]> git.lyx.org Git - lyx.git/blobdiff - src/BufferView.C
Optimize drawing.
[lyx.git] / src / BufferView.C
index 573da75b7a14cc6ecbf575a810a59c445e8a433d..d1d768ac36b652dc994091710f066efa08d17265 100644 (file)
 #include "BufferView.h"
 
 #include "buffer.h"
+#include "buffer_funcs.h"
 #include "bufferlist.h"
 #include "bufferparams.h"
-#include "BufferView_pimpl.h"
+#include "coordcache.h"
+#include "CutAndPaste.h"
 #include "debug.h"
+#include "dispatchresult.h"
+#include "errorlist.h"
+#include "factory.h"
+#include "FloatList.h"
 #include "funcrequest.h"
+#include "FuncStatus.h"
 #include "gettext.h"
-#include "iterators.h"
+#include "intl.h"
+#include "insetiterator.h"
 #include "language.h"
+#include "LaTeXFeatures.h"
+#include "lyx_cb.h" // added for Dispatch functions
+#include "lyx_main.h"
+#include "lyxfind.h"
+#include "lyxfunc.h"
 #include "lyxlayout.h"
 #include "lyxtext.h"
 #include "lyxtextclass.h"
+#include "lyxrc.h"
+#include "session.h"
 #include "paragraph.h"
 #include "paragraph_funcs.h"
-#include "PosIterator.h"
+#include "ParagraphParameters.h"
+#include "pariterator.h"
 #include "texrow.h"
+#include "toc.h"
 #include "undo.h"
+#include "vspace.h"
 #include "WordLangTuple.h"
+#include "metricsinfo.h"
 
-#include "frontends/Alert.h"
-#include "frontends/Dialogs.h"
-#include "frontends/LyXView.h"
-#include "frontends/screen.h"
-#include "frontends/WorkArea.h"
-
+#include "insets/insetbibtex.h"
 #include "insets/insetcommand.h" // ChangeRefs
-#include "insets/updatableinset.h"
+#include "insets/insetref.h"
 #include "insets/insettext.h"
 
+#include "frontends/Alert.h"
+#include "frontends/FileDialog.h"
+#include "frontends/FontMetrics.h"
+
+#include "graphics/Previews.h"
+
+#include "support/convert.h"
+#include "support/filefilterlist.h"
 #include "support/filetools.h"
-#include "support/lyxalgo.h" // lyx_count
+#include "support/package.h"
+#include "support/types.h"
+
+#include <boost/bind.hpp>
+#include <boost/current_function.hpp>
+
+#include <functional>
+#include <vector>
 
-using lyx::support::bformat;
-using lyx::support::MakeAbsPath;
+
+namespace lyx {
+
+using support::addPath;
+using support::bformat;
+using support::FileFilterList;
+using support::fileSearch;
+using support::isDirWriteable;
+using support::makeDisplayPath;
+using support::makeAbsPath;
+using support::package;
 
 using std::distance;
-using std::find;
+using std::endl;
+using std::istringstream;
+using std::make_pair;
+using std::min;
+using std::max;
+using std::mem_fun_ref;
 using std::string;
-using std::swap;
 using std::vector;
 
+namespace Alert = frontend::Alert;
 
-extern BufferList bufferlist;
+namespace {
 
+/// Return an inset of this class if it exists at the current cursor position
+template <class T>
+T * getInsetByCode(LCursor & cur, InsetBase::Code code)
+{
+       T * inset = 0;
+       DocIterator it = cur;
+       if (it.nextInset() &&
+           it.nextInset()->lyxCode() == code) {
+               inset = static_cast<T*>(it.nextInset());
+       }
+       return inset;
+}
 
-BufferView::BufferView(LyXView * owner, int xpos, int ypos,
-                      int width, int height)
-       : pimpl_(new Pimpl(*this, owner, xpos, ypos, width, height))
-{}
+} // anon namespace
 
 
-BufferView::~BufferView()
+BufferView::BufferView()
+       : width_(0), height_(0), buffer_(0), wh_(0),
+         cursor_(*this),
+         multiparsel_cache_(false), anchor_ref_(0), offset_ref_(0),
+         intl_(new Intl)
 {
-       delete pimpl_;
+       xsel_cache_.set = false;
+       intl_->initKeyMapper(lyxrc.use_kbmap);
 }
 
 
-void BufferView::unsetXSel()
+BufferView::~BufferView()
 {
-       pimpl_->xsel_cache_.set = false;
 }
 
 
 Buffer * BufferView::buffer() const
 {
-       return pimpl_->buffer_;
+       return buffer_;
 }
 
 
-LyXScreen & BufferView::screen() const
+void BufferView::setBuffer(Buffer * b)
 {
-       return pimpl_->screen();
-}
+       lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
+                           << "[ b = " << b << "]" << endl;
+
+       if (buffer_) {
+               // Save the actual cursor position and anchor inside the
+               // buffer so that it can be restored in case we rechange
+               // to this buffer later on.
+               buffer_->saveCursor(cursor_.selectionBegin(),
+                                   cursor_.selectionEnd());
+               // current buffer is going to be switched-off, save cursor pos
+               LyX::ref().session().lastFilePos().save(buffer_->fileName(),
+                       boost::tie(cursor_.pit(), cursor_.pos()) );
+       }
 
+       // If we're quitting lyx, don't bother updating stuff
+       if (quitting) {
+               buffer_ = 0;
+               return;
+       }
 
-LyXView * BufferView::owner() const
-{
-       return pimpl_->owner_;
-}
+       // If we are closing current buffer, switch to the first in
+       // buffer list.
+       if (!b) {
+               lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
+                                   << " No Buffer!" << endl;
+               // We are closing the buffer, use the first buffer as current
+               buffer_ = theBufferList().first();
+       } else {
+               // Set current buffer
+               buffer_ = b;
+       }
 
+       // Reset old cursor
+       cursor_ = LCursor(*this);
+       anchor_ref_ = 0;
+       offset_ref_ = 0;
+
+       if (buffer_) {
+               lyxerr[Debug::INFO] << BOOST_CURRENT_FUNCTION
+                                   << "Buffer addr: " << buffer_ << endl;
+               cursor_.push(buffer_->inset());
+               cursor_.resetAnchor();
+               buffer_->text().init(this);
+               buffer_->text().setCurrentFont(cursor_);
+               if (buffer_->getCursor().size() > 0 &&
+                   buffer_->getAnchor().size() > 0)
+               {
+                       cursor_.setCursor(buffer_->getAnchor().asDocIterator(&(buffer_->inset())));
+                       cursor_.resetAnchor();
+                       cursor_.setCursor(buffer_->getCursor().asDocIterator(&(buffer_->inset())));
+                       cursor_.setSelection();
+               }
+       }
 
