src/mathed/formulabase.C

   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 "lyxrc.h"
  28 #include "funcrequest.h"
  29 #include "BufferView.h"
  30 #include "lyxtext.h"
  31 #include "gettext.h"
  32 #include "LaTeXFeatures.h"
  33 #include "debug.h"
  34 #include "math_support.h"
  35 #include "math_metricsinfo.h"
  36 #include "support/lstrings.h"
  37 #include "frontends/LyXView.h"
  38 #include "frontends/font_metrics.h"
  39 #include "frontends/mouse_state.h"
  40 #include "Lsstream.h"
  41 #include "math_arrayinset.h"
  42 #include "math_charinset.h"
  43 #include "math_deliminset.h"
  44 #include "math_cursor.h"
  45 #include "math_factory.h"
  46 #include "math_fontinset.h"
  47 #include "math_hullinset.h"
  48 #include "math_iterator.h"
  49 #include "math_macrotable.h"
  50 #include "math_parser.h"
  51 #include "math_pos.h"
  52 #include "math_spaceinset.h"
  53 #include "undo_funcs.h"
  54 #include "textpainter.h"
  55 #include "frontends/Dialogs.h"
  56 #include "intl.h"
  57 #include "insets/insetcommandparams.h"
  58 #include "ref_inset.h"
  59
  60 using std::endl;
  61 using std::ostream;
  62 using std::vector;
  63 using std::abs;
  64
  65 MathCursor * mathcursor = 0;
  66
  67
  68 namespace {
  69
  70 // local global
  71 int first_x;
  72 int first_y;
  73
  74
  75
  76 bool openNewInset(BufferView * bv, UpdatableInset * new_inset)
  77 {
  78         if (!bv->insertInset(new_inset)) {
  79                 delete new_inset;
  80                 return false;
  81         }
  82         new_inset->edit(bv, true);
  83         return true;
  84 }
  85
  86
  87 } // namespace anon
  88
  89
  90
  91 InsetFormulaBase::InsetFormulaBase()
  92         : font_(), xo_(0), yo_(0)
  93 {
  94         // This is needed as long the math parser is not re-entrant
  95         initMath();
  96         //lyxerr << "sizeof MathInset: " << sizeof(MathInset) << "\n";
  97         //lyxerr << "sizeof MathMetricsInfo: " << sizeof(MathMetricsInfo) << "\n";
  98         //lyxerr << "sizeof MathCharInset: " << sizeof(MathCharInset) << "\n";
  99         //lyxerr << "sizeof LyXFont: " << sizeof(LyXFont) << "\n";
 100 }
 101
 102
 103 // simply scrap this function if you want
 104 void InsetFormulaBase::mutateToText()
 105 {
 106 #if 0
 107         // translate to latex
 108         ostringstream os;
 109         latex(NULL, os, false, false);
 110         string str = os.str();
 111
 112         // insert this text
 113         LyXText * lt = view_->getLyXText();
 114         string::const_iterator cit = str.begin();
 115         string::const_iterator end = str.end();
 116         for (; cit != end; ++cit)
 117                 view_->owner()->getIntl()->getTransManager().TranslateAndInsert(*cit, lt);
 118
 119         // remove ourselves
 120         //view_->owner()->dispatch(LFUN_ESCAPE);
 121 #endif
 122 }
 123
 124
 125 void InsetFormulaBase::handleFont
 126         (BufferView * bv, string const & arg, string const & font)
 127 {
 128         bv->lockedInsetStoreUndo(Undo::EDIT);
 129         bool sel = mathcursor->selection();
 130         if (sel)
 131                 updateLocal(bv, true);
 132         mathcursor->handleNest(createMathInset(font));
 133         mathcursor->insert(arg);
 134         if (!sel)
 135                 updateLocal(bv, false);
 136 }
 137
 138
 139 // Check if uses AMS macros
 140 void InsetFormulaBase::validate(LaTeXFeatures &) const
 141 {}
 142
 143
 144 void InsetFormulaBase::metrics(BufferView * bv, LyXFont const & f) const
 145 {
 146         font_ = f;
 147         metrics(bv);
 148 }
 149
 150
 151 void InsetFormulaBase::metrics(BufferView * bv) const
 152 {
 153         if (bv)
 154                 view_ = bv->owner()->view();
 155         MathMetricsInfo mi;
 156         mi.base.style = LM_ST_TEXT;
 157         mi.base.font  = font_;
 158         mi.base.font.setColor(LColor::math);
 159         par()->metrics(mi);
 160 }
 161
 162
 163 string const InsetFormulaBase::editMessage() const
 164 {
 165         return _("Math editor mode");
 166 }
 167
 168
 169 void InsetFormulaBase::edit(BufferView * bv, int x, int y, mouse_button::state)
 170 {
 171         if (!bv->lockInset(this))
 172                 lyxerr[Debug::MATHED] << "Cannot lock inset!!!" << endl;
 173         releaseMathCursor(bv);
 174         mathcursor = new MathCursor(this, true);
