001// ***************************************************************************************************************************
002// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.  See the NOTICE file *
003// * distributed with this work for additional information regarding copyright ownership.  The ASF licenses this file        *
004// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance            *
005// * with the License.  You may obtain a copy of the License at                                                              *
006// *                                                                                                                         *
007// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
008// *                                                                                                                         *
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010// * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the        *
011// * specific language governing permissions and limitations under the License.                                              *
012// ***************************************************************************************************************************
013package org.apache.juneau.rest.widget;
014
015import static org.apache.juneau.dto.html5.HtmlBuilder.*;
016
017import org.apache.juneau.dto.html5.*;
018import org.apache.juneau.rest.*;
019import org.apache.juneau.utils.*;
020
021/**
022 * Widget that returns back a list of hyperlinks for rendering the contents of a page in the various default styles.
023 * 
024 * <p>
025 * The variable it resolves is <js>"$W{StyleMenuItem}"</js>.
026 * 
027 * <p>
028 * An example of this widget can be found in the <code>PetStoreResource</code> in the examples that provides
029 * a drop-down menu item for rendering all other supported content types in plain text:
030 * <p class='bcode'>
031 *    <ja>@RestMethod</ja>(
032 *       name=<jsf>GET</jsf>,
033 *       path=<js>"/"</js>,
034 *       widgets={
035 *          StyleMenuItem.<jk>class</jk>,
036 *       },
037 *       htmldoc=<ja>@HtmlDoc</ja>(
038 *          navlinks={
039 *             <js>"up: ..."</js>,
040 *             <js>"options: ..."</js>,
041 *             <js>"$W{QueryMenuItem}"</js>,
042 *             <js>"$W{ContentTypeMenuItem}"</js>,
043 *             <js>"$W{StyleMenuItem}"</js>,
044 *             <js>"source: ..."</js>
045 *          }
046 *       )
047 *    )
048 *    <jk>public</jk> Collection&lt;Pet&gt; getPets() {
049 * </p>
050 * 
051 * <h5 class='section'>See Also:</h5>
052 * <ul>
053 *    <li class='link'><a class="doclink" href="../../../../../overview-summary.html#juneau-rest-server.Widgets">Overview &gt; juneau-rest-server &gt; Widgets</a>
054 * </ul>
055 */
056public class StyleMenuItem extends MenuItemWidget {
057
058   private static final String[] BUILT_IN_STYLES = {"devops", "light", "original", "dark"};
059
060   @Override /* Widget */
061   public String getLabel(RestRequest req) {
062      return "styles";
063   }
064   /**
065    * Looks at the supported media types from the request and constructs a list of hyperlinks to render the data
066    * as plain-text.
067    */
068   @Override /* MenuItemWidget */
069   public Div getContent(RestRequest req) throws Exception {
070      Div div = div();
071      for (String s : BUILT_IN_STYLES) {
072         java.net.URI uri = req.getUri(true, new AMap<String,String>().append("stylesheet", "styles/"+s+".css"));
073         div.children(a(uri, s), br());
074      }
075      return div;
076   }
077}