/*
- dispatcher.cc -- implement Scheme bindings for Dispatcher
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
+ Copyright (C) 2006--2012 Erik Sandberg <mandolaerik@gmail.com>
- (c) 2006--2009 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/>.
*/
#include "dispatcher.hh"
LY_DEFINE (ly_make_dispatcher, "ly:make-dispatcher",
- 0, 0, 0, (),
- "Return a newly created dispatcher.")
+ 0, 0, 0, (),
+ "Return a newly created dispatcher.")
{
return (new Dispatcher ())->unprotect ();
}
LY_DEFINE (ly_connect_dispatchers, "ly:connect-dispatchers",
- 2, 0, 0, (SCM to, SCM from),
- "Make the dispatcher @var{to} listen to events from @var{from}.")
+ 2, 0, 0, (SCM to, SCM from),
+ "Make the dispatcher @var{to} listen to events from @var{from}.")
{
Dispatcher *t = unsmob_dispatcher (to);
Dispatcher *f = unsmob_dispatcher (from);
-
- LY_ASSERT_SMOB (Dispatcher, to, 1);
- LY_ASSERT_SMOB (Dispatcher, from, 2);
+
+ LY_ASSERT_SMOB (Dispatcher, to, 1);
+ LY_ASSERT_SMOB (Dispatcher, from, 2);
t->register_as_listener (f);
}
LY_DEFINE (ly_add_listener, "ly:add-listener",
- 2, 0, 1, (SCM list, SCM disp, SCM cl),
- "Add the listener @var{list} to the dispatcher @var{disp}."
- " Whenever @var{disp} hears an event of class @var{cl},"
- " it is forwarded to @var{list}.")
+ 2, 0, 1, (SCM list, SCM disp, SCM cl),
+ "Add the listener @var{list} to the dispatcher @var{disp}."
+ " Whenever @var{disp} hears an event of class @var{cl},"
+ " it is forwarded to @var{list}.")
{
Listener *l = unsmob_listener (list);
Dispatcher *d = unsmob_dispatcher (disp);
- LY_ASSERT_SMOB (Listener, list, 1);
- LY_ASSERT_SMOB (Dispatcher, disp, 2);
-
+ LY_ASSERT_SMOB (Listener, list, 1);
+ LY_ASSERT_SMOB (Dispatcher, disp, 2);
+
for (int arg = SCM_ARG3; scm_is_pair (cl); cl = scm_cdr (cl), arg++)
{
SCM sym = scm_car (cl);
return SCM_UNDEFINED;
}
+LY_DEFINE (ly_listened_event_types, "ly:listened-event-types",
+ 1, 0, 0, (SCM disp),
+ "Return a list of all event types that @var{disp} listens"
+ " to.")
+{
+ LY_ASSERT_SMOB (Dispatcher, disp, 1);
+
+ SCM result = unsmob_dispatcher (disp)->listened_types ();
+
+ scm_remember_upto_here_1 (disp);
+
+ return result;
+}
+
+LY_DEFINE (ly_listened_event_class_p, "ly:listened-event-class?",
+ 2, 0, 0, (SCM disp, SCM cl),
+ "Does @var{disp} listen to any event type in the list"
+ " @var{cl}?")
+{
+ LY_ASSERT_SMOB (Dispatcher, disp, 1);
+ LY_ASSERT_TYPE (scm_is_pair, cl, 2);
+
+ bool result = unsmob_dispatcher (disp)->is_listened_class (cl);
+
+ scm_remember_upto_here_1 (disp);
+
+ return scm_from_bool (result);
+}
+
+
LY_DEFINE (ly_broadcast, "ly:broadcast",
- 2, 0, 0, (SCM disp, SCM ev),
- "Send the stream event @var{ev} to the dispatcher @var{disp}.")
+ 2, 0, 0, (SCM disp, SCM ev),
+ "Send the stream event @var{ev} to the dispatcher @var{disp}.")
{
Dispatcher *d = unsmob_dispatcher (disp);
Stream_event *e = unsmob_stream_event (ev);
-
+
LY_ASSERT_SMOB (Dispatcher, disp, 1);
- LY_ASSERT_SMOB (Stream_event, ev, 2);
+ LY_ASSERT_SMOB (Stream_event, ev, 2);
d->broadcast (e);
return SCM_UNDEFINED;
}