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 #define TEXT_LIMIT_DEFAULT 32767
 237
 238 WINE_DEFAULT_DEBUG_CHANNEL(richedit);
 239
 240 int me_debug = 0;
 241 HANDLE me_heap = NULL;
 242
 243 static BOOL ME_ListBoxRegistered = FALSE;
 244 static BOOL ME_ComboBoxRegistered = FALSE;
 245
 246 static ME_TextBuffer *ME_MakeText(void) {
 247
 248   ME_TextBuffer *buf = ALLOC_OBJ(ME_TextBuffer);
 249
 250   ME_DisplayItem *p1 = ME_MakeDI(diTextStart);
 251   ME_DisplayItem *p2 = ME_MakeDI(diTextEnd);
 252
 253   p1->prev = NULL;
 254   p1->next = p2;
 255   p2->prev = p1;
 256   p2->next = NULL;
 257   p1->member.para.next_para = p2;
 258   p2->member.para.prev_para = p1;
 259   p2->member.para.nCharOfs = 0;
 260
 261   buf->pFirst = p1;
 262   buf->pLast = p2;
 263   buf->pCharStyle = NULL;
 264
 265   return buf;
 266 }
 267
 268
 269 static LRESULT ME_StreamInText(ME_TextEditor *editor, DWORD dwFormat, ME_InStream *stream, ME_Style *style)
 270 {
 271   WCHAR wszText[STREAMIN_BUFFER_SIZE+1];
 272   WCHAR *pText;
 273
 274   TRACE("%08x %p\n", dwFormat, stream);
 275
 276   do {
 277     long nWideChars = 0;
 278
 279     if (!stream->dwSize)
 280     {
 281       ME_StreamInFill(stream);
 282       if (stream->editstream->dwError)
 283         break;
 284       if (!stream->dwSize)
 285         break;
 286     }
 287
 288     if (!(dwFormat & SF_UNICODE))
 289     {
 290       /* FIXME? this is doomed to fail on true MBCS like UTF-8, luckily they're unlikely to be used as CP_ACP */
 291       nWideChars = MultiByteToWideChar(CP_ACP, 0, stream->buffer, stream->dwSize, wszText, STREAMIN_BUFFER_SIZE);
 292       pText = wszText;
 293     }
 294     else
 295     {
 296       nWideChars = stream->dwSize >> 1;
 297       pText = (WCHAR *)stream->buffer;
 298     }
 299
 300     ME_InsertTextFromCursor(editor, 0, pText, nWideChars, style);
 301     if (stream->dwSize == 0)
 302       break;
 303     stream->dwSize = 0;
 304   } while(1);
 305   ME_CommitUndo(editor);
 306   ME_UpdateRepaint(editor);
 307   return 0;
 308 }
 309
 310 static void ME_RTFCharAttrHook(RTF_Info *info)
 311 {
 312   CHARFORMAT2W fmt;
 313   fmt.cbSize = sizeof(fmt);
 314   fmt.dwMask = 0;
 315   fmt.dwEffects = 0;
 316
 317   switch(info->rtfMinor)
 318   {
 319     case rtfPlain:
 320       /* FIXME add more flags once they're implemented */
 321       fmt.dwMask = CFM_BOLD | CFM_ITALIC | CFM_UNDERLINE | CFM_STRIKEOUT | CFM_COLOR | CFM_BACKCOLOR | CFM_SIZE | CFM_WEIGHT;
 322       fmt.dwEffects = CFE_AUTOCOLOR | CFE_AUTOBACKCOLOR;
 323       fmt.yHeight = 12*20; /* 12pt */
 324       fmt.wWeight = 400;
 325       break;
 326     case rtfBold:
 327       fmt.dwMask = CFM_BOLD;
 328       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 329       break;
 330     case rtfItalic:
 331       fmt.dwMask = CFM_ITALIC;
 332       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 333       break;
 334     case rtfUnderline:
 335       fmt.dwMask = CFM_UNDERLINE;
 336       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 337       fmt.bUnderlineType = CFU_CF1UNDERLINE;
 338       break;
 339     case rtfNoUnderline:
 340       fmt.dwMask = CFM_UNDERLINE;
 341       fmt.dwEffects = 0;
 342       break;
 343     case rtfStrikeThru:
 344       fmt.dwMask = CFM_STRIKEOUT;
 345       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 346       break;
 347     case rtfSubScript:
 348     case rtfSuperScript:
 349     case rtfSubScrShrink:
 350     case rtfSuperScrShrink:
 351     case rtfNoSuperSub:
 352       fmt.dwMask = CFM_SUBSCRIPT|CFM_SUPERSCRIPT;
 353       if (info->rtfMinor == rtfSubScrShrink) fmt.dwEffects = CFE_SUBSCRIPT;
 354       if (info->rtfMinor == rtfSuperScrShrink) fmt.dwEffects = CFE_SUPERSCRIPT;
 355       if (info->rtfMinor == rtfNoSuperSub) fmt.dwEffects = 0;
 356       break;
 357     case rtfInvisible:
 358       fmt.dwMask = CFM_HIDDEN;
 359       fmt.dwEffects = info->rtfParam ? fmt.dwMask : 0;
 360       break;
 361     case rtfBackColor:
 362       fmt.dwMask = CFM_BACKCOLOR;
 363       fmt.dwEffects = 0;
 364       if (info->rtfParam == 0)
 365         fmt.dwEffects = CFE_AUTOBACKCOLOR;
 366       else if (info->rtfParam != rtfNoParam)
 367       {
 368         RTFColor *c = RTFGetColor(info, info->rtfParam);
 369         fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 370       }
 371       break;
 372     case rtfForeColor:
 373       fmt.dwMask = CFM_COLOR;
 374       fmt.dwEffects = 0;
 375       if (info->rtfParam == 0)
 376         fmt.dwEffects = CFE_AUTOCOLOR;
 377       else if (info->rtfParam != rtfNoParam)
 378       {
 379         RTFColor *c = RTFGetColor(info, info->rtfParam);
 380         if (c)
 381           fmt.crTextColor = (c->rtfCBlue<<16)|(c->rtfCGreen<<8)|(c->rtfCRed);
 382         else
 383           fmt.crTextColor = 0;
 384       }
 385       break;
 386     case rtfFontNum:
 387       if (info->rtfParam != rtfNoParam)
 388       {
 389         RTFFont *f = RTFGetFont(info, info->rtfParam);
 390         if (f)
 391         {
 392           MultiByteToWideChar(CP_ACP, 0, f->rtfFName, -1, fmt.szFaceName, sizeof(fmt.szFaceName)/sizeof(WCHAR));
 393           fmt.szFaceName[sizeof(fmt.szFaceName)/sizeof(WCHAR)-1] = '\0';
 394           fmt.bCharSet = f->rtfFCharSet;
 395           fmt.dwMask = CFM_FACE | CFM_CHARSET;
 396         }
 397       }
 398       break;
 399     case rtfFontSize:
 400       fmt.dwMask = CFM_SIZE;
 401       if (info->rtfParam != rtfNoParam)
 402         fmt.yHeight = info->rtfParam*10;
 403       break;
 404   }
 405   if (fmt.dwMask) {
 406     ME_Style *style2;
 407     RTFFlushOutputBuffer(info);
 408     /* FIXME too slow ? how come ? */
 409     style2 = ME_ApplyStyle(info->style, &fmt);
 410     ME_ReleaseStyle(info->style);
 411     info->style = style2;
 412     info->styleChanged = TRUE;
 413   }
 414 }
 415
 416 /* FIXME this function doesn't get any information about context of the RTF tag, which is very bad,
 417    the same tags mean different things in different contexts */
 418 static void ME_RTFParAttrHook(RTF_Info *info)
 419 {
 420   PARAFORMAT2 fmt;
 421   fmt.cbSize = sizeof(fmt);
 422   fmt.dwMask = 0;
 423
 424   switch(info->rtfMinor)
 425   {
 426   case rtfParDef: /* restores default paragraph attributes */
 427     fmt.dwMask = PFM_ALIGNMENT | PFM_TABSTOPS | PFM_OFFSET | PFM_STARTINDENT;
 428     fmt.wAlignment = PFA_LEFT;
 429     fmt.cTabCount = 0;
 430     fmt.dxOffset = fmt.dxStartIndent = 0;
 431     RTFFlushOutputBuffer(info);
 432     ME_GetParagraph(info->editor->pCursors[0].pRun)->member.para.bTable = FALSE;
 433     break;
 434   case rtfInTable:
 435   {
 436     ME_DisplayItem *para;
 437
 438     RTFFlushOutputBuffer(info);
 439     para = ME_GetParagraph(info->editor->pCursors[0].pRun);
 440     assert(para->member.para.pCells);
 441     para->member.para.bTable = TRUE;
 442     return;
 443   }
 444   case rtfFirstIndent:
 445     ME_GetSelectionParaFormat(info->editor, &fmt);
 446     fmt.dwMask = PFM_STARTINDENT | PFM_OFFSET;
 447     fmt.dxStartIndent += info->rtfParam + fmt.dxOffset;
 448     fmt.dxOffset = -info->rtfParam;
 449     break;
 450   case rtfLeftIndent:
 451     ME_GetSelectionParaFormat(info->editor, &fmt);
 452     fmt.dwMask = PFM_STARTINDENT;
 453     fmt.dxStartIndent = -fmt.dxOffset + info->rtfParam;
 454     break;
 455   case rtfRightIndent:
 456     fmt.dwMask = PFM_RIGHTINDENT;
 457     fmt.dxRightIndent = info->rtfParam;
 458     break;
 459   case rtfQuadLeft:
 460   case rtfQuadJust:
 461     fmt.dwMask = PFM_ALIGNMENT;
 462     fmt.wAlignment = PFA_LEFT;
 463     break;
 464   case rtfQuadRight:
 465     fmt.dwMask = PFM_ALIGNMENT;
 466     fmt.wAlignment = PFA_RIGHT;
 467     break;
 468   case rtfQuadCenter:
 469     fmt.dwMask = PFM_ALIGNMENT;
 470     fmt.wAlignment = PFA_CENTER;
 471     break;
 472   case rtfTabPos:
 473     ME_GetSelectionParaFormat(info->editor, &fmt);
 474     if (!(fmt.dwMask & PFM_TABSTOPS))
 475     {
 476       fmt.dwMask |= PFM_TABSTOPS;
 477       fmt.cTabCount = 0;
 478     }
 479     if (fmt.cTabCount < MAX_TAB_STOPS)
 480       fmt.rgxTabs[fmt.cTabCount++] = info->rtfParam;
 481     break;
 482   }
 483   if (fmt.dwMask) {
 484     RTFFlushOutputBuffer(info);
 485     /* FIXME too slow ? how come ?*/
 486     ME_SetSelectionParaFormat(info->editor, &fmt);
 487   }
 488 }
 489
 490 static void ME_RTFTblAttrHook(RTF_Info *info)
 491 {
 492   ME_DisplayItem *para;
 493
 494   switch (info->rtfMinor)
 495   {
 496     case rtfRowDef:
 497       RTFFlushOutputBuffer(info);
 498       para = ME_GetParagraph(info->editor->pCursors[0].pRun);
 499
 500       /* Release possibly inherited cell definitions */
 501       ME_DestroyTableCellList(para);
 502
 503       para->member.para.pCells = ALLOC_OBJ(ME_TableCell);
 504       para->member.para.pCells->nRightBoundary = 0;
 505       para->member.para.pCells->next = NULL;
 506       para->member.para.pLastCell = para->member.para.pCells;
 507       break;
 508     case rtfCellPos:
 509       RTFFlushOutputBuffer(info);
 510       para = ME_GetParagraph(info->editor->pCursors[0].pRun);
 511
 512       if (para->member.para.pLastCell->nRightBoundary)
 513       {
 514         ME_TableCell *pCell = ALLOC_OBJ(ME_TableCell);
 515
 516         pCell->next = NULL;
 517         para->member.para.pLastCell->next = pCell;
 518         para->member.para.pLastCell = pCell;
 519       }
 520       para->member.para.pLastCell->nRightBoundary = info->rtfParam;
 521       break;
 522   }
 523 }
 524
 525 static void ME_RTFReadHook(RTF_Info *info) {
 526   switch(info->rtfClass)
 527   {
 528     case rtfGroup:
 529       switch(info->rtfMajor)
 530       {
 531         case rtfBeginGroup:
 532           if (info->stackTop < maxStack) {
 533             memcpy(&info->stack[info->stackTop].fmt, &info->style->fmt, sizeof(CHARFORMAT2W));
 534             info->stack[info->stackTop].codePage = info->codePage;
 535             info->stack[info->stackTop].unicodeLength = info->unicodeLength;
 536           }
 537           info->stackTop++;
 538           info->styleChanged = FALSE;
 539           break;
 540         case rtfEndGroup:
 541         {
 542           ME_Style *s;
 543           RTFFlushOutputBuffer(info);
 544           if (info->stackTop<=1) {
 545             info->rtfClass = rtfEOF;
 546             return;
 547           }
 548           info->stackTop--;
 549           assert(info->stackTop >= 0);
 550           if (info->styleChanged)
 551           {
 552             /* FIXME too slow ? how come ? */
 553             s = ME_ApplyStyle(info->style, &info->stack[info->stackTop].fmt);
 554             ME_ReleaseStyle(info->style);
 555             info->style = s;
 556             info->codePage = info->stack[info->stackTop].codePage;
 557             info->unicodeLength = info->stack[info->stackTop].unicodeLength;
 558           }
