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  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 /*
  23   API implementation status:
  24
  25   Messages (ANSI versions not done yet)
  26   - EM_AUTOURLDETECT 2.0
  27   + EM_CANPASTE
  28   + EM_CANREDO 2.0
  29   + EM_CANUNDO
  30   + EM_CHARFROMPOS
  31   - EM_DISPLAYBAND
  32   + EM_EMPTYUNDOBUFFER
  33   + EM_EXGETSEL
  34   - EM_EXLIMITTEXT
  35   + EM_EXLINEFROMCHAR
  36   + EM_EXSETSEL
  37   + EM_FINDTEXT (only FR_DOWN flag implemented)
  38   + EM_FINDTEXTEX (only FR_DOWN flag implemented)
  39   - EM_FINDWORDBREAK
  40   - EM_FMTLINES
  41   - EM_FORMATRANGE
  42   - EM_GETAUTOURLDETECT 2.0
  43   - EM_GETBIDIOPTIONS 3.0
  44   - EM_GETCHARFORMAT (partly done)
  45   - EM_GETEDITSTYLE
  46   + EM_GETEVENTMASK
  47   + EM_GETFIRSTVISIBLELINE (can be optimized if needed)
  48   - EM_GETIMECOLOR 1.0asian
  49   - EM_GETIMECOMPMODE 2.0
  50   - EM_GETIMEOPTIONS 1.0asian
  51   - EM_GETIMESTATUS
  52   - EM_GETLANGOPTIONS 2.0
  53   - EM_GETLIMITTEXT
  54   - EM_GETLINE
  55   + EM_GETLINECOUNT   returns number of rows, not of paragraphs
  56   + EM_GETMODIFY
  57   - EM_GETOLEINTERFACE
  58   - EM_GETOPTIONS
  59   + EM_GETPARAFORMAT
  60   - EM_GETPASSWORDCHAR 2.0
  61   - EM_GETPUNCTUATION 1.0asian
  62   + EM_GETRECT
  63   - EM_GETREDONAME 2.0
  64   + EM_GETSEL
  65   + EM_GETSELTEXT (ANSI&Unicode)
  66   - EM_GETSCROLLPOS 3.0
  67 ! - EM_GETTHUMB
  68   - EM_GETTEXTEX 2.0
  69   + EM_GETTEXTLENGTHEX (GTL_PRECISE unimplemented)
  70   - EM_GETTEXTMODE 2.0
  71 ? + EM_GETTEXTRANGE (ANSI&Unicode)
  72   - EM_GETTYPOGRAPHYOPTIONS 3.0
  73   - EM_GETUNDONAME
  74   - EM_GETWORDBREAKPROC
  75   - EM_GETWORDBREAKPROCEX
  76   - EM_GETWORDWRAPMODE 1.0asian
  77   + EM_GETZOOM 3.0
  78   - EM_HIDESELECTION
  79   - EM_LIMITTEXT
  80   + EM_LINEFROMCHAR
  81   + EM_LINEINDEX
  82   + EM_LINELENGTH
  83   + EM_LINESCROLL
  84   - EM_PASTESPECIAL
  85   + EM_POSFROMCHAR
  86   + EM_REDO 2.0
  87   + EM_REQUESTRESIZE
  88   + EM_REPLACESEL (proper style?) ANSI&Unicode
  89   - EM_SCROLL
  90   - EM_SCROLLCARET
  91   - EM_SELECTIONTYPE
  92   - EM_SETBIDIOPTIONS 3.0
  93   + EM_SETBKGNDCOLOR
  94   - EM_SETCHARFORMAT (partly done, no ANSI)
  95   - EM_SETEDITSTYLE
  96   + EM_SETEVENTMASK (few notifications supported)
  97   - EM_SETFONTSIZE
  98   - EM_SETIMECOLOR 1.0asian
  99   - EM_SETIMEOPTIONS 1.0asian
 100   - EM_SETLANGOPTIONS 2.0
 101   - EM_SETLIMITTEXT
 102   + EM_SETMODIFY (not sure if implementation is correct)
 103   - EM_SETOLECALLBACK
 104   - EM_SETOPTIONS
 105   - EM_SETPALETTE 2.0
 106   + EM_SETPARAFORMAT
 107   - EM_SETPASSWORDCHAR 2.0
 108   - EM_SETPUNCTUATION 1.0asian
 109   + EM_SETREADONLY no beep on modification attempt
 110   + EM_SETRECT
 111   + EM_SETRECTNP (EM_SETRECT without repainting)
 112   + EM_SETSEL
 113   - EM_SETSCROLLPOS 3.0
 114   - EM_SETTABSTOPS 3.0
 115   - EM_SETTARGETDEVICE
 116   + EM_SETTEXTEX 3.0 (unicode only, no rich text insertion handling, proper style?)
 117   - EM_SETTEXTMODE 2.0
 118   - EM_SETTYPOGRAPHYOPTIONS 3.0
 119   - EM_SETUNDOLIMIT 2.0
 120   - EM_SETWORDBREAKPROC
 121   - EM_SETWORDBREAKPROCEX
 122   - EM_SETWORDWRAPMODE 1.0asian
 123   + EM_SETZOOM 3.0
 124   - EM_SHOWSCROLLBAR 2.0
 125   - EM_STOPGROUPTYPING 2.0
 126   + EM_STREAMIN
 127   + EM_STREAMOUT
 128   + EM_UNDO
 129   + WM_CHAR
 130   + WM_CLEAR
 131   + WM_COPY
 132   + WM_CUT
 133   + WM_GETDLGCODE (the current implementation is incomplete)
 134   + WM_GETTEXT (ANSI&Unicode)
 135   + WM_GETTEXTLENGTH (ANSI version sucks)
 136   + WM_PASTE
 137   - WM_SETFONT
 138   + WM_SETTEXT (resets undo stack !) (proper style?) ANSI&Unicode
 139   - WM_STYLECHANGING
 140   - WM_STYLECHANGED (things like read-only flag)
 141   - WM_UNICHAR
 142
 143   Notifications
 144
 145   * EN_CHANGE (sent from the wrong place)
 146   - EN_CORRECTTEXT
 147   - EN_DROPFILES
 148   - EN_ERRSPACE
 149   - EN_HSCROLL
 150   - EN_IMECHANGE
 151   + EN_KILLFOCUS
 152   - EN_LINK
 153   - EN_MAXTEXT
 154   - EN_MSGFILTER
 155   - EN_OLEOPFAILED
 156   - EN_PROTECTED
 157   + EN_REQUESTRESIZE
 158   - EN_SAVECLIPBOARD
 159   + EN_SELCHANGE
 160   + EN_SETFOCUS
 161   - EN_STOPNOUNDO
 162   * EN_UPDATE (sent from the wrong place)
 163   - EN_VSCROLL
 164
 165   Styles
 166
 167   - ES_AUTOHSCROLL
 168   - ES_AUTOVSCROLL
 169   - ES_CENTER
 170   - ES_DISABLENOSCROLL (scrollbar is always visible)
 171   - ES_EX_NOCALLOLEINIT
 172   - ES_LEFT
 173   - ES_MULTILINE (currently single line controls aren't supported)
 174   - ES_NOIME
 175   - ES_READONLY (I'm not sure if beeping is the proper behaviour)
 176   - ES_RIGHT
 177   - ES_SAVESEL
 178   - ES_SELFIME
 179   - ES_SUNKEN
 180   - ES_VERTICAL
 181   - ES_WANTRETURN (don't know how to do WM_GETDLGCODE part)
 182   - WS_SETFONT
 183   - WS_HSCROLL
 184   - WS_VSCROLL
 185 */
 186
 187 /*
 188  * RICHED20 TODO (incomplete):
 189  *
 190  * - messages/styles/notifications listed above
 191  * - Undo coalescing
 192  * - add remaining CHARFORMAT/PARAFORMAT fields
 193  * - right/center align should strip spaces from the beginning
 194  * - more advanced navigation (Ctrl-arrows)
 195  * - tabs
 196  * - pictures/OLE objects (not just smiling faces that lack API support ;-) )
 197  * - COM interface (looks like a major pain in the TODO list)
 198  * - calculate heights of pictures (half-done)
 199  * - horizontal scrolling (not even started)
 200  * - hysteresis during wrapping (related to scrollbars appearing/disappearing)
 201  * - find/replace
 202  * - how to implement EM_FORMATRANGE and EM_DISPLAYBAND ? (Mission Impossible)
 203  * - italic caret with italic fonts
 204  * - IME
 205  * - most notifications aren't sent at all (the most important ones are)
 206  * - when should EN_SELCHANGE be sent after text change ? (before/after EN_UPDATE?)
 207  * - WM_SETTEXT may use wrong style (but I'm 80% sure it's OK)
 208  * - EM_GETCHARFORMAT with SCF_SELECTION may not behave 100% like in original (but very close)
 209  * - full justification
 210  * - hyphenation
 211  * - tables
 212  * - ListBox & ComboBox not implemented
 213  *
 214  * Bugs that are probably fixed, but not so easy to verify:
 215  * - EN_UPDATE/EN_CHANGE are handled very incorrectly (should be OK now)
 216  * - undo for ME_JoinParagraphs doesn't store paragraph format ? (it does)
 217  * - check/fix artificial EOL logic (bCursorAtEnd, hardly logical)
 218  * - caret shouldn't be displayed when selection isn't empty
 219  * - check refcounting in style management functions (looks perfect now, but no bugs is suspicious)
 220  * - undo for setting default format (done, might be buggy)
 221  * - styles might be not released properly (looks like they work like charm, but who knows?
