = '\0';
 387           fmt.bCharSet = f->rtfFCharSet;
 388           fmt.dwMask = CFM_FACE | CFM_CHARSET;
 389         }
 390       }
 391       break;
 392     case rtfFontSize:
 393       fmt.dwMask = CFM_SIZE;
 394       if (info->rtfParam != rtfNoParam)
 395         fmt.yHeight = info->rtfParam*10;
 396       break;
 397   }
 398   if (fmt.dwMask) {
 399     ME_Style *style2;
 400     RTFFlushOutputBuffer(info);
 401     /* FIXME too slow ? how come ? */
 402     style2 = ME_ApplyStyle(info->style, &fmt);
 403     ME_ReleaseStyle(info->style);
 404     info->style = style2;
 405     info->styleChanged = TRUE;
 406   }
 407 }
 408
 409 /* FIXME this function doesn't get any information about context of the RTF tag, which is very bad,
 410    the same tags mean different things in different contexts */
 411 static void ME_RTFParAttrHook(RTF_Info *info)
 412 {
 413   PARAFORMAT2 fmt;
 414   fmt.cbSize = sizeof(fmt);
 415   fmt.dwMask = 0;
 416
 417   switch(info->rtfMinor)
 418   {
 419   case rtfParDef: /* I'm not 100% sure what does it do, but I guess it restores default paragraph attributes */
 420     fmt.dwMask = PFM_ALIGNMENT | PFM_TABSTOPS | PFM_OFFSET | PFM_STARTINDENT;
 421     fmt.wAlignment = PFA_LEFT;
 422     fmt.cTabCount = 0;
 423     fmt.dxOffset = fmt.dxStartIndent = 0;
 424     break;
 425   case rtfFirstIndent:
 426     ME_GetSelectionParaFormat(info->editor, &fmt);
 427     fmt.dwMask = PFM_STARTINDENT | PFM_OFFSET;
 428     fmt.dxStartIndent += info->rtfParam + fmt.dxOffset;
 429     fmt.dxOffset = -info->rtfParam;
 430     break;
 431   case rtfLeftIndent:
 432     ME_GetSelectionParaFormat(info->editor, &fmt);
 433     fmt.dwMask = PFM_STARTINDENT;
 434     fmt.dxStartIndent = -fmt.dxOffset + info->rtfParam;
 435     break;
 436   case rtfRightIndent:
 437     fmt.dwMask = PFM_RIGHTINDENT;
 438     fmt.dxRightIndent = info->rtfParam;
 439     break;
 440   case rtfQuadLeft:
 441   case rtfQuadJust:
 442     fmt.dwMask = PFM_ALIGNMENT;
 443     fmt.wAlignment = PFA_LEFT;
 444     break;
 445   case rtfQuadRight:
 446     fmt.dwMask = PFM_ALIGNMENT;
 447     fmt.wAlignment = PFA_RIGHT;
 448     break;
 449   case rtfQuadCenter:
 450     fmt.dwMask = PFM_ALIGNMENT;
 451     fmt.wAlignment = PFA_CENTER;
 452     break;
 453   case rtfTabPos:
 454     ME_GetSelectionParaFormat(info->editor, &fmt);
 455     if (!(fmt.dwMask & PFM_TABSTOPS))
 456     {
 457       fmt.dwMask |= PFM_TABSTOPS;
 458       fmt.cTabCount = 0;
 459     }
 460     if (fmt.cTabCount < MAX_TAB_STOPS)
 461       fmt.rgxTabs[fmt.cTabCount++] = info->rtfParam;
 462     break;
 463   }
 464   if (fmt.dwMask) {
 465     RTFFlushOutputBuffer(info);
 466     /* FIXME too slow ? how come ?*/
 467     ME_SetSelectionParaFormat(info->editor, &fmt);
 468   }
 469 }
 470
 471 static void ME_RTFReadHook(RTF_Info *info) {
 472   switch(info->rtfClass)
 473   {
 474     case rtfGroup:
 475       switch(info->rtfMajor)
 476       {
 477         case rtfBeginGroup:
 478           if (info->stackTop < maxStack) {
 479             memcpy(&info->stack[info->stackTop].fmt, &info->style->fmt, sizeof(CHARFORMAT2W));
 480             info->stack[info->stackTop].codePage = info->codePage;
 481             info->stack[info->stackTop].unicodeLength = info->unicodeLength;
 482           }
 483           info->stackTop++;
 484           info->styleChanged = FALSE;
 485           break;
 486         case rtfEndGroup:
 487         {
 488           ME_Style *s;
 489           RTFFlushOutputBuffer(info);
 490           if (info->stackTop<=1) {
 491             info->rtfClass = rtfEOF;
 492             return;
 493           }
 494           info->stackTop--;
 495           assert(info->stackTop >= 0);
 496           if (info->styleChanged)
 497           {
 498             /* FIXME too slow ? how come ? */
 499             s = ME_ApplyStyle(info->style, &info->stack[info->stackTop].fmt);
 500             ME_ReleaseStyle(info->style);
 501             info->style = s;
 502             info->codePage = info->stack[info->stackTop].codePage;
 503             info->unicodeLength = info->stack[info->stackTop].unicodeLength;
 504           }
 505           break;
 506         }
 507       }
 508       break;
 509     case rtfControl:
 510       switch(info->rtfMajor)
 511       {
 512         case rtfCharAttr:
 513           ME_RTFCharAttrHook(info);
 514           break;
 515         case rtfParAttr:
 516           ME_RTFParAttrHook(info);
 517           break;
 518       }
 519       break;
 520   }
 521 }
 522
 523 void
 524 ME_StreamInFill(ME_InStream *stream)
 525 {
 526   stream->editstream->dwError = stream->editstream->pfnCallback(stream->editstream->dwCookie,
 527                                                                 (BYTE *)stream->buffer,
 528                                                                 sizeof(stream->buffer),
 529                                                                 (LONG *)&stream->dwSize);
 530   stream->dwUsed = 0;
 531 }
 532
 533 static LRESULT ME_StreamIn(ME_TextEditor *editor, DWORD format, EDITSTREAM *stream)
 534 {
 535   RTF_Info parser;
 536   ME_Style *style;
 537   int from, to, to2, nUndoMode;
 538   ME_UndoItem *pUI;
 539   int nEventMask = editor->nEventMask;
 540   ME_InStream inStream;
 541
 542   TRACE("stream==%p hWnd==%p format==0x%X\n", stream, editor->hWnd, (UINT)format);
 543   editor->nEventMask = 0;
 544
 545   ME_GetSelection(editor, &from, &to);
 546   if (format & SFF_SELECTION) {
 547     style = ME_GetSelectionInsertStyle(editor);
 548
 549     ME_InternalDeleteText(editor, from, to-from);
 550   }
 551   else {
 552     style = editor->pBuffer->pDefaultStyle;
 553     ME_AddRefStyle(style);
 554     SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 555     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
 556     from = to = 0;
 557     ME_ClearTempStyle(editor);
 558     /* FIXME restore default paragraph formatting ! */
 559   }
 560
 561   nUndoMode = editor->nUndoMode;
 562   editor->nUndoMode = umIgnore;
 563
 564   inStream.editstream = stream;
 565   inStream.editstream->dwError = 0;
 566   inStream.dwSize = 0;
 567   inStream.dwUsed = 0;
 568
 569   if (format & SF_RTF)
 570   {
 571     /* Check if it's really RTF, and if it is not, use plain text */
 572     ME_StreamInFill(&inStream);
 573     if (!inStream.editstream->dwError)
 574     {
 575       if (strncmp(inStream.buffer, "{\\rtf1", 6) && strncmp(inStream.buffer, "{\\urtf", 6))
 576       {
 577         format &= ~SF_RTF;
 578         format |= SF_TEXT;
 579       }
 580     }
 581   }
 582
 583   if (!inStream.editstream->dwError)
 584   {
 585     if (format & SF_RTF) {
 586       /* setup the RTF parser */
 587       memset(&parser, 0, sizeof parser);
 588       RTFSetEditStream(&parser, &inStream);
 589       parser.rtfFormat = format&(SF_TEXT|SF_RTF);
 590       parser.hwndEdit = editor->hWnd;
 591       parser.editor = editor;
 592       parser.style = style;
 593       WriterInit(&parser);
 594       RTFInit(&parser);
 595       RTFSetReadHook(&parser, ME_RTFReadHook);
 596       BeginFile(&parser);
 597
 598       /* do the parsing */
 599       RTFRead(&parser);
 600       RTFFlushOutputBuffer(&parser);
 601       RTFDestroy(&parser);
 602
 603       style = parser.style;
 604     }
 605     else if (format & SF_TEXT)
 606       ME_StreamInText(editor, format, &inStream, style);
 607     else
 608       ERR("EM_STREAMIN without SF_TEXT or SF_RTF\n");
 609     ME_GetSelection(editor, &to, &to2);
 610     /* put the cursor at the top */
 611     if (!(format & SFF_SELECTION))
 612       SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 613   }
