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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 /*
  24   API implementation status:
  25
  26   Messages (ANSI versions not done yet)
  27   + EM_AUTOURLDETECT 2.0
  28   + EM_CANPASTE
  29   + EM_CANREDO 2.0
  30   + EM_CANUNDO
  31   + EM_CHARFROMPOS
  32   - EM_DISPLAYBAND
  33   + EM_EMPTYUNDOBUFFER
  34   + EM_EXGETSEL
  35   - EM_EXLIMITTEXT
  36   + EM_EXLINEFROMCHAR
  37   + EM_EXSETSEL
  38   + EM_FINDTEXT (only FR_DOWN flag implemented)
  39   + EM_FINDTEXTEX (only FR_DOWN flag implemented)
  40   - EM_FINDWORDBREAK
  41   - EM_FMTLINES
  42   - EM_FORMATRANGE
  43   + EM_GETAUTOURLDETECT 2.0
  44   - EM_GETBIDIOPTIONS 3.0
  45   - EM_GETCHARFORMAT (partly done)
  46   - EM_GETEDITSTYLE
  47   + EM_GETEVENTMASK
  48   + EM_GETFIRSTVISIBLELINE (can be optimized if needed)
  49   - EM_GETIMECOLOR 1.0asian
  50   - EM_GETIMECOMPMODE 2.0
  51   - EM_GETIMEOPTIONS 1.0asian
  52   - EM_GETIMESTATUS
  53   - EM_GETLANGOPTIONS 2.0
  54   - EM_GETLIMITTEXT
  55   - EM_GETLINE
  56   + EM_GETLINECOUNT   returns number of rows, not of paragraphs
  57   + EM_GETMODIFY
  58   - EM_GETOLEINTERFACE
  59   + EM_GETOPTIONS
  60   + EM_GETPARAFORMAT
  61   - EM_GETPASSWORDCHAR 2.0
  62   - EM_GETPUNCTUATION 1.0asian
  63   + EM_GETRECT
  64   - EM_GETREDONAME 2.0
  65   + EM_GETSEL
  66   + EM_GETSELTEXT (ANSI&Unicode)
  67   + EM_GETSCROLLPOS 3.0 (only Y value valid)
  68 ! - EM_GETTHUMB
  69   - EM_GETTEXTEX 2.0
  70   + EM_GETTEXTLENGTHEX (GTL_PRECISE unimplemented)
  71   - EM_GETTEXTMODE 2.0
  72 ? + EM_GETTEXTRANGE (ANSI&Unicode)
  73   - EM_GETTYPOGRAPHYOPTIONS 3.0
  74   - EM_GETUNDONAME
  75   + EM_GETWORDBREAKPROC
  76   - EM_GETWORDBREAKPROCEX
  77   - EM_GETWORDWRAPMODE 1.0asian
  78   + EM_GETZOOM 3.0
  79   + EM_HIDESELECTION
  80   - EM_LIMITTEXT
  81   + EM_LINEFROMCHAR
  82   + EM_LINEINDEX
  83   + EM_LINELENGTH
  84   + EM_LINESCROLL
  85   - EM_PASTESPECIAL
  86   + EM_POSFROMCHAR
  87   + EM_REDO 2.0
  88   + EM_REQUESTRESIZE
  89   + EM_REPLACESEL (proper style?) ANSI&Unicode
  90   - EM_SCROLL
  91   + EM_SCROLLCARET
  92   - EM_SELECTIONTYPE
  93   - EM_SETBIDIOPTIONS 3.0
  94   + EM_SETBKGNDCOLOR
  95   - EM_SETCHARFORMAT (partly done, no ANSI)
  96   - EM_SETEDITSTYLE
  97   + EM_SETEVENTMASK (few notifications supported)
  98   - EM_SETFONTSIZE
  99   - EM_SETIMECOLOR 1.0asian
 100   - EM_SETIMEOPTIONS 1.0asian
 101   - EM_SETLANGOPTIONS 2.0
 102   - EM_SETLIMITTEXT
 103   + EM_SETMODIFY (not sure if implementation is correct)
 104   - EM_SETOLECALLBACK
 105   + EM_SETOPTIONS (partially implemented)
 106   - EM_SETPALETTE 2.0
 107   + EM_SETPARAFORMAT
 108   - EM_SETPASSWORDCHAR 2.0
 109   - EM_SETPUNCTUATION 1.0asian
 110   + EM_SETREADONLY no beep on modification attempt
 111   + EM_SETRECT
 112   + EM_SETRECTNP (EM_SETRECT without repainting)
 113   + EM_SETSEL
 114   - EM_SETSCROLLPOS 3.0
 115   - EM_SETTABSTOPS 3.0
 116   - EM_SETTARGETDEVICE
 117   + EM_SETTEXTEX 3.0 (unicode only, no rich text insertion handling, proper style?)
 118   - EM_SETTEXTMODE 2.0
 119   - EM_SETTYPOGRAPHYOPTIONS 3.0
 120   + EM_SETUNDOLIMIT 2.0
 121   + EM_SETWORDBREAKPROC (used only for word movement at the moment)
 122   - EM_SETWORDBREAKPROCEX
 123   - EM_SETWORDWRAPMODE 1.0asian
 124   + EM_SETZOOM 3.0
 125   - EM_SHOWSCROLLBAR 2.0
 126   - EM_STOPGROUPTYPING 2.0
 127   + EM_STREAMIN
 128   + EM_STREAMOUT
 129   + EM_UNDO
 130   + WM_CHAR
 131   + WM_CLEAR
 132   + WM_COPY
 133   + WM_CUT
 134   + WM_GETDLGCODE (the current implementation is incomplete)
 135   + WM_GETTEXT (ANSI&Unicode)
 136   + WM_GETTEXTLENGTH (ANSI version sucks)
 137   + WM_PASTE
 138   - WM_SETFONT
 139   + WM_SETTEXT (resets undo stack !) (proper style?) ANSI&Unicode
 140   - WM_STYLECHANGING
 141   - WM_STYLECHANGED (things like read-only flag)
 142   - WM_UNICHAR
 143
 144   Notifications
 145
 146   * EN_CHANGE (sent from the wrong place)
 147   - EN_CORRECTTEXT
 148   - EN_DROPFILES
 149   - EN_ERRSPACE
 150   - EN_HSCROLL
 151   - EN_IMECHANGE
 152   + EN_KILLFOCUS
 153   - EN_LINK
 154   - EN_MAXTEXT
 155   - EN_MSGFILTER
 156   - EN_OLEOPFAILED
 157   - EN_PROTECTED
 158   + EN_REQUESTRESIZE
 159   - EN_SAVECLIPBOARD
 160   + EN_SELCHANGE
 161   + EN_SETFOCUS
 162   - EN_STOPNOUNDO
 163   * EN_UPDATE (sent from the wrong place)
 164   - EN_VSCROLL
 165
 166   Styles
 167
 168   - ES_AUTOHSCROLL
 169   - ES_AUTOVSCROLL
 170   - ES_CENTER
 171   - ES_DISABLENOSCROLL (scrollbar is always visible)
 172   - ES_EX_NOCALLOLEINIT
 173   - ES_LEFT
 174   - ES_MULTILINE (currently single line controls aren't supported)
 175   - ES_NOIME
 176   - ES_READONLY (I'm not sure if beeping is the proper behaviour)
 177   - ES_RIGHT
 178   - ES_SAVESEL
 179   - ES_SELFIME
 180   - ES_SUNKEN
 181   - ES_VERTICAL
 182   - ES_WANTRETURN (don't know how to do WM_GETDLGCODE part)
 183   - WS_SETFONT
 184   - WS_HSCROLL
 185   - WS_VSCROLL
 186 */
 187
 188 /*
 189  * RICHED20 TODO (incomplete):
 190  *
 191  * - messages/styles/notifications listed above
 192  * - Undo coalescing
 193  * - add remaining CHARFORMAT/PARAFORMAT fields
 194  * - right/center align should strip spaces from the beginning
 195  * - pictures/OLE objects (not just smiling faces that lack API support ;-) )
 196  * - COM interface (looks like a major pain in the TODO list)
 197  * - calculate heights of pictures (half-done)
 198  * - horizontal scrolling (not even started)
 199  * - hysteresis during wrapping (related to scrollbars appearing/disappearing)
 200  * - find/replace
 201  * - how to implement EM_FORMATRANGE and EM_DISPLAYBAND ? (Mission Impossible)
 202  * - italic caret with italic fonts
 203  * - IME
 204  * - most notifications aren't sent at all (the most important ones are)
 205  * - when should EN_SELCHANGE be sent after text change ? (before/after EN_UPDATE?)
 206  * - WM_SETTEXT may use wrong style (but I'm 80% sure it's OK)
 207  * - EM_GETCHARFORMAT with SCF_SELECTION may not behave 100% like in original (but very close)
 208  * - full justification
 209  * - hyphenation
 210  * - tables
 211  * - ListBox & ComboBox not implemented
 212  *
 213  * Bugs that are probably fixed, but not so easy to verify:
 214  * - EN_UPDATE/EN_CHANGE are handled very incorrectly (should be OK now)
 215  * - undo for ME_JoinParagraphs doesn't store paragraph format ? (it does)
 216  * - check/fix artificial EOL logic (bCursorAtEnd, hardly logical)
 217  * - caret shouldn't be displayed when selection isn't empty
 218  * - check refcounting in style management functions (looks perfect now, but no bugs is suspicious)
 219  * - undo for setting default format (done, might be buggy)
 220  * - styles might be not released properly (looks like they work like charm, but who knows?
 221  *
 222  */
 223
 224 #include "editor.h"
 225 #include "commdlg.h"
 226 #include "winreg.h"
 227 #define NO_SHLWAPI_STREAM
 228 #include "shlwapi.h"
 229 #include "imm.h"
 230 #include "textserv.h"
 231 #include "rtf.h"
 232
 233 #define STACK_SIZE_DEFAULT  100
 234 #define STACK_SIZE_MAX     1000
 235
 236 WINE_DEFAULT_DEBUG_CHANNEL(richedit);
 237
 238 int me_debug = 0;
 239 HANDLE me_heap = NULL;
 240
 241 static BOOL ME_ListBoxRegistered = FALSE;
 242 static BOOL ME_ComboBoxRegistered = FALSE;
 243
 244 static ME_TextBuffer *ME_MakeText(void) {
 245
 246   ME_TextBuffer *buf = ALLOC_OBJ(ME_TextBuffer);
 247
 248   ME_DisplayItem *p1 = ME_MakeDI(diTextStart);
 249   ME_DisplayItem *p2 = ME_MakeDI(diTextEnd);
 250
 251   p1->prev = NULL;
 252   p1->next = p2;
 253   p2->prev = p1;
 254   p2->next = NULL;
 255   p1->member.para.next_para = p2;
 256   p2->member.para.prev_para = p1;
 257   p2->member.para.nCharOfs = 0;
 258
 259   buf->pFirst = p1;
 260   buf->pLast = p2;
 261   buf->pCharStyle = NULL;
 262
 263   return buf;
 264 }
 265
 266
 267 static LRESULT ME_StreamInText(ME_TextEditor *editor, DWORD dwFormat, ME_InStream *stream, ME_Style *style)
 268 {
 269   WCHAR wszText[STREAMIN_BUFFER_SIZE+1];
 270   WCHAR *pText;
 271
 272   TRACE("%08lx %p\n", dwFormat, stream);
 273
 274   do {
 275     long nWideChars = 0;
 276
 277     if (!stream->dwSize)
 278     {
 279       ME_StreamInFill(stream);
 280       if (stream->editstream->dwError)
 281         break;
 282       if (!stream->dwSize)
 283         break;
 284     }
 285
 286     if (!(dwFormat & SF_UNICODE))
 287     {
 288       /* FIXME? this is doomed to fail on true MBCS like UTF-8, luckily they're unlikely to be used as CP_ACP */
 289       nWideChars = MultiByteToWideChar(CP_ACP, 0, stream->buffer, stream->dwSize, wszText, STREAMIN_BUFFER_SIZE);
 290       pText = wszText;
 291     }
 292     else
 293     {
 294       nWideChars = stream->dwSize >> 1;
 295       pText = (WCHAR *)stream->buffer;
 296     }
 297
 298     ME_InsertTextFromCursor(editor, 0, pText, nWideChars, style);
 299     if (stream->dwSize == 0)
 300       break;
 301     stream->dwSize = 0;
 302   } while(1);
 303   ME_CommitUndo(editor);
 304   ME_UpdateRepaint(editor);
 305   return 0;
 306 }
 307
 308 static void ME_RTFCharAttrHook(RTF_Info *info)
 309 {
 310   CHARFORMAT2W fmt;
 311   fmt.cbSize = sizeof(fmt);
 312   fmt.dwMask = 0;
 313   fmt.dwEffects = 0;
 314
 315   switch(info->rtfMinor)
 316   {
 317     case rtfPlain:
 318       /* FIXME add more flags once they're implemented */
 319       fmt.dwMask = CFM_BOLD | CFM_ITALIC | CFM_UNDERLINE | CFM_STRIKEOUT | CFM_COLOR | CFM_BACKCOLOR | CFM_SIZE | CFM_WEIGHT;
 320       fmt.dwEffects = CFE_AUTOCOLOR | CFE_AUTOBACKCOLOR;
 321       fmt.yHeight = 12*20; /* 12pt */
 322       fmt.wWeight = 400;
 323       break;
 324     case rtfBold:
 325       fmt.dwMask = CFM_BOLD;
 326       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 327       break;
 328     case rtfItalic:
 329       fmt.dwMask = CFM_ITALIC;
 330       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 331       break;
 332     case rtfUnderline:
 333       fmt.dwMask = CFM_UNDERLINE;
 334       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 335       fmt.bUnderlineType = CFU_CF1UNDERLINE;
 336       break;
 337     case rtfNoUnderline:
 338       fmt.dwMask = CFM_UNDERLINE;
 339       fmt.dwEffects = 0;
 340       break;
 341     case rtfStrikeThru:
 342       fmt.dwMask = CFM_STRIKEOUT;
 343       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 344       break;
 345     case rtfSubScript:
 346     case rtfSuperScript:
 347     case rtfSubScrShrink:
 348     case rtfSuperScrShrink:
 349     case rtfNoSuperSub:
 350       fmt.dwMask = CFM_SUBSCRIPT|CFM_SUPERSCRIPT;
 351       if (info->rtfMinor == rtfSubScrShrink) fmt.dwEffects = CFE_SUBSCRIPT;
 352       if (info->rtfMinor == rtfSuperScrShrink) fmt.dwEffects = CFE_SUPERSCRIPT;
 353       if (info->rtfMinor == rtfNoSuperSub) fmt.dwEffects = 0;
 354       break;
 355     case rtfInvisible:
 356       fmt.dwMask = CFM_HIDDEN;
 357       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 358       break;
 359     case rtfBackColor:
 360       fmt.dwMask = CFM_BACKCOLOR;
 361       fmt.dwEffects = 0;
 362       if (info->rtfParam == 0)
 363         fmt.dwEffects = CFE_AUTOBACKCOLOR;
 364       else if (info->rtfParam != rtfNoParam)
 365       {
 366         RTFColor *c = RTFGetColor(info, info->rtfParam);
 367         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 368       }
 369       break;
 370     case rtfForeColor:
 371       fmt.dwMask = CFM_COLOR;
 372       fmt.dwEffects = 0;
 373       if (info->rtfParam == 0)
 374         fmt.dwEffects = CFE_AUTOCOLOR;
 375       else if (info->rtfParam != rtfNoParam)
 376       {
 377         RTFColor *c = RTFGetColor(info, info->rtfParam);
 378         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 379       }
 380       break;
 381     case rtfFontNum:
 382       if (info->rtfParam != rtfNoParam)
 383       {
 384         RTFFont *f = RTFGetFont(info, info->rtfParam);
 385         if (f)
 386         {
 387           MultiByteToWideChar(CP_ACP, 0, f->rtfFName, -1, fmt.szFaceName, sizeof(fmt.szFaceName)/sizeof(WCHAR));
 388           fmt.szFaceName[sizeof(fmt.szFaceName)/sizeof(WCHAR)-1] = '\0';
 389           fmt.bCharSet = f->rtfFCharSet;
 390           fmt.dwMask = CFM_FACE | CFM_CHARSET;
 391         }
 392       }
 393       break;
 394     case rtfFontSize:
 395       fmt.dwMask = CFM_SIZE;
 396       if (info->rtfParam != rtfNoParam)
 397         fmt.yHeight = info->rtfParam*10;
 398       break;
 399   }
 400   if (fmt.dwMask) {
 401     ME_Style *style2;
 402     RTFFlushOutputBuffer(info);
 403     /* FIXME too slow ? how come ? */
 404     style2 = ME_ApplyStyle(info->style, &fmt);
 405     ME_ReleaseStyle(info->style);
 406     info->style = style2;
 407     info->styleChanged = TRUE;
