]> git.lyx.org Git - lyx.git/blobdiff - src/text.C
ws fixes
[lyx.git] / src / text.C
index b2073c384a2363baa2d508ae6f74b91b64bde2ec..9a668d4bfc28e2c7a60e356628d520eba8b619b5 100644 (file)
@@ -18,6 +18,7 @@
 
 #include "lyxtext.h"
 
+#include "author.h"
 #include "buffer.h"
 #include "bufferparams.h"
 #include "BufferView.h"
 
 #include "support/lstrings.h"
 #include "support/textutils.h"
+#include "support/tostr.h"
+#include "support/std_sstream.h"
 
 using lyx::pos_type;
 using lyx::word_location;
 
+using lyx::support::bformat;
 using lyx::support::contains;
 using lyx::support::lowercase;
+using lyx::support::split;
 using lyx::support::uppercase;
 
+using std::advance;
+using std::distance;
 using std::max;
+using std::min;
 using std::endl;
 using std::string;
 
@@ -73,6 +81,19 @@ extern int const RIGHT_MARGIN = 10;
 
 namespace {
 
+int numberOfSeparators(Paragraph const & par, Row const & row)
+{
+       pos_type const first = max(row.pos(), par.beginOfBody());
+       pos_type const last = row.endpos() - 1;
+       int n = 0;
+       for (pos_type p = first; p < last; ++p) {
+               if (par.isSeparator(p))
+                       ++n;
+       }
+       return n;
+}
+
+
 unsigned int maxParagraphWidth(ParagraphList const & plist)
 {
        unsigned int width = 0;
@@ -83,6 +104,49 @@ unsigned int maxParagraphWidth(ParagraphList const & plist)
        return width;
 }
 
+
+int numberOfLabelHfills(Paragraph const & par, Row const & row)
+{
+       pos_type last = row.endpos() - 1;
+       pos_type first = row.pos();
+
+       // hfill *DO* count at the beginning of paragraphs!
+       if (first) {
+               while (first < last && par.isHfill(first))
+                       ++first;
+       }
+
+       last = min(last, par.beginOfBody());
+       int n = 0;
+       for (pos_type p = first; p < last; ++p) {
+               if (par.isHfill(p))
+                       ++n;
+       }
+       return n;
+}
+
+
+int numberOfHfills(Paragraph const & par, Row const & row)
+{
+       pos_type const last = row.endpos() - 1;
+       pos_type first = row.pos();
+
+       // hfill *DO* count at the beginning of paragraphs!
+       if (first) {
+               while (first < last && par.isHfill(first))
+                       ++first;
+       }
+
+       first = max(first, par.beginOfBody());
+
+       int n = 0;
+       for (pos_type p = first; p < last; ++p) {
+               if (par.isHfill(p))
+                       ++n;
+       }
+       return n;
+}
+
 } // namespace anon
 
 
@@ -344,7 +408,7 @@ int LyXText::rightMargin(Paragraph const & par) const
 {
        LyXTextClass const & tclass = bv()->buffer()->params().getLyXTextClass();
 
-       return 
+       return
                RIGHT_MARGIN
                + font_metrics::signedWidth(tclass.rightmargin(),
                                       tclass.defaultfont())
@@ -463,8 +527,6 @@ void LyXText::rowBreakPoint(ParagraphList::iterator pit, Row & row) const
                        }
 
                        x += thiswidth;
-                       //lyxerr << "i: " << i << " x: "
-                       //<< x << " width: " << width << endl;
                        chunkwidth += thiswidth;
                }
 
@@ -473,10 +535,11 @@ void LyXText::rowBreakPoint(ParagraphList::iterator pit, Row & row) const
                if (x >= width) {
                        // if no break before, break here
                        if (point == end || chunkwidth >= width - left) {
-                               if (i > pos) {
+                               if (i > pos)
                                        point = i;
-                                       break;
-                               }
+                               else
+                                       point = i + 1;
+
                        }
                        // exit on last registered breakpoint:
                        break;
@@ -507,8 +570,7 @@ void LyXText::rowBreakPoint(ParagraphList::iterator pit, Row & row) const
 }
 
 
-// returns the minimum space a row needs on the screen in pixel
-void LyXText::fill(ParagraphList::iterator pit, Row & row, int workwidth) const
+void LyXText::setRowWidth(ParagraphList::iterator pit, Row & row) const
 {
        // get the pure distance
        pos_type const end = row.endpos();
@@ -547,9 +609,7 @@ void LyXText::fill(ParagraphList::iterator pit, Row & row, int workwidth) const
                w = max(w, labelEnd(pit));
        }
 
-       int const fill = workwidth - w - rightMargin(*pit);
-       row.fill(fill);
-       row.width(workwidth - fill);
+       row.width(w + rightMargin(*pit));
 }
 
 
@@ -750,31 +810,34 @@ void LyXText::setHeightOfRow(ParagraphList::iterator pit, Row & row)
 }
 
 
-void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
+void LyXText::breakParagraph(LCursor & cur, char keep_layout)
 {
+       BOOST_ASSERT(this == cur.text());
        // allow only if at start or end, or all previous is new text
-       ParagraphList::iterator cpit = cursorPar();
-       if (cursor().pos() && cursor().pos() != cpit->size()
-           && cpit->isChangeEdited(0, cursor().pos()))
+       Paragraph & cpar = cur.paragraph();
+       ParagraphList::iterator cpit = getPar(cur.par());
+
+       if (cur.pos() != 0 && cur.pos() != cur.lastpos()
+           && cpar.isChangeEdited(0, cur.pos()))
                return;
 
        LyXTextClass const & tclass =
                bv()->buffer()->params().getLyXTextClass();
-       LyXLayout_ptr const & layout = cpit->layout();
+       LyXLayout_ptr const & layout = cpar.layout();
 
        // this is only allowed, if the current paragraph is not empty
        // or caption and if it has not the keepempty flag active
-       if (cpit->empty() && !cpit->allowEmpty()
+       if (cur.lastpos() == 0 && !cpar.allowEmpty()
           && layout->labeltype != LABEL_SENSITIVE)
                return;
 
        // a layout change may affect also the following paragraph
-       recUndo(cursor().par(), parOffset(undoSpan(cpit)) - 1);
+       recUndo(cur.par(), parOffset(undoSpan(cpit)) - 1);
 
