/*

  * Copyright 2004-2011 the Seasar Foundation and the Others.

  *

  * 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.seasar.teeda.core.application;

 import java.io.IOException;

 import javax.faces.component.ActionSource;

 import javax.faces.context.ExternalContext;

 import javax.faces.context.FacesContext;

 import javax.faces.el.EvaluationException;

 import javax.faces.el.MethodBinding;

 import javax.faces.event.AbortProcessingException;

 import javax.faces.event.ActionEvent;

 import javax.faces.event.ActionListener;

 import org.seasar.framework.log.Logger;

 import org.seasar.teeda.core.util.ErrorPageManager;

 import org.seasar.teeda.core.util.MethodBindingUtil;

 import org.seasar.teeda.core.util.NavigationHandlerUtil;

 import org.seasar.teeda.core.util.NullErrorPageManagerImpl;

 /**

  * @author higa

  */

 public class ActionListenerImpl implements ActionListener {

     private static Logger logger = Logger.getLogger(ActionListenerImpl.class);

     public static final String errorManager_BINDING = "bindingType=may";

     private ErrorPageManager errorPageManager = new NullErrorPageManagerImpl();

     public void processAction(ActionEvent actionEvent)

             throws AbortProcessingException {

         FacesContext context = FacesContext.getCurrentInstance();

         ActionSource actionSource = (ActionSource) actionEvent.getComponent();

         MethodBinding mb = actionSource.getAction();

         String fromAction = null;

         String outcome = null;

         if (mb != null) {

             fromAction = mb.getExpressionString();

             try {

                 outcome = MethodBindingUtil.invoke(mb, context);

                 processAfterInvoke(context, fromAction, outcome);

             } catch (EvaluationException ex) {

                 Throwable cause = ex.getCause();

                 try {

                     ExternalContext extContext = context.getExternalContext();

                     if (errorPageManager.handleException(cause, context,

                             extContext)) {

                         context.responseComplete();

                     } else {

                         throw ex;

                     }

                 } catch (IOException ioe) {

                     logger.log(ioe);

                     throw ex;

                 }

             }

         }

         NavigationHandlerUtil.handleNavigation(context, fromAction, outcome);

         context.renderResponse();

     }

     protected void processAfterInvoke(FacesContext context, String fromAction,

             String outcome) {

     }

     public ErrorPageManager getErrorPageManager() {

         return errorPageManager;

     }

     public void setErrorPageManager(ErrorPageManager errorPageManager) {

         this.errorPageManager = errorPageManager;

     }

 }