]> git.lyx.org Git - lyx.git/blobdiff - src/text2.C
Fix bug 1792
[lyx.git] / src / text2.C
index 0be76d5ad164b0429952d0d945738313b63c5d21..917808ec8395ef3fa0de90f9adcdbae024957eaf 100644 (file)
 #include "bufferparams.h"
 #include "BufferView.h"
 #include "Bullet.h"
-#include "counters.h"
+#include "coordcache.h"
 #include "cursor.h"
 #include "CutAndPaste.h"
 #include "debug.h"
 #include "dispatchresult.h"
 #include "errorlist.h"
-#include "Floating.h"
-#include "FloatList.h"
 #include "funcrequest.h"
 #include "gettext.h"
 #include "language.h"
 #include "paragraph.h"
 #include "paragraph_funcs.h"
 #include "ParagraphParameters.h"
+#include "pariterator.h"
 #include "undo.h"
 #include "vspace.h"
 
 #include "frontends/font_metrics.h"
 #include "frontends/LyXView.h"
 
-#include "insets/insetbibitem.h"
 #include "insets/insetenv.h"
-#include "insets/insetfloat.h"
-#include "insets/insetwrap.h"
 
-#include "support/lstrings.h"
 #include "support/textutils.h"
-#include "support/tostr.h"
-#include "support/std_sstream.h"
 
-using lyx::par_type;
+#include <sstream>
+
+using lyx::pit_type;
 using lyx::pos_type;
-using lyx::support::bformat;
 
 using std::endl;
 using std::ostringstream;
@@ -70,9 +64,10 @@ using std::string;
 
 
 LyXText::LyXText(BufferView * bv)
-       : width_(0), maxwidth_(bv ? bv->workWidth() : 100), height_(0),
+       : maxwidth_(bv ? bv->workWidth() : 100),
          background_color_(LColor::background),
-         bv_owner(bv), xo_(0), yo_(0)
+         bv_owner(bv),
+         autoBreakRows_(false)
 {}
 
 
@@ -81,16 +76,16 @@ void LyXText::init(BufferView * bv)
        BOOST_ASSERT(bv);
        bv_owner = bv;
        maxwidth_ = bv->workWidth();
-       width_ = maxwidth_;
-       height_ = 0;
+       dim_.wid = maxwidth_;
+       dim_.asc = 10;
+       dim_.des = 10;
 
-       par_type const end = paragraphs().size();
-       for (par_type pit = 0; pit != end; ++pit)
-               pars_[pit].rows.clear();
+       pit_type const end = paragraphs().size();
+       for (pit_type pit = 0; pit != end; ++pit)
+               pars_[pit].rows().clear();
 
-       current_font = getFont(0, 0);
-       redoParagraphs(0, end);
-       updateCounters();
+       current_font = getFont(pars_[0], 0);
+       updateCounters(*bv->buffer());
 }
 
 
@@ -100,25 +95,62 @@ bool LyXText::isMainText() const
 }
 
 
+//takes screen x,y coordinates
+InsetBase * LyXText::checkInsetHit(int x, int y) const
+{
+       pit_type pit = getPitNearY(y);
+       BOOST_ASSERT(pit != -1);
+
+       Paragraph const & par = pars_[pit];
+
+       lyxerr << "checkInsetHit: x: " << x << " y: " << y << endl;
+       lyxerr << "  pit: " << pit << endl;
+       InsetList::const_iterator iit = par.insetlist.begin();
+       InsetList::const_iterator iend = par.insetlist.end();
+       for (; iit != iend; ++iit) {
+               InsetBase * inset = iit->inset;
+#if 1
+               lyxerr << "examining inset " << inset << endl;
+               if (theCoords.getInsets().has(inset))
+                       lyxerr
+                               << " xo: " << inset->xo() << "..."
+                               << inset->xo() + inset->width()
+                               << " yo: " << inset->yo() - inset->ascent()
+                               << "..."
+                               << inset->yo() + inset->descent() << endl;
+               else
+                       lyxerr << " inset has no cached position" << endl;
+#endif
+               if (inset->covers(x, y)) {
+                       lyxerr << "Hit inset: " << inset << endl;
+                       return inset;
+               }
+       }
+       lyxerr << "No inset hit. " << endl;
+       return 0;
+}
+
+
+
 // Gets the fully instantiated font at a given position in a paragraph
 // Basically the same routine as Paragraph::getFont() in paragraph.C.
 // The difference is that this one is used for displaying, and thus we
 // are allowed to make cosmetic improvements. For instance make footnotes
 // smaller. (Asger)
-LyXFont LyXText::getFont(par_type pit, pos_type pos) const
+LyXFont LyXText::getFont(Paragraph const & par, pos_type const pos) const
 {
        BOOST_ASSERT(pos >= 0);
 
-       LyXLayout_ptr const & layout = pars_[pit].layout();
+       LyXLayout_ptr const & layout = par.layout();
 #ifdef WITH_WARNINGS
 #warning broken?
 #endif
        BufferParams const & params = bv()->buffer()->params();
-       pos_type const body_pos = pars_[pit].beginOfBody();
+       pos_type const body_pos = par.beginOfBody();
 
        // We specialize the 95% common case:
-       if (!pars_[pit].getDepth()) {
-               LyXFont f = pars_[pit].getFontSettings(params, pos);
+       if (!par.getDepth()) {
+               LyXFont f = par.getFontSettings(params, pos);
                if (!isMainText())
                        f.realize(font_);
                if (layout->labeltype == LABEL_MANUAL && pos < body_pos)
@@ -134,21 +166,20 @@ LyXFont LyXText::getFont(par_type pit, pos_type pos) const
        else
                layoutfont = layout->font;
 
-       LyXFont font = pars_[pit].getFontSettings(params, pos);
+       LyXFont font = par.getFontSettings(params, pos);
        font.realize(layoutfont);
 
        if (!isMainText())
                font.realize(font_);
 
        // Realize with the fonts of lesser depth.
-       //font.realize(outerFont(pit, paragraphs()));
        font.realize(defaultfont_);
 
        return font;
 }
 
 
-LyXFont LyXText::getLayoutFont(par_type pit) const
+LyXFont LyXText::getLayoutFont(pit_type const pit) const
 {
        LyXLayout_ptr const & layout = pars_[pit].layout();
 
@@ -164,23 +195,22 @@ LyXFont LyXText::getLayoutFont(par_type pit) const
 }
 
 
-LyXFont LyXText::getLabelFont(par_type pit) const
+LyXFont LyXText::getLabelFont(Paragraph const & par) const
 {
-       LyXLayout_ptr const & layout = pars_[pit].layout();
+       LyXLayout_ptr const & layout = par.layout();
 
-       if (!pars_[pit].getDepth())
+       if (!par.getDepth())
                return layout->reslabelfont;
 
        LyXFont font = layout->labelfont;
        // Realize with the fonts of lesser depth.
-       font.realize(outerFont(pit, paragraphs()));
        font.realize(defaultfont_);
 
        return font;
 }
 
 
-void LyXText::setCharFont(par_type pit, pos_type pos, LyXFont const & fnt)
+void LyXText::setCharFont(pit_type pit, pos_type pos, LyXFont const & fnt)
 {
        LyXFont font = fnt;
        LyXLayout_ptr const & layout = pars_[pit].layout();
@@ -195,12 +225,12 @@ void LyXText::setCharFont(par_type pit, pos_type pos, LyXFont const & fnt)
 
