/*
- dispatcher.hh -- declare Dispatcher
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2005 Erik Sandberg <mandolaerik@gmail.com>
- (c) 2005 Erik Sandberg <mandolaerik@gmail.com>
+ LilyPond is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef DISPATCHER_HH
#include "listener.hh"
#include "stream-event.hh"
+#include "smobs.hh"
-class Dispatcher
+class Dispatcher : public Smob<Dispatcher>
{
+public:
+ int print_smob (SCM, scm_print_state *) const;
+ SCM mark_smob () const;
+ static const char type_p_name_[];
+ virtual ~Dispatcher ();
+private:
/* Hash table. Each event-class maps to a list of listeners. */
SCM listeners_;
/* alist of dispatchers that we listen to. Each entry is a
(dist . priority) pair. */
SCM dispatchers_;
SCM listen_classes_;
- DECLARE_LISTENER (dispatch);
+ void dispatch (SCM);
/* priority counter. Listeners with low priority receive events
first. */
int priority_count_;
- void internal_add_listener (Listener, SCM event_class, int priority);
+ void internal_add_listener (SCM callback, SCM event_class, int priority);
public:
Dispatcher ();
void broadcast (Stream_event *ev);
+ bool is_listened_class (SCM);
+ SCM listened_types ();
void add_listener (Listener, SCM event_class);
+ void add_listener (SCM callback, SCM event_class);
void remove_listener (Listener, SCM event_class);
void register_as_listener (Dispatcher *dist);
void unregister_as_listener (Dispatcher *dist);
-protected:
- DECLARE_SMOBS (Dispatcher);
};
-DECLARE_UNSMOB (Dispatcher, dispatcher);
#endif // DISPATCHER_HH