 222  *
 223  */
 224
 225 #include "editor.h"
 226 #include "commdlg.h"
 227 #include "ole2.h"
 228 #include "richole.h"
 229 #include "winreg.h"
 230 #define NO_SHLWAPI_STREAM
 231 #include "shlwapi.h"
 232
 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_Repaint(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 rtfBackColor:
 354       fmt.dwMask = CFM_BACKCOLOR;
 355       fmt.dwEffects = 0;
 356       if (info->rtfParam == 0)
 357         fmt.dwEffects = CFE_AUTOBACKCOLOR;
 358       else if (info->rtfParam != rtfNoParam)
 359       {
 360         RTFColor *c = RTFGetColor(info, info->rtfParam);
 361         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 362       }
 363       break;
 364     case rtfForeColor:
 365       fmt.dwMask = CFM_COLOR;
 366       fmt.dwEffects = 0;
 367       if (info->rtfParam == 0)
 368         fmt.dwEffects = CFE_AUTOCOLOR;
 369       else if (info->rtfParam != rtfNoParam)
 370       {
 371         RTFColor *c = RTFGetColor(info, info->rtfParam);
 372         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 373       }
 374       break;
 375     case rtfFontNum:
 376       if (info->rtfParam != rtfNoParam)
 377       {
 378         RTFFont *f = RTFGetFont(info, info->rtfParam);
 379         if (f)
 380         {
 381           MultiByteToWideChar(CP_ACP, 0, f->rtfFName, -1, fmt.szFaceName, sizeof(fmt.szFaceName)/sizeof(WCHAR));
 382           fmt.szFaceName[sizeof(fmt.szFaceName)/sizeof(WCHAR)-1] = '\0';
 383           fmt.bCharSet = f->rtfFCharSet;
 384           fmt.dwMask = CFM_FACE | CFM_CHARSET;
 385         }
 386       }
 387       break;
 388     case rtfFontSize:
 389       fmt.dwMask = CFM_SIZE;
 390       if (info->rtfParam != rtfNoParam)
 391         fmt.yHeight = info->rtfParam*10;
 392       break;
 393   }
 394   if (fmt.dwMask) {
 395     ME_Style *style2;
 396     RTFFlushOutputBuffer(info);
 397     /* FIXME too slow ? how come ? */
 398     style2 = ME_ApplyStyle(info->style, &fmt);
 399     ME_ReleaseStyle(info->style);
 400     info->style = style2;
 401     info->styleChanged = TRUE;
 402   }
 403 }
 404
 405 /* FIXME this function doesn't get any information about context of the RTF tag, which is very bad,
 406    the same tags mean different things in different contexts */
 407 static void ME_RTFParAttrHook(RTF_Info *info)
 408 {
 409   PARAFORMAT2 fmt;
 410   fmt.cbSize = sizeof(fmt);
 411   fmt.dwMask = 0;
 412
 413   switch(info->rtfMinor)
 414   {
 415   case rtfParDef: /* I'm not 100% sure what does it do, but I guess it restores default paragraph attributes */
 416     fmt.dwMask = PFM_ALIGNMENT | PFM_TABSTOPS | PFM_OFFSET | PFM_STARTINDENT;
 417     fmt.wAlignment = PFA_LEFT;
 418     fmt.cTabCount = 0;
 419     fmt.dxOffset = fmt.dxStartIndent = 0;
 420     break;
 421   case rtfFirstIndent:
 422     ME_GetSelectionParaFormat(info->editor, &fmt);
 423     fmt.dwMask = PFM_STARTINDENT | PFM_OFFSET;
 424     fmt.dxStartIndent += info->rtfParam + fmt.dxOffset;
 425     fmt.dxOffset = -info->rtfParam;
 426     break;
 427   case rtfLeftIndent:
 428     ME_GetSelectionParaFormat(info->editor, &fmt);
 429     fmt.dwMask = PFM_STARTINDENT;
 430     fmt.dxStartIndent = -fmt.dxOffset + info->rtfParam;
 431     break;
 432   case rtfRightIndent:
 433     fmt.dwMask = PFM_RIGHTINDENT;
 434     fmt.dxRightIndent = info->rtfParam;
 435     break;
 436   case rtfQuadLeft:
 437   case rtfQuadJust:
 438     fmt.dwMask = PFM_ALIGNMENT;
 439     fmt.wAlignment = PFA_LEFT;
 440     break;
 441   case rtfQuadRight:
 442     fmt.dwMask = PFM_ALIGNMENT;
 443     fmt.wAlignment = PFA_RIGHT;
 444     break;
 445   case rtfQuadCenter:
 446     fmt.dwMask = PFM_ALIGNMENT;
 447     fmt.wAlignment = PFA_CENTER;
 448     break;
 449   case rtfTabPos:
 450     ME_GetSelectionParaFormat(info->editor, &fmt);
 451     if (!(fmt.dwMask & PFM_TABSTOPS))
 452     {
 453       fmt.dwMask |= PFM_TABSTOPS;
 454       fmt.cTabCount = 0;
 455     }
 456     if (fmt.cTabCount < MAX_TAB_STOPS)
 457       fmt.rgxTabs[fmt.cTabCount++] = info->rtfParam;
 458     break;
 459   }
 460   if (fmt.dwMask) {
 461     RTFFlushOutputBuffer(info);
 462     /* FIXME too slow ? how come ?*/
 463     ME_SetSelectionParaFormat(info->editor, &fmt);
 464   }
 465 }
 466
 467 static void ME_RTFReadHook(RTF_Info *info) {
 468   switch(info->rtfClass)
 469   {
 470     case rtfGroup:
 471       switch(info->rtfMajor)
 472       {
 473         case rtfBeginGroup:
 474           if (info->stackTop < maxStack) {
 475             memcpy(&info->stack[info->stackTop].fmt, &info->style->fmt, sizeof(CHARFORMAT2W));
 476             info->stack[info->stackTop].codePage = info->codePage;
 477             info->stack[info->stackTop].unicodeLength = info->unicodeLength;
 478           }
 479           info->stackTop++;
 480           info->styleChanged = FALSE;
 481           break;
 482         case rtfEndGroup:
 483         {
 484           ME_Style *s;
 485           RTFFlushOutputBuffer(info);
 486           if (info->stackTop<=1) {
 487             info->rtfClass = rtfEOF;
 488             return;
 489           }
 490           info->stackTop--;
 491           assert(info->stackTop >= 0);
 492           if (info->styleChanged)
 493           {
 494             /* FIXME too slow ? how come ? */
 495             s = ME_ApplyStyle(info->style, &info->stack[info->stackTop].fmt);
 496             ME_ReleaseStyle(info->style);
 497             info->style = s;
 498             info->codePage = info->stack[info->stackTop].codePage;
 499             info->unicodeLength = info->stack[info->stackTop].unicodeLength;
 500           }
 501           break;
 502         }
 503       }
 504       break;
 505     case rtfControl:
 506       switch(info->rtfMajor)
 507       {
 508         case rtfCharAttr:
 509           ME_RTFCharAttrHook(info);
 510           break;
 511         case rtfParAttr:
 512           ME_RTFParAttrHook(info);
 513           break;
 514       }
 515       break;
 516   }
 517 }
 518
 519 void
 520 ME_StreamInFill(ME_InStream *stream)
 521 {
 522   stream->editstream->dwError = stream->editstream->pfnCallback(stream->editstream->dwCookie,
 523                                                                 (BYTE *)stream->buffer,
 524                                                                 sizeof(stream->buffer),
 525                                                                 (LONG *)&stream->dwSize);
 526   stream->dwUsed = 0;
 527 }
 528
 529 static LRESULT ME_StreamIn(ME_TextEditor *editor, DWORD format, EDITSTREAM *stream)
 530 {
 531   RTF_Info parser;
 532   ME_Style *style;
 533   int from, to, to2, nUndoMode;
 534   ME_UndoItem *pUI;
 535   int nEventMask = editor->nEventMask;
 536   ME_InStream inStream;
 537
 538   TRACE("stream==%p hWnd==%p format==0x%X\n", stream, editor->hWnd, (UINT)format);
 539   editor->nEventMask = 0;
 540
 541   ME_GetSelection(editor, &from, &to);
 542   if (format & SFF_SELECTION) {
 543     style = ME_GetSelectionInsertStyle(editor);
 544
 545     ME_InternalDeleteText(editor, from, to-from);
 546   }
 547   else {
 548     style = editor->pBuffer->pDefaultStyle;
 549     ME_AddRefStyle(style);
 550     SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 551     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
 552     from = to = 0;