 559           break;
 560         }
 561       }
 562       break;
 563     case rtfControl:
 564       switch(info->rtfMajor)
 565       {
 566         case rtfCharAttr:
 567           ME_RTFCharAttrHook(info);
 568           break;
 569         case rtfParAttr:
 570           ME_RTFParAttrHook(info);
 571           break;
 572         case rtfTblAttr:
 573           ME_RTFTblAttrHook(info);
 574           break;
 575         case rtfSpecialChar:
 576           if (info->rtfMinor == rtfCell)
 577           {
 578             RTFFlushOutputBuffer(info);
 579             ME_InsertTableCellFromCursor(info->editor, 0);
 580           }
 581       }
 582       break;
 583   }
 584 }
 585
 586 void
 587 ME_StreamInFill(ME_InStream *stream)
 588 {
 589   stream->editstream->dwError = stream->editstream->pfnCallback(stream->editstream->dwCookie,
 590                                                                 (BYTE *)stream->buffer,
 591                                                                 sizeof(stream->buffer),
 592                                                                 (LONG *)&stream->dwSize);
 593   stream->dwUsed = 0;
 594 }
 595
 596 static LRESULT ME_StreamIn(ME_TextEditor *editor, DWORD format, EDITSTREAM *stream)
 597 {
 598   RTF_Info parser;
 599   ME_Style *style;
 600   int from, to, to2, nUndoMode;
 601   ME_UndoItem *pUI;
 602   int nEventMask = editor->nEventMask;
 603   ME_InStream inStream;
 604
 605   TRACE("stream==%p hWnd==%p format==0x%X\n", stream, editor->hWnd, (UINT)format);
 606   editor->nEventMask = 0;
 607
 608   ME_GetSelection(editor, &from, &to);
 609   if ((format & SFF_SELECTION) && (editor->mode & TM_RICHTEXT)) {
 610     style = ME_GetSelectionInsertStyle(editor);
 611
 612     ME_InternalDeleteText(editor, from, to-from);
 613   }
 614   else {
 615     style = editor->pBuffer->pDefaultStyle;
 616     ME_AddRefStyle(style);
 617     SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 618     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
 619     from = to = 0;
 620     ME_ClearTempStyle(editor);
 621     /* FIXME restore default paragraph formatting ! */
 622   }
 623
 624   nUndoMode = editor->nUndoMode;
 625   editor->nUndoMode = umIgnore;
 626
 627   inStream.editstream = stream;
 628   inStream.editstream->dwError = 0;
 629   inStream.dwSize = 0;
 630   inStream.dwUsed = 0;
 631
 632   if (format & SF_RTF)
 633   {
 634     /* Check if it's really RTF, and if it is not, use plain text */
 635     ME_StreamInFill(&inStream);
 636     if (!inStream.editstream->dwError)
 637     {
 638       if (strncmp(inStream.buffer, "{\\rtf", 5) && strncmp(inStream.buffer, "{\\urtf", 6))
 639       {
 640         format &= ~SF_RTF;
 641         format |= SF_TEXT;
 642       }
 643     }
 644   }
 645
 646   if (!inStream.editstream->dwError)
 647   {
 648     if (format & SF_RTF) {
 649       /* setup the RTF parser */
 650       memset(&parser, 0, sizeof parser);
 651       RTFSetEditStream(&parser, &inStream);
 652       parser.rtfFormat = format&(SF_TEXT|SF_RTF);
 653       parser.hwndEdit = editor->hWnd;
 654       parser.editor = editor;
 655       parser.style = style;
 656       WriterInit(&parser);
 657       RTFInit(&parser);
 658       RTFSetReadHook(&parser, ME_RTFReadHook);
 659       BeginFile(&parser);
 660
 661       /* do the parsing */
 662       RTFRead(&parser);
 663       RTFFlushOutputBuffer(&parser);
 664       RTFDestroy(&parser);
 665
 666       style = parser.style;
 667     }
 668     else if (format & SF_TEXT)
 669       ME_StreamInText(editor, format, &inStream, style);
 670     else
 671       ERR("EM_STREAMIN without SF_TEXT or SF_RTF\n");
 672     ME_GetSelection(editor, &to, &to2);
 673     /* put the cursor at the top */
 674     if (!(format & SFF_SELECTION))
 675       SendMessageA(editor->hWnd, EM_SETSEL, 0, 0);
 676   }
 677
 678   editor->nUndoMode = nUndoMode;
 679   if (format & SFF_SELECTION)
 680   {
 681     pUI = ME_AddUndoItem(editor, diUndoDeleteRun, NULL);
 682     TRACE("from %d to %d\n", from, to);
 683     if (pUI && from < to)
 684     {
 685       pUI->nStart = from;
 686       pUI->nLen = to-from;
 687     }
 688     ME_CommitUndo(editor);
 689   }
 690   else
 691   {
 692     ME_EmptyUndoStack(editor);
 693   }
 694
 695   ME_ReleaseStyle(style);
 696   editor->nEventMask = nEventMask;
 697   if (editor->bRedraw)
 698   {
 699     ME_UpdateRepaint(editor);
 700   }
 701   if (!(format & SFF_SELECTION)) {
 702     ME_ClearTempStyle(editor);
 703   }
 704   ME_MoveCaret(editor);
 705   ME_SendSelChange(editor);
 706   ME_SendRequestResize(editor, FALSE);
 707
 708   return 0;
 709 }
 710
 711
 712 typedef struct tagME_RTFStringStreamStruct
 713 {
 714   char *string;
 715   int pos;
 716   int length;
 717 } ME_RTFStringStreamStruct;
 718
 719 static DWORD CALLBACK ME_ReadFromRTFString(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
 720 {
 721   ME_RTFStringStreamStruct *pStruct = (ME_RTFStringStreamStruct *)dwCookie;
 722   int count;
 723
 724   count = min(cb, pStruct->length - pStruct->pos);
 725   memmove(lpBuff, pStruct->string + pStruct->pos, count);
 726   pStruct->pos += count;
 727   *pcb = count;
 728   return 0;
 729 }
 730
 731 static void
 732 ME_StreamInRTFString(ME_TextEditor *editor, BOOL selection, char *string)
 733 {
 734   EDITSTREAM es;
 735   ME_RTFStringStreamStruct data;
 736
 737   data.string = string;
 738   data.length = strlen(string);
 739   data.pos = 0;
 740   es.dwCookie = (DWORD)&data;
 741   es.pfnCallback = ME_ReadFromRTFString;
 742   ME_StreamIn(editor, SF_RTF | (selection ? SFF_SELECTION : 0), &es);
 743 }
 744
 745
 746 ME_DisplayItem *
 747 ME_FindItemAtOffset(ME_TextEditor *editor, ME_DIType nItemType, int nOffset, int *nItemOffset)
 748 {
 749   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
 750
 751   while (item && item->member.para.next_para->member.para.nCharOfs <= nOffset)
 752     item = ME_FindItemFwd(item, diParagraph);
 753
 754   if (!item)
 755     return item;
 756
 757   nOffset -= item->member.para.nCharOfs;
 758   if (nItemType == diParagraph) {
 759     if (nItemOffset)
 760       *nItemOffset = nOffset;
 761     return item;
 762   }
 763
 764   do {
 765     item = ME_FindItemFwd(item, diRun);
 766   } while (item && (item->member.run.nCharOfs + ME_StrLen(item->member.run.strText) <= nOffset));
 767   if (item) {
 768     nOffset -= item->member.run.nCharOfs;
 769     if (nItemOffset)
 770       *nItemOffset = nOffset;
 771   }
 772   return item;
 773 }
 774
 775
 776 static int
 777 ME_FindText(ME_TextEditor *editor, DWORD flags, CHARRANGE *chrg, const WCHAR *text, CHARRANGE *chrgText)
 778 {
 779   const int nLen = lstrlenW(text);
 780   const int nTextLen = ME_GetTextLength(editor);
 781   int nStart, nEnd;
 782   int nMin, nMax;
 783   ME_DisplayItem *item;
 784   ME_DisplayItem *para;
 785   WCHAR wLastChar = ' ';
 786
 787   TRACE("flags==0x%08x, chrg->cpMin==%d, chrg->cpMax==%d text==%s\n",
 788         flags, chrg->cpMin, chrg->cpMax, debugstr_w(text));
 789
 790   if (flags & ~(FR_DOWN | FR_MATCHCASE | FR_WHOLEWORD))
 791     FIXME("Flags 0x%08x not implemented\n",
 792         flags & ~(FR_DOWN | FR_MATCHCASE | FR_WHOLEWORD));
 793
 794   nMin = chrg->cpMin;
 795   if (chrg->cpMax == -1)
 796     nMax = nTextLen;
 797   else
 798     nMax = chrg->cpMax > nTextLen ? nTextLen : chrg->cpMax;
 799
 800   /* when searching up, if cpMin < cpMax, then instead of searching
 801    * on [cpMin,cpMax], we search on [0,cpMin], otherwise, search on
 802    * [cpMax, cpMin]. The exception is when cpMax is -1, in which
 803    * case, it is always bigger than cpMin.
 804    */
 805   if (!(flags & FR_DOWN))
 806   {
 807     int nSwap = nMax;
 808
 809     nMax = nMin > nTextLen ? nTextLen : nMin;
 810     if (nMin < nSwap || chrg->cpMax == -1)
 811       nMin = 0;
 812     else
 813       nMin = nSwap;
 814   }
 815
 816   if (!nLen || nMin < 0 || nMax < 0 || nMax < nMin)
 817   {
 818     if (chrgText)
 819       chrgText->cpMin = chrgText->cpMax = -1;
 820     return -1;
 821   }
 822
 823   if (flags & FR_DOWN) /* Forward search */
 824   {
 825     /* If possible, find the character before where the search starts */
 826     if ((flags & FR_WHOLEWORD) && nMin)
 827     {
 828       nStart = nMin - 1;
 829       item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
 830       if (!item)
 831       {
 832         if (chrgText)
 833           chrgText->cpMin = chrgText->cpMax = -1;
 834         return -1;
 835       }
 836       wLastChar = item->member.run.strText->szData[nStart];
 837     }
 838
 839     nStart = nMin;
 840     item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
 841     if (!item)
 842     {
 843       if (chrgText)
 844         chrgText->cpMin = chrgText->cpMax = -1;
 845       return -1;
 846     }
 847
 848     para = ME_GetParagraph(item);
 849     while (item
 850            && para->member.para.nCharOfs + item->member.run.nCharOfs + nStart + nLen <= nMax)
 851     {
 852       ME_DisplayItem *pCurItem = item;
 853       int nCurStart = nStart;
 854       int nMatched = 0;
 855
 856       while (pCurItem && ME_CharCompare(pCurItem->member.run.strText->szData[nCurStart + nMatched], text[nMatched], (flags & FR_MATCHCASE)))
 857       {
 858         if ((flags & FR_WHOLEWORD) && isalnumW(wLastChar))
 859           break;
 860
 861         nMatched++;
 862         if (nMatched == nLen)
 863         {
 864           ME_DisplayItem *pNextItem = pCurItem;
 865           int nNextStart = nCurStart;
 866           WCHAR wNextChar;
 867
 868           /* Check to see if next character is a whitespace */
 869           if (flags & FR_WHOLEWORD)
 870           {
 871             if (nCurStart + nMatched == ME_StrLen(pCurItem->member.run.strText))
 872             {
 873               pNextItem = ME_FindItemFwd(pCurItem, diRun);
 874               nNextStart = -nMatched;
 875             }
 876
 877             if (pNextItem)
 878               wNextChar = pNextItem->member.run.strText->szData[nNextStart + nMatched];
 879             else
 880               wNextChar = ' ';
 881
 882             if (isalnumW(wNextChar))
 883               break;
 884           }
 885
 886           nStart += para->member.para.nCharOfs + pCurItem->member.run.nCharOfs;
 887           if (chrgText)
 888           {
 889             chrgText->cpMin = nStart;
 890             chrgText->cpMax = nStart + nLen;
 891           }
 892           TRACE("found at %d-%d\n", nStart, nStart + nLen);
 893           return nStart;
 894         }
 895         if (nCurStart + nMatched == ME_StrLen(pCurItem->member.run.strText))
 896         {
 897           pCurItem = ME_FindItemFwd(pCurItem, diRun);
 898           para = ME_GetParagraph(pCurItem);
 899           nCurStart = -nMatched;
 900         }
 901       }
 902       if (pCurItem)
