src/text3.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *           Copyright 1995 Matthias Ettrich
   7  *           Copyright 1995-2002 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <config.h>
  12
  13 #include "lyxtext.h"
  14 #include "lyxrow.h"
  15 #include "paragraph.h"
  16 #include "BufferView.h"
  17 #include "funcrequest.h"
  18 #include "lyxrc.h"
  19 #include "debug.h"
  20 #include "bufferparams.h"
  21 #include "buffer.h"
  22 #include "ParagraphParameters.h"
  23 #include "gettext.h"
  24 #include "intl.h"
  25 #include "support/lstrings.h"
  26 #include "frontends/LyXView.h"
  27 #include "frontends/WorkArea.h"
  28 #include "insets/insetspecialchar.h"
  29 #include "insets/insettext.h"
  30
  31
  32 extern string current_layout;
  33
  34
  35 void LyXText::update(BufferView * bv, bool changed)
  36 {
  37         BufferView::UpdateCodes c = BufferView::SELECT | BufferView::FITCUR;
  38         if (changed)
  39                 bv->update(this, c | BufferView::CHANGE);
  40         else
  41                 bv->update(this, c);
  42 }
  43
  44
  45 void specialChar(LyXText * lt, BufferView * bv, InsetSpecialChar::Kind kind)
  46 {
  47         bv->hideCursor();
  48         lt->update(bv);
  49         InsetSpecialChar * new_inset = new InsetSpecialChar(kind);
  50         if (!bv->insertInset(new_inset))
  51                 delete new_inset;
  52         else
  53                 bv->updateInset(new_inset, true);
  54 }
  55
  56
  57 Inset::RESULT LyXText::dispatch(FuncRequest const & cmd)
  58 {
  59         BufferView * bv = cmd.view();
  60
  61         switch (cmd.action) {
  62
  63         case LFUN_APPENDIX: {
  64                 Paragraph * par = cursor.par();
  65                 bool start = !par->params().startOfAppendix();
  66
  67                 // ensure that we have only one start_of_appendix in this document
  68                 Paragraph * tmp = ownerParagraph();
  69                 for (; tmp; tmp = tmp->next())
  70                         tmp->params().startOfAppendix(false);
  71
  72                 par->params().startOfAppendix(start);
  73
  74                 // we can set the refreshing parameters now
  75                 status(cmd.view(), LyXText::NEED_MORE_REFRESH);
  76                 refresh_y = 0;
  77                 refresh_row = 0; // not needed for full update
  78                 updateCounters(cmd.view());
  79                 setCursor(cmd.view(), cursor.par(), cursor.pos());
  80                 update(bv);
  81                 break;
  82         }
  83
  84         case LFUN_DELETE_WORD_FORWARD:
  85                 bv->beforeChange(this);
  86                 update(bv, false);
  87                 deleteWordForward(bv);
  88                 update(bv);
  89                 bv->finishChange();
  90                 break;
  91
  92         case LFUN_DELETE_WORD_BACKWARD:
  93                 bv->beforeChange(this);
  94                 update(bv, false);
  95                 deleteWordBackward(bv);
  96                 update(bv, true);
  97                 bv->finishChange();
  98                 break;
  99
 100         case LFUN_DELETE_LINE_FORWARD:
 101                 bv->beforeChange(this);
 102                 update(bv, false);
 103                 deleteLineForward(bv);
 104                 update(bv);
 105                 bv->finishChange();
 106                 break;
 107
 108         case LFUN_SHIFT_TAB:
 109         case LFUN_TAB:
 110                 if (!selection.mark())
 111                         bv->beforeChange(this);
 112                 update(bv, false);
 113                 cursorTab(bv);
 114                 bv->finishChange();
 115                 break;
 116
 117         case LFUN_WORDRIGHT:
 118                 if (!selection.mark())
 119                         bv->beforeChange(this);
 120                 update(bv, false);
 121                 if (cursor.par()->isRightToLeftPar(bv->buffer()->params))
 122                         cursorLeftOneWord(bv);
 123                 else
 124                         cursorRightOneWord(bv);
 125                 bv->finishChange();
 126                 break;
 127
 128         case LFUN_WORDLEFT:
 129                 if (!selection.mark())
 130                         bv->beforeChange(this);
 131                 update(bv, false);
 132                 if (cursor.par()->isRightToLeftPar(bv->buffer()->params))
 133                         cursorRightOneWord(bv);
 134                 else
 135                         cursorLeftOneWord(bv);
 136                 bv->finishChange();
 137                 break;
 138
 139         case LFUN_BEGINNINGBUF:
 140                 if (!selection.mark())
 141                         bv->beforeChange(this);
 142                 update(bv, false);
 143                 cursorTop(bv);
 144                 bv->finishChange();
