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1 /*
2 *  File:        formulabase.C
3 *  Purpose:     Implementation of common parts of the LyX  math insets
4 *  Author:      Alejandro Aguilar Sierra <asierra@servidor.unam.mx>
5 *  Created:     January 1996
6 *
7 *  Copyright: 1996-1998 Alejandro Aguilar Sierra
8 *
9 *  Version: 0.4, Lyx project.
10 *
11 *   You are free to use and modify this code under the terms of
12 *   the GNU General Public Licence version 2 or later.
13 */
14
15 #include <config.h>
16 #include <fstream>
17
18 #include "Lsstream.h"
19 #include "support/LAssert.h"
20
21 #ifdef __GNUG__
22 #pragma implementation
23 #endif
24
25 #include "formula.h"
26 #include "formulamacro.h"
27 #include "commandtags.h"
28 #include "math_cursor.h"
29 #include "BufferView.h"
30 #include "lyxtext.h"
31 #include "lyxfunc.h"
32 #include "gettext.h"
33 #include "LaTeXFeatures.h"
34 #include "debug.h"
35 #include "support.h"
36 #include "support/lstrings.h"
37 #include "LyXView.h"
38 #include "Painter.h"
39 #include "font.h"
40 #include "math_arrayinset.h"
41 #include "math_spaceinset.h"
42 #include "math_macrotable.h"
43 #include "math_factory.h"
44 #include "support/lyxlib.h"
45 #include "undo_funcs.h"
46
47 using std::endl;
48 using std::ostream;
49 using std::vector;
50
51 extern char const * latex_mathenv[];
52 MathCursor        * mathcursor = 0;
53
54
55 namespace {
56
57
58 // local global
59 int sel_x;
60 int sel_y;
61 bool sel_flag;
62
63 void handleFont(BufferView * bv, MathTextCodes t) 
64 {
65         if (mathcursor->selection())
66                 bv->lockedInsetStoreUndo(Undo::EDIT);
67         mathcursor->handleFont(t);
68 }
69
70
71 void handleAccent(BufferView * bv, string const & name)
72 {
73         bv->lockedInsetStoreUndo(Undo::EDIT);
74         mathcursor->insert(createMathInset(name));
75 }
76
77
78 bool openNewInset(BufferView * bv, UpdatableInset * new_inset)
79 {
80         LyXText * lt = bv->getLyXText();
81         
82         bv->beforeChange(lt);
83         finishUndo();
84         if (!bv->insertInset(new_inset)) {
85                 delete new_inset;
86                 return false;
87         }
88         new_inset->edit(bv, 0, 0, 0);
89         return true;
90 }
91
92
93 // returns the nearest enclosing grid
94 MathArrayInset * matrixpar(MathInset::idx_type & idx)
95 {
96         idx = 0;
97         return mathcursor ? mathcursor->enclosingArray(idx) : 0; 
98 }
99
100
101 } // namespace anon
102
103
104
105 InsetFormulaBase::InsetFormulaBase()
106         : view_(0), font_()
107 {
108         // This is needed as long the math parser is not re-entrant
109         MathMacroTable::builtinMacros();
110         //lyxerr << "sizeof MathInset: " << sizeof(MathInset) << "\n";
111 }
112
113
114 // Check if uses AMS macros
115 void InsetFormulaBase::validate(LaTeXFeatures &) const
116 {}
117
118
119 void InsetFormulaBase::metrics(BufferView * bv, LyXFont const & f) const 
120 {
121         if (bv)
122                 view_ = bv;
123         font_ = f;
124         MathMetricsInfo mi(view_, font_, display() ? LM_ST_DISPLAY : LM_ST_TEXT);
125         par()->metrics(mi);
126 }
127
128
129 string const InsetFormulaBase::editMessage() const
130 {
131         return _("Math editor mode");
132 }
133
134
135 void InsetFormulaBase::edit(BufferView * bv, int x, int /*y*/, unsigned int)
136 {
137         if (!bv->lockInset(this))
138                 lyxerr[Debug::MATHED] << "Cannot lock inset!!!" << endl;
139
140         mathcursor = new MathCursor(this, x == 0);
141         metrics(bv);
142         // if that is removed, we won't get the magenta box when entering an
143         // inset for the first time
144         bv->updateInset(this, false);
145         sel_x = 0;
146         sel_y = 0;
147         sel_flag = false;
148 }
149
150
151 void InsetFormulaBase::edit(BufferView * bv, bool front)
152 {
153         // looks hackish but seems to work
154         edit(bv, front ? 0 : 1, 0, 0);
155 }
156
157
158 void InsetFormulaBase::insetUnlock(BufferView * bv)
159 {
160         if (mathcursor) {
161                 if (mathcursor->inMacroMode()) {
162                         mathcursor->macroModeClose();
163                         updateLocal(bv, true);
164                 }
165                 delete mathcursor;
166                 mathcursor = 0;
167         }
168         bv->updateInset(this, false);
169 }
170
171