 175         metrics(bv);
 176         mathcursor->setPos(x, y);
 177         //lyxerr << "setting pos to " << x << "," << y << "\n";
 178
 179         // if that is removed, we won't get the magenta box when entering an
 180         // inset for the first time
 181         bv->updateInset(this, false);
 182 }
 183
 184
 185 void InsetFormulaBase::edit(BufferView * bv, bool front)
 186 {
 187         if (!bv->lockInset(this))
 188                 lyxerr << "Cannot lock math inset in edit call!\n";
 189         releaseMathCursor(bv);
 190         mathcursor = new MathCursor(this, front);
 191         metrics(bv);
 192         bv->updateInset(this, false);
 193 }
 194
 195
 196 void InsetFormulaBase::insetUnlock(BufferView * bv)
 197 {
 198         if (mathcursor) {
 199                 if (mathcursor->inMacroMode()) {
 200                         mathcursor->macroModeClose();
 201                         updateLocal(bv, true);
 202                 }
 203                 releaseMathCursor(bv);
 204         }
 205         generatePreview();
 206         bv->updateInset(this, false);
 207 }
 208
 209
 210 void InsetFormulaBase::getCursorPos(BufferView *, int & x, int & y) const
 211 {
 212         // calling metrics here destroys the cached xo,yo positions e.g. in
 213         // MathParboxinset. And it would be too expensive anyway...
 214         //metrics(bv);
 215         if (!mathcursor) {
 216                 lyxerr << "getCursorPos - should not happen";
 217                 x = y = 0;
 218                 return;
 219         }
 220         mathcursor->getPos(x, y);
 221         //x -= xo_;
 222         y -= yo_;
 223         //lyxerr << "getCursorPos: " << x << " " << y << "\n";
 224 }
 225
 226
 227 void InsetFormulaBase::toggleInsetCursor(BufferView * bv)
 228 {
 229         //lyxerr << "toggleInsetCursor: " << isCursorVisible() << "\n";
 230         if (isCursorVisible())
 231                 hideInsetCursor(bv);
 232         else
 233                 showInsetCursor(bv);
 234 }
 235
 236
 237 void InsetFormulaBase::showInsetCursor(BufferView * bv, bool)
 238 {
 239         if (isCursorVisible())
 240                 return;
 241         fitInsetCursor(bv);
 242         int x, y, asc, des;
 243         getCursorPos(bv, x, y);
 244         math_font_max_dim(font_, asc, des);
 245         bv->showLockedInsetCursor(x, y, asc, des);
 246         setCursorVisible(true);
 247         //lyxerr << "showInsetCursor: " << x << " " << y << "\n";
 248 }
 249
 250
 251 void InsetFormulaBase::hideInsetCursor(BufferView * bv)
 252 {
 253         if (!isCursorVisible())
 254                 return;
 255         bv->hideLockedInsetCursor();
 256         setCursorVisible(false);
 257         //lyxerr << "hideInsetCursor: \n";
 258 }
 259
 260
 261 void InsetFormulaBase::fitInsetCursor(BufferView * bv) const
 262 {
 263         if (!mathcursor)
 264                 return;
 265         int x, y, asc, des;
 266         math_font_max_dim(font_, asc, des);
 267         getCursorPos(bv, x, y);
 268         //y += yo_;
 269         //lyxerr << "fitInsetCursor: x: " << x << " y: " << y << " yo: " << yo_ << "\n";
 270         bv->fitLockedInsetCursor(x, y, asc, des);
 271 }
 272
 273
 274 void InsetFormulaBase::toggleInsetSelection(BufferView * bv)
 275 {
 276         if (mathcursor)
 277                 bv->updateInset(this, false);
 278 }
 279
 280
 281 vector<string> const InsetFormulaBase::getLabelList() const
 282 {
 283   return vector<string>();
 284 }
 285
 286
 287 void InsetFormulaBase::updateLocal(BufferView * bv, bool dirty)
 288 {
 289         bv->updateInset(this, dirty);
 290 }
 291
 292
 293 Inset::RESULT InsetFormulaBase::lfunMouseRelease(FuncRequest const & cmd)
 294 {
 295         if (!mathcursor)
 296                 return UNDISPATCHED;
 297
 298         BufferView * bv = cmd.view();
 299         hideInsetCursor(bv);
 300         showInsetCursor(bv);
 301         bv->updateInset(this, false);
 302
 303         if (cmd.button() == mouse_button::button3) {
 304                 // try to dispatch to enclosed insets first
 305                 if (mathcursor->dispatch(cmd) == MathInset::UNDISPATCHED) {
 306                         // launch math panel for right mouse button
 307                         bv->owner()->getDialogs().showMathPanel();
 308                 }
