/*
    * Copyright (C) 2013 4th Line GmbH, Switzerland
    *
    * The contents of this file are subject to the terms of either the GNU
    * Lesser General Public License Version 2 or later ("LGPL") or the
    * Common Development and Distribution License Version 1 or later
    * ("CDDL") (collectively, the "License"). You may not use this file
    * except in compliance with the License. See LICENSE.txt for more
    * information.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   */
  
  package org.fourthline.cling.support.shared;
  
  import java.lang.reflect.InvocationHandler;
  import java.lang.reflect.Method;
  import java.lang.reflect.Proxy;
  
  /**
   * @author Christian Bauer
   */
  public class NewPlatformApple {
  
      public static void setup(final ShutdownHandler shutdownHandler, String appName) throws Exception {
  
          System.setProperty("apple.laf.useScreenMenuBar", "true");
          System.setProperty("com.apple.mrj.application.apple.menu.about.name", appName);
          System.setProperty("apple.awt.showGrowBox", "true");
  
          // Use reflection to avoid compile-time dependency
          Class appClass = Class.forName("com.apple.eawt.Application");
          Object application = appClass.newInstance();
          Class listenerClass = Class.forName("com.apple.eawt.ApplicationListener");
          Method addAppListmethod = appClass.getDeclaredMethod("addApplicationListener", listenerClass);
  
          // creating and adding a custom adapter/listener to the Application
          Class adapterClass = Class.forName("com.apple.eawt.ApplicationAdapter");
          Object listener = AppListenerProxy.newInstance(adapterClass.newInstance(), shutdownHandler);
          addAppListmethod.invoke(application, listener);
      }
  
      static class AppListenerProxy implements InvocationHandler {
  
          private ShutdownHandler shutdownHandler;
          private Object object;
  
          public static Object newInstance(Object obj, ShutdownHandler shutdownHandler) {
              return Proxy.newProxyInstance(
                      obj.getClass().getClassLoader(),
                      obj.getClass().getInterfaces(),
                      new AppListenerProxy(obj, shutdownHandler)
              );
          }
  
          private AppListenerProxy(Object obj, ShutdownHandler shutdownHandler) {
              this.object = obj;
              this.shutdownHandler = shutdownHandler;
          }
  
          public Object invoke(Object proxy, Method m, Object[] args) throws Throwable {
              Object result = null;
              try {
                  if ("handleQuit".equals(m.getName())) {
                      if (shutdownHandler != null) {
                          shutdownHandler.shutdown();
                      }
                  } else {
                      result = m.invoke(object, args);
                  }
              } catch (Exception e) {
                  // Ignore
              }
              return result;
          }
  
      }
  
  }