 553     ME_ClearTempStyle(editor);
 554     /* FIXME restore default paragraph formatting ! */
 555   }
 556
 557   nUndoMode = editor->nUndoMode;
 558   editor->nUndoMode = umIgnore;
 559
 560   inStream.editstream = stream;
 561   inStream.editstream->dwError = 0;
 562   inStream.dwSize = 0;
 563   inStream.dwUsed = 0;
 564
 565   if (format & SF_RTF)
 566   {
 567     /* Check if it's really RTF, and if it is not, use plain text */
 568     ME_StreamInFill(&inStream);
 569     if (!inStream.editstream->dwError)
 570     {
 571       if (strncmp(inStream.buffer, "{\\rtf1", 6) && strncmp(inStream.buffer, "{\\urtf", 6))
 572       {
 573         format &= ~SF_RTF;
 574         format |= SF_TEXT;
 575       }
 576     }
 577   }
 578
 579   if (!inStream.editstream->dwError)
 580   {
 581     if (format & SF_RTF) {
 582       /* setup the RTF parser */
 583       memset(&parser, 0, sizeof parser);
 584       RTFSetEditStream(&parser, &inStream);
 585       parser.rtfFormat = format&(SF_TEXT|SF_RTF);
 586       parser.hwndEdit = editor->hWnd;
 587       parser.editor = editor;
 588       parser.style = style;
 589       WriterInit(&parser);
 590       RTFInit(&parser);
 591       RTFSetReadHook(&parser, ME_RTFReadHook);
 592       BeginFile(&parser);
 593
 594       /* do the parsing */
 595       RTFRead(&parser);
 596       RTFFlushOutputBuffer(&parser);
 597       RTFDestroy(&parser);
 598
 599       style = parser.style;
 600     }
 601     else if (format & SF_TEXT)
 602       ME_StreamInText(editor, format, &inStream, style);
 603     else
 604       ERR("EM_STREAMIN without SF_TEXT or SF_RTF\n");
 605     ME_GetSelection(editor, &to, &to2);
 606     /* put the cursor at the top */
 607     if (!(format & SFF_SELECTION))
 608       SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 609     else
 610     {
 611       /* FIXME where to put cursor now ? */
 612     }
 613   }
 614
 615   editor->nUndoMode = nUndoMode;
 616   pUI = ME_AddUndoItem(editor, diUndoDeleteRun, NULL);
 617   TRACE("from %d to %d\n", from, to);
 618   if (pUI && from < to)
 619   {
 620     pUI->nStart = from;
 621     pUI->nLen = to-from;
 622   }
 623   ME_CommitUndo(editor);
 624   ME_ReleaseStyle(style);
 625   editor->nEventMask = nEventMask;
 626   if (editor->bRedraw)
 627   {
 628     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);
 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))
 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   GetClientRect(hWnd, &ed->rcFormat);
 892   for (i=0; i<HFONT_CACHE_SIZE; i++)
 893   {
 894     ed->pFontCache[i].nRefs = 0;
 895     ed->pFontCache[i].nAge = 0;
 896     ed->pFontCache[i].hFont = NULL;
 897   }
 898   ME_CheckCharOffsets(ed);
 899   return ed;
 900 }
 901
 902 typedef struct tagME_GlobalDestStruct
 903 {
 904   HGLOBAL hData;
 905   int nLength;
 906 } ME_GlobalDestStruct;
 907
 908 static DWORD CALLBACK ME_AppendToHGLOBAL(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 909 {
 910   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 911   int nMaxSize;
 912   BYTE *pDest;
 913
 914   nMaxSize = GlobalSize(pData->hData);
 915   if (pData->nLength+cb+1 >= cb)
 916   {
 917     /* round up to 2^17 */
 918     int nNewSize = (((nMaxSize+cb+1)|0x1FFFF)+1) & 0xFFFE0000;
 919     pData->hData = GlobalReAlloc(pData->hData, nNewSize, 0);
 920   }
 921   pDest = (BYTE *)GlobalLock(pData->hData);
 922   memcpy(pDest + pData->nLength, lpBuff, cb);
 923   pData->nLength += cb;
 924   pDest[pData->nLength] = '\0';
 925   GlobalUnlock(pData->hData);
 926   *pcb = cb;
 927
 928   return 0;
 929 }
 930
 931 static DWORD CALLBACK ME_ReadFromHGLOBALUnicode(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 932 {
 933   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 934   int i;
 935   WORD *pSrc, *pDest;
 936
 937   cb = cb >> 1;
 938   pDest = (WORD *)lpBuff;
 939   pSrc = (WORD *)GlobalLock(pData->hData);
 940   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
 941     pDest[i] = pSrc[pData->nLength+i];
 942   }
 943   pData->nLength += i;
 944   *pcb = 2*i;
 945   GlobalUnlock(pData->hData);
 946   return 0;
 947 }
 948
 949 static DWORD CALLBACK ME_ReadFromHGLOBALRTF(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 950 {
 951   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
 952   int i;
 953   BYTE *pSrc, *pDest;
 954
 955   pDest = lpBuff;
 956   pSrc = (BYTE *)GlobalLock(pData->hData);
 957   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
 958     pDest[i] = pSrc[pData->nLength+i];
 959   }
 960   pData->nLength += i;
 961   *pcb = i;
 962   GlobalUnlock(pData->hData);
 963   return 0;
 964 }
 965
 966
 967 void ME_DestroyEditor(ME_TextEditor *editor)
 968 {
 969   ME_DisplayItem *pFirst = editor->pBuffer->pFirst;
 970   ME_DisplayItem *p = pFirst, *pNext = NULL;
 971   int i;
 972
 973   ME_ClearTempStyle(editor);
 974   ME_EmptyUndoStack(editor);
 975   while(p) {
 976     pNext = p->next;
 977     ME_DestroyDisplayItem(p);
 978     p = pNext;
 979   }
 980   ME_ReleaseStyle(editor->pBuffer->pDefaultStyle);
 981   for (i=0; i<HFONT_CACHE_SIZE; i++)
 982   {
 983     if (editor->pFontCache[i].hFont)
 984       DeleteObject(editor->pFontCache[i].hFont);
 985   }
 986   DeleteObject(editor->hbrBackground);
 987
 988   FREE_OBJ(editor);
 989 }
 990
 991 static WCHAR wszClassName[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '2', '0', 'W', 0};
 992 static WCHAR wszClassName50[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '5', '0', 'W', 0};
 993 static WCHAR wszClassNameListBox[] = {'R','E','L','i','s','t','B','o','x','2','0','W', 0};
 994 static WCHAR wszClassNameComboBox[] = {'R','E','C','o','m','b','o','B','o','x','2','0','W', 0};
 995
 996 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 997 {
 998     TRACE("\n");
 999     switch (fdwReason)
1000     {
1001     case DLL_PROCESS_ATTACH:
1002       DisableThreadLibraryCalls(hinstDLL);
1003       me_heap = HeapCreate (0, 0x10000, 0);
1004       ME_RegisterEditorClass(hinstDLL);
1005       break;
1006
1007     case DLL_PROCESS_DETACH:
1008       UnregisterClassW(wszClassName, 0);
1009       UnregisterClassW(wszClassName50, 0);
1010       UnregisterClassA("RichEdit20A", 0);
1011       UnregisterClassA("RichEdit50A", 0);
1012       if (ME_ListBoxRegistered)
1013           UnregisterClassW(wszClassNameListBox, 0);
1014       if (ME_ComboBoxRegistered)
1015           UnregisterClassW(wszClassNameComboBox, 0);
1016       HeapDestroy (me_heap);
1017       me_heap = NULL;
1018       break;
1019     }
1020     return TRUE;
1021 }
1022
1023
1024 #define UNSUPPORTED_MSG(e) \
1025   case e: \
1026     FIXME(#e ": stub\n"); \
1027     return DefWindowProcW(hWnd, msg, wParam, lParam);
1028
1029 static const char * const edit_messages[] = {
1030   "EM_GETSEL",
1031   "EM_SETSEL",
1032   "EM_GETRECT",
1033   "EM_SETRECT",
1034   "EM_SETRECTNP",
1035   "EM_SCROLL",
1036   "EM_LINESCROLL",
1037   "EM_SCROLLCARET",
1038   "EM_GETMODIFY",
1039   "EM_SETMODIFY",
1040   "EM_GETLINECOUNT",
1041   "EM_LINEINDEX",
1042   "EM_SETHANDLE",
1043   "EM_GETHANDLE",
1044   "EM_GETTHUMB",
1045   "EM_UNKNOWN_BF",
1046   "EM_UNKNOWN_C0",
1047   "EM_LINELENGTH",
1048   "EM_REPLACESEL",
1049   "EM_UNKNOWN_C3",
1050   "EM_GETLINE",
1051   "EM_LIMITTEXT",
1052   "EM_CANUNDO",
1053   "EM_UNDO",
1054   "EM_FMTLINES",