-Painter & BufferView::painter() const
-{
-       return pimpl_->painter();
+       update();
+
+       if (buffer_ && graphics::Previews::status() != LyXRC::PREVIEW_OFF)
+               graphics::Previews::get().generateBufferPreviews(*buffer_);
 }
 
 
-void BufferView::setBuffer(Buffer * b)
+bool BufferView::loadLyXFile(string const & filename, bool tolastfiles)
 {
-       pimpl_->setBuffer(b);
-}
+       // Get absolute path of file and add ".lyx"
+       // to the filename if necessary
+       string s = fileSearch(string(), filename, "lyx");
+
+       bool const found = !s.empty();
+
+       if (!found)
+               s = filename;
+
+       // File already open?
+       if (theBufferList().exists(s)) {
+               docstring const file = makeDisplayPath(s, 20);
+               docstring text = bformat(_("The document %1$s is already "
+                                                    "loaded.\n\nDo you want to revert "
+                                                    "to the saved version?"), file);
+               int const ret = Alert::prompt(_("Revert to saved document?"),
+                       text, 0, 1,  _("&Revert"), _("&Switch to document"));
+
+               if (ret != 0) {
+                       setBuffer(theBufferList().getBuffer(s));
+                       return true;
+               }
+               // FIXME: should be LFUN_REVERT
+               if (!theBufferList().close(theBufferList().getBuffer(s), false))
+                       return false;
+               // Fall through to new load. (Asger)
+               buffer_ = 0;
+       }
 
+       Buffer * b = 0;
 
-void BufferView::newFile(string const & fn, string const & tn, bool named)
-{
-       pimpl_->newFile(fn, tn, named);
-}
+       if (found) {
+               b = theBufferList().newBuffer(s);
+               if (!lyx::loadLyXFile(b, s)) {
+                       theBufferList().release(b);
+                       return false;
+               }
+       } else {
+               docstring text = bformat(_("The document %1$s does not yet "
+                                                    "exist.\n\nDo you want to create "
+                                                    "a new document?"), from_utf8(s));
+               int const ret = Alert::prompt(_("Create new document?"),
+                        text, 0, 1, _("&Create"), _("Cancel"));
+
+               if (ret == 0) {
+                       b = newFile(s, string(), true);
+                       if (!b)
+                               return false;
+               } else
+                       return false;
+       }
 
+       setBuffer(b);
+       // Send the "errors" signal in case of parsing errors
+       b->errors("Parse");
+
+       // scroll to the position when the file was last closed
+       if (lyxrc.use_lastfilepos) {
+               pit_type pit;
+               pos_type pos;
+               boost::tie(pit, pos) = LyX::ref().session().lastFilePos().load(s);
+               // I am not sure how to separate the following part to a function
+               // so I will leave this to Lars.
+               //
+               // check pit since the document may be externally changed.
+               if ( static_cast<size_t>(pit) < b->paragraphs().size() ) {
+                       ParIterator it = b->par_iterator_begin();
+                       ParIterator const end = b->par_iterator_end();
+                       for (; it != end; ++it)
+                               if (it.pit() == pit) {
+                                       // restored pos may be bigger than it->size
+                                       setCursor(makeDocIterator(it, min(pos, it->size())));
+                                       update(Update::FitCursor);
+                                       break;
+                               }
+               }
+       }
 
-bool BufferView::loadLyXFile(string const & fn, bool tl)
-{
-       return pimpl_->loadLyXFile(fn, tl);
+       if (tolastfiles)
+               LyX::ref().session().lastFiles().add(b->fileName());
+
+       return true;
 }
 
 
 void BufferView::reload()
 {
-       string const fn = buffer()->fileName();
-       if (bufferlist.close(buffer(), false))
+       string const fn = buffer_->fileName();
+       if (theBufferList().close(buffer_, false))
                loadLyXFile(fn);
 }
 
 
 void BufferView::resize()
 {
-       if (pimpl_->buffer_)
-               pimpl_->resizeCurrentBuffer();
+       if (!buffer_)
+               return;
+
+       lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION << endl;
+
+       buffer_->text().init(this);
+       update();
+       switchKeyMap();
 }
 
 
 bool BufferView::fitCursor()
 {
-       return pimpl_->fitCursor();
+       if (bv_funcs::status(this, cursor_) == bv_funcs::CUR_INSIDE) {
+               frontend::FontMetrics const & fm =
+                       theFontMetrics(cursor_.getFont());
+               int const asc = fm.maxAscent();
+               int const des = fm.maxDescent();
+               Point const p = bv_funcs::getPos(*this, cursor_, cursor_.boundary());
+               if (p.y_ - asc >= 0 && p.y_ + des < height_)
+                       return false;
+       }
+       center();
+       return true;
 }
 
 
-void BufferView::update()
+bool BufferView::multiParSel()
 {
-       pimpl_->update();
+       if (!cursor_.selection())
+               return false;
+       bool ret = multiparsel_cache_;
+       multiparsel_cache_ = cursor_.selBegin().pit() != cursor_.selEnd().pit();
+       // Either this, or previous selection spans paragraphs
+       return ret || multiparsel_cache_;
 }
 
 
-void BufferView::updateScrollbar()
+std::pair<bool, bool> BufferView::update(Update::flags flags)
 {
-       pimpl_->updateScrollbar();
+       // This is close to a hot-path.
+       if (lyxerr.debugging(Debug::DEBUG)) {
+               lyxerr[Debug::DEBUG]
+                       << BOOST_CURRENT_FUNCTION
+                       << "[fitcursor = " << (flags & Update::FitCursor)
+                       << ", forceupdate = " << (flags & Update::Force)
+                       << ", singlepar = " << (flags & Update::SinglePar)
+                       << "]  buffer: " << buffer_ << endl;
+       }
+
+       // Check needed to survive LyX startup
+       if (!buffer_)
+               return make_pair(false, false);
+
+       if (lyxerr.debugging(Debug::WORKAREA)) {
+               lyxerr[Debug::WORKAREA] << "BufferView::update" << std::endl;
+       }
+
+       // Update macro store
+       buffer_->buildMacros();
+
+       // Now do the first drawing step if needed. This consists on updating
+       // the CoordCache in updateMetrics().
+       // The second drawing step is done in WorkArea::redraw() if needed.
+
+       // Case when no explicit update is requested.
+       if (!(flags & (Update::SinglePar | Update::Force))) {
+               if (fitCursor() || multiParSel()) {
+                       // a CoordCache update is needed
+                       updateMetrics(false);
+                       // tell the frontend to update the screen.
+                       return make_pair(true, false);
+               }
+               // no need to do anything.
+               return make_pair(false, false);
+       }
+
+       // We are now in the case (Update::SinglePar | Update::Force)
+       bool single_par = flags & Update::SinglePar;
+       updateMetrics(single_par);
+
+       // Don't forget to do check for fitCursor() and multiParSel().
+       fitCursor();
+       multiParSel();
+
+       return make_pair(true, single_par);
 }
 