        // Realize against environment font information
        if (pars_[pit].getDepth()) {
-               par_type tp = pit;
+               pit_type tp = pit;
                while (!layoutfont.resolved() &&
-                      tp != par_type(paragraphs().size()) &&
+                      tp != pit_type(paragraphs().size()) &&
                       pars_[tp].getDepth()) {
                        tp = outerHook(tp, paragraphs());
-                       if (tp != par_type(paragraphs().size()))
+                       if (tp != pit_type(paragraphs().size()))
                                layoutfont.realize(pars_[tp].layout()->font);
                }
        }
@@ -237,10 +267,10 @@ void LyXText::makeFontEntriesLayoutSpecific(BufferParams const & params,
 
 
 // return past-the-last paragraph influenced by a layout change on pit
-par_type LyXText::undoSpan(par_type pit)
+pit_type LyXText::undoSpan(pit_type pit)
 {
-       par_type end = paragraphs().size();
-       par_type nextpit = pit + 1;
+       pit_type end = paragraphs().size();
+       pit_type nextpit = pit + 1;
        if (nextpit == end)
                return nextpit;
        //because of parindents
@@ -255,16 +285,16 @@ par_type LyXText::undoSpan(par_type pit)
 }
 
 
-par_type LyXText::setLayout(par_type start, par_type end, string const & layout)
+pit_type LyXText::setLayout(pit_type start, pit_type end, string const & layout)
 {
        BOOST_ASSERT(start != end);
-       par_type undopit = undoSpan(end - 1);
+       pit_type undopit = undoSpan(end - 1);
        recUndo(start, undopit - 1);
 
        BufferParams const & bufparams = bv()->buffer()->params();
        LyXLayout_ptr const & lyxlayout = bufparams.getLyXTextClass()[layout];
 
-       for (par_type pit = start; pit != end; ++pit) {
+       for (pit_type pit = start; pit != end; ++pit) {
                pars_[pit].applyLayout(lyxlayout);
                makeFontEntriesLayoutSpecific(bufparams, pars_[pit]);
                if (lyxlayout->margintype == MARGIN_MANUAL)
@@ -280,44 +310,32 @@ void LyXText::setLayout(LCursor & cur, string const & layout)
 {
        BOOST_ASSERT(this == cur.text());
        // special handling of new environment insets
-       BufferParams const & params = bv()->buffer()->params();
+       BufferView & bv = cur.bv();
+       BufferParams const & params = bv.buffer()->params();
        LyXLayout_ptr const & lyxlayout = params.getLyXTextClass()[layout];
        if (lyxlayout->is_environment) {
                // move everything in a new environment inset
-               lyxerr << "setting layout " << layout << endl;
-               bv()->owner()->dispatch(FuncRequest(LFUN_HOME));
-               bv()->owner()->dispatch(FuncRequest(LFUN_ENDSEL));
-               bv()->owner()->dispatch(FuncRequest(LFUN_CUT));
+               lyxerr[Debug::DEBUG] << "setting layout " << layout << endl;
+               bv.owner()->dispatch(FuncRequest(LFUN_HOME));
+               bv.owner()->dispatch(FuncRequest(LFUN_ENDSEL));
+               bv.owner()->dispatch(FuncRequest(LFUN_CUT));
                InsetBase * inset = new InsetEnvironment(params, layout);
                insertInset(cur, inset);
                //inset->edit(cur, true);
-               //bv()->owner()->dispatch(FuncRequest(LFUN_PASTE));
+               //bv.owner()->dispatch(FuncRequest(LFUN_PASTE));
                return;
        }
 
-       par_type start = cur.selBegin().par();
-       par_type end = cur.selEnd().par() + 1;
-       par_type endpit = setLayout(start, end, layout);
-       redoParagraphs(start, endpit);
-       updateCounters();
+       pit_type start = cur.selBegin().pit();
+       pit_type end = cur.selEnd().pit() + 1;
+       setLayout(start, end, layout);
+       updateCounters(cur.buffer());
 }
 
 
 namespace {
 
 
-void getSelectionSpan(LCursor & cur, par_type & beg, par_type & end)
-{
-       if (!cur.selection()) {
-               beg = cur.par();
-               end = cur.par() + 1;
-       } else {
-               beg = cur.selBegin().par();
-               end = cur.selEnd().par() + 1;
-       }
-}
-
-
 bool changeDepthAllowed(LyXText::DEPTH_CHANGE type,
        Paragraph const & par, int max_depth)
 {
@@ -338,13 +356,11 @@ bool changeDepthAllowed(LyXText::DEPTH_CHANGE type,
 bool LyXText::changeDepthAllowed(LCursor & cur, DEPTH_CHANGE type) const
 {
        BOOST_ASSERT(this == cur.text());
-       par_type beg, end;
-       getSelectionSpan(cur, beg, end);
-       int max_depth = 0;
-       if (beg != 0)
-               max_depth = pars_[beg - 1].getMaxDepthAfter();
+       pit_type const beg = cur.selBegin().pit();
+       pit_type const end = cur.selEnd().pit() + 1;
+       int max_depth = (beg != 0 ? pars_[beg - 1].getMaxDepthAfter() : 0);
 
-       for (par_type pit = beg; pit != end; ++pit) {
+       for (pit_type pit = beg; pit != end; ++pit) {
                if (::changeDepthAllowed(type, pars_[pit], max_depth))
                        return true;
                max_depth = pars_[pit].getMaxDepthAfter();
@@ -356,27 +372,25 @@ bool LyXText::changeDepthAllowed(LCursor & cur, DEPTH_CHANGE type) const
 void LyXText::changeDepth(LCursor & cur, DEPTH_CHANGE type)
 {
        BOOST_ASSERT(this == cur.text());
-       par_type beg, end;
-       getSelectionSpan(cur, beg, end);
+       pit_type const beg = cur.selBegin().pit();
+       pit_type const end = cur.selEnd().pit() + 1;
        recordUndoSelection(cur);
+       int max_depth = (beg != 0 ? pars_[beg - 1].getMaxDepthAfter() : 0);
 
-       int max_depth = 0;
-       if (beg != 0)
-               max_depth = pars_[beg - 1].getMaxDepthAfter();
-
-       for (par_type pit = beg; pit != end; ++pit) {
-               if (::changeDepthAllowed(type, pars_[pit], max_depth)) {
-                       int const depth = pars_[pit].params().depth();
+       for (pit_type pit = beg; pit != end; ++pit) {
+               Paragraph & par = pars_[pit];
+               if (::changeDepthAllowed(type, par, max_depth)) {
+                       int const depth = par.params().depth();
                        if (type == INC_DEPTH)
-                               pars_[pit].params().depth(depth + 1);
+                               par.params().depth(depth + 1);
                        else
-                               pars_[pit].params().depth(depth - 1);
+                               par.params().depth(depth - 1);
                }
-               max_depth = pars_[pit].getMaxDepthAfter();
+               max_depth = par.getMaxDepthAfter();
        }
        // this handles the counter labels, and also fixes up
        // depth values for follow-on (child) paragraphs
-       updateCounters();
+       updateCounters(cur.buffer());
 }
 
