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
  17 #include "Lsstream.h"
  18 #include "support/LAssert.h"
  19 #include "formula.h"
  20 #include "formulamacro.h"
  21 #include "lyxrc.h"
  22 #include "funcrequest.h"
  23 #include "BufferView.h"
  24 #include "lyxtext.h"
  25 #include "gettext.h"
  26 #include "LaTeXFeatures.h"
  27 #include "debug.h"
  28 #include "math_support.h"
  29 #include "metricsinfo.h"
  30 #include "math_data.h"
  31 #include "support/lstrings.h"
  32 #include "support/lyxlib.h"
  33 #include "frontends/LyXView.h"
  34 #include "frontends/font_metrics.h"
  35 #include "frontends/mouse_state.h"
  36 #include "math_arrayinset.h"
  37 #include "math_charinset.h"
  38 #include "math_deliminset.h"
  39 #include "math_cursor.h"
  40 #include "math_factory.h"
  41 #include "math_fontinset.h"
  42 #include "math_hullinset.h"
  43 #include "math_iterator.h"
  44 #include "math_macrotable.h"
  45 #include "math_parser.h"
  46 #include "math_pos.h"
  47 #include "math_spaceinset.h"
  48 #include "undo_funcs.h"
  49 #include "textpainter.h"
  50 #include "frontends/Dialogs.h"
  51 #include "intl.h"
  52 #include "ref_inset.h"
  53
  54 #include <fstream>
  55
  56 using namespace lyx::support;
  57
  58 using std::endl;
  59 using std::ostream;
  60 using std::vector;
  61 using std::abs;
  62 using std::max;
  63
  64
  65 MathCursor * mathcursor = 0;
  66
  67 namespace {
  68
  69 // local global
  70 int first_x;
  71 int first_y;
  72
  73 bool openNewInset(BufferView * bv, UpdatableInset * new_inset)
  74 {
  75         if (!bv->insertInset(new_inset)) {
  76                 delete new_inset;
  77                 return false;
  78         }
  79         new_inset->localDispatch(FuncRequest(bv, LFUN_INSET_EDIT, "left"));
  80         return true;
  81 }
  82
  83
  84 } // namespace anon
  85
  86
  87
  88 InsetFormulaBase::InsetFormulaBase()
  89         : xo_(0), yo_(0)
  90 {
  91         // This is needed as long the math parser is not re-entrant
  92         initMath();
  93         //lyxerr << "sizeof MathInset: " << sizeof(MathInset) << "\n";
  94         //lyxerr << "sizeof MetricsInfo: " << sizeof(MetricsInfo) << "\n";
  95         //lyxerr << "sizeof MathCharInset: " << sizeof(MathCharInset) << "\n";
  96         //lyxerr << "sizeof LyXFont: " << sizeof(LyXFont) << "\n";
  97 }
  98
  99
 100 // simply scrap this function if you want
 101 void InsetFormulaBase::mutateToText()
 102 {
 103 #if 0
 104         // translate to latex
 105         ostringstream os;
 106         latex(NULL, os, false, false);
 107         string str = os.str();
 108
 109         // insert this text
 110         LyXText * lt = view_->getLyXText();
 111         string::const_iterator cit = str.begin();
 112         string::const_iterator end = str.end();
 113         for (; cit != end; ++cit)
 114                 view_->owner()->getIntl()->getTransManager().TranslateAndInsert(*cit, lt);
 115
 116         // remove ourselves
 117         //view_->owner()->dispatch(LFUN_ESCAPE);
 118 #endif
 119 }
 120
 121
 122 void InsetFormulaBase::handleFont
 123         (BufferView * bv, string const & arg, string const & font)
 124 {
 125         // this whole function is a hack and won't work for incremental font
 126         // changes...
