/*

 * Copyright (c) 1997, 2013, 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.

 */

/*

 * The Original Code is HAT. The Initial Developer of the

 * Original Code is Bill Foote, with contributions from others

 * at JavaSoft/Sun.

 */

package com.sun.tools.hat.internal.server;

import com.sun.tools.hat.internal.model.*;

import com.sun.tools.hat.internal.util.ArraySorter;

import com.sun.tools.hat.internal.util.Comparer;

import java.util.Enumeration;

/**

 *

 * @author      Bill Foote

 */

class ClassQuery extends QueryHandler {

    public ClassQuery() {

    }

    public void run() {

        startHtml("Class " + query);

        JavaClass clazz = snapshot.findClass(query);

        if (clazz == null) {

            error("class not found: " + query);

        } else {

            printFullClass(clazz);

        }

        endHtml();

    }

    protected void printFullClass(JavaClass clazz) {

        out.print("<h1>");

        print(clazz.toString());

        out.println("</h1>");

        out.println("<h2>Superclass:</h2>");

        printClass(clazz.getSuperclass());

        out.println("<h2>Loader Details</h2>");

        out.println("<h3>ClassLoader:</h3>");

        printThing(clazz.getLoader());

        out.println("<h3>Signers:</h3>");

        printThing(clazz.getSigners());

        out.println("<h3>Protection Domain:</h3>");

        printThing(clazz.getProtectionDomain());

        out.println("<h2>Subclasses:</h2>");

        JavaClass[] sc = clazz.getSubclasses();

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

            out.print("    ");

            printClass(sc[i]);

            out.println("<br>");

        }

        out.println("<h2>Instance Data Members:</h2>");

        JavaField[] ff = clazz.getFields().clone();

        ArraySorter.sort(ff, new Comparer() {

            public int compare(Object lhs, Object rhs) {

                JavaField left = (JavaField) lhs;

                JavaField right = (JavaField) rhs;

                return left.getName().compareTo(right.getName());

            }

        });

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

            out.print("    ");

            printField(ff[i]);

            out.println("<br>");

        }

        out.println("<h2>Static Data Members:</h2>");

        JavaStatic[] ss = clazz.getStatics();

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

            printStatic(ss[i]);

            out.println("<br>");

        }

        out.println("<h2>Instances</h2>");

        printAnchorStart();

        print("instances/" + encodeForURL(clazz));

        out.print("\">");

        out.println("Exclude subclasses</a><br>");

        printAnchorStart();

        print("allInstances/" + encodeForURL(clazz));

        out.print("\">");

        out.println("Include subclasses</a><br>");

        if (snapshot.getHasNewSet()) {

            out.println("<h2>New Instances</h2>");

            printAnchorStart();

            print("newInstances/" + encodeForURL(clazz));

            out.print("\">");

            out.println("Exclude subclasses</a><br>");

            printAnchorStart();

            print("allNewInstances/" + encodeForURL(clazz));

            out.print("\">");

            out.println("Include subclasses</a><br>");

        }

        out.println("<h2>References summary by Type</h2>");

        printAnchorStart();

        print("refsByType/" + encodeForURL(clazz));

        out.print("\">");

        out.println("References summary by type</a>");

        printReferencesTo(clazz);

    }

    protected void printReferencesTo(JavaHeapObject obj) {

        if (obj.getId() == -1) {

            return;

        }

        out.println("<h2>References to this object:</h2>");

        out.flush();

        Enumeration referers = obj.getReferers();

        while (referers.hasMoreElements()) {

            JavaHeapObject ref = (JavaHeapObject) referers.nextElement();

            printThing(ref);

            print (" : " + ref.describeReferenceTo(obj, snapshot));

            // If there are more than one references, this only gets the

            // first one.

            out.println("<br>");

        }

        out.println("<h2>Other Queries</h2>");

        out.println("Reference Chains from Rootset");

        long id = obj.getId();

        out.print("<ul><li>");

        printAnchorStart();

        out.print("roots/");

        printHex(id);

        out.print("\">");

        out.println("Exclude weak refs</a>");

        out.print("<li>");

        printAnchorStart();

        out.print("allRoots/");

        printHex(id);

        out.print("\">");

        out.println("Include weak refs</a></ul>");

        printAnchorStart();

        out.print("reachableFrom/");

        printHex(id);

        out.print("\">");

        out.println("Objects reachable from here</a><br>");

    }

}