        // Always break behind a space
        // It is better to erase the space (Dekel)
-       if (cursor().pos() < cpit->size() && cpit->isLineSeparator(cursor().pos()))
-               cpit->erase(cursor().pos());
+       if (cur.pos() != cur.lastpos() && cpar.isLineSeparator(cur.pos()))
+               cpar.erase(cur.pos());
 
        // break the paragraph
        if (keep_layout)
@@ -786,16 +849,16 @@ void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
        // breakParagraph call should return a bool if it inserts the
        // paragraph before or behind and we should react on that one
        // but we can fix this in 1.3.0 (Jug 20020509)
-       bool const isempty = cpit->allowEmpty() && cpit->empty();
-       ::breakParagraph(bv()->buffer()->params(), paragraphs, cpit,
-                        cursor().pos(), keep_layout);
+       bool const isempty = cpar.allowEmpty() && cpar.empty();
+       ::breakParagraph(bv()->buffer()->params(), paragraphs(), cpit,
+                        cur.pos(), keep_layout);
 
-       cpit = cursorPar();
+       cpit = getPar(cur.par());
        ParagraphList::iterator next_par = boost::next(cpit);
 
        // well this is the caption hack since one caption is really enough
        if (layout->labeltype == LABEL_SENSITIVE) {
-               if (!cursor().pos())
+               if (!cur.pos())
                        // set to standard-layout
                        cpit->applyLayout(tclass.defaultLayout());
                else
@@ -807,11 +870,10 @@ void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
        // move one row up!
        // This touches only the screen-update. Otherwise we would may have
        // an empty row on the screen
-       RowList::iterator crit = cpit->getRow(cursor().pos());
-       if (cursor().pos() && crit->pos() == cursor().pos()
-           && !cpit->isNewline(cursor().pos() - 1))
+       if (cur.pos() != 0 && cur.textRow().pos() == cur.pos()
+           && !cpit->isNewline(cur.pos() - 1))
        {
-               cursorLeft(bv());
+               cursorLeft(cur);
        }
 
        while (!next_par->empty() && next_par->isNewline(0))
@@ -823,33 +885,36 @@ void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
 
        // This check is necessary. Otherwise the new empty paragraph will
        // be deleted automatically. And it is more friendly for the user!
-       if (cursor().pos() || isempty)
-               setCursor(next_par, 0);
+       if (cur.pos() != 0 || isempty)
+               setCursor(cur, cur.par() + 1, 0);
        else
-               setCursor(cpit, 0);
+               setCursor(cur, cur.par(), 0);
 }
 
 
 // convenience function
-void LyXText::redoParagraph()
+void LyXText::redoParagraph(LCursor & cur)
 {
-       bv()->cursor().clearSelection();
-       redoParagraph(cursorPar());
-       setCursorIntern(cursor().par(), cursor().pos());
+       BOOST_ASSERT(this == cur.text());
+       cur.clearSelection();
+       redoParagraph(getPar(cur.par()));
+       setCursorIntern(cur, cur.par(), cur.pos());
 }
 
 
 // insert a character, moves all the following breaks in the
 // same Paragraph one to the right and make a rebreak
-void LyXText::insertChar(char c)
+void LyXText::insertChar(LCursor & cur, char c)
 {
-       recordUndo(Undo::INSERT, this, cursor().par(), cursor().par());
+       BOOST_ASSERT(this == cur.text());
+       recordUndo(cur, Undo::INSERT);
 
-       // When the free-spacing option is set for the current layout,
-       // disable the double-space checking
+       Paragraph & par = cur.paragraph();
+       // try to remove this
+       ParagraphList::iterator pit = getPar(cur.par());
 
-       bool const freeSpacing = cursorPar()->layout()->free_spacing ||
-               cursorPar()->isFreeSpacing();
+       bool const freeSpacing = par.layout()->free_spacing ||
+               par.isFreeSpacing();
 
        if (lyxrc.auto_number) {
                static string const number_operators = "+-/*";
@@ -859,36 +924,28 @@ void LyXText::insertChar(char c)
                if (current_font.number() == LyXFont::ON) {
                        if (!IsDigit(c) && !contains(number_operators, c) &&
                            !(contains(number_seperators, c) &&
-                             cursor().pos() >= 1 &&
-                             cursor().pos() < cursorPar()->size() &&
-                             getFont(cursorPar(), cursor().pos()).number() == LyXFont::ON &&
-                             getFont(cursorPar(), cursor().pos() - 1).number() == LyXFont::ON)
+                             cur.pos() != 0 &&
+                             cur.pos() != cur.lastpos() &&
+                             getFont(pit, cur.pos()).number() == LyXFont::ON &&
+                             getFont(pit, cur.pos() - 1).number() == LyXFont::ON)
                           )
-                               number(); // Set current_font.number to OFF
+                               number(cur); // Set current_font.number to OFF
                } else if (IsDigit(c) &&
                           real_current_font.isVisibleRightToLeft()) {
-                       number(); // Set current_font.number to ON
+                       number(cur); // Set current_font.number to ON
 
-                       if (cursor().pos() > 0) {
-                               char const c = cursorPar()->getChar(cursor().pos() - 1);
+                       if (cur.pos() != 0) {
+                               char const c = par.getChar(cur.pos() - 1);
                                if (contains(number_unary_operators, c) &&
-                                   (cursor().pos() == 1 ||
-                                    cursorPar()->isSeparator(cursor().pos() - 2) ||
-                                    cursorPar()->isNewline(cursor().pos() - 2))
+                                   (cur.pos() == 1
+                                    || par.isSeparator(cur.pos() - 2)
+                                    || par.isNewline(cur.pos() - 2))
                                  ) {
-                                       setCharFont(
-                                                   cursorPar(),
-                                                   cursor().pos() - 1,
-                                                   current_font);
-                               } else if (contains(number_seperators, c) &&
-                                          cursor().pos() >= 2 &&
-                                          getFont(
-                                                  cursorPar(),
-                                                  cursor().pos() - 2).number() == LyXFont::ON) {
-                                       setCharFont(
-                                                   cursorPar(),
-                                                   cursor().pos() - 1,
-                                                   current_font);
+                                       setCharFont(pit, cur.pos() - 1, current_font);
+                               } else if (contains(number_seperators, c)
+                                    && cur.pos() >= 2
+                                    && getFont(pit, cur.pos() - 2).number() == LyXFont::ON) {
+                                       setCharFont(pit, cur.pos() - 1, current_font);
                                }
                        }
                }
@@ -910,36 +967,41 @@ void LyXText::insertChar(char c)
        LyXFont realtmpfont = real_current_font;
        LyXFont rawtmpfont = current_font;
 