 127         recordUndo(bv, Undo::ATOMIC);
 128
 129         if (mathcursor->inset()->name() == font)
 130                 mathcursor->handleFont(font);
 131         else {
 132                 mathcursor->handleNest(createMathInset(font));
 133                 mathcursor->insert(arg);
 134         }
 135 }
 136
 137
 138 BufferView * InsetFormulaBase::view() const
 139 {
 140         return view_;
 141 }
 142
 143
 144 void InsetFormulaBase::validate(LaTeXFeatures &) const
 145 {}
 146
 147
 148 string const InsetFormulaBase::editMessage() const
 149 {
 150         return _("Math editor mode");
 151 }
 152
 153
 154 void InsetFormulaBase::insetUnlock(BufferView * bv)
 155 {
 156         if (mathcursor) {
 157                 if (mathcursor->inMacroMode()) {
 158                         mathcursor->macroModeClose();
 159                         bv->updateInset(this);
 160                 }
 161                 releaseMathCursor(bv);
 162         }
 163         generatePreview();
 164         bv->updateInset(this);
 165 }
 166
 167
 168 void InsetFormulaBase::getCursor(BufferView &, int & x, int & y) const
 169 {
 170         mathcursor->getPos(x, y);
 171 }
 172
 173
 174 void InsetFormulaBase::getCursorPos(BufferView *, int & x, int & y) const
 175 {
 176         // calling metrics here destroys the cached xo,yo positions e.g. in
 177         // MathParboxinset. And it would be too expensive anyway...
 178         //metrics(bv);
 179         if (!mathcursor) {
 180                 lyxerr << "getCursorPos - should not happen";
 181                 x = y = 0;
 182                 return;
 183         }
 184         mathcursor->getPos(x, y);
 185         x = mathcursor->targetX();
 186         x -= xo_;
 187         y -= yo_;
 188         //lyxerr << "getCursorPos: " << x << ' ' << y << endl;
 189 }
 190
 191
 192 void InsetFormulaBase::fitInsetCursor(BufferView * bv) const
 193 {
 194         if (!mathcursor)
 195                 return;
 196         int x, y, asc, des;
 197         asc = 10;
 198         des = 2;
 199         //math_font_max_dim(font_, asc, des);
 200         getCursorPos(bv, x, y);
 201         //y += yo_;
 202         //lyxerr << "fitInsetCursor: x: " << x << " y: " << y << " yo: " << yo_ << endl;
 203         bv->fitLockedInsetCursor(x, y, asc, des);
 204 }
 205
 206
 207 void InsetFormulaBase::toggleInsetSelection(BufferView * bv)
 208 {
 209         if (mathcursor)
 210                 bv->updateInset(this);
 211 }
 212
 213
 214 vector<string> const InsetFormulaBase::getLabelList() const
 215 {
 216   return vector<string>();
 217 }
 218
 219
 220 dispatch_result InsetFormulaBase::lfunMouseRelease(FuncRequest const & cmd)
 221 {
 222         if (!mathcursor)
 223                 return UNDISPATCHED;
 224
 225         BufferView * bv = cmd.view();
 226         bv->updateInset(this);
 227         //lyxerr << "lfunMouseRelease: buttons: " << cmd.button() << endl;
 228
 229         if (cmd.button() == mouse_button::button3) {
 230                 // try to dispatch to enclosed insets first
 231                 if (mathcursor->dispatch(cmd) == UNDISPATCHED) {
 232                         // launch math panel for right mouse button
 233                         lyxerr << "lfunMouseRelease: undispatched: " << cmd.button() << endl;
 234                         bv->owner()->getDialogs().show("mathpanel");
 235                 }
 236                 return DISPATCHED;
 237         }
 238
 239         if (cmd.button() == mouse_button::button2) {
 240                 MathArray ar;
 241                 asArray(bv->getClipboard(), ar);
 242                 mathcursor->selClear();
 243                 mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 244                 mathcursor->insert(ar);
 245                 bv->updateInset(this);
 246                 return DISPATCHED;
 247         }
 248
 249         if (cmd.button() == mouse_button::button1) {
 250                 // try to dispatch to enclosed insets first
 251                 mathcursor->dispatch(cmd);
 252                 cmd.view()->stuffClipboard(mathcursor->grabSelection());
 253                 // try to set the cursor
 254                 //delete mathcursor;
 255                 //mathcursor = new MathCursor(this, x == 0);
 256                 //metrics(bv);
 257                 //mathcursor->setPos(x + xo_, y + yo_);
 258                 return DISPATCHED;
 259         }
 260
 261         return UNDISPATCHED;
 262 }
 263
 264
 265 dispatch_result InsetFormulaBase::lfunMousePress(FuncRequest const & cmd)
 266 {
 267         BufferView * bv = cmd.view();
 268         //lyxerr << "lfunMousePress: buttons: " << cmd.button() << endl;
 269
 270         if (!mathcursor || mathcursor->formula() != this) {
 271                 lyxerr[Debug::MATHED] << "re-create cursor" << endl;
 272                 releaseMathCursor(bv);
 273                 mathcursor = new MathCursor(this, cmd.x == 0);
 274                 //metrics(bv);
 275                 mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 276         }
