/*

 * Copyright 1998-2008 Sun Microsystems, Inc.  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.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

package com.sun.tools.doclets.formats.html;

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

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

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

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

import com.sun.javadoc.*;

import java.io.*;

import java.text.SimpleDateFormat;

import java.util.*;

/**

 * Class for the Html Format Code Generation specific to JavaDoc.

 * This Class contains methods related to the Html Code Generation which

 * are used extensively while generating the entire documentation.

 *

 * @since 1.2

 * @author Atul M Dambalkar

 * @author Robert Field

 */

public class HtmlDocletWriter extends HtmlDocWriter {

    /**

     * Relative path from the file getting generated to the destination

     * directory. For example, if the file getting generated is

     * "java/lang/Object.html", then the relative path string is "../../".

     * This string can be empty if the file getting generated is in

     * the destination directory.

     */

    public String relativePath = "";

    /**

     * Same as relativepath, but normalized to never be empty or

     * end with a slash.

     */

    public String relativepathNoSlash = "";

    /**

     * Platform-dependent directory path from the current or the

     * destination directory to the file getting generated.

     * Used when creating the file.

     * For example, if the file getting generated is

     * "java/lang/Object.html", then the path string is "java/lang".

     */

    public String path = "";

    /**

     * Name of the file getting generated. If the file getting generated is

     * "java/lang/Object.html", then the filename is "Object.html".

     */

    public String filename = "";

    /**

     * The display length used for indentation while generating the class page.

     */

    public int displayLength = 0;

    /**

     * The global configuration information for this run.

     */

    public ConfigurationImpl configuration;

    /**

     * Constructor to construct the HtmlStandardWriter object.

     *

     * @param filename File to be generated.

     */

    public HtmlDocletWriter(ConfigurationImpl configuration,

                              String filename) throws IOException {

        super(configuration, filename);

        this.configuration = configuration;

        this.filename = filename;

    }

    /**

     * Constructor to construct the HtmlStandardWriter object.

     *

     * @param path         Platform-dependent {@link #path} used when

     *                     creating file.

     * @param filename     Name of file to be generated.

     * @param relativePath Value for the variable {@link #relativePath}.

     */

    public HtmlDocletWriter(ConfigurationImpl configuration,

                              String path, String filename,

                              String relativePath) throws IOException {

        super(configuration, path, filename);

        this.configuration = configuration;

        this.path = path;

        this.relativePath = relativePath;

        this.relativepathNoSlash =

            DirectoryManager.getPathNoTrailingSlash(this.relativePath);

        this.filename = filename;

    }

    /**

     * Replace {@docRoot} tag used in options that accept HTML text, such

     * as -header, -footer, -top and -bottom, and when converting a relative

     * HREF where commentTagsToString inserts a {@docRoot} where one was

     * missing.  (Also see DocRootTaglet for {@docRoot} tags in doc

     * comments.)

     * <p>

     * Replace {@docRoot} tag in htmlstr with the relative path to the

     * destination directory from the directory where the file is being

     * written, looping to handle all such tags in htmlstr.

     * <p>

     * For example, for "-d docs" and -header containing {@docRoot}, when

     * the HTML page for source file p/C1.java is being generated, the

     * {@docRoot} tag would be inserted into the header as "../",

     * the relative path from docs/p/ to docs/ (the document root).

     * <p>

     * Note: This doc comment was written with '@' representing '@'

     * to prevent the inline tag from being interpreted.

     */

    public String replaceDocRootDir(String htmlstr) {

        // Return if no inline tags exist

        int index = htmlstr.indexOf("{@");

        if (index < 0) {

            return htmlstr;

        }

        String lowerHtml = htmlstr.toLowerCase();

        // Return index of first occurrence of {@docroot}

        // Note: {@docRoot} is not case sensitive when passed in w/command line option

        index = lowerHtml.indexOf("{@docroot}", index);

        if (index < 0) {

            return htmlstr;

        }

        StringBuffer buf = new StringBuffer();

        int previndex = 0;

        while (true) {

            // Search for lowercase version of {@docRoot}

            index = lowerHtml.indexOf("{@docroot}", previndex);

            // If next {@docRoot} tag not found, append rest of htmlstr and exit loop

            if (index < 0) {

                buf.append(htmlstr.substring(previndex));

                break;

            }

            // If next {@docroot} tag found, append htmlstr up to start of tag

            buf.append(htmlstr.substring(previndex, index));

            previndex = index + 10;  // length for {@docroot} string

            // Insert relative path where {@docRoot} was located

            buf.append(relativepathNoSlash);

            // Append slash if next character is not a slash

            if (relativepathNoSlash.length() > 0 && previndex < htmlstr.length()

                    && htmlstr.charAt(previndex) != '/') {

                buf.append(DirectoryManager.URL_FILE_SEPERATOR);

            }

        }

        return buf.toString();

    }

    /**

     * Print Html Hyper Link, with target frame.  This

     * link will only appear if page is not in a frame.

