--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/formats/html/SingleIndexWriter.java	Sat Nov 28 18:52:17 2015 -0800
@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) 1998, 2015, 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
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.javadoc.internal.doclets.formats.html;
+
+import java.io.*;
+import java.util.*;
+
+import jdk.javadoc.internal.doclets.formats.html.markup.HtmlStyle;
+import jdk.javadoc.internal.doclets.formats.html.markup.HtmlTag;
+import jdk.javadoc.internal.doclets.formats.html.markup.HtmlTree;
+import jdk.javadoc.internal.doclets.formats.html.markup.StringContent;
+import jdk.javadoc.internal.doclets.toolkit.Content;
+import jdk.javadoc.internal.doclets.toolkit.util.DocPath;
+import jdk.javadoc.internal.doclets.toolkit.util.DocPaths;
+import jdk.javadoc.internal.doclets.toolkit.util.DocletAbortException;
+import jdk.javadoc.internal.doclets.toolkit.util.IndexBuilder;
+
+
+/**
+ * Generate only one index file for all the Member Names with Indexing in
+ * Unicode Order. The name of the generated file is "index-all.html" and it is
+ * generated in current or the destination 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>
+ *
+ * @see java.lang.Character
+ * @author Atul M Dambalkar
+ * @author Bhavesh Patel (Modified)
+ */
+public class SingleIndexWriter extends AbstractIndexWriter {
+
+    private Set<Character> elements;
+
+    /**
+     * Construct the SingleIndexWriter with filename "index-all.html" and the
+     * {@link IndexBuilder}
+     *
+     * @param filename     Name of the index file to be generated.
+     * @param indexbuilder Unicode based Index from {@link IndexBuilder}
+     */
+    public SingleIndexWriter(ConfigurationImpl configuration,
+                             DocPath filename,
+                             IndexBuilder indexbuilder) throws IOException {
+        super(configuration, filename, indexbuilder);
+    }
+
+    /**
+     * Generate single index file, for all Unicode characters.
+     *
+     * @param indexbuilder IndexBuilder built by {@link IndexBuilder}
+     * @throws DocletAbortException
+     */
+    public static void generate(ConfigurationImpl configuration,
+                                IndexBuilder indexbuilder) {
+        SingleIndexWriter indexgen;
+        DocPath filename = DocPaths.INDEX_ALL;
+        try {
+            indexgen = new SingleIndexWriter(configuration,
+                                             filename, indexbuilder);
+            indexgen.generateIndexFile();
+            indexgen.close();
+        } catch (IOException exc) {
+            configuration.standardmessage.error(
+                        "doclet.exception_encountered",
+                        exc.toString(), filename);
+            throw new DocletAbortException(exc);
+        }
+    }
+
+    /**
+     * Generate the contents of each index file, with Header, Footer,
+     * Member Field, Method and Constructor Description.
+     */
+    protected void generateIndexFile() throws IOException {
+        String title = configuration.getText("doclet.Window_Single_Index");
+        HtmlTree body = getBody(true, getWindowTitle(title));
+        HtmlTree htmlTree = (configuration.allowTag(HtmlTag.HEADER))
+                ? HtmlTree.HEADER()
+                : body;
+        addTop(htmlTree);
+        addNavLinks(true, htmlTree);
+        if (configuration.allowTag(HtmlTag.HEADER)) {
+            body.addContent(htmlTree);
+        }
+        HtmlTree divTree = new HtmlTree(HtmlTag.DIV);
+        divTree.addStyle(HtmlStyle.contentContainer);
+        elements = new TreeSet<>(indexbuilder.getIndexMap().keySet());
+        elements.addAll(configuration.tagSearchIndexKeys);
+        addLinksForIndexes(divTree);
+        for (Character unicode : elements) {
+            if (configuration.tagSearchIndexMap.get(unicode) == null) {
+                addContents(unicode, indexbuilder.getMemberList(unicode), divTree);
+            } else if (indexbuilder.getMemberList(unicode) == null) {
+                addSearchContents(unicode, configuration.tagSearchIndexMap.get(unicode), divTree);
+            } else {
+                addContents(unicode, indexbuilder.getMemberList(unicode),
+                        configuration.tagSearchIndexMap.get(unicode), divTree);
+            }
+        }
+        addLinksForIndexes(divTree);
+        body.addContent((configuration.allowTag(HtmlTag.MAIN))
+                ? HtmlTree.MAIN(divTree)
+                : divTree);
+        if (configuration.allowTag(HtmlTag.FOOTER)) {
+            htmlTree = HtmlTree.FOOTER();
+        }
+        addNavLinks(false, htmlTree);
+        addBottom(htmlTree);
+        if (configuration.allowTag(HtmlTag.FOOTER)) {
+            body.addContent(htmlTree);
+        }
+        createSearchIndexFiles();
+        printHtmlDocument(null, true, body);
+    }
+
+    /**
+     * Add links for all the Index Files per unicode character.
+     *
+     * @param contentTree the content tree to which the links for indexes will be added
+     */
+    protected void addLinksForIndexes(Content contentTree) {
+        for (Object ch : elements) {
+            String unicode = ch.toString();
+            contentTree.addContent(
+                    getHyperLink(getNameForIndex(unicode),
+                            new StringContent(unicode)));
+            contentTree.addContent(getSpace());
+        }
+    }
+}