 277
 278         if (cmd.button() == mouse_button::button3) {
 279                 mathcursor->dispatch(cmd);
 280                 return DISPATCHED;
 281         }
 282
 283         if (cmd.button() == mouse_button::button1) {
 284                 first_x = cmd.x;
 285                 first_y = cmd.y;
 286                 mathcursor->selClear();
 287                 mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 288                 mathcursor->dispatch(cmd);
 289                 return DISPATCHED;
 290         }
 291
 292         bv->updateInset(this);
 293         return DISPATCHED;
 294 }
 295
 296
 297 dispatch_result InsetFormulaBase::lfunMouseMotion(FuncRequest const & cmd)
 298 {
 299         if (!mathcursor)
 300                 return DISPATCHED;
 301
 302         if (mathcursor->dispatch(FuncRequest(cmd)) != UNDISPATCHED)
 303                 return DISPATCHED;
 304
 305         // only select with button 1
 306         if (cmd.button() != mouse_button::button1)
 307                 return DISPATCHED;
 308
 309         if (abs(cmd.x - first_x) < 2 && abs(cmd.y - first_y) < 2)
 310                 return DISPATCHED;
 311
 312         first_x = cmd.x;
 313         first_y = cmd.y;
 314
 315         if (!mathcursor->selection())
 316                 mathcursor->selStart();
 317
 318         BufferView * bv = cmd.view();
 319         mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 320         bv->updateInset(this);
 321         return DISPATCHED;
 322 }
 323
 324
 325 dispatch_result InsetFormulaBase::localDispatch(FuncRequest const & cmd)
 326 {
 327         //lyxerr << "InsetFormulaBase::localDispatch: act: " << cmd.action
 328         //      << " arg: '" << cmd.argument
 329         //      << " x: '" << cmd.x
 330         //      << " y: '" << cmd.y
 331         //      << "' button: " << cmd.button() << endl;
 332
 333         BufferView * bv = cmd.view();
 334
 335         // delete empty mathbox (LFUN_BACKSPACE and LFUN_DELETE)
 336         bool remove_inset = false;
 337
 338         switch (cmd.action) {
 339                 case LFUN_INSET_EDIT:
 340                         lyxerr << "Called EDIT with '" << cmd.argument << "'\n";
 341                         if (!bv->lockInset(this))
 342                                 lyxerr << "Cannot lock math inset in edit call!\n";
 343                         releaseMathCursor(bv);
 344                         if (!cmd.argument.empty()) {
 345                                 mathcursor = new MathCursor(this, cmd.argument == "left");
 346                                 //metrics(bv);
 347                         } else {
 348                                 mathcursor = new MathCursor(this, true);
 349                                 //metrics(bv);
 350                                 mathcursor->setPos(cmd.x + xo_, cmd.y + yo_);
 351                         }
 352                         // if that is removed, we won't get the magenta box when entering an
 353                         // inset for the first time
 354                         bv->updateInset(this);
 355                         return DISPATCHED;
 356
 357                 case LFUN_MOUSE_PRESS:
 358                         //lyxerr << "Mouse single press\n";
 359                         return lfunMousePress(cmd);
 360                 case LFUN_MOUSE_MOTION:
 361                         //lyxerr << "Mouse motion\n";
 362                         return lfunMouseMotion(cmd);
 363                 case LFUN_MOUSE_RELEASE:
 364                         //lyxerr << "Mouse single release\n";
 365                         return lfunMouseRelease(cmd);
 366                 case LFUN_MOUSE_DOUBLE:
 367                         //lyxerr << "Mouse double\n";
 368                         return localDispatch(FuncRequest(LFUN_WORDSEL));
 369                 default:
 370                         break;
 371         }
 372
 373         if (!mathcursor)
 374                 return UNDISPATCHED;
 375
 376         string argument    = cmd.argument;
 377         RESULT result      = DISPATCHED;
 378         bool sel           = false;
 379         bool was_macro     = mathcursor->inMacroMode();
 380         bool was_selection = mathcursor->selection();
 381
 382         mathcursor->normalize();
 383         mathcursor->touch();
 384
 385         switch (cmd.action) {
 386
 387         case LFUN_MATH_MUTATE:
 388         case LFUN_MATH_DISPLAY:
 389         case LFUN_MATH_NUMBER:
 390         case LFUN_MATH_NONUMBER:
 391         case LFUN_CELL_SPLIT:
 392         case LFUN_BREAKLINE:
 393         case LFUN_DELETE_LINE_FORWARD:
 394         case LFUN_INSERT_LABEL:
 395         case LFUN_MATH_EXTERN:
 396         case LFUN_TABULAR_FEATURE:
 397         case LFUN_PASTESELECTION:
 398         case LFUN_MATH_LIMITS:
 399                 recordUndo(bv, Undo::ATOMIC);
 400                 mathcursor->dispatch(cmd);
 401                 break;
 402
 403         case LFUN_RIGHTSEL:
 404                 sel = true; // fall through...