172 void InsetFormulaBase::getCursorPos(BufferView *, int & x, int & y) const
173 {
174         mathcursor->getPos(x, y);
175         x -= par()->xo();
176         y -= par()->yo();
177         y -= 3;
178 }
179
180
181 void InsetFormulaBase::toggleInsetCursor(BufferView * bv)
182 {
183         if (!mathcursor)
184                 return;
185
186         if (isCursorVisible())
187                 bv->hideLockedInsetCursor();
188         else {
189                 int x;
190                 int y;
191                 mathcursor->getPos(x, y);
192                 //x -= par()->xo();
193                 y -= par()->yo();
194                 y -= 3;
195                 int asc = 0;
196                 int des = 0;
197                 MathMetricsInfo mi(bv, font_, LM_ST_TEXT);
198                 math_font_max_dim(LM_TC_TEXTRM, mi, asc, des);
199                 bv->showLockedInsetCursor(x, y, asc, des);
200         }
201
202         toggleCursorVisible();
203 }
204
205
206 void InsetFormulaBase::showInsetCursor(BufferView * bv, bool)
207 {
208         if (!isCursorVisible()) {
209                 if (mathcursor) {
210                         int x;
211                         int y;
212                         mathcursor->getPos(x, y);
213                         x -= par()->xo();
214                         y -= par()->yo();
215                         int asc = 0;
216                         int des = 0;
217                         MathMetricsInfo mi(bv, font_, LM_ST_TEXT);
218                         math_font_max_dim(LM_TC_TEXTRM, mi, asc, des);
219                         bv->fitLockedInsetCursor(x, y, asc, des);
220                 }
221                 toggleInsetCursor(bv);
222         }
223 }
224
225
226 void InsetFormulaBase::hideInsetCursor(BufferView * bv)
227 {
228         if (isCursorVisible())
229                 toggleInsetCursor(bv);
230 }
231
232
233 void InsetFormulaBase::toggleInsetSelection(BufferView * bv)
234 {
235         if (mathcursor)
236                 bv->updateInset(this, false);
237 }
238
239
240 vector<string> const InsetFormulaBase::getLabelList() const
241 {
242   return std::vector<string>();
243 }
244
245
246 void InsetFormulaBase::updateLocal(BufferView * bv, bool dirty)
247 {
248         metrics(bv);
249         bv->updateInset(this, dirty);
250 }
251
252
253 void InsetFormulaBase::insetButtonRelease(BufferView * bv,
254                                           int x, int y, int /*button*/)
255 {
256         if (mathcursor) {
257                 hideInsetCursor(bv);
258                 x += par()->xo();
259                 y += par()->yo();
260                 mathcursor->setPos(x, y);
261                 showInsetCursor(bv);
262                 if (sel_flag) {
263                         sel_flag = false;
264                         sel_x = 0;
265                         sel_y = 0;
266                 }
267                 bv->updateInset(this, false);
268         }
269 }
270
271
272 void InsetFormulaBase::insetButtonPress(BufferView * bv,
273                                         int x, int y, int /*button*/)
274 {
275         sel_flag = false;
276         sel_x = x;
277         sel_y = y;
278         if (mathcursor && mathcursor->selection()) {
279                 mathcursor->selClear();
280                 bv->updateInset(this, false);
281         }
282 }
283
284
285 void InsetFormulaBase::insetMotionNotify(BufferView * bv,
286                                          int x, int y, int /*button*/)
287 {
288         if (sel_x && sel_y && abs(x-sel_x) > 4 && !sel_flag) {
289                 sel_flag = true;
290                 hideInsetCursor(bv);
291                 mathcursor->setPos(sel_x + par()->xo(), sel_y + par()->yo());
292                 mathcursor->selStart();
293                 showInsetCursor(bv);
294                 mathcursor->getPos(sel_x, sel_y);
295         } else if (sel_flag) {
296                 hideInsetCursor(bv);
297                 x += par()->xo();
298                 y += par()->yo();
299                 mathcursor->setPos(x, y);
300                 showInsetCursor(bv);
301                 mathcursor->getPos(x, y);
302                 if (sel_x != x || sel_y != y)
303                         bv->updateInset(this, false);
304                 sel_x = x;
305                 sel_y = y;
306         }
307 }
308
309
310 void InsetFormulaBase::insetKeyPress(XKeyEvent *)
311 {
