/*
 * Copyright (c) 2003, 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
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package jdk.javadoc.internal.doclets.formats.html;

import java.util.List;

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.element.VariableElement;
import javax.lang.model.type.TypeMirror;
import javax.lang.model.util.SimpleElementVisitor9;

import com.sun.source.doctree.DocTree;
import com.sun.source.doctree.IndexTree;
import com.sun.source.doctree.SystemPropertyTree;
import jdk.javadoc.internal.doclets.formats.html.markup.ContentBuilder;
import jdk.javadoc.internal.doclets.formats.html.markup.HtmlStyle;
import jdk.javadoc.internal.doclets.formats.html.markup.HtmlTree;
import jdk.javadoc.internal.doclets.formats.html.markup.RawHtml;
import jdk.javadoc.internal.doclets.formats.html.markup.StringContent;
import jdk.javadoc.internal.doclets.toolkit.BaseConfiguration;
import jdk.javadoc.internal.doclets.toolkit.Content;
import jdk.javadoc.internal.doclets.toolkit.DocletElement;
import jdk.javadoc.internal.doclets.toolkit.Resources;
import jdk.javadoc.internal.doclets.toolkit.builders.SerializedFormBuilder;
import jdk.javadoc.internal.doclets.toolkit.taglets.TagletWriter;
import jdk.javadoc.internal.doclets.toolkit.util.CommentHelper;
import jdk.javadoc.internal.doclets.toolkit.util.DocLink;
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.Utils;

The taglet writer that writes HTML.
 
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:
Jamie Ho, Bhavesh Patel (Modified)/**
 * The taglet writer that writes HTML.
 *
 *  <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 Jamie Ho
 * @author Bhavesh Patel (Modified)
 */

public class TagletWriterImpl extends TagletWriter {

    private final HtmlDocletWriter htmlWriter;
    private final HtmlConfiguration configuration;
    private final Utils utils;
    private final boolean inSummary;
    private final Resources resources;

    public TagletWriterImpl(HtmlDocletWriter htmlWriter, boolean isFirstSentence) {
        this(htmlWriter, isFirstSentence, false);
    }

    public TagletWriterImpl(HtmlDocletWriter htmlWriter, boolean isFirstSentence, boolean inSummary) {
        super(isFirstSentence);
        this.htmlWriter = htmlWriter;
        configuration = htmlWriter.configuration;
        this.utils = configuration.utils;
        this.inSummary = inSummary;
        resources = configuration.getResources();
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public Content getOutputInstance() {
        return new ContentBuilder();
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    protected Content codeTagOutput(Element element, DocTree tag) {
        CommentHelper ch = utils.getCommentHelper(element);
        StringContent content = new StringContent(utils.normalizeNewlines(ch.getText(tag)));
        Content result = HtmlTree.CODE(content);
        return result;
    }

    protected Content indexTagOutput(Element element, DocTree tag) {
        CommentHelper ch = utils.getCommentHelper(element);
        IndexTree itt = (IndexTree)tag;

        String tagText =  ch.getText(itt.getSearchTerm());
        if (tagText.charAt(0) == '"' && tagText.charAt(tagText.length() - 1) == '"') {
            tagText = tagText.substring(1, tagText.length() - 1);
        }
        String desc = ch.getText(itt.getDescription());