 145                 break;
 146
 147         case LFUN_ENDBUF:
 148                 if (selection.mark())
 149                         bv->beforeChange(this);
 150                 update(bv, false);
 151                 cursorBottom(bv);
 152                 bv->finishChange();
 153                 break;
 154
 155         case LFUN_RIGHTSEL:
 156                 update(bv, false);
 157                 if (cursor.par()->isRightToLeftPar(bv->buffer()->params))
 158                         cursorLeft(bv);
 159                 else
 160                         cursorRight(bv);
 161                 bv->finishChange(true);
 162                 break;
 163
 164         case LFUN_LEFTSEL:
 165                 update(bv, false);
 166                 if (cursor.par()->isRightToLeftPar(bv->buffer()->params))
 167                         cursorRight(bv);
 168                 else
 169                         cursorLeft(bv);
 170                 bv->finishChange(true);
 171                 break;
 172
 173         case LFUN_UPSEL:
 174                 update(bv, false);
 175                 cursorUp(bv, true);
 176                 bv->finishChange(true);
 177                 break;
 178
 179         case LFUN_DOWNSEL:
 180                 update(bv, false);
 181                 cursorDown(bv, true);
 182                 bv->finishChange(true);
 183                 break;
 184
 185         case LFUN_UP_PARAGRAPHSEL:
 186                 update(bv, false);
 187                 cursorUpParagraph(bv);
 188                 bv->finishChange(true);
 189                 break;
 190
 191         case LFUN_DOWN_PARAGRAPHSEL:
 192                 update(bv, false);
 193                 cursorDownParagraph(bv);
 194                 bv->finishChange(true);
 195                 break;
 196
 197         case LFUN_PRIORSEL:
 198                 update(bv, false);
 199                 bv->cursorPrevious(this);
 200                 bv->finishChange(true);
 201                 break;
 202
 203         case LFUN_NEXTSEL:
 204                 update(bv, false);
 205                 bv->cursorNext(this);
 206                 bv->finishChange();
 207                 break;
 208
 209         case LFUN_HOMESEL:
 210                 update(bv, false);
 211                 cursorHome(bv);
 212                 bv->finishChange(true);
 213                 break;
 214
 215         case LFUN_ENDSEL:
 216                 update(bv, false);
 217                 cursorEnd(bv);
 218                 bv->finishChange(true);
 219                 break;
 220
 221         case LFUN_WORDRIGHTSEL:
 222                 update(bv, false);
 223                 if (cursor.par()->isRightToLeftPar(bv->buffer()->params))
 224                         cursorLeftOneWord(bv);
 225                 else
 226                         cursorRightOneWord(bv);
 227                 bv->finishChange(true);
 228                 break;
 229
 230         case LFUN_WORDLEFTSEL:
 231                 update(bv, false);
 232                 if (cursor.par()->isRightToLeftPar(bv->buffer()->params))
 233                         cursorRightOneWord(bv);
 234                 else
 235                         cursorLeftOneWord(bv);
 236                 bv->finishChange(true);
 237                 break;
 238
 239         case LFUN_RIGHT: {
 240                 bool is_rtl = cursor.par()->isRightToLeftPar(bv->buffer()->params);
 241                 if (!selection.mark())
 242                         bv->beforeChange(this);
 243                 update(bv);
 244                 if (is_rtl)
 245                         cursorLeft(bv, false);
 246                 if (cursor.pos() < cursor.par()->size()
 247                     && cursor.par()->isInset(cursor.pos())
 248                     && isHighlyEditableInset(cursor.par()->getInset(cursor.pos()))) {
 249                         Inset * tmpinset = cursor.par()->getInset(cursor.pos());
 250                         cmd.message(tmpinset->editMessage());
 251                         tmpinset->edit(bv, !is_rtl);
 252                         break;
 253                 }
 254                 if (!is_rtl)
 255                         cursorRight(bv, false);
 256                 bv->finishChange(false);
 257                 break;
 258         }
 259
 260         case LFUN_LEFT: {
 261                 // This is soooo ugly. Isn`t it possible to make
 262                 // it simpler? (Lgb)
 263                 bool const is_rtl = cursor.par()->isRightToLeftPar(bv->buffer()->params);
 264                 if (!selection.mark())
 265                         bv->beforeChange(this);
 266                 update(bv);
 267                 LyXCursor const cur = cursor;
 268                 if (!is_rtl)
 269                         cursorLeft(bv, false);
 270                 if ((is_rtl || cur != cursor) && // only if really moved!
