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 using std::max;
  65
  66 MathCursor * mathcursor = 0;
  67
  68
  69 namespace {
  70
  71 // local global
  72 int first_x;
  73 int first_y;
  74
  75
  76
  77 bool openNewInset(BufferView * bv, UpdatableInset * new_inset)
  78 {
  79         if (!bv->insertInset(new_inset)) {
  80                 delete new_inset;
  81                 return false;
  82         }
  83         new_inset->edit(bv, true);
  84         return true;
  85 }
  86
  87
  88 } // namespace anon
  89
  90
  91
  92 InsetFormulaBase::InsetFormulaBase()
  93         : font_(), xo_(0), yo_(0)
  94 {
  95         // This is needed as long the math parser is not re-entrant
  96         initMath();
  97         //lyxerr << "sizeof MathInset: " << sizeof(MathInset) << "\n";
  98         //lyxerr << "sizeof MathMetricsInfo: " << sizeof(MathMetricsInfo) << "\n";
  99         //lyxerr << "sizeof MathCharInset: " << sizeof(MathCharInset) << "\n";
 100         //lyxerr << "sizeof LyXFont: " << sizeof(LyXFont) << "\n";
 101 }
 102
 103
 104 // simply scrap this function if you want
 105 void InsetFormulaBase::mutateToText()
 106 {
 107 #if 0
 108         // translate to latex
 109         ostringstream os;
 110         latex(NULL, os, false, false);
 111         string str = os.str();
 112
 113         // insert this text
 114         LyXText * lt = view_->getLyXText();
 115         string::const_iterator cit = str.begin();
 116         string::const_iterator end = str.end();
 117         for (; cit != end; ++cit)
 118                 view_->owner()->getIntl()->getTransManager().TranslateAndInsert(*cit, lt);
 119
 120         // remove ourselves
 121         //view_->owner()->dispatch(LFUN_ESCAPE);
 122 #endif
 123 }
 124
 125
 126 void InsetFormulaBase::handleFont
 127         (BufferView * bv, string const & arg, string const & font)
 128 {
 129         // this whole function is a hack and won't work for incremental font
 130         // changes...
 131         bv->lockedInsetStoreUndo(Undo::EDIT);
 132         if (mathcursor->par()->name() == font) {
 133                 mathcursor->handleFont(font);
 134                 updateLocal(bv, true);
 135         } else {
 136                 bool sel = mathcursor->selection();
 137                 if (sel)
 138                         updateLocal(bv, true);
 139                 mathcursor->handleNest(createMathInset(font));
 140                 mathcursor->insert(arg);
 141                 if (!sel)
 142                         updateLocal(bv, false);
 143         }
 144 }
 145
 146
 147 // Check if uses AMS macros
 148 void InsetFormulaBase::validate(LaTeXFeatures &) const
 149 {}
 150
 151
 152 void InsetFormulaBase::metrics(BufferView * bv, LyXFont const & f) const
 153 {
 154         font_ = f;
 155         metrics(bv);
 156 }
 157
 158
 159 void InsetFormulaBase::metrics(BufferView * bv) const
 160 {
 161         if (bv)
 162                 view_ = bv->owner()->view();
 163         MathMetricsInfo mi;
 164         mi.base.style = LM_ST_TEXT;
 165         mi.base.font  = font_;
 166         mi.base.font.setColor(LColor::math);
 167         par()->metrics(mi);
 168 }
 169
 170
 171 string const InsetFormulaBase::editMessage() const
 172 {
 173         return _("Math editor mode");
 174 }
 175
 176
 177 void InsetFormulaBase::edit(BufferView * bv, int x, int y, mouse_button::state)
 178 {
 179         if (!bv->lockInset(this))
 180                 lyxerr[Debug::MATHED] << "Cannot lock inset!!!" << endl;
 181         releaseMathCursor(bv);
 182         mathcursor = new MathCursor(this, true);
 183         metrics(bv);
 184         mathcursor->setPos(x + xo_, y + yo_);
 185         // if that is removed, we won't get the magenta box when entering an
 186         // inset for the first time
 187         bv->updateInset(this, false);
 188 }
 189
 190
 191 void InsetFormulaBase::edit(BufferView * bv, bool front)
 192 {
 193         if (!bv->lockInset(this))
 194                 lyxerr << "Cannot lock math inset in edit call!\n";
 195         releaseMathCursor(bv);
 196         mathcursor = new MathCursor(this, front);
 197         metrics(bv);
 198         bv->updateInset(this, false);
 199 }
 200
 201
 202 void InsetFormulaBase::insetUnlock(BufferView * bv)
 203 {
 204         if (mathcursor) {
 205                 if (mathcursor->inMacroMode()) {
 206                         mathcursor->macroModeClose();
 207                         updateLocal(bv, true);
 208                 }
 209                 releaseMathCursor(bv);
 210         }
 211         generatePreview();
 212         bv->updateInset(this, false);
 213 }
 214
 215
 216 void InsetFormulaBase::getCursorPos(BufferView *, int & x, int & y) const
 217 {
 218         // calling metrics here destroys the cached xo,yo positions e.g. in
 219         // MathParboxinset. And it would be too expensive anyway...
