FailureListener, from Charlie Groves.

A nice alternate to ComplainingListener. ComplainingListener has the
wee downside of needing to compose your error text prior to making
a request, even though the common case is to throw away the error string.

This class has the downside of requiring a new anonymous class to be
generated by the compiler every time you use it.


git-svn-id: https://samskivert.googlecode.com/svn/trunk@2103 6335cc39-0255-0410-8fd6-9bcaacd3b74c

src/java/com/samskivert/util/FailureListener.java

@@ -0,0 +1,15 @@
+package com.samskivert.util;
+
+/**
+ * The pessimist's dream.  This ResultListener silently eats requestCompleted but makes subclasses
+ * handle requestFailed.
+ */
+public abstract class FailureListener
+    implements ResultListener
+{
+    // documentation inherited from interface ResultListener
+    public void requestCompleted (Object result)
+    {
+        // Yeah, yeah, yeah. You did something. Good for you.
+    }
+}