src/BufferView_pimpl.C

   1 /**
   2  * \file BufferView_pimpl.C
   3  * Copyright 2002 the LyX Team
   4  * Read the file COPYING
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author various
   8  */
   9
  10 #include <config.h>
  11
  12 #include "BufferView_pimpl.h"
  13 #include "bufferlist.h"
  14 #include "buffer.h"
  15 #include "buffer_funcs.h"
  16 #include "bufferview_funcs.h"
  17 #include "lfuns.h"
  18 #include "debug.h"
  19 #include "factory.h"
  20 #include "FloatList.h"
  21 #include "funcrequest.h"
  22 #include "gettext.h"
  23 #include "intl.h"
  24 #include "iterators.h"
  25 #include "Lsstream.h"
  26 #include "lyx_cb.h" // added for Dispatch functions
  27 #include "lyx_main.h"
  28 #include "lyxfind.h"
  29 #include "lyxfunc.h"
  30 #include "lyxtext.h"
  31 #include "lyxrc.h"
  32 #include "lyxrow.h"
  33 #include "lastfiles.h"
  34 #include "paragraph.h"
  35 #include "ParagraphParameters.h"
  36 #include "TextCache.h"
  37 #include "undo_funcs.h"
  38
  39 #include "insets/insetfloatlist.h"
  40 #include "insets/insetgraphics.h"
  41 #include "insets/insetinclude.h"
  42 #include "insets/insetref.h"
  43 #include "insets/insettext.h"
  44
  45 #include "frontends/Alert.h"
  46 #include "frontends/Dialogs.h"
  47 #include "frontends/FileDialog.h"
  48 #include "frontends/LyXView.h"
  49 #include "frontends/LyXScreenFactory.h"
  50 #include "frontends/mouse_state.h"
  51 #include "frontends/screen.h"
  52 #include "frontends/WorkArea.h"
  53 #include "frontends/WorkAreaFactory.h"
  54
  55 #include "mathed/formulabase.h"
  56
  57 #include "graphics/Previews.h"
  58
  59 #include "support/LAssert.h"
  60 #include "support/tostr.h"
  61 #include "support/filetools.h"
  62
  63 #include <boost/bind.hpp>
  64 #include <boost/signals/connection.hpp>
  65
  66 #include <unistd.h>
  67 #include <sys/wait.h>
  68
  69
  70 using std::vector;
  71 using std::find_if;
  72 using std::find;
  73 using std::pair;
  74 using std::endl;
  75 using std::make_pair;
  76 using std::min;
  77
  78 using lyx::pos_type;
  79 using namespace lyx::support;
  80 using namespace bv_funcs;
  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::workAreaDispatch, 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 void BufferView::Pimpl::addError(ErrorItem const & ei)
 136 {
 137         errorlist_.push_back(ei);
 138 }
 139
 140
 141 void BufferView::Pimpl::connectBuffer(Buffer & buf)
 142 {
 143         if (errorConnection_.connected())
 144                 disconnectBuffer();
 145
 146         errorConnection_ = buf.error.connect(boost::bind(&BufferView::Pimpl::addError, this, _1));
 147         messageConnection_ = buf.message.connect(boost::bind(&LyXView::message, owner_, _1));
 148         busyConnection_ = buf.busy.connect(boost::bind(&LyXView::busy, owner_, _1));
 149 }
 150
 151
 152 void BufferView::Pimpl::disconnectBuffer()
 153 {
 154         errorConnection_.disconnect();
 155         messageConnection_.disconnect();
 156         busyConnection_.disconnect();
 157 }
 158
 159
 160 bool BufferView::Pimpl::newFile(string const & filename,
 161                                 string const & tname,
 162                                 bool isNamed)
 163 {
 164         Buffer * b = ::newFile(filename, tname, isNamed);
 165         buffer(b);
 166         return true;
 167 }
 168
 169
 170 bool BufferView::Pimpl::loadLyXFile(string const & filename, bool tolastfiles)
 171 {
 172         // get absolute path of file and add ".lyx" to the filename if
 173         // necessary
 174         string s = FileSearch(string(), filename, "lyx");
 175         if (s.empty()) {
 176                 s = filename;
 177         }
 178
 179         // file already open?
 180         if (bufferlist.exists(s)) {
 181                 string const file = MakeDisplayPath(s, 20);
 182                 string text = bformat(_("The document %1$s is already "
 183                                         "loaded.\n\nDo you want to revert "
 184                                         "to the saved version?"), file);
 185                 int const ret = Alert::prompt(_("Revert to saved document?"),
 186                         text, 0, 1,  _("&Revert"), _("&Switch to document"));
 187
 188                 if (ret != 0) {
 189                         buffer(bufferlist.getBuffer(s));
 190                         return true;
 191                 } else {
 192                         // FIXME: should be LFUN_REVERT
 193                         if (!bufferlist.close(bufferlist.getBuffer(s), false))
 194                                 return false;
 195                         // Fall through to new load. (Asger)
 196                 }
 197         }
 198         Buffer * b = bufferlist.newBuffer(s);
 199
 200         connectBuffer(*b);
 201
 202         if (! ::loadLyXFile(b, s)) {
 203                 bufferlist.release(b);
 204                 string text = bformat(_("The document %1$s does not yet "
 205                                         "exist.\n\nDo you want to create "
 206                                         "a new document?"), s);
 207                 int const ret = Alert::prompt(_("Create new document?"),
 208                          text, 0, 1, _("&Create"), _("Cancel"));
 209
 210                 if (ret != 0)
 211                         return false;
 212         }
 213
 214         buffer(b);
 215
 216         if (tolastfiles)
 217                 lastfiles->newFile(b->fileName());
 218
 219         bv_->showErrorList(_("Parse"));
 220
 221         return true;
 222 }
 223
 224
 225 WorkArea & BufferView::Pimpl::workarea() const
 226 {
 227         return *workarea_.get();
 228 }
 229
 230
 231 LyXScreen & BufferView::Pimpl::screen() const
 232 {
 233         return *screen_.get();
 234 }
 235
 236
 237 Painter & BufferView::Pimpl::painter() const
 238 {
 239         return workarea().getPainter();
 240 }
 241
 242
 243 void BufferView::Pimpl::buffer(Buffer * b)
 244 {
 245         lyxerr[Debug::INFO] << "Setting buffer in BufferView ("
 246                             << b << ')' << endl;
 247         if (buffer_) {
 248                 disconnectBuffer();
 249                 buffer_->delUser(bv_);
 250
 251                 // Put the old text into the TextCache, but
 252                 // only if the buffer is still loaded.