+       // When the free-spacing option is set for the current layout,
+       // disable the double-space checking
        if (!freeSpacing && IsLineSeparatorChar(c)) {
-               if ((cursor().pos() > 0
-                    && cursorPar()->isLineSeparator(cursor().pos() - 1))
-                   || (cursor().pos() > 0
-                       && cursorPar()->isNewline(cursor().pos() - 1))
-                   || (cursor().pos() == 0)) {
+               if (cur.pos() == 0) {
                        static bool sent_space_message = false;
                        if (!sent_space_message) {
-                               if (cursor().pos() == 0)
-                                       bv()->owner()->message(_("You cannot insert a space at the beginning of a paragraph. Please read the Tutorial."));
-                               else
-                                       bv()->owner()->message(_("You cannot type two spaces this way. Please read the Tutorial."));
+                               cur.message(_("You cannot insert a space at the "
+                                       "beginning of a paragraph. Please read the Tutorial."));
+                               sent_space_message = true;
+                               return;
+                       }
+               }
+               BOOST_ASSERT(cur.pos() > 0);
+               if (par.isLineSeparator(cur.pos() - 1)
+                   || par.isNewline(cur.pos() - 1)) {
+                       static bool sent_space_message = false;
+                       if (!sent_space_message) {
+                               cur.message(_("You cannot type two spaces this way. "
+                                       "Please read the Tutorial."));
                                sent_space_message = true;
                        }
-                       charInserted();
                        return;
                }
        }
 
        // Here case LyXText::InsertInset already inserted the character
        if (c != Paragraph::META_INSET)
-               cursorPar()->insertChar(cursor().pos(), c);
+               par.insertChar(cur.pos(), c);
 
-       setCharFont(cursorPar(), cursor().pos(), rawtmpfont);
+       setCharFont(pit, cur.pos(), rawtmpfont);
 
        current_font = rawtmpfont;
        real_current_font = realtmpfont;
-       redoParagraph(cursorPar());
-       setCursor(cursor().par(), cursor().pos() + 1, false, cursor().boundary());
-
+       redoParagraph(cur);
+       setCursor(cur, cur.par(), cur.pos() + 1, false, cur.boundary());
        charInserted();
 }
 
@@ -960,14 +1022,13 @@ void LyXText::charInserted()
 
 void LyXText::prepareToPrint(ParagraphList::iterator pit, Row & row) const
 {
-       double w = row.fill();
+       double w = textWidth() - row.width();
        double fill_hfill = 0;
        double fill_label_hfill = 0;
        double fill_separator = 0;
        double x = 0;
 
-       bool const is_rtl =
-               pit->isRightToLeftPar(bv()->buffer()->params());
+       bool const is_rtl = isRTL(*pit);
        if (is_rtl)
                x = rightMargin(*pit);
        else
@@ -1023,32 +1084,32 @@ void LyXText::prepareToPrint(ParagraphList::iterator pit, Row & row) const
                }
 
                switch (align) {
-    case LYX_ALIGN_BLOCK: {
-                               int const ns = numberOfSeparators(*pit, row);
-                               bool disp_inset = false;
-                               if (row.endpos() < pit->size()) {
-                                       InsetOld * in = pit->getInset(row.endpos());
-                                       if (in)
-                                               disp_inset = in->display();
-                               }
-                               // If we have separators, this is not the last row of a
-                               // par, does not end in newline, and is not row above a
-                               // display inset... then stretch it
-                               if (ns
-                                       && row.endpos() < pit->size()
-                                       && !pit->isNewline(row.endpos() - 1)
-                                       && !disp_inset
-                                       ) {
-                                               fill_separator = w / ns;
-                               } else if (is_rtl) {
-                                       x += w;
-                               }
-                               break;
+               case LYX_ALIGN_BLOCK: {
+                       int const ns = numberOfSeparators(*pit, row);
+                       bool disp_inset = false;
+                       if (row.endpos() < pit->size()) {
+                               InsetBase * in = pit->getInset(row.endpos());
+                               if (in)
+                                       disp_inset = in->display();
+                       }
+                       // If we have separators, this is not the last row of a
+                       // par, does not end in newline, and is not row above a
+                       // display inset... then stretch it
+                       if (ns
+                           && row.endpos() < pit->size()
+                           && !pit->isNewline(row.endpos() - 1)
+                           && !disp_inset
+                               ) {
+                               fill_separator = w / ns;
+                       } else if (is_rtl) {
+                               x += w;
                        }
-    case LYX_ALIGN_RIGHT:
+                       break;
+               }
+               case LYX_ALIGN_RIGHT:
                        x += w;
                        break;
-    case LYX_ALIGN_CENTER:
+               case LYX_ALIGN_CENTER:
                        x += w / 2;
                        break;
                }
@@ -1078,167 +1139,181 @@ void LyXText::prepareToPrint(ParagraphList::iterator pit, Row & row) const
 // the cursor set functions have a special mechanism. When they
 // realize, that you left an empty paragraph, they will delete it.
 
-void LyXText::cursorRightOneWord()
+void LyXText::cursorRightOneWord(LCursor & cur)
 {
-       cursorRightOneWord(cursor());
-       setCursor(cursorPar(), cursor().pos());
+       BOOST_ASSERT(this == cur.text());
+       if (cur.pos() == cur.lastpos() && cur.par() != cur.lastpar()) {
+               ++cur.par();
+               cur.pos() = 0;
+       } else {
+               // Skip through initial nonword stuff.
+               // Treat floats and insets as words.
+               while (cur.pos() != cur.lastpos() && !cur.paragraph().isWord(cur.pos()))
+                       ++cur.pos();
+               // Advance through word.
+               while (cur.pos() != cur.lastpos() && cur.paragraph().isWord(cur.pos()))
+                       ++cur.pos();
+       }
+       setCursor(cur, cur.par(), cur.pos());
 }
 
