Moved remaining client.*Codes classes into their respective data packages

as they are intended to represent codes shared between the client and the
server.  Made correspondingly necessary changes throughout.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@1240 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/presents/data/InvocationCodes.java

@@ -0,0 +1,31 @@
+//
+// $Id: InvocationCodes.java,v 1.1 2002/04/15 16:28:03 shaper Exp $
+
+package com.threerings.presents.data;
+
+/**
+ * The invocation codes interface provides codes that are commonly used by
+ * invocation service implementations. It is implemented as an interface
+ * so that were an invocation service to desire to build on two or more
+ * other services, it can provide a codes interface that inherits from all
+ * of the services that it extends.
+ */
+public interface InvocationCodes
+{
+    /**
+     * Generally used in responses that can either have the value success,
+     * or a string code explaining the reason for failure.
+     */
+    public static final String SUCCESS = "success";
+
+    /** An error code returned to clients when a service cannot be
+     * performed because of some internal server error that we couldn't
+     * explain in any meaningful way (things like null pointer
+     * exceptions). */
+    public static final String INTERNAL_ERROR = "m.internal_error";
+
+    /** An error code returned to clients when a service cannot be
+     * performed because the requesting client does not have the proper
+     * access. */
+    public static final String ACCESS_DENIED = "m.access_denied";
+}