/*

 * Copyright (c) 1998, 2018, 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 jdk.javadoc.internal.doclets.formats.html.markup.HtmlConstants;

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.Navigation;

import jdk.javadoc.internal.doclets.formats.html.markup.Navigation.PageMode;

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;

/**

 * Generate the Help File for the generated API documentation. The help file

 * contents are helpful for browsing the generated documentation.

 *

 *  <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 HelpWriter extends HtmlDocletWriter {

    HtmlTree mainTree = HtmlTree.MAIN();

    private final Navigation navBar;

    /**

     * Constructor to construct HelpWriter object.

     * @param configuration the configuration

     * @param filename File to be generated.

     */

    public HelpWriter(HtmlConfiguration configuration,

                      DocPath filename) {

        super(configuration, filename);

        this.navBar = new Navigation(null, configuration, fixedNavDiv, PageMode.HELP, path);

    }

    /**

     * Construct the HelpWriter object and then use it to generate the help

     * file. The name of the generated file is "help-doc.html". The help file

     * will get generated if and only if "-helpfile" and "-nohelp" is not used

     * on the command line.

     *

     * @param configuration the configuration

     * @throws DocFileIOException if there is a problem while generating the documentation

     */

    public static void generate(HtmlConfiguration configuration) throws DocFileIOException {

        DocPath filename = DocPaths.HELP_DOC;

        HelpWriter helpgen = new HelpWriter(configuration, filename);

        helpgen.generateHelpFile();

    }

    /**

     * Generate the help file contents.

     *

     * @throws DocFileIOException if there is a problem while generating the documentation

     */

    protected void generateHelpFile() throws DocFileIOException {

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

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

        addTop(htmlTree);

        navBar.setUserHeader(getUserHeaderFooter(true));

        htmlTree.addContent(navBar.getContent(true));

        addHelpFileContents(body);

        navBar.setUserFooter(getUserHeaderFooter(false));

        htmlTree.addContent(navBar.getContent(false));

        addBottom(htmlTree);

        printHtmlDocument(null, true, body);

    }

    /**

     * Add the help file contents from the resource file to the content tree. While adding the

     * help file contents it also keeps track of user options. If "-notree"

     * is used, then the "overview-tree.html" will not get added and hence

     * help information also will not get added.

     *

     * @param contentTree the content tree to which the help file contents will be added

     */

    protected void addHelpFileContents(Content contentTree) {

        // Heading

        Content heading = HtmlTree.HEADING(HtmlConstants.TITLE_HEADING, false, HtmlStyle.title,

                contents.getContent("doclet.help.main_heading"));

        Content div = HtmlTree.DIV(HtmlStyle.header, heading);

        Content intro = HtmlTree.DIV(HtmlStyle.subTitle,

                contents.getContent("doclet.help.intro"));

        div.addContent(intro);

        HtmlTree htmlTree;

        HtmlTree ul = new HtmlTree(HtmlTag.UL);

        ul.setStyle(HtmlStyle.blockList);

        // Overview

        if (configuration.createoverview) {

            Content overviewHeading = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,

                contents.overviewLabel);

            String overviewKey = configuration.showModules

                    ? "doclet.help.overview.modules.body"

                    : "doclet.help.overview.packages.body";

            Content overviewLink = links.createLink(

                    DocPaths.overviewSummary(configuration.frames),

                    resources.getText("doclet.Overview"));

            Content overviewBody = contents.getContent(overviewKey, overviewLink);

            Content overviewPara = HtmlTree.P(overviewBody);

            htmlTree.addContent(overviewPara);

        }

        // Module

        if (configuration.showModules) {

            Content moduleHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,

                    contents.moduleLabel);

            Content moduleIntro = contents.getContent("doclet.help.module.intro");

            Content modulePara = HtmlTree.P(moduleIntro);

            htmlTree.addContent(modulePara);

            HtmlTree ulModule = new HtmlTree(HtmlTag.UL);

            ulModule.addContent(HtmlTree.LI(contents.packagesLabel));

            ulModule.addContent(HtmlTree.LI(contents.modulesLabel));

            ulModule.addContent(HtmlTree.LI(contents.servicesLabel));

            htmlTree.addContent(ulModule);

