001// Copyright 2007, 2008, 2010, 2012 The Apache Software Foundation
002//
003// Licensed under the Apache License, Version 2.0 (the "License");
004// you may not use this file except in compliance with the License.
005// You may obtain a copy of the License at
006//
007// http://www.apache.org/licenses/LICENSE-2.0
008//
009// Unless required by applicable law or agreed to in writing, software
010// distributed under the License is distributed on an "AS IS" BASIS,
011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012// See the License for the specific language governing permissions and
013// limitations under the License.
014
015package org.apache.tapestry5.internal.services;
016
017import org.apache.tapestry5.json.JSONObject;
018import org.apache.tapestry5.services.ComponentEventResultProcessor;
019
020import java.io.IOException;
021
022/**
023 * Implementation of {@link ComponentEventResultProcessor} for {@link org.apache.tapestry5.json.JSONObject}, allowing a
024 * component event handler to return a JSONObject that will be sent directly to the client as the reply. This is often
025 * used with custom components that need a custom JSON response.
026 */
027public class JSONObjectEventResultProcessor implements ComponentEventResultProcessor<JSONObject>
028{
029    private final AjaxPartialResponseRenderer ajaxPartialResponseRenderer;
030
031    public JSONObjectEventResultProcessor(AjaxPartialResponseRenderer ajaxPartialResponseRenderer)
032    {
033        this.ajaxPartialResponseRenderer = ajaxPartialResponseRenderer;
034    }
035
036    public void processResultValue(JSONObject value) throws IOException
037    {
038        ajaxPartialResponseRenderer.renderPartialPageMarkup(value);
039    }
040}