src/BufferView_pimpl.C

   1 /**
   2  * \file BufferView_pimpl.C
   3  * Copyright 2002 the LyX Team
   4  * Read the file COPYING
   5  *
   6  * \author various
   7  */
   8
   9 #include <config.h>
  10
  11 #ifdef __GNUG__
  12 #pragma implementation
  13 #endif
  14
  15 #include "BufferView_pimpl.h"
  16 #include "frontends/WorkArea.h"
  17 #include "frontends/screen.h"
  18 #include "frontends/LyXScreenFactory.h"
  19 #include "frontends/WorkAreaFactory.h"
  20 #include "frontends/Dialogs.h"
  21 #include "frontends/Alert.h"
  22 #include "frontends/FileDialog.h"
  23 #include "frontends/mouse_state.h"
  24 #include "lyxtext.h"
  25 #include "lyxrow.h"
  26 #include "paragraph.h"
  27 #include "frontends/LyXView.h"
  28 #include "commandtags.h"
  29 #include "lyxfunc.h"
  30 #include "debug.h"
  31 #include "bufferview_funcs.h"
  32 #include "TextCache.h"
  33 #include "bufferlist.h"
  34 #include "lyxrc.h"
  35 #include "intl.h"
  36 // added for Dispatch functions
  37 #include "lyx_cb.h"
  38 #include "lyx_main.h"
  39 #include "FloatList.h"
  40 #include "gettext.h"
  41 #include "ParagraphParameters.h"
  42 #include "undo_funcs.h"
  43 #include "funcrequest.h"
  44
  45 #include "insets/insetbib.h"
  46 #include "insets/insettext.h"
  47 #include "insets/insetlatexaccent.h"
  48 #include "insets/insettoc.h"
  49 #include "insets/insetindex.h"
  50 #include "insets/insetref.h"
  51 #include "insets/insetinclude.h"
  52 #include "insets/insetcite.h"
  53 #include "insets/insetgraphics.h"
  54 #include "insets/insetmarginal.h"
  55 #include "insets/insetfloatlist.h"
  56
  57 #include "mathed/formulabase.h"
  58
  59 #include "graphics/Previews.h"
  60
  61 #include "support/LAssert.h"
  62 #include "support/lstrings.h"
  63 #include "support/filetools.h"
  64
  65 #include <boost/bind.hpp>
  66 #include <boost/signals/connection.hpp>
  67
  68 #include <unistd.h>
  69 #include <sys/wait.h>
  70
  71
  72 using std::vector;
  73 using std::find_if;
  74 using std::find;
  75 using std::pair;
  76 using std::endl;
  77 using std::make_pair;
  78 using std::min;
  79
  80 using lyx::pos_type;
  81
  82 extern BufferList bufferlist;
  83
  84
  85 namespace {
  86
  87 unsigned int const saved_positions_num = 20;
  88
  89 // All the below connection objects are needed because of a bug in some
  90 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  91 // to these connections we avoid a segfault upon startup, and also at exit.
  92 // (Lgb)
  93
  94 boost::signals::connection dispatchcon;
  95 boost::signals::connection timecon;
  96 boost::signals::connection doccon;
  97 boost::signals::connection resizecon;
  98 boost::signals::connection kpresscon;
  99 boost::signals::connection selectioncon;
 100 boost::signals::connection lostcon;
 101
 102
 103 } // anon namespace
 104
 105
 106 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 107              int xpos, int ypos, int width, int height)
 108         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 109           using_xterm_cursor(false)
 110 {
 111         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 112         screen_.reset(LyXScreenFactory::create(workarea()));
 113
 114         // Setup the signals
 115         doccon = workarea().scrollDocView
 116                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 117         resizecon = workarea().workAreaResize
 118                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 119         dispatchcon = workarea().dispatch
 120                 .connect(boost::bind(&BufferView::Pimpl::dispatch, this, _1));
 121         kpresscon = workarea().workAreaKeyPress
 122                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 123         selectioncon = workarea().selectionRequested
 124                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 125         lostcon = workarea().selectionLost
 126                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 127
 128         timecon = cursor_timeout.timeout
 129                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 130         cursor_timeout.start();
 131         saved_positions.resize(saved_positions_num);
 132 }
 133
 134
 135 WorkArea & BufferView::Pimpl::workarea() const
 136 {
 137         return *workarea_.get();
 138 }
 139
 140
 141 LyXScreen & BufferView::Pimpl::screen() const
 142 {
 143         return *screen_.get();
 144 }
 145
 146
 147 Painter & BufferView::Pimpl::painter() const
 148 {
 149         return workarea().getPainter();
 150 }
 151
 152
 153 void BufferView::Pimpl::buffer(Buffer * b)
 154 {
 155         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 156                             << b << ")" << endl;
 157         if (buffer_) {
 158                 buffer_->delUser(bv_);
 159
 160                 // Put the old text into the TextCache, but
 161                 // only if the buffer is still loaded.
 162                 // Also set the owner of the test to 0
 163                 //              bv_->text->owner(0);
 164                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 165                 if (lyxerr.debugging())
 166                         textcache.show(lyxerr, "BufferView::buffer");
 167
 168                 bv_->text = 0;
 169         }
 170
 171         // set current buffer
 172         buffer_ = b;
 173
 174         if (bufferlist.getState() == BufferList::CLOSING) return;
 175
 176         // if we are closing the buffer, use the first buffer as current
 177         if (!buffer_) {
 178                 buffer_ = bufferlist.first();
 179         }
 180
 181         if (buffer_) {
 182                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 183                 buffer_->addUser(bv_);
 184
 185                 // If we don't have a text object for this, we make one
 186                 if (bv_->text == 0) {
 187                         resizeCurrentBuffer();
 188                 }
 189
 190                 // FIXME: needed when ?