312         lyxerr[Debug::MATHED] << "Used InsetFormulaBase::InsetKeyPress." << endl;
313 }
314
315
316 UpdatableInset::RESULT
317 InsetFormulaBase::localDispatch(BufferView * bv, kb_action action,
318                             string const & arg)
319 {
320         //lyxerr << "InsetFormulaBase::localDispatch: act: " << action
321         //      << " arg: '" << arg << "' cursor: " << mathcursor << "\n";
322
323         if (!mathcursor) 
324                 return UNDISPATCHED;
325
326         RESULT result      = DISPATCHED;
327         bool sel           = false;
328         bool was_macro     = mathcursor->inMacroMode();
329         bool was_selection = mathcursor->selection();
330
331         hideInsetCursor(bv);
332
333         mathcursor->normalize();
334
335         switch (action) {
336
337                 // --- Cursor Movements ---------------------------------------------
338
339         case LFUN_RIGHTSEL:
340                 sel = true; // fall through...
341
342         case LFUN_RIGHT:
343                 result = mathcursor->right(sel) ? DISPATCHED : FINISHED_RIGHT;
344                 updateLocal(bv, false);
345                 break;
346
347
348         case LFUN_LEFTSEL:
349                 sel = true; // fall through
350
351         case LFUN_LEFT:
352                 result = mathcursor->left(sel) ? DISPATCHED : FINISHED;
353                 updateLocal(bv, false);
354                 break;
355
356
357         case LFUN_UPSEL:
358                 sel = true;
359
360         case LFUN_UP:
361                 result = mathcursor->up(sel) ? DISPATCHED : FINISHED_UP;
362                 updateLocal(bv, false);
363                 break;
364
365
366         case LFUN_DOWNSEL:
367                 sel = true;
368
369         case LFUN_DOWN:
370                 result = mathcursor->down(sel) ? DISPATCHED : FINISHED_DOWN;
371                 updateLocal(bv, false);
372                 break;
373
374         case LFUN_HOMESEL:
375                 sel = true;
376
377         case LFUN_HOME:
378                 mathcursor->home(sel);
379                 updateLocal(bv, false);
380                 break;
381
382         case LFUN_ENDSEL:
383                 sel = true;
384
385         case LFUN_END:
386                 mathcursor->end(sel);
387                 updateLocal(bv, false);
388                 break;
389
390         case LFUN_DELETE_LINE_FORWARD:
391                 bv->lockedInsetStoreUndo(Undo::DELETE);
392                 mathcursor->delLine();
393                 updateLocal(bv, true);
394                 break;
395
396         case LFUN_TAB:
397                 mathcursor->idxNext();
398                 updateLocal(bv, false);
399                 break;
400
401         case LFUN_SHIFT_TAB:
402                 mathcursor->idxPrev();
403                 updateLocal(bv, false);
404                 break;
405
406         case LFUN_TABINSERT:
407                 bv->lockedInsetStoreUndo(Undo::EDIT);
408                 mathcursor->splitCell();
409                 updateLocal(bv, true);
410                 break;
411
412         case LFUN_BACKSPACE:
413                 bv->lockedInsetStoreUndo(Undo::DELETE);
414                 mathcursor->backspace();
415                 bv->updateInset(this, true);
416                 break;
417
418         case LFUN_DELETE:
419                 bv->lockedInsetStoreUndo(Undo::DELETE);
420                 mathcursor->erase();
421                 bv->updateInset(this, true);
422                 break;
423
424                 //    case LFUN_GETXY:
425                 //      sprintf(dispatch_buffer, "%d %d",);
426                 //      dispatch_result = dispatch_buffer;
427                 //      break;
428         case LFUN_SETXY: {
429                 lyxerr << "LFUN_SETXY broken!\n";
430                 int x;
431                 int y;
432                 int x1;
433                 int y1;
434                 istringstream is(arg.c_str());
435                 is >> x >> y;
436                 par()->getXY(x1, y1);
437                 mathcursor->setPos(x1 + x, y1 + y);
438                 updateLocal(bv, false);
439                 break;
440         }
441
442         case LFUN_PASTE:
443                 if (was_macro)
444                         mathcursor->macroModeClose();
445                 bv->lockedInsetStoreUndo(Undo::INSERT);
446                 mathcursor->selPaste();
447                 updateLocal(bv, true);
448                 break;