 903         wLastChar = pCurItem->member.run.strText->szData[nCurStart + nMatched];
 904       else
 905         wLastChar = ' ';
 906
 907       nStart++;
 908       if (nStart == ME_StrLen(item->member.run.strText))
 909       {
 910         item = ME_FindItemFwd(item, diRun);
 911         para = ME_GetParagraph(item);
 912         nStart = 0;
 913       }
 914     }
 915   }
 916   else /* Backward search */
 917   {
 918     /* If possible, find the character after where the search ends */
 919     if ((flags & FR_WHOLEWORD) && nMax < nTextLen - 1)
 920     {
 921       nEnd = nMax + 1;
 922       item = ME_FindItemAtOffset(editor, diRun, nEnd, &nEnd);
 923       if (!item)
 924       {
 925         if (chrgText)
 926           chrgText->cpMin = chrgText->cpMax = -1;
 927         return -1;
 928       }
 929       wLastChar = item->member.run.strText->szData[nEnd];
 930     }
 931
 932     nEnd = nMax;
 933     item = ME_FindItemAtOffset(editor, diRun, nEnd, &nEnd);
 934     if (!item)
 935     {
 936       if (chrgText)
 937         chrgText->cpMin = chrgText->cpMax = -1;
 938       return -1;
 939     }
 940
 941     para = ME_GetParagraph(item);
 942
 943     while (item
 944            && para->member.para.nCharOfs + item->member.run.nCharOfs + nEnd - nLen >= nMin)
 945     {
 946       ME_DisplayItem *pCurItem = item;
 947       int nCurEnd = nEnd;
 948       int nMatched = 0;
 949
 950       if (nCurEnd - nMatched == 0)
 951       {
 952         pCurItem = ME_FindItemBack(pCurItem, diRun);
 953         para = ME_GetParagraph(pCurItem);
 954         nCurEnd = ME_StrLen(pCurItem->member.run.strText) + nMatched;
 955       }
 956
 957       while (pCurItem && ME_CharCompare(pCurItem->member.run.strText->szData[nCurEnd - nMatched - 1], text[nLen - nMatched - 1], (flags & FR_MATCHCASE)))
 958       {
 959         if ((flags & FR_WHOLEWORD) && isalnumW(wLastChar))
 960           break;
 961
 962         nMatched++;
 963         if (nMatched == nLen)
 964         {
 965           ME_DisplayItem *pPrevItem = pCurItem;
 966           int nPrevEnd = nCurEnd;
 967           WCHAR wPrevChar;
 968
 969           /* Check to see if previous character is a whitespace */
 970           if (flags & FR_WHOLEWORD)
 971           {
 972             if (nPrevEnd - nMatched == 0)
 973             {
 974               pPrevItem = ME_FindItemBack(pCurItem, diRun);
 975               if (pPrevItem)
 976                 nPrevEnd = ME_StrLen(pPrevItem->member.run.strText) + nMatched;
 977             }
 978
 979             if (pPrevItem)
 980               wPrevChar = pPrevItem->member.run.strText->szData[nPrevEnd - nMatched - 1];
 981             else
 982               wPrevChar = ' ';
 983
 984             if (isalnumW(wPrevChar))
 985               break;
 986           }
 987
 988           nStart = para->member.para.nCharOfs + pCurItem->member.run.nCharOfs + nCurEnd - nMatched;
 989           if (chrgText)
 990           {
 991             chrgText->cpMin = nStart;
 992             chrgText->cpMax = nStart + nLen;
 993           }
 994           TRACE("found at %d-%d\n", nStart, nStart + nLen);
 995           return nStart;
 996         }
 997         if (nCurEnd - nMatched == 0)
 998         {
 999           pCurItem = ME_FindItemBack(pCurItem, diRun);
1000           /* Don't care about pCurItem becoming NULL here; it's already taken
1001            * care of in the exterior loop condition */
1002           para = ME_GetParagraph(pCurItem);
1003           nCurEnd = ME_StrLen(pCurItem->member.run.strText) + nMatched;
1004         }
1005       }
1006       if (pCurItem)
1007         wLastChar = pCurItem->member.run.strText->szData[nCurEnd - nMatched - 1];
1008       else
1009         wLastChar = ' ';
1010
1011       nEnd--;
1012       if (nEnd < 0)
1013       {
1014         item = ME_FindItemBack(item, diRun);
1015         para = ME_GetParagraph(item);
1016         nEnd = ME_StrLen(item->member.run.strText);
1017       }
1018     }
1019   }
1020   TRACE("not found\n");
1021   if (chrgText)
1022     chrgText->cpMin = chrgText->cpMax = -1;
1023   return -1;
1024 }
1025
1026
1027 static BOOL
1028 ME_KeyDown(ME_TextEditor *editor, WORD nKey)
1029 {
1030   BOOL ctrl_is_down = GetKeyState(VK_CONTROL) & 0x8000;
1031   BOOL shift_is_down = GetKeyState(VK_SHIFT) & 0x8000;
1032
1033   switch (nKey)
1034   {
1035     case VK_LEFT:
1036     case VK_RIGHT:
1037     case VK_UP:
1038     case VK_DOWN:
1039     case VK_HOME:
1040     case VK_END:
1041     case VK_PRIOR:
1042     case VK_NEXT:
1043       ME_ArrowKey(editor, nKey, shift_is_down, ctrl_is_down);
1044       return TRUE;
1045     case VK_BACK:
1046     case VK_DELETE:
1047       /* FIXME backspace and delete aren't the same, they act different wrt paragraph style of the merged paragraph */
1048       if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY)
1049         return FALSE;
1050       if (ME_IsSelection(editor))
1051         ME_DeleteSelection(editor);
1052       else if (nKey == VK_DELETE || ME_ArrowKey(editor, VK_LEFT, FALSE, FALSE))
1053         ME_DeleteTextAtCursor(editor, 1, 1);
1054       else
1055         return TRUE;
1056       ME_CommitUndo(editor);
1057       ME_UpdateRepaint(editor);
1058       ME_SendRequestResize(editor, FALSE);
1059       return TRUE;
1060
1061     default:
1062       if (ctrl_is_down)
1063       {
1064         if (nKey == 'W')
1065         {
1066           CHARFORMAT2W chf;
1067           char buf[2048];
1068           chf.cbSize = sizeof(chf);
1069
1070           ME_GetSelectionCharFormat(editor, &chf);
1071           ME_DumpStyleToBuf(&chf, buf);
1072           MessageBoxA(NULL, buf, "Style dump", MB_OK);
1073         }
1074         if (nKey == 'Q')
1075         {
1076           ME_CheckCharOffsets(editor);
1077         }
1078       }
1079   }
1080   return FALSE;
1081 }
1082
1083 static BOOL ME_ShowContextMenu(ME_TextEditor *editor, int x, int y)
1084 {
1085   CHARRANGE selrange;
1086   HMENU menu;
1087   int seltype = 0;
1088   if(!editor->lpOleCallback)
1089     return FALSE;
1090   ME_GetSelection(editor, (int *)&selrange.cpMin, (int *)&selrange.cpMax);
1091   if(selrange.cpMin == selrange.cpMax)
1092     seltype |= SEL_EMPTY;
1093   else
1094   {
1095     /* FIXME: Handle objects */
1096     seltype |= SEL_TEXT;
1097     if(selrange.cpMax-selrange.cpMin > 1)
1098       seltype |= SEL_MULTICHAR;
1099   }
1100   if(SUCCEEDED(IRichEditOleCallback_GetContextMenu(editor->lpOleCallback, seltype, NULL, &selrange, &menu)))
1101   {
1102     TrackPopupMenu(menu, TPM_LEFTALIGN | TPM_RIGHTBUTTON, x, y, 0, GetParent(editor->hWnd), NULL);
1103     DestroyMenu(menu);
1104   }
1105   return TRUE;
1106 }
1107
1108 ME_TextEditor *ME_MakeEditor(HWND hWnd) {
1109   ME_TextEditor *ed = ALLOC_OBJ(ME_TextEditor);
1110   HDC hDC;
1111   int i;
1112   ed->hWnd = hWnd;
1113   ed->bEmulateVersion10 = FALSE;
1114   ed->pBuffer = ME_MakeText();
1115   hDC = GetDC(hWnd);
1116   ME_MakeFirstParagraph(hDC, ed->pBuffer);
1117   ReleaseDC(hWnd, hDC);
1118   ed->bCaretShown = FALSE;
1119   ed->nCursors = 2;
1120   ed->pCursors = ALLOC_N_OBJ(ME_Cursor, ed->nCursors);
1121   ed->pCursors[0].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
1122   ed->pCursors[0].nOffset = 0;
1123   ed->pCursors[1].pRun = ME_FindItemFwd(ed->pBuffer->pFirst, diRun);
1124   ed->pCursors[1].nOffset = 0;
1125   ed->nLastTotalLength = ed->nTotalLength = 0;
1126   ed->nUDArrowX = -1;
1127   ed->nSequence = 0;
1128   ed->rgbBackColor = -1;
1129   ed->hbrBackground = GetSysColorBrush(COLOR_WINDOW);
1130   ed->bCaretAtEnd = FALSE;
1131   ed->nEventMask = 0;
1132   ed->nModifyStep = 0;
1133   ed->nTextLimit = TEXT_LIMIT_DEFAULT;
1134   ed->pUndoStack = ed->pRedoStack = ed->pUndoStackBottom = NULL;
1135   ed->nUndoStackSize = 0;
1136   ed->nUndoLimit = STACK_SIZE_DEFAULT;
1137   ed->nUndoMode = umAddToUndo;
1138   ed->nParagraphs = 1;
1139   ed->nLastSelStart = ed->nLastSelEnd = 0;
1140   ed->pLastSelStartPara = ed->pLastSelEndPara = ME_FindItemFwd(ed->pBuffer->pFirst, diParagraph);
1141   ed->nZoomNumerator = ed->nZoomDenominator = 0;
1142   ed->bRedraw = TRUE;
1143   ed->bHideSelection = FALSE;
1144   ed->nInvalidOfs = -1;
1145   ed->pfnWordBreak = NULL;
1146   ed->lpOleCallback = NULL;
1147   ed->mode = TM_RICHTEXT | TM_MULTILEVELUNDO | TM_MULTICODEPAGE;
1148   ed->AutoURLDetect_bEnable = FALSE;
1149   GetClientRect(hWnd, &ed->rcFormat);
1150   for (i=0; i<HFONT_CACHE_SIZE; i++)
1151   {
1152     ed->pFontCache[i].nRefs = 0;
1153     ed->pFontCache[i].nAge = 0;
1154     ed->pFontCache[i].hFont = NULL;
1155   }
1156
1157   ME_CheckCharOffsets(ed);
1158
1159   if (GetWindowLongW(hWnd, GWL_STYLE) & ES_PASSWORD)
1160     ed->cPasswordMask = '*';
1161   else
1162     ed->cPasswordMask = 0;
1163
1164   return ed;
1165 }
1166
1167 typedef struct tagME_GlobalDestStruct
1168 {
1169   HGLOBAL hData;
1170   int nLength;
1171 } ME_GlobalDestStruct;
1172
1173 static DWORD CALLBACK ME_ReadFromHGLOBALUnicode(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
1174 {
1175   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
1176   int i;
1177   WORD *pSrc, *pDest;
1178
1179   cb = cb >> 1;
1180   pDest = (WORD *)lpBuff;
1181   pSrc = (WORD *)GlobalLock(pData->hData);
1182   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
1183     pDest[i] = pSrc[pData->nLength+i];
1184   }
1185   pData->nLength += i;
1186   *pcb = 2*i;
1187   GlobalUnlock(pData->hData);
1188   return 0;
1189 }
1190
1191 static DWORD CALLBACK ME_ReadFromHGLOBALRTF(DWORD_PTR dwCookie, LPBYTE lpBuff, LONG cb, LONG *pcb)
1192 {
1193   ME_GlobalDestStruct *pData = (ME_GlobalDestStruct *)dwCookie;
1194   int i;
1195   BYTE *pSrc, *pDest;
1196
1197   pDest = lpBuff;
1198   pSrc = (BYTE *)GlobalLock(pData->hData);
1199   for (i = 0; i<cb && pSrc[pData->nLength+i]; i++) {
1200     pDest[i] = pSrc[pData->nLength+i];
1201   }
1202   pData->nLength += i;
1203   *pcb = i;
1204   GlobalUnlock(pData->hData);
1205   return 0;
1206 }
1207
1208
1209 void ME_DestroyEditor(ME_TextEditor *editor)
1210 {
1211   ME_DisplayItem *pFirst = editor->pBuffer->pFirst;
1212   ME_DisplayItem *p = pFirst, *pNext = NULL;
1213   int i;
1214
1215   ME_ClearTempStyle(editor);
1216   ME_EmptyUndoStack(editor);
1217   while(p) {
1218     pNext = p->next;
1219     ME_DestroyDisplayItem(p);
1220     p = pNext;
1221   }
1222   ME_ReleaseStyle(editor->pBuffer->pDefaultStyle);
1223   for (i=0; i<HFONT_CACHE_SIZE; i++)
1224   {
1225     if (editor->pFontCache[i].hFont)
1226       DeleteObject(editor->pFontCache[i].hFont);
1227   }
1228   DeleteObject(editor->hbrBackground);
1229   if(editor->lpOleCallback)
1230     IUnknown_Release(editor->lpOleCallback);
1231
1232   FREE_OBJ(editor->pBuffer);
1233   FREE_OBJ(editor->pCursors);
1234
1235   FREE_OBJ(editor);
1236 }
1237
1238 static const WCHAR wszClassName[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '2', '0', 'W', 0};