 253                 // Also set the owner of the test to 0
 254                 //              bv_->text->owner(0);
 255                 textcache.add(buffer_, workarea().workWidth(), bv_->text);
 256                 if (lyxerr.debugging())
 257                         textcache.show(lyxerr, "BufferView::buffer");
 258
 259                 bv_->text = 0;
 260         }
 261
 262         // set current buffer
 263         buffer_ = b;
 264
 265         // if we're quitting lyx, don't bother updating stuff
 266         if (quitting)
 267                 return;
 268
 269         // if we are closing the buffer, use the first buffer as current
 270         if (!buffer_) {
 271                 buffer_ = bufferlist.first();
 272         }
 273
 274         if (buffer_) {
 275                 lyxerr[Debug::INFO] << "Buffer addr: " << buffer_ << endl;
 276                 buffer_->addUser(bv_);
 277                 connectBuffer(*buffer_);
 278
 279                 // If we don't have a text object for this, we make one
 280                 if (bv_->text == 0) {
 281                         resizeCurrentBuffer();
 282                 }
 283
 284                 // FIXME: needed when ?
 285                 bv_->text->top_y(screen().topCursorVisible(bv_->text));
 286
 287                 // Buffer-dependent dialogs should be updated or
 288                 // hidden. This should go here because some dialogs (eg ToC)
 289                 // require bv_->text.
 290                 owner_->getDialogs().updateBufferDependent(true);
 291         } else {
 292                 lyxerr[Debug::INFO] << "  No Buffer!" << endl;
 293                 owner_->getDialogs().hideBufferDependent();
 294
 295                 // Also remove all remaining text's from the testcache.
 296                 // (there should not be any!) (if there is any it is a
 297                 // bug!)
 298                 if (lyxerr.debugging())
 299                         textcache.show(lyxerr, "buffer delete all");
 300                 textcache.clear();
 301         }
 302
 303         repaint();
 304         updateScrollbar();
 305         owner_->updateMenubar();
 306         owner_->updateToolbar();
 307         owner_->updateLayoutChoice();
 308         owner_->updateWindowTitle();
 309
 310         if (buffer_) {
 311                 // Don't forget to update the Layout
 312                 string const layoutname =
 313                         bv_->text->cursor.par()->layout()->name();
 314                 owner_->setLayout(layoutname);
 315         }
 316
 317         if (grfx::Previews::activated() && buffer_)
 318                 grfx::Previews::get().generateBufferPreviews(*buffer_);
 319 }
 320
 321
 322 bool BufferView::Pimpl::fitCursor()
 323 {
 324         bool ret;
 325
 326         if (bv_->theLockingInset()) {
 327                 bv_->theLockingInset()->fitInsetCursor(bv_);
 328                 ret = true;
 329         } else {
 330                 ret = screen().fitCursor(bv_->text, bv_);
 331         }
 332
 333         dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 334
 335         // We need to always update, in case we did a
 336         // paste and we stayed anchored to a row, but
 337         // the actual height of the doc changed ...
 338         updateScrollbar();
 339         return ret;
 340 }
 341
 342
 343 void BufferView::Pimpl::redoCurrentBuffer()
 344 {
 345         lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
 346         if (buffer_ && bv_->text) {
 347                 resizeCurrentBuffer();
 348                 updateScrollbar();
 349                 owner_->updateLayoutChoice();
 350                 repaint();
 351         }
 352 }
 353
 354
 355 int BufferView::Pimpl::resizeCurrentBuffer()
 356 {
 357         lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
 358
 359         ParagraphList::iterator par;
 360         ParagraphList::iterator selstartpar;
 361         ParagraphList::iterator selendpar;
 362         UpdatableInset * the_locking_inset = 0;
 363
 364         pos_type pos = 0;
 365         pos_type selstartpos = 0;
 366         pos_type selendpos = 0;
 367         bool selection = false;
 368         bool mark_set  = false;
 369
 370         owner_->busy(true);
 371
 372         owner_->message(_("Formatting document..."));
 373
 374         if (bv_->text) {
 375                 par = bv_->text->cursor.par();
 376                 pos = bv_->text->cursor.pos();
 377                 selstartpar = bv_->text->selection.start.par();
 378                 selstartpos = bv_->text->selection.start.pos();
 379                 selendpar = bv_->text->selection.end.par();
 380                 selendpos = bv_->text->selection.end.pos();
 381                 selection = bv_->text->selection.set();
 382                 mark_set = bv_->text->selection.mark();
 383                 the_locking_inset = bv_->theLockingInset();
 384                 buffer_->resizeInsets(bv_);
 385                 // I don't think the delete and new are necessary here we
 386                 // just could call only init! (Jug 20020419)
 387                 delete bv_->text;
 388                 bv_->text = new LyXText(bv_);
 389                 bv_->text->init(bv_);
 390         } else {
 391                 // See if we have a text in TextCache that fits
 392                 // the new buffer_ with the correct width.
