/*
 * 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.
 
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.
Author:
Atul M Dambalkar/**
 * 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.
Params:
configuration – the configuration
filename – File to be generated./**
     * 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.
Params:
configuration – the configuration
Throws:
DocFileIOException – if there is a problem while generating the documentation/**
     * 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/**
     * Generate the help file contents.
     *
     * @throws DocFileIOException if there is a problem while generating the documentation
     */
    protected void generateHelpFile() throws DocFileIOException {
        String title = configuration.getText("doclet.Window_Help_title");
        HtmlTree body = getBody(true, getWindowTitle(title));
        HtmlTree htmlTree = (configuration.allowTag(HtmlTag.HEADER))
                ? HtmlTree.HEADER()
                : body;
        addTop(htmlTree);
        navBar.setUserHeader(getUserHeaderFooter(true));
        htmlTree.addContent(navBar.getContent(true));
        if (configuration.allowTag(HtmlTag.HEADER)) {
            body.addContent(htmlTree);
        }
        addHelpFileContents(body);
        if (configuration.allowTag(HtmlTag.FOOTER)) {
            htmlTree = HtmlTree.FOOTER();
        }
        navBar.setUserFooter(getUserHeaderFooter(false));
        htmlTree.addContent(navBar.getContent(false));
        addBottom(htmlTree);
        if (configuration.allowTag(HtmlTag.FOOTER)) {
            body.addContent(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.
Params:
contentTree – the content tree to which the help file contents will be added/**
     * 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);
        if (configuration.allowTag(HtmlTag.MAIN)) {
            mainTree.addContent(div);
        } else {
            contentTree.addContent(div);
        }
        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);
            htmlTree = (configuration.allowTag(HtmlTag.SECTION))
                    ? HtmlTree.SECTION(overviewHeading)
                    : HtmlTree.LI(HtmlStyle.blockList, overviewHeading);
            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);
            if (configuration.allowTag(HtmlTag.SECTION)) {
                ul.addContent(HtmlTree.LI(HtmlStyle.blockList, htmlTree));
            } else {
                ul.addContent(htmlTree);
            }
        }

        // Module
        if (configuration.showModules) {
            Content moduleHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,
                    contents.moduleLabel);
            htmlTree = (configuration.allowTag(HtmlTag.SECTION))
                    ? HtmlTree.SECTION(moduleHead)
                    : HtmlTree.LI(HtmlStyle.blockList, moduleHead);
            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);
            if (configuration.allowTag(HtmlTag.SECTION)) {
                ul.addContent(HtmlTree.LI(HtmlStyle.blockList, htmlTree));
            } else {
                ul.addContent(htmlTree);
            }

        }

        // Package
        Content packageHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,
                contents.packageLabel);
        htmlTree = (configuration.allowTag(HtmlTag.SECTION))
                ? HtmlTree.SECTION(packageHead)
                : HtmlTree.LI(HtmlStyle.blockList, packageHead);
        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);
        if (configuration.allowTag(HtmlTag.SECTION)) {
            ul.addContent(HtmlTree.LI(HtmlStyle.blockList, htmlTree));
        } else {
            ul.addContent(htmlTree);
        }

        // Class/interface
        Content classHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,
                contents.getContent("doclet.help.class_interface.head"));
        htmlTree = (configuration.allowTag(HtmlTag.SECTION))
                ? HtmlTree.SECTION(classHead)
                : HtmlTree.LI(HtmlStyle.blockList, classHead);
        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);
        if (configuration.allowTag(HtmlTag.SECTION)) {
            ul.addContent(HtmlTree.LI(HtmlStyle.blockList, htmlTree));
        } else {
            ul.addContent(htmlTree);
        }