 271                     cursor.pos() < cursor.par()->size() &&
 272                     cursor.par()->isInset(cursor.pos()) &&
 273                     isHighlyEditableInset(cursor.par()->getInset(cursor.pos()))) {
 274                         Inset * tmpinset = cursor.par()->getInset(cursor.pos());
 275                         cmd.message(tmpinset->editMessage());
 276                         tmpinset->edit(bv, is_rtl);
 277                         break;
 278                 }
 279                 if (is_rtl)
 280                         cursorRight(bv, false);
 281                 bv->finishChange(false);
 282                 break;
 283         }
 284
 285         case LFUN_UP:
 286                 if (!selection.mark())
 287                         bv->beforeChange(this);
 288                 bv->update(this, BufferView::UPDATE);
 289                 cursorUp(bv);
 290                 bv->finishChange(false);
 291                 break;
 292
 293         case LFUN_DOWN:
 294                 if (!selection.mark())
 295                         bv->beforeChange(this);
 296                 bv->update(this, BufferView::UPDATE);
 297                 cursorDown(bv);
 298                 bv->finishChange();
 299                 break;
 300
 301         case LFUN_UP_PARAGRAPH:
 302                 if (!selection.mark())
 303                         bv->beforeChange(this);
 304                 bv->update(this, BufferView::UPDATE);
 305                 cursorUpParagraph(bv);
 306                 bv->finishChange();
 307                 break;
 308
 309         case LFUN_DOWN_PARAGRAPH:
 310                 if (!selection.mark())
 311                         bv->beforeChange(this);
 312                 bv->update(this, BufferView::UPDATE);
 313                 cursorDownParagraph(bv);
 314                 bv->finishChange(false);
 315                 break;
 316
 317         case LFUN_PRIOR:
 318                 if (!selection.mark())
 319                         bv->beforeChange(this);
 320                 bv->update(this, BufferView::UPDATE);
 321                 bv->cursorPrevious(this);
 322                 bv->finishChange(false);
 323                 // was:
 324                 // finishUndo();
 325                 // moveCursorUpdate(false, false);
 326                 // owner_->view_state_changed();
 327                 break;
 328
 329         case LFUN_NEXT:
 330                 if (!selection.mark())
 331                         bv->beforeChange(this);
 332                 bv->update(this, BufferView::UPDATE);
 333                 bv->cursorNext(this);
 334                 bv->finishChange(false);
 335                 break;
 336
 337         case LFUN_HOME:
 338                 if (!selection.mark())
 339                         bv->beforeChange(this);
 340                 update(bv);
 341                 cursorHome(bv);
 342                 bv->finishChange(false);
 343                 break;
 344
 345         case LFUN_END:
 346                 if (!selection.mark())
 347                         bv->beforeChange(this);
 348                 update(bv);
 349                 cursorEnd(bv);
 350                 bv->finishChange(false);
 351                 break;
 352
 353         case LFUN_BREAKLINE:
 354                 bv->beforeChange(this);
 355                 insertChar(bv, Paragraph::META_NEWLINE);
 356                 update(bv, true);
 357                 setCursor(bv, cursor.par(), cursor.pos());
 358                 bv->moveCursorUpdate(false);
 359                 break;
 360
 361         case LFUN_DELETE:
 362                 if (!selection.set()) {
 363                         Delete(bv);
 364                         selection.cursor = cursor;
 365                         update(bv);
 366                         // It is possible to make it a lot faster still
 367                         // just comment out the line below...
