dlls/riched20/caret.c

   1 /*
   2  * RichEdit - Caret and selection functions.
   3  *
   4  * Copyright 2004 by Krzysztof Foltman
   5  * Copyright 2005 by Phil Krylov
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22
  23 #include "editor.h"
  24
  25 WINE_DEFAULT_DEBUG_CHANNEL(richedit);
  26
  27 static BOOL
  28 ME_MoveCursorChars(ME_TextEditor *editor, ME_Cursor *pCursor, int nRelOfs);
  29
  30
  31 void ME_GetSelection(ME_TextEditor *editor, int *from, int *to)
  32 {
  33   *from = ME_GetCursorOfs(editor, 0);
  34   *to =   ME_GetCursorOfs(editor, 1);
  35
  36   if (*from > *to)
  37   {
  38     int tmp = *from;
  39     *from = *to;
  40     *to = tmp;
  41   }
  42 }
  43
  44 int ME_GetTextLength(ME_TextEditor *editor)
  45 {
  46   return ME_CharOfsFromRunOfs(editor, ME_FindItemBack(editor->pBuffer->pLast, diRun), 0);
  47 }
  48
  49
  50 int ME_GetTextLengthEx(ME_TextEditor *editor, const GETTEXTLENGTHEX *how)
  51 {
  52   int length;
  53
  54   if (how->flags & GTL_PRECISE && how->flags & GTL_CLOSE)
  55     return E_INVALIDARG;
  56   if (how->flags & GTL_NUMCHARS && how->flags & GTL_NUMBYTES)
  57     return E_INVALIDARG;
  58
  59   length = ME_GetTextLength(editor);
  60
  61   if ((GetWindowLongW(editor->hWnd, GWL_STYLE) & ES_MULTILINE) && (how->flags & GTL_USECRLF))
  62     length += editor->nParagraphs;
  63
  64   if (how->flags & GTL_NUMBYTES)
  65   {
  66     CPINFO cpinfo;
  67
  68     if (how->codepage == 1200)
  69       return length * 2;
  70     if (how->flags & GTL_PRECISE)
  71       FIXME("GTL_PRECISE flag unsupported. Using GTL_CLOSE\n");
  72     if (GetCPInfo(how->codepage, &cpinfo))
  73       return length * cpinfo.MaxCharSize;
  74     ERR("Invalid codepage %u\n", how->codepage);
  75     return E_INVALIDARG;
  76   }
  77   return length;
  78 }
  79
  80
  81 int ME_SetSelection(ME_TextEditor *editor, int from, int to)
  82 {
  83   int selectionEnd = 0;
  84   const int len = ME_GetTextLength(editor);
  85
  86   /* all negative values are effectively the same */
  87   if (from < 0)
  88     from = -1;
  89   if (to < 0)
  90     to = -1;
  91
  92   /* select all */
  93   if (from == 0 && to == -1)
  94   {
  95     editor->pCursors[1].pRun = ME_FindItemFwd(editor->pBuffer->pFirst, diRun);
  96     editor->pCursors[1].nOffset = 0;
  97     editor->pCursors[0].pRun = ME_FindItemBack(editor->pBuffer->pLast, diRun);
  98     editor->pCursors[0].nOffset = 0;
  99     ME_InvalidateSelection(editor);
 100     ME_ClearTempStyle(editor);
 101     return len + 1;
 102   }
 103
 104   /* if both values are equal and also out of bound, that means to */
 105   /* put the selection at the end of the text */
 106   if ((from == to) && (to < 0 || to > len))
 107   {
 108     selectionEnd = 1;
 109   }
 110   else
 111   {
 112     /* if from is negative and to is positive then selection is */
 113     /* deselected and caret moved to end of the current selection */
 114     if (from < 0)
 115     {
 116       int start, end;
 117       ME_GetSelection(editor, &start, &end);
 118       editor->pCursors[1] = editor->pCursors[0];
 119       ME_Repaint(editor);
 120       ME_ClearTempStyle(editor);
 121       return end;
 122     }
 123
 124     /* adjust to if it's a negative value */
 125     if (to < 0)
 126       to = len + 1;
 127
 128     /* flip from and to if they are reversed */
 129     if (from>to)
 130     {
 131       int tmp = from;
 132       from = to;
 133       to = tmp;
 134     }
 135
 136     /* after fiddling with the values, we find from > len && to > len */
 137     if (from > len)
 138       selectionEnd = 1;
 139     /* special case with to too big */
 140     else if (to > len)
 141       to = len + 1;
 142   }
 143
 144   if (selectionEnd)
 145   {
 146     editor->pCursors[1].pRun = editor->pCursors[0].pRun = ME_FindItemBack(editor->pBuffer->pLast, diRun);
 147     editor->pCursors[1].nOffset = editor->pCursors[0].nOffset = 0;
 148     ME_InvalidateSelection(editor);
 149     ME_ClearTempStyle(editor);
 150     return len;
 151   }
 152
 153   ME_RunOfsFromCharOfs(editor, from, &editor->pCursors[1].pRun, &editor->pCursors[1].nOffset);
 154   ME_RunOfsFromCharOfs(editor, to, &editor->pCursors[0].pRun, &editor->pCursors[0].nOffset);
 155   return to;
 156 }
 157
 158
 159 void
 160 ME_GetCursorCoordinates(ME_TextEditor *editor, ME_Cursor *pCursor,
 161                         int *x, int *y, int *height)
 162 {
 163   ME_DisplayItem *pCursorRun = pCursor->pRun;
 164   ME_DisplayItem *pSizeRun = pCursor->pRun;
 165
 166   assert(!pCursor->nOffset || !editor->bCaretAtEnd);
 167   assert(height && x && y);
 168   assert(!(ME_GetParagraph(pCursorRun)->member.para.nFlags & MEPF_REWRAP));
 169   assert(pCursor->pRun);
 170   assert(pCursor->pRun->type == diRun);
 171
 172   if (pCursorRun->type == diRun) {
 173     ME_DisplayItem *row = ME_FindItemBack(pCursorRun, diStartRowOrParagraph);
 174
 175     if (row) {
 176       HDC hDC = GetDC(editor->hWnd);
 177       ME_Context c;
 178       ME_DisplayItem *run = pCursorRun;
 179       ME_DisplayItem *para = NULL;
 180       SIZE sz = {0, 0};
 181
 182       ME_InitContext(&c, editor, hDC);
 183
 184       if (!pCursor->nOffset && !editor->bCaretAtEnd)
 185       {
 186         ME_DisplayItem *prev = ME_FindItemBack(pCursorRun, diRunOrStartRow);
 187         assert(prev);
 188         if (prev->type == diRun)