1055   "EM_LINEFROMCHAR",
1056   "EM_UNKNOWN_CA",
1057   "EM_SETTABSTOPS",
1058   "EM_SETPASSWORDCHAR",
1059   "EM_EMPTYUNDOBUFFER",
1060   "EM_GETFIRSTVISIBLELINE",
1061   "EM_SETREADONLY",
1062   "EM_SETWORDBREAKPROC",
1063   "EM_GETWORDBREAKPROC",
1064   "EM_GETPASSWORDCHAR",
1065   "EM_SETMARGINS",
1066   "EM_GETMARGINS",
1067   "EM_GETLIMITTEXT",
1068   "EM_POSFROMCHAR",
1069   "EM_CHARFROMPOS"
1070 };
1071
1072 static const char * const richedit_messages[] = {
1073   "EM_CANPASTE",
1074   "EM_DISPLAYBAND",
1075   "EM_EXGETSEL",
1076   "EM_EXLIMITTEXT",
1077   "EM_EXLINEFROMCHAR",
1078   "EM_EXSETSEL",
1079   "EM_FINDTEXT",
1080   "EM_FORMATRANGE",
1081   "EM_GETCHARFORMAT",
1082   "EM_GETEVENTMASK",
1083   "EM_GETOLEINTERFACE",
1084   "EM_GETPARAFORMAT",
1085   "EM_GETSELTEXT",
1086   "EM_HIDESELECTION",
1087   "EM_PASTESPECIAL",
1088   "EM_REQUESTRESIZE",
1089   "EM_SELECTIONTYPE",
1090   "EM_SETBKGNDCOLOR",
1091   "EM_SETCHARFORMAT",
1092   "EM_SETEVENTMASK",
1093   "EM_SETOLECALLBACK",
1094   "EM_SETPARAFORMAT",
1095   "EM_SETTARGETDEVICE",
1096   "EM_STREAMIN",
1097   "EM_STREAMOUT",
1098   "EM_GETTEXTRANGE",
1099   "EM_FINDWORDBREAK",
1100   "EM_SETOPTIONS",
1101   "EM_GETOPTIONS",
1102   "EM_FINDTEXTEX",
1103   "EM_GETWORDBREAKPROCEX",
1104   "EM_SETWORDBREAKPROCEX",
1105   "EM_SETUNDOLIMIT",
1106   "EM_UNKNOWN_USER_83",
1107   "EM_REDO",
1108   "EM_CANREDO",
1109   "EM_GETUNDONAME",
1110   "EM_GETREDONAME",
1111   "EM_STOPGROUPTYPING",
1112   "EM_SETTEXTMODE",
1113   "EM_GETTEXTMODE",
1114   "EM_AUTOURLDETECT",
1115   "EM_GETAUTOURLDETECT",
1116   "EM_SETPALETTE",
1117   "EM_GETTEXTEX",
1118   "EM_GETTEXTLENGTHEX",
1119   "EM_SHOWSCROLLBAR",
1120   "EM_SETTEXTEX",
1121   "EM_UNKNOWN_USER_98",
1122   "EM_UNKNOWN_USER_99",
1123   "EM_SETPUNCTUATION",
1124   "EM_GETPUNCTUATION",
1125   "EM_SETWORDWRAPMODE",
1126   "EM_GETWORDWRAPMODE",
1127   "EM_SETIMECOLOR",
1128   "EM_GETIMECOLOR",
1129   "EM_SETIMEOPTIONS",
1130   "EM_GETIMEOPTIONS",
1131   "EM_CONVPOSITION",
1132   "EM_UNKNOWN_USER_109",
1133   "EM_UNKNOWN_USER_110",
1134   "EM_UNKNOWN_USER_111",
1135   "EM_UNKNOWN_USER_112",
1136   "EM_UNKNOWN_USER_113",
1137   "EM_UNKNOWN_USER_114",
1138   "EM_UNKNOWN_USER_115",
1139   "EM_UNKNOWN_USER_116",
1140   "EM_UNKNOWN_USER_117",
1141   "EM_UNKNOWN_USER_118",
1142   "EM_UNKNOWN_USER_119",
1143   "EM_SETLANGOPTIONS",
1144   "EM_GETLANGOPTIONS",
1145   "EM_GETIMECOMPMODE",
1146   "EM_FINDTEXTW",
1147   "EM_FINDTEXTEXW",
1148   "EM_RECONVERSION",
1149   "EM_SETIMEMODEBIAS",
1150   "EM_GETIMEMODEBIAS"
1151 };
1152
1153 static const char *
1154 get_msg_name(UINT msg)
1155 {
1156   if (msg >= EM_GETSEL && msg <= EM_SETLIMITTEXT)
1157     return edit_messages[msg - EM_GETSEL];
1158   if (msg >= EM_CANPASTE && msg <= EM_GETIMEMODEBIAS)
1159     return richedit_messages[msg - EM_CANPASTE];
1160   return "";
1161 }
1162
1163 /******************************************************************
1164  *        RichEditANSIWndProc (RICHED20.10)
1165  */
1166 LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
1167   SCROLLINFO si;
1168   ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
1169
1170   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
1171         hWnd, msg, get_msg_name(msg), wParam, lParam);
1172
1173   switch(msg) {
1174
1175   UNSUPPORTED_MSG(EM_AUTOURLDETECT)
1176   UNSUPPORTED_MSG(EM_DISPLAYBAND)
1177   UNSUPPORTED_MSG(EM_EXLIMITTEXT)
1178   UNSUPPORTED_MSG(EM_FINDWORDBREAK)
1179   UNSUPPORTED_MSG(EM_FMTLINES)
1180   UNSUPPORTED_MSG(EM_FORMATRANGE)
1181   UNSUPPORTED_MSG(EM_GETAUTOURLDETECT)
1182   UNSUPPORTED_MSG(EM_GETBIDIOPTIONS)
1183   UNSUPPORTED_MSG(EM_GETEDITSTYLE)
1184   UNSUPPORTED_MSG(EM_GETIMECOMPMODE)
1185   /* UNSUPPORTED_MSG(EM_GETIMESTATUS) missing in Wine headers */
1186   UNSUPPORTED_MSG(EM_GETLANGOPTIONS)
1187   UNSUPPORTED_MSG(EM_GETLIMITTEXT)
1188   UNSUPPORTED_MSG(EM_GETLINE)
1189   /* UNSUPPORTED_MSG(EM_GETOLEINTERFACE) separate stub */
1190   UNSUPPORTED_MSG(EM_GETOPTIONS)
1191   UNSUPPORTED_MSG(EM_GETPASSWORDCHAR)
1192   UNSUPPORTED_MSG(EM_GETREDONAME)
1193   UNSUPPORTED_MSG(EM_GETSCROLLPOS)
1194   UNSUPPORTED_MSG(EM_GETTEXTMODE)
1195   UNSUPPORTED_MSG(EM_GETTYPOGRAPHYOPTIONS)
1196   UNSUPPORTED_MSG(EM_GETUNDONAME)
1197   UNSUPPORTED_MSG(EM_GETWORDBREAKPROC)
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_SETWORDBREAKPROC)
1220   UNSUPPORTED_MSG(EM_SETWORDBREAKPROCEX)
1221   UNSUPPORTED_MSG(EM_SHOWSCROLLBAR)
1222   UNSUPPORTED_MSG(WM_SETFONT)
1223   UNSUPPORTED_MSG(WM_STYLECHANGING)
1224   UNSUPPORTED_MSG(WM_STYLECHANGED)
1225 /*  UNSUPPORTED_MSG(WM_UNICHAR) FIXME missing in Wine headers */
1226
1227 /* Messages specific to Richedit controls */
1228
1229   case EM_STREAMIN:
1230    return ME_StreamIn(editor, wParam, (EDITSTREAM*)lParam);
1231   case EM_STREAMOUT:
1232    return ME_StreamOut(editor, wParam, (EDITSTREAM *)lParam);
1233   case WM_GETDLGCODE:
1234   {
1235     UINT code = DLGC_WANTCHARS|DLGC_WANTARROWS;
1236     if (GetWindowLongW(hWnd, GWL_STYLE)&ES_WANTRETURN)
1237       code |= 0; /* FIXME what can we do here ? ask for messages and censor them ? */
1238     return code;
1239   }
1240   case WM_NCCREATE:
1241   {
1242     CREATESTRUCTW *pcs = (CREATESTRUCTW *)lParam;
1243     TRACE("WM_NCCREATE: style 0x%08lx\n", pcs->style);
1244     editor = ME_MakeEditor(hWnd);
1245     SetWindowLongW(hWnd, 0, (long)editor);
1246     pcs = 0; /* ignore */
1247     return TRUE;
1248   }
1249   case EM_EMPTYUNDOBUFFER:
1250     ME_EmptyUndoStack(editor);
1251     return 0;
1252   case EM_GETSEL:
1253   {
1254     /* Note: wParam/lParam can be NULL */
1255     UINT from, to;
1256     PUINT pfrom = wParam ? (PUINT)wParam : &from;
1257     PUINT pto = lParam ? (PUINT)lParam : &to;
1258     ME_GetSelection(editor, (int *)pfrom, (int *)pto);
1259     if ((*pfrom|*pto) & 0xFFFF0000)
1260       return -1;
1261     return MAKELONG(*pfrom,*pto);
1262   }
1263   case EM_EXGETSEL:
1264   {
1265     CHARRANGE *pRange = (CHARRANGE *)lParam;
1266     ME_GetSelection(editor, (int *)&pRange->cpMin, (int *)&pRange->cpMax);
1267     TRACE("EM_EXGETSEL = (%ld,%ld)\n", pRange->cpMin, pRange->cpMax);
1268     return 0;
1269   }
1270   case EM_CANUNDO:
1271     return editor->pUndoStack != NULL;
1272   case EM_CANREDO:
1273     return editor->pRedoStack != NULL;
1274   case WM_UNDO: /* FIXME: actually not the same */
1275   case EM_UNDO:
1276     ME_Undo(editor);
1277     return 0;
1278   case EM_REDO:
1279     ME_Redo(editor);
1280     return 0;
1281   case EM_SETSEL:
1282   {
1283     ME_SetSelection(editor, wParam, lParam);
1284     ME_Repaint(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_SetSelection(editor, pRange->cpMin, pRange->cpMax);
1293     /* FIXME optimize */
1294     ME_Repaint(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     ME_Repaint(editor);
1371     return 0;
1372   }
1373   case EM_SETEVENTMASK:
1374   {
1375     DWORD nOldMask = editor->nEventMask;
1376
1377     editor->nEventMask = lParam;
1378     return nOldMask;
1379   }
1380   case EM_GETEVENTMASK:
1381     return editor->nEventMask;
1382   case EM_SETCHARFORMAT:
1383   {
1384     CHARFORMAT2W buf, *p;
1385     BOOL bRepaint = TRUE;
1386     p = ME_ToCF2W(&buf, (CHARFORMAT2W *)lParam);
1387     if (!wParam)
1388       ME_SetDefaultCharFormat(editor, p);
1389     else if (wParam == (SCF_WORD | SCF_SELECTION))