 
@@ -388,15 +402,15 @@ void LyXText::setFont(LCursor & cur, LyXFont const & font, bool toggleall)
        if (!cur.selection()) {
                // Determine basis font
                LyXFont layoutfont;
-               par_type pit = cur.par();
+               pit_type pit = cur.pit();
                if (cur.pos() < pars_[pit].beginOfBody())
-                       layoutfont = getLabelFont(pit);
+                       layoutfont = getLabelFont(pars_[pit]);
                else
                        layoutfont = getLayoutFont(pit);
 
                // Update current font
                real_current_font.update(font,
-                                        bv()->buffer()->params().language,
+                                        cur.buffer().params().language,
                                         toggleall);
 
                // Reduce to implicit settings
@@ -411,21 +425,22 @@ void LyXText::setFont(LCursor & cur, LyXFont const & font, bool toggleall)
        // Ok, we have a selection.
        recordUndoSelection(cur);
 
-       par_type const beg = cur.selBegin().par();
-       par_type const end = cur.selEnd().par();
+       DocIterator dit = cur.selectionBegin();
+       DocIterator ditend = cur.selectionEnd();
 
-       DocIterator pos = cur.selectionBegin();
-       DocIterator posend = cur.selectionEnd();
+       BufferParams const & params = cur.buffer().params();
 
-       BufferParams const & params = bv()->buffer()->params();
-
-       for (; pos != posend; pos.forwardChar()) {
-               LyXFont f = getFont(pos.par(), pos.pos());
-               f.update(font, params.language, toggleall);
-               setCharFont(pos.par(), pos.pos(), f);
+       // Don't use forwardChar here as ditend might have
+       // pos() == lastpos() and forwardChar would miss it.
+       // Can't use forwardPos either as this descends into
+       // nested insets. 
+       for (; dit != ditend; dit.forwardPosNoDescend()) {
+               if (dit.pos() != dit.lastpos()) {
+                       LyXFont f = getFont(dit.paragraph(), dit.pos());
+                       f.update(font, params.language, toggleall);
+                       setCharFont(dit.pit(), dit.pos(), f);
+               }
        }
-
-       redoParagraphs(beg, end + 1);
 }
 
 
@@ -435,7 +450,7 @@ void LyXText::setFont(LCursor & cur, LyXFont const & font, bool toggleall)
 void LyXText::cursorHome(LCursor & cur)
 {
        BOOST_ASSERT(this == cur.text());
-       setCursor(cur, cur.par(), cur.textRow().pos());
+       setCursor(cur, cur.pit(), cur.textRow().pos());
 }
 
 
@@ -444,8 +459,9 @@ void LyXText::cursorEnd(LCursor & cur)
        BOOST_ASSERT(this == cur.text());
        // if not on the last row of the par, put the cursor before
        // the final space
+// FIXME: does this final space exist?
        pos_type const end = cur.textRow().endpos();
-       setCursor(cur, cur.par(), end == cur.lastpos() ? end : end - 1);
+       setCursor(cur, cur.pit(), end == cur.lastpos() ? end : end - 1);
 }
 
 
@@ -459,7 +475,7 @@ void LyXText::cursorTop(LCursor & cur)
 void LyXText::cursorBottom(LCursor & cur)
 {
        BOOST_ASSERT(this == cur.text());
-       setCursor(cur, cur.lastpar(), boost::prior(paragraphs().end())->size());
+       setCursor(cur, cur.lastpit(), boost::prior(paragraphs().end())->size());
 }
 
 
@@ -509,7 +525,7 @@ string LyXText::getStringToIndex(LCursor & cur)
        string idxstring;
        if (!cur.selection())
                cur.message(_("Nothing to index!"));
-       else if (cur.selBegin().par() != cur.selEnd().par())
+       else if (cur.selBegin().pit() != cur.selEnd().pit())
                cur.message(_("Cannot index more than one paragraph!"));
        else
                idxstring = cur.selectionAsString(false);
@@ -532,10 +548,10 @@ void LyXText::setParagraph(LCursor & cur,
 {
        BOOST_ASSERT(cur.text());
        // make sure that the depth behind the selection are restored, too
-       par_type undopit = undoSpan(cur.selEnd().par());
-       recUndo(cur.selBegin().par(), undopit - 1);
+       pit_type undopit = undoSpan(cur.selEnd().pit());
+       recUndo(cur.selBegin().pit(), undopit - 1);
 
