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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is free software; you can redistribute it and/or modify it
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 * 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,
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package com.sun.tools.doclets.formats.html;

import java.io.*;
import java.util.*;

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.*;


Abstract class to print the class hierarchy page for all the Classes. This is sub-classed by PackageTreeWriter and TreeWriter to generate the Package Tree and global Tree(for all the classes and packages) pages. 
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:Atul M Dambalkar
/**
 * Abstract class to print the class hierarchy page for all the Classes. This
 * is sub-classed by {@link PackageTreeWriter} and {@link TreeWriter} to
 * generate the Package Tree and global Tree(for all the classes and packages)
 * pages.
 *
 *  <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
 */
@Deprecated
public abstract class AbstractTreeWriter extends HtmlDocletWriter {

    
The class and interface tree built by using ClassTree 
/**
     * The class and interface tree built by using {@link ClassTree}
     */
    protected final ClassTree classtree;

    
Constructor initializes classtree variable. This constructor will be used
while generating global tree file "overview-tree.html".

Params:
  • configuration –  The current configuration
  • filename –   File to be generated.
  • classtree –  Tree built by ClassTree.
Throws:
/**
     * Constructor initializes classtree variable. This constructor will be used
     * while generating global tree file "overview-tree.html".
     *
     * @param configuration  The current configuration
     * @param filename   File to be generated.
     * @param classtree  Tree built by {@link ClassTree}.
     * @throws IOException
     * @throws DocletAbortException
     */
    protected AbstractTreeWriter(ConfigurationImpl configuration,
                                 DocPath filename, ClassTree classtree)
                                 throws IOException {
        super(configuration, filename);
        this.classtree = classtree;
    }

    
Add each level of the class tree. For each sub-class or
sub-interface indents the next level information.
Recurses itself to add subclasses info.

Params:
  • parent – the superclass or superinterface of the list
  • list – list of the sub-classes at this level
  • isEnum – true if we are generating a tree for enums
  • contentTree – the content tree to which the level information will be added
/**
     * Add each level of the class tree. For each sub-class or
     * sub-interface indents the next level information.
     * Recurses itself to add subclasses info.
     *
     * @param parent the superclass or superinterface of the list
     * @param list list of the sub-classes at this level
     * @param isEnum true if we are generating a tree for enums
     * @param contentTree the content tree to which the level information will be added
     */
    protected void addLevelInfo(ClassDoc parent, Collection<ClassDoc> list,
            boolean isEnum, Content contentTree) {
        if (!list.isEmpty()) {
            Content ul = new HtmlTree(HtmlTag.UL);
            for (ClassDoc local : list) {
                HtmlTree li = new HtmlTree(HtmlTag.LI);
                li.addStyle(HtmlStyle.circle);
                addPartialInfo(local, li);
                addExtendsImplements(parent, local, li);
                addLevelInfo(local, classtree.subs(local, isEnum),
                             isEnum, li);   // Recurse
                ul.addContent(li);
            }
            contentTree.addContent(ul);
        }
    }

    
Add the heading for the tree depending upon tree type if it's a
Class Tree or Interface tree.

Params:
  • list – List of classes which are at the most base level, all the
other classes in this run will derive from these classes
  • heading – heading for the tree
  • div – the content tree to which the tree will be added
/**
     * Add the heading for the tree depending upon tree type if it's a
     * Class Tree or Interface tree.
     *
     * @param list List of classes which are at the most base level, all the
     * other classes in this run will derive from these classes
     * @param heading heading for the tree
     * @param div the content tree to which the tree will be added
     */
    protected void addTree(SortedSet<ClassDoc> list, String heading, HtmlTree div) {
        if (!list.isEmpty()) {
            ClassDoc firstClassDoc = list.first();
            Content headingContent = getResource(heading);
            Content sectionHeading = HtmlTree.HEADING(HtmlConstants.CONTENT_HEADING, true,
                    headingContent);
            HtmlTree htmlTree;
            if (configuration.allowTag(HtmlTag.SECTION)) {
                htmlTree = HtmlTree.SECTION(sectionHeading);
            } else {
                div.addContent(sectionHeading);
                htmlTree = div;
            }
            addLevelInfo(!firstClassDoc.isInterface()? firstClassDoc : null,
                    list, list == classtree.baseEnums(), htmlTree);
            if (configuration.allowTag(HtmlTag.SECTION)) {
                div.addContent(htmlTree);
            }
        }
    }

    
Add information regarding the classes which this class extends or
implements.

Params:
  • parent – the parent class of the class being documented
  • cd – the classdoc under consideration
  • contentTree – the content tree to which the information will be added
/**
     * Add information regarding the classes which this class extends or
     * implements.
     *
     * @param parent the parent class of the class being documented
     * @param cd the classdoc under consideration
     * @param contentTree the content tree to which the information will be added
     */
    protected void addExtendsImplements(ClassDoc parent, ClassDoc cd,
            Content contentTree) {
        ClassDoc[] interfaces = cd.interfaces();
        if (interfaces.length > (cd.isInterface()? 1 : 0)) {
            Arrays.sort(interfaces);
            int counter = 0;
            for (ClassDoc intf : interfaces) {
                if (parent != intf) {
                    if (!(intf.isPublic() ||
                          utils.isLinkable(intf, configuration))) {
                        continue;
                    }
                    if (counter == 0) {
                        if (cd.isInterface()) {
                            contentTree.addContent(" (");
                            contentTree.addContent(getResource("doclet.also"));
                            contentTree.addContent(" extends ");
                        } else {
                            contentTree.addContent(" (implements ");
                        }
                    } else {
                        contentTree.addContent(", ");
                    }
                    addPreQualifiedClassLink(LinkInfoImpl.Kind.TREE,
                                             intf, contentTree);
                    counter++;
                }
            }
            if (counter > 0) {
                contentTree.addContent(")");
            }
        }
    }

    
Add information about the class kind, if it's a "class" or "interface".

Params:
  • cd – the class being documented
  • contentTree – the content tree to which the information will be added
/**
     * Add information about the class kind, if it's a "class" or "interface".
     *
     * @param cd the class being documented
     * @param contentTree the content tree to which the information will be added
     */
    protected void addPartialInfo(ClassDoc cd, Content contentTree) {
        addPreQualifiedStrongClassLink(LinkInfoImpl.Kind.TREE, cd, contentTree);
    }

    
Get the tree label for the navigation bar.

Returns:a content tree for the tree label
/**
     * Get the tree label for the navigation bar.
     *
     * @return a content tree for the tree label
     */
    protected Content getNavLinkTree() {
        Content li = HtmlTree.LI(HtmlStyle.navBarCell1Rev, treeLabel);
        return li;
    }
}