 309                 return DISPATCHED;
 310         }
 311
 312         if (cmd.button() == mouse_button::button1) {
 313                 // try to dispatch to enclosed insets first
 314                 mathcursor->dispatch(cmd);
 315                 // try to set the cursor
 316                 //delete mathcursor;
 317                 //mathcursor = new MathCursor(this, x == 0);
 318                 //metrics(bv);
 319                 //mathcursor->setPos(x + xo_, y + yo_);
 320                 return DISPATCHED;
 321         }
 322         return UNDISPATCHED;
 323 }
 324
 325
 326 Inset::RESULT InsetFormulaBase::lfunMousePress(FuncRequest const & cmd)
 327 {
 328         BufferView * bv = cmd.view();
 329         releaseMathCursor(bv);
 330         mathcursor = new MathCursor(this, cmd.x == 0);
 331
 332         if (cmd.button() == mouse_button::button1) {
 333                 // just set the cursor here
 334                 //lyxerr << "setting cursor\n";
 335                 metrics(bv);
 336                 first_x = cmd.x;
 337                 first_y = cmd.y;
 338                 mathcursor->selClear();
 339                 mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 340                 mathcursor->dispatch(cmd);
 341                 return DISPATCHED;
 342         }
 343         if (cmd.button() == mouse_button::button3) {
 344                 mathcursor->dispatch(cmd);
 345                 //delete mathcursor;
 346                 return DISPATCHED;
 347         }
 348         bv->updateInset(this, false);
 349         return DISPATCHED;
 350 }
 351
 352
 353 Inset::RESULT InsetFormulaBase::lfunMouseMotion(FuncRequest const & cmd)
 354 {
 355         if (!mathcursor)
 356                 return DISPATCHED;
 357
 358         if (mathcursor->dispatch(FuncRequest(cmd)) != MathInset::UNDISPATCHED)
 359                 return DISPATCHED;
 360
 361         if (abs(cmd.x - first_x) < 2 && abs(cmd.y - first_y) < 2) {
 362                 //lyxerr << "insetMotionNotify: ignored\n";
 363                 return DISPATCHED;
 364         }
 365         first_x = cmd.x;
 366         first_y = cmd.y;
 367
 368         if (!mathcursor->selection())
 369                 mathcursor->selStart();
 370
 371         BufferView * bv = cmd.view();
 372         hideInsetCursor(bv);
 373         mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 374         showInsetCursor(bv);
 375         bv->updateInset(this, false);
 376         return DISPATCHED;
 377 }
 378
 379
 380 Inset::RESULT InsetFormulaBase::localDispatch(FuncRequest const & cmd)
 381 {
 382         //lyxerr << "InsetFormulaBase::localDispatch: act: " << cmd.action
 383         //      << " arg: '" << cmd.argument
 384         //      << " x: '" << cmd.x
 385         //      << " y: '" << cmd.y
 386         //      << "' button: " << cmd.button() << "\n";
 387
 388         switch (cmd.action) {
 389                 case LFUN_MOUSE_PRESS:
 390                         return lfunMousePress(cmd);
 391                 case LFUN_MOUSE_MOTION:
 392                         return lfunMouseMotion(cmd);
 393                 case LFUN_MOUSE_RELEASE:
 394                         return lfunMouseRelease(cmd);
 395                 default:
 396                         break;
 397         }
 398
 399         if (!mathcursor)
 400                 return UNDISPATCHED;
 401
 402         BufferView * bv    = cmd.view();
 403         string argument    = cmd.argument;
 404         RESULT result      = DISPATCHED;
 405         bool sel           = false;
 406         bool was_macro     = mathcursor->inMacroMode();
 407         bool was_selection = mathcursor->selection();
 408
 409         hideInsetCursor(bv);
 410
 411         mathcursor->normalize();
 412         mathcursor->touch();
 413
 414         switch (cmd.action) {
 415
 416         case LFUN_MATH_MUTATE:
 417         case LFUN_MATH_DISPLAY:
 418         case LFUN_MATH_NUMBER:
 419         case LFUN_MATH_NONUMBER:
 420         case LFUN_TABINSERT:
 421         case LFUN_BREAKLINE:
 422         case LFUN_DELETE_LINE_FORWARD:
 423         case LFUN_INSERT_LABEL:
 424         case LFUN_MATH_EXTERN:
 425         case LFUN_TABULAR_FEATURE:
 426         case LFUN_PASTESELECTION:
 427                 bv->lockedInsetStoreUndo(Undo::EDIT);
 428                 mathcursor->dispatch(cmd);