 405         case LFUN_RIGHT:
 406                 result = mathcursor->right(sel) ? DISPATCHED : FINISHED_RIGHT;
 407                 //lyxerr << "calling scroll 20\n";
 408                 //scroll(bv, 20);
 409                 // write something to the minibuffer
 410                 //bv->owner()->message(mathcursor->info());
 411                 break;
 412
 413         case LFUN_LEFTSEL:
 414                 sel = true; // fall through
 415         case LFUN_LEFT:
 416                 result = mathcursor->left(sel) ? DISPATCHED : FINISHED;
 417                 break;
 418
 419         case LFUN_UPSEL:
 420                 sel = true; // fall through
 421         case LFUN_UP:
 422                 result = mathcursor->up(sel) ? DISPATCHED : FINISHED_UP;
 423                 break;
 424
 425         case LFUN_DOWNSEL:
 426                 sel = true; // fall through
 427         case LFUN_DOWN:
 428                 result = mathcursor->down(sel) ? DISPATCHED : FINISHED_DOWN;
 429                 break;
 430
 431         case LFUN_WORDSEL:
 432                 mathcursor->home(false);
 433                 mathcursor->end(true);
 434                 break;
 435
 436         case LFUN_UP_PARAGRAPHSEL:
 437         case LFUN_UP_PARAGRAPH:
 438         case LFUN_DOWN_PARAGRAPHSEL:
 439         case LFUN_DOWN_PARAGRAPH:
 440                 result = FINISHED;
 441                 break;
 442
 443         case LFUN_HOMESEL:
 444         case LFUN_WORDLEFTSEL:
 445                 sel = true; // fall through
 446         case LFUN_HOME:
 447         case LFUN_WORDLEFT:
 448                 result = mathcursor->home(sel) ? DISPATCHED : FINISHED;
 449                 break;
 450
 451         case LFUN_ENDSEL:
 452         case LFUN_WORDRIGHTSEL:
 453                 sel = true; // fall through
 454         case LFUN_END:
 455         case LFUN_WORDRIGHT:
 456                 result = mathcursor->end(sel) ? DISPATCHED : FINISHED_RIGHT;
 457                 break;
 458
 459         case LFUN_PRIORSEL:
 460         case LFUN_PRIOR:
 461         case LFUN_BEGINNINGBUFSEL:
 462         case LFUN_BEGINNINGBUF:
 463                 result = FINISHED;
 464                 break;
 465
 466         case LFUN_NEXTSEL:
 467         case LFUN_NEXT:
 468         case LFUN_ENDBUFSEL:
 469         case LFUN_ENDBUF:
 470                 result = FINISHED_RIGHT;
 471                 break;
 472
 473         case LFUN_CELL_FORWARD:
 474                 mathcursor->idxNext();
 475                 break;
 476
 477         case LFUN_CELL_BACKWARD:
 478                 mathcursor->idxPrev();
 479                 break;
 480
 481         case LFUN_DELETE_WORD_BACKWARD:
 482         case LFUN_BACKSPACE:
 483                 recordUndo(bv, Undo::ATOMIC);
 484                 if (!mathcursor->backspace()) {
 485                         result = FINISHED;
 486                         remove_inset = true;
 487                 }
 488                 break;
 489
 490         case LFUN_DELETE_WORD_FORWARD:
 491         case LFUN_DELETE:
 492                 recordUndo(bv, Undo::ATOMIC);
 493                 if (!mathcursor->erase()) {
 494                         result = FINISHED;
 495                         remove_inset = true;
 496                 }
 497                 break;
 498
 499         //    case LFUN_GETXY:
 500         //      sprintf(dispatch_buffer, "%d %d",);
 501         //      dispatch_result = dispatch_buffer;
 502         //      break;
 503         case LFUN_SETXY: {
 504                 lyxerr << "LFUN_SETXY broken!\n";
 505                 int x = 0;
 506                 int y = 0;
 507                 istringstream is(cmd.argument.c_str());
 508                 is >> x >> y;
 509                 mathcursor->setPos(x, y);
 510                 break;
 511         }
 512
 513         case LFUN_PASTE: {
 514                 size_t n = 0;
 515                 istringstream is(cmd.argument.c_str());
 516                 is >> n;
 517                 if (was_macro)
 518                         mathcursor->macroModeClose();
 519                 recordUndo(bv, Undo::ATOMIC);
 520                 mathcursor->selPaste(n);
 521                 break;
 522         }
 523
 524         case LFUN_CUT:
 525                 recordUndo(bv, Undo::DELETE);
 526                 mathcursor->selCut();
 527                 break;
 528
 529         case LFUN_COPY:
