// Copyright 2007, 2008 The Apache Software Foundation

 //

 // 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.apache.tapestry5.internal.services;

 import java.io.IOException;

 /**

  * Used to render portions of a page as part of an {@linkplain AjaxComponentEventRequestHandler Ajax request}.    This

  * encapsulates rendering of the partial response and then the construction of a {@linkplain

  * org.apache.tapestry5.json.JSONObject JSON reply}. Works with the pipeline defined by the {@link

  * org.apache.tapestry5.services.PartialMarkupRenderer} service.

  *

  * @see org.apache.tapestry5.internal.services.PageRenderQueue

  */

 public interface AjaxPartialResponseRenderer

 {

     /**

      * Used to render a partial response as part of an Ajax action request. A call to {@link

      * org.apache.tapestry5.internal.services.PageRenderQueue#initializeForPartialPageRender(org.apache.tapestry5.runtime.RenderCommand)}

      * should precede this call.

      */

     void renderPartialPageMarkup() throws IOException;

 }