 408   }
 409 }
 410
 411 /* FIXME this function doesn't get any information about context of the RTF tag, which is very bad,
 412    the same tags mean different things in different contexts */
 413 static void ME_RTFParAttrHook(RTF_Info *info)
 414 {
 415   PARAFORMAT2 fmt;
 416   fmt.cbSize = sizeof(fmt);
 417   fmt.dwMask = 0;
 418
 419   switch(info->rtfMinor)
 420   {
 421   case rtfParDef: /* restores default paragraph attributes */
 422     fmt.dwMask = PFM_ALIGNMENT | PFM_TABSTOPS | PFM_OFFSET | PFM_STARTINDENT;
 423     fmt.wAlignment = PFA_LEFT;
 424     fmt.cTabCount = 0;
 425     fmt.dxOffset = fmt.dxStartIndent = 0;
 426     RTFFlushOutputBuffer(info);
 427     ME_GetParagraph(info->editor->pCursors[0].pRun)->member.para.bTable = FALSE;
 428     break;
 429   case rtfInTable:
 430   {
 431     ME_DisplayItem *para;
 432
 433     RTFFlushOutputBuffer(info);
 434     para = ME_GetParagraph(info->editor->pCursors[0].pRun);
 435     assert(para->member.para.pCells);
 436     para->member.para.bTable = TRUE;
 437     return;
 438   }
 439   case rtfFirstIndent:
 440     ME_GetSelectionParaFormat(info->editor, &fmt);
 441     fmt.dwMask = PFM_STARTINDENT | PFM_OFFSET;
 442     fmt.dxStartIndent += info->rtfParam + fmt.dxOffset;
 443     fmt.dxOffset = -info->rtfParam;
 444     break;
 445   case rtfLeftIndent:
 446     ME_GetSelectionParaFormat(info->editor, &fmt);
 447     fmt.dwMask = PFM_STARTINDENT;
 448     fmt.dxStartIndent = -fmt.dxOffset + info->rtfParam;
 449     break;
 450   case rtfRightIndent:
 451     fmt.dwMask = PFM_RIGHTINDENT;
 452     fmt.dxRightIndent = info->rtfParam;
 453     break;
 454   case rtfQuadLeft:
 455   case rtfQuadJust:
 456     fmt.dwMask = PFM_ALIGNMENT;
 457     fmt.wAlignment = PFA_LEFT;
 458     break;
 459   case rtfQuadRight:
 460     fmt.dwMask = PFM_ALIGNMENT;
 461     fmt.wAlignment = PFA_RIGHT;
 462     break;
 463   case rtfQuadCenter:
 464     fmt.dwMask = PFM_ALIGNMENT;
 465     fmt.wAlignment = PFA_CENTER;
 466     break;
 467   case rtfTabPos:
 468     ME_GetSelectionParaFormat(info->editor, &fmt);
 469     if (!(fmt.dwMask & PFM_TABSTOPS))
 470     {
 471       fmt.dwMask |= PFM_TABSTOPS;
 472       fmt.cTabCount = 0;
 473     }
 474     if (fmt.cTabCount < MAX_TAB_STOPS)
 475       fmt.rgxTabs[fmt.cTabCount++] = info->rtfParam;
 476     break;
 477   }
 478   if (fmt.dwMask) {
 479     RTFFlushOutputBuffer(info);
 480     /* FIXME too slow ? how come ?*/
 481     ME_SetSelectionParaFormat(info->editor, &fmt);
 482   }
 483 }
 484
 485 static void ME_RTFTblAttrHook(RTF_Info *info)
 486 {
 487   ME_DisplayItem *para;
 488
 489   switch (info->rtfMinor)
 490   {
 491     case rtfRowDef:
 492       RTFFlushOutputBuffer(info);
 493       para = ME_GetParagraph(info->editor->pCursors[0].pRun);
 494
 495       /* Release possibly inherited cell definitions */
 496       ME_DestroyTableCellList(para);
 497
 498       para->member.para.pCells = ALLOC_OBJ(ME_TableCell);
 499       para->member.para.pCells->nRightBoundary = 0;
 500       para->member.para.pCells->next = NULL;
 501       para->member.para.pLastCell = para->member.para.pCells;
 502       break;
 503     case rtfCellPos:
 504       RTFFlushOutputBuffer(info);
 505       para = ME_GetParagraph(info->editor->pCursors[0].pRun);
 506
 507       if (para->member.para.pLastCell->nRightBoundary)
 508       {
 509         ME_TableCell *pCell = ALLOC_OBJ(ME_TableCell);
 510
 511         pCell->next = NULL;
 512         para->member.para.pLastCell->next = pCell;
 513         para->member.para.pLastCell = pCell;
 514       }
 515       para->member.para.pLastCell->nRightBoundary = info->rtfParam;
 516       break;
 517   }
 518 }
 519
 520 static void ME_RTFReadHook(RTF_Info *info) {
 521   switch(info->rtfClass)
 522   {
 523     case rtfGroup:
 524       switch(info->rtfMajor)
 525       {
 526         case rtfBeginGroup:
 527           if (info->stackTop < maxStack) {
 528             memcpy(&info->stack[info->stackTop].fmt, &info->style->fmt, sizeof(CHARFORMAT2W));
 529             info->stack[info->stackTop].codePage = info->codePage;
 530             info->stack[info->stackTop].unicodeLength = info->unicodeLength;
 531           }
 532           info->stackTop++;
 533           info->styleChanged = FALSE;
 534           break;
 535         case rtfEndGroup:
 536         {
 537           ME_Style *s;
 538           RTFFlushOutputBuffer(info);
 539           if (info->stackTop<=1) {
 540             info->rtfClass = rtfEOF;
 541             return;
 542           }
 543           info->stackTop--;
 544           assert(info->stackTop >= 0);
 545           if (info->styleChanged)
 546           {
 547             /* FIXME too slow ? how come ? */
 548             s = ME_ApplyStyle(info->style, &info->stack[info->stackTop].fmt);
 549             ME_ReleaseStyle(info->style);
 550             info->style = s;
 551             info->codePage = info->stack[info->stackTop].codePage;
 552             info->unicodeLength = info->stack[info->stackTop].unicodeLength;
 553           }
 554           break;
 555         }
 556       }
 557       break;
 558     case rtfControl:
 559       switch(info->rtfMajor)
 560       {
 561         case rtfCharAttr:
 562           ME_RTFCharAttrHook(info);
 563           break;
 564         case rtfParAttr:
 565           ME_RTFParAttrHook(info);
 566           break;
 567         case rtfTblAttr:
 568           ME_RTFTblAttrHook(info);
 569           break;
 570         case rtfSpecialChar:
 571           if (info->rtfMinor == rtfCell)
 572           {
 573             RTFFlushOutputBuffer(info);
 574             ME_InsertTableCellFromCursor(info->editor, 0);
 575           }
 576       }
 577       break;
 578   }
 579 }
 580
 581 void
 582 ME_StreamInFill(ME_InStream *stream)
 583 {
 584   stream->editstream->dwError = stream->editstream->pfnCallback(stream->editstream->dwCookie,
 585                                                                 (BYTE *)stream->buffer,
 586                                                                 sizeof(stream->buffer),
 587                                                                 (LONG *)&stream->dwSize);
 588   stream->dwUsed = 0;
 589 }
 590
 591 static LRESULT ME_StreamIn(ME_TextEditor *editor, DWORD format, EDITSTREAM *stream)
 592 {
 593   RTF_Info parser;
 594   ME_Style *style;
 595   int from, to, to2, nUndoMode;
 596   ME_UndoItem *pUI;
 597   int nEventMask = editor->nEventMask;
 598   ME_InStream inStream;
 599
 600   TRACE("stream==%p hWnd==%p format==0x%X\n", stream, editor->hWnd, (UINT)format);
 601   editor->nEventMask = 0;
 602
 603   ME_GetSelection(editor, &from, &to);
 604   if ((format & SFF_SELECTION) && (editor->mode & TM_RICHTEXT)) {
 605     style = ME_GetSelectionInsertStyle(editor);
 606
 607     ME_InternalDeleteText(editor, from, to-from);
 608   }
 609   else {
 610     style = editor->pBuffer->pDefaultStyle;
 611     ME_AddRefStyle(style);
 612     SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 613     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
 614     from = to = 0;
 615     ME_ClearTempStyle(editor);
 616     /* FIXME restore default paragraph formatting ! */
 617   }
 618
 619   nUndoMode = editor->nUndoMode;
 620   editor->nUndoMode = umIgnore;
 621
 622   inStream.editstream = stream;
 623   inStream.editstream->dwError = 0;
 624   inStream.dwSize = 0;
 625   inStream.dwUsed = 0;
 626
 627   if (format & SF_RTF)
 628   {
 629     /* Check if it's really RTF, and if it is not, use plain text */
 630     ME_StreamInFill(&inStream);
 631     if (!inStream.editstream->dwError)
 632     {
 633       if (strncmp(inStream.buffer, "{\\rtf1", 6) && strncmp(inStream.buffer, "{\\urtf", 6))
 634       {
 635         format &= ~SF_RTF;
 636         format |= SF_TEXT;
 637       }
 638     }
 639   }
 640
 641   if (!inStream.editstream->dwError)
 642   {
 643     if (format & SF_RTF) {
 644       /* setup the RTF parser */
 645       memset(&parser, 0, sizeof parser);
 646       RTFSetEditStream(&parser, &inStream);
 647       parser.rtfFormat = format&(SF_TEXT|SF_RTF);
 648       parser.hwndEdit = editor->hWnd;
 649       parser.editor = editor;
 650       parser.style = style;
 651       WriterInit(&parser);
 652       RTFInit(&parser);
 653       RTFSetReadHook(&parser, ME_RTFReadHook);
 654       BeginFile(&parser);
 655
 656       /* do the parsing */
 657       RTFRead(&parser);
 658       RTFFlushOutputBuffer(&parser);
 659       RTFDestroy(&parser);
 660
 661       style = parser.style;
 662     }
 663     else if (format & SF_TEXT)
 664       ME_StreamInText(editor, format, &inStream, style);
 665     else
 666       ERR("EM_STREAMIN without SF_TEXT or SF_RTF\n");
 667     ME_GetSelection(editor, &to, &to2);
 668     /* put the cursor at the top */
 669     if (!(format & SFF_SELECTION))
 670       SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 671   }
 672
 673   editor->nUndoMode = nUndoMode;
 674   if (format & SFF_SELECTION)
 675   {
 676     pUI = ME_AddUndoItem(editor, diUndoDeleteRun, NULL);
 677     TRACE("from %d to %d\n", from, to);
 678     if (pUI && from < to)
 679     {
 680       pUI->nStart = from;
 681       pUI->nLen = to-from;
 682     }
 683     ME_CommitUndo(editor);
 684   }
 685   else
 686   {
 687     ME_EmptyUndoStack(editor);
 688   }
 689
 690   ME_ReleaseStyle(style);
 691   editor->nEventMask = nEventMask;
 692   if (editor->bRedraw)
 693   {
 694     ME_UpdateRepaint(editor);
 695   }
 696   if (!(format & SFF_SELECTION)) {
 697     ME_ClearTempStyle(editor);
 698   }
 699   ME_MoveCaret(editor);
 700   ME_SendSelChange(editor);
 701   ME_SendRequestResize(editor, FALSE);
 702
 703   return 0;
 704 }
 705
 706
 707 typedef struct tagME_RTFStringStreamStruct
 708 {
 709   char *string;
 710   int pos;
 711   int length;
 712 } ME_RTFStringStreamStruct;
 713
 714 static DWORD CALLBACK ME_ReadFromRTFString(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 715 {
 716   ME_RTFStringStreamStruct *pStruct = (ME_RTFStringStreamStruct *)dwCookie;
 717   int count;
 718
 719   count = min(cb, pStruct->length - pStruct->pos);
 720   memmove(lpBuff, pStruct->string + pStruct->pos, count);
 721   pStruct->pos += count;
 722   *pcb = count;
 723   return 0;
 724 }
 725
 726 static void
 727 ME_StreamInRTFString(ME_TextEditor *editor, BOOL selection, char *string)
 728 {
 729   EDITSTREAM es;
 730   ME_RTFStringStreamStruct data;
 731
 732   data.string = string;
 733   data.length = strlen(string);
 734   data.pos = 0;
 735   es.dwCookie = (DWORD)&data;
 736   es.pfnCallback = ME_ReadFromRTFString;
 737   ME_StreamIn(editor, SF_RTF | (selection ? SFF_SELECTION : 0), &es);
 738 }
 739
 740
 741 ME_DisplayItem *
 742 ME_FindItemAtOffset(ME_TextEditor *editor, ME_DIType nItemType, int nOffset, int *nItemOffset)
 743 {
 744   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
 745
 746   while (item && item->member.para.next_para->member.para.nCharOfs <= nOffset)
 747     item = ME_FindItemFwd(item, diParagraph);
 748
 749   if (!item)
 750     return item;
 751
 752   nOffset -= item->member.para.nCharOfs;
 753   if (nItemType == diParagraph) {
 754     if (nItemOffset)
 755       *nItemOffset = nOffset;
 756     return item;
 757   }
 758
 759   do {
 760     item = ME_FindItemFwd(item, diRun);
 761   } while (item && (item->member.run.nCharOfs + ME_StrLen(item->member.run.strText) <= nOffset));
 762   if (item) {
 763     nOffset -= item->member.run.nCharOfs;
 764     if (nItemOffset)
 765       *nItemOffset = nOffset;
 766   }
 767   return item;
 768 }
 769
 770
 771 static int
 772 ME_FindText(ME_TextEditor *editor, DWORD flags, CHARRANGE *chrg, WCHAR *text, CHARRANGE *chrgText)
 773 {
 774   const int nLen = lstrlenW(text);
 775   const int nTextLen = ME_GetTextLength(editor);
 776   int nStart, nEnd;
 777   int nMin, nMax;
 778   ME_DisplayItem *item;
 779   ME_DisplayItem *para;
 780   WCHAR wLastChar = ' ';
 781
 782   TRACE("flags==0x%08lx, chrg->cpMin==%ld, chrg->cpMax==%ld text==%s\n",
 783         flags, chrg->cpMin, chrg->cpMax, debugstr_w(text));
 784
 785   if (flags & ~(FR_DOWN | FR_MATCHCASE | FR_WHOLEWORD))
 786     FIXME("Flags 0x%08lx not implemented\n",
 787         flags & ~(FR_DOWN | FR_MATCHCASE | FR_WHOLEWORD));
 788
 789   nMin = chrg->cpMin;
 790   if (chrg->cpMax == -1)
 791     nMax = nTextLen;
 792   else
 793     nMax = chrg->cpMax > nTextLen ? nTextLen : chrg->cpMax;
 794
 795   /* when searching up, if cpMin < cpMax, then instead of searching
 796    * on [cpMin,cpMax], we search on [0,cpMin], otherwise, search on
 797    * [cpMax, cpMin]. The exception is when cpMax is -1, in which
 798    * case, it is always bigger than cpMin.