 191                 bv_->text->first_y =
 192                         screen().topCursorVisible(bv_->text->cursor, bv_->text->first_y);
 193
 194                 // Similarly, buffer-dependent dialogs should be updated or
 195                 // hidden. This should go here because some dialogs (eg ToC)
 196                 // require bv_->text.
 197                 owner_->getDialogs().updateBufferDependent(true);
 198         } else {
 199                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 200                 owner_->getDialogs().hideBufferDependent();
 201
 202                 // Also remove all remaining text's from the testcache.
 203                 // (there should not be any!) (if there is any it is a
 204                 // bug!)
 205                 if (lyxerr.debugging())
 206                         textcache.show(lyxerr, "buffer delete all");
 207                 textcache.clear();
 208         }
 209
 210         repaint();
 211         updateScrollbar();
 212         owner_->updateMenubar();
 213         owner_->updateToolbar();
 214         owner_->updateLayoutChoice();
 215         owner_->updateWindowTitle();
 216
 217         if (grfx::Previews::activated() && buffer_)
 218                 grfx::Previews::get().generateBufferPreviews(*buffer_);
 219 }
 220
 221
 222 bool BufferView::Pimpl::fitCursor()
 223 {
 224         bool ret;
 225
 226         if (bv_->theLockingInset()) {
 227                 bv_->theLockingInset()->fitInsetCursor(bv_);
 228                 ret = true;
 229         } else {
 230                 ret = screen().fitCursor(bv_->text, bv_);
 231         }
 232
 233         bv_->owner()->getDialogs().updateParagraph();
 234         if (ret)
 235                 updateScrollbar();
 236         return ret;
 237 }
 238
 239
 240 void BufferView::Pimpl::redoCurrentBuffer()
 241 {
 242         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 243         if (buffer_ && bv_->text) {
 244                 resizeCurrentBuffer();
 245                 updateScrollbar();
 246                 owner_->updateLayoutChoice();
 247                 repaint();
 248         }
 249 }
 250
 251
 252 int BufferView::Pimpl::resizeCurrentBuffer()
 253 {
 254         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 255
 256         Paragraph * par = 0;
 257         Paragraph * selstartpar = 0;
 258         Paragraph * selendpar = 0;
 259         UpdatableInset * the_locking_inset = 0;
 260
 261         pos_type pos = 0;
 262         pos_type selstartpos = 0;
 263         pos_type selendpos = 0;
 264         bool selection = false;
 265         bool mark_set  = false;
 266
 267         owner_->prohibitInput();
 268
 269         owner_->message(_("Formatting document..."));
 270
 271         if (bv_->text) {
 272                 par = bv_->text->cursor.par();
 273                 pos = bv_->text->cursor.pos();
 274                 selstartpar = bv_->text->selection.start.par();
 275                 selstartpos = bv_->text->selection.start.pos();
 276                 selendpar = bv_->text->selection.end.par();
 277                 selendpos = bv_->text->selection.end.pos();
 278                 selection = bv_->text->selection.set();
 279                 mark_set = bv_->text->selection.mark();
 280                 the_locking_inset = bv_->theLockingInset();
 281                 buffer_->resizeInsets(bv_);
 282                 // I don't think the delete and new are necessary here we just could
 283                 // call only init! (Jug 20020419)
 284                 delete bv_->text;
 285                 bv_->text = new LyXText(bv_);
 286                 bv_->text->init(bv_);
 287         } else {
 288                 // See if we have a text in TextCache that fits
 289                 // the new buffer_ with the correct width.
 290                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 291                 if (bv_->text) {
 292                         if (lyxerr.debugging()) {
 293                                 lyxerr << "Found a LyXText that fits:\n";
 294                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 295                         }
 296                         // Set the owner of the newly found text
 297                         //      bv_->text->owner(bv_);
 298                         if (lyxerr.debugging())
 299                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 300                 } else {
 301                         bv_->text = new LyXText(bv_);
 302                         bv_->text->init(bv_);
 303                         //buffer_->resizeInsets(bv_);
 304                 }
 305         }
 306
 307         if (par) {
 308                 bv_->text->selection.set(true);
 309                 // At this point just to avoid the Delete-Empty-Paragraph-
 310                 // Mechanism when setting the cursor.
 311                 bv_->text->selection.mark(mark_set);
 312                 if (selection) {
 313                         bv_->text->setCursor(bv_, selstartpar, selstartpos);
 314                         bv_->text->selection.cursor = bv_->text->cursor;
 315                         bv_->text->setCursor(bv_, selendpar, selendpos);
 316                         bv_->text->setSelection(bv_);
 317                         bv_->text->setCursor(bv_, par, pos);
 318                 } else {
 319                         bv_->text->setCursor(bv_, par, pos);
 320                         bv_->text->selection.cursor = bv_->text->cursor;
 321                         bv_->text->selection.set(false);
 322                 }
 323                 // remake the inset locking
 324                 bv_->theLockingInset(the_locking_inset);
 325         }
 326
 327         bv_->text->first_y = screen().topCursorVisible(bv_->text->cursor, bv_->text->first_y);
 328
 329         switchKeyMap();
 330         owner_->allowInput();
 331
 332         updateScrollbar();
 333
 334         return 0;
 335 }
 336
 337
 338 void BufferView::Pimpl::repaint()
 339 {
 340         // Regenerate the screen.