1390       FIXME("EM_SETCHARFORMAT: word selection not supported\n");
1391     else if (wParam == SCF_ALL)
1392       ME_SetCharFormat(editor, 0, ME_GetTextLength(editor), p);
1393     else {
1394       int from, to;
1395       ME_GetSelection(editor, &from, &to);
1396       bRepaint = (from != to);
1397       ME_SetSelectionCharFormat(editor, p);
1398     }
1399     ME_CommitUndo(editor);
1400     if (bRepaint)
1401       ME_UpdateRepaint(editor);
1402     return 0;
1403   }
1404   case EM_GETCHARFORMAT:
1405   {
1406     CHARFORMAT2W tmp, *dst = (CHARFORMAT2W *)lParam;
1407     if (dst->cbSize != sizeof(CHARFORMATA) &&
1408         dst->cbSize != sizeof(CHARFORMATW) &&
1409         dst->cbSize != sizeof(CHARFORMAT2A) &&
1410         dst->cbSize != sizeof(CHARFORMAT2W))
1411       return 0;
1412     tmp.cbSize = sizeof(tmp);
1413     if (!wParam)
1414       ME_GetDefaultCharFormat(editor, &tmp);
1415     else
1416       ME_GetSelectionCharFormat(editor, &tmp);
1417     ME_CopyToCFAny(dst, &tmp);
1418     return tmp.dwMask;
1419   }
1420   case EM_SETPARAFORMAT:
1421     ME_SetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1422     ME_UpdateRepaint(editor);
1423     ME_CommitUndo(editor);
1424     return 0;
1425   case EM_GETPARAFORMAT:
1426     ME_GetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1427     return 0;
1428   case EM_GETFIRSTVISIBLELINE:
1429   {
1430     ME_DisplayItem *p = editor->pBuffer->pFirst;
1431     int y = editor->nScrollPosY;
1432     int ypara = 0;
1433     int count = 0;
1434     int ystart, yend;
1435     while(p) {
1436       p = ME_FindItemFwd(p, diStartRowOrParagraphOrEnd);
1437       if (p->type == diTextEnd)
1438         break;
1439       if (p->type == diParagraph) {
1440         ypara = p->member.para.nYPos;
1441         continue;
1442       }
1443       ystart = ypara + p->member.row.nYPos;
1444       yend = ystart + p->member.row.nHeight;
1445       if (y < yend) {
1446         break;
1447       }
1448       count++;
1449     }
1450     return count;
1451   }
1452   case EM_LINESCROLL:
1453   {
1454     int nPos = editor->nScrollPosY, nEnd= editor->nTotalLength - editor->sizeWindow.cy;
1455     nPos += 8 * lParam; /* FIXME follow the original */
1456     if (nPos>=nEnd)
1457       nPos = nEnd;
1458     if (nPos<0)
1459       nPos = 0;
1460     if (nPos != editor->nScrollPosY) {
1461       int dy = editor->nScrollPosY - nPos;
1462       editor->nScrollPosY = nPos;
1463       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1464       if (editor->bRedraw)
1465       {
1466         ScrollWindow(hWnd, 0, dy, NULL, NULL);
1467         UpdateWindow(hWnd);
1468       }
1469     }
1470     return TRUE; /* Should return false if a single line richedit control */
1471   }
1472   case WM_CLEAR:
1473   {
1474     int from, to;
1475     ME_GetSelection(editor, &from, &to);
1476     ME_InternalDeleteText(editor, from, to-from);
1477     ME_CommitUndo(editor);
1478     ME_UpdateRepaint(editor);
1479     return 0;
1480   }
1481   case EM_REPLACESEL:
1482   {
1483     int from, to;
1484     ME_Style *style;
1485     LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
1486     size_t len = lstrlenW(wszText);
1487     TRACE("EM_REPLACESEL - %s\n", debugstr_w(wszText));
1488
1489     ME_GetSelection(editor, &from, &to);
1490     style = ME_GetSelectionInsertStyle(editor);
1491     ME_InternalDeleteText(editor, from, to-from);
1492     ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1493     ME_ReleaseStyle(style);
1494     ME_EndToUnicode(hWnd, wszText);
1495     /* drop temporary style if line end */
1496     /* FIXME question: does abc\n mean: put abc, clear temp style, put \n? (would require a change) */
1497     if (len>0 && wszText[len-1] == '\n')
1498       ME_ClearTempStyle(editor);
1499
1500     ME_CommitUndo(editor);
1501     if (!wParam)
1502       ME_EmptyUndoStack(editor);
1503     ME_UpdateRepaint(editor);
1504     return 0;
1505   }
1506   case WM_SETTEXT:
1507   {
1508     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1509     if (lParam)
1510     {
1511       LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
1512       TRACE("WM_SETTEXT lParam==%lx\n",lParam);
1513       TRACE("WM_SETTEXT - %s\n", debugstr_w(wszText)); /* debugstr_w() */
1514       if (lstrlenW(wszText) > 0)
1515       {
1516         /* uses default style! */
1517         ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
1518       }
1519       ME_EndToUnicode(hWnd, wszText);
1520     }
1521     else
1522       TRACE("WM_SETTEXT - NULL\n");
1523     ME_CommitUndo(editor);
1524     ME_EmptyUndoStack(editor);
1525     ME_SetSelection(editor, 0, 0);
1526     ME_UpdateRepaint(editor);
1527     return 0;
1528   }
1529   case EM_CANPASTE:
1530   {
1531     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1532     if (IsClipboardFormatAvailable(nRTFFormat))
1533       return TRUE;
1534     if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1535       return TRUE;
1536     return FALSE;
1537   }
1538   case WM_PASTE:
1539   {
1540     DWORD dwFormat = 0;
1541     EDITSTREAM es;
1542     ME_GlobalDestStruct gds;
1543     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1544     UINT cf = 0;
1545
1546     if (IsClipboardFormatAvailable(nRTFFormat))
1547       cf = nRTFFormat, dwFormat = SF_RTF;
1548     else if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1549       cf = CF_UNICODETEXT, dwFormat = SF_TEXT|SF_UNICODE;
1550     else
1551       return 0;
1552
1553     if (!OpenClipboard(hWnd))
1554       return 0;
1555     gds.hData = GetClipboardData(cf);
1556     gds.nLength = 0;
1557     es.dwCookie = (DWORD)&gds;
1558     es.pfnCallback = dwFormat == SF_RTF ? ME_ReadFromHGLOBALRTF : ME_ReadFromHGLOBALUnicode;
1559     SendMessageW(hWnd, EM_STREAMIN, dwFormat|SFF_SELECTION, (LPARAM)&es);
1560
1561     CloseClipboard();
1562     return 0;
1563   }
1564   case WM_CUT:
1565   case WM_COPY:
1566   {
1567     int from, to, pars;
1568     WCHAR *data;
1569     HANDLE hData;
1570     EDITSTREAM es;
1571     ME_GlobalDestStruct gds;
1572
1573     if (!OpenClipboard(hWnd))
1574       return 0;
1575
1576     EmptyClipboard();
1577     ME_GetSelection(editor, &from, &to);
1578     pars = ME_CountParagraphsBetween(editor, from, to);
1579     hData = GlobalAlloc(GMEM_MOVEABLE, sizeof(WCHAR)*(to-from+pars+1));
1580     data = (WCHAR *)GlobalLock(hData);
1581     ME_GetTextW(editor, data, from, to-from, TRUE);
1582     GlobalUnlock(hData);
1583
1584     gds.hData = GlobalAlloc(GMEM_MOVEABLE, 0);
1585     gds.nLength = 0;
1586     es.dwCookie = (DWORD)&gds;
1587     es.pfnCallback = ME_AppendToHGLOBAL;
1588     SendMessageW(hWnd, EM_STREAMOUT, SFF_SELECTION|SF_RTF, (LPARAM)&es);
1589     GlobalReAlloc(gds.hData, gds.nLength+1, 0);
1590
1591     SetClipboardData(CF_UNICODETEXT, hData);
1592     SetClipboardData(RegisterClipboardFormatA("Rich Text Format"), gds.hData);
1593
1594     CloseClipboard();
1595     if (msg == WM_CUT)
1596     {
1597       ME_InternalDeleteText(editor, from, to-from);
1598       ME_CommitUndo(editor);
1599       ME_UpdateRepaint(editor);
1600     }
1601     return 0;
1602   }
1603   case WM_GETTEXTLENGTH:
1604     return ME_GetTextLength(editor);
1605   case EM_GETTEXTLENGTHEX:
1606     return ME_GetTextLengthEx(editor, (GETTEXTLENGTHEX *)wParam);