 
-void BufferView::scrollDocView(int value)
+void BufferView::updateScrollbar()
 {
-       pimpl_->scrollDocView(value);
+       if (!buffer_) {
+               lyxerr[Debug::DEBUG] << BOOST_CURRENT_FUNCTION
+                                    << " no text in updateScrollbar" << endl;
+               scrollbarParameters_.reset();
+               return;
+       }
+
+       LyXText & t = buffer_->text();
+       int const parsize = int(t.paragraphs().size() - 1);
+       if (anchor_ref_ >  parsize)  {
+               anchor_ref_ = parsize;
+               offset_ref_ = 0;
+       }
+
+       if (lyxerr.debugging(Debug::GUI)) {
+               lyxerr[Debug::GUI]
+                       << BOOST_CURRENT_FUNCTION
+                       << " Updating scrollbar: height: " << t.paragraphs().size()
+                       << " curr par: " << cursor_.bottom().pit()
+                       << " default height " << defaultRowHeight() << endl;
+       }
+
+       // It would be better to fix the scrollbar to understand
+       // values in [0..1] and divide everything by wh
+
+       // estimated average paragraph height:
+       if (wh_ == 0)
+               wh_ = height_ / 4;
+       int h = t.getPar(anchor_ref_).height();
+
+       // Normalize anchor/offset (MV):
+       while (offset_ref_ > h && anchor_ref_ < parsize) {
+               anchor_ref_++;
+               offset_ref_ -= h;
+               h = t.getPar(anchor_ref_).height();
+       }
+       // Look at paragraph heights on-screen
+       int sumh = 0;
+       int nh = 0;
+       for (pit_type pit = anchor_ref_; pit <= parsize; ++pit) {
+               if (sumh > height_)
+                       break;
+               int const h2 = t.getPar(pit).height();
+               sumh += h2;
+               nh++;
+       }
+
+       BOOST_ASSERT(nh);
+       int const hav = sumh / nh;
+       // More realistic average paragraph height
+       if (hav > wh_)
+               wh_ = hav;
+
+       BOOST_ASSERT(h);
+       scrollbarParameters_.height = (parsize + 1) * wh_;
+       scrollbarParameters_.position = anchor_ref_ * wh_ + int(offset_ref_ * wh_ / float(h));
+       scrollbarParameters_.lineScrollHeight = int(wh_ * defaultRowHeight() / float(h));
 }
 
 
-void BufferView::redoCurrentBuffer()
+ScrollbarParameters const & BufferView::scrollbarParameters() const
 {
-       pimpl_->redoCurrentBuffer();
+       return scrollbarParameters_;
 }
 
 
-bool BufferView::available() const
+void BufferView::scrollDocView(int value)
 {
-       return pimpl_->available();
+       lyxerr[Debug::GUI] << BOOST_CURRENT_FUNCTION
+                          << "[ value = " << value << "]" << endl;
+
+       if (!buffer_)
+               return;
+
+       LyXText & t = buffer_->text();
+
+       float const bar = value / float(wh_ * t.paragraphs().size());
+
+       anchor_ref_ = int(bar * t.paragraphs().size());
+       if (anchor_ref_ >  int(t.paragraphs().size()) - 1)
+               anchor_ref_ = int(t.paragraphs().size()) - 1;
+       t.redoParagraph(*this, anchor_ref_);
+       int const h = t.getPar(anchor_ref_).height();
+       offset_ref_ = int((bar * t.paragraphs().size() - anchor_ref_) * h);
 }
 
 
-Change const BufferView::getCurrentChange()
+void BufferView::setCursorFromScrollbar()
 {
-       return pimpl_->getCurrentChange();
+       LyXText & t = buffer_->text();
+
+       int const height = 2 * defaultRowHeight();
+       int const first = height;
+       int const last = height_ - height;
+       LCursor & cur = cursor_;
+
+       bv_funcs::CurStatus st = bv_funcs::status(this, cur);
+
+       switch (st) {
+       case bv_funcs::CUR_ABOVE:
+               t.setCursorFromCoordinates(cur, 0, first);
+               cur.clearSelection();
+               break;
+       case bv_funcs::CUR_BELOW:
+               t.setCursorFromCoordinates(cur, 0, last);
+               cur.clearSelection();
+               break;
+       case bv_funcs::CUR_INSIDE:
+               int const y = bv_funcs::getPos(*this, cur, cur.boundary()).y_;
+               int const newy = min(last, max(y, first));
+               if (y != newy) {
+                       cur.reset(buffer_->inset());
+                       t.setCursorFromCoordinates(cur, 0, newy);
+               }
+       }
 }
 
 
-void BufferView::savePosition(unsigned int i)
+Change const BufferView::getCurrentChange() const
 {
-       pimpl_->savePosition(i);
+       if (!cursor_.selection())
+               return Change(Change::UNCHANGED);
+
+       DocIterator dit = cursor_.selectionBegin();
+       return dit.paragraph().lookupChange(dit.pos());
 }
 
 
-void BufferView::restorePosition(unsigned int i)
+void BufferView::saveBookmark(bool persistent)
 {
-       pimpl_->restorePosition(i);
+       LyX::ref().session().bookmarks().save(
+               buffer_->fileName(),
+               cursor_.paragraph().id(),
+               cursor_.pos(),
+               persistent
+       );
+       if (persistent)
+               // emit message signal.
+               message(_("Save bookmark"));
 }
 