 341         screen().redraw(bv_->text, bv_);
 342 }
 343
 344
 345 void BufferView::Pimpl::updateScrollbar()
 346 {
 347         if (!bv_->text) {
 348                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 349                 workarea().setScrollbarParams(0, 0, 0);
 350                 return;
 351         }
 352
 353         LyXText const & t = *bv_->text;
 354
 355         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", first_y "
 356                 << t.first_y << ", default height " << t.defaultHeight() << endl;
 357
 358         workarea().setScrollbarParams(t.height, t.first_y, t.defaultHeight());
 359 }
 360
 361
 362 void BufferView::Pimpl::scrollDocView(int value)
 363 {
 364         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 365
 366         if (!buffer_)
 367                 return;
 368
 369         screen().draw(bv_->text, bv_, value);
 370
 371         if (!lyxrc.cursor_follows_scrollbar)
 372                 return;
 373
 374         LyXText * vbt = bv_->text;
 375
 376         int const height = vbt->defaultHeight();
 377         int const first = static_cast<int>((bv_->text->first_y + height));
 378         int const last = static_cast<int>((bv_->text->first_y + workarea().workHeight() - height));
 379
 380         if (vbt->cursor.y() < first)
 381                 vbt->setCursorFromCoordinates(bv_, 0, first);
 382         else if (vbt->cursor.y() > last)
 383                 vbt->setCursorFromCoordinates(bv_, 0, last);
 384 }
 385
 386
 387 int BufferView::Pimpl::scroll(long time)
 388 {
 389         if (!buffer_)
 390                 return 0;
 391
 392         LyXText const * t = bv_->text;
 393
 394         double const diff = t->defaultHeight()
 395                 + double(time) * double(time) * 0.125;
 396
 397         scrollDocView(int(diff));
 398         workarea().setScrollbarParams(t->height, t->first_y, t->defaultHeight());
 399         return 0;
 400 }
 401
 402
 403 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 404                                          key_modifier::state state)
 405 {
 406         bv_->owner()->getLyXFunc().processKeySym(key, state);
 407 }
 408
 409
 410 void BufferView::Pimpl::selectionRequested()
 411 {
 412         static string sel;
 413
 414         if (!available())
 415                 return;
 416
 417         LyXText * text = bv_->getLyXText();
 418
 419         if (text->selection.set() &&
 420                 (!bv_->text->xsel_cache.set() ||
 421                  text->selection.start != bv_->text->xsel_cache.start ||
 422                  text->selection.end != bv_->text->xsel_cache.end))
 423         {
 424                 bv_->text->xsel_cache = text->selection;
 425                 sel = text->selectionAsString(bv_->buffer(), false);
 426         } else if (!text->selection.set()) {
 427                 sel = string();
 428                 bv_->text->xsel_cache.set(false);
 429         }
 430         if (!sel.empty()) {
 431                 workarea().putClipboard(sel);
 432         }
 433 }
 434
 435
 436 void BufferView::Pimpl::selectionLost()
 437 {
 438         if (available()) {
 439                 hideCursor();
 440                 toggleSelection();
 441                 bv_->getLyXText()->clearSelection();
 442                 showCursor();
 443                 bv_->text->xsel_cache.set(false);
 444         }
 445 }
 446
 447
 448 void BufferView::Pimpl::workAreaResize()
 449 {
 450         static int work_area_width;
 451         static int work_area_height;
 452
 453         bool const widthChange = workarea().workWidth() != work_area_width;
 454         bool const heightChange = workarea().workHeight() != work_area_height;
 455
 456         // update from work area
 457         work_area_width = workarea().workWidth();
 458         work_area_height = workarea().workHeight();
 459
 460         if (buffer_ != 0) {
 461                 if (widthChange) {
 462                         // The visible LyXView need a resize
 463                         resizeCurrentBuffer();
 464
 465                         // Remove all texts from the textcache
 466                         // This is not _really_ what we want to do. What
 467                         // we really want to do is to delete in textcache
 468                         // that does not have a BufferView with matching
 469                         // width, but as long as we have only one BufferView
 470                         // deleting all gives the same result.
 471                         if (lyxerr.debugging())
 472                                 textcache.show(lyxerr, "Expose delete all");
 473                         textcache.clear();
 474                         // FIXME: this is already done in resizeCurrentBuffer() ??
 475                         buffer_->resizeInsets(bv_);
 476                 } else if (heightChange) {
 477                         // fitCursor() ensures we don't jump back
 478                         // to the start of the document on vertical
 479                         // resize
 480                         fitCursor();
 481                 }
 482         }
 483
 484         if (widthChange || heightChange) {
 485                 repaint();
 486         }
 487
 488         // always make sure that the scrollbar is sane.
 489         updateScrollbar();
 490         owner_->updateLayoutChoice();
 491         return;
 492 }
 493
 494
 495 void BufferView::Pimpl::update()
 496 {
 497         if (!bv_->theLockingInset() || !bv_->theLockingInset()->nodraw()) {
 498                 LyXText::text_status st = bv_->text->status();
 499                 screen().update(bv_->text, bv_);
 500                 bool fitc = false;
 501                 while (bv_->text->status() == LyXText::CHANGED_IN_DRAW) {
 502                         bv_->text->fullRebreak(bv_);
 503                         st = LyXText::NEED_MORE_REFRESH;
 504                         bv_->text->setCursor(bv_, bv_->text->cursor.par(),
 505                                              bv_->text->cursor.pos());
 506                         if (bv_->text->selection.set()) {
 507                                 bv_->text->setCursor(bv_, bv_->text->selection.start,
 508                                                      bv_->text->selection.start.par(),
 509                                                      bv_->text->selection.start.pos());
 510                                 bv_->text->setCursor(bv_, bv_->text->selection.end,
 511                                                      bv_->text->selection.end.par(),
 512                                                      bv_->text->selection.end.pos());
 513                         }
 514                         fitc = true;
 515                         bv_->text->status(bv_, st);
 516                         screen().update(bv_->text, bv_);
 517                 }
 518                 // do this here instead of in the screen::update because of
 519                 // the above loop!