 393                 bv_->text = textcache.findFit(buffer_, workarea().workWidth());
 394                 if (bv_->text) {
 395                         if (lyxerr.debugging()) {
 396                                 lyxerr << "Found a LyXText that fits:\n";
 397                                 textcache.show(lyxerr, make_pair(buffer_, make_pair(workarea().workWidth(), bv_->text)));
 398                         }
 399                         // Set the owner of the newly found text
 400                         //      bv_->text->owner(bv_);
 401                         if (lyxerr.debugging())
 402                                 textcache.show(lyxerr, "resizeCurrentBuffer");
 403
 404                         buffer_->resizeInsets(bv_);
 405                 } else {
 406                         bv_->text = new LyXText(bv_);
 407                         bv_->text->init(bv_);
 408                         //buffer_->resizeInsets(bv_);
 409                 }
 410
 411                 par = bv_->text->ownerParagraphs().end();
 412                 selstartpar = bv_->text->ownerParagraphs().end();
 413                 selendpar = bv_->text->ownerParagraphs().end();
 414         }
 415
 416         if (par != bv_->text->ownerParagraphs().end()) {
 417                 bv_->text->selection.set(true);
 418                 // At this point just to avoid the Delete-Empty-Paragraph-
 419                 // Mechanism when setting the cursor.
 420                 bv_->text->selection.mark(mark_set);
 421                 if (selection) {
 422                         bv_->text->setCursor(selstartpar, selstartpos);
 423                         bv_->text->selection.cursor = bv_->text->cursor;
 424                         bv_->text->setCursor(selendpar, selendpos);
 425                         bv_->text->setSelection();
 426                         bv_->text->setCursor(par, pos);
 427                 } else {
 428                         bv_->text->setCursor(par, pos);
 429                         bv_->text->selection.cursor = bv_->text->cursor;
 430                         bv_->text->selection.set(false);
 431                 }
 432                 // remake the inset locking
 433                 bv_->theLockingInset(the_locking_inset);
 434         }
 435
 436         bv_->text->top_y(screen().topCursorVisible(bv_->text));
 437
 438         switchKeyMap();
 439         owner_->busy(false);
 440
 441         // reset the "Formatting..." message
 442         owner_->clearMessage();
 443
 444         updateScrollbar();
 445
 446         return 0;
 447 }
 448
 449
 450 void BufferView::Pimpl::repaint()
 451 {
 452         // Regenerate the screen.
 453         screen().redraw(bv_->text, bv_);
 454 }
 455
 456
 457 void BufferView::Pimpl::updateScrollbar()
 458 {
 459         if (!bv_->text) {
 460                 lyxerr[Debug::GUI] << "no text in updateScrollbar" << endl;
 461                 workarea().setScrollbarParams(0, 0, 0);
 462                 return;
 463         }
 464
 465         LyXText const & t = *bv_->text;
 466
 467         lyxerr[Debug::GUI] << "Updating scrollbar: h " << t.height << ", top_y() "
 468                 << t.top_y() << ", default height " << defaultRowHeight() << endl;
 469
 470         workarea().setScrollbarParams(t.height, t.top_y(), defaultRowHeight());
 471 }
 472
 473
 474 void BufferView::Pimpl::scrollDocView(int value)
 475 {
 476         lyxerr[Debug::GUI] << "scrollDocView of " << value << endl;
 477
 478         if (!buffer_)
 479                 return;
 480
 481         screen().hideCursor();
 482
 483         screen().draw(bv_->text, bv_, value);
 484
 485         if (!lyxrc.cursor_follows_scrollbar)
 486                 return;
 487
 488         LyXText * vbt = bv_->text;
 489
 490         int const height = defaultRowHeight();
 491         int const first = static_cast<int>((bv_->text->top_y() + height));
 492         int const last = static_cast<int>((bv_->text->top_y() + workarea().workHeight() - height));
 493
 494         if (vbt->cursor.y() < first)
 495                 vbt->setCursorFromCoordinates(0, first);
 496         else if (vbt->cursor.y() > last)
 497                 vbt->setCursorFromCoordinates(0, last);
 498
 499         owner_->updateLayoutChoice();
 500 }
 501
 502
 503 void BufferView::Pimpl::scroll(int lines)
 504 {
 505         if (!buffer_) {
 506                 return;
 507         }
 508
 509         LyXText const * t = bv_->text;
 510         int const line_height = defaultRowHeight();
 511
 512         // The new absolute coordinate
 513         int new_top_y = t->top_y() + lines * line_height;
 514
 515         // Restrict to a valid value
 516         new_top_y = std::min(t->height - 4 * line_height, new_top_y);
 517         new_top_y = std::max(0, new_top_y);
 518
 519         scrollDocView(new_top_y);
 520
 521         // Update the scrollbar.
 522         workarea().setScrollbarParams(t->height, t->top_y(), defaultRowHeight());
 523 }
 524
 525
 526 void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 527                                          key_modifier::state state)
 528 {
 529         bv_->owner()->getLyXFunc().processKeySym(key, state);
 530
 531         /* This is perhaps a bit of a hack. When we move
 532          * around, or type, it's nice to be able to see
 533          * the cursor immediately after the keypress. So
 534          * we reset the toggle timeout and force the visibility
 535          * of the cursor. Note we cannot do this inside
 536          * dispatch() itself, because that's called recursively.
 537          */
 538         if (available()) {
 539                 cursor_timeout.restart();
 540                 screen().showCursor(*bv_);
 541         }
 542 }
 543
 544
 545 void BufferView::Pimpl::selectionRequested()
 546 {
 547         static string sel;
 548
 549         if (!available())
 550                 return;
 551
 552         LyXText * text = bv_->getLyXText();
 553
 554         if (text->selection.set() &&
 555                 (!bv_->text->xsel_cache.set() ||
 556                  text->selection.start != bv_->text->xsel_cache.start ||
 557                  text->selection.end != bv_->text->xsel_cache.end))
 558         {
 559                 bv_->text->xsel_cache = text->selection;
 560                 sel = text->selectionAsString(bv_->buffer(), false);
 561         } else if (!text->selection.set()) {
 562                 sel = string();
 563                 bv_->text->xsel_cache.set(false);
 564         }
 565         if (!sel.empty()) {
 566                 workarea().putClipboard(sel);
 567         }
 568 }
 569
 570
 571 void BufferView::Pimpl::selectionLost()
 572 {
 573         if (available()) {
 574                 screen().hideCursor();
 575                 toggleSelection();
 576                 bv_->getLyXText()->clearSelection();
 577                 bv_->text->xsel_cache.set(false);
 578         }
 579 }
 580
 581
 582 void BufferView::Pimpl::workAreaResize()
 583 {
 584         static int work_area_width;
 585         static int work_area_height;
 586
 587         bool const widthChange = workarea().workWidth() != work_area_width;
 588         bool const heightChange = workarea().workHeight() != work_area_height;
 589
 590         // update from work area
 591         work_area_width = workarea().workWidth();
 592         work_area_height = workarea().workHeight();
 593
 594         if (buffer_ != 0) {
 595                 if (widthChange) {
 596                         // The visible LyXView need a resize
 597                         resizeCurrentBuffer();
 598
 599                         // Remove all texts from the textcache
 600                         // This is not _really_ what we want to do. What
 601                         // we really want to do is to delete in textcache
 602                         // that does not have a BufferView with matching
 603                         // width, but as long as we have only one BufferView
 604                         // deleting all gives the same result.
