]> git.lyx.org Git - lyx.git/blobdiff - src/Buffer.cpp
More notes.
[lyx.git] / src / Buffer.cpp
index 1e526fa9da227f61b4cbdcdf9dbeaae1977c6182..bd7305701785929e0afe9bc9cb65aa89cb375e28 100644 (file)
@@ -42,6 +42,7 @@
 #include "Lexer.h"
 #include "LyXAction.h"
 #include "LyX.h"
+#include "LyXFunc.h"
 #include "LyXRC.h"
 #include "LyXVC.h"
 #include "output_docbook.h"
@@ -49,7 +50,6 @@
 #include "output_latex.h"
 #include "output_xhtml.h"
 #include "output_plaintext.h"
-#include "paragraph_funcs.h"
 #include "Paragraph.h"
 #include "ParagraphParameters.h"
 #include "ParIterator.h"
@@ -69,6 +69,7 @@
 
 #include "insets/InsetBibitem.h"
 #include "insets/InsetBibtex.h"
+#include "insets/InsetBranch.h"
 #include "insets/InsetInclude.h"
 #include "insets/InsetText.h"
 
@@ -126,7 +127,7 @@ namespace {
 
 // Do not remove the comment below, so we get merge conflict in
 // independent branches. Instead add your own.
-int const LYX_FORMAT = 362;  // jspitzm: support applemac encoding
+int const LYX_FORMAT = 374; // rgheck: HTML output options
 
 typedef map<string, bool> DepClean;
 typedef map<docstring, pair<InsetLabel const *, Buffer::References> > RefCache;
@@ -146,7 +147,7 @@ class BufferSet : public std::set<Buffer const *> {};
 class Buffer::Impl
 {
 public:
-       Impl(Buffer & parent, FileName const & file, bool readonly);
+       Impl(Buffer & parent, FileName const & file, bool readonly, Buffer const * cloned_buffer);
 
        ~Impl()
        {
@@ -252,10 +253,20 @@ public:
                return parent_buffer; 
        }
        ///
-       void setParent(Buffer const * pb) { parent_buffer = pb; }
+       void setParent(Buffer const * pb) {
+               if (parent_buffer && pb && parent_buffer != pb)
+                       LYXERR0("Warning: a buffer should not have two parents!");
+               parent_buffer = pb;
+       }
+
+       /// If non zero, this buffer is a clone of existing buffer \p cloned_buffer_
+       /// This one is useful for preview detached in a thread.
+       Buffer const * cloned_buffer_;
+
 private:
        /// So we can force access via the accessors.
        mutable Buffer const * parent_buffer;
+
 };
 
 
@@ -278,26 +289,36 @@ static FileName createBufferTmpDir()
 }
 
 
-Buffer::Impl::Impl(Buffer & parent, FileName const & file, bool readonly_)
+Buffer::Impl::Impl(Buffer & parent, FileName const & file, bool readonly_,
+       Buffer const * cloned_buffer)
        : lyx_clean(true), bak_clean(true), unnamed(false),
          read_only(readonly_), filename(file), file_fully_loaded(false),
          toc_backend(&parent), macro_lock(false), timestamp_(0),
          checksum_(0), wa_(0), undo_(parent), bibinfoCacheValid_(false),
-         parent_buffer(0)
+         cloned_buffer_(cloned_buffer), parent_buffer(0)
 {
-       temppath = createBufferTmpDir();
-       lyxvc.setBuffer(&parent);
-       if (use_gui)
-               wa_ = new frontend::WorkAreaManager;
+       if (!cloned_buffer_) {
+               temppath = createBufferTmpDir();
+               lyxvc.setBuffer(&parent);
+               if (use_gui)
+                       wa_ = new frontend::WorkAreaManager;
+               return;
+       }
+       temppath = cloned_buffer_->d->temppath;
+       file_fully_loaded = true;
+       params = cloned_buffer_->d->params;
 }
 
 
-Buffer::Buffer(string const & file, bool readonly)
-       : d(new Impl(*this, FileName(file), readonly)), gui_(0)
+Buffer::Buffer(string const & file, bool readonly, Buffer const * cloned_buffer)
+       : d(new Impl(*this, FileName(file), readonly, cloned_buffer)), gui_(0)
 {
        LYXERR(Debug::INFO, "Buffer::Buffer()");
-
-       d->inset = new InsetText(*this);
+       if (cloned_buffer) {
+               d->inset = static_cast<InsetText *>(cloned_buffer->d->inset->clone());
+               d->inset->setBuffer(*this);
+       } else 
+               d->inset = new InsetText(this);
        d->inset->setAutoBreakRows(true);
        d->inset->getText(0)->setMacrocontextPosition(par_iterator_begin());
 }
@@ -312,7 +333,7 @@ Buffer::~Buffer()
        // GuiView already destroyed
        gui_ = 0;
 
-       if (d->unnamed && d->filename.extension() == "internal") {
+       if (isInternal()) {
                // No need to do additional cleanups for internal buffer.
                delete d;
                return;
@@ -328,11 +349,17 @@ Buffer::~Buffer()
                        theBufferList().releaseChild(this, child);
        }
 
+       if (!isClean()) {
+               docstring msg = _("LyX attempted to close a document that had unsaved changes!\n");
+               msg += emergencyWrite();
+               Alert::warning(_("Attempting to close changed document!"), msg);
+       }
+               
        // clear references to children in macro tables
        d->children_positions.clear();
        d->position_to_children.clear();
 
-       if (!d->temppath.destroyDirectory()) {
+       if (!d->cloned_buffer_ && !d->temppath.destroyDirectory()) {
                Alert::warning(_("Could not remove temporary directory"),
                        bformat(_("Could not remove the temporary directory %1$s"),
                        from_utf8(d->temppath.absFilename())));
@@ -345,6 +372,18 @@ Buffer::~Buffer()
 }
 