 368                         bv->showCursor();
 369                 } else {
 370                         bv->cut(false);
 371                 }
 372                 bv->moveCursorUpdate(false);
 373                 bv->owner()->view_state_changed();
 374                 bv->switchKeyMap();
 375                 break;
 376
 377         case LFUN_DELETE_SKIP:
 378                 // Reverse the effect of LFUN_BREAKPARAGRAPH_SKIP.
 379                 if (!selection.set()) {
 380                         LyXCursor cur = cursor;
 381                         if (cur.pos() == cur.par()->size()) {
 382                                 cursorRight(bv);
 383                                 cur = cursor;
 384                                 if (cur.pos() == 0
 385                                     && !(cur.par()->params().spaceTop()
 386                                          == VSpace (VSpace::NONE))) {
 387                                         setParagraph(bv,
 388                                                  cur.par()->params().lineTop(),
 389                                                  cur.par()->params().lineBottom(),
 390                                                  cur.par()->params().pagebreakTop(),
 391                                                  cur.par()->params().pagebreakBottom(),
 392                                                  VSpace(VSpace::NONE),
 393                                                  cur.par()->params().spaceBottom(),
 394                                                  cur.par()->params().spacing(),
 395                                                  cur.par()->params().align(),
 396                                                  cur.par()->params().labelWidthString(), 0);
 397                                         cursorLeft(bv);
 398                                         update(bv);
 399                                 } else {
 400                                         cursorLeft(bv);
 401                                         Delete(bv);
 402                                         selection.cursor = cursor;
 403                                         update(bv);
 404                                 }
 405                         } else {
 406                                 Delete(bv);
 407                                 selection.cursor = cursor;
 408                                 update(bv);
 409                         }
 410                 } else
 411                         bv->cut(false);
 412                 break;
 413
 414
 415         case LFUN_BACKSPACE:
 416                 if (!selection.set()) {
 417                         if (bv->owner()->getIntl().getTransManager().backspace()) {
 418                                 backspace(bv);
 419                                 selection.cursor = cursor;
 420                                 update(bv);
 421                                 // It is possible to make it a lot faster still
 422                                 // just comment out the line below...
 423                                 bv->showCursor();
 424                         }
 425                 } else
 426                         bv->cut(false);
 427                 bv->owner()->view_state_changed();
 428                 bv->switchKeyMap();
 429                 break;
 430
 431         case LFUN_BACKSPACE_SKIP:
 432                 // Reverse the effect of LFUN_BREAKPARAGRAPH_SKIP.
 433                 if (!selection.set()) {
 434                         LyXCursor cur = cursor;
 435                         if (cur.pos() == 0
 436                             && !(cur.par()->params().spaceTop()
 437                                  == VSpace (VSpace::NONE))) {
 438                                 setParagraph(bv,
 439                                          cur.par()->params().lineTop(),
 440                                          cur.par()->params().lineBottom(),
 441                                          cur.par()->params().pagebreakTop(),
 442                                          cur.par()->params().pagebreakBottom(),
 443                                          VSpace(VSpace::NONE), cur.par()->params().spaceBottom(),
 444                                          cur.par()->params().spacing(),
 445                                          cur.par()->params().align(),
 446                                          cur.par()->params().labelWidthString(), 0);
 447                                 update(bv);
 448                         } else {
 449                                 backspace(bv);
 450                                 selection.cursor = cur;
 451                                 update(bv);
 452                         }
 453                 } else
 454                         bv->cut(false);
 455                 break;
 456
 457         case LFUN_BREAKPARAGRAPH:
 458                 bv->beforeChange(this);
 459                 breakParagraph(bv, 0);
 460                 update(bv);
 461                 selection.cursor = cursor;
 462                 bv->switchKeyMap();
 463                 bv->owner()->view_state_changed();
 464                 break;
 465
 466         case LFUN_BREAKPARAGRAPHKEEPLAYOUT:
 467                 bv->beforeChange(this);
 468                 breakParagraph(bv, 1);
 469                 update(bv);
 470                 selection.cursor = cursor;
 471                 bv->switchKeyMap();
 472                 bv->owner()->view_state_changed();
 473                 break;
 474
 475         case LFUN_BREAKPARAGRAPH_SKIP: {
 476                 // When at the beginning of a paragraph, remove
 477                 // indentation and add a "defskip" at the top.
