Added a new type of chat message: a UserSystemMessage is a system message

triggered by the activity of another user. The other username is provided
so that the message can be muted if desired.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@3770 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/crowd/chat/data/UserSystemMessage.java

@@ -0,0 +1,41 @@
+//
+// $Id$
+
+package com.threerings.crowd.chat.data;
+
+import com.threerings.util.Name;
+
+/**
+ * A system message triggered by the activity of another user.
+ * If the user is muted we can suppress this message, unlike a normal
+ * system message.
+ */
+public class UserSystemMessage extends SystemMessage
+{
+    /** The "speaker" of this message, the user that triggered that this
+     * message be sent to us. */
+    public Name speaker;
+
+    /** Suitable for unserialization. */
+    public UserSystemMessage ()
+    {
+    }
+
+    /**
+     * Construct a INFO-level UserSystemMessage.
+     */
+    public UserSystemMessage (Name sender, String message, String bundle)
+    {
+        this(sender, message, bundle, INFO);
+    }
+
+    /**
+     * Construct a UserSystemMessage.
+     */
+    public UserSystemMessage (Name sender, String message, String bundle,
+            byte attentionLevel)
+    {
+        super(message, bundle, attentionLevel);
+        this.speaker = sender;
+    }
+}