1 /**************************************************************
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
6  * regarding copyright ownership.  The ASF licenses this file
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
15  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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 
24 /** base class for components validating the content of form controls
25  *
26  * @author  fs@openoffice.org
27  */
28 public abstract class ControlValidator implements com.sun.star.form.validation.XValidator
29 {
30 
31     /** Creates a new instance of ControlValidator */
ControlValidator()32     public ControlValidator()
33     {
34     }
35 
addValidityConstraintListener(com.sun.star.form.validation.XValidityConstraintListener xValidityConstraintListener)36     public void addValidityConstraintListener(com.sun.star.form.validation.XValidityConstraintListener xValidityConstraintListener)
37     {
38     }
39 
removeValidityConstraintListener(com.sun.star.form.validation.XValidityConstraintListener xValidityConstraintListener)40     public void removeValidityConstraintListener(com.sun.star.form.validation.XValidityConstraintListener xValidityConstraintListener)
41     {
42     }
43 
isVoid( Object Value )44     protected boolean isVoid( Object Value )
45     {
46         try
47         {
48             return ( com.sun.star.uno.AnyConverter.getType(Value).getTypeClass()
49                      == com.sun.star.uno.TypeClass.VOID );
50         }
51         catch( java.lang.ClassCastException e )
52         {
53         }
54         return false;
55     }
56 }
57