 605                         if (lyxerr.debugging())
 606                                 textcache.show(lyxerr, "Expose delete all");
 607                         textcache.clear();
 608                         // FIXME: this is already done in resizeCurrentBuffer() ??
 609                         buffer_->resizeInsets(bv_);
 610                 } else if (heightChange) {
 611                         // fitCursor() ensures we don't jump back
 612                         // to the start of the document on vertical
 613                         // resize
 614                         fitCursor();
 615                 }
 616         }
 617
 618         if (widthChange || heightChange) {
 619                 repaint();
 620         }
 621
 622         // always make sure that the scrollbar is sane.
 623         updateScrollbar();
 624         owner_->updateLayoutChoice();
 625         return;
 626 }
 627
 628
 629 void BufferView::Pimpl::update()
 630 {
 631         if (!bv_->theLockingInset() || !bv_->theLockingInset()->nodraw()) {
 632                 screen().update(*bv_);
 633                 bv_->text->clearPaint();
 634         }
 635 }
 636
 637
 638 void BufferView::Pimpl::update(LyXText * text, BufferView::UpdateCodes f)
 639 {
 640         if (!text->selection.set() && (f & SELECT)) {
 641                 text->selection.cursor = text->cursor;
 642         }
 643
 644         text->partialRebreak();
 645
 646         if (text->inset_owner) {
 647                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 648                 updateInset(text->inset_owner);
 649         } else {
 650                 update();
 651         }
 652 }
 653
 654
 655 void BufferView::Pimpl::update(BufferView::UpdateCodes f)
 656 {
 657         LyXText * text = bv_->text;
 658
 659         if (!text->selection.set() && (f & SELECT)) {
 660                 text->selection.cursor = text->cursor;
 661         }
 662
 663         text->partialRebreak();
 664
 665         if (text->inset_owner) {
 666                 text->inset_owner->setUpdateStatus(bv_, InsetText::NONE);
 667                 updateInset(text->inset_owner);
 668         } else {
 669                 update();
 670         }
 671 }
 672
 673
 674 // Callback for cursor timer
 675 void BufferView::Pimpl::cursorToggle()
 676 {
 677         if (!buffer_) {
 678                 cursor_timeout.restart();
 679                 return;
 680         }
 681
 682         screen().toggleCursor(*bv_);
 683
 684         cursor_timeout.restart();
 685 }
 686
 687
 688 bool BufferView::Pimpl::available() const
 689 {
 690         if (buffer_ && bv_->text)
 691                 return true;
 692         return false;
 693 }
 694
 695
 696 Change const BufferView::Pimpl::getCurrentChange()
 697 {
 698         if (!bv_->buffer()->params.tracking_changes)
 699                 return Change(Change::UNCHANGED);
 700
 701         LyXText * t(bv_->getLyXText());
 702
 703         if (!t->selection.set())
 704                 return Change(Change::UNCHANGED);
 705
 706         LyXCursor const & cur(t->selection.start);
 707         return cur.par()->lookupChangeFull(cur.pos());
 708 }
 709
 710
 711 void BufferView::Pimpl::beforeChange(LyXText * text)
 712 {
 713         toggleSelection();
 714         text->clearSelection();
 715 }
 716
 717
 718 void BufferView::Pimpl::savePosition(unsigned int i)
 719 {
 720         if (i >= saved_positions_num)
 721                 return;
 722         saved_positions[i] = Position(buffer_->fileName(),
 723                                       bv_->text->cursor.par()->id(),
 724                                       bv_->text->cursor.pos());
 725         if (i > 0)
 726                 owner_->message(bformat(_("Saved bookmark %1$s"), tostr(i)));
 727 }
 728
 729
 730 void BufferView::Pimpl::restorePosition(unsigned int i)
 731 {
 732         if (i >= saved_positions_num)
 733                 return;
 734
 735         string const fname = saved_positions[i].filename;
 736
 737         beforeChange(bv_->text);
 738
 739         if (fname != buffer_->fileName()) {
 740                 Buffer * b;
 741                 if (bufferlist.exists(fname))
 742                         b = bufferlist.getBuffer(fname);
 743                 else {
 744                         b = bufferlist.newBuffer(fname);
 745                         ::loadLyXFile(b, fname); // don't ask, just load it
 746                 }
 747                 if (b != 0)
 748                         buffer(b);
 749         }
 750
 751         ParIterator par = buffer_->getParFromID(saved_positions[i].par_id);
 752         if (par == buffer_->par_iterator_end())
 753                 return;
 754
 755         bv_->text->setCursor(par.pit(),
 756                              min(par->size(), saved_positions[i].par_pos));
 757
 758         update(BufferView::SELECT);
 759         if (i > 0)
 760                 owner_->message(bformat(_("Moved to bookmark %1$s"), tostr(i)));
 761 }
 762
 763
 764 bool BufferView::Pimpl::isSavedPosition(unsigned int i)
 765 {
 766         if (i >= saved_positions_num)
 767                 return false;
 768