 530                 mathcursor->selCopy();
 531                 break;
 532
 533
 534         // Special casing for superscript in case of LyX handling
 535         // dead-keys:
 536         case LFUN_CIRCUMFLEX:
 537                 if (cmd.argument.empty()) {
 538                         // do superscript if LyX handles
 539                         // deadkeys
 540                         recordUndo(bv, Undo::ATOMIC);
 541                         mathcursor->script(true);
 542                 }
 543                 break;
 544
 545         case LFUN_UMLAUT:
 546         case LFUN_ACUTE:
 547         case LFUN_GRAVE:
 548         case LFUN_BREVE:
 549         case LFUN_DOT:
 550         case LFUN_MACRON:
 551         case LFUN_CARON:
 552         case LFUN_TILDE:
 553         case LFUN_CEDILLA:
 554         case LFUN_CIRCLE:
 555         case LFUN_UNDERDOT:
 556         case LFUN_TIE:
 557         case LFUN_OGONEK:
 558         case LFUN_HUNG_UMLAUT:
 559                 break;
 560
 561         //  Math fonts
 562         case LFUN_BOLD:         handleFont(bv, cmd.argument, "mathbf"); break;
 563         case LFUN_SANS:         handleFont(bv, cmd.argument, "mathsf"); break;
 564         case LFUN_EMPH:         handleFont(bv, cmd.argument, "mathcal"); break;
 565         case LFUN_ROMAN:        handleFont(bv, cmd.argument, "mathrm"); break;
 566         case LFUN_CODE:         handleFont(bv, cmd.argument, "texttt"); break;
 567         case LFUN_FRAK:         handleFont(bv, cmd.argument, "mathfrak"); break;
 568         case LFUN_ITAL:         handleFont(bv, cmd.argument, "mathit"); break;
 569         case LFUN_NOUN:         handleFont(bv, cmd.argument, "mathbb"); break;
 570         case LFUN_FREEFONT_APPLY:  handleFont(bv, cmd.argument, "textrm"); break;
 571         case LFUN_DEFAULT:      handleFont(bv, cmd.argument, "textnormal"); break;
 572
 573         case LFUN_MATH_MODE:
 574                 if (mathcursor->currentMode() == MathInset::TEXT_MODE)
 575                         mathcursor->niceInsert(MathAtom(new MathHullInset("simple")));
 576                 else
 577                         handleFont(bv, cmd.argument, "textrm");
 578                 //bv->owner()->message(_("math text mode toggled"));
 579                 break;
 580
 581         case LFUN_MATH_SIZE:
 582 #if 0
 583                 if (!arg.empty()) {
 584                         recordUndo(bv, Undo::ATOMIC);
 585                         mathcursor->setSize(arg);
 586                 }
 587 #endif
 588                 break;
 589
 590         case LFUN_INSERT_MATRIX: {
 591                 recordUndo(bv, Undo::ATOMIC);
 592                 unsigned int m = 1;
 593                 unsigned int n = 1;
 594                 string v_align;
 595                 string h_align;
 596                 istringstream is(STRCONV(argument));
 597                 is >> m >> n >> v_align >> h_align;
 598                 m = max(1u, m);
 599                 n = max(1u, n);
 600                 v_align += 'c';
 601                 mathcursor->niceInsert(
 602                         MathAtom(new MathArrayInset("array", m, n, v_align[0], h_align)));
 603                 break;
 604         }
 605
 606         case LFUN_SUPERSCRIPT:
 607         case LFUN_SUBSCRIPT:
 608         {
 609                 recordUndo(bv, Undo::ATOMIC);
 610                 mathcursor->script(cmd.action == LFUN_SUPERSCRIPT);
 611                 break;
 612         }
 613
 614         case LFUN_MATH_DELIM:
 615         {
 616                 //lyxerr << "formulabase::LFUN_MATH_DELIM, arg: '" << arg << "'\n";
 617                 string ls;
 618                 string rs = split(cmd.argument, ls, ' ');
 619                 // Reasonable default values
 620                 if (ls.empty())
 621                         ls = '(';
 622                 if (rs.empty())
 623                         rs = ')';
 624
 625                 recordUndo(bv, Undo::ATOMIC);
 626                 mathcursor->handleNest(MathAtom(new MathDelimInset(ls, rs)));
 627                 break;
 628         }
 629
 630         case LFUN_SPACE_INSERT:
 631         case LFUN_MATH_SPACE:
 632                 recordUndo(bv, Undo::ATOMIC);
 633                 mathcursor->insert(MathAtom(new MathSpaceInset(",")));
 634                 break;
 635
 636         case LFUN_UNDO:
 637                 bv->owner()->message(_("Invalid action in math mode!"));
 638                 break;