 
+Buffer * Buffer::clone() const
+{
+       return new Buffer(fileName().absFilename(), false, this);
+}
+
+
+bool Buffer::isClone() const
+{
+       return d->cloned_buffer_;
+}
+
+
 void Buffer::changed() const
 {
        if (d->wa_)
@@ -439,12 +478,29 @@ Undo & Buffer::undo()
 
 string Buffer::latexName(bool const no_path) const
 {
-       FileName latex_name = makeLatexName(d->filename);
+       FileName latex_name =
+               makeLatexName(exportFileName());
        return no_path ? latex_name.onlyFileName()
                : latex_name.absFilename();
 }
 
 
+FileName Buffer::exportFileName() const
+{
+       docstring const branch_suffix =
+               params().branchlist().getFilenameSuffix();
+       if (branch_suffix.empty())
+               return fileName();
+
+       string const name = fileName().onlyFileNameWithoutExt()
+               + to_utf8(branch_suffix);
+       FileName res(fileName().onlyPath().absFilename() + "/" + name);
+       res.changeExtension(fileName().extension());
+
+       return res;
+}
+
+
 string Buffer::logName(LogType * type) const
 {
        string const filename = latexName(false);
@@ -467,14 +523,31 @@ string Buffer::logName(LogType * type) const
                        changeExtension(filename,
                                        formats.extension(bufferFormat()) + ".out"))));
 
-       // If no Latex log or Build log is newer, show Build log
+       // Also consider the master buffer log file
+       FileName masterfname = fname;
+       LogType mtype;
+       if (masterBuffer() != this) {
+               string const mlogfile = masterBuffer()->logName(&mtype);
+               masterfname = FileName(mlogfile);
+       }
 
+       // If no Latex log or Build log is newer, show Build log
        if (bname.exists() &&
-           (!fname.exists() || fname.lastModified() < bname.lastModified())) {
+           ((!fname.exists() && !masterfname.exists())
+            || (fname.lastModified() < bname.lastModified()
+                && masterfname.lastModified() < bname.lastModified()))) {
                LYXERR(Debug::FILES, "Log name calculated as: " << bname);
                if (type)
                        *type = buildlog;
                return bname.absFilename();
+       // If we have a newer master file log or only a master log, show this
+       } else if (fname != masterfname
+                  && (!fname.exists() && (masterfname.exists()
+                  || fname.lastModified() < masterfname.lastModified()))) {
+               LYXERR(Debug::FILES, "Log name calculated as: " << masterfname);
+               if (type)
+                       *type = mtype;
+               return masterfname.absFilename();
        }
        LYXERR(Debug::FILES, "Log name calculated as: " << fname);
        if (type)
@@ -653,67 +726,20 @@ bool Buffer::readDocument(Lexer & lex)
                        }
                }
        }
+       
+       // assure we have a default index
+       params().indiceslist().addDefault(B_("Index"));
 
        // read main text
-       bool const res = text().read(*this, lex, errorList, d->inset);
+       bool const res = text().read(lex, errorList, d->inset);
 
+       usermacros.clear();
        updateMacros();
        updateMacroInstances();
        return res;
 }
 
 
-// needed to insert the selection
-void Buffer::insertStringAsLines(ParagraphList & pars,
-       pit_type & pit, pos_type & pos,
-       Font const & fn, docstring const & str, bool autobreakrows)
-{
-       Font font = fn;
-
-       // insert the string, don't insert doublespace
-       bool space_inserted = true;
-       for (docstring::const_iterator cit = str.begin();
-           cit != str.end(); ++cit) {
-               Paragraph & par = pars[pit];
-               if (*cit == '\n') {
-                       if (autobreakrows && (!par.empty() || par.allowEmpty())) {
-                               breakParagraph(params(), pars, pit, pos,
-                                              par.layout().isEnvironment());
-                               ++pit;
-                               pos = 0;
-                               space_inserted = true;
-                       } else {
-                               continue;
-                       }
-                       // do not insert consecutive spaces if !free_spacing
-               } else if ((*cit == ' ' || *cit == '\t') &&
-                          space_inserted && !par.isFreeSpacing()) {
-                       continue;
-               } else if (*cit == '\t') {
-                       if (!par.isFreeSpacing()) {
-                               // tabs are like spaces here
-                               par.insertChar(pos, ' ', font, params().trackChanges);
-                               ++pos;
-                               space_inserted = true;
-                       } else {
-                               par.insertChar(pos, *cit, font, params().trackChanges);
-                               ++pos;
-                               space_inserted = true;
-                       }
-               } else if (!isPrintable(*cit)) {
-                       // Ignore unprintables
-                       continue;
-               } else {
-                       // just insert the character
-                       par.insertChar(pos, *cit, font, params().trackChanges);
-                       ++pos;
-                       space_inserted = (*cit == ' ');
-               }
-
-       }
-}
-
-
 bool Buffer::readString(string const & s)
 {
        params().compressed = false;
@@ -959,6 +985,63 @@ bool Buffer::writeFile(FileName const & fname) const
 }
 