        // Annotation Types
        Content aHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,
                contents.annotationType);
        htmlTree = (configuration.allowTag(HtmlTag.SECTION))
                ? HtmlTree.SECTION(aHead)
                : HtmlTree.LI(HtmlStyle.blockList, aHead);
        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);
        if (configuration.allowTag(HtmlTag.SECTION)) {
            ul.addContent(HtmlTree.LI(HtmlStyle.blockList, htmlTree));
        } else {
            ul.addContent(htmlTree);
        }

        // Enums
        Content enumHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING, contents.enum_);
        htmlTree = (configuration.allowTag(HtmlTag.SECTION))
                ? HtmlTree.SECTION(enumHead)
                : HtmlTree.LI(HtmlStyle.blockList, enumHead);
        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);
        if (configuration.allowTag(HtmlTag.SECTION)) {
            ul.addContent(HtmlTree.LI(HtmlStyle.blockList, htmlTree));
        } else {
            ul.addContent(htmlTree);
        }

        // Class Use
        if (configuration.classuse) {
            Content useHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,
                    contents.getContent("doclet.help.use.head"));
            htmlTree = (configuration.allowTag(HtmlTag.SECTION))
                    ? HtmlTree.SECTION(useHead)
                    : HtmlTree.LI(HtmlStyle.blockList, useHead);
            Content useBody = contents.getContent("doclet.help.use.body");
            Content usePara = HtmlTree.P(useBody);
            htmlTree.addContent(usePara);
            if (configuration.allowTag(HtmlTag.SECTION)) {
                ul.addContent(HtmlTree.LI(HtmlStyle.blockList, htmlTree));
            } else {
                ul.addContent(htmlTree);
            }
        }

        // Tree
        if (configuration.createtree) {
            Content treeHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,
                    contents.getContent("doclet.help.tree.head"));
            htmlTree = (configuration.allowTag(HtmlTag.SECTION))
                    ? HtmlTree.SECTION(treeHead)
                    : HtmlTree.LI(HtmlStyle.blockList, treeHead);
            Content treeIntro = contents.getContent("doclet.help.tree.intro",
                    links.createLink(DocPaths.OVERVIEW_TREE,
                    configuration.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);
            if (configuration.allowTag(HtmlTag.SECTION)) {
                ul.addContent(HtmlTree.LI(HtmlStyle.blockList, htmlTree));
            } else {
                ul.addContent(htmlTree);
            }
        }

        // Deprecated
        if (!(configuration.nodeprecatedlist || configuration.nodeprecated)) {
            Content dHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,
                    contents.deprecatedAPI);
            htmlTree = (configuration.allowTag(HtmlTag.SECTION))
                    ? HtmlTree.SECTION(dHead)
                    : HtmlTree.LI(HtmlStyle.blockList, dHead);
            Content deprBody = contents.getContent("doclet.help.deprecated.body",
                    links.createLink(DocPaths.DEPRECATED_LIST,
                    configuration.getText("doclet.Deprecated_API")));
            Content dPara = HtmlTree.P(deprBody);
            htmlTree.addContent(dPara);
            if (configuration.allowTag(HtmlTag.SECTION)) {
                ul.addContent(HtmlTree.LI(HtmlStyle.blockList, htmlTree));
            } else {
                ul.addContent(htmlTree);
            }
        }

        // Index
        if (configuration.createindex) {
            Content indexlink;
            if (configuration.splitindex) {
                indexlink = links.createLink(DocPaths.INDEX_FILES.resolve(DocPaths.indexN(1)),
                        configuration.getText("doclet.Index"));
            } else {
                indexlink = links.createLink(DocPaths.INDEX_ALL,
                        configuration.getText("doclet.Index"));
            }
            Content indexHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,
                    contents.getContent("doclet.help.index.head"));
            htmlTree = (configuration.allowTag(HtmlTag.SECTION))
                    ? HtmlTree.SECTION(indexHead)
                    : HtmlTree.LI(HtmlStyle.blockList, indexHead);
            Content indexBody = contents.getContent("doclet.help.index.body", indexlink);
            Content indexPara = HtmlTree.P(indexBody);
            htmlTree.addContent(indexPara);
            if (configuration.allowTag(HtmlTag.SECTION)) {
                ul.addContent(HtmlTree.LI(HtmlStyle.blockList, htmlTree));
            } else {
                ul.addContent(htmlTree);
            }
        }