 614
 615   editor->nUndoMode = nUndoMode;
 616   pUI = ME_AddUndoItem(editor, diUndoDeleteRun, NULL);
 617   TRACE("from %d to %d\n", from, to);
 618   if (pUI && from < to)
 619   {
 620     pUI->nStart = from;
 621     pUI->nLen = to-from;
 622   }
 623   ME_CommitUndo(editor);
 624   ME_ReleaseStyle(style);
 625   editor->nEventMask = nEventMask;
 626   if (editor->bRedraw)
 627   {
 628     ME_UpdateRepaint(editor);
 629   }
 630   if (!(format & SFF_SELECTION)) {
 631     ME_ClearTempStyle(editor);
 632   }
 633   ME_MoveCaret(editor);
 634   ME_SendSelChange(editor);
 635   ME_SendRequestResize(editor, FALSE);
 636
 637   return 0;
 638 }
 639
 640
 641 ME_DisplayItem *
 642 ME_FindItemAtOffset(ME_TextEditor *editor, ME_DIType nItemType, int nOffset, int *nItemOffset)
 643 {
 644   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
 645
 646   while (item && item->member.para.next_para->member.para.nCharOfs <= nOffset)
 647     item = ME_FindItemFwd(item, diParagraph);
 648
 649   if (!item)
 650     return item;
 651
 652   nOffset -= item->member.para.nCharOfs;
 653   if (nItemType == diParagraph) {
 654     if (nItemOffset)
 655       *nItemOffset = nOffset;
 656     return item;
 657   }
 658
 659   do {
 660     item = ME_FindItemFwd(item, diRun);
 661   } while (item && (item->member.run.nCharOfs + ME_StrLen(item->member.run.strText) <= nOffset));
 662   if (item) {
 663     nOffset -= item->member.run.nCharOfs;
 664     if (nItemOffset)
 665       *nItemOffset = nOffset;
 666   }
 667   return item;
 668 }
 669
 670
 671 static int
 672 ME_FindText(ME_TextEditor *editor, DWORD flags, CHARRANGE *chrg, WCHAR *text, CHARRANGE *chrgText)
 673 {
 674   int nStart, nEnd;
 675   int nLen = lstrlenW(text);
 676   int nMin, nMax;
 677   ME_DisplayItem *item;
 678   ME_DisplayItem *para;
 679
 680   TRACE("flags==0x%08lx, chrg->cpMin==%ld, chrg->cpMax==%ld text==%s\n",
 681         flags, chrg->cpMin, chrg->cpMax, debugstr_w(text));
 682
 683   if (!(flags & FR_MATCHCASE))
 684     FIXME("Case-insensitive search not implemented\n");
 685   if (flags & ~(FR_DOWN | FR_MATCHCASE))
 686     FIXME("Flags 0x%08lx not implemented\n", flags & ~(FR_DOWN | FR_MATCHCASE));
 687
 688   if (chrg->cpMax == -1)
 689   {
 690     nMin = chrg->cpMin;
 691     nMax = ME_GetTextLength(editor);
 692   }
 693   else
 694   {
 695     nMin = min(chrg->cpMin, chrg->cpMax);
 696     nMax = max(chrg->cpMin, chrg->cpMax);
 697   }
 698
 699   if (!nLen)
 700   {
 701     if (chrgText)
 702       chrgText->cpMin = chrgText->cpMax = ((flags & FR_DOWN) ? nMin : nMax);
 703     return chrgText->cpMin;
 704   }
 705
 706   if (flags & FR_DOWN) /* Forward search */
 707   {
 708     nStart = nMin;
 709     item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
 710     if (!item)
 711       return -1;
 712
 713     para = ME_GetParagraph(item);
 714     while (item
 715            && para->member.para.nCharOfs + item->member.run.nCharOfs + nStart + nLen < nMax)
 716     {
 717       ME_DisplayItem *pCurItem = item;
 718       int nCurStart = nStart;
 719       int nMatched = 0;
 720
 721       while (pCurItem && pCurItem->member.run.strText->szData[nCurStart + nMatched] == text[nMatched])
 722       {
 723         nMatched++;
 724         if (nMatched == nLen)
 725         {
 726           nStart += para->member.para.nCharOfs + item->member.run.nCharOfs;
 727           if (chrgText)
 728           {
 729             chrgText->cpMin = nStart;
 730             chrgText->cpMax = nStart + nLen;
 731           }
 732           TRACE("found at %d-%d\n", nStart, nStart + nLen);
 733           return nStart;
 734         }
 735         if (nCurStart + nMatched == ME_StrLen(pCurItem->member.run.strText))
 736         {
 737           pCurItem = ME_FindItemFwd(pCurItem, diRun);
 738           para = ME_GetParagraph(pCurItem);
 739           nCurStart = -nMatched;
 740         }
 741       }
 742       nStart++;
 743       if (nStart == ME_StrLen(item->member.run.strText))
 744       {
 745         item = ME_FindItemFwd(item, diRun);
 746         para = ME_GetParagraph(item);
 747         nStart = 0;
 748       }
 749     }
 750   }
 751   else /* Backward search */
 752   {
 753     nEnd = nMax;
 754     item = ME_FindItemAtOffset(editor, diRun, nEnd, &nEnd);
 755     if (!item)
 756       return -1;
 757
 758     para = ME_GetParagraph(item);
 759
 760     while (item
 761            && para->member.para.nCharOfs + item->member.run.nCharOfs + nEnd - nLen >= nMin)
 762     {
 763       ME_DisplayItem *pCurItem = item;
 764       int nCurEnd = nEnd;
 765       int nMatched = 0;
 766
 767       while (pCurItem && pCurItem->member.run.strText->szData[nCurEnd - nMatched - 1] == text[nLen - nMatched - 1])
 768       {
 769         nMatched++;
 770         if (nMatched == nLen)
 771         {
 772           nStart = para->member.para.nCharOfs + item->member.run.nCharOfs + nCurEnd - nMatched;
 773           if (chrgText)
 774           {
 775             chrgText->cpMin = nStart;
 776             chrgText->cpMax = nStart + nLen;
 777           }
 778           TRACE("found at %d-%d\n", nStart, nStart + nLen);
 779           return nStart;
 780         }
 781         if (nCurEnd - nMatched == 0)
 782         {
 783           pCurItem = ME_FindItemBack(pCurItem, diRun);
 784           para = ME_GetParagraph(pCurItem);
 785           nCurEnd = ME_StrLen(pCurItem->member.run.strText) + nMatched;
 786         }
 787       }
 788       nEnd--;
 789       if (nEnd < 0)
 790       {
 791         item = ME_FindItemBack(item, diRun);
 792         para = ME_GetParagraph(item);
 793         nEnd = ME_StrLen(item->member.run.strText);
 794       }
 795     }
 796   }
 797   TRACE("not found\n");
 798   return -1;
 799 }
 800
 801
 802 static BOOL
 803 ME_KeyDown(ME_TextEditor *editor, WORD nKey)
 804 {
 805   BOOL ctrl_is_down = GetKeyState(VK_CONTROL) & 0x8000;
 806   BOOL shift_is_down = GetKeyState(VK_SHIFT) & 0x8000;
 807
 808   switch (nKey)
 809   {
 810     case VK_LEFT:
 811     case VK_RIGHT:
 812     case VK_UP:
 813     case VK_DOWN:
 814     case VK_HOME:
 815     case VK_END:
 816     case VK_PRIOR:
 817     case VK_NEXT:
 818       ME_ArrowKey(editor, nKey, shift_is_down, ctrl_is_down);
 819       return TRUE;
 820     case VK_BACK:
 821     case VK_DELETE:
 822       /* FIXME backspace and delete aren't the same, they act different wrt paragraph style of the merged paragraph */
 823       if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY)
 824         return FALSE;
 825       if (ME_IsSelection(editor))
 826         ME_DeleteSelection(editor);
 827       else if (nKey == VK_DELETE || ME_ArrowKey(editor, VK_LEFT, FALSE, FALSE))
 828         ME_DeleteTextAtCursor(editor, 1, 1);
 829       else
 830         return TRUE;
 831       ME_QueueInvalidateFromCursor(editor, 1);
 832       ME_UpdateRepaint(editor);
 833       ME_SendRequestResize(editor, FALSE);
 834       return TRUE;
 835
 836     default:
 837       if (ctrl_is_down)
 838       {
 839         if (nKey == 'W')
 840         {
 841           CHARFORMAT2W chf;
 842           char buf[2048];
 843
 844           ME_GetSelectionCharFormat(editor, &chf);
 845           ME_DumpStyleToBuf(&chf, buf);
 846           MessageBoxA(NULL, buf, "Style dump", MB_OK);
 847         }
 848         if (nKey == 'Q')
 849         {
 850           ME_CheckCharOffsets(editor);
 851         }
 852       }
 853   }
 854   return FALSE;
 855 }
 856
 857
 858 ME_TextEditor *ME_MakeEditor(HWND hWnd) {
 859   ME_TextEditor *ed = ALLOC_OBJ(ME_TextEditor);
 860   HDC hDC;
 861   int i;
 862   ed->hWnd = hWnd;