 189           pSizeRun = prev;
 190       }
 191       assert(row->type == diStartRow); /* paragraph -> run without start row ?*/
 192       para = ME_FindItemBack(row, diParagraph);
 193       assert(para);
 194       assert(para->type == diParagraph);
 195       if (editor->bCaretAtEnd && !pCursor->nOffset &&
 196           run == ME_FindItemFwd(row, diRun))
 197       {
 198         ME_DisplayItem *tmp = ME_FindItemBack(row, diRunOrParagraph);
 199         assert(tmp);
 200         if (tmp->type == diRun)
 201         {
 202           row = ME_FindItemBack(tmp, diStartRow);
 203           pSizeRun = run = tmp;
 204           assert(run);
 205           assert(run->type == diRun);
 206           sz = ME_GetRunSize(&c, &para->member.para, &run->member.run, ME_StrLen(run->member.run.strText));
 207         }
 208       }
 209       if (pCursor->nOffset && !(run->member.run.nFlags & MERF_SKIPPED)) {
 210         sz = ME_GetRunSize(&c, &para->member.para, &run->member.run, pCursor->nOffset);
 211       }
 212
 213       *height = pSizeRun->member.run.nAscent + pSizeRun->member.run.nDescent;
 214       *x = run->member.run.pt.x + sz.cx;
 215       *y = para->member.para.nYPos + row->member.row.nBaseline + pSizeRun->member.run.pt.y - pSizeRun->member.run.nAscent - ME_GetYScrollPos(editor);
 216
 217       ME_DestroyContext(&c);
 218       ReleaseDC(editor->hWnd, hDC);
 219       return;
 220     }
 221   }
 222   *height = 10; /* FIXME use global font */
 223   *x = 0;
 224   *y = 0;
 225 }
 226
 227
 228 void
 229 ME_MoveCaret(ME_TextEditor *editor)
 230 {
 231   int x, y, height;
 232
 233   if (ME_WrapMarkedParagraphs(editor))
 234     ME_UpdateScrollBar(editor);
 235   ME_GetCursorCoordinates(editor, &editor->pCursors[0], &x, &y, &height);
 236   if(editor->bHaveFocus)
 237   {
 238     CreateCaret(editor->hWnd, NULL, 0, height);
 239     SetCaretPos(x, y);
 240   }
 241 }
 242
 243
 244 void ME_ShowCaret(ME_TextEditor *ed)
 245 {
 246   ME_MoveCaret(ed);
 247   if(ed->bHaveFocus)
 248     ShowCaret(ed->hWnd);
 249 }
 250
 251 void ME_HideCaret(ME_TextEditor *ed)
 252 {
 253   if(ed->bHaveFocus)
 254   {
 255     HideCaret(ed->hWnd);
 256     DestroyCaret();
 257   }
 258 }
 259
 260 void ME_InternalDeleteText(ME_TextEditor *editor, int nOfs,
 261   int nChars)
 262 {
 263   ME_Cursor c;
 264   int shift = 0;
 265
 266   while(nChars > 0)
 267   {
 268     ME_Run *run;
 269     ME_CursorFromCharOfs(editor, nOfs, &c);
 270     run = &c.pRun->member.run;
 271     if (run->nFlags & MERF_ENDPARA) {
 272       if (!ME_FindItemFwd(c.pRun, diParagraph))
 273       {
 274         return;
 275       }
 276       ME_JoinParagraphs(editor, ME_GetParagraph(c.pRun));
 277       /* ME_SkipAndPropagateCharOffset(p->pRun, shift); */
 278       ME_CheckCharOffsets(editor);
 279       nChars--;
 280       if (editor->bEmulateVersion10 && nChars)
 281         nChars--;
 282       continue;
 283     }
 284     else
 285     {
 286       ME_Cursor cursor;
 287       int nIntendedChars = nChars;
 288       int nCharsToDelete = nChars;
 289       int i;
 290       int loc = c.nOffset;
 291
 292       ME_FindItemBack(c.pRun, diParagraph)->member.para.nFlags |= MEPF_REWRAP;
 293
 294       cursor = c;
 295       ME_StrRelPos(run->strText, loc, &nChars);
 296       /* nChars is the number of characters that should be deleted from the
 297          FOLLOWING runs (these AFTER cursor.pRun)
 298          nCharsToDelete is a number of chars to delete from THIS run */
 299       nCharsToDelete -= nChars;
 300       shift -= nCharsToDelete;
 301       TRACE("Deleting %d (intended %d-remaning %d) chars at %d in '%s' (%d)\n",
 302         nCharsToDelete, nIntendedChars, nChars, c.nOffset,
 303         debugstr_w(run->strText->szData), run->strText->nLen);
 304
 305       if (!c.nOffset && ME_StrVLen(run->strText) == nCharsToDelete)
 306       {
 307         /* undo = reinsert whole run */
 308         /* nOfs is a character offset (from the start of the document
 309            to the current (deleted) run */
 310         ME_UndoItem *pUndo = ME_AddUndoItem(editor, diUndoInsertRun, c.pRun);
 311         if (pUndo)
 312           pUndo->di.member.run.nCharOfs = nOfs;
 313       }
 314       else
 315       {
 316         /* undo = reinsert partial run */
 317         ME_UndoItem *pUndo = ME_AddUndoItem(editor, diUndoInsertRun, c.pRun);
 318         if (pUndo) {
 319           ME_DestroyString(pUndo->di.member.run.strText);
 320           pUndo->di.member.run.nCharOfs = nOfs;
 321           pUndo->di.member.run.strText = ME_MakeStringN(run->strText->szData+c.nOffset, nCharsToDelete);
 322         }
 323       }
 324       TRACE("Post deletion string: %s (%d)\n", debugstr_w(run->strText->szData), run->strText->nLen);
 325       TRACE("Shift value: %d\n", shift);
 326       ME_StrDeleteV(run->strText, c.nOffset, nCharsToDelete);
 327
 328       /* update cursors (including c) */
 329       for (i=-1; i<editor->nCursors; i++) {
 330         ME_Cursor *pThisCur = editor->pCursors + i;
 331         if (i == -1) pThisCur = &c;
 332         if (pThisCur->pRun == cursor.pRun) {
 333           if (pThisCur->nOffset > cursor.nOffset) {
 334             if (pThisCur->nOffset-cursor.nOffset < nCharsToDelete)
 335               pThisCur->nOffset = cursor.nOffset;
 336             else
 337               pThisCur->nOffset -= nCharsToDelete;
