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 import com.sun.star.form.binding.*;
25 
26 /**
27  *
28  * @author  fs@openoffice.org
29  */
30 public class NumericValidator extends ControlValidator
31 {
32 
33     /** Creates a new instance of NumericValidator */
NumericValidator( )34     public NumericValidator( )
35     {
36     }
37 
explainInvalid( Object Value )38     public String explainInvalid( Object Value )
39     {
40         try
41         {
42             double value = ((Double)Value).doubleValue();
43             if ( Double.compare( Double.NaN, value ) == 0 )
44                 return "This is NotANumber";
45             if ( !isProperRange( value ) )
46                 return "The value must be between 0 and 100";
47             if ( !isProperDigitCount( value ) )
48                 return "The value must have at most one decimal digit";
49         }
50         catch( java.lang.Exception e )
51         {
52             return "This is no valid number";
53         }
54         return "";
55     }
56 
isValid( Object Value )57     public boolean isValid( Object Value )
58     {
59         try
60         {
61             double value = ((Double)Value).doubleValue();
62             if ( Double.compare( Double.NaN, value ) == 0 )
63                 return false;
64             if ( !isProperRange( value ) )
65                 return false;
66             if ( !isProperDigitCount( value ) )
67                 return false;
68             return true;
69         }
70         catch( java.lang.Exception e )
71         {
72         }
73         return false;
74     }
75 
isProperRange( double value)76     private boolean isProperRange( double value)
77     {
78         return ( value >= 0 ) && ( value <= 100 );
79     }
80 
isProperDigitCount( double value)81     private boolean isProperDigitCount( double value)
82     {
83         return ( java.lang.Math.floor( value * 10 ) == value * 10 );
84     }
85 }
86