]> git.lyx.org Git - lyx.git/blobdiff - src/BufferView.cpp
Embedding: simplify the interface of EmbeddedFiles, which will be later merged to...
[lyx.git] / src / BufferView.cpp
index 77c53e507a8334ba81e899f5a2529d899a77a742..c93966b2572a838ba79ea99d6626935ccb4e0614 100644 (file)
 #include "buffer_funcs.h"
 #include "BufferList.h"
 #include "BufferParams.h"
-#include "bufferview_funcs.h"
-#include "callback.h" // added for Dispatch functions
 #include "CoordCache.h"
+#include "Cursor.h"
 #include "CutAndPaste.h"
-#include "debug.h"
 #include "DispatchResult.h"
+#include "EmbeddedFiles.h"
 #include "ErrorList.h"
 #include "factory.h"
 #include "FloatList.h"
 #include "FuncRequest.h"
 #include "FuncStatus.h"
-#include "gettext.h"
 #include "Intl.h"
 #include "InsetIterator.h"
 #include "Language.h"
 #include "ParagraphParameters.h"
 #include "ParIterator.h"
 #include "Session.h"
-#include "TexRow.h"
 #include "Text.h"
 #include "TextClass.h"
-#include "toc.h"
-#include "Undo.h"
+#include "TextMetrics.h"
+#include "TexRow.h"
 #include "VSpace.h"
 #include "WordLangTuple.h"
 
@@ -61,7 +58,8 @@
 #include "insets/InsetText.h"
 
 #include "frontends/alert.h"
-#include "frontends/FileDialog.h"
+#include "frontends/Application.h"
+#include "frontends/Delegates.h"
 #include "frontends/FontMetrics.h"
 #include "frontends/Painter.h"
 #include "frontends/Selection.h"
 #include "graphics/Previews.h"
 
 #include "support/convert.h"
+#include "support/debug.h"
+#include "support/ExceptionMessage.h"
 #include "support/FileFilterList.h"
 #include "support/filetools.h"
+#include "support/gettext.h"
+#include "support/lstrings.h"
 #include "support/Package.h"
 #include "support/types.h"
 
-#include <boost/bind.hpp>
-#include <boost/current_function.hpp>
-
+#include <cerrno>
+#include <fstream>
 #include <functional>
+#include <iterator>
 #include <vector>
 
-using std::distance;
-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::vector;
-
+using namespace std;
+using namespace lyx::support;
 
 namespace lyx {
 
-using support::addPath;
-using support::bformat;
-using support::FileFilterList;
-using support::FileName;
-using support::fileSearch;
-using support::isDirWriteable;
-using support::isFileReadable;
-using support::makeDisplayPath;
-using support::package;
-
 namespace Alert = frontend::Alert;
 
 namespace {
 
 /// Return an inset of this class if it exists at the current cursor position
 template <class T>
-T * getInsetByCode(Cursor const & cur, Inset::Code code)
+T * getInsetByCode(Cursor const & cur, InsetCode code)
 {
        DocIterator it = cur;
        Inset * inset = it.nextInset();
@@ -119,11 +103,11 @@ T * getInsetByCode(Cursor const & cur, Inset::Code code)
 }
 
 
-bool findInset(DocIterator & dit, vector<Inset_code> const & codes,
+bool findInset(DocIterator & dit, vector<InsetCode> const & codes,
        bool same_content);
 
-bool findNextInset(DocIterator & dit, vector<Inset_code> const & codes,
-       string const & contents)
+bool findNextInset(DocIterator & dit, vector<InsetCode> const & codes,
+       docstring const & contents)
 {
        DocIterator tmpdit = dit;
 
@@ -132,7 +116,7 @@ bool findNextInset(DocIterator & dit, vector<Inset_code> const & codes,
                if (inset
                    && find(codes.begin(), codes.end(), inset->lyxCode()) != codes.end()
                    && (contents.empty() ||
-                   static_cast<InsetCommand const *>(inset)->getContents() == contents)) {
+                   static_cast<InsetCommand const *>(inset)->getFirstNonOptParam() == contents)) {
                        dit = tmpdit;
                        return true;
                }
@@ -143,11 +127,11 @@ bool findNextInset(DocIterator & dit, vector<Inset_code> const & codes,
 }
 
 
-/// Looks for next inset with one of the the given code
-bool findInset(DocIterator & dit, vector<Inset_code> const & codes,
+/// Looks for next inset with one of the given codes.
+bool findInset(DocIterator & dit, vector<InsetCode> const & codes,
        bool same_content)
 {
-       string contents;
+       docstring contents;
        DocIterator tmpdit = dit;
        tmpdit.forwardInset();
        if (!tmpdit)
@@ -157,7 +141,7 @@ bool findInset(DocIterator & dit, vector<Inset_code> const & codes,
                Inset const * inset = tmpdit.nextInset();
                if (inset
                    && find(codes.begin(), codes.end(), inset->lyxCode()) != codes.end()) {
-                       contents = static_cast<InsetCommand const *>(inset)->getContents();
+                       contents = static_cast<InsetCommand const *>(inset)->getFirstNonOptParam();
                }
        }
 
@@ -176,14 +160,14 @@ bool findInset(DocIterator & dit, vector<Inset_code> const & codes,
 
 
 /// Looks for next inset with the given code
-void findInset(DocIterator & dit, Inset_code code, bool same_content)
+void findInset(DocIterator & dit, InsetCode code, bool same_content)
 {
-       findInset(dit, vector<Inset_code>(1, code), same_content);
+       findInset(dit, vector<InsetCode>(1, code), same_content);
 }
 
 
 /// Moves cursor to the next inset with one of the given codes.
-void gotoInset(BufferView * bv, vector<Inset_code> const & codes,
+void gotoInset(BufferView * bv, vector<InsetCode> const & codes,
               bool same_content)
 {
        Cursor tmpcur = bv->cursor();
@@ -194,31 +178,94 @@ void gotoInset(BufferView * bv, vector<Inset_code> const & codes,
 
        tmpcur.clearSelection();
        bv->setCursor(tmpcur);
+       bv->showCursor();
 }
 
 
 /// Moves cursor to the next inset with given code.
-void gotoInset(BufferView * bv, Inset_code code, bool same_content)
+void gotoInset(BufferView * bv, InsetCode code, bool same_content)
 {
-       gotoInset(bv, vector<Inset_code>(1, code), same_content);
+       gotoInset(bv, vector<InsetCode>(1, code), same_content);
 }
 
 
+/// A map from a Text to the associated text metrics
+typedef map<Text const *, TextMetrics> TextMetricsCache;
+
+enum ScreenUpdateStrategy {
+       NoScreenUpdate,
+       SingleParUpdate,
+       FullScreenUpdate,
+       DecorationUpdate
+};
+
 } // anon namespace
 
 
+/////////////////////////////////////////////////////////////////////
+//
+// BufferView
+//
+/////////////////////////////////////////////////////////////////////
+
+struct BufferView::Private
+{
+       Private(BufferView & bv): wh_(0), cursor_(bv),
+               anchor_pit_(0), anchor_ypos_(0),
+               last_inset_(0), gui_(0)
+       {}
+
+       ///
+       ScrollbarParameters scrollbarParameters_;
+       ///
+       ScreenUpdateStrategy update_strategy_;
+       ///
+       CoordCache coord_cache_;
+
+       /// Estimated average par height for scrollbar.
+       int wh_;
+       /// this is used to handle XSelection events in the right manner.
+       struct {
+               CursorSlice cursor;
+               CursorSlice anchor;
+               bool set;
+       } xsel_cache_;
+       ///
+       Cursor cursor_;
+       ///
+       pit_type anchor_pit_;
+       ///
+       int anchor_ypos_;
+       ///
+       vector<int> par_height_;
+
+       /// keyboard mapping object.
+       Intl intl_;
+
+       /// last visited inset.
+       /** kept to send setMouseHover(false).
+         * Not owned, so don't delete.
+         */
+       Inset * last_inset_;
+
+       mutable TextMetricsCache text_metrics_;
+
+       /// Whom to notify.
+       /** Not owned, so don't delete.
+         */
+       frontend::GuiBufferViewDelegate * gui_;
+};
+
+
 BufferView::BufferView(Buffer & buf)
-       : width_(0), height_(0), buffer_(buf), wh_(0),
-         cursor_(*this),
-         multiparsel_cache_(false), anchor_ref_(0), offset_ref_(0),
-         need_centering_(false), intl_(new Intl), last_inset_(0)
+       : width_(0), height_(0), buffer_(buf), d(new Private(*this))
 {
-       xsel_cache_.set = false;
-       intl_->initKeyMapper(lyxrc.use_kbmap);
+       d->xsel_cache_.set = false;
+       d->intl_.initKeyMapper(lyxrc.use_kbmap);
 
-       cursor_.push(buffer_.inset());
-       cursor_.resetAnchor();
-       cursor_.setCurrentFont();
+       d->cursor_.push(buffer_.inset());
+       d->cursor_.resetAnchor();
+       d->cursor_.setCurrentFont();
 
        if (graphics::Previews::status() != LyXRC::PREVIEW_OFF)
                graphics::Previews::get().generateBufferPreviews(buffer_);
@@ -232,9 +279,36 @@ BufferView::~BufferView()
        // currently can only handle bottom (whole document) level pit and pos.
        // That is to say, if a cursor is in a nested inset, it will be
        // restore to the left of the top level inset.
-       LyX::ref().session().lastFilePos().save(
-               support::FileName(buffer_.fileName()),
-               boost::tie(cursor_.bottom().pit(), cursor_.bottom().pos()) );
+       LastFilePosSection::FilePos fp;
+       fp.pit = d->cursor_.bottom().pit();
+       fp.pos = d->cursor_.bottom().pos();
+       LyX::ref().session().lastFilePos().save(buffer_.fileName(), fp);
+
+       delete d;
+}
+
+
+Intl & BufferView::getIntl()
+{
+       return d->intl_;
+}
+
+
+Intl const & BufferView::getIntl() const
+{
+       return d->intl_;
+}
+
+
+CoordCache & BufferView::coordCache()
+{
+       return d->coord_cache_;
+}
+
+
+CoordCache const & BufferView::coordCache() const
+{
+       return d->coord_cache_;
 }
 
