]> git.lyx.org Git - lyx.git/blobdiff - src/Text.cpp
Thanks, Andre.
[lyx.git] / src / Text.cpp
index 103c71ac73539af75061d4c0be74441d5caf4641..5803c2d4ad07e1fca7be0574d645a9090801e26c 100644 (file)
 #include "ErrorList.h"
 #include "FuncRequest.h"
 #include "factory.h"
+#include "InsetList.h"
 #include "Language.h"
+#include "Layout.h"
 #include "Length.h"
 #include "Lexer.h"
 #include "lyxfind.h"
 #include "LyXRC.h"
 #include "Paragraph.h"
-#include "paragraph_funcs.h"
 #include "ParagraphParameters.h"
 #include "ParIterator.h"
 #include "TextClass.h"
@@ -79,6 +80,191 @@ namespace lyx {
 using cap::cutSelection;
 using cap::pasteParagraphList;
 
+static bool moveItem(Paragraph & fromPar, pos_type fromPos,
+       Paragraph & toPar, pos_type toPos, BufferParams const & params)
+{
+       // Note: moveItem() does not honour change tracking!
+       // Therefore, it should only be used for breaking and merging paragraphs
+
+       // We need a copy here because the character at fromPos is going to be erased.
+       Font const tmpFont = fromPar.getFontSettings(params, fromPos);
+       Change const tmpChange = fromPar.lookupChange(fromPos);
+
+       if (Inset * tmpInset = fromPar.getInset(fromPos)) {
+               fromPar.releaseInset(fromPos);
+               // The inset is not in fromPar any more.
+               if (!toPar.insertInset(toPos, tmpInset, tmpFont, tmpChange)) {
+                       delete tmpInset;
+                       return false;
+               }
+               return true;
+       }
+
+       char_type const tmpChar = fromPar.getChar(fromPos);
+       fromPar.eraseChar(fromPos, false);
+       toPar.insertChar(toPos, tmpChar, tmpFont, tmpChange);
+       return true;
+}
+
+
+void breakParagraphConservative(BufferParams const & bparams,
+       ParagraphList & pars, pit_type par_offset, pos_type pos)
+{
+       // create a new paragraph
+       Paragraph & tmp = *pars.insert(boost::next(pars.begin(), par_offset + 1),
+                                      Paragraph());
+       Paragraph & par = pars[par_offset];
+
+       tmp.setInsetOwner(&par.inInset());
+       tmp.makeSameLayout(par);
+
+       LASSERT(pos <= par.size(), /**/);
+
+       if (pos < par.size()) {
+               // move everything behind the break position to the new paragraph
+               pos_type pos_end = par.size() - 1;
+
+               for (pos_type i = pos, j = 0; i <= pos_end; ++i) {
+                       if (moveItem(par, pos, tmp, j, bparams)) {
+                               ++j;
+                       }
+               }
+               // Move over the end-of-par change information
+               tmp.setChange(tmp.size(), par.lookupChange(par.size()));
+               par.setChange(par.size(), Change(bparams.trackChanges ?
+                                          Change::INSERTED : Change::UNCHANGED));
+       }
+}
+
+
+void mergeParagraph(BufferParams const & bparams,
+       ParagraphList & pars, pit_type par_offset)
+{
+       Paragraph & next = pars[par_offset + 1];
+       Paragraph & par = pars[par_offset];
+
+       pos_type pos_end = next.size() - 1;
+       pos_type pos_insert = par.size();
+
+       // the imaginary end-of-paragraph character (at par.size()) has to be
+       // marked as unmodified. Otherwise, its change is adopted by the first
+       // character of the next paragraph.
+       if (par.isChanged(par.size())) {
+               LYXERR(Debug::CHANGES,
+                  "merging par with inserted/deleted end-of-par character");
+               par.setChange(par.size(), Change(Change::UNCHANGED));
+       }
+
+       Change change = next.lookupChange(next.size());
+
+       // move the content of the second paragraph to the end of the first one
+       for (pos_type i = 0, j = pos_insert; i <= pos_end; ++i) {
