/*

 * Copyright (c) 2020, 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 sun.security.util;

/**

 * This class implements an event model with services for reporter and listener.

 * Reporter uses report() method to generate an event.

 * Listener uses setReportListener() to register for listening to an event,

 * and uses clearReportListener() to unregister a listening session.

 * Listener should implement the event handling of the Reporter interface.

 */

public final class Event {

    private Event() {}

    public enum ReporterCategory {

        CRLCHECK(),

        ZIPFILEATTRS();

        private Reporter reporter;

    }

    public interface Reporter {

        public void handle(String type, Object... args);

    }

    public static void setReportListener(ReporterCategory cat, Reporter re) {

        cat.reporter = re;

    }

    public static void clearReportListener(ReporterCategory cat) {

        cat.reporter = null;

    }

    public static void report(ReporterCategory cat, String type, Object... args) {

        Reporter currentReporter = cat.reporter;

        if (currentReporter != null) {

            currentReporter.handle(type, args);

        }

    }

}