 
@@ -252,48 +326,33 @@ Buffer const & BufferView::buffer() const
 
 bool BufferView::fitCursor()
 {
-       if (bv_funcs::status(this, cursor_) == bv_funcs::CUR_INSIDE) {
+       if (cursorStatus(d->cursor_) == CUR_INSIDE) {
                frontend::FontMetrics const & fm =
-                       theFontMetrics(cursor_.getFont());
+                       theFontMetrics(d->cursor_.getFont().fontInfo());
                int const asc = fm.maxAscent();
                int const des = fm.maxDescent();
-               Point const p = bv_funcs::getPos(*this, cursor_, cursor_.boundary());
+               Point const p = getPos(d->cursor_, d->cursor_.boundary());
                if (p.y_ - asc >= 0 && p.y_ + des < height_)
                        return false;
        }
-       center();
        return true;
 }
 
 
-bool BufferView::multiParSel()
-{
-       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_;
-}
-
-
-bool BufferView::update(Update::flags flags)
+void BufferView::processUpdateFlags(Update::flags flags)
 {
        // last_inset_ points to the last visited inset. This pointer may become
        // invalid because of keyboard editing. Since all such operations
        // causes screen update(), I reset last_inset_ to avoid such a problem.
-       last_inset_ = 0;
+       d->last_inset_ = 0;
        // This is close to a hot-path.
-       LYXERR(Debug::DEBUG)
-               << BOOST_CURRENT_FUNCTION
+       LYXERR(Debug::DEBUG, "BufferView::processUpdateFlags()"
                << "[fitcursor = " << (flags & Update::FitCursor)
                << ", forceupdate = " << (flags & Update::Force)
                << ", singlepar = " << (flags & Update::SinglePar)
-               << "]  buffer: " << &buffer_ << endl;
+               << "]  buffer: " << &buffer_);
 
-       // Update macro store
-       if (!(cursor().inMathed() && cursor().inMacroMode()))
-               buffer_.buildMacros();
+       buffer_.updateMacros();
 
        // Now do the first drawing step if needed. This consists on updating
        // the CoordCache in updateMetrics().
@@ -302,169 +361,204 @@ bool BufferView::update(Update::flags flags)
        // Case when no explicit update is requested.
        if (!flags) {
                // no need to redraw anything.
-               metrics_info_.update_strategy = NoScreenUpdate;
-               return false;
+               d->update_strategy_ = NoScreenUpdate;
+               return;
        }
 
        if (flags == Update::Decoration) {
-               metrics_info_.update_strategy = DecorationUpdate;
-               return true;
+               d->update_strategy_ = DecorationUpdate;
+               buffer_.changed();
+               return;
        }
 
        if (flags == Update::FitCursor
                || flags == (Update::Decoration | Update::FitCursor)) {
-               bool const fit_cursor = fitCursor();
                // tell the frontend to update the screen if needed.
-               if (fit_cursor) {
-                       updateMetrics(false);
-                       return true;
+               if (fitCursor()) {
+                       showCursor();
+                       return;
                }
                if (flags & Update::Decoration) {
-                       metrics_info_.update_strategy = DecorationUpdate;
-                       return true;
+                       d->update_strategy_ = DecorationUpdate;
+                       buffer_.changed();
+                       return;
                }
                // no screen update is needed.
-               metrics_info_.update_strategy = NoScreenUpdate;
-               return false;
+               d->update_strategy_ = NoScreenUpdate;
+               return;
        }
 
-       bool full_metrics = flags & Update::Force;
-       if (flags & Update::MultiParSel)
-               full_metrics |= multiParSel();
+       bool const full_metrics = flags & Update::Force || !singleParUpdate();
 
-       bool const single_par = !full_metrics;
-       updateMetrics(single_par);
+       if (full_metrics)
+               // We have to update the full screen metrics.
+               updateMetrics();
 
-       if (flags & Update::FitCursor) {
-               //FIXME: updateMetrics() does not update paragraph position
-               // This is done at draw() time. So we need a redraw!
+       if (!(flags & Update::FitCursor)) {
+               // Nothing to do anymore. Trigger a redraw and return
                buffer_.changed();
-               if (fitCursor())
-                       updateMetrics(false);
-               else
-                       // The screen has already been updated thanks to the
-                       // 'buffer_.changed()' call three line above. So no need
-                       // to redraw again.
-                       return false;
+               return;
        }
 
-       // tell the frontend to update the screen.
-       return true;
+       // updateMetrics() does not update paragraph position
+       // This is done at draw() time. So we need a redraw!
+       buffer_.changed();
+
+       if (fitCursor()) {
+               // The cursor is off screen so ensure it is visible.
+               // refresh it:
+               showCursor();
+       }
 }
 
 
 void BufferView::updateScrollbar()
 {
-       Text & t = buffer_.text();
-       TextMetrics & tm = text_metrics_[&t];
+       if (height_ == 0)
+               return;
 
-       int const parsize = int(t.paragraphs().size() - 1);
-       if (anchor_ref_ >  parsize)  {
-               anchor_ref_ = parsize;
-               offset_ref_ = 0;
+       Text & t = buffer_.text();
+       TextMetrics & tm = d->text_metrics_[&t];                
+
+       LYXERR(Debug::GUI, " Updating scrollbar: height: "
+               << t.paragraphs().size()
+               << " curr par: " << d->cursor_.bottom().pit()
+               << " default height " << defaultRowHeight());
+
+       int const parsize = int(t.paragraphs().size());
+       if (d->par_height_.size() != parsize) {
+               d->par_height_.clear();
+               // FIXME: We assume a default paragraph height of 2 rows. This
+               // should probably be pondered with the screen width.
+               d->par_height_.resize(parsize, defaultRowHeight() * 2);
        }
 
-       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 = tm.parMetrics(anchor_ref_).height();
-
-       // Normalize anchor/offset (MV):
-       while (offset_ref_ > h && anchor_ref_ < parsize) {
-               anchor_ref_++;
-               offset_ref_ -= h;
-               h = tm.parMetrics(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 = tm.parMetrics(pit).height();
-               sumh += h2;
-               nh++;
+       pit_type first_visible_pit = -1;
+       pair<pit_type, ParagraphMetrics const *> first = tm.first();
+       pair<pit_type, ParagraphMetrics const *> last = tm.last();
+       for (pit_type pit = first.first; pit <= last.first; ++pit) {
+               ParagraphMetrics const & pm = tm.parMetrics(pit);
+               d->par_height_[pit] = pm.height();
+               if (first_visible_pit >= 0 || pm.position() + pm.descent() <= 0)
+                       continue;
+               first_visible_pit = pit;
+               LYXERR(Debug::SCROLLING, "first visible pit " << first_visible_pit);
+               // FIXME: we should look for the first visible row within
+               // the deepest inset!
+               int row_pos = pm.position();
+               size_t const nrows = pm.rows().size();
+               for (size_t i = 0; i != nrows; ++i) {
+                       Row const & row = pm.rows()[i];
+                       if (row_pos >= 0) {
+                               LYXERR(Debug::SCROLLING, "first visible row " << i
+                                       << "(row pos = " << row_pos << ");");
+                               break;
+                       }
+                       row_pos += row.height();
+               }
+               d->scrollbarParameters_.position = row_pos;
        }
 
-       BOOST_ASSERT(nh);
-       int const hav = sumh / nh;
-       // More realistic average paragraph height
-       if (hav > wh_)
-               wh_ = hav;
+       d->scrollbarParameters_.height = 0;
+       for (size_t i = 0; i != d->par_height_.size(); ++i) {
+               if (i == first_visible_pit)
+                       d->scrollbarParameters_.position += d->scrollbarParameters_.height;
+               d->scrollbarParameters_.height += d->par_height_[i];
+       }
 
-       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));
+       // We prefer fixed size line scrolling.
+       d->scrollbarParameters_.lineScrollHeight = defaultRowHeight();
 }
 
 
 ScrollbarParameters const & BufferView::scrollbarParameters() const
 {
-       return scrollbarParameters_;
+       return d->scrollbarParameters_;
 }
 
 
-void BufferView::scrollDocView(int value)
+docstring BufferView::toolTip(int x, int y) const
 {
-       LYXERR(Debug::GUI) << BOOST_CURRENT_FUNCTION
-                          << "[ value = " << value << "]" << endl;
+       // Get inset under mouse, if there is one.
+       Inset const * covering_inset = getCoveringInset(buffer_.text(), x, y);
+       if (!covering_inset)
+               // No inset, no tooltip...
+               return docstring();
+       return covering_inset->toolTip(*this, x, y);
+}
 
-       Text & t = buffer_.text();
-       TextMetrics & tm = text_metrics_[&t];
 
-       float const bar = value / float(wh_ * t.paragraphs().size());
+docstring BufferView::contextMenu(int x, int y) const
+{
+       // Get inset under mouse, if there is one.
+       Inset const * covering_inset = getCoveringInset(buffer_.text(), x, y);
+       if (covering_inset)
+               return covering_inset->contextMenu(*this, x, y);
+
+       // FIXME: Do something more elaborate here.
+       return from_ascii("edit");
+}
 
-       anchor_ref_ = int(bar * t.paragraphs().size());
-       if (anchor_ref_ >  int(t.paragraphs().size()) - 1)
-               anchor_ref_ = int(t.paragraphs().size()) - 1;
 
-       tm.redoParagraph(anchor_ref_);
-       int const h = tm.parMetrics(anchor_ref_).height();
-       offset_ref_ = int((bar * t.paragraphs().size() - anchor_ref_) * h);
-       updateMetrics(false);
+void BufferView::scrollDocView(int value)
+{
+       int const offset = value - d->scrollbarParameters_.position;
+       // If the offset is less than 2 screen height, prefer to scroll instead.
+       if (abs(offset) <= 2 * height_) {
+               scroll(offset);
+               return;
+       }
+
+       int par_pos = 0;
+       for (size_t i = 0; i != d->par_height_.size(); ++i) {
+               par_pos += d->par_height_[i];
+               if (par_pos >= value) {
+                       d->anchor_pit_ = pit_type(i);
+                       break;
+               }
+       }
+
+       LYXERR(Debug::SCROLLING, "value = " << value
+               << "\tanchor_ref_ = " << d->anchor_pit_
+               << "\tpar_pos = " << par_pos);
+
+       d->anchor_ypos_ = par_pos - value;
+       updateMetrics();
        buffer_.changed();
 }
 