1239 static const WCHAR wszClassName50[] = {'R', 'i', 'c', 'h', 'E', 'd', 'i', 't', '5', '0', 'W', 0};
1240 static const WCHAR wszClassNameListBox[] = {'R','E','L','i','s','t','B','o','x','2','0','W', 0};
1241 static const WCHAR wszClassNameComboBox[] = {'R','E','C','o','m','b','o','B','o','x','2','0','W', 0};
1242
1243 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
1244 {
1245     TRACE("\n");
1246     switch (fdwReason)
1247     {
1248     case DLL_PROCESS_ATTACH:
1249       DisableThreadLibraryCalls(hinstDLL);
1250       me_heap = HeapCreate (0, 0x10000, 0);
1251       ME_RegisterEditorClass(hinstDLL);
1252       LookupInit();
1253       break;
1254
1255     case DLL_PROCESS_DETACH:
1256       UnregisterClassW(wszClassName, 0);
1257       UnregisterClassW(wszClassName50, 0);
1258       UnregisterClassA("RichEdit20A", 0);
1259       UnregisterClassA("RichEdit50A", 0);
1260       if (ME_ListBoxRegistered)
1261           UnregisterClassW(wszClassNameListBox, 0);
1262       if (ME_ComboBoxRegistered)
1263           UnregisterClassW(wszClassNameComboBox, 0);
1264       LookupCleanup();
1265       HeapDestroy (me_heap);
1266       me_heap = NULL;
1267       break;
1268     }
1269     return TRUE;
1270 }
1271
1272
1273 #define UNSUPPORTED_MSG(e) \
1274   case e: \
1275     FIXME(#e ": stub\n"); \
1276     return DefWindowProcW(hWnd, msg, wParam, lParam);
1277
1278 static const char * const edit_messages[] = {
1279   "EM_GETSEL",
1280   "EM_SETSEL",
1281   "EM_GETRECT",
1282   "EM_SETRECT",
1283   "EM_SETRECTNP",
1284   "EM_SCROLL",
1285   "EM_LINESCROLL",
1286   "EM_SCROLLCARET",
1287   "EM_GETMODIFY",
1288   "EM_SETMODIFY",
1289   "EM_GETLINECOUNT",
1290   "EM_LINEINDEX",
1291   "EM_SETHANDLE",
1292   "EM_GETHANDLE",
1293   "EM_GETTHUMB",
1294   "EM_UNKNOWN_BF",
1295   "EM_UNKNOWN_C0",
1296   "EM_LINELENGTH",
1297   "EM_REPLACESEL",
1298   "EM_UNKNOWN_C3",
1299   "EM_GETLINE",
1300   "EM_LIMITTEXT",
1301   "EM_CANUNDO",
1302   "EM_UNDO",
1303   "EM_FMTLINES",
1304   "EM_LINEFROMCHAR",
1305   "EM_UNKNOWN_CA",
1306   "EM_SETTABSTOPS",
1307   "EM_SETPASSWORDCHAR",
1308   "EM_EMPTYUNDOBUFFER",
1309   "EM_GETFIRSTVISIBLELINE",
1310   "EM_SETREADONLY",
1311   "EM_SETWORDBREAKPROC",
1312   "EM_GETWORDBREAKPROC",
1313   "EM_GETPASSWORDCHAR",
1314   "EM_SETMARGINS",
1315   "EM_GETMARGINS",
1316   "EM_GETLIMITTEXT",
1317   "EM_POSFROMCHAR",
1318   "EM_CHARFROMPOS"
1319 };
1320
1321 static const char * const richedit_messages[] = {
1322   "EM_CANPASTE",
1323   "EM_DISPLAYBAND",
1324   "EM_EXGETSEL",
1325   "EM_EXLIMITTEXT",
1326   "EM_EXLINEFROMCHAR",
1327   "EM_EXSETSEL",
1328   "EM_FINDTEXT",
1329   "EM_FORMATRANGE",
1330   "EM_GETCHARFORMAT",
1331   "EM_GETEVENTMASK",
1332   "EM_GETOLEINTERFACE",
1333   "EM_GETPARAFORMAT",
1334   "EM_GETSELTEXT",
1335   "EM_HIDESELECTION",
1336   "EM_PASTESPECIAL",
1337   "EM_REQUESTRESIZE",
1338   "EM_SELECTIONTYPE",
1339   "EM_SETBKGNDCOLOR",
1340   "EM_SETCHARFORMAT",
1341   "EM_SETEVENTMASK",
1342   "EM_SETOLECALLBACK",
1343   "EM_SETPARAFORMAT",
1344   "EM_SETTARGETDEVICE",
1345   "EM_STREAMIN",
1346   "EM_STREAMOUT",
1347   "EM_GETTEXTRANGE",
1348   "EM_FINDWORDBREAK",
1349   "EM_SETOPTIONS",
1350   "EM_GETOPTIONS",
1351   "EM_FINDTEXTEX",
1352   "EM_GETWORDBREAKPROCEX",
1353   "EM_SETWORDBREAKPROCEX",
1354   "EM_SETUNDOLIMIT",
1355   "EM_UNKNOWN_USER_83",
1356   "EM_REDO",
1357   "EM_CANREDO",
1358   "EM_GETUNDONAME",
1359   "EM_GETREDONAME",
1360   "EM_STOPGROUPTYPING",
1361   "EM_SETTEXTMODE",
1362   "EM_GETTEXTMODE",
1363   "EM_AUTOURLDETECT",
1364   "EM_GETAUTOURLDETECT",
1365   "EM_SETPALETTE",
1366   "EM_GETTEXTEX",
1367   "EM_GETTEXTLENGTHEX",
1368   "EM_SHOWSCROLLBAR",
1369   "EM_SETTEXTEX",
1370   "EM_UNKNOWN_USER_98",
1371   "EM_UNKNOWN_USER_99",
1372   "EM_SETPUNCTUATION",
1373   "EM_GETPUNCTUATION",
1374   "EM_SETWORDWRAPMODE",
1375   "EM_GETWORDWRAPMODE",
1376   "EM_SETIMECOLOR",
1377   "EM_GETIMECOLOR",
1378   "EM_SETIMEOPTIONS",
1379   "EM_GETIMEOPTIONS",
1380   "EM_CONVPOSITION",
1381   "EM_UNKNOWN_USER_109",
1382   "EM_UNKNOWN_USER_110",
1383   "EM_UNKNOWN_USER_111",
1384   "EM_UNKNOWN_USER_112",
1385   "EM_UNKNOWN_USER_113",
1386   "EM_UNKNOWN_USER_114",
1387   "EM_UNKNOWN_USER_115",
1388   "EM_UNKNOWN_USER_116",
1389   "EM_UNKNOWN_USER_117",
1390   "EM_UNKNOWN_USER_118",
1391   "EM_UNKNOWN_USER_119",
1392   "EM_SETLANGOPTIONS",
1393   "EM_GETLANGOPTIONS",
1394   "EM_GETIMECOMPMODE",
1395   "EM_FINDTEXTW",
1396   "EM_FINDTEXTEXW",
1397   "EM_RECONVERSION",
1398   "EM_SETIMEMODEBIAS",
1399   "EM_GETIMEMODEBIAS"
1400 };
1401
1402 static const char *
1403 get_msg_name(UINT msg)
1404 {
1405   if (msg >= EM_GETSEL && msg <= EM_CHARFROMPOS)
1406     return edit_messages[msg - EM_GETSEL];
1407   if (msg >= EM_CANPASTE && msg <= EM_GETIMEMODEBIAS)
1408     return richedit_messages[msg - EM_CANPASTE];
1409   return "";
1410 }
1411
1412 /******************************************************************
1413  *        RichEditANSIWndProc (RICHED20.10)
1414  */
1415 LRESULT WINAPI RichEditANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
1416   ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongPtrW(hWnd, 0);
1417
1418   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
1419         hWnd, msg, get_msg_name(msg), wParam, lParam);
1420
1421   if (!editor && msg != WM_NCCREATE && msg != WM_NCDESTROY) {
1422     ERR("RichEditANSIWndProc called with invalid hWnd %p - application bug?\n", hWnd);
1423     return 0;
1424   }
1425
1426   switch(msg) {
1427
1428   UNSUPPORTED_MSG(EM_DISPLAYBAND)
1429   UNSUPPORTED_MSG(EM_FINDWORDBREAK)
1430   UNSUPPORTED_MSG(EM_FMTLINES)
1431   UNSUPPORTED_MSG(EM_FORMATRANGE)
1432   UNSUPPORTED_MSG(EM_GETBIDIOPTIONS)
1433   UNSUPPORTED_MSG(EM_GETEDITSTYLE)
1434   UNSUPPORTED_MSG(EM_GETIMECOMPMODE)
1435   /* UNSUPPORTED_MSG(EM_GETIMESTATUS) missing in Wine headers */
1436   UNSUPPORTED_MSG(EM_GETLANGOPTIONS)
1437   /* UNSUPPORTED_MSG(EM_GETOLEINTERFACE) separate stub */
1438   UNSUPPORTED_MSG(EM_GETREDONAME)
1439   UNSUPPORTED_MSG(EM_GETTEXTMODE)
1440   UNSUPPORTED_MSG(EM_GETTYPOGRAPHYOPTIONS)
1441   UNSUPPORTED_MSG(EM_GETUNDONAME)
1442   UNSUPPORTED_MSG(EM_GETWORDBREAKPROCEX)
1443   UNSUPPORTED_MSG(EM_LIMITTEXT) /* also known as EM_SETLIMITTEXT */
1444   UNSUPPORTED_MSG(EM_PASTESPECIAL)
1445   UNSUPPORTED_MSG(EM_SELECTIONTYPE)
1446   UNSUPPORTED_MSG(EM_SETBIDIOPTIONS)
1447   UNSUPPORTED_MSG(EM_SETEDITSTYLE)
1448   UNSUPPORTED_MSG(EM_SETFONTSIZE)
1449   UNSUPPORTED_MSG(EM_SETLANGOPTIONS)
1450   UNSUPPORTED_MSG(EM_SETPALETTE)
1451   UNSUPPORTED_MSG(EM_SETTABSTOPS)
1452   UNSUPPORTED_MSG(EM_SETTARGETDEVICE)
1453   UNSUPPORTED_MSG(EM_SETTYPOGRAPHYOPTIONS)
1454   UNSUPPORTED_MSG(EM_SETWORDBREAKPROCEX)
1455   UNSUPPORTED_MSG(WM_STYLECHANGING)
1456   UNSUPPORTED_MSG(WM_STYLECHANGED)
1457 /*  UNSUPPORTED_MSG(WM_UNICHAR) FIXME missing in Wine headers */
1458
1459 /* Messages specific to Richedit controls */
1460
1461   case EM_STREAMIN:
1462    return ME_StreamIn(editor, wParam, (EDITSTREAM*)lParam);
1463   case EM_STREAMOUT:
1464    return ME_StreamOut(editor, wParam, (EDITSTREAM *)lParam);
1465   case WM_GETDLGCODE:
1466   {
1467     UINT code = DLGC_WANTCHARS|DLGC_WANTARROWS;
1468     if (GetWindowLongW(hWnd, GWL_STYLE)&ES_WANTRETURN)
1469       code |= 0; /* FIXME what can we do here ? ask for messages and censor them ? */
1470     return code;
1471   }
1472   case WM_NCCREATE:
1473   {
1474     CREATESTRUCTW *pcs = (CREATESTRUCTW *)lParam;
1475     TRACE("WM_NCCREATE: style 0x%08x\n", pcs->style);
1476     editor = ME_MakeEditor(hWnd);
1477     SetWindowLongPtrW(hWnd, 0, (LONG_PTR)editor);
1478     pcs = 0; /* ignore */
1479     return TRUE;
1480   }
1481   case EM_EMPTYUNDOBUFFER:
1482     ME_EmptyUndoStack(editor);
1483     return 0;
1484   case EM_GETSEL:
1485   {
1486     /* Note: wParam/lParam can be NULL */
1487     UINT from, to;
1488     PUINT pfrom = wParam ? (PUINT)wParam : &from;
1489     PUINT pto = lParam ? (PUINT)lParam : &to;
1490     ME_GetSelection(editor, (int *)pfrom, (int *)pto);
1491     if ((*pfrom|*pto) & 0xFFFF0000)
1492       return -1;
1493     return MAKELONG(*pfrom,*pto);
1494   }
1495   case EM_EXGETSEL:
1496   {
1497     CHARRANGE *pRange = (CHARRANGE *)lParam;
1498     ME_GetSelection(editor, (int *)&pRange->cpMin, (int *)&pRange->cpMax);
1499     TRACE("EM_EXGETSEL = (%d,%d)\n", pRange->cpMin, pRange->cpMax);
1500     return 0;
1501   }
1502   case EM_SETUNDOLIMIT:
1503   {
1504     if ((int)wParam < 0)
1505       editor->nUndoLimit = STACK_SIZE_DEFAULT;
1506     else
1507       editor->nUndoLimit = min(wParam, STACK_SIZE_MAX);
1508     /* Setting a max stack size keeps wine from getting killed
1509       for hogging memory. Windows allocates all this memory at once, so
1510       no program would realistically set a value above our maxiumum. */
1511     return editor->nUndoLimit;
1512   }
1513   case EM_CANUNDO:
1514     return editor->pUndoStack != NULL;
1515   case EM_CANREDO:
1516     return editor->pRedoStack != NULL;
1517   case WM_UNDO: /* FIXME: actually not the same */
1518   case EM_UNDO:
1519     ME_Undo(editor);
1520     return 0;
1521   case EM_REDO:
1522     ME_Redo(editor);
1523     return 0;
1524   case EM_GETOPTIONS:
1525   {
1526     /* these flags are equivalent to the ES_* counterparts */
1527     DWORD mask = ECO_VERTICAL | ECO_AUTOHSCROLL | ECO_AUTOVSCROLL |
1528                  ECO_NOHIDESEL | ECO_READONLY | ECO_WANTRETURN;
1529     DWORD settings = GetWindowLongW(hWnd, GWL_STYLE) & mask;
1530
1531     return settings;
1532   }
1533   case EM_SETOPTIONS:
1534   {
1535     /* these flags are equivalent to ES_* counterparts
1536      * ECO_READONLY is already implemented in the code, only requires
1537      * setting the bit to work
1538      */
1539     DWORD mask = ECO_VERTICAL | ECO_AUTOHSCROLL | ECO_AUTOVSCROLL |
1540                  ECO_NOHIDESEL | ECO_READONLY | ECO_WANTRETURN;
1541     DWORD raw = GetWindowLongW(hWnd, GWL_STYLE);
1542     DWORD settings = mask & raw;
1543
1544     switch(wParam)
1545     {
1546       case ECOOP_SET:
1547         settings = lParam;
1548         break;
1549       case ECOOP_OR:
1550         settings |= lParam;
1551         break;
1552       case ECOOP_AND:
1553         settings &= lParam;
1554         break;
1555       case ECOOP_XOR:
1556         settings ^= lParam;
1557     }
1558     SetWindowLongW(hWnd, GWL_STYLE, (raw & ~mask) | (settings & mask));
1559
1560     if (lParam & ECO_AUTOWORDSELECTION)
1561       FIXME("ECO_AUTOWORDSELECTION not implemented yet!\n");
1562     if (lParam & ECO_SELECTIONBAR)
1563       FIXME("ECO_SELECTIONBAR not implemented yet!\n");
1564     if (lParam & ECO_VERTICAL)
1565       FIXME("ECO_VERTICAL not implemented yet!\n");
1566     if (lParam & ECO_AUTOHSCROLL)
1567       FIXME("ECO_AUTOHSCROLL not implemented yet!\n");
1568     if (lParam & ECO_AUTOVSCROLL)
1569       FIXME("ECO_AUTOVSCROLL not implemented yet!\n");
1570     if (lParam & ECO_NOHIDESEL)
