/*
 * Copyright (c) 2001, 2016, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package jdk.javadoc.internal.doclets.toolkit.taglets;

import javax.lang.model.element.Element;

import com.sun.source.doctree.DocTree;
import jdk.javadoc.internal.doclets.toolkit.Content;

import static com.sun.source.doctree.DocTree.Kind.*;

/**
 * An inline Taglet representing {@docRoot}.  This taglet is
 * used to get the relative path to the document's root output
 * directory.
 *
 *  <p><b>This is NOT part of any supported API.
 *  If you write code that depends on this, you do so at your own risk.
 *  This code and its internal interfaces are subject to change or
 *  deletion without notice.</b>
 *
 * @author Jamie Ho
 * @author Doug Kramer
 */

public class DocRootTaglet extends BaseInlineTaglet {


    /**
     * Construct a new DocRootTaglet.
     */
    public DocRootTaglet() {
        name = DOC_ROOT.tagName;
    }

    /**
     * Given a <code>Doc</code> object, check if it holds any tags of
     * this type.  If it does, return the string representing the output.
     * If it does not, return null.
     * @param holder
     * @param tag a tag representing the custom tag.
     * @param writer a {@link TagletWriter} Taglet writer.
     * @return the string representation of this <code>Tag</code>.
     */
    public Content getTagletOutput(Element holder, DocTree tag, TagletWriter writer) {
        return writer.getDocRootOutput();
    }
}