 478                 // Otherwise, do the same as LFUN_BREAKPARAGRAPH.
 479                 LyXCursor cur = cursor;
 480                 bv->beforeChange(this);
 481                 if (cur.pos() == 0) {
 482                         if (cur.par()->params().spaceTop() == VSpace(VSpace::NONE)) {
 483                                 setParagraph(bv,
 484                                          cur.par()->params().lineTop(),
 485                                          cur.par()->params().lineBottom(),
 486                                          cur.par()->params().pagebreakTop(),
 487                                          cur.par()->params().pagebreakBottom(),
 488                                          VSpace(VSpace::DEFSKIP), cur.par()->params().spaceBottom(),
 489                                          cur.par()->params().spacing(),
 490                                          cur.par()->params().align(),
 491                                          cur.par()->params().labelWidthString(), 1);
 492                                 //update(bv);
 493                         }
 494                 }
 495                 else {
 496                         breakParagraph(bv, 0);
 497                         //update(bv);
 498                 }
 499                 update(bv);
 500                 selection.cursor = cur;
 501                 bv->switchKeyMap();
 502                 bv->owner()->view_state_changed();
 503                 break;
 504         }
 505
 506         case LFUN_PARAGRAPH_SPACING: {
 507                 Paragraph * par = cursor.par();
 508                 Spacing::Space cur_spacing = par->params().spacing().getSpace();
 509                 float cur_value = 1.0;
 510                 if (cur_spacing == Spacing::Other)
 511                         cur_value = par->params().spacing().getValue();
 512
 513                 istringstream is(cmd.argument.c_str());
 514                 string tmp;
 515                 is >> tmp;
 516                 Spacing::Space new_spacing = cur_spacing;
 517                 float new_value = cur_value;
 518                 if (tmp.empty()) {
 519                         lyxerr << "Missing argument to `paragraph-spacing'"
 520                                << endl;
 521                 } else if (tmp == "single") {
 522                         new_spacing = Spacing::Single;
 523                 } else if (tmp == "onehalf") {
 524                         new_spacing = Spacing::Onehalf;
 525                 } else if (tmp == "double") {
 526                         new_spacing = Spacing::Double;
 527                 } else if (tmp == "other") {
 528                         new_spacing = Spacing::Other;
 529                         float tmpval = 0.0;
 530                         is >> tmpval;
 531                         lyxerr << "new_value = " << tmpval << endl;
 532                         if (tmpval != 0.0)
 533                                 new_value = tmpval;
 534                 } else if (tmp == "default") {
 535                         new_spacing = Spacing::Default;
 536                 } else {
 537                         lyxerr << _("Unknown spacing argument: ")
 538                                << cmd.argument << endl;
 539                 }
 540                 if (cur_spacing != new_spacing || cur_value != new_value) {
 541                         par->params().spacing(Spacing(new_spacing, new_value));
 542                         redoParagraph(bv);
 543                         update(bv);
 544                 }
 545                 break;
 546         }
 547
 548         case LFUN_INSET_TOGGLE:
 549                 bv->hideCursor();
 550                 bv->beforeChange(this);
 551                 update(bv, false);
 552                 toggleInset(bv);
 553                 update(bv, false);
 554                 bv->switchKeyMap();
 555                 break;
 556
 557         case LFUN_PROTECTEDSPACE:
 558                 if (cursor.par()->layout()->free_spacing) {
 559                         insertChar(bv, ' ');
 560                         update(bv);
 561                 } else {
 562                         specialChar(this, bv, InsetSpecialChar::PROTECTED_SEPARATOR);
 563                 }
 564                 bv->moveCursorUpdate(false);
 565                 break;
 566
 567         case LFUN_HYPHENATION:
 568                 specialChar(this, bv, InsetSpecialChar::HYPHENATION);
 569                 break;
 570
 571         case LFUN_LIGATURE_BREAK:
 572                 specialChar(this, bv, InsetSpecialChar::LIGATURE_BREAK);
 573                 break;
 574
 575         case LFUN_LDOTS:
 576                 specialChar(this, bv, InsetSpecialChar::LDOTS);
 577                 break;
 578
