allow to open documents when the textclass is unavailable (backport from 1.4.0cvs)

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/branches/BRANCH_1_3_X@8081 a592a061-630c-0410-9148-cb99ea01b6c8

lib/ChangeLog

@@ -1,3 +1,11 @@
+2003-11-12  Jean-Marc Lasgouttes  <lasgouttes@lyx.org>
+
+	* configure.m4: when latex configuration detection is disabled,
+	fix the default textclass.lst to the new format. Also simplify it
+	to contain only "article".
+
+	* layouts/cv.layout: change description to lowercase
+
 2003-11-05  Jean-Marc Lasgouttes  <lasgouttes@lyx.org>
 
 	* Makefile.am (install-xfonts): fix error when PSres.upr does not

lib/chkconfig.ltx

@@ -59,9 +59,9 @@
 %   the variable chk_<name>.  
 %%%
 \newcommand{\prefix}{+} % the character used by grep to filter 'good' output
-\newcommand{\AddLayout}[3][\default]{
+\newcommand{\AddLayout}[4][\default]{
   \def\default{#2}
-  \immediate\write\layouts{"#2"   "#1"   "#3"}}
+  \immediate\write\layouts{"#2"   "#1"   "#3"   "#4"}}
 \newcommand{\AddVariable}[2]{
   \immediate\write\sed{s!@chk_#1@!#2!g}
   \immediate\write\vars{chk_#1='#2'}}
@@ -107,15 +107,17 @@
 }
 \newcommand{\DeclareLaTeXClass}[2][\default]{
   \TestItem[#1]{\layoutname}{document class}{cls}
-           {\AddLayout[\firstelement]{\layoutname}{#2}}{}
+           {\AddLayout[\firstelement]{\layoutname}{#2}{true}}
+           {\AddLayout[\firstelement]{\layoutname}{#2}{false}}
   \expandafter\endinput
 }
 \newcommand{\DeclareLinuxDocClass}[2][\default]{
   \message{^^J\prefix checking for linuxdoc class \layoutname... }
   \@ifundefined{haslinuxdoc}
-    {\message{no^^J}}
+    {\message{no^^J}  
+     \AddLayout[#1]{\layoutname}{#2}{false}}
     {\message{yes^^J}
-     \AddLayout[#1]{\layoutname}{#2}}
+     \AddLayout[#1]{\layoutname}{#2}{true}}
   \expandafter\endinput
 }
 % Only for compatibility. Will be removed later.
@@ -124,9 +126,10 @@
 \newcommand{\DeclareDocBookClass}[2][\default]{
   \message{^^J\prefix checking for docbook\space\space class \layoutname... }
   \@ifundefined{hasdocbook}
-    {\message{no^^J}}
+    {\message{no^^J}
+     \AddLayout[#1]{\layoutname}{#2}{false}}
     {\message{yes^^J}
-     \AddLayout[#1]{\layoutname}{#2}}
+     \AddLayout[#1]{\layoutname}{#2}{true}}
   \expandafter\endinput
 }
 

lib/configure.m4

@@ -408,11 +408,7 @@ PROVIDE_DEFAULT_FILE(textclass.lst,dnl
 # It contains only default values, since chkconfig.ltx could not be run
 # for some reason. Run ./configure if you need to update it after a
 # configuration change.
-article	article	article
-report	report	report
-book	book	book
-linuxdoc	linuxdoc	linuxdoc
-letter	letter	letter])
+article	article	article false])
 
 PROVIDE_DEFAULT_FILE(chkconfig.sed,[s/@.*@/???/g])
 

lib/layouts/cv.layout

@@ -1,5 +1,5 @@
 #% Do not delete the line below; configure depends on this
-#  \DeclareLaTeXClass{Curriculum Vitae}
+#  \DeclareLaTeXClass{curriculum vitae}
 # CV textclass definition file. 
 # Author : Jean-Marc Lasgouttes (Jean-Marc.Lasgouttes@inria.fr)
 

src/buffer.C

@@ -650,6 +650,19 @@ Buffer::parseSingleLyXformat2Token(LyXLex & lex, Paragraph *& par,
 #endif
 			params.textclass = 0;
 		}
+		if (!params.getLyXTextClass().isTeXClassAvailable()) {
+#if USE_BOOST_FORMAT
+			Alert::alert(_("Textclass error"),
+				boost::io::str(boost::format(_("The document uses a missing TeX class \"%1$s\".")) % lex.getString()),
+				_("LyX will not be able to produce output."));
+#else
+			Alert::alert(
+				_("Textclass error"),
+				_("The document uses a missing TeX class ")
+				+ lex.getString(),
+				_("LyX will not be able to produce output."));
+#endif
+		}
 	} else if (token == "\\options") {
 		lex.eatLine();
 		params.options = lex.getString();

src/exporter.C

@@ -169,7 +169,8 @@ string const Exporter::BufferFormat(Buffer const * buffer)
 vector<string> const Exporter::Backends(Buffer const * buffer)
 {
 	vector<string> v;
-	v.push_back(BufferFormat(buffer));
+	if (buffer->params.getLyXTextClass().isTeXClassAvailable())
+		v.push_back(BufferFormat(buffer));
 	v.push_back("text");
 	return v;
 }

src/frontends/qt2/QDocument.C

@@ -115,7 +115,12 @@ void QDocument::build_dialog()
 	// layout
 	for (LyXTextClassList::const_iterator cit = textclasslist.begin();
 	     cit != textclasslist.end(); ++cit) {
-		dialog_->layoutModule->classCO->insertItem(toqstr(cit->description()));
+		if (cit->isTeXClassAvailable()) {
+			dialog_->layoutModule->classCO->insertItem(toqstr(cit->description()));
+                } else {
+			dialog_->layoutModule->classCO->insertItem(toqstr("Unavailable: " +
+									  cit->description()));
+		}
 	}
 
 	for (int n = 0; tex_fonts[n][0]; ++n) {
@@ -467,13 +472,7 @@ void QDocument::update_contents()
 