 
-bool BufferView::isSavedPosition(unsigned int i)
+void BufferView::moveToPosition(int par_id, pos_type par_pos)
 {
-       return pimpl_->isSavedPosition(i);
+       cursor_.clearSelection();
+
+       ParIterator par = buffer_->getParFromID(par_id);
+       if (par == buffer_->par_iterator_end())
+               return;
+
+       setCursor(makeDocIterator(par, min(par->size(), par_pos)));
 }
 
 
 void BufferView::switchKeyMap()
 {
-       pimpl_->switchKeyMap();
+       if (!lyxrc.rtl_support)
+               return;
+
+       if (getLyXText()->real_current_font.isRightToLeft()) {
+               if (intl_->keymap == Intl::PRIMARY)
+                       intl_->keyMapSec();
+       } else {
+               if (intl_->keymap == Intl::SECONDARY)
+                       intl_->keyMapPrim();
+       }
 }
 
 
 int BufferView::workWidth() const
 {
-       return pimpl_->workarea().workWidth();
+       return width_;
 }
 
 
 void BufferView::center()
 {
-       pimpl_->center();
+       CursorSlice & bot = cursor_.bottom();
+       pit_type const pit = bot.pit();
+       bot.text()->redoParagraph(*this, pit);
+       Paragraph const & par = bot.text()->paragraphs()[pit];
+       anchor_ref_ = pit;
+       offset_ref_ = bv_funcs::coordOffset(*this, cursor_, cursor_.boundary()).y_
+               + par.ascent() - height_ / 2;
 }
 
 
-int BufferView::top_y() const
+FuncStatus BufferView::getStatus(FuncRequest const & cmd)
 {
-       return pimpl_->top_y();
-}
+       FuncStatus flag;
+
+       switch (cmd.action) {
+
+       case LFUN_UNDO:
+               flag.enabled(!buffer_->undostack().empty());
+               break;
+       case LFUN_REDO:
+               flag.enabled(!buffer_->redostack().empty());
+               break;
+       case LFUN_FILE_INSERT:
+       case LFUN_FILE_INSERT_ASCII_PARA:
+       case LFUN_FILE_INSERT_ASCII:
+       case LFUN_BOOKMARK_SAVE:
+               // FIXME: Actually, these LFUNS should be moved to LyXText
+               flag.enabled(cursor_.inTexted());
+               break;
+       case LFUN_FONT_STATE:
+       case LFUN_LABEL_INSERT:
+       case LFUN_PARAGRAPH_GOTO:
+       // FIXME handle non-trivially
+       case LFUN_OUTLINE_UP:
+       case LFUN_OUTLINE_DOWN:
+       case LFUN_OUTLINE_IN:
+       case LFUN_OUTLINE_OUT:
+       case LFUN_NOTE_NEXT:
+       case LFUN_REFERENCE_NEXT:
+       case LFUN_WORD_FIND:
+       case LFUN_WORD_REPLACE:
+       case LFUN_MARK_OFF:
+       case LFUN_MARK_ON:
+       case LFUN_MARK_TOGGLE:
+       case LFUN_SCREEN_RECENTER:
+       case LFUN_BIBTEX_DATABASE_ADD:
+       case LFUN_BIBTEX_DATABASE_DEL:
+       case LFUN_WORDS_COUNT:
+       case LFUN_NEXT_INSET_TOGGLE:
+               flag.enabled(true);
+               break;
+
+       case LFUN_LABEL_GOTO: {
+               flag.enabled(!cmd.argument().empty()
+                   || getInsetByCode<InsetRef>(cursor_, InsetBase::REF_CODE));
+               break;
+       }
 
+       case LFUN_CHANGES_TRACK:
+               flag.enabled(true);
+               flag.setOnOff(buffer_->params().trackChanges);
+               break;
+
+       case LFUN_CHANGES_OUTPUT: {
+               OutputParams runparams;
+               LaTeXFeatures features(*buffer_, buffer_->params(), runparams);
+               flag.enabled(buffer_ && features.isAvailable("dvipost"));
+               flag.setOnOff(buffer_->params().outputChanges);
+               break;
+       }
 
-void BufferView::top_y(int y)
-{
-       pimpl_->top_y(y);
-}
+       case LFUN_CHANGES_MERGE:
+       case LFUN_CHANGE_NEXT:
+       case LFUN_ALL_CHANGES_ACCEPT:
+       case LFUN_ALL_CHANGES_REJECT:
+               flag.enabled(buffer_); // FIXME: Change tracking (MG)
+               break;
 
+       case LFUN_BUFFER_TOGGLE_COMPRESSION: {
+               flag.setOnOff(buffer_->params().compressed);
+               break;
+       }
 
-string const BufferView::getClipboard() const
-{
-       return pimpl_->workarea().getClipboard();
+       default:
+               flag.enabled(false);
+       }
+
+       return flag;
 }
 
