]> git.lyx.org Git - lyx.git/blobdiff - src/text.C
ws changes only
[lyx.git] / src / text.C
index 5af0a86ec168f94d5742defb681a168c13e937a5..16db12f50ab5caaec20052cd0d20957e137ff2fb 100644 (file)
@@ -1,5 +1,5 @@
 /**
- * \file text.C
+ * \file src/text.C
  * This file is part of LyX, the document processor.
  * Licence details can be found in the file COPYING.
  *
 #include "funcrequest.h"
 #include "gettext.h"
 #include "language.h"
+#include "LColor.h"
 #include "lyxlength.h"
 #include "lyxrc.h"
 #include "lyxrow.h"
 #include "lyxrow_funcs.h"
+#include "paragraph.h"
 #include "paragraph_funcs.h"
 #include "ParagraphParameters.h"
 #include "rowpainter.h"
@@ -57,6 +59,7 @@ using lyx::support::uppercase;
 
 using std::max;
 using std::endl;
+using std::string;
 
 
 /// top, right, bottom pixel margin
@@ -92,7 +95,7 @@ void LyXText::updateRowPositions()
        for (height = 0; pit != end; ++pit) {
                RowList::iterator rit = pit->rows.begin();
                RowList::iterator rend = pit->rows.end();
-               for ( ; rit != rend ; rit = ++rit) {
+               for ( ; rit != rend ; ++rit) {
                        rit->y(height);
                        height += rit->height();
                }
@@ -876,7 +879,7 @@ int LyXText::labelFill(ParagraphList::iterator pit, Row const & row) const
 }
 
 
-LColor::color LyXText::backgroundColor() const
+LColor_color LyXText::backgroundColor() const
 {
        if (inset_owner)
                return inset_owner->backgroundColor();
@@ -1030,9 +1033,7 @@ void LyXText::setHeightOfRow(ParagraphList::iterator pit, RowList::iterator rit)
 
                // This is special code for the chapter, since the label of this
                // layout is printed in an extra row
-               if (layout->labeltype == LABEL_COUNTER_CHAPTER
-                       && bufparams.secnumdepth >= 0)
-               {
+               if (layout->counter == "chapter" && bufparams.secnumdepth >= 0) {
                        float spacing_val = 1.0;
                        if (!pit->params().spacing().isDefault()) {
                                spacing_val = pit->params().spacing().getValue();
@@ -1191,28 +1192,28 @@ void LyXText::setHeightOfRow(ParagraphList::iterator pit, RowList::iterator rit)
 void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
 {
        // allow only if at start or end, or all previous is new text
-       if (cursor.pos() && cursor.pos() != cursor.par()->size()
-               && cursor.par()->isChangeEdited(0, cursor.pos()))
+       if (cursor.pos() && cursor.pos() != cursorPar()->size()
+               && cursorPar()->isChangeEdited(0, cursor.pos()))
                return;
 
        LyXTextClass const & tclass =
                bv()->buffer()->params().getLyXTextClass();
-       LyXLayout_ptr const & layout = cursor.par()->layout();
+       LyXLayout_ptr const & layout = cursorPar()->layout();
 
        // this is only allowed, if the current paragraph is not empty or caption
        // and if it has not the keepempty flag active
-       if (cursor.par()->empty() && !cursor.par()->allowEmpty()
+       if (cursorPar()->empty() && !cursorPar()->allowEmpty()
           && layout->labeltype != LABEL_SENSITIVE)
                return;
 
-       recordUndo(bv(), Undo::ATOMIC, cursor.par());
+       recordUndo(bv(), Undo::ATOMIC, cursorPar());
 
        // Always break behind a space
        //
        // It is better to erase the space (Dekel)
-       if (cursor.pos() < cursor.par()->size()
-            && cursor.par()->isLineSeparator(cursor.pos()))
-          cursor.par()->erase(cursor.pos());
+       if (cursor.pos() < cursorPar()->size()
+            && cursorPar()->isLineSeparator(cursor.pos()))
+          cursorPar()->erase(cursor.pos());
 
        // break the paragraph
        if (keep_layout)
@@ -1224,21 +1225,21 @@ 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 = (cursor.par()->allowEmpty() && cursor.par()->empty());
-       ::breakParagraph(bv()->buffer()->params(), paragraphs, cursor.par(),
+       bool const isempty = (cursorPar()->allowEmpty() && cursorPar()->empty());
+       ::breakParagraph(bv()->buffer()->params(), paragraphs, cursorPar(),
                         cursor.pos(), keep_layout);
 