1607   case WM_GETTEXT:
1608   {
1609     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1610     tr.chrg.cpMin = 0;
1611     tr.chrg.cpMax = wParam-1;
1612     tr.lpstrText = (WCHAR *)lParam;
1613     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1614   }
1615   case EM_GETTEXTEX:
1616   {
1617     GETTEXTEX *ex = (GETTEXTEX*)wParam;
1618     int nStart, nCount;
1619
1620     if (ex->flags & ~(GT_SELECTION | GT_USECRLF))
1621       FIXME("GETTEXTEX flags 0x%08lx not supported\n", ex->flags & ~(GT_SELECTION | GT_USECRLF));
1622
1623     if (ex->flags & GT_SELECTION)
1624     {
1625       ME_GetSelection(editor, &nStart, &nCount);
1626       nCount -= nStart;
1627       nCount = min(nCount, ex->cb - 1);
1628     }
1629     else
1630     {
1631       nStart = 0;
1632       nCount = ex->cb - 1;
1633     }
1634     if (ex->codepage == 1200 || IsWindowUnicode(hWnd))
1635     {
1636       nCount = min(nCount, ex->cb / sizeof(WCHAR) - 1);
1637       return ME_GetTextW(editor, (LPWSTR)lParam, nStart, nCount, ex->flags & GT_USECRLF);
1638     }
1639     else
1640     {
1641       /* potentially each char may be a CR, why calculate the exact value with O(N) when
1642         we can just take a bigger buffer? :) */
1643       int crlfmul = (ex->flags & GT_USECRLF) ? 2 : 1;
1644       LPWSTR buffer = HeapAlloc(GetProcessHeap(), 0, (crlfmul*nCount + 1) * sizeof(WCHAR));
1645       DWORD buflen = ex->cb;
1646       LRESULT rc;
1647       DWORD flags = 0;
1648
1649       buflen = ME_GetTextW(editor, buffer, nStart, nCount, ex->flags & GT_USECRLF);
1650       rc = WideCharToMultiByte(ex->codepage, flags, buffer, buflen, (LPSTR)lParam, ex->cb, ex->lpDefaultChar, ex->lpUsedDefaultChar);
1651
1652       HeapFree(GetProcessHeap(),0,buffer);
1653       return rc;
1654     }
1655   }
1656   case EM_GETSELTEXT:
1657   {
1658     int from, to;
1659     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1660     ME_GetSelection(editor, &from, &to);
1661     tr.chrg.cpMin = from;
1662     tr.chrg.cpMax = to;
1663     tr.lpstrText = (WCHAR *)lParam;
1664     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1665   }
1666   case EM_GETTEXTRANGE:
1667   {
1668     TEXTRANGEW *rng = (TEXTRANGEW *)lParam;
1669     TRACE("EM_GETTEXTRANGE min=%ld max=%ld unicode=%d emul1.0=%d length=%d\n",
1670       rng->chrg.cpMin, rng->chrg.cpMax, IsWindowUnicode(hWnd),
1671       editor->bEmulateVersion10, ME_GetTextLength(editor));
1672     if (IsWindowUnicode(hWnd))
1673       return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, editor->bEmulateVersion10);
1674     else
1675     {
1676       int nLen = rng->chrg.cpMax-rng->chrg.cpMin;
1677       WCHAR *p = ALLOC_N_OBJ(WCHAR, nLen+1);
1678       int nChars = ME_GetTextW(editor, p, rng->chrg.cpMin, nLen, editor->bEmulateVersion10);
1679       /* FIXME this is a potential security hole (buffer overrun)
1680          if you know more about wchar->mbyte conversion please explain
1681       */
1682       WideCharToMultiByte(CP_ACP, 0, p, nChars+1, (char *)rng->lpstrText, nLen+1, NULL, NULL);
1683       FREE_OBJ(p);
1684       return nChars;
1685     }
1686   }
1687   case EM_GETLINECOUNT:
1688   {
1689     ME_DisplayItem *item = editor->pBuffer->pFirst->next;
1690     int nRows = 0;
1691
1692     while (item != editor->pBuffer->pLast)
1693     {
1694       assert(item->type == diParagraph);
1695       nRows += item->member.para.nRows;
1696       item = item->member.para.next_para;
1697     }
1698     TRACE("EM_GETLINECOUNT: nRows==%d\n", nRows);
1699     return max(1, nRows);
1700   }
1701   case EM_LINEFROMCHAR:
1702   {
1703     if (wParam == -1)
1704       return ME_RowNumberFromCharOfs(editor, ME_GetCursorOfs(editor, 1));
1705     else
1706       return ME_RowNumberFromCharOfs(editor, wParam);
1707   }
1708   case EM_EXLINEFROMCHAR:
1709   {
1710     return ME_RowNumberFromCharOfs(editor, lParam);
1711   }
1712   case EM_LINEINDEX:
1713   {
1714     ME_DisplayItem *item, *para;
1715     int nCharOfs;
1716
1717     if (wParam == -1)
1718       item = ME_FindItemBack(editor->pCursors[0].pRun, diStartRow);
1719     else
1720       item = ME_FindRowWithNumber(editor, wParam);
1721     if (!item)
1722       return -1;
1723     para = ME_GetParagraph(item);
1724     item = ME_FindItemFwd(item, diRun);
1725     nCharOfs = para->member.para.nCharOfs + item->member.run.nCharOfs;
1726     TRACE("EM_LINEINDEX: nCharOfs==%d\n", nCharOfs);
1727     return nCharOfs;
1728   }
1729   case EM_LINELENGTH:
1730   {
1731     ME_DisplayItem *item, *item_end;
1732     int nChars = 0, nThisLineOfs = 0, nNextLineOfs = 0;
1733
1734     if (wParam > ME_GetTextLength(editor))
1735       return 0;
1736     if (wParam == -1)
1737     {
1738       FIXME("EM_LINELENGTH: returning number of unselected characters on lines with selection unsupported.\n");
1739       return 0;
1740     }
1741     item = ME_FindItemAtOffset(editor, diRun, wParam, NULL);
1742     item = ME_RowStart(item);
1743     nThisLineOfs = ME_CharOfsFromRunOfs(editor, ME_FindItemFwd(item, diRun), 0);
1744     item_end = ME_FindItemFwd(item, diStartRow);
1745     if (item_end)
1746       nNextLineOfs = ME_CharOfsFromRunOfs(editor, ME_FindItemFwd(item_end, diRun), 0);
1747     else
1748       nNextLineOfs = ME_FindItemFwd(item, diParagraphOrEnd)->member.para.nCharOfs
1749        - (editor->bEmulateVersion10?2:1);
1750     nChars = nNextLineOfs - nThisLineOfs;
1751     TRACE("EM_LINELENGTH(%d)==%d\n",wParam, nChars);
1752     return nChars;
1753   }
1754   case EM_FINDTEXT:
1755   {
1756     FINDTEXTA *ft = (FINDTEXTA *)lParam;
1757     int nChars = MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, NULL, 0);
1758     WCHAR *tmp;
1759
1760     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
1761       MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, tmp, nChars);
1762     return ME_FindText(editor, wParam, &ft->chrg, tmp, NULL);
1763   }
1764   case EM_FINDTEXTEX:
1765   {
1766     FINDTEXTEXA *ex = (FINDTEXTEXA *)lParam;
1767     int nChars = MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, NULL, 0);
1768     WCHAR *tmp;
1769
1770     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
1771       MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, tmp, nChars);
1772     return ME_FindText(editor, wParam, &ex->chrg, tmp, &ex->chrgText);
1773   }
1774   case EM_FINDTEXTW:
1775   {
1776     FINDTEXTW *ft = (FINDTEXTW *)lParam;
1777     return ME_FindText(editor, wParam, &ft->chrg, ft->lpstrText, NULL);
1778   }
1779   case EM_FINDTEXTEXW:
1780   {
1781     FINDTEXTEXW *ex = (FINDTEXTEXW *)lParam;
1782     return ME_FindText(editor, wParam, &ex->chrg, ex->lpstrText, &ex->chrgText);
1783   }
1784   case EM_GETZOOM:
1785     if (!wParam || !lParam)
1786       return FALSE;
1787     *(int *)wParam = editor->nZoomNumerator;
1788     *(int *)lParam = editor->nZoomDenominator;
1789     return TRUE;
1790   case EM_SETZOOM:
1791     return ME_SetZoom(editor, wParam, lParam);
1792   case EM_CHARFROMPOS:
1793     return ME_CharFromPos(editor, ((POINTL *)lParam)->x, ((POINTL *)lParam)->y);
1794   case EM_POSFROMCHAR:
1795   {
1796     ME_DisplayItem *pRun;
1797     int nCharOfs, nOffset, nLength;
1798     POINTL pt = {0,0};
1799
1800     nCharOfs = wParam;
1801     /* detect which API version we're dealing with */
1802     if (wParam >= 0x40000)
