/*

 * Copyright (c) 1998, 2014, 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 com.sun.tools.doclets.formats.html;

import java.io.IOException;

import java.util.ArrayList;

import java.util.Collections;

import java.util.HashMap;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import java.util.Set;

import java.util.SortedSet;

import java.util.TreeSet;

import com.sun.javadoc.*;

import com.sun.tools.doclets.formats.html.markup.*;

import com.sun.tools.doclets.internal.toolkit.*;

import com.sun.tools.doclets.internal.toolkit.util.*;

/**

 * Generate class usage information.

 *

 *  <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 Robert G. Field

 * @author Bhavesh Patel (Modified)

 */

public class ClassUseWriter extends SubWriterHolderWriter {

    final ClassDoc classdoc;

    Set<PackageDoc> pkgToPackageAnnotations = null;

    final Map<String,List<ProgramElementDoc>> pkgToClassTypeParameter;

    final Map<String,List<ProgramElementDoc>> pkgToClassAnnotations;

    final Map<String,List<ProgramElementDoc>> pkgToMethodTypeParameter;

    final Map<String,List<ProgramElementDoc>> pkgToMethodArgTypeParameter;

    final Map<String,List<ProgramElementDoc>> pkgToMethodReturnTypeParameter;

    final Map<String,List<ProgramElementDoc>> pkgToMethodAnnotations;

    final Map<String,List<ProgramElementDoc>> pkgToMethodParameterAnnotations;

    final Map<String,List<ProgramElementDoc>> pkgToFieldTypeParameter;

    final Map<String,List<ProgramElementDoc>> pkgToFieldAnnotations;

    final Map<String,List<ProgramElementDoc>> pkgToSubclass;

    final Map<String,List<ProgramElementDoc>> pkgToSubinterface;

    final Map<String,List<ProgramElementDoc>> pkgToImplementingClass;

    final Map<String,List<ProgramElementDoc>> pkgToField;

    final Map<String,List<ProgramElementDoc>> pkgToMethodReturn;

    final Map<String,List<ProgramElementDoc>> pkgToMethodArgs;

    final Map<String,List<ProgramElementDoc>> pkgToMethodThrows;

    final Map<String,List<ProgramElementDoc>> pkgToConstructorAnnotations;

    final Map<String,List<ProgramElementDoc>> pkgToConstructorParameterAnnotations;

    final Map<String,List<ProgramElementDoc>> pkgToConstructorArgs;

    final Map<String,List<ProgramElementDoc>> pkgToConstructorArgTypeParameter;

    final Map<String,List<ProgramElementDoc>> pkgToConstructorThrows;

    final SortedSet<PackageDoc> pkgSet;

    final MethodWriterImpl methodSubWriter;

    final ConstructorWriterImpl constrSubWriter;

    final FieldWriterImpl fieldSubWriter;

    final NestedClassWriterImpl classSubWriter;

    // Summary for various use tables.

    final String classUseTableSummary;

    final String subclassUseTableSummary;

    final String subinterfaceUseTableSummary;

    final String fieldUseTableSummary;

    final String methodUseTableSummary;

    final String constructorUseTableSummary;

    /**

     * Constructor.

     *

     * @param filename the file to be generated.

     * @throws IOException

     * @throws DocletAbortException

     */

    public ClassUseWriter(ConfigurationImpl configuration,

                          ClassUseMapper mapper, DocPath filename,

                          ClassDoc classdoc) throws IOException {

        super(configuration, filename);

        this.classdoc = classdoc;

        if (mapper.classToPackageAnnotations.containsKey(classdoc.qualifiedName()))

                pkgToPackageAnnotations = new TreeSet<>(mapper.classToPackageAnnotations.get(classdoc.qualifiedName()));

        configuration.currentcd = classdoc;

        this.pkgSet = new TreeSet<>();

        this.pkgToClassTypeParameter = pkgDivide(mapper.classToClassTypeParam);

        this.pkgToClassAnnotations = pkgDivide(mapper.classToClassAnnotations);

        this.pkgToMethodTypeParameter = pkgDivide(mapper.classToExecMemberDocTypeParam);

        this.pkgToMethodArgTypeParameter = pkgDivide(mapper.classToExecMemberDocArgTypeParam);

        this.pkgToFieldTypeParameter = pkgDivide(mapper.classToFieldDocTypeParam);