+               if (moveItem(next, 0, par, j, bparams)) {
+                       ++j;
+               }
+       }
+
+       // move the change of the end-of-paragraph character
+       par.setChange(par.size(), change);
+
+       pars.erase(boost::next(pars.begin(), par_offset + 1));
+}
+
+
+pit_type Text::depthHook(pit_type pit, depth_type depth) const
+{
+       pit_type newpit = pit;
+
+       if (newpit != 0)
+               --newpit;
+
+       while (newpit != 0 && pars_[newpit].getDepth() > depth)
+               --newpit;
+
+       if (pars_[newpit].getDepth() > depth)
+               return pit;
+
+       return newpit;
+}
+
+
+pit_type Text::outerHook(pit_type par_offset) const
+{
+       Paragraph const & par = pars_[par_offset];
+
+       if (par.getDepth() == 0)
+               return pars_.size();
+       return depthHook(par_offset, depth_type(par.getDepth() - 1));
+}
+
+
+bool Text::isFirstInSequence(pit_type par_offset) const
+{
+       Paragraph const & par = pars_[par_offset];
+
+       pit_type dhook_offset = depthHook(par_offset, par.getDepth());
+
+       if (dhook_offset == par_offset)
+               return true;
+
+       Paragraph const & dhook = pars_[dhook_offset];
+
+       return dhook.layout() != par.layout()
+               || dhook.getDepth() != par.getDepth();
+}
+
+
+Font const Text::outerFont(pit_type par_offset) const
+{
+       depth_type par_depth = pars_[par_offset].getDepth();
+       FontInfo tmpfont = inherit_font;
+
+       // Resolve against environment font information
+       while (par_offset != pit_type(pars_.size())
+              && par_depth
+              && !tmpfont.resolved()) {
+               par_offset = outerHook(par_offset);
+               if (par_offset != pit_type(pars_.size())) {
+                       tmpfont.realize(pars_[par_offset].layout().font);
+                       par_depth = pars_[par_offset].getDepth();
+               }
+       }
+
+       return Font(tmpfont);
+}
+
+
+void acceptChanges(ParagraphList & pars, BufferParams const & bparams)
+{
+       pit_type pars_size = static_cast<pit_type>(pars.size());
+
+       // first, accept changes within each individual paragraph
+       // (do not consider end-of-par)
+       for (pit_type pit = 0; pit < pars_size; ++pit) {
+               if (!pars[pit].empty())   // prevent assertion failure
+                       pars[pit].acceptChanges(0, pars[pit].size());
+       }
+
+       // next, accept imaginary end-of-par characters
+       for (pit_type pit = 0; pit < pars_size; ++pit) {
+               pos_type pos = pars[pit].size();
+
+               if (pars[pit].isInserted(pos)) {
+                       pars[pit].setChange(pos, Change(Change::UNCHANGED));
+               } else if (pars[pit].isDeleted(pos)) {
+                       if (pit == pars_size - 1) {
+                               // we cannot remove a par break at the end of the last
+                               // paragraph; instead, we mark it unchanged
+                               pars[pit].setChange(pos, Change(Change::UNCHANGED));
+                       } else {
+                               mergeParagraph(bparams, pars, pit);
+                               --pit;
+                               --pars_size;
+                       }
+               }
+       }
+}
+
 InsetText const & Text::inset() const
 {
        return *owner_;
@@ -88,8 +274,8 @@ InsetText const & Text::inset() const
 void Text::readParToken(Paragraph & par, Lexer & lex,
        string const & token, Font & font, Change & change, ErrorList & errorList)
 {
-       Buffer const & buf = owner_->buffer();
-       BufferParams const & bp = buf.params();
+       Buffer * buf = const_cast<Buffer *>(&owner_->buffer());
+       BufferParams const & bp = buf->params();
 
