Added oid lists and the ability to add and remove oids from them

(incomplete).


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@99 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/presents/dobj/ObjectAddedEvent.java

@@ -0,0 +1,108 @@
+//
+// $Id: ObjectAddedEvent.java,v 1.1 2001/07/21 01:06:48 mdb Exp $
+
+package com.threerings.cocktail.cher.dobj;
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.lang.reflect.Method;
+
+import com.threerings.cocktail.cher.dobj.io.ValueMarshaller;
+
+/**
+ * An object added event is dispatched when an object is added to an
+ * <code>OidList</code> attribute of a distributed object. It can also be
+ * constructed to request the addition of an oid to an
+ * <code>OidList</code> attribute of an object and posted to the dobjmgr.
+ *
+ * @see DObjectManager.postEvent
+ */
+public class ObjectAddedEvent extends TypedEvent
+{
+    /** The typed object code for this event. */
+    public static final short TYPE = TYPE_BASE + 4;
+
+    /**
+     * Constructs a new object added event on the specified target object
+     * with the supplied oid list attribute name and object id to add.
+     *
+     * @param targetOid the object id of the object to whose oid list we
+     * will add an oid.
+     * @param name the name of the attribute (data member) to which to add
+     * the specified oid.
+     * @param oid the oid to add to the oid list attribute.
+     */
+    public ObjectAddedEvent (int targetOid, String name, int oid)
+    {
+        super(targetOid);
+        _name = name;
+        _oid = oid;
+    }
+
+    /**
+     * Constructs a blank instance of this event in preparation for
+     * unserialization from the network.
+     */
+    public ObjectAddedEvent ()
+    {
+    }
+
+    /**
+     * Returns the name of the oid list attribute to which an oid has been
+     * added.
+     */
+    public String getName ()
+    {
+        return _name;
+    }
+
+    /**
+     * Returns the oid that has been added.
+     */
+    public int getOid ()
+    {
+        return _oid;
+    }
+
+    /**
+     * Applies this event to the object.
+     */
+    public boolean applyToObject (DObject target)
+        throws ObjectAccessException
+    {
+        OidList list = (OidList)target.getAttribute(_name);
+        list.add(_oid);
+        return true;
+    }
+
+    public short getType ()
+    {
+        return TYPE;
+    }
+
+    public void writeTo (DataOutputStream out)
+        throws IOException
+    {
+        super.writeTo(out);
+        out.writeUTF(_name);
+        out.writeInt(_oid);
+    }
+
+    public void readFrom (DataInputStream in)
+        throws IOException
+    {
+        super.readFrom(in);
+        _name = in.readUTF();
+        _oid = in.readInt();
+    }
+
+    public String toString ()
+    {
+        return "[OBJADD:targetOid=" + _toid + ", name=" + _name +
+            ", oid=" + _oid + "]";
+    }
+
+    protected String _name;
+    protected int _oid;
+}