 
+// FIXME: this method is not working well.
 void BufferView::setCursorFromScrollbar()
 {
-       TextMetrics & tm = text_metrics_[&buffer_.text()];
+       TextMetrics & tm = d->text_metrics_[&buffer_.text()];
 
        int const height = 2 * defaultRowHeight();
        int const first = height;
        int const last = height_ - height;
-       Cursor & cur = cursor_;
+       Cursor & cur = d->cursor_;
 
-       bv_funcs::CurStatus st = bv_funcs::status(this, cur);
-
-       switch (st) {
-       case bv_funcs::CUR_ABOVE:
-               // We reset the cursor because bv_funcs::status() does not
+       switch (cursorStatus(cur)) {
+       case CUR_ABOVE:
+               // We reset the cursor because cursorStatus() does not
                // work when the cursor is within mathed.
                cur.reset(buffer_.inset());
                tm.setCursorFromCoordinates(cur, 0, first);
                cur.clearSelection();
                break;
-       case bv_funcs::CUR_BELOW:
-               // We reset the cursor because bv_funcs::status() does not
+       case CUR_BELOW:
+               // We reset the cursor because cursorStatus() does not
                // work when the cursor is within mathed.
                cur.reset(buffer_.inset());
                tm.setCursorFromCoordinates(cur, 0, last);
                cur.clearSelection();
                break;
-       case bv_funcs::CUR_INSIDE:
-               int const y = bv_funcs::getPos(*this, cur, cur.boundary()).y_;
+       case CUR_INSIDE:
+               int const y = getPos(cur, cur.boundary()).y_;
                int const newy = min(last, max(y, first));
                if (y != newy) {
                        cur.reset(buffer_.inset());
@@ -476,14 +570,27 @@ void BufferView::setCursorFromScrollbar()
 
 Change const BufferView::getCurrentChange() const
 {
-       if (!cursor_.selection())
+       if (!d->cursor_.selection())
                return Change(Change::UNCHANGED);
 
-       DocIterator dit = cursor_.selectionBegin();
+       DocIterator dit = d->cursor_.selectionBegin();
        return dit.paragraph().lookupChange(dit.pos());
 }
 
 
+// this could be used elsewhere as well?
+// FIXME: This does not work within mathed!
+CursorStatus BufferView::cursorStatus(DocIterator const & dit) const
+{
+       Point const p = getPos(dit, dit.boundary());
+       if (p.y_ < 0)
+               return CUR_ABOVE;
+       if (p.y_ > workHeight())
+               return CUR_BELOW;
+       return CUR_INSIDE;
+}
+
+
 void BufferView::saveBookmark(unsigned int idx)
 {
        // tenatively save bookmark, id and pos will be used to
@@ -491,11 +598,11 @@ void BufferView::saveBookmark(unsigned int idx)
        // pit and pos will be updated with bottom level pit/pos
        // when lyx exits.
        LyX::ref().session().bookmarks().save(
-               FileName(buffer_.fileName()),
-               cursor_.bottom().pit(),
-               cursor_.bottom().pos(),
-               cursor_.paragraph().id(),
-               cursor_.pos(),
+               buffer_.fileName(),
+               d->cursor_.bottom().pit(),
+               d->cursor_.bottom().pos(),
+               d->cursor_.paragraph().id(),
+               d->cursor_.pos(),
                idx
        );
        if (idx)
@@ -510,7 +617,7 @@ bool BufferView::moveToPosition(pit_type bottom_pit, pos_type bottom_pos,
        bool success = false;
        DocIterator doc_it;
 
-       cursor_.clearSelection();
+       d->cursor_.clearSelection();
 
        // if a valid par_id is given, try it first
        // This is the case for a 'live' bookmark when unique paragraph ID
@@ -552,9 +659,13 @@ bool BufferView::moveToPosition(pit_type bottom_pit, pos_type bottom_pos,
                // Note: only bottom (document) level pit is set.
                setCursor(doc_it);
                // set the current font.
-               cursor_.setCurrentFont();
-               // center the screen on this new position.
-               center();
+               d->cursor_.setCurrentFont();
+               // To center the screen on this new position we need the
+               // paragraph position which is computed at draw() time.
+               // So we need a redraw!
+               buffer_.changed();
+               if (fitCursor())
+                       showCursor();
        }
 
        return success;
@@ -564,16 +675,16 @@ bool BufferView::moveToPosition(pit_type bottom_pit, pos_type bottom_pos,
 void BufferView::translateAndInsert(char_type c, Text * t, Cursor & cur)
 {
        if (lyxrc.rtl_support) {
-               if (cursor_.real_current_font.isRightToLeft()) {
-                       if (intl_->keymap == Intl::PRIMARY)
-                               intl_->keyMapSec();
+               if (d->cursor_.real_current_font.isRightToLeft()) {
+                       if (d->intl_.keymap == Intl::PRIMARY)
+                               d->intl_.keyMapSec();
                } else {
-                       if (intl_->keymap == Intl::SECONDARY)
-                               intl_->keyMapPrim();
+                       if (d->intl_.keymap == Intl::SECONDARY)
+                               d->intl_.keyMapPrim();
                }
        }
 
-       intl_->getTransManager().translateAndInsert(c, t, cur);
+       d->intl_.getTransManager().translateAndInsert(c, t, cur);
 }
 
 
@@ -583,31 +694,61 @@ int BufferView::workWidth() const
 }
 
 
-void BufferView::updateOffsetRef()
+void BufferView::showCursor()
 {
-       // No need to update offset_ref_ in this case.
-       if (!need_centering_)
-               return;
-
        // We are not properly started yet, delay until resizing is
        // done.
        if (height_ == 0)
                return;
 
-       CursorSlice & bot = cursor_.bottom();
-       TextMetrics & tm = text_metrics_[bot.text()];
-       ParagraphMetrics const & pm = tm.parMetrics(bot.pit());
-       Point p = bv_funcs::coordOffset(*this, cursor_, cursor_.boundary());
-       offset_ref_ = p.y_ + pm.ascent() - height_ / 2;
+       LYXERR(Debug::SCROLLING, "recentering!");
 
-       need_centering_ = false;
-}
+       CursorSlice & bot = d->cursor_.bottom();
+       TextMetrics & tm = d->text_metrics_[bot.text()];
 
+       pos_type const max_pit = pos_type(bot.text()->paragraphs().size() - 1);
+       int bot_pit = d->cursor_.bottom().pit();
+       if (bot_pit > max_pit) {
+               // FIXME: Why does this happen?
+               LYXERR0("bottom pit is greater that max pit: "
+                       << bot_pit << " > " << max_pit);
+               bot_pit = max_pit;
+       }
 
-void BufferView::center()
-{
-       anchor_ref_ = cursor_.bottom().pit();
-       need_centering_ = true;
+       if (bot_pit == tm.first().first - 1)
+               tm.newParMetricsUp();
+       else if (bot_pit == tm.last().first + 1)
+               tm.newParMetricsDown();
+
+       if (tm.has(bot_pit)) {
+               ParagraphMetrics const & pm = tm.parMetrics(bot_pit);
+               int offset = coordOffset(d->cursor_, d->cursor_.boundary()).y_;
+               int ypos = pm.position() + offset;
+               Dimension const & row_dim = d->cursor_.textRow().dimension();
+               if (ypos - row_dim.ascent() < 0)
+                       scrollUp(- ypos + row_dim.ascent());
+               else if (ypos + row_dim.descent() > height_)
+                       scrollDown(ypos - height_ + row_dim.descent());
+               // else, nothing to do, the cursor is already visible so we just return.
+               return;
+       }
+
+       tm.redoParagraph(bot_pit);
+       ParagraphMetrics const & pm = tm.parMetrics(bot_pit);
+       int offset = coordOffset(d->cursor_, d->cursor_.boundary()).y_;
+
+       d->anchor_pit_ = bot_pit;
+       Dimension const & row_dim = d->cursor_.textRow().dimension();
+
+       if (d->anchor_pit_ == 0)
+               d->anchor_ypos_ = offset + pm.ascent();
+       else if (d->anchor_pit_ == max_pit)
+               d->anchor_ypos_ = height_ - offset - row_dim.descent();
+       else
+               d->anchor_ypos_ = defaultRowHeight() * 2 - offset - row_dim.descent();
+
+       updateMetrics();
+       buffer_.changed();
 }
 
 
@@ -615,15 +756,15 @@ FuncStatus BufferView::getStatus(FuncRequest const & cmd)
 {
        FuncStatus flag;
 
-       Cursor & cur = cursor_;
+       Cursor & cur = d->cursor_;
 
        switch (cmd.action) {
 
        case LFUN_UNDO:
-               flag.enabled(!buffer_.undostack().empty());
+               flag.enabled(buffer_.undo().hasUndoStack());
                break;
        case LFUN_REDO:
-               flag.enabled(!buffer_.redostack().empty());
+               flag.enabled(buffer_.undo().hasRedoStack());
                break;
        case LFUN_FILE_INSERT:
        case LFUN_FILE_INSERT_PLAINTEXT_PARA:
@@ -634,12 +775,8 @@ FuncStatus BufferView::getStatus(FuncRequest const & cmd)
                break;
        case LFUN_FONT_STATE:
        case LFUN_LABEL_INSERT:
+       case LFUN_INFO_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:
@@ -650,14 +787,14 @@ FuncStatus BufferView::getStatus(FuncRequest const & cmd)
        case LFUN_SCREEN_RECENTER:
        case LFUN_BIBTEX_DATABASE_ADD:
        case LFUN_BIBTEX_DATABASE_DEL:
-       case LFUN_WORDS_COUNT:
+       case LFUN_STATISTICS:
        case LFUN_NEXT_INSET_TOGGLE:
                flag.enabled(true);
                break;
 
        case LFUN_LABEL_GOTO: {
                flag.enabled(!cmd.argument().empty()
-                   || getInsetByCode<InsetRef>(cur, Inset::REF_CODE));
+                   || getInsetByCode<InsetRef>(cur, REF_CODE));
                break;
        }
 
