[beast: 2/47] BSE: add Server.send_user_message() which triggers a user_message signal emissioon

[Tim Janik <timj src gnome org>]

commit edf9616e0e4bde3f4a209a7822071a193c1d40a9
Author: Tim Janik <timj gnu org>
Date:   Sun Jun 4 22:31:12 2017 +0200

    BSE: add Server.send_user_message() which triggers a user_message signal emissioon
    
    Signed-off-by: Tim Janik <timj gnu org>

 bse/bseapi.idl   |    3 ++-
 bse/bseserver.cc |    4 ++--
 bse/bseserver.hh |    2 +-
 3 files changed, 5 insertions(+), 4 deletions(-)
---
diff --git a/bse/bseapi.idl b/bse/bseapi.idl
index 8573614..d987d29 100644
--- a/bse/bseapi.idl
+++ b/bse/bseapi.idl
@@ -959,7 +959,8 @@ sequence CategorySeq {
  * used in the BSE context.
  */
 interface Server : Object {
-  signal void   user_message    (UserMessage umsg);     ///< Notification signal for user messages from BSE.
+  signal void   user_message      (UserMessage umsg);   ///< Notification signal for user messages from BSE.
+  void          send_user_message (UserMessage umsg);   ///< Send a user messages from BSE.
   TestObject    get_test_object ();                     ///< Retrieve object for API, signal, etc tests.
   Object        from_proxy      (int64 proxyid);        ///< Find an Object from its associated BseObject 
proxy id.
   String        get_mp3_version ();                     ///< Retrieve BSE MP3 handler version.
diff --git a/bse/bseserver.cc b/bse/bseserver.cc
index c2e7775..c9870a5 100644
--- a/bse/bseserver.cc
+++ b/bse/bseserver.cc
@@ -1138,8 +1138,8 @@ ServerImpl::instance()
 void
 ServerImpl::send_user_message (const UserMessage &umsg)
 {
-  assert_return (umsg.text1.empty() == false);
-  sig_user_message.emit (umsg);
+  if (!umsg.text1.empty())
+    sig_user_message.emit (umsg);
 }
 
 String
diff --git a/bse/bseserver.hh b/bse/bseserver.hh
index 92b831a..adb9dcc 100644
--- a/bse/bseserver.hh
+++ b/bse/bseserver.hh
@@ -138,7 +138,7 @@ public:
   virtual CategorySeq     category_match_typed    (const String &pattern, const String &type_name) override;
   virtual CategorySeq     category_match          (const String &pattern) override;
   virtual int64           tick_stamp_from_systime (int64 systime_usecs) override;
-  void               send_user_message      (const UserMessage &umsg);
+  virtual void            send_user_message       (const UserMessage &umsg) override;
   static void        register_source_module (const String &type, const String &title, const String &tags, 
const uint8 *pixstream);
   static ServerImpl& instance               ();
 };