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
015package org.apache.tapestry5.internal.services;
016
017import java.io.IOException;
018import java.io.PrintWriter;
019
020import org.apache.tapestry5.ContentType;
021import org.apache.tapestry5.SymbolConstants;
022import org.apache.tapestry5.internal.InternalConstants;
023import org.apache.tapestry5.ioc.annotations.Symbol;
024import org.apache.tapestry5.json.JSONArray;
025import org.apache.tapestry5.services.ComponentEventResultProcessor;
026import org.apache.tapestry5.services.Response;
027
028public 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}