        }

        // Package

        Content packageHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,

                contents.packageLabel);

        Content packageIntro = contents.getContent("doclet.help.package.intro");

        Content packagePara = HtmlTree.P(packageIntro);

        htmlTree.addContent(packagePara);

        HtmlTree ulPackage = new HtmlTree(HtmlTag.UL);

        ulPackage.addContent(HtmlTree.LI(contents.interfaces));

        ulPackage.addContent(HtmlTree.LI(contents.classes));

        ulPackage.addContent(HtmlTree.LI(contents.enums));

        ulPackage.addContent(HtmlTree.LI(contents.exceptions));

        ulPackage.addContent(HtmlTree.LI(contents.errors));

        ulPackage.addContent(HtmlTree.LI(contents.annotationTypes));

        htmlTree.addContent(ulPackage);

        // Class/interface

        Content classHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,

                contents.getContent("doclet.help.class_interface.head"));

        Content classIntro = contents.getContent("doclet.help.class_interface.intro");

        Content classPara = HtmlTree.P(classIntro);

        htmlTree.addContent(classPara);

        HtmlTree ul1 = new HtmlTree(HtmlTag.UL);

        ul1.addContent(HtmlTree.LI(contents.getContent("doclet.help.class_interface.inheritance_diagram")));

        ul1.addContent(HtmlTree.LI(contents.getContent("doclet.help.class_interface.subclasses")));

        ul1.addContent(HtmlTree.LI(contents.getContent("doclet.help.class_interface.subinterfaces")));

        ul1.addContent(HtmlTree.LI(contents.getContent("doclet.help.class_interface.implementations")));

        ul1.addContent(HtmlTree.LI(contents.getContent("doclet.help.class_interface.declaration")));

        ul1.addContent(HtmlTree.LI(contents.getContent("doclet.help.class_interface.description")));

        htmlTree.addContent(ul1);

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

        HtmlTree ul2 = new HtmlTree(HtmlTag.UL);

        ul2.addContent(HtmlTree.LI(contents.nestedClassSummary));

        ul2.addContent(HtmlTree.LI(contents.fieldSummaryLabel));

        ul2.addContent(HtmlTree.LI(contents.propertySummaryLabel));

        ul2.addContent(HtmlTree.LI(contents.constructorSummaryLabel));

        ul2.addContent(HtmlTree.LI(contents.methodSummary));

        htmlTree.addContent(ul2);

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

        HtmlTree ul3 = new HtmlTree(HtmlTag.UL);

        ul3.addContent(HtmlTree.LI(contents.fieldDetailsLabel));

        ul3.addContent(HtmlTree.LI(contents.propertyDetailsLabel));

        ul3.addContent(HtmlTree.LI(contents.constructorDetailsLabel));

        ul3.addContent(HtmlTree.LI(contents.methodDetailLabel));

        htmlTree.addContent(ul3);

        Content classSummary = contents.getContent("doclet.help.class_interface.summary");

        Content para = HtmlTree.P(classSummary);

        htmlTree.addContent(para);

        // Annotation Types

        Content aHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,

                contents.annotationType);

        Content aIntro = contents.getContent("doclet.help.annotation_type.intro");

        Content aPara = HtmlTree.P(aIntro);

        htmlTree.addContent(aPara);

        HtmlTree aul = new HtmlTree(HtmlTag.UL);

        aul.addContent(HtmlTree.LI(contents.getContent("doclet.help.annotation_type.declaration")));

        aul.addContent(HtmlTree.LI(contents.getContent("doclet.help.annotation_type.description")));

        aul.addContent(HtmlTree.LI(contents.annotateTypeRequiredMemberSummaryLabel));

        aul.addContent(HtmlTree.LI(contents.annotateTypeOptionalMemberSummaryLabel));

        aul.addContent(HtmlTree.LI(contents.annotationTypeMemberDetail));

        htmlTree.addContent(aul);

        // Enums

        Content enumHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING, contents.enum_);

        Content eIntro = contents.getContent("doclet.help.enum.intro");

        Content enumPara = HtmlTree.P(eIntro);

        htmlTree.addContent(enumPara);

