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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
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 * 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
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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.
/**
 * 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);
        }
    }
}