        return createAnchorAndSearchIndex(element, tagText,desc);
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public Content getDocRootOutput() {
        String path;
        if (htmlWriter.pathToRoot.isEmpty())
            path = ".";
        else
            path = htmlWriter.pathToRoot.getPath();
        return new StringContent(path);
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public Content deprecatedTagOutput(Element element) {
        ContentBuilder result = new ContentBuilder();
        CommentHelper ch = utils.getCommentHelper(element);
        List<? extends DocTree> deprs = utils.getBlockTags(element, DocTree.Kind.DEPRECATED);
        if (utils.isTypeElement(element)) {
            if (utils.isDeprecated(element)) {
                result.addContent(HtmlTree.SPAN(HtmlStyle.deprecatedLabel,
                        htmlWriter.getDeprecatedPhrase(element)));
                if (!deprs.isEmpty()) {
                    List<? extends DocTree> commentTags = ch.getDescription(configuration, deprs.get(0));
                    if (!commentTags.isEmpty()) {
                        result.addContent(commentTagsToOutput(null, element, commentTags, false));
                    }
                }
            }
        } else {
            if (utils.isDeprecated(element)) {
                result.addContent(HtmlTree.SPAN(HtmlStyle.deprecatedLabel,
                        htmlWriter.getDeprecatedPhrase(element)));
                if (!deprs.isEmpty()) {
                    List<? extends DocTree> bodyTags = ch.getBody(configuration, deprs.get(0));
                    Content body = commentTagsToOutput(null, element, bodyTags, false);
                    if (!body.isEmpty())
                        result.addContent(HtmlTree.DIV(HtmlStyle.deprecationComment, body));
                }
            } else {
                Element ee = utils.getEnclosingTypeElement(element);
                if (utils.isDeprecated(ee)) {
                    result.addContent(HtmlTree.SPAN(HtmlStyle.deprecatedLabel,
                        htmlWriter.getDeprecatedPhrase(ee)));
                }
            }
        }
        return result;
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    protected Content literalTagOutput(Element element, DocTree tag) {
        CommentHelper ch = utils.getCommentHelper(element);
        Content result = new StringContent(utils.normalizeNewlines(ch.getText(tag)));
        return result;
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public Content getParamHeader(String header) {
        HtmlTree result = HtmlTree.DT(HtmlTree.SPAN(HtmlStyle.paramLabel,
                new StringContent(header)));
        return result;
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public Content paramTagOutput(Element element, DocTree paramTag, String paramName) {
        ContentBuilder body = new ContentBuilder();
        CommentHelper ch = utils.getCommentHelper(element);
        body.addContent(HtmlTree.CODE(new RawHtml(paramName)));
        body.addContent(" - ");
        List<? extends DocTree> description = ch.getDescription(configuration, paramTag);
        body.addContent(htmlWriter.commentTagsToContent(paramTag, element, description, false, inSummary));
        HtmlTree result = HtmlTree.DD(body);
        return result;
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public Content propertyTagOutput(Element element, DocTree tag, String prefix) {
        Content body = new ContentBuilder();
        CommentHelper ch = utils.getCommentHelper(element);
        body.addContent(new RawHtml(prefix));
        body.addContent(" ");
        body.addContent(HtmlTree.CODE(new RawHtml(ch.getText(tag))));
        body.addContent(".");
        Content result = HtmlTree.P(body);
        return result;
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public Content returnTagOutput(Element element, DocTree returnTag) {
        ContentBuilder result = new ContentBuilder();
        CommentHelper ch = utils.getCommentHelper(element);
        result.addContent(HtmlTree.DT(HtmlTree.SPAN(HtmlStyle.returnLabel,
                new StringContent(resources.getText("doclet.Returns")))));
        result.addContent(HtmlTree.DD(htmlWriter.commentTagsToContent(
                returnTag, element, ch.getDescription(configuration, returnTag), false, inSummary)));
        return result;
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public Content seeTagOutput(Element holder, List<? extends DocTree> seeTags) {
        ContentBuilder body = new ContentBuilder();
        for (DocTree dt : seeTags) {
            appendSeparatorIfNotEmpty(body);
            body.addContent(htmlWriter.seeTagToContent(holder, dt));
        }
        if (utils.isVariableElement(holder) && ((VariableElement)holder).getConstantValue() != null &&
                htmlWriter instanceof ClassWriterImpl) {
            //Automatically add link to constant values page for constant fields.
            appendSeparatorIfNotEmpty(body);
            DocPath constantsPath =
                    htmlWriter.pathToRoot.resolve(DocPaths.CONSTANT_VALUES);
            String whichConstant =
                    ((ClassWriterImpl) htmlWriter).getTypeElement().getQualifiedName() + "." +
                    utils.getSimpleName(holder);
            DocLink link = constantsPath.fragment(whichConstant);
            body.addContent(htmlWriter.links.createLink(link,
                    new StringContent(resources.getText("doclet.Constants_Summary"))));
        }
        if (utils.isClass(holder) && utils.isSerializable((TypeElement)holder)) {
            //Automatically add link to serialized form page for serializable classes.
            if (SerializedFormBuilder.serialInclude(utils, holder) &&
                      SerializedFormBuilder.serialInclude(utils, utils.containingPackage(holder))) {
                appendSeparatorIfNotEmpty(body);
                DocPath serialPath = htmlWriter.pathToRoot.resolve(DocPaths.SERIALIZED_FORM);
                DocLink link = serialPath.fragment(utils.getFullyQualifiedName(holder));
                body.addContent(htmlWriter.links.createLink(link,
                        new StringContent(resources.getText("doclet.Serialized_Form"))));
            }
        }
        if (body.isEmpty())
            return body;