 
+docstring Buffer::emergencyWrite()
+{
+       // No need to save if the buffer has not changed.
+       if (isClean())
+               return docstring();
+
+       string const doc = isUnnamed() ? onlyFilename(absFileName()) : absFileName();
+
+       docstring user_message = bformat(
+               _("LyX: Attempting to save document %1$s\n"), from_utf8(doc));
+
+       // We try to save three places:
+       // 1) Same place as document. Unless it is an unnamed doc.
+       if (!isUnnamed()) {
+               string s = absFileName();
+               s += ".emergency";
+               LYXERR0("  " << s);
+               if (writeFile(FileName(s))) {
+                       markClean();
+                       user_message += bformat(_("  Saved to %1$s. Phew.\n"), from_utf8(s));
+                       return user_message;
+               } else {
+                       user_message += _("  Save failed! Trying again...\n");
+               }
+       }
+
+       // 2) In HOME directory.
+       string s = addName(package().home_dir().absFilename(), absFileName());
+       s += ".emergency";
+       lyxerr << ' ' << s << endl;
+       if (writeFile(FileName(s))) {
+               markClean();
+               user_message += bformat(_("  Saved to %1$s. Phew.\n"), from_utf8(s));
+               return user_message;
+       }
+
+       user_message += _("  Save failed! Trying yet again...\n");
+
+       // 3) In "/tmp" directory.
+       // MakeAbsPath to prepend the current
+       // drive letter on OS/2
+       s = addName(package().temp_dir().absFilename(), absFileName());
+       s += ".emergency";
+       lyxerr << ' ' << s << endl;
+       if (writeFile(FileName(s))) {
+               markClean();
+               user_message += bformat(_("  Saved to %1$s. Phew.\n"), from_utf8(s));
+               return user_message;
+       }
+
+       user_message += _("  Save failed! Bummer. Document is lost.");
+       // Don't try again.
+       markClean();
+       return user_message;
+}
+
+
 bool Buffer::write(ostream & ofs) const
 {
 #ifdef HAVE_LOCALE
@@ -979,7 +1062,7 @@ bool Buffer::write(ostream & ofs) const
        AuthorList::Authors::const_iterator a_it = params().authors().begin();
        AuthorList::Authors::const_iterator a_end = params().authors().end();
        for (; a_it != a_end; ++a_it)
-               a_it->second.setUsed(false);
+               a_it->setUsed(false);
 
        ParIterator const end = const_cast<Buffer *>(this)->par_iterator_end();
        ParIterator it = const_cast<Buffer *>(this)->par_iterator_begin();
@@ -993,7 +1076,7 @@ bool Buffer::write(ostream & ofs) const
 
        // write the text
        ofs << "\n\\begin_body\n";
-       text().write(*this, ofs);
+       text().write(ofs);
        ofs << "\n\\end_body\n";
 
        // Write marker that shows file is complete
@@ -1333,7 +1416,7 @@ void Buffer::writeDocBookSource(odocstream & os, string const & fname,
 
        sgml::openTag(os, top);
        os << '\n';
-       docbookParagraphs(paragraphs(), *this, os, runparams);
+       docbookParagraphs(text(), *this, os, runparams);
        sgml::closeTag(os, top_element);
 }
 
@@ -1342,7 +1425,7 @@ void Buffer::makeLyXHTMLFile(FileName const & fname,
                              OutputParams const & runparams,
                              bool const body_only) const
 {
-       LYXERR(Debug::LATEX, "makeLYXHTMLFile...");
+       LYXERR(Debug::LATEX, "makeLyXHTMLFile...");
 
        ofdocstream ofs;
        if (!openFileWrite(ofs, fname))
@@ -1362,14 +1445,15 @@ void Buffer::writeLyXHTMLSource(odocstream & os,
 {
        LaTeXFeatures features(*this, params(), runparams);
        validate(features);
+       updateLabels(UpdateMaster, true);
 
        d->texrow.reset();
 
        if (!only_body) {
-               os << "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\"" <<
-                       " \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n";
+               os << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
+               os << "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN\" \"http://www.w3.org/TR/MathML2/dtd/xhtml-math11-f.dtd\">\n";
                // FIXME Language should be set properly.
-               os << "<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\">\n";
+               os << "<html xmlns=\"http://www.w3.org/1999/xhtml\">\n";
                // FIXME Header
                os << "<head>\n";
                // FIXME Presumably need to set this right
@@ -1377,21 +1461,24 @@ void Buffer::writeLyXHTMLSource(odocstream & os,
                // FIXME Get this during validation? What about other meta-data?
                os << "<title>TBA</title>\n";
 
-               os << features.getTClassHTMLPreamble();
-
-               os << '\n';
+               os << "\n<!-- Text Class Preamble -->\n"
+                       << features.getTClassHTMLPreamble()
+                       << "\n<!-- Premable Snippets -->\n"
+                       << from_utf8(features.getPreambleSnippets());
 
+               os << "\n<!-- Layout-provided Styles -->\n";
                docstring const styleinfo = features.getTClassHTMLStyles();
                if (!styleinfo.empty()) {
-                       os << "<style type='text/css'>\n";
-                       os << styleinfo;
-                       os << "</style>\n";
+                       os << "<style type='text/css'>\n"
+                               << styleinfo
+                               << "</style>\n";
                }
                os << "</head>\n<body>\n";
        }
 
+       XHTMLStream xs(os);
        params().documentClass().counters().reset();
-       xhtmlParagraphs(paragraphs(), *this, os, runparams);
+       xhtmlParagraphs(text(), *this, xs, runparams);
        if (!only_body)
                os << "</body>\n</html>\n";
 }
@@ -1582,36 +1669,86 @@ void Buffer::markDepClean(string const & name)
 }
 
 
+bool Buffer::isExportableFormat(string const & format) const
+{
+               typedef vector<Format const *> Formats;
+               Formats formats;
+               formats = exportableFormats(true);
+               Formats::const_iterator fit = formats.begin();
+               Formats::const_iterator end = formats.end();
+               for (; fit != end ; ++fit) {
+                       if ((*fit)->name() == format)
+                               return true;
+               }
+               return false;
+}
+
+
 bool Buffer::getStatus(FuncRequest const & cmd, FuncStatus & flag)
 {
+       if (isInternal()) {
+               // FIXME? if there is an Buffer LFUN that can be dispatched even
+               // if internal, put a switch '(cmd.action)' here.
+               return false;
+       }
+
+       bool enable = true;
+
        switch (cmd.action) {
+
+               case LFUN_BUFFER_TOGGLE_READ_ONLY:
+                       flag.setOnOff(isReadonly());
+                       break;
+
+               // FIXME: There is need for a command-line import.
+               //case LFUN_BUFFER_IMPORT:
+
+               case LFUN_BUFFER_AUTO_SAVE:
+                       break;
+
+               case LFUN_BUFFER_EXPORT_CUSTOM:
+                       // FIXME: Nothing to check here?
+                       break;
+
                case LFUN_BUFFER_EXPORT: {
                        docstring const arg = cmd.argument();
-                       bool enable = arg == "custom" || isExportable(to_utf8(arg));
+                       enable = arg == "custom" || isExportable(to_utf8(arg));
                        if (!enable)
                                flag.message(bformat(
                                        _("Don't know how to export to format: %1$s"), arg));
-                       flag.setEnabled(enable);
                        break;
                }
 