 #warning Trouble Point! (Lgb)
        // When ::breakParagraph is called from within an inset we must
        // ensure that the correct ParagraphList is used. Today that is not
        // the case and the Buffer::paragraphs is used. Not good. (Lgb)
-       ParagraphList::iterator next_par = boost::next(cursor.par());
+       ParagraphList::iterator next_par = boost::next(cursorPar());
 
        // well this is the caption hack since one caption is really enough
        if (layout->labeltype == LABEL_SENSITIVE) {
                if (!cursor.pos())
                        // set to standard-layout
-                       cursor.par()->applyLayout(tclass.defaultLayout());
+                       cursorPar()->applyLayout(tclass.defaultLayout());
                else
                        // set to standard-layout
                        next_par->applyLayout(tclass.defaultLayout());
@@ -1249,7 +1250,7 @@ void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
        // This touches only the screen-update. Otherwise we would may have
        // an empty row on the screen
        if (cursor.pos() && cursorRow()->pos() == cursor.pos()
-           && !cursor.par()->isNewline(cursor.pos() - 1))
+           && !cursorPar()->isNewline(cursor.pos() - 1))
        {
                cursorLeft(bv());
        }
@@ -1258,7 +1259,7 @@ void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
                next_par->erase(0);
 
        updateCounters();
-       redoParagraph(cursor.par());
+       redoParagraph(cursorPar());
        redoParagraph(next_par);
 
        // This check is necessary. Otherwise the new empty paragraph will
@@ -1266,7 +1267,7 @@ void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
        if (cursor.pos() || isempty)
                setCursor(next_par, 0);
        else
-               setCursor(cursor.par(), 0);
+               setCursor(cursorPar(), 0);
 }
 
 
@@ -1274,7 +1275,7 @@ void LyXText::breakParagraph(ParagraphList & paragraphs, char keep_layout)
 void LyXText::redoParagraph()
 {
        clearSelection();
-       redoParagraph(cursor.par());
+       redoParagraph(cursorPar());
        setCursorIntern(cursor.par(), cursor.pos());
 }
 
@@ -1283,13 +1284,13 @@ void LyXText::redoParagraph()
 // same Paragraph one to the right and make a rebreak
 void LyXText::insertChar(char c)
 {
-       recordUndo(bv(), Undo::INSERT, cursor.par());
+       recordUndo(bv(), Undo::INSERT, cursorPar());
 
        // When the free-spacing option is set for the current layout,
        // disable the double-space checking
 
-       bool const freeSpacing = cursor.par()->layout()->free_spacing ||
-               cursor.par()->isFreeSpacing();
+       bool const freeSpacing = cursorPar()->layout()->free_spacing ||
+               cursorPar()->isFreeSpacing();
 
        if (lyxrc.auto_number) {
                static string const number_operators = "+-/*";
@@ -1300,9 +1301,9 @@ void LyXText::insertChar(char c)
                        if (!IsDigit(c) && !contains(number_operators, c) &&
                            !(contains(number_seperators, c) &&
                              cursor.pos() >= 1 &&
-                             cursor.pos() < cursor.par()->size() &&
-                             getFont(cursor.par(), cursor.pos()).number() == LyXFont::ON &&
-                             getFont(cursor.par(), cursor.pos() - 1).number() == LyXFont::ON)
+                             cursor.pos() < cursorPar()->size() &&
+                             getFont(cursorPar(), cursor.pos()).number() == LyXFont::ON &&
+                             getFont(cursorPar(), cursor.pos() - 1).number() == LyXFont::ON)
                           )
                                number(bv()); // Set current_font.number to OFF
                } else if (IsDigit(c) &&
@@ -1310,23 +1311,23 @@ void LyXText::insertChar(char c)
                        number(bv()); // Set current_font.number to ON
 
