package org.jtheque.core.spring.factory;

 /*

  * This file is part of JTheque.

  *

  * JTheque is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, either version 3 of the License.

  *

  * JTheque 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.  See the

  * GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with JTheque.  If not, see <http://www.gnu.org/licenses/>.

  */

 import org.jtheque.core.managers.Managers;

 import org.jtheque.core.managers.beans.IBeansManager;

 import org.jtheque.core.managers.log.ILoggingManager;

 import javax.swing.SwingUtilities;

 import java.lang.reflect.InvocationHandler;

 import java.lang.reflect.InvocationTargetException;

 import java.lang.reflect.Method;

 /**

  * An invocation handler to disable the manager.

  *

  * @author Baptiste Wicht

  */

 final class LazyProxyHandler implements InvocationHandler {

     private final String beanName;

     private final boolean swing;

     private Object instance;

     /**

      * Construct a new LazyProxyHandler.

      *

      * @param beanName The name of the bean.

      * @param swing A boolean tag indicating if the bean is swing bean.

      */

     LazyProxyHandler(String beanName, boolean swing) {

         super();

         this.beanName = beanName;

         this.swing = swing;

     }

     @Override

     public Object invoke(Object proxy, Method method, Object[] args) throws InvocationTargetException, IllegalAccessException {

         if (instance == null) {

             Managers.getManager(ILoggingManager.class).getLogger(getClass()).debug("Init {} due to call to {}", beanName, method.toGenericString());

             if(swing && !SwingUtilities.isEventDispatchThread()){

                 try {

                     SwingUtilities.invokeAndWait(new Runnable(){

                         @Override

                         public void run() {

                             instance = Managers.getManager(IBeansManager.class).getBean(beanName);

                         }

                     });

                 } catch (InterruptedException e) {

                     Managers.getManager(ILoggingManager.class).getLogger(getClass()).error(e);

                 }

             } else {

                 instance = Managers.getManager(IBeansManager.class).getBean(beanName);

             }

         }

         return method.invoke(instance, args);

     }

 }