 220         //metrics(bv);
 221         if (!mathcursor) {
 222                 lyxerr << "getCursorPos - should not happen";
 223                 x = y = 0;
 224                 return;
 225         }
 226         mathcursor->getPos(x, y);
 227         x = mathcursor->targetX();
 228         x -= xo_;
 229         y -= yo_;
 230         //lyxerr << "getCursorPos: " << x << " " << y << "\n";
 231 }
 232
 233
 234 void InsetFormulaBase::toggleInsetCursor(BufferView * bv)
 235 {
 236         //lyxerr << "toggleInsetCursor: " << isCursorVisible() << "\n";
 237         if (isCursorVisible())
 238                 hideInsetCursor(bv);
 239         else
 240                 showInsetCursor(bv);
 241 }
 242
 243
 244 void InsetFormulaBase::showInsetCursor(BufferView * bv, bool)
 245 {
 246         if (isCursorVisible())
 247                 return;
 248         fitInsetCursor(bv);
 249         int x, y, asc, des;
 250         mathcursor->getPos(x, y);
 251         math_font_max_dim(font_, asc, des);
 252         bv->showLockedInsetCursor(x, y - yo_, asc, des);
 253         setCursorVisible(true);
 254         //lyxerr << "showInsetCursor: " << x << " " << y << "\n";
 255 }
 256
 257
 258 void InsetFormulaBase::hideInsetCursor(BufferView * bv)
 259 {
 260         if (!isCursorVisible())
 261                 return;
 262         bv->hideLockedInsetCursor();
 263         setCursorVisible(false);
 264         //lyxerr << "hideInsetCursor: \n";
 265 }
 266
 267
 268 void InsetFormulaBase::fitInsetCursor(BufferView * bv) const
 269 {
 270         if (!mathcursor)
 271                 return;
 272         int x, y, asc, des;
 273         math_font_max_dim(font_, asc, des);
 274         getCursorPos(bv, x, y);
 275         //y += yo_;
 276         //lyxerr << "fitInsetCursor: x: " << x << " y: " << y << " yo: " << yo_ << "\n";
 277         bv->fitLockedInsetCursor(x, y, asc, des);
 278 }
 279
 280
 281 void InsetFormulaBase::toggleInsetSelection(BufferView * bv)
 282 {
 283         if (mathcursor)
 284                 bv->updateInset(this, false);
 285 }
 286
 287
 288 vector<string> const InsetFormulaBase::getLabelList() const
 289 {
 290   return vector<string>();
 291 }
 292
 293
 294 void InsetFormulaBase::updateLocal(BufferView * bv, bool dirty)
 295 {
 296         bv->updateInset(this, dirty);
 297 }
 298
 299
 300 Inset::RESULT InsetFormulaBase::lfunMouseRelease(FuncRequest const & cmd)
 301 {
 302         if (!mathcursor)
 303                 return UNDISPATCHED;
 304
 305         BufferView * bv = cmd.view();
 306         hideInsetCursor(bv);
 307         showInsetCursor(bv);
 308         bv->updateInset(this, true);
 309         //lyxerr << "lfunMouseRelease: buttons: " << cmd.button() << "\n";
 310
 311         if (cmd.button() == mouse_button::button3) {
 312                 // try to dispatch to enclosed insets first
 313                 if (mathcursor->dispatch(cmd) == MathInset::UNDISPATCHED) {
 314                         // launch math panel for right mouse button
 315                         bv->owner()->getDialogs().showMathPanel();
 316                 }
 317                 return DISPATCHED;
 318         }
 319
 320         if (cmd.button() == mouse_button::button2) {
 321                 mathcursor->selClear();
 322                 mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 323                 mathcursor->insert(asArray(bv->getClipboard()));
 324                 bv->updateInset(this, true);
 325                 return DISPATCHED;
 326         }
 327
 328         if (cmd.button() == mouse_button::button1) {
 329                 // try to dispatch to enclosed insets first
 330                 mathcursor->dispatch(cmd);
 331                 cmd.view()->stuffClipboard(mathcursor->grabSelection());
 332                 // try to set the cursor
 333                 //delete mathcursor;
 334                 //mathcursor = new MathCursor(this, x == 0);
 335                 //metrics(bv);
 336                 //mathcursor->setPos(x + xo_, y + yo_);
 337                 return DISPATCHED;
 338         }
 339
 340         return UNDISPATCHED;
 341 }
 342
 343
 344 Inset::RESULT InsetFormulaBase::lfunMousePress(FuncRequest const & cmd)