 338             assert(pThisCur->nOffset >= 0);
 339             assert(pThisCur->nOffset <= ME_StrVLen(run->strText));
 340           }
 341           if (pThisCur->nOffset == ME_StrVLen(run->strText))
 342           {
 343             pThisCur->pRun = ME_FindItemFwd(pThisCur->pRun, diRunOrParagraphOrEnd);
 344             assert(pThisCur->pRun->type == diRun);
 345             pThisCur->nOffset = 0;
 346           }
 347         }
 348       }
 349
 350       /* c = updated data now */
 351
 352       if (c.pRun == cursor.pRun)
 353         ME_SkipAndPropagateCharOffset(c.pRun, shift);
 354       else
 355         ME_PropagateCharOffset(c.pRun, shift);
 356
 357       if (!ME_StrVLen(cursor.pRun->member.run.strText))
 358       {
 359         TRACE("Removing useless run\n");
 360         ME_Remove(cursor.pRun);
 361         ME_DestroyDisplayItem(cursor.pRun);
 362       }
 363
 364       shift = 0;
 365       /*
 366       ME_CheckCharOffsets(editor);
 367       */
 368       continue;
 369     }
 370   }
 371 }
 372
 373 void ME_DeleteTextAtCursor(ME_TextEditor *editor, int nCursor,
 374   int nChars)
 375 {
 376   assert(nCursor>=0 && nCursor<editor->nCursors);
 377   /* text operations set modified state */
 378   editor->nModifyStep = 1;
 379   ME_InternalDeleteText(editor, ME_GetCursorOfs(editor, nCursor), nChars);
 380 }
 381
 382 static ME_DisplayItem *
 383 ME_InternalInsertTextFromCursor(ME_TextEditor *editor, int nCursor,
 384                                 const WCHAR *str, int len, ME_Style *style,
 385                                 int flags)
 386 {
 387   ME_Cursor *p = &editor->pCursors[nCursor];
 388
 389   editor->bCaretAtEnd = FALSE;
 390
 391   assert(p->pRun->type == diRun);
 392
 393   return ME_InsertRunAtCursor(editor, p, style, str, len, flags);
 394 }
 395
 396
 397 /* FIXME this is temporary, just to have something to test how bad graphics handler is */
 398 void ME_InsertGraphicsFromCursor(ME_TextEditor *editor, int nCursor)
 399 {
 400   ME_Style *pStyle = ME_GetInsertStyle(editor, nCursor);
 401   WCHAR space = ' ';
 402
 403   /* FIXME no no no */
 404   if (ME_IsSelection(editor))
 405     ME_DeleteSelection(editor);
 406
 407   ME_InternalInsertTextFromCursor(editor, nCursor, &space, 1, pStyle,
 408                                   MERF_GRAPHICS);
 409   ME_SendSelChange(editor);
 410 }
 411
 412
 413 void
 414 ME_InsertTableCellFromCursor(ME_TextEditor *editor, int nCursor)
 415 {
 416   WCHAR tab = '\t';
 417   ME_DisplayItem *p, *run;
 418   ME_Style *pStyle = ME_GetInsertStyle(editor, nCursor);
 419
 420   p = ME_InternalInsertTextFromCursor(editor, nCursor, &tab, 1, pStyle,
 421                                       MERF_CELL);
 422   run = p;
 423   while ((run = ME_FindItemBack(run, diRunOrParagraph))->type == diRun)
 424   {
 425     if (run->member.run.nFlags & MERF_CELL)
 426     {
 427       assert(run->member.run.pCell->next);
 428       p->member.run.pCell = run->member.run.pCell->next;
 429       return;
 430     }
 431   }
 432   assert(run->type == diParagraph);
 433   assert(run->member.para.bTable);
 434   assert(run->member.para.pCells);
 435   p->member.run.pCell = run->member.para.pCells;
 436 }
 437
 438
 439 void ME_InsertTextFromCursor(ME_TextEditor *editor, int nCursor,
 440   const WCHAR *str, int len, ME_Style *style)
 441 {
 442   const WCHAR *pos;
 443   ME_Cursor *p = NULL;
 444   int oldLen;
 445
 446   /* FIXME really HERE ? */
 447   if (ME_IsSelection(editor))
 448     ME_DeleteSelection(editor);
 449
 450   /* FIXME: is this too slow? */
 451   /* Didn't affect performance for WM_SETTEXT (around 50sec/30K) */
 452   oldLen = ME_GetTextLength(editor);
 453
 454   /* text operations set modified state */
 455   editor->nModifyStep = 1;
 456
 457   assert(style);
 458
 459   assert(nCursor>=0 && nCursor<editor->nCursors);
 460   if (len == -1)
 461     len = lstrlenW(str);
 462
 463   /* grow the text limit to fit our text */
 464   if(editor->nTextLimit < oldLen +len)
 465     editor->nTextLimit = oldLen + len;
 466
 467   while (len)
 468   {
 469     pos = str;
 470     /* FIXME this sucks - no respect for unicode (what else can be a line separator in unicode?) */
 471     while(pos-str < len && *pos != '\r' && *pos != '\n' && *pos != '\t')
 472       pos++;
 473     if (pos-str < len && *pos == '\t') { /* handle tabs */
 474       WCHAR tab = '\t';
 475
 476       if (pos!=str)
 477         ME_InternalInsertTextFromCursor(editor, nCursor, str, pos-str, style, 0);
 478
 479       ME_InternalInsertTextFromCursor(editor, nCursor, &tab, 1, style, MERF_TAB);
 480
 481       pos++;
 482       if(pos-str <= len) {
 483         len -= pos - str;
 484         str = pos;
 485         continue;
 486       }
 487     }
 488     if (pos-str < len) {   /* handle EOLs */
 489       ME_DisplayItem *tp, *end_run;
 490       ME_Style *tmp_style;
 491       if (pos!=str)
 492         ME_InternalInsertTextFromCursor(editor, nCursor, str, pos-str, style, 0);
 493       p = &editor->pCursors[nCursor];
 494       if (p->nOffset) {
 495         ME_SplitRunSimple(editor, p->pRun, p->nOffset);
 496         p = &editor->pCursors[nCursor];
 497       }
 498       tmp_style = ME_GetInsertStyle(editor, nCursor);
 499       /* ME_SplitParagraph increases style refcount */
 500       tp = ME_SplitParagraph(editor, p->pRun, p->pRun->member.run.style);
 501       p->pRun = ME_FindItemFwd(tp, diRun);