449
450         case LFUN_CUT:
451                 bv->lockedInsetStoreUndo(Undo::DELETE);
452                 mathcursor->selCut();
453                 updateLocal(bv, true);
454                 break;
455
456         case LFUN_COPY:
457                 mathcursor->selCopy();
458                 break;
459
460         case LFUN_WORDRIGHTSEL:
461         case LFUN_WORDLEFTSEL:
462                 break;
463
464                 // --- accented characters ------------------------------
465
466         case LFUN_UMLAUT:       handleAccent(bv, "ddot"); break;
467         case LFUN_CIRCUMFLEX:   handleAccent(bv, "hat"); break;
468         case LFUN_GRAVE:        handleAccent(bv, "grave"); break;
469         case LFUN_ACUTE:        handleAccent(bv, "acute"); break;
470         case LFUN_TILDE:        handleAccent(bv, "tilde"); break;
471         case LFUN_MACRON:       handleAccent(bv, "bar"); break;
472         case LFUN_DOT:          handleAccent(bv, "dot"); break;
473         case LFUN_CARON:        handleAccent(bv, "check"); break;
474         case LFUN_BREVE:        handleAccent(bv, "breve"); break;
475         case LFUN_VECTOR:       handleAccent(bv, "vec"); break;
476
477         //  Math fonts
478         case LFUN_GREEK_TOGGLE: handleFont(bv, LM_TC_GREEK); break;
479         case LFUN_BOLD:         handleFont(bv, LM_TC_BF); break;
480         case LFUN_SANS:         handleFont(bv, LM_TC_SF); break;
481         case LFUN_EMPH:         handleFont(bv, LM_TC_CAL); break;
482         case LFUN_ROMAN:        handleFont(bv, LM_TC_RM); break;
483         case LFUN_CODE:         handleFont(bv, LM_TC_TT); break;
484         case LFUN_NOUN:         handleFont(bv, LM_TC_BB); break;
485         case LFUN_DEFAULT:      handleFont(bv, LM_TC_VAR); break;
486
487         case LFUN_GREEK: 
488                 handleFont(bv, LM_TC_GREEK1);
489                 if (arg.size())
490                         mathcursor->interpret(arg);
491                 break;
492
493         case LFUN_MATH_MODE:
494                 handleFont(bv, LM_TC_TEXTRM);
495                 //bv->owner()->message(_("math text mode toggled"));
496                 break;
497
498         case LFUN_MATH_LIMITS:
499                 bv->lockedInsetStoreUndo(Undo::INSERT);
500                 if (mathcursor->toggleLimits())
501                         updateLocal(bv, true);
502                 break;
503
504         case LFUN_MATH_SIZE:
505 #if 0
506                 if (!arg.empty()) {
507                         bv->lockedInsetStoreUndo(Undo::INSERT);
508                         mathcursor->setSize(arg);
509                         updateLocal(bv, true);
510                 }
511 #endif
512                 break;
513
514         case LFUN_INSERT_MATRIX:
515                 if (!arg.empty()) {
516                         bv->lockedInsetStoreUndo(Undo::INSERT);
517                         mathcursor->interpret("matrix " + arg);
518                         updateLocal(bv, true);
519                 }
520                 break;
521
522         case LFUN_MATH_SPACE:
523         {
524                 bv->lockedInsetStoreUndo(Undo::EDIT);
525                 mathcursor->insert(MathAtom(new MathSpaceInset(1)));
526                 updateLocal(bv, true);
527                 break;
528         }
529
530         case LFUN_MATH_DELIM:
531         {
532                 bv->lockedInsetStoreUndo(Undo::INSERT);
533                 //lyxerr << "formulabase::LFUN_MATH_DELIM, arg: '" << arg << "'\n";
534                 string ls;
535                 string rs;
536                 istringstream is(arg.c_str());
537                 is >> ls >> rs;
538                 if (!is) {
539                         lyxerr << "can't parse delimeters from '" << arg << "'\n";
540                         break;
541                 }
542                 bv->lockedInsetStoreUndo(Undo::EDIT);
543                 mathcursor->handleDelim(ls, rs);
544                 updateLocal(bv, true);
545                 break;
546         }
547
548         case LFUN_PROTECTEDSPACE:
549                 //lyxerr << " called LFUN_PROTECTEDSPACE\n";
550                 bv->lockedInsetStoreUndo(Undo::INSERT);
551                 mathcursor->insert(MathAtom(new MathSpaceInset(1)));
552                 updateLocal(bv, true);
553                 break;
554
555         case LFUN_UNDO:
556                 bv->owner()->message(_("Invalid action in math mode!"));
