Beginnings of event stuff.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@18 542714f4-19e9-0310-aa3c-eee0fc999fb1

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

@@ -0,0 +1,97 @@
+//
+// $Id: AttributeChangedEvent.java,v 1.1 2001/06/01 07:12:13 mdb Exp $
+
+package com.threerings.cocktail.cher.dobj;
+
+/**
+ * An attribute changed event is dispatched when a single attribute of a
+ * distributed object has changed. It can also be constructed to request
+ * an attribute change on an object and posted to the dobjmgr.
+ *
+ * @see DObjectManager.postEvent
+ */
+public class AttributeChangedEvent extends DEvent
+{
+    /**
+     * Constructs a new attribute changed event on the specified target
+     * object with the supplied attribute name and value.
+     *
+     * @param targetOid the object id of the object whose attribute has
+     * changed.
+     * @param name the name of the attribute (data member) that has
+     * changed.
+     * @param value the new value of the attribute (in the case of
+     * primitive types, the reflection-defined object-alternative is
+     * used).
+     */
+    public AttributeChangedEvent (int targetOid, String name, Object value)
+    {
+        super(targetOid);
+        _name = name;
+        _value = value;
+    }
+
+    /**
+     * Returns the name of the attribute that has changed.
+     */
+    public String getName ()
+    {
+        return _name;
+    }
+
+    /**
+     * Returns the new value of the attribute.
+     */
+    public Object getValue ()
+    {
+        return _value;
+    }
+
+    /**
+     * Returns the new value of the attribute as a short. This will fail
+     * if the attribute in question is not a short.
+     */
+    public short getShortValue ()
+    {
+        return ((Short)_value).shortValue();
+    }
+
+    /**
+     * Returns the new value of the attribute as an int. This will fail if
+     * the attribute in question is not an int.
+     */
+    public int getIntValue ()
+    {
+        return ((Integer)_value).intValue();
+    }
+
+    /**
+     * Returns the new value of the attribute as a long. This will fail if
+     * the attribute in question is not a long.
+     */
+    public long getLongValue ()
+    {
+        return ((Long)_value).longValue();
+    }
+
+    /**
+     * Returns the new value of the attribute as a float. This will fail
+     * if the attribute in question is not a float.
+     */
+    public float getFloatValue ()
+    {
+        return ((Float)_value).floatValue();
+    }
+
+    /**
+     * Returns the new value of the attribute as a double. This will fail
+     * if the attribute in question is not a double.
+     */
+    public double getDoubleValue ()
+    {
+        return ((Double)_value).doubleValue();
+    }
+
+    protected String _name;
+    protected Object _value;
+}