/*

  * 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.util;

 import javax.faces.context.FacesContext;

 import javax.faces.el.EvaluationException;

 import javax.faces.el.MethodBinding;

 import javax.faces.event.AbortProcessingException;

 import org.seasar.framework.util.AssertionUtil;

 public class MethodBindingUtil {

     private MethodBindingUtil() {

     }

     public static String getComponentName(final String fromAction) {

         if (fromAction == null) {

             return null;

         }

         if (!BindingUtil.isValueReference(fromAction)) {

             return null;

         }

         int index = fromAction.indexOf('.');

         if (index > 0) {

             return fromAction.substring(2, index);

         }

         return null;

     }

     public static String getMethodName(final String fromAction) {

         if (fromAction == null) {

             return null;

         }

         if (!BindingUtil.isValueReference(fromAction)) {

             return null;

         }

         int index = fromAction.lastIndexOf('.');

         if (index > 0) {

             return fromAction.substring(index + 1, fromAction.length() - 1);

         }

         return null;

     }

     public static String getFromAction(String componentName, String methodName) {

         AssertionUtil.assertNotNull("componentName", componentName);

         AssertionUtil.assertNotNull("methodName", methodName);

         return "#{" + componentName + "." + methodName + "}";

     }

     public static String invoke(MethodBinding methodBinding,

             FacesContext context) {

         try {

             return (String) methodBinding.invoke(context, null);

         } catch (EvaluationException e) {

             Throwable cause = e.getCause();

             if (cause != null && cause instanceof AbortProcessingException) {

                 throw (AbortProcessingException) cause;

             }

             throw e;

         }

     }

 }