01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: *
17: */
18:
19: package org.apache.tools.ant.input;
20:
21: import java.util.Vector;
22:
23: /**
24: * Encapsulates an input request.
25: *
26: * @since Ant 1.5
27: */
28: public class MultipleChoiceInputRequest extends InputRequest {
29: private Vector choices = new Vector();
30:
31: /**
32: * @param prompt The prompt to show to the user. Must not be null.
33: * @param choices holds all input values that are allowed.
34: * Must not be null.
35: */
36: public MultipleChoiceInputRequest(String prompt, Vector choices) {
37: super (prompt);
38: if (choices == null) {
39: throw new IllegalArgumentException(
40: "choices must not be null");
41: }
42: this .choices = choices;
43: }
44:
45: /**
46: * @return The possible values.
47: */
48: public Vector getChoices() {
49: return choices;
50: }
51:
52: /**
53: * @return true if the input is one of the allowed values.
54: */
55: public boolean isInputValid() {
56: return choices.contains(getInput())
57: || ("".equals(getInput()) && getDefaultValue() != null);
58: }
59: }
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