+               case LFUN_BUFFER_CHKTEX:
+                       enable = isLatex() && !lyxrc.chktex_command.empty();
+                       break;
+
+               case LFUN_BUILD_PROGRAM:
+                       enable = isExportable("program");
+                       break;
+
                case LFUN_BRANCH_ACTIVATE: 
                case LFUN_BRANCH_DEACTIVATE: {
-               BranchList const & branchList = params().branchlist();
-               docstring const branchName = cmd.argument();
-               flag.setEnabled(!branchName.empty()
-                               && branchList.find(branchName));
+                       BranchList const & branchList = params().branchlist();
+                       docstring const branchName = cmd.argument();
+                       enable = !branchName.empty() && branchList.find(branchName);
                        break;
                }
 
+               case LFUN_BRANCH_ADD:
+               case LFUN_BRANCHES_RENAME:
                case LFUN_BUFFER_PRINT:
                        // if no Buffer is present, then of course we won't be called!
-                       flag.setEnabled(true);
+                       break;
+
+               case LFUN_BUFFER_LANGUAGE:
+                       enable = !isReadonly();
                        break;
 
                default:
                        return false;
        }
+       flag.setEnabled(enable);
        return true;
 }
 
@@ -1627,12 +1764,27 @@ void Buffer::dispatch(string const & command, DispatchResult & result)
 // whether we have a GUI or not. The boolean use_gui holds this information.
 void Buffer::dispatch(FuncRequest const & func, DispatchResult & dr)
 {
+       if (isInternal()) {
+               // FIXME? if there is an Buffer LFUN that can be dispatched even
+               // if internal, put a switch '(cmd.action)' here.
+               dr.dispatched(false);
+               return;
+       }
+       string const argument = to_utf8(func.argument());
        // We'll set this back to false if need be.
        bool dispatched = true;
+       undo().beginUndoGroup();
 
        switch (func.action) {
+       case LFUN_BUFFER_TOGGLE_READ_ONLY:
+               if (lyxvc().inUse())
+                       lyxvc().toggleReadOnly();
+               else
+                       setReadonly(!isReadonly());
+               break;
+
        case LFUN_BUFFER_EXPORT: {
-               bool success = doExport(to_utf8(func.argument()), false);
+               bool success = doExport(argument, false);
                dr.setError(success);
                if (!success)
                        dr.setMessage(bformat(_("Error exporting to format: %1$s."), 
@@ -1640,6 +1792,90 @@ void Buffer::dispatch(FuncRequest const & func, DispatchResult & dr)
                break;
        }
 
+       case LFUN_BUILD_PROGRAM:
+               doExport("program", true);
+               break;
+
+       case LFUN_BUFFER_CHKTEX:
+               runChktex();
+               break;
+
+       case LFUN_BUFFER_EXPORT_CUSTOM: {
+               string format_name;
+               string command = split(argument, format_name, ' ');
+               Format const * format = formats.getFormat(format_name);
+               if (!format) {
+                       lyxerr << "Format \"" << format_name
+                               << "\" not recognized!"
+                               << endl;
+                       break;
+               }
+
+               // The name of the file created by the conversion process
+               string filename;
+
+               // Output to filename
+               if (format->name() == "lyx") {
+                       string const latexname = latexName(false);
+                       filename = changeExtension(latexname,
+                               format->extension());
+                       filename = addName(temppath(), filename);
+
+                       if (!writeFile(FileName(filename)))
+                               break;
+
+               } else {
+                       doExport(format_name, true, filename);
+               }
+
+               // Substitute $$FName for filename
+               if (!contains(command, "$$FName"))
+                       command = "( " + command + " ) < $$FName";
+               command = subst(command, "$$FName", filename);
+
+               // Execute the command in the background
+               Systemcall call;
+               call.startscript(Systemcall::DontWait, command);
+               break;
+       }
+
+       // FIXME: There is need for a command-line import.
+       /*
+       case LFUN_BUFFER_IMPORT:
+               doImport(argument);
+               break;
+       */
+
+       case LFUN_BUFFER_AUTO_SAVE:
+               autoSave();
+               break;
+
+       case LFUN_BRANCH_ADD: {
+               docstring const branch_name = func.argument();
+               if (branch_name.empty()) {
+                       dispatched = false;
+                       break;
+               }
+               BranchList & branch_list = params().branchlist();
+               Branch * branch = branch_list.find(branch_name);
+               if (branch) {
+                       LYXERR0("Branch " << branch_name << " already exists.");
+                       dr.setError(true);
+                       docstring const msg = 
+                               bformat(_("Branch \"%1$s\" already exists."), branch_name);
+                       dr.setMessage(msg);
+               } else {
+                       branch_list.add(branch_name);
+                       branch = branch_list.find(branch_name);
+                       string const x11hexname = X11hexname(branch->color());
+                       docstring const str = branch_name + ' ' + from_ascii(x11hexname);
+                       lyx::dispatch(FuncRequest(LFUN_SET_COLOR, str));        
+                       dr.setError(false);
+                       dr.update(Update::Force);
+               }
+               break;
+       }
+
        case LFUN_BRANCH_ACTIVATE:
        case LFUN_BRANCH_DEACTIVATE: {
                BranchList & branchList = params().branchlist();
@@ -1664,6 +1900,41 @@ void Buffer::dispatch(FuncRequest const & func, DispatchResult & dr)
                break;
        }
 
