/*

 * Copyright (c) 1997, 2016, 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.AnnotationMirror;

import javax.lang.model.element.Element;

import javax.lang.model.element.ModuleElement;

import javax.lang.model.element.PackageElement;

import javax.lang.model.element.TypeElement;

import javax.lang.model.type.TypeMirror;

import javax.lang.model.util.SimpleElementVisitor8;

import com.sun.source.doctree.DocTree;

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.ClassWriter;

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

import jdk.javadoc.internal.doclets.toolkit.builders.MemberSummaryBuilder;

import jdk.javadoc.internal.doclets.toolkit.taglets.ParamTaglet;

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

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

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.DocletConstants;

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

import jdk.javadoc.internal.doclets.toolkit.util.VisibleMemberMap.Kind;

/**

 * Generate the Class Information 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>

 *

 * @see javax.lang.model.element.TypeElement

 * @see java.util.Collections

 * @see java.util.List

 * @see java.util.ArrayList

 * @see java.util.HashMap

 *

 * @author Atul M Dambalkar

 * @author Robert Field

 * @author Bhavesh Patel (Modified)

 */

public class ClassWriterImpl extends SubWriterHolderWriter implements ClassWriter {

    protected final TypeElement typeElement;

    protected final ClassTree classtree;

    protected final TypeElement prev;

    protected final TypeElement next;

    /**

     * @param configuration the configuration data for the doclet

     * @param typeElement the class being documented.

     * @param prevClass the previous class that was documented.

     * @param nextClass the next class being documented.

     * @param classTree the class tree for the given class.

     */

    public ClassWriterImpl(ConfigurationImpl configuration, TypeElement typeElement,

            TypeElement prevClass, TypeElement nextClass, ClassTree classTree) {

        super(configuration, DocPath.forClass(configuration.utils, typeElement));

        this.typeElement = typeElement;

        configuration.currentTypeElement = typeElement;

        this.classtree = classTree;

        this.prev = prevClass;

        this.next = nextClass;

    }

    /**

     * Get the module link.

     *

     * @return a content tree for the module link

     */

    @Override

    protected Content getNavLinkModule() {

        Content linkContent = getModuleLink(utils.elementUtils.getModuleOf(typeElement),

                contents.moduleLabel);

        Content li = HtmlTree.LI(linkContent);

        return li;

    }

    /**

     * Get this package link.

     *

     * @return a content tree for the package link

     */

    @Override

    protected Content getNavLinkPackage() {

        Content linkContent = getHyperLink(DocPaths.PACKAGE_SUMMARY,

                contents.packageLabel);

        Content li = HtmlTree.LI(linkContent);

        return li;

    }

    /**

     * Get the class link.

     *

     * @return a content tree for the class link

     */

    @Override

    protected Content getNavLinkClass() {

        Content li = HtmlTree.LI(HtmlStyle.navBarCell1Rev, contents.classLabel);

        return li;

    }

    /**

     * Get the class use link.

     *

     * @return a content tree for the class use link

     */

    @Override

    protected Content getNavLinkClassUse() {

        Content linkContent = getHyperLink(DocPaths.CLASS_USE.resolve(filename), contents.useLabel);

        Content li = HtmlTree.LI(linkContent);

        return li;

    }

    /**

     * Get link to previous class.

     *

     * @return a content tree for the previous class link

     */

    @Override

    public Content getNavLinkPrevious() {

        Content li;

        if (prev != null) {

            Content prevLink = getLink(new LinkInfoImpl(configuration,

                    LinkInfoImpl.Kind.CLASS, prev)

                    .label(contents.prevClassLabel).strong(true));

            li = HtmlTree.LI(prevLink);

        }

        else

            li = HtmlTree.LI(contents.prevClassLabel);

        return li;

    }

    /**

     * Get link to next class.

     *

     * @return a content tree for the next class link

     */

    @Override

    public Content getNavLinkNext() {

        Content li;

        if (next != null) {

            Content nextLink = getLink(new LinkInfoImpl(configuration,

                    LinkInfoImpl.Kind.CLASS, next)

                    .label(contents.nextClassLabel).strong(true));

            li = HtmlTree.LI(nextLink);

        }

        else

            li = HtmlTree.LI(contents.nextClassLabel);

        return li;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public Content getHeader(String header) {

        HtmlTree bodyTree = getBody(true, getWindowTitle(utils.getSimpleName(typeElement)));

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

                ? HtmlTree.HEADER()

                : bodyTree;

        addTop(htmlTree);

        addNavLinks(true, htmlTree);

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

            bodyTree.addContent(htmlTree);

        }

        bodyTree.addContent(HtmlConstants.START_OF_CLASS_DATA);