 769         return !saved_positions[i].filename.empty();
 770 }
 771
 772
 773 void BufferView::Pimpl::switchKeyMap()
 774 {
 775         if (!lyxrc.rtl_support)
 776                 return;
 777
 778         LyXText * text = bv_->getLyXText();
 779         if (text->real_current_font.isRightToLeft()
 780             && !(bv_->theLockingInset()
 781                  && bv_->theLockingInset()->lyxCode() == Inset::ERT_CODE))
 782         {
 783                 if (owner_->getIntl().keymap == Intl::PRIMARY)
 784                         owner_->getIntl().KeyMapSec();
 785         } else {
 786                 if (owner_->getIntl().keymap == Intl::SECONDARY)
 787                         owner_->getIntl().KeyMapPrim();
 788         }
 789 }
 790
 791
 792 void BufferView::Pimpl::insetUnlock()
 793 {
 794         if (bv_->theLockingInset()) {
 795                 bv_->theLockingInset()->insetUnlock(bv_);
 796                 bv_->theLockingInset(0);
 797                 finishUndo();
 798         }
 799 }
 800
 801
 802 void BufferView::Pimpl::toggleSelection(bool b)
 803 {
 804         if (bv_->theLockingInset())
 805                 bv_->theLockingInset()->toggleSelection(bv_, b);
 806         screen().toggleSelection(bv_->text, bv_, b);
 807 }
 808
 809
 810 void BufferView::Pimpl::toggleToggle()
 811 {
 812         screen().toggleToggle(bv_->text, bv_);
 813 }
 814
 815
 816 void BufferView::Pimpl::center()
 817 {
 818         LyXText * t = bv_->text;
 819
 820         beforeChange(t);
 821         int const half_height = workarea().workHeight() / 2;
 822         int new_y = 0;
 823
 824         if (t->cursor.y() > half_height) {
 825                 new_y = t->cursor.y() - half_height;
 826         }
 827
 828         // FIXME: look at this comment again ...
 829
 830         // FIXME: can we do this w/o calling screen directly ?
 831         // This updates top_y() but means the fitCursor() call
 832         // from the update(FITCUR) doesn't realise that we might
 833         // have moved (e.g. from GOTOPARAGRAPH), so doesn't cause
 834         // the scrollbar to be updated as it should, so we have
 835         // to do it manually. Any operation that does a center()
 836         // and also might have moved top_y() must make sure to call
 837         // updateScrollbar() currently. Never mind that this is a
 838         // pretty obfuscated way of updating t->top_y()
 839         screen().draw(t, bv_, new_y);
 840
 841         update(BufferView::SELECT);
 842 }
 843
 844
 845 void BufferView::Pimpl::stuffClipboard(string const & stuff) const
 846 {
 847         workarea().putClipboard(stuff);
 848 }
 849
 850
 851 /*
 852  * Dispatch functions for actions which can be valid for BufferView->text
 853  * and/or InsetText->text!!!
 854  */
 855
 856
 857 Inset * BufferView::Pimpl::getInsetByCode(Inset::Code code)
 858 {
 859 #if 0
 860         LyXCursor cursor = bv_->getLyXText()->cursor;
 861         Buffer::inset_iterator it =
 862                 find_if(Buffer::inset_iterator(
 863                         cursor.par(), cursor.pos()),
 864                         buffer_->inset_iterator_end(),
 865                         lyx::compare_memfun(&Inset::lyxCode, code));
 866         return it != buffer_->inset_iterator_end() ? (*it) : 0;
 867 #else
 868         // Ok, this is a little bit too brute force but it
 869         // should work for now. Better infrastructure is comming. (Lgb)
 870
 871         Buffer * b = bv_->buffer();
 872         LyXCursor cursor = bv_->getLyXText()->cursor;
 873
 874         Buffer::inset_iterator beg = b->inset_iterator_begin();
 875         Buffer::inset_iterator end = b->inset_iterator_end();
 876
 877         bool cursor_par_seen = false;
 878
 879         for (; beg != end; ++beg) {
 880                 if (beg.getPar() == cursor.par()) {
 881                         cursor_par_seen = true;
 882                 }
 883                 if (cursor_par_seen) {
 884                         if (beg.getPar() == cursor.par()
 885                             && beg.getPos() >= cursor.pos()) {
 886                                 break;
 887                         } else if (beg.getPar() != cursor.par()) {
 888                                 break;
 889                         }
 890                 }
 891
 892         }
 893         if (beg != end) {
 894                 // Now find the first inset that matches code.
 895                 for (; beg != end; ++beg) {
 896                         if (beg->lyxCode() == code) {
 897                                 return &(*beg);
 898                         }
 899                 }
 900         }
 901         return 0;
 902 #endif
 903 }
 904
 905
 906 void BufferView::Pimpl::MenuInsertLyXFile(string const & filen)
 907 {
 908         string filename = filen;
 909
 910         if (filename.empty()) {
 911                 // Launch a file browser
 912                 string initpath = lyxrc.document_path;
 913
 914                 if (available()) {
 915                         string const trypath = owner_->buffer()->filePath();
 916                         // If directory is writeable, use this as default.
