01: /*
02: * IzPack - Copyright 2001-2008 Julien Ponge, All Rights Reserved.
03: *
04: * http://izpack.org/
05: * http://izpack.codehaus.org/
06: *
07: * Copyright 2003 Tino Schwarze
08: *
09: * 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: public boolean validate(ProcessingClient client) {
38: int numfields = client.getNumFields();
39:
40: for (int i = 0; i < numfields; i++) {
41: String value = client.getFieldContents(i);
42:
43: if ((value == null) || (value.length() == 0))
44: return false;
45: }
46:
47: return true;
48: }
49:
50: }
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