/*

  * Copyright 2005,2009 Ivan SZKIBA

  *

  * 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

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.ini4j;

 import org.ini4j.spi.AbstractBeanInvocationHandler;

 import java.lang.reflect.Proxy;

 import java.util.prefs.Preferences;

 public final class PreferencesBean

 {

     private PreferencesBean()

     {

     }

     public static <T> T newInstance(Class<T> clazz, final Preferences prefs)

     {

         return clazz.cast(Proxy.newProxyInstance(clazz.getClassLoader(), new Class[] { clazz }, new Handler(prefs)));

     }

     private static class Handler extends AbstractBeanInvocationHandler

     {

         private final Preferences _prefs;

         public Handler(Preferences prefs)

         {

             _prefs = prefs;

         }

         @Override protected Object getPropertySpi(String property, Class<?> clazz)

         {

             return _prefs.get(property, null);

         }

         @Override protected void setPropertySpi(String property, Object value, Class<?> clazz)

         {

             _prefs.put(property, value.toString());

         }

         @Override protected boolean hasPropertySpi(String property)

         {

             return _prefs.get(property, null) != null;

         }

     }

 }