@@ -686,9 +823,15 @@ FuncStatus BufferView::getStatus(FuncRequest const & cmd)
                flag.setOnOff(buffer_.params().compressed);
                break;
        }
+       
+       case LFUN_BUFFER_TOGGLE_EMBEDDING: {
+               flag.setOnOff(buffer_.params().embedded);
+               break;
+       }
 
        case LFUN_SCREEN_UP:
        case LFUN_SCREEN_DOWN:
+       case LFUN_SCROLL:
                flag.enabled(true);
                break;
 
@@ -699,6 +842,60 @@ FuncStatus BufferView::getStatus(FuncRequest const & cmd)
                flag.enabled(false);
                break;
 
+       case LFUN_LAYOUT_TABULAR:
+               flag.enabled(cur.innerInsetOfType(TABULAR_CODE));
+               break;
+
+       case LFUN_LAYOUT:
+       case LFUN_LAYOUT_PARAGRAPH:
+               flag.enabled(cur.inset().forceDefaultParagraphs(cur.idx()));
+               break;
+
+       case LFUN_INSET_SETTINGS: {
+               InsetCode code = cur.inset().lyxCode();
+               bool enable = false;
+               switch (code) {
+                       case TABULAR_CODE:
+                               enable = cmd.argument() == "tabular";
+                               break;
+                       case ERT_CODE:
+                               enable = cmd.argument() == "ert";
+                               break;
+                       case FLOAT_CODE:
+                               enable = cmd.argument() == "float";
+                               break;
+                       case WRAP_CODE:
+                               enable = cmd.argument() == "wrap";
+                               break;
+                       case NOTE_CODE:
+                               enable = cmd.argument() == "note";
+                               break;
+                       case BRANCH_CODE:
+                               enable = cmd.argument() == "branch";
+                               break;
+                       case BOX_CODE:
+                               enable = cmd.argument() == "box";
+                               break;
+                       case LISTINGS_CODE:
+                               enable = cmd.argument() == "listings";
+                               break;
+                       default:
+                               break;
+               }
+               flag.enabled(enable);
+               break;
+       }
+
+       case LFUN_DIALOG_SHOW_NEW_INSET:
+               flag.enabled(cur.inset().lyxCode() != ERT_CODE &&
+                       cur.inset().lyxCode() != LISTINGS_CODE);
+               if (cur.inset().lyxCode() == CAPTION_CODE) {
+                       FuncStatus flag;
+                       if (cur.inset().getStatus(cur, cmd, flag))
+                               return flag;
+               }
+               break;
+
        default:
                flag.enabled(false);
        }
@@ -707,57 +904,37 @@ FuncStatus BufferView::getStatus(FuncRequest const & cmd)
 }
 
 
-Update::flags BufferView::dispatch(FuncRequest const & cmd)
+bool BufferView::dispatch(FuncRequest const & cmd)
 {
-       //lyxerr << BOOST_CURRENT_FUNCTION
-       //       << [ cmd = " << cmd << "]" << endl;
+       //lyxerr << [ cmd = " << cmd << "]" << endl;
 
        // Make sure that the cached BufferView is correct.
-       LYXERR(Debug::ACTION) << BOOST_CURRENT_FUNCTION
-               << " action[" << cmd.action << ']'
+       LYXERR(Debug::ACTION, " action[" << cmd.action << ']'
                << " arg[" << to_utf8(cmd.argument()) << ']'
                << " x[" << cmd.x << ']'
                << " y[" << cmd.y << ']'
-               << " button[" << cmd.button() << ']'
-               << endl;
+               << " button[" << cmd.button() << ']');
 
-       Cursor & cur = cursor_;
-       // Default Update flags.
-       Update::flags updateFlags = Update::Force | Update::FitCursor;
+       Cursor & cur = d->cursor_;
 
        switch (cmd.action) {
 
        case LFUN_UNDO:
                cur.message(_("Undo"));
                cur.clearSelection();
-               if (!textUndo(*this)) {
+               if (!cur.textUndo())
                        cur.message(_("No further undo information"));
-                       updateFlags = Update::None;
-               }
+               else
+                       processUpdateFlags(Update::Force | Update::FitCursor);
                break;
 
        case LFUN_REDO:
                cur.message(_("Redo"));
                cur.clearSelection();
-               if (!textRedo(*this)) {
+               if (!cur.textRedo())
                        cur.message(_("No further redo information"));
-                       updateFlags = Update::None;
-               }
-               break;
-
-       case LFUN_FILE_INSERT:
-               // FIXME UNICODE
-               menuInsertLyXFile(to_utf8(cmd.argument()));
-               break;
-
-       case LFUN_FILE_INSERT_PLAINTEXT_PARA:
-               // FIXME UNICODE
-               insertPlaintextFile(this, to_utf8(cmd.argument()), true);
-               break;
-
-       case LFUN_FILE_INSERT_PLAINTEXT:
-               // FIXME UNICODE
-               insertPlaintextFile(this, to_utf8(cmd.argument()), false);
+               else
+                       processUpdateFlags(Update::Force | Update::FitCursor);
                break;
 
        case LFUN_FONT_STATE:
@@ -772,8 +949,8 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
                docstring label = cmd.argument();
                if (label.empty()) {
                        InsetRef * inset =
-                               getInsetByCode<InsetRef>(cursor_,
-                                                        Inset::REF_CODE);
+                               getInsetByCode<InsetRef>(d->cursor_,
+                                                        REF_CODE);
                        if (inset) {
                                label = inset->getParam("reference");
                                // persistent=false: use temp_bookmark
@@ -794,24 +971,21 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
 
                        ParIterator par = b->getParFromID(id);
                        if (par == b->par_iterator_end()) {
-                               LYXERR(Debug::INFO)
-                                       << "No matching paragraph found! ["
-                                       << id << "]." << endl;
+                               LYXERR(Debug::INFO, "No matching paragraph found! [" << id << "].");
                        } else {
-                               LYXERR(Debug::INFO)
-                                       << "Paragraph " << par->id()
+                               LYXERR(Debug::INFO, "Paragraph " << par->id()
                                        << " found in buffer `"
-                                       << b->fileName() << "'." << endl;
+                                       << b->absFileName() << "'.");
 
                                if (b == &buffer_) {
                                        // Set the cursor
                                        setCursor(makeDocIterator(par, 0));
+                                       showCursor();
                                } else {
                                        // Switch to other buffer view and resend cmd
                                        theLyXFunc().dispatch(FuncRequest(
-                                               LFUN_BUFFER_SWITCH, b->fileName()));
+                                               LFUN_BUFFER_SWITCH, b->absFileName()));
                                        theLyXFunc().dispatch(cmd);
-                                       updateFlags = Update::None;
                                }
                                break;
                        }
@@ -820,33 +994,14 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
                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:
-               gotoInset(this, Inset::NOTE_CODE, false);
+               gotoInset(this, NOTE_CODE, false);
                break;
 
        case LFUN_REFERENCE_NEXT: {
-               vector<Inset_code> tmp;
-               tmp.push_back(Inset::LABEL_CODE);
-               tmp.push_back(Inset::REF_CODE);
+               vector<InsetCode> tmp;
+               tmp.push_back(LABEL_CODE);
+               tmp.push_back(REF_CODE);
                gotoInset(this, tmp, true);
                break;
        }
@@ -889,21 +1044,21 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
 
        case LFUN_ALL_CHANGES_ACCEPT:
                // select complete document
-               cursor_.reset(buffer_.inset());
-               cursor_.selHandle(true);
-               buffer_.text().cursorBottom(cursor_);
+               d->cursor_.reset(buffer_.inset());
+               d->cursor_.selHandle(true);
+               buffer_.text().cursorBottom(d->cursor_);
                // accept everything in a single step to support atomic undo
-               buffer_.text().acceptOrRejectChanges(cursor_, Text::ACCEPT);
+               buffer_.text().acceptOrRejectChanges(d->cursor_, Text::ACCEPT);
                break;
 
        case LFUN_ALL_CHANGES_REJECT:
                // select complete document
-               cursor_.reset(buffer_.inset());
-               cursor_.selHandle(true);
-               buffer_.text().cursorBottom(cursor_);
+               d->cursor_.reset(buffer_.inset());
+               d->cursor_.selHandle(true);
+               buffer_.text().cursorBottom(d->cursor_);
                // reject everything in a single step to support atomic undo
                // Note: reject does not work recursively; the user may have to repeat the operation
-               buffer_.text().acceptOrRejectChanges(cursor_, Text::REJECT);
+               buffer_.text().acceptOrRejectChanges(d->cursor_, Text::REJECT);
                break;
 
        case LFUN_WORD_FIND:
@@ -952,14 +1107,14 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
                break;
 
        case LFUN_SCREEN_RECENTER:
-               center();
+               showCursor();
                break;
 
        case LFUN_BIBTEX_DATABASE_ADD: {
-               Cursor tmpcur = cursor_;
-               findInset(tmpcur, Inset::BIBTEX_CODE, false);
+               Cursor tmpcur = d->cursor_;
+               findInset(tmpcur, BIBTEX_CODE, false);
                InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
-                                               Inset::BIBTEX_CODE);
+                                               BIBTEX_CODE);
                if (inset) {
                        if (inset->addDatabase(to_utf8(cmd.argument())))
                                buffer_.updateBibfilesCache();
@@ -968,10 +1123,10 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
        }
 
        case LFUN_BIBTEX_DATABASE_DEL: {
-               Cursor tmpcur = cursor_;
-               findInset(tmpcur, Inset::BIBTEX_CODE, false);
+               Cursor tmpcur = d->cursor_;
+               findInset(tmpcur, BIBTEX_CODE, false);
                InsetBibtex * inset = getInsetByCode<InsetBibtex>(tmpcur,
-                                               Inset::BIBTEX_CODE);
+                                               BIBTEX_CODE);
                if (inset) {
                        if (inset->delDatabase(to_utf8(cmd.argument())))
                                buffer_.updateBibfilesCache();
@@ -979,7 +1134,7 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
                break;
        }
 
