#include "warn.hh"
#include "translator-group.hh"
#include "context-def.hh"
+#include "dispatcher.hh"
#include "global-context.hh"
#include "translator.icc"
return daddy_context_->implementation ();
}
+void
+Translator::protect_event (SCM ev)
+{
+ get_daddy_translator ()->protect_event (ev);
+}
+
SCM
Translator::internal_get_property (SCM sym) const
{
{
}
+void
+Translator::connect_to_context (Context *c)
+{
+ for (translator_listener_record *r = get_listener_list (); r; r=r->next_)
+ c->events_below ()->add_listener (r->get_listener_ (this), r->event_class_);
+}
+
+void
+Translator::disconnect_from_context (Context *c)
+{
+ for (translator_listener_record *r = get_listener_list (); r; r=r->next_)
+ c->events_below ()->remove_listener (r->get_listener_ (this), r->event_class_);
+}
+
+/*
+ Internally called once, statically, for each translator
+ listener. Connects the name of an event class with a procedure that
+ fetches the corresponding listener.
+
+ The method should only be called from the macro
+ IMPLEMENT_TRANSLATOR_LISTENER.
+ */
+void
+Translator::add_translator_listener (translator_listener_record **listener_list,
+ translator_listener_record *r,
+ Listener (*get_listener) (void *),
+ const char *ev_class)
+{
+ /* ev_class is the C++ identifier name. Convert to scm symbol */
+ string name = string (ev_class);
+ name = replace_all (name, '_', '-');
+ name = name + "-event";
+ /* It's OK to use scm_gc_protect_object for protection, because r is
+ statically allocated. */
+ r->event_class_ = scm_gc_protect_object (scm_str2symbol (name.c_str ()));
+ r->get_listener_ = get_listener;
+ r->next_ = *listener_list;
+ *listener_list = r;
+}
+
/*
SMOBS
*/
return 0;
}
+Moment
+get_event_length (Stream_event *e)
+{
+ Moment *m = unsmob_moment (e->get_property ("length"));
+ if (m)
+ return *m;
+ else
+ return Moment (0);
+}
+
ADD_TRANSLATOR (Translator,
"Base class. Unused",
"",