Java example source code file (SingleIndexWriter.java)

This example Java source code file (SingleIndexWriter.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

abstractindexwriter, character, content, docletabortexception, docpath, htmltree, indexbuilder, ioexception, singleindexwriter, string, stringcontent

The SingleIndexWriter.java Java example source code

/*
 * Copyright (c) 1998, 2013, 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 com.sun.tools.doclets.formats.html;

import java.io.*;

import com.sun.tools.doclets.formats.html.markup.*;
import com.sun.tools.doclets.internal.toolkit.*;
import com.sun.tools.doclets.internal.toolkit.util.*;

/**
 * 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>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 {

    /**
     * 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");
        Content body = getBody(true, getWindowTitle(title));
        addTop(body);
        addNavLinks(true, body);
        HtmlTree divTree = new HtmlTree(HtmlTag.DIV);
        divTree.addStyle(HtmlStyle.contentContainer);
        addLinksForIndexes(divTree);
        for (int i = 0; i < indexbuilder.elements().length; i++) {
            Character unicode = (Character)((indexbuilder.elements())[i]);
            addContents(unicode, indexbuilder.getMemberList(unicode), divTree);
        }
        addLinksForIndexes(divTree);
        body.addContent(divTree);
        addNavLinks(false, body);
        addBottom(body);
        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 (int i = 0; i < indexbuilder.elements().length; i++) {
            String unicode = (indexbuilder.elements())[i].toString();
            contentTree.addContent(
                    getHyperLink(getNameForIndex(unicode),
                    new StringContent(unicode)));
            contentTree.addContent(getSpace());
        }
    }
}