-       for (par_type pit = cur.selBegin().par(), end = cur.selEnd().par();
+       for (pit_type pit = cur.selBegin().pit(), end = cur.selEnd().pit();
                        pit <= end; ++pit) {
                Paragraph & par = pars_[pit];
                ParagraphParameters & params = par.params();
@@ -555,322 +571,32 @@ void LyXText::setParagraph(LCursor & cur,
                par.setLabelWidthString(labelwidthstring);
                params.noindent(noindent);
        }
-
-       redoParagraphs(cur.selBegin().par(), undopit);
-}
-
-
-string expandLabel(LyXTextClass const & textclass,
-       LyXLayout_ptr const & layout, bool appendix)
-{
-       string fmt = appendix ?
-               layout->labelstring_appendix() : layout->labelstring();
-
-       // handle 'inherited level parts' in 'fmt',
-       // i.e. the stuff between '@' in   '@Section@.\arabic{subsection}'
-       size_t const i = fmt.find('@', 0);
-       if (i != string::npos) {
-               size_t const j = fmt.find('@', i + 1);
-               if (j != string::npos) {
-                       string parent(fmt, i + 1, j - i - 1);
-                       string label = expandLabel(textclass, textclass[parent], appendix);
-                       fmt = string(fmt, 0, i) + label + string(fmt, j + 1, string::npos);
-               }
-       }
-
-       return textclass.counters().counterLabel(fmt);
-}
-
-
-namespace {
-
-void incrementItemDepth(ParagraphList & pars, par_type pit, par_type first_pit)
-{
-       int const cur_labeltype = pars[pit].layout()->labeltype;
-
-       if (cur_labeltype != LABEL_ENUMERATE && cur_labeltype != LABEL_ITEMIZE)
-               return;
-
-       int const cur_depth = pars[pit].getDepth();
-
-       par_type prev_pit = pit - 1;
-       while (true) {
-               int const prev_depth = pars[prev_pit].getDepth();
-               int const prev_labeltype = pars[prev_pit].layout()->labeltype;
-               if (prev_depth == 0 && cur_depth > 0) {
-                       if (prev_labeltype == cur_labeltype) {
-                               pars[pit].itemdepth = pars[prev_pit].itemdepth + 1;
-                       }
-                       break;
-               } else if (prev_depth < cur_depth) {
-                       if (prev_labeltype == cur_labeltype) {
-                               pars[pit].itemdepth = pars[prev_pit].itemdepth + 1;
-                               break;
-                       }
-               } else if (prev_depth == cur_depth) {
-                       if (prev_labeltype == cur_labeltype) {
-                               pars[pit].itemdepth = pars[prev_pit].itemdepth;
-                               break;
-                       }
-               }
-               if (prev_pit == first_pit)
-                       break;
-
-               --prev_pit;
-       }
-}
-
-
-void resetEnumCounterIfNeeded(ParagraphList & pars, par_type pit,
-       par_type firstpit, Counters & counters)
-{
-       if (pit == firstpit)
-               return;
-
-       int const cur_depth = pars[pit].getDepth();
-       par_type prev_pit = pit - 1;
-       while (true) {
-               int const prev_depth = pars[prev_pit].getDepth();
-               int const prev_labeltype = pars[prev_pit].layout()->labeltype;
-               if (prev_depth <= cur_depth) {
-                       if (prev_labeltype != LABEL_ENUMERATE) {
-                               switch (pars[pit].itemdepth) {
-                               case 0:
-                                       counters.reset("enumi");
-                               case 1:
-                                       counters.reset("enumii");
-                               case 2:
-                                       counters.reset("enumiii");
-                               case 3:
-                                       counters.reset("enumiv");
-                               }
-                       }
-                       break;
-               }
-
-               if (prev_pit == firstpit)
-                       break;
-
-               --prev_pit;
-       }
-}
-
-} // anon namespace
-
-
-// set the counter of a paragraph. This includes the labels
-void LyXText::setCounter(Buffer const & buf, par_type pit)
-{
-       BufferParams const & bufparams = buf.params();
-       LyXTextClass const & textclass = bufparams.getLyXTextClass();
-       LyXLayout_ptr const & layout = pars_[pit].layout();
-       par_type first_pit = 0;
-       Counters & counters = textclass.counters();
-
-       // Always reset
-       pars_[pit].itemdepth = 0;
-
-       if (pit == first_pit) {
-               pars_[pit].params().appendix(pars_[pit].params().startOfAppendix());
-       } else {
-               pars_[pit].params().appendix(pars_[pit - 1].params().appendix());
-               if (!pars_[pit].params().appendix() &&
-                   pars_[pit].params().startOfAppendix()) {
-                       pars_[pit].params().appendix(true);
-                       textclass.counters().reset();
-               }
-
-               // Maybe we have to increment the item depth.
-               incrementItemDepth(pars_, pit, first_pit);
-       }
-
-       // erase what was there before
-       pars_[pit].params().labelString(string());
-
-       if (layout->margintype == MARGIN_MANUAL) {
-               if (pars_[pit].params().labelWidthString().empty())
-                       pars_[pit].setLabelWidthString(layout->labelstring());
-       } else {
-               pars_[pit].setLabelWidthString(string());
-       }
-
-       // is it a layout that has an automatic label?
-       if (layout->labeltype == LABEL_COUNTER) {
-               BufferParams const & bufparams = buf.params();
-               LyXTextClass const & textclass = bufparams.getLyXTextClass();
-               counters.step(layout->counter);
-               string label = expandLabel(textclass, layout, pars_[pit].params().appendix());
-               pars_[pit].params().labelString(label);
-       } else if (layout->labeltype == LABEL_ITEMIZE) {
-               // At some point of time we should do something more
-               // clever here, like:
-               //   pars_[pit].params().labelString(
-               //    bufparams.user_defined_bullet(pars_[pit].itemdepth).getText());
-               // for now, use a simple hardcoded label
-               string itemlabel;
-               switch (pars_[pit].itemdepth) {
-               case 0:
-                       itemlabel = "*";
-                       break;
-               case 1:
-                       itemlabel = "-";
-                       break;
-               case 2:
-                       itemlabel = "@";
-                       break;
-               case 3:
-                       itemlabel = "·";
-                       break;
-               }
-
-               pars_[pit].params().labelString(itemlabel);
-       } else if (layout->labeltype == LABEL_ENUMERATE) {
-               // Maybe we have to reset the enumeration counter.
-               resetEnumCounterIfNeeded(pars_, pit, first_pit, counters);
-
-               // FIXME
-               // Yes I know this is a really, really! bad solution
-               // (Lgb)
-               string enumcounter = "enum";
-
-               switch (pars_[pit].itemdepth) {
-               case 2:
-                       enumcounter += 'i';
-               case 1:
-                       enumcounter += 'i';
-               case 0:
-                       enumcounter += 'i';
-                       break;
-               case 3:
-                       enumcounter += "iv";
-                       break;
-               default:
-                       // not a valid enumdepth...
-                       break;
-               }
-
-               counters.step(enumcounter);
-
-               pars_[pit].params().labelString(counters.enumLabel(enumcounter));
-       } else if (layout->labeltype == LABEL_BIBLIO) {// ale970302
-               counters.step("bibitem");
-               int number = counters.value("bibitem");
-               if (pars_[pit].bibitem()) {
-                       pars_[pit].bibitem()->setCounter(number);
-                       pars_[pit].params().labelString(layout->labelstring());
-               }
-               // In biblio should't be following counters but...
-       } else {
-               string s = buf.B_(layout->labelstring());
-
-               // the caption hack:
-               if (layout->labeltype == LABEL_SENSITIVE) {
-                       par_type end = paragraphs().size();
-                       par_type tmppit = pit;
-                       InsetBase * in = 0;
-                       bool isOK = false;
-                       while (tmppit != end && pars_[tmppit].inInset()
-                              // the single '=' is intended below
-                              && (in = pars_[tmppit].inInset()))
-                       {
-                               if (in->lyxCode() == InsetBase::FLOAT_CODE ||
-                                   in->lyxCode() == InsetBase::WRAP_CODE) {
-                                       isOK = true;
-                                       break;
-                               } else {
-                                       Paragraph const * owner = &ownerPar(buf, in);
-                                       tmppit = first_pit;
-                                       for ( ; tmppit != end; ++tmppit)
-                                               if (&pars_[tmppit] == owner)
-                                                       break;
-                               }
-                       }
-
-                       if (isOK) {
-                               string type;
-
-                               if (in->lyxCode() == InsetBase::FLOAT_CODE)
-                                       type = static_cast<InsetFloat*>(in)->params().type;
-                               else if (in->lyxCode() == InsetBase::WRAP_CODE)
-                                       type = static_cast<InsetWrap*>(in)->params().type;
-                               else
-                                       BOOST_ASSERT(false);
-
-                               Floating const & fl = textclass.floats().getType(type);
-
-                               counters.step(fl.type());
-
-                               // Doesn't work... yet.
-                               s = bformat(_("%1$s #:"), buf.B_(fl.name()));
-                       } else {
-                               // par->SetLayout(0);
-                               // s = layout->labelstring;
-                               s = _("Senseless: ");
-                       }
-               }
-               pars_[pit].params().labelString(s);
-
-       }
-}
-
-
-// Updates all counters.
-void LyXText::updateCounters()
-{
-       // start over
-       bv()->buffer()->params().getLyXTextClass().counters().reset();
-
-       bool update_pos = false;
-
-       par_type end = paragraphs().size();
-       for (par_type pit = 0; pit != end; ++pit) {
-               string const oldLabel = pars_[pit].params().labelString();
-               size_t maxdepth = 0;
-               if (pit != 0)
-                       maxdepth = pars_[pit - 1].getMaxDepthAfter();
-
-               if (pars_[pit].params().depth() > maxdepth)
-                       pars_[pit].params().depth(maxdepth);
-
-               // setCounter can potentially change the labelString.
-               setCounter(*bv()->buffer(), pit);
-               string const & newLabel = pars_[pit].params().labelString();
-               if (oldLabel != newLabel) {
-                       //lyxerr << "changing labels: old: " << oldLabel << " new: "
-                       //      << newLabel << endl;
-                       redoParagraphInternal(pit);
-                       update_pos = true;
-               }
-       }
-       if (update_pos)
-               updateParPositions();
 }
 
