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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.trinidad.change;
20  
21  import javax.faces.component.NamingContainer;
22  import javax.faces.component.UIComponent;
23  import javax.faces.context.FacesContext;
24  
25  /**
26   * An ChangeManager implementation that is all a no-op.
27   *
28   */
29  public class NullChangeManager extends ChangeManager
30  {
31    /**
32     * {@inheritDoc}
33     */
34    @Override
35    public void addComponentChange(
36      FacesContext facesContext,
37      UIComponent uiComponent,
38      ComponentChange change)
39    {
40      // do nothing
41    }
42  
43    /**
44     * {@inheritDoc}
45     * @param facesContext The FacesContext instance for the current request.
46     */
47    @Override
48    public void applyComponentChangesForCurrentView(FacesContext facesContext)
49    {
50      //no-op
51    }
52  
53    /**
54     * {@inheritDoc}
55     */
56    @Override
57    public void applyComponentChangesForSubtree(
58      FacesContext facesContext,
59      NamingContainer root
60      )
61    {
62      //no-op
63    }
64  
65    /**
66     * {@inheritDoc}
67     */
68    @Override
69    public void applySimpleComponentChanges(FacesContext context, UIComponent component)
70    {
71      //no-op
72    }
73  }