        if (token[0] != '\\') {
                docstring dstr = lex.getDocString();
@@ -175,10 +361,10 @@ void Text::readParToken(Paragraph & par, Lexer & lex,
                }
        } else if (token == "\\numeric") {
                lex.next();
-               font.fontInfo().setNumber(font.setLyXMisc(lex.getString()));
+               font.fontInfo().setNumber(setLyXMisc(lex.getString()));
        } else if (token == "\\emph") {
                lex.next();
-               font.fontInfo().setEmph(font.setLyXMisc(lex.getString()));
+               font.fontInfo().setEmph(setLyXMisc(lex.getString()));
        } else if (token == "\\bar") {
                lex.next();
                string const tok = lex.getString();
@@ -194,33 +380,36 @@ void Text::readParToken(Paragraph & par, Lexer & lex,
                                       "`$$Token'");
        } else if (token == "\\strikeout") {
                lex.next();
-               font.fontInfo().setStrikeout(font.setLyXMisc(lex.getString()));
+               font.fontInfo().setStrikeout(setLyXMisc(lex.getString()));
        } else if (token == "\\uuline") {
                lex.next();
-               font.fontInfo().setUuline(font.setLyXMisc(lex.getString()));
+               font.fontInfo().setUuline(setLyXMisc(lex.getString()));
        } else if (token == "\\uwave") {
                lex.next();
-               font.fontInfo().setUwave(font.setLyXMisc(lex.getString()));
+               font.fontInfo().setUwave(setLyXMisc(lex.getString()));
        } else if (token == "\\noun") {
                lex.next();
-               font.fontInfo().setNoun(font.setLyXMisc(lex.getString()));
+               font.fontInfo().setNoun(setLyXMisc(lex.getString()));
        } else if (token == "\\color") {
                lex.next();
                setLyXColor(lex.getString(), font.fontInfo());
        } else if (token == "\\SpecialChar") {
-                       auto_ptr<Inset> inset;
-                       inset.reset(new InsetSpecialChar);
-                       inset->read(lex);
-                       par.insertInset(par.size(), inset.release(),
-                                       font, change);
+               auto_ptr<Inset> inset;
+               inset.reset(new InsetSpecialChar);
+               inset->read(lex);
+               inset->setBuffer(*buf);
+               par.insertInset(par.size(), inset.release(), font, change);
        } else if (token == "\\backslash") {
                par.appendChar('\\', font, change);
        } else if (token == "\\LyXTable") {
-               auto_ptr<Inset> inset(new InsetTabular(const_cast<Buffer &>(buf)));
+               auto_ptr<Inset> inset(new InsetTabular(buf));
                inset->read(lex);
                par.insertInset(par.size(), inset.release(), font, change);
        } else if (token == "\\lyxline") {
-               par.insertInset(par.size(), new InsetLine, font, change);
+               auto_ptr<Inset> inset;
+               inset.reset(new InsetLine);
+               inset->setBuffer(*buf);
+               par.insertInset(par.size(), inset.release(), font, change);
        } else if (token == "\\change_unchanged") {
                change = Change(Change::UNCHANGED);
        } else if (token == "\\change_inserted" || token == "\\change_deleted") {
@@ -296,8 +485,8 @@ class TextCompletionList : public CompletionList
 {
 public:
        ///
-       TextCompletionList(Cursor const & cur)
-               : buffer_(cur.buffer()), pos_(0)
+       TextCompletionList(Cursor const & cur, WordList const * list)
+               : buffer_(cur.buffer()), pos_(0), list_(list)
        {}
        ///
        virtual ~TextCompletionList() {}
@@ -307,12 +496,12 @@ public:
        ///
        virtual size_t size() const
        {
-               return theWordList().size();
+               return list_->size();
        }
        ///
        virtual docstring const & data(size_t idx) const
        {
-               return theWordList().word(idx);
+               return list_->word(idx);
        }
        
 private:
@@ -320,6 +509,8 @@ private:
        Buffer const * buffer_;
        ///
        size_t pos_;
+       ///
+       WordList const * list_;
 };
 