1571       FIXME("ECO_NOHIDESEL not implemented yet!\n");
1572     if (lParam & ECO_WANTRETURN)
1573       FIXME("ECO_WANTRETURN not implemented yet!\n");
1574
1575     return settings;
1576   }
1577   case EM_SETSEL:
1578   {
1579     ME_InvalidateSelection(editor);
1580     ME_SetSelection(editor, wParam, lParam);
1581     ME_InvalidateSelection(editor);
1582     ME_SendSelChange(editor);
1583     return 0;
1584   }
1585   case EM_SETSCROLLPOS:
1586   {
1587     POINT *point = (POINT *)lParam;
1588     ME_ScrollAbs(editor, point->y);
1589     return 0;
1590   }
1591   case EM_AUTOURLDETECT:
1592   {
1593     if (wParam==1 || wParam ==0)
1594     {
1595         editor->AutoURLDetect_bEnable = (BOOL)wParam;
1596         return 0;
1597     }
1598     return E_INVALIDARG;
1599   }
1600   case EM_GETAUTOURLDETECT:
1601   {
1602     return editor->AutoURLDetect_bEnable;
1603   }
1604   case EM_EXSETSEL:
1605   {
1606     int start, end;
1607     CHARRANGE range = *(CHARRANGE *)lParam;
1608
1609     TRACE("EM_EXSETSEL (%d,%d)\n", range.cpMin, range.cpMax);
1610
1611     /* if cpMin < 0, then selection is deselected and caret moved to end of
1612      * the current selection  */
1613     if (range.cpMin < 0)
1614     {
1615         ME_GetSelection(editor, &start, &end);
1616         range.cpMin = end;
1617         range.cpMax = end;
1618     }
1619     else if (range.cpMax > ME_GetTextLength(editor) +1)
1620     {
1621       range.cpMax = ME_GetTextLength(editor) + 1;
1622     }
1623
1624     ME_InvalidateSelection(editor);
1625     ME_SetSelection(editor, range.cpMin, range.cpMax);
1626     ME_InvalidateSelection(editor);
1627     ME_SendSelChange(editor);
1628
1629     return range.cpMax;
1630   }
1631   case EM_SHOWSCROLLBAR:
1632   {
1633     ShowScrollBar(editor->hWnd, wParam, lParam);
1634     return 0;
1635   }
1636   case EM_SETTEXTEX:
1637   {
1638     LPWSTR wszText = (LPWSTR)lParam;
1639     SETTEXTEX *pStruct = (SETTEXTEX *)wParam;
1640     size_t len = wszText ? lstrlenW(wszText) : 0;
1641     int from, to;
1642     ME_Style *style;
1643     TRACE("EM_SETTEXTEX - %s, flags %d, cp %d\n", debugstr_w(wszText), (int)pStruct->flags, pStruct->codepage);
1644     if (pStruct->codepage != 1200) {
1645       FIXME("EM_SETTEXTEX only supports unicode right now!\n");
1646       return 0;
1647     }
1648     /* FIXME: this should support RTF strings too, according to MSDN */
1649     if (pStruct->flags & ST_SELECTION) {
1650       ME_GetSelection(editor, &from, &to);
1651       style = ME_GetSelectionInsertStyle(editor);
1652       ME_InternalDeleteText(editor, from, to - from);
1653       ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1654       ME_ReleaseStyle(style);
1655     }
1656     else {
1657       ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1658       ME_InsertTextFromCursor(editor, 0, wszText, len, editor->pBuffer->pDefaultStyle);
1659       len = 1;
1660     }
1661     ME_CommitUndo(editor);
1662     if (!(pStruct->flags & ST_KEEPUNDO))
1663       ME_EmptyUndoStack(editor);
1664     ME_UpdateRepaint(editor);
1665     return len;
1666   }
1667   case EM_SETBKGNDCOLOR:
1668   {
1669     LRESULT lColor = ME_GetBackColor(editor);
1670     if (editor->rgbBackColor != -1)
1671       DeleteObject(editor->hbrBackground);
1672     if (wParam)
1673     {
1674       editor->rgbBackColor = -1;
1675       editor->hbrBackground = GetSysColorBrush(COLOR_WINDOW);
1676     }
1677     else
1678     {
1679       editor->rgbBackColor = lParam;
1680       editor->hbrBackground = CreateSolidBrush(editor->rgbBackColor);
1681     }
1682     if (editor->bRedraw)
1683     {
1684       InvalidateRect(hWnd, NULL, TRUE);
1685       UpdateWindow(hWnd);
1686     }
1687     return lColor;
1688   }
1689   case EM_GETMODIFY:
1690     return editor->nModifyStep == 0 ? 0 : 1;
1691   case EM_SETMODIFY:
1692   {
1693     if (wParam)
1694       editor->nModifyStep = 0x80000000;
1695     else
1696       editor->nModifyStep = 0;
1697
1698     return 0;
1699   }
1700   case EM_SETREADONLY:
1701   {
1702     long nStyle = GetWindowLongW(hWnd, GWL_STYLE);
1703     if (wParam)
1704       nStyle |= ES_READONLY;
1705     else
1706       nStyle &= ~ES_READONLY;
1707     SetWindowLongW(hWnd, GWL_STYLE, nStyle);
1708     return 0;
1709   }
1710   case EM_SETEVENTMASK:
1711   {
1712     DWORD nOldMask = editor->nEventMask;
1713
1714     editor->nEventMask = lParam;
1715     return nOldMask;
1716   }
1717   case EM_GETEVENTMASK:
1718     return editor->nEventMask;
1719   case EM_SETCHARFORMAT:
1720   {
1721     CHARFORMAT2W buf, *p;
1722     BOOL bRepaint = TRUE;
1723     p = ME_ToCF2W(&buf, (CHARFORMAT2W *)lParam);
1724     if (!wParam || (editor->mode & TM_PLAINTEXT))
1725       ME_SetDefaultCharFormat(editor, p);
1726     else if (wParam == (SCF_WORD | SCF_SELECTION))
1727       FIXME("EM_SETCHARFORMAT: word selection not supported\n");
1728     else if (wParam == SCF_ALL)
1729       ME_SetCharFormat(editor, 0, ME_GetTextLength(editor), p);
1730     else {
1731       int from, to;
1732       ME_GetSelection(editor, &from, &to);
1733       bRepaint = (from != to);
1734       ME_SetSelectionCharFormat(editor, p);
1735     }
1736     ME_CommitUndo(editor);
1737     if (bRepaint)
1738       ME_UpdateRepaint(editor);
1739     return 0;
1740   }
1741   case EM_GETCHARFORMAT:
1742   {
1743     CHARFORMAT2W tmp, *dst = (CHARFORMAT2W *)lParam;
1744     if (dst->cbSize != sizeof(CHARFORMATA) &&
1745         dst->cbSize != sizeof(CHARFORMATW) &&
1746         dst->cbSize != sizeof(CHARFORMAT2A) &&
1747         dst->cbSize != sizeof(CHARFORMAT2W))
1748       return 0;
1749     tmp.cbSize = sizeof(tmp);
1750     if (!wParam)
1751       ME_GetDefaultCharFormat(editor, &tmp);
1752     else
1753       ME_GetSelectionCharFormat(editor, &tmp);
1754     ME_CopyToCFAny(dst, &tmp);
1755     return tmp.dwMask;
1756   }
1757   case EM_SETPARAFORMAT:
1758     ME_SetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1759     ME_UpdateRepaint(editor);
1760     ME_CommitUndo(editor);
1761     return 0;
1762   case EM_GETPARAFORMAT:
1763     ME_GetSelectionParaFormat(editor, (PARAFORMAT2 *)lParam);
1764     return 0;
1765   case EM_GETFIRSTVISIBLELINE:
1766   {
1767     ME_DisplayItem *p = editor->pBuffer->pFirst;
1768     int y = ME_GetYScrollPos(editor);
1769     int ypara = 0;
1770     int count = 0;
1771     int ystart, yend;
1772     while(p) {
1773       p = ME_FindItemFwd(p, diStartRowOrParagraphOrEnd);
1774       if (p->type == diTextEnd)
1775         break;
1776       if (p->type == diParagraph) {
1777         ypara = p->member.para.nYPos;
1778         continue;
1779       }
1780       ystart = ypara + p->member.row.nYPos;
1781       yend = ystart + p->member.row.nHeight;
1782       if (y < yend) {
1783         break;
1784       }
1785       count++;
1786     }
1787     return count;
1788   }
1789   case EM_HIDESELECTION:
1790   {
1791      editor->bHideSelection = (wParam != 0);
1792      ME_InvalidateSelection(editor);
1793      return 0;
1794   }
1795   case EM_LINESCROLL:
1796   {
1797     ME_ScrollDown(editor, lParam * 8); /* FIXME follow the original */
1798     return TRUE; /* Should return false if a single line richedit control */
1799   }
1800   case WM_CLEAR:
1801   {
1802     int from, to;
1803     ME_GetSelection(editor, &from, &to);
1804     ME_InternalDeleteText(editor, from, to-from);
1805     ME_CommitUndo(editor);
1806     ME_UpdateRepaint(editor);
1807     return 0;
1808   }
1809   case EM_REPLACESEL:
1810   {
1811     int from, to;
1812     ME_Style *style;
1813     LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
1814     size_t len = lstrlenW(wszText);
1815     TRACE("EM_REPLACESEL - %s\n", debugstr_w(wszText));
1816
1817     ME_GetSelection(editor, &from, &to);
1818     style = ME_GetSelectionInsertStyle(editor);
1819     ME_InternalDeleteText(editor, from, to-from);
1820     ME_InsertTextFromCursor(editor, 0, wszText, len, style);
1821     ME_ReleaseStyle(style);
1822     /* drop temporary style if line end */
1823     /*
1824      * FIXME question: does abc\n mean: put abc,
1825      * clear temp style, put \n? (would require a change)
1826      */
1827     if (len>0 && wszText[len-1] == '\n')
1828       ME_ClearTempStyle(editor);
1829     ME_EndToUnicode(hWnd, wszText);
1830     ME_CommitUndo(editor);
1831     if (!wParam)
1832       ME_EmptyUndoStack(editor);
1833     ME_UpdateRepaint(editor);
1834     return 0;
1835   }
1836   case EM_SCROLLCARET:
1837   {
1838     int top, bottom; /* row's edges relative to document top */
1839     int nPos;
1840     ME_DisplayItem *para, *row;
1841
1842     nPos = ME_GetYScrollPos(editor);
1843     row = ME_RowStart(editor->pCursors[0].pRun);
1844     para = ME_GetParagraph(row);
1845     top = para->member.para.nYPos + row->member.row.nYPos;
1846     bottom = top + row->member.row.nHeight;
1847
1848     if (top < nPos) /* caret above window */
1849       ME_ScrollAbs(editor,  top);
1850     else if (nPos + editor->sizeWindow.cy < bottom) /*below*/
1851       ME_ScrollAbs(editor, bottom - editor->sizeWindow.cy);
1852     return 0;
1853   }
1854   case WM_SETFONT:
1855   {
1856     LOGFONTW lf;
1857     CHARFORMAT2W fmt;
1858     HDC hDC;
1859     BOOL bRepaint = LOWORD(lParam);
1860
1861     if (!wParam)
1862       wParam = (WPARAM)GetStockObject(SYSTEM_FONT);
1863     GetObjectW((HGDIOBJ)wParam, sizeof(LOGFONTW), &lf);
1864     hDC = GetDC(hWnd);
1865     ME_CharFormatFromLogFont(hDC, &lf, &fmt);
1866     ReleaseDC(hWnd, hDC);
1867     ME_SetCharFormat(editor, 0, ME_GetTextLength(editor), &fmt);
1868     ME_SetDefaultCharFormat(editor, &fmt);
1869
1870     ME_CommitUndo(editor);
1871     if (bRepaint)
1872       ME_UpdateRepaint(editor);
1873     return 0;
1874   }
1875   case WM_SETTEXT:
1876   {
1877     ME_InternalDeleteText(editor, 0, ME_GetTextLength(editor));
1878     if (lParam)
1879     {
1880       TRACE("WM_SETTEXT lParam==%lx\n",lParam);
1881       if (!IsWindowUnicode(hWnd) && !strncmp((char *)lParam, "{\\rtf", 5))
1882       {
1883         /* Undocumented: WM_SETTEXT supports RTF text */
1884         ME_StreamInRTFString(editor, 0, (char *)lParam);
1885       }
1886       else
1887       {
1888         LPWSTR wszText = ME_ToUnicode(hWnd, (void *)lParam);
1889         TRACE("WM_SETTEXT - %s\n", debugstr_w(wszText)); /* debugstr_w() */
1890         if (lstrlenW(wszText) > 0)
1891         {
1892           /* uses default style! */
1893           ME_InsertTextFromCursor(editor, 0, wszText, -1, editor->pBuffer->pDefaultStyle);
1894         }
1895         ME_EndToUnicode(hWnd, wszText);
1896       }
1897     }
1898     else
1899       TRACE("WM_SETTEXT - NULL\n");
1900     ME_CommitUndo(editor);
1901     ME_EmptyUndoStack(editor);
1902     ME_SetSelection(editor, 0, 0);
1903     ME_UpdateRepaint(editor);
1904     return 0;
1905   }
1906   case EM_CANPASTE:
1907   {