 
+// this really should just insert the inset and not move the cursor.
 void LyXText::insertInset(LCursor & cur, InsetBase * inset)
 {
        BOOST_ASSERT(this == cur.text());
        BOOST_ASSERT(inset);
        cur.paragraph().insertInset(cur.pos(), inset);
-       redoParagraph(cur);
 }
 
 
 // needed to insert the selection
 void LyXText::insertStringAsLines(LCursor & cur, string const & str)
 {
-       par_type pit = cur.par();
-       par_type endpit = cur.par() + 1;
+       pit_type pit = cur.pit();
        pos_type pos = cur.pos();
        recordUndo(cur);
 
        // only to be sure, should not be neccessary
        cur.clearSelection();
-       bv()->buffer()->insertStringAsLines(pars_, pit, pos, current_font, str);
+       cur.buffer().insertStringAsLines(pars_, pit, pos, current_font, str,
+               autoBreakRows_);
 
-       redoParagraphs(cur.par(), endpit);
        cur.resetAnchor();
-       setCursor(cur, cur.par(), pos);
+       setCursor(cur, cur.pit(), pos);
        cur.setSelection();
 }
 
@@ -902,7 +628,7 @@ void LyXText::insertStringAsParagraphs(LCursor & cur, string const & str)
 }
 
 
-bool LyXText::setCursor(LCursor & cur, par_type par, pos_type pos,
+bool LyXText::setCursor(LCursor & cur, pit_type par, pos_type pos,
        bool setfont, bool boundary)
 {
        LCursor old = cur;
@@ -911,23 +637,16 @@ bool LyXText::setCursor(LCursor & cur, par_type par, pos_type pos,
 }
 
 
-void LyXText::setCursor(CursorSlice & cur, par_type par,
+void LyXText::setCursor(CursorSlice & cur, pit_type par,
        pos_type pos, bool boundary)
 {
        BOOST_ASSERT(par != int(paragraphs().size()));
-
-       cur.par() = par;
+       cur.pit() = par;
        cur.pos() = pos;
        cur.boundary() = boundary;
 
-       // no rows, no fun...
-       if (paragraphs().begin()->rows.empty())
-               return;
-
        // now some strict checking
        Paragraph & para = getPar(par);
-       Row const & row = *para.getRow(pos);
-       pos_type const end = row.endpos();
 
        // None of these should happen, but we're scaredy-cats
        if (pos < 0) {
@@ -938,24 +657,6 @@ void LyXText::setCursor(CursorSlice & cur, par_type par,
        if (pos > para.size()) {
                lyxerr << "dont like 1, pos: " << pos
                       << " size: " << para.size()
-                      << " row.pos():" << row.pos()
-                      << " par: " << par << endl;
-               BOOST_ASSERT(false);
-       }
-
-       if (pos > end) {
-               lyxerr << "dont like 2, pos: " << pos
-                      << " size: " << para.size()
-                      << " row.pos():" << row.pos()
-                      << " par: " << par << endl;
-               // This shouldn't happen.
-               BOOST_ASSERT(false);
-       }
-
-       if (pos < row.pos()) {
-               lyxerr << "dont like 3 please report pos:" << pos
-                      << " size: " << para.size()
-                      << " row.pos():" << row.pos()
                       << " par: " << par << endl;
                BOOST_ASSERT(false);
        }
@@ -963,10 +664,10 @@ void LyXText::setCursor(CursorSlice & cur, par_type par,
 
 
 void LyXText::setCursorIntern(LCursor & cur,
-       par_type par, pos_type pos, bool setfont, bool boundary)
+       pit_type par, pos_type pos, bool setfont, bool boundary)
 {
        setCursor(cur.top(), par, pos, boundary);
-       cur.x_target() = cursorX(cur.top());
+       cur.setTargetX();
        if (setfont)
                setCurrentFont(cur);
 }
@@ -976,7 +677,7 @@ void LyXText::setCurrentFont(LCursor & cur)
 {
        BOOST_ASSERT(this == cur.text());
        pos_type pos = cur.pos();
-       par_type pit = cur.par();
+       Paragraph & par = cur.paragraph();
 
        if (cur.boundary() && pos > 0)
                --pos;
@@ -985,7 +686,7 @@ void LyXText::setCurrentFont(LCursor & cur)
                if (pos == cur.lastpos())
                        --pos;
                else // potentional bug... BUG (Lgb)
-                       if (pars_[pit].isSeparator(pos)) {
+                       if (par.isSeparator(pos)) {
                                if (pos > cur.textRow().pos() &&
                                    bidi.level(pos) % 2 ==
                                    bidi.level(pos - 1) % 2)
@@ -995,14 +696,14 @@ void LyXText::setCurrentFont(LCursor & cur)
                        }
        }
 
-       BufferParams const & bufparams = bv()->buffer()->params();
-       current_font = pars_[pit].getFontSettings(bufparams, pos);
-       real_current_font = getFont(pit, pos);
+       BufferParams const & bufparams = cur.buffer().params();
+       current_font = par.getFontSettings(bufparams, pos);
+       real_current_font = getFont(par, pos);
 
        if (cur.pos() == cur.lastpos()
-           && bidi.isBoundary(*bv()->buffer(), pars_[pit], cur.pos())
+           && bidi.isBoundary(cur.buffer(), par, cur.pos())
            && !cur.boundary()) {
-               Language const * lang = pars_[pit].getParLanguage(bufparams);
+               Language const * lang = par.getParLanguage(bufparams);
                current_font.setLanguage(lang);
                current_font.setNumber(LyXFont::OFF);
                real_current_font.setLanguage(lang);
@@ -1014,31 +715,33 @@ void LyXText::setCurrentFont(LCursor & cur)
 // x is an absolute screen coord
 // returns the column near the specified x-coordinate of the row
 // x is set to the real beginning of this column
-pos_type LyXText::getColumnNearX(par_type pit,
+pos_type LyXText::getColumnNearX(pit_type const pit,
        Row const & row, int & x, bool & boundary) const
 {
-       x -= xo_;
+       int const xo = theCoords.get(this, pit).x_;
+       x -= xo;
        RowMetrics const r = computeRowMetrics(pit, row);
+       Paragraph const & par = pars_[pit];
 
        pos_type vc = row.pos();
        pos_type end = row.endpos();
        pos_type c = 0;
-       LyXLayout_ptr const & layout = pars_[pit].layout();
+       LyXLayout_ptr const & layout = par.layout();
 
        bool left_side = false;
 