 579         case LFUN_HFILL:
 580                 bv->hideCursor();
 581                 update(bv, false);
 582                 insertChar(bv, Paragraph::META_HFILL);
 583                 update(bv);
 584                 break;
 585
 586         case LFUN_END_OF_SENTENCE:
 587                 specialChar(this, bv, InsetSpecialChar::END_OF_SENTENCE);
 588                 break;
 589
 590         case LFUN_MENU_SEPARATOR:
 591                 specialChar(this, bv, InsetSpecialChar::MENU_SEPARATOR);
 592                 break;
 593
 594         case LFUN_MARK_OFF:
 595                 bv->beforeChange(this);
 596                 update(bv, false);
 597                 selection.cursor = cursor;
 598                 cmd.message(N_("Mark off"));
 599                 break;
 600
 601         case LFUN_MARK_ON:
 602                 bv->beforeChange(this);
 603                 selection.mark(true);
 604                 update(bv, false);
 605                 selection.cursor = cursor;
 606                 cmd.message(N_("Mark on"));
 607                 break;
 608
 609         case LFUN_SETMARK:
 610                 bv->beforeChange(this);
 611                 if (selection.mark()) {
 612                         update(bv);
 613                         cmd.message(N_("Mark removed"));
 614                 } else {
 615                         selection.mark(true);
 616                         update(bv);
 617                         cmd.message(N_("Mark set"));
 618                 }
 619                 selection.cursor = cursor;
 620                 break;
 621
 622         case LFUN_UPCASE_WORD:
 623                 update(bv, false);
 624                 changeCase(bv, LyXText::text_uppercase);
 625                 if (inset_owner)
 626                         bv->updateInset(inset_owner, true);
 627                 update(bv);
 628                 break;
 629
 630         case LFUN_LOWCASE_WORD:
 631                 update(bv, false);
 632                 changeCase(bv, LyXText::text_lowercase);
 633                 if (inset_owner)
 634                         bv->updateInset(inset_owner, true);
 635                 update(bv);
 636                 break;
 637
 638         case LFUN_CAPITALIZE_WORD:
 639                 update(bv, false);
 640                 changeCase(bv, LyXText::text_capitalization);
 641                 if (inset_owner)
 642                         bv->updateInset(inset_owner, true);
 643                 update(bv);
 644                 break;
 645
 646         case LFUN_TRANSPOSE_CHARS:
 647                 update(bv, false);
 648                 transposeChars(*bv);
 649                 if (inset_owner)
 650                         bv->updateInset(inset_owner, true);
 651                 update(bv);
 652                 break;
 653
 654         case LFUN_BEGINNINGBUFSEL:
 655                 if (inset_owner)
 656                         return Inset::UNDISPATCHED;
 657                 update(bv, false);
 658                 cursorTop(bv);
 659                 bv->finishChange(true);
 660                 break;
 661
 662         case LFUN_ENDBUFSEL:
 663                 if (inset_owner)
 664                         return Inset::UNDISPATCHED;
 665                 update(bv, false);
 666                 cursorBottom(bv);
 667                 bv->finishChange(true);
 668                 break;
 669
 670         case LFUN_GETXY:
 671                 cmd.message(tostr(cursor.x()) + ' ' + tostr(cursor.y()));
 672                 break;
 673
 674         case LFUN_SETXY: {
 675                 int x = 0;
 676                 int y = 0;
 677                 if (::sscanf(cmd.argument.c_str(), " %d %d", &x, &y) != 2)
 678                         lyxerr << "SETXY: Could not parse coordinates in '"
 679                                << cmd.argument << std::endl;
 680                 setCursorFromCoordinates(bv, x, y);
 681                 break;
 682         }
 683
 684         case LFUN_GETFONT:
 685                 if (current_font.shape() == LyXFont::ITALIC_SHAPE)
 686                         cmd.message("E");
 687                 else if (current_font.shape() == LyXFont::SMALLCAPS_SHAPE)
 688                         cmd.message("N");
 689                 else
 690                         cmd.message("0");
 691                 break;
 692
 693         case LFUN_GETLAYOUT:
 694                 cmd.message(tostr(cursor.par()->layout()));
 695                 break;
 696
 697         case LFUN_LAYOUT: {
 698                 lyxerr[Debug::INFO] << "LFUN_LAYOUT: (arg) "
 699                   << cmd.argument << endl;
 700
 701                 // This is not the good solution to the empty argument
 702                 // problem, but it will hopefully suffice for 1.2.0.
