src/share/classes/com/sun/tools/doclets/internal/toolkit/util/MetaKeywords.java

Thu, 02 Oct 2008 19:58:40 -0700

author
xdono
date
Thu, 02 Oct 2008 19:58:40 -0700
changeset 117
24a47c3062fe
parent 74
5a9172b251dd
child 140
22c4c1143a3a
permissions
-rw-r--r--

6754988: Update copyright year
Summary: Update for files that have been modified starting July 2008
Reviewed-by: ohair, tbell

duke@1 1 /*
xdono@117 2 * Copyright 2002-2008 Sun Microsystems, Inc. All Rights Reserved.
duke@1 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@1 4 *
duke@1 5 * This code is free software; you can redistribute it and/or modify it
duke@1 6 * under the terms of the GNU General Public License version 2 only, as
duke@1 7 * published by the Free Software Foundation. Sun designates this
duke@1 8 * particular file as subject to the "Classpath" exception as provided
duke@1 9 * by Sun in the LICENSE file that accompanied this code.
duke@1 10 *
duke@1 11 * This code is distributed in the hope that it will be useful, but WITHOUT
duke@1 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@1 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@1 14 * version 2 for more details (a copy is included in the LICENSE file that
duke@1 15 * accompanied this code).
duke@1 16 *
duke@1 17 * You should have received a copy of the GNU General Public License version
duke@1 18 * 2 along with this work; if not, write to the Free Software Foundation,
duke@1 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@1 20 *
duke@1 21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@1 22 * CA 95054 USA or visit www.sun.com if you need additional information or
duke@1 23 * have any questions.
duke@1 24 */
duke@1 25
duke@1 26 package com.sun.tools.doclets.internal.toolkit.util;
duke@1 27
duke@1 28 import com.sun.tools.doclets.internal.toolkit.*;
duke@1 29 import com.sun.javadoc.*;
duke@1 30 import java.util.*;
duke@1 31
duke@1 32 /**
duke@1 33 * Provides methods for creating an array of class, method and
duke@1 34 * field names to be included as meta keywords in the HTML header
duke@1 35 * of class pages. These keywords improve search results
duke@1 36 * on browsers that look for keywords.
duke@1 37 *
duke@1 38 * This code is not part of an API.
duke@1 39 * It is implementation that is subject to change.
duke@1 40 * Do not use it as an API
duke@1 41 *
duke@1 42 * @author Doug Kramer
duke@1 43 */
duke@1 44 public class MetaKeywords {
duke@1 45
duke@1 46 private static MetaKeywords instance = null;
duke@1 47
duke@1 48 /**
duke@1 49 * The global configuration information for this run.
duke@1 50 */
duke@1 51 private final Configuration configuration;
duke@1 52
duke@1 53 /**
duke@1 54 * Constructor
duke@1 55 */
duke@1 56 private MetaKeywords(Configuration configuration) {
duke@1 57 this.configuration = configuration;
duke@1 58 }
duke@1 59
duke@1 60 /**
duke@1 61 * Return an instance of MetaKeywords. This class is a singleton.
duke@1 62 *
duke@1 63 * @param configuration the current configuration of the doclet.
duke@1 64 */
duke@1 65 public static MetaKeywords getInstance(Configuration configuration) {
duke@1 66 if (instance == null) {
duke@1 67 instance = new MetaKeywords(configuration);
duke@1 68 }
duke@1 69 return instance;
duke@1 70 }
duke@1 71
duke@1 72 /**
duke@1 73 * Returns an array of strings where each element
duke@1 74 * is a class, method or field name. This array is
duke@1 75 * used to create one meta keyword tag for each element.
duke@1 76 * Method parameter lists are converted to "()" and
duke@1 77 * overloads are combined.
duke@1 78 *
duke@1 79 * Constructors are not included because they have the same
duke@1 80 * name as the class, which is already included.
duke@1 81 * Nested class members are not included because their
duke@1 82 * definitions are on separate pages.
duke@1 83 */
duke@1 84 public String[] getMetaKeywords(ClassDoc classdoc) {
jjg@74 85 ArrayList<String> results = new ArrayList<String>();
duke@1 86
duke@1 87 // Add field and method keywords only if -keywords option is used
duke@1 88 if( configuration.keywords ) {
duke@1 89 results.addAll(getClassKeyword(classdoc));
duke@1 90 results.addAll(getMemberKeywords(classdoc.fields()));
duke@1 91 results.addAll(getMemberKeywords(classdoc.methods()));
duke@1 92 }
jjg@74 93 return results.toArray(new String[]{});
duke@1 94 }
duke@1 95
duke@1 96 /**
duke@1 97 * Get the current class for a meta tag keyword, as the first
duke@1 98 * and only element of an array list.
duke@1 99 */
jjg@74 100 protected ArrayList<String> getClassKeyword(ClassDoc classdoc) {
duke@1 101 String cltypelower = classdoc.isInterface() ? "interface" : "class";
jjg@74 102 ArrayList<String> metakeywords = new ArrayList<String>(1);
duke@1 103 metakeywords.add(classdoc.qualifiedName() + " " + cltypelower);
duke@1 104 return metakeywords;
duke@1 105 }
duke@1 106
duke@1 107 /**
duke@1 108 * Get the package keywords.
duke@1 109 */
duke@1 110 public String[] getMetaKeywords(PackageDoc packageDoc) {
duke@1 111 if( configuration.keywords ) {
duke@1 112 String pkgName = Util.getPackageName(packageDoc);
duke@1 113 return new String[] { pkgName + " " + "package" };
duke@1 114 } else {
duke@1 115 return new String[] {};
duke@1 116 }
duke@1 117 }
duke@1 118
duke@1 119 /**
duke@1 120 * Get the overview keywords.
duke@1 121 */
duke@1 122 public String[] getOverviewMetaKeywords(String title, String docTitle) {
duke@1 123 if( configuration.keywords ) {
duke@1 124 String windowOverview = configuration.getText(title);
duke@1 125 String[] metakeywords = { windowOverview };
duke@1 126 if (docTitle.length() > 0 ) {
duke@1 127 metakeywords[0] += ", " + docTitle;
duke@1 128 }
duke@1 129 return metakeywords;
duke@1 130 } else {
duke@1 131 return new String[] {};
duke@1 132 }
duke@1 133 }
duke@1 134
duke@1 135 /**
duke@1 136 * Get members for meta tag keywords as an array,
duke@1 137 * where each member name is a string element of the array.
duke@1 138 * The parameter lists are not included in the keywords;
duke@1 139 * therefore all overloaded methods are combined.<br>
duke@1 140 * Example: getValue(Object) is returned in array as getValue()
duke@1 141 *
duke@1 142 * @param memberdocs array of MemberDoc objects to be added to keywords
duke@1 143 */
jjg@74 144 protected ArrayList<String> getMemberKeywords(MemberDoc[] memberdocs) {
jjg@74 145 ArrayList<String> results = new ArrayList<String>();
duke@1 146 String membername;
duke@1 147 for (int i=0; i < memberdocs.length; i++) {
duke@1 148 membername = memberdocs[i].name()
duke@1 149 + (memberdocs[i].isMethod() ? "()" : "");
duke@1 150 if ( ! results.contains(membername) ) {
duke@1 151 results.add(membername);
duke@1 152 }
duke@1 153 }
duke@1 154 return results;
duke@1 155 }
duke@1 156 }

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