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 #include "BufferView_pimpl.h"
  12 #include "bufferlist.h"
  13 #include "buffer.h"
  14 #include "buffer_funcs.h"
  15 #include "bufferview_funcs.h"
  16 #include "lfuns.h"
  17 #include "debug.h"
  18 #include "factory.h"
  19 #include "FloatList.h"
  20 #include "funcrequest.h"
  21 #include "gettext.h"
  22 #include "intl.h"
  23 #include "iterators.h"
  24 #include "Lsstream.h"
  25 #include "lyx_cb.h" // added for Dispatch functions
  26 #include "lyx_main.h"
  27 #include "lyxfind.h"
  28 #include "lyxfunc.h"
  29 #include "lyxtext.h"
  30 #include "lyxrc.h"
  31 #include "lyxrow.h"
  32 #include "lastfiles.h"
  33 #include "paragraph.h"
  34 #include "ParagraphParameters.h"
  35 #include "TextCache.h"
  36 #include "undo_funcs.h"
  37
  38 #include "insets/insetfloatlist.h"
  39 #include "insets/insetgraphics.h"
  40 #include "insets/insetinclude.h"
  41 #include "insets/insetref.h"
  42 #include "insets/insettext.h"
  43
  44 #include "frontends/Alert.h"
  45 #include "frontends/Dialogs.h"
  46 #include "frontends/FileDialog.h"
  47 #include "frontends/LyXView.h"
  48 #include "frontends/LyXScreenFactory.h"
  49 #include "frontends/mouse_state.h"
  50 #include "frontends/screen.h"
  51 #include "frontends/WorkArea.h"
  52 #include "frontends/WorkAreaFactory.h"
  53
  54 #include "mathed/formulabase.h"
  55
  56 #include "graphics/Previews.h"
  57
  58 #include "support/LAssert.h"
  59 #include "support/tostr.h"
  60 #include "support/filetools.h"
  61
  62 #include <boost/bind.hpp>
  63 #include <boost/signals/connection.hpp>
  64
  65 #include <unistd.h>
  66 #include <sys/wait.h>
  67
  68
  69 using std::vector;
  70 using std::find_if;
  71 using std::find;
  72 using std::pair;
  73 using std::endl;
  74 using std::make_pair;
  75 using std::min;
  76
  77 using lyx::pos_type;
  78 using namespace bv_funcs;
  79
  80 extern BufferList bufferlist;
  81
  82
  83 namespace {
  84
  85 unsigned int const saved_positions_num = 20;
  86
  87 // All the below connection objects are needed because of a bug in some
  88 // versions of GCC (<=2.96 are on the suspects list.) By having and assigning
  89 // to these connections we avoid a segfault upon startup, and also at exit.
  90 // (Lgb)
  91
  92 boost::signals::connection dispatchcon;
  93 boost::signals::connection timecon;
  94 boost::signals::connection doccon;
  95 boost::signals::connection resizecon;
  96 boost::signals::connection kpresscon;
  97 boost::signals::connection selectioncon;
  98 boost::signals::connection lostcon;
  99
 100
 101 } // anon namespace
 102
 103
 104 BufferView::Pimpl::Pimpl(BufferView * bv, LyXView * owner,
 105              int xpos, int ypos, int width, int height)
 106         : bv_(bv), owner_(owner), buffer_(0), cursor_timeout(400),
 107           using_xterm_cursor(false)
 108 {
 109         workarea_.reset(WorkAreaFactory::create(xpos, ypos, width, height));
 110         screen_.reset(LyXScreenFactory::create(workarea()));
 111
 112         // Setup the signals
 113         doccon = workarea().scrollDocView
 114                 .connect(boost::bind(&BufferView::Pimpl::scrollDocView, this, _1));
 115         resizecon = workarea().workAreaResize
 116                 .connect(boost::bind(&BufferView::Pimpl::workAreaResize, this));
 117         dispatchcon = workarea().dispatch
 118                 .connect(boost::bind(&BufferView::Pimpl::workAreaDispatch, this, _1));
 119         kpresscon = workarea().workAreaKeyPress
 120                 .connect(boost::bind(&BufferView::Pimpl::workAreaKeyPress, this, _1, _2));
 121         selectioncon = workarea().selectionRequested
 122                 .connect(boost::bind(&BufferView::Pimpl::selectionRequested, this));
 123         lostcon = workarea().selectionLost
 124                 .connect(boost::bind(&BufferView::Pimpl::selectionLost, this));
 125
 126         timecon = cursor_timeout.timeout
 127                 .connect(boost::bind(&BufferView::Pimpl::cursorToggle, this));
 128         cursor_timeout.start();
 129         saved_positions.resize(saved_positions_num);
 130 }
 131
 132
 133
 134 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 135 {
 136         // get absolute path of file and add ".lyx" to the filename if
 137         // necessary
 138         string s = FileSearch(string(), filename, "lyx");
 139         if (s.empty()) {
 140                 s = filename;
 141         }
 142
 143         // file already open?