 502       end_run = ME_FindItemBack(tp, diRun);
 503       ME_ReleaseStyle(end_run->member.run.style);
 504       end_run->member.run.style = tmp_style;
 505       p->nOffset = 0;
 506       if(pos-str < len && *pos =='\r')
 507         pos++;
 508       if(pos-str < len && *pos =='\n')
 509         pos++;
 510       if(pos-str <= len) {
 511         len -= pos - str;
 512         str = pos;
 513         continue;
 514       }
 515     }
 516     ME_InternalInsertTextFromCursor(editor, nCursor, str, len, style, 0);
 517     len = 0;
 518   }
 519 }
 520
 521
 522 static BOOL
 523 ME_MoveCursorChars(ME_TextEditor *editor, ME_Cursor *pCursor, int nRelOfs)
 524 {
 525   ME_DisplayItem *pRun = pCursor->pRun;
 526
 527   if (nRelOfs == -1)
 528   {
 529     if (!pCursor->nOffset)
 530     {
 531       do {
 532         pRun = ME_FindItemBack(pRun, diRunOrParagraph);
 533         assert(pRun);
 534         switch (pRun->type)
 535         {
 536           case diRun:
 537             break;
 538           case diParagraph:
 539             if (pRun->member.para.prev_para->type == diTextStart)
 540               return FALSE;
 541             pRun = ME_FindItemBack(pRun, diRunOrParagraph);
 542             /* every paragraph ought to have at least one run */
 543             assert(pRun && pRun->type == diRun);
 544             assert(pRun->member.run.nFlags & MERF_ENDPARA);
 545             break;
 546           default:
 547             assert(pRun->type != diRun && pRun->type != diParagraph);
 548             return FALSE;
 549         }
 550       } while (RUN_IS_HIDDEN(&pRun->member.run));
 551       pCursor->pRun = pRun;
 552       if (pRun->member.run.nFlags & MERF_ENDPARA)
 553         pCursor->nOffset = 0;
 554       else
 555         pCursor->nOffset = pRun->member.run.strText->nLen;
 556     }
 557
 558     if (pCursor->nOffset)
 559       pCursor->nOffset = ME_StrRelPos2(pCursor->pRun->member.run.strText, pCursor->nOffset, nRelOfs);
 560     return TRUE;
 561   }
 562   else
 563   {
 564     if (!(pRun->member.run.nFlags & MERF_ENDPARA))
 565     {
 566       int new_ofs = ME_StrRelPos2(pRun->member.run.strText, pCursor->nOffset, nRelOfs);
 567
 568       if (new_ofs < pRun->member.run.strText->nLen)
 569       {
 570         pCursor->nOffset = new_ofs;
 571         return TRUE;
 572       }
 573     }
 574     do {
 575       pRun = ME_FindItemFwd(pRun, diRun);
 576     } while (pRun && RUN_IS_HIDDEN(&pRun->member.run));
 577     if (pRun)
 578     {
 579       pCursor->pRun = pRun;
 580       pCursor->nOffset = 0;
 581       return TRUE;
 582     }
 583   }
 584   return FALSE;
 585 }
 586
 587
 588 static BOOL
 589 ME_MoveCursorWords(ME_TextEditor *editor, ME_Cursor *cursor, int nRelOfs)
 590 {
 591   ME_DisplayItem *pRun = cursor->pRun, *pOtherRun;
 592   int nOffset = cursor->nOffset;
 593
 594   if (nRelOfs == -1)
 595   {
 596     /* Backward movement */
 597     while (TRUE)
 598     {
 599       nOffset = ME_CallWordBreakProc(editor, pRun->member.run.strText,
 600                                      nOffset, WB_MOVEWORDLEFT);
 601        if (nOffset)
 602         break;
 603       pOtherRun = ME_FindItemBack(pRun, diRunOrParagraph);
 604       if (pOtherRun->type == diRun)
 605       {
 606         if (ME_CallWordBreakProc(editor, pOtherRun->member.run.strText,
 607                                  pOtherRun->member.run.strText->nLen - 1,
 608                                  WB_ISDELIMITER)
 609             && !(pRun->member.run.nFlags & MERF_ENDPARA)
 610             && !(cursor->pRun == pRun && cursor->nOffset == 0)
 611             && !ME_CallWordBreakProc(editor, pRun->member.run.strText, 0,
 612                                      WB_ISDELIMITER))
 613           break;
 614         pRun = pOtherRun;
 615         nOffset = pOtherRun->member.run.strText->nLen;
 616       }
 617       else if (pOtherRun->type == diParagraph)
 618       {
 619         if (cursor->pRun == pRun && cursor->nOffset == 0)
 620         {
 621           /* Paragraph breaks are treated as separate words */
 622           if (pOtherRun->member.para.prev_para->type == diTextStart)
 623             return FALSE;
 624           pRun = ME_FindItemBack(pOtherRun, diRunOrParagraph);
 625         }
 626         break;
 627       }
 628     }
 629   }
 630   else
 631   {
 632     /* Forward movement */
 633     BOOL last_delim = FALSE;
 634
 635     while (TRUE)
 636     {
 637       if (last_delim && !ME_CallWordBreakProc(editor, pRun->member.run.strText,
 638                                               nOffset, WB_ISDELIMITER))
 639         break;
 640       nOffset = ME_CallWordBreakProc(editor, pRun->member.run.strText,
 641                                      nOffset, WB_MOVEWORDRIGHT);
 642       if (nOffset < pRun->member.run.strText->nLen)
 643         break;
 644       pOtherRun = ME_FindItemFwd(pRun, diRunOrParagraphOrEnd);
 645       if (pOtherRun->type == diRun)
 646       {
 647         last_delim = ME_CallWordBreakProc(editor, pRun->member.run.strText,
 648                                           nOffset - 1, WB_ISDELIMITER);
 649         pRun = pOtherRun;
 650         nOffset = 0;
 651       }
 652       else if (pOtherRun->type == diParagraph)
 653       {
 654         if (cursor->pRun == pRun)
 655           pRun = ME_FindItemFwd(pOtherRun, diRun);
 656         nOffset = 0;
 657         break;
 658       }