 520                 bv_->text->status(bv_, LyXText::UNCHANGED);
 521                 if (fitc)
 522                         fitCursor();
 523         }
 524 }
 525
 526 // Values used when calling update:
 527 // -3 - update
 528 // -2 - update, move sel_cursor if selection, fitcursor
 529 // -1 - update, move sel_cursor if selection, fitcursor, mark dirty
 530 //  0 - update, move sel_cursor if selection, fitcursor
 531 //  1 - update, move sel_cursor if selection, fitcursor, mark dirty
 532 //  3 - update, move sel_cursor if selection
 533 //
 534 // update -
 535 // a simple redraw of the parts that need refresh
 536 //
 537 // move sel_cursor if selection -
 538 // the text's sel_cursor is moved if there is selection is progress
 539 //
 540 // fitcursor -
 541 // fitCursor() is called and the scrollbar updated
 542 //
 543 // mark dirty -
 544 // the buffer is marked dirty.
 545 //
 546 // enum {
 547 //       UPDATE = 0,
 548 //       SELECT = 1,
 549 //       FITCUR = 2,
 550 //       CHANGE = 4
 551 // };
 552 //
 553 // UPDATE_ONLY = UPDATE;
 554 // UPDATE_SELECT = UPDATE | SELECT;
 555 // UPDATE_SELECT_MOVE = UPDATE | SELECT | FITCUR;
 556 // UPDATE_SELECT_MOVE_AFTER_CHANGE = UPDATE | SELECT | FITCUR | CHANGE;
 557 //
 558 // update(-3) -> update(0)         -> update(0) -> update(UPDATE)
 559 // update(-2) -> update(1 + 2)     -> update(3) -> update(SELECT|FITCUR)
 560 // update(-1) -> update(1 + 2 + 4) -> update(7) -> update(SELECT|FITCUR|CHANGE)
 561 // update(1)  -> update(1 + 2 + 4) -> update(7) -> update(SELECT|FITCUR|CHANGE)
 562 // update(3)  -> update(1)         -> update(1) -> update(SELECT)
 563
 564 void BufferView::Pimpl::update(LyXText * text, BufferView::UpdateCodes f)
 565 {
 566         owner_->updateLayoutChoice();
 567
 568         if (!text->selection.set() && (f & SELECT)) {
 569                 text->selection.cursor = text->cursor;
 570         }
 571
 572         text->fullRebreak(bv_);
 573
 574         if (text->inset_owner) {
 575                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 576                 updateInset(text->inset_owner, false);
 577         } else {
 578                 update();
 579         }
 580
 581         if ((f & FITCUR)) {
 582                 fitCursor();
 583         }
 584
 585         if ((f & CHANGE)) {
 586                 buffer_->markDirty();
 587         }
 588 }
 589
 590
 591 // Callback for cursor timer
 592 void BufferView::Pimpl::cursorToggle()
 593 {
 594         if (!buffer_) {
 595                 cursor_timeout.restart();
 596                 return;
 597         }
 598
 599         /* FIXME */
 600         extern void reapSpellchecker(void);
 601         reapSpellchecker();
 602
 603         if (!bv_->theLockingInset()) {
 604                 screen().cursorToggle(bv_);
 605         } else {
 606                 bv_->theLockingInset()->toggleInsetCursor(bv_);
 607         }
 608
 609         cursor_timeout.restart();
 610 }
 611
 612
 613 bool BufferView::Pimpl::available() const
 614 {
 615         if (buffer_ && bv_->text)
 616                 return true;
 617         return false;
 618 }
 619
 620
 621 void BufferView::Pimpl::beforeChange(LyXText * text)
 622 {
 623         toggleSelection();
 624         text->clearSelection();
 625 }
 626
 627
 628 void BufferView::Pimpl::savePosition(unsigned int i)
 629 {
 630         if (i >= saved_positions_num)
 631                 return;
 632         saved_positions[i] = Position(buffer_->fileName(),
 633                                       bv_->text->cursor.par()->id(),
 634                                       bv_->text->cursor.pos());
 635         if (i > 0) {
 636                 ostringstream str;
 637                 str << _("Saved bookmark") << ' ' << i;
 638                 owner_->message(str.str().c_str());
 639         }
 640 }
 641
 642
 643 void BufferView::Pimpl::restorePosition(unsigned int i)
 644 {
 645         if (i >= saved_positions_num)
 646                 return;
 647
 648         string const fname = saved_positions[i].filename;
 649
 650         beforeChange(bv_->text);