 144         if (bufferlist.exists(s)) {
 145                 string const file = MakeDisplayPath(s, 20);
 146                 string text = bformat(_("The document %1$s is already "
 147                                         "loaded.\n\nDo you want to revert "
 148                                         "to the saved version?"), file);
 149                 int const ret = Alert::prompt(_("Revert to saved document?"),
 150                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 151
 152                 if (ret != 0) {
 153                         buffer(bufferlist.getBuffer(s));
 154                         return true;
 155                 } else {
 156                         // FIXME: should be LFUN_REVERT
 157                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 158                                 return false;
 159                         // Fall through to new load. (Asger)
 160                 }
 161         }
 162         Buffer * b = bufferlist.newBuffer(s);
 163
 164         //this is the point to attach to the error signal in the buffer
 165
 166         if (!::loadLyXFile(b, s)) {
 167                 bufferlist.release(b);
 168                 string text = bformat(_("The document %1$s does "
 169                                         "not yet exist.\n\n"
 170                                         "Do you want to create "
 171                                         "a new document?"), s);
 172                 int const ret = Alert::prompt(_("Create new document?"),
 173                          text, 0, 1, _("&Create"), _("Cancel"));
 174
 175                 if (ret == 0) {
 176                         bufferlist.close(buffer_, false);
 177                         buffer(newFile(s, string(), true));
 178                 }
 179         }
 180
 181         buffer(b);
 182
 183         if (tolastfiles)
 184                 lastfiles->newFile(b->fileName());
 185
 186         return true;
 187 }
 188
 189 WorkArea & BufferView::Pimpl::workarea() const
 190 {
 191         return *workarea_.get();
 192 }
 193
 194
 195 LyXScreen & BufferView::Pimpl::screen() const
 196 {
 197         return *screen_.get();
 198 }
 199
 200
 201 Painter & BufferView::Pimpl::painter() const
 202 {
 203         return workarea().getPainter();
 204 }
 205
 206
 207 void BufferView::Pimpl::buffer(Buffer * b)
 208 {
 209         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 210                             << b << ')' << endl;
 211         if (buffer_) {
 212                 buffer_->delUser(bv_);
 213
 214                 // Put the old text into the TextCache, but
 215                 // only if the buffer is still loaded.
 216                 // Also set the owner of the test to 0
 217                 //              bv_->text->owner(0);
 218                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 219                 if (lyxerr.debugging())
 220                         textcache.show(lyxerr, "BufferView::buffer");
 221
 222                 bv_->text = 0;
 223         }
 224
 225         // set current buffer
 226         buffer_ = b;
 227
 228         // if we're quitting lyx, don't bother updating stuff
 229         if (quitting)
 230                 return;
 231
 232         // if we are closing the buffer, use the first buffer as current
 233         if (!buffer_) {
 234                 buffer_ = bufferlist.first();
 235         }
 236
 237         if (buffer_) {
 238                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 239                 buffer_->addUser(bv_);
 240
 241                 // If we don't have a text object for this, we make one
 242                 if (bv_->text == 0) {
 243                         resizeCurrentBuffer();
 244                 }
 245
 246                 // FIXME: needed when ?
 247                 bv_->text->top_y(screen().topCursorVisible(bv_->text->cursor, bv_->text->top_y()));
 248
 249                 // Buffer-dependent dialogs should be updated or
 250                 // hidden. This should go here because some dialogs (eg ToC)
 251                 // require bv_->text.
 252                 owner_->getDialogs().updateBufferDependent(true);
 253         } else {
 254                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 255                 owner_->getDialogs().hideBufferDependent();
 256
 257                 // Also remove all remaining text's from the testcache.
 258                 // (there should not be any!) (if there is any it is a
 259                 // bug!)
 260                 if (lyxerr.debugging())
 261                         textcache.show(lyxerr, "buffer delete all");
 262                 textcache.clear();
 263         }
 264
 265         repaint();
 266         updateScrollbar();
 267         owner_->updateMenubar();
 268         owner_->updateToolbar();
 269         owner_->updateLayoutChoice();
 270         owner_->updateWindowTitle();
 271
 272         if (buffer_) {
 273                 // Don't forget to update the Layout
 274                 string const layoutname =
 275                         bv_->text->cursor.par()->layout()->name();
 276                 owner_->setLayout(layoutname);
 277         }
 278
 279         if (grfx::Previews::activated() && buffer_)
 280                 grfx::Previews::get().generateBufferPreviews(*buffer_);
 281 }
 282
 283
 284 bool BufferView::Pimpl::fitCursor()
 285 {
 286         bool ret;
 287
 288         if (bv_->theLockingInset()) {
 289                 bv_->theLockingInset()->fitInsetCursor(bv_);
 290                 ret = true;
 291         } else {
 292                 ret = screen().fitCursor(bv_->text, bv_);
 293         }
 294
 295         dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 296
 297         // We need to always update, in case we did a
 298         // paste and we stayed anchored to a row, but
 299         // the actual height of the doc changed ...
 300         updateScrollbar();
 301         return ret;
 302 }
 303
 304
 305 void BufferView::Pimpl::redoCurrentBuffer()
 306 {
 307         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 308         if (buffer_ && bv_->text) {
 309                 resizeCurrentBuffer();
 310                 updateScrollbar();
 311                 owner_->updateLayoutChoice();
 312                 repaint();
 313         }
 314 }
 315
 316
 317 int BufferView::Pimpl::resizeCurrentBuffer()
 318 {
 319         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 320
 321         ParagraphList::iterator par;
 322         ParagraphList::iterator selstartpar;
 323         ParagraphList::iterator selendpar;
 324         UpdatableInset * the_locking_inset = 0;
 325
 326         pos_type pos = 0;
 327         pos_type selstartpos = 0;
 328         pos_type selendpos = 0;
 329         bool selection = false;
 330         bool mark_set  = false;
 331
 332         owner_->busy(true);
 333
 334         owner_->message(_("Formatting document..."));
 335
 336         if (bv_->text) {
 337                 par = bv_->text->cursor.par();
 338                 pos = bv_->text->cursor.pos();
 339                 selstartpar = bv_->text->selection.start.par();
 340                 selstartpos = bv_->text->selection.start.pos();
 341                 selendpar = bv_->text->selection.end.par();
 342                 selendpos = bv_->text->selection.end.pos();
 343                 selection = bv_->text->selection.set();
 344                 mark_set = bv_->text->selection.mark();
 345                 the_locking_inset = bv_->theLockingInset();
 346                 buffer_->resizeInsets(bv_);
 347                 // I don't think the delete and new are necessary here we
 348                 // just could call only init! (Jug 20020419)
 349                 delete bv_->text;
 350                 bv_->text = new LyXText(bv_);
 351                 bv_->text->init(bv_);
 352         } else {
 353                 // See if we have a text in TextCache that fits
 354                 // the new buffer_ with the correct width.
