/*

 * Copyright (c) 1997, 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.SortedSet;

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 Hierarchy page for all the Classes in this run.  Use

 * ClassTree for building the Tree. The name of

 * the generated file is "overview-tree.html" and it is generated in the

 * current or the destination directory.

 *

 *  <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 Atul M Dambalkar

 * @author Bhavesh Patel (Modified)

 */

public class TreeWriter extends AbstractTreeWriter {

    /**

     * Packages in this run.

     */

    SortedSet<PackageDoc> packages;

    /**

     * True if there are no packages specified on the command line,

     * False otherwise.

     */

    private boolean classesonly;

    /**

     * Constructor to construct TreeWriter object.

     *

     * @param configuration the current configuration of the doclet.

     * @param filename String filename

     * @param classtree the tree being built.

     */

    public TreeWriter(ConfigurationImpl configuration,

            DocPath filename, ClassTree classtree) throws IOException {

        super(configuration, filename, classtree);

        packages = configuration.packages;

        classesonly = packages.isEmpty();

    }

    /**

     * Create a TreeWriter object and use it to generate the

     * "overview-tree.html" file.

     *

     * @param classtree the class tree being documented.

     * @throws  DocletAbortException

     */

    public static void generate(ConfigurationImpl configuration,

                                ClassTree classtree) {

        TreeWriter treegen;

        DocPath filename = DocPaths.OVERVIEW_TREE;

        try {

            treegen = new TreeWriter(configuration, filename, classtree);

            treegen.generateTreeFile();

            treegen.close();

        } catch (IOException exc) {

            configuration.standardmessage.error(

                        "doclet.exception_encountered",

                        exc.toString(), filename);

            throw new DocletAbortException(exc);

        }

    }

    /**

     * Generate the interface hierarchy and class hierarchy.

     */

    public void generateTreeFile() throws IOException {

        Content body = getTreeHeader();

        Content headContent = getResource("doclet.Hierarchy_For_All_Packages");

        Content heading = HtmlTree.HEADING(HtmlConstants.TITLE_HEADING, false,

                HtmlStyle.title, headContent);

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

        addPackageTreeLinks(div);

        body.addContent(div);

        HtmlTree divTree = new HtmlTree(HtmlTag.DIV);

        divTree.addStyle(HtmlStyle.contentContainer);

        addTree(classtree.baseclasses(), "doclet.Class_Hierarchy", divTree);

        addTree(classtree.baseinterfaces(), "doclet.Interface_Hierarchy", divTree);

        addTree(classtree.baseAnnotationTypes(), "doclet.Annotation_Type_Hierarchy", divTree);

        addTree(classtree.baseEnums(), "doclet.Enum_Hierarchy", divTree);

        body.addContent(divTree);

        addNavLinks(false, body);

        addBottom(body);

        printHtmlDocument(null, true, body);

    }

    /**

     * Add the links to all the package tree files.

     *

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

     */

    protected void addPackageTreeLinks(Content contentTree) {

        //Do nothing if only unnamed package is used

        if (isUnnamedPackage()) {

            return;

        }

        if (!classesonly) {

            Content span = HtmlTree.SPAN(HtmlStyle.packageHierarchyLabel,

                    getResource("doclet.Package_Hierarchies"));

            contentTree.addContent(span);

            HtmlTree ul = new HtmlTree(HtmlTag.UL);

            ul.addStyle(HtmlStyle.horizontal);

            int i = 0;

            for (PackageDoc pkg : packages) {

                // If the package name length is 0 or if -nodeprecated option

                // is set and the package is marked as deprecated, do not include

                // the page in the list of package hierarchies.

                if (pkg.name().isEmpty() ||

                        (configuration.nodeprecated && utils.isDeprecated(pkg))) {

                    i++;

                    continue;

                }

                DocPath link = pathString(pkg, DocPaths.PACKAGE_TREE);

                Content li = HtmlTree.LI(getHyperLink(

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

                if (i < packages.size() - 1) {

                    li.addContent(", ");

                }

                ul.addContent(li);

                i++;

            }

            contentTree.addContent(ul);

        }

    }

    /**

     * Get the tree header.

     *

     * @return a content tree for the tree header

     */

    protected Content getTreeHeader() {

        String title = configuration.getText("doclet.Window_Class_Hierarchy");

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

        addTop(bodyTree);

        addNavLinks(true, bodyTree);

        return bodyTree;

    }

    private boolean isUnnamedPackage() {

        return packages.size() == 1 && packages.first().name().isEmpty();

    }

}