-       pos_type body_pos = pars_[pit].beginOfBody();
+       pos_type body_pos = par.beginOfBody();
 
        double tmpx = r.x;
        double last_tmpx = tmpx;
 
        if (body_pos > 0 &&
-           (body_pos > end || !pars_[pit].isLineSeparator(body_pos - 1)))
+           (body_pos > end || !par.isLineSeparator(body_pos - 1)))
                body_pos = 0;
 
        // check for empty row
        if (vc == end) {
-               x = int(tmpx) + xo_;
+               x = int(tmpx) + xo;
                return 0;
        }
 
@@ -1047,23 +750,23 @@ pos_type LyXText::getColumnNearX(par_type pit,
                last_tmpx = tmpx;
                if (body_pos > 0 && c == body_pos - 1) {
                        tmpx += r.label_hfill +
-                               font_metrics::width(layout->labelsep, getLabelFont(pit));
-                       if (pars_[pit].isLineSeparator(body_pos - 1))
-                               tmpx -= singleWidth(pit, body_pos - 1);
+                               font_metrics::width(layout->labelsep, getLabelFont(par));
+                       if (par.isLineSeparator(body_pos - 1))
+                               tmpx -= singleWidth(par, body_pos - 1);
                }
 
-               if (hfillExpansion(pars_[pit], row, c)) {
-                       tmpx += singleWidth(pit, c);
+               if (hfillExpansion(par, row, c)) {
+                       tmpx += singleWidth(par, c);
                        if (c >= body_pos)
                                tmpx += r.hfill;
                        else
                                tmpx += r.label_hfill;
-               } else if (pars_[pit].isSeparator(c)) {
-                       tmpx += singleWidth(pit, c);
+               } else if (par.isSeparator(c)) {
+                       tmpx += singleWidth(par, c);
                        if (c >= body_pos)
                                tmpx += r.separator;
                } else {
-                       tmpx += singleWidth(pit, c);
+                       tmpx += singleWidth(par, c);
                }
                ++vc;
        }
@@ -1078,11 +781,11 @@ pos_type LyXText::getColumnNearX(par_type pit,
        boundary = false;
        // This (rtl_support test) is not needed, but gives
        // some speedup if rtl_support == false
-       bool const lastrow = lyxrc.rtl_support && row.endpos() == pars_[pit].size();
+       bool const lastrow = lyxrc.rtl_support && row.endpos() == par.size();
 
        // If lastrow is false, we don't need to compute
        // the value of rtl.
-       bool const rtl = lastrow ? isRTL(pars_[pit]) : false;
+       bool const rtl = lastrow ? isRTL(par) : false;
        if (lastrow &&
                 ((rtl  &&  left_side && vc == row.pos() && x < tmpx - 5) ||
                  (!rtl && !left_side && vc == end  && x > tmpx + 5)))
@@ -1096,55 +799,95 @@ pos_type LyXText::getColumnNearX(par_type pit,
                bool const rtl = (bidi.level(c) % 2 == 1);
                if (left_side == rtl) {
                        ++c;
-                       boundary = bidi.isBoundary(*bv()->buffer(), pars_[pit], c);
+                       boundary = bidi.isBoundary(*bv()->buffer(), par, c);
                }
        }
 
-       if (row.pos() < end && c >= end && pars_[pit].isNewline(end - 1)) {
+       if (row.pos() < end && c >= end && par.isNewline(end - 1)) {
                if (bidi.level(end -1) % 2 == 0)
-                       tmpx -= singleWidth(pit, end - 1);
+                       tmpx -= singleWidth(par, end - 1);
                else
-                       tmpx += singleWidth(pit, end - 1);
+                       tmpx += singleWidth(par, end - 1);
                c = end - 1;
        }
 
-       x = int(tmpx) + xo_;
+       if (row.pos() < end && c >= end 
+           && par.isInset(end) && par.getInset(end)->display()) {
+               c = end - 1;
+       }
+
+       x = int(tmpx) + xo;
        return c - row.pos();
 }
 
 
-// x,y are absolute coordinates
-void LyXText::setCursorFromCoordinates(LCursor & cur, int x, int y)
+// y is screen coordinate
+pit_type LyXText::getPitNearY(int y) const
 {
-       x -= xo_;
-       y -= yo_;
-       par_type pit;
-       Row const & row = *getRowNearY(y, pit);
-       lyxerr << "setCursorFromCoordinates:: hit row at: " << row.pos() << endl;
-       bool bound = false;
-       int xx = x + xo_; // getRowNearX get absolute x coords
-       pos_type const pos = row.pos() + getColumnNearX(pit, row, xx, bound);
-       setCursor(cur, pit, pos, true, bound);
+       BOOST_ASSERT(!paragraphs().empty());
+       BOOST_ASSERT(theCoords.getParPos().find(this) != theCoords.getParPos().end());
+       CoordCache::InnerParPosCache const & cc = theCoords.getParPos().find(this)->second;
+       lyxerr << "LyXText::getPitNearY: y: " << y << " cache size: "
+               << cc.size() << endl;
+
+       // look for highest numbered paragraph with y coordinate less than given y
+       pit_type pit = 0;
+       int yy = -1;
+       CoordCache::InnerParPosCache::const_iterator it = cc.begin();
+       CoordCache::InnerParPosCache::const_iterator et = cc.end();
+       for (; it != et; ++it) {
+               lyxerr << "  examining: pit: " << it->first << " y: "
+                       << it->second.y_ << endl;
+               if (it->first >= pit && int(it->second.y_) - int(pars_[it->first].ascent()) <= y) {
+                       pit = it->first;
+                       yy = it->second.y_;
+               }
+       }
+
+       lyxerr << " found best y: " << yy << " for pit: " << pit << endl;
+       return pit;
+}
+
+
+Row const & LyXText::getRowNearY(int y, pit_type pit) const
+{
+       Paragraph const & par = pars_[pit];
+       int yy = theCoords.get(this, pit).y_ - par.ascent();
+       BOOST_ASSERT(!par.rows().empty());
+       RowList::const_iterator rit = par.rows().begin();
+       RowList::const_iterator const rlast = boost::prior(par.rows().end());
+       for (; rit != rlast; yy += rit->height(), ++rit)
+               if (yy + rit->height() > y)
+                       break;
+       return *rit;
 }
 
 
 // x,y are absolute screen coordinates
-InsetBase * LyXText::editXY(LCursor & cur, int x, int y)
+// sets cursor recursively descending into nested editable insets
+InsetBase * LyXText::editXY(LCursor & cur, int x, int y) const
 {
-       par_type pit;
-       Row const & row = *getRowNearY(y - yo_, pit);
+       pit_type pit = getPitNearY(y);
+       BOOST_ASSERT(pit != -1);
+       Row const & row = getRowNearY(y, pit);
        bool bound = false;
 
        int xx = x; // is modified by getColumnNearX
        pos_type const pos = row.pos() + getColumnNearX(pit, row, xx, bound);
-       cur.par() = pit;
+       cur.pit() = pit;
        cur.pos() = pos;
        cur.boundary() = bound;
+       cur.x_target() = x;
 
