X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Finclude%2Fcontext.hh;h=2cb0280ea128cb59076f7ce1d07463358fd007c2;hb=87eedcd59f4082cb0841528ad5bc82cb1d1191e3;hp=faf6491eb88d4cc30e546118e5891b32c71fabe2;hpb=cfbe7661413b152a10293f3da7fb412e325254f9;p=lilypond.git

diff --git a/lily/include/context.hh b/lily/include/context.hh
index faf6491eb8..2cb0280ea1 100644
--- a/lily/include/context.hh
+++ b/lily/include/context.hh
@@ -3,80 +3,106 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c) 2004--2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
+  (c) 2004--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
 */
 
 #ifndef CONTEXT_HH
 #define CONTEXT_HH
 
-#include <map>
-using namespace std;
-
+#include "listener.hh"
 #include "moment.hh"
-#include "lily-proto.hh"
+#include "std-vector.hh"
 #include "virtual-methods.hh"
+#include "scm-hash.hh"
+#include "lily-proto.hh"
 
 class Context
 {
   Scheme_hash_table *properties_dict () const;
   Context (Context const &src);
 
-  DECLARE_SMOBS (Context, dummy);
+  DECLARE_SMOBS (Context);
   DECLARE_CLASSNAME(Context);
   void terminate ();
 
 private:
   friend class Context_handle;
   int iterator_count_;
-  bool init_;
-
-  map<String, int> grob_counts_;
-  map<String, int> context_counts_;
+  
+  /* Used internally by create_context */
+  Stream_event *infant_event_;
 
 protected:
-  Object_key const *key_;
   Context *daddy_context_;
+  /* The used Context_def */
   SCM definition_;
-
+  /* Additions to the Context_def, given by \with */
+  SCM definition_mods_;
+  
   SCM properties_scm_;
   SCM context_list_;
   SCM accepts_list_;
   SCM aliases_;
   Translator_group *implementation_;
-  String id_string_;
-
+  string id_string_;
+  
+  /* Events reported in the context is sent to this dispatcher. */
+  Dispatcher *event_source_;
+
+  /* Events reported to this context or recursively in any of its
+     children, are sent to this dispatcher. */
+  Dispatcher *events_below_;
+
+  // Translator_group is allowed to set implementation_.
+  friend class Translator_group;
+  // Context_def::instantiate initialises some protected members.
   friend class Context_def;
-  void clear_key_disambiguations ();
+  // UGH! initialises implementation_
+  friend SCM ly_make_global_translator (SCM);
 
+  DECLARE_LISTENER (set_property_from_event);
+  DECLARE_LISTENER (unset_property_from_event);
+  
 public:
-  Object_key const *get_key () const;
-  Object_key const *get_grob_key (String);
-  Object_key const *get_context_key (String, String);
-
-  Context *create_context (Context_def *, String, SCM);
-  String id_string () const { return id_string_; }
+  string id_string () const { return id_string_; }
   SCM children_contexts () const { return context_list_; }
   SCM default_child_context_name () const;
 
+  Dispatcher *event_source () const { return event_source_; }
+  Dispatcher *events_below () const { return events_below_; }
+  void internal_send_stream_event (SCM type, Input *origin, SCM props[]);
+
+  SCM get_definition () const { return definition_; }
+  SCM get_definition_mods () const { return definition_mods_; }
+
   Translator_group *implementation () const { return implementation_; }
   Context *get_parent_context () const;
-  Context (Object_key const *);
+  Context ();
 
   /* properties:  */
-  void execute_pushpop_property (SCM prop, SCM sym, SCM val);
   SCM internal_get_property (SCM name_sym) const;
   SCM properties_as_alist () const;
-  void internal_set_property (SCM var_sym, SCM value);
   Context *where_defined (SCM name_sym, SCM *value) const;
   void unset_property (SCM var_sym);
 
-  Context *remove_context (Context *trans);
+#ifndef NDEBUG
+  void internal_set_property (SCM var_sym, SCM value, char const *file, int line, char const *fun);
+#else
+  void internal_set_property (SCM var_sym, SCM value);
+#endif
+
+  Context *create_context (Context_def *, string, SCM);
+  DECLARE_LISTENER (create_context_from_event);
+  DECLARE_LISTENER (acknowledge_infant);
+  DECLARE_LISTENER (remove_context);
+  DECLARE_LISTENER (change_parent);
+  void disconnect_from_parent ();
   void check_removal ();
-  String context_name () const;
+  string context_name () const;
   SCM context_name_symbol () const;
   Global_context *get_global_context () const;
 
-  virtual Score_context *get_score_context () const;
+  virtual Context *get_score_context () const;
   virtual Output_def *get_output_def () const;
   virtual Moment now_mom () const;
   virtual Context *get_default_interpreter ();
@@ -86,13 +112,12 @@ public:
   void add_context (Context *trans);
   bool is_bottom_context () const;
   bool is_removable () const;
-  bool try_music (Music *);
 
   Context *find_create_context (SCM context_name,
-				String id, SCM ops);
-  Context *create_unique_context (SCM context_name,
+				string id, SCM ops);
+  Context *create_unique_context (SCM context_name, string context_id,
 				  SCM ops);
-  Link_array<Context> path_to_acceptable_context (SCM alias,
+  vector<Context*> path_to_acceptable_context (SCM alias,
 						  Output_def *) const;
 };
 
@@ -102,9 +127,11 @@ public:
 
 void apply_property_operations (Context *tg, SCM pre_init_ops);
 void execute_pushpop_property (Context *trg, SCM prop, SCM eltprop, SCM val);
+void execute_general_pushpop_property (Context *context,
+				       SCM context_property, SCM grob_property_path, SCM val);
 SCM updated_grob_properties (Context *tg, SCM sym);
 Context *find_context_below (Context *where,
-			     SCM type_sym, String id);
+			     SCM type_sym, string id);
 bool melisma_busy (Context *);
 
 Context *get_voice_to_lyrics (Context *lyrics);
@@ -114,6 +141,14 @@ DECLARE_UNSMOB (Context, context);
 
 Moment measure_position (Context const *context);
 Rational measure_length (Context const *context);
+void set_context_property_on_children (Context *trans, SCM sym, SCM val);
+
+/* Shorthand for creating and broadcasting stream events. */
+#define send_stream_event(ctx, type, origin, ...)				\
+{									\
+  SCM props[] = { __VA_ARGS__, 0 };					\
+  ctx->internal_send_stream_event (ly_symbol2scm (type), origin, props);	\
+}
 
 #endif /* CONTEXT_HH */