    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
    015    package org.apache.tapestry5.dom;
    016
    017    import org.apache.tapestry5.ioc.internal.util.CollectionFactory;
    018
    019    import 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     */
    027    public 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    }