1803         nCharOfs = lParam;
1804     nLength = ME_GetTextLength(editor);
1805
1806     if (nCharOfs < nLength) {
1807         ME_RunOfsFromCharOfs(editor, nCharOfs, &pRun, &nOffset);
1808         assert(pRun->type == diRun);
1809         pt.y = pRun->member.run.pt.y;
1810         pt.x = pRun->member.run.pt.x + ME_PointFromChar(editor, &pRun->member.run, nOffset);
1811         pt.y += ME_GetParagraph(pRun)->member.para.nYPos;
1812     } else {
1813         pt.x = 0;
1814         pt.y = editor->pBuffer->pLast->member.para.nYPos;
1815     }
1816     if (wParam >= 0x40000) {
1817         *(POINTL *)wParam = pt;
1818     }
1819     return MAKELONG( pt.x, pt.y );
1820   }
1821   case WM_CREATE:
1822     ME_CommitUndo(editor);
1823     ME_WrapMarkedParagraphs(editor);
1824     ME_MoveCaret(editor);
1825     return 0;
1826   case WM_DESTROY:
1827     ME_DestroyEditor(editor);
1828     SetWindowLongW(hWnd, 0, 0);
1829     return 0;
1830   case WM_LBUTTONDOWN:
1831     SetFocus(hWnd);
1832     ME_LButtonDown(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1833     SetCapture(hWnd);
1834     break;
1835   case WM_MOUSEMOVE:
1836     if (GetCapture() == hWnd)
1837       ME_MouseMove(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
1838     break;
1839   case WM_LBUTTONUP:
1840     if (GetCapture() == hWnd)
1841       ReleaseCapture();
1842     break;
1843   case WM_PAINT:
1844     if (editor->bRedraw)
1845     {
1846       HDC hDC;
1847       PAINTSTRUCT ps;
1848
1849       hDC = BeginPaint(hWnd, &ps);
1850       ME_PaintContent(editor, hDC, FALSE, &ps.rcPaint);
1851       EndPaint(hWnd, &ps);
1852     }
1853     break;
1854   case WM_SETFOCUS:
1855     ME_ShowCaret(editor);
1856     ME_SendOldNotify(editor, EN_SETFOCUS);
1857     return 0;
1858   case WM_KILLFOCUS:
1859     ME_HideCaret(editor);
1860     ME_SendOldNotify(editor, EN_KILLFOCUS);
1861     return 0;
1862   case WM_ERASEBKGND:
1863   {
1864     if (editor->bRedraw)
1865     {
1866       HDC hDC = (HDC)wParam;
1867       RECT rc;
1868       if (GetUpdateRect(hWnd,&rc,TRUE))
1869       {
1870         FillRect(hDC, &rc, editor->hbrBackground);
1871       }
1872     }
1873     return 1;
1874   }
1875   case WM_COMMAND:
1876     TRACE("editor wnd command = %d\n", LOWORD(wParam));
1877     return 0;
1878   case WM_KEYDOWN:
1879     if (ME_KeyDown(editor, LOWORD(wParam)))
1880       return 0;
1881     goto do_default;
1882   case WM_CHAR:
1883   {
1884     WCHAR wstr = LOWORD(wParam);
1885
1886     switch (wstr)
1887     {
1888     case 3: /* Ctrl-C */
1889       SendMessageW(editor->hWnd, WM_COPY, 0, 0);
1890       return 0;
1891     }
1892
1893     if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY) {
1894       MessageBeep(MB_ICONERROR);
1895       return 0; /* FIXME really 0 ? */
1896     }
1897
1898     switch (wstr)
1899     {
1900     case 1: /* Ctrl-A */
1901       ME_SetSelection(editor, 0, -1);
1902       return 0;
1903     case 22: /* Ctrl-V */
1904       SendMessageW(editor->hWnd, WM_PASTE, 0, 0);
1905       return 0;
1906     case 24: /* Ctrl-X */
1907       SendMessageW(editor->hWnd, WM_CUT, 0, 0);
1908       return 0;
1909     case 25: /* Ctrl-Y */
1910       SendMessageW(editor->hWnd, EM_REDO, 0, 0);
1911       return 0;
1912     case 26: /* Ctrl-Z */
1913       SendMessageW(editor->hWnd, EM_UNDO, 0, 0);
1914       return 0;
1915     }
1916     if (((unsigned)wstr)>=' ' || wstr=='\r' || wstr=='\t') {
1917       /* FIXME maybe it would make sense to call EM_REPLACESEL instead ? */
1918       ME_Style *style = ME_GetInsertStyle(editor, 0);
1919       ME_SaveTempStyle(editor);
1920       ME_InsertTextFromCursor(editor, 0, &wstr, 1, style);
1921       ME_ReleaseStyle(style);
1922       ME_CommitUndo(editor);
1923       ME_UpdateRepaint(editor);
1924     }
1925     return 0;
1926   }
1927   case WM_VSCROLL:
1928   {
1929     int nPos = editor->nScrollPosY;
1930     si.cbSize = sizeof(SCROLLINFO);
1931     si.fMask = SIF_PAGE|SIF_POS|SIF_RANGE|SIF_TRACKPOS;
1932     GetScrollInfo(hWnd, SB_VERT, &si);
1933     switch(LOWORD(wParam)) {
1934     case SB_LINEUP:
1935       nPos -= 24; /* FIXME follow the original */
1936       if (nPos<0) nPos = 0;
1937       break;
1938     case SB_LINEDOWN:
1939     {
1940       int nEnd = editor->nTotalLength - editor->sizeWindow.cy;
1941       nPos += 24; /* FIXME follow the original */
1942       if (nPos>=nEnd) nPos = nEnd;
1943       break;
1944     }
1945     case SB_PAGEUP:
1946       nPos -= editor->sizeWindow.cy;
1947       if (nPos<0) nPos = 0;
1948       break;
1949     case SB_PAGEDOWN:
1950       nPos += editor->sizeWindow.cy;
1951       if (nPos>=editor->nTotalLength) nPos = editor->nTotalLength-1;
1952       break;
1953     case SB_THUMBTRACK:
1954     case SB_THUMBPOSITION:
1955       nPos = si.nTrackPos;
1956       break;
1957     }
1958     if (nPos != editor->nScrollPosY) {
1959       int dy = editor->nScrollPosY - nPos;
1960       editor->nScrollPosY = nPos;
1961       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1962       if (editor->bRedraw)
1963       {
1964         ScrollWindow(hWnd, 0, dy, NULL, NULL);
1965         UpdateWindow(hWnd);
1966       }
1967     }
1968     break;
1969   }
1970   case WM_MOUSEWHEEL:
1971   {
1972     int gcWheelDelta = 0, nPos = editor->nScrollPosY, nEnd = editor->nTotalLength - editor->sizeWindow.cy;
1973     UINT pulScrollLines;
1974     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
1975     gcWheelDelta -= GET_WHEEL_DELTA_WPARAM(wParam);
1976     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
1977       nPos += pulScrollLines * (gcWheelDelta / WHEEL_DELTA) * 8; /* FIXME follow the original */
1978     if (nPos>=nEnd)
1979       nPos = nEnd;
1980     if (nPos<0)
1981       nPos = 0;
1982     if (nPos != editor->nScrollPosY) {
1983       int dy = editor->nScrollPosY - nPos;
1984       editor->nScrollPosY = nPos;
1985       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1986       if (editor->bRedraw)
1987       {
1988         ScrollWindow(hWnd, 0, dy, NULL, NULL);
1989         UpdateWindow(hWnd);
1990       }
1991     }
1992     break;
1993   }
1994   case EM_GETRECT:
1995   {
1996     *((RECT *)lParam) = editor->rcFormat;
1997     return 0;
1998   }
1999   case EM_SETRECT:
2000   case EM_SETRECTNP:
2001   {
2002     if (lParam)
2003     {
2004       RECT *rc = (RECT *)lParam;
2005
2006       if (wParam)
2007       {
2008         editor->rcFormat.left += rc->left;
2009         editor->rcFormat.top += rc->top;
2010         editor->rcFormat.right += rc->right;
2011         editor->rcFormat.bottom += rc->bottom;
2012       }
2013       else
2014       {
2015         editor->rcFormat = *rc;
2016       }
2017     }
2018     else
2019     {
2020       GetClientRect(hWnd, &editor->rcFormat);
2021     }
2022     if (msg != EM_SETRECTNP)
2023       ME_RewrapRepaint(editor);
2024     return 0;
2025   }
2026   case EM_REQUESTRESIZE:
2027     ME_SendRequestResize(editor, TRUE);
2028     return 0;
2029   case WM_SETREDRAW:
2030     editor->bRedraw = wParam;
2031     return 0;
2032   case WM_SIZE:
2033   {
2034     GetClientRect(hWnd, &editor->rcFormat);
2035     ME_RewrapRepaint(editor);
2036     return DefWindowProcW(hWnd, msg, wParam, lParam);
2037   }
2038   case EM_GETOLEINTERFACE:
2039   {
2040     LPVOID *ppvObj = (LPVOID*) lParam;