 355                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 356                 if (bv_->text) {
 357                         if (lyxerr.debugging()) {
 358                                 lyxerr << "Found a LyXText that fits:\n";
 359                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 360                         }
 361                         // Set the owner of the newly found text
 362                         //      bv_->text->owner(bv_);
 363                         if (lyxerr.debugging())
 364                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 365
 366                         buffer_->resizeInsets(bv_);
 367                 } else {
 368                         bv_->text = new LyXText(bv_);
 369                         bv_->text->init(bv_);
 370                         //buffer_->resizeInsets(bv_);
 371                 }
 372
 373                 par = bv_->text->ownerParagraphs().end();
 374                 selstartpar = bv_->text->ownerParagraphs().end();
 375                 selendpar = bv_->text->ownerParagraphs().end();
 376         }
 377
 378         if (par != bv_->text->ownerParagraphs().end()) {
 379                 bv_->text->selection.set(true);
 380                 // At this point just to avoid the Delete-Empty-Paragraph-
 381                 // Mechanism when setting the cursor.
 382                 bv_->text->selection.mark(mark_set);
 383                 if (selection) {
 384                         bv_->text->setCursor(selstartpar, selstartpos);
 385                         bv_->text->selection.cursor = bv_->text->cursor;
 386                         bv_->text->setCursor(selendpar, selendpos);
 387                         bv_->text->setSelection();
 388                         bv_->text->setCursor(par, pos);
 389                 } else {
 390                         bv_->text->setCursor(par, pos);
 391                         bv_->text->selection.cursor = bv_->text->cursor;
 392                         bv_->text->selection.set(false);
 393                 }
 394                 // remake the inset locking
 395                 bv_->theLockingInset(the_locking_inset);
 396         }
 397
 398         bv_->text->top_y(screen().topCursorVisible(bv_->text->cursor, bv_->text->top_y()));
 399
 400         switchKeyMap();
 401         owner_->busy(false);
 402
 403         // reset the "Formatting..." message
 404         owner_->clearMessage();
 405
 406         updateScrollbar();
 407
 408         return 0;
 409 }
 410
 411
 412 void BufferView::Pimpl::repaint()
 413 {
 414         // Regenerate the screen.
 415         screen().redraw(bv_->text, bv_);
 416 }
 417
 418
 419 void BufferView::Pimpl::updateScrollbar()
 420 {
 421         if (!bv_->text) {
 422                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 423                 workarea().setScrollbarParams(0, 0, 0);
 424                 return;
 425         }
 426
 427         LyXText const & t = *bv_->text;
 428
 429         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 430                 << t.top_y() << ", default height " << defaultRowHeight() << endl;
 431
 432         workarea().setScrollbarParams(t.height, t.top_y(), defaultRowHeight());
 433 }
 434
 435
 436 void BufferView::Pimpl::scrollDocView(int value)
 437 {
 438         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 439
 440         if (!buffer_)
 441                 return;
 442
 443         screen().hideCursor();
 444
 445         screen().draw(bv_->text, bv_, value);
 446
 447         if (!lyxrc.cursor_follows_scrollbar)
 448                 return;
 449
 450         LyXText * vbt = bv_->text;
 451
 452         int const height = defaultRowHeight();
 453         int const first = static_cast<int>((bv_->text->top_y() + height));
 454         int const last = static_cast<int>((bv_->text->top_y() + workarea().workHeight() - height));
 455
 456         if (vbt->cursor.y() < first)
 457                 vbt->setCursorFromCoordinates(0, first);
 458         else if (vbt->cursor.y() > last)
 459                 vbt->setCursorFromCoordinates(0, last);
 460
 461         owner_->updateLayoutChoice();
 462 }
 463
 464
 465 void BufferView::Pimpl::scroll(int lines)
 466 {
 467         if (!buffer_) {
 468                 return;
 469         }
 470
 471         LyXText const * t = bv_->text;
 472         int const line_height = defaultRowHeight();
 473
 474         // The new absolute coordinate
 475         int new_top_y = t->top_y() + lines * line_height;
 476
 477         // Restrict to a valid value
 478         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 479         new_top_y = std::max(0, new_top_y);
 480
 481         scrollDocView(new_top_y);
 482
 483         // Update the scrollbar.
 484         workarea().setScrollbarParams(t->height, t->top_y(), defaultRowHeight());
 485 }
 486
 487
 488 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 489                                          key_modifier::state state)
 490 {
 491         bv_->owner()->getLyXFunc().processKeySym(key, state);
 492
 493         /* This is perhaps a bit of a hack. When we move
 494          * around, or type, it's nice to be able to see
 495          * the cursor immediately after the keypress. So
 496          * we reset the toggle timeout and force the visibility
 497          * of the cursor. Note we cannot do this inside
 498          * dispatch() itself, because that's called recursively.
