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2  *
3  * Licensed to the Apache Software Foundation (ASF) under one
4  * or more contributor license agreements.  See the NOTICE file
5  * distributed with this work for additional information
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7  * to you under the Apache License, Version 2.0 (the
8  * "License"); you may not use this file except in compliance
9  * with the License.  You may obtain a copy of the License at
10  *
11  *   http://www.apache.org/licenses/LICENSE-2.0
12  *
13  * Unless required by applicable law or agreed to in writing,
14  * software distributed under the License is distributed on an
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16  * KIND, either express or implied.  See the License for the
17  * specific language governing permissions and limitations
18  * under the License.
19  *
20  *************************************************************/
21 
22 
23 package integration.forms;
24 
25 /** base class for components validating the content of form controls
26  *
27  * @author  fs@openoffice.org
28  */
29 public abstract class ControlValidator implements com.sun.star.form.validation.XValidator
30 {
31 
32     /** Creates a new instance of ControlValidator */
ControlValidator()33     public ControlValidator()
34     {
35     }
36 
addValidityConstraintListener(com.sun.star.form.validation.XValidityConstraintListener xValidityConstraintListener)37     public void addValidityConstraintListener(com.sun.star.form.validation.XValidityConstraintListener xValidityConstraintListener)
38     {
39     }
40 
removeValidityConstraintListener(com.sun.star.form.validation.XValidityConstraintListener xValidityConstraintListener)41     public void removeValidityConstraintListener(com.sun.star.form.validation.XValidityConstraintListener xValidityConstraintListener)
42     {
43     }
44 
isVoid( Object Value )45     protected boolean isVoid( Object Value )
46     {
47         try
48         {
49             return ( com.sun.star.uno.AnyConverter.getType(Value).getTypeClass()
50                      == com.sun.star.uno.TypeClass.VOID );
51         }
52         catch( java.lang.ClassCastException e )
53         {
54         }
55         return false;
56     }
57 }
58