 345 {
 346         BufferView * bv = cmd.view();
 347         releaseMathCursor(bv);
 348         mathcursor = new MathCursor(this, cmd.x == 0);
 349         //lyxerr << "lfunMousePress: buttons: " << cmd.button() << "\n";
 350
 351         if (cmd.button() == mouse_button::button3) {
 352                 mathcursor->dispatch(cmd);
 353                 return DISPATCHED;
 354         }
 355
 356         if (cmd.button() == mouse_button::button1) {
 357                 // just set the cursor here
 358                 //lyxerr << "setting cursor\n";
 359                 metrics(bv);
 360                 first_x = cmd.x;
 361                 first_y = cmd.y;
 362                 mathcursor->selClear();
 363                 mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 364                 mathcursor->dispatch(cmd);
 365                 return DISPATCHED;
 366         }
 367
 368         bv->updateInset(this, false);
 369         return DISPATCHED;
 370 }
 371
 372
 373 Inset::RESULT InsetFormulaBase::lfunMouseMotion(FuncRequest const & cmd)
 374 {
 375         if (!mathcursor)
 376                 return DISPATCHED;
 377
 378         if (mathcursor->dispatch(FuncRequest(cmd)) != MathInset::UNDISPATCHED)
 379                 return DISPATCHED;
 380
 381         // only select with button 1
 382         if (cmd.button() != mouse_button::button1)
 383                 return DISPATCHED;
 384
 385         if (abs(cmd.x - first_x) < 2 && abs(cmd.y - first_y) < 2)
 386                 return DISPATCHED;
 387
 388         first_x = cmd.x;
 389         first_y = cmd.y;
 390
 391         if (!mathcursor->selection())
 392                 mathcursor->selStart();
 393
 394         BufferView * bv = cmd.view();
 395         hideInsetCursor(bv);
 396         mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 397         showInsetCursor(bv);
 398         bv->updateInset(this, false);
 399         return DISPATCHED;
 400 }
 401
 402
 403 Inset::RESULT InsetFormulaBase::localDispatch(FuncRequest const & cmd)
 404 {
 405         //lyxerr << "InsetFormulaBase::localDispatch: act: " << cmd.action
 406         //      << " arg: '" << cmd.argument
 407         //      << " x: '" << cmd.x
 408         //      << " y: '" << cmd.y
 409         //      << "' button: " << cmd.button() << "\n";
 410
 411         switch (cmd.action) {
 412                 case LFUN_MOUSE_PRESS:
 413                         return lfunMousePress(cmd);
 414                 case LFUN_MOUSE_MOTION:
 415                         return lfunMouseMotion(cmd);
 416                 case LFUN_MOUSE_RELEASE:
 417                         return lfunMouseRelease(cmd);
 418                 case LFUN_MOUSE_DOUBLE:
 419                         //lyxerr << "Mouse double\n";
 420                         return localDispatch(FuncRequest(LFUN_WORDSEL));
 421                 default:
 422                         break;
 423         }
 424
 425         if (!mathcursor)
 426                 return UNDISPATCHED;
 427
 428         BufferView * bv    = cmd.view();
 429         string argument    = cmd.argument;
 430         RESULT result      = DISPATCHED;
 431         bool sel           = false;
 432         bool was_macro     = mathcursor->inMacroMode();
 433         bool was_selection = mathcursor->selection();
 434
 435         hideInsetCursor(bv);
 436
 437         mathcursor->normalize();
 438         mathcursor->touch();
 439
 440         switch (cmd.action) {
 441
 442         case LFUN_MATH_MUTATE:
 443         case LFUN_MATH_DISPLAY:
 444         case LFUN_MATH_NUMBER:
 445         case LFUN_MATH_NONUMBER:
 446         case LFUN_TABINSERT:
 447         case LFUN_BREAKLINE:
 448         case LFUN_DELETE_LINE_FORWARD:
 449         case LFUN_INSERT_LABEL:
 450         case LFUN_MATH_EXTERN:
 451         case LFUN_TABULAR_FEATURE:
 452         case LFUN_PASTESELECTION:
 453         case LFUN_MATH_LIMITS:
 454                 bv->lockedInsetStoreUndo(Undo::EDIT);
 455                 mathcursor->dispatch(cmd);
 456                 updateLocal(bv, true);
 457                 break;
 458
 459         case LFUN_RIGHTSEL:
 460                 sel = true; // fall through...