 
-// Skip initial whitespace at end of word and move cursor to *start*
-// of prior word, not to end of next prior word.
-void LyXText::cursorLeftOneWord()
+void LyXText::cursorLeftOneWord(LCursor & cur)
 {
-       CursorSlice tmpcursor = cursor();
-       cursorLeftOneWord(tmpcursor);
-       setCursor(getPar(tmpcursor), tmpcursor.pos());
+       BOOST_ASSERT(this == cur.text());
+       if (cur.pos() == 0 && cur.par() != 0) {
+               --cur.par();
+               cur.pos() = cur.lastpos();
+       } else { 
+               // Skip through initial nonword stuff.
+               // Treat floats and insets as words.
+               while (cur.pos() != 0 && !cur.paragraph().isWord(cur.pos() - 1))
+                       --cur.pos();
+               // Advance through word.
+               while (cur.pos() != 0 && cur.paragraph().isWord(cur.pos() - 1))
+                       --cur.pos();
+       }
+       setCursor(cur, cur.par(), cur.pos());
 }
 
 
-void LyXText::selectWord(word_location loc)
+void LyXText::selectWord(LCursor & cur, word_location loc)
 {
-       CursorSlice from = cursor();
-       CursorSlice to = cursor();
+       BOOST_ASSERT(this == cur.text());
+       CursorSlice from = cur.current();
+       CursorSlice to = cur.current();
        getWord(from, to, loc);
-       if (cursor() != from)
-               setCursor(from.par(), from.pos());
+       if (cur.current() != from)
+               setCursor(cur, from.par(), from.pos());
        if (to == from)
                return;
-       bv()->cursor().resetAnchor();
-       setCursor(to.par(), to.pos());
-       bv()->cursor().setSelection();
+       cur.resetAnchor();
+       setCursor(cur, to.par(), to.pos());
+       cur.setSelection();
 }
 
 
 // Select the word currently under the cursor when no
 // selection is currently set
-bool LyXText::selectWordWhenUnderCursor(word_location loc)
+bool LyXText::selectWordWhenUnderCursor(LCursor & cur, word_location loc)
 {
-       if (bv()->cursor().selection())
+       BOOST_ASSERT(this == cur.text());
+       if (cur.selection())
                return false;
-       selectWord(loc);
-       return bv()->cursor().selection();
+       selectWord(cur, loc);
+       return cur.selection();
 }
 
 
-void LyXText::acceptChange()
+void LyXText::acceptChange(LCursor & cur)
 {
-       LCursor & cur = bv()->cursor();
-       if (!cur.selection() && cursorPar()->size())
+       BOOST_ASSERT(this == cur.text());
+       if (!cur.selection() && cur.lastpos() != 0)
                return;
 
-       if (cur.selStart().par() == cur.par()) {
-               CursorSlice const & startc = cur.selStart();
-               CursorSlice const & endc = cur.selEnd();
-               recordUndo(Undo::INSERT, this, startc.par());
+       CursorSlice const & startc = cur.selBegin();
+       CursorSlice const & endc = cur.selEnd();
+       if (startc.par() == endc.par()) {
+               recordUndoSelection(cur, Undo::INSERT);
                getPar(startc)->acceptChange(startc.pos(), endc.pos());
                finishUndo();
                cur.clearSelection();
                redoParagraph(getPar(startc));
-               setCursorIntern(startc.par(), 0);
+               setCursorIntern(cur, startc.par(), 0);
        }
 #warning handle multi par selection
 }
 
 
-void LyXText::rejectChange()
+void LyXText::rejectChange(LCursor & cur)
 {
-       LCursor & cur = bv()->cursor();
-       if (!cur.selection() && cursorPar()->size())
+       BOOST_ASSERT(this == cur.text());
+       if (!cur.selection() && cur.lastpos() != 0)
                return;
 
-       if (cur.selStart().par() == cur.selEnd().par()) {
-               CursorSlice const & startc = cur.selStart();
-               CursorSlice const & endc = cur.selEnd();
-               recordUndo(Undo::INSERT, this, startc.par());
+       CursorSlice const & startc = cur.selBegin();
+       CursorSlice const & endc = cur.selEnd();
+       if (startc.par() == endc.par()) {
+               recordUndoSelection(cur, Undo::INSERT);
                getPar(startc)->rejectChange(startc.pos(), endc.pos());
                finishUndo();
                cur.clearSelection();
                redoParagraph(getPar(startc));
-               setCursorIntern(startc.par(), 0);
+               setCursorIntern(cur, startc.par(), 0);
        }
 #warning handle multi par selection
 }
 
 
 // Delete from cursor up to the end of the current or next word.
-void LyXText::deleteWordForward()
+void LyXText::deleteWordForward(LCursor & cur)
 {
-       LCursor & cur = bv()->cursor();
-       if (cursorPar()->empty())
-               cursorRight(true);
+       BOOST_ASSERT(this == cur.text());
+       if (cur.lastpos() == 0)
+               cursorRight(cur);
        else {
-               CursorSlice tmpcursor = cursor();
-               cur.selection() = true; // to avoid deletion
-               cursorRightOneWord();
-               setCursor(tmpcursor, tmpcursor.par(), tmpcursor.pos());
                cur.resetAnchor();
-               cursor() = tmpcursor;
+               cur.selection() = true;
+               cursorRightOneWord(cur);
                cur.setSelection();
-               cutSelection(true, false);
+               cutSelection(cur, true, false);
        }
 }
 
 
 // Delete from cursor to start of current or prior word.
-void LyXText::deleteWordBackward()
+void LyXText::deleteWordBackward(LCursor & cur)
 {
-       LCursor & cur = bv()->cursor();
-       if (cursorPar()->empty())
-               cursorLeft(true);
+       BOOST_ASSERT(this == cur.text());
+       if (cur.lastpos() == 0)
+               cursorLeft(cur);
        else {
-               CursorSlice tmpcursor = cursor();
-               cur.selection() = true; // to avoid deletion
-               cursorLeftOneWord();
-               setCursor(tmpcursor, tmpcursor.par(), tmpcursor.pos());
                cur.resetAnchor();
-               cursor() = tmpcursor;
+               cur.selection() = true;
+               cursorLeftOneWord(cur);
                cur.setSelection();
-               cutSelection(true, false);
+               cutSelection(cur, true, false);
        }
 }
 