                        if (cursor.pos() > 0) {
-                               char const c = cursor.par()->getChar(cursor.pos() - 1);
+                               char const c = cursorPar()->getChar(cursor.pos() - 1);
                                if (contains(number_unary_operators, c) &&
                                    (cursor.pos() == 1 ||
-                                    cursor.par()->isSeparator(cursor.pos() - 2) ||
-                                    cursor.par()->isNewline(cursor.pos() - 2))
+                                    cursorPar()->isSeparator(cursor.pos() - 2) ||
+                                    cursorPar()->isNewline(cursor.pos() - 2))
                                  ) {
                                        setCharFont(
-                                                   cursor.par(),
+                                                   cursorPar(),
                                                    cursor.pos() - 1,
                                                    current_font);
                                } else if (contains(number_seperators, c) &&
                                           cursor.pos() >= 2 &&
                                           getFont(
-                                                  cursor.par(),
+                                                  cursorPar(),
                                                   cursor.pos() - 2).number() == LyXFont::ON) {
                                        setCharFont(
-                                                   cursor.par(),
+                                                   cursorPar(),
                                                    cursor.pos() - 1,
                                                    current_font);
                                }
@@ -1353,9 +1354,9 @@ void LyXText::insertChar(char c)
 
        if (!freeSpacing && IsLineSeparatorChar(c)) {
                if ((cursor.pos() > 0
-                    && cursor.par()->isLineSeparator(cursor.pos() - 1))
+                    && cursorPar()->isLineSeparator(cursor.pos() - 1))
                    || (cursor.pos() > 0
-                       && cursor.par()->isNewline(cursor.pos() - 1))
+                       && cursorPar()->isNewline(cursor.pos() - 1))
                    || (cursor.pos() == 0)) {
                        static bool sent_space_message = false;
                        if (!sent_space_message) {
@@ -1372,13 +1373,13 @@ void LyXText::insertChar(char c)
 
        // Here case LyXText::InsertInset already inserted the character
        if (c != Paragraph::META_INSET)
-               cursor.par()->insertChar(cursor.pos(), c);
+               cursorPar()->insertChar(cursor.pos(), c);
 
-       setCharFont(cursor.par(), cursor.pos(), rawtmpfont);
+       setCharFont(cursorPar(), cursor.pos(), rawtmpfont);
 
        current_font = rawtmpfont;
        real_current_font = realtmpfont;
-       redoParagraph(cursor.par());
+       redoParagraph(cursorPar());
        setCursor(cursor.par(), cursor.pos() + 1, false, cursor.boundary());
 
        charInserted();
@@ -1517,8 +1518,8 @@ void LyXText::prepareToPrint(ParagraphList::iterator pit,
 
 void LyXText::cursorRightOneWord()
 {
-       ::cursorRightOneWord(cursor, ownerParagraphs());
-       setCursor(cursor.par(), cursor.pos());
+       ::cursorRightOneWord(*this, cursor, ownerParagraphs());
+       setCursor(cursorPar(), cursor.pos());
 }
 
 
@@ -1527,16 +1528,16 @@ void LyXText::cursorRightOneWord()
 void LyXText::cursorLeftOneWord()
 {
        LyXCursor tmpcursor = cursor;
-       ::cursorLeftOneWord(tmpcursor, ownerParagraphs());
-       setCursor(tmpcursor.par(), tmpcursor.pos());
+       ::cursorLeftOneWord(*this, tmpcursor, ownerParagraphs());
+       setCursor(getPar(tmpcursor), tmpcursor.pos());
 }
 
 
 void LyXText::selectWord(word_location loc)
 {
        LyXCursor from = cursor;
-       LyXCursor to;
-       ::getWord(from, to, loc, ownerParagraphs());
+       LyXCursor to = cursor;
+       ::getWord(*this, from, to, loc, ownerParagraphs());
        if (cursor != from)
                setCursor(from.par(), from.pos());
        if (to == from)
@@ -1561,17 +1562,17 @@ bool LyXText::selectWordWhenUnderCursor(word_location loc)
 
 void LyXText::acceptChange()
 {
-       if (!selection.set() && cursor.par()->size())
+       if (!selection.set() && cursorPar()->size())
                return;
 
        if (selection.start.par() == selection.end.par()) {
                LyXCursor & startc = selection.start;
                LyXCursor & endc = selection.end;
-               recordUndo(bv(), Undo::INSERT, startc.par());
-               startc.par()->acceptChange(startc.pos(), endc.pos());
+               recordUndo(bv(), Undo::INSERT, getPar(startc));
+               getPar(startc)->acceptChange(startc.pos(), endc.pos());
                finishUndo();
                clearSelection();
-               redoParagraph(startc.par());
+               redoParagraph(getPar(startc));
                setCursorIntern(startc.par(), 0);
        }
 #warning handle multi par selection
@@ -1580,17 +1581,17 @@ void LyXText::acceptChange()
 
