Fixed enum binding support (issue #49)

test/com/google/gwt/inject/client/binding/FruitGinModule.java

 /*
  * Copyright 2008 Google Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may not
  * use this file except in compliance with the License. You may obtain a copy of
  * the License at
  *
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
@@ skipping 15 matching lines @@
   // Guice does not support byte constants.
   /*public static final byte ID = 0x41;*/
   public static final char INITIAL = 'a';
   public static final double VOLUME = 20.2;
   public static final float WEIGHT = 200.5f;
   public static final int SEEDS = 4;
   public static final long WORMS = 1;
   public static final short LEAVES = 2;
   public static final String NAME = "Apple";
   public static final Color COLOR = Color.Red;
+  public static final Color ALTERNATIVE_COLOR = Color.Yellow;
+  public static final Fruit.Family FAMILY = Fruit.Family.Rosaceae;
 
   protected void configure() {
     bindConstant().annotatedWith(Names.named("eaten")).to(EATEN);
     /*bindConstant().annotatedWith(Names.named("id")).to(ID);*/
     bindConstant().annotatedWith(Names.named("initial")).to(INITIAL);
     bindConstant().annotatedWith(Names.named("volume")).to(VOLUME);
     bindConstant().annotatedWith(Names.named("weight")).to(WEIGHT);
     bindConstant().annotatedWith(Names.named("seeds")).to(SEEDS);
     bindConstant().annotatedWith(Names.named("worms")).to(WORMS);
     bindConstant().annotatedWith(Names.named("leaves")).to(LEAVES);
     bindConstant().annotatedWith(Names.named("name")).to(NAME);
     bindConstant().annotatedWith(Names.named("color")).to(COLOR);
+
+    // Bind enum with custom implementation.
+    bindConstant().annotatedWith(Names.named("alternativeColor")).to(ALTERNATIVE_COLOR);
+    bindConstant().annotatedWith(Names.named("family")).to(FAMILY);
   }
 }