-       case LFUN_WORDS_COUNT: {
+       case LFUN_STATISTICS: {
                DocIterator from, to;
                if (cur.selection()) {
                        from = cur.selectionBegin();
@@ -988,24 +1143,30 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
                        from = doc_iterator_begin(buffer_.inset());
                        to = doc_iterator_end(buffer_.inset());
                }
-               int const count = countWords(from, to);
+               int const words = countWords(from, to);
+               int const chars = countChars(from, to, false);
+               int const chars_blanks = countChars(from, to, true);
                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.");
-               }
+               if (cur.selection())
+                       message = _("Statistics for the selection:\n");
+               else
+                       message = _("Statistics for the document:\n");
+               if (words != 1)
+                       message += bformat(_("\n%1$d words"), words);
+               else
+                       message += _("\nOne word");
+               if (chars_blanks != 1)
+                       message += bformat(_("\n%1$d characters (including blanks)"),
+                                         chars_blanks);
+               else
+                       message += _("\nOne character (including blanks)");
+               if (chars != 1)
+                       message += bformat(_("\n%1$d characters (excluding blanks)"),
+                                         chars);
+               else
+                       message += _("\nOne character (excluding blanks)");
 
-               Alert::information(_("Count words"), message);
+               Alert::information(_("Statistics"), message);
        }
                break;
 
@@ -1013,6 +1174,16 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
                // turn compression on/off
                buffer_.params().compressed = !buffer_.params().compressed;
                break;
+       
+       case LFUN_BUFFER_TOGGLE_EMBEDDING: {
+               // turn embedding on/off
+               try {
+                       buffer_.embeddedFiles().enable(!buffer_.params().embedded, buffer_);
+               } catch (ExceptionMessage const & message) {
+                       Alert::error(message.title_, message.details_);
+               }
+               break;
+       }
 
        case LFUN_NEXT_INSET_TOGGLE: {
                // this is the real function we want to invoke
@@ -1023,7 +1194,7 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
                if (inset) {
                        if (inset->isActive()) {
                                Cursor tmpcur = cur;
-                               tmpcur.pushLeft(*inset);
+                               tmpcur.pushBackward(*inset);
                                inset->dispatch(tmpcur, tmpcmd);
                                if (tmpcur.result().dispatched()) {
                                        cur.dispatched();
@@ -1036,77 +1207,81 @@ Update::flags BufferView::dispatch(FuncRequest const & cmd)
                if (!cur.result().dispatched())
                        cur.dispatch(tmpcmd);
 
-               if (cur.result().dispatched())
-                       cur.clearSelection();
-
+               if (!cur.result().dispatched())
+                       // It did not work too; no action needed.
+                       break;
+               cur.clearSelection();
+               processUpdateFlags(Update::SinglePar | Update::FitCursor);
                break;
        }
 
        case LFUN_SCREEN_UP:
        case LFUN_SCREEN_DOWN: {
-               Point p = bv_funcs::getPos(*this, cur, cur.boundary());
+               Point p = getPos(cur, cur.boundary());
                if (p.y_ < 0 || p.y_ > height_) {
                        // The cursor is off-screen so recenter before proceeding.
-                       center();
-                       updateMetrics(false);
-                       //FIXME: updateMetrics() does not update paragraph position
-                       // This is done at draw() time. So we need a redraw!
-                       buffer_.changed();
-                       p = bv_funcs::getPos(*this, cur, cur.boundary());
+                       showCursor();
+                       p = getPos(cur, cur.boundary());
                }
                scroll(cmd.action == LFUN_SCREEN_UP? - height_ : height_);
                cur.reset(buffer_.inset());
-               text_metrics_[&buffer_.text()].editXY(cur, p.x_, p.y_);
+               d->text_metrics_[&buffer_.text()].editXY(cur, p.x_, p.y_);
                //FIXME: what to do with cur.x_target()?
-               finishUndo();
-               // The metrics are already up to date. see scroll()
-               updateFlags = Update::None;
+               cur.finishUndo();
                break;
        }
 
+       case LFUN_SCROLL:
+               lfunScroll(cmd);
+               break;
+
        case LFUN_SCREEN_UP_SELECT:
        case LFUN_SCREEN_DOWN_SELECT: {
+               // Those two are not ready yet for consumption.
+               return false;
+
                cur.selHandle(true);
                size_t initial_depth = cur.depth();
-               Point const p = bv_funcs::getPos(*this, cur, cur.boundary());
+               Point const p = getPos(cur, cur.boundary());
                scroll(cmd.action == LFUN_SCREEN_UP_SELECT? - height_ : height_);
                // FIXME: We need to verify if the cursor stayed within an inset...
                //cur.reset(buffer_.inset());
-               text_metrics_[&buffer_.text()].editXY(cur, p.x_, p.y_);
-               finishUndo();
+               d->text_metrics_[&buffer_.text()].editXY(cur, p.x_, p.y_);
+               cur.finishUndo();
                while (cur.depth() > initial_depth) {
                        cur.forwardInset();
                }
                // FIXME: we need to do a redraw again because of the selection
+               // But no screen update is needed.
+               d->update_strategy_ = NoScreenUpdate;
                buffer_.changed();
-               updateFlags = Update::Force | Update::FitCursor;
                break;
        }
 
        default:
-               updateFlags = Update::None;
+               return false;
        }
 
-       return updateFlags;
+       return true;
 }
 
 
 docstring const BufferView::requestSelection()
 {
-       Cursor & cur = cursor_;
+       Cursor & cur = d->cursor_;
 
        if (!cur.selection()) {
-               xsel_cache_.set = false;
+               d->xsel_cache_.set = false;
                return docstring();
        }
 
-       if (!xsel_cache_.set ||
-           cur.top() != xsel_cache_.cursor ||
-           cur.anchor_.top() != xsel_cache_.anchor)
+       if (!d->xsel_cache_.set ||
+           cur.top() != d->xsel_cache_.cursor ||
+           cur.anchor_.top() != d->xsel_cache_.anchor)
        {
-               xsel_cache_.cursor = cur.top();
-               xsel_cache_.anchor = cur.anchor_.top();
-               xsel_cache_.set = cur.selection();
+               d->xsel_cache_.cursor = cur.top();
+               d->xsel_cache_.anchor = cur.anchor_.top();
+               d->xsel_cache_.set = cur.selection();
                return cur.selectionAsString(false);
        }
        return docstring();
@@ -1115,12 +1290,12 @@ docstring const BufferView::requestSelection()
 
 void BufferView::clearSelection()
 {
-       cursor_.clearSelection();
+       d->cursor_.clearSelection();
        // Clear the selection buffer. Otherwise a subsequent
        // middle-mouse-button paste would use the selection buffer,
        // not the more current external selection.
        cap::clearSelection();
-       xsel_cache_.set = false;
+       d->xsel_cache_.set = false;
        // The buffer did not really change, but this causes the
        // redraw we need because we cleared the selection above.
        buffer_.changed();
@@ -1133,13 +1308,17 @@ void BufferView::resize(int width, int height)
        width_ = width;
        height_ = height;
 
-       updateMetrics(false);
+       // Clear the paragraph height cache.
+       d->par_height_.clear();
+
+       updateMetrics();
 }
 
 
-Inset const * BufferView::getCoveringInset(Text const & text, int x, int y)
+Inset const * BufferView::getCoveringInset(Text const & text,
+               int x, int y) const
 {
-       TextMetrics & tm = text_metrics_[&text];
+       TextMetrics & tm = d->text_metrics_[&text];
        Inset * inset = tm.checkInsetHit(x, y);
        if (!inset)
                return 0;
@@ -1166,9 +1345,9 @@ Inset const * BufferView::getCoveringInset(Text const & text, int x, int y)
 }
 
 
-bool BufferView::workAreaDispatch(FuncRequest const & cmd0)
+void BufferView::mouseEventDispatch(FuncRequest const & cmd0)
 {
-       //lyxerr << BOOST_CURRENT_FUNCTION << "[ cmd0 " << cmd0 << "]" << endl;
+       //lyxerr << "[ cmd0 " << cmd0 << "]" << endl;
 
        // This is only called for mouse related events including
        // LFUN_FILE_OPEN generated by drag-and-drop.
@@ -1176,7 +1355,7 @@ bool BufferView::workAreaDispatch(FuncRequest const & cmd0)
 
        Cursor cur(*this);
        cur.push(buffer_.inset());
-       cur.selection() = cursor_.selection();
+       cur.selection() = d->cursor_.selection();
 
        // Either the inset under the cursor or the
        // surrounding Text will handle this event.
@@ -1189,48 +1368,36 @@ bool BufferView::workAreaDispatch(FuncRequest const & cmd0)
                // Get inset under mouse, if there is one.
                Inset const * covering_inset =
                        getCoveringInset(buffer_.text(), cmd.x, cmd.y);
-               if (covering_inset == last_inset_)
+               if (covering_inset == d->last_inset_)
                        // Same inset, no need to do anything...
-                       return false;
+                       return;
 
                bool need_redraw = false;
                // const_cast because of setMouseHover().
                Inset * inset = const_cast<Inset *>(covering_inset);
-               if (last_inset_)
+               if (d->last_inset_)
                        // Remove the hint on the last hovered inset (if any).
-                       need_redraw |= last_inset_->setMouseHover(false);
+                       need_redraw |= d->last_inset_->setMouseHover(false);
                if (inset)
                        // Highlighted the newly hovered inset (if any).
                        need_redraw |= inset->setMouseHover(true);
-               last_inset_ = inset;
+               d->last_inset_ = inset;
                if (!need_redraw)
-                       return false;
+                       return;
+
+               LYXERR(Debug::PAINTING, "Mouse hover detected at: ("
+                       << cmd.x << ", " << cmd.y << ")");
 