 429                 updateLocal(bv, true);
 430                 break;
 431
 432         case LFUN_WORDRIGHTSEL:
 433         case LFUN_RIGHTSEL:
 434                 sel = true; // fall through...
 435         case LFUN_RIGHT:
 436                 result = mathcursor->right(sel) ? DISPATCHED : FINISHED_RIGHT;
 437                 //lyxerr << "calling scroll 20\n";
 438                 //scroll(bv, 20);
 439                 updateLocal(bv, false);
 440                 // write something to the minibuffer
 441                 //bv->owner()->message(mathcursor->info());
 442                 break;
 443
 444         case LFUN_WORDLEFTSEL:
 445         case LFUN_LEFTSEL:
 446                 sel = true; // fall through
 447         case LFUN_LEFT:
 448                 result = mathcursor->left(sel) ? DISPATCHED : FINISHED;
 449                 updateLocal(bv, false);
 450                 break;
 451
 452         case LFUN_UPSEL:
 453                 sel = true; // fall through
 454         case LFUN_UP:
 455                 result = mathcursor->up(sel) ? DISPATCHED : FINISHED_UP;
 456                 updateLocal(bv, false);
 457                 break;
 458
 459         case LFUN_DOWNSEL:
 460                 sel = true; // fall through
 461         case LFUN_DOWN:
 462                 result = mathcursor->down(sel) ? DISPATCHED : FINISHED_DOWN;
 463                 updateLocal(bv, false);
 464                 break;
 465
 466         case LFUN_HOMESEL:
 467                 sel = true; // fall through
 468         case LFUN_HOME:
 469                 result = mathcursor->home(sel) ? DISPATCHED : FINISHED;
 470                 updateLocal(bv, false);
 471                 break;
 472
 473         case LFUN_ENDSEL:
 474                 sel = true; // fall through
 475         case LFUN_END:
 476                 result = mathcursor->end(sel) ? DISPATCHED : FINISHED_RIGHT;
 477                 updateLocal(bv, false);
 478                 break;
 479
 480         case LFUN_PRIORSEL:
 481         case LFUN_PRIOR:
 482                 result = FINISHED_UP;
 483                 updateLocal(bv, false);
 484                 break;
 485
 486         case LFUN_NEXTSEL:
 487         case LFUN_NEXT:
 488                 result = FINISHED_DOWN;
 489                 updateLocal(bv, false);
 490                 break;
 491
 492         case LFUN_TAB:
 493                 mathcursor->idxNext();
 494                 updateLocal(bv, false);
 495                 break;
 496
 497         case LFUN_SHIFT_TAB:
 498                 mathcursor->idxPrev();
 499                 updateLocal(bv, false);
 500                 break;
 501
 502         case LFUN_DELETE_WORD_BACKWARD:
 503         case LFUN_BACKSPACE:
 504                 bv->lockedInsetStoreUndo(Undo::DELETE);
 505                 mathcursor->backspace();
 506                 updateLocal(bv, true);
 507                 break;
 508
 509         case LFUN_DELETE_WORD_FORWARD:
 510         case LFUN_DELETE:
 511                 bv->lockedInsetStoreUndo(Undo::DELETE);
 512                 mathcursor->erase();
 513                 bv->updateInset(this, true);
 514                 break;
 515
 516         //    case LFUN_GETXY:
 517         //      sprintf(dispatch_buffer, "%d %d",);
 518         //      dispatch_result = dispatch_buffer;
 519         //      break;
 520         case LFUN_SETXY: {
 521                 lyxerr << "LFUN_SETXY broken!\n";
 522                 int x = 0;
 523                 int y = 0;
 524                 istringstream is(cmd.argument.c_str());
 525                 is >> x >> y;
 526                 mathcursor->setPos(x, y);
 527                 updateLocal(bv, false);
 528                 break;
 529         }
 530
 531         case LFUN_PASTE:
 532                 if (was_macro)
 533                         mathcursor->macroModeClose();
 534                 bv->lockedInsetStoreUndo(Undo::EDIT);
 535                 mathcursor->selPaste();
 536                 updateLocal(bv, true);
 537                 break;
 538
 539         case LFUN_CUT:
 540                 bv->lockedInsetStoreUndo(Undo::DELETE);
 541                 mathcursor->selCut();
 542                 updateLocal(bv, true);
 543                 break;
 544
 545         case LFUN_COPY:
 546                 mathcursor->selCopy();
 547                 break;
 548
 549