+       case LFUN_BRANCHES_RENAME: {
+               if (func.argument().empty())
+                       break;
+
+               docstring const oldname = from_utf8(func.getArg(0));
+               docstring const newname = from_utf8(func.getArg(1));
+               InsetIterator it  = inset_iterator_begin(inset());
+               InsetIterator const end = inset_iterator_end(inset());
+               bool success = false;
+               for (; it != end; ++it) {
+                       if (it->lyxCode() == BRANCH_CODE) {
+                               InsetBranch & ins = static_cast<InsetBranch &>(*it);
+                               if (ins.branch() == oldname) {
+                                       undo().recordUndo(it);
+                                       ins.rename(newname);
+                                       success = true;
+                                       continue;
+                               }
+                       }
+                       if (it->lyxCode() == INCLUDE_CODE) {
+                               // get buffer of external file
+                               InsetInclude const & ins =
+                                       static_cast<InsetInclude const &>(*it);
+                               Buffer * child = ins.getChildBuffer();
+                               if (!child)
+                                       continue;
+                               child->dispatch(func, dr);
+                       }
+               }
+
+               if (success)
+                       dr.update(Update::Force);
+               break;
+       }
+
        case LFUN_BUFFER_PRINT: {
                // we'll assume there's a problem until we succeed
                dr.setError(true); 
@@ -1778,11 +2049,22 @@ void Buffer::dispatch(FuncRequest const & func, DispatchResult & dr)
                break;
        }
 
+       case LFUN_BUFFER_LANGUAGE: {
+               Language const * oldL = params().language;
+               Language const * newL = languages.getLanguage(argument);
+               if (!newL || oldL == newL)
+                       break;
+               if (oldL->rightToLeft() == newL->rightToLeft() && !isMultiLingual())
+                       changeLanguage(oldL, newL);
+               break;
+       }
+
        default:
                dispatched = false;
                break;
        }
        dr.dispatched(dispatched);
+       undo().endUndoGroup();
 }
 
 
@@ -1932,7 +2214,17 @@ bool Buffer::isUnnamed() const
 }
 
 
-// FIXME: this function should be moved to buffer_pimpl.C
+/// \note
+/// Don't check unnamed, here: isInternal() is used in
+/// newBuffer(), where the unnamed flag has not been set by anyone
+/// yet. Also, for an internal buffer, there should be no need for
+/// retrieving fileName() nor for checking if it is unnamed or not.
+bool Buffer::isInternal() const
+{
+       return fileName().extension() == "internal";
+}
+
+
 void Buffer::markDirty()
 {
        if (d->lyx_clean) {
@@ -2039,22 +2331,30 @@ DocIterator Buffer::firstChildPosition(Buffer const * child)
 }
 
 
-std::vector<Buffer *> Buffer::getChildren() const
+void Buffer::getChildren(std::vector<Buffer *> & clist, bool grand_children) const
 {
-       std::vector<Buffer *> clist;
        // loop over children
        Impl::BufferPositionMap::iterator it = d->children_positions.begin();
        Impl::BufferPositionMap::iterator end = d->children_positions.end();
        for (; it != end; ++it) {
                Buffer * child = const_cast<Buffer *>(it->first);
                clist.push_back(child);
-               // there might be grandchildren
-               std::vector<Buffer *> glist = child->getChildren();
-               for (vector<Buffer *>::const_iterator git = glist.begin();
-                    git != glist.end(); ++git)
-                       clist.push_back(*git);
+               if (grand_children) {
+                       // there might be grandchildren
+                       std::vector<Buffer *> glist = child->getChildren();
+                       for (vector<Buffer *>::const_iterator git = glist.begin();
+                                git != glist.end(); ++git)
+                               clist.push_back(*git);
+               }
        }
-       return clist;
+}
+
+
+std::vector<Buffer *> Buffer::getChildren(bool grand_children) const
+{
+       std::vector<Buffer *> v;
+       getChildren(v, grand_children);
+       return v;
 }
 
 
@@ -2265,7 +2565,7 @@ void Buffer::updateMacros(DocIterator & it, DocIterator & scope) const
                        // get macro data
                        MathMacroTemplate & macroTemplate =
                                static_cast<MathMacroTemplate &>(*iit->inset);
-                       MacroContext mc(*this, it);
+                       MacroContext mc(this, it);
                        macroTemplate.updateToContext(mc);
 
                        // valid?
@@ -2277,8 +2577,10 @@ void Buffer::updateMacros(DocIterator & it, DocIterator & scope) const
                                continue;
 
                        // register macro
+                       // FIXME (Abdel), I don't understandt why we pass 'it' here
+                       // instead of 'macroTemplate' defined above... is this correct?
                        d->macros[macroTemplate.name()][it] =
-                               Impl::ScopeMacro(scope, MacroData(*this, it));
+                               Impl::ScopeMacro(scope, MacroData(const_cast<Buffer *>(this), it));
                }
 