1908     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1909     if (IsClipboardFormatAvailable(nRTFFormat))
1910       return TRUE;
1911     if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1912       return TRUE;
1913     return FALSE;
1914   }
1915   case WM_PASTE:
1916   {
1917     DWORD dwFormat = 0;
1918     EDITSTREAM es;
1919     ME_GlobalDestStruct gds;
1920     UINT nRTFFormat = RegisterClipboardFormatA("Rich Text Format");
1921     UINT cf = 0;
1922
1923     if (IsClipboardFormatAvailable(nRTFFormat))
1924       cf = nRTFFormat, dwFormat = SF_RTF;
1925     else if (IsClipboardFormatAvailable(CF_UNICODETEXT))
1926       cf = CF_UNICODETEXT, dwFormat = SF_TEXT|SF_UNICODE;
1927     else
1928       return 0;
1929
1930     if (!OpenClipboard(hWnd))
1931       return 0;
1932     gds.hData = GetClipboardData(cf);
1933     gds.nLength = 0;
1934     es.dwCookie = (DWORD)&gds;
1935     es.pfnCallback = dwFormat == SF_RTF ? ME_ReadFromHGLOBALRTF : ME_ReadFromHGLOBALUnicode;
1936     ME_StreamIn(editor, dwFormat|SFF_SELECTION, &es);
1937
1938     CloseClipboard();
1939     return 0;
1940   }
1941   case WM_CUT:
1942   case WM_COPY:
1943   {
1944     LPDATAOBJECT dataObj = NULL;
1945     CHARRANGE range;
1946     HRESULT hr = S_OK;
1947
1948     if (editor->cPasswordMask)
1949       return 0; /* Copying or Cutting masked text isn't allowed */
1950
1951     ME_GetSelection(editor, (int*)&range.cpMin, (int*)&range.cpMax);
1952     if(editor->lpOleCallback)
1953         hr = IRichEditOleCallback_GetClipboardData(editor->lpOleCallback, &range, RECO_COPY, &dataObj);
1954     if(FAILED(hr) || !dataObj)
1955         hr = ME_GetDataObject(editor, &range, &dataObj);
1956     if(SUCCEEDED(hr)) {
1957         hr = OleSetClipboard(dataObj);
1958         IDataObject_Release(dataObj);
1959     }
1960     if (SUCCEEDED(hr) && msg == WM_CUT)
1961     {
1962       ME_InternalDeleteText(editor, range.cpMin, range.cpMax-range.cpMin);
1963       ME_CommitUndo(editor);
1964       ME_UpdateRepaint(editor);
1965     }
1966     return 0;
1967   }
1968   case WM_GETTEXTLENGTH:
1969     return ME_GetTextLength(editor);
1970   case EM_GETTEXTLENGTHEX:
1971     return ME_GetTextLengthEx(editor, (GETTEXTLENGTHEX *)wParam);
1972   case WM_GETTEXT:
1973   {
1974     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
1975     tr.chrg.cpMin = 0;
1976     tr.chrg.cpMax = wParam-1;
1977     tr.lpstrText = (WCHAR *)lParam;
1978     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
1979   }
1980   case EM_GETTEXTEX:
1981   {
1982     GETTEXTEX *ex = (GETTEXTEX*)wParam;
1983     int nStart, nCount;
1984
1985     if (ex->flags & ~(GT_SELECTION | GT_USECRLF))
1986       FIXME("GETTEXTEX flags 0x%08x not supported\n", ex->flags & ~(GT_SELECTION | GT_USECRLF));
1987
1988     if (ex->flags & GT_SELECTION)
1989     {
1990       ME_GetSelection(editor, &nStart, &nCount);
1991       nCount -= nStart;
1992       nCount = min(nCount, ex->cb - 1);
1993     }
1994     else
1995     {
1996       nStart = 0;
1997       nCount = ex->cb - 1;
1998     }
1999     if (ex->codepage == 1200 || IsWindowUnicode(hWnd))
2000     {
2001       nCount = min(nCount, ex->cb / sizeof(WCHAR) - 1);
2002       return ME_GetTextW(editor, (LPWSTR)lParam, nStart, nCount, ex->flags & GT_USECRLF);
2003     }
2004     else
2005     {
2006       /* potentially each char may be a CR, why calculate the exact value with O(N) when
2007         we can just take a bigger buffer? :) */
2008       int crlfmul = (ex->flags & GT_USECRLF) ? 2 : 1;
2009       LPWSTR buffer = richedit_alloc((crlfmul*nCount + 1) * sizeof(WCHAR));
2010       DWORD buflen = ex->cb;
2011       LRESULT rc;
2012       DWORD flags = 0;
2013
2014       buflen = ME_GetTextW(editor, buffer, nStart, nCount, ex->flags & GT_USECRLF);
2015       rc = WideCharToMultiByte(ex->codepage, flags, buffer, -1, (LPSTR)lParam, ex->cb, ex->lpDefaultChar, ex->lpUsedDefaultChar);
2016
2017       richedit_free(buffer);
2018       return rc;
2019     }
2020   }
2021   case EM_GETSELTEXT:
2022   {
2023     int from, to;
2024     TEXTRANGEW tr; /* W and A differ only by rng->lpstrText */
2025     ME_GetSelection(editor, &from, &to);
2026     tr.chrg.cpMin = from;
2027     tr.chrg.cpMax = to;
2028     tr.lpstrText = (WCHAR *)lParam;
2029     return RichEditANSIWndProc(hWnd, EM_GETTEXTRANGE, 0, (LPARAM)&tr);
2030   }
2031   case EM_GETSCROLLPOS:
2032   {
2033       POINT *point = (POINT *)lParam;
2034       point->x = 0; /* FIXME side scrolling not implemented */
2035       point->y = ME_GetYScrollPos(editor);
2036       return 1;
2037   }
2038   case EM_GETTEXTRANGE:
2039   {
2040     TEXTRANGEW *rng = (TEXTRANGEW *)lParam;
2041     TRACE("EM_GETTEXTRANGE min=%d max=%d unicode=%d emul1.0=%d length=%d\n",
2042       rng->chrg.cpMin, rng->chrg.cpMax, IsWindowUnicode(hWnd),
2043       editor->bEmulateVersion10, ME_GetTextLength(editor));
2044     if (IsWindowUnicode(hWnd))
2045       return ME_GetTextW(editor, rng->lpstrText, rng->chrg.cpMin, rng->chrg.cpMax-rng->chrg.cpMin, editor->bEmulateVersion10);
2046     else
2047     {
2048       int nLen = rng->chrg.cpMax-rng->chrg.cpMin;
2049       WCHAR *p = ALLOC_N_OBJ(WCHAR, nLen+1);
2050       int nChars = ME_GetTextW(editor, p, rng->chrg.cpMin, nLen, editor->bEmulateVersion10);
2051       /* FIXME this is a potential security hole (buffer overrun)
2052          if you know more about wchar->mbyte conversion please explain
2053       */
2054       WideCharToMultiByte(CP_ACP, 0, p, nChars+1, (char *)rng->lpstrText, nLen+1, NULL, NULL);
2055       FREE_OBJ(p);
2056       return nChars;
2057     }
2058   }
2059   case EM_GETLINE:
2060   {
2061     ME_DisplayItem *run;
2062     const BOOL bUnicode = IsWindowUnicode(hWnd);
2063     const unsigned int nMaxChars = *(WORD *) lParam;
2064     unsigned int nEndChars, nCharsLeft = nMaxChars;
2065     char *dest = (char *) lParam;
2066     /* rich text editor 1.0 uses \r\n for line end, 2.0 uses just \r;
2067     we need to know how if we have the extra \n or not */
2068     int nLF = editor->bEmulateVersion10;
2069
2070     TRACE("EM_GETLINE: row=%d, nMaxChars=%d (%s)\n", (int) wParam, nMaxChars,
2071           bUnicode ? "Unicode" : "Ansi");
2072
2073     run = ME_FindRowWithNumber(editor, wParam);
2074     if (run == NULL)
2075       return 0;
2076
2077     while (nCharsLeft && (run = ME_FindItemFwd(run, diRunOrStartRow))
2078            && !(run->member.run.nFlags & MERF_ENDPARA))
2079     {
2080       unsigned int nCopy;
2081       ME_String *strText;
2082       if (run->type != diRun)
2083         break;
2084       strText = run->member.run.strText;
2085       nCopy = min(nCharsLeft, strText->nLen);
2086
2087       if (bUnicode)
2088         lstrcpynW((LPWSTR) dest, strText->szData, nCopy);
2089       else
2090         nCopy = WideCharToMultiByte(CP_ACP, 0, strText->szData, nCopy, dest,
2091                                     nCharsLeft, NULL, NULL);
2092       dest += nCopy * (bUnicode ? sizeof(WCHAR) : 1);
2093       nCharsLeft -= nCopy;
2094     }
2095
2096     /* append \r\0 (or \r\n\0 in 1.0), space allowing */
2097     nEndChars = min(nCharsLeft, 2 + nLF);
2098     nCharsLeft -= nEndChars;
2099     if (bUnicode)
2100     {
2101       const WCHAR src[] = {'\r', '\0'};
2102       const WCHAR src10[] = {'\r', '\n', '\0'};
2103       lstrcpynW((LPWSTR) dest, nLF ? src10 : src, nEndChars);
2104     }
2105     else
2106       lstrcpynA(dest, nLF ? "\r\n" : "\r", nEndChars);
2107
2108     TRACE("EM_GETLINE: got %u bytes\n", nMaxChars - nCharsLeft);
2109
2110     if (nEndChars == 2 + nLF)
2111       return nMaxChars - nCharsLeft - 1; /* don't count \0 */
2112     else
2113       return nMaxChars - nCharsLeft;
2114   }
2115   case EM_GETLINECOUNT:
2116   {
2117     ME_DisplayItem *item = editor->pBuffer->pFirst->next;
2118     int nRows = 0;
2119
2120     while (item != editor->pBuffer->pLast)
2121     {
2122       assert(item->type == diParagraph);
2123       nRows += item->member.para.nRows;
2124       item = item->member.para.next_para;
2125     }
2126     TRACE("EM_GETLINECOUNT: nRows==%d\n", nRows);
2127     return max(1, nRows);
2128   }
2129   case EM_LINEFROMCHAR:
2130   {
2131     if (wParam == -1)
2132       return ME_RowNumberFromCharOfs(editor, ME_GetCursorOfs(editor, 1));
2133     else
2134       return ME_RowNumberFromCharOfs(editor, wParam);
2135   }
2136   case EM_EXLINEFROMCHAR:
2137   {
2138     if (lParam == -1)
2139       return ME_RowNumberFromCharOfs(editor, ME_GetCursorOfs(editor,1));
2140     else
2141       return ME_RowNumberFromCharOfs(editor, lParam);
2142   }
2143   case EM_LINEINDEX:
2144   {
2145     ME_DisplayItem *item, *para;
2146     int nCharOfs;
2147
2148     if (wParam == -1)
2149       item = ME_FindItemBack(editor->pCursors[0].pRun, diStartRow);
2150     else
2151       item = ME_FindRowWithNumber(editor, wParam);
2152     if (!item)
2153       return -1;
2154     para = ME_GetParagraph(item);
2155     item = ME_FindItemFwd(item, diRun);
2156     nCharOfs = para->member.para.nCharOfs + item->member.run.nCharOfs;
2157     TRACE("EM_LINEINDEX: nCharOfs==%d\n", nCharOfs);
2158     return nCharOfs;
2159   }
2160   case EM_LINELENGTH:
2161   {
2162     ME_DisplayItem *item, *item_end;
2163     int nChars = 0, nThisLineOfs = 0, nNextLineOfs = 0;
2164
2165     if (wParam > ME_GetTextLength(editor))
2166       return 0;
2167     if (wParam == -1)
2168     {
2169       FIXME("EM_LINELENGTH: returning number of unselected characters on lines with selection unsupported.\n");
2170       return 0;
2171     }
2172     item = ME_FindItemAtOffset(editor, diRun, wParam, NULL);
2173     item = ME_RowStart(item);
2174     nThisLineOfs = ME_CharOfsFromRunOfs(editor, ME_FindItemFwd(item, diRun), 0);
2175     item_end = ME_FindItemFwd(item, diStartRowOrParagraphOrEnd);
2176     if (item_end->type == diStartRow)
2177       nNextLineOfs = ME_CharOfsFromRunOfs(editor, ME_FindItemFwd(item_end, diRun), 0);
2178     else
2179       nNextLineOfs = ME_FindItemFwd(item, diParagraphOrEnd)->member.para.nCharOfs
2180        - (editor->bEmulateVersion10?2:1);
2181     nChars = nNextLineOfs - nThisLineOfs;
2182     TRACE("EM_LINELENGTH(%d)==%d\n",wParam, nChars);
2183     return nChars;
2184   }
2185   case EM_EXLIMITTEXT:
2186   {
2187     if (wParam != 0 || lParam < 0)
2188      return 0;
2189     if (lParam == 0)
2190       editor->nTextLimit = 65536;
2191     else
2192       editor->nTextLimit = (int) lParam;
2193     return 0;
2194   }
2195   case EM_GETLIMITTEXT:
2196   {
2197     return editor->nTextLimit;
2198   }
2199   case EM_FINDTEXT:
2200   {
2201     FINDTEXTA *ft = (FINDTEXTA *)lParam;
2202     int nChars = MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, NULL, 0);
2203     WCHAR *tmp;
2204     LRESULT r;
2205
2206     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
2207       MultiByteToWideChar(CP_ACP, 0, ft->lpstrText, -1, tmp, nChars);