 
 	// layout
-	for (int n = 0; n<dialog_->layoutModule->classCO->count(); ++n) {
-		if (dialog_->layoutModule->classCO->text(n) ==
-		    toqstr(controller().textClass().description())) {
-			dialog_->layoutModule->classCO->setCurrentItem(n);
-			break;
-		}
-	}
+	dialog_->layoutModule->classCO->setCurrentItem(params.textclass);
 
 	dialog_->updateFontsize(controller().textClass().opt_fontsize(),
 				params.fontsize);

src/frontends/xforms/FormDocument.C

@@ -145,7 +145,11 @@ void FormDocument::build()
 	fl_end_form();
 	for (LyXTextClassList::const_iterator cit = textclasslist.begin();
 	     cit != textclasslist.end(); ++cit) {
-		combo_doc_class->addto(cit->description());
+		if (cit->isTeXClassAvailable()) {
+			combo_doc_class->addto(cit->description());
+		} else {
+			combo_doc_class->addto("Unavailable: " + cit->description());
+		}
 	}
 
 	fl_addto_choice(class_->choice_doc_spacing,
@@ -852,7 +856,7 @@ void FormDocument::UpdateClassParams(BufferParams const & params)
 
 	LyXTextClass const & tclass = textclasslist[params.textclass];
 
-	combo_doc_class->select(tclass.description());
+	combo_doc_class->select(params.textclass + 1);
 	fl_clear_choice(class_->choice_doc_fontsize);
 	fl_addto_choice(class_->choice_doc_fontsize, "default");
 	fl_addto_choice(class_->choice_doc_fontsize,

src/lyxtextclass.C

@@ -49,9 +49,9 @@ struct compare_name {
 
 
 LyXTextClass::LyXTextClass(string const & fn, string const & cln,
-			   string const & desc)
+			   string const & desc, bool texClassAvail )
 	: name_(fn), latexname_(cln), description_(desc),
-	  floatlist_(new FloatList), ctrs_(new Counters)
+	  floatlist_(new FloatList), ctrs_(new Counters), texClassAvail_(texClassAvail)
 {
 	outputType_ = LATEX;
 	columns_ = 1;
@@ -70,6 +70,11 @@ LyXTextClass::LyXTextClass(string const & fn, string const & cln,
 }
 
 
+bool LyXTextClass::isTeXClassAvailable() const {
+	return texClassAvail_;
+}
+
+
 bool LyXTextClass::do_readStyle(LyXLex & lexrc, LyXLayout & lay)
 {
 	lyxerr[Debug::TCLASS] << "Reading style " << lay.name() << endl;

src/lyxtextclass.h

@@ -39,7 +39,11 @@ public:
 	explicit
 	LyXTextClass(string const & = string(),
 		     string const & = string(),
-		     string const & = string());
+		     string const & = string(),
+		     bool = false);
+
+	/// check whether the TeX class is available
+	bool isTeXClassAvailable() const;
 
 	/// paragraph styles begin iterator.
 	const_iterator begin() const { return layoutlist_.begin(); }
@@ -150,6 +154,8 @@ public:
 	///
 	int size() const;
 private:
+	/// Is the TeX class available?
+	bool texClassAvail_;
 	///
 	bool delete_layout(string const &);
 	///

src/lyxtextclasslist.C

@@ -69,7 +69,9 @@ LyXTextClassList::operator[](textclass_type textclass) const
 class less_textclass_desc {
 public:
 	int operator()(LyXTextClass const & tc1, LyXTextClass const & tc2) {
-		return tc1.description() < tc2.description();
+		return (tc1.isTeXClassAvailable() && !tc2.isTeXClassAvailable()) ||
+		       (tc1.isTeXClassAvailable() == tc2.isTeXClassAvailable() &&
+		        tc1.description() < tc2.description());
 	}
 };
 
@@ -130,13 +132,17 @@ bool LyXTextClassList::Read ()
 				if (lex.next()) {
 					string const desc = lex.getString();
 					lyxerr[Debug::TCLASS] << "Desc: " << desc << endl;
-					// This code is run when we have
-					// fname, clname and desc
-					LyXTextClass tmpl(fname, clname, desc);
-					if (lyxerr.debugging(Debug::TCLASS)) {
-						tmpl.load();
+					if (lex.next()) {
+						bool avail = lex.getBool();
+						lyxerr[Debug::TCLASS] << "Avail: " << avail << endl;
+						// This code is run when we have
+						// fname, clname, desc, and avail
+						LyXTextClass tmpl(fname, clname, desc, avail);
+						if (lyxerr.debugging(Debug::TCLASS)) {
+							tmpl.load();
+						}
+						classlist_.push_back(tmpl);
 					}
-					classlist_.push_back(tmpl);
 				}
 			}
 		}

status.13x

@@ -22,6 +22,13 @@ What's new
 
 ** Updates
 
+- it is now possible to open documents which use a textclasse for
+  which no LaTeX support is installed. The documents can be normally
+  edited, but they can of course not be previewed or printed. Note
+  that the format of the file .lyx/textclasses.lst has changed as a
+  consequence and it is therefore not possible to use LyX 1.3.4 and an
+  earlier version with the same .lyx/ directory.
+
 - add support for \boldsymbol in math editor
 
 - update danish, italian, romanian and slovenian interface localizations