        this.pkgToFieldAnnotations = pkgDivide(mapper.annotationToFieldDoc);

        this.pkgToMethodReturnTypeParameter = pkgDivide(mapper.classToExecMemberDocReturnTypeParam);

        this.pkgToMethodAnnotations = pkgDivide(mapper.classToExecMemberDocAnnotations);

        this.pkgToMethodParameterAnnotations = pkgDivide(mapper.classToExecMemberDocParamAnnotation);

        this.pkgToSubclass = pkgDivide(mapper.classToSubclass);

        this.pkgToSubinterface = pkgDivide(mapper.classToSubinterface);

        this.pkgToImplementingClass = pkgDivide(mapper.classToImplementingClass);

        this.pkgToField = pkgDivide(mapper.classToField);

        this.pkgToMethodReturn = pkgDivide(mapper.classToMethodReturn);

        this.pkgToMethodArgs = pkgDivide(mapper.classToMethodArgs);

        this.pkgToMethodThrows = pkgDivide(mapper.classToMethodThrows);

        this.pkgToConstructorAnnotations = pkgDivide(mapper.classToConstructorAnnotations);

        this.pkgToConstructorParameterAnnotations = pkgDivide(mapper.classToConstructorParamAnnotation);

        this.pkgToConstructorArgs = pkgDivide(mapper.classToConstructorArgs);

        this.pkgToConstructorArgTypeParameter = pkgDivide(mapper.classToConstructorDocArgTypeParam);

        this.pkgToConstructorThrows = pkgDivide(mapper.classToConstructorThrows);

        //tmp test

        if (pkgSet.size() > 0 &&

            mapper.classToPackage.containsKey(classdoc.qualifiedName()) &&

            !pkgSet.equals(mapper.classToPackage.get(classdoc.qualifiedName()))) {

            configuration.root.printWarning("Internal error: package sets don't match: " + pkgSet + " with: " +

                                   mapper.classToPackage.get(classdoc.qualifiedName()));

        }

        methodSubWriter = new MethodWriterImpl(this);

        constrSubWriter = new ConstructorWriterImpl(this);

        fieldSubWriter = new FieldWriterImpl(this);

        classSubWriter = new NestedClassWriterImpl(this);

        classUseTableSummary = configuration.getText("doclet.Use_Table_Summary",

                configuration.getText("doclet.classes"));

        subclassUseTableSummary = configuration.getText("doclet.Use_Table_Summary",

                configuration.getText("doclet.subclasses"));

        subinterfaceUseTableSummary = configuration.getText("doclet.Use_Table_Summary",

                configuration.getText("doclet.subinterfaces"));

        fieldUseTableSummary = configuration.getText("doclet.Use_Table_Summary",

                configuration.getText("doclet.fields"));

        methodUseTableSummary = configuration.getText("doclet.Use_Table_Summary",

                configuration.getText("doclet.methods"));

        constructorUseTableSummary = configuration.getText("doclet.Use_Table_Summary",

                configuration.getText("doclet.constructors"));

    }

    /**

     * Write out class use pages.

     * @throws DocletAbortException

     */

    public static void generate(ConfigurationImpl configuration,

                                ClassTree classtree)  {

        ClassUseMapper mapper = new ClassUseMapper(configuration.root, classtree);

        for (ClassDoc aClass : configuration.root.classes()) {

            // If -nodeprecated option is set and the containing package is marked

            // as deprecated, do not generate the class-use page. We will still generate

            // the class-use page if the class is marked as deprecated but the containing

            // package is not since it could still be linked from that package-use page.

            if (!(configuration.nodeprecated &&

                  configuration.utils.isDeprecated(aClass.containingPackage())))

                ClassUseWriter.generate(configuration, mapper, aClass);

        }

        for (PackageDoc pkg : configuration.packages) {

            // If -nodeprecated option is set and the package is marked

            // as deprecated, do not generate the package-use page.

            if (!(configuration.nodeprecated && configuration.utils.isDeprecated(pkg)))

                PackageUseWriter.generate(configuration, mapper, pkg);

        }

    }

    private Map<String,List<ProgramElementDoc>> pkgDivide(Map<String,? extends List<? extends ProgramElementDoc>> classMap) {

        Map<String,List<ProgramElementDoc>> map = new HashMap<>();

        List<? extends ProgramElementDoc> list= classMap.get(classdoc.qualifiedName());

        if (list != null) {

            Collections.sort(list, utils.makeComparatorForClassUse());

            for (ProgramElementDoc doc : list) {

                PackageDoc pkg = doc.containingPackage();

                pkgSet.add(pkg);

                List<ProgramElementDoc> inPkg = map.get(pkg.name());

                if (inPkg == null) {

                    inPkg = new ArrayList<>();

                    map.put(pkg.name(), inPkg);

                }

                inPkg.add(doc);

            }

        }

        return map;

    }

    /**

     * Generate a class page.

