From 561f25bb189b91be38f54437a60ca8371ec41158 Mon Sep 17 00:00:00 2001
From: Michael Bayne <mdb@threerings.net>
Date: Sun, 27 Oct 2002 01:25:08 +0000
Subject: [PATCH] Provide the previous occupant info record when reporting an
 update so that observers can determine which fields have changed.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@1835 542714f4-19e9-0310-aa3c-eee0fc999fb1
---
 .../threerings/crowd/client/OccupantDirector.java | 15 ++++++++++++---
 .../threerings/crowd/client/OccupantObserver.java |  9 ++++++---
 2 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/src/java/com/threerings/crowd/client/OccupantDirector.java b/src/java/com/threerings/crowd/client/OccupantDirector.java
index 951d102be..db77edcd7 100644
--- a/src/java/com/threerings/crowd/client/OccupantDirector.java
+++ b/src/java/com/threerings/crowd/client/OccupantDirector.java
@@ -1,5 +1,5 @@
 //
-// $Id: OccupantDirector.java,v 1.2 2002/05/22 21:47:14 shaper Exp $
+// $Id: OccupantDirector.java,v 1.3 2002/10/27 01:25:08 mdb Exp $
 
 package com.threerings.crowd.client;
 
@@ -168,15 +168,24 @@ public class OccupantDirector
             return;
         }
 
-        // update our cache
         OccupantInfo info = (OccupantInfo)event.getEntry();
         int bodyOid = info.getBodyOid();
+
+        // grab the old info to give observers a chance to figure out what
+        // changed
+        OccupantInfo oinfo = (OccupantInfo)_ocache.get(bodyOid);
+        if (oinfo == null) {
+            Log.warning("Urk! Occupant updated for whom we we have no " +
+                        "prior info record [info=" + info + "].");
+        }
+
+        // update our cache
         _ocache.put(bodyOid, info);
 
         // now let the occupant observers know what's up
         for (int i = 0; i < _observers.size(); i++) {
             OccupantObserver obs = (OccupantObserver)_observers.get(i);
-            obs.occupantUpdated(info);
+            obs.occupantUpdated(oinfo, info);
         }
     }
 
diff --git a/src/java/com/threerings/crowd/client/OccupantObserver.java b/src/java/com/threerings/crowd/client/OccupantObserver.java
index 2b8fc3c52..eb243d198 100644
--- a/src/java/com/threerings/crowd/client/OccupantObserver.java
+++ b/src/java/com/threerings/crowd/client/OccupantObserver.java
@@ -1,5 +1,5 @@
 //
-// $Id: OccupantObserver.java,v 1.3 2002/04/15 14:38:45 shaper Exp $
+// $Id: OccupantObserver.java,v 1.4 2002/10/27 01:25:08 mdb Exp $
 
 package com.threerings.crowd.client;
 
@@ -23,7 +23,10 @@ public interface OccupantObserver
     public void occupantLeft (OccupantInfo info);
 
     /**
-     * Called an occupant is updated.
+     * Called when an occupant is updated.
+     *
+     * @param oldinfo the occupant info prior to the update.
+     * @param newinfo the newly update info record.
      */
-    public void occupantUpdated (OccupantInfo info);
+    public void occupantUpdated (OccupantInfo oldinfo, OccupantInfo newinfo);
 }