 863   ed->bEmulateVersion10 = FALSE;
 864   ed->pBuffer = ME_MakeText();
 865   hDC = GetDC(hWnd);
 866   ME_MakeFirstParagraph(hDC, ed->pBuffer);
 867   ReleaseDC(hWnd, hDC);
 868   ed->bCaretShown = FALSE;
 869   ed->nCursors = 3;
 870   ed->pCursors = ALLOC_N_OBJ(ME_Cursor, ed->nCursors);
 871   ed->pCursors[0].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
 872   ed->pCursors[0].nOffset = 0;
 873   ed->pCursors[1].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
 874   ed->pCursors[1].nOffset = 0;
 875   ed->nLastTotalLength = ed->nTotalLength = 0;
 876   ed->nUDArrowX = -1;
 877   ed->nSequence = 0;
 878   ed->rgbBackColor = -1;
 879   ed->hbrBackground = GetSysColorBrush(COLOR_WINDOW);
 880   ed->bCaretAtEnd = FALSE;
 881   ed->nEventMask = 0;
 882   ed->nModifyStep = 0;
 883   ed->pUndoStack = ed->pRedoStack = NULL;
 884   ed->nUndoMode = umAddToUndo;
 885   ed->nParagraphs = 1;
 886   ed->nLastSelStart = ed->nLastSelEnd = 0;
 887   ed->nScrollPosY = 0;
 888   ed->nZoomNumerator = ed->nZoomDenominator = 0;
 889   ed->bRedraw = TRUE;
 890   ed->nInvalidOfs = -1;
 891   ed->pfnWordBreak = NULL;
 892   GetClientRect(hWnd, &ed->rcFormat);
 893   for (i=0; i<HFONT_CACHE_SIZE; i++)
 894   {
 895     ed->pFontCache[i].nRefs = 0;
 896     ed->pFontCache[i].nAge = 0;
 897     ed->pFontCache[i].hFont = NULL;
 898   }
 899   ME_CheckCharOffsets(ed);
 900   return ed;
 901 }
 902
 903 typedef struct tagME_GlobalDestStruct
 904 {
 905   HGLOBAL hData;
 906   int nLength;
 907 } ME_GlobalDestStruct;
 908
 909 static DWORD CALLBACK ME_AppendToHGLOBAL(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 910 {
 911   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 912   int nMaxSize;
 913   BYTE *pDest;
 914
 915   nMaxSize = GlobalSize(pData->hData);
 916   if (pData->nLength+cb+1 >= cb)
 917   {
 918     /* round up to 2^17 */
 919     int nNewSize = (((nMaxSize+cb+1)|0x1FFFF)+1) & 0xFFFE0000;
 920     pData->hData = GlobalReAlloc(pData->hData, nNewSize, 0);
 921   }
 922   pDest = (BYTE *)GlobalLock(pData->hData);
 923   memcpy(pDest + pData->nLength, lpBuff, cb);
 924   pData->nLength += cb;
 925   pDest[pData->nLength] = '\0';
 926   GlobalUnlock(pData->hData);
 927   *pcb = cb;
 928
 929   return 0;
 930 }
 931
 932 static DWORD CALLBACK ME_ReadFromHGLOBALUnicode(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 933 {
 934   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 935   int i;
 936   WORD *pSrc, *pDest;
 937
 938   cb = cb >> 1;
 939   pDest = (WORD *)lpBuff;
 940   pSrc = (WORD *)GlobalLock(pData->hData);
 941   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
 942     pDest[i] = pSrc[pData->nLength+i];
 943   }
 944   pData->nLength += i;
 945   *pcb = 2*i;
 946   GlobalUnlock(pData->hData);
 947   return 0;
 948 }
 949
 950 static DWORD CALLBACK ME_ReadFromHGLOBALRTF(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 951 {
 952   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 953   int i;
 954   BYTE *pSrc, *pDest;
 955
 956   pDest = lpBuff;
 957   pSrc = (BYTE *)GlobalLock(pData->hData);
 958   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
 959     pDest[i] = pSrc[pData->nLength+i];
 960   }
 961   pData->nLength += i;
 962   *pcb = i;
 963   GlobalUnlock(pData->hData);
 964   return 0;
 965 }
 966
 967
 968 void ME_DestroyEditor(ME_TextEditor *editor)
 969 {
 970   ME_DisplayItem *pFirst = editor->pBuffer->pFirst;
 971   ME_DisplayItem *p = pFirst, *pNext = NULL;
 972   int i;
 973
 974   ME_ClearTempStyle(editor);
 975   ME_EmptyUndoStack(editor);
 976   while(p) {
 977     pNext = p->next;
 978     ME_DestroyDisplayItem(p);
 979     p = pNext;
 980   }
 981   ME_ReleaseStyle(editor->pBuffer->pDefaultStyle);
 982   for (i=0; i<HFONT_CACHE_SIZE; i++)
 983   {
 984     if (editor->pFontCache[i].hFont)
 985       DeleteObject(editor->pFontCache[i].hFont);
 986   }
 987   DeleteObject(editor->hbrBackground);
 988
 989   FREE_OBJ(editor);
 990 }
 991
 992 static const WCHAR wszClassName[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '2', '0', 'W', 0};
 993 static const WCHAR wszClassName50[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '5', '0', 'W', 0};
 994 static const WCHAR wszClassNameListBox[] = {'R','E','L','i','s','t','B','o','x','2','0','W', 0};
 995 static const WCHAR wszClassNameComboBox[] = {'R','E','C','o','m','b','o','B','o','x','2','0','W', 0};
 996
 997 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 998 {
 999     TRACE("\n");
1000     switch (fdwReason)
1001     {
1002     case DLL_PROCESS_ATTACH:
1003       DisableThreadLibraryCalls(hinstDLL);
1004       me_heap = HeapCreate (0, 0x10000, 0);
1005       ME_RegisterEditorClass(hinstDLL);
1006       break;
1007
1008     case DLL_PROCESS_DETACH:
1009       UnregisterClassW(wszClassName, 0);
1010       UnregisterClassW(wszClassName50, 0);
1011       UnregisterClassA("RichEdit20A", 0);
1012       UnregisterClassA("RichEdit50A", 0);
1013       if (ME_ListBoxRegistered)
1014           UnregisterClassW(wszClassNameListBox, 0);
1015       if (ME_ComboBoxRegistered)
1016           UnregisterClassW(wszClassNameComboBox, 0);
1017       HeapDestroy (me_heap);
1018       me_heap = NULL;
1019       break;
1020     }
1021     return TRUE;
1022 }
1023
1024
1025 #define UNSUPPORTED_MSG(e) \
1026   case e: \
1027     FIXME(#e ": stub\n"); \
1028     return DefWindowProcW(hWnd, msg, wParam, lParam);
1029
1030 static const char * const edit_messages[] = {
1031   "EM_GETSEL",
1032   "EM_SETSEL",
1033   "EM_GETRECT",
1034   "EM_SETRECT",
1035   "EM_SETRECTNP",
1036   "EM_SCROLL",
1037   "EM_LINESCROLL",
1038   "EM_SCROLLCARET",
1039   "EM_GETMODIFY",
1040   "EM_SETMODIFY",
1041   "EM_GETLINECOUNT",
1042   "EM_LINEINDEX",
1043   "EM_SETHANDLE",
1044   "EM_GETHANDLE",
1045   "EM_GETTHUMB",
1046   "EM_UNKNOWN_BF",
1047   "EM_UNKNOWN_C0",
1048   "EM_LINELENGTH",
1049   "EM_REPLACESEL",
1050   "EM_UNKNOWN_C3",
1051   "EM_GETLINE",
1052   "EM_LIMITTEXT",
1053   "EM_CANUNDO",
1054   "EM_UNDO",
1055   "EM_FMTLINES",
1056   "EM_LINEFROMCHAR",
1057   "EM_UNKNOWN_CA",
1058   "EM_SETTABSTOPS",
1059   "EM_SETPASSWORDCHAR",
1060   "EM_EMPTYUNDOBUFFER",
1061   "EM_GETFIRSTVISIBLELINE",
1062   "EM_SETREADONLY",
1063   "EM_SETWORDBREAKPROC",
1064   "EM_GETWORDBREAKPROC",
1065   "EM_GETPASSWORDCHAR",
1066   "EM_SETMARGINS",
1067   "EM_GETMARGINS",
1068   "EM_GETLIMITTEXT",
1069   "EM_POSFROMCHAR",
1070   "EM_CHARFROMPOS"
1071 };
1072
1073 static const char * const richedit_messages[] = {
1074   "EM_CANPASTE",
1075   "EM_DISPLAYBAND",
1076   "EM_EXGETSEL",
1077   "EM_EXLIMITTEXT",
1078   "EM_EXLINEFROMCHAR",
1079   "EM_EXSETSEL",
1080   "EM_FINDTEXT",
1081   "EM_FORMATRANGE",
1082   "EM_GETCHARFORMAT",
1083   "EM_GETEVENTMASK",
1084   "EM_GETOLEINTERFACE",
1085   "EM_GETPARAFORMAT",
1086   "EM_GETSELTEXT",
1087   "EM_HIDESELECTION",
1088   "EM_PASTESPECIAL",
1089   "EM_REQUESTRESIZE",
1090   "EM_SELECTIONTYPE",
1091   "EM_SETBKGNDCOLOR",
1092   "EM_SETCHARFORMAT",
1093   "EM_SETEVENTMASK",
1094   "EM_SETOLECALLBACK",
1095   "EM_SETPARAFORMAT",
1096   "EM_SETTARGETDEVICE",
1097   "EM_STREAMIN",
1098   "EM_STREAMOUT",
1099   "EM_GETTEXTRANGE",
1100   "EM_FINDWORDBREAK",
1101   "EM_SETOPTIONS",
1102   "EM_GETOPTIONS",
1103   "EM_FINDTEXTEX",
1104   "EM_GETWORDBREAKPROCEX",
1105   "EM_SETWORDBREAKPROCEX",
1106   "EM_SETUNDOLIMIT",
1107   "EM_UNKNOWN_USER_83",
1108   "EM_REDO",
1109   "EM_CANREDO",
1110   "EM_GETUNDONAME",
1111   "EM_GETREDONAME",
1112   "EM_STOPGROUPTYPING",
1113   "EM_SETTEXTMODE",
1114   "EM_GETTEXTMODE",
1115   "EM_AUTOURLDETECT",
1116   "EM_GETAUTOURLDETECT",
1117   "EM_SETPALETTE",
1118   "EM_GETTEXTEX",
