001// Copyright 2011 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.corelib.components;
016
017import org.apache.tapestry5.BindingConstants;
018import org.apache.tapestry5.MarkupWriter;
019import org.apache.tapestry5.annotations.Parameter;
020
021/**
022 * Overrides the DOCTYPE of the rendered document (via {@link org.apache.tapestry5.dom.Document#dtd(String, String, String)}
023 * which can be useful when different component templates that render to the same document disagree about what the correct DOCTYPE
024 * is.
025 *
026 * @tapestrydoc
027 * @since 5.3
028 */
029public class Doctype
030{
031    @Parameter(required = true, allowNull = false, defaultPrefix = BindingConstants.LITERAL)
032    private String name;
033
034    @Parameter(defaultPrefix = BindingConstants.LITERAL)
035    private String publicId, systemId;
036
037    boolean beginRender(MarkupWriter writer)
038    {
039        writer.getDocument().dtd(name, publicId, systemId);
040
041        return false;
042    }
043}