More location observer stuff.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@144 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/crowd/client/LocationDirector.java

@@ -1,5 +1,5 @@
 //
-// $Id: LocationDirector.java,v 1.4 2001/07/23 22:59:43 mdb Exp $
+// $Id: LocationDirector.java,v 1.5 2001/08/02 04:59:54 mdb Exp $
 
 package com.threerings.cocktail.party.client;
 
@@ -33,6 +33,24 @@ public class LocationManager
         ctx.getClient().addObserver(this);
     }
 
+    /**
+     * Adds a location observer to the list. This observer will
+     * subsequently be notified of potential, effected and failed location
+     * changes.
+     */
+    public void addLocationObserver (LocationObserver observer)
+    {
+        _observers.add(observer);
+    }
+
+    /**
+     * Removes a location observer from the list.
+     */
+    public void removeLocationObserver (LocationObserver observer)
+    {
+        _observers.remove(observer);
+    }
+
     /**
      * Requests that this client be moved to the specified place. A
      * request will be made and when the response is received, the

src/java/com/threerings/crowd/client/LocationObserver.java

@@ -1,5 +1,5 @@
 //
-// $Id: LocationObserver.java,v 1.2 2001/07/23 22:59:43 mdb Exp $
+// $Id: LocationObserver.java,v 1.3 2001/08/02 04:59:54 mdb Exp $
 
 package com.threerings.cocktail.party.client;
 
@@ -22,6 +22,9 @@ public interface LocationObserver
      * Called when someone has requested that we switch to a new location.
      * An observer may choose to veto the location change request for some
      * reason or other.
+     *
+     * @return true if it's OK for the location to change, false if the
+     * change request should be aborted.
      */
     public boolean locationMayChange (int placeId);