1119   "EM_GETTEXTLENGTHEX",
1120   "EM_SHOWSCROLLBAR",
1121   "EM_SETTEXTEX",
1122   "EM_UNKNOWN_USER_98",
1123   "EM_UNKNOWN_USER_99",
1124   "EM_SETPUNCTUATION",
1125   "EM_GETPUNCTUATION",
1126   "EM_SETWORDWRAPMODE",
1127   "EM_GETWORDWRAPMODE",
1128   "EM_SETIMECOLOR",
1129   "EM_GETIMECOLOR",
1130   "EM_SETIMEOPTIONS",
1131   "EM_GETIMEOPTIONS",
1132   "EM_CONVPOSITION",
1133   "EM_UNKNOWN_USER_109",
1134   "EM_UNKNOWN_USER_110",
1135   "EM_UNKNOWN_USER_111",
1136   "EM_UNKNOWN_USER_112",
1137   "EM_UNKNOWN_USER_113",
1138   "EM_UNKNOWN_USER_114",
1139   "EM_UNKNOWN_USER_115",
1140   "EM_UNKNOWN_USER_116",
1141   "EM_UNKNOWN_USER_117",
1142   "EM_UNKNOWN_USER_118",
1143   "EM_UNKNOWN_USER_119",
1144   "EM_SETLANGOPTIONS",
1145   "EM_GETLANGOPTIONS",
1146   "EM_GETIMECOMPMODE",
1147   "EM_FINDTEXTW",
1148   "EM_FINDTEXTEXW",
1149   "EM_RECONVERSION",
1150   "EM_SETIMEMODEBIAS",
1151   "EM_GETIMEMODEBIAS"
1152 };
1153
1154 static const char *
1155 get_msg_name(UINT msg)
1156 {
1157   if (msg >= EM_GETSEL && msg <= EM_SETLIMITTEXT)
1158     return edit_messages[msg - EM_GETSEL];
1159   if (msg >= EM_CANPASTE && msg <= EM_GETIMEMODEBIAS)
1160     return richedit_messages[msg - EM_CANPASTE];
1161   return "";
1162 }
1163
1164 /******************************************************************
1165  *        RichEditANSIWndProc (RICHED20.10)
1166  */
1167 LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
1168   SCROLLINFO si;
1169   ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
1170
1171   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
1172         hWnd, msg, get_msg_name(msg), wParam, lParam);
1173
1174   switch(msg) {
1175
1176   UNSUPPORTED_MSG(EM_AUTOURLDETECT)
1177   UNSUPPORTED_MSG(EM_DISPLAYBAND)
1178   UNSUPPORTED_MSG(EM_EXLIMITTEXT)
1179   UNSUPPORTED_MSG(EM_FINDWORDBREAK)
1180   UNSUPPORTED_MSG(EM_FMTLINES)
1181   UNSUPPORTED_MSG(EM_FORMATRANGE)
1182   UNSUPPORTED_MSG(EM_GETAUTOURLDETECT)
1183   UNSUPPORTED_MSG(EM_GETBIDIOPTIONS)
1184   UNSUPPORTED_MSG(EM_GETEDITSTYLE)
1185   UNSUPPORTED_MSG(EM_GETIMECOMPMODE)
1186   /* UNSUPPORTED_MSG(EM_GETIMESTATUS) missing in Wine headers */
1187   UNSUPPORTED_MSG(EM_GETLANGOPTIONS)
1188   UNSUPPORTED_MSG(EM_GETLIMITTEXT)
1189   UNSUPPORTED_MSG(EM_GETLINE)
1190   /* UNSUPPORTED_MSG(EM_GETOLEINTERFACE) separate stub */
1191   UNSUPPORTED_MSG(EM_GETOPTIONS)
1192   UNSUPPORTED_MSG(EM_GETPASSWORDCHAR)
1193   UNSUPPORTED_MSG(EM_GETREDONAME)
1194   UNSUPPORTED_MSG(EM_GETSCROLLPOS)
1195   UNSUPPORTED_MSG(EM_GETTEXTMODE)
1196   UNSUPPORTED_MSG(EM_GETTYPOGRAPHYOPTIONS)
1197   UNSUPPORTED_MSG(EM_GETUNDONAME)
1198   UNSUPPORTED_MSG(EM_GETWORDBREAKPROCEX)
1199   UNSUPPORTED_MSG(EM_HIDESELECTION)
1200   UNSUPPORTED_MSG(EM_LIMITTEXT) /* also known as EM_SETLIMITTEXT */
1201   UNSUPPORTED_MSG(EM_PASTESPECIAL)
1202   UNSUPPORTED_MSG(EM_SCROLL)
1203   UNSUPPORTED_MSG(EM_SCROLLCARET)
1204   UNSUPPORTED_MSG(EM_SELECTIONTYPE)
1205   UNSUPPORTED_MSG(EM_SETBIDIOPTIONS)
1206   UNSUPPORTED_MSG(EM_SETEDITSTYLE)
1207   UNSUPPORTED_MSG(EM_SETFONTSIZE)
1208   UNSUPPORTED_MSG(EM_SETLANGOPTIONS)
1209   UNSUPPORTED_MSG(EM_SETOLECALLBACK)
1210   UNSUPPORTED_MSG(EM_SETOPTIONS)
1211   UNSUPPORTED_MSG(EM_SETPALETTE)
1212   UNSUPPORTED_MSG(EM_SETPASSWORDCHAR)
1213   UNSUPPORTED_MSG(EM_SETSCROLLPOS)
1214   UNSUPPORTED_MSG(EM_SETTABSTOPS)
1215   UNSUPPORTED_MSG(EM_SETTARGETDEVICE)
1216   UNSUPPORTED_MSG(EM_SETTEXTMODE)
1217   UNSUPPORTED_MSG(EM_SETTYPOGRAPHYOPTIONS)
1218   UNSUPPORTED_MSG(EM_SETUNDOLIMIT)
1219   UNSUPPORTED_MSG(EM_SETWORDBREAKPROCEX)
1220   UNSUPPORTED_MSG(EM_SHOWSCROLLBAR)
1221   UNSUPPORTED_MSG(WM_SETFONT)
1222   UNSUPPORTED_MSG(WM_STYLECHANGING)
1223   UNSUPPORTED_MSG(WM_STYLECHANGED)
1224 /*  UNSUPPORTED_MSG(WM_UNICHAR) FIXME missing in Wine headers */
1225
1226 /* Messages specific to Richedit controls */
1227
1228   case EM_STREAMIN:
1229    return ME_StreamIn(editor, wParam, (EDITSTREAM*)lParam);
1230   case EM_STREAMOUT:
1231    return ME_StreamOut(editor, wParam, (EDITSTREAM *)lParam);
1232   case WM_GETDLGCODE:
1233   {
1234     UINT code = DLGC_WANTCHARS|DLGC_WANTARROWS;
1235     if (GetWindowLongW(hWnd, GWL_STYLE)&ES_WANTRETURN)
1236       code |= 0; /* FIXME what can we do here ? ask for messages and censor them ? */
1237     return code;
1238   }
1239   case WM_NCCREATE:
1240   {
1241     CREATESTRUCTW *pcs = (CREATESTRUCTW *)lParam;
1242     TRACE("WM_NCCREATE: style 0x%08lx\n", pcs->style);
1243     editor = ME_MakeEditor(hWnd);
1244     SetWindowLongW(hWnd, 0, (long)editor);
1245     pcs = 0; /* ignore */
1246     return TRUE;
1247   }
1248   case EM_EMPTYUNDOBUFFER:
1249     ME_EmptyUndoStack(editor);
1250     return 0;
1251   case EM_GETSEL:
1252   {
1253     /* Note: wParam/lParam can be NULL */
1254     UINT from, to;
1255     PUINT pfrom = wParam ? (PUINT)wParam : &from;
1256     PUINT pto = lParam ? (PUINT)lParam : &to;
1257     ME_GetSelection(editor, (int *)pfrom, (int *)pto);
1258     if ((*pfrom|*pto) & 0xFFFF0000)
1259       return -1;
1260     return MAKELONG(*pfrom,*pto);
1261   }
1262   case EM_EXGETSEL:
1263   {
1264     CHARRANGE *pRange = (CHARRANGE *)lParam;
1265     ME_GetSelection(editor, (int *)&pRange->cpMin, (int *)&pRange->cpMax);
1266     TRACE("EM_EXGETSEL = (%ld,%ld)\n", pRange->cpMin, pRange->cpMax);
1267     return 0;
1268   }
1269   case EM_CANUNDO:
1270     return editor->pUndoStack != NULL;
1271   case EM_CANREDO:
1272     return editor->pRedoStack != NULL;
1273   case WM_UNDO: /* FIXME: actually not the same */
1274   case EM_UNDO:
1275     ME_Undo(editor);
1276     return 0;
1277   case EM_REDO:
1278     ME_Redo(editor);
1279     return 0;
1280   case EM_SETSEL:
1281   {
1282     ME_InvalidateSelection(editor);
1283     ME_SetSelection(editor, wParam, lParam);
1284     ME_InvalidateSelection(editor);
1285     ME_SendSelChange(editor);
1286     return 0;
1287   }
1288   case EM_EXSETSEL:
1289   {
1290     CHARRANGE *pRange = (CHARRANGE *)lParam;
1291     TRACE("EM_EXSETSEL (%ld,%ld)\n", pRange->cpMin, pRange->cpMax);
1292     ME_InvalidateSelection(editor);
1293     ME_SetSelection(editor, pRange->cpMin, pRange->cpMax);
1294     ME_InvalidateSelection(editor);
1295     ME_SendSelChange(editor);
1296     return 0;
1297   }
1298   case EM_SETTEXTEX:
1299   {
1300     LPWSTR wszText = (LPWSTR)lParam;
1301     SETTEXTEX *pStruct = (SETTEXTEX *)wParam;
1302     size_t len = lstrlenW(wszText);
1303     int from, to;
1304     ME_Style *style;
1305     TRACE("EM_SETTEXEX - %s, flags %d, cp %d\n", debugstr_w(wszText), (int)pStruct->flags, pStruct->codepage);
1306     if (pStruct->codepage != 1200) {
1307       FIXME("EM_SETTEXTEX only supports unicode right now!\n");
1308       return 0;
1309     }
1310     /* FIXME: this should support RTF strings too, according to MSDN */
1311     if (pStruct->flags & ST_SELECTION) {
1312       ME_GetSelection(editor, &from, &to);
1313       style = ME_GetSelectionInsertStyle(editor);
1314       ME_InternalDeleteText(editor, from, to - from);
1315       ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1316       ME_ReleaseStyle(style);
1317     }
1318     else {
1319       ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1320       ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
1321       len = 1;
1322     }
1323     ME_CommitUndo(editor);
1324     if (!(pStruct->flags & ST_KEEPUNDO))
1325       ME_EmptyUndoStack(editor);
1326     ME_UpdateRepaint(editor);
1327     return len;
1328   }
1329   case EM_SETBKGNDCOLOR:
1330   {
1331     LRESULT lColor = ME_GetBackColor(editor);
1332     if (editor->rgbBackColor != -1)
1333       DeleteObject(editor->hbrBackground);
1334     if (wParam)
1335     {