 499          */
 500         if (available()) {
 501                 cursor_timeout.restart();
 502                 screen().showCursor(*bv_);
 503         }
 504 }
 505
 506
 507 void BufferView::Pimpl::selectionRequested()
 508 {
 509         static string sel;
 510
 511         if (!available())
 512                 return;
 513
 514         LyXText * text = bv_->getLyXText();
 515
 516         if (text->selection.set() &&
 517                 (!bv_->text->xsel_cache.set() ||
 518                  text->selection.start != bv_->text->xsel_cache.start ||
 519                  text->selection.end != bv_->text->xsel_cache.end))
 520         {
 521                 bv_->text->xsel_cache = text->selection;
 522                 sel = text->selectionAsString(bv_->buffer(), false);
 523         } else if (!text->selection.set()) {
 524                 sel = string();
 525                 bv_->text->xsel_cache.set(false);
 526         }
 527         if (!sel.empty()) {
 528                 workarea().putClipboard(sel);
 529         }
 530 }
 531
 532
 533 void BufferView::Pimpl::selectionLost()
 534 {
 535         if (available()) {
 536                 screen().hideCursor();
 537                 toggleSelection();
 538                 bv_->getLyXText()->clearSelection();
 539                 bv_->text->xsel_cache.set(false);
 540         }
 541 }
 542
 543
 544 void BufferView::Pimpl::workAreaResize()
 545 {
 546         static int work_area_width;
 547         static int work_area_height;
 548
 549         bool const widthChange = workarea().workWidth() != work_area_width;
 550         bool const heightChange = workarea().workHeight() != work_area_height;
 551
 552         // update from work area
 553         work_area_width = workarea().workWidth();
 554         work_area_height = workarea().workHeight();
 555
 556         if (buffer_ != 0) {
 557                 if (widthChange) {
 558                         // The visible LyXView need a resize
 559                         resizeCurrentBuffer();
 560
 561                         // Remove all texts from the textcache
 562                         // This is not _really_ what we want to do. What
 563                         // we really want to do is to delete in textcache
 564                         // that does not have a BufferView with matching
 565                         // width, but as long as we have only one BufferView
 566                         // deleting all gives the same result.
 567                         if (lyxerr.debugging())
 568                                 textcache.show(lyxerr, "Expose delete all");
 569                         textcache.clear();
 570                         // FIXME: this is already done in resizeCurrentBuffer() ??
 571                         buffer_->resizeInsets(bv_);
 572                 } else if (heightChange) {
 573                         // fitCursor() ensures we don't jump back
 574                         // to the start of the document on vertical
 575                         // resize
 576                         fitCursor();
 577                 }
 578         }
 579
 580         if (widthChange || heightChange) {
 581                 repaint();
 582         }
 583
 584         // always make sure that the scrollbar is sane.
 585         updateScrollbar();
 586         owner_->updateLayoutChoice();
 587         return;
 588 }
 589
 590
 591 void BufferView::Pimpl::update()
 592 {
 593         if (!bv_->theLockingInset() || !bv_->theLockingInset()->nodraw()) {
 594                 screen().update(*bv_);
 595                 bv_->text->clearPaint();
 596         }
 597 }
 598
 599
 600 void BufferView::Pimpl::update(LyXText * text, BufferView::UpdateCodes f)
 601 {
 602         if (!text->selection.set() && (f & SELECT)) {
 603                 text->selection.cursor = text->cursor;
 604         }
 605
 606         text->fullRebreak();
 607
 608         if (text->inset_owner) {
 609                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 610                 updateInset(text->inset_owner);
 611         } else {
 612                 update();
 613         }
 614 }
 615
 616
 617 void BufferView::Pimpl::update(BufferView::UpdateCodes f)
 618 {
 619         LyXText * text = bv_->text;
 620
 621         if (!text->selection.set() && (f & SELECT)) {
 622                 text->selection.cursor = text->cursor;
 623         }
 624
 625         text->fullRebreak();
 626
 627         if (text->inset_owner) {
 628                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 629                 updateInset(text->inset_owner);
 630         } else {
 631                 update();
 632         }
 633 }
 634
 635
 636 // Callback for cursor timer
 637 void BufferView::Pimpl::cursorToggle()
 638 {
 639         if (!buffer_) {
 640                 cursor_timeout.restart();
 641                 return;
 642         }
 643
 644         screen().toggleCursor(*bv_);
 645
 646         cursor_timeout.restart();
 647 }
 648
 649
 650 bool BufferView::Pimpl::available() const
 651 {
 652         if (buffer_ && bv_->text)
 653                 return true;
 654         return false;
 655 }
 656
 657
 658 Change const BufferView::Pimpl::getCurrentChange()
 659 {
 660         if (!bv_->buffer()->params.tracking_changes)
 661                 return Change(Change::UNCHANGED);
 662
 663         LyXText * t(bv_->getLyXText());
 664
 665         if (!t->selection.set())
 666                 return Change(Change::UNCHANGED);
 667
 668         LyXCursor const & cur(t->selection.start);
 669         return cur.par()->lookupChangeFull(cur.pos());
 670 }
 671
 672
 673 void BufferView::Pimpl::beforeChange(LyXText * text)
 674 {
 675         toggleSelection();
 676         text->clearSelection();
 677 }
 678
 679
 680 void BufferView::Pimpl::savePosition(unsigned int i)
 681 {
 682         if (i >= saved_positions_num)
 683                 return;
 684         saved_positions[i] = Position(buffer_->fileName(),
 685                                       bv_->text->cursor.par()->id(),
 686                                       bv_->text->cursor.pos());
 687         if (i > 0)
 688                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 689 }
 690
 691
 692 void BufferView::Pimpl::restorePosition(unsigned int i)
 693 {
 694         if (i >= saved_positions_num)
