    001    // Copyright 2008, 2010 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
    015    package org.apache.tapestry5.internal.services;
    016
    017    import java.io.IOException;
    018    import java.io.PrintWriter;
    019
    020    import org.apache.tapestry5.ContentType;
    021    import org.apache.tapestry5.SymbolConstants;
    022    import org.apache.tapestry5.internal.InternalConstants;
    023    import org.apache.tapestry5.ioc.annotations.Symbol;
    024    import org.apache.tapestry5.json.JSONArray;
    025    import org.apache.tapestry5.services.ComponentEventResultProcessor;
    026    import org.apache.tapestry5.services.Response;
    027
    028    public class JSONArrayEventResultProcessor implements ComponentEventResultProcessor<JSONArray>
    029    {
    030        private final Response response;
    031
    032        private final String outputEncoding;
    033
    034        private final boolean compactJSON;
    035
    036        public JSONArrayEventResultProcessor(Response response,
    037
    038        @Symbol(SymbolConstants.CHARSET)
    039        String outputEncoding,
    040
    041        @Symbol(SymbolConstants.COMPACT_JSON)
    042        boolean compactJSON)
    043        {
    044            this.response = response;
    045            this.outputEncoding = outputEncoding;
    046            this.compactJSON = compactJSON;
    047        }
    048
    049        public void processResultValue(JSONArray value) throws IOException
    050        {
    051            ContentType contentType = new ContentType(InternalConstants.JSON_MIME_TYPE, outputEncoding);
    052
    053            PrintWriter pw = response.getPrintWriter(contentType.toString());
    054
    055            value.print(pw, compactJSON);
    056
    057            pw.close();
    058        }
    059    }