1336       editor->rgbBackColor = -1;
1337       editor->hbrBackground = GetSysColorBrush(COLOR_WINDOW);
1338     }
1339     else
1340     {
1341       editor->rgbBackColor = lParam;
1342       editor->hbrBackground = CreateSolidBrush(editor->rgbBackColor);
1343     }
1344     if (editor->bRedraw)
1345     {
1346       InvalidateRect(hWnd, NULL, TRUE);
1347       UpdateWindow(hWnd);
1348     }
1349     return lColor;
1350   }
1351   case EM_GETMODIFY:
1352     return editor->nModifyStep == 0 ? 0 : 1;
1353   case EM_SETMODIFY:
1354   {
1355     if (wParam)
1356       editor->nModifyStep = 0x80000000;
1357     else
1358       editor->nModifyStep = 0;
1359
1360     return 0;
1361   }
1362   case EM_SETREADONLY:
1363   {
1364     long nStyle = GetWindowLongW(hWnd, GWL_STYLE);
1365     if (wParam)
1366       nStyle |= ES_READONLY;
1367     else
1368       nStyle &= ~ES_READONLY;
1369     SetWindowLongW(hWnd, GWL_STYLE, nStyle);
1370     return 0;
1371   }
1372   case EM_SETEVENTMASK:
1373   {
1374     DWORD nOldMask = editor->nEventMask;
1375
1376     editor->nEventMask = lParam;
1377     return nOldMask;
1378   }
1379   case EM_GETEVENTMASK:
1380     return editor->nEventMask;
1381   case EM_SETCHARFORMAT:
1382   {
1383     CHARFORMAT2W buf, *p;
1384     BOOL bRepaint = TRUE;
1385     p = ME_ToCF2W(&buf, (CHARFORMAT2W *)lParam);
1386     if (!wParam)
1387       ME_SetDefaultCharFormat(editor, p);
1388     else if (wParam == (SCF_WORD | SCF_SELECTION))
1389       FIXME("EM_SETCHARFORMAT: word selection not supported\n");
1390     else if (wParam == SCF_ALL)
1391       ME_SetCharFormat(editor, 0, ME_GetTextLength(editor), p);
1392     else {
1393       int from, to;
1394       ME_GetSelection(editor, &from, &to);
1395       bRepaint = (from != to);
1396       ME_SetSelectionCharFormat(editor, p);
1397     }
1398     ME_CommitUndo(editor);
1399     if (bRepaint)
1400       ME_UpdateRepaint(editor);
1401     return 0;
1402   }
1403   case EM_GETCHARFORMAT:
1404   {
1405     CHARFORMAT2W tmp, *dst = (CHARFORMAT2W *)lParam;
1406     if (dst->cbSize != sizeof(CHARFORMATA) &&
1407         dst->cbSize != sizeof(CHARFORMATW) &&
1408         dst->cbSize != sizeof(CHARFORMAT2A) &&
1409         dst->cbSize != sizeof(CHARFORMAT2W))
1410       return 0;
1411     tmp.cbSize = sizeof(tmp);
1412     if (!wParam)
1413       ME_GetDefaultCharFormat(editor, &tmp);
1414     else
1415       ME_GetSelectionCharFormat(editor, &tmp);
1416     ME_CopyToCFAny(dst, &tmp);
1417     return tmp.dwMask;
1418   }
1419   case EM_SETPARAFORMAT:
1420     ME_SetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1421     ME_UpdateRepaint(editor);
1422     ME_CommitUndo(editor);
1423     return 0;
1424   case EM_GETPARAFORMAT:
1425     ME_GetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1426     return 0;
1427   case EM_GETFIRSTVISIBLELINE:
1428   {
1429     ME_DisplayItem *p = editor->pBuffer->pFirst;
1430     int y = editor->nScrollPosY;
1431     int ypara = 0;
1432     int count = 0;
1433     int ystart, yend;
1434     while(p) {
1435       p = ME_FindItemFwd(p, diStartRowOrParagraphOrEnd);
1436       if (p->type == diTextEnd)
1437         break;
1438       if (p->type == diParagraph) {
1439         ypara = p->member.para.nYPos;
1440         continue;
1441       }
1442       ystart = ypara + p->member.row.nYPos;
1443       yend = ystart + p->member.row.nHeight;
1444       if (y < yend) {
1445         break;
1446       }
1447       count++;
1448     }
1449     return count;
1450   }
1451   case EM_LINESCROLL:
1452   {
1453     int nPos = editor->nScrollPosY, nEnd= editor->nTotalLength - editor->sizeWindow.cy;
1454     nPos += 8 * lParam; /* FIXME follow the original */
1455     if (nPos>=nEnd)
1456       nPos = nEnd;
1457     if (nPos<0)
1458       nPos = 0;
1459     if (nPos != editor->nScrollPosY) {
1460       int dy = editor->nScrollPosY - nPos;
1461       editor->nScrollPosY = nPos;
1462       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1463       if (editor->bRedraw)
1464       {
1465         ScrollWindow(hWnd, 0, dy, NULL, NULL);
1466         UpdateWindow(hWnd);
1467       }
1468     }
1469     return TRUE; /* Should return false if a single line richedit control */
1470   }
1471   case WM_CLEAR:
1472   {
1473     int from, to;
1474     ME_GetSelection(editor, &from, &to);
1475     ME_InternalDeleteText(editor, from, to-from);
1476     ME_CommitUndo(editor);
1477     ME_UpdateRepaint(editor);
1478     return 0;
1479   }
1480   case EM_REPLACESEL:
1481   {
1482     int from, to;
1483     ME_Style *style;
1484     LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
1485     size_t len = lstrlenW(wszText);
1486     TRACE("EM_REPLACESEL - %s\n", debugstr_w(wszText));
1487
1488     ME_GetSelection(editor, &from, &to);
1489     style = ME_GetSelectionInsertStyle(editor);
1490     ME_InternalDeleteText(editor, from, to-from);
1491     ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1492     ME_ReleaseStyle(style);
1493     ME_EndToUnicode(hWnd, wszText);
1494     /* drop temporary style if line end */
1495     /* FIXME question: does abc\n mean: put abc, clear temp style, put \n? (would require a change) */
1496     if (len>0 && wszText[len-1] == '\n')
1497       ME_ClearTempStyle(editor);
1498
1499     ME_CommitUndo(editor);
1500     if (!wParam)
1501       ME_EmptyUndoStack(editor);
1502     ME_UpdateRepaint(editor);
1503     return 0;
1504   }
1505   case WM_SETTEXT:
1506   {
1507     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1508     if (lParam)
1509     {
1510       LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
1511       TRACE("WM_SETTEXT lParam==%lx\n",lParam);
1512       TRACE("WM_SETTEXT - %s\n", debugstr_w(wszText)); /* debugstr_w() */
1513       if (lstrlenW(wszText) > 0)
1514       {
1515         /* uses default style! */
1516         ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
1517       }
1518       ME_EndToUnicode(hWnd, wszText);
1519     }
1520     else
1521       TRACE("WM_SETTEXT - NULL\n");
1522     ME_CommitUndo(editor);
1523     ME_EmptyUndoStack(editor);
1524     ME_SetSelection(editor, 0, 0);
1525     ME_UpdateRepaint(editor);
1526     return 0;
1527   }
1528   case EM_CANPASTE:
1529   {
1530     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1531     if (IsClipboardFormatAvailable(nRTFFormat))
1532       return TRUE;
1533     if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1534       return TRUE;
1535     return FALSE;
1536   }
1537   case WM_PASTE:
1538   {
1539     DWORD dwFormat = 0;
1540     EDITSTREAM es;
1541     ME_GlobalDestStruct gds;
1542     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1543     UINT cf = 0;
1544
1545     if (IsClipboardFormatAvailable(nRTFFormat))
1546       cf = nRTFFormat, dwFormat = SF_RTF;
1547     else if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1548       cf = CF_UNICODETEXT, dwFormat = SF_TEXT|SF_UNICODE;
1549     else
1550       return 0;
1551
1552     if (!OpenClipboard(hWnd))
1553       return 0;
1554     gds.hData = GetClipboardData(cf);
1555     gds.nLength = 0;
1556     es.dwCookie = (DWORD)&gds;
1557     es.pfnCallback = dwFormat == SF_RTF ? ME_ReadFromHGLOBALRTF : ME_ReadFromHGLOBALUnicode;
1558     SendMessageW(hWnd, EM_STREAMIN, dwFormat|SFF_SELECTION, (LPARAM)&es);
1559
1560     CloseClipboard();
1561     return 0;
1562   }
1563   case WM_CUT:
1564   case WM_COPY:
1565   {
1566     int from, to, pars;
1567     WCHAR *data;
1568     HANDLE hData;
1569     EDITSTREAM es;
1570     ME_GlobalDestStruct gds;
1571
1572     if (!OpenClipboard(hWnd))
1573       return 0;
1574
1575     EmptyClipboard();
1576     ME_GetSelection(editor, &from, &to);
