001/* java.beans.beancontext.BeanContextServiceAvailableEvent
002   Copyright (C) 1999 Free Software Foundation, Inc.
003
004This file is part of GNU Classpath.
005
006GNU Classpath is free software; you can redistribute it and/or modify
007it under the terms of the GNU General Public License as published by
008the Free Software Foundation; either version 2, or (at your option)
009any later version.
010
011GNU Classpath is distributed in the hope that it will be useful, but
012WITHOUT ANY WARRANTY; without even the implied warranty of
013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014General Public License for more details.
015
016You should have received a copy of the GNU General Public License
017along with GNU Classpath; see the file COPYING.  If not, write to the
018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
01902110-1301 USA.
020
021Linking this library statically or dynamically with other modules is
022making a combined work based on this library.  Thus, the terms and
023conditions of the GNU General Public License cover the whole
024combination.
025
026As a special exception, the copyright holders of this library give you
027permission to link this library with independent modules to produce an
028executable, regardless of the license terms of these independent
029modules, and to copy and distribute the resulting executable under
030terms of your choice, provided that you also meet, for each linked
031independent module, the terms and conditions of the license of that
032module.  An independent module is a module which is not derived from
033or based on this library.  If you modify this library, you may extend
034this exception to your version of the library, but you are not
035obligated to do so.  If you do not wish to do so, delete this
036exception statement from your version. */
037
038
039package java.beans.beancontext;
040
041import java.util.Iterator;
042
043/**
044 * Event fired when new services become available through a <code>BeanContextServices</code>.
045 *
046 * @author John Keiser
047 * @since JDK1.2
048 * @see java.beans.beancontext.BeanContextServicesListener
049 */
050
051public class BeanContextServiceAvailableEvent extends BeanContextEvent {
052       private static final long serialVersionUID = -5333985775656400778L;
053
054       /**
055         * The <code>Class</code> representing the service which is now
056         * available.
057         */
058        protected Class serviceClass;
059
060        /**
061         * Create a new service available event.
062         * @param services the <code>BeanContextServices</code> through
063         *        which the service is available.  This is also the source
064         *        of the event.
065         * @param serviceClass the service class that is now available.
066         */
067        public BeanContextServiceAvailableEvent(BeanContextServices services, Class serviceClass) {
068                super(services);
069                this.serviceClass = serviceClass;
070        }
071
072        /**
073         * Get the current service selectors of the service class.
074         * This is identical to <code>getSourceAsBeanContextServices().getCurrentServiceSelectors(getServiceClass())</code>
075         * @return the current service selectors of the service class.
076         */
077        public Iterator getCurrentServiceSelectors() {
078                return getSourceAsBeanContextServices().getCurrentServiceSelectors(serviceClass);
079        }
080
081        /**
082         * Get the newly available service class.
083         * @return the service class.
084         */
085        public Class getServiceClass() {
086                return serviceClass;
087        }
088
089        /**
090         * Get the <code>BeanContextServices</code> through which the new service is available.
091         * @return the <code>BeanContextServices</code> through which the
092         *         new service is available.
093         */
094        public BeanContextServices getSourceAsBeanContextServices() {
095                return (BeanContextServices)getSource();
096        }
097}