--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/util/ElementListWriter.java	Wed Dec 13 12:45:06 2017 -0800
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 1998, 2017, 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.toolkit.util;
+
+import java.io.*;
+
+import javax.lang.model.element.ModuleElement;
+import javax.lang.model.element.PackageElement;
+
+import jdk.javadoc.doclet.DocletEnvironment;
+import jdk.javadoc.internal.doclets.toolkit.BaseConfiguration;
+
+
+/**
+ * Write out the element index.
+ *
+ *  <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 Atul M Dambalkar
+ */
+public class ElementListWriter {
+
+    private final BaseConfiguration configuration;
+    private final Utils utils;
+    private final DocFile file;
+
+    /**
+     * Constructor.
+     *
+     * @param configuration the current configuration of the doclet.
+     */
+    public ElementListWriter(BaseConfiguration configuration) {
+        file = DocFile.createFileForOutput(configuration, DocPaths.ELEMENT_LIST);
+        this.configuration = configuration;
+        this.utils = configuration.utils;
+    }
+
+    /**
+     * Generate the element index.
+     *
+     * @param configuration the current configuration of the doclet.
+     * @throws DocFileIOException if there is a problem writing the output
+     */
+    public static void generate(BaseConfiguration configuration) throws DocFileIOException {
+        ElementListWriter elemgen = new ElementListWriter(configuration);
+        elemgen.generateElementListFile(configuration.docEnv);
+    }
+
+    protected void generateElementListFile(DocletEnvironment docEnv) throws DocFileIOException {
+        try (BufferedWriter out = new BufferedWriter(file.openWriter())) {
+            if (configuration.showModules) {
+                for (ModuleElement mdle : configuration.modulePackages.keySet()) {
+                    if (!(configuration.nodeprecated && utils.isDeprecated(mdle))) {
+                        out.write(DocletConstants.MODULE_PREFIX + mdle.toString());
+                        out.newLine();
+                        for (PackageElement pkg : configuration.modulePackages.get(mdle)) {
+                            out.write(pkg.toString());
+                            out.newLine();
+                        }
+                    }
+                }
+            } else {
+                for (PackageElement pkg : configuration.packages) {
+                    // if the -nodeprecated option is set and the package is marked as
+                    // deprecated, do not include it in the packages list.
+                    if (!(configuration.nodeprecated && utils.isDeprecated(pkg))) {
+                        out.write(pkg.toString());
+                        out.newLine();
+                    }
+                }
+            }
+        } catch (IOException e) {
+            throw new DocFileIOException(file, DocFileIOException.Mode.WRITE, e);
+        }
+    }
+}