 void LyXText::rejectChange()
 {
-       if (!selection.set() && cursor.par()->size())
+       if (!selection.set() && cursorPar()->size())
                return;
 
        if (selection.start.par() == selection.end.par()) {
                LyXCursor & startc = selection.start;
                LyXCursor & endc = selection.end;
-               recordUndo(bv(), Undo::INSERT, startc.par());
-               startc.par()->rejectChange(startc.pos(), endc.pos());
+               recordUndo(bv(), Undo::INSERT, getPar(startc));
+               getPar(startc)->rejectChange(startc.pos(), endc.pos());
                finishUndo();
                clearSelection();
-               redoParagraph(startc.par());
+               redoParagraph(getPar(startc));
                setCursorIntern(startc.par(), 0);
        }
 #warning handle multi par selection
@@ -1599,8 +1600,7 @@ void LyXText::rejectChange()
 
 // This function is only used by the spellchecker for NextWord().
 // It doesn't handle LYX_ACCENTs and probably never will.
-WordLangTuple const
-LyXText::selectNextWordToSpellcheck(float & value)
+WordLangTuple const LyXText::selectNextWordToSpellcheck(float & value)
 {
        if (the_locking_inset) {
                WordLangTuple word = the_locking_inset->selectNextWordToSpellcheck(bv(), value);
@@ -1610,33 +1610,33 @@ LyXText::selectNextWordToSpellcheck(float & value)
                        return word;
                }
                // we have to go on checking so move cursor to the next char
-               if (cursor.pos() == cursor.par()->size()) {
-                       if (boost::next(cursor.par()) == ownerParagraphs().end())
+               if (cursor.pos() == cursorPar()->size()) {
+                       if (cursor.par() + 1 == int(ownerParagraphs().size()))
                                return word;
-                       cursor.par(boost::next(cursor.par()));
+                       cursor.par(cursor.par() + 1);
                        cursor.pos(0);
                } else
-                       cursor.pos(cursor.pos() + 1);
+                               cursor.pos(cursor.pos() + 1);
        }
-       ParagraphList::iterator tmppit = cursor.par();
+       int const tmppar = cursor.par();
 
        // If this is not the very first word, skip rest of
        // current word because we are probably in the middle
        // of a word if there is text here.
-       if (cursor.pos() || cursor.par() != ownerParagraphs().begin()) {
-               while (cursor.pos() < cursor.par()->size()
-                      && cursor.par()->isLetter(cursor.pos()))
+       if (cursor.pos() || cursor.par() != 0) {
+               while (cursor.pos() < cursorPar()->size()
+                      && cursorPar()->isLetter(cursor.pos()))
                        cursor.pos(cursor.pos() + 1);
        }
 
        // Now, skip until we have real text (will jump paragraphs)
        while (true) {
-               ParagraphList::iterator cpit = cursor.par();
-               pos_type const cpos(cursor.pos());
+               ParagraphList::iterator cpit = cursorPar();
+               pos_type const cpos = cursor.pos();
 
                if (cpos == cpit->size()) {
-                       if (boost::next(cpit) != ownerParagraphs().end()) {
-                               cursor.par(boost::next(cpit));
+                       if (cursor.par() + 1 != int(ownerParagraphs().size())) {
+                               cursor.par(cursor.par() + 1);
                                cursor.pos(0);
                                continue;
                        }
@@ -1654,18 +1654,18 @@ LyXText::selectNextWordToSpellcheck(float & value)
        }
 
        // now check if we hit an inset so it has to be a inset containing text!
-       if (cursor.pos() < cursor.par()->size() &&
-           cursor.par()->isInset(cursor.pos())) {
+       if (cursor.pos() < cursorPar()->size() &&
+           cursorPar()->isInset(cursor.pos())) {
                // lock the inset!
                FuncRequest cmd(bv(), LFUN_INSET_EDIT, "left");
-               cursor.par()->getInset(cursor.pos())->localDispatch(cmd);
+               cursorPar()->getInset(cursor.pos())->localDispatch(cmd);
                // now call us again to do the above trick
                // but obviously we have to start from down below ;)
                return bv()->text->selectNextWordToSpellcheck(value);
        }
 