 
-void BufferView::stuffClipboard(string const & stuff) const
+bool BufferView::dispatch(FuncRequest const & cmd)
 {
-       pimpl_->stuffClipboard(stuff);
+       //lyxerr << BOOST_CURRENT_FUNCTION
+       //       << [ cmd = " << cmd << "]" << endl;
+
+       // Make sure that the cached BufferView is correct.
+       lyxerr[Debug::ACTION] << BOOST_CURRENT_FUNCTION
+               << " action[" << cmd.action << ']'
+               << " arg[" << to_utf8(cmd.argument()) << ']'
+               << " x[" << cmd.x << ']'
+               << " y[" << cmd.y << ']'
+               << " button[" << cmd.button() << ']'
+               << endl;
+
+       LCursor & cur = cursor_;
+
+       switch (cmd.action) {
+
+       case LFUN_UNDO:
+               if (buffer_) {
+                       cur.message(_("Undo"));
+                       cur.clearSelection();
+                       if (!textUndo(*this))
+                               cur.message(_("No further undo information"));
+                       update();
+                       switchKeyMap();
+               }
+               break;
+
+       case LFUN_REDO:
+               if (buffer_) {
+                       cur.message(_("Redo"));
+                       cur.clearSelection();
+                       if (!textRedo(*this))
+                               cur.message(_("No further redo information"));
+                       update();
+                       switchKeyMap();
+               }
+               break;
+
+       case LFUN_FILE_INSERT:
+               // FIXME: We don't know the encoding of filenames
+               menuInsertLyXFile(to_utf8(cmd.argument()));
+               break;
+
+       case LFUN_FILE_INSERT_ASCII_PARA:
+               // FIXME: We don't know the encoding of filenames
+               insertAsciiFile(this, to_utf8(cmd.argument()), true);
+               break;
+
+       case LFUN_FILE_INSERT_ASCII:
+               // FIXME: We don't know the encoding of filenames
+               insertAsciiFile(this, to_utf8(cmd.argument()), false);
+               break;
+
+       case LFUN_FONT_STATE:
+               cur.message(from_utf8(cur.currentState()));
+               break;
+
+       case LFUN_BOOKMARK_SAVE:
+               saveBookmark(convert<unsigned int>(to_utf8(cmd.argument())));
+               break;
+
+       case LFUN_LABEL_GOTO: {
+               docstring label = cmd.argument();
+               if (label.empty()) {
+                       InsetRef * inset =
+                               getInsetByCode<InsetRef>(cursor_,
+                                                        InsetBase::REF_CODE);
+                       if (inset) {
+                               label = inset->getParam("reference");
+                               // persistent=false: use temp_bookmark
+                               saveBookmark(false);
+                       }
+               }
+
+               if (!label.empty())
+                       gotoLabel(label);
+               break;
+       }
+
+       case LFUN_PARAGRAPH_GOTO: {
+               int const id = convert<int>(to_utf8(cmd.argument()));
+               int i = 0;
+               for (Buffer * b = buffer_; i == 0 || b != buffer_; b = theBufferList().next(b)) {
+                       ParIterator par = b->getParFromID(id);
+                       if (par == b->par_iterator_end()) {
+                               lyxerr[Debug::INFO]
+                                       << "No matching paragraph found! ["
+                                       << id << "]." << endl;
+                       } else {
+                               lyxerr[Debug::INFO]
+                                       << "Paragraph " << par->id()
+                                       << " found in buffer `"
+                                       << b->fileName() << "'." << endl;
+
+                               if (b == buffer_) {
+                                       // Set the cursor
+                                       setCursor(makeDocIterator(par, 0));
+                                       update();
+                                       switchKeyMap();
+                               } else {
+                                       // Switch to other buffer view and resend cmd
+                                       theLyXFunc().dispatch(FuncRequest(
+                                               LFUN_BUFFER_SWITCH, b->fileName()));
+                                       theLyXFunc().dispatch(cmd);
+                               }
+                               break;
+                       }
+                       ++i;
+               }
+               break;
+       }
+
+       case LFUN_OUTLINE_UP:
+               toc::outline(toc::Up, cursor_);
+               cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
+               updateLabels(*buffer_);
+               break;
+       case LFUN_OUTLINE_DOWN:
+               toc::outline(toc::Down, cursor_);
+               cursor_.text()->setCursor(cursor_, cursor_.pit(), 0);
+               updateLabels(*buffer_);
+               break;
+       case LFUN_OUTLINE_IN:
+               toc::outline(toc::In, cursor_);
+               updateLabels(*buffer_);
+               break;
+       case LFUN_OUTLINE_OUT:
+               toc::outline(toc::Out, cursor_);
+               updateLabels(*buffer_);
+               break;
+
+       case LFUN_NOTE_NEXT:
+               bv_funcs::gotoInset(this, InsetBase::NOTE_CODE, false);
+               break;
+
+       case LFUN_REFERENCE_NEXT: {
+               vector<InsetBase_code> tmp;
+               tmp.push_back(InsetBase::LABEL_CODE);
+               tmp.push_back(InsetBase::REF_CODE);
+               bv_funcs::gotoInset(this, tmp, true);
+               break;
+       }
+
+       case LFUN_CHANGES_TRACK:
+               buffer_->params().trackChanges = !buffer_->params().trackChanges;
+               break;
+
+       case LFUN_CHANGES_OUTPUT: {
+               buffer_->params().outputChanges = !buffer_->params().outputChanges;
+               break;
+       }
+
+       case LFUN_CHANGE_NEXT:
+               findNextChange(this);
+               break;
+
+       case LFUN_CHANGES_MERGE:
+               if (findNextChange(this))
+                       showDialog("changes");
+               break;
+
+       case LFUN_ALL_CHANGES_ACCEPT: {
+               cursor_.reset(buffer_->inset());
+#ifdef WITH_WARNINGS
+#warning FIXME changes
+#endif
+               while (findNextChange(this))
+                       getLyXText()->acceptChange(cursor_);
+               update();
+               break;
+       }
+
+       case LFUN_ALL_CHANGES_REJECT: {
+               cursor_.reset(buffer_->inset());
+#ifdef WITH_WARNINGS
+#warning FIXME changes
+#endif
+               while (findNextChange(this))
+                       getLyXText()->rejectChange(cursor_);
+               break;
+       }
+
+       case LFUN_WORD_FIND:
+               find(this, cmd);
+               break;
+
+       case LFUN_WORD_REPLACE:
+               replace(this, cmd);
+               break;
+
+       case LFUN_MARK_OFF:
+               cur.clearSelection();
+               cur.resetAnchor();
+               cur.message(from_utf8(N_("Mark off")));
+               break;
+
+       case LFUN_MARK_ON:
+               cur.clearSelection();
+               cur.mark() = true;
+               cur.resetAnchor();
+               cur.message(from_utf8(N_("Mark on")));
+               break;
+
+       case LFUN_MARK_TOGGLE:
+               cur.clearSelection();
+               if (cur.mark()) {
+                       cur.mark() = false;
+                       cur.message(from_utf8(N_("Mark removed")));
+               } else {
+                       cur.mark() = true;
+                       cur.message(from_utf8(N_("Mark set")));
+               }
+               cur.resetAnchor();
+               break;
+
+       case LFUN_SCREEN_RECENTER:
+               center();
+               break;
+
+       case LFUN_BIBTEX_DATABASE_ADD: {
+               LCursor tmpcur = cursor_;
+               bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
+               InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
+                                               InsetBase::BIBTEX_CODE);
+               if (inset) {
+                       if (inset->addDatabase(to_utf8(cmd.argument())))
+                               buffer_->updateBibfilesCache();
+               }
+               break;
+       }
+
+       case LFUN_BIBTEX_DATABASE_DEL: {
+               LCursor tmpcur = cursor_;
+               bv_funcs::findInset(tmpcur, InsetBase::BIBTEX_CODE, false);
+               InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
+                                               InsetBase::BIBTEX_CODE);
+               if (inset) {
+                       if (inset->delDatabase(to_utf8(cmd.argument())))
+                               buffer_->updateBibfilesCache();
+               }
+               break;
+       }
+
+       case LFUN_WORDS_COUNT: {
+               DocIterator from, to;
+               if (cur.selection()) {
+                       from = cur.selectionBegin();
+                       to = cur.selectionEnd();
+               } else {
+                       from = doc_iterator_begin(buffer_->inset());
+                       to = doc_iterator_end(buffer_->inset());
+               }
+               int const count = countWords(from, to);
+               docstring message;
+               if (count != 1) {
+                       if (cur.selection())
+                               message = bformat(_("%1$d words in selection."),
+                                         count);
+                               else
+                                       message = bformat(_("%1$d words in document."),
+                                                         count);
+               }
+               else {
+                       if (cur.selection())
+                               message = _("One word in selection.");
+                       else
+                               message = _("One word in document.");
+               }
+
+               Alert::information(_("Count words"), message);
+       }
+               break;
+
+       case LFUN_BUFFER_TOGGLE_COMPRESSION:
+               // turn compression on/off
+               buffer_->params().compressed = !buffer_->params().compressed;
+               break;
+
+       case LFUN_NEXT_INSET_TOGGLE: {
+               // this is the real function we want to invoke
+               FuncRequest tmpcmd = FuncRequest(LFUN_INSET_TOGGLE, cmd.origin);
+               // if there is an inset at cursor, see whether it
+               // wants to toggle.
+               InsetBase * inset = cur.nextInset();
+               if (inset && inset->isActive()) {
+                       LCursor tmpcur = cur;
+                       tmpcur.pushLeft(*inset);
+                       inset->dispatch(tmpcur, tmpcmd);
+                       if (tmpcur.result().dispatched()) {
+                               cur.dispatched();
+                       }
+               }
+               // if it did not work, try the underlying inset.
+               if (!cur.result().dispatched())
+                       cur.dispatch(tmpcmd);
+
+               if (cur.result().dispatched())
+                       cur.clearSelection();
+
+               break;
+       }
+
+       default:
+               return false;
+       }
+
+       return true;
 }
 