                // next paragraph
@@ -2311,25 +2613,51 @@ void Buffer::updateMacros() const
 }
 
 
+void Buffer::getUsedBranches(std::list<docstring> & result, bool const from_master) const
+{
+       InsetIterator it  = inset_iterator_begin(inset());
+       InsetIterator const end = inset_iterator_end(inset());
+       for (; it != end; ++it) {
+               if (it->lyxCode() == BRANCH_CODE) {
+                       InsetBranch & br = static_cast<InsetBranch &>(*it);
+                       docstring const name = br.branch();
+                       if (!from_master && !params().branchlist().find(name))
+                               result.push_back(name);
+                       else if (from_master && !masterBuffer()->params().branchlist().find(name))
+                               result.push_back(name);
+                       continue;
+               }
+               if (it->lyxCode() == INCLUDE_CODE) {
+                       // get buffer of external file
+                       InsetInclude const & ins =
+                               static_cast<InsetInclude const &>(*it);
+                       Buffer * child = ins.getChildBuffer();
+                       if (!child)
+                               continue;
+                       child->getUsedBranches(result, true);
+               }
+       }
+       // remove duplicates
+       result.unique();
+}
+
+
 void Buffer::updateMacroInstances() const
 {
        LYXERR(Debug::MACROS, "updateMacroInstances for "
                << d->filename.onlyFileName());
        DocIterator it = doc_iterator_begin(this);
-       DocIterator end = doc_iterator_end(this);
-       for (; it != end; it.forwardPos()) {
-               // look for MathData cells in InsetMathNest insets
-               Inset * inset = it.nextInset();
-               if (!inset)
-                       continue;
-
-               InsetMath * minset = inset->asInsetMath();
+       it.forwardInset();
+       DocIterator const end = doc_iterator_end(this);
+       for (; it != end; it.forwardInset()) {
+               // look for MathData cells in InsetMathNest insets
+               InsetMath * minset = it.nextInset()->asInsetMath();
                if (!minset)
                        continue;
 
                // update macro in all cells of the InsetMathNest
                DocIterator::idx_type n = minset->nargs();
-               MacroContext mc = MacroContext(*this, it);
+               MacroContext mc = MacroContext(this, it);
                for (DocIterator::idx_type i = 0; i < n; ++i) {
                        MathData & data = minset->cell(i);
                        data.updateMacros(0, mc);
@@ -2509,7 +2837,7 @@ void Buffer::getSourceCode(odocstream & os, pit_type par_begin,
                texrow.newline();
                // output paragraphs
                if (isDocBook())
-                       docbookParagraphs(paragraphs(), *this, os, runparams);
+                       docbookParagraphs(text(), *this, os, runparams);
                else 
                        // latex or literate
                        latexParagraphs(*this, text(), os, texrow, runparams);
@@ -2543,10 +2871,10 @@ void Buffer::structureChanged() const
 }
 
 
-void Buffer::errors(string const & err) const
+void Buffer::errors(string const & err, bool from_master) const
 {
        if (gui_)
-               gui_->errors(err);
+               gui_->errors(err, from_master);
 }
 
 
@@ -2628,6 +2956,15 @@ private:
 
 int AutoSaveBuffer::generateChild()
 {
+#if defined(__APPLE__)
+       /* FIXME fork() is not usable for autosave on Mac OS X 10.6 (snow leopard) 
+        *   We should use something else like threads.
+        *
+        * Since I do not know how to determine at run time what is the OS X
+        * version, I just disable forking altogether for now (JMarc)
+        */
+       pid_t const pid = -1;
+#else
        // tmp_ret will be located (usually) in /tmp
        // will that be a problem?
        // Note that this calls ForkedCalls::fork(), so it's
@@ -2637,6 +2974,7 @@ int AutoSaveBuffer::generateChild()
        // you should set pid to -1, and comment out the fork.
        if (pid != 0 && pid != -1)
                return pid;
+#endif
 
        // pid = -1 signifies that lyx was unable
        // to fork. But we will do the save
@@ -2775,14 +3113,18 @@ bool Buffer::doExport(string const & format, bool put_in_tempdir,
                                path = p;
                        }
                }
-               if (!path.empty())
-                       runparams.flavor = theConverters().getFlavor(path);
-               else {
-                       Alert::error(_("Couldn't export file"),
-                               bformat(_("No information for exporting the format %1$s."),
-                                  formats.prettyName(format)));
+               if (path.empty()) {
+                       if (!put_in_tempdir) {
+                               // Only show this alert if this is an export to a non-temporary
+                               // file (not for previewing).
+                               Alert::error(_("Couldn't export file"), bformat(
+                                       _("No information for exporting the format %1$s."),
+                                       formats.prettyName(format)));
+                       }
                        return false;
                }
+               runparams.flavor = theConverters().getFlavor(path);
+
        } else {
                backend_format = format;
                // FIXME: Don't hardcode format names here, but use a flag
@@ -2799,12 +3141,15 @@ bool Buffer::doExport(string const & format, bool put_in_tempdir,
        updateMacroInstances();
 
        // Plain text backend
-       if (backend_format == "text")
+       if (backend_format == "text") {
+               runparams.flavor = OutputParams::TEXT;
                writePlaintextFile(*this, FileName(filename), runparams);
-       // no backend
-       else if (backend_format == "xhtml")
+       }
+       // HTML backend
+       else if (backend_format == "xhtml") {
+               runparams.flavor = OutputParams::HTML;
                makeLyXHTMLFile(FileName(filename), runparams);
-       else if (backend_format == "lyx")
+       }       else if (backend_format == "lyx")
                writeFile(FileName(filename));
        // Docbook backend
        else if (isDocBook()) {
@@ -2836,8 +3181,14 @@ bool Buffer::doExport(string const & format, bool put_in_tempdir,
                tmp_result_file, FileName(absFileName()), backend_format, format,
                error_list);
        // Emit the signal to show the error list.
-       if (format != backend_format)
+       if (format != backend_format) {
                errors(error_type);
+               // also to the children, in case of master-buffer-view
+               std::vector<Buffer *> clist = getChildren();
+               for (vector<Buffer *>::const_iterator cit = clist.begin();
+                    cit != clist.end(); ++cit)
+                       (*cit)->errors(error_type, true);
+       }
        if (!success)
                return false;
 
@@ -2846,7 +3197,7 @@ bool Buffer::doExport(string const & format, bool put_in_tempdir,
                return true;
        }
 
