/*

 * Copyright (c) 2019, 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 build.tools.taglet;

import java.util.EnumSet;

import java.util.List;

import java.util.Set;

import javax.lang.model.element.Element;

import com.sun.source.doctree.DocTree;

import com.sun.source.doctree.UnknownBlockTagTree;

import jdk.javadoc.doclet.Taglet;

import static jdk.javadoc.doclet.Taglet.Location.*;

/**

 * An block tag to insert a standard warning about a preview API.

 */

public class Preview implements Taglet {

    /** Returns the set of locations in which a taglet may be used. */

    @Override

    public Set<Location> getAllowedLocations() {

        return EnumSet.of(MODULE, PACKAGE, TYPE, CONSTRUCTOR, METHOD, FIELD);

    }

    @Override

    public boolean isInlineTag() {

        return false;

    }

    @Override

    public String getName() {

        return "preview";

    }

    @Override

    public String toString(List<? extends DocTree> tags, Element elem) {

        StringBuilder sb = new StringBuilder();

	sb.append("<dt>Preview Feature:\n");

        for (DocTree tag : tags) {

	    UnknownBlockTagTree ubt = (UnknownBlockTagTree) tag;

	    sb.append("<dd style=\"border: 1px solid red; border-radius: 5px; padding: 5px; font-size: larger\"> <b>Preview:</b> ")

		.append(ubt.getContent()); 

        }

	return sb.toString();

    }

}