 
-bool BufferView::dispatch(FuncRequest const & ev)
+docstring const BufferView::requestSelection()
 {
-       return pimpl_->dispatch(ev);
+       if (!buffer_)
+               return docstring();
+
+       LCursor & cur = cursor_;
+
+       if (!cur.selection()) {
+               xsel_cache_.set = false;
+               return docstring();
+       }
+
+       if (!xsel_cache_.set ||
+           cur.top() != xsel_cache_.cursor ||
+           cur.anchor_.top() != xsel_cache_.anchor)
+       {
+               xsel_cache_.cursor = cur.top();
+               xsel_cache_.anchor = cur.anchor_.top();
+               xsel_cache_.set = cur.selection();
+               return cur.selectionAsString(false);
+       }
+       return docstring();
 }
 
 
-void BufferView::scroll(int lines)
+void BufferView::clearSelection()
 {
-       pimpl_->scroll(lines);
+       if (buffer_) {
+               cursor_.clearSelection();
+               xsel_cache_.set = false;
+       }
 }
 
 
-// Inserts a file into current document
-bool BufferView::insertLyXFile(string const & filen)
-       //
-       // Copyright CHT Software Service GmbH
-       // Uwe C. Schroeder
-       //
-       // Insert a LyXformat - file into current buffer
-       //
-       // Moved from lyx_cb.C (Lgb)
+void BufferView::workAreaResize(int width, int height)
 {
-       BOOST_ASSERT(!filen.empty());
+       bool const widthChange = width != width_;
+       bool const heightChange = height != height_;
 
-       string const fname = MakeAbsPath(filen);
+       // Update from work area
+       width_ = width;
+       height_ = height;
 
-       cursor().clearSelection();
-       text()->breakParagraph(cursor());
+       if (buffer_)
+               resize();
 
-       bool res = buffer()->readFile(fname, text()->cursorPar());
-       resize();
-       return res;
+       update();
 }
 
 
-void BufferView::showErrorList(string const & action) const
+std::pair<bool, bool> BufferView::workAreaDispatch(FuncRequest const & cmd0)
 {
-       if (getErrorList().size()) {
-               string const title = bformat(_("LyX: %1$s errors (%2$s)"),
-                       action, buffer()->fileName());
-               owner()->getDialogs().show("errorlist", title);
-               pimpl_->errorlist_.clear();
+       //lyxerr << BOOST_CURRENT_FUNCTION << "[ cmd0 " << cmd0 << "]" << endl;
+
+       // This is only called for mouse related events including
+       // LFUN_FILE_OPEN generated by drag-and-drop.
+       FuncRequest cmd = cmd0;
+
+       // E.g. Qt mouse press when no buffer
+       if (!buffer_)
+               return make_pair(false, false);
+
+       LCursor cur(*this);
+       cur.push(buffer_->inset());
+       cur.selection() = cursor_.selection();
+
+       // Either the inset under the cursor or the
+       // surrounding LyXText will handle this event.
+
+       // Build temporary cursor.
+       cmd.y = min(max(cmd.y, -1), height_);
+       InsetBase * inset = buffer_->text().editXY(cur, cmd.x, cmd.y);
+
+       //lyxerr << BOOST_CURRENT_FUNCTION
+       //       << " * hit inset at tip: " << inset << endl;
+       //lyxerr << BOOST_CURRENT_FUNCTION
+       //       << " * created temp cursor:" << cur << endl;
+
+       // Put anchor at the same position.
+       cur.resetAnchor();
+
+       // Try to dispatch to an non-editable inset near this position
+       // via the temp cursor. If the inset wishes to change the real
+       // cursor it has to do so explicitly by using
+       //  cur.bv().cursor() = cur;  (or similar)
+       if (inset) {
+               inset->dispatch(cur, cmd);
        }
+
+       // Now dispatch to the temporary cursor. If the real cursor should
+       // be modified, the inset's dispatch has to do so explicitly.
+       if (!cur.result().dispatched())
+               cur.dispatch(cmd);
+
+       // Redraw if requested and necessary.
+       if (cur.result().dispatched() && cur.result().update())
+               return update(cur.result().update());
+
+       // When the above and the inner function are fixed, we can do this:
+       return make_pair(false, false);
 }
 
 
-ErrorList const & BufferView::getErrorList() const
+void BufferView::scroll(int /*lines*/)
 {
-       return pimpl_->errorlist_;
+//     if (!buffer_)
+//             return;
+//
+//     LyXText const * t = &buffer_->text();
+//     int const line_height = defaultRowHeight();
+//
+//     // The new absolute coordinate
+//     int new_top_y = top_y() + lines * line_height;
+//
+//     // Restrict to a valid value
+//     new_top_y = std::min(t->height() - 4 * line_height, new_top_y);
+//     new_top_y = std::max(0, new_top_y);
+//
+//     scrollDocView(new_top_y);
+//
+//     // Update the scrollbar.
+//     workArea_->setScrollbarParams(t->height(), top_y(), defaultRowHeight());}
 }
 
 
@@ -295,29 +1102,22 @@ void BufferView::setCursorFromRow(int row)
        int tmpid = -1;
        int tmppos = -1;
 