 639
 640
 641         case LFUN_EXEC_COMMAND:
 642                 result = UNDISPATCHED;
 643                 break;
 644
 645         case LFUN_INSET_ERT:
 646                 // interpret this as if a backslash was typed
 647                 recordUndo(bv, Undo::ATOMIC);
 648                 mathcursor->interpret('\\');
 649                 break;
 650
 651         case LFUN_BREAKPARAGRAPH:
 652         case LFUN_BREAKPARAGRAPHKEEPLAYOUT:
 653         case LFUN_BREAKPARAGRAPH_SKIP:
 654                 argument = "\n";
 655                 // fall through
 656
 657 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
 658 // handling such that "self-insert" works on "arbitrary stuff" too, and
 659 // math-insert only handles special math things like "matrix".
 660         case LFUN_INSERT_MATH:
 661                 recordUndo(bv, Undo::ATOMIC);
 662                 mathcursor->niceInsert(argument);
 663                 break;
 664
 665         case -1:
 666         case LFUN_SELFINSERT:
 667                 if (!argument.empty()) {
 668                         recordUndo(bv, Undo::ATOMIC);
 669                         if (argument.size() == 1)
 670                                 result = mathcursor->interpret(argument[0]) ? DISPATCHED : FINISHED_RIGHT;
 671                         else
 672                                 mathcursor->insert(argument);
 673                 }
 674                 break;
 675
 676         case LFUN_ESCAPE:
 677                 if (mathcursor->selection())
 678                         mathcursor->selClear();
 679                 else
 680                         result = UNDISPATCHED;
 681                 break;
 682
 683         case LFUN_INSET_TOGGLE:
 684                 mathcursor->insetToggle();
 685                 break;
 686
 687         case LFUN_DIALOG_SHOW:
 688                 result = UNDISPATCHED;
 689                 break;
 690
 691         case LFUN_DIALOG_SHOW_NEW_INSET: {
 692                 string const & name = argument;
 693                 string data;
 694                 if (name == "ref") {
 695                         RefInset tmp(name);
 696                         data = tmp.createDialogStr(name);
 697                 }
 698
 699                 if (data.empty())
 700                         result = UNDISPATCHED;
 701                 else {
 702                         bv->owner()->getDialogs().show(name, data, 0);
 703                 }
 704         }
 705         break;
 706
 707         case LFUN_INSET_APPLY: {
 708                 string const name = cmd.getArg(0);
 709                 InsetBase * base =
 710                         bv->owner()->getDialogs().getOpenInset(name);
 711
 712                 if (base) {
 713                         FuncRequest fr(bv, LFUN_INSET_MODIFY, cmd.argument);
 714                         result = base->localDispatch(fr);
 715                 } else {
 716                         MathArray ar;
 717                         if (createMathInset_fromDialogStr(cmd.argument, ar)) {
 718                                 mathcursor->insert(ar);
 719                                 result = DISPATCHED;
 720                         } else {
 721                                 result = UNDISPATCHED;
 722                         }
 723                 }
 724         }
 725         break;
 726
 727         default:
 728                 result = UNDISPATCHED;
 729         }
 730
 731         if (result == DISPATCHED)
 732                 bv->updateInset(this);
 733
 734         mathcursor->normalize();
 735         mathcursor->touch();
 736
 737         Assert(mathcursor);
 738
 739         if (mathcursor->selection() || was_selection)
 740                 toggleInsetSelection(bv);
 741
 742         if (result == DISPATCHED || result == DISPATCHED_NOUPDATE ||
 743             result == UNDISPATCHED) {
 744                 fitInsetCursor(bv);
 745                 revealCodes(bv);
 746                 cmd.view()->stuffClipboard(mathcursor->grabSelection());
 747         } else {
 748                 releaseMathCursor(bv);
 749                 bv->unlockInset(this);
 750                 if (remove_inset)
 751                         bv->owner()->dispatch(FuncRequest(LFUN_DELETE));
 752         }
 753
 754         return result;  // original version
 755 }
 756
 757
 758 void InsetFormulaBase::revealCodes(BufferView * bv) const
 759 {
 760         if (!mathcursor)