 550         // Special casing for superscript in case of LyX handling
 551         // dead-keys:
 552         case LFUN_CIRCUMFLEX:
 553                 if (cmd.argument.empty()) {
 554                         // do superscript if LyX handles
 555                         // deadkeys
 556                         bv->lockedInsetStoreUndo(Undo::EDIT);
 557                         mathcursor->script(true);
 558                         updateLocal(bv, true);
 559                 }
 560                 break;
 561
 562         case LFUN_UMLAUT:
 563         case LFUN_ACUTE:
 564         case LFUN_GRAVE:
 565         case LFUN_BREVE:
 566         case LFUN_DOT:
 567         case LFUN_MACRON:
 568         case LFUN_CARON:
 569         case LFUN_TILDE:
 570         case LFUN_CEDILLA:
 571         case LFUN_CIRCLE:
 572         case LFUN_UNDERDOT:
 573         case LFUN_TIE:
 574         case LFUN_OGONEK:
 575         case LFUN_HUNG_UMLAUT:
 576                 break;
 577
 578         //  Math fonts
 579         case LFUN_GREEK_TOGGLE: handleFont(bv, cmd.argument, "lyxgreek"); break;
 580         case LFUN_BOLD:         handleFont(bv, cmd.argument, "textbf"); break;
 581         case LFUN_SANS:         handleFont(bv, cmd.argument, "textsf"); break;
 582         case LFUN_EMPH:         handleFont(bv, cmd.argument, "mathcal"); break;
 583         case LFUN_ROMAN:        handleFont(bv, cmd.argument, "mathrm"); break;
 584         case LFUN_CODE:         handleFont(bv, cmd.argument, "texttt"); break;
 585         case LFUN_FRAK:         handleFont(bv, cmd.argument, "mathfrak"); break;
 586         case LFUN_ITAL:         handleFont(bv, cmd.argument, "mathit"); break;
 587         case LFUN_NOUN:         handleFont(bv, cmd.argument, "mathbb"); break;
 588         case LFUN_DEFAULT:      handleFont(bv, cmd.argument, "textnormal"); break;
 589         case LFUN_FREE:         handleFont(bv, cmd.argument, "textrm"); break;
 590
 591         case LFUN_GREEK:
 592                 handleFont(bv, cmd.argument, "lyxgreek1");
 593                 if (cmd.argument.size())
 594                         mathcursor->interpret(cmd.argument);
 595                 break;
 596
 597         case LFUN_MATH_MODE:
 598                 if (mathcursor->currentMode())
 599                         handleFont(bv, cmd.argument, "textrm");
 600                 else {
 601                         mathcursor->niceInsert(MathAtom(new MathHullInset("simple")));
 602                         updateLocal(bv, true);
 603                 }
 604                 //bv->owner()->message(_("math text mode toggled"));
 605                 break;
 606
 607         case LFUN_MATH_LIMITS:
 608                 bv->lockedInsetStoreUndo(Undo::EDIT);
 609                 if (mathcursor->toggleLimits())
 610                         updateLocal(bv, true);
 611                 break;
 612
 613         case LFUN_MATH_SIZE:
 614 #if 0
 615                 if (!arg.empty()) {
 616                         bv->lockedInsetStoreUndo(Undo::EDIT);
 617                         mathcursor->setSize(arg);
 618                         updateLocal(bv, true);
 619                 }
 620 #endif
 621                 break;
 622
 623         case LFUN_INSERT_MATRIX:
 624                 if (!cmd.argument.empty()) {
 625                         bv->lockedInsetStoreUndo(Undo::EDIT);
 626                         mathcursor->interpret("matrix " + cmd.argument);
 627                         updateLocal(bv, true);
 628                 }
 629                 break;
 630
 631         case LFUN_SUPERSCRIPT:
 632         case LFUN_SUBSCRIPT:
 633         {
 634                 bv->lockedInsetStoreUndo(Undo::EDIT);
 635                 mathcursor->script(cmd.action == LFUN_SUPERSCRIPT);
 636                 updateLocal(bv, true);
 637                 break;
 638         }
 639
 640         case LFUN_MATH_DELIM:
 641         {
 642                 //lyxerr << "formulabase::LFUN_MATH_DELIM, arg: '" << arg << "'\n";
 643                 string ls;
 644                 string rs = split(cmd.argument, ls, ' ');
 645                 // Reasonable default values
 646                 if (ls.empty())
 647                         ls = '(';
 648                 if (rs.empty())
 649                         rs = ')';
 650
 651                 bv->lockedInsetStoreUndo(Undo::EDIT);