 917                         if (IsDirWriteable(trypath))
 918                                 initpath = trypath;
 919                 }
 920
 921                 FileDialog fileDlg(_("Select LyX document to insert"),
 922                         LFUN_FILE_INSERT,
 923                         make_pair(string(_("Documents|#o#O")),
 924                                   string(lyxrc.document_path)),
 925                         make_pair(string(_("Examples|#E#e")),
 926                                   string(AddPath(system_lyxdir, "examples"))));
 927
 928                 FileDialog::Result result =
 929                         fileDlg.open(initpath,
 930                                        _("*.lyx| LyX Documents (*.lyx)"));
 931
 932                 if (result.first == FileDialog::Later)
 933                         return;
 934
 935                 filename = result.second;
 936
 937                 // check selected filename
 938                 if (filename.empty()) {
 939                         owner_->message(_("Canceled."));
 940                         return;
 941                 }
 942         }
 943
 944         // get absolute path of file and add ".lyx" to the filename if
 945         // necessary
 946         filename = FileSearch(string(), filename, "lyx");
 947
 948         string const disp_fn = MakeDisplayPath(filename);
 949         owner_->message(bformat(_("Inserting document %1$s..."), disp_fn));
 950         bool const res = bv_->insertLyXFile(filename);
 951         if (res)
 952                 owner_->message(bformat(_("Document %1$s inserted."), disp_fn));
 953         else
 954                 owner_->message(bformat(_("Could not insert document %1$s"), disp_fn));
 955 }
 956
 957
 958 void BufferView::Pimpl::trackChanges()
 959 {
 960         Buffer * buf(bv_->buffer());
 961         bool const tracking(buf->params.tracking_changes);
 962
 963         if (!tracking) {
 964                 ParIterator const end = buf->par_iterator_end();
 965                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 966                         it->trackChanges();
 967                 buf->params.tracking_changes = true;
 968
 969                 // we cannot allow undos beyond the freeze point
 970                 buf->undostack.clear();
 971         } else {
 972                 update(BufferView::SELECT);
 973                 bv_->text->setCursor(buf->paragraphs.begin(), 0);
 974 #warning changes FIXME
 975                 //moveCursorUpdate(false);
 976
 977                 bool found = lyxfind::findNextChange(bv_);
 978                 if (found) {
 979                         owner_->getDialogs().show("changes");
 980                         return;
 981                 }
 982
 983                 ParIterator const end = buf->par_iterator_end();
 984                 for (ParIterator it = buf->par_iterator_begin(); it != end; ++it)
 985                         it->untrackChanges();
 986                 buf->params.tracking_changes = false;
 987         }
 988
 989         buf->redostack.clear();
 990 }
 991
 992
 993 // Doesn't go through lyxfunc, so we need to update the
 994 // layout choice etc. ourselves
 995 bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & ev_in)
 996 {
 997         // e.g. Qt mouse press when no buffer
 998         if (!available())
 999                 return false;
1000
1001         screen().hideCursor();
1002
1003         // Make sure that the cached BufferView is correct.
1004         FuncRequest ev = ev_in;
1005         ev.setView(bv_);
1006
1007         bool const res = dispatch(ev);
1008
1009         // see workAreaKeyPress
1010         cursor_timeout.restart();
1011         screen().showCursor(*bv_);
1012
1013         // FIXME: we should skip these when selecting
1014         bv_->owner()->updateLayoutChoice();
1015         bv_->owner()->updateToolbar();
1016         bv_->fitCursor();
1017
1018         // slight hack: this is only called currently when
1019         // we clicked somewhere, so we force through the display
1020         // of the new status here.
1021         bv_->owner()->clearMessage();
1022
1023         return res;
1024 }
1025
1026
1027 bool BufferView::Pimpl::dispatch(FuncRequest const & ev_in)
1028 {
1029         // Make sure that the cached BufferView is correct.
1030         FuncRequest ev = ev_in;
1031         ev.setView(bv_);
1032
1033         lyxerr[Debug::ACTION] << "BufferView::Pimpl::Dispatch:"
1034                 << " action[" << ev.action << ']'
1035                 << " arg[" << ev.argument << ']'
1036                 << " x[" << ev.x << ']'
1037                 << " y[" << ev.y << ']'
1038                 << " button[" << ev.button() << ']'
1039                 << endl;
1040
1041         LyXTextClass const & tclass = buffer_->params.getLyXTextClass();
1042
1043         switch (ev.action) {
1044
1045         case LFUN_SCROLL_INSET:
1046                 // this is not handled here as this function is only active
1047                 // if we have a locking_inset and that one is (or contains)
1048                 // a tabular-inset
1049                 break;
1050
1051         case LFUN_FILE_INSERT:
1052                 MenuInsertLyXFile(ev.argument);
1053                 break;
1054
1055         case LFUN_FILE_INSERT_ASCII_PARA:
1056                 InsertAsciiFile(bv_, ev.argument, true);
1057                 break;
1058
1059         case LFUN_FILE_INSERT_ASCII:
1060                 InsertAsciiFile(bv_, ev.argument, false);
1061                 break;
1062
1063         case LFUN_LANGUAGE:
1064                 lang(bv_, ev.argument);
1065                 switchKeyMap();
1066                 owner_->view_state_changed();
1067                 break;
1068
1069         case LFUN_EMPH:
1070                 emph(bv_);
1071                 owner_->view_state_changed();
1072                 break;
1073
1074         case LFUN_BOLD:
1075                 bold(bv_);
1076                 owner_->view_state_changed();
1077                 break;
1078
1079         case LFUN_NOUN:
1080                 noun(bv_);
1081                 owner_->view_state_changed();
1082                 break;
1083
1084         case LFUN_CODE:
1085                 code(bv_);
1086                 owner_->view_state_changed();
1087                 break;
1088
1089         case LFUN_SANS:
1090                 sans(bv_);
1091                 owner_->view_state_changed();
1092                 break;
1093
1094         case LFUN_ROMAN:
1095                 roman(bv_);
1096                 owner_->view_state_changed();
1097                 break;
1098
1099         case LFUN_DEFAULT:
1100                 styleReset(bv_);
1101                 owner_->view_state_changed();
1102                 break;
1103
1104         case LFUN_UNDERLINE:
1105                 underline(bv_);
1106                 owner_->view_state_changed();
1107                 break;
1108
1109         case LFUN_FONT_SIZE:
1110                 fontSize(bv_, ev.argument);
1111                 owner_->view_state_changed();
1112                 break;
1113
1114         case LFUN_FONT_STATE:
1115                 owner_->getLyXFunc().setMessage(currentState(bv_));
1116                 break;
1117
1118         case LFUN_INSERT_LABEL: {
1119                 // Try and generate a valid label
1120                 string const contents = ev.argument.empty() ?