557                 break;
558
559
560         case LFUN_MATH_HALIGN:
561         {
562                 bv->lockedInsetStoreUndo(Undo::INSERT);
563                 lyxerr << "handling halign '" << arg << "'\n";
564                 MathInset::idx_type idx;
565                 MathArrayInset * p = matrixpar(idx);
566                 if (!p)
567                         break; 
568                 p->halign(arg.size() ? arg[0] : 'c', p->col(idx));
569                 updateLocal(bv, true);
570                 break;
571         }
572
573         case LFUN_MATH_VALIGN:
574         {
575                 bv->lockedInsetStoreUndo(Undo::INSERT);
576                 lyxerr << "handling valign '" << arg << "'\n";
577                 MathInset::idx_type idx;
578                 MathArrayInset * p = matrixpar(idx);
579                 if (!p)
580                         break; 
581                 p->valign(arg.size() ? arg[0] : 'c');
582                 updateLocal(bv, true);
583                 break;
584         }
585
586         case LFUN_MATH_ROW_INSERT:
587         {
588                 bv->lockedInsetStoreUndo(Undo::INSERT);
589                 MathInset::idx_type idx;
590                 MathArrayInset * p = matrixpar(idx);
591                 lyxerr << " calling LFUN_MATH_ROW_INSERT on " << p << endl;
592                 if (!p)
593                         break; 
594                 p->addRow(p->row(idx));
595                 updateLocal(bv, true);
596                 break;
597         }
598
599         case LFUN_MATH_ROW_DELETE:
600         {
601                 bv->lockedInsetStoreUndo(Undo::INSERT);
602                 MathInset::idx_type idx;
603                 MathArrayInset * p = matrixpar(idx);
604                 lyxerr << " calling LFUN_MATH_ROW_DELETE on " << p << endl;
605                 if (!p)
606                         break; 
607                 p->delRow(p->row(idx));
608                 updateLocal(bv, true);
609                 break;
610         }
611
612         case LFUN_MATH_COLUMN_INSERT:
613         {
614                 bv->lockedInsetStoreUndo(Undo::INSERT);
615                 MathInset::idx_type idx;
616                 MathArrayInset * p = matrixpar(idx);
617                 if (!p)
618                         break; 
619                 p->addCol(p->col(idx));
620                 updateLocal(bv, true);
621                 break;
622         }
623
624         case LFUN_MATH_COLUMN_DELETE:
625         {
626                 bv->lockedInsetStoreUndo(Undo::INSERT);
627                 MathInset::idx_type idx;
628                 MathArrayInset * p = matrixpar(idx);
629                 if (!p)
630                         break; 
631                 p->delCol(p->col(idx));
632                 updateLocal(bv, true);
633                 break;
634         }
635
636         case LFUN_EXEC_COMMAND:
637                 result = UNDISPATCHED;
638                 break;
639
640         case -1:
641         case LFUN_INSERT_MATH:
642         case LFUN_SELFINSERT:
643                 if (!arg.empty()) {
644                         bv->lockedInsetStoreUndo(Undo::INSERT);
645                         mathcursor->interpret(arg);
646                         updateLocal(bv, true);
647                 }
648                 break;
649
650         case LFUN_MATH_PANEL:
651                 result = UNDISPATCHED;
652                 break;
653
654         default:
655                 result = UNDISPATCHED;
656         }
657
658         lyx::Assert(mathcursor);
659         //mathcursor->normalize();
660
661         if (//was_macro != mathcursor->inMacroMode() &&
662                                 action >= 0 && action != LFUN_BACKSPACE) 
663                 updateLocal(bv, true);
664         
665         if (mathcursor->selection() || was_selection)
666                 toggleInsetSelection(bv);
667
668         if (result == DISPATCHED || result == DISPATCHED_NOUPDATE ||
669             result == UNDISPATCHED)
670                 showInsetCursor(bv);
671         else
672                 bv->unlockInset(this);
673
674         return result;  // original version
675 }
676
677
678 Inset::Code InsetFormulaBase::lyxCode() const
679 {
680         return Inset::MATH_CODE;
681 }
682
683
684 void mathDispatchCreation(BufferView * bv, string const & arg, bool display)
685 {
686         if (bv->available()) {
687                 // use selection if available..