 799    */
 800   if (!(flags & FR_DOWN))
 801   {
 802     int nSwap = nMax;
 803
 804     nMax = nMin > nTextLen ? nTextLen : nMin;
 805     if (nMin < nSwap || chrg->cpMax == -1)
 806       nMin = 0;
 807     else
 808       nMin = nSwap;
 809   }
 810
 811   if (!nLen || nMin < 0 || nMax < 0 || nMax < nMin)
 812   {
 813     if (chrgText)
 814       chrgText->cpMin = chrgText->cpMax = -1;
 815     return -1;
 816   }
 817
 818   if (flags & FR_DOWN) /* Forward search */
 819   {
 820     /* If possible, find the character before where the search starts */
 821     if ((flags & FR_WHOLEWORD) && nMin)
 822     {
 823       nStart = nMin - 1;
 824       item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
 825       if (!item)
 826       {
 827         if (chrgText)
 828           chrgText->cpMin = chrgText->cpMax = -1;
 829         return -1;
 830       }
 831       wLastChar = item->member.run.strText->szData[nStart];
 832     }
 833
 834     nStart = nMin;
 835     item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
 836     if (!item)
 837     {
 838       if (chrgText)
 839         chrgText->cpMin = chrgText->cpMax = -1;
 840       return -1;
 841     }
 842
 843     para = ME_GetParagraph(item);
 844     while (item
 845            && para->member.para.nCharOfs + item->member.run.nCharOfs + nStart + nLen <= nMax)
 846     {
 847       ME_DisplayItem *pCurItem = item;
 848       int nCurStart = nStart;
 849       int nMatched = 0;
 850
 851       while (pCurItem && ME_CharCompare(pCurItem->member.run.strText->szData[nCurStart + nMatched], text[nMatched], (flags & FR_MATCHCASE)))
 852       {
 853         if ((flags & FR_WHOLEWORD) && isalnumW(wLastChar))
 854           break;
 855
 856         nMatched++;
 857         if (nMatched == nLen)
 858         {
 859           ME_DisplayItem *pNextItem = pCurItem;
 860           int nNextStart = nCurStart;
 861           WCHAR wNextChar;
 862
 863           /* Check to see if next character is a whitespace */
 864           if (flags & FR_WHOLEWORD)
 865           {
 866             if (nCurStart + nMatched == ME_StrLen(pCurItem->member.run.strText))
 867             {
 868               pNextItem = ME_FindItemFwd(pCurItem, diRun);
 869               nNextStart = -nMatched;
 870             }
 871
 872             if (pNextItem)
 873               wNextChar = pNextItem->member.run.strText->szData[nNextStart + nMatched];
 874             else
 875               wNextChar = ' ';
 876
 877             if (isalnumW(wNextChar))
 878               break;
 879           }
 880
 881           nStart += para->member.para.nCharOfs + pCurItem->member.run.nCharOfs;
 882           if (chrgText)
 883           {
 884             chrgText->cpMin = nStart;
 885             chrgText->cpMax = nStart + nLen;
 886           }
 887           TRACE("found at %d-%d\n", nStart, nStart + nLen);
 888           return nStart;
 889         }
 890         if (nCurStart + nMatched == ME_StrLen(pCurItem->member.run.strText))
 891         {
 892           pCurItem = ME_FindItemFwd(pCurItem, diRun);
 893           para = ME_GetParagraph(pCurItem);
 894           nCurStart = -nMatched;
 895         }
 896       }
 897       if (pCurItem)
 898         wLastChar = pCurItem->member.run.strText->szData[nCurStart + nMatched];
 899       else
 900         wLastChar = ' ';
 901
 902       nStart++;
 903       if (nStart == ME_StrLen(item->member.run.strText))
 904       {
 905         item = ME_FindItemFwd(item, diRun);
 906         para = ME_GetParagraph(item);
 907         nStart = 0;
 908       }
 909     }
 910   }
 911   else /* Backward search */
 912   {
 913     /* If possible, find the character after where the search ends */
 914     if ((flags & FR_WHOLEWORD) && nMax < nTextLen - 1)
 915     {
 916       nEnd = nMax + 1;
 917       item = ME_FindItemAtOffset(editor, diRun, nEnd, &nEnd);
 918       if (!item)
 919       {
 920         if (chrgText)
 921           chrgText->cpMin = chrgText->cpMax = -1;
 922         return -1;
 923       }
 924       wLastChar = item->member.run.strText->szData[nEnd];
 925     }
 926
 927     nEnd = nMax;
 928     item = ME_FindItemAtOffset(editor, diRun, nEnd, &nEnd);
 929     if (!item)
 930     {
 931       if (chrgText)
 932         chrgText->cpMin = chrgText->cpMax = -1;
 933       return -1;
 934     }
 935
 936     para = ME_GetParagraph(item);
 937
 938     while (item
 939            && para->member.para.nCharOfs + item->member.run.nCharOfs + nEnd - nLen >= nMin)
 940     {
 941       ME_DisplayItem *pCurItem = item;
 942       int nCurEnd = nEnd;
 943       int nMatched = 0;
 944
 945       if (nCurEnd - nMatched == 0)
 946       {
 947         pCurItem = ME_FindItemBack(pCurItem, diRun);
 948         para = ME_GetParagraph(pCurItem);
 949         nCurEnd = ME_StrLen(pCurItem->member.run.strText) + nMatched;
 950       }
 951
 952       while (pCurItem && ME_CharCompare(pCurItem->member.run.strText->szData[nCurEnd - nMatched - 1], text[nLen - nMatched - 1], (flags & FR_MATCHCASE)))
 953       {
 954         if ((flags & FR_WHOLEWORD) && isalnumW(wLastChar))
 955           break;
 956
 957         nMatched++;
 958         if (nMatched == nLen)
 959         {
 960           ME_DisplayItem *pPrevItem = pCurItem;
 961           int nPrevEnd = nCurEnd;
 962           WCHAR wPrevChar;
 963
 964           /* Check to see if previous character is a whitespace */
 965           if (flags & FR_WHOLEWORD)
 966           {
 967             if (nPrevEnd - nMatched == 0)
 968             {
 969               pPrevItem = ME_FindItemBack(pCurItem, diRun);
 970               if (pPrevItem)
 971                 nPrevEnd = ME_StrLen(pPrevItem->member.run.strText) + nMatched;
 972             }
 973
 974             if (pPrevItem)
 975               wPrevChar = pPrevItem->member.run.strText->szData[nPrevEnd - nMatched - 1];
 976             else
 977               wPrevChar = ' ';
 978
 979             if (isalnumW(wPrevChar))
 980               break;
 981           }
 982
 983           nStart = para->member.para.nCharOfs + pCurItem->member.run.nCharOfs + nCurEnd - nMatched;
 984           if (chrgText)
 985           {
 986             chrgText->cpMin = nStart;
 987             chrgText->cpMax = nStart + nLen;
 988           }
 989           TRACE("found at %d-%d\n", nStart, nStart + nLen);
 990           return nStart;
 991         }
 992         if (nCurEnd - nMatched == 0)
 993         {
 994           pCurItem = ME_FindItemBack(pCurItem, diRun);
 995           /* Don't care about pCurItem becoming NULL here; it's already taken
 996            * care of in the exterior loop condition */
 997           para = ME_GetParagraph(pCurItem);
 998           nCurEnd = ME_StrLen(pCurItem->member.run.strText) + nMatched;
 999         }
1000       }
1001       if (pCurItem)
1002         wLastChar = pCurItem->member.run.strText->szData[nCurEnd - nMatched - 1];
1003       else
1004         wLastChar = ' ';
1005
1006       nEnd--;
1007       if (nEnd < 0)
1008       {
1009         item = ME_FindItemBack(item, diRun);
1010         para = ME_GetParagraph(item);
1011         nEnd = ME_StrLen(item->member.run.strText);
1012       }
1013     }
1014   }
1015   TRACE("not found\n");
1016   if (chrgText)
1017     chrgText->cpMin = chrgText->cpMax = -1;
1018   return -1;
1019 }
1020
1021
1022 static BOOL
1023 ME_KeyDown(ME_TextEditor *editor, WORD nKey)
1024 {
1025   BOOL ctrl_is_down = GetKeyState(VK_CONTROL) & 0x8000;
1026   BOOL shift_is_down = GetKeyState(VK_SHIFT) & 0x8000;
1027
1028   switch (nKey)
1029   {
1030     case VK_LEFT:
1031     case VK_RIGHT:
1032     case VK_UP:
1033     case VK_DOWN:
1034     case VK_HOME:
1035     case VK_END:
1036     case VK_PRIOR:
1037     case VK_NEXT:
1038       ME_ArrowKey(editor, nKey, shift_is_down, ctrl_is_down);
1039       return TRUE;
1040     case VK_BACK:
1041     case VK_DELETE:
1042       /* FIXME backspace and delete aren't the same, they act different wrt paragraph style of the merged paragraph */
1043       if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY)
1044         return FALSE;
1045       if (ME_IsSelection(editor))
1046         ME_DeleteSelection(editor);
1047       else if (nKey == VK_DELETE || ME_ArrowKey(editor, VK_LEFT, FALSE, FALSE))
1048         ME_DeleteTextAtCursor(editor, 1, 1);
1049       else
1050         return TRUE;
1051       ME_QueueInvalidateFromCursor(editor, 1);
1052       ME_UpdateRepaint(editor);
1053       ME_SendRequestResize(editor, FALSE);
1054       return TRUE;
1055
1056     default:
1057       if (ctrl_is_down)
1058       {
1059         if (nKey == 'W')
1060         {
1061           CHARFORMAT2W chf;
1062           char buf[2048];
1063
1064           ME_GetSelectionCharFormat(editor, &chf);
1065           ME_DumpStyleToBuf(&chf, buf);
1066           MessageBoxA(NULL, buf, "Style dump", MB_OK);
1067         }
1068         if (nKey == 'Q')
1069         {
1070           ME_CheckCharOffsets(editor);
1071         }
1072       }
1073   }
1074   return FALSE;
1075 }
1076
1077 static void ME_ShowContextMenu(ME_TextEditor *editor, int x, int y)
1078 {
1079   CHARRANGE selrange;
1080   HMENU menu;
1081   int seltype = 0;
1082   if(!editor->lpOleCallback)
1083     return;
1084   ME_GetSelection(editor, (int *)&selrange.cpMin, (int *)&selrange.cpMax);
1085   if(selrange.cpMin == selrange.cpMax)
1086     seltype |= SEL_EMPTY;
1087   else
1088   {
1089     /* FIXME: Handle objects */
1090     seltype |= SEL_TEXT;
1091     if(selrange.cpMax-selrange.cpMin > 1)
1092       seltype |= SEL_MULTICHAR;
1093   }
1094   if(SUCCEEDED(IRichEditOleCallback_GetContextMenu(editor->lpOleCallback, seltype, NULL, &selrange, &menu)))
1095   {
1096     TrackPopupMenu(menu, TPM_LEFTALIGN | TPM_RIGHTBUTTON, x, y, 0, GetParent(editor->hWnd), NULL);
1097     DestroyMenu(menu);
1098   }
1099 }
1100
1101 ME_TextEditor *ME_MakeEditor(HWND hWnd) {
1102   ME_TextEditor *ed = ALLOC_OBJ(ME_TextEditor);
1103   HDC hDC;
1104   int i;
1105   ed->hWnd = hWnd;
1106   ed->bEmulateVersion10 = FALSE;
1107   ed->pBuffer = ME_MakeText();
1108   hDC = GetDC(hWnd);
1109   ME_MakeFirstParagraph(hDC, ed->pBuffer);
1110   ReleaseDC(hWnd, hDC);
1111   ed->bCaretShown = FALSE;
1112   ed->nCursors = 3;
1113   ed->pCursors = ALLOC_N_OBJ(ME_Cursor, ed->nCursors);
1114   ed->pCursors[0].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
1115   ed->pCursors[0].nOffset = 0;
1116   ed->pCursors[1].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
1117   ed->pCursors[1].nOffset = 0;
1118   ed->nLastTotalLength = ed->nTotalLength = 0;
1119   ed->nUDArrowX = -1;
1120   ed->nSequence = 0;
1121   ed->rgbBackColor = -1;
1122   ed->hbrBackground = GetSysColorBrush(COLOR_WINDOW);
1123   ed->bCaretAtEnd = FALSE;