 652                 mathcursor->handleNest(MathAtom(new MathDelimInset(ls, rs)));
 653                 updateLocal(bv, true);
 654                 break;
 655         }
 656
 657         case LFUN_PROTECTEDSPACE:
 658         case LFUN_MATH_SPACE:
 659                 bv->lockedInsetStoreUndo(Undo::EDIT);
 660                 mathcursor->insert(MathAtom(new MathSpaceInset(",")));
 661                 updateLocal(bv, true);
 662                 break;
 663
 664         case LFUN_UNDO:
 665                 bv->owner()->message(_("Invalid action in math mode!"));
 666                 break;
 667
 668
 669         case LFUN_EXEC_COMMAND:
 670                 result = UNDISPATCHED;
 671                 break;
 672
 673         case LFUN_INSET_ERT:
 674                 // interpret this as if a backslash was typed
 675                 bv->lockedInsetStoreUndo(Undo::EDIT);
 676                 mathcursor->interpret('\\');
 677                 updateLocal(bv, true);
 678                 break;
 679
 680         case LFUN_BREAKPARAGRAPH:
 681         case LFUN_BREAKPARAGRAPHKEEPLAYOUT:
 682         case LFUN_BREAKPARAGRAPH_SKIP:
 683                 argument = "\n";
 684                 // fall through
 685
 686         case -1:
 687         case LFUN_INSERT_MATH:
 688         case LFUN_SELFINSERT:
 689                 if (!argument.empty()) {
 690                         bv->lockedInsetStoreUndo(Undo::EDIT);
 691                         if (argument.size() == 1)
 692                                 result = mathcursor->interpret(argument[0]) ? DISPATCHED : FINISHED_RIGHT;
 693                         else
 694                                 result = mathcursor->interpret(argument) ? DISPATCHED : FINISHED_RIGHT;
 695                         updateLocal(bv, true);
 696                 }
 697                 break;
 698
 699         case LFUN_MATH_PANEL:
 700                 result = UNDISPATCHED;
 701                 break;
 702
 703         case LFUN_ESCAPE:
 704                 if (mathcursor->selection())
 705                         mathcursor->selClear();
 706                 else
 707                         result = UNDISPATCHED;
 708                 break;
 709
 710         case LFUN_INSET_TOGGLE:
 711                 mathcursor->insetToggle();
 712                 updateLocal(bv, true);
 713                 break;
 714
 715         case LFUN_REF_INSERT:
 716                 //if (argument.empty()) {
 717                 //      InsetCommandParams p("ref");
 718                 //      owner_->getDialogs().createRef(p.getAsString());
 719                 //} else {
 720                 //      InsetCommandParams p;
 721                 //      p.setFromString(argument);
 722
 723                 //      InsetRef * inset = new InsetRef(p, *buffer_);
 724                 //      if (!insertInset(inset))
 725                 //              delete inset;
 726                 //      else
 727                 //              updateInset(inset, true);
 728                 //}
 729                 //
 730                 if (cmd.argument.empty()) {
 731                         InsetCommandParams p("ref");
 732                         bv->owner()->getDialogs().createRef(p.getAsString());
 733                 } else {
 734                         //mathcursor->handleNest(new InsetRef2);
 735                         //mathcursor->insert(arg);
 736                         mathcursor->insert(MathAtom(new RefInset(cmd.argument)));
 737                 }
 738                 updateLocal(bv, true);
 739                 break;
 740
 741         default:
 742                 result = UNDISPATCHED;
 743         }
 744
 745         mathcursor->normalize();
 746         mathcursor->touch();
 747
 748         lyx::Assert(mathcursor);
 749
 750         if (mathcursor->selection() || was_selection)
 751                 toggleInsetSelection(bv);
 752
 753         if (result == DISPATCHED || result == DISPATCHED_NOUPDATE ||
 754             result == UNDISPATCHED) {
 755                 fitInsetCursor(bv);
 756                 showInsetCursor(bv);
 757                 revealCodes(bv);
 758         } else {
 759                 releaseMathCursor(bv);
 760                 bv->unlockInset(this);
 761         }
 762
 763         return result;  // original version
 764 }
 765
 766
 767 void InsetFormulaBase::revealCodes(BufferView * bv) const
