    001// Copyright 2006, 2007, 2008, 2009 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.dom;
    016
    017import org.apache.tapestry5.ioc.internal.util.CollectionFactory;
    018
    019import java.util.Set;
    020
    021/**
    022 * Default implementation of {@link org.apache.tapestry5.dom.MarkupModel} that is appropriate for traditional (X)HTML
    023 * markup. Assumes that all tags are lower-case.  The majority of elements will be "expanded" (meaning a complete start
    024 * and end tag); this is for compatibility with web browsers, especially when the content type of a response indicates
    025 * HTML, not true XML. Only the "hr", "br","img", "link", and "meta" tags will be rendered abbreviated (i.e., "lt;img/&gt;").
    026 */
    027public class DefaultMarkupModel extends AbstractMarkupModel
    028{
    029    private final Set<String> ALWAYS_EMPTY = CollectionFactory.newSet("hr", "br", "img", "link", "meta");
    030
    031    public DefaultMarkupModel()
    032    {
    033        this(false);
    034    }
    035
    036    public DefaultMarkupModel(boolean useApostropheForAttributes)
    037    {
    038        super(useApostropheForAttributes);
    039    }
    040
    041    public EndTagStyle getEndTagStyle(String element)
    042    {
    043        boolean alwaysEmpty = ALWAYS_EMPTY.contains(element);
    044
    045        return alwaysEmpty ? EndTagStyle.ABBREVIATE : EndTagStyle.REQUIRE;
    046    }
    047
    048    /**
    049     * Returns false.
    050     */
    051    public boolean isXML()
    052    {
    053        return false;
    054    }
    055}