/*
    * @(#)$Id: Mapping.java 689 2009-07-22 00:10:27Z bsigner $
    *
    * Author       :   Ueli Kurmann, igesture@uelikurmann.ch
    *
    * Purpose      :   EDT Proxy. Executes all methods in the EDT.
    *
    * -----------------------------------------------------------------------
    *
   * Revision Information:
   *
   * Date             Who         Reason
   *
   * Aug 14, 2008     ukurmann    Initial Release
   *
   * -----------------------------------------------------------------------
   *
   * Copyright 1999-2009 ETH Zurich. All Rights Reserved.
   *
   * This software is the proprietary information of ETH Zurich.
   * Use is subject to license terms.
   * 
   */
  
  package org.ximtec.igesture.tool.core;
  
  import java.lang.reflect.InvocationHandler;
  import java.lang.reflect.Method;
  import java.lang.reflect.Proxy;
  import java.util.logging.Level;
  import java.util.logging.Logger;
  
  import javax.swing.SwingUtilities;
  
  public class EdtProxy implements InvocationHandler {
    
    private static final Logger LOGGER = Logger.getLogger(EdtProxy.class.getName());
  
    private Object view;
  
    private EdtProxy(Object view) {
      this.view = view;
    }
  
    @Override
    public Object invoke(final Object proxy, final Method method, final Object[] args) throws Throwable {
  
      final Object[] results = new Object[1];
  
      if (SwingUtilities.isEventDispatchThread()) {
        try {
          results[0] = method.invoke(view, args);
        } catch (Exception e) {
          LOGGER.log(Level.SEVERE, "Invocation Error. Already in EDT.", e);
        }
      } else {
        SwingUtilities.invokeAndWait(new Runnable() {
  
          @Override
          public void run() {
            try {
              results[0] = method.invoke(view, args);
            } catch (Exception e) {
              LOGGER.log(Level.SEVERE, "Invocation Error.", e);
            }
  
          }
        });
      }
  
      return results[0];
    }
  
    public static <T> T newInstance(T view, Class<T> type) {
  
      return type.cast(Proxy.newProxyInstance(view.getClass().getClassLoader(), view.getClass().getInterfaces(),
          new EdtProxy(view)));
    }
  
  }