 
@@ -339,6 +530,106 @@ double Text::spacing(Paragraph const & par) const
 }
 
 
+/**
+ * This breaks a paragraph at the specified position.
+ * The new paragraph will:
+ * - Decrease depth by one (or change layout to default layout) when
+ *    keep_layout == false  
+ * - keep current depth and layout when keep_layout == true
+ */
+static void breakParagraph(Text & text, pit_type par_offset, pos_type pos, 
+                   bool keep_layout)
+{
+       BufferParams const & bparams = text.inset().buffer().params();
+       ParagraphList & pars = text.paragraphs();
+       // create a new paragraph, and insert into the list
+       ParagraphList::iterator tmp =
+               pars.insert(boost::next(pars.begin(), par_offset + 1),
+                           Paragraph());
+
+       Paragraph & par = pars[par_offset];
+
+       // remember to set the inset_owner
+       tmp->setInsetOwner(&par.inInset());
+       // without doing that we get a crash when typing <Return> at the
+       // end of a paragraph
+       tmp->setPlainOrDefaultLayout(bparams.documentClass());
+
+       // layout stays the same with latex-environments
+       if (keep_layout) {
+               tmp->setLayout(par.layout());
+               tmp->setLabelWidthString(par.params().labelWidthString());
+               tmp->params().depth(par.params().depth());
+       } else if (par.params().depth() > 0) {
+               Paragraph const & hook = pars[text.outerHook(par_offset)];
+               tmp->setLayout(hook.layout());
+               // not sure the line below is useful
+               tmp->setLabelWidthString(par.params().labelWidthString());
+               tmp->params().depth(hook.params().depth());
+       }
+
+       bool const isempty = (par.allowEmpty() && par.empty());
+
+       if (!isempty && (par.size() > pos || par.empty())) {
+               tmp->setLayout(par.layout());
+               tmp->params().align(par.params().align());
+               tmp->setLabelWidthString(par.params().labelWidthString());
+
+               tmp->params().depth(par.params().depth());
+               tmp->params().noindent(par.params().noindent());
+
+               // move everything behind the break position
+               // to the new paragraph
+
+               /* Note: if !keepempty, empty() == true, then we reach
+                * here with size() == 0. So pos_end becomes - 1. This
+                * doesn't cause problems because both loops below
+                * enforce pos <= pos_end and 0 <= pos
+                */
+               pos_type pos_end = par.size() - 1;
+
+               for (pos_type i = pos, j = 0; i <= pos_end; ++i) {
+                       if (moveItem(par, pos, *tmp, j, bparams)) {
+                               ++j;
+                       }
+               }
+       }
+
+       // Move over the end-of-par change information
+       tmp->setChange(tmp->size(), par.lookupChange(par.size()));
+       par.setChange(par.size(), Change(bparams.trackChanges ?
+                                          Change::INSERTED : Change::UNCHANGED));
+
+       if (pos) {
+               // Make sure that we keep the language when
+               // breaking paragraph.
+               if (tmp->empty()) {
+                       Font changed = tmp->getFirstFontSettings(bparams);
+                       Font const & old = par.getFontSettings(bparams, par.size());
+                       changed.setLanguage(old.language());
+                       tmp->setFont(0, changed);
+               }
+
+               return;
+       }
+
+       if (!isempty) {
+               bool const soa = par.params().startOfAppendix();
+               par.params().clear();
+               // do not lose start of appendix marker (bug 4212)
+               par.params().startOfAppendix(soa);
+               par.setPlainOrDefaultLayout(bparams.documentClass());
+       }
+
+       // layout stays the same with latex-environments
+       if (keep_layout) {
+               par.setLayout(tmp->layout());
+               par.setLabelWidthString(tmp->params().labelWidthString());
+               par.params().depth(tmp->params().depth());
+       }
+}
+
+
 void Text::breakParagraph(Cursor & cur, bool inverse_logic)
 {
        LASSERT(this == cur.text(), /**/);
@@ -375,8 +666,7 @@ void Text::breakParagraph(Cursor & cur, bool inverse_logic)
        // we need to set this before we insert the paragraph.
        bool const isempty = cpar.allowEmpty() && cpar.empty();
 
