--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tango/tango/util/log/model/IHierarchy.d	Fri Jan 11 17:57:40 2008 +0100
@@ -0,0 +1,77 @@
+/*******************************************************************************
+
+        copyright:      Copyright (c) 2004 Kris Bell. All rights reserved
+
+        license:        BSD style: $(LICENSE)
+      
+        version:        Initial release: May 2004
+        
+        author:         Kris
+
+*******************************************************************************/
+
+module tango.util.log.model.IHierarchy;
+
+public import tango.util.log.model.ILevel;
+
+/*******************************************************************************
+
+        The Logger hierarchy Interface. We use this to break the
+        interdependency between a couple of modules        
+
+*******************************************************************************/
+
+interface IHierarchy
+{
+        /**********************************************************************
+
+                Return the name of this Hierarchy
+
+        **********************************************************************/
+
+        char[] getName ();
+
+        /**********************************************************************
+
+                Return the address of this Hierarchy. This is typically
+                attached when sending events to remote monitors.
+
+        **********************************************************************/
+
+        char[] getAddress ();
+
+        /***********************************************************************
+                
+                Configure a context
+
+        ***********************************************************************/
+
+        void context (Context context);
+
+        /***********************************************************************
+                
+                Return the configured context
+
+        ***********************************************************************/
+
+        Context context ();
+
+        /***********************************************************************
+                
+                Context for a hierarchy, used for customizing behaviour
+                of log hierarchies. You can use this to implement dynamic
+                log-levels, based upon filtering or some other mechanism
+
+        ***********************************************************************/
+
+        interface Context
+        {
+                /// return a label for this context
+                char[] label ();
+                
+                /// first arg is the setting of the logger itself, and
+                /// the second arg is what kind of message we're being
+                /// asked to produce
+                bool isEnabled (ILevel.Level setting, ILevel.Level target);
+        }
+}