-               // if last metrics update was in singlepar mode, WorkArea::redraw() will
-               // not expose the button for redraw. We adjust here the metrics dimension
-               // to enable a full redraw in any case as this is not costly.
-               TextMetrics & tm = text_metrics_[&buffer_.text()];
-               std::pair<pit_type, ParagraphMetrics const *> firstpm = tm.first();
-               std::pair<pit_type, ParagraphMetrics const *> lastpm = tm.last();
-               int y1 = firstpm.second->position() - firstpm.second->ascent();
-               int y2 = lastpm.second->position() + lastpm.second->descent();
-               metrics_info_ = ViewMetricsInfo(firstpm.first, lastpm.first, y1, y2,
-                       FullScreenUpdate, buffer_.text().paragraphs().size());
-               // Reinitialize anchor to first pit.
-               anchor_ref_ = firstpm.first;
-               offset_ref_ = -y1;
-               LYXERR(Debug::PAINTING)
-                       << "Mouse hover detected at: (" << cmd.x << ", " << cmd.y << ")"
-                       << "\nTriggering redraw: y1: " << y1 << " y2: " << y2
-                       << " pit1: " << firstpm.first << " pit2: " << lastpm.first << endl;
+               d->update_strategy_ = DecorationUpdate;
 
                // This event (moving without mouse click) is not passed further.
                // This should be changed if it is further utilized.
-               return true;
+               buffer_.changed();
+               return;
        }
 
        // Build temporary cursor.
-       Inset * inset = text_metrics_[&buffer_.text()].editXY(cur, cmd.x, cmd.y);
+       Inset * inset = d->text_metrics_[&buffer_.text()].editXY(cur, cmd.x, cmd.y);
 
        // Put anchor at the same position.
        cur.resetAnchor();
@@ -1239,9 +1406,8 @@ bool BufferView::workAreaDispatch(FuncRequest const & cmd0)
        // 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) {
+       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.
@@ -1251,11 +1417,32 @@ bool BufferView::workAreaDispatch(FuncRequest const & cmd0)
        //Do we have a selection?
        theSelection().haveSelection(cursor().selection());
 
-       // Redraw if requested and necessary.
-       if (cur.result().dispatched() && cur.result().update())
-               return update(cur.result().update());
+       // If the command has been dispatched,
+       if (cur.result().dispatched()
+               // an update is asked,
+               && cur.result().update())
+               processUpdateFlags(cur.result().update());
+}
 
-       return false;
+
+void BufferView::lfunScroll(FuncRequest const & cmd)
+{
+       string const scroll_type = cmd.getArg(0);
+       int const scroll_step = 
+               (scroll_type == "line")? d->scrollbarParameters_.lineScrollHeight
+               : (scroll_type == "page")? height_ : 0;
+       if (scroll_step == 0)
+               return;
+       string const scroll_quantity = cmd.getArg(1);
+       if (scroll_quantity == "up")
+               scrollUp(scroll_step);
+       else if (scroll_quantity == "down")
+               scrollDown(scroll_step);
+       else {
+               int const scroll_value = convert<int>(scroll_quantity);
+               if (scroll_value)
+                       scroll(scroll_step * scroll_value);
+       }
 }
 
 
@@ -1271,10 +1458,10 @@ void BufferView::scroll(int y)
 void BufferView::scrollDown(int offset)
 {
        Text * text = &buffer_.text();
-       TextMetrics & tm = text_metrics_[text];
+       TextMetrics & tm = d->text_metrics_[text];
        int ymax = height_ + offset;
        while (true) {
-               std::pair<pit_type, ParagraphMetrics const *> last = tm.last();
+               pair<pit_type, ParagraphMetrics const *> last = tm.last();
                int bottom_pos = last.second->position() + last.second->descent();
                if (last.first + 1 == int(text->paragraphs().size())) {
                        if (bottom_pos <= height_)
@@ -1286,8 +1473,8 @@ void BufferView::scrollDown(int offset)
                        break;
                tm.newParMetricsDown();
        }
-       offset_ref_ += offset;
-       updateMetrics(false);
+       d->anchor_ypos_ -= offset;
+       updateMetrics();
        buffer_.changed();
 }
 
@@ -1295,10 +1482,10 @@ void BufferView::scrollDown(int offset)
 void BufferView::scrollUp(int offset)
 {
        Text * text = &buffer_.text();
-       TextMetrics & tm = text_metrics_[text];
+       TextMetrics & tm = d->text_metrics_[text];
        int ymin = - offset;
        while (true) {
-               std::pair<pit_type, ParagraphMetrics const *> first = tm.first();
+               pair<pit_type, ParagraphMetrics const *> first = tm.first();
                int top_pos = first.second->position() - first.second->ascent();
                if (first.first == 0) {
                        if (top_pos >= 0)
@@ -1310,8 +1497,8 @@ void BufferView::scrollUp(int offset)
                        break;
                tm.newParMetricsUp();
        }
-       offset_ref_ -= offset;
-       updateMetrics(false);
+       d->anchor_ypos_ += offset;
+       updateMetrics();
        buffer_.changed();
 }
 
@@ -1323,11 +1510,11 @@ void BufferView::setCursorFromRow(int row)
 
        buffer_.texrow().getIdFromRow(row, tmpid, tmppos);
 
-       cursor_.reset(buffer_.inset());
+       d->cursor_.reset(buffer_.inset());
        if (tmpid == -1)
-               buffer_.text().setCursor(cursor_, 0, 0);
+               buffer_.text().setCursor(d->cursor_, 0, 0);
        else
-               buffer_.text().setCursor(cursor_, buffer_.getParFromID(tmpid).pit(), tmppos);
+               buffer_.text().setCursor(d->cursor_, buffer_.getParFromID(tmpid).pit(), tmppos);
 }
 
 
@@ -1336,9 +1523,9 @@ void BufferView::gotoLabel(docstring const & label)
        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()) {
+               if (find(labels.begin(), labels.end(), label) != labels.end()) {
                        setCursor(it);
-                       update();
+                       showCursor();
                        return;
                }
        }
@@ -1353,9 +1540,9 @@ TextMetrics const & BufferView::textMetrics(Text const * t) const
 
 TextMetrics & BufferView::textMetrics(Text const * t)
 {
-       TextMetricsCache::iterator tmc_it  = text_metrics_.find(t);
-       if (tmc_it == text_metrics_.end()) {
-               tmc_it = text_metrics_.insert(
+       TextMetricsCache::iterator tmc_it  = d->text_metrics_.find(t);
+       if (tmc_it == d->text_metrics_.end()) {
+               tmc_it = d->text_metrics_.insert(
                        make_pair(t, TextMetrics(this, const_cast<Text *>(t)))).first;
        }
        return tmc_it->second;
@@ -1379,10 +1566,10 @@ void BufferView::setCursor(DocIterator const & dit)
 {
        size_t const n = dit.depth();
        for (size_t i = 0; i < n; ++i)
-               dit[i].inset().edit(cursor_, true);
+               dit[i].inset().edit(d->cursor_, true);
 
-       cursor_.setCursor(dit);
-       cursor_.selection() = false;
+       d->cursor_.setCursor(dit);
+       d->cursor_.selection() = false;
 }
 
 
@@ -1393,7 +1580,7 @@ bool BufferView::checkDepm(Cursor & cur, Cursor & old)
                return false;
 
        bool need_anchor_change = false;
-       bool changed = cursor_.text()->deleteEmptyParagraphMechanism(cur, old,
+       bool changed = d->cursor_.text()->deleteEmptyParagraphMechanism(cur, old,
                need_anchor_change);
 
        if (need_anchor_change)
@@ -1402,35 +1589,41 @@ bool BufferView::checkDepm(Cursor & cur, Cursor & old)
        if (!changed)
                return false;
 
+       d->cursor_ = cur;
+
        updateLabels(buffer_);
 
-       updateMetrics(false);
+       updateMetrics();
        buffer_.changed();
        return true;
 }
 
 
-bool BufferView::mouseSetCursor(Cursor & cur)
+bool BufferView::mouseSetCursor(Cursor & cur, bool select)
 {
        BOOST_ASSERT(&cur.bv() == this);
 
-       // this event will clear selection so we save selection for
-       // persistent selection
-       cap::saveSelection(cursor());
+       if (!select)
+               // this event will clear selection so we save selection for
+               // persistent selection
+               cap::saveSelection(cursor());
 
        // Has the cursor just left the inset?
        bool badcursor = false;
-       bool leftinset = (&cursor_.inset() != &cur.inset());
+       bool leftinset = (&d->cursor_.inset() != &cur.inset());
        if (leftinset)
-               badcursor = notifyCursorLeaves(cursor_, cur);
+               badcursor = notifyCursorLeaves(d->cursor_, cur);
+
+       // FIXME: shift-mouse selection doesn't work well across insets.
+       bool do_selection = select && &d->cursor_.anchor().inset() == &cur.inset();
 
        // do the dEPM magic if needed
        // FIXME: (1) move this to InsetText::notifyCursorLeaves?
        // FIXME: (2) if we had a working InsetText::notifyCursorLeaves,
        // the leftinset bool would not be necessary (badcursor instead).
        bool update = leftinset;
-       if (!badcursor && cursor_.inTexted())
-               update |= checkDepm(cur, cursor_);
+       if (!do_selection && !badcursor && d->cursor_.inTexted())
+               update |= checkDepm(cur, d->cursor_);
 
        // if the cursor was in an empty script inset and the new
        // position is in the nucleus of the inset, notifyCursorLeaves
@@ -1439,7 +1632,7 @@ bool BufferView::mouseSetCursor(Cursor & cur)
        // For an example, see bug 2933:
        // http://bugzilla.lyx.org/show_bug.cgi?id=2933
        // The code below could maybe be moved to a DocIterator method.
-       //lyxerr << "cur before " << cur <<std::endl;
+       //lyxerr << "cur before " << cur <<endl;
        DocIterator dit(cur.inset());
        dit.push_back(cur.bottom());
        size_t i = 1;
@@ -1447,12 +1640,17 @@ bool BufferView::mouseSetCursor(Cursor & cur)
                dit.push_back(cur[i]);
                ++i;
        }
-       //lyxerr << "5 cur after" << dit <<std::endl;
+       //lyxerr << "5 cur after" << dit <<endl;
 
-       cursor_.setCursor(dit);
-       cursor_.boundary(cur.boundary());
-       cursor_.clearSelection();
-       finishUndo();
+       d->cursor_.setCursor(dit);
+       d->cursor_.boundary(cur.boundary());
+       if (do_selection)
+               d->cursor_.setSelection();
+       else
+               d->cursor_.clearSelection();
+
+       d->cursor_.finishUndo();
+       d->cursor_.setCurrentFont();
        return update;
 }
 