 761                 return;
 762         bv->owner()->message(mathcursor->info());
 763
 764 #if 0
 765         // write something to the minibuffer
 766         // translate to latex
 767         mathcursor->markInsert();
 768         ostringstream os;
 769         write(NULL, os);
 770         string str = os.str();
 771         mathcursor->markErase();
 772         string::size_type pos = 0;
 773         string res;
 774         for (string::iterator it = str.begin(); it != str.end(); ++it) {
 775                 if (*it == '\n')
 776                         res += ' ';
 777                 else if (*it == '\0') {
 778                         res += "  -X-  ";
 779                         pos = it - str.begin();
 780                 }
 781                 else
 782                         res += *it;
 783         }
 784         if (pos > 30)
 785                 res = res.substr(pos - 30);
 786         if (res.size() > 60)
 787                 res = res.substr(0, 60);
 788         bv->owner()->message(res);
 789 #endif
 790 }
 791
 792
 793 Inset::Code InsetFormulaBase::lyxCode() const
 794 {
 795         return Inset::MATH_CODE;
 796 }
 797
 798
 799 int InsetFormulaBase::ylow() const
 800 {
 801         return yo_ - dim_.asc;
 802 }
 803
 804
 805 int InsetFormulaBase::yhigh() const
 806 {
 807         return yo_ + dim_.des;
 808 }
 809
 810
 811 int InsetFormulaBase::xlow() const
 812 {
 813         return xo_;
 814 }
 815
 816
 817 int InsetFormulaBase::xhigh() const
 818 {
 819         return xo_ + dim_.wid;
 820 }
 821
 822
 823 /////////////////////////////////////////////////////////////////////
 824
 825
 826 bool InsetFormulaBase::searchForward(BufferView * bv, string const & str,
 827                                      bool, bool)
 828 {
 829 #ifdef WITH_WARNINGS
 830 #warning pretty ugly
 831 #endif
 832         static InsetFormulaBase * lastformula = 0;
 833         static MathIterator current = MathIterator(ibegin(par().nucleus()));
 834         static MathArray ar;
 835         static string laststr;
 836
 837         if (lastformula != this || laststr != str) {
 838                 //lyxerr << "reset lastformula to " << this << "\n";
 839                 lastformula = this;
 840                 laststr = str;
 841                 current = ibegin(par().nucleus());
 842                 ar.clear();
 843                 mathed_parse_cell(ar, str);
 844         } else {
 845                 ++current;
 846         }
 847         //lyxerr << "searching '" << str << "' in " << this << ar << endl;
 848
 849         for (MathIterator it = current; it != iend(par().nucleus()); ++it) {
 850                 if (it.cell().matchpart(ar, it.back().pos_)) {
 851                         bv->unlockInset(bv->theLockingInset());
 852                         if (!bv->lockInset(this)) {
 853                                 lyxerr << "Cannot lock inset" << endl;
 854                                 return false;
 855                         }
 856                         delete mathcursor;
 857                         mathcursor = new MathCursor(this, true);
 858                         //metrics(bv);
 859                         mathcursor->setSelection(it, ar.size());
 860                         current = it;
 861                         it.jump(ar.size());
 862                         bv->updateInset(this);
 863                         return true;
 864                 }
 865         }
 866
 867         //lyxerr << "not found!\n";
 868         lastformula = 0;
 869         return false;
 870 }
 871
 872
 873 bool InsetFormulaBase::searchBackward(BufferView * bv, string const & what,
 874                                       bool a, bool b)
 875 {
 876         lyxerr[Debug::MATHED] << "searching backward not implemented in mathed\n";
 877         return searchForward(bv, what, a, b);
 878 }
 879
 880
 881 bool InsetFormulaBase::display() const
 882 {
 883         return par()->asHullInset() && par()->asHullInset()->display();
 884 }
 885
 886
 887 string InsetFormulaBase::selectionAsString() const
 888 {
 889         return mathcursor ? mathcursor->grabSelection() : string();
 890 }
 891
 892 /////////////////////////////////////////////////////////////////////
 893
 894
 895 void mathDispatchCreation(FuncRequest const & cmd, bool display)
 896 {
 897         BufferView * bv = cmd.view();
 898         // use selection if available..