 651
 652         if (fname != buffer_->fileName()) {
 653                 Buffer * b = bufferlist.exists(fname) ?
 654                         bufferlist.getBuffer(fname) :
 655                         bufferlist.loadLyXFile(fname); // don't ask, just load it
 656                 if (b != 0) buffer(b);
 657         }
 658
 659         Paragraph * par = buffer_->getParFromID(saved_positions[i].par_id);
 660         if (!par)
 661                 return;
 662
 663         bv_->text->setCursor(bv_, par,
 664                              min(par->size(), saved_positions[i].par_pos));
 665
 666         update(bv_->text, BufferView::SELECT | BufferView::FITCUR);
 667         if (i > 0) {
 668                 ostringstream str;
 669                 str << _("Moved to bookmark") << ' ' << i;
 670                 owner_->message(str.str().c_str());
 671         }
 672 }
 673
 674
 675 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 676 {
 677         if (i >= saved_positions_num)
 678                 return false;
 679
 680         return !saved_positions[i].filename.empty();
 681 }
 682
 683
 684 void BufferView::Pimpl::switchKeyMap()
 685 {
 686         if (!lyxrc.rtl_support)
 687                 return;
 688
 689         LyXText * text = bv_->getLyXText();
 690         if (text->real_current_font.isRightToLeft()
 691             && !(bv_->theLockingInset()
 692                  && bv_->theLockingInset()->lyxCode() == Inset::ERT_CODE))
 693         {
 694                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 695                         owner_->getIntl().KeyMapSec();
 696         } else {
 697                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 698                         owner_->getIntl().KeyMapPrim();
 699         }
 700 }
 701
 702
 703 void BufferView::Pimpl::insetUnlock()
 704 {
 705         if (bv_->theLockingInset()) {
 706                 bv_->theLockingInset()->insetUnlock(bv_);
 707                 bv_->theLockingInset(0);
 708                 finishUndo();
 709         }
 710 }
 711
 712
 713 void BufferView::Pimpl::showCursor()
 714 {
 715         if (bv_->theLockingInset())
 716                 bv_->theLockingInset()->showInsetCursor(bv_);
 717         else
 718                 screen().showCursor(bv_->text, bv_);
 719 }
 720
 721
 722 void BufferView::Pimpl::hideCursor()
 723 {
 724         if (!bv_->theLockingInset())
 725                 screen().hideCursor();
 726 }
 727
 728
 729 void BufferView::Pimpl::toggleSelection(bool b)
 730 {
 731         if (bv_->theLockingInset())
 732                 bv_->theLockingInset()->toggleSelection(bv_, b);
 733         screen().toggleSelection(bv_->text, bv_, b);
 734 }
 735
 736
 737 void BufferView::Pimpl::toggleToggle()
 738 {
 739         screen().toggleToggle(bv_->text, bv_);
 740 }
 741
 742
 743 void BufferView::Pimpl::center()
 744 {
 745         LyXText * t = bv_->text;
 746
 747         beforeChange(t);
 748         int const half_height = workarea().workHeight() / 2;
 749         int new_y = 0;
 750
 751         if (t->cursor.y() > half_height) {
 752                 new_y = t->cursor.y() - half_height;
 753         }
 754
 755         // FIXME: can we do this w/o calling screen directly ?
 756         // This updates first_y but means the fitCursor() call
 757         // from the update(FITCUR) doesn't realise that we might
 758         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 759         // the scrollbar to be updated as it should, so we have
 760         // to do it manually. Any operation that does a center()
 761         // and also might have moved first_y must make sure to call
 762         // updateScrollbar() currently. Never mind that this is a
 763         // pretty obfuscated way of updating t->first_y
 764         screen().draw(t, bv_, new_y);
 765
 766         update(t, BufferView::SELECT | BufferView::FITCUR);
 767 }
 768
 769
 770 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 771 {
 772         workarea().putClipboard(stuff);
 773 }
 774
 775
 776 /*
 777  * Dispatch functions for actions which can be valid for BufferView->text
 778  * and/or InsetText->text!!!
 779  */
 780
 781
 782 Inset * BufferView::Pimpl::getInsetByCode(Inset::Code code)
 783 {
 784 #if 0
 785         LyXCursor cursor = bv_->getLyXText()->cursor;
 786         Buffer::inset_iterator it =
 787                 find_if(Buffer::inset_iterator(
 788                         cursor.par(), cursor.pos()),
 789                         buffer_->inset_iterator_end(),
 790                         lyx::compare_memfun(&Inset::lyxCode, code));
 791         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 792 #else
 793         // Ok, this is a little bit too brute force but it
 794         // should work for now. Better infrastructure is comming. (Lgb)
 795
 796         Buffer * b = bv_->buffer();
 797         LyXCursor cursor = bv_->getLyXText()->cursor;
 798
 799         Buffer::inset_iterator beg = b->inset_iterator_begin();
 800         Buffer::inset_iterator end = b->inset_iterator_end();
 801
 802         bool cursor_par_seen = false;
 803
 804         for (; beg != end; ++beg) {
 805                 if (beg.getPar() == cursor.par()) {
 806                         cursor_par_seen = true;
 807                 }
 808                 if (cursor_par_seen) {
 809                         if (beg.getPar() == cursor.par()
 810                             && beg.getPos() >= cursor.pos()) {
 811                                 break;
 812                         } else if (beg.getPar() != cursor.par()) {
 813                                 break;
 814                         }
 815                 }
 816
 817         }
 818         if (beg != end) {
 819                 // Now find the first inset that matches code.
 820                 for (; beg != end; ++beg) {
 821                         if (beg->lyxCode() == code) {
 822                                 return &(*beg);
 823                         }
 824                 }
 825         }
 826         return 0;
 827 #endif
 828 }
 829
 830
 831 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 832 {
 833         string filename = filen;
 834
 835         if (filename.empty()) {
 836                 // Launch a file browser
 837                 string initpath = lyxrc.document_path;
 838
 839                 if (available()) {
 840                         string const trypath = owner_->buffer()->filePath();
 841                         // If directory is writeable, use this as default.