 461         case LFUN_RIGHT:
 462                 result = mathcursor->right(sel) ? DISPATCHED : FINISHED_RIGHT;
 463                 //lyxerr << "calling scroll 20\n";
 464                 //scroll(bv, 20);
 465                 updateLocal(bv, false);
 466                 // write something to the minibuffer
 467                 //bv->owner()->message(mathcursor->info());
 468                 break;
 469
 470         case LFUN_LEFTSEL:
 471                 sel = true; // fall through
 472         case LFUN_LEFT:
 473                 result = mathcursor->left(sel) ? DISPATCHED : FINISHED;
 474                 updateLocal(bv, false);
 475                 break;
 476
 477         case LFUN_UPSEL:
 478                 sel = true; // fall through
 479         case LFUN_UP:
 480                 result = mathcursor->up(sel) ? DISPATCHED : FINISHED_UP;
 481                 updateLocal(bv, false);
 482                 break;
 483
 484         case LFUN_DOWNSEL:
 485                 sel = true; // fall through
 486         case LFUN_DOWN:
 487                 result = mathcursor->down(sel) ? DISPATCHED : FINISHED_DOWN;
 488                 updateLocal(bv, false);
 489                 break;
 490
 491         case LFUN_WORDSEL:
 492                 mathcursor->home(false);
 493                 mathcursor->end(true);
 494                 updateLocal(bv, false);
 495                 break;
 496
 497         case LFUN_HOMESEL:
 498         case LFUN_WORDLEFTSEL:
 499                 sel = true; // fall through
 500         case LFUN_HOME:
 501         case LFUN_WORDLEFT:
 502                 result = mathcursor->home(sel) ? DISPATCHED : FINISHED;
 503                 updateLocal(bv, false);
 504                 break;
 505
 506         case LFUN_ENDSEL:
 507         case LFUN_WORDRIGHTSEL:
 508                 sel = true; // fall through
 509         case LFUN_END:
 510         case LFUN_WORDRIGHT:
 511                 result = mathcursor->end(sel) ? DISPATCHED : FINISHED_RIGHT;
 512                 updateLocal(bv, false);
 513                 break;
 514
 515         case LFUN_PRIORSEL:
 516         case LFUN_PRIOR:
 517         case LFUN_BEGINNINGBUFSEL:
 518         case LFUN_BEGINNINGBUF:
 519                 result = FINISHED_UP;
 520                 updateLocal(bv, false);
 521                 break;
 522
 523         case LFUN_NEXTSEL:
 524         case LFUN_NEXT:
 525         case LFUN_ENDBUFSEL:
 526         case LFUN_ENDBUF:
 527                 result = FINISHED_DOWN;
 528                 updateLocal(bv, false);
 529                 break;
 530
 531         case LFUN_TAB:
 532                 mathcursor->idxNext();
 533                 updateLocal(bv, false);
 534                 break;
 535
 536         case LFUN_SHIFT_TAB:
 537                 mathcursor->idxPrev();
 538                 updateLocal(bv, false);
 539                 break;
 540
 541         case LFUN_DELETE_WORD_BACKWARD:
 542         case LFUN_BACKSPACE:
 543                 bv->lockedInsetStoreUndo(Undo::DELETE);
 544                 mathcursor->backspace();
 545                 updateLocal(bv, true);
 546                 break;
 547
 548         case LFUN_DELETE_WORD_FORWARD:
 549         case LFUN_DELETE:
 550                 bv->lockedInsetStoreUndo(Undo::DELETE);
 551                 mathcursor->erase();
 552                 bv->updateInset(this, true);
 553                 break;
 554
 555         //    case LFUN_GETXY:
 556         //      sprintf(dispatch_buffer, "%d %d",);
 557         //      dispatch_result = dispatch_buffer;
 558         //      break;
 559         case LFUN_SETXY: {
 560                 lyxerr << "LFUN_SETXY broken!\n";
 561                 int x = 0;
 562                 int y = 0;
 563                 istringstream is(cmd.argument.c_str());
 564                 is >> x >> y;
 565                 mathcursor->setPos(x, y);
 566                 updateLocal(bv, false);
 567                 break;
 568         }
 569
 570         case LFUN_PASTE:
 571                 if (was_macro)
 572                         mathcursor->macroModeClose();
 573                 bv->lockedInsetStoreUndo(Undo::EDIT);
 574                 mathcursor->selPaste();
 575                 updateLocal(bv, true);
 576                 break;
 577
 578         case LFUN_CUT:
 579                 bv->lockedInsetStoreUndo(Undo::DELETE);
 580                 mathcursor->selCut();
 581                 updateLocal(bv, true);
 582                 break;
 583
 584         case LFUN_COPY:
 585                 mathcursor->selCopy();
 586                 break;
 587
 588