@@ -1460,48 +1658,42 @@ bool BufferView::mouseSetCursor(Cursor & cur)
 void BufferView::putSelectionAt(DocIterator const & cur,
                                int length, bool backwards)
 {
-       cursor_.clearSelection();
+       d->cursor_.clearSelection();
 
        setCursor(cur);
 
        if (length) {
                if (backwards) {
-                       cursor_.pos() += length;
-                       cursor_.setSelection(cursor_, -length);
+                       d->cursor_.pos() += length;
+                       d->cursor_.setSelection(d->cursor_, -length);
                } else
-                       cursor_.setSelection(cursor_, length);
+                       d->cursor_.setSelection(d->cursor_, length);
        }
 }
 
 
 Cursor & BufferView::cursor()
 {
-       return cursor_;
+       return d->cursor_;
 }
 
 
 Cursor const & BufferView::cursor() const
 {
-       return cursor_;
+       return d->cursor_;
 }
 
 
 pit_type BufferView::anchor_ref() const
 {
-       return anchor_ref_;
-}
-
-
-ViewMetricsInfo const & BufferView::viewMetricsInfo()
-{
-       return metrics_info_;
+       return d->anchor_pit_;
 }
 
 
 bool BufferView::singleParUpdate()
 {
        Text & buftext = buffer_.text();
-       pit_type const bottom_pit = cursor_.bottom().pit();
+       pit_type const bottom_pit = d->cursor_.bottom().pit();
        TextMetrics & tm = textMetrics(&buftext);
        int old_height = tm.parMetrics(bottom_pit).height();
 
@@ -1516,218 +1708,379 @@ bool BufferView::singleParUpdate()
                // the singlePar optimisation.
                return false;
 
-       int y1 = pm.position() - pm.ascent();
-       int y2 = pm.position() + pm.descent();
-       metrics_info_ = ViewMetricsInfo(bottom_pit, bottom_pit, y1, y2,
-               SingleParUpdate, buftext.paragraphs().size());
-       LYXERR(Debug::PAINTING)
-               << BOOST_CURRENT_FUNCTION
-               << "\ny1: " << y1
-               << " y2: " << y2
+       d->update_strategy_ = SingleParUpdate;
+
+       LYXERR(Debug::PAINTING, "\ny1: " << pm.position() - pm.ascent()
+               << " y2: " << pm.position() + pm.descent()
                << " pit: " << bottom_pit
-               << " singlepar: 1"
-               << endl;
+               << " singlepar: 1");
        return true;
 }
 
 
-void BufferView::updateMetrics(bool singlepar)
+void BufferView::updateMetrics()
 {
-       if (singlepar && singleParUpdate())
-               // No need to update the full screen metrics.
-               return;
-
        Text & buftext = buffer_.text();
        pit_type const npit = int(buftext.paragraphs().size());
 
-       if (anchor_ref_ > int(npit - 1)) {
-               anchor_ref_ = int(npit - 1);
-               offset_ref_ = 0;
-       }
-
        // Clear out the position cache in case of full screen redraw,
-       coord_cache_.clear();
+       d->coord_cache_.clear();
 
        // Clear out paragraph metrics to avoid having invalid metrics
        // in the cache from paragraphs not relayouted below
        // The complete text metrics will be redone.
-       text_metrics_.clear();
+       d->text_metrics_.clear();
 
        TextMetrics & tm = textMetrics(&buftext);
 
-       pit_type const pit = anchor_ref_;
-       int pit1 = pit;
-       int pit2 = pit;
-
        // Rebreak anchor paragraph.
-       tm.redoParagraph(pit);
+       tm.redoParagraph(d->anchor_pit_);
+       ParagraphMetrics & anchor_pm = tm.par_metrics_[d->anchor_pit_];
+       anchor_pm.setPosition(d->anchor_ypos_);
 
-       // Take care of anchor offset if case a recentering is needed.
-       updateOffsetRef();
-
-       int y0 = tm.parMetrics(pit).ascent() - offset_ref_;
+       LYXERR(Debug::PAINTING, "metrics: "
+               << " anchor pit = " << d->anchor_pit_
+               << " anchor ypos = " << d->anchor_ypos_);
 
        // Redo paragraphs above anchor if necessary.
-       int y1 = y0;
-       while (y1 > 0 && pit1 > 0) {
-               y1 -= tm.parMetrics(pit1).ascent();
-               --pit1;
+       int y1 = d->anchor_ypos_ - anchor_pm.ascent();
+       // We are now just above the anchor paragraph.
+       pit_type pit1 = d->anchor_pit_ - 1;
+       for (; pit1 >= 0 && y1 >= 0; --pit1) {
                tm.redoParagraph(pit1);
-               y1 -= tm.parMetrics(pit1).descent();
-       }
-
-       // Take care of ascent of first line
-       y1 -= tm.parMetrics(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;
+               ParagraphMetrics & pm = tm.par_metrics_[pit1];
+               y1 -= pm.descent();
+               // Save the paragraph position in the cache.
+               pm.setPosition(y1);
+               y1 -= pm.ascent();
        }
 
        // Redo paragraphs below the anchor if necessary.
-       int y2 = y0;
-       while (y2 < height_ && pit2 < int(npit) - 1) {
-               y2 += tm.parMetrics(pit2).descent();
-               ++pit2;
+       int y2 = d->anchor_ypos_ + anchor_pm.descent();
+       // We are now just below the anchor paragraph.
+       pit_type pit2 = d->anchor_pit_ + 1;
+       for (; pit2 < npit && y2 <= height_; ++pit2) {
                tm.redoParagraph(pit2);
-               y2 += tm.parMetrics(pit2).ascent();
+               ParagraphMetrics & pm = tm.par_metrics_[pit2];
+               y2 += pm.ascent();
+               // Save the paragraph position in the cache.
+               pm.setPosition(y2);
+               y2 += pm.descent();
        }
 
-       // Take care of descent of last line
-       y2 += tm.parMetrics(pit2).descent();
-
-       LYXERR(Debug::PAINTING)
-               << BOOST_CURRENT_FUNCTION
-               << "\n y1: " << y1
-               << " y2: " << y2
-               << " pit1: " << pit1
-               << " pit2: " << pit2
-               << " npit: " << npit
-               << " singlepar: 0"
-               << endl;
+       LYXERR(Debug::PAINTING, "Metrics: "
+               << " anchor pit = " << d->anchor_pit_
+               << " anchor ypos = " << d->anchor_ypos_
+               << " y1 = " << y1
+               << " y2 = " << y2
+               << " pit1 = " << pit1
+               << " pit2 = " << pit2);
 
-       metrics_info_ = ViewMetricsInfo(pit1, pit2, y1, y2,
-               FullScreenUpdate, npit);
+       d->update_strategy_ = FullScreenUpdate;
 
        if (lyxerr.debugging(Debug::WORKAREA)) {
-               LYXERR(Debug::WORKAREA) << "BufferView::updateMetrics" << endl;
-               coord_cache_.dump();
+               LYXERR(Debug::WORKAREA, "BufferView::updateMetrics");
+               d->coord_cache_.dump();
        }
 }
 
 
-void BufferView::menuInsertLyXFile(string const & filenm)
+void BufferView::insertLyXFile(FileName const & fname)
 {
-       BOOST_ASSERT(cursor_.inTexted());
-       string filename = filenm;
-
-       if (filename.empty()) {
-               // Launch a file browser
-               // FIXME UNICODE
-               string initpath = lyxrc.document_path;
-               string const trypath = buffer_.filePath();
-               // If directory is writeable, use this as default.
-               if (isDirWriteable(FileName(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().absFilename(),
-                                   "examples"))));
-
-               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;
-               }
-       }
+       BOOST_ASSERT(d->cursor_.inTexted());
 
        // Get absolute path of file and add ".lyx"
        // to the filename if necessary
-       filename = fileSearch(string(), filename, "lyx").absFilename();
+       FileName filename = fileSearch(string(), fname.absFilename(), "lyx");
 
-       docstring const disp_fn = makeDisplayPath(filename);
+       docstring const disp_fn = makeDisplayPath(filename.absFilename());
        // emit message signal.
        message(bformat(_("Inserting document %1$s..."), disp_fn));
 
        docstring res;
        Buffer buf("", false);
-       if (lyx::loadLyXFile(&buf, FileName(filename))) {
+       if (buf.loadLyXFile(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(),
+               buffer_.undo().recordUndo(d->cursor_);
+               cap::pasteParagraphList(d->cursor_, buf.paragraphs(),
                                             buf.params().getTextClassPtr(), el);
                res = _("Document %1$s inserted.");
-       } else
+       } else {
                res = _("Could not insert document %1$s");
+       }
 