2041     FIXME("EM_GETOLEINTERFACE %p: stub\n", ppvObj);
2042     return CreateIRichEditOle(ppvObj);
2043   }
2044   default:
2045   do_default:
2046     return DefWindowProcW(hWnd, msg, wParam, lParam);
2047   }
2048   return 0L;
2049 }
2050
2051
2052 /******************************************************************
2053  *        RichEdit10ANSIWndProc (RICHED20.9)
2054  */
2055 LRESULT WINAPI RichEdit10ANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
2056 {
2057   LRESULT result;
2058
2059   /* FIXME: this is NOT the same as 2.0 version */
2060   result = RichEditANSIWndProc(hWnd, msg, wParam, lParam);
2061   if (msg == WM_NCCREATE)
2062   {
2063     ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
2064
2065     editor->bEmulateVersion10 = TRUE;
2066     editor->pBuffer->pLast->member.para.nCharOfs = 2;
2067   }
2068   return result;
2069 }
2070
2071 void ME_SendOldNotify(ME_TextEditor *editor, int nCode)
2072 {
2073   HWND hWnd = editor->hWnd;
2074   SendMessageA(GetParent(hWnd), WM_COMMAND, (nCode<<16)|GetWindowLongW(hWnd, GWLP_ID), (LPARAM)hWnd);
2075 }
2076
2077 int ME_CountParagraphsBetween(ME_TextEditor *editor, int from, int to)
2078 {
2079   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
2080   int i = 0;
2081
2082   while(item && item->member.para.next_para->member.para.nCharOfs <= from)
2083     item = item->member.para.next_para;
2084   if (!item)
2085     return 0;
2086   while(item && item->member.para.next_para->member.para.nCharOfs <= to) {
2087     item = item->member.para.next_para;
2088     i++;
2089   }
2090   return i;
2091 }
2092
2093
2094 int ME_GetTextW(ME_TextEditor *editor, WCHAR *buffer, int nStart, int nChars, int bCRLF)
2095 {
2096   ME_DisplayItem *item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
2097   int nWritten = 0;
2098   WCHAR *pStart = buffer;
2099
2100   if (!item) {
2101     *buffer = L'\0';
2102     return 0;
2103   }
2104
2105   if (nStart)
2106   {
2107     int nLen = ME_StrLen(item->member.run.strText) - nStart;
2108     if (nLen > nChars)
2109       nLen = nChars;
2110     CopyMemory(buffer, item->member.run.strText->szData + nStart, sizeof(WCHAR)*nLen);
2111     nChars -= nLen;
2112     nWritten += nLen;
2113     if (!nChars)
2114       return nWritten;
2115     buffer += nLen;
2116     nStart = 0;
2117     item = ME_FindItemFwd(item, diRun);
2118   }
2119
2120   while(nChars && item)
2121   {
2122     int nLen = ME_StrLen(item->member.run.strText);
2123     if (nLen > nChars)
2124       nLen = nChars;
2125
2126     if (item->member.run.nFlags & MERF_ENDPARA)
2127     {
2128       *buffer = '\r';
2129       if (bCRLF)
2130       {
2131         *(++buffer) = '\n';
2132         nWritten++;
2133       }
2134       assert(nLen == 1);
2135       /* our end paragraph consists of 2 characters now */
2136       if (editor->bEmulateVersion10)
2137         nChars--;
2138     }
2139     else
2140       CopyMemory(buffer, item->member.run.strText->szData, sizeof(WCHAR)*nLen);
2141     nChars -= nLen;
2142     nWritten += nLen;
2143     buffer += nLen;
2144
2145     if (!nChars)
2146     {
2147       TRACE("nWritten=%d, actual=%d\n", nWritten, buffer-pStart);
2148       *buffer = L'\0';
2149       return nWritten;
2150     }
2151     item = ME_FindItemFwd(item, diRun);
2152   }
2153   *buffer = L'\0';
2154   TRACE("nWritten=%d, actual=%d\n", nWritten, buffer-pStart);
2155   return nWritten;
2156 }
2157
2158 void ME_RegisterEditorClass(HINSTANCE hInstance)
2159 {
2160   BOOL bResult;
2161   WNDCLASSW wcW;
2162   WNDCLASSA wcA;
2163
2164   wcW.style = CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
2165   wcW.lpfnWndProc = RichEditANSIWndProc;
2166   wcW.cbClsExtra = 0;
2167   wcW.cbWndExtra = 4;
2168   wcW.hInstance = NULL; /* hInstance would register DLL-local class */
2169   wcW.hIcon = NULL;
2170   wcW.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
2171   wcW.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
2172   wcW.lpszMenuName = NULL;
2173   wcW.lpszClassName = wszClassName;
2174   bResult = RegisterClassW(&wcW);
2175   assert(bResult);
2176   wcW.lpszClassName = wszClassName50;
2177   bResult = RegisterClassW(&wcW);
2178   assert(bResult);
2179
2180   wcA.style = CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
2181   wcA.lpfnWndProc = RichEditANSIWndProc;
2182   wcA.cbClsExtra = 0;
2183   wcA.cbWndExtra = 4;
2184   wcA.hInstance = NULL; /* hInstance would register DLL-local class */
2185   wcA.hIcon = NULL;
2186   wcA.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
2187   wcA.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
2188   wcA.lpszMenuName = NULL;
2189   wcA.lpszClassName = "RichEdit20A";
2190   bResult = RegisterClassA(&wcA);
2191   assert(bResult);
2192   wcA.lpszClassName = "RichEdit50A";
2193   bResult = RegisterClassA(&wcA);
2194   assert(bResult);
2195 }
2196 /******************************************************************
2197  *        CreateTextServices (RICHED20.4)
2198  *
2199  * FIXME should be ITextHost instead of void*
2200  */
2201 HRESULT WINAPI CreateTextServices(IUnknown *punkOuter, void *pITextHost,
2202     IUnknown **ppUnk)
2203 {
2204   FIXME("stub\n");
2205   /* FIXME should support aggregation */
2206   if (punkOuter)
2207     return CLASS_E_NOAGGREGATION;
2208
2209   return E_FAIL; /* E_NOTIMPL isn't allowed by MSDN */
2210 }
2211
2212 LRESULT WINAPI REComboWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
2213   /* FIXME: Not implemented */
2214   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
2215         hWnd, msg, get_msg_name(msg), wParam, lParam);
2216   return DefWindowProcW(hWnd, msg, wParam, lParam);
2217 }
2218
2219 LRESULT WINAPI REListWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
2220   /* FIXME: Not implemented */
2221   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
2222         hWnd, msg, get_msg_name(msg), wParam, lParam);
2223   return DefWindowProcW(hWnd, msg, wParam, lParam);
2224 }
2225
2226 /******************************************************************
2227  *        REExtendedRegisterClass (RICHED20.8)
2228  *
2229  * FIXME undocumented
2230  * Need to check for errors and implement controls and callbacks
2231  */
2232 LRESULT WINAPI REExtendedRegisterClass(void)
2233 {
2234   WNDCLASSW wcW;
2235   UINT result;
2236
2237   FIXME("semi stub\n");
2238
2239   wcW.cbClsExtra = 0;
2240   wcW.cbWndExtra = 4;
2241   wcW.hInstance = NULL;
2242   wcW.hIcon = NULL;
2243   wcW.hCursor = NULL;
2244   wcW.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
2245   wcW.lpszMenuName = NULL;
2246
2247   if (!ME_ListBoxRegistered)
2248   {
2249       wcW.style = CS_PARENTDC | CS_DBLCLKS | CS_GLOBALCLASS;
2250       wcW.lpfnWndProc = REListWndProc;
2251       wcW.lpszClassName = wszClassNameListBox;
2252       if (RegisterClassW(&wcW)) ME_ListBoxRegistered = TRUE;
2253   }
2254
2255   if (!ME_ComboBoxRegistered)
2256   {
2257       wcW.style = CS_PARENTDC | CS_DBLCLKS | CS_GLOBALCLASS | CS_VREDRAW | CS_HREDRAW;
2258       wcW.lpfnWndProc = REComboWndProc;
2259       wcW.lpszClassName = wszClassNameComboBox;
2260       if (RegisterClassW(&wcW)) ME_ComboBoxRegistered = TRUE;
2261   }
2262
2263   result = 0;
2264   if (ME_ListBoxRegistered)
2265       result += 1;
2266   if (ME_ComboBoxRegistered)
2267       result += 2;
2268
2269   return result;
2270 }