 589         // Special casing for superscript in case of LyX handling
 590         // dead-keys:
 591         case LFUN_CIRCUMFLEX:
 592                 if (cmd.argument.empty()) {
 593                         // do superscript if LyX handles
 594                         // deadkeys
 595                         bv->lockedInsetStoreUndo(Undo::EDIT);
 596                         mathcursor->script(true);
 597                         updateLocal(bv, true);
 598                 }
 599                 break;
 600
 601         case LFUN_UMLAUT:
 602         case LFUN_ACUTE:
 603         case LFUN_GRAVE:
 604         case LFUN_BREVE:
 605         case LFUN_DOT:
 606         case LFUN_MACRON:
 607         case LFUN_CARON:
 608         case LFUN_TILDE:
 609         case LFUN_CEDILLA:
 610         case LFUN_CIRCLE:
 611         case LFUN_UNDERDOT:
 612         case LFUN_TIE:
 613         case LFUN_OGONEK:
 614         case LFUN_HUNG_UMLAUT:
 615                 break;
 616
 617         //  Math fonts
 618         case LFUN_GREEK_TOGGLE: handleFont(bv, cmd.argument, "lyxgreek"); break;
 619         case LFUN_BOLD:         handleFont(bv, cmd.argument, "mathbf"); break;
 620         case LFUN_SANS:         handleFont(bv, cmd.argument, "mathsf"); break;
 621         case LFUN_EMPH:         handleFont(bv, cmd.argument, "mathcal"); break;
 622         case LFUN_ROMAN:        handleFont(bv, cmd.argument, "mathrm"); break;
 623         case LFUN_CODE:         handleFont(bv, cmd.argument, "texttt"); break;
 624         case LFUN_FRAK:         handleFont(bv, cmd.argument, "mathfrak"); break;
 625         case LFUN_ITAL:         handleFont(bv, cmd.argument, "mathit"); break;
 626         case LFUN_NOUN:         handleFont(bv, cmd.argument, "mathbb"); break;
 627         case LFUN_FREE:         handleFont(bv, cmd.argument, "textrm"); break;
 628         case LFUN_DEFAULT:      handleFont(bv, cmd.argument, "textnormal"); break;
 629
 630         case LFUN_GREEK:
 631                 handleFont(bv, cmd.argument, "lyxgreek1");
 632                 if (cmd.argument.size())
 633                         mathcursor->insert(asArray(cmd.argument));
 634                 break;
 635
 636         case LFUN_MATH_MODE:
 637                 if (mathcursor->currentMode() == MathInset::TEXT_MODE) {
 638                         mathcursor->niceInsert(MathAtom(new MathHullInset("simple")));
 639                         updateLocal(bv, true);
 640                 } else {
 641                         handleFont(bv, cmd.argument, "textrm");
 642                 }
 643                 //bv->owner()->message(_("math text mode toggled"));
 644                 break;
 645
 646         case LFUN_MATH_SIZE:
 647 #if 0
 648                 if (!arg.empty()) {
 649                         bv->lockedInsetStoreUndo(Undo::EDIT);
 650                         mathcursor->setSize(arg);
 651                         updateLocal(bv, true);
 652                 }
 653 #endif
 654                 break;
 655
 656         case LFUN_INSERT_MATRIX: {
 657                 bv->lockedInsetStoreUndo(Undo::EDIT);
 658                 unsigned int m = 1;
 659                 unsigned int n = 1;
 660                 string v_align;
 661                 string h_align;
 662                 istringstream is(argument);
 663                 is >> m >> n >> v_align >> h_align;
 664                 m = max(1u, m);
 665                 n = max(1u, n);
 666                 v_align += 'c';
 667                 mathcursor->niceInsert(
 668                         MathAtom(new MathArrayInset("array", m, n, v_align[0], h_align)));
 669                         updateLocal(bv, true);
 670                 break;
 671         }
 672
 673         case LFUN_SUPERSCRIPT:
 674         case LFUN_SUBSCRIPT:
 675         {
 676                 bv->lockedInsetStoreUndo(Undo::EDIT);
 677                 mathcursor->script(cmd.action == LFUN_SUPERSCRIPT);
 678                 updateLocal(bv, true);
 679                 break;
 680         }
 681
 682         case LFUN_MATH_DELIM:
 683         {
 684                 //lyxerr << "formulabase::LFUN_MATH_DELIM, arg: '" << arg << "'\n";
 685                 string ls;
 686                 string rs = split(cmd.argument, ls, ' ');
 687                 // Reasonable default values
 688                 if (ls.empty())
 689                         ls = '(';
 690                 if (rs.empty())
 691                         rs = ')';
 692
 693                 bv->lockedInsetStoreUndo(Undo::EDIT);
 694                 mathcursor->handleNest(MathAtom(new MathDelimInset(ls, rs)));