     *

     * @param link String name of the file.

     * @param where Position in the file

     * @param target Name of the target frame.

     * @param label Tag for the link.

     */

    public void printNoFramesTargetHyperLink(String link, String where,

                                               String target, String label,

        script();

        println("  <!--");

        println("  if(window==top) {");

        println("    document.writeln('"

        println("  }");

        println("  //-->");

        scriptEnd();

        noScript();

        noScriptEnd();

        println(DocletConstants.NL);

    }

    private void printMethodInfo(MethodDoc method) {

        ClassDoc[] intfacs = method.containingClass().interfaces();

        MethodDoc overriddenMethod = method.overriddenMethod();

        if (intfacs.length > 0 || overriddenMethod != null) {

            dd();

            printTagsInfoHeader();

            MethodWriterImpl.printImplementsInfo(this, method);

            if (overriddenMethod != null) {

                MethodWriterImpl.printOverridden(this,

                    method.overriddenType(), overriddenMethod);

            }

            printTagsInfoFooter();

            ddEnd();

        }

        dd();

    }

    protected void printTags(Doc doc) {

        if(configuration.nocomment){

            return;

        }

        if (doc instanceof MethodDoc) {

            printMethodInfo((MethodDoc) doc);

        }

        TagletOutputImpl output = new TagletOutputImpl("");

        TagletWriter.genTagOuput(configuration.tagletManager, doc,

            configuration.tagletManager.getCustomTags(doc),

                getTagletWriterInstance(false), output);

        if (output.toString().trim().length() > 0) {

            printTagsInfoHeader();

            print(output.toString());

            printTagsInfoFooter();

        } else if (! (doc instanceof ConstructorDoc ||

            doc instanceof RootDoc || doc instanceof ClassDoc)) {

            //To be consistent with 1.4.2 output.

            //I hate to do this but we have to pass the diff test to prove

            //nothing has broken.

            printTagsInfoHeader();

            printTagsInfoFooter();

        }

    }

    /**

     * Returns a TagletWriter that knows how to write HTML.

     *

     * @return a TagletWriter that knows how to write HTML.

     */

    public TagletWriter getTagletWriterInstance(boolean isFirstSentence) {

        return new TagletWriterImpl(this, isFirstSentence);

    }

    protected void printTagsInfoHeader() {

        dl();

    }

    protected void printTagsInfoFooter() {

        dlEnd();

    }

    /**

     * Print Package link, with target frame.

     *

     * @param pd The link will be to the "package-summary.html" page for this

     * package.

     * @param target Name of the target frame.

     * @param label Tag for the link.

     */

    public void printTargetPackageLink(PackageDoc pd, String target,

        String label) {

        print(getHyperLink(pathString(pd, "package-summary.html"), "", label,

            false, "", "", target));

    }

    /**

     * Print the html file header. Also print Html page title and stylesheet

     * default properties.

     *

     * @param title         String window title to go in the <TITLE> tag

     * @param metakeywords  Array of String keywords for META tag.  Each element

     *                      of the array is assigned to a separate META tag.

     *                      Pass in null for no array.

     * @param includeScript boolean true if printing windowtitle script.

     *             False for files that appear in the left-hand frames.

     */

    public void printHtmlHeader(String title, String[] metakeywords,

            boolean includeScript) {

        println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 " +

                    "Transitional//EN\" " +

                    "\"http://www.w3.org/TR/html4/loose.dtd\">");

        println("<!--NewPage-->");

        html();

        head();

        if (! configuration.notimestamp) {

            print("<!-- Generated by javadoc (build " + ConfigurationImpl.BUILD_DATE + ") on ");

            print(today());

            println(" -->");

        }

        if (configuration.charset.length() > 0) {

            println("<META http-equiv=\"Content-Type\" content=\"text/html; "

                        + "charset=" + configuration.charset + "\">");

        }

        if ( configuration.windowtitle.length() > 0 ) {

            title += " (" + configuration.windowtitle  + ")";

        }

        title(title);

        println(title);

        titleEnd();

        println("");

        if (! configuration.notimestamp) {

                SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");

                println("<META NAME=\"date\" "

                                    + "CONTENT=\"" + dateFormat.format(new Date()) + "\">");

        }

        if ( metakeywords != null ) {

            for ( int i=0; i < metakeywords.length; i++ ) {

                println("<META NAME=\"keywords\" "

                            + "CONTENT=\"" + metakeywords[i] + "\">");

            }

        }

        println("");

        printStyleSheetProperties();

        println("");

        // Don't print windowtitle script for overview-frame, allclasses-frame

        // and package-frame

        if (includeScript) {

            printWinTitleScript(title);

        }

        println("");

        headEnd();

        println("");

        body("white", includeScript);

    }

    /**

     * Print user specified header and the footer.