1124   ed->nEventMask = 0;
1125   ed->nModifyStep = 0;
1126   ed->pUndoStack = ed->pRedoStack = ed->pUndoStackBottom = NULL;
1127   ed->nUndoStackSize = 0;
1128   ed->nUndoLimit = STACK_SIZE_DEFAULT;
1129   ed->nUndoMode = umAddToUndo;
1130   ed->nParagraphs = 1;
1131   ed->nLastSelStart = ed->nLastSelEnd = 0;
1132   ed->nScrollPosY = 0;
1133   ed->nZoomNumerator = ed->nZoomDenominator = 0;
1134   ed->bRedraw = TRUE;
1135   ed->bHideSelection = FALSE;
1136   ed->nInvalidOfs = -1;
1137   ed->pfnWordBreak = NULL;
1138   ed->lpOleCallback = NULL;
1139   ed->mode = TM_RICHTEXT | TM_MULTILEVELUNDO | TM_MULTICODEPAGE;
1140   GetClientRect(hWnd, &ed->rcFormat);
1141   for (i=0; i<HFONT_CACHE_SIZE; i++)
1142   {
1143     ed->pFontCache[i].nRefs = 0;
1144     ed->pFontCache[i].nAge = 0;
1145     ed->pFontCache[i].hFont = NULL;
1146   }
1147   ME_CheckCharOffsets(ed);
1148   return ed;
1149 }
1150
1151 typedef struct tagME_GlobalDestStruct
1152 {
1153   HGLOBAL hData;
1154   int nLength;
1155 } ME_GlobalDestStruct;
1156
1157 static DWORD CALLBACK ME_ReadFromHGLOBALUnicode(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
1158 {
1159   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
1160   int i;
1161   WORD *pSrc, *pDest;
1162
1163   cb = cb >> 1;
1164   pDest = (WORD *)lpBuff;
1165   pSrc = (WORD *)GlobalLock(pData->hData);
1166   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
1167     pDest[i] = pSrc[pData->nLength+i];
1168   }
1169   pData->nLength += i;
1170   *pcb = 2*i;
1171   GlobalUnlock(pData->hData);
1172   return 0;
1173 }
1174
1175 static DWORD CALLBACK ME_ReadFromHGLOBALRTF(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
1176 {
1177   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
1178   int i;
1179   BYTE *pSrc, *pDest;
1180
1181   pDest = lpBuff;
1182   pSrc = (BYTE *)GlobalLock(pData->hData);
1183   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
1184     pDest[i] = pSrc[pData->nLength+i];
1185   }
1186   pData->nLength += i;
1187   *pcb = i;
1188   GlobalUnlock(pData->hData);
1189   return 0;
1190 }
1191
1192
1193 void ME_DestroyEditor(ME_TextEditor *editor)
1194 {
1195   ME_DisplayItem *pFirst = editor->pBuffer->pFirst;
1196   ME_DisplayItem *p = pFirst, *pNext = NULL;
1197   int i;
1198
1199   ME_ClearTempStyle(editor);
1200   ME_EmptyUndoStack(editor);
1201   while(p) {
1202     pNext = p->next;
1203     ME_DestroyDisplayItem(p);
1204     p = pNext;
1205   }
1206   ME_ReleaseStyle(editor->pBuffer->pDefaultStyle);
1207   for (i=0; i<HFONT_CACHE_SIZE; i++)
1208   {
1209     if (editor->pFontCache[i].hFont)
1210       DeleteObject(editor->pFontCache[i].hFont);
1211   }
1212   DeleteObject(editor->hbrBackground);
1213   if(editor->lpOleCallback)
1214     IUnknown_Release(editor->lpOleCallback);
1215
1216   FREE_OBJ(editor);
1217 }
1218
1219 static const WCHAR wszClassName[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '2', '0', 'W', 0};
1220 static const WCHAR wszClassName50[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '5', '0', 'W', 0};
1221 static const WCHAR wszClassNameListBox[] = {'R','E','L','i','s','t','B','o','x','2','0','W', 0};
1222 static const WCHAR wszClassNameComboBox[] = {'R','E','C','o','m','b','o','B','o','x','2','0','W', 0};
1223
1224 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
1225 {
1226     TRACE("\n");
1227     switch (fdwReason)
1228     {
1229     case DLL_PROCESS_ATTACH:
1230       DisableThreadLibraryCalls(hinstDLL);
1231       me_heap = HeapCreate (0, 0x10000, 0);
1232       ME_RegisterEditorClass(hinstDLL);
1233       break;
1234
1235     case DLL_PROCESS_DETACH:
1236       UnregisterClassW(wszClassName, 0);
1237       UnregisterClassW(wszClassName50, 0);
1238       UnregisterClassA("RichEdit20A", 0);
1239       UnregisterClassA("RichEdit50A", 0);
1240       if (ME_ListBoxRegistered)
1241           UnregisterClassW(wszClassNameListBox, 0);
1242       if (ME_ComboBoxRegistered)
1243           UnregisterClassW(wszClassNameComboBox, 0);
1244       HeapDestroy (me_heap);
1245       me_heap = NULL;
1246       break;
1247     }
1248     return TRUE;
1249 }
1250
1251
1252 #define UNSUPPORTED_MSG(e) \
1253   case e: \
1254     FIXME(#e ": stub\n"); \
1255     return DefWindowProcW(hWnd, msg, wParam, lParam);
1256
1257 static const char * const edit_messages[] = {
1258   "EM_GETSEL",
1259   "EM_SETSEL",
1260   "EM_GETRECT",
1261   "EM_SETRECT",
1262   "EM_SETRECTNP",
1263   "EM_SCROLL",
1264   "EM_LINESCROLL",
1265   "EM_SCROLLCARET",
1266   "EM_GETMODIFY",
1267   "EM_SETMODIFY",
1268   "EM_GETLINECOUNT",
1269   "EM_LINEINDEX",
1270   "EM_SETHANDLE",
1271   "EM_GETHANDLE",
1272   "EM_GETTHUMB",
1273   "EM_UNKNOWN_BF",
1274   "EM_UNKNOWN_C0",
1275   "EM_LINELENGTH",
1276   "EM_REPLACESEL",
1277   "EM_UNKNOWN_C3",
1278   "EM_GETLINE",
1279   "EM_LIMITTEXT",
1280   "EM_CANUNDO",
1281   "EM_UNDO",
1282   "EM_FMTLINES",
1283   "EM_LINEFROMCHAR",
1284   "EM_UNKNOWN_CA",
1285   "EM_SETTABSTOPS",
1286   "EM_SETPASSWORDCHAR",
1287   "EM_EMPTYUNDOBUFFER",
1288   "EM_GETFIRSTVISIBLELINE",
1289   "EM_SETREADONLY",
1290   "EM_SETWORDBREAKPROC",
1291   "EM_GETWORDBREAKPROC",
1292   "EM_GETPASSWORDCHAR",
1293   "EM_SETMARGINS",
1294   "EM_GETMARGINS",
1295   "EM_GETLIMITTEXT",
1296   "EM_POSFROMCHAR",
1297   "EM_CHARFROMPOS"
1298 };
1299
1300 static const char * const richedit_messages[] = {
1301   "EM_CANPASTE",
1302   "EM_DISPLAYBAND",
1303   "EM_EXGETSEL",
1304   "EM_EXLIMITTEXT",
1305   "EM_EXLINEFROMCHAR",
1306   "EM_EXSETSEL",
1307   "EM_FINDTEXT",
1308   "EM_FORMATRANGE",
1309   "EM_GETCHARFORMAT",
1310   "EM_GETEVENTMASK",
1311   "EM_GETOLEINTERFACE",
1312   "EM_GETPARAFORMAT",
1313   "EM_GETSELTEXT",
1314   "EM_HIDESELECTION",
1315   "EM_PASTESPECIAL",
1316   "EM_REQUESTRESIZE",
1317   "EM_SELECTIONTYPE",
1318   "EM_SETBKGNDCOLOR",
1319   "EM_SETCHARFORMAT",
1320   "EM_SETEVENTMASK",
1321   "EM_SETOLECALLBACK",
1322   "EM_SETPARAFORMAT",
1323   "EM_SETTARGETDEVICE",
1324   "EM_STREAMIN",
1325   "EM_STREAMOUT",
1326   "EM_GETTEXTRANGE",
1327   "EM_FINDWORDBREAK",
1328   "EM_SETOPTIONS",
1329   "EM_GETOPTIONS",
1330   "EM_FINDTEXTEX",
1331   "EM_GETWORDBREAKPROCEX",
1332   "EM_SETWORDBREAKPROCEX",
1333   "EM_SETUNDOLIMIT",
1334   "EM_UNKNOWN_USER_83",
1335   "EM_REDO",
1336   "EM_CANREDO",
1337   "EM_GETUNDONAME",
1338   "EM_GETREDONAME",
1339   "EM_STOPGROUPTYPING",
1340   "EM_SETTEXTMODE",
1341   "EM_GETTEXTMODE",
1342   "EM_AUTOURLDETECT",
1343   "EM_GETAUTOURLDETECT",
1344   "EM_SETPALETTE",
1345   "EM_GETTEXTEX",
1346   "EM_GETTEXTLENGTHEX",
1347   "EM_SHOWSCROLLBAR",
1348   "EM_SETTEXTEX",
1349   "EM_UNKNOWN_USER_98",
1350   "EM_UNKNOWN_USER_99",
1351   "EM_SETPUNCTUATION",
1352   "EM_GETPUNCTUATION",
1353   "EM_SETWORDWRAPMODE",
1354   "EM_GETWORDWRAPMODE",
1355   "EM_SETIMECOLOR",
1356   "EM_GETIMECOLOR",
1357   "EM_SETIMEOPTIONS",
1358   "EM_GETIMEOPTIONS",
1359   "EM_CONVPOSITION",
1360   "EM_UNKNOWN_USER_109",
1361   "EM_UNKNOWN_USER_110",
1362   "EM_UNKNOWN_USER_111",
1363   "EM_UNKNOWN_USER_112",
1364   "EM_UNKNOWN_USER_113",
1365   "EM_UNKNOWN_USER_114",
1366   "EM_UNKNOWN_USER_115",
1367   "EM_UNKNOWN_USER_116",
1368   "EM_UNKNOWN_USER_117",
1369   "EM_UNKNOWN_USER_118",
1370   "EM_UNKNOWN_USER_119",
1371   "EM_SETLANGOPTIONS",
1372   "EM_GETLANGOPTIONS",
1373   "EM_GETIMECOMPMODE",
1374   "EM_FINDTEXTW",
1375   "EM_FINDTEXTEXW",
1376   "EM_RECONVERSION",
1377   "EM_SETIMEMODEBIAS",
1378   "EM_GETIMEMODEBIAS"
1379 };
1380
1381 static const char *
1382 get_msg_name(UINT msg)
1383 {
1384   if (msg >= EM_GETSEL && msg <= EM_SETLIMITTEXT)
1385     return edit_messages[msg - EM_GETSEL];
1386   if (msg >= EM_CANPASTE && msg <= EM_GETIMEMODEBIAS)
1387     return richedit_messages[msg - EM_CANPASTE];
1388   return "";
1389 }
1390
1391 /******************************************************************
1392  *        RichEditANSIWndProc (RICHED20.10)
1393  */
1394 LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
1395   SCROLLINFO si;
1396   ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
1397
1398   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
1399         hWnd, msg, get_msg_name(msg), wParam, lParam);
1400
1401   switch(msg) {
1402
1403   UNSUPPORTED_MSG(EM_DISPLAYBAND)
1404   UNSUPPORTED_MSG(EM_EXLIMITTEXT)
1405   UNSUPPORTED_MSG(EM_FINDWORDBREAK)
1406   UNSUPPORTED_MSG(EM_FMTLINES)
1407   UNSUPPORTED_MSG(EM_FORMATRANGE)
1408   UNSUPPORTED_MSG(EM_GETBIDIOPTIONS)
1409   UNSUPPORTED_MSG(EM_GETEDITSTYLE)
1410   UNSUPPORTED_MSG(EM_GETIMECOMPMODE)
1411   /* UNSUPPORTED_MSG(EM_GETIMESTATUS) missing in Wine headers */
1412   UNSUPPORTED_MSG(EM_GETLANGOPTIONS)
1413   UNSUPPORTED_MSG(EM_GETLIMITTEXT)
1414   UNSUPPORTED_MSG(EM_GETLINE)
1415   /* UNSUPPORTED_MSG(EM_GETOLEINTERFACE) separate stub */
1416   UNSUPPORTED_MSG(EM_GETPASSWORDCHAR)
1417   UNSUPPORTED_MSG(EM_GETREDONAME)
1418   UNSUPPORTED_MSG(EM_GETTEXTMODE)
1419   UNSUPPORTED_MSG(EM_GETTYPOGRAPHYOPTIONS)
1420   UNSUPPORTED_MSG(EM_GETUNDONAME)
1421   UNSUPPORTED_MSG(EM_GETWORDBREAKPROCEX)
1422   UNSUPPORTED_MSG(EM_LIMITTEXT) /* also known as EM_SETLIMITTEXT */
1423   UNSUPPORTED_MSG(EM_PASTESPECIAL)
1424   UNSUPPORTED_MSG(EM_SELECTIONTYPE)
1425   UNSUPPORTED_MSG(EM_SETBIDIOPTIONS)
1426   UNSUPPORTED_MSG(EM_SETEDITSTYLE)
1427   UNSUPPORTED_MSG(EM_SETFONTSIZE)
1428   UNSUPPORTED_MSG(EM_SETLANGOPTIONS)
1429   UNSUPPORTED_MSG(EM_SETPALETTE)
1430   UNSUPPORTED_MSG(EM_SETPASSWORDCHAR)
1431   UNSUPPORTED_MSG(EM_SETSCROLLPOS)
1432   UNSUPPORTED_MSG(EM_SETTABSTOPS)
1433   UNSUPPORTED_MSG(EM_SETTARGETDEVICE)
1434   UNSUPPORTED_MSG(EM_SETTYPOGRAPHYOPTIONS)
1435   UNSUPPORTED_MSG(EM_SETWORDBREAKPROCEX)
1436   UNSUPPORTED_MSG(EM_SHOWSCROLLBAR)
1437   UNSUPPORTED_MSG(WM_SETFONT)
1438   UNSUPPORTED_MSG(WM_STYLECHANGING)
1439   UNSUPPORTED_MSG(WM_STYLECHANGED)
1440 /*  UNSUPPORTED_MSG(WM_UNICHAR) FIXME missing in Wine headers */
1441
1442 /* Messages specific to Richedit controls */
1443
1444   case EM_STREAMIN:
1445    return ME_StreamIn(editor, wParam, (EDITSTREAM*)lParam);
1446   case EM_STREAMOUT:
1447    return ME_StreamOut(editor, wParam, (EDITSTREAM *)lParam);
1448   case WM_GETDLGCODE:
1449   {
1450     UINT code = DLGC_WANTCHARS|DLGC_WANTARROWS;
1451     if (GetWindowLongW(hWnd, GWL_STYLE)&ES_WANTRETURN)
1452       code |= 0; /* FIXME what can we do here ? ask for messages and censor them ? */
1453     return code;
1454   }
1455   case WM_NCCREATE:
1456   {
1457     CREATESTRUCTW *pcs = (CREATESTRUCTW *)lParam;
1458     TRACE("WM_NCCREATE: style 0x%08lx\n", pcs->style);
1459     editor = ME_MakeEditor(hWnd);
1460     SetWindowLongW(hWnd, 0, (long)editor);
1461     pcs = 0; /* ignore */
1462     return TRUE;
1463   }
1464   case EM_EMPTYUNDOBUFFER:
1465     ME_EmptyUndoStack(editor);
1466     return 0;
1467   case EM_GETSEL:
1468   {
1469     /* Note: wParam/lParam can be NULL */
1470     UINT from, to;
1471     PUINT pfrom = wParam ? (PUINT)wParam : &from;
1472     PUINT pto = lParam ? (PUINT)lParam : &to;
1473     ME_GetSelection(editor, (int *)pfrom, (int *)pto);
1474     if ((*pfrom|*pto) & 0xFFFF0000)
1475       return -1;
1476     return MAKELONG(*pfrom,*pto);
1477   }
1478   case EM_EXGETSEL:
1479   {
1480     CHARRANGE *pRange = (CHARRANGE *)lParam;
1481     ME_GetSelection(editor, (int *)&pRange->cpMin, (int *)&pRange->cpMax);
1482     TRACE("EM_EXGETSEL = (%ld,%ld)\n", pRange->cpMin, pRange->cpMax);
1483     return 0;
1484   }
1485   case EM_SETUNDOLIMIT:
1486   {
1487     if ((int)wParam < 0)
1488       editor->nUndoLimit = STACK_SIZE_DEFAULT;
1489     else
1490       editor->nUndoLimit = min(wParam, STACK_SIZE_MAX);
1491     /* Setting a max stack size keeps wine from getting killed
1492       for hogging memory. Windows allocates all this memory at once, so
1493       no program would realistically set a value above our maxiumum. */
1494     return editor->nUndoLimit;
1495   }
1496   case EM_CANUNDO:
1497     return editor->pUndoStack != NULL;
1498   case EM_CANREDO:
1499     return editor->pRedoStack != NULL;
1500   case WM_UNDO: /* FIXME: actually not the same */
1501   case EM_UNDO:
1502     ME_Undo(editor);
1503     return 0;
1504   case EM_REDO:
1505     ME_Redo(editor);
1506     return 0;
1507   case EM_GETOPTIONS:
1508   {
1509     /* these flags are equivalent to the ES_* counterparts */
1510     DWORD mask = ECO_VERTICAL | ECO_AUTOHSCROLL | ECO_AUTOVSCROLL |
1511                  ECO_NOHIDESEL | ECO_READONLY | ECO_WANTRETURN;
1512     DWORD settings = GetWindowLongW(hWnd, GWL_STYLE) & mask;
1513
1514     return settings;
1515   }
1516   case EM_SETOPTIONS:
1517   {
1518     /* these flags are equivalent to ES_* counterparts
1519      * ECO_READONLY is already implemented in the code, only requires
1520      * setting the bit to work
1521      */
1522     DWORD mask = ECO_VERTICAL | ECO_AUTOHSCROLL | ECO_AUTOVSCROLL |
1523                  ECO_NOHIDESEL | ECO_READONLY | ECO_WANTRETURN;
1524     DWORD raw = GetWindowLongW(hWnd, GWL_STYLE);
1525     DWORD settings = mask & raw;
1526
1527     switch(wParam)
1528     {
1529       case ECOOP_SET:
1530         settings = lParam;
1531         break;
1532       case ECOOP_OR:
1533         settings |= lParam;
1534         break;
1535       case ECOOP_AND:
1536         settings &= lParam;
1537         break;
1538       case ECOOP_XOR:
1539         settings ^= lParam;
1540     }
1541     SetWindowLongW(hWnd, GWL_STYLE, (raw & ~mask) | (settings & mask));
1542
1543     if (lParam & ECO_AUTOWORDSELECTION)
1544       FIXME("ECO_AUTOWORDSELECTION not implemented yet!\n");
1545     if (lParam & ECO_SELECTIONBAR)
1546       FIXME("ECO_SELECTIONBAR not implemented yet!\n");
1547     if (lParam & ECO_VERTICAL)
1548       FIXME("ECO_VERTICAL not implemented yet!\n");
1549     if (lParam & ECO_AUTOHSCROLL)
1550       FIXME("ECO_AUTOHSCROLL not implemented yet!\n");
1551     if (lParam & ECO_AUTOVSCROLL)
1552       FIXME("ECO_AUTOVSCROLL not implemented yet!\n");
1553     if (lParam & ECO_NOHIDESEL)
1554       FIXME("ECO_NOHIDESEL not implemented yet!\n");
1555     if (lParam & ECO_WANTRETURN)
1556       FIXME("ECO_WANTRETURN not implemented yet!\n");
1557
1558     return settings;
1559   }
1560   case EM_SETSEL:
1561   {
1562     ME_InvalidateSelection(editor);
1563     ME_SetSelection(editor, wParam, lParam);
1564     ME_InvalidateSelection(editor);
1565     ME_SendSelChange(editor);
1566     return 0;
1567   }
1568   case EM_AUTOURLDETECT:
1569   {
1570     if (wParam==1 || wParam ==0)
1571     {
1572         editor->AutoURLDetect_bEnable = (BOOL)wParam;
1573         return 0;
1574     }
1575     return E_INVALIDARG;
1576   }
1577   case EM_GETAUTOURLDETECT:
1578   {
1579         return editor->AutoURLDetect_bEnable;
1580   }
1581   case EM_EXSETSEL:
1582   {
1583     CHARRANGE *pRange = (CHARRANGE *)lParam;
1584     TRACE("EM_EXSETSEL (%ld,%ld)\n", pRange->cpMin, pRange->cpMax);
1585     ME_InvalidateSelection(editor);
1586     ME_SetSelection(editor, pRange->cpMin, pRange->cpMax);
1587     ME_InvalidateSelection(editor);
1588     ME_SendSelChange(editor);
1589     return 0;
1590   }
1591   case EM_SETTEXTEX:
1592   {
1593     LPWSTR wszText = (LPWSTR)lParam;
1594     SETTEXTEX *pStruct = (SETTEXTEX *)wParam;
1595     size_t len = lstrlenW(wszText);
1596     int from, to;
1597     ME_Style *style;
1598     TRACE("EM_SETTEXEX - %s, flags %d, cp %d\n", debugstr_w(wszText), (int)pStruct->flags, pStruct->codepage);
1599     if (pStruct->codepage != 1200) {
1600       FIXME("EM_SETTEXTEX only supports unicode right now!\n");
1601       return 0;
1602     }
1603     /* FIXME: this should support RTF strings too, according to MSDN */
1604     if (pStruct->flags & ST_SELECTION) {
1605       ME_GetSelection(editor, &from, &to);
1606       style = ME_GetSelectionInsertStyle(editor);
1607       ME_InternalDeleteText(editor, from, to - from);
1608       ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1609       ME_ReleaseStyle(style);
1610     }
1611     else {
1612       ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1613       ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
1614       len = 1;
1615     }
1616     ME_CommitUndo(editor);
1617     if (!(pStruct->flags & ST_KEEPUNDO))
1618       ME_EmptyUndoStack(editor);
1619     ME_UpdateRepaint(editor);
1620     return len;
1621   }
1622   case EM_SETBKGNDCOLOR:
1623   {
1624     LRESULT lColor = ME_GetBackColor(editor);
1625     if (editor->rgbBackColor != -1)
1626       DeleteObject(editor->hbrBackground);
1627     if (wParam)
1628     {
1629       editor->rgbBackColor = -1;
1630       editor->hbrBackground = GetSysColorBrush(COLOR_WINDOW);
1631     }
1632     else
1633     {
1634       editor->rgbBackColor = lParam;
1635       editor->hbrBackground = CreateSolidBrush(editor->rgbBackColor);
1636     }
1637     if (editor->bRedraw)
1638     {
1639       InvalidateRect(hWnd, NULL, TRUE);
1640       UpdateWindow(hWnd);
1641     }
1642     return lColor;
1643   }
1644   case EM_GETMODIFY:
1645     return editor->nModifyStep == 0 ? 0 : 1;
1646   case EM_SETMODIFY:
1647   {
1648     if (wParam)
1649       editor->nModifyStep = 0x80000000;
1650     else
1651       editor->nModifyStep = 0;
1652
1653     return 0;
1654   }
1655   case EM_SETREADONLY:
1656   {
1657     long nStyle = GetWindowLongW(hWnd, GWL_STYLE);
1658     if (wParam)
1659       nStyle |= ES_READONLY;
1660     else
1661       nStyle &= ~ES_READONLY;
1662     SetWindowLongW(hWnd, GWL_STYLE, nStyle);
1663     return 0;
1664   }
1665   case EM_SETEVENTMASK:
1666   {
1667     DWORD nOldMask = editor->nEventMask;
1668
1669     editor->nEventMask = lParam;
1670     return nOldMask;
1671   }
1672   case EM_GETEVENTMASK:
1673     return editor->nEventMask;
1674   case EM_SETCHARFORMAT:
1675   {
1676     CHARFORMAT2W buf, *p;
1677     BOOL bRepaint = TRUE;
1678     p = ME_ToCF2W(&buf, (CHARFORMAT2W *)lParam);
1679     if (!wParam || (editor->mode & TM_PLAINTEXT))
1680       ME_SetDefaultCharFormat(editor, p);
1681     else if (wParam == (SCF_WORD | SCF_SELECTION))
1682       FIXME("EM_SETCHARFORMAT: word selection not supported\n");
1683     else if (wParam == SCF_ALL)
1684       ME_SetCharFormat(editor, 0, ME_GetTextLength(editor), p);
1685     else {
1686       int from, to;
1687       ME_GetSelection(editor, &from, &to);
1688       bRepaint = (from != to);
1689       ME_SetSelectionCharFormat(editor, p);
1690     }
1691     ME_CommitUndo(editor);
1692     if (bRepaint)
1693       ME_UpdateRepaint(editor);
1694     return 0;
1695   }
1696   case EM_GETCHARFORMAT:
1697   {
1698     CHARFORMAT2W tmp, *dst = (CHARFORMAT2W *)lParam;
1699     if (dst->cbSize != sizeof(CHARFORMATA) &&
1700         dst->cbSize != sizeof(CHARFORMATW) &&
1701         dst->cbSize != sizeof(CHARFORMAT2A) &&
1702         dst->cbSize != sizeof(CHARFORMAT2W))
1703       return 0;
1704     tmp.cbSize = sizeof(tmp);
1705     if (!wParam)
1706       ME_GetDefaultCharFormat(editor, &tmp);
1707     else
1708       ME_GetSelectionCharFormat(editor, &tmp);
1709     ME_CopyToCFAny(dst, &tmp);
1710     return tmp.dwMask;
1711   }
1712   case EM_SETPARAFORMAT:
1713     ME_SetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1714     ME_UpdateRepaint(editor);
1715     ME_CommitUndo(editor);
1716     return 0;
1717   case EM_GETPARAFORMAT:
1718     ME_GetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1719     return 0;
1720   case EM_GETFIRSTVISIBLELINE:
1721   {
1722     ME_DisplayItem *p = editor->pBuffer->pFirst;
1723     int y = editor->nScrollPosY;
1724     int ypara = 0;
1725     int count = 0;
1726     int ystart, yend;
1727     while(p) {
1728       p = ME_FindItemFwd(p, diStartRowOrParagraphOrEnd);
1729       if (p->type == diTextEnd)
1730         break;
1731       if (p->type == diParagraph) {
1732         ypara = p->member.para.nYPos;
1733         continue;
1734       }
1735       ystart = ypara + p->member.row.nYPos;
1736       yend = ystart + p->member.row.nHeight;
1737       if (y < yend) {
1738         break;
1739       }
1740       count++;
1741     }
1742     return count;
1743   }
1744   case EM_HIDESELECTION:
1745   {
1746      editor->bHideSelection = (wParam != 0);
1747      ME_InvalidateSelection(editor);
1748      return 0;
1749   }
1750   case EM_LINESCROLL:
1751   {
1752     int nPos = editor->nScrollPosY, nEnd= editor->nTotalLength - editor->sizeWindow.cy;
1753     nPos += 8 * lParam; /* FIXME follow the original */
1754     if (nPos>=nEnd)
1755       nPos = nEnd;
1756     if (nPos<0)
1757       nPos = 0;
1758     if (nPos != editor->nScrollPosY) {
1759       int dy = editor->nScrollPosY - nPos;
1760       editor->nScrollPosY = nPos;
1761       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
1762       if (editor->bRedraw)
1763       {
1764         ScrollWindow(hWnd, 0, dy, NULL, NULL);
1765         UpdateWindow(hWnd);
1766       }
1767     }
1768     return TRUE; /* Should return false if a single line richedit control */
1769   }
1770   case WM_CLEAR:
1771   {
1772     int from, to;
1773     ME_GetSelection(editor, &from, &to);
1774     ME_InternalDeleteText(editor, from, to-from);
1775     ME_CommitUndo(editor);
1776     ME_UpdateRepaint(editor);
1777     return 0;
1778   }
1779   case EM_REPLACESEL:
1780   {
1781     int from, to;
1782     ME_Style *style;
1783     LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
1784     size_t len = lstrlenW(wszText);
1785     TRACE("EM_REPLACESEL - %s\n", debugstr_w(wszText));
1786
1787     ME_GetSelection(editor, &from, &to);
1788     style = ME_GetSelectionInsertStyle(editor);
