/*

 * Copyright (c) 1998, 2019, 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

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 */

package jdk.javadoc.internal.doclets.formats.html;

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.DocFileIOException;

import jdk.javadoc.internal.doclets.toolkit.util.DocPath;

import jdk.javadoc.internal.doclets.toolkit.util.DocPaths;

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 configuration the configuration for this doclet

     * @param filename     Name of the index file to be generated.

     * @param indexbuilder Unicode based Index from {@link IndexBuilder}

     */

    public SingleIndexWriter(HtmlConfiguration configuration,

                             DocPath filename,

                             IndexBuilder indexbuilder) {

        super(configuration, filename, indexbuilder);

    }

    /**

     * Generate single index file, for all Unicode characters.

     *

     * @param configuration the configuration for this doclet

     * @param indexbuilder IndexBuilder built by {@link IndexBuilder}

     * @throws DocFileIOException if there is a problem generating the index

     */

    public static void generate(HtmlConfiguration configuration,

                                IndexBuilder indexbuilder) throws DocFileIOException {

        DocPath filename = DocPaths.INDEX_ALL;

        SingleIndexWriter indexgen = new SingleIndexWriter(configuration,

                                         filename, indexbuilder);

        indexgen.generateIndexFile();

    }

    /**

     * Generate the contents of each index file, with Header, Footer,

     * Member Field, Method and Constructor Description.

     * @throws DocFileIOException if there is a problem generating the index

     */

    protected void generateIndexFile() throws DocFileIOException {

        String title = resources.getText("doclet.Window_Single_Index");

        HtmlTree body = getBody(true, getWindowTitle(title));

        navBar.setUserHeader(getUserHeaderFooter(true));

        HtmlTree divTree = new HtmlTree(HtmlTag.DIV);

        divTree.setStyle(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);

        navBar.setUserFooter(getUserHeaderFooter(false));

        createSearchIndexFiles();

        printHtmlDocument(null, "index", 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(

                    links.createLink(getNameForIndex(unicode),

                            new StringContent(unicode)));

            contentTree.addContent(Contents.SPACE);

        }

        contentTree.addContent(new HtmlTree(HtmlTag.BR));

        contentTree.addContent(links.createLink(DocPaths.ALLCLASSES_INDEX,

                contents.allClassesLabel));

        if (!configuration.packages.isEmpty()) {

            contentTree.addContent(Contents.SPACE);

            contentTree.addContent(links.createLink(DocPaths.ALLPACKAGES_INDEX,

                    contents.allPackagesLabel));

    }

}

}