        ContentBuilder result = new ContentBuilder();
        result.addContent(HtmlTree.DT(HtmlTree.SPAN(HtmlStyle.seeLabel,
                new StringContent(resources.getText("doclet.See_Also")))));
        result.addContent(HtmlTree.DD(body));
        return result;

    }

    private void appendSeparatorIfNotEmpty(ContentBuilder body) {
        if (!body.isEmpty()) {
            body.addContent(", ");
            body.addContent(DocletConstants.NL);
        }
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public Content simpleTagOutput(Element element, List<? extends DocTree> simpleTags, String header) {
        CommentHelper ch = utils.getCommentHelper(element);
        ContentBuilder result = new ContentBuilder();
        result.addContent(HtmlTree.DT(HtmlTree.SPAN(HtmlStyle.simpleTagLabel, new RawHtml(header))));
        ContentBuilder body = new ContentBuilder();
        boolean many = false;
        for (DocTree simpleTag : simpleTags) {
            if (many) {
                body.addContent(", ");
            }
            List<? extends DocTree> bodyTags = ch.getBody(configuration, simpleTag);
            body.addContent(htmlWriter.commentTagsToContent(simpleTag, element, bodyTags, false, inSummary));
            many = true;
        }
        result.addContent(HtmlTree.DD(body));
        return result;
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public Content simpleTagOutput(Element element, DocTree simpleTag, String header) {
        ContentBuilder result = new ContentBuilder();
        result.addContent(HtmlTree.DT(HtmlTree.SPAN(HtmlStyle.simpleTagLabel, new RawHtml(header))));
        CommentHelper ch = utils.getCommentHelper(element);
        List<? extends DocTree> description = ch.getDescription(configuration, simpleTag);
        Content body = htmlWriter.commentTagsToContent(simpleTag, element, description, false, inSummary);
        result.addContent(HtmlTree.DD(body));
        return result;
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    protected Content systemPropertyTagOutput(Element element, DocTree tag) {
        SystemPropertyTree itt = (SystemPropertyTree)tag;
        String tagText = itt.getPropertyName().toString();
        return HtmlTree.CODE(createAnchorAndSearchIndex(element, tagText,
                resources.getText("doclet.System_Property")));
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public Content getThrowsHeader() {
        HtmlTree result = HtmlTree.DT(HtmlTree.SPAN(HtmlStyle.throwsLabel,
                new StringContent(resources.getText("doclet.Throws"))));
        return result;
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public Content throwsTagOutput(Element element, DocTree throwsTag) {
        ContentBuilder body = new ContentBuilder();
        CommentHelper ch = utils.getCommentHelper(element);
        Element exception = ch.getException(configuration, throwsTag);
        Content excName;
        if (exception == null) {
            excName = new RawHtml(ch.getExceptionName(throwsTag).toString());
        } else if (exception.asType() == null) {
            excName = new RawHtml(utils.getFullyQualifiedName(exception));
        } else {
            LinkInfoImpl link = new LinkInfoImpl(configuration, LinkInfoImpl.Kind.MEMBER,
                                                 exception.asType());
            link.excludeTypeBounds = true;
            excName = htmlWriter.getLink(link);
        }
        body.addContent(HtmlTree.CODE(excName));
        List<? extends DocTree> description = ch.getDescription(configuration, throwsTag);
        Content desc = htmlWriter.commentTagsToContent(throwsTag, element, description, false, inSummary);
        if (desc != null && !desc.isEmpty()) {
            body.addContent(" - ");
            body.addContent(desc);
        }
        HtmlTree result = HtmlTree.DD(body);
        return result;
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public Content throwsTagOutput(TypeMirror throwsType) {
        HtmlTree result = HtmlTree.DD(HtmlTree.CODE(htmlWriter.getLink(
                new LinkInfoImpl(configuration, LinkInfoImpl.Kind.MEMBER, throwsType))));
        return result;
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public Content valueTagOutput(VariableElement field, String constantVal, boolean includeLink) {
        return includeLink
                ? htmlWriter.getDocLink(LinkInfoImpl.Kind.VALUE_TAG, field, constantVal, false)
                : new StringContent(constantVal);
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public Content commentTagsToOutput(DocTree holderTag, List<? extends DocTree> tags) {
        return commentTagsToOutput(holderTag, null, tags, false);
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public Content commentTagsToOutput(Element holder, List<? extends DocTree> tags) {
        return commentTagsToOutput(null, holder, tags, false);
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public Content commentTagsToOutput(DocTree holderTag,
        Element holder, List<? extends DocTree> tags, boolean isFirstSentence) {
        return htmlWriter.commentTagsToContent(holderTag, holder,
                tags, isFirstSentence, inSummary);
    }