688                 //string sel;
689                 //if (action == LFUN_MATH_IMPORT_SELECTION)
690                 //      sel = "";
691                 //else
692
693                 string sel = bv->getLyXText()->selectionAsString(bv->buffer(), false);
694
695                 InsetFormulaBase * f;
696                 if (sel.empty()) {
697                         f = new InsetFormula;
698                         if (openNewInset(bv, f)) {
699                                 // don't do that also for LFUN_MATH_MODE unless you want end up with
700                                 // always changing to mathrm when opening an inlined inset
701                                 // -- I really hate "LyXfunc overloading"...
702                                 if (display)
703                                         f->localDispatch(bv, LFUN_MATH_DISPLAY, string());
704                                 f->localDispatch(bv, LFUN_INSERT_MATH, arg);
705                         }
706                 } else {
707                         // create a macro if we see "\\newcommand" somewhere, and an ordinary
708                         // formula otherwise
709                         if (sel.find("\\newcommand") == string::npos) 
710                                 f = new InsetFormula(sel);
711                         else
712                                 f = new InsetFormulaMacro(sel);
713                         bv->getLyXText()->cutSelection(bv);
714                         openNewInset(bv, f);
715                 }
716         }
717         bv->owner()->getLyXFunc()->setMessage(N_("Math editor mode"));
718 }
719
720
721 void mathDispatchMathDisplay(BufferView * bv, string const & arg)
722 {
723         mathDispatchCreation(bv, arg, true);
724 }
725
726         
727 void mathDispatchMathMode(BufferView * bv, string const & arg)
728 {
729         mathDispatchCreation(bv, arg, false);
730 }
731
732
733 void mathDispatchMathImportSelection(BufferView * bv, string const & arg)
734 {
735         mathDispatchCreation(bv, arg, true);
736 }
737
738
739 void mathDispatchMathMacro(BufferView * bv, string const & arg)
740 {
741         if (bv->available()) {
742                 if (arg.empty())
743                         bv->owner()->getLyXFunc()->setErrorMessage(N_("Missing argument"));
744                 else {
745                         string s(arg);
746                         string const s1 = token(s, ' ', 1);
747                         int const na = s1.empty() ? 0 : lyx::atoi(s1);
748                         openNewInset(bv, new InsetFormulaMacro(token(s, ' ', 0), na));
749                 }
750         }
751 }
752
753
754 void mathDispatchMathDelim(BufferView * bv, string const & arg)
755 {          
756         if (bv->available()) { 
757                 if (openNewInset(bv, new InsetFormula))
758                         bv->theLockingInset()->localDispatch(bv, LFUN_MATH_DELIM, arg);
759         }
760 }          
761
762
763 void mathDispatchInsertMatrix(BufferView * bv, string const & arg)
764 {          
765         if (bv->available()) { 
766                 if (openNewInset(bv, new InsetFormula))
767                         bv->theLockingInset()->localDispatch(bv, LFUN_INSERT_MATRIX, arg);
768         }
769 }          
770
771
772 void mathDispatchInsertMath(BufferView * bv, string const & arg)
773 {
774         if (bv->available()) {
775                 if (arg.size() && arg[0] == '\\') {
776                         InsetFormula * f = new InsetFormula(arg);
777                         if (!bv->insertInset(f))
778                                 delete f;
779                 } else
780                         mathDispatchMathMode(bv, arg);
781         }
782 }
783
784
785 void mathDispatchGreek(BufferView * bv, string const & arg)
786 {          
787         if (bv->available()) { 
788                 InsetFormula * f = new InsetFormula;
789                 if (openNewInset(bv, f)) {
790                         bv->theLockingInset()->localDispatch(bv, LFUN_GREEK, arg);
791                         bv->unlockInset(f);
792                 }
793         }
794 }          
795