 
 // Kill to end of line.
-void LyXText::deleteLineForward()
+void LyXText::deleteLineForward(LCursor & cur)
 {
-       LCursor & cur = bv()->cursor();
-       if (cursorPar()->empty()) {
+       BOOST_ASSERT(this == cur.text());
+       if (cur.lastpos() == 0) {
                // Paragraph is empty, so we just go to the right
-               cursorRight(true);
+               cursorRight(cur);
        } else {
-               CursorSlice tmpcursor = cursor();
-               cur.selection() = true; // to avoid deletion
-               cursorEnd();
-               setCursor(tmpcursor, tmpcursor.par(), tmpcursor.pos());
                cur.resetAnchor();
-               cursor() = tmpcursor;
+               cur.selection() = true; // to avoid deletion
+               cursorEnd(cur);
                cur.setSelection();
                // What is this test for ??? (JMarc)
                if (!cur.selection())
-                       deleteWordForward();
+                       deleteWordForward(cur);
                else
-                       cutSelection(true, false);
+                       cutSelection(cur, true, false);
        }
 }
 
 
-void LyXText::changeCase(LyXText::TextCase action)
+void LyXText::changeCase(LCursor & cur, LyXText::TextCase action)
 {
-       LCursor & cur = bv()->cursor();
+       BOOST_ASSERT(this == cur.text());
        CursorSlice from;
        CursorSlice to;
 
        if (cur.selection()) {
-               from = cur.selStart();
+               from = cur.selBegin();
                to = cur.selEnd();
        } else {
                from = cursor();
                getWord(from, to, lyx::PARTIAL_WORD);
-               setCursor(to.par(), to.pos() + 1);
+               setCursor(cur, to.par(), to.pos() + 1);
        }
 
-       recordUndo(Undo::ATOMIC, this, from.par(), to.par());
+       recordUndoSelection(cur);
 
        pos_type pos = from.pos();
        int par = from.par();
@@ -1273,67 +1348,62 @@ void LyXText::changeCase(LyXText::TextCase action)
 }
 
 
-void LyXText::Delete()
+void LyXText::Delete(LCursor & cur)
 {
-       // this is a very easy implementation
-       CursorSlice old_cursor = cursor();
-
-       // just move to the right
-       cursorRight(true);
-
-       // if you had success make a backspace
-       if (old_cursor.par() != cursor().par() || old_cursor.pos() !=
-cursor().pos()) {
-               recordUndo(Undo::DELETE, this, old_cursor.par());
-               backspace();
+       BOOST_ASSERT(this == cur.text());
+       // just move to the right, if we had success make a backspace
+       CursorSlice sl = cur.current();
+       cursorRight(cur);
+       if (sl == cur.current()) {
+               recordUndo(cur, Undo::DELETE, cur.par(), max(0, cur.par() - 1));
+               backspace(cur);
        }
 }
 
 
-void LyXText::backspace()
+void LyXText::backspace(LCursor & cur)
 {
-       // Get the font that is used to calculate the baselineskip
-       ParagraphList::iterator pit = cursorPar();
-       pos_type lastpos = pit->size();
-
-       if (cursor().pos() == 0) {
+       BOOST_ASSERT(this == cur.text());
+       if (cur.pos() == 0) {
                // The cursor is at the beginning of a paragraph, so
                // the the backspace will collapse two paragraphs into
                // one.
 
                // but it's not allowed unless it's new
-               if (pit->isChangeEdited(0, pit->size()))
+               Paragraph & par = cur.paragraph();
+               if (par.isChangeEdited(0, par.size()))
                        return;
 
                // we may paste some paragraphs
 
                // is it an empty paragraph?
-               if (lastpos == 0 || (lastpos == 1 && pit->isSeparator(0))) {
+               pos_type lastpos = cur.lastpos();
+               if (lastpos == 0 || (lastpos == 1 && par.isSeparator(0))) {
                        // This is an empty paragraph and we delete it just
                        // by moving the cursor one step
                        // left and let the DeleteEmptyParagraphMechanism
                        // handle the actual deletion of the paragraph.
 
-                       if (cursor().par()) {
-                               cursorLeft(bv());
+                       if (cur.par() != 0) {
+                               cursorLeft(cur);
                                // the layout things can change the height of a row !
-                               redoParagraph();
+                               redoParagraph(cur);
                                return;
                        }
                }
 
-               if (cursor().par() != 0)
-                       recordUndo(Undo::DELETE, this, cursor().par() - 1, cursor().par());
+               if (cur.par() != 0)
+                       recordUndo(cur, Undo::DELETE, cur.par() - 1);
 
-               ParagraphList::iterator tmppit = cursorPar();
+               ParagraphList::iterator tmppit = getPar(cur.par());
                // We used to do cursorLeftIntern() here, but it is
                // not a good idea since it triggers the auto-delete
                // mechanism. So we do a cursorLeftIntern()-lite,
                // without the dreaded mechanism. (JMarc)
-               if (cursor().par() != 0) {
+               if (cur.par() != 0) {
                        // steps into the above paragraph.
-                       setCursorIntern(cursor().par() - 1,
-                                       getPar(cursor().par() - 1)->size(),
+                       setCursorIntern(cur, cur.par() - 1,
+                                       getPar(cur.par() - 1)->size(),
                                        false);
                }
 
@@ -1344,7 +1414,7 @@ void LyXText::backspace()
                Buffer & buf = *bv()->buffer();
                BufferParams const & bufparams = buf.params();
                LyXTextClass const & tclass = bufparams.getLyXTextClass();
-               ParagraphList::iterator const cpit = cursorPar();
+               ParagraphList::iterator const cpit = getPar(cur.par());
 
                if (cpit != tmppit
                    && (cpit->layout() == tmppit->layout()
@@ -1352,47 +1422,42 @@ void LyXText::backspace()
                    && cpit->getAlign() == tmppit->getAlign()) {
                        mergeParagraph(bufparams, buf.paragraphs(), cpit);
 
-                       if (cursor().pos() && cpit->isSeparator(cursor().pos() - 1))
-                               cursor().pos(cursor().pos() - 1);
+                       if (cur.pos() != 0 && cpit->isSeparator(cur.pos() - 1))
+                               --cur.pos();
 