1789     ME_InternalDeleteText(editor, from, to-from);
1790     ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1791     ME_ReleaseStyle(style);
1792     ME_EndToUnicode(hWnd, wszText);
1793     /* drop temporary style if line end */
1794     /* FIXME question: does abc\n mean: put abc, clear temp style, put \n? (would require a change) */
1795     if (len>0 && wszText[len-1] == '\n')
1796       ME_ClearTempStyle(editor);
1797
1798     ME_CommitUndo(editor);
1799     if (!wParam)
1800       ME_EmptyUndoStack(editor);
1801     ME_UpdateRepaint(editor);
1802     return 0;
1803   }
1804   case EM_SCROLLCARET:
1805   {
1806     int top, bottom; /* row's edges relative to document top */
1807     ME_DisplayItem *para, *row;
1808
1809     row = ME_RowStart(editor->pCursors[0].pRun);
1810     para = ME_GetParagraph(row);
1811     top = para->member.para.nYPos + row->member.row.nYPos;
1812     bottom = top + row->member.row.nHeight;
1813
1814     if ((top < editor->nScrollPosY)
1815         || (editor->nScrollPosY + editor->sizeWindow.cy < bottom))
1816     {
1817       int dy;
1818       int prevScrollPosY = editor->nScrollPosY;
1819
1820       if (top < editor->nScrollPosY) /* caret above window */
1821         editor->nScrollPosY = top;
1822       else /* caret below window */
1823         editor->nScrollPosY = bottom - editor->sizeWindow.cy;
1824
1825       if (editor->nScrollPosY < 0)
1826         editor->nScrollPosY = 0;
1827
1828       dy = prevScrollPosY - editor->nScrollPosY;
1829       SetScrollPos(hWnd, SB_VERT, editor->nScrollPosY, TRUE);
1830       if (editor->bRedraw)
1831       {
1832         ScrollWindow(hWnd, 0, dy, NULL, NULL);
1833         UpdateWindow(hWnd);
1834       }
1835     }
1836
1837     return 0;
1838   }
1839   case WM_SETTEXT:
1840   {
1841     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1842     if (lParam)
1843     {
1844       TRACE("WM_SETTEXT lParam==%lx\n",lParam);
1845       if (!IsWindowUnicode(hWnd) && !strncmp((char *)lParam, "{\\rtf1", 6))
1846       {
1847         /* Undocumented: WM_SETTEXT supports RTF text */
1848         ME_StreamInRTFString(editor, 0, (char *)lParam);
1849       }
1850       else
1851       {
1852         LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
1853         TRACE("WM_SETTEXT - %s\n", debugstr_w(wszText)); /* debugstr_w() */
1854         if (lstrlenW(wszText) > 0)
1855         {
1856           /* uses default style! */
1857           ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
1858         }
1859         ME_EndToUnicode(hWnd, wszText);
1860       }
1861     }
1862     else
1863       TRACE("WM_SETTEXT - NULL\n");
1864     ME_CommitUndo(editor);
1865     ME_EmptyUndoStack(editor);
1866     ME_SetSelection(editor, 0, 0);
1867     ME_UpdateRepaint(editor);
1868     return 0;
1869   }
1870   case EM_CANPASTE:
1871   {
1872     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1873     if (IsClipboardFormatAvailable(nRTFFormat))
1874       return TRUE;
1875     if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1876       return TRUE;
1877     return FALSE;
1878   }
1879   case WM_PASTE:
1880   {
1881     DWORD dwFormat = 0;
1882     EDITSTREAM es;
1883     ME_GlobalDestStruct gds;
1884     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1885     UINT cf = 0;
1886
1887     if (IsClipboardFormatAvailable(nRTFFormat))
1888       cf = nRTFFormat, dwFormat = SF_RTF;
1889     else if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1890       cf = CF_UNICODETEXT, dwFormat = SF_TEXT|SF_UNICODE;
1891     else
1892       return 0;
1893
1894     if (!OpenClipboard(hWnd))
1895       return 0;
1896     gds.hData = GetClipboardData(cf);
1897     gds.nLength = 0;
1898     es.dwCookie = (DWORD)&gds;
1899     es.pfnCallback = dwFormat == SF_RTF ? ME_ReadFromHGLOBALRTF : ME_ReadFromHGLOBALUnicode;
1900     ME_StreamIn(editor, dwFormat|SFF_SELECTION, &es);
1901
1902     CloseClipboard();
1903     return 0;
1904   }
1905   case WM_CUT:
1906   case WM_COPY:
1907   {
1908     LPDATAOBJECT dataObj = NULL;
1909     CHARRANGE range;
1910     HRESULT hr = S_OK;
1911     ME_GetSelection(editor, (int*)&range.cpMin, (int*)&range.cpMax);
1912     if(editor->lpOleCallback)
1913         hr = IRichEditOleCallback_GetClipboardData(editor->lpOleCallback, &range, RECO_COPY, &dataObj);
1914     if(FAILED(hr) || !dataObj)
1915         hr = ME_GetDataObject(editor, &range, &dataObj);
1916     if(SUCCEEDED(hr)) {
1917         hr = OleSetClipboard(dataObj);
1918         IDataObject_Release(dataObj);
1919     }
1920     if (SUCCEEDED(hr) && msg == WM_CUT)
1921     {
1922       ME_InternalDeleteText(editor, range.cpMin, range.cpMax-range.cpMin);
1923       ME_CommitUndo(editor);
1924       ME_UpdateRepaint(editor);
1925     }
1926     return 0;
1927   }
1928   case WM_GETTEXTLENGTH:
1929     return ME_GetTextLength(editor);
1930   case EM_GETTEXTLENGTHEX:
1931     return ME_GetTextLengthEx(editor, (GETTEXTLENGTHEX *)wParam);
1932   case WM_GETTEXT:
1933   {
1934     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1935     tr.chrg.cpMin = 0;
1936     tr.chrg.cpMax = wParam-1;
1937     tr.lpstrText = (WCHAR *)lParam;
1938     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1939   }
1940   case EM_GETTEXTEX:
1941   {
1942     GETTEXTEX *ex = (GETTEXTEX*)wParam;
1943     int nStart, nCount;
1944
1945     if (ex->flags & ~(GT_SELECTION | GT_USECRLF))
1946       FIXME("GETTEXTEX flags 0x%08lx not supported\n", ex->flags & ~(GT_SELECTION | GT_USECRLF));
1947
1948     if (ex->flags & GT_SELECTION)
1949     {
1950       ME_GetSelection(editor, &nStart, &nCount);
1951       nCount -= nStart;
1952       nCount = min(nCount, ex->cb - 1);
1953     }
1954     else
1955     {
1956       nStart = 0;
1957       nCount = ex->cb - 1;
1958     }
1959     if (ex->codepage == 1200 || IsWindowUnicode(hWnd))
1960     {
1961       nCount = min(nCount, ex->cb / sizeof(WCHAR) - 1);
1962       return ME_GetTextW(editor, (LPWSTR)lParam, nStart, nCount, ex->flags & GT_USECRLF);
1963     }
1964     else
1965     {
1966       /* potentially each char may be a CR, why calculate the exact value with O(N) when
1967         we can just take a bigger buffer? :) */
1968       int crlfmul = (ex->flags & GT_USECRLF) ? 2 : 1;
1969       LPWSTR buffer = HeapAlloc(GetProcessHeap(), 0, (crlfmul*nCount + 1) * sizeof(WCHAR));
1970       DWORD buflen = ex->cb;
1971       LRESULT rc;
1972       DWORD flags = 0;
1973
1974       buflen = ME_GetTextW(editor, buffer, nStart, nCount, ex->flags & GT_USECRLF);
1975       rc = WideCharToMultiByte(ex->codepage, flags, buffer, -1, (LPSTR)lParam, ex->cb, ex->lpDefaultChar, ex->lpUsedDefaultChar);
1976
1977       HeapFree(GetProcessHeap(),0,buffer);
1978       return rc;
1979     }
1980   }
1981   case EM_GETSELTEXT:
1982   {
1983     int from, to;
1984     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1985     ME_GetSelection(editor, &from, &to);
1986     tr.chrg.cpMin = from;
1987     tr.chrg.cpMax = to;
1988     tr.lpstrText = (WCHAR *)lParam;
1989     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1990   }
1991   case EM_GETSCROLLPOS:
1992   {
1993       POINT *point = (POINT *)lParam;
1994       point->x = 0; /* FIXME side scrolling not implemented */
1995       point->y = editor->nScrollPosY;
1996       return 1;
1997   }
1998   case EM_GETTEXTRANGE:
1999   {
2000     TEXTRANGEW *rng = (TEXTRANGEW *)lParam;
2001     TRACE("EM_GETTEXTRANGE min=%ld max=%ld unicode=%d emul1.0=%d length=%d\n",
2002       rng->chrg.cpMin, rng->chrg.cpMax, IsWindowUnicode(hWnd),
2003       editor->bEmulateVersion10, ME_GetTextLength(editor));
2004     if (IsWindowUnicode(hWnd))
2005       return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, editor->bEmulateVersion10);
2006     else
2007     {
2008       int nLen = rng->chrg.cpMax-rng->chrg.cpMin;
2009       WCHAR *p = ALLOC_N_OBJ(WCHAR, nLen+1);
2010       int nChars = ME_GetTextW(editor, p, rng->chrg.cpMin, nLen, editor->bEmulateVersion10);
2011       /* FIXME this is a potential security hole (buffer overrun)
2012          if you know more about wchar->mbyte conversion please explain
2013       */
2014       WideCharToMultiByte(CP_ACP, 0, p, nChars+1, (char *)rng->lpstrText, nLen+1, NULL, NULL);
2015       FREE_OBJ(p);
2016       return nChars;
2017     }
2018   }
2019   case EM_GETLINECOUNT:
2020   {
2021     ME_DisplayItem *item = editor->pBuffer->pFirst->next;
2022     int nRows = 0;
2023
2024     while (item != editor->pBuffer->pLast)
2025     {
2026       assert(item->type == diParagraph);
2027       nRows += item->member.para.nRows;
2028       item = item->member.para.next_para;
2029     }
2030     TRACE("EM_GETLINECOUNT: nRows==%d\n", nRows);
2031     return max(1, nRows);
2032   }
2033   case EM_LINEFROMCHAR:
2034   {
2035     if (wParam == -1)
2036       return ME_RowNumberFromCharOfs(editor, ME_GetCursorOfs(editor, 1));
2037     else
2038       return ME_RowNumberFromCharOfs(editor, wParam);
2039   }
2040   case EM_EXLINEFROMCHAR:
2041   {
2042     return ME_RowNumberFromCharOfs(editor, lParam);
2043   }
2044   case EM_LINEINDEX:
2045   {
2046     ME_DisplayItem *item, *para;
2047     int nCharOfs;
2048
2049     if (wParam == -1)
2050       item = ME_FindItemBack(editor->pCursors[0].pRun, diStartRow);
2051     else
2052       item = ME_FindRowWithNumber(editor, wParam);
2053     if (!item)
2054       return -1;
2055     para = ME_GetParagraph(item);
2056     item = ME_FindItemFwd(item, diRun);
2057     nCharOfs = para->member.para.nCharOfs + item->member.run.nCharOfs;
2058     TRACE("EM_LINEINDEX: nCharOfs==%d\n", nCharOfs);
2059     return nCharOfs;
2060   }
2061   case EM_LINELENGTH:
2062   {
2063     ME_DisplayItem *item, *item_end;
2064     int nChars = 0, nThisLineOfs = 0, nNextLineOfs = 0;
2065
2066     if (wParam > ME_GetTextLength(editor))
2067       return 0;
2068     if (wParam == -1)
2069     {
2070       FIXME("EM_LINELENGTH: returning number of unselected characters on lines with selection unsupported.\n");
2071       return 0;
2072     }
2073     item = ME_FindItemAtOffset(editor, diRun, wParam, NULL);
2074     item = ME_RowStart(item);
2075     nThisLineOfs = ME_CharOfsFromRunOfs(editor, ME_FindItemFwd(item, diRun), 0);
2076     item_end = ME_FindItemFwd(item, diStartRow);
2077     if (item_end)
2078       nNextLineOfs = ME_CharOfsFromRunOfs(editor, ME_FindItemFwd(item_end, diRun), 0);
2079     else
2080       nNextLineOfs = ME_FindItemFwd(item, diParagraphOrEnd)->member.para.nCharOfs
2081        - (editor->bEmulateVersion10?2:1);
2082     nChars = nNextLineOfs - nThisLineOfs;
2083     TRACE("EM_LINELENGTH(%d)==%d\n",wParam, nChars);
2084     return nChars;
2085   }
2086   case EM_FINDTEXT:
2087   {