 842                         if (IsDirWriteable(trypath))
 843                                 initpath = trypath;
 844                 }
 845
 846                 FileDialog fileDlg(bv_->owner(),
 847                                    _("Select LyX document to insert"),
 848                         LFUN_FILE_INSERT,
 849                         make_pair(string(_("Documents|#o#O")),
 850                                   string(lyxrc.document_path)),
 851                         make_pair(string(_("Examples|#E#e")),
 852                                   string(AddPath(system_lyxdir, "examples"))));
 853
 854                 FileDialog::Result result =
 855                         fileDlg.Select(initpath,
 856                                        _("*.lyx| LyX Documents (*.lyx)"));
 857
 858                 if (result.first == FileDialog::Later)
 859                         return;
 860
 861                 filename = result.second;
 862
 863                 // check selected filename
 864                 if (filename.empty()) {
 865                         owner_->message(_("Canceled."));
 866                         return;
 867                 }
 868         }
 869
 870         // get absolute path of file and add ".lyx" to the filename if
 871         // necessary
 872         filename = FileSearch(string(), filename, "lyx");
 873
 874         string const disp_fn(MakeDisplayPath(filename));
 875
 876         ostringstream s1;
 877         s1 << _("Inserting document") << ' '
 878            << disp_fn << " ...";
 879         owner_->message(s1.str().c_str());
 880         bool const res = bv_->insertLyXFile(filename);
 881         if (res) {
 882                 ostringstream str;
 883                 str << _("Document") << ' ' << disp_fn
 884                     << ' ' << _("inserted.");
 885                 owner_->message(str.str().c_str());
 886         } else {
 887                 ostringstream str;
 888                 str << _("Could not insert document") << ' '
 889                     << disp_fn;
 890                 owner_->message(str.str().c_str());
 891         }
 892 }
 893
 894
 895 bool BufferView::Pimpl::dispatch(FuncRequest const & ev)
 896 {
 897         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 898                 << " action[" << ev.action <<"]"
 899                 << " arg[" << ev.argument << "]"
 900                 << " x[" << ev.x << "]"
 901                 << " y[" << ev.y << "]"
 902                 << " button[" << ev.button() << "]"
 903                 << endl;
 904
 905         // e.g. Qt mouse press when no buffer
 906         if (!buffer_)
 907                 return false;
 908
 909         LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
 910
 911         switch (ev.action) {
 912
 913         case LFUN_SCROLL_INSET:
 914                 // this is not handled here as this function is only active
 915                 // if we have a locking_inset and that one is (or contains)
 916                 // a tabular-inset
 917                 break;
 918
 919         case LFUN_INSET_GRAPHICS:
 920         {
 921                 Inset * new_inset = new InsetGraphics;
 922                 if (!insertInset(new_inset)) {
 923                         delete new_inset;
 924                 } else {
 925                         // this is need because you don't use a inset->Edit()
 926                         updateInset(new_inset, true);
 927                         new_inset->edit(bv_);
 928                 }
 929                 break;
 930         }
 931
 932         case LFUN_LAYOUT_COPY:
 933                 bv_->copyEnvironment();
 934                 break;
 935
 936         case LFUN_LAYOUT_PASTE:
 937                 bv_->pasteEnvironment();
 938                 switchKeyMap();
 939                 break;
 940
 941         case LFUN_DEPTH_MIN:
 942                 changeDepth(bv_, bv_->getLyXText(), -1);
 943                 break;
 944
 945         case LFUN_DEPTH_PLUS:
 946                 changeDepth(bv_, bv_->getLyXText(), 1);
 947                 break;
 948
 949         case LFUN_FREE:
 950                 owner_->getDialogs().setUserFreeFont();
 951                 break;
 952
 953         case LFUN_FILE_INSERT:
 954                 MenuInsertLyXFile(ev.argument);
 955                 break;
 956
 957         case LFUN_FILE_INSERT_ASCII_PARA:
 958                 InsertAsciiFile(bv_, ev.argument, true);
 959                 break;
 960
 961         case LFUN_FILE_INSERT_ASCII:
 962                 InsertAsciiFile(bv_, ev.argument, false);
 963                 break;
 964
 965         case LFUN_LANGUAGE:
 966                 lang(bv_, ev.argument);
 967                 switchKeyMap();
 968                 owner_->view_state_changed();
 969                 break;
 970
 971         case LFUN_EMPH:
 972                 emph(bv_);
 973                 owner_->view_state_changed();
 974                 break;
 975
 976         case LFUN_BOLD:
 977                 bold(bv_);
 978                 owner_->view_state_changed();
 979                 break;
 980
 981         case LFUN_NOUN:
 982                 noun(bv_);
 983                 owner_->view_state_changed();
 984                 break;
 985
 986         case LFUN_CODE:
 987                 code(bv_);
 988                 owner_->view_state_changed();
 989                 break;
 990
 991         case LFUN_SANS:
 992                 sans(bv_);
 993                 owner_->view_state_changed();
 994                 break;
 995
 996         case LFUN_ROMAN:
 997                 roman(bv_);
 998                 owner_->view_state_changed();
 999                 break;
1000
1001         case LFUN_DEFAULT:
1002                 styleReset(bv_);
1003                 owner_->view_state_changed();
1004                 break;
1005
1006         case LFUN_UNDERLINE:
1007                 underline(bv_);
1008                 owner_->view_state_changed();
1009                 break;
1010
1011         case LFUN_FONT_SIZE:
1012                 fontSize(bv_, ev.argument);
1013                 owner_->view_state_changed();
1014                 break;
1015
1016         case LFUN_FONT_STATE:
1017                 owner_->getLyXFunc().setMessage(currentState(bv_));
1018                 break;
1019
1020         case LFUN_INSERT_LABEL:
1021                 MenuInsertLabel(bv_, ev.argument);
1022                 break;
1023
1024         case LFUN_REF_INSERT:
1025                 if (ev.argument.empty()) {
1026                         InsetCommandParams p("ref");
1027                         owner_->getDialogs().createRef(p.getAsString());
1028                 } else {