1121                         getPossibleLabel(*bv_) : ev.argument;
1122                 InsetCommandParams icp("label", contents);
1123                 string data = InsetCommandMailer::params2string("label", icp);
1124                 owner_->getDialogs().show("label", data, 0);
1125         }
1126         break;
1127
1128         case LFUN_BOOKMARK_SAVE:
1129                 savePosition(strToUnsignedInt(ev.argument));
1130                 break;
1131
1132         case LFUN_BOOKMARK_GOTO:
1133                 restorePosition(strToUnsignedInt(ev.argument));
1134                 break;
1135
1136         case LFUN_REF_GOTO: {
1137                 string label = ev.argument;
1138                 if (label.empty()) {
1139                         InsetRef * inset =
1140                                 static_cast<InsetRef*>(getInsetByCode(Inset::REF_CODE));
1141                         if (inset) {
1142                                 label = inset->getContents();
1143                                 savePosition(0);
1144                         }
1145                 }
1146
1147                 if (!label.empty())
1148                         bv_->gotoLabel(label);
1149         }
1150         break;
1151
1152         // --- accented characters ---------------------------
1153
1154         case LFUN_UMLAUT:
1155         case LFUN_CIRCUMFLEX:
1156         case LFUN_GRAVE:
1157         case LFUN_ACUTE:
1158         case LFUN_TILDE:
1159         case LFUN_CEDILLA:
1160         case LFUN_MACRON:
1161         case LFUN_DOT:
1162         case LFUN_UNDERDOT:
1163         case LFUN_UNDERBAR:
1164         case LFUN_CARON:
1165         case LFUN_SPECIAL_CARON:
1166         case LFUN_BREVE:
1167         case LFUN_TIE:
1168         case LFUN_HUNG_UMLAUT:
1169         case LFUN_CIRCLE:
1170         case LFUN_OGONEK:
1171                 if (ev.argument.empty()) {
1172                         // As always...
1173                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1174                 } else {
1175                         owner_->getLyXFunc().handleKeyFunc(ev.action);
1176                         owner_->getIntl().getTransManager()
1177                                 .TranslateAndInsert(ev.argument[0], bv_->getLyXText());
1178                         update(bv_->getLyXText(), BufferView::SELECT);
1179                 }
1180                 break;
1181
1182         case LFUN_MATH_MACRO:
1183         case LFUN_MATH_DELIM:
1184         case LFUN_INSERT_MATRIX:
1185         case LFUN_INSERT_MATH:
1186         case LFUN_MATH_IMPORT_SELECTION: // Imports LaTeX from the X selection
1187         case LFUN_MATH_DISPLAY:          // Open or create a displayed math inset
1188         case LFUN_MATH_MODE:             // Open or create an inlined math inset
1189                 mathDispatch(ev);
1190                 break;
1191
1192         case LFUN_INSET_APPLY: {
1193                 string const name = ev.getArg(0);
1194
1195                 InsetBase * inset = owner_->getDialogs().getOpenInset(name);
1196                 if (inset) {
1197                         // This works both for 'original' and 'mathed' insets.
1198                         // Note that the localDispatch performs updateInset
1199                         // also.
1200                         FuncRequest fr(bv_, LFUN_INSET_MODIFY, ev.argument);
1201                         inset->localDispatch(fr);
1202                 } else {
1203                         FuncRequest fr(bv_, LFUN_INSET_INSERT, ev.argument);
1204                         dispatch(fr);
1205                 }
1206         }
1207         break;
1208
1209         case LFUN_INSET_INSERT: {
1210                 Inset * inset = createInset(ev);
1211                 if (inset && insertInset(inset)) {
1212                         updateInset(inset);
1213
1214                         string const name = ev.getArg(0);
1215                         if (name == "bibitem") {
1216                                 // We need to do a redraw because the maximum
1217                                 // InsetBibitem width could have changed
1218 #warning please check you mean repaint() not update(),
1219 #warning and whether the repaint() is needed at all
1220                                 bv_->repaint();
1221                                 bv_->fitCursor();
1222                         }
1223                 } else {
1224                         delete inset;
1225                 }
1226         }
1227         break;
1228
1229         case LFUN_FLOAT_LIST:
1230                 if (tclass.floats().typeExist(ev.argument)) {
1231                         Inset * inset = new InsetFloatList(ev.argument);
1232                         if (!insertInset(inset, tclass.defaultLayoutName()))
1233                                 delete inset;
1234                 } else {
1235                         lyxerr << "Non-existent float type: "
1236                                << ev.argument << endl;
1237                 }
1238                 break;
1239
1240         case LFUN_LAYOUT_PARAGRAPH: {
1241                 Paragraph const * par = &*bv_->getLyXText()->cursor.par();
1242                 if (!par)
1243                         break;
1244
1245                 string data;
1246                 params2string(*par, data);
1247
1248                 data = "show\n" + data;
1249                 bv_->owner()->getDialogs().show("paragraph", data);
1250                 break;
1251         }
1252
1253         case LFUN_PARAGRAPH_UPDATE: {
1254                 if (!bv_->owner()->getDialogs().visible("paragraph"))
1255                         break;
1256                 Paragraph const * par = &*bv_->getLyXText()->cursor.par();
1257                 if (!par)
1258                         break;
1259
1260                 string data;
1261                 params2string(*par, data);
1262
1263                 // Will the paragraph accept changes from the dialog?
1264                 Inset * const inset = par->inInset();
1265                 bool const accept =
1266                         !(inset && inset->forceDefaultParagraphs(inset));
1267
1268                 data = "update " + tostr(accept) + '\n' + data;
1269                 bv_->owner()->getDialogs().update("paragraph", data);
1270                 break;
1271         }
1272
1273         case LFUN_PARAGRAPH_APPLY:
1274                 setParagraphParams(*bv_, ev.argument);
1275                 break;
1276
1277         case LFUN_THESAURUS_ENTRY:
1278         {
1279                 string arg = ev.argument;
1280
1281                 if (arg.empty()) {
1282                         arg = bv_->getLyXText()->selectionAsString(buffer_,
1283                                                                    false);
1284
1285                         // FIXME
1286                         if (arg.size() > 100 || arg.empty()) {
1287                                 // Get word or selection
1288                                 bv_->getLyXText()->selectWordWhenUnderCursor(lyx::WHOLE_WORD);
1289                                 arg = bv_->getLyXText()->selectionAsString(buffer_, false);
1290                                 // FIXME: where is getLyXText()->unselect(bv_) ?