        HtmlTree div = new HtmlTree(HtmlTag.DIV);

        div.addStyle(HtmlStyle.header);

        ModuleElement mdle = configuration.docEnv.getElementUtils().getModuleOf(typeElement);

        if (configuration.showModules) {

            Content classModuleLabel = HtmlTree.SPAN(HtmlStyle.moduleLabelInClass, contents.moduleLabel);

            Content moduleNameDiv = HtmlTree.DIV(HtmlStyle.subTitle, classModuleLabel);

            moduleNameDiv.addContent(Contents.SPACE);

            moduleNameDiv.addContent(getModuleLink(mdle,

                    new StringContent(mdle.getQualifiedName().toString())));

            div.addContent(moduleNameDiv);

        }

        PackageElement pkg = utils.containingPackage(typeElement);

        if (!pkg.isUnnamed()) {

            Content classPackageLabel = HtmlTree.SPAN(HtmlStyle.packageLabelInClass, contents.packageLabel);

            Content pkgNameDiv = HtmlTree.DIV(HtmlStyle.subTitle, classPackageLabel);

            pkgNameDiv.addContent(Contents.SPACE);

            Content pkgNameContent = getPackageLink(pkg,

                    new StringContent(utils.getPackageName(pkg)));

            pkgNameDiv.addContent(pkgNameContent);

            div.addContent(pkgNameDiv);

        }

        LinkInfoImpl linkInfo = new LinkInfoImpl(configuration,

                LinkInfoImpl.Kind.CLASS_HEADER, typeElement);

        //Let's not link to ourselves in the header.

        linkInfo.linkToSelf = false;

        Content headerContent = new StringContent(header);

        Content heading = HtmlTree.HEADING(HtmlConstants.CLASS_PAGE_HEADING, true,

                HtmlStyle.title, headerContent);

        heading.addContent(getTypeParameterLinks(linkInfo));

        div.addContent(heading);

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

            mainTree.addContent(div);

        } else {

            bodyTree.addContent(div);

        }

        return bodyTree;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public Content getClassContentHeader() {

        return getContentHeader();

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void addFooter(Content contentTree) {

        contentTree.addContent(HtmlConstants.END_OF_CLASS_DATA);

        Content htmlTree = (configuration.allowTag(HtmlTag.FOOTER))

                ? HtmlTree.FOOTER()

                : contentTree;

        addNavLinks(false, htmlTree);

        addBottom(htmlTree);

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

            contentTree.addContent(htmlTree);

        }

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void printDocument(Content contentTree) throws DocFileIOException {

        printHtmlDocument(configuration.metakeywords.getMetaKeywords(typeElement),

                true, contentTree);

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public Content getClassInfoTreeHeader() {

        return getMemberTreeHeader();

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public Content getClassInfo(Content classInfoTree) {

        return getMemberTree(HtmlStyle.description, classInfoTree);

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void addClassSignature(String modifiers, Content classInfoTree) {

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

        Content pre = new HtmlTree(HtmlTag.PRE);

        addAnnotationInfo(typeElement, pre);

        pre.addContent(modifiers);

        LinkInfoImpl linkInfo = new LinkInfoImpl(configuration,

                LinkInfoImpl.Kind.CLASS_SIGNATURE, typeElement);

        //Let's not link to ourselves in the signature.

        linkInfo.linkToSelf = false;

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

        Content parameterLinks = getTypeParameterLinks(linkInfo);

        if (configuration.linksource) {

            addSrcLink(typeElement, className, pre);

            pre.addContent(parameterLinks);

        } else {

            Content span = HtmlTree.SPAN(HtmlStyle.typeNameLabel, className);

            span.addContent(parameterLinks);

            pre.addContent(span);

        }

        if (!utils.isInterface(typeElement)) {

            TypeMirror superclass = utils.getFirstVisibleSuperClass(typeElement);

            if (superclass != null) {

                pre.addContent(DocletConstants.NL);

                pre.addContent("extends ");

                Content link = getLink(new LinkInfoImpl(configuration,

                        LinkInfoImpl.Kind.CLASS_SIGNATURE_PARENT_NAME,

                        superclass));

                pre.addContent(link);

            }

        }

        List<? extends TypeMirror> interfaces = typeElement.getInterfaces();

        if (!interfaces.isEmpty()) {

            boolean isFirst = true;

            for (TypeMirror type : interfaces) {

                TypeElement tDoc = utils.asTypeElement(type);

                if (!(utils.isPublic(tDoc) || utils.isLinkable(tDoc))) {

                    continue;

                }

                if (isFirst) {

                    pre.addContent(DocletConstants.NL);

                    pre.addContent(utils.isInterface(typeElement) ? "extends " : "implements ");

                    isFirst = false;