     */

    public static void generate(ConfigurationImpl configuration,

                                ClassUseMapper mapper, ClassDoc classdoc) {

        ClassUseWriter clsgen;

        DocPath path = DocPath.forPackage(classdoc)

                .resolve(DocPaths.CLASS_USE)

                .resolve(DocPath.forName(classdoc));

        try {

            clsgen = new ClassUseWriter(configuration,

                                        mapper, path,

                                        classdoc);

            clsgen.generateClassUseFile();

            clsgen.close();

        } catch (IOException exc) {

            configuration.standardmessage.

                error("doclet.exception_encountered",

                      exc.toString(), path.getPath());

            throw new DocletAbortException(exc);

        }

    }

    /**

     * Generate the class use list.

     */

    protected void generateClassUseFile() throws IOException {

        Content body = getClassUseHeader();

        HtmlTree div = new HtmlTree(HtmlTag.DIV);

        div.addStyle(HtmlStyle.classUseContainer);

        if (pkgSet.size() > 0) {

            addClassUse(div);

        } else {

            div.addContent(getResource("doclet.ClassUse_No.usage.of.0",

                    classdoc.qualifiedName()));

        }

        body.addContent(div);

        addNavLinks(false, body);

        addBottom(body);

        printHtmlDocument(null, true, body);

    }

    /**

     * Add the class use documentation.

     *

     * @param contentTree the content tree to which the class use information will be added

     */

    protected void addClassUse(Content contentTree) throws IOException {

        HtmlTree ul = new HtmlTree(HtmlTag.UL);

        ul.addStyle(HtmlStyle.blockList);

        if (configuration.packages.size() > 1) {

            addPackageList(ul);

            addPackageAnnotationList(ul);

        }

        addClassList(ul);

        contentTree.addContent(ul);

    }

    /**

     * Add the packages list that use the given class.

     *

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

     */

    protected void addPackageList(Content contentTree) throws IOException {

        Content table = HtmlTree.TABLE(HtmlStyle.useSummary, 0, 3, 0, useTableSummary,

                getTableCaption(configuration.getResource(

                "doclet.ClassUse_Packages.that.use.0",

                getLink(new LinkInfoImpl(configuration, LinkInfoImpl.Kind.CLASS_USE_HEADER, classdoc

                )))));

        table.addContent(getSummaryTableHeader(packageTableHeader, "col"));

        Content tbody = new HtmlTree(HtmlTag.TBODY);

        Iterator<PackageDoc> it = pkgSet.iterator();

        for (int i = 0; it.hasNext(); i++) {

            PackageDoc pkg = it.next();

            HtmlTree tr = new HtmlTree(HtmlTag.TR);

            if (i % 2 == 0) {

                tr.addStyle(HtmlStyle.altColor);

            } else {

                tr.addStyle(HtmlStyle.rowColor);

            }

            addPackageUse(pkg, tr);

            tbody.addContent(tr);

        }

        table.addContent(tbody);

        Content li = HtmlTree.LI(HtmlStyle.blockList, table);

        contentTree.addContent(li);

    }

    /**

     * Add the package annotation list.

     *

     * @param contentTree the content tree to which the package annotation list will be added

     */

    protected void addPackageAnnotationList(Content contentTree) throws IOException {

        if ((!classdoc.isAnnotationType()) ||

                pkgToPackageAnnotations == null ||

                pkgToPackageAnnotations.isEmpty()) {

            return;

        }

        Content table = HtmlTree.TABLE(HtmlStyle.useSummary, 0, 3, 0, useTableSummary,

                getTableCaption(configuration.getResource(

                "doclet.ClassUse_PackageAnnotation",

                getLink(new LinkInfoImpl(configuration,

                        LinkInfoImpl.Kind.CLASS_USE_HEADER, classdoc)))));

        table.addContent(getSummaryTableHeader(packageTableHeader, "col"));