-       result_file = changeExtension(absFileName(), ext);
+       result_file = changeExtension(exportFileName().absFilename(), ext);
        // We need to copy referenced files (e. g. included graphics
        // if format == "dvi") to the result dir.
        vector<ExportedFile> const files =
@@ -2910,7 +3261,7 @@ bool Buffer::isExportable(string const & format) const
 
 vector<Format const *> Buffer::exportableFormats(bool only_viewable) const
 {
-       vector<string> backs = backends();
+       vector<string> const backs = backends();
        vector<Format const *> result =
                theConverters().getReachable(backs[0], only_viewable, true);
        for (vector<string>::const_iterator it = backs.begin() + 1;
@@ -2926,14 +3277,12 @@ vector<Format const *> Buffer::exportableFormats(bool only_viewable) const
 vector<string> Buffer::backends() const
 {
        vector<string> v;
-       if (params().baseClass()->isTeXClassAvailable()) {
-               v.push_back(bufferFormat());
-               // FIXME: Don't hardcode format names here, but use a flag
-               if (v.back() == "latex")
-                       v.push_back("pdflatex");
-       }
-       v.push_back("text");
+       v.push_back(bufferFormat());
+       // FIXME: Don't hardcode format names here, but use a flag
+       if (v.back() == "latex")
+               v.push_back("pdflatex");
        v.push_back("xhtml");
+       v.push_back("text");
        v.push_back("lyx");
        return v;
 }
@@ -2963,11 +3312,33 @@ bool Buffer::readFileHelper(FileName const & s)
                                      _("&Recover"),  _("&Load Original"),
                                      _("&Cancel")))
                {
-               case 0:
+               case 0: {
                        // the file is not saved if we load the emergency file.
                        markDirty();
-                       return readFile(e);
+                       docstring str;
+                       bool res;
+
+                       if ((res = readFile(e)) == success)
+                               str = _("Document was successfully recovered.");
+                       else
+                               str = _("Document was NOT successfully recovered.");
+                       str += "\n\n" + bformat(_("Remove emergency file now?\n(%1$s)"),
+                                               from_utf8(e.absFilename()));
+
+                       if (!Alert::prompt(_("Delete emergency file?"), str, 1, 1,
+                                       _("&Remove"), _("&Keep it"))) {
+                               e.removeFile();
+                               if (res == success)
+                                       Alert::warning(_("Emergency file deleted"),
+                                               _("Do not forget to save your file now!"), true);
+                               }
+                       return res;
+               }
                case 1:
+                       if (!Alert::prompt(_("Delete emergency file?"),
+                                       _("Remove emergency file now?"), 1, 1,
+                                       _("&Remove"), _("&Keep it")))
+                               e.removeFile();
                        break;
                default:
                        return false;
@@ -3065,7 +3436,7 @@ void Buffer::setBuffersForInsets() const
 }
 
 
-void Buffer::updateLabels(UpdateScope scope) const
+void Buffer::updateLabels(UpdateScope scope, bool out) const
 {
        // Use the master text class also for child documents
        Buffer const * const master = masterBuffer();
@@ -3079,11 +3450,11 @@ void Buffer::updateLabels(UpdateScope scope) const
                // If this is a child document start with the master
                if (master != this) {
                        bufToUpdate.insert(this);
-                       master->updateLabels();
+                       master->updateLabels(UpdateMaster, out);
                        // Do this here in case the master has no gui associated with it. Then, 
                        // the TocModel is not updated and TocModel::toc_ is invalid (bug 5699).
                        if (!master->gui_)
-                               structureChanged();     
+                               structureChanged();
 
                        // was buf referenced from the master (i.e. not in bufToUpdate anymore)?
                        if (bufToUpdate.find(this) == bufToUpdate.end())
@@ -3107,7 +3478,7 @@ void Buffer::updateLabels(UpdateScope scope) const
 
        // do the real work
        ParIterator parit = cbuf.par_iterator_begin();
-       updateLabels(parit);
+       updateLabels(parit, out);
 
        if (master != this)
                // TocBackend update will be done later.
@@ -3189,9 +3560,9 @@ static bool needEnumCounterReset(ParIterator const & it)
 
 
 // set the label of a paragraph. This includes the counters.
-static void setLabel(Buffer const & buf, ParIterator & it)
+void Buffer::setLabel(ParIterator & it) const
 {
-       BufferParams const & bp = buf.masterBuffer()->params();
+       BufferParams const & bp = this->masterBuffer()->params();
        DocumentClass const & textclass = bp.documentClass();
        Paragraph & par = it.paragraph();
        Layout const & layout = par.layout();
@@ -3199,7 +3570,7 @@ static void setLabel(Buffer const & buf, ParIterator & it)
 
        if (par.params().startOfAppendix()) {
                // FIXME: only the counter corresponding to toplevel
-               // sectionning should be reset
+               // sectioning should be reset
                counters.reset();
                counters.appendix(true);
        }
@@ -3211,7 +3582,7 @@ static void setLabel(Buffer const & buf, ParIterator & it)
        if (layout.margintype == MARGIN_MANUAL
            || layout.latextype == LATEX_BIB_ENVIRONMENT) {
                if (par.params().labelWidthString().empty())
-                       par.params().labelWidthString(par.translateIfPossible(layout.labelstring(), bp));
+                       par.params().labelWidthString(par.expandLabel(layout, bp));
        } else {
                par.params().labelWidthString(docstring());
        }
@@ -3220,7 +3591,7 @@ static void setLabel(Buffer const & buf, ParIterator & it)
        case LABEL_COUNTER:
                if (layout.toclevel <= bp.secnumdepth
                    && (layout.latextype != LATEX_ENVIRONMENT
-                       || isFirstInSequence(it.pit(), it.plist()))) {
+                       || it.text()->isFirstInSequence(it.pit()))) {
                        counters.step(layout.counter);
                        par.params().labelString(
                                par.expandLabel(layout, bp));
@@ -3277,7 +3648,8 @@ static void setLabel(Buffer const & buf, ParIterator & it)
                        counters.reset(enumcounter);
                counters.step(enumcounter);
 