                } else {

                    pre.addContent(", ");

                }

                Content link = getLink(new LinkInfoImpl(configuration,

                                                        LinkInfoImpl.Kind.CLASS_SIGNATURE_PARENT_NAME,

                                                        type));

                pre.addContent(link);

            }

        }

        classInfoTree.addContent(pre);

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void addClassDescription(Content classInfoTree) {

        if(!configuration.nocomment) {

            // generate documentation for the class.

            if (!utils.getBody(typeElement).isEmpty()) {

                addInlineComment(typeElement, classInfoTree);

            }

        }

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void addClassTagInfo(Content classInfoTree) {

        if(!configuration.nocomment) {

            // Print Information about all the tags here

            addTagsInfo(typeElement, classInfoTree);

        }

    }

    /**

     * Get the class hierarchy tree for the given class.

     *

     * @param type the class to print the hierarchy for

     * @return a content tree for class inheritence

     */

    private Content getClassInheritenceTree(TypeMirror type) {

        TypeMirror sup;

        HtmlTree classTreeUl = new HtmlTree(HtmlTag.UL);

        classTreeUl.addStyle(HtmlStyle.inheritance);

        Content liTree = null;

        do {

            sup = utils.getFirstVisibleSuperClass(type);

            if (sup != null) {

                HtmlTree ul = new HtmlTree(HtmlTag.UL);

                ul.addStyle(HtmlStyle.inheritance);

                ul.addContent(getTreeForClassHelper(type));

                if (liTree != null)

                    ul.addContent(liTree);

                Content li = HtmlTree.LI(ul);

                liTree = li;

                type = sup;

            } else

                classTreeUl.addContent(getTreeForClassHelper(type));

        } while (sup != null);

        if (liTree != null)

            classTreeUl.addContent(liTree);

        return classTreeUl;

    }

    /**

     * Get the class helper tree for the given class.

     *

     * @param type the class to print the helper for

     * @return a content tree for class helper

     */

    private Content getTreeForClassHelper(TypeMirror type) {

        Content li = new HtmlTree(HtmlTag.LI);

        if (type.equals(typeElement.asType())) {

            Content typeParameters = getTypeParameterLinks(

                    new LinkInfoImpl(configuration, LinkInfoImpl.Kind.TREE,

                    typeElement));

            if (configuration.shouldExcludeQualifier(utils.containingPackage(typeElement).toString())) {

                li.addContent(utils.asTypeElement(type).getSimpleName());

                li.addContent(typeParameters);

            } else {

                li.addContent(utils.asTypeElement(type).getQualifiedName());

                li.addContent(typeParameters);

            }

        } else {

            Content link = getLink(new LinkInfoImpl(configuration,

                    LinkInfoImpl.Kind.CLASS_TREE_PARENT, type)

                    .label(configuration.getClassName(utils.asTypeElement(type))));

            li.addContent(link);

        }

        return li;

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void addClassTree(Content classContentTree) {

        if (!utils.isClass(typeElement)) {

            return;

        }

        classContentTree.addContent(getClassInheritenceTree(typeElement.asType()));

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void addTypeParamInfo(Content classInfoTree) {

        if (!utils.getTypeParamTrees(typeElement).isEmpty()) {

            Content typeParam = (new ParamTaglet()).getTagletOutput(typeElement,

                    getTagletWriterInstance(false));

            Content dl = HtmlTree.DL(typeParam);

            classInfoTree.addContent(dl);

        }

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void addSubClassInfo(Content classInfoTree) {

        if (utils.isClass(typeElement)) {

            if (typeElement.getQualifiedName().toString().equals("java.lang.Object") ||

                    typeElement.getQualifiedName().toString().equals("org.omg.CORBA.Object")) {

                return;    // Don't generate the list, too huge

            }

            Set<TypeElement> subclasses = classtree.directSubClasses(typeElement, false);

            if (!subclasses.isEmpty()) {

                Content label = contents.subclassesLabel;

                Content dt = HtmlTree.DT(label);

                Content dl = HtmlTree.DL(dt);

                dl.addContent(getClassLinks(LinkInfoImpl.Kind.SUBCLASSES,

                        subclasses));

                classInfoTree.addContent(dl);

            }

        }

    }

    /**

     * {@inheritDoc}

     */

    @Override

    public void addSubInterfacesInfo(Content classInfoTree) {

        if (utils.isInterface(typeElement)) {

            Set<TypeElement> subInterfaces = classtree.allSubClasses(typeElement, false);

            if (!subInterfaces.isEmpty()) {

                Content label = contents.subinterfacesLabel;

                Content dt = HtmlTree.DT(label);

                Content dl = HtmlTree.DL(dt);