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 org.apache.myfaces.shared.el;
20
21 import javax.faces.component.StateHolder;
22 import javax.faces.context.FacesContext;
23 import javax.faces.el.EvaluationException;
24 import javax.faces.el.MethodBinding;
25 import javax.faces.el.MethodNotFoundException;
26
27 /**
28 * Convenient method binding that does nothing other than returning a fixed outcome String when invoked.
29 */
30 public class SimpleActionMethodBinding
31 extends MethodBinding
32 implements StateHolder
33 {
34 private String _outcome;
35
36 public SimpleActionMethodBinding(String outcome)
37 {
38 _outcome = outcome;
39 }
40
41 public Object invoke(FacesContext facescontext, Object aobj[]) throws EvaluationException, MethodNotFoundException
42 {
43 return _outcome;
44 }
45
46 public Class getType(FacesContext facescontext) throws MethodNotFoundException
47 {
48 return String.class;
49 }
50
51
52 //~ StateHolder support ----------------------------------------------------------------------------
53
54 private boolean _transient = false;
55
56 /**
57 * Empty constructor, so that new instances can be created when restoring state.
58 */
59 public SimpleActionMethodBinding()
60 {
61 _outcome = null;
62 }
63
64 public Object saveState(FacesContext facescontext)
65 {
66 return _outcome;
67 }
68
69 public void restoreState(FacesContext facescontext, Object obj)
70 {
71 _outcome = (String)obj;
72 }
73
74 public boolean isTransient()
75 {
76 return _transient;
77 }
78
79 public void setTransient(boolean flag)
80 {
81 _transient = flag;
82 }
83
84 public String toString()
85 {
86 return _outcome;
87 }
88 }