-               par.params().labelString(counters.theCounter(enumcounter));
+               string const & lang = par.getParLanguage(bp)->code();
+               par.params().labelString(counters.theCounter(enumcounter, lang));
 
                break;
        }
@@ -3286,14 +3658,15 @@ static void setLabel(Buffer const & buf, ParIterator & it)
                string const & type = counters.current_float();
                docstring full_label;
                if (type.empty())
-                       full_label = buf.B_("Senseless!!! ");
+                       full_label = this->B_("Senseless!!! ");
                else {
-                       docstring name = buf.B_(textclass.floats().getType(type).name());
+                       docstring name = this->B_(textclass.floats().getType(type).name());
                        if (counters.hasCounter(from_utf8(type))) {
+                               string const & lang = par.getParLanguage(bp)->code();
                                counters.step(from_utf8(type));
                                full_label = bformat(from_ascii("%1$s %2$s:"), 
                                                     name, 
-                                                    counters.theCounter(from_utf8(type)));
+                                                    counters.theCounter(from_utf8(type), lang));
                        } else
                                full_label = bformat(from_ascii("%1$s #:"), name);      
                }
@@ -3310,14 +3683,13 @@ static void setLabel(Buffer const & buf, ParIterator & it)
        case LABEL_CENTERED_TOP_ENVIRONMENT:
        case LABEL_STATIC:      
        case LABEL_BIBLIO:
-               par.params().labelString(
-                       par.translateIfPossible(layout.labelstring(), bp));
+               par.params().labelString(par.expandLabel(layout, bp));
                break;
        }
 }
 
 
-void Buffer::updateLabels(ParIterator & parit) const
+void Buffer::updateLabels(ParIterator & parit, bool out) const
 {
        LASSERT(parit.pit() == 0, /**/);
 
@@ -3335,59 +3707,16 @@ void Buffer::updateLabels(ParIterator & parit) const
                maxdepth = parit->getMaxDepthAfter();
 
                // set the counter for this paragraph
-               setLabel(*this, parit);
+               setLabel(parit);
 
                // Now the insets
                InsetList::const_iterator iit = parit->insetList().begin();
                InsetList::const_iterator end = parit->insetList().end();
                for (; iit != end; ++iit) {
                        parit.pos() = iit->pos;
-                       iit->inset->updateLabels(parit);
-               }
-       }
-}
-
-
-bool Buffer::nextWord(DocIterator & from, DocIterator & to,
-       docstring & word) const
-{
-       bool inword = false;
-       bool ignoreword = false;
-       string lang_code;
-       // Go backward a bit if needed in order to return the word currently
-       // pointed by 'from'.
-       while (from && from.pos() && isLetter(from))
-               from.backwardPos();
-       // OK, we start from here.
-       to = from;
-       while (to.depth()) {
-               if (isLetter(to)) {
-                       if (!inword) {
-                               inword = true;
-                               ignoreword = false;
-                               from = to;
-                               word.clear();
-                               lang_code = to.paragraph().getFontSettings(params(),
-                                       to.pos()).language()->code();
-                       }
-                       // Insets like optional hyphens and ligature
-                       // break are part of a word.
-                       if (!to.paragraph().isInset(to.pos())) {
-                               char_type const c = to.paragraph().getChar(to.pos());
-                               word += c;
-                               if (isDigit(c))
-                                       ignoreword = true;
-                       }
-               } else { // !isLetter(cur)
-                       if (inword && !word.empty() && !ignoreword)
-                               return true;
-                       inword = false;
+                       iit->inset->updateLabels(parit, out);
                }
-               to.forwardPos();
        }
-       from = to;
-       word.clear();
-       return false;
 }
 
 
@@ -3395,30 +3724,34 @@ int Buffer::spellCheck(DocIterator & from, DocIterator & to,
        WordLangTuple & word_lang, docstring_list & suggestions) const
 {
        int progress = 0;
-       SpellChecker::Result res = SpellChecker::OK;
-       SpellChecker * speller = theSpellChecker();
+       WordLangTuple wl;
        suggestions.clear();
-       docstring word;
-       while (nextWord(from, to, word)) {
-               ++progress;
-               string lang_code = lyxrc.spellchecker_use_alt_lang
-                     ? lyxrc.spellchecker_alt_lang
-                     : from.paragraph().getFontSettings(params(), from.pos()).language()->code();
-               WordLangTuple wl(word, lang_code);
-               res = speller->check(wl);
-               // ... just bail out if the spellchecker reports an error.
-               if (!speller->error().empty()) {
-                       throw ExceptionMessage(WarningException,
-                               _("The spellchecker has failed."), speller->error());
+       word_lang = WordLangTuple();
+       // OK, we start from here.
+       DocIterator const end = doc_iterator_end(this);
+       for (; from != end; from.forwardPos()) {
+               // We are only interested in text so remove the math CursorSlice.
+               while (from.inMathed()) {
+                       from.pop_back();
+                       from.pos()++;
                }
-               if (res != SpellChecker::OK && res != SpellChecker::IGNORED_WORD) {
+               // If from is at the end of the document (which is possible
+               // when leaving the mathed) LyX will crash later.
+               if (from == end)
+                       break;
+               to = from;
+               if (from.paragraph().spellCheck(from.pos(), to.pos(), wl, suggestions)) {
                        word_lang = wl;
                        break;
                }
-               from = to;
+
+               // Do not increase progress when from == to, otherwise the word
+               // count will be wrong.
+               if (from != to) {
+                       from = to;
+                       ++progress;
+               }
        }
-       while (!(word = speller->nextMiss()).empty())
-               suggestions.push_back(word);
        return progress;
 }