 695                 updateLocal(bv, true);
 696                 break;
 697         }
 698
 699         case LFUN_PROTECTEDSPACE:
 700         case LFUN_MATH_SPACE:
 701                 bv->lockedInsetStoreUndo(Undo::EDIT);
 702                 mathcursor->insert(MathAtom(new MathSpaceInset(",")));
 703                 updateLocal(bv, true);
 704                 break;
 705
 706         case LFUN_UNDO:
 707                 bv->owner()->message(_("Invalid action in math mode!"));
 708                 break;
 709
 710
 711         case LFUN_EXEC_COMMAND:
 712                 result = UNDISPATCHED;
 713                 break;
 714
 715         case LFUN_INSET_ERT:
 716                 // interpret this as if a backslash was typed
 717                 bv->lockedInsetStoreUndo(Undo::EDIT);
 718                 mathcursor->interpret('\\');
 719                 updateLocal(bv, true);
 720                 break;
 721
 722         case LFUN_BREAKPARAGRAPH:
 723         case LFUN_BREAKPARAGRAPHKEEPLAYOUT:
 724         case LFUN_BREAKPARAGRAPH_SKIP:
 725                 argument = "\n";
 726                 // fall through
 727
 728 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
 729 // handling such that "self-insert" works on "arbitrary stuff" too, and
 730 // math-insert only handles special math things like "matrix".
 731         case LFUN_INSERT_MATH:
 732                 bv->lockedInsetStoreUndo(Undo::EDIT);
 733                 mathcursor->niceInsert(argument);
 734                 updateLocal(bv, true);
 735                 break;
 736
 737         case -1:
 738         case LFUN_SELFINSERT:
 739                 if (!argument.empty()) {
 740                         bv->lockedInsetStoreUndo(Undo::EDIT);
 741                         if (argument.size() == 1)
 742                                 result = mathcursor->interpret(argument[0]) ? DISPATCHED : FINISHED_RIGHT;
 743                         else
 744                                 mathcursor->insert(asArray(argument));
 745                         updateLocal(bv, true);
 746                 }
 747                 break;
 748
 749         case LFUN_MATH_PANEL:
 750                 result = UNDISPATCHED;
 751                 break;
 752
 753         case LFUN_ESCAPE:
 754                 if (mathcursor->selection())
 755                         mathcursor->selClear();
 756                 else
 757                         result = UNDISPATCHED;
 758                 break;
 759
 760         case LFUN_INSET_TOGGLE:
 761                 mathcursor->insetToggle();
 762                 updateLocal(bv, true);
 763                 break;
 764
 765         case LFUN_REF_INSERT:
 766                 //if (argument.empty()) {
 767                 //      InsetCommandParams p("ref");
 768                 //      owner_->getDialogs().createRef(p.getAsString());
 769                 //} else {
 770                 //      InsetCommandParams p;
 771                 //      p.setFromString(argument);
 772
 773                 //      InsetRef * inset = new InsetRef(p, *buffer_);
 774                 //      if (!insertInset(inset))
 775                 //              delete inset;
 776                 //      else
 777                 //              updateInset(inset, true);
 778                 //}
 779                 //
 780                 if (cmd.argument.empty()) {
 781                         InsetCommandParams p("ref");
 782                         bv->owner()->getDialogs().createRef(p.getAsString());
 783                 } else {
 784                         //mathcursor->handleNest(new InsetRef2);
 785                         //mathcursor->insert(arg);
 786                         mathcursor->insert(MathAtom(new RefInset(cmd.argument)));
 787                 }
 788                 updateLocal(bv, true);
 789                 break;
 790
 791         default:
 792                 result = UNDISPATCHED;
 793         }
 794
 795         mathcursor->normalize();
 796         mathcursor->touch();
 797
 798         lyx::Assert(mathcursor);
 799
 800         if (mathcursor->selection() || was_selection)
 801                 toggleInsetSelection(bv);
 802
 803         if (result == DISPATCHED || result == DISPATCHED_NOUPDATE ||
 804             result == UNDISPATCHED) {
 805                 fitInsetCursor(bv);
 806                 showInsetCursor(bv);
 807                 revealCodes(bv);
 808                 cmd.view()->stuffClipboard(mathcursor->grabSelection());
 809         } else {
 810                 releaseMathCursor(bv);
 811                 bv->unlockInset(this);
 812         }
 813
