- /// parse command line and do basic initialisation
- void parse_init(int & argc, char * argv[]);
-
- /**
- * set up GUI parameters. At this point lyxrc may
- * be used.
- */
- void parse_lyxrc();
-
- /**
- * Start the main event loop, after executing the given
- * batch commands, and loading the given documents
- */
- void start(string const & batch, std::vector<std::string> files);
-
- /**
- * quit running LyX
- */
- void exit();
-
- /** Eg, passing LColor::black returns "000000",
- * passing LColor::white returns "ffffff".
- */
- string const hexname(LColor::color col);
-
- /**
- * update an altered GUI color
- */
- void update_color(LColor::color col);
-
- /**
- * update the font cache
- */
- void update_fonts();
-
- /**
- * is the given font available ?
- */
- bool font_available(LyXFont const & font);
-
- /**
- * add a callback for I/O read notification
- */
- void set_read_callback(int fd, LyXComm * comm);
-
- /**
- * remove a I/O read callback
- */
- void remove_read_callback(int fd);
-}
+/// are we using the GUI at all
+extern bool use_gui;
+
+/// return a suitable serif font name (called from non-gui context too !)
+std::string const roman_font_name();
+
+/// return a suitable sans serif font name (called from non-gui context too !)
+std::string const sans_font_name();
+
+/// return a suitable monospaced font name (called from non-gui context too !)
+std::string const typewriter_font_name();
+
+/// parse command line and do basic initialisation
+void parse_init(int & argc, char * argv[]);
+
+/**
+ * set up GUI parameters. At this point lyxrc may
+ * be used.
+ */
+void parse_lyxrc();
+
+/**
+ * Start the main event loop, after executing the given
+ * batch commands, and loading the given documents
+ */
+void start(std::string const & batch, std::vector<std::string> const & files);
+
+/**
+ * Synchronise all pending events.
+ */
+void sync_events();
+
+/**
+ * quit running LyX
+ */
+void exit();
+
+/**
+ * return the status flag for a given action. This can be used to tell
+ * that a given lfun is not implemented by a frontend
+ */
+FuncStatus getStatus(FuncRequest const & ev);
+
+/** Eg, passing LColor::black returns "000000",
+ * passing LColor::white returns "ffffff".
+ */
+std::string const hexname(LColor_color col);
+
+/**
+ * update an altered GUI color
+ */
+void update_color(LColor_color col);
+
+/**
+ * update the font cache
+ */
+void update_fonts();
+
+/**
+ * is the given font available ?
+ */
+bool font_available(LyXFont const & font);
+
+/**
+ * add a callback for socket read notification
+ * @param fd socket descriptor (file/socket/etc)
+ */
+void register_socket_callback(int fd, boost::function<void()> func);
+
+/**
+ * remove a I/O read callback
+ * @param fd socket descriptor (file/socket/etc)
+ */
+void unregister_socket_callback(int fd);
+
+} // namespace lyx_gui