 768 {
 769         if (!mathcursor)
 770                 return;
 771         bv->owner()->message(mathcursor->info());
 772
 773 #if 0
 774         // write something to the minibuffer
 775         // translate to latex
 776         mathcursor->markInsert();
 777         ostringstream os;
 778         write(NULL, os);
 779         string str = os.str();
 780         mathcursor->markErase();
 781         string::size_type pos = 0;
 782         string res;
 783         for (string::iterator it = str.begin(); it != str.end(); ++it) {
 784                 if (*it == '\n')
 785                         res += ' ';
 786                 else if (*it == '\0') {
 787                         res += "  -X-  ";
 788                         pos = it - str.begin();
 789                 }
 790                 else
 791                         res += *it;
 792         }
 793         if (pos > 30)
 794                 res = res.substr(pos - 30);
 795         if (res.size() > 60)
 796                 res = res.substr(0, 60);
 797         bv->owner()->message(res);
 798 #endif
 799 }
 800
 801
 802 Inset::Code InsetFormulaBase::lyxCode() const
 803 {
 804         return Inset::MATH_CODE;
 805 }
 806
 807
 808 int InsetFormulaBase::ylow() const
 809 {
 810         return yo_ - ascent(view(), font_);
 811 }
 812
 813
 814 int InsetFormulaBase::yhigh() const
 815 {
 816         return yo_ + descent(view(), font_);
 817 }
 818
 819
 820 int InsetFormulaBase::xlow() const
 821 {
 822         return xo_;
 823 }
 824
 825
 826 int InsetFormulaBase::xhigh() const
 827 {
 828         return xo_ + width(view(), font_);
 829 }
 830
 831
 832 /////////////////////////////////////////////////////////////////////
 833
 834
 835 bool InsetFormulaBase::searchForward(BufferView * bv, string const & str,
 836                                      bool, bool)
 837 {
 838 #ifdef WITH_WARNINGS
 839 #warning pretty ugly
 840 #endif
 841         static InsetFormulaBase * lastformula = 0;
 842         static MathIterator current = MathIterator(ibegin(par().nucleus()));
 843         static MathArray ar;
 844         static string laststr;
 845
 846         if (lastformula != this || laststr != str) {
 847                 //lyxerr << "reset lastformula to " << this << "\n";
 848                 lastformula = this;
 849                 laststr = str;
 850                 current = ibegin(par().nucleus());
 851                 ar.clear();
 852                 mathed_parse_cell(ar, str);
 853         } else {
 854                 ++current;
 855         }
 856         //lyxerr << "searching '" << str << "' in " << this << ar << endl;
 857
 858         for (MathIterator it = current; it != iend(par().nucleus()); ++it) {
 859                 if (it.cell().matchpart(ar, it.back().pos_)) {
 860                         bv->unlockInset(bv->theLockingInset());
 861                         if (!bv->lockInset(this)) {
 862                                 lyxerr << "Cannot lock inset" << endl;
 863                                 return false;
 864                         }
 865                         delete mathcursor;
 866                         mathcursor = new MathCursor(this, true);
 867                         metrics(bv);
 868                         mathcursor->setSelection(it, ar.size());
 869                         current = it;
 870                         it.jump(ar.size());
 871                         updateLocal(bv, false);
 872                         return true;
 873                 }
 874         }
 875
 876         //lyxerr << "not found!\n";
 877         lastformula = 0;
 878         return false;
 879 }
 880
 881
 882 bool InsetFormulaBase::searchBackward(BufferView * bv, string const & what,
 883                                       bool a, bool b)
 884 {
 885         lyxerr[Debug::MATHED] << "searching backward not implemented in mathed\n";
 886         return searchForward(bv, what, a, b);
 887 }
 888
 889
 890 bool InsetFormulaBase::display() const
 891 {
 892         return par()->asHullInset() && par()->asHullInset()->display();
 893 }
 894
 895
 896 /////////////////////////////////////////////////////////////////////
 897
 898
 899 void mathDispatchCreation(FuncRequest const & cmd, bool display)
 900 {
 901         BufferView * bv = cmd.view();
 902         // use selection if available..