        Content tbody = new HtmlTree(HtmlTag.TBODY);

        Iterator<PackageDoc> it = pkgToPackageAnnotations.iterator();

        for (int i = 0; it.hasNext(); i++) {

            PackageDoc pkg = it.next();

            HtmlTree tr = new HtmlTree(HtmlTag.TR);

            if (i % 2 == 0) {

                tr.addStyle(HtmlStyle.altColor);

            } else {

                tr.addStyle(HtmlStyle.rowColor);

            }

            Content tdFirst = HtmlTree.TD(HtmlStyle.colFirst,

                    getPackageLink(pkg, new StringContent(pkg.name())));

            tr.addContent(tdFirst);

            HtmlTree tdLast = new HtmlTree(HtmlTag.TD);

            tdLast.addStyle(HtmlStyle.colLast);

            addSummaryComment(pkg, tdLast);

            tr.addContent(tdLast);

            tbody.addContent(tr);

        }

        table.addContent(tbody);

        Content li = HtmlTree.LI(HtmlStyle.blockList, table);

        contentTree.addContent(li);

    }

    /**

     * Add the class list that use the given class.

     *

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

     */

    protected void addClassList(Content contentTree) throws IOException {

        HtmlTree ul = new HtmlTree(HtmlTag.UL);

        ul.addStyle(HtmlStyle.blockList);

        for (PackageDoc pkg : pkgSet) {

            Content li = HtmlTree.LI(HtmlStyle.blockList, getMarkerAnchor(pkg.name()));

            Content link = getResource("doclet.ClassUse_Uses.of.0.in.1",

                                       getLink(new LinkInfoImpl(configuration, LinkInfoImpl.Kind.CLASS_USE_HEADER,

                                                                classdoc)),

                                       getPackageLink(pkg, utils.getPackageName(pkg)));

            Content heading = HtmlTree.HEADING(HtmlConstants.SUMMARY_HEADING, link);

            li.addContent(heading);

            addClassUse(pkg, li);

            ul.addContent(li);

        }

        Content li = HtmlTree.LI(HtmlStyle.blockList, ul);

        contentTree.addContent(li);

    }

    /**

     * Add the package use information.

     *

     * @param pkg the package that uses the given class

     * @param contentTree the content tree to which the package use information will be added

     */

    protected void addPackageUse(PackageDoc pkg, Content contentTree) throws IOException {

        Content tdFirst = HtmlTree.TD(HtmlStyle.colFirst,

                getHyperLink(pkg.name(), new StringContent(utils.getPackageName(pkg))));

        contentTree.addContent(tdFirst);

        HtmlTree tdLast = new HtmlTree(HtmlTag.TD);

        tdLast.addStyle(HtmlStyle.colLast);

        addSummaryComment(pkg, tdLast);

        contentTree.addContent(tdLast);

    }

    /**

     * Add the class use information.

     *

     * @param pkg the package that uses the given class

     * @param contentTree the content tree to which the class use information will be added

     */

    protected void addClassUse(PackageDoc pkg, Content contentTree) throws IOException {

        Content classLink = getLink(new LinkInfoImpl(configuration,

            LinkInfoImpl.Kind.CLASS_USE_HEADER, classdoc));

        Content pkgLink = getPackageLink(pkg, utils.getPackageName(pkg));

        classSubWriter.addUseInfo(pkgToClassAnnotations.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_Annotation", classLink,

                pkgLink), classUseTableSummary, contentTree);

        classSubWriter.addUseInfo(pkgToClassTypeParameter.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_TypeParameter", classLink,

                pkgLink), classUseTableSummary, contentTree);

        classSubWriter.addUseInfo(pkgToSubclass.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_Subclass", classLink,

                pkgLink), subclassUseTableSummary, contentTree);

        classSubWriter.addUseInfo(pkgToSubinterface.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_Subinterface", classLink,

                pkgLink), subinterfaceUseTableSummary, contentTree);

        classSubWriter.addUseInfo(pkgToImplementingClass.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_ImplementingClass", classLink,

                pkgLink), classUseTableSummary, contentTree);

        fieldSubWriter.addUseInfo(pkgToField.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_Field", classLink,

                pkgLink), fieldUseTableSummary, contentTree);

        fieldSubWriter.addUseInfo(pkgToFieldAnnotations.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_FieldAnnotations", classLink,