 695                 return;
 696
 697         string const fname = saved_positions[i].filename;
 698
 699         beforeChange(bv_->text);
 700
 701         if (fname != buffer_->fileName()) {
 702                 Buffer * b;
 703                 if (bufferlist.exists(fname))
 704                         b = bufferlist.getBuffer(fname);
 705                 else {
 706                         b = bufferlist.newBuffer(fname);
 707                         ::loadLyXFile(b, fname); // don't ask, just load it
 708                 }
 709                 if (b != 0)
 710                         buffer(b);
 711         }
 712
 713         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 714         if (par == buffer_->par_iterator_end())
 715                 return;
 716
 717         bv_->text->setCursor(par.pit(),
 718                              min(par->size(), saved_positions[i].par_pos));
 719
 720         update(BufferView::SELECT);
 721         if (i > 0)
 722                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 723 }
 724
 725
 726 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 727 {
 728         if (i >= saved_positions_num)
 729                 return false;
 730
 731         return !saved_positions[i].filename.empty();
 732 }
 733
 734
 735 void BufferView::Pimpl::switchKeyMap()
 736 {
 737         if (!lyxrc.rtl_support)
 738                 return;
 739
 740         LyXText * text = bv_->getLyXText();
 741         if (text->real_current_font.isRightToLeft()
 742             && !(bv_->theLockingInset()
 743                  && bv_->theLockingInset()->lyxCode() == Inset::ERT_CODE))
 744         {
 745                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 746                         owner_->getIntl().KeyMapSec();
 747         } else {
 748                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 749                         owner_->getIntl().KeyMapPrim();
 750         }
 751 }
 752
 753
 754 void BufferView::Pimpl::insetUnlock()
 755 {
 756         if (bv_->theLockingInset()) {
 757                 bv_->theLockingInset()->insetUnlock(bv_);
 758                 bv_->theLockingInset(0);
 759                 finishUndo();
 760         }
 761 }
 762
 763
 764 void BufferView::Pimpl::toggleSelection(bool b)
 765 {
 766         if (bv_->theLockingInset())
 767                 bv_->theLockingInset()->toggleSelection(bv_, b);
 768         screen().toggleSelection(bv_->text, bv_, b);
 769 }
 770
 771
 772 void BufferView::Pimpl::toggleToggle()
 773 {
 774         screen().toggleToggle(bv_->text, bv_);
 775 }
 776
 777
 778 void BufferView::Pimpl::center()
 779 {
 780         LyXText * t = bv_->text;
 781
 782         beforeChange(t);
 783         int const half_height = workarea().workHeight() / 2;
 784         int new_y = 0;
 785
 786         if (t->cursor.y() > half_height) {
 787                 new_y = t->cursor.y() - half_height;
 788         }
 789
 790         // FIXME: look at this comment again ...
 791
 792         // FIXME: can we do this w/o calling screen directly ?
 793         // This updates top_y() but means the fitCursor() call
 794         // from the update(FITCUR) doesn't realise that we might
 795         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 796         // the scrollbar to be updated as it should, so we have
 797         // to do it manually. Any operation that does a center()
 798         // and also might have moved top_y() must make sure to call
 799         // updateScrollbar() currently. Never mind that this is a
 800         // pretty obfuscated way of updating t->top_y()
 801         screen().draw(t, bv_, new_y);
 802
 803         update(BufferView::SELECT);
 804 }
 805
 806
 807 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 808 {
 809         workarea().putClipboard(stuff);
 810 }
 811
 812
 813 /*
 814  * Dispatch functions for actions which can be valid for BufferView->text
 815  * and/or InsetText->text!!!
 816  */
 817
 818
 819 Inset * BufferView::Pimpl::getInsetByCode(Inset::Code code)
 820 {
 821 #if 0
 822         LyXCursor cursor = bv_->getLyXText()->cursor;
 823         Buffer::inset_iterator it =
 824                 find_if(Buffer::inset_iterator(
 825                         cursor.par(), cursor.pos()),
 826                         buffer_->inset_iterator_end(),
 827                         lyx::compare_memfun(&Inset::lyxCode, code));
 828         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 829 #else
 830         // Ok, this is a little bit too brute force but it
 831         // should work for now. Better infrastructure is comming. (Lgb)
 832
 833         Buffer * b = bv_->buffer();
 834         LyXCursor cursor = bv_->getLyXText()->cursor;
 835
 836         Buffer::inset_iterator beg = b->inset_iterator_begin();
 837         Buffer::inset_iterator end = b->inset_iterator_end();
 838
 839         bool cursor_par_seen = false;
 840
 841         for (; beg != end; ++beg) {
 842                 if (beg.getPar() == cursor.par()) {
 843                         cursor_par_seen = true;
 844                 }
 845                 if (cursor_par_seen) {
 846                         if (beg.getPar() == cursor.par()
 847                             && beg.getPos() >= cursor.pos()) {
 848                                 break;
 849                         } else if (beg.getPar() != cursor.par()) {
 850                                 break;
 851                         }
 852                 }
 853
 854         }
 855         if (beg != end) {
 856                 // Now find the first inset that matches code.
 857                 for (; beg != end; ++beg) {
 858                         if (beg->lyxCode() == code) {
 859                                 return &(*beg);
 860                         }
 861                 }
 862         }
 863         return 0;
 864 #endif
 865 }
 866
 867
 868 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 869 {
 870         string filename = filen;
 871
 872         if (filename.empty()) {
 873                 // Launch a file browser
 874                 string initpath = lyxrc.document_path;
 875
 876                 if (available()) {
 877                         string const trypath = owner_->buffer()->filePath();
 878                         // If directory is writeable, use this as default.