1291                         }
1292                 }
1293
1294                 bv_->owner()->getDialogs().show("thesaurus", arg);
1295         }
1296                 break;
1297
1298         case LFUN_TRACK_CHANGES:
1299                 trackChanges();
1300                 break;
1301
1302         case LFUN_MERGE_CHANGES:
1303                 owner_->getDialogs().show("changes");
1304                 break;
1305
1306         case LFUN_ACCEPT_ALL_CHANGES: {
1307                 update(BufferView::SELECT);
1308                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1309 #warning FIXME changes
1310                 //moveCursorUpdate(false);
1311
1312                 while (lyxfind::findNextChange(bv_)) {
1313                         bv_->getLyXText()->acceptChange();
1314                 }
1315                 update(BufferView::SELECT);
1316                 break;
1317         }
1318
1319         case LFUN_REJECT_ALL_CHANGES: {
1320                 update(BufferView::SELECT);
1321                 bv_->text->setCursor(bv_->buffer()->paragraphs.begin(), 0);
1322 #warning FIXME changes
1323                 //moveCursorUpdate(false);
1324
1325                 while (lyxfind::findNextChange(bv_)) {
1326                         bv_->getLyXText()->rejectChange();
1327                 }
1328                 update(BufferView::SELECT);
1329                 break;
1330         }
1331
1332         case LFUN_ACCEPT_CHANGE: {
1333                 bv_->getLyXText()->acceptChange();
1334                 update(BufferView::SELECT);
1335                 break;
1336         }
1337
1338         case LFUN_REJECT_CHANGE: {
1339                 bv_->getLyXText()->rejectChange();
1340                 update(BufferView::SELECT);
1341                 break;
1342         }
1343
1344         case LFUN_UNKNOWN_ACTION:
1345                 ev.errorMessage(N_("Unknown function!"));
1346                 break;
1347
1348         default:
1349                 return bv_->getLyXText()->dispatch(FuncRequest(ev, bv_));
1350         } // end of switch
1351
1352         return true;
1353 }
1354
1355
1356 bool BufferView::Pimpl::insertInset(Inset * inset, string const & lout)
1357 {
1358         // if we are in a locking inset we should try to insert the
1359         // inset there otherwise this is a illegal function now
1360         if (bv_->theLockingInset()) {
1361                 if (bv_->theLockingInset()->insetAllowed(inset))
1362                         return bv_->theLockingInset()->insertInset(bv_, inset);
1363                 return false;
1364         }
1365
1366         // not quite sure if we want this...
1367         setCursorParUndo(bv_);
1368         freezeUndo();
1369
1370         beforeChange(bv_->text);
1371         if (!lout.empty()) {
1372                 update(BufferView::SELECT);
1373                 bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1374                 update(BufferView::SELECT);
1375
1376                 if (!bv_->text->cursor.par()->empty()) {
1377                         bv_->text->cursorLeft(bv_);
1378
1379                         bv_->text->breakParagraph(bv_->buffer()->paragraphs);
1380                         update(BufferView::SELECT);
1381                 }
1382
1383                 string lres = lout;
1384                 LyXTextClass const & tclass =
1385                         buffer_->params.getLyXTextClass();
1386                 bool hasLayout = tclass.hasLayout(lres);
1387                 string lay = tclass.defaultLayoutName();
1388
1389                 if (hasLayout != false) {
1390                         // layout found
1391                         lay = lres;
1392                 } else {
1393                         // layout not fount using default
1394                         lay = tclass.defaultLayoutName();
1395                 }
1396
1397                 bv_->text->setLayout(lay);
1398
1399                 bv_->text->setParagraph(0, 0,
1400                                    0, 0,
1401                                    VSpace(VSpace::NONE), VSpace(VSpace::NONE),
1402                                    Spacing(),
1403                                    LYX_ALIGN_LAYOUT,
1404                                    string(),
1405                                    0);
1406                 update(BufferView::SELECT);
1407         }
1408
1409         bv_->text->insertInset(inset);
1410         update(BufferView::SELECT);
1411
1412         unFreezeUndo();
1413         return true;
1414 }
1415
1416
1417 void BufferView::Pimpl::updateInset(Inset * inset)
1418 {
1419         if (!inset || !available())
1420                 return;
1421
1422         // first check for locking insets
1423         if (bv_->theLockingInset()) {
1424                 if (bv_->theLockingInset() == inset) {
1425                         if (bv_->text->updateInset(inset)) {
1426                                 update();
1427                                 updateScrollbar();
1428                                 return;
1429                         }
1430                 } else if (bv_->theLockingInset()->updateInsetInInset(bv_, inset)) {
1431                         if (bv_->text->updateInset(bv_->theLockingInset())) {
1432                                 update();
1433                                 updateScrollbar();
1434                                 return;
1435                         }
1436                 }
1437         }
1438
1439         // then check if the inset is a top_level inset (has no owner)
1440         // if yes do the update as always otherwise we have to update the
1441         // toplevel inset where this inset is inside
1442         Inset * tl_inset = inset;
1443         while (tl_inset->owner())
1444                 tl_inset = tl_inset->owner();
1445         if (tl_inset == inset) {
1446                 update(BufferView::UPDATE);
1447                 if (bv_->text->updateInset(inset)) {
1448                         update(BufferView::SELECT);
1449                         return;
1450                 }
1451         } else if (static_cast<UpdatableInset *>(tl_inset)
1452                            ->updateInsetInInset(bv_, inset))
1453         {
1454                 if (bv_->text->updateInset(tl_inset)) {
1455                         update();
1456                         updateScrollbar();
1457                 }
1458         }
1459 }