/*

  * 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 java.util.Map;

 import javax.faces.component.EditableValueHolder;

 import javax.faces.component.UIComponent;

 import javax.faces.context.FacesContext;

 import org.seasar.framework.util.AssertionUtil;

 import org.seasar.teeda.core.exception.NoEditableValueHolderRuntimeException;

 /**

  * @author higa

  * @author manhole

  */

 public class DecodeUtil {

     private DecodeUtil() {

     }

     public static void decode(FacesContext context, UIComponent component) {

         AssertionUtil.assertNotNull("context is null.", context);

         AssertionUtil.assertNotNull("component is null.", component);

         if (!(component instanceof EditableValueHolder)) {

             throw new NoEditableValueHolderRuntimeException(component

                     .getClass());

         }

         EditableValueHolder evh = (EditableValueHolder) component;

         Map paramMap = context.getExternalContext().getRequestParameterMap();

         String clientId = component.getClientId(context);

         if (paramMap.containsKey(clientId)) {

             Object submittedValue = paramMap.get(clientId);

             evh.setSubmittedValue(submittedValue);

         }

     }

     public static void decodeMany(FacesContext context, UIComponent component) {

         AssertionUtil.assertNotNull("context is null.", context);

         AssertionUtil.assertNotNull("component is null.", component);

         if (!(component instanceof EditableValueHolder)) {

             throw new NoEditableValueHolderRuntimeException(component

                     .getClass());

         }

         EditableValueHolder evh = (EditableValueHolder) component;

         Map paramValuesMap = context.getExternalContext()

                 .getRequestParameterValuesMap();

         String clientId = component.getClientId(context);

         String[] value = null;

         if (paramValuesMap.containsKey(clientId)) {

             value = (String[]) paramValuesMap.get(clientId);

         }

         if (value != null) {

             evh.setSubmittedValue(value);

         } else {

             evh.setSubmittedValue(new String[0]);

         }

     }

 }