        // Update the value if we changed paragraphs
-       if (cursor.par() != tmppit) {
+       if (cursor.par() != tmppar) {
                setCursor(cursor.par(), cursor.pos());
                value = float(cursor.y())/float(height);
        }
@@ -1673,12 +1673,12 @@ LyXText::selectNextWordToSpellcheck(float & value)
        // Start the selection from here
        selection.cursor = cursor;
 
-       string lang_code = getFont(cursor.par(), cursor.pos()).language()->code();
+       string lang_code = getFont(cursorPar(), cursor.pos()).language()->code();
        // and find the end of the word (insets like optional hyphens
        // and ligature break are part of a word)
-       while (cursor.pos() < cursor.par()->size()
-              && cursor.par()->isLetter(cursor.pos())
-              && !isDeletedText(*cursor.par(), cursor.pos()))
+       while (cursor.pos() < cursorPar()->size()
+              && cursorPar()->isLetter(cursor.pos())
+              && !isDeletedText(*cursorPar(), cursor.pos()))
                cursor.pos(cursor.pos() + 1);
 
        // Finally, we copy the word to a string and return it
@@ -1686,8 +1686,8 @@ LyXText::selectNextWordToSpellcheck(float & value)
        if (selection.cursor.pos() < cursor.pos()) {
                pos_type i;
                for (i = selection.cursor.pos(); i < cursor.pos(); ++i) {
-                       if (!cursor.par()->isInset(i))
-                               str += cursor.par()->getChar(i);
+                       if (!cursorPar()->isInset(i))
+                               str += cursorPar()->getChar(i);
                }
        }
        return WordLangTuple(str, lang_code);
@@ -1708,11 +1708,11 @@ void LyXText::selectSelectedWord()
        selection.cursor = cursor;
 
        // now find the end of the word
-       while (cursor.pos() < cursor.par()->size()
-              && cursor.par()->isLetter(cursor.pos()))
+       while (cursor.pos() < cursorPar()->size()
+              && cursorPar()->isLetter(cursor.pos()))
                cursor.pos(cursor.pos() + 1);
 
-       setCursor(cursor.par(), cursor.pos());
+       setCursor(cursorPar(), cursor.pos());
 
        // finally set the selection
        setSelection();
@@ -1722,7 +1722,7 @@ void LyXText::selectSelectedWord()
 // Delete from cursor up to the end of the current or next word.
 void LyXText::deleteWordForward()
 {
-       if (cursor.par()->empty())
+       if (cursorPar()->empty())
                cursorRight(bv());
        else {
                LyXCursor tmpcursor = cursor;
@@ -1742,7 +1742,7 @@ void LyXText::deleteWordForward()
 // Delete from cursor to start of current or prior word.
 void LyXText::deleteWordBackward()
 {
-       if (cursor.par()->empty())
+       if (cursorPar()->empty())
                cursorLeft(bv());
        else {
                LyXCursor tmpcursor = cursor;
@@ -1760,7 +1760,7 @@ void LyXText::deleteWordBackward()
 // Kill to end of line.
 void LyXText::deleteLineForward()
 {
-       if (cursor.par()->empty())
+       if (cursorPar()->empty())
                // Paragraph is empty, so we just go to the right
                cursorRight(bv());
        else {
@@ -1793,24 +1793,25 @@ void LyXText::changeCase(LyXText::TextCase action)
                to = selection.end;
        } else {
                from = cursor;
-               ::getWord(from, to, lyx::PARTIAL_WORD, ownerParagraphs());
+               ::getWord(*this, from, to, lyx::PARTIAL_WORD, ownerParagraphs());
                setCursor(to.par(), to.pos() + 1);
        }
 
-       recordUndo(bv(), Undo::ATOMIC, from.par(), to.par());
+       recordUndo(bv(), Undo::ATOMIC, getPar(from), getPar(to));
 
        pos_type pos = from.pos();
-       ParagraphList::iterator pit = from.par();
+       int par = from.par();
 
-       while (pit != ownerParagraphs().end() &&
-              (pos != to.pos() || pit != to.par())) {
+       while (par != int(ownerParagraphs().size()) &&
+              (pos != to.pos() || par != to.par())) {
+               ParagraphList::iterator pit = getPar(par);
                if (pos == pit->size()) {
-                       ++pit;
+                       ++par;
                        pos = 0;
                        continue;
                }
                unsigned char c = pit->getChar(pos);
-               if (!IsInsetChar(c)) {
+               if (c != Paragraph::META_INSET) {
                        switch (action) {
                        case text_lowercase:
                                c = lowercase(c);
@@ -1836,23 +1837,21 @@ void LyXText::Delete()
        // this is a very easy implementation
 