1029                         InsetCommandParams p;
1030                         p.setFromString(ev.argument);
1031
1032                         InsetRef * inset = new InsetRef(p, *buffer_);
1033                         if (!insertInset(inset))
1034                                 delete inset;
1035                         else
1036                                 updateInset(inset, true);
1037                 }
1038                 break;
1039
1040         case LFUN_BOOKMARK_SAVE:
1041                 savePosition(strToUnsignedInt(ev.argument));
1042                 break;
1043
1044         case LFUN_BOOKMARK_GOTO:
1045                 restorePosition(strToUnsignedInt(ev.argument));
1046                 break;
1047
1048         case LFUN_REF_GOTO:
1049         {
1050                 string label = ev.argument;
1051                 if (label.empty()) {
1052                         InsetRef * inset =
1053                                 static_cast<InsetRef*>(getInsetByCode(Inset::REF_CODE));
1054                         if (inset) {
1055                                 label = inset->getContents();
1056                                 savePosition(0);
1057                         }
1058                 }
1059
1060                 if (!label.empty()) {
1061                         //bv_->savePosition(0);
1062                         if (!bv_->gotoLabel(label))
1063                                 Alert::alert(_("Error"),
1064                                            _("Couldn't find this label"),
1065                                            _("in current document."));
1066                 }
1067         }
1068         break;
1069
1070         // --- accented characters ---------------------------
1071
1072         case LFUN_UMLAUT:
1073         case LFUN_CIRCUMFLEX:
1074         case LFUN_GRAVE:
1075         case LFUN_ACUTE:
1076         case LFUN_TILDE:
1077         case LFUN_CEDILLA:
1078         case LFUN_MACRON:
1079         case LFUN_DOT:
1080         case LFUN_UNDERDOT:
1081         case LFUN_UNDERBAR:
1082         case LFUN_CARON:
1083         case LFUN_SPECIAL_CARON:
1084         case LFUN_BREVE:
1085         case LFUN_TIE:
1086         case LFUN_HUNG_UMLAUT:
1087         case LFUN_CIRCLE:
1088         case LFUN_OGONEK:
1089                 if (ev.argument.empty()) {
1090                         // As always...
1091                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1092                 } else {
1093                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1094                         owner_->getIntl().getTransManager()
1095                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1096                         update(bv_->getLyXText(),
1097                                BufferView::SELECT
1098                                | BufferView::FITCUR
1099                                | BufferView::CHANGE);
1100                 }
1101                 break;
1102
1103         case LFUN_MATH_MACRO:
1104         case LFUN_MATH_DELIM:
1105         case LFUN_INSERT_MATRIX:
1106         case LFUN_INSERT_MATH:
1107         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1108         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1109         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1110         case LFUN_GREEK:                 // Insert a single greek letter
1111                 mathDispatch(FuncRequest(bv_, ev.action, ev.argument));
1112                 break;
1113
1114         case LFUN_CITATION_INSERT:
1115         {
1116                 InsetCommandParams p;
1117                 p.setFromString(ev.argument);
1118
1119                 InsetCitation * inset = new InsetCitation(p);
1120                 if (!insertInset(inset))
1121                         delete inset;
1122                 else
1123                         updateInset(inset, true);
1124         }
1125         break;
1126
1127         case LFUN_INSERT_BIBTEX:
1128         {
1129                 // ale970405+lasgoutt970425
1130                 // The argument can be up to two tokens separated
1131                 // by a space. The first one is the bibstyle.
1132                 string const db = token(ev.argument, ' ', 0);
1133                 string bibstyle = token(ev.argument, ' ', 1);
1134                 if (bibstyle.empty())
1135                         bibstyle = "plain";
1136
1137                 InsetCommandParams p("BibTeX", db, bibstyle);
1138                 InsetBibtex * inset = new InsetBibtex(p);
1139
1140                 if (insertInset(inset)) {
1141                         if (ev.argument.empty())
1142                                 inset->edit(bv_);
1143                 } else
1144                         delete inset;
1145         }
1146         break;
1147
1148         // BibTeX data bases
1149         case LFUN_BIBDB_ADD:
1150         {
1151                 InsetBibtex * inset =
1152                         static_cast<InsetBibtex*>(getInsetByCode(Inset::BIBTEX_CODE));
1153                 if (inset) {
1154                         inset->addDatabase(ev.argument);
1155                 }
1156         }
1157         break;
1158
1159         case LFUN_BIBDB_DEL:
1160         {
1161                 InsetBibtex * inset =
1162                         static_cast<InsetBibtex*>(getInsetByCode(Inset::BIBTEX_CODE));
1163                 if (inset)
1164                         inset->delDatabase(ev.argument);
1165         }
1166         break;
1167
1168         case LFUN_BIBTEX_STYLE:
1169         {
1170                 InsetBibtex * inset =
1171                         static_cast<InsetBibtex*>(getInsetByCode(Inset::BIBTEX_CODE));
1172                 if (inset)
1173                         inset->setOptions(ev.argument);
1174         }
1175         break;
1176
1177         case LFUN_CHILD_INSERT:
1178         {
1179                 InsetInclude::Params p;
1180                 p.cparams.setFromString(ev.argument);
1181                 p.masterFilename_ = buffer_->fileName();
1182
1183                 InsetInclude * inset = new InsetInclude(p);
1184                 if (!insertInset(inset))
1185                         delete inset;
1186                 else {
1187                         updateInset(inset, true);
1188                         bv_->owner()->getDialogs().showInclude(inset);
1189                 }
1190         }
1191         break;
1192
1193         case LFUN_FLOAT_LIST:
1194                 if (tclass.floats().typeExist(ev.argument)) {
1195                         Inset * inset = new InsetFloatList(ev.argument);
1196                         if (!insertInset(inset, tclass.defaultLayoutName()))
