001    // Copyright 2005 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.tapestry.markup;
016    
017    import java.io.PrintWriter;
018    
019    import org.apache.tapestry.IMarkupWriter;
020    import org.apache.tapestry.util.ContentType;
021    
022    /**
023     * Service interface for <code>tapestry.markup.MarkupWriterSource</code> service. A factory
024     * service that creates new instances of {@link org.apache.tapestry.IMarkupWriter}, configured for
025     * different content types;
026     * 
027     * @author Howard M. Lewis Ship
028     * @since 4.0
029     */
030    public interface MarkupWriterSource
031    {
032        /**
033         * Creates and returns a new instance of {@link org.apache.tapestry.IMarkupWriter}. The content
034         * type is used to find the proper implemenation. Any additional content type data (after a ';')
035         * is ignored.
036         * 
037         * @param writer
038         *            The {@link PrintWriter}&nbsp;to which the markup writer should send output.
039         * @param contentType
040         *            Used to locate the correct markup writer implementation (used to select a
041         *            {@link MarkupFilter}.
042         * @return The configured markup writer instance.
043         */
044    
045        public IMarkupWriter newMarkupWriter(PrintWriter writer, ContentType contentType);
046    }