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