1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package javax.faces.event;
20
21 import java.util.EventObject;
22 import javax.faces.context.FacesContext;
23
24 /**
25 * @since 2.0
26 */
27 public abstract class SystemEvent extends EventObject
28 {
29 private transient FacesContext facesContext;
30
31 public SystemEvent(Object source)
32 {
33 super(source);
34 }
35
36 public SystemEvent(FacesContext facesContext, Object source)
37 {
38 super(source);
39 this.facesContext = facesContext;
40 }
41
42 public boolean isAppropriateListener(FacesListener listener)
43 {
44 return listener instanceof SystemEventListener;
45 }
46
47 public void processListener(FacesListener listener)
48 {
49 ((SystemEventListener) listener).processEvent(this);
50 }
51
52 /**
53 * @since 2.3
54 */
55 public FacesContext getFacesContext()
56 {
57 if (facesContext == null)
58 {
59 facesContext = FacesContext.getCurrentInstance();
60 }
61 return facesContext;
62 }
63 }