2088     FINDTEXTA *ft = (FINDTEXTA *)lParam;
2089     int nChars = MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, NULL, 0);
2090     WCHAR *tmp;
2091
2092     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
2093       MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, tmp, nChars);
2094     return ME_FindText(editor, wParam, &ft->chrg, tmp, NULL);
2095   }
2096   case EM_FINDTEXTEX:
2097   {
2098     FINDTEXTEXA *ex = (FINDTEXTEXA *)lParam;
2099     int nChars = MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, NULL, 0);
2100     WCHAR *tmp;
2101
2102     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
2103       MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, tmp, nChars);
2104     return ME_FindText(editor, wParam, &ex->chrg, tmp, &ex->chrgText);
2105   }
2106   case EM_FINDTEXTW:
2107   {
2108     FINDTEXTW *ft = (FINDTEXTW *)lParam;
2109     return ME_FindText(editor, wParam, &ft->chrg, ft->lpstrText, NULL);
2110   }
2111   case EM_FINDTEXTEXW:
2112   {
2113     FINDTEXTEXW *ex = (FINDTEXTEXW *)lParam;
2114     return ME_FindText(editor, wParam, &ex->chrg, ex->lpstrText, &ex->chrgText);
2115   }
2116   case EM_GETZOOM:
2117     if (!wParam || !lParam)
2118       return FALSE;
2119     *(int *)wParam = editor->nZoomNumerator;
2120     *(int *)lParam = editor->nZoomDenominator;
2121     return TRUE;
2122   case EM_SETZOOM:
2123     return ME_SetZoom(editor, wParam, lParam);
2124   case EM_CHARFROMPOS:
2125     return ME_CharFromPos(editor, ((POINTL *)lParam)->x, ((POINTL *)lParam)->y);
2126   case EM_POSFROMCHAR:
2127   {
2128     ME_DisplayItem *pRun;
2129     int nCharOfs, nOffset, nLength;
2130     POINTL pt = {0,0};
2131
2132     nCharOfs = wParam;
2133     /* detect which API version we're dealing with */
2134     if (wParam >= 0x40000)
2135         nCharOfs = lParam;
2136     nLength = ME_GetTextLength(editor);
2137
2138     if (nCharOfs < nLength) {
2139         ME_RunOfsFromCharOfs(editor, nCharOfs, &pRun, &nOffset);
2140         assert(pRun->type == diRun);
2141         pt.y = pRun->member.run.pt.y;
2142         pt.x = pRun->member.run.pt.x + ME_PointFromChar(editor, &pRun->member.run, nOffset);
2143         pt.y += ME_GetParagraph(pRun)->member.para.nYPos;
2144     } else {
2145         pt.x = 0;
2146         pt.y = editor->pBuffer->pLast->member.para.nYPos;
2147     }
2148     if (wParam >= 0x40000) {
2149         *(POINTL *)wParam = pt;
2150     }
2151     return MAKELONG( pt.x, pt.y );
2152   }
2153   case WM_CREATE:
2154     ME_CommitUndo(editor);
2155     ME_WrapMarkedParagraphs(editor);
2156     ME_MoveCaret(editor);
2157     return 0;
2158   case WM_DESTROY:
2159     ME_DestroyEditor(editor);
2160     SetWindowLongW(hWnd, 0, 0);
2161     return 0;
2162   case WM_LBUTTONDOWN:
2163     SetFocus(hWnd);
2164     ME_LButtonDown(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
2165     SetCapture(hWnd);
2166     break;
2167   case WM_MOUSEMOVE:
2168     if (GetCapture() == hWnd)
2169       ME_MouseMove(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
2170     break;
2171   case WM_LBUTTONUP:
2172     if (GetCapture() == hWnd)
2173       ReleaseCapture();
2174     break;
2175   case WM_LBUTTONDBLCLK:
2176     ME_SelectWord(editor);
2177     break;
2178   case WM_CONTEXTMENU:
2179     ME_ShowContextMenu(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
2180     break;
2181   case WM_PAINT:
2182     if (editor->bRedraw)
2183     {
2184       HDC hDC;
2185       PAINTSTRUCT ps;
2186
2187       hDC = BeginPaint(hWnd, &ps);
2188       ME_PaintContent(editor, hDC, FALSE, &ps.rcPaint);
2189       EndPaint(hWnd, &ps);
2190     }
2191     break;
2192   case WM_SETFOCUS:
2193     ME_ShowCaret(editor);
2194     ME_SendOldNotify(editor, EN_SETFOCUS);
2195     return 0;
2196   case WM_KILLFOCUS:
2197     ME_HideCaret(editor);
2198     ME_SendOldNotify(editor, EN_KILLFOCUS);
2199     return 0;
2200   case WM_ERASEBKGND:
2201   {
2202     if (editor->bRedraw)
2203     {
2204       HDC hDC = (HDC)wParam;
2205       RECT rc;
2206       if (GetUpdateRect(hWnd,&rc,TRUE))
2207       {
2208         FillRect(hDC, &rc, editor->hbrBackground);
2209       }
2210     }
2211     return 1;
2212   }
2213   case WM_COMMAND:
2214     TRACE("editor wnd command = %d\n", LOWORD(wParam));
2215     return 0;
2216   case WM_KEYDOWN:
2217     if (ME_KeyDown(editor, LOWORD(wParam)))
2218       return 0;
2219     goto do_default;
2220   case WM_CHAR:
2221   {
2222     WCHAR wstr = LOWORD(wParam);
2223     if (editor->AutoURLDetect_bEnable)
2224       ME_AutoURLDetect(editor, wstr);
2225
2226     switch (wstr)
2227     {
2228     case 3: /* Ctrl-C */
2229       SendMessageW(editor->hWnd, WM_COPY, 0, 0);
2230       return 0;
2231     }
2232
2233     if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY) {
2234       MessageBeep(MB_ICONERROR);
2235       return 0; /* FIXME really 0 ? */
2236     }
2237
2238     switch (wstr)
2239     {
2240     case 1: /* Ctrl-A */
2241       ME_SetSelection(editor, 0, -1);
2242       return 0;
2243     case 22: /* Ctrl-V */
2244       SendMessageW(editor->hWnd, WM_PASTE, 0, 0);
2245       return 0;
2246     case 24: /* Ctrl-X */
2247       SendMessageW(editor->hWnd, WM_CUT, 0, 0);
2248       return 0;
2249     case 25: /* Ctrl-Y */
2250       SendMessageW(editor->hWnd, EM_REDO, 0, 0);
2251       return 0;
2252     case 26: /* Ctrl-Z */
2253       SendMessageW(editor->hWnd, EM_UNDO, 0, 0);
2254       return 0;
2255     }
2256     if (((unsigned)wstr)>=' ' || wstr=='\r' || wstr=='\t') {
2257       /* FIXME maybe it would make sense to call EM_REPLACESEL instead ? */
2258       ME_Style *style = ME_GetInsertStyle(editor, 0);
2259       ME_SaveTempStyle(editor);
2260       ME_InsertTextFromCursor(editor, 0, &wstr, 1, style);
2261       ME_ReleaseStyle(style);
2262       ME_CommitUndo(editor);
2263       ME_UpdateRepaint(editor);
2264     }
2265     return 0;
2266   }
2267   case EM_SCROLL: /* fall through */
2268   case WM_VSCROLL:
2269   {
2270     int nEnd;
2271     int nPos = editor->nScrollPosY;
2272     int origNPos = nPos;
2273     int lineHeight = 24;
2274     si.cbSize = sizeof(SCROLLINFO);
2275     si.fMask = SIF_PAGE|SIF_POS|SIF_RANGE|SIF_TRACKPOS;
2276     GetScrollInfo(hWnd, SB_VERT, &si);
2277     if (editor && editor->pBuffer && editor->pBuffer->pDefaultStyle)
2278         lineHeight = editor->pBuffer->pDefaultStyle->tm.tmHeight;
2279     if (lineHeight <= 0) lineHeight = 24;
2280     switch(LOWORD(wParam)) {
2281     case SB_LINEUP:
2282       nPos -= lineHeight;
2283       if (nPos<0) nPos = 0;
2284       break;
2285     case SB_LINEDOWN:
2286     {
2287       nEnd = editor->nTotalLength - editor->sizeWindow.cy;
2288       if (nEnd < 0) nEnd = 0;
2289       nPos += lineHeight;
2290       if (nPos>=nEnd) nPos = nEnd;
2291       break;
2292     }
2293     case SB_PAGEUP:
2294       nPos -= editor->sizeWindow.cy;
2295       if (nPos<0) nPos = 0;
2296       break;
2297     case SB_PAGEDOWN:
2298       nEnd = editor->nTotalLength - editor->sizeWindow.cy;
2299       if (nEnd < 0) nEnd = 0;
2300       nPos += editor->sizeWindow.cy;
2301       if (nPos>=nEnd) nPos = nEnd;
2302       break;
2303     case SB_THUMBTRACK:
2304     case SB_THUMBPOSITION:
2305       nPos = si.nTrackPos;
2306       break;
2307     }
2308     if (nPos != editor->nScrollPosY) {
2309       int dy = editor->nScrollPosY - nPos;
2310       editor->nScrollPosY = nPos;
2311       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
2312       if (editor->bRedraw)
2313       {
2314         ScrollWindow(hWnd, 0, dy, NULL, NULL);
2315         UpdateWindow(hWnd);
2316       }
2317     }
2318     if (msg == EM_SCROLL)
2319       return 0x00010000 | (((nPos - origNPos)/lineHeight) & 0xffff);
2320     break;
2321   }
2322   case WM_MOUSEWHEEL:
2323   {
2324     int gcWheelDelta = 0, nPos = editor->nScrollPosY, nEnd = editor->nTotalLength - editor->sizeWindow.cy;
2325     UINT pulScrollLines;
2326     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
2327     gcWheelDelta -= GET_WHEEL_DELTA_WPARAM(wParam);
2328     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
2329       nPos += pulScrollLines * (gcWheelDelta / WHEEL_DELTA) * 8; /* FIXME follow the original */
2330     if (nPos>=nEnd)
2331       nPos = nEnd;
2332     if (nPos<0)
2333       nPos = 0;
2334     if (nPos != editor->nScrollPosY) {
2335       int dy = editor->nScrollPosY - nPos;
2336       editor->nScrollPosY = nPos;
2337       SetScrollPos(hWnd, SB_VERT, nPos, TRUE);
2338       if (editor->bRedraw)
2339       {
2340         ScrollWindow(hWnd, 0, dy, NULL, NULL);
2341         UpdateWindow(hWnd);
2342       }
2343     }
2344     break;
2345   }
2346   case EM_GETRECT:
2347   {
2348     *((RECT *)lParam) = editor->rcFormat;
2349     return 0;
2350   }
2351   case EM_SETRECT:
2352   case EM_SETRECTNP:
2353   {
2354     if (lParam)
2355     {
2356       RECT *rc = (RECT *)lParam;
2357
2358       if (wParam)
2359       {
2360         editor->rcFormat.left += rc->left;
2361         editor->rcFormat.top += rc->top;
2362         editor->rcFormat.right += rc->right;
2363         editor->rcFormat.bottom += rc->bottom;
2364       }
2365       else
2366       {
2367         editor->rcFormat = *rc;
2368       }
2369     }
2370     else
2371     {
2372       GetClientRect(hWnd, &editor->rcFormat);
2373     }
2374     if (msg != EM_SETRECTNP)
2375       ME_RewrapRepaint(editor);
2376     return 0;
2377   }
2378   case EM_REQUESTRESIZE:
2379     ME_SendRequestResize(editor, TRUE);
2380     return 0;
2381   case WM_SETREDRAW:
2382     editor->bRedraw = wParam;
2383     return 0;
2384   case WM_SIZE:
2385   {
2386     GetClientRect(hWnd, &editor->rcFormat);
2387     ME_RewrapRepaint(editor);
2388     return DefWindowProcW(hWnd, msg, wParam, lParam);
2389   }
2390   case EM_GETOLEINTERFACE:
2391   {
2392     LPVOID *ppvObj = (LPVOID*) lParam;
2393     return CreateIRichEditOle(editor, ppvObj);
2394   }
2395   case EM_SETOLECALLBACK:
2396     if(editor->lpOleCallback)
2397       IUnknown_Release(editor->lpOleCallback);
2398     editor->lpOleCallback = (LPRICHEDITOLECALLBACK)lParam;
2399     if(editor->lpOleCallback)
2400       IUnknown_AddRef(editor->lpOleCallback);
2401     return TRUE;
2402   case EM_GETWORDBREAKPROC:
2403     return (LRESULT)editor->pfnWordBreak;
2404   case EM_SETWORDBREAKPROC:
2405   {
2406     EDITWORDBREAKPROCW pfnOld = editor->pfnWordBreak;
2407
2408     editor->pfnWordBreak = (EDITWORDBREAKPROCW)lParam;
2409     return (LRESULT)pfnOld;
2410   }
2411   case EM_SETTEXTMODE:
2412   {
2413     LRESULT ret;
2414     int mask = 0;
2415     int changes = 0;
2416     if ((ret = RichEditANSIWndProc(hWnd, WM_GETTEXTLENGTH, 0, 0)) == 0)
2417     {
2418       /*Check for valid wParam*/