2208     r = ME_FindText(editor, wParam, &ft->chrg, tmp, NULL);
2209     FREE_OBJ( tmp );
2210     return r;
2211   }
2212   case EM_FINDTEXTEX:
2213   {
2214     FINDTEXTEXA *ex = (FINDTEXTEXA *)lParam;
2215     int nChars = MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, NULL, 0);
2216     WCHAR *tmp;
2217     LRESULT r;
2218
2219     if ((tmp = ALLOC_N_OBJ(WCHAR, nChars)) != NULL)
2220       MultiByteToWideChar(CP_ACP, 0, ex->lpstrText, -1, tmp, nChars);
2221     r = ME_FindText(editor, wParam, &ex->chrg, tmp, &ex->chrgText);
2222     FREE_OBJ( tmp );
2223     return r;
2224   }
2225   case EM_FINDTEXTW:
2226   {
2227     FINDTEXTW *ft = (FINDTEXTW *)lParam;
2228     return ME_FindText(editor, wParam, &ft->chrg, ft->lpstrText, NULL);
2229   }
2230   case EM_FINDTEXTEXW:
2231   {
2232     FINDTEXTEXW *ex = (FINDTEXTEXW *)lParam;
2233     return ME_FindText(editor, wParam, &ex->chrg, ex->lpstrText, &ex->chrgText);
2234   }
2235   case EM_GETZOOM:
2236     if (!wParam || !lParam)
2237       return FALSE;
2238     *(int *)wParam = editor->nZoomNumerator;
2239     *(int *)lParam = editor->nZoomDenominator;
2240     return TRUE;
2241   case EM_SETZOOM:
2242     return ME_SetZoom(editor, wParam, lParam);
2243   case EM_CHARFROMPOS:
2244     return ME_CharFromPos(editor, ((POINTL *)lParam)->x, ((POINTL *)lParam)->y);
2245   case EM_POSFROMCHAR:
2246   {
2247     ME_DisplayItem *pRun;
2248     int nCharOfs, nOffset, nLength;
2249     POINTL pt = {0,0};
2250
2251     nCharOfs = wParam;
2252     /* detect which API version we're dealing with */
2253     if (wParam >= 0x40000)
2254         nCharOfs = lParam;
2255     nLength = ME_GetTextLength(editor);
2256
2257     if (nCharOfs < nLength) {
2258         ME_RunOfsFromCharOfs(editor, nCharOfs, &pRun, &nOffset);
2259         assert(pRun->type == diRun);
2260         pt.y = pRun->member.run.pt.y;
2261         pt.x = pRun->member.run.pt.x + ME_PointFromChar(editor, &pRun->member.run, nOffset);
2262         pt.y += ME_GetParagraph(pRun)->member.para.nYPos;
2263     } else {
2264         pt.x = 0;
2265         pt.y = editor->pBuffer->pLast->member.para.nYPos;
2266     }
2267     if (wParam >= 0x40000) {
2268         *(POINTL *)wParam = pt;
2269     }
2270     return MAKELONG( pt.x, pt.y );
2271   }
2272   case WM_CREATE:
2273     if (GetWindowLongW(hWnd, GWL_STYLE) & WS_HSCROLL)
2274     { /* Squelch the default horizontal scrollbar it would make */
2275       ShowScrollBar(editor->hWnd, SB_HORZ, FALSE);
2276     }
2277     ME_CommitUndo(editor);
2278     ME_WrapMarkedParagraphs(editor);
2279     ME_MoveCaret(editor);
2280     return 0;
2281   case WM_DESTROY:
2282     ME_DestroyEditor(editor);
2283     SetWindowLongPtrW(hWnd, 0, 0);
2284     return 0;
2285   case WM_LBUTTONDOWN:
2286     SetFocus(hWnd);
2287     ME_LButtonDown(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
2288     SetCapture(hWnd);
2289     ME_LinkNotify(editor,msg,wParam,lParam);
2290     break;
2291   case WM_MOUSEMOVE:
2292     if (GetCapture() == hWnd)
2293       ME_MouseMove(editor, (short)LOWORD(lParam), (short)HIWORD(lParam));
2294     ME_LinkNotify(editor,msg,wParam,lParam);
2295     break;
2296   case WM_LBUTTONUP:
2297     if (GetCapture() == hWnd)
2298       ReleaseCapture();
2299     ME_LinkNotify(editor,msg,wParam,lParam);
2300     break;
2301   case WM_LBUTTONDBLCLK:
2302     ME_LinkNotify(editor,msg,wParam,lParam);
2303     ME_SelectWord(editor);
2304     break;
2305   case WM_CONTEXTMENU:
2306     if (!ME_ShowContextMenu(editor, (short)LOWORD(lParam), (short)HIWORD(lParam)))
2307       goto do_default;
2308     break;
2309   case WM_PAINT:
2310     if (editor->bRedraw)
2311     {
2312       HDC hDC;
2313       PAINTSTRUCT ps;
2314
2315       hDC = BeginPaint(hWnd, &ps);
2316       ME_PaintContent(editor, hDC, FALSE, &ps.rcPaint);
2317       EndPaint(hWnd, &ps);
2318     }
2319     break;
2320   case WM_SETFOCUS:
2321     ME_ShowCaret(editor);
2322     ME_SendOldNotify(editor, EN_SETFOCUS);
2323     return 0;
2324   case WM_KILLFOCUS:
2325     ME_HideCaret(editor);
2326     ME_SendOldNotify(editor, EN_KILLFOCUS);
2327     return 0;
2328   case WM_ERASEBKGND:
2329   {
2330     if (editor->bRedraw)
2331     {
2332       HDC hDC = (HDC)wParam;
2333       RECT rc;
2334       if (GetUpdateRect(hWnd,&rc,TRUE))
2335       {
2336         FillRect(hDC, &rc, editor->hbrBackground);
2337       }
2338     }
2339     return 1;
2340   }
2341   case WM_COMMAND:
2342     TRACE("editor wnd command = %d\n", LOWORD(wParam));
2343     return 0;
2344   case WM_KEYDOWN:
2345     if (ME_KeyDown(editor, LOWORD(wParam)))
2346       return 0;
2347     goto do_default;
2348   case WM_CHAR:
2349   {
2350     WCHAR wstr = LOWORD(wParam);
2351     if (editor->AutoURLDetect_bEnable)
2352       ME_AutoURLDetect(editor, wstr);
2353
2354     switch (wstr)
2355     {
2356     case 1: /* Ctrl-A */
2357       ME_SetSelection(editor, 0, -1);
2358       return 0;
2359     case 3: /* Ctrl-C */
2360       SendMessageW(editor->hWnd, WM_COPY, 0, 0);
2361       return 0;
2362     }
2363
2364     if (GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_READONLY) {
2365       MessageBeep(MB_ICONERROR);
2366       return 0; /* FIXME really 0 ? */
2367     }
2368
2369     switch (wstr)
2370     {
2371     case 22: /* Ctrl-V */
2372       SendMessageW(editor->hWnd, WM_PASTE, 0, 0);
2373       return 0;
2374     case 24: /* Ctrl-X */
2375       SendMessageW(editor->hWnd, WM_CUT, 0, 0);
2376       return 0;
2377     case 25: /* Ctrl-Y */
2378       SendMessageW(editor->hWnd, EM_REDO, 0, 0);
2379       return 0;
2380     case 26: /* Ctrl-Z */
2381       SendMessageW(editor->hWnd, EM_UNDO, 0, 0);
2382       return 0;
2383     }
2384     if (((unsigned)wstr)>=' ' || wstr=='\r' || wstr=='\t') {
2385       /* FIXME maybe it would make sense to call EM_REPLACESEL instead ? */
2386       ME_Style *style = ME_GetInsertStyle(editor, 0);
2387       ME_SaveTempStyle(editor);
2388       ME_InsertTextFromCursor(editor, 0, &wstr, 1, style);
2389       ME_ReleaseStyle(style);
2390       ME_CommitUndo(editor);
2391       ME_UpdateRepaint(editor);
2392     }
2393     return 0;
2394   }
2395   case EM_SCROLL: /* fall through */
2396   case WM_VSCROLL:
2397   {
2398     int origNPos;
2399     int lineHeight;
2400
2401     origNPos = ME_GetYScrollPos(editor);
2402     lineHeight = 24;
2403
2404     if (editor && editor->pBuffer && editor->pBuffer->pDefaultStyle)
2405       lineHeight = editor->pBuffer->pDefaultStyle->tm.tmHeight;
2406     if (lineHeight <= 0) lineHeight = 24;
2407
2408     switch(LOWORD(wParam))
2409     {
2410       case SB_LINEUP:
2411         ME_ScrollUp(editor,lineHeight);
2412         break;
2413       case SB_LINEDOWN:
2414         ME_ScrollDown(editor,lineHeight);
2415         break;
2416       case SB_PAGEUP:
2417         ME_ScrollUp(editor,editor->sizeWindow.cy);
2418         break;
2419       case SB_PAGEDOWN:
2420         ME_ScrollDown(editor,editor->sizeWindow.cy);
2421         break;
2422       case SB_THUMBTRACK:
2423       case SB_THUMBPOSITION:
2424         ME_ScrollAbs(editor,HIWORD(wParam));
2425         break;
2426     }
2427     if (msg == EM_SCROLL)
2428       return 0x00010000 | (((ME_GetYScrollPos(editor) - origNPos)/lineHeight) & 0xffff);
2429     break;
2430   }
2431   case WM_MOUSEWHEEL:
2432   {
2433     int gcWheelDelta;
2434     UINT pulScrollLines;
2435
2436     SystemParametersInfoW(SPI_GETWHEELSCROLLLINES,0, &pulScrollLines, 0);
2437     gcWheelDelta = -GET_WHEEL_DELTA_WPARAM(wParam);
2438
2439     if (abs(gcWheelDelta) >= WHEEL_DELTA && pulScrollLines)
2440     {
2441       /* FIXME follow the original */
2442       ME_ScrollDown(editor,pulScrollLines * (gcWheelDelta / WHEEL_DELTA) * 8);
2443     }
2444     break;
2445   }
2446   case EM_GETRECT:
2447   {
2448     *((RECT *)lParam) = editor->rcFormat;
2449     return 0;
2450   }
2451   case EM_SETRECT:
2452   case EM_SETRECTNP:
2453   {
2454     if (lParam)
2455     {
2456       RECT *rc = (RECT *)lParam;
2457
2458       if (wParam)
2459       {
2460         editor->rcFormat.left += rc->left;
2461         editor->rcFormat.top += rc->top;
2462         editor->rcFormat.right += rc->right;
2463         editor->rcFormat.bottom += rc->bottom;
2464       }
2465       else
2466       {
2467         editor->rcFormat = *rc;
2468       }
2469     }
2470     else
2471     {
2472       GetClientRect(hWnd, &editor->rcFormat);
2473     }
2474     if (msg != EM_SETRECTNP)
2475       ME_RewrapRepaint(editor);
2476     return 0;
2477   }
2478   case EM_REQUESTRESIZE:
2479     ME_SendRequestResize(editor, TRUE);
2480     return 0;
2481   case WM_SETREDRAW:
2482     editor->bRedraw = wParam;
2483     return 0;
2484   case WM_SIZE:
2485   {
2486     GetClientRect(hWnd, &editor->rcFormat);
2487     ME_RewrapRepaint(editor);
2488     return DefWindowProcW(hWnd, msg, wParam, lParam);
2489   }
2490   case EM_GETOLEINTERFACE:
2491   {
2492     LPVOID *ppvObj = (LPVOID*) lParam;
2493     return CreateIRichEditOle(editor, ppvObj);
2494   }
2495   case EM_GETPASSWORDCHAR:
2496   {
2497     return editor->cPasswordMask;
2498   }
2499   case EM_SETOLECALLBACK:
2500     if(editor->lpOleCallback)
2501       IUnknown_Release(editor->lpOleCallback);
2502     editor->lpOleCallback = (LPRICHEDITOLECALLBACK)lParam;
2503     if(editor->lpOleCallback)
2504       IUnknown_AddRef(editor->lpOleCallback);
2505     return TRUE;
2506   case EM_GETWORDBREAKPROC:
2507     return (LRESULT)editor->pfnWordBreak;
2508   case EM_SETWORDBREAKPROC:
2509   {
2510     EDITWORDBREAKPROCW pfnOld = editor->pfnWordBreak;
2511
2512     editor->pfnWordBreak = (EDITWORDBREAKPROCW)lParam;
2513     return (LRESULT)pfnOld;
2514   }
2515   case EM_SETTEXTMODE:
2516   {
2517     LRESULT ret;
2518     int mask = 0;
2519     int changes = 0;
2520     if ((ret = RichEditANSIWndProc(hWnd, WM_GETTEXTLENGTH, 0, 0)) == 0)
2521     {
2522       /*Check for valid wParam*/
2523       if ((((wParam & TM_RICHTEXT) && ((wParam & TM_PLAINTEXT) << 1))) ||
2524           (((wParam & TM_MULTILEVELUNDO) && ((wParam & TM_SINGLELEVELUNDO) << 1))) ||
2525           (((wParam & TM_MULTICODEPAGE) && ((wParam & TM_SINGLECODEPAGE) << 1))))
2526         return 1;
2527       else
2528       {
2529         if (wParam & (TM_RICHTEXT | TM_PLAINTEXT))
2530         {
2531           mask |= (TM_RICHTEXT | TM_PLAINTEXT);
2532           changes |= (wParam & (TM_RICHTEXT | TM_PLAINTEXT));
2533         }
2534         /*FIXME: Currently no support for undo level and code page options*/
2535         editor->mode = (editor->mode & (~mask)) | changes;
2536         return 0;
2537       }
2538     }
2539     return ret;
2540   }
2541   case EM_SETPASSWORDCHAR:
2542   {
2543     editor->cPasswordMask = wParam;
2544     ME_RewrapRepaint(editor);
2545     return 0;
2546   }
2547   default:
2548   do_default:
2549     return DefWindowProcW(hWnd, msg, wParam, lParam);
2550   }
2551   return 0L;