                        // the counters may have changed
                        updateCounters();
-                       setCursor(cursor().par(), cursor().pos(), false);
+                       setCursor(cur, cur.par(), cur.pos(), false);
                }
        } else {
                // this is the code for a normal backspace, not pasting
                // any paragraphs
-               recordUndo(Undo::DELETE, this, cursor().par());
+               recordUndo(cur, Undo::DELETE);
                // We used to do cursorLeftIntern() here, but it is
                // not a good idea since it triggers the auto-delete
                // mechanism. So we do a cursorLeftIntern()-lite,
                // without the dreaded mechanism. (JMarc)
-               setCursorIntern(cursor().par(), cursor().pos() - 1,
-                               false, cursor().boundary());
-               cursorPar()->erase(cursor().pos());
+               setCursorIntern(cur, cur.par(), cur.pos() - 1,
+                               false, cur.boundary());
+               cur.paragraph().erase(cur.pos());
        }
 
-       lastpos = cursorPar()->size();
-       if (cursor().pos() == lastpos)
-               setCurrentFont();
+       if (cur.pos() == cur.lastpos())
+               setCurrentFont(cur);
 
-       redoParagraph();
-       setCursor(cursor().par(), cursor().pos(), false, cursor().boundary());
+       redoParagraph(cur);
+       setCursor(cur, cur.par(), cur.pos(), false, cur.boundary());
 }
 
 
 ParagraphList::iterator LyXText::cursorPar() const
 {
+       //lyxerr << "### cursorPar: cursor: " << bv()->cursor() << endl;
+       //lyxerr << "xxx cursorPar: cursor: " << cursor() << endl;
        return getPar(cursor().par());
 }
 
 
-RowList::iterator LyXText::cursorRow() const
-{
-       return cursorPar()->getRow(cursor().pos());
-}
-
-
 ParagraphList::iterator LyXText::getPar(CursorSlice const & cur) const
 {
        return getPar(cur.par());
@@ -1401,18 +1466,21 @@ ParagraphList::iterator LyXText::getPar(CursorSlice const & cur) const
 
 ParagraphList::iterator LyXText::getPar(int par) const
 {
+       //lyxerr << "getPar: " << par << " from " << paragraphs().size() << endl;
        BOOST_ASSERT(par >= 0);
        BOOST_ASSERT(par < int(paragraphs().size()));
        ParagraphList::iterator pit = paragraphs().begin();
-       std::advance(pit, par);
+       advance(pit, par);
        return pit;
 }
 
 
+// y is relative to this LyXText's top
 RowList::iterator
 LyXText::getRowNearY(int y, ParagraphList::iterator & pit) const
 {
-       //lyxerr << "getRowNearY: y " << y << endl;
+       BOOST_ASSERT(!paragraphs().empty());
+       BOOST_ASSERT(!paragraphs().begin()->rows.empty());
 #if 1
        ParagraphList::iterator const
                pend = boost::prior(paragraphs().end());
@@ -1453,36 +1521,18 @@ RowList::iterator LyXText::firstRow() const
 }
 
 
-ParagraphList::iterator LyXText::firstPar() const
-{
-       return paragraphs().begin();
-}
-
-
 RowList::iterator LyXText::lastRow() const
 {
        return boost::prior(endRow());
 }
 
 
-ParagraphList::iterator LyXText::lastPar() const
-{
-       return boost::prior(endPar());
-}
-
-
 RowList::iterator LyXText::endRow() const
 {
        return paragraphs().back().rows.end();
 }
 
 
-ParagraphList::iterator LyXText::endPar() const
-{
-       return paragraphs().end();
-}
-
-
 void LyXText::nextRow(ParagraphList::iterator & pit,
        RowList::iterator & rit) const
 {
@@ -1510,40 +1560,9 @@ void LyXText::previousRow(ParagraphList::iterator & pit,
 }
 
 
-string LyXText::selectionAsString(Buffer const & buffer, bool label) const
-{
-       LCursor & cur = bv()->cursor();
-       if (!cur.selection())
-               return string();
-
-       // should be const ...
-       ParagraphList::iterator startpit = getPar(cur.selStart());
-       ParagraphList::iterator endpit = getPar(cur.selEnd());
-       size_t const startpos = cur.selStart().pos();
-       size_t const endpos = cur.selEnd().pos();
-
-       if (startpit == endpit)
-               return startpit->asString(buffer, startpos, endpos, label);
-
-       // First paragraph in selection
-       string result =
-               startpit->asString(buffer, startpos, startpit->size(), label) + "\n\n";
-
-       // The paragraphs in between (if any)
-       ParagraphList::iterator pit = startpit;
-       for (++pit; pit != endpit; ++pit)
-               result += pit->asString(buffer, 0, pit->size(), label) + "\n\n";
-
-       // Last paragraph in selection
-       result += endpit->asString(buffer, 0, endpos, label);
-
-       return result;
-}
-
-
 int LyXText::parOffset(ParagraphList::iterator pit) const
 {
-       return std::distance(paragraphs().begin(), pit);
+       return distance(paragraphs().begin(), pit);
 }
 
 
@@ -1573,14 +1592,14 @@ void LyXText::redoParagraphInternal(ParagraphList::iterator pit)
        do {
                Row row(z);
                rowBreakPoint(pit, row);
-               z = row.endpos();
-               fill(pit, row, textwidth_);
+               setRowWidth(pit, row);
                prepareToPrint(pit, row);
                setHeightOfRow(pit, row);
                row.y_offset(pit->height);
                pit->rows.push_back(row);
                pit->width = std::max(pit->width, row.width());
                pit->height += row.height();
+               z = row.endpos();
        } while (z < pit->size());
 
        height += pit->height;
@@ -1640,6 +1659,13 @@ void LyXText::draw(PainterInfo & pi, int x, int y) const
 }
 
 
+// only used for inset right now. should also be used for main text
+void LyXText::drawSelection(PainterInfo &, int, int) const
+{
+       //lyxerr << "LyXText::drawSelection at " << x << " " << y << endl;
+}
+
+
 bool LyXText::isLastRow(ParagraphList::iterator pit, Row const & row) const
 {
        return row.endpos() >= pit->size()
@@ -1653,78 +1679,19 @@ bool LyXText::isFirstRow(ParagraphList::iterator pit, Row const & row) const
 }
 