 814         return result;  // original version
 815 }
 816
 817
 818 void InsetFormulaBase::revealCodes(BufferView * bv) const
 819 {
 820         if (!mathcursor)
 821                 return;
 822         bv->owner()->message(mathcursor->info());
 823
 824 #if 0
 825         // write something to the minibuffer
 826         // translate to latex
 827         mathcursor->markInsert();
 828         ostringstream os;
 829         write(NULL, os);
 830         string str = os.str();
 831         mathcursor->markErase();
 832         string::size_type pos = 0;
 833         string res;
 834         for (string::iterator it = str.begin(); it != str.end(); ++it) {
 835                 if (*it == '\n')
 836                         res += ' ';
 837                 else if (*it == '\0') {
 838                         res += "  -X-  ";
 839                         pos = it - str.begin();
 840                 }
 841                 else
 842                         res += *it;
 843         }
 844         if (pos > 30)
 845                 res = res.substr(pos - 30);
 846         if (res.size() > 60)
 847                 res = res.substr(0, 60);
 848         bv->owner()->message(res);
 849 #endif
 850 }
 851
 852
 853 Inset::Code InsetFormulaBase::lyxCode() const
 854 {
 855         return Inset::MATH_CODE;
 856 }
 857
 858
 859 int InsetFormulaBase::ylow() const
 860 {
 861         return yo_ - ascent(view(), font_);
 862 }
 863
 864
 865 int InsetFormulaBase::yhigh() const
 866 {
 867         return yo_ + descent(view(), font_);
 868 }
 869
 870
 871 int InsetFormulaBase::xlow() const
 872 {
 873         return xo_;
 874 }
 875
 876
 877 int InsetFormulaBase::xhigh() const
 878 {
 879         return xo_ + width(view(), font_);
 880 }
 881
 882
 883 /////////////////////////////////////////////////////////////////////
 884
 885
 886 bool InsetFormulaBase::searchForward(BufferView * bv, string const & str,
 887                                      bool, bool)
 888 {
 889 #ifdef WITH_WARNINGS
 890 #warning pretty ugly
 891 #endif
 892         static InsetFormulaBase * lastformula = 0;
 893         static MathIterator current = MathIterator(ibegin(par().nucleus()));
 894         static MathArray ar;
 895         static string laststr;
 896
 897         if (lastformula != this || laststr != str) {
 898                 //lyxerr << "reset lastformula to " << this << "\n";
 899                 lastformula = this;
 900                 laststr = str;
 901                 current = ibegin(par().nucleus());
 902                 ar.clear();
 903                 mathed_parse_cell(ar, str);
 904         } else {
 905                 ++current;
 906         }
 907         //lyxerr << "searching '" << str << "' in " << this << ar << endl;
 908
 909         for (MathIterator it = current; it != iend(par().nucleus()); ++it) {
 910                 if (it.cell().matchpart(ar, it.back().pos_)) {
 911                         bv->unlockInset(bv->theLockingInset());
 912                         if (!bv->lockInset(this)) {
 913                                 lyxerr << "Cannot lock inset" << endl;
 914                                 return false;
 915                         }
 916                         delete mathcursor;
 917                         mathcursor = new MathCursor(this, true);
 918                         metrics(bv);
 919                         mathcursor->setSelection(it, ar.size());
 920                         current = it;
 921                         it.jump(ar.size());
 922                         updateLocal(bv, false);
 923                         return true;
 924                 }
 925         }
 926
 927         //lyxerr << "not found!\n";
 928         lastformula = 0;
 929         return false;
 930 }
 931
 932
 933 bool InsetFormulaBase::searchBackward(BufferView * bv, string const & what,
 934                                       bool a, bool b)
 935 {
 936         lyxerr[Debug::MATHED] << "searching backward not implemented in mathed\n";
 937         return searchForward(bv, what, a, b);
 938 }
 939
 940
 941 bool InsetFormulaBase::display() const
 942 {
 943         return par()->asHullInset() && par()->asHullInset()->display();
 944 }
 945
 946
 947 string InsetFormulaBase::selectionAsString() const
 948 {
 949         return mathcursor ? mathcursor->grabSelection() : string();
 950 }
 951
 952 /////////////////////////////////////////////////////////////////////
 953
 954
 955 void mathDispatchCreation(FuncRequest const & cmd, bool display)
 956 {
 957         BufferView * bv = cmd.view();
 958         // use selection if available..