-       buffer()->texrow().getIdFromRow(row, tmpid, tmppos);
+       buffer_->texrow().getIdFromRow(row, tmpid, tmppos);
 
        if (tmpid == -1)
-               text()->setCursor(cursor(), 0, 0);
+               buffer_->text().setCursor(cursor_, 0, 0);
        else
-               text()->setCursor(cursor(),
-                       text()->parOffset(buffer()->getParFromID(tmpid).pit()),
-                       tmppos);
+               buffer_->text().setCursor(cursor_, buffer_->getParFromID(tmpid).pit(), tmppos);
 }
 
 
-void BufferView::gotoLabel(string const & label)
+void BufferView::gotoLabel(docstring const & label)
 {
-       for (Buffer::inset_iterator it = buffer()->inset_iterator_begin();
-            it != buffer()->inset_iterator_end(); ++it) {
-               vector<string> labels;
-               it->getLabelList(*buffer(), labels);
-               if (find(labels.begin(),labels.end(),label) != labels.end()) {
-                       cursor().clearSelection();
-                       text()->setCursor(cursor(), 
-                               distance(text()->paragraphs().begin(), it.getPar()),
-                               it.getPos());
-                       cursor().resetAnchor();
+       for (InsetIterator it = inset_iterator_begin(buffer_->inset()); it; ++it) {
+               vector<docstring> labels;
+               it->getLabelList(*buffer_, labels);
+               if (std::find(labels.begin(), labels.end(), label) != labels.end()) {
+                       setCursor(it);
                        update();
                        return;
                }
@@ -325,118 +1125,279 @@ void BufferView::gotoLabel(string const & label)
 }
 
 
-void BufferView::hideCursor()
+LyXText * BufferView::getLyXText()
 {
-       screen().hideCursor();
+       LyXText * text = cursor_.innerText();
+       BOOST_ASSERT(text);
+       return text;
 }
 
 
-LyXText * BufferView::getLyXText() const
+LyXText const * BufferView::getLyXText() const
 {
-       LyXText * text = cursor().innerText();
+       LyXText const * text = cursor_.innerText();
        BOOST_ASSERT(text);
        return text;
 }
 
 
-Language const * BufferView::getParentLanguage(InsetOld * inset) const
+int BufferView::workHeight() const
 {
-       Paragraph const & par = ownerPar(*buffer(), inset);
-       return par.getFontSettings(buffer()->params(),
-                                  par.getPositionOfInset(inset)).language();
+       return height_;
 }
 
 
-void BufferView::haveSelection(bool sel)
+void BufferView::setCursor(DocIterator const & dit)
 {
-       pimpl_->workarea().haveSelection(sel);
+       size_t const n = dit.depth();
+       for (size_t i = 0; i < n; ++i)
+               dit[i].inset().edit(cursor_, true);
+
+       cursor_.setCursor(dit);
+       cursor_.selection() = false;
 }
 
 
-int BufferView::workHeight() const
+void BufferView::mouseSetCursor(LCursor & cur)
 {
-       return pimpl_->workarea().workHeight();
+       BOOST_ASSERT(&cur.bv() == this);
+
+       // Has the cursor just left the inset?
+       bool badcursor = false;
+       if (&cursor_.inset() != &cur.inset())
+               badcursor = cursor_.inset().notifyCursorLeaves(cursor_);
+
+       // do the dEPM magic if needed
+       // FIXME: move this to InsetText::notifyCursorLeaves?
+       if (!badcursor && cursor_.inTexted())
+               cursor_.text()->deleteEmptyParagraphMechanism(cur, cursor_);
+
+       cursor_ = cur;
+       cursor_.clearSelection();
+       cursor_.setTargetX();
+       finishUndo();
+
 }
 
 
-LyXText * BufferView::text() const
+void BufferView::putSelectionAt(DocIterator const & cur,
+                               int length, bool backwards)
 {
-       return buffer() ? &buffer()->text() : 0;
+       cursor_.clearSelection();
+
+       setCursor(cur);
+
+       if (length) {
+               if (backwards) {
+                       cursor_.pos() += length;
+                       cursor_.setSelection(cursor_, -length);
+               } else
+                       cursor_.setSelection(cursor_, length);
+       }
 }
 
 
-void BufferView::setCursor(ParIterator const & par, lyx::pos_type pos)
+LCursor & BufferView::cursor()
 {
-       LCursor & cur = cursor();
-       cur.reset();
-       cur.push(buffer()->inset());
-       ParIterator::PosHolder const & positions = par.positions();
-       int const last = par.size() - 1;
-       for (int i = 0; i < last; ++i)
-               (*positions[i].it)->inset->edit(cur, true);
-       cur.resetAnchor();
-       LyXText * text = par.text(*buffer());
-       text->setCursor(cur, text->parOffset(par.pit()), pos);
+       return cursor_;
 }
 
 
-/*
-if the fitCursor call refers to some point in never-explored-land, then we
-don't have y information in insets there, then we cannot even do an update
-to get it (because we need the y infomation for setting top_y first). So
-this is solved in putSelectionAt with:
+LCursor const & BufferView::cursor() const
+{
+       return cursor_;
+}
 
-- setting top_y to the y of the outerPar (that has good info)
-- calling update
-- calling cursor().updatePos()
-- then call fitCursor()
 
-Ab.
-*/
+pit_type BufferView::anchor_ref() const
+{
+       return anchor_ref_;
+}
+
 
-void BufferView::putSelectionAt(PosIterator const & cur,
-                     int length, bool backwards)
+ViewMetricsInfo const & BufferView::viewMetricsInfo()
 {
-       ParIterator par(cur);
+       return metrics_info_;
+}
 
-       cursor().clearSelection();
 
-       LyXText * text = par.text(*buffer());
-       setCursor(par, cur.pos());
-       
-       // hack for the chicken and egg problem
-       if (par.inset())
-               top_y(par.outerPar()->y);
-       update();
-       text->setCursor(cursor(), text->parOffset(cur.pit()), cur.pos());
-       cursor().updatePos();
+void BufferView::updateMetrics(bool singlepar)
+{
+       // Clear out the position cache in case of full screen redraw.
+       if (!singlepar)
+               coord_cache_.clear();
 
