[beast: 6/9] BSE: add Object::changed() signal

[Tim Janik <timj src gnome org>]

commit 039d88d08af8d071f0a01c476b9e6dae1841c264
Author: Tim Janik <timj gnu org>
Date:   Fri Nov 20 01:02:19 2015 +0100

    BSE: add Object::changed() signal
    
    Signed-off-by: Tim Janik <timj gnu org>

 bse/bseapi.idl   |    5 +++--
 bse/bseobject.cc |    6 ++++++
 bse/bseobject.hh |    1 +
 3 files changed, 10 insertions(+), 2 deletions(-)
---
diff --git a/bse/bseapi.idl b/bse/bseapi.idl
index a8682be..1f3f907 100644
--- a/bse/bseapi.idl
+++ b/bse/bseapi.idl
@@ -460,8 +460,9 @@ sequence TrackPartSeq;
 
 /// Fundamental base type for all BSE objects.
 interface Object {
-  String debug_name (); ///< Object name useful for debugging output.
-  int64  proxy_id   (); ///< Retrieve the BseObject proxy ID for an Object.
+  String      debug_name (); ///< Object name useful for debugging output.
+  int64       proxy_id   (); ///< Retrieve the BseObject proxy ID for an Object.
+  signal void changed    (String what); ///< Notification for object state or property changes.
 };
 
 /// Base interface type for objects that can be added to a container.
diff --git a/bse/bseobject.cc b/bse/bseobject.cc
index a61b894..158c451 100644
--- a/bse/bseobject.cc
+++ b/bse/bseobject.cc
@@ -42,6 +42,12 @@ ObjectImpl::proxy_id ()
   return bo->unique_id;
 }
 
+void
+ObjectImpl::changed (const String &what)
+{
+  sig_changed.emit (what);
+}
+
 } // Bse
 
 enum
diff --git a/bse/bseobject.hh b/bse/bseobject.hh
index 600f2fb..5efa248 100644
--- a/bse/bseobject.hh
+++ b/bse/bseobject.hh
@@ -13,6 +13,7 @@ public:
   virtual               ~ObjectImpl ();
   virtual std::string    debug_name () override;
   virtual int64_t        proxy_id   () override;
+  void                   changed    (const String &what);
   operator               BseObject* ()          { return gobject_; }
   // template<class BseObjectPtr> BseObjectPtr as (); // provided by ObjectIface
   virtual BseObject*  as_bse_object () override { return gobject_; }