        LyXCursor old_cursor = cursor;
-       int const old_cur_par_id = old_cursor.par()->id();
+       int const old_cur_par_id = cursorPar()->id();
        int const old_cur_par_prev_id =
-               (old_cursor.par() != ownerParagraphs().begin() ?
-                boost::prior(old_cursor.par())->id() : -1);
+               old_cursor.par() ? getPar(old_cursor.par() - 1)->id() : -1;
 
        // just move to the right
        cursorRight(bv());
 
        // CHECK Look at the comment here.
        // This check is not very good...
-       // The cursorRightIntern calls DeleteEmptyParagrapgMechanism
+       // The cursorRightIntern calls DeleteEmptyParagraphMechanism
        // and that can very well delete the par or par->previous in
        // old_cursor. Will a solution where we compare paragraph id's
        //work better?
-       if ((cursor.par() != ownerParagraphs().begin() ? boost::prior(cursor.par())->id() : -1)
-           == old_cur_par_prev_id
-           && cursor.par()->id() != old_cur_par_id) {
+       int iid = cursor.par() ? getPar(cursor.par() - 1)->id() : -1;
+       if (iid == old_cur_par_prev_id && cursorPar()->id() != old_cur_par_id) {
                // delete-empty-paragraph-mechanism has done it
                return;
        }
@@ -1862,7 +1861,7 @@ void LyXText::Delete()
                LyXCursor tmpcursor = cursor;
                // to make sure undo gets the right cursor position
                cursor = old_cursor;
-               recordUndo(bv(), Undo::DELETE, cursor.par());
+               recordUndo(bv(), Undo::DELETE, cursorPar());
                cursor = tmpcursor;
                backspace();
        }
@@ -1872,36 +1871,36 @@ void LyXText::Delete()
 void LyXText::backspace()
 {
        // Get the font that is used to calculate the baselineskip
-       pos_type lastpos = cursor.par()->size();
+       ParagraphList::iterator pit = cursorPar();
+       pos_type lastpos = pit->size();
 
        if (cursor.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 (cursor.par()->isChangeEdited(0, cursor.par()->size()))
+               if (pit->isChangeEdited(0, pit->size()))
                        return;
 
                // we may paste some paragraphs
 
                // is it an empty paragraph?
 
-               if (lastpos == 0
-                    || (lastpos == 1 && cursor.par()->isSeparator(0))) {
+               if (lastpos == 0 || (lastpos == 1 && pit->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() != ownerParagraphs().begin()) {
-                               ParagraphList::iterator tmppit = boost::prior(cursor.par());
-                               if (cursor.par()->layout() == tmppit->layout()
-                                   && cursor.par()->getAlign() == tmppit->getAlign()) {
+                       if (cursor.par()) {
+                               ParagraphList::iterator tmppit = getPar(cursor.par() - 1);
+                               if (cursorPar()->layout() == tmppit->layout()
+                                   && cursorPar()->getAlign() == tmppit->getAlign()) {
                                        // Inherit bottom DTD from the paragraph below.
                                        // (the one we are deleting)
-                                       tmppit->params().lineBottom(cursor.par()->params().lineBottom());
-                                       tmppit->params().spaceBottom(cursor.par()->params().spaceBottom());
-                                       tmppit->params().pagebreakBottom(cursor.par()->params().pagebreakBottom());
+                                       tmppit->params().lineBottom(cursorPar()->params().lineBottom());
+                                       tmppit->params().spaceBottom(cursorPar()->params().spaceBottom());
+                                       tmppit->params().pagebreakBottom(cursorPar()->params().pagebreakBottom());
                                }
 
                                cursorLeft(bv());
@@ -1912,21 +1911,21 @@ void LyXText::backspace()
                        }
                }
 
-               if (cursor.par() != ownerParagraphs().begin()) {
+               if (cursorPar() != ownerParagraphs().begin()) {
                        recordUndo(bv(), Undo::DELETE,
-                               boost::prior(cursor.par()),
-                               cursor.par());
+                               boost::prior(cursorPar()),
+                               cursorPar());
                }
 