-       lyx::breakParagraph(cur.buffer()->params(), paragraphs(), cpit,
-                        cur.pos(), keep_layout);
+       lyx::breakParagraph(*this, cpit, cur.pos(), keep_layout);
 
        // After this, neither paragraph contains any rows!
 
@@ -429,8 +719,8 @@ void Text::insertStringAsLines(DocIterator const & dit, docstring const & str,
                Paragraph & par = pars_[pit];
                if (*cit == '\n') {
                        if (autoBreakRows_ && (!par.empty() || par.allowEmpty())) {
-                               lyx::breakParagraph(bparams, pars_, pit, pos,
-                                              par.layout().isEnvironment());
+                               lyx::breakParagraph(*this, pit, pos,
+                                       par.layout().isEnvironment());
                                ++pit;
                                pos = 0;
                                space_inserted = true;
@@ -627,7 +917,8 @@ void Text::insertChar(Cursor & cur, char_type c)
        cur.checkBufferStructure();
 
 //             cur.updateFlags(Update::Force);
-       bool boundary = tm.isRTLBoundary(cur.pit(), cur.pos() + 1);
+       bool boundary = cur.boundary()
+               || tm.isRTLBoundary(cur.pit(), cur.pos() + 1);
        setCursor(cur, cur.pit(), cur.pos() + 1, false, boundary);
        charInserted(cur);
 }
@@ -639,12 +930,11 @@ void Text::charInserted(Cursor & cur)
 
        // Here we call finishUndo for every 20 characters inserted.
        // This is from my experience how emacs does it. (Lgb)
-       static unsigned int counter;
-       if (counter < 20) {
-               ++counter;
+       if (undo_counter_ < 20) {
+               ++undo_counter_;
        } else {
                cur.finishUndo();
-               counter = 0;
+               undo_counter_ = 0;
        }
 
        // register word if a non-letter was entered
@@ -835,9 +1125,11 @@ void Text::selectWord(Cursor & cur, word_location loc)
                setCursor(cur, from.pit(), from.pos());
        if (to == from)
                return;
-       cur.resetAnchor();
+       if (!cur.selection())
+               cur.resetAnchor();
        setCursor(cur, to.pit(), to.pos());
        cur.setSelection();
+       cur.setWordSelection(true);
 }
 
 
@@ -1329,6 +1621,9 @@ bool Text::dissolveInset(Cursor & cur)
                // this is the least that needs to be done (bug 6003)
                // in the above case, pasteParagraphList handles this
                cur.buffer()->updateLabels();
+
+       // Ensure the current language is set correctly (bug 6292)
+       cur.text()->setCursor(cur, cur.pit(), cur.pos());
        cur.clearSelection();
        cur.resetAnchor();
        return true;
@@ -1397,8 +1692,6 @@ bool Text::read(Lexer & lex,
                        readParagraph(pars_.back(), lex, errorList);
 
                        // register the words in the global word list
-                       CursorSlice sl = CursorSlice(*insetPtr);
-                       sl.pit() = pars_.size() - 1;
                        pars_.back().updateWords();
                } else if (token == "\\begin_deeper") {
                        ++depth;
@@ -1697,7 +1990,8 @@ bool Text::completionSupported(Cursor const & cur) const
 
 CompletionList const * Text::createCompletionList(Cursor const & cur) const
 {
-       return new TextCompletionList(cur);
+       WordList const * list = theWordList(*cur.getFont().language());
+       return new TextCompletionList(cur, list);
 }