 659       else /* diTextEnd */
 660       {
 661         if (cursor->pRun == pRun)
 662           return FALSE;
 663         nOffset = 0;
 664         break;
 665       }
 666     }
 667   }
 668   cursor->pRun = pRun;
 669   cursor->nOffset = nOffset;
 670   return TRUE;
 671 }
 672
 673
 674 void
 675 ME_SelectWord(ME_TextEditor *editor)
 676 {
 677   if (!(editor->pCursors[0].pRun->member.run.nFlags & MERF_ENDPARA))
 678     ME_MoveCursorWords(editor, &editor->pCursors[0], -1);
 679   ME_MoveCursorWords(editor, &editor->pCursors[1], +1);
 680   ME_InvalidateSelection(editor);
 681   ME_SendSelChange(editor);
 682 }
 683
 684
 685 int ME_GetCursorOfs(ME_TextEditor *editor, int nCursor)
 686 {
 687   ME_Cursor *pCursor = &editor->pCursors[nCursor];
 688
 689   return ME_GetParagraph(pCursor->pRun)->member.para.nCharOfs
 690     + pCursor->pRun->member.run.nCharOfs + pCursor->nOffset;
 691 }
 692
 693 int ME_FindPixelPos(ME_TextEditor *editor, int x, int y, ME_Cursor *result, BOOL *is_eol)
 694 {
 695   ME_DisplayItem *p = editor->pBuffer->pFirst->member.para.next_para;
 696   int rx = 0;
 697
 698   if (is_eol)
 699     *is_eol = 0;
 700
 701   while(p != editor->pBuffer->pLast)
 702   {
 703     if (p->type == diParagraph)
 704     {
 705       int ry = y - p->member.para.nYPos;
 706       if (ry < 0)
 707       {
 708         result->pRun = ME_FindItemFwd(p, diRun);
 709         result->nOffset = 0;
 710         return 0;
 711       }
 712       if (ry >= p->member.para.nHeight)
 713       {
 714         p = p->member.para.next_para;
 715         continue;
 716       }
 717       p = ME_FindItemFwd(p, diStartRow);
 718       y = ry;
 719       continue;
 720     }
 721     if (p->type == diStartRow)
 722     {
 723       int ry = y - p->member.row.nYPos;
 724       if (ry < 0)
 725         return 0;
 726       if (ry >= p->member.row.nHeight)
 727       {
 728         p = ME_FindItemFwd(p, diStartRowOrParagraphOrEnd);
 729         if (p->type != diStartRow)
 730           return 0;
 731         continue;
 732       }
 733       p = ME_FindItemFwd(p, diRun);
 734       continue;
 735     }
 736     if (p->type == diRun)
 737     {
 738       ME_DisplayItem *pp;
 739       rx = x - p->member.run.pt.x;
 740       if (rx < 0)
 741         rx = 0;
 742       if (rx >= p->member.run.nWidth) /* not this run yet... find next item */
 743       {
 744         pp = p;
 745         do {
 746           p = p->next;
 747           if (p->type == diRun)
 748           {
 749             rx = x - p->member.run.pt.x;
 750             goto continue_search;
 751           }
 752           if (p->type == diStartRow)
 753           {
 754             p = ME_FindItemFwd(p, diRun);
 755             if (is_eol)
 756               *is_eol = 1;
 757             rx = 0; /* FIXME not sure */
 758             goto found_here;
 759           }
 760           if (p->type == diParagraph || p->type == diTextEnd)
 761           {
 762             rx = 0; /* FIXME not sure */
 763             p = pp;
 764             goto found_here;
 765           }
 766         } while(1);
 767         continue;
 768       }
 769     found_here:
 770       if (p->member.run.nFlags & MERF_ENDPARA)
 771         rx = 0;
 772       result->pRun = p;
 773       result->nOffset = ME_CharFromPointCursor(editor, rx, &p->member.run);
 774       if (editor->pCursors[0].nOffset == p->member.run.strText->nLen && rx)
 775       {
 776         result->pRun = ME_FindItemFwd(editor->pCursors[0].pRun, diRun);
 777         result->nOffset = 0;
 778       }
 779       return 1;
 780     }
 781     assert(0);
 782   continue_search:
 783     ;
 784   }
 785   result->pRun = ME_FindItemBack(p, diRun);
 786   result->nOffset = 0;
 787   assert(result->pRun->member.run.nFlags & MERF_ENDPARA);
 788   return 0;
 789 }
 790
 791
 792 int
 793 ME_CharFromPos(ME_TextEditor *editor, int x, int y)
 794 {
 795   ME_Cursor cursor;
 796   RECT rc;
 797
 798   GetClientRect(editor->hWnd, &rc);
 799   if (x < 0 || y < 0 || x >= rc.right || y >= rc.bottom)
 800     return -1;
 801   y += ME_GetYScrollPos(editor);
 802   ME_FindPixelPos(editor, x, y, &cursor, NULL);
 803   return (ME_GetParagraph(cursor.pRun)->member.para.nCharOfs
 804           + cursor.pRun->member.run.nCharOfs + cursor.nOffset);
 805 }
 806
 807
 808 void ME_LButtonDown(ME_TextEditor *editor, int x, int y)
 809 {
 810   ME_Cursor tmp_cursor;
 811   int is_selection = 0;
 812
 813   editor->nUDArrowX = -1;
 814
 815   y += ME_GetYScrollPos(editor);
 816
 817   tmp_cursor = editor->pCursors[0];
 818   is_selection = ME_IsSelection(editor);
 819
 820   ME_FindPixelPos(editor, x, y, &editor->pCursors[0], &editor->bCaretAtEnd);
 821
 822   if (GetKeyState(VK_SHIFT)>=0)
 823   {
 824     editor->pCursors[1] = editor->pCursors[0];
 825   }
 826   else
 827   {
 828     if (!is_selection) {
 829       editor->pCursors[1] = tmp_cursor;
 830       is_selection = 1;
 831     }
 832   }
 833   ME_InvalidateSelection(editor);
 834   HideCaret(editor->hWnd);
 835   ME_MoveCaret(editor);
 836   ShowCaret(editor->hWnd);
 837   ME_ClearTempStyle(editor);
 838   ME_SendSelChange(editor);
 839 }
 840
 841 void ME_MouseMove(ME_TextEditor *editor, int x, int y)
 842 {
 843   ME_Cursor tmp_cursor;
 844
 845   y += ME_GetYScrollPos(editor);
 846
 847   tmp_cursor = editor->pCursors[0];
 848   /* FIXME: do something with the return value of ME_FindPixelPos */