 903         //string sel;
 904         //if (action == LFUN_MATH_IMPORT_SELECTION)
 905         //      sel = "";
 906         //else
 907
 908         string sel = bv->getLyXText()->selectionAsString(bv->buffer(), false);
 909
 910         if (sel.empty()) {
 911                 InsetFormula * f = new InsetFormula(bv);
 912                 if (openNewInset(bv, f)) {
 913                         bv->theLockingInset()->
 914                                 localDispatch(FuncRequest(bv, LFUN_MATH_MUTATE, "simple"));
 915                         // don't do that also for LFUN_MATH_MODE unless you want end up with
 916                         // always changing to mathrm when opening an inlined inset
 917                         // -- I really hate "LyXfunc overloading"...
 918                         if (display)
 919                                 f->localDispatch(FuncRequest(bv, LFUN_MATH_DISPLAY));
 920                         f->localDispatch(FuncRequest(bv, LFUN_INSERT_MATH, cmd.argument));
 921                 }
 922         } else {
 923                 // create a macro if we see "\\newcommand" somewhere, and an ordinary
 924                 // formula otherwise
 925                 InsetFormulaBase * f;
 926                 if (sel.find("\\newcommand") == string::npos &&
 927                                 sel.find("\\def") == string::npos)
 928                         f = new InsetFormula(sel);
 929                 else
 930                         f = new InsetFormulaMacro(sel);
 931                 bv->getLyXText()->cutSelection(bv);
 932                 openNewInset(bv, f);
 933         }
 934         cmd.message(N_("Math editor mode"));
 935 }
 936
 937
 938 void mathDispatch(FuncRequest const & cmd)
 939 {
 940         BufferView * bv = cmd.view();
 941         if (!bv->available())
 942                 return;
 943
 944         switch (cmd.action) {
 945
 946                 case LFUN_MATH_DISPLAY:
 947                         mathDispatchCreation(cmd, true);
 948                         break;
 949
 950                 case LFUN_MATH_MODE:
 951                         mathDispatchCreation(cmd, false);
 952                         break;
 953
 954                 case LFUN_MATH_IMPORT_SELECTION:
 955                         mathDispatchCreation(cmd, false);
 956                         break;
 957
 958                 case LFUN_MATH_MACRO:
 959                         if (cmd.argument.empty())
 960                                 cmd.errorMessage(N_("Missing argument"));
 961                         else {
 962                                 string s = cmd.argument;
 963                                 string const s1 = token(s, ' ', 1);
 964                                 int const na = s1.empty() ? 0 : lyx::atoi(s1);
 965                                 openNewInset(bv, new InsetFormulaMacro(token(s, ' ', 0), na));
 966                         }
 967                         break;
 968
 969                 case LFUN_GREEK:
 970                 case LFUN_INSERT_MATH:
 971                 case LFUN_INSERT_MATRIX:
 972                 case LFUN_MATH_DELIM: {
 973                         InsetFormula * f = new InsetFormula(bv);
 974                         if (openNewInset(bv, f)) {
 975                                 bv->theLockingInset()->
 976                                         localDispatch(FuncRequest(bv, LFUN_MATH_MUTATE, "simple"));
 977                                 bv->theLockingInset()->localDispatch(cmd);
 978                         }
 979                         break;
 980                 }
 981                 default:
 982                         break;
 983         }
 984 }