 879                         if (IsDirWriteable(trypath))
 880                                 initpath = trypath;
 881                 }
 882
 883                 FileDialog fileDlg(_("Select LyX document to insert"),
 884                         LFUN_FILE_INSERT,
 885                         make_pair(string(_("Documents|#o#O")),
 886                                   string(lyxrc.document_path)),
 887                         make_pair(string(_("Examples|#E#e")),
 888                                   string(AddPath(system_lyxdir, "examples"))));
 889
 890                 FileDialog::Result result =
 891                         fileDlg.open(initpath,
 892                                        _("*.lyx| LyX Documents (*.lyx)"));
 893
 894                 if (result.first == FileDialog::Later)
 895                         return;
 896
 897                 filename = result.second;
 898
 899                 // check selected filename
 900                 if (filename.empty()) {
 901                         owner_->message(_("Canceled."));
 902                         return;
 903                 }
 904         }
 905
 906         // get absolute path of file and add ".lyx" to the filename if
 907         // necessary
 908         filename = FileSearch(string(), filename, "lyx");
 909
 910         string const disp_fn = MakeDisplayPath(filename);
 911         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 912         bool const res = bv_->insertLyXFile(filename);
 913         if (res)
 914                 owner_->message(bformat(_("Document %1$s inserted."), disp_fn));
 915         else
 916                 owner_->message(bformat(_("Could not insert document %1$s"), disp_fn));
 917 }
 918
 919
 920 void BufferView::Pimpl::trackChanges()
 921 {
 922         Buffer * buf(bv_->buffer());
 923         bool const tracking(buf->params.tracking_changes);
 924
 925         if (!tracking) {
 926                 ParIterator const end = buf->par_iterator_end();
 927                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 928                         it->trackChanges();
 929                 buf->params.tracking_changes = true;
 930
 931                 // we cannot allow undos beyond the freeze point
 932                 buf->undostack.clear();
 933         } else {
 934                 update(BufferView::SELECT);
 935                 bv_->text->setCursor(buf->paragraphs.begin(), 0);
 936 #warning changes FIXME
 937                 //moveCursorUpdate(false);
 938
 939                 bool found = lyxfind::findNextChange(bv_);
 940                 if (found) {
 941                         owner_->getDialogs().show("changes");
 942                         return;
 943                 }
 944
 945                 ParIterator const end = buf->par_iterator_end();
 946                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 947                         it->untrackChanges();
 948                 buf->params.tracking_changes = false;
 949         }
 950
 951         buf->redostack.clear();
 952 }
 953
 954
 955 // Doesn't go through lyxfunc, so we need to update the
 956 // layout choice etc. ourselves
 957 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev_in)
 958 {
 959         // e.g. Qt mouse press when no buffer
 960         if (!available())
 961                 return false;
 962
 963         screen().hideCursor();
 964
 965         bool const res = dispatch(ev_in);
 966
 967         // see workAreaKeyPress
 968         cursor_timeout.restart();
 969         screen().showCursor(*bv_);
 970
 971         // FIXME: we should skip these when selecting
 972         bv_->owner()->updateLayoutChoice();
 973         bv_->owner()->updateToolbar();
 974         bv_->fitCursor();
 975
 976         // slight hack: this is only called currently when
 977         // we clicked somewhere, so we force through the display
 978         // of the new status here.
 979         bv_->owner()->clearMessage();
 980
 981         return res;
 982 }
 983
 984
 985 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
 986 {
 987         // Make sure that the cached BufferView is correct.
 988         FuncRequest ev = ev_in;
 989         ev.setView(bv_);
 990
 991         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
 992                 << " action[" << ev.action << ']'
 993                 << " arg[" << ev.argument << ']'
 994                 << " x[" << ev.x << ']'
 995                 << " y[" << ev.y << ']'
 996                 << " button[" << ev.button() << ']'
 997                 << endl;
 998
 999         LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
1000
1001         switch (ev.action) {
1002
1003         case LFUN_SCROLL_INSET:
1004                 // this is not handled here as this function is only active
1005                 // if we have a locking_inset and that one is (or contains)
1006                 // a tabular-inset
1007                 break;
1008
1009         case LFUN_FILE_INSERT:
1010                 MenuInsertLyXFile(ev.argument);
1011                 break;
1012
1013         case LFUN_FILE_INSERT_ASCII_PARA:
1014                 InsertAsciiFile(bv_, ev.argument, true);
1015                 break;
1016
1017         case LFUN_FILE_INSERT_ASCII:
1018                 InsertAsciiFile(bv_, ev.argument, false);
1019                 break;
1020
1021         case LFUN_LANGUAGE:
1022                 lang(bv_, ev.argument);
1023                 switchKeyMap();
1024                 owner_->view_state_changed();
1025                 break;
1026
1027         case LFUN_EMPH:
1028                 emph(bv_);
1029                 owner_->view_state_changed();
1030                 break;
1031
1032         case LFUN_BOLD:
1033                 bold(bv_);
1034                 owner_->view_state_changed();
1035                 break;
1036
1037         case LFUN_NOUN:
1038                 noun(bv_);
1039                 owner_->view_state_changed();
1040                 break;
1041
1042         case LFUN_CODE:
1043                 code(bv_);
1044                 owner_->view_state_changed();
1045                 break;
1046
1047         case LFUN_SANS:
1048                 sans(bv_);
1049                 owner_->view_state_changed();
1050                 break;
1051
1052         case LFUN_ROMAN:
1053                 roman(bv_);
1054                 owner_->view_state_changed();
1055                 break;
1056
1057         case LFUN_DEFAULT:
1058                 styleReset(bv_);
1059                 owner_->view_state_changed();
1060                 break;
1061
1062         case LFUN_UNDERLINE:
1063                 underline(bv_);
1064                 owner_->view_state_changed();
1065                 break;
1066
1067         case LFUN_FONT_SIZE:
1068                 fontSize(bv_, ev.argument);
1069                 owner_->view_state_changed();
1070                 break;
1071
1072         case LFUN_FONT_STATE:
1073                 owner_->getLyXFunc().setMessage(currentState(bv_));
1074                 break;
1075
1076         case LFUN_INSERT_LABEL: {
1077                 // Try and generate a valid label
1078                 string const contents = ev.argument.empty() ?