    
{@inheritDoc}
/**
     * {@inheritDoc}
     */
    public BaseConfiguration configuration() {
        return configuration;
    }

    private Content createAnchorAndSearchIndex(Element element, String tagText, String desc){
        String anchorName = htmlWriter.links.getName(tagText);
        Content result = null;
        if (isFirstSentence && inSummary) {
            result = new StringContent(tagText);
        } else {
            result = HtmlTree.A_ID(HtmlStyle.searchTagResult, anchorName, new StringContent(tagText));
            if (configuration.createindex && !tagText.isEmpty()) {
                SearchIndexItem si = new SearchIndexItem();
                si.setLabel(tagText);
                si.setDescription(desc);
                si.setUrl(htmlWriter.path.getPath() + "#" + anchorName);
                DocPaths docPaths = configuration.docPaths;
                new SimpleElementVisitor9<Void, Void>() {
                    @Override
                    public Void visitVariable(VariableElement e, Void p) {
                        TypeElement te = utils.getEnclosingTypeElement(e);
                        si.setHolder(utils.getFullyQualifiedName(e) + "." + utils.getSimpleName(e));
                        return null;
                    }

                    @Override
                    public Void visitUnknown(Element e, Void p) {
                        if (e instanceof DocletElement) {
                            DocletElement de = (DocletElement) e;
                            switch (de.getSubKind()) {
                                case OVERVIEW:
                                    si.setHolder(resources.getText("doclet.Overview"));
                                    break;
                                case DOCFILE:
                                    si.setHolder(de.getPackageElement().toString());
                                    break;
                                default:
                                    throw new IllegalStateException();
                            }
                            return null;
                        } else {
                            return super.visitUnknown(e, p);
                        }
                    }

                    @Override
                    protected Void defaultAction(Element e, Void p) {
                        si.setHolder(utils.getFullyQualifiedName(e));
                        return null;
                    }
                }.visit(element);
                si.setCategory(SearchIndexItem.Category.SEARCH_TAGS);
                configuration.tagSearchIndex.add(si);
            }
        }
        return result;
    }
}