 
-void LyXText::cursorLeftOneWord(CursorSlice & cur)
-{
-       // treat HFills, floats and Insets as words
-
-       ParagraphList::iterator pit = cursorPar();
-       size_t pos = cur.pos();
-
-       while (pos &&
-              (pit->isSeparator(pos - 1) ||
-               pit->isKomma(pos - 1) ||
-               pit->isNewline(pos - 1)) &&
-              !(pit->isHfill(pos - 1) ||
-                pit->isInset(pos - 1)))
-               --pos;
-
-       if (pos &&
-           (pit->isInset(pos - 1) ||
-            pit->isHfill(pos - 1))) {
-               --pos;
-       } else if (!pos) {
-               if (pit != paragraphs().begin()) {
-                       --pit;
-                       pos = pit->size();
-               }
-       } else {                // Here, cur != 0
-               while (pos > 0 && pit->isWord(pos - 1))
-                       --pos;
-       }
-
-       cur.par(parOffset(pit));
-       cur.pos(pos);
-}
-
-
-void LyXText::cursorRightOneWord(CursorSlice & cur)
-{
-       // treat floats, HFills and Insets as words
-       ParagraphList::iterator pit = cursorPar();
-       pos_type pos = cur.pos();
-
-       if (pos == pit->size() &&
-               boost::next(pit) != paragraphs().end()) {
-               ++pit;
-               pos = 0;
-       } else {
-               // Skip through initial nonword stuff.
-               while (pos < pit->size() && !pit->isWord(pos)) {
-                       ++pos;
-               }
-               // Advance through word.
-               while (pos < pit->size() && pit->isWord(pos)) {
-                       ++pos;
-               }
-       }
-
-       cur.par(parOffset(pit));
-       cur.pos(pos);
-}
-
-
-void LyXText::getWord(CursorSlice & from, CursorSlice & to, word_location const loc)
+void LyXText::getWord(CursorSlice & from, CursorSlice & to,
+       word_location const loc)
 {
-       ParagraphList::iterator from_par = getPar(from);
+       Paragraph & from_par = *getPar(from);
        switch (loc) {
        case lyx::WHOLE_WORD_STRICT:
-               if (from.pos() == 0 || from.pos() == from_par->size()
-                   || from_par->isSeparator(from.pos())
-                   || from_par->isKomma(from.pos())
-                   || from_par->isNewline(from.pos())
-                   || from_par->isSeparator(from.pos() - 1)
-                   || from_par->isKomma(from.pos() - 1)
-                   || from_par->isNewline(from.pos() - 1)) {
+               if (from.pos() == 0 || from.pos() == from_par.size()
+                   || from_par.isSeparator(from.pos())
+                   || from_par.isKomma(from.pos())
+                   || from_par.isNewline(from.pos())
+                   || from_par.isSeparator(from.pos() - 1)
+                   || from_par.isKomma(from.pos() - 1)
+                   || from_par.isNewline(from.pos() - 1)) {
                        to = from;
                        return;
                }
@@ -1732,14 +1699,14 @@ void LyXText::getWord(CursorSlice & from, CursorSlice & to, word_location const
 
        case lyx::WHOLE_WORD:
                // Move cursor to the beginning, when not already there.
-               if (from.pos() && !from_par->isSeparator(from.pos() - 1)
-                   && !(from_par->isKomma(from.pos() - 1)
-                        || from_par->isNewline(from.pos() - 1)))
-                       cursorLeftOneWord(from);
+               if (from.pos() && !from_par.isSeparator(from.pos() - 1)
+                   && !(from_par.isKomma(from.pos() - 1)
+                        || from_par.isNewline(from.pos() - 1)))
+                       cursorLeftOneWord(bv()->cursor());
                break;
        case lyx::PREVIOUS_WORD:
                // always move the cursor to the beginning of previous word
-               cursorLeftOneWord(from);
+               cursorLeftOneWord(bv()->cursor());
                break;
        case lyx::NEXT_WORD:
                lyxerr << "LyXText::getWord: NEXT_WORD not implemented yet"
@@ -1749,15 +1716,15 @@ void LyXText::getWord(CursorSlice & from, CursorSlice & to, word_location const
                break;
        }
        to = from;
-       ParagraphList::iterator to_par = getPar(to);
-       while (to.pos() < to_par->size()
-              && !to_par->isSeparator(to.pos())
-              && !to_par->isKomma(to.pos())
-              && !to_par->isNewline(to.pos())
-              && !to_par->isHfill(to.pos())
-              && !to_par->isInset(to.pos()))
+       Paragraph & to_par = *getPar(to);
+       while (to.pos() < to_par.size()
+              && !to_par.isSeparator(to.pos())
+              && !to_par.isKomma(to.pos())
+              && !to_par.isNewline(to.pos())
+              && !to_par.isHfill(to.pos())
+              && !to_par.isInset(to.pos()))
        {
-               to.pos(to.pos() + 1);
+               ++to.pos();
        }
 }
 
@@ -1773,7 +1740,7 @@ void LyXText::write(Buffer const & buf, std::ostream & os) const
 
 
 bool LyXText::read(Buffer const & buf, LyXLex & lex)
-{      
+{
        static Change current_change;
 
        bool the_end_read = false;
@@ -1860,23 +1827,11 @@ int LyXText::descent() const
 }
 
 
-int LyXText::cursorX() const
-{
-       return cursorX(cursor());
-}
-
-
-int LyXText::cursorY() const
-{
-       return cursorY(cursor());
-}
-
-
 int LyXText::cursorX(CursorSlice const & cur) const
 {
        ParagraphList::iterator pit = getPar(cur);
        if (pit->rows.empty())
-               return 0;
+               return xo_;
        Row const & row         = *pit->getRow(cur.pos());
        pos_type pos            = cur.pos();
        pos_type cursor_vpos    = 0;
@@ -1890,8 +1845,7 @@ int LyXText::cursorX(CursorSlice const & cur) const
        if (end <= row_pos)
                cursor_vpos = row_pos;
        else if (pos >= end)
-               cursor_vpos = (pit->isRightToLeftPar(bv()->buffer()->params()))
-                       ? row_pos : end;
+               cursor_vpos = isRTL(*pit) ? row_pos : end;
        else if (pos > row_pos && pos >= end)
                // Place cursor after char at (logical) position pos - 1
                cursor_vpos = (bidi.level(pos - 1) % 2 == 0)
@@ -1929,7 +1883,7 @@ int LyXText::cursorX(CursorSlice const & cur) const
                } else
                        x += singleWidth(pit, pos);
        }
-       return int(x);
+       return xo_ + int(x);
 }
 