 899         //string sel;
 900         //if (action == LFUN_MATH_IMPORT_SELECTION)
 901         //      sel = "";
 902         //else
 903
 904         string sel = bv->getLyXText()->selectionAsString(bv->buffer(), false);
 905
 906         if (sel.empty()) {
 907                 InsetFormula * f = new InsetFormula(bv);
 908                 if (openNewInset(bv, f)) {
 909                         bv->theLockingInset()->
 910                                 localDispatch(FuncRequest(bv, LFUN_MATH_MUTATE, "simple"));
 911                         // don't do that also for LFUN_MATH_MODE unless you want end up with
 912                         // always changing to mathrm when opening an inlined inset
 913                         // -- I really hate "LyXfunc overloading"...
 914                         if (display)
 915                                 f->localDispatch(FuncRequest(bv, LFUN_MATH_DISPLAY));
 916                         f->localDispatch(FuncRequest(bv, LFUN_INSERT_MATH, cmd.argument));
 917                 }
 918         } else {
 919                 // create a macro if we see "\\newcommand" somewhere, and an ordinary
 920                 // formula otherwise
 921                 InsetFormulaBase * f;
 922                 if (sel.find("\\newcommand") == string::npos &&
 923                                 sel.find("\\def") == string::npos)
 924                         f = new InsetFormula(sel);
 925                 else
 926                         f = new InsetFormulaMacro(sel);
 927                 bv->getLyXText()->cutSelection(true, false);
 928                 openNewInset(bv, f);
 929         }
 930         cmd.message(N_("Math editor mode"));
 931 }
 932
 933
 934 void mathDispatch(FuncRequest const & cmd)
 935 {
 936         BufferView * bv = cmd.view();
 937         if (!bv->available())
 938                 return;
 939
 940         switch (cmd.action) {
 941
 942                 case LFUN_MATH_DISPLAY:
 943                         mathDispatchCreation(cmd, true);
 944                         break;
 945
 946                 case LFUN_MATH_MODE:
 947                         mathDispatchCreation(cmd, false);
 948                         break;
 949
 950                 case LFUN_MATH_IMPORT_SELECTION:
 951                         mathDispatchCreation(cmd, false);
 952                         break;
 953
 954                 case LFUN_MATH_MACRO:
 955                         if (cmd.argument.empty())
 956                                 cmd.errorMessage(N_("Missing argument"));
 957                         else {
 958                                 string s = cmd.argument;
 959                                 string const s1 = token(s, ' ', 1);
 960                                 int const nargs = s1.empty() ? 0 : atoi(s1);
 961                                 string const s2 = token(s, ' ', 2);
 962                                 string const type = s2.empty() ? "newcommand" : s2;
 963                                 openNewInset(bv, new InsetFormulaMacro(token(s, ' ', 0), nargs, s2));
 964                         }
 965                         break;
 966
 967                 case LFUN_INSERT_MATH:
 968                 case LFUN_INSERT_MATRIX:
 969                 case LFUN_MATH_DELIM: {
 970                         InsetFormula * f = new InsetFormula(bv);
 971                         if (openNewInset(bv, f)) {
 972                                 bv->theLockingInset()->
 973                                         localDispatch(FuncRequest(bv, LFUN_MATH_MUTATE, "simple"));
 974                                 bv->theLockingInset()->localDispatch(cmd);
 975                         }
 976                         break;
 977                 }
 978
 979                 default:
 980                         break;
 981         }
 982 }