 703                 // The correct solution would be to augument the
 704                 // function list/array with information about what
 705                 // functions needs arguments and their type.
 706                 if (cmd.argument.empty()) {
 707                         cmd.errorMessage(_("LyX function 'layout' needs an argument."));
 708                         break;
 709                 }
 710
 711                 // Derive layout number from given argument (string)
 712                 // and current buffer's textclass (number)
 713                 LyXTextClass const & tclass = bv->buffer()->params.getLyXTextClass();
 714                 bool hasLayout = tclass.hasLayout(cmd.argument);
 715                 string layout = cmd.argument;
 716
 717                 // If the entry is obsolete, use the new one instead.
 718                 if (hasLayout) {
 719                         string const & obs = tclass[layout]->obsoleted_by();
 720                         if (!obs.empty())
 721                                 layout = obs;
 722                 }
 723
 724                 if (!hasLayout) {
 725                         cmd.errorMessage(string(N_("Layout ")) + cmd.argument +
 726                                 N_(" not known"));
 727                         break;
 728                 }
 729
 730                 bool change_layout = (current_layout != layout);
 731                 if (!change_layout && selection.set() &&
 732                         selection.start.par() != selection.end.par())
 733                 {
 734                         Paragraph * spar = selection.start.par();
 735                         Paragraph * epar = selection.end.par()->next();
 736                         while (spar != epar) {
 737                                 if (spar->layout()->name() != current_layout) {
 738                                         change_layout = true;
 739                                         break;
 740                                 }
 741                         }
 742                 }
 743                 if (change_layout) {
 744                         bv->hideCursor();
 745                         current_layout = layout;
 746                         update(bv, false);
 747                         setLayout(bv, layout);
 748                         bv->owner()->setLayout(layout);
 749                         update(bv);
 750                         bv->switchKeyMap();
 751                 }
 752                 break;
 753         }
 754
 755         case LFUN_PASTESELECTION: {
 756                 if (!bv->buffer())
 757                         break;
 758                 bv->hideCursor();
 759                 // this was originally a beforeChange(bv->text), i.e
 760                 // the outermost LyXText!
 761                 bv->beforeChange(this);
 762                 string const clip(bv->workarea().getClipboard());
 763                 if (!clip.empty()) {
 764                         if (cmd.argument == "paragraph")
 765                                 insertStringAsParagraphs(bv, clip);
 766                         else
 767                                 insertStringAsLines(bv, clip);
 768                         clearSelection();
 769                         update(bv);
 770                 }
 771                 break;
 772         }
 773
 774         case LFUN_SELFINSERT: {
 775                 if (cmd.argument.empty())
 776                         break;
 777
 778                 // Automatically delete the currently selected
 779                 // text and replace it with what is being
 780                 // typed in now. Depends on lyxrc settings
 781                 // "auto_region_delete", which defaults to
 782                 // true (on).
 783
 784                 if (lyxrc.auto_region_delete) {
 785                         if (selection.set()) {
 786                                 cutSelection(bv, false, false);
 787                                 update(bv);
 788                         }
 789                         bv->workarea().haveSelection(false);
 790                 }
 791
 792                 bv->beforeChange(this);
 793                 LyXFont const old_font(real_current_font);
 794
 795                 string::const_iterator cit = cmd.argument.begin();
 796                 string::const_iterator end = cmd.argument.end();
 797                 for (; cit != end; ++cit)
 798                         bv->owner()->getIntl().getTransManager().
 799                                 TranslateAndInsert(*cit, this);
 800
 801                 update(bv);
 802                 selection.cursor = cursor;
 803                 bv->moveCursorUpdate(false);
 804
 805                 // real_current_font.number can change so we need to
 806                 // update the minibuffer
 807                 if (old_font != real_current_font)
 808                         bv->owner()->view_state_changed();
 809                 break;
 810         }
 811
 812         default:
 813                 return Inset::UNDISPATCHED;
 814         }
 815
 816         return Inset::DISPATCHED;
 817 }