 849   ME_FindPixelPos(editor, x, y, &tmp_cursor, &editor->bCaretAtEnd);
 850
 851   if (tmp_cursor.pRun == editor->pCursors[0].pRun &&
 852       tmp_cursor.nOffset == editor->pCursors[0].nOffset)
 853     return;
 854
 855   ME_InvalidateSelection(editor);
 856   editor->pCursors[0] = tmp_cursor;
 857   HideCaret(editor->hWnd);
 858   ME_MoveCaret(editor);
 859   ME_InvalidateSelection(editor);
 860   ShowCaret(editor->hWnd);
 861   ME_SendSelChange(editor);
 862 }
 863
 864 static ME_DisplayItem *ME_FindRunInRow(ME_TextEditor *editor, ME_DisplayItem *pRow,
 865                                 int x, int *pOffset, int *pbCaretAtEnd)
 866 {
 867   ME_DisplayItem *pNext, *pLastRun;
 868   pNext = ME_FindItemFwd(pRow, diRunOrStartRow);
 869   assert(pNext->type == diRun);
 870   pLastRun = pNext;
 871   *pbCaretAtEnd = FALSE;
 872   do {
 873     int run_x = pNext->member.run.pt.x;
 874     int width = pNext->member.run.nWidth;
 875     if (x < run_x)
 876     {
 877       if (pOffset) *pOffset = 0;
 878       return pNext;
 879     }
 880     if (x >= run_x && x < run_x+width)
 881     {
 882       int ch = ME_CharFromPointCursor(editor, x-run_x, &pNext->member.run);
 883       ME_String *s = pNext->member.run.strText;
 884       if (ch < s->nLen) {
 885         if (pOffset)
 886           *pOffset = ch;
 887         return pNext;
 888       }
 889     }
 890     pLastRun = pNext;
 891     pNext = ME_FindItemFwd(pNext, diRunOrStartRow);
 892   } while(pNext && pNext->type == diRun);
 893
 894   if ((pLastRun->member.run.nFlags & MERF_ENDPARA) == 0)
 895   {
 896     pNext = ME_FindItemFwd(pNext, diRun);
 897     if (pbCaretAtEnd) *pbCaretAtEnd = 1;
 898     if (pOffset) *pOffset = 0;
 899     return pNext;
 900   } else {
 901     if (pbCaretAtEnd) *pbCaretAtEnd = 0;
 902     if (pOffset) *pOffset = 0;
 903     return pLastRun;
 904   }
 905 }
 906
 907 static int ME_GetXForArrow(ME_TextEditor *editor, ME_Cursor *pCursor)
 908 {
 909   ME_DisplayItem *pRun = pCursor->pRun;
 910   int x;
 911
 912   if (editor->nUDArrowX != -1)
 913     x = editor->nUDArrowX;
 914   else {
 915     if (editor->bCaretAtEnd)
 916     {
 917       pRun = ME_FindItemBack(pRun, diRun);
 918       assert(pRun);
 919       x = pRun->member.run.pt.x + pRun->member.run.nWidth;
 920     }
 921     else {
 922       x = pRun->member.run.pt.x;
 923       x += ME_PointFromChar(editor, &pRun->member.run, pCursor->nOffset);
 924     }
 925     editor->nUDArrowX = x;
 926   }
 927   return x;
 928 }
 929
 930
 931 static void
 932 ME_MoveCursorLines(ME_TextEditor *editor, ME_Cursor *pCursor, int nRelOfs)
 933 {
 934   ME_DisplayItem *pRun = pCursor->pRun;
 935   ME_DisplayItem *pItem;
 936   int x = ME_GetXForArrow(editor, pCursor);
 937
 938   if (editor->bCaretAtEnd && !pCursor->nOffset)
 939     pRun = ME_FindItemBack(pRun, diRun);
 940   if (!pRun)
 941     return;
 942   if (nRelOfs == -1)
 943   {
 944     /* start of this row */
 945     pItem = ME_FindItemBack(pRun, diStartRow);
 946     assert(pItem);
 947     /* start of the previous row */
 948     pItem = ME_FindItemBack(pItem, diStartRow);
 949   }
 950   else
 951   {
 952     /* start of the next row */
 953     pItem = ME_FindItemFwd(pRun, diStartRow);
 954     /* FIXME If diParagraph is before diStartRow, wrap the next paragraph?
 955     */
 956   }
 957   if (!pItem)
 958   {
 959     /* row not found - ignore */
 960     return;
 961   }
 962   pCursor->pRun = ME_FindRunInRow(editor, pItem, x, &pCursor->nOffset, &editor->bCaretAtEnd);
 963   assert(pCursor->pRun);
 964   assert(pCursor->pRun->type == diRun);
 965 }
 966
 967
 968 static void ME_ArrowPageUp(ME_TextEditor *editor, ME_Cursor *pCursor)
 969 {
 970   ME_DisplayItem *pRun = pCursor->pRun;
 971   ME_DisplayItem *pLast, *p;
 972   int x, y, ys, yd, yp, yprev;
 973   ME_Cursor tmp_curs = *pCursor;
 974
 975   x = ME_GetXForArrow(editor, pCursor);
 976   if (!pCursor->nOffset && editor->bCaretAtEnd)
 977     pRun = ME_FindItemBack(pRun, diRun);
 978
 979   p = ME_FindItemBack(pRun, diStartRowOrParagraph);
 980   assert(p->type == diStartRow);
 981   yp = ME_FindItemBack(p, diParagraph)->member.para.nYPos;
 982   yprev = ys = y = yp + p->member.row.nYPos;
 983   yd = y - editor->sizeWindow.cy;
 984   pLast = p;
 985
 986   do {
 987     p = ME_FindItemBack(p, diStartRowOrParagraph);
 988     if (!p)
 989       break;
 990     if (p->type == diParagraph) { /* crossing paragraphs */
 991       if (p->member.para.prev_para == NULL)
 992         break;
 993       yp = p->member.para.prev_para->member.para.nYPos;
 994       continue;
 995     }
 996     y = yp + p->member.row.nYPos;
 997     if (y < yd)
 998       break;
 999     pLast = p;
1000     yprev = y;
1001   } while(1);
1002
1003   pCursor->pRun = ME_FindRunInRow(editor, pLast, x, &pCursor->nOffset, &editor->bCaretAtEnd);
1004   ME_UpdateSelection(editor, &tmp_curs);
1005   if (yprev < editor->sizeWindow.cy)
1006   {
1007     ME_EnsureVisible(editor, ME_FindItemFwd(editor->pBuffer->pFirst, diRun));
1008     ME_Repaint(editor);
1009   }
1010   else
1011   {
1012     ME_ScrollUp(editor, ys-yprev);
1013   }
1014   assert(pCursor->pRun);
1015   assert(pCursor->pRun->type == diRun);
1016 }
1017
1018 /* FIXME: in the original RICHEDIT, PageDown always scrolls by the same amount
1019    of pixels, even if it makes the scroll bar position exceed its normal maximum.