-               ParagraphList::iterator tmppit = cursor.par();
+               ParagraphList::iterator tmppit = cursorPar();
                // 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() != ownerParagraphs().begin()) {
+               if (cursor.par() != 0) {
                        // steps into the above paragraph.
-                       setCursorIntern(boost::prior(cursor.par()),
-                                       boost::prior(cursor.par())->size(),
+                       setCursorIntern(cursor.par() - 1,
+                                       getPar(cursor.par() - 1)->size(),
                                        false);
                }
 
@@ -1938,14 +1937,14 @@ void LyXText::backspace()
                BufferParams const & bufparams = buf.params();
                LyXTextClass const & tclass = bufparams.getLyXTextClass();
 
-               if (cursor.par() != tmppit
-                   && (cursor.par()->layout() == tmppit->layout()
+               if (cursorPar() != tmppit
+                   && (cursorPar()->layout() == tmppit->layout()
                        || tmppit->layout() == tclass.defaultLayout())
-                   && cursor.par()->getAlign() == tmppit->getAlign()) {
+                   && cursorPar()->getAlign() == tmppit->getAlign()) {
                        mergeParagraph(bufparams,
-                                      buf.paragraphs(), cursor.par());
+                                      buf.paragraphs(), cursorPar());
 
-                       if (cursor.pos() && cursor.par()->isSeparator(cursor.pos() - 1))
+                       if (cursor.pos() && cursorPar()->isSeparator(cursor.pos() - 1))
                                cursor.pos(cursor.pos() - 1);
 
                        // the row may have changed, block, hfills etc.
@@ -1955,17 +1954,17 @@ void LyXText::backspace()
        } else {
                // this is the code for a normal backspace, not pasting
                // any paragraphs
-               recordUndo(bv(), Undo::DELETE, cursor.par());
+               recordUndo(bv(), Undo::DELETE, cursorPar());
                // 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());
-               cursor.par()->erase(cursor.pos());
+               cursorPar()->erase(cursor.pos());
        }
 
-       lastpos = cursor.par()->size();
+       lastpos = cursorPar()->size();
        if (cursor.pos() == lastpos)
                setCurrentFont();
 
@@ -1974,15 +1973,38 @@ void LyXText::backspace()
 }
 
 
+ParagraphList::iterator LyXText::cursorPar() const
+{
+       return getPar(cursor.par());
+}
+
+
+ParagraphList::iterator LyXText::getPar(LyXCursor const & cur) const
+{
+       return getPar(cur.par());
+}
+
+
+ParagraphList::iterator LyXText::getPar(int par) const
+{
+       BOOST_ASSERT(par >= 0);
+       BOOST_ASSERT(par < ownerParagraphs().size());
+       ParagraphList::iterator pit = ownerParagraphs().begin();
+       std::advance(pit, par);
+       return pit;
+}
+
+
+
 RowList::iterator LyXText::cursorRow() const
 {
-       return getRow(cursor.par(), cursor.pos());
+       return getRow(cursorPar(), cursor.pos());
 }
 
 
 RowList::iterator LyXText::getRow(LyXCursor const & cur) const
 {
-       return getRow(cur.par(), cur.pos());
+       return getRow(getPar(cur), cur.pos());
 }
 
 
@@ -2002,7 +2024,7 @@ LyXText::getRow(ParagraphList::iterator pit, pos_type pos) const
 // returns pointer to some fancy row 'below' specified row
 RowList::iterator LyXText::cursorIRow() const
 {
-       return getRow(cursor.par(), cursor.pos());
+       return getRow(cursorPar(), cursor.pos());
 }
 
 
@@ -2025,7 +2047,7 @@ RowList::iterator LyXText::getRowNearY(int y,
 
 int LyXText::getDepth() const
 {
-       return cursor.par()->getDepth();
+       return cursorPar()->getDepth();
 }
 
 
@@ -2074,7 +2096,37 @@ void LyXText::previousRow(ParagraphList::iterator & pit,
 }
 
 
-bool LyXText::noRows() const
+string LyXText::selectionAsString(Buffer const & buffer, bool label) const
+{
+       if (!selection.set())
+               return string();
+
+       // should be const ...
+       ParagraphList::iterator startpit = getPar(selection.start);
+       ParagraphList::iterator endpit = getPar(selection.end);
+       size_t const startpos = selection.start.pos();
+       size_t const endpos = selection.end.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 ownerParagraphs().begin()->rows.empty();
+       return std::distance(ownerParagraphs().begin(), pit);
 }