2552 }
2553
2554
2555 /******************************************************************
2556  *        RichEdit10ANSIWndProc (RICHED20.9)
2557  */
2558 LRESULT WINAPI RichEdit10ANSIWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
2559 {
2560   LRESULT result;
2561
2562   /* FIXME: this is NOT the same as 2.0 version */
2563   result = RichEditANSIWndProc(hWnd, msg, wParam, lParam);
2564   if (msg == WM_NCCREATE)
2565   {
2566     ME_TextEditor *editor = (ME_TextEditor *)GetWindowLongPtrW(hWnd, 0);
2567
2568     editor->bEmulateVersion10 = TRUE;
2569     editor->pBuffer->pLast->member.para.nCharOfs = 2;
2570   }
2571   return result;
2572 }
2573
2574 void ME_SendOldNotify(ME_TextEditor *editor, int nCode)
2575 {
2576   HWND hWnd = editor->hWnd;
2577   SendMessageA(GetParent(hWnd), WM_COMMAND, (nCode<<16)|GetWindowLongW(hWnd, GWLP_ID), (LPARAM)hWnd);
2578 }
2579
2580 void ME_LinkNotify(ME_TextEditor *editor, UINT msg, WPARAM wParam, LPARAM lParam)
2581 {
2582   int x,y;
2583   ME_Cursor tmpCursor;
2584   ME_Run *tmpRun;
2585   BOOL bNothing;
2586   ENLINK info;
2587   x = (short)LOWORD(lParam);
2588   y = (short)HIWORD(lParam);
2589   ME_FindPixelPos(editor, x, y, &tmpCursor, &bNothing);
2590   tmpRun = &tmpCursor.pRun->member.run;
2591
2592   if ((tmpRun->style->fmt.dwMask & CFM_LINK)
2593     && (tmpRun->style->fmt.dwEffects & CFE_LINK))
2594   { /* The clicked run has CFE_LINK set */
2595     info.nmhdr.hwndFrom = editor->hWnd;
2596     info.nmhdr.idFrom = GetWindowLongW(editor->hWnd, GWLP_ID);
2597     info.nmhdr.code = EN_LINK;
2598     info.msg = msg;
2599     info.wParam = wParam;
2600     info.lParam = lParam;
2601     info.chrg.cpMin = ME_CharOfsFromRunOfs(editor,tmpCursor.pRun,0);
2602     info.chrg.cpMax = info.chrg.cpMin + ME_StrVLen(tmpRun->strText);
2603     SendMessageW(GetParent(editor->hWnd), WM_NOTIFY,info.nmhdr.idFrom, (LPARAM)&info);
2604   }
2605 }
2606
2607 int ME_CountParagraphsBetween(ME_TextEditor *editor, int from, int to)
2608 {
2609   ME_DisplayItem *item = ME_FindItemFwd(editor->pBuffer->pFirst, diParagraph);
2610   int i = 0;
2611
2612   while(item && item->member.para.next_para->member.para.nCharOfs <= from)
2613     item = item->member.para.next_para;
2614   if (!item)
2615     return 0;
2616   while(item && item->member.para.next_para->member.para.nCharOfs <= to) {
2617     item = item->member.para.next_para;
2618     i++;
2619   }
2620   return i;
2621 }
2622
2623
2624 int ME_GetTextW(ME_TextEditor *editor, WCHAR *buffer, int nStart, int nChars, int bCRLF)
2625 {
2626   ME_DisplayItem *item = ME_FindItemAtOffset(editor, diRun, nStart, &nStart);
2627   int nWritten = 0;
2628   WCHAR *pStart = buffer;
2629
2630   if (!item) {
2631     *buffer = L'\0';
2632     return 0;
2633   }
2634
2635   if (nStart)
2636   {
2637     int nLen = ME_StrLen(item->member.run.strText) - nStart;
2638     if (nLen > nChars)
2639       nLen = nChars;
2640     CopyMemory(buffer, item->member.run.strText->szData + nStart, sizeof(WCHAR)*nLen);
2641     nChars -= nLen;
2642     nWritten += nLen;
2643     if (!nChars)
2644       return nWritten;
2645     buffer += nLen;
2646     nStart = 0;
2647     item = ME_FindItemFwd(item, diRun);
2648   }
2649
2650   while(nChars && item)
2651   {
2652     int nLen = ME_StrLen(item->member.run.strText);
2653     if (nLen > nChars)
2654       nLen = nChars;
2655
2656     if (item->member.run.nFlags & MERF_ENDPARA)
2657     {
2658       if (!ME_FindItemFwd(item, diRun))
2659         /* No '\r' is appended to the last paragraph. */
2660         nLen = 0;
2661       else {
2662         *buffer = '\r';
2663         if (bCRLF)
2664         {
2665           *(++buffer) = '\n';
2666           nWritten++;
2667         }
2668         assert(nLen == 1);
2669         /* our end paragraph consists of 2 characters now */
2670         if (editor->bEmulateVersion10)
2671           nChars--;
2672       }
2673     }
2674     else
2675       CopyMemory(buffer, item->member.run.strText->szData, sizeof(WCHAR)*nLen);
2676     nChars -= nLen;
2677     nWritten += nLen;
2678     buffer += nLen;
2679
2680     if (!nChars)
2681     {
2682       TRACE("nWritten=%d, actual=%d\n", nWritten, buffer-pStart);
2683       *buffer = L'\0';
2684       return nWritten;
2685     }
2686     item = ME_FindItemFwd(item, diRun);
2687   }
2688   *buffer = L'\0';
2689   TRACE("nWritten=%d, actual=%d\n", nWritten, buffer-pStart);
2690   return nWritten;
2691 }
2692
2693 void ME_RegisterEditorClass(HINSTANCE hInstance)
2694 {
2695   BOOL bResult;
2696   WNDCLASSW wcW;
2697   WNDCLASSA wcA;
2698
2699   wcW.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
2700   wcW.lpfnWndProc = RichEditANSIWndProc;
2701   wcW.cbClsExtra = 0;
2702   wcW.cbWndExtra = sizeof(ME_TextEditor *);
2703   wcW.hInstance = NULL; /* hInstance would register DLL-local class */
2704   wcW.hIcon = NULL;
2705   wcW.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
2706   wcW.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
2707   wcW.lpszMenuName = NULL;
2708   wcW.lpszClassName = wszClassName;
2709   bResult = RegisterClassW(&wcW);
2710   assert(bResult);
2711   wcW.lpszClassName = wszClassName50;
2712   bResult = RegisterClassW(&wcW);
2713   assert(bResult);
2714
2715   wcA.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;
2716   wcA.lpfnWndProc = RichEditANSIWndProc;
2717   wcA.cbClsExtra = 0;
2718   wcA.cbWndExtra = sizeof(ME_TextEditor *);
2719   wcA.hInstance = NULL; /* hInstance would register DLL-local class */
2720   wcA.hIcon = NULL;
2721   wcA.hCursor = LoadCursorW(NULL, MAKEINTRESOURCEW(IDC_IBEAM));
2722   wcA.hbrBackground = (HBRUSH)GetStockObject(NULL_BRUSH);
2723   wcA.lpszMenuName = NULL;
2724   wcA.lpszClassName = "RichEdit20A";
2725   bResult = RegisterClassA(&wcA);
2726   assert(bResult);
2727   wcA.lpszClassName = "RichEdit50A";
2728   bResult = RegisterClassA(&wcA);
2729   assert(bResult);
2730 }
2731
2732 LRESULT WINAPI REComboWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
2733   /* FIXME: Not implemented */
2734   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
2735         hWnd, msg, get_msg_name(msg), wParam, lParam);
2736   return DefWindowProcW(hWnd, msg, wParam, lParam);
2737 }
2738
2739 LRESULT WINAPI REListWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam) {
2740   /* FIXME: Not implemented */
2741   TRACE("hWnd %p msg %04x (%s) %08x %08lx\n",
2742         hWnd, msg, get_msg_name(msg), wParam, lParam);
2743   return DefWindowProcW(hWnd, msg, wParam, lParam);
2744 }
2745
2746 /******************************************************************
2747  *        REExtendedRegisterClass (RICHED20.8)
2748  *
2749  * FIXME undocumented
2750  * Need to check for errors and implement controls and callbacks
2751  */
2752 LRESULT WINAPI REExtendedRegisterClass(void)
2753 {
2754   WNDCLASSW wcW;
2755   UINT result;
2756
2757   FIXME("semi stub\n");
2758
2759   wcW.cbClsExtra = 0;
2760   wcW.cbWndExtra = 4;
2761   wcW.hInstance = NULL;
2762   wcW.hIcon = NULL;
2763   wcW.hCursor = NULL;
2764   wcW.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
2765   wcW.lpszMenuName = NULL;
2766
2767   if (!ME_ListBoxRegistered)
2768   {
2769       wcW.style = CS_PARENTDC | CS_DBLCLKS | CS_GLOBALCLASS;
2770       wcW.lpfnWndProc = REListWndProc;
2771       wcW.lpszClassName = wszClassNameListBox;
2772       if (RegisterClassW(&wcW)) ME_ListBoxRegistered = TRUE;
2773   }
2774
2775   if (!ME_ComboBoxRegistered)
2776   {
2777       wcW.style = CS_PARENTDC | CS_DBLCLKS | CS_GLOBALCLASS | CS_VREDRAW | CS_HREDRAW;
2778       wcW.lpfnWndProc = REComboWndProc;
2779       wcW.lpszClassName = wszClassNameComboBox;
2780       if (RegisterClassW(&wcW)) ME_ComboBoxRegistered = TRUE;
2781   }
2782
2783   result = 0;
2784   if (ME_ListBoxRegistered)
2785       result += 1;
2786   if (ME_ComboBoxRegistered)
2787       result += 2;
2788
2789   return result;
2790 }
2791
2792 int ME_AutoURLDetect(ME_TextEditor *editor, WCHAR curChar)
2793 {
2794   struct prefix_s {
2795     const char *text;
2796     int length;
2797   } prefixes[12] = {
2798     {"http:", 5},
2799     {"file:", 6},
2800     {"mailto:", 8},
2801     {"ftp:", 5},
2802     {"https:", 7},
2803     {"gopher:", 8},
2804     {"nntp:", 6},
2805     {"prospero:", 10},
2806     {"telnet:", 8},
2807     {"news:", 6},
2808     {"wais:", 6},
2809     {"www.", 5}
2810   };
2811   CHARRANGE ins_pt;
2812   int curf_ef, link_ef, def_ef;
2813   int cur_prefx, prefx_cnt;
2814   int sel_min, sel_max;
2815   int car_pos = 0;
2816   int text_pos=-1;
2817   int URLmin, URLmax = 0;
2818   CHARRANGE url;
2819   FINDTEXTA ft;
2820   CHARFORMAT2W cur_format;
2821   CHARFORMAT2W default_format;
2822   CHARFORMAT2W link;
2823   RichEditANSIWndProc(editor->hWnd, EM_EXGETSEL, (WPARAM) 0, (LPARAM) &ins_pt);
2824   sel_min = ins_pt.cpMin;
2825   sel_max = ins_pt.cpMax;
2826   if (sel_min==sel_max)
2827     car_pos = sel_min;
2828   if (sel_min!=sel_max)
2829     car_pos = ME_GetTextLength(editor)+1;
2830   cur_format.cbSize = sizeof(cur_format);
2831   default_format.cbSize = sizeof(default_format);
2832   RichEditANSIWndProc(editor->hWnd, EM_GETCHARFORMAT, SCF_SELECTION, (LPARAM) &cur_format);
2833   RichEditANSIWndProc(editor->hWnd, EM_GETCHARFORMAT, SCF_DEFAULT, (LPARAM) &default_format);
2834   link.cbSize = sizeof(link);
2835   link.dwMask = CFM_LINK;
2836   link.dwEffects = CFE_LINK;
2837   curf_ef = cur_format.dwEffects & link.dwEffects;
2838   def_ef = default_format.dwEffects & link.dwEffects;
2839   link_ef = link.dwEffects & link.dwEffects;
2840   if (curf_ef == link_ef)
2841   {
2842     if( curChar == '\n' || curChar=='\r' || curChar==' ')
2843     {
2844       ME_SetSelection(editor, car_pos, car_pos);
2845       RichEditANSIWndProc(editor->hWnd, EM_SETCHARFORMAT, SCF_SELECTION, (LPARAM) &default_format);
2846       text_pos=-1;
2847       return 0;
2848     }
2849   }
2850   if (curf_ef == def_ef)
2851   {
2852     cur_prefx = 0;
2853     prefx_cnt = (sizeof(prefixes)/sizeof(struct prefix_s))-1;
2854     while (cur_prefx<=prefx_cnt)
2855     {
2856       if (text_pos == -1)
2857       {
2858         ft.lpstrText = prefixes[cur_prefx].text;
2859         URLmin=max(0,(car_pos-prefixes[cur_prefx].length));
2860         URLmax=max(0, car_pos);
2861         if ((car_pos == 0) && (ME_GetTextLength(editor) != 0))
2862         {
2863         URLmax = ME_GetTextLength(editor)+1;
2864         }
2865         ft.chrg.cpMin = URLmin;
2866         ft.chrg.cpMax = URLmax;
2867         text_pos=RichEditANSIWndProc(editor->hWnd, EM_FINDTEXT, FR_DOWN, (LPARAM)&ft);
2868         cur_prefx++;
2869       }
2870       if (text_pos != -1)
2871       {
2872         url.cpMin=text_pos;
2873         url.cpMax=car_pos-1;
2874         ME_SetCharFormat(editor, text_pos, (URLmax-text_pos), &link);
2875         ME_RewrapRepaint(editor);
2876         break;
2877       }
2878     }
2879   }
2880   return 0;
2881 }