+       updateMetrics();
+       buffer_.changed();
        // emit message signal.
        message(bformat(res, disp_fn));
        buffer_.errors("Parse");
-       updateMetrics(false);
+}
+
+
+Point BufferView::coordOffset(DocIterator const & dit, bool boundary) const
+{
+       int x = 0;
+       int y = 0;
+       int lastw = 0;
+
+       // Addup contribution of nested insets, from inside to outside,
+       // keeping the outer paragraph for a special handling below
+       for (size_t i = dit.depth() - 1; i >= 1; --i) {
+               CursorSlice const & sl = dit[i];
+               int xx = 0;
+               int yy = 0;
+               
+               // get relative position inside sl.inset()
+               sl.inset().cursorPos(*this, sl, boundary && (i + 1 == dit.depth()), xx, yy);
+               
+               // Make relative position inside of the edited inset relative to sl.inset()
+               x += xx;
+               y += yy;
+               
+               // In case of an RTL inset, the edited inset will be positioned to the left
+               // of xx:yy
+               if (sl.text()) {
+                       bool boundary_i = boundary && i + 1 == dit.depth();
+                       bool rtl = textMetrics(sl.text()).isRTL(sl, boundary_i);
+                       if (rtl)
+                               x -= lastw;
+               }
+
+               // remember width for the case that sl.inset() is positioned in an RTL inset
+               if (i && dit[i - 1].text()) {
+                       // If this Inset is inside a Text Inset, retrieve the Dimension
+                       // from the containing text instead of using Inset::dimension() which
+                       // might not be implemented.
+                       // FIXME (Abdel 23/09/2007): this is a bit messy because of the
+                       // elimination of Inset::dim_ cache. This coordOffset() method needs
+                       // to be rewritten in light of the new design.
+                       Dimension const & dim = parMetrics(dit[i - 1].text(),
+                               dit[i - 1].pit()).insetDimension(&sl.inset());
+                       lastw = dim.wid;
+               } else {
+                       Dimension const dim = sl.inset().dimension(*this);
+                       lastw = dim.wid;
+               }
+               
+               //lyxerr << "Cursor::getPos, i: "
+               // << i << " x: " << xx << " y: " << y << endl;
+       }
+
+       // Add contribution of initial rows of outermost paragraph
+       CursorSlice const & sl = dit[0];
+       TextMetrics const & tm = textMetrics(sl.text());
+       ParagraphMetrics const & pm = tm.parMetrics(sl.pit());
+       BOOST_ASSERT(!pm.rows().empty());
+       y -= pm.rows()[0].ascent();
+#if 1
+       // FIXME: document this mess
+       size_t rend;
+       if (sl.pos() > 0 && dit.depth() == 1) {
+               int pos = sl.pos();
+               if (pos && boundary)
+                       --pos;
+//             lyxerr << "coordOffset: boundary:" << boundary << " depth:" << dit.depth() << " pos:" << pos << " sl.pos:" << sl.pos() << endl;
+               rend = pm.pos2row(pos);
+       } else
+               rend = pm.pos2row(sl.pos());
+#else
+       size_t rend = pm.pos2row(sl.pos());
+#endif
+       for (size_t rit = 0; rit != rend; ++rit)
+               y += pm.rows()[rit].height();
+       y += pm.rows()[rend].ascent();
+       
+       TextMetrics const & bottom_tm = textMetrics(dit.bottom().text());
+       
+       // Make relative position from the nested inset now bufferview absolute.
+       int xx = bottom_tm.cursorX(dit.bottom(), boundary && dit.depth() == 1);
+       x += xx;
+       
+       // In the RTL case place the nested inset at the left of the cursor in 
+       // the outer paragraph
+       bool boundary_1 = boundary && 1 == dit.depth();
+       bool rtl = bottom_tm.isRTL(dit.bottom(), boundary_1);
+       if (rtl)
+               x -= lastw;
+       
+       return Point(x, y);
+}
+
+
+Point BufferView::getPos(DocIterator const & dit, bool boundary) const
+{
+       CursorSlice const & bot = dit.bottom();
+       TextMetrics const & tm = textMetrics(bot.text());
+       if (!tm.has(bot.pit()))
+               return Point(-1, -1);
+
+       Point p = coordOffset(dit, boundary); // offset from outer paragraph
+       p.y_ += tm.parMetrics(bot.pit()).position();
+       return p;
 }
 
 
 void BufferView::draw(frontend::Painter & pain)
 {
+       LYXERR(Debug::PAINTING, "\t\t*** START DRAWING ***");
+       Text & text = buffer_.text();
+       TextMetrics const & tm = d->text_metrics_[&text];
+       int const y = tm.first().second->position();
        PainterInfo pi(this, pain);
-       // Should the whole screen, including insets, be refreshed?
-       // FIXME: We should also distinguish DecorationUpdate to avoid text
-       // drawing if possible. This is not possible to do easily right now
-       // because of the single backing pixmap.
-       pi.full_repaint = metrics_info_.update_strategy != SingleParUpdate;
-
-       if (pi.full_repaint)
-               // Clear background (if not delegated to rows)
-               pain.fillRectangle(0, metrics_info_.y1, width_,
-                       metrics_info_.y2 - metrics_info_.y1,
+
+       switch (d->update_strategy_) {
+
+       case NoScreenUpdate:
+               // If no screen painting is actually needed, only some the different
+               // coordinates of insets and paragraphs needs to be updated.
+               pi.full_repaint = true;
+               pi.pain.setDrawingEnabled(false);
+               tm.draw(pi, 0, y);
+               break;
+
+       case SingleParUpdate:
+               pi.full_repaint = false;
+               // In general, only the current row of the outermost paragraph
+               // will be redrawn. Particular cases where selection spans
+               // multiple paragraph are correctly detected in TextMetrics.
+               tm.draw(pi, 0, y);
+               break;
+
+       case DecorationUpdate:
+               // FIXME: We should also distinguish DecorationUpdate to avoid text
+               // drawing if possible. This is not possible to do easily right now
+               // because of the single backing pixmap.
+
+       case FullScreenUpdate:
+               // The whole screen, including insets, will be refreshed.
+               pi.full_repaint = true;
+
+               // Clear background.
+               pain.fillRectangle(0, 0, width_, height_,
                        buffer_.inset().backgroundColor());
 
-       LYXERR(Debug::PAINTING) << "\t\t*** START DRAWING ***" << endl;
-       Text & text = buffer_.text();
-       TextMetrics const & tm = text_metrics_[&text];
-       int y = metrics_info_.y1 + tm.parMetrics(metrics_info_.p1).ascent();
-       if (!pi.full_repaint)
-               tm.drawParagraph(pi, metrics_info_.p1, 0, y);
-       else
+               // Draw everything.
                tm.draw(pi, 0, y);
-       LYXERR(Debug::PAINTING) << "\n\t\t*** END DRAWING  ***" << endl;
-
-       // and grey out above (should not happen later)
-//     lyxerr << "par ascent: " << text.getPar(metrics_info_.p1).ascent() << endl;
-       if (metrics_info_.y1 > 0
-               && metrics_info_.update_strategy == FullScreenUpdate)
-               pain.fillRectangle(0, 0, width_, metrics_info_.y1, Color::bottomarea);
-
-       // and possibly grey out below
-//     lyxerr << "par descent: " << text.getPar(metrics_info_.p1).ascent() << endl;
-       if (metrics_info_.y2 < height_
-               && metrics_info_.update_strategy == FullScreenUpdate)
-               pain.fillRectangle(0, metrics_info_.y2, width_,
-                       height_ - metrics_info_.y2, Color::bottomarea);
+
+               // and possibly grey out below
+               pair<pit_type, ParagraphMetrics const *> lastpm = tm.last();
+               int const y2 = lastpm.second->position() + lastpm.second->descent();
+               if (y2 < height_)
+                       pain.fillRectangle(0, y2, width_, height_ - y2, Color_bottomarea);
+               break;
+       }
+       LYXERR(Debug::PAINTING, "\n\t\t*** END DRAWING  ***");
+
+       // The scrollbar needs an update.
+       updateScrollbar();
+
+       // Normalize anchor for next time
+       pair<pit_type, ParagraphMetrics const *> firstpm = tm.first();
+       pair<pit_type, ParagraphMetrics const *> lastpm = tm.last();
+       for (pit_type pit = firstpm.first; pit <= lastpm.first; ++pit) {
+               ParagraphMetrics const & pm = tm.parMetrics(pit);
+               if (pm.position() + pm.descent() > 0) {
+                       d->anchor_pit_ = pit;
+                       d->anchor_ypos_ = pm.position();
+                       break;
+               }
+       }
+       LYXERR(Debug::PAINTING, "Found new anchor pit = " << d->anchor_pit_
+               << "  anchor ypos = " << d->anchor_ypos_);
+}
+
+
+void BufferView::message(docstring const & msg)
+{
+       if (d->gui_)
+               d->gui_->message(msg);
+}
+
+
+void BufferView::showDialog(string const & name)
+{
+       if (d->gui_)
+               d->gui_->showDialog(name, string());
+}
+
+
+void BufferView::showDialog(string const & name,
+       string const & data, Inset * inset)
+{
+       if (d->gui_)
+               d->gui_->showDialog(name, data, inset);
+}
+
+
+void BufferView::updateDialog(string const & name, string const & data)
+{
+       if (d->gui_)
+               d->gui_->updateDialog(name, data);
+}
+
+
+void BufferView::setGuiDelegate(frontend::GuiBufferViewDelegate * gui)
+{
+       d->gui_ = gui;
+}
+
+
+// FIXME: Move this out of BufferView again
+docstring BufferView::contentsOfPlaintextFile(FileName const & fname)
+{
+       if (!fname.isReadableFile()) {
+               docstring const error = from_ascii(strerror(errno));
+               docstring const file = makeDisplayPath(fname.absFilename(), 50);
+               docstring const text =
+                 bformat(_("Could not read the specified document\n"
+                           "%1$s\ndue to the error: %2$s"), file, error);
+               Alert::error(_("Could not read file"), text);
+               return docstring();
+       }
+
+       if (!fname.isReadableFile()) {
+               docstring const file = makeDisplayPath(fname.absFilename(), 50);
+               docstring const text =
+                 bformat(_("%1$s\n is not readable."), file);
+               Alert::error(_("Could not open file"), text);
+               return docstring();
+       }
+
+       // FIXME UNICODE: We don't know the encoding of the file
+       docstring file_content = fname.fileContents("UTF-8");
+       if (file_content.empty()) {
+               Alert::error(_("Reading not UTF-8 encoded file"),
+                            _("The file is not UTF-8 encoded.\n"
+                              "It will be read as local 8Bit-encoded.\n"
+                              "If this does not give the correct result\n"
+                              "then please change the encoding of the file\n"
+                              "to UTF-8 with a program other than LyX.\n"));
+               file_content = fname.fileContents("local8bit");
+       }
+
+       return normalize_c(file_content);
+}
+
+
+void BufferView::insertPlaintextFile(FileName const & f, bool asParagraph)
+{
+       docstring const tmpstr = contentsOfPlaintextFile(f);
+
+       if (tmpstr.empty())
+               return;
+
+       Cursor & cur = cursor();
+       cap::replaceSelection(cur);
+       buffer_.undo().recordUndo(cur);
+       if (asParagraph)
+               cur.innerText()->insertStringAsParagraphs(cur, tmpstr);
+       else
+               cur.innerText()->insertStringAsLines(cur, tmpstr);
+
+       updateMetrics();
+       buffer_.changed();
 }
 
 } // namespace lyx