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Java > Open Source Codes > com > izforge > izpack > util > NotEmptyValidator


1 /*
2  * IzPack - Copyright 2001-2007 Julien Ponge, All Rights Reserved.
3  *
4  * http://www.izforge.com/izpack/
5  * http://developer.berlios.de/projects/izpack/
6  *
7  * Copyright 2003 Tino Schwarze
8  *
9  * Licensed under the Apache License, Version 2.0 (the "License");
10  * you may not use this file except in compliance with the License.
11  * You may obtain a copy of the License at
12  *
13  * http://www.apache.org/licenses/LICENSE-2.0
14  *
15  * Unless required by applicable law or agreed to in writing, software
16  * distributed under the License is distributed on an "AS IS" BASIS,
17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18  * See the License for the specific language governing permissions and
19  * limitations under the License.
20  */
21
22 package com.izforge.izpack.util;
23
24 import com.izforge.izpack.panels.ProcessingClient;
25 import com.izforge.izpack.panels.Validator;
26
27 /**
28  * A validator to enforce non-empty fields.
29  *
30  * This validator can be used for rule input fields in the UserInputPanel to make sure that the user
31  * entered something.
32  *
33  * @author tisc
34  */
35 public class NotEmptyValidator implements Validator
36 {
37
38     public boolean validate(ProcessingClient client)
39     {
40         int numfields = client.getNumFields();
41
42         for (int i = 0; i < numfields; i++)
43         {
44             String JavaDoc value = client.getFieldContents(i);
45
46             if ((value == null) || (value.length() == 0)) return false;
47         }
48
49         return true;
50     }
51
52 }
53
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