 
@@ -1937,29 +1891,179 @@ int LyXText::cursorY(CursorSlice const & cur) const
 {
        Paragraph & par = *getPar(cur);
        Row & row = *par.getRow(cur.pos());
-       return par.y + row.y_offset() + row.baseline();
+       return yo_ + par.y + row.y_offset() + row.baseline();
 }
 
 
 CursorSlice & LyXText::cursor()
 {
-       return bv()->cursor().cursor_.back();
+       //lyxerr << "# accessing slice " << findText(this) << endl;
+       if (this != bv()->cursor().text()) {
+               lyxerr << "cursor: " << bv()->cursor()
+                       << "\ntext: " << bv()->cursor().text() 
+                       << "\nthis: " << this << endl;
+               BOOST_ASSERT(false);
+       }
+       return bv()->cursor().current();
 }
 
 
 CursorSlice const & LyXText::cursor() const
 {
-       return bv()->cursor().cursor_.back();
+       if (this != bv()->cursor().text()) {
+               lyxerr << "cursor: " << bv()->cursor()
+                       << "\ntext: " << bv()->cursor().text() 
+                       << "\nthis: " << this << endl;
+               BOOST_ASSERT(false);
+       }
+       return bv()->cursor().current();
+}
+
+
+void LyXText::replaceSelection(LCursor & cur)
+{
+       BOOST_ASSERT(this == cur.text());
+       if (cur.selection()) {
+               cutSelection(cur, true, false);
+               cur.update();
+       }
+}
+
+
+// Returns the current font and depth as a message.
+string LyXText::currentState(LCursor & cur)
+{
+       BOOST_ASSERT(this == cur.text());
+       Buffer * buffer = bv()->buffer();
+       Paragraph const & par = cur.paragraph();
+       std::ostringstream os;
+
+       bool const show_change = buffer->params().tracking_changes
+               && cur.pos() != cur.lastpos()
+               && par.lookupChange(cur.pos()) != Change::UNCHANGED;
+
+       if (show_change) {
+               Change change = par.lookupChangeFull(cur.pos());
+               Author const & a = buffer->params().authors().get(change.author);
+               os << _("Change: ") << a.name();
+               if (!a.email().empty())
+                       os << " (" << a.email() << ")";
+               if (change.changetime)
+                       os << _(" at ") << ctime(&change.changetime);
+               os << " : ";
+       }
+
+       // I think we should only show changes from the default
+       // font. (Asger)
+       LyXFont font = real_current_font;
+       font.reduce(buffer->params().getLyXTextClass().defaultfont());
+
+       // avoid _(...) re-entrance problem
+       string const s = font.stateText(&buffer->params());
+       os << bformat(_("Font: %1$s"), s);
+
+       // os << bformat(_("Font: %1$s"), font.stateText(&buffer->params));
+
+       // The paragraph depth
+       int depth = getDepth();
+       if (depth > 0)
+               os << bformat(_(", Depth: %1$s"), tostr(depth));
+
+       // The paragraph spacing, but only if different from
+       // buffer spacing.
+       Spacing const & spacing = par.params().spacing();
+       if (!spacing.isDefault()) {
+               os << _(", Spacing: ");
+               switch (spacing.getSpace()) {
+               case Spacing::Single:
+                       os << _("Single");
+                       break;
+               case Spacing::Onehalf:
+                       os << _("OneHalf");
+                       break;
+               case Spacing::Double:
+                       os << _("Double");
+                       break;
+               case Spacing::Other:
+                       os << _("Other (") << spacing.getValue() << ')';
+                       break;
+               case Spacing::Default:
+                       // should never happen, do nothing
+                       break;
+               }
+       }
+#ifdef DEVEL_VERSION
+       os << _(", Paragraph: ") << par.id();
+       os << _(", Position: ") << cur.pos();
+       Row & row = cur.textRow();
+       os << bformat(_(", Row b:%1$d e:%2$d"), row.pos(), row.endpos());
+       os << _(", Inset: ");
+       InsetOld * inset = par.inInset();
+       if (inset)
+               os << inset << " owner: " << inset->owner();
+       else
+               os << -1;
+#endif
+       return os.str();
 }
 
 
-CursorSlice & LyXText::anchor()
+string LyXText::getPossibleLabel(LCursor & cur) const
 {
-       return bv()->cursor().anchor_.back();
+       ParagraphList & plist = paragraphs();
+       ParagraphList::iterator pit = getPar(cur.par());
+
+       LyXLayout_ptr layout = pit->layout();
+
+       if (layout->latextype == LATEX_PARAGRAPH && pit != plist.begin()) {
+               ParagraphList::iterator pit2 = boost::prior(pit);
+
+               LyXLayout_ptr const & layout2 = pit2->layout();
+
+               if (layout2->latextype != LATEX_PARAGRAPH) {
+                       pit = pit2;
+                       layout = layout2;
+               }
+       }
+
+       string text = layout->latexname().substr(0, 3);
+       if (layout->latexname() == "theorem")
+               text = "thm"; // Create a correct prefix for prettyref
+
+       text += ':';
+       if (layout->latextype == LATEX_PARAGRAPH || lyxrc.label_init_length < 0)
+               text.erase();
+
+       string par_text = pit->asString(*cur.bv().buffer(), false);
+       for (int i = 0; i < lyxrc.label_init_length; ++i) {
+               if (par_text.empty())
+                       break;
+               string head;
+               par_text = split(par_text, head, ' ');
+               // Is it legal to use spaces in labels ?
+               if (i > 0)
+                       text += '-';
+               text += head;
+       }
+
+       return text;
 }
 
 
-CursorSlice const & LyXText::anchor() const
+int LyXText::dist(int x, int y) const
 {
-       return bv()->cursor().anchor_.back();
+       int xx = 0;
+       int yy = 0;
+
+       if (x < xo_)
+               xx = xo_ - x;
+       else if (x > xo_ + width)
+               xx = x - xo_ - width;
+
+       if (y < yo_ - ascent())
+               yy = yo_ - ascent() - y;
+       else if (y > yo_ + descent())
+               yy = y - yo_ - descent();
+
+       return xx + yy;
 }