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Java > Open Source Codes > org > apache > myfaces > custom > savestate > UISaveState


1 /*
2  * Copyright 2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package org.apache.myfaces.custom.savestate;
17
18 import javax.faces.component.UIParameter;
19 import javax.faces.context.FacesContext;
20 import javax.faces.el.ValueBinding;
21
22 /**
23  * This component defines a model value (via the "value" attribute),
24  * of which the state has to be saved and restored by the StateRenderer.
25  * @author Manfred Geiler (latest modification by $Author: matze $)
26  * @version $Revision: 1.3 $ $Date: 2004/10/13 11:50:57 $
27  */
28 public class UISaveState
29     extends UIParameter
30 {
31     public Object JavaDoc saveState(FacesContext context)
32     {
33         Object JavaDoc values[] = new Object JavaDoc[2];
34         values[0] = super.saveState(context);
35         values[1] = getValue();
36         return ((Object JavaDoc) (values));
37     }
38
39     public void restoreState(FacesContext context, Object JavaDoc state)
40     {
41         Object JavaDoc values[] = (Object JavaDoc[])state;
42         super.restoreState(context, values[0]);
43         Object JavaDoc value = values[1];
44         ValueBinding vb = getValueBinding("value");
45         if (vb != null)
46         {
47             vb.setValue(context, value);
48         }
49     }
50
51     //------------------ GENERATED CODE BEGIN (do not modify!) --------------------
52
53     public static final String JavaDoc COMPONENT_TYPE = "org.apache.myfaces.SaveState";
54     public static final String JavaDoc COMPONENT_FAMILY = "javax.faces.Parameter";
55
56
57     public UISaveState()
58     {
59     }
60
61     public String JavaDoc getFamily()
62     {
63         return COMPONENT_FAMILY;
64     }
65
66
67     //------------------ GENERATED CODE END ---------------------------------------
68 }
69
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