1577     pars = ME_CountParagraphsBetween(editor, from, to);
1578     hData = GlobalAlloc(GMEM_MOVEABLE, sizeof(WCHAR)*(to-from+pars+1));
1579     data = (WCHAR *)GlobalLock(hData);
1580     ME_GetTextW(editor, data, from, to-from, TRUE);
1581     GlobalUnlock(hData);
1582
1583     gds.hData = GlobalAlloc(GMEM_MOVEABLE, 0);
1584     gds.nLength = 0;
1585     es.dwCookie = (DWORD)&gds;
1586     es.pfnCallback = ME_AppendToHGLOBAL;
1587     SendMessageW(hWnd, EM_STREAMOUT, SFF_SELECTION|SF_RTF, (LPARAM)&es);
1588     GlobalReAlloc(gds.hData, gds.nLength+1, 0);
1589
1590     SetClipboardData(CF_UNICODETEXT, hData);
1591     SetClipboardData(RegisterClipboardFormatA("Rich Text Format"), gds.hData);
1592
1593     CloseClipboard();
1594     if (msg == WM_CUT)
1595     {
1596       ME_InternalDeleteText(editor, from, to-from);
1597       ME_CommitUndo(editor);
1598       ME_UpdateRepaint(editor);
1599     }
1600     return 0;
1601   }
1602   case WM_GETTEXTLENGTH:
1603     return ME_GetTextLength(editor);
1604   case EM_GETTEXTLENGTHEX:
1605     return ME_GetTextLengthEx(editor, (GETTEXTLENGTHEX *)wParam);
1606   case WM_GETTEXT:
1607   {
1608     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1609     tr.chrg.cpMin = 0;
1610     tr.chrg.cpMax = wParam-1;
1611     tr.lpstrText = (WCHAR *)lParam;
1612     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1613   }
1614   case EM_GETTEXTEX:
1615   {
1616     GETTEXTEX *ex = (GETTEXTEX*)wParam;
1617     int nStart, nCount;
1618
1619     if (ex->flags & ~(GT_SELECTION | GT_USECRLF))
1620       FIXME("GETTEXTEX flags 0x%08lx not supported\n", ex->flags & ~(GT_SELECTION | GT_USECRLF));
1621
1622     if (ex->flags & GT_SELECTION)
1623     {
1624       ME_GetSelection(editor, &nStart, &nCount);
1625       nCount -= nStart;
1626       nCount = min(nCount, ex->cb - 1);
1627     }
1628     else
1629     {
1630       nStart = 0;
1631       nCount = ex->cb - 1;
1632     }
1633     if (ex->codepage == 1200 || IsWindowUnicode(hWnd))
1634     {
1635       nCount = min(nCount, ex->cb / sizeof(WCHAR) - 1);
1636       return ME_GetTextW(editor, (LPWSTR)lParam, nStart, nCount, ex->flags & GT_USECRLF);
1637     }
1638     else
1639     {
1640       /* potentially each char may be a CR, why calculate the exact value with O(N) when
1641         we can just take a bigger buffer? :) */
1642       int crlfmul = (ex->flags & GT_USECRLF) ? 2 : 1;
1643       LPWSTR buffer = HeapAlloc(GetProcessHeap(), 0, (crlfmul*nCount + 1) * sizeof(WCHAR));
1644       DWORD buflen = ex->cb;
1645       LRESULT rc;
1646       DWORD flags = 0;
1647
1648       buflen = ME_GetTextW(editor, buffer, nStart, nCount, ex->flags & GT_USECRLF);
1649       rc = WideCharToMultiByte(ex->codepage, flags, buffer, buflen, (LPSTR)lParam, ex->cb, ex->lpDefaultChar, ex->lpUsedDefaultChar);
1650
1651       HeapFree(GetProcessHeap(),0,buffer);
1652       return rc;
1653     }
1654   }
1655   case EM_GETSELTEXT:
1656   {
1657     int from, to;
1658     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1659     ME_GetSelection(editor, &from, &to);
1660     tr.chrg.cpMin = from;
1661     tr.chrg.cpMax = to;
1662     tr.lpstrText = (WCHAR *)lParam;
1663     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1664   }
1665   case EM_GETTEXTRANGE:
1666   {
1667     TEXTRANGEW *rng = (TEXTRANGEW *)lParam;
1668     TRACE("EM_GETTEXTRANGE min=%ld max=%ld unicode=%d emul1.0=%d length=%d\n",
1669       rng->chrg.cpMin, rng->chrg.cpMax, IsWindowUnicode(hWnd),
1670       editor->bEmulateVersion10, ME_GetTextLength(editor));
1671     if (IsWindowUnicode(hWnd))
1672       return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, editor->bEmulateVersion10);
1673     else
1674     {
1675       int nLen = rng->chrg.cpMax-rng->chrg.cpMin;
1676       WCHAR *p = ALLOC_N_OBJ(WCHAR, nLen+1);
1677       int nChars = ME_GetTextW(editor, p, rng->chrg.cpMin, nLen, editor->bEmulateVersion10);
1678       /* FIXME this is a potential security hole (buffer overrun)
1679          if you know more about wchar->mbyte conversion please explain
1680       */
1681       WideCharToMultiByte(CP_ACP, 0, p, nChars+1, (char *)rng->lpstrText, nLen+1, NULL, NULL);
1682       FREE_OBJ(p);
1683       return nChars;
1684     }
1685   }
1686   case EM_GETLINECOUNT:
1687   {
1688     ME_DisplayItem *item = editor->pBuffer->pFirst->next;
1689     int nRows = 0;
1690
1691     while (item != editor->pBuffer->pLast)
1692     {
1693       assert(item->type == diParagraph);
1694       nRows += item->member.para.nRows;
1695       item = item->member.para.next_para;
1696     }
1697     TRACE("EM_GETLINECOUNT: nRows==%d\n", nRows);
1698     return max(1, nRows);
1699   }
1700   case EM_LINEFROMCHAR:
1701   {
1702     if (wParam == -1)
1703       return ME_RowNumberFromCharOfs(editor, ME_GetCursorOfs(editor, 1));
1704     else
1705       return ME_RowNumberFromCharOfs(editor, wParam);
1706   }
1707   case EM_EXLINEFROMCHAR:
1708   {
1709     return ME_RowNumberFromCharOfs(editor, lParam);
1710   }
1711   case EM_LINEINDEX:
1712   {
1713     ME_DisplayItem *item, *para;
1714     int nCharOfs;
1715
1716     if (wParam == -1)
1717       item = ME_FindItemBack(editor->pCursors[0].pRun, diStartRow);
1718     else
1719       item = ME_FindRowWithNumber(editor, wParam);
1720     if (!item)
1721       return -1;
1722     para = ME_GetParagraph(item);
1723     item = ME_FindItemFwd(item, diRun);
1724     nCharOfs = para->member.para.nCharOfs + item->member.run.nCharOfs;
1725     TRACE("EM_LINEINDEX: nCharOfs==%d\n", nCharOfs);
1726     return nCharOfs;
1727   }
1728   case EM_LINELENGTH:
1729   {
1730     ME_DisplayItem *item, *item_end;
1731     int nChars = 0, nThisLineOfs = 0, nNextLineOfs = 0;
1732
1733     if (wParam > ME_GetTextLength(editor))
1734       return 0;
1735     if (wParam == -1)
1736     {
1737       FIXME("EM_LINELENGTH: returning number of unselected characters on lines with selection unsupported.\n");
1738       return 0;
1739     }
1740     item = ME_FindItemAtOffset(editor, diRun, wParam, NULL);
1741     item = ME_RowStart(item);
1742     nThisLineOfs = ME_CharOfsFromRunOfs(editor, ME_FindItemFwd(item, diRun), 0);
1743     item_end = ME_FindItemFwd(item, diStartRow);
1744     if (item_end)
1745       nNextLineOfs = ME_CharOfsFromRunOfs(editor, ME_FindItemFwd(item_end, diRun), 0);
1746     else
1747       nNextLineOfs = ME_FindItemFwd(item, diParagraphOrEnd)->member.para.nCharOfs
1748        - (editor->bEmulateVersion10?2:1);
1749     nChars = nNextLineOfs - nThisLineOfs;
1750     TRACE("EM_LINELENGTH(%d)==%d\n",wParam, nChars);
1751     return nChars;
1752   }
1753   case EM_FINDTEXT:
1754   {
1755     FINDTEXTA *ft = (FINDTEXTA *)lParam;
1756     int nChars = MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, NULL, 0);
1757     WCHAR *tmp;
1758
1759     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
1760       MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, tmp, nChars);
1761     return ME_FindText(editor, wParam, &ft->chrg, tmp, NULL);
1762   }
1763   case EM_FINDTEXTEX:
1764   {
1765     FINDTEXTEXA *ex = (FINDTEXTEXA *)lParam;
1766     int nChars = MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, NULL, 0);
1767     WCHAR *tmp;
1768
1769     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
1770       MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, tmp, nChars);
1771     return ME_FindText(editor, wParam, &ex->chrg, tmp, &ex->chrgText);
1772   }
1773   case EM_FINDTEXTW:
1774   {
1775     FINDTEXTW *ft = (FINDTEXTW *)lParam;
1776     return ME_FindText(editor, wParam, &ft->chrg, ft->lpstrText, NULL);
1777   }
1778   case EM_FINDTEXTEXW:
1779   {
