/*

  * 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 javax.faces.internal;

 import javax.faces.context.ExternalContext;

 import org.seasar.framework.util.AssertionUtil;

 import org.seasar.framework.util.StringUtil;

 /**

  * @author shot

  */

 public class WindowIdEncodeUrlCustomizer implements EncodeUrlCustomizer {

     private static final long serialVersionUID = 1L;

     public String encodeActionUrl(final ExternalContext externalContext,

             final String url) {

         return encodeResourceUrl(externalContext, url);

     }

     public String encodeResourceUrl(final ExternalContext externalContext,

             final String url) {

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

         AssertionUtil

                 .assertNotNull("externalContext is null.", externalContext);

         final String wid = WindowIdUtil.getWindowId(externalContext);

         if (StringUtil.isEmpty(wid)) {

             return url;

         }

         final StringBuffer buf = new StringBuffer(url.length() +

                 WindowIdUtil.WID.length() + 2);

         buf.append(url);

         if (url.lastIndexOf("?") > -1) {

             buf.append("&");

         } else {

             buf.append("?");

         }

         buf.append(WindowIdUtil.WID);

         buf.append("=");

         buf.append(wid);

         return buf.toString();

     }

     //do nothing

     public String encodeNamespace(final String name) {

         return name;

     }

 }