    001// Licensed under the Apache License, Version 2.0 (the "License");
    002// you may not use this file except in compliance with the License.
    003// You may obtain a copy of the License at
    004//
    005// http://www.apache.org/licenses/LICENSE-2.0
    006//
    007// Unless required by applicable law or agreed to in writing, software
    008// distributed under the License is distributed on an "AS IS" BASIS,
    009// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    010// See the License for the specific language governing permissions and
    011// limitations under the License.
    012
    013package org.apache.tapestry5.internal.services;
    014
    015import org.apache.tapestry5.ContentType;
    016import org.apache.tapestry5.SymbolConstants;
    017import org.apache.tapestry5.internal.InternalConstants;
    018import org.apache.tapestry5.ioc.annotations.Symbol;
    019import org.apache.tapestry5.json.JSONArray;
    020import org.apache.tapestry5.services.ComponentEventResultProcessor;
    021import org.apache.tapestry5.services.Response;
    022
    023import java.io.IOException;
    024import java.io.PrintWriter;
    025
    026public class JSONArrayEventResultProcessor implements ComponentEventResultProcessor<JSONArray>
    027{
    028    private final Response response;
    029
    030    private final boolean compactJSON;
    031
    032    private final ContentType contentType;
    033
    034    public JSONArrayEventResultProcessor(Response response,
    035
    036                                         @Symbol(SymbolConstants.CHARSET)
    037                                         String outputEncoding,
    038
    039                                         @Symbol(SymbolConstants.COMPACT_JSON)
    040                                         boolean compactJSON)
    041    {
    042        this.response = response;
    043        this.compactJSON = compactJSON;
    044
    045        contentType = new ContentType(InternalConstants.JSON_MIME_TYPE).withCharset(outputEncoding);
    046    }
    047
    048    public void processResultValue(JSONArray value) throws IOException
    049    {
    050        PrintWriter pw = response.getPrintWriter(contentType.toString());
    051
    052        value.print(pw, compactJSON);
    053
    054        pw.close();
    055    }
    056}