1079                         getPossibleLabel(*bv_) : ev.argument;
1080                 InsetCommandParams icp("label", contents);
1081                 string data = InsetCommandMailer::params2string("label", icp);
1082                 owner_->getDialogs().show("label", data, 0);
1083         }
1084         break;
1085
1086         case LFUN_BOOKMARK_SAVE:
1087                 savePosition(strToUnsignedInt(ev.argument));
1088                 break;
1089
1090         case LFUN_BOOKMARK_GOTO:
1091                 restorePosition(strToUnsignedInt(ev.argument));
1092                 break;
1093
1094         case LFUN_REF_GOTO: {
1095                 string label = ev.argument;
1096                 if (label.empty()) {
1097                         InsetRef * inset =
1098                                 static_cast<InsetRef*>(getInsetByCode(Inset::REF_CODE));
1099                         if (inset) {
1100                                 label = inset->getContents();
1101                                 savePosition(0);
1102                         }
1103                 }
1104
1105                 if (!label.empty())
1106                         bv_->gotoLabel(label);
1107         }
1108         break;
1109
1110         // --- accented characters ---------------------------
1111
1112         case LFUN_UMLAUT:
1113         case LFUN_CIRCUMFLEX:
1114         case LFUN_GRAVE:
1115         case LFUN_ACUTE:
1116         case LFUN_TILDE:
1117         case LFUN_CEDILLA:
1118         case LFUN_MACRON:
1119         case LFUN_DOT:
1120         case LFUN_UNDERDOT:
1121         case LFUN_UNDERBAR:
1122         case LFUN_CARON:
1123         case LFUN_SPECIAL_CARON:
1124         case LFUN_BREVE:
1125         case LFUN_TIE:
1126         case LFUN_HUNG_UMLAUT:
1127         case LFUN_CIRCLE:
1128         case LFUN_OGONEK:
1129                 if (ev.argument.empty()) {
1130                         // As always...
1131                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1132                 } else {
1133                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1134                         owner_->getIntl().getTransManager()
1135                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1136                         update(bv_->getLyXText(), BufferView::SELECT);
1137                 }
1138                 break;
1139
1140         case LFUN_MATH_MACRO:
1141         case LFUN_MATH_DELIM:
1142         case LFUN_INSERT_MATRIX:
1143         case LFUN_INSERT_MATH:
1144         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1145         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1146         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1147                 mathDispatch(ev);
1148                 break;
1149
1150         case LFUN_INSET_APPLY: {
1151                 string const name = ev.getArg(0);
1152
1153                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1154                 if (inset) {
1155                         // This works both for 'original' and 'mathed' insets.
1156                         // Note that the localDispatch performs updateInset
1157                         // also.
1158                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1159                         inset->localDispatch(fr);
1160                 } else {
1161                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1162                         dispatch(fr);
1163                 }
1164         }
1165         break;
1166
1167         case LFUN_INSET_INSERT: {
1168                 Inset * inset = createInset(ev);
1169                 if (inset && insertInset(inset)) {
1170                         updateInset(inset);
1171
1172                         string const name = ev.getArg(0);
1173                         if (name == "bibitem") {
1174                                 // We need to do a redraw because the maximum
1175                                 // InsetBibitem width could have changed
1176 #warning please check you mean repaint() not update(),
1177 #warning and whether the repaint() is needed at all
1178                                 bv_->repaint();
1179                                 bv_->fitCursor();
1180                         }
1181                 } else {
1182                         delete inset;
1183                 }
1184         }
1185         break;
1186
1187         case LFUN_FLOAT_LIST:
1188                 if (tclass.floats().typeExist(ev.argument)) {
1189                         Inset * inset = new InsetFloatList(ev.argument);
1190                         if (!insertInset(inset, tclass.defaultLayoutName()))
1191                                 delete inset;
1192                 } else {
1193                         lyxerr << "Non-existent float type: "
1194                                << ev.argument << endl;
1195                 }
1196                 break;
1197
1198         case LFUN_LAYOUT_PARAGRAPH: {
1199                 Paragraph const * par = &*bv_->getLyXText()->cursor.par();
1200                 if (!par)
1201                         break;
1202
1203                 string data;
1204                 params2string(*par, data);
1205
1206                 data = "show\n" + data;
1207                 bv_->owner()->getDialogs().show("paragraph", data);
1208                 break;
1209         }
1210
1211         case LFUN_PARAGRAPH_UPDATE: {
1212                 if (!bv_->owner()->getDialogs().visible("paragraph"))
1213                         break;
1214                 Paragraph const * par = &*bv_->getLyXText()->cursor.par();
1215                 if (!par)
1216                         break;
1217
1218                 string data;
1219                 params2string(*par, data);
1220
1221                 // Will the paragraph accept changes from the dialog?