1780     FINDTEXTEXW *ex = (FINDTEXTEXW *)lParam;
1781     return ME_FindText(editor, wParam, &ex->chrg, ex->lpstrText, &ex->chrgText);
1782   }
1783   case EM_GETZOOM:
1784     if (!wParam || !lParam)
1785       return FALSE;
1786     *(int *)wParam = editor->nZoomNumerator;
1787     *(int *)lParam = editor->nZoomDenominator;
1788     return TRUE;
1789   case EM_SETZOOM:
1790     return ME_SetZoom(editor, wParam, lParam);
1791   case EM_CHARFROMPOS:
1792     return ME_CharFromPos(editor, ((POINTL *)lParam)->x, ((POINTL *)lParam)->y);
1793   case EM_POSFROMCHAR:
1794   {
1795     ME_DisplayItem *pRun;
1796     int nCharOfs, nOffset, nLength;
1797     POINTL pt = {0,0};
1798
1799     nCharOfs = wParam;
1800     /* detect which API version we're dealing with */
1801     if (wParam >= 0x40000)
1802         nCharOfs = lParam;
1803     nLength = ME_GetTextLength(editor);
1804
1805     if (nCharOfs < nLength) {
1806         ME_RunOfsFromCharOfs(editor, nCharOfs, &pRun, &nOffset);
1807         assert(pRun->type == diRun);
1808         pt.y = pRun->member.run.pt.y;
1809         pt.x = pRun->member.run.pt.x + ME_PointFromChar(editor, &pRun->member.run, nOffset);
1810         pt.y += ME_GetParagraph(pRun)->member.para.nYPos;
1811     } else {
1812         pt.x = 0;
1813         pt.y = editor->pBuffer->pLast->member.para.nYPos;
1814     }
1815     if (wParam >= 0x40000) {
1816         *(POINTL *)wParam = pt;
1817     }
1818     return MAKELONG( pt.x, pt.y );
1819   }
1820   case WM_CREATE:
1821     ME_CommitUndo(editor);
1822     ME_WrapMarkedParagraphs(editor);
1823     ME_MoveCaret(editor);
1824     return 0;
1825   case WM_DESTROY:
1826     ME_DestroyEditor(editor);
1827     SetWindowLongW(hWnd, 0, 0);
1828     return 0;
1829   case WM_LBUTTONDOWN:
1830     SetFocus(hWnd);
1831     ME_LButtonDown(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1832     SetCapture(hWnd);
1833     break;
1834   case WM_MOUSEMOVE:
1835     if (GetCapture() == hWnd)
1836       ME_MouseMove(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1837     break;
1838   case WM_LBUTTONUP:
1839     if (GetCapture() == hWnd)
1840       ReleaseCapture();
1841     break;
1842   case WM_LBUTTONDBLCLK:
1843     ME_SelectWord(editor);
1844     break;
1845   case WM_PAINT:
1846     if (editor->bRedraw)
1847     {
1848       HDC hDC;
1849       PAINTSTRUCT ps;
1850
1851       hDC = BeginPaint(hWnd, &ps);
1852       ME_PaintContent(editor, hDC, FALSE, &ps.rcPaint);
1853       EndPaint(hWnd, &ps);
1854     }
1855     break;
1856   case WM_SETFOCUS:
1857     ME_ShowCaret(editor);
1858     ME_SendOldNotify(editor, EN_SETFOCUS);
1859     return 0;
1860   case WM_KILLFOCUS:
1861     ME_HideCaret(editor);
1862     ME_SendOldNotify(editor, EN_KILLFOCUS);
1863     return 0;
1864   case WM_ERASEBKGND:
1865   {
1866     if (editor->bRedraw)
1867     {
1868       HDC hDC = (HDC)wParam;
1869       RECT rc;
1870       if (GetUpdateRect(hWnd,&rc,TRUE))
1871       {
1872         FillRect(hDC, &rc, editor->hbrBackground);
1873       }
1874     }
1875     return 1;
1876   }
1877   case WM_COMMAND:
1878     TRACE("editor wnd command = %d\n", LOWORD(wParam));
1879     return 0;
1880   case WM_KEYDOWN:
1881     if (ME_KeyDown(editor, LOWORD(wParam)))
1882       return 0;
1883     goto do_default;
1884   case WM_CHAR:
1885   {
1886     WCHAR wstr = LOWORD(wParam);
1887
1888     switch (wstr)
1889     {
1890     case 3: /* Ctrl-C */
1891       SendMessageW(editor->hWnd, WM_COPY, 0, 0);
1892       return 0;
1893     }
1894
1895     if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY) {
1896       MessageBeep(MB_ICONERROR);
1897       return 0; /* FIXME really 0 ? */
1898     }
1899
1900     switch (wstr)
1901     {
1902     case 1: /* Ctrl-A */
1903       ME_SetSelection(editor, 0, -1);
1904       return 0;
1905     case 22: /* Ctrl-V */
1906       SendMessageW(editor->hWnd, WM_PASTE, 0, 0);
1907       return 0;
1908     case 24: /* Ctrl-X */
1909       SendMessageW(editor->hWnd, WM_CUT, 0, 0);
1910       return 0;
1911     case 25: /* Ctrl-Y */
1912       SendMessageW(editor->hWnd, EM_REDO, 0, 0);
1913       return 0;
1914     case 26: /* Ctrl-Z */
1915       SendMessageW(editor->hWnd, EM_UNDO, 0, 0);
1916       return 0;
1917     }
1918     if (((unsigned)wstr)>=' ' || wstr=='\r' || wstr=='\t') {
1919       /* FIXME maybe it would make sense to call EM_REPLACESEL instead ? */
1920       ME_Style *style = ME_GetInsertStyle(editor, 0);
1921       ME_SaveTempStyle(editor);
1922       ME_InsertTextFromCursor(editor, 0, &wstr, 1, style);
1923       ME_ReleaseStyle(style);
1924       ME_CommitUndo(editor);
1925       ME_UpdateRepaint(editor);
1926     }
1927     return 0;
1928   }
1929   case WM_VSCROLL:
1930   {
1931     int nPos = editor->nScrollPosY;
1932     si.cbSize = sizeof(SCROLLINFO);
1933     si.fMask = SIF_PAGE|SIF_POS|SIF_RANGE|SIF_TRACKPOS;
1934     GetScrollInfo(hWnd, SB_VERT, &si);
1935     switch(LOWORD(wParam)) {
1936     case SB_LINEUP:
1937       nPos -= 24; /* FIXME follow the original */
1938       if (nPos<0) nPos = 0;
1939       break;
1940     case SB_LINEDOWN:
1941     {
1942       int nEnd = editor->nTotalLength - editor->sizeWindow.cy;
1943       nPos += 24; /* FIXME follow the original */
1944       if (nPos>=nEnd) nPos = nEnd;
1945       break;
1946     }
1947     case SB_PAGEUP:
1948       nPos -= editor->sizeWindow.cy;
1949       if (nPos<0) nPos = 0;
1950       break;
1951     case SB_PAGEDOWN:
1952       nPos += editor->sizeWindow.cy;
1953       if (nPos>=editor->nTotalLength) nPos = editor->nTotalLength-1;
1954       break;
1955     case SB_THUMBTRACK:
1956     case SB_THUMBPOSITION:
1957       nPos = si.nTrackPos;
1958       break;
1959     }
1960     if (nPos != editor->nScrollPosY) {
1961       int dy = editor->nScrollPosY - nPos;
1962       editor->nScrollPosY = nPos;
1963       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1964       if (editor->bRedraw)
1965       {
1966         ScrollWindow(hWnd, 0, dy, NULL, NULL);
1967         UpdateWindow(hWnd);
1968       }
1969     }
1970     break;
1971   }
1972   case WM_MOUSEWHEEL:
1973   {
1974     int gcWheelDelta = 0, nPos = editor->nScrollPosY, nEnd = editor->nTotalLength - editor->sizeWindow.cy;
1975     UINT pulScrollLines;
1976     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
1977     gcWheelDelta -= GET_WHEEL_DELTA_WPARAM(wParam);
1978     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
1979       nPos += pulScrollLines * (gcWheelDelta / WHEEL_DELTA) * 8; /* FIXME follow the original */
1980     if (nPos>=nEnd)
1981       nPos = nEnd;
1982     if (nPos<0)
1983       nPos = 0;
1984     if (nPos != editor->nScrollPosY) {
1985       int dy = editor->nScrollPosY - nPos;
1986       editor->nScrollPosY = nPos;
1987       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1988       if (editor->bRedraw)
1989       {
1990         ScrollWindow(hWnd, 0, dy, NULL, NULL);
1991         UpdateWindow(hWnd);
1992       }
1993     }
1994     break;
1995   }
1996   case EM_GETRECT:
1997   {
1998     *((RECT *)lParam) = editor->rcFormat;
1999     return 0;
2000   }
2001   case EM_SETRECT:
2002   case EM_SETRECTNP:
2003   {
2004     if (lParam)
2005     {
2006       RECT *rc = (RECT *)lParam;
2007
2008       if (wParam)
2009       {
2010         editor->rcFormat.left += rc->left;
2011         editor->rcFormat.top += rc->top;
2012         editor->rcFormat.right += rc->right;
2013         editor->rcFormat.bottom += rc->bottom;
2014       }
2015       else
2016       {
2017         editor->rcFormat = *rc;
2018       }
2019     }
2020     else
2021     {
2022       GetClientRect(hWnd, &editor->rcFormat);