        HtmlTree eul = new HtmlTree(HtmlTag.UL);

        eul.addContent(HtmlTree.LI(contents.getContent("doclet.help.enum.declaration")));

        eul.addContent(HtmlTree.LI(contents.getContent("doclet.help.enum.definition")));

        eul.addContent(HtmlTree.LI(contents.enumConstantSummary));

        eul.addContent(HtmlTree.LI(contents.enumConstantDetailLabel));

        htmlTree.addContent(eul);

        // Class Use

        if (configuration.classuse) {

            Content useHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,

                    contents.getContent("doclet.help.use.head"));

            Content useBody = contents.getContent("doclet.help.use.body");

            Content usePara = HtmlTree.P(useBody);

            htmlTree.addContent(usePara);

        }

        // Tree

        if (configuration.createtree) {

            Content treeHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,

                    contents.getContent("doclet.help.tree.head"));

            Content treeIntro = contents.getContent("doclet.help.tree.intro",

                    links.createLink(DocPaths.OVERVIEW_TREE,

                    resources.getText("doclet.Class_Hierarchy")),

                    HtmlTree.CODE(new StringContent("java.lang.Object")));

            Content treePara = HtmlTree.P(treeIntro);

            htmlTree.addContent(treePara);

            HtmlTree tul = new HtmlTree(HtmlTag.UL);

            tul.addContent(HtmlTree.LI(contents.getContent("doclet.help.tree.overview")));

            tul.addContent(HtmlTree.LI(contents.getContent("doclet.help.tree.package")));

            htmlTree.addContent(tul);

        }

        // Deprecated

        if (!(configuration.nodeprecatedlist || configuration.nodeprecated)) {

            Content dHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,

                    contents.deprecatedAPI);

            Content deprBody = contents.getContent("doclet.help.deprecated.body",

                    links.createLink(DocPaths.DEPRECATED_LIST,

                    resources.getText("doclet.Deprecated_API")));

            Content dPara = HtmlTree.P(deprBody);

            htmlTree.addContent(dPara);

        }

        // Index

        if (configuration.createindex) {

            Content indexlink;

            if (configuration.splitindex) {

                indexlink = links.createLink(DocPaths.INDEX_FILES.resolve(DocPaths.indexN(1)),

                        resources.getText("doclet.Index"));

            } else {

                indexlink = links.createLink(DocPaths.INDEX_ALL,

                        resources.getText("doclet.Index"));

            }

            Content indexHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,

                    contents.getContent("doclet.help.index.head"));

            Content indexBody = contents.getContent("doclet.help.index.body", indexlink);

            Content indexPara = HtmlTree.P(indexBody);

            htmlTree.addContent(indexPara);

        }

        // Frames

        if (configuration.frames) {

            Content frameHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,

                    contents.getContent("doclet.help.frames.head"));

            Content framesBody = contents.getContent("doclet.help.frames.body");

            Content framePara = HtmlTree.P(framesBody);

            htmlTree.addContent(framePara);

        }

        // Serialized Form

        Content sHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,

                contents.serializedForm);

        Content serialBody = contents.getContent("doclet.help.serial_form.body");

        Content serialPara = HtmlTree.P(serialBody);

        htmlTree.addContent(serialPara);

        // Constant Field Values

        Content constHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,

                contents.constantsSummaryTitle);

        Content constantsBody = contents.getContent("doclet.help.constants.body",

                links.createLink(DocPaths.CONSTANT_VALUES,

                resources.getText("doclet.Constants_Summary")));

        Content constPara = HtmlTree.P(constantsBody);

        htmlTree.addContent(constPara);

        // Search

        Content searchHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,

                contents.getContent("doclet.help.search.head"));

        Content searchBody = contents.getContent("doclet.help.search.body");

        Content searchPara = HtmlTree.P(searchBody);

        htmlTree.addContent(searchPara);

        Content divContent = HtmlTree.DIV(HtmlStyle.contentContainer, ul);

        divContent.addContent(new HtmlTree(HtmlTag.HR));

        Content footnote = HtmlTree.SPAN(HtmlStyle.emphasizedPhrase,

                contents.getContent("doclet.help.footnote"));

        divContent.addContent(footnote);

    }

}