/*

 * Copyright (c) 2016, 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.formats.html;

import java.util.*;

import javax.lang.model.element.ModuleElement;

import javax.lang.model.element.PackageElement;

import javax.lang.model.element.TypeElement;

import javax.lang.model.util.ElementFilter;

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.StringContent;

import jdk.javadoc.internal.doclets.toolkit.Content;

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

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

/**

 * Class to generate file for each module contents in the left-hand bottom

 * frame. This will list all the Class Kinds in the module. A click on any

 * class-kind will update the right-hand frame with the clicked class-kind page.

 *

 *  <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 Bhavesh Patel

 */

public class ModuleFrameWriter extends HtmlDocletWriter {

    /**

     * The module being documented.

     */

    private final ModuleElement mdle;

    /**

     * The classes to be documented.  Use this to filter out classes

     * that will not be documented.

     */

    private SortedSet<TypeElement> documentedClasses;

    /**

     * Constructor to construct ModuleFrameWriter object and to generate

     * "module_name-type-frame.html" file. For example for module "java.base" this will generate file

     * "java.base-type-frame.html" file.

     *

     * @param configuration the configuration of the doclet.

     * @param moduleElement moduleElement under consideration.

     */

    public ModuleFrameWriter(HtmlConfiguration configuration, ModuleElement moduleElement) {

        super(configuration, DocPaths.moduleTypeFrame(moduleElement));

        this.mdle = moduleElement;

        if (configuration.getSpecifiedPackageElements().isEmpty()) {

            documentedClasses = new TreeSet<>(utils.makeGeneralPurposeComparator());

            documentedClasses.addAll(configuration.getIncludedTypeElements());

        }

    }

    /**

     * Generate a module type summary page for the left-hand bottom frame.

     *

     * @param configuration the current configuration of the doclet.

     * @param moduleElement The package for which "module_name-type-frame.html" is to be generated.

     * @throws DocFileIOException if there is a problem generating the module summary file

     */

    public static void generate(HtmlConfiguration configuration, ModuleElement moduleElement)

            throws DocFileIOException {

        ModuleFrameWriter mdlgen = new ModuleFrameWriter(configuration, moduleElement);

        String mdlName = moduleElement.getQualifiedName().toString();

        Content mdlLabel = new StringContent(mdlName);

        HtmlTree body = mdlgen.getBody(false, mdlgen.getWindowTitle(mdlName));

        HtmlTree htmlTree = (configuration.allowTag(HtmlTag.MAIN))

                ? HtmlTree.MAIN()

                : body;

        Content heading = HtmlTree.HEADING(HtmlConstants.TITLE_HEADING, HtmlStyle.bar,

                mdlgen.getHyperLink(DocPaths.moduleSummary(moduleElement), mdlLabel, "", "classFrame"));

        htmlTree.addContent(heading);

        HtmlTree div = new HtmlTree(HtmlTag.DIV);

        mdlgen.addClassListing(div);

        htmlTree.addContent(div);

        if (configuration.allowTag(HtmlTag.MAIN)) {

            body.addContent(htmlTree);

        }

        mdlgen.printHtmlDocument(

                configuration.metakeywords.getMetaKeywordsForModule(moduleElement), false, body);

    }

    /**

     * Add class listing for all the classes in this module. Divide class

     * listing as per the class kind and generate separate listing for

     * Classes, Interfaces, Exceptions and Errors.

     *

     * @param contentTree the content tree to which the listing will be added

     */

    protected void addClassListing(HtmlTree contentTree) {

        List<PackageElement> packagesIn = ElementFilter.packagesIn(mdle.getEnclosedElements());

        SortedSet<TypeElement> interfaces = new TreeSet<>(utils.makeGeneralPurposeComparator());

        SortedSet<TypeElement> classes = new TreeSet<>(utils.makeGeneralPurposeComparator());

        SortedSet<TypeElement> enums = new TreeSet<>(utils.makeGeneralPurposeComparator());

        SortedSet<TypeElement> exceptions = new TreeSet<>(utils.makeGeneralPurposeComparator());

        SortedSet<TypeElement> errors = new TreeSet<>(utils.makeGeneralPurposeComparator());

        SortedSet<TypeElement> annotationTypes = new TreeSet<>(utils.makeGeneralPurposeComparator());

        for (PackageElement pkg : packagesIn) {

            if (utils.isIncluded(pkg)) {

                interfaces.addAll(utils.getInterfaces(pkg));

                classes.addAll(utils.getOrdinaryClasses(pkg));

                enums.addAll(utils.getEnums(pkg));

                exceptions.addAll(utils.getExceptions(pkg));

                errors.addAll(utils.getErrors(pkg));

                annotationTypes.addAll(utils.getAnnotationTypes(pkg));

            }

        }

        addClassKindListing(interfaces, contents.interfaces, contentTree);

        addClassKindListing(classes, contents.classes, contentTree);

        addClassKindListing(enums, contents.enums, contentTree);

        addClassKindListing(exceptions, contents.exceptions, contentTree);

        addClassKindListing(errors, contents.errors, contentTree);

        addClassKindListing(annotationTypes, contents.annotationTypes, contentTree);

    }

    /**

     * Add specific class kind listing. Also add label to the listing.

     *

     * @param list Iterable list of TypeElements

     * @param labelContent content tree of the label to be added

     * @param contentTree the content tree to which the class kind listing will be added

     */

    protected void addClassKindListing(Iterable<TypeElement> list, Content labelContent,

            HtmlTree contentTree) {

        SortedSet<TypeElement> tset = utils.filterOutPrivateClasses(list, configuration.javafx);

        if (!tset.isEmpty()) {

            boolean printedHeader = false;

            HtmlTree htmlTree = (configuration.allowTag(HtmlTag.SECTION))

                    ? HtmlTree.SECTION()

                    : contentTree;

            HtmlTree ul = new HtmlTree(HtmlTag.UL);

            ul.setTitle(labelContent);

            for (TypeElement typeElement : tset) {

                if (documentedClasses != null && !documentedClasses.contains(typeElement)) {

                    continue;

                }

                if (!utils.isCoreClass(typeElement) || !configuration.isGeneratedDoc(typeElement)) {

                    continue;

                }

                if (!printedHeader) {

                    Content heading = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING,

                            true, labelContent);

                    htmlTree.addContent(heading);

                    printedHeader = true;

                }

                Content arr_i_name = new StringContent(utils.getSimpleName(typeElement));

                if (utils.isInterface(typeElement)) {

                    arr_i_name = HtmlTree.SPAN(HtmlStyle.interfaceName, arr_i_name);

                }

                Content link = getLink(new LinkInfoImpl(configuration,

                        LinkInfoImpl.Kind.ALL_CLASSES_FRAME, typeElement).label(arr_i_name).target("classFrame"));

                Content li = HtmlTree.LI(link);

                ul.addContent(li);

            }

            htmlTree.addContent(ul);

            if (configuration.allowTag(HtmlTag.SECTION)) {

                contentTree.addContent(htmlTree);

            }

        }

    }

}