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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * particular file as subject to the "Classpath" exception as provided
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 * 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).
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package jdk.javadoc.internal.doclets.formats.html;

import java.util.SortedSet;

import javax.lang.model.element.PackageElement;

import jdk.javadoc.internal.doclets.formats.html.markup.BodyContents;
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.HtmlTag;
import jdk.javadoc.internal.doclets.formats.html.markup.HtmlTree;
import jdk.javadoc.internal.doclets.formats.html.markup.Navigation;
import jdk.javadoc.internal.doclets.formats.html.markup.Navigation.PageMode;
import jdk.javadoc.internal.doclets.formats.html.markup.StringContent;
import jdk.javadoc.internal.doclets.toolkit.Content;
import jdk.javadoc.internal.doclets.toolkit.util.ClassTree;
import jdk.javadoc.internal.doclets.toolkit.util.DocFileIOException;
import jdk.javadoc.internal.doclets.toolkit.util.DocPath;
import jdk.javadoc.internal.doclets.toolkit.util.DocPaths;


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.
 
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.

/**
 * 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>
 */
public class TreeWriter extends AbstractTreeWriter {

    
Packages in this run.

/**
     * Packages in this run.
     */
    SortedSet<PackageElement> packages;

    
True if there are no packages specified on the command line,
False otherwise.

/**
     * True if there are no packages specified on the command line,
     * False otherwise.
     */
    private final boolean classesOnly;

    private final Navigation navBar;

    protected BodyContents bodyContents;

    
Constructor to construct TreeWriter object.

Params:
  • configuration – the current configuration of the doclet.
  • filename – String filename
  • classtree – the tree being built.
/**
     * 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(HtmlConfiguration configuration, DocPath filename, ClassTree classtree) {
        super(configuration, filename, classtree);
        packages = configuration.packages;
        classesOnly = packages.isEmpty();
        this.navBar = new Navigation(null, configuration, PageMode.TREE, path);
        this.bodyContents = new BodyContents();
    }

    
Create a TreeWriter object and use it to generate the
"overview-tree.html" file.

Params:
  • configuration – the configuration for this doclet
  • classtree – the class tree being documented.
Throws:
/**
     * Create a TreeWriter object and use it to generate the
     * "overview-tree.html" file.
     *
     * @param configuration the configuration for this doclet
     * @param classtree the class tree being documented.
     * @throws  DocFileIOException if there is a problem generating the overview tree page
     */
    public static void generate(HtmlConfiguration configuration,
                                ClassTree classtree) throws DocFileIOException {
        DocPath filename = DocPaths.OVERVIEW_TREE;
        TreeWriter treegen = new TreeWriter(configuration, filename, classtree);
        treegen.generateTreeFile();
    }

    
Generate the interface hierarchy and class hierarchy.

Throws:
  • DocFileIOException – if there is a problem generating the overview tree page
/**
     * Generate the interface hierarchy and class hierarchy.
     *
     * @throws DocFileIOException if there is a problem generating the overview tree page
     */
    public void generateTreeFile() throws DocFileIOException {
        HtmlTree body = getTreeHeader();
        Content headContent = contents.hierarchyForAllPackages;
        Content heading = HtmlTree.HEADING(Headings.PAGE_TITLE_HEADING, false,
                HtmlStyle.title, headContent);
        Content div = HtmlTree.DIV(HtmlStyle.header, heading);
        addPackageTreeLinks(div);
        Content mainContent = new ContentBuilder();
        mainContent.add(div);
        HtmlTree divTree = new HtmlTree(HtmlTag.DIV);
        divTree.setStyle(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, true);
        mainContent.add(divTree);
        HtmlTree footerTree = HtmlTree.FOOTER();
        navBar.setUserFooter(getUserHeaderFooter(false));
        footerTree.add(navBar.getContent(false));
        addBottom(footerTree);
        body.add(bodyContents
                .addMainContent(mainContent)
                .setFooter(footerTree)
                .toContent());
        printHtmlDocument(null, "class tree", body);
    }

    
Add the links to all the package tree files.

Params:
  • contentTree – the content tree to which the links will be added
/**
     * 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,
                    contents.packageHierarchies);
            contentTree.add(span);
            HtmlTree ul = new HtmlTree(HtmlTag.UL);
            ul.setStyle(HtmlStyle.horizontal);
            int i = 0;
            for (PackageElement 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.isUnnamed() ||
                        (configuration.nodeprecated && utils.isDeprecated(pkg))) {
                    i++;
                    continue;
                }
                DocPath link = pathString(pkg, DocPaths.PACKAGE_TREE);
                Content li = HtmlTree.LI(links.createLink(link,
                        new StringContent(utils.getPackageName(pkg))));
                if (i < packages.size() - 1) {
                    li.add(", ");
                }
                ul.add(li);
                i++;
            }
            contentTree.add(ul);
        }
    }

    
Get the tree header.

Returns:a content tree for the tree header
/**
     * Get the tree header.
     *
     * @return a content tree for the tree header
     */
    protected HtmlTree getTreeHeader() {
        String title = resources.getText("doclet.Window_Class_Hierarchy");
        HtmlTree bodyTree = getBody(getWindowTitle(title));
        Content headerContent = new ContentBuilder();
        addTop(headerContent);
        navBar.setUserHeader(getUserHeaderFooter(true));
        headerContent.add(navBar.getContent(true));
        bodyContents.setHeader(headerContent);
        return bodyTree;
    }

    private boolean isUnnamedPackage() {
        return packages.size() == 1 && packages.first().isUnnamed();
    }
}