typed BonoboStreams

[Dan Winship <danw helixcode com>]

So, if these idl changes look good, I'll start on the code.

(I got rid of the typedefs in bonobo-persist, because the "type" is
the type of the data, not the stream, so having "stream" in the name
seemed wrong.)

Index: bonobo-persist.idl
===================================================================
RCS file: /cvs/gnome/bonobo/idl/bonobo-persist.idl,v
retrieving revision 1.14
diff -u -r1.14 bonobo-persist.idl
--- bonobo-persist.idl	2000/05/05 13:37:16	1.14
+++ bonobo-persist.idl	2000/05/18 18:42:16
@@ -17,26 +17,16 @@
 		exception WrongDataType {};
 		exception FileNotFound {};
 
-		typedef string               StreamType;
-		typedef sequence<StreamType> StreamTypeList;
-		
 		/**
 		 * get_types:
 		 *
-		 *  Gets a list of supported mime types that this
-		 * persistor can cope with. The default / preferred
-		 * type being the first element.
+		 * Returns a list of MIME types that the current data
+		 * can be saved in. The first returned type is the
+		 * preferred/default type that will be used unless it
+		 * is persisted to a differently-typed stream.
 		 */
-/*		StreamTypeList get_types ();*/
+		sequence<string> get_types ();
 
-		/**
-		 * type:
-		 *
-		 *  Determines the content type of the stream about to
-		 * be passed.
-		 */
-/*		void       set_type (in StreamType type);
-		StreamType get_type ();*/
 	};
 	
 	/*
@@ -159,9 +149,11 @@
 		 * save:
 		 * @stream: Where to save the state to.
 		 *
-		 * Saves the state of the object to the @stream
+		 * Saves the state of the object to the @stream. If
+		 * @stream is typed, and the data cannot be exported
+		 * to that type, WrongDataType will be raised.
 		 */
-		void save (in Bonobo::Stream stream);
+		void save (in Bonobo::Stream stream) raises (WrongDataType);
 
 		/**
 		 * get_size_max:
Index: bonobo-storage.idl
===================================================================
RCS file: /cvs/gnome/bonobo/idl/bonobo-storage.idl,v
retrieving revision 1.14
diff -u -r1.14 bonobo-storage.idl
--- bonobo-storage.idl	2000/05/02 20:48:56	1.14
+++ bonobo-storage.idl	2000/05/18 18:42:16
@@ -110,6 +110,21 @@
 			raises (NotSupported);
 
 		/**
+		 * set_type:
+		 *
+		 * Sets the MIME type of the stream.
+		 */
+		void set_type (in String type);
+
+		/**
+		 * get_type:
+		 *
+		 * Returns the MIME type of the stream, or "*" if
+		 * it is unknown.
+		 */
+		String get_type ();
+
+		/**
 		 * lock_region:
 		 * 
 		 */