1020    In such a situation, clicking the scrollbar restores its position back to the
1021    normal range (ie. sets it to (doclength-screenheight)). */
1022
1023 static void ME_ArrowPageDown(ME_TextEditor *editor, ME_Cursor *pCursor)
1024 {
1025   ME_DisplayItem *pRun = pCursor->pRun;
1026   ME_DisplayItem *pLast, *p;
1027   int x, y, ys, yd, yp, yprev;
1028   ME_Cursor tmp_curs = *pCursor;
1029
1030   x = ME_GetXForArrow(editor, pCursor);
1031   if (!pCursor->nOffset && editor->bCaretAtEnd)
1032     pRun = ME_FindItemBack(pRun, diRun);
1033
1034   p = ME_FindItemBack(pRun, diStartRowOrParagraph);
1035   assert(p->type == diStartRow);
1036   yp = ME_FindItemBack(p, diParagraph)->member.para.nYPos;
1037   yprev = ys = y = yp + p->member.row.nYPos;
1038   yd = y + editor->sizeWindow.cy;
1039   pLast = p;
1040
1041   do {
1042     p = ME_FindItemFwd(p, diStartRowOrParagraph);
1043     if (!p)
1044       break;
1045     if (p->type == diParagraph) {
1046       yp = p->member.para.nYPos;
1047       continue;
1048     }
1049     y = yp + p->member.row.nYPos;
1050     if (y >= yd)
1051       break;
1052     pLast = p;
1053     yprev = y;
1054   } while(1);
1055
1056   pCursor->pRun = ME_FindRunInRow(editor, pLast, x, &pCursor->nOffset, &editor->bCaretAtEnd);
1057   ME_UpdateSelection(editor, &tmp_curs);
1058   if (yprev >= editor->nTotalLength-editor->sizeWindow.cy)
1059   {
1060     ME_EnsureVisible(editor, ME_FindItemBack(editor->pBuffer->pLast, diRun));
1061     ME_Repaint(editor);
1062   }
1063   else
1064   {
1065     ME_ScrollUp(editor,ys-yprev);
1066   }
1067   assert(pCursor->pRun);
1068   assert(pCursor->pRun->type == diRun);
1069 }
1070
1071 static void ME_ArrowHome(ME_TextEditor *editor, ME_Cursor *pCursor)
1072 {
1073   ME_DisplayItem *pRow = ME_FindItemBack(pCursor->pRun, diStartRow);
1074   /* bCaretAtEnd doesn't make sense if the cursor isn't set at the
1075   first character of the next row */
1076   assert(!editor->bCaretAtEnd || !pCursor->nOffset);
1077   ME_WrapMarkedParagraphs(editor);
1078   if (pRow) {
1079     ME_DisplayItem *pRun;
1080     if (editor->bCaretAtEnd && !pCursor->nOffset) {
1081       pRow = ME_FindItemBack(pRow, diStartRow);
1082       if (!pRow)
1083         return;
1084     }
1085     pRun = ME_FindItemFwd(pRow, diRun);
1086     if (pRun) {
1087       pCursor->pRun = pRun;
1088       pCursor->nOffset = 0;
1089     }
1090   }
1091   editor->bCaretAtEnd = FALSE;
1092 }
1093
1094 static void ME_ArrowCtrlHome(ME_TextEditor *editor, ME_Cursor *pCursor)
1095 {
1096   ME_DisplayItem *pRow = ME_FindItemBack(pCursor->pRun, diTextStart);
1097   if (pRow) {
1098     ME_DisplayItem *pRun = ME_FindItemFwd(pRow, diRun);
1099     if (pRun) {
1100       pCursor->pRun = pRun;
1101       pCursor->nOffset = 0;
1102     }
1103   }
1104 }
1105
1106 static void ME_ArrowEnd(ME_TextEditor *editor, ME_Cursor *pCursor)
1107 {
1108   ME_DisplayItem *pRow;
1109
1110   if (editor->bCaretAtEnd && !pCursor->nOffset)
1111     return;
1112
1113   pRow = ME_FindItemFwd(pCursor->pRun, diStartRowOrParagraphOrEnd);
1114   assert(pRow);
1115   if (pRow->type == diStartRow) {
1116     /* FIXME WTF was I thinking about here ? */
1117     ME_DisplayItem *pRun = ME_FindItemFwd(pRow, diRun);
1118     assert(pRun);
1119     pCursor->pRun = pRun;
1120     pCursor->nOffset = 0;
1121     editor->bCaretAtEnd = 1;
1122     return;
1123   }
1124   pCursor->pRun = ME_FindItemBack(pRow, diRun);
1125   assert(pCursor->pRun && pCursor->pRun->member.run.nFlags & MERF_ENDPARA);
1126   pCursor->nOffset = 0;
1127   editor->bCaretAtEnd = FALSE;
1128 }
1129
1130 static void ME_ArrowCtrlEnd(ME_TextEditor *editor, ME_Cursor *pCursor)
1131 {
1132   ME_DisplayItem *p = ME_FindItemFwd(pCursor->pRun, diTextEnd);
1133   assert(p);
1134   p = ME_FindItemBack(p, diRun);
1135   assert(p);
1136   assert(p->member.run.nFlags & MERF_ENDPARA);
1137   pCursor->pRun = p;
1138   pCursor->nOffset = 0;
1139   editor->bCaretAtEnd = FALSE;
1140 }
1141
1142 BOOL ME_IsSelection(ME_TextEditor *editor)
1143 {
1144   return memcmp(&editor->pCursors[0], &editor->pCursors[1], sizeof(ME_Cursor))!=0;
1145 }
1146
1147 static int ME_GetSelCursor(ME_TextEditor *editor, int dir)
1148 {