-       if (length) {
-               text->setSelectionRange(cursor(), length);
-               cursor().setSelection();
-               if (backwards) {
-#if 0
-                       swap(cursor().cursor_, cursor().anchor_);
-#else
-                       DocumentIterator it = cursor();
-                       cursor().setCursor(cursor().anchor_, false);
-                       cursor().anchor_ = it;
-#endif
+       LyXText & buftext = buffer_->text();
+       pit_type size = int(buftext.paragraphs().size());
+
+       if (anchor_ref_ > int(buftext.paragraphs().size() - 1)) {
+               anchor_ref_ = int(buftext.paragraphs().size() - 1);
+               offset_ref_ = 0;
+       }
+
+       pit_type const pit = anchor_ref_;
+       int pit1 = pit;
+       int pit2 = pit;
+       size_t const npit = buftext.paragraphs().size();
+
+       // Rebreak anchor paragraph. In Single Paragraph mode, rebreak only
+       // the (main text, not inset!) paragraph containing the cursor.
+       // (if this paragraph contains insets etc., rebreaking will
+       // recursively descend)
+       if (!singlepar || pit == cursor_.bottom().pit())
+               buftext.redoParagraph(*this, pit);
+       int y0 = buftext.getPar(pit).ascent() - offset_ref_;
+
+       // Redo paragraphs above anchor if necessary; again, in Single Par
+       // mode, only if we encounter the (main text) one having the cursor.
+       int y1 = y0;
+       while (y1 > 0 && pit1 > 0) {
+               y1 -= buftext.getPar(pit1).ascent();
+               --pit1;
+               if (!singlepar || pit1 == cursor_.bottom().pit())
+                       buftext.redoParagraph(*this, pit1);
+               y1 -= buftext.getPar(pit1).descent();
+       }
+
+
+       // Take care of ascent of first line
+       y1 -= buftext.getPar(pit1).ascent();
+
+       // Normalize anchor for next time
+       anchor_ref_ = pit1;
+       offset_ref_ = -y1;
+
+       // Grey at the beginning is ugly
+       if (pit1 == 0 && y1 > 0) {
+               y0 -= y1;
+               y1 = 0;
+               anchor_ref_ = 0;
+       }
+
+       // Redo paragraphs below the anchor if necessary. Single par mode:
+       // only the one containing the cursor if encountered.
+       int y2 = y0;
+       while (y2 < height_ && pit2 < int(npit) - 1) {
+               y2 += buftext.getPar(pit2).descent();
+               ++pit2;
+               if (!singlepar || pit2 == cursor_.bottom().pit())
+                       buftext.redoParagraph(*this, pit2);
+               y2 += buftext.getPar(pit2).ascent();
+       }
+
+       // Take care of descent of last line
+       y2 += buftext.getPar(pit2).descent();
+
+       // The coordinates of all these paragraphs are correct, cache them
+       int y = y1;
+       CoordCache::InnerParPosCache & parPos = coord_cache_.parPos()[&buftext];
+       for (pit_type pit = pit1; pit <= pit2; ++pit) {
+               Paragraph const & par = buftext.getPar(pit);
+               y += par.ascent();
+               parPos[pit] = Point(0, y);
+               if (singlepar && pit == cursor_.bottom().pit()) {
+                       // In Single Paragraph mode, collect here the
+                       // y1 and y2 of the (one) paragraph the cursor is in
+                       y1 = y - par.ascent();
+                       y2 = y + par.descent();
                }
+               y += par.descent();
        }
 
-       fitCursor();
-       update();
+       if (singlepar) {
+               // collect cursor paragraph iter bounds
+               pit1 = cursor_.bottom().pit();
+               pit2 = cursor_.bottom().pit();
+       }
+
+       lyxerr[Debug::DEBUG]
+               << BOOST_CURRENT_FUNCTION
+               << " y1: " << y1
+               << " y2: " << y2
+               << " pit1: " << pit1
+               << " pit2: " << pit2
+               << " npit: " << npit
+               << " singlepar: " << singlepar
+               << "size: " << size
+               << endl;
+
+       metrics_info_ = ViewMetricsInfo(pit1, pit2, y1, y2, singlepar, size);
+
+       if (lyxerr.debugging(Debug::WORKAREA)) {
+               lyxerr[Debug::WORKAREA] << "BufferView::updateMetrics" << endl;
+               coord_cache_.dump();
+       }
 }
 
 
-LCursor & BufferView::cursor()
+void BufferView::menuInsertLyXFile(string const & filenm)
 {
-       return pimpl_->cursor_;
-}
+       BOOST_ASSERT(cursor_.inTexted());
+       string filename = filenm;
+
+       if (filename.empty()) {
+               // Launch a file browser
+               // FIXME UNICODE
+               string initpath = lyxrc.document_path;
+
+               if (buffer_) {
+                       string const trypath = buffer_->filePath();
+                       // If directory is writeable, use this as default.
+                       if (isDirWriteable(trypath))
+                               initpath = trypath;
+               }
 
+               // FIXME UNICODE
+               FileDialog fileDlg(_("Select LyX document to insert"),
+                       LFUN_FILE_INSERT,
+                       make_pair(_("Documents|#o#O"), from_utf8(lyxrc.document_path)),
+                       make_pair(_("Examples|#E#e"), from_utf8(addPath(package().system_support(), "examples"))));
 
-LCursor const & BufferView::cursor() const
-{
-       return pimpl_->cursor_;
+               FileDialog::Result result =
+                       fileDlg.open(from_utf8(initpath),
+                                    FileFilterList(_("LyX Documents (*.lyx)")),
+                                    docstring());
+
+               if (result.first == FileDialog::Later)
+                       return;
+
+               // FIXME UNICODE
+               filename = to_utf8(result.second);
+
+               // check selected filename
+               if (filename.empty()) {
+                       // emit message signal.
+                       message(_("Canceled."));
+                       return;
+               }
+       }
+
+       // Get absolute path of file and add ".lyx"
+       // to the filename if necessary
+       filename = fileSearch(string(), filename, "lyx");
+
+       docstring const disp_fn = makeDisplayPath(filename);
+       // emit message signal.
+       message(bformat(_("Inserting document %1$s..."), disp_fn));
+
+       docstring res;
+       Buffer buf("", false);
+       if (lyx::loadLyXFile(&buf, makeAbsPath(filename))) {
+               ErrorList & el = buffer_->errorList("Parse");
+               // Copy the inserted document error list into the current buffer one.
+               el = buf.errorList("Parse");
+               recordUndo(cursor_);
+               cap::pasteParagraphList(cursor_, buf.paragraphs(),
+                                            buf.params().textclass, el);
+               res = _("Document %1$s inserted.");
+       } else
+               res = _("Could not insert document %1$s");
+
+       // emit message signal.
+       message(bformat(res, disp_fn));
+       buffer_->errors("Parse");
+       resize();
 }
+
+
+} // namespace lyx