        // try to descend into nested insets
        InsetBase * inset = checkInsetHit(x, y);
-       if (!inset)
+       lyxerr << "inset " << inset << " hit at x: " << x << " y: " << y << endl;
+       if (!inset) {
+               // Either we deconst editXY or better we move current_font
+               // and real_current_font to LCursor
+               const_cast<LyXText *>(this)->setCurrentFont(cur);
                return 0;
+       }
 
        // This should be just before or just behind the
        // cursor position set above.
@@ -1154,7 +897,10 @@ InsetBase * LyXText::editXY(LCursor & cur, int x, int y)
        // this inset.
        if (inset == pars_[pit].getInset(pos - 1))
                --cur.pos();
-       return inset->editXY(cur, x, y);
+       inset = inset->editXY(cur, x, y);
+       if (cur.top().text() == this)
+               const_cast<LyXText *>(this)->setCurrentFont(cur);
+       return inset;
 }
 
 
@@ -1172,93 +918,155 @@ bool LyXText::checkAndActivateInset(LCursor & cur, bool front)
 }
 
 
-void LyXText::cursorLeft(LCursor & cur)
+bool LyXText::cursorLeft(LCursor & cur)
 {
        if (cur.pos() != 0) {
                bool boundary = cur.boundary();
-               setCursor(cur, cur.par(), cur.pos() - 1, true, false);
+               bool updateNeeded = setCursor(cur, cur.pit(), cur.pos() - 1, true, false);
                if (!checkAndActivateInset(cur, false)) {
                        if (false && !boundary &&
-                                       bidi.isBoundary(*bv()->buffer(), cur.paragraph(), cur.pos() + 1))
-                               setCursor(cur, cur.par(), cur.pos() + 1, true, true);
-                       return;
+                                       bidi.isBoundary(cur.buffer(), cur.paragraph(), cur.pos() + 1))
+                               updateNeeded |=
+                                       setCursor(cur, cur.pit(), cur.pos() + 1, true, true);
                }
+               return updateNeeded;
        }
 
-       if (cur.par() != 0) {
-               // steps into the paragraph above
-               setCursor(cur, cur.par() - 1, getPar(cur.par() - 1).size());
+       if (cur.pit() != 0) {
+               // Steps into the paragraph above
+               return setCursor(cur, cur.pit() - 1, getPar(cur.pit() - 1).size());
        }
+       return false;
 }
 
 
-void LyXText::cursorRight(LCursor & cur)
+bool LyXText::cursorRight(LCursor & cur)
 {
        if (false && cur.boundary()) {
-               setCursor(cur, cur.par(), cur.pos(), true, false);
-               return;
+               return setCursor(cur, cur.pit(), cur.pos(), true, false);
        }
 
        if (cur.pos() != cur.lastpos()) {
+               bool updateNeeded = false;
                if (!checkAndActivateInset(cur, true)) {
-                       setCursor(cur, cur.par(), cur.pos() + 1, true, false);
-                       if (false && bidi.isBoundary(*bv()->buffer(), cur.paragraph(),
+                       updateNeeded |= setCursor(cur, cur.pit(), cur.pos() + 1, true, false);
+                       if (false && bidi.isBoundary(cur.buffer(), cur.paragraph(),
                                                         cur.pos()))
-                               setCursor(cur, cur.par(), cur.pos(), true, true);
+                               updateNeeded |= setCursor(cur, cur.pit(), cur.pos(), true, true);
                }
-               return;
+               return updateNeeded;
        }
 
-       if (cur.par() != cur.lastpar())
-               setCursor(cur, cur.par() + 1, 0);
+       if (cur.pit() != cur.lastpit())
+               return setCursor(cur, cur.pit() + 1, 0);
+       return false;
 }
 
 
-void LyXText::cursorUp(LCursor & cur)
+bool LyXText::cursorUp(LCursor & cur)
 {
-       Row const & row = cur.textRow();
-       int x = cur.x_target();
-       int y = cursorY(cur.top()) - row.baseline() - 1;
-       setCursorFromCoordinates(cur, x, y);
+       Paragraph const & par = cur.paragraph();
+       int const row = par.pos2row(cur.pos());
+       int const x = cur.targetX();
 
        if (!cur.selection()) {
-               InsetBase * inset_hit = checkInsetHit(cur.x_target(), y);
-               if (inset_hit && isHighlyEditableInset(inset_hit))
-                       inset_hit->editXY(cur, cur.x_target(), y);
+               int const y = bv_funcs::getPos(cur).y_;
+               LCursor old = cur;
+               editXY(cur, x, y - par.rows()[row].ascent() - 1);
+
+               // This happens when you move out of an inset.
+               // And to give the DEPM the possibility of doing
+               // something we must provide it with two different
+               // cursors. (Lgb)
+               LCursor dummy = cur;
+               if (dummy == old)
+                       ++dummy.pos();
+
+               return deleteEmptyParagraphMechanism(dummy, old);
        }
+
+       bool updateNeeded = false;
+
+       if (row > 0) {
+               updateNeeded |= setCursor(cur, cur.pit(),
+                                         x2pos(cur.pit(), row - 1, x));
+       } else if (cur.pit() > 0) {
+               --cur.pit();
+               //cannot use 'par' now
+               updateNeeded |= setCursor(cur, cur.pit(), x2pos(cur.pit(), cur.paragraph().rows().size() - 1, x));
+       }
+
+       cur.x_target() = x;
+
+       return updateNeeded;
 }
 
 
-void LyXText::cursorDown(LCursor & cur)
+bool LyXText::cursorDown(LCursor & cur)
 {
-       Row const & row = cur.textRow();
-       int x = cur.x_target();
-       int y = cursorY(cur.top()) - row.baseline() + row.height() + 1;
-       setCursorFromCoordinates(cur, x, y);
+       Paragraph const & par = cur.paragraph();
+       int const row = par.pos2row(cur.pos());
+       int const x = cur.targetX();
 
        if (!cur.selection()) {
-               InsetBase * inset_hit = checkInsetHit(cur.x_target(), y);
-               if (inset_hit && isHighlyEditableInset(inset_hit))
-                       inset_hit->editXY(cur, cur.x_target(), y);
+               int const y = bv_funcs::getPos(cur).y_;
+               LCursor old = cur;
+               editXY(cur, x, y + par.rows()[row].descent() + 1);
+
+               // This happens when you move out of an inset.
+               // And to give the DEPM the possibility of doing
+               // something we must provide it with two different
+               // cursors. (Lgb)
+               LCursor dummy = cur;
+               if (dummy == old)
+                       ++dummy.pos();
+
+               bool const changed = deleteEmptyParagraphMechanism(dummy, old);
+
+               // Make sure that cur gets back whatever happened to dummy(Lgb)
+               if (changed)
+                       cur = dummy;
+
+               return changed;
+
        }
+
+       bool updateNeeded = false;
+
+       if (row + 1 < int(par.rows().size())) {
+               updateNeeded |= setCursor(cur, cur.pit(),
+                                         x2pos(cur.pit(), row + 1, x));
+       } else if (cur.pit() + 1 < int(paragraphs().size())) {
+               ++cur.pit();
+               updateNeeded |= setCursor(cur, cur.pit(),
+                                         x2pos(cur.pit(), 0, x));
+       }
+
+       cur.x_target() = x;
+
+       return updateNeeded;
 }
 