1222                 Inset * const inset = par->inInset();
1223                 bool const accept =
1224                         !(inset && inset->forceDefaultParagraphs(inset));
1225
1226                 data = "update " + tostr(accept) + '\n' + data;
1227                 bv_->owner()->getDialogs().update("paragraph", data);
1228                 break;
1229         }
1230
1231         case LFUN_PARAGRAPH_APPLY:
1232                 setParagraphParams(*bv_, ev.argument);
1233                 break;
1234
1235         case LFUN_THESAURUS_ENTRY:
1236         {
1237                 string arg = ev.argument;
1238
1239                 if (arg.empty()) {
1240                         arg = bv_->getLyXText()->selectionAsString(buffer_,
1241                                                                    false);
1242
1243                         // FIXME
1244                         if (arg.size() > 100 || arg.empty()) {
1245                                 // Get word or selection
1246                                 bv_->getLyXText()->selectWordWhenUnderCursor(LyXText::WHOLE_WORD);
1247                                 arg = bv_->getLyXText()->selectionAsString(buffer_, false);
1248                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1249                         }
1250                 }
1251
1252                 bv_->owner()->getDialogs().show("thesaurus", arg);
1253         }
1254                 break;
1255
1256         case LFUN_TRACK_CHANGES:
1257                 trackChanges();
1258                 break;
1259
1260         case LFUN_MERGE_CHANGES:
1261                 owner_->getDialogs().show("changes");
1262                 break;
1263
1264         case LFUN_ACCEPT_ALL_CHANGES: {
1265                 update(BufferView::SELECT);
1266                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1267 #warning FIXME changes
1268                 //moveCursorUpdate(false);
1269
1270                 while (lyxfind::findNextChange(bv_)) {
1271                         bv_->getLyXText()->acceptChange();
1272                 }
1273                 update(BufferView::SELECT);
1274                 break;
1275         }
1276
1277         case LFUN_REJECT_ALL_CHANGES: {
1278                 update(BufferView::SELECT);
1279                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1280 #warning FIXME changes
1281                 //moveCursorUpdate(false);
1282
1283                 while (lyxfind::findNextChange(bv_)) {
1284                         bv_->getLyXText()->rejectChange();
1285                 }
1286                 update(BufferView::SELECT);
1287                 break;
1288         }
1289
1290         case LFUN_ACCEPT_CHANGE: {
1291                 bv_->getLyXText()->acceptChange();
1292                 update(BufferView::SELECT);
1293                 break;
1294         }
1295
1296         case LFUN_REJECT_CHANGE: {
1297                 bv_->getLyXText()->rejectChange();
1298                 update(BufferView::SELECT);
1299                 break;
1300         }
1301
1302         case LFUN_UNKNOWN_ACTION:
1303                 ev.errorMessage(N_("Unknown function!"));
1304                 break;
1305
1306         default:
1307                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1308         } // end of switch
1309
1310         return true;
1311 }
1312
1313
1314 bool BufferView::Pimpl::insertInset(Inset * inset, string const & lout)
1315 {
1316         // if we are in a locking inset we should try to insert the
1317         // inset there otherwise this is a illegal function now
1318         if (bv_->theLockingInset()) {
1319                 if (bv_->theLockingInset()->insetAllowed(inset))
1320                         return bv_->theLockingInset()->insertInset(bv_, inset);
1321                 return false;
1322         }
1323
1324         // not quite sure if we want this...
1325         setCursorParUndo(bv_);
1326         freezeUndo();
1327
1328         beforeChange(bv_->text);
1329         if (!lout.empty()) {
1330                 update(BufferView::SELECT);
1331                 bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1332                 update(BufferView::SELECT);
1333
1334                 if (!bv_->text->cursor.par()->empty()) {
1335                         bv_->text->cursorLeft(bv_);
1336
1337                         bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1338                         update(BufferView::SELECT);
1339                 }
1340
1341                 string lres = lout;
1342                 LyXTextClass const & tclass =
1343                         buffer_->params.getLyXTextClass();
1344                 bool hasLayout = tclass.hasLayout(lres);
1345                 string lay = tclass.defaultLayoutName();
1346
1347                 if (hasLayout != false) {
1348                         // layout found
1349                         lay = lres;
1350                 } else {
1351                         // layout not fount using default
1352                         lay = tclass.defaultLayoutName();
1353                 }
1354
1355                 bv_->text->setLayout(lay);
1356
1357                 bv_->text->setParagraph(0, 0,
1358                                    0, 0,
1359                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1360                                    Spacing(),
1361                                    LYX_ALIGN_LAYOUT,
1362                                    string(),
1363                                    0);
1364                 update(BufferView::SELECT);
1365         }
1366
1367         bv_->text->insertInset(inset);
1368         update(BufferView::SELECT);
1369
1370         unFreezeUndo();
1371         return true;
1372 }
1373
1374
1375 void BufferView::Pimpl::updateInset(Inset * inset)
1376 {
1377         if (!inset || !available())
1378                 return;
1379
1380         // first check for locking insets
1381         if (bv_->theLockingInset()) {
1382                 if (bv_->theLockingInset() == inset) {
1383                         if (bv_->text->updateInset(inset)) {
1384                                 update();
1385                                 updateScrollbar();
1386                                 return;
1387                         }
1388                 } else if (bv_->theLockingInset()->updateInsetInInset(bv_, inset)) {
1389                         if (bv_->text->updateInset(bv_->theLockingInset())) {
1390                                 update();
1391                                 updateScrollbar();
1392                                 return;
1393                         }
1394                 }
1395         }
1396
1397         // then check if the inset is a top_level inset (has no owner)
1398         // if yes do the update as always otherwise we have to update the
1399         // toplevel inset where this inset is inside
1400         Inset * tl_inset = inset;
1401         while (tl_inset->owner())
1402                 tl_inset = tl_inset->owner();
1403         if (tl_inset == inset) {
1404                 update(BufferView::UPDATE);
1405                 if (bv_->text->updateInset(inset)) {
1406                         update(BufferView::SELECT);
1407                         return;
1408                 }
1409         } else if (static_cast<UpdatableInset *>(tl_inset)
1410                            ->updateInsetInInset(bv_, inset))
1411         {
1412                 if (bv_->text->updateInset(tl_inset)) {
1413                         update();
1414                         updateScrollbar();
1415                 }
1416         }
1417 }