                pkgLink), fieldUseTableSummary, contentTree);

        fieldSubWriter.addUseInfo(pkgToFieldTypeParameter.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_FieldTypeParameter", classLink,

                pkgLink), fieldUseTableSummary, contentTree);

        methodSubWriter.addUseInfo(pkgToMethodAnnotations.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_MethodAnnotations", classLink,

                pkgLink), methodUseTableSummary, contentTree);

        methodSubWriter.addUseInfo(pkgToMethodParameterAnnotations.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_MethodParameterAnnotations", classLink,

                pkgLink), methodUseTableSummary, contentTree);

        methodSubWriter.addUseInfo(pkgToMethodTypeParameter.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_MethodTypeParameter", classLink,

                pkgLink), methodUseTableSummary, contentTree);

        methodSubWriter.addUseInfo(pkgToMethodReturn.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_MethodReturn", classLink,

                pkgLink), methodUseTableSummary, contentTree);

        methodSubWriter.addUseInfo(pkgToMethodReturnTypeParameter.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_MethodReturnTypeParameter", classLink,

                pkgLink), methodUseTableSummary, contentTree);

        methodSubWriter.addUseInfo(pkgToMethodArgs.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_MethodArgs", classLink,

                pkgLink), methodUseTableSummary, contentTree);

        methodSubWriter.addUseInfo(pkgToMethodArgTypeParameter.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_MethodArgsTypeParameters", classLink,

                pkgLink), methodUseTableSummary, contentTree);

        methodSubWriter.addUseInfo(pkgToMethodThrows.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_MethodThrows", classLink,

                pkgLink), methodUseTableSummary, contentTree);

        constrSubWriter.addUseInfo(pkgToConstructorAnnotations.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_ConstructorAnnotations", classLink,

                pkgLink), constructorUseTableSummary, contentTree);

        constrSubWriter.addUseInfo(pkgToConstructorParameterAnnotations.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_ConstructorParameterAnnotations", classLink,

                pkgLink), constructorUseTableSummary, contentTree);

        constrSubWriter.addUseInfo(pkgToConstructorArgs.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_ConstructorArgs", classLink,

                pkgLink), constructorUseTableSummary, contentTree);

        constrSubWriter.addUseInfo(pkgToConstructorArgTypeParameter.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_ConstructorArgsTypeParameters", classLink,

                pkgLink), constructorUseTableSummary, contentTree);

        constrSubWriter.addUseInfo(pkgToConstructorThrows.get(pkg.name()),

                configuration.getResource("doclet.ClassUse_ConstructorThrows", classLink,

                pkgLink), constructorUseTableSummary, contentTree);

    }

    /**

     * Get the header for the class use Listing.

     *

     * @return a content tree representing the class use header

     */

    protected Content getClassUseHeader() {

        String cltype = configuration.getText(classdoc.isInterface()?

            "doclet.Interface":"doclet.Class");

        String clname = classdoc.qualifiedName();

        String title = configuration.getText("doclet.Window_ClassUse_Header",

                cltype, clname);

        Content bodyTree = getBody(true, getWindowTitle(title));

        addTop(bodyTree);

        addNavLinks(true, bodyTree);

        ContentBuilder headContent = new ContentBuilder();

        headContent.addContent(getResource("doclet.ClassUse_Title", cltype));

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

        headContent.addContent(clname);

        Content heading = HtmlTree.HEADING(HtmlConstants.CLASS_PAGE_HEADING,

                true, HtmlStyle.title, headContent);

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

        bodyTree.addContent(div);

        return bodyTree;

    }

    /**

     * Get this package link.

     *

     * @return a content tree for the package link

     */

    protected Content getNavLinkPackage() {

        Content linkContent =

                getHyperLink(DocPath.parent.resolve(DocPaths.PACKAGE_SUMMARY), packageLabel);

        Content li = HtmlTree.LI(linkContent);

        return li;

    }

    /**

     * Get class page link.

     *

     * @return a content tree for the class page link

     */

    protected Content getNavLinkClass() {

        Content linkContent = getLink(new LinkInfoImpl(

                configuration, LinkInfoImpl.Kind.CLASS_USE_HEADER, classdoc)

                .label(configuration.getText("doclet.Class")));

        Content li = HtmlTree.LI(linkContent);

        return li;

    }

    /**

     * Get the use link.

     *

     * @return a content tree for the use link