 
-void LyXText::cursorUpParagraph(LCursor & cur)
+bool LyXText::cursorUpParagraph(LCursor & cur)
 {
+       bool updated = false;
        if (cur.pos() > 0)
-               setCursor(cur, cur.par(), 0);
-       else if (cur.par() != 0)
-               setCursor(cur, cur.par() - 1, 0);
+               updated = setCursor(cur, cur.pit(), 0);
+       else if (cur.pit() != 0)
+               updated = setCursor(cur, cur.pit() - 1, 0);
+       return updated;
 }
 
 
-void LyXText::cursorDownParagraph(LCursor & cur)
+bool LyXText::cursorDownParagraph(LCursor & cur)
 {
-       if (cur.par() != cur.lastpar())
-               setCursor(cur, cur.par() + 1, 0);
+       bool updated = false;
+       if (cur.pit() != cur.lastpit())
+               updated = setCursor(cur, cur.pit() + 1, 0);
        else
-               setCursor(cur, cur.par(), cur.lastpos());
+               updated = setCursor(cur, cur.pit(), cur.lastpos());
+       return updated;
 }
 
 
@@ -1266,16 +1074,16 @@ void LyXText::cursorDownParagraph(LCursor & cur)
 // position. Called by deleteEmptyParagraphMechanism
 void LyXText::fixCursorAfterDelete(CursorSlice & cur, CursorSlice const & where)
 {
-       // do notheing if cursor is not in the paragraph where the
+       // Do nothing if cursor is not in the paragraph where the
        // deletion occured,
-       if (cur.par() != where.par())
+       if (cur.pit() != where.pit())
                return;
 
-       // if cursor position is after the deletion place update it
+       // If cursor position is after the deletion place update it
        if (cur.pos() > where.pos())
                --cur.pos();
 
-       // check also if we don't want to set the cursor on a spot behind the
+       // Check also if we don't want to set the cursor on a spot behind the
        // pagragraph because we erased the last character.
        if (cur.pos() > cur.lastpos())
                cur.pos() = cur.lastpos();
@@ -1284,13 +1092,12 @@ void LyXText::fixCursorAfterDelete(CursorSlice & cur, CursorSlice const & where)
 
 bool LyXText::deleteEmptyParagraphMechanism(LCursor & cur, LCursor const & old)
 {
-       BOOST_ASSERT(cur.size() == old.size());
        // Would be wrong to delete anything if we have a selection.
        if (cur.selection())
                return false;
 
-       //lyxerr << "DEPM: cur:\n" << cur << "old:\n" << old << endl;
-       Paragraph const & oldpar = pars_[old.par()];
+       //lyxerr[Debug::DEBUG] << "DEPM: cur:\n" << cur << "old:\n" << old << endl;
+       Paragraph const & oldpar = pars_[old.pit()];
 
        // We allow all kinds of "mumbo-jumbo" when freespacing.
        if (oldpar.isFreeSpacing())
@@ -1320,14 +1127,18 @@ bool LyXText::deleteEmptyParagraphMechanism(LCursor & cur, LCursor const & old)
        // MISSING
 
        // If the chars around the old cursor were spaces, delete one of them.
-       if (old.par() != cur.par() || old.pos() != cur.pos()) {
+       if (old.pit() != cur.pit() || old.pos() != cur.pos()) {
 
                // Only if the cursor has really moved.
                if (old.pos() > 0
                    && old.pos() < oldpar.size()
                    && oldpar.isLineSeparator(old.pos())
                    && oldpar.isLineSeparator(old.pos() - 1)) {
-                       pars_[old.par()].erase(old.pos() - 1);
+                       // We need to set the text to Change::INSERTED to
+                       // get it erased properly
+                       pars_[old.pit()].setChange(old.pos() -1,
+                               Change::INSERTED);
+                       pars_[old.pit()].erase(old.pos() - 1);
 #ifdef WITH_WARNINGS
 #warning This will not work anymore when we have multiple views of the same buffer
 // In this case, we will have to correct also the cursors held by
@@ -1336,13 +1147,16 @@ bool LyXText::deleteEmptyParagraphMechanism(LCursor & cur, LCursor const & old)
 #endif
                        // correct all cursor parts
                        fixCursorAfterDelete(cur.top(), old.top());
-                       fixCursorAfterDelete(cur.anchor(), old.top());
-                       return false;
+#ifdef WITH_WARNINGS
+#warning DEPM, look here
+#endif
+                       //fixCursorAfterDelete(cur.anchor(), old.top());
+                       return true;
                }
        }
 
        // only do our magic if we changed paragraph
-       if (old.par() == cur.par())
+       if (old.pit() == cur.pit())
                return false;
 
        // don't delete anything if this is the ONLY paragraph!
@@ -1359,27 +1173,28 @@ bool LyXText::deleteEmptyParagraphMechanism(LCursor & cur, LCursor const & old)
 
        if (oldpar.empty() || (oldpar.size() == 1 && oldpar.isLineSeparator(0))) {
                // ok, we will delete something
-               CursorSlice tmpcursor;
-
                deleted = true;
 
                bool selection_position_was_oldcursor_position =
-                       cur.anchor().par() == old.par() && cur.anchor().pos() == old.pos();
+                       cur.anchor().pit() == old.pit() && cur.anchor().pos() == old.pos();
 
                // This is a bit of a overkill. We change the old and the cur par
                // at max, certainly not everything in between...
-               recUndo(old.par(), cur.par());
+               recUndo(old.pit(), cur.pit());
 
                // Delete old par.
-               pars_.erase(pars_.begin() + old.par());
+               pars_.erase(pars_.begin() + old.pit());
 
                // Update cursor par offset if necessary.
                // Some 'iterator registration' would be nice that takes care of
                // such events. Maybe even signal/slot?
-               if (cur.par() > old.par())
-                       --cur.par();
-               if (cur.anchor().par() > old.par())
-                       --cur.anchor().par();
+               if (cur.pit() > old.pit())
+                       --cur.pit();
+#ifdef WITH_WARNINGS
+#warning DEPM, look here
+#endif
+//             if (cur.anchor().pit() > old.pit())
+//                     --cur.anchor().pit();
 
                if (selection_position_was_oldcursor_position) {
                        // correct selection
@@ -1390,7 +1205,7 @@ bool LyXText::deleteEmptyParagraphMechanism(LCursor & cur, LCursor const & old)
        if (deleted)
                return true;
 
-       if (pars_[old.par()].stripLeadingSpaces())
+       if (pars_[old.pit()].stripLeadingSpaces())
                cur.resetAnchor();
 
        return false;
@@ -1403,13 +1218,13 @@ ParagraphList & LyXText::paragraphs() const
 }
 
 
-void LyXText::recUndo(par_type first, par_type last) const
+void LyXText::recUndo(pit_type first, pit_type last) const
 {
        recordUndo(bv()->cursor(), Undo::ATOMIC, first, last);
 }
 
 
-void LyXText::recUndo(par_type par) const
+void LyXText::recUndo(pit_type par) const
 {
        recordUndo(bv()->cursor(), Undo::ATOMIC, par, par);
 }