2419       if ((((wParam & TM_RICHTEXT) && ((wParam & TM_PLAINTEXT) << 1))) ||
2420           (((wParam & TM_MULTILEVELUNDO) && ((wParam & TM_SINGLELEVELUNDO) << 1))) ||
2421           (((wParam & TM_MULTICODEPAGE) && ((wParam & TM_SINGLECODEPAGE) << 1))))
2422         return 1;
2423       else
2424       {
2425         if (wParam & (TM_RICHTEXT | TM_PLAINTEXT))
2426         {
2427           mask |= (TM_RICHTEXT | TM_PLAINTEXT);
2428           changes |= (wParam & (TM_RICHTEXT | TM_PLAINTEXT));
2429         }
2430         /*FIXME: Currently no support for undo level and code page options*/
2431         editor->mode = (editor->mode & (~mask)) | changes;
2432         return 0;
2433       }
2434     }
2435     return ret;
2436   }
2437   default:
2438   do_default:
2439     return DefWindowProcW(hWnd, msg, wParam, lParam);
2440   }
2441   return 0L;
2442 }
2443
2444
2445 /******************************************************************
2446  *        RichEdit10ANSIWndProc (RICHED20.9)
2447  */
2448 LRESULT WINAPI RichEdit10ANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
2449 {
2450   LRESULT result;
2451
2452   /* FIXME: this is NOT the same as 2.0 version */
2453   result = RichEditANSIWndProc(hWnd, msg, wParam, lParam);
2454   if (msg == WM_NCCREATE)
2455   {
2456     ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongW(hWnd, 0);
2457
2458     editor->bEmulateVersion10 = TRUE;
2459     editor->pBuffer->pLast->member.para.nCharOfs = 2;
2460   }
2461   return result;
2462 }
2463
2464 void ME_SendOldNotify(ME_TextEditor *editor, int nCode)
2465 {
2466   HWND hWnd = editor->hWnd;
2467   SendMessageA(GetParent(hWnd), WM_COMMAND, (nCode<<16)|GetWindowLongW(hWnd, GWLP_ID), (LPARAM)hWnd);
2468 }
2469
2470 int ME_CountParagraphsBetween(ME_TextEditor *editor, int from, int to)
2471 {
2472   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
2473   int i = 0;
2474
2475   while(item && item->member.para.next_para->member.para.nCharOfs <= from)
2476     item = item->member.para.next_para;
2477   if (!item)
2478     return 0;
2479   while(item && item->member.para.next_para->member.para.nCharOfs <= to) {
2480     item = item->member.para.next_para;
2481     i++;
2482   }
2483   return i;
2484 }
2485
2486
2487 int ME_GetTextW(ME_TextEditor *editor, WCHAR *buffer, int nStart, int nChars, int bCRLF)
2488 {
2489   ME_DisplayItem *item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
2490   int nWritten = 0;
2491   WCHAR *pStart = buffer;
2492
2493   if (!item) {
2494     *buffer = L'\0';
2495     return 0;
2496   }
2497
2498   if (nStart)
2499   {
2500     int nLen = ME_StrLen(item->member.run.strText) - nStart;
2501     if (nLen > nChars)
2502       nLen = nChars;
2503     CopyMemory(buffer, item->member.run.strText->szData + nStart, sizeof(WCHAR)*nLen);
2504     nChars -= nLen;
2505     nWritten += nLen;
2506     if (!nChars)
2507       return nWritten;
2508     buffer += nLen;
2509     nStart = 0;
2510     item = ME_FindItemFwd(item, diRun);
2511   }
2512
2513   while(nChars && item)
2514   {
2515     int nLen = ME_StrLen(item->member.run.strText);
2516     if (nLen > nChars)
2517       nLen = nChars;
2518
2519     if (item->member.run.nFlags & MERF_ENDPARA)
2520     {
2521       if (!ME_FindItemFwd(item, diRun))
2522         /* No '\r' is appended to the last paragraph. */
2523         nLen = 0;
2524       else {
2525         *buffer = '\r';
2526         if (bCRLF)
2527         {
2528           *(++buffer) = '\n';
2529           nWritten++;
2530         }
2531         assert(nLen == 1);
2532         /* our end paragraph consists of 2 characters now */
2533         if (editor->bEmulateVersion10)
2534           nChars--;
2535       }
2536     }
2537     else
2538       CopyMemory(buffer, item->member.run.strText->szData, sizeof(WCHAR)*nLen);
2539     nChars -= nLen;
2540     nWritten += nLen;
2541     buffer += nLen;
2542
2543     if (!nChars)
2544     {
2545       TRACE("nWritten=%d, actual=%d\n", nWritten, buffer-pStart);
2546       *buffer = L'\0';
2547       return nWritten;
2548     }
2549     item = ME_FindItemFwd(item, diRun);
2550   }
2551   *buffer = L'\0';
2552   TRACE("nWritten=%d, actual=%d\n", nWritten, buffer-pStart);
2553   return nWritten;
2554 }
2555
2556 void ME_RegisterEditorClass(HINSTANCE hInstance)
2557 {
2558   BOOL bResult;
2559   WNDCLASSW wcW;
2560   WNDCLASSA wcA;
2561
2562   wcW.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
2563   wcW.lpfnWndProc = RichEditANSIWndProc;
2564   wcW.cbClsExtra = 0;
2565   wcW.cbWndExtra = 4;
2566   wcW.hInstance = NULL; /* hInstance would register DLL-local class */
2567   wcW.hIcon = NULL;
2568   wcW.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
2569   wcW.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
2570   wcW.lpszMenuName = NULL;
2571   wcW.lpszClassName = wszClassName;
2572   bResult = RegisterClassW(&wcW);
2573   assert(bResult);
2574   wcW.lpszClassName = wszClassName50;
2575   bResult = RegisterClassW(&wcW);
2576   assert(bResult);
2577
2578   wcA.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
2579   wcA.lpfnWndProc = RichEditANSIWndProc;
2580   wcA.cbClsExtra = 0;
2581   wcA.cbWndExtra = 4;
2582   wcA.hInstance = NULL; /* hInstance would register DLL-local class */
2583   wcA.hIcon = NULL;
2584   wcA.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
2585   wcA.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
2586   wcA.lpszMenuName = NULL;
2587   wcA.lpszClassName = "RichEdit20A";
2588   bResult = RegisterClassA(&wcA);
2589   assert(bResult);
2590   wcA.lpszClassName = "RichEdit50A";
2591   bResult = RegisterClassA(&wcA);
2592   assert(bResult);
2593 }
2594
2595 LRESULT WINAPI REComboWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
2596   /* FIXME: Not implemented */
2597   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
2598         hWnd, msg, get_msg_name(msg), wParam, lParam);
2599   return DefWindowProcW(hWnd, msg, wParam, lParam);
2600 }
2601
2602 LRESULT WINAPI REListWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
2603   /* FIXME: Not implemented */
2604   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
2605         hWnd, msg, get_msg_name(msg), wParam, lParam);
2606   return DefWindowProcW(hWnd, msg, wParam, lParam);
2607 }
2608
2609 /******************************************************************
2610  *        REExtendedRegisterClass (RICHED20.8)
2611  *
2612  * FIXME undocumented
2613  * Need to check for errors and implement controls and callbacks
2614  */
2615 LRESULT WINAPI REExtendedRegisterClass(void)
2616 {
2617   WNDCLASSW wcW;
2618   UINT result;
2619
2620   FIXME("semi stub\n");
2621
2622   wcW.cbClsExtra = 0;
2623   wcW.cbWndExtra = 4;
2624   wcW.hInstance = NULL;
2625   wcW.hIcon = NULL;
2626   wcW.hCursor = NULL;
2627   wcW.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
2628   wcW.lpszMenuName = NULL;
2629
2630   if (!ME_ListBoxRegistered)
2631   {
2632       wcW.style = CS_PARENTDC | CS_DBLCLKS | CS_GLOBALCLASS;
2633       wcW.lpfnWndProc = REListWndProc;
2634       wcW.lpszClassName = wszClassNameListBox;
2635       if (RegisterClassW(&wcW)) ME_ListBoxRegistered = TRUE;
2636   }
2637
2638   if (!ME_ComboBoxRegistered)
2639   {
2640       wcW.style = CS_PARENTDC | CS_DBLCLKS | CS_GLOBALCLASS | CS_VREDRAW | CS_HREDRAW;
2641       wcW.lpfnWndProc = REComboWndProc;
2642       wcW.lpszClassName = wszClassNameComboBox;
2643       if (RegisterClassW(&wcW)) ME_ComboBoxRegistered = TRUE;
2644   }
2645
2646   result = 0;
2647   if (ME_ListBoxRegistered)
2648       result += 1;
2649   if (ME_ComboBoxRegistered)
2650       result += 2;
2651
2652   return result;
2653 }
2654
2655 int ME_AutoURLDetect(ME_TextEditor *editor, WCHAR curChar)
2656 {
2657   struct prefix_s {
2658     char *text;
2659     int length;
2660   } prefixes[12] = {
2661     {"http:", 5},
2662     {"file:", 6},
2663     {"mailto:", 8},
2664     {"ftp:", 5},
2665     {"https:", 7},
2666     {"gopher:", 8},
2667     {"nntp:", 6},
2668     {"prospero:", 10},
2669     {"telnet:", 8},
2670     {"news:", 6},
2671     {"wais:", 6},
2672     {"www.", 5}
2673   };
2674   CHARRANGE ins_pt;
2675   int curf_ef, link_ef, def_ef;
2676   int cur_prefx, prefx_cnt;
2677   int sel_min, sel_max;
2678   int car_pos = 0;
2679   int text_pos=-1;
2680   int URLmin, URLmax = 0;
2681   CHARRANGE url;
2682   FINDTEXTA ft;
2683   CHARFORMAT2W cur_format;
2684   CHARFORMAT2W default_format;
2685   CHARFORMAT2W link;
2686   RichEditANSIWndProc(editor->hWnd, EM_EXGETSEL, (WPARAM) 0, (LPARAM) &ins_pt);
2687   sel_min = ins_pt.cpMin;
2688   sel_max = ins_pt.cpMax;
2689   if (sel_min==sel_max)
2690     car_pos = sel_min;
2691   if (sel_min!=sel_max)
2692     car_pos = ME_GetTextLength(editor)+1;
2693   cur_format.cbSize = sizeof(cur_format);
2694   default_format.cbSize = sizeof(default_format);
2695   RichEditANSIWndProc(editor->hWnd, EM_GETCHARFORMAT, SCF_SELECTION, (LPARAM) &cur_format);
2696   RichEditANSIWndProc(editor->hWnd, EM_GETCHARFORMAT, SCF_DEFAULT, (LPARAM) &default_format);
2697   link.cbSize = sizeof(link);
2698   link.dwMask = CFM_LINK | CFM_COLOR | CFM_UNDERLINE;
2699   link.dwEffects = CFE_LINK | CFE_UNDERLINE;
2700   link.crTextColor = RGB(0,0,255);
2701   curf_ef = cur_format.dwEffects & link.dwEffects;
2702   def_ef = default_format.dwEffects & link.dwEffects;
2703   link_ef = link.dwEffects & link.dwEffects;
2704   if (curf_ef == link_ef)
2705   {
2706     if( curChar == '\n' || curChar=='\r' || curChar==' ')
2707     {
2708       ME_SetSelection(editor, car_pos, car_pos);
2709       RichEditANSIWndProc(editor->hWnd, EM_SETCHARFORMAT, SCF_SELECTION, (LPARAM) &default_format);
2710       text_pos=-1;
2711       return 0;
2712     }
2713   }
2714   if (curf_ef == def_ef)
2715   {
2716     cur_prefx = 0;
2717     prefx_cnt = (sizeof(prefixes)/sizeof(struct prefix_s))-1;
2718     while (cur_prefx<=prefx_cnt)
2719     {
2720       if (text_pos == -1)
2721       {
2722         ft.lpstrText = prefixes[cur_prefx].text;
2723         URLmin=max(0,(car_pos-prefixes[cur_prefx].length));
2724         URLmax=max(0, car_pos);
2725         if ((car_pos == 0) && (ME_GetTextLength(editor) != 0))
2726         {
2727         URLmax = ME_GetTextLength(editor)+1;
2728         }
2729         ft.chrg.cpMin = URLmin;
2730         ft.chrg.cpMax = URLmax;
2731         text_pos=RichEditANSIWndProc(editor->hWnd, EM_FINDTEXT, FR_DOWN, (LPARAM)&ft);
2732         cur_prefx++;
2733       }
2734       if (text_pos != -1)
2735       {
2736         url.cpMin=text_pos;
2737         url.cpMax=car_pos-1;
2738         ME_SetCharFormat(editor, text_pos, (URLmax-text_pos), &link);
2739         ME_Repaint(editor);
2740         break;
2741       }
2742     }
2743   }
2744   return 0;
2745 }