2023     }
2024     if (msg != EM_SETRECTNP)
2025       ME_RewrapRepaint(editor);
2026     return 0;
2027   }
2028   case EM_REQUESTRESIZE:
2029     ME_SendRequestResize(editor, TRUE);
2030     return 0;
2031   case WM_SETREDRAW:
2032     editor->bRedraw = wParam;
2033     return 0;
2034   case WM_SIZE:
2035   {
2036     GetClientRect(hWnd, &editor->rcFormat);
2037     ME_RewrapRepaint(editor);
2038     return DefWindowProcW(hWnd, msg, wParam, lParam);
2039   }
2040   case EM_GETOLEINTERFACE:
2041   {
2042     LPVOID *ppvObj = (LPVOID*) lParam;
2043     FIXME("EM_GETOLEINTERFACE %p: stub\n", ppvObj);
2044     return CreateIRichEditOle(ppvObj);
2045   }
2046   case EM_GETWORDBREAKPROC:
2047     return (LRESULT)editor->pfnWordBreak;
2048   case EM_SETWORDBREAKPROC:
2049   {
2050     EDITWORDBREAKPROCW pfnOld = editor->pfnWordBreak;
2051
2052     editor->pfnWordBreak = (EDITWORDBREAKPROCW)lParam;
2053     return (LRESULT)pfnOld;
2054   }
2055   default:
2056   do_default:
2057     return DefWindowProcW(hWnd, msg, wParam, lParam);
2058   }
2059   return 0L;
2060 }
2061
2062
2063 /******************************************************************
2064  *        RichEdit10ANSIWndProc (RICHED20.9)
2065  */
2066 LRESULT WINAPI RichEdit10ANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
2067 {
2068   LRESULT result;
2069
2070   /* FIXME: this is NOT the same as 2.0 version */
2071   result = RichEditANSIWndProc(hWnd, msg, wParam, lParam);
2072   if (msg == WM_NCCREATE)
2073   {
2074     ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
2075
2076     editor->bEmulateVersion10 = TRUE;
2077     editor->pBuffer->pLast->member.para.nCharOfs = 2;
2078   }
2079   return result;
2080 }
2081
2082 void ME_SendOldNotify(ME_TextEditor *editor, int nCode)
2083 {
2084   HWND hWnd = editor->hWnd;
2085   SendMessageA(GetParent(hWnd), WM_COMMAND, (nCode<<16)|GetWindowLongW(hWnd, GWLP_ID), (LPARAM)hWnd);
2086 }
2087
2088 int ME_CountParagraphsBetween(ME_TextEditor *editor, int from, int to)
2089 {
2090   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
2091   int i = 0;
2092
2093   while(item && item->member.para.next_para->member.para.nCharOfs <= from)
2094     item = item->member.para.next_para;
2095   if (!item)
2096     return 0;
2097   while(item && item->member.para.next_para->member.para.nCharOfs <= to) {
2098     item = item->member.para.next_para;
2099     i++;
2100   }
2101   return i;
2102 }
2103
2104
2105 int ME_GetTextW(ME_TextEditor *editor, WCHAR *buffer, int nStart, int nChars, int bCRLF)
2106 {
2107   ME_DisplayItem *item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
2108   int nWritten = 0;
2109   WCHAR *pStart = buffer;
2110
2111   if (!item) {
2112     *buffer = L'\0';
2113     return 0;
2114   }
2115
2116   if (nStart)
2117   {
2118     int nLen = ME_StrLen(item->member.run.strText) - nStart;
2119     if (nLen > nChars)
2120       nLen = nChars;
2121     CopyMemory(buffer, item->member.run.strText->szData + nStart, sizeof(WCHAR)*nLen);
2122     nChars -= nLen;
2123     nWritten += nLen;
2124     if (!nChars)
2125       return nWritten;
2126     buffer += nLen;
2127     nStart = 0;
2128     item = ME_FindItemFwd(item, diRun);
2129   }
2130
2131   while(nChars && item)
2132   {
2133     int nLen = ME_StrLen(item->member.run.strText);
2134     if (nLen > nChars)
2135       nLen = nChars;
2136
2137     if (item->member.run.nFlags & MERF_ENDPARA)
2138     {
2139       *buffer = '\r';
2140       if (bCRLF)
2141       {
2142         *(++buffer) = '\n';
2143         nWritten++;
2144       }
2145       assert(nLen == 1);
2146       /* our end paragraph consists of 2 characters now */
2147       if (editor->bEmulateVersion10)
2148         nChars--;
2149     }
2150     else
2151       CopyMemory(buffer, item->member.run.strText->szData, sizeof(WCHAR)*nLen);
2152     nChars -= nLen;
2153     nWritten += nLen;
2154     buffer += nLen;
2155
2156     if (!nChars)
2157     {
2158       TRACE("nWritten=%d, actual=%d\n", nWritten, buffer-pStart);
2159       *buffer = L'\0';
2160       return nWritten;
2161     }
2162     item = ME_FindItemFwd(item, diRun);
2163   }
2164   *buffer = L'\0';
2165   TRACE("nWritten=%d, actual=%d\n", nWritten, buffer-pStart);
2166   return nWritten;
2167 }
2168
2169 void ME_RegisterEditorClass(HINSTANCE hInstance)
2170 {
2171   BOOL bResult;
2172   WNDCLASSW wcW;
2173   WNDCLASSA wcA;
2174
2175   wcW.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
2176   wcW.lpfnWndProc = RichEditANSIWndProc;
2177   wcW.cbClsExtra = 0;
2178   wcW.cbWndExtra = 4;
2179   wcW.hInstance = NULL; /* hInstance would register DLL-local class */
2180   wcW.hIcon = NULL;
2181   wcW.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
2182   wcW.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
2183   wcW.lpszMenuName = NULL;
2184   wcW.lpszClassName = wszClassName;
2185   bResult = RegisterClassW(&wcW);
2186   assert(bResult);
2187   wcW.lpszClassName = wszClassName50;
2188   bResult = RegisterClassW(&wcW);
2189   assert(bResult);
2190
2191   wcA.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
2192   wcA.lpfnWndProc = RichEditANSIWndProc;
2193   wcA.cbClsExtra = 0;
2194   wcA.cbWndExtra = 4;
2195   wcA.hInstance = NULL; /* hInstance would register DLL-local class */
2196   wcA.hIcon = NULL;
2197   wcA.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
2198   wcA.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
2199   wcA.lpszMenuName = NULL;
2200   wcA.lpszClassName = "RichEdit20A";
2201   bResult = RegisterClassA(&wcA);
2202   assert(bResult);
2203   wcA.lpszClassName = "RichEdit50A";
2204   bResult = RegisterClassA(&wcA);
2205   assert(bResult);
2206 }
2207
2208 LRESULT WINAPI REComboWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
2209   /* FIXME: Not implemented */
2210   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
2211         hWnd, msg, get_msg_name(msg), wParam, lParam);
2212   return DefWindowProcW(hWnd, msg, wParam, lParam);
2213 }
2214
2215 LRESULT WINAPI REListWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
2216   /* FIXME: Not implemented */
2217   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
2218         hWnd, msg, get_msg_name(msg), wParam, lParam);
2219   return DefWindowProcW(hWnd, msg, wParam, lParam);
2220 }
2221
2222 /******************************************************************
2223  *        REExtendedRegisterClass (RICHED20.8)
2224  *
2225  * FIXME undocumented
2226  * Need to check for errors and implement controls and callbacks
2227  */
2228 LRESULT WINAPI REExtendedRegisterClass(void)
2229 {
2230   WNDCLASSW wcW;
2231   UINT result;
2232
2233   FIXME("semi stub\n");
2234
2235   wcW.cbClsExtra = 0;
2236   wcW.cbWndExtra = 4;
2237   wcW.hInstance = NULL;
2238   wcW.hIcon = NULL;
2239   wcW.hCursor = NULL;
2240   wcW.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
2241   wcW.lpszMenuName = NULL;
2242
2243   if (!ME_ListBoxRegistered)
2244   {
2245       wcW.style = CS_PARENTDC | CS_DBLCLKS | CS_GLOBALCLASS;
2246       wcW.lpfnWndProc = REListWndProc;
2247       wcW.lpszClassName = wszClassNameListBox;
2248       if (RegisterClassW(&wcW)) ME_ListBoxRegistered = TRUE;
2249   }
2250
2251   if (!ME_ComboBoxRegistered)
2252   {
2253       wcW.style = CS_PARENTDC | CS_DBLCLKS | CS_GLOBALCLASS | CS_VREDRAW | CS_HREDRAW;
2254       wcW.lpfnWndProc = REComboWndProc;
2255       wcW.lpszClassName = wszClassNameComboBox;
2256       if (RegisterClassW(&wcW)) ME_ComboBoxRegistered = TRUE;
2257   }
2258
2259   result = 0;
2260   if (ME_ListBoxRegistered)
2261       result += 1;
2262   if (ME_ComboBoxRegistered)
2263       result += 2;
2264
2265   return result;
2266 }