 959         //string sel;
 960         //if (action == LFUN_MATH_IMPORT_SELECTION)
 961         //      sel = "";
 962         //else
 963
 964         string sel = bv->getLyXText()->selectionAsString(bv->buffer(), false);
 965
 966         if (sel.empty()) {
 967                 InsetFormula * f = new InsetFormula(bv);
 968                 if (openNewInset(bv, f)) {
 969                         bv->theLockingInset()->
 970                                 localDispatch(FuncRequest(bv, LFUN_MATH_MUTATE, "simple"));
 971                         // don't do that also for LFUN_MATH_MODE unless you want end up with
 972                         // always changing to mathrm when opening an inlined inset
 973                         // -- I really hate "LyXfunc overloading"...
 974                         if (display)
 975                                 f->localDispatch(FuncRequest(bv, LFUN_MATH_DISPLAY));
 976                         f->localDispatch(FuncRequest(bv, LFUN_INSERT_MATH, cmd.argument));
 977                 }
 978         } else {
 979                 // create a macro if we see "\\newcommand" somewhere, and an ordinary
 980                 // formula otherwise
 981                 InsetFormulaBase * f;
 982                 if (sel.find("\\newcommand") == string::npos &&
 983                                 sel.find("\\def") == string::npos)
 984                         f = new InsetFormula(sel);
 985                 else
 986                         f = new InsetFormulaMacro(sel);
 987                 bv->getLyXText()->cutSelection(bv);
 988                 openNewInset(bv, f);
 989         }
 990         cmd.message(N_("Math editor mode"));
 991 }
 992
 993
 994 void mathDispatch(FuncRequest const & cmd)
 995 {
 996         BufferView * bv = cmd.view();
 997         if (!bv->available())
 998                 return;
 999
1000         switch (cmd.action) {
1001
1002                 case LFUN_MATH_DISPLAY:
1003                         mathDispatchCreation(cmd, true);
1004                         break;
1005
1006                 case LFUN_MATH_MODE:
1007                         mathDispatchCreation(cmd, false);
1008                         break;
1009
1010                 case LFUN_MATH_IMPORT_SELECTION:
1011                         mathDispatchCreation(cmd, false);
1012                         break;
1013
1014                 case LFUN_MATH_MACRO:
1015                         if (cmd.argument.empty())
1016                                 cmd.errorMessage(N_("Missing argument"));
1017                         else {
1018                                 string s = cmd.argument;
1019                                 string const s1 = token(s, ' ', 1);
1020                                 int const na = s1.empty() ? 0 : lyx::atoi(s1);
1021                                 openNewInset(bv, new InsetFormulaMacro(token(s, ' ', 0), na));
1022                         }
1023                         break;
1024
1025                 case LFUN_GREEK:
1026                 case LFUN_INSERT_MATH:
1027                 case LFUN_INSERT_MATRIX:
1028                 case LFUN_MATH_DELIM: {
1029                         InsetFormula * f = new InsetFormula(bv);
1030                         if (openNewInset(bv, f)) {
1031                                 bv->theLockingInset()->
1032                                         localDispatch(FuncRequest(bv, LFUN_MATH_MUTATE, "simple"));
1033                                 bv->theLockingInset()->localDispatch(cmd);
1034                         }
1035                         break;
1036                 }
1037                 default:
1038                         break;
1039         }
1040 }