1197                                 delete inset;
1198                 } else {
1199                         lyxerr << "Non-existent float type: "
1200                                << ev.argument << endl;
1201                 }
1202                 break;
1203
1204         case LFUN_THESAURUS_ENTRY:
1205         {
1206                 string arg = ev.argument;
1207
1208                 if (arg.empty()) {
1209                         arg = bv_->getLyXText()->selectionAsString(buffer_,
1210                                                                    false);
1211
1212                         // FIXME
1213                         if (arg.size() > 100 || arg.empty()) {
1214                                 // Get word or selection
1215                                 bv_->getLyXText()->selectWordWhenUnderCursor(bv_, LyXText::WHOLE_WORD);
1216                                 arg = bv_->getLyXText()->selectionAsString(buffer_, false);
1217                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1218                         }
1219                 }
1220
1221                 bv_->owner()->getDialogs().showThesaurus(arg);
1222         }
1223                 break;
1224
1225         case LFUN_UNKNOWN_ACTION:
1226                 ev.errorMessage(N_("Unknown function!"));
1227                 break;
1228
1229         default:
1230                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1231         } // end of switch
1232
1233         return true;
1234 }
1235
1236
1237 bool BufferView::Pimpl::insertInset(Inset * inset, string const & lout)
1238 {
1239         // if we are in a locking inset we should try to insert the
1240         // inset there otherwise this is a illegal function now
1241         if (bv_->theLockingInset()) {
1242                 if (bv_->theLockingInset()->insetAllowed(inset))
1243                         return bv_->theLockingInset()->insertInset(bv_, inset);
1244                 return false;
1245         }
1246
1247         // not quite sure if we want this...
1248         setCursorParUndo(bv_);
1249         freezeUndo();
1250
1251         beforeChange(bv_->text);
1252         if (!lout.empty()) {
1253                 update(bv_->text, BufferView::SELECT|BufferView::FITCUR);
1254                 bv_->text->breakParagraph(bv_);
1255                 update(bv_->text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
1256
1257                 if (!bv_->text->cursor.par()->empty()) {
1258                         bv_->text->cursorLeft(bv_);
1259
1260                         bv_->text->breakParagraph(bv_);
1261                         update(bv_->text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
1262                 }
1263
1264                 string lres = lout;
1265                 LyXTextClass const & tclass =
1266                         buffer_->params.getLyXTextClass();
1267                 bool hasLayout = tclass.hasLayout(lres);
1268                 string lay = tclass.defaultLayoutName();
1269
1270                 if (hasLayout != false) {
1271                         // layout found
1272                         lay = lres;
1273                 } else {
1274                         // layout not fount using default
1275                         lay = tclass.defaultLayoutName();
1276                 }
1277
1278                 bv_->text->setLayout(bv_, lay);
1279
1280                 bv_->text->setParagraph(bv_, 0, 0,
1281                                    0, 0,
1282                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1283                                    Spacing(),
1284                                    LYX_ALIGN_LAYOUT,
1285                                    string(),
1286                                    0);
1287                 update(bv_->text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
1288         }
1289
1290         bv_->text->insertInset(bv_, inset);
1291         update(bv_->text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
1292
1293         unFreezeUndo();
1294         return true;
1295 }
1296
1297
1298 void BufferView::Pimpl::updateInset(Inset * inset, bool mark_dirty)
1299 {
1300         if (!inset || !available())
1301                 return;
1302
1303         // first check for locking insets
1304         if (bv_->theLockingInset()) {
1305                 if (bv_->theLockingInset() == inset) {
1306                         if (bv_->text->updateInset(bv_, inset)) {
1307                                 update();
1308                                 if (mark_dirty) {
1309                                         buffer_->markDirty();
1310                                 }
1311                                 updateScrollbar();
1312                                 return;
1313                         }
1314                 } else if (bv_->theLockingInset()->updateInsetInInset(bv_, inset)) {
1315                         if (bv_->text->updateInset(bv_,  bv_->theLockingInset())) {
1316                                 update();
1317                                 if (mark_dirty) {
1318                                         buffer_->markDirty();
1319                                 }
1320                                 updateScrollbar();
1321                                 return;
1322                         }
1323                 }
1324         }
1325
1326         // then check if the inset is a top_level inset (has no owner)
1327         // if yes do the update as always otherwise we have to update the
1328         // toplevel inset where this inset is inside
1329         Inset * tl_inset = inset;
1330         while (tl_inset->owner())
1331                 tl_inset = tl_inset->owner();
1332         hideCursor();
1333         if (tl_inset == inset) {
1334                 update(bv_->text, BufferView::UPDATE);
1335                 if (bv_->text->updateInset(bv_, inset)) {
1336                         if (mark_dirty) {
1337                                 update(bv_->text,
1338                                        BufferView::SELECT
1339                                        | BufferView::FITCUR
1340                                        | BufferView::CHANGE);
1341                         } else {
1342                                 update(bv_->text, SELECT);
1343                         }
1344                         return;
1345                 }
1346         } else if (static_cast<UpdatableInset *>(tl_inset)
1347                            ->updateInsetInInset(bv_, inset))
1348         {
1349                 if (bv_->text->updateInset(bv_, tl_inset)) {
1350                         update();
1351                         updateScrollbar();
1352                 }
1353         }
1354 }