1149   int cdir = ME_GetCursorOfs(editor, 0) - ME_GetCursorOfs(editor, 1);
1150
1151   if (cdir*dir>0)
1152     return 0;
1153   else
1154     return 1;
1155 }
1156
1157 BOOL ME_UpdateSelection(ME_TextEditor *editor, const ME_Cursor *pTempCursor)
1158 {
1159   ME_Cursor old_anchor = editor->pCursors[1];
1160
1161   if (GetKeyState(VK_SHIFT)>=0) /* cancelling selection */
1162   {
1163     /* any selection was present ? if so, it's no more, repaint ! */
1164     editor->pCursors[1] = editor->pCursors[0];
1165     if (memcmp(pTempCursor, &old_anchor, sizeof(ME_Cursor))) {
1166       return TRUE;
1167     }
1168     return FALSE;
1169   }
1170   else
1171   {
1172     if (!memcmp(pTempCursor, &editor->pCursors[1], sizeof(ME_Cursor))) /* starting selection */
1173     {
1174       editor->pCursors[1] = *pTempCursor;
1175       return TRUE;
1176     }
1177   }
1178
1179   ME_Repaint(editor);
1180   return TRUE;
1181 }
1182
1183 void ME_DeleteSelection(ME_TextEditor *editor)
1184 {
1185   int from, to;
1186   ME_GetSelection(editor, &from, &to);
1187   ME_DeleteTextAtCursor(editor, ME_GetSelCursor(editor,-1), to-from);
1188 }
1189
1190 ME_Style *ME_GetSelectionInsertStyle(ME_TextEditor *editor)
1191 {
1192   ME_Style *style;
1193   int from, to;
1194   ME_Cursor c;
1195
1196   ME_GetSelection(editor, &from, &to);
1197   ME_CursorFromCharOfs(editor, from, &c);
1198   if (from != to) {
1199     style = c.pRun->member.run.style;
1200     ME_AddRefStyle(style); /* ME_GetInsertStyle has already done that */
1201   }
1202   else
1203     style = ME_GetInsertStyle(editor, 0);
1204   return style;
1205 }
1206
1207 void ME_SendSelChange(ME_TextEditor *editor)
1208 {
1209   SELCHANGE sc;
1210
1211   ME_ClearTempStyle(editor);
1212
1213   if (!(editor->nEventMask & ENM_SELCHANGE))
1214     return;
1215
1216   sc.nmhdr.hwndFrom = editor->hWnd;
1217   sc.nmhdr.idFrom = GetWindowLongW(editor->hWnd, GWLP_ID);
1218   sc.nmhdr.code = EN_SELCHANGE;
1219   SendMessageW(editor->hWnd, EM_EXGETSEL, 0, (LPARAM)&sc.chrg);
1220   sc.seltyp = SEL_EMPTY;
1221   if (sc.chrg.cpMin != sc.chrg.cpMax)
1222     sc.seltyp |= SEL_TEXT;
1223   if (sc.chrg.cpMin < sc.chrg.cpMax+1) /* wth were RICHEDIT authors thinking ? */
1224     sc.seltyp |= SEL_MULTICHAR;
1225   SendMessageW(GetParent(editor->hWnd), WM_NOTIFY, sc.nmhdr.idFrom, (LPARAM)&sc);
1226 }
1227
1228
1229 BOOL
1230 ME_ArrowKey(ME_TextEditor *editor, int nVKey, BOOL extend, BOOL ctrl)
1231 {
1232   int nCursor = 0;
1233   ME_Cursor *p = &editor->pCursors[nCursor];
1234   ME_Cursor tmp_curs = *p;
1235   BOOL success = FALSE;
1236
1237   ME_CheckCharOffsets(editor);
1238   editor->nUDArrowX = -1;
1239   switch(nVKey) {
1240     case VK_LEFT:
1241       editor->bCaretAtEnd = 0;
1242       if (ctrl)
1243         success = ME_MoveCursorWords(editor, &tmp_curs, -1);
1244       else
1245         success = ME_MoveCursorChars(editor, &tmp_curs, -1);
1246       break;
1247     case VK_RIGHT:
1248       editor->bCaretAtEnd = 0;
1249       if (ctrl)
1250         success = ME_MoveCursorWords(editor, &tmp_curs, +1);
1251       else
1252         success = ME_MoveCursorChars(editor, &tmp_curs, +1);
1253       break;
1254     case VK_UP:
1255       ME_MoveCursorLines(editor, &tmp_curs, -1);
1256       break;
1257     case VK_DOWN:
1258       ME_MoveCursorLines(editor, &tmp_curs, +1);
1259       break;
1260     case VK_PRIOR:
1261       ME_ArrowPageUp(editor, &tmp_curs);
1262       break;
1263     case VK_NEXT:
1264       ME_ArrowPageDown(editor, &tmp_curs);
1265       break;
1266     case VK_HOME: {
1267       if (ctrl)
1268         ME_ArrowCtrlHome(editor, &tmp_curs);
1269       else
1270         ME_ArrowHome(editor, &tmp_curs);
1271       editor->bCaretAtEnd = 0;
1272       break;
1273     }
1274     case VK_END:
1275       if (ctrl)
1276         ME_ArrowCtrlEnd(editor, &tmp_curs);
1277       else
1278         ME_ArrowEnd(editor, &tmp_curs);
1279       break;
1280   }
1281
1282   if (!extend)
1283     editor->pCursors[1] = tmp_curs;
1284   *p = tmp_curs;
1285
1286   ME_InvalidateSelection(editor);
1287   ME_Repaint(editor);
1288   HideCaret(editor->hWnd);
1289   ME_EnsureVisible(editor, tmp_curs.pRun);
1290   ME_ShowCaret(editor);
1291   ME_SendSelChange(editor);
1292   return success;
1293 }