        // Frames
        if (configuration.frames) {
            Content frameHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,
                    contents.getContent("doclet.help.frames.head"));
            htmlTree = (configuration.allowTag(HtmlTag.SECTION))
                    ? HtmlTree.SECTION(frameHead)
                    : HtmlTree.LI(HtmlStyle.blockList, frameHead);
            Content framesBody = contents.getContent("doclet.help.frames.body");
            Content framePara = HtmlTree.P(framesBody);
            htmlTree.addContent(framePara);

            if (configuration.allowTag(HtmlTag.SECTION)) {
                ul.addContent(HtmlTree.LI(HtmlStyle.blockList, htmlTree));
            } else {
                ul.addContent(htmlTree);
            }
        }

        // All Classes
        Content allclassesHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,
                contents.allClassesLabel);
        htmlTree = (configuration.allowTag(HtmlTag.SECTION))
                ? HtmlTree.SECTION(allclassesHead)
                : HtmlTree.LI(HtmlStyle.blockList, allclassesHead);
        Content allClassesBody = contents.getContent("doclet.help.all_classes.body",
                links.createLink(DocPaths.AllClasses(configuration.frames),
                resources.getText("doclet.All_Classes")));
        Content allclassesPara = HtmlTree.P(allClassesBody);
        htmlTree.addContent(allclassesPara);
        if (configuration.allowTag(HtmlTag.SECTION)) {
            ul.addContent(HtmlTree.LI(HtmlStyle.blockList, htmlTree));
        } else {
            ul.addContent(htmlTree);
        }

        // Serialized Form
        Content sHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,
                contents.serializedForm);
        htmlTree = (configuration.allowTag(HtmlTag.SECTION))
                ? HtmlTree.SECTION(sHead)
                : HtmlTree.LI(HtmlStyle.blockList, sHead);
        Content serialBody = contents.getContent("doclet.help.serial_form.body");
        Content serialPara = HtmlTree.P(serialBody);
        htmlTree.addContent(serialPara);
        if (configuration.allowTag(HtmlTag.SECTION)) {
            ul.addContent(HtmlTree.LI(HtmlStyle.blockList, htmlTree));
        } else {
            ul.addContent(htmlTree);
        }

        // Constant Field Values
        Content constHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,
                contents.constantsSummaryTitle);
        htmlTree = (configuration.allowTag(HtmlTag.SECTION))
                ? HtmlTree.SECTION(constHead)
                : HtmlTree.LI(HtmlStyle.blockList, constHead);
        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);
        if (configuration.allowTag(HtmlTag.SECTION)) {
            ul.addContent(HtmlTree.LI(HtmlStyle.blockList, htmlTree));
        } else {
            ul.addContent(htmlTree);
        }

        // Search
        Content searchHead = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,
                contents.getContent("doclet.help.search.head"));
        htmlTree = (configuration.allowTag(HtmlTag.SECTION))
                ? HtmlTree.SECTION(searchHead)
                : HtmlTree.LI(HtmlStyle.blockList, searchHead);
        Content searchBody = contents.getContent("doclet.help.search.body");
        Content searchPara = HtmlTree.P(searchBody);
        htmlTree.addContent(searchPara);
        if (configuration.allowTag(HtmlTag.SECTION)) {
            ul.addContent(HtmlTree.LI(HtmlStyle.blockList, htmlTree));
        } else {
            ul.addContent(htmlTree);
        }

        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);
        if (configuration.allowTag(HtmlTag.MAIN)) {
            mainTree.addContent(divContent);
            contentTree.addContent(mainTree);
        } else {
            contentTree.addContent(divContent);
        }
    }
}