     *

     * @param header if true print the user provided header else print the

     * user provided footer.

     */

    public void printUserHeaderFooter(boolean header) {

        em();

        if (header) {

            print(replaceDocRootDir(configuration.header));

        } else {

            if (configuration.footer.length() != 0) {

                print(replaceDocRootDir(configuration.footer));

            } else {

                print(replaceDocRootDir(configuration.header));

            }

        }

        emEnd();

    }

    /**

     * Print the user specified top.

     */

    public void printTop() {

        print(replaceDocRootDir(configuration.top));

        hr();

    }

    /**

     * Print the user specified bottom.

     */

    public void printBottom() {

        hr();

        print(replaceDocRootDir(configuration.bottom));

    }

    /**

     * Print the navigation bar for the Html page at the top and and the bottom.

     *

     * @param header If true print navigation bar at the top of the page else

     * print the nevigation bar at the bottom.

     */

    protected void navLinks(boolean header) {

        println("");

        if (!configuration.nonavbar) {

            if (header) {

                println(DocletConstants.NL + "<!-- ========= START OF TOP NAVBAR ======= -->");

                anchor("navbar_top");

                println();

                print(getHyperLink("", "skip-navbar_top", "", false, "",

                    configuration.getText("doclet.Skip_navigation_links"), ""));

            } else {

                println(DocletConstants.NL + "<!-- ======= START OF BOTTOM NAVBAR ====== -->");

                anchor("navbar_bottom");

                println();

                print(getHyperLink("", "skip-navbar_bottom", "", false, "",

                    configuration.getText("doclet.Skip_navigation_links"), ""));

            }

            table(0, "100%", 1, 0);

            tr();

            tdColspanBgcolorStyle(2, "#EEEEFF", "NavBarCell1");

            println("");

            if (header) {

                anchor("navbar_top_firstrow");

            } else {

                anchor("navbar_bottom_firstrow");

            }

            table(0, 0, 3);

            print("  ");

            trAlignVAlign("center", "top");

            if (configuration.createoverview) {

                navLinkContents();

            }

            if (configuration.packages.length == 1) {

                navLinkPackage(configuration.packages[0]);

            } else if (configuration.packages.length > 1) {

                navLinkPackage();

            }

            navLinkClass();

            if(configuration.classuse) {

                navLinkClassUse();

            }

            if(configuration.createtree) {

                navLinkTree();

            }

            if(!(configuration.nodeprecated ||

                     configuration.nodeprecatedlist)) {

                navLinkDeprecated();

            }

            if(configuration.createindex) {

                navLinkIndex();

            }

            if (!configuration.nohelp) {

                navLinkHelp();

            }

            print("  ");

            trEnd();

            tableEnd();

            tdEnd();

            tdAlignVAlignRowspan("right", "top", 3);

            printUserHeaderFooter(header);

            tdEnd();

            trEnd();

            println("");

            tr();

            tdBgcolorStyle("white", "NavBarCell2");

            font("-2");

            space();

            navLinkPrevious();

            space();

            println("");

            space();

            navLinkNext();

            fontEnd();

            tdEnd();

            tdBgcolorStyle("white", "NavBarCell2");

            font("-2");

            print("  ");

            navShowLists();

            print("  ");

            space();

            println("");

            space();

            navHideLists(filename);

            print("  ");

            space();

            println("");

            space();

            navLinkClassIndex();

            fontEnd();

            tdEnd();

            trEnd();

            printSummaryDetailLinks();

            tableEnd();

            if (header) {

                aName("skip-navbar_top");

                aEnd();

                println(DocletConstants.NL + "<!-- ========= END OF TOP NAVBAR ========= -->");

            } else {

                aName("skip-navbar_bottom");

                aEnd();

                println(DocletConstants.NL + "<!-- ======== END OF BOTTOM NAVBAR ======= -->");

            }

            println("");

        }

    }

    /**

     * Print the word "NEXT" to indicate that no link is available.  Override

     * this method to customize next link.

     */

    protected void navLinkNext() {

        navLinkNext(null);

    }

    /**

     * Print the word "PREV" to indicate that no link is available.  Override

     * this method to customize prev link.

     */

    protected void navLinkPrevious() {

        navLinkPrevious(null);

    }

    /**

     * Do nothing. This is the default method.

     */

    protected void printSummaryDetailLinks() {

    }

    /**

     * Print link to the "overview-summary.html" page.

     */

    protected void navLinkContents() {

        navCellStart();

        printHyperLink(relativePath + "overview-summary.html", "",

                       configuration.getText("doclet.Overview"), true, "NavBarFont1");

        navCellEnd();

    }