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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.tools.ant.input;
import java.util.LinkedHashSet;
import java.util.Vector;
/**
* Encapsulates an input request.
*
* @since Ant 1.5
*/
public class MultipleChoiceInputRequest extends InputRequest {
private final LinkedHashSet<String> choices;
/**
* @param prompt The prompt to show to the user. Must not be null.
* @param choices holds all input values that are allowed.
* Must not be null.
*/
public MultipleChoiceInputRequest(String prompt, Vector<String> choices) {
super(prompt);
if (choices == null) {
throw new IllegalArgumentException("choices must not be null");
}
this.choices = new LinkedHashSet<String>(choices);
}
/**
* @return The possible values.
*/
public Vector<String> getChoices() {
return new Vector<String>(choices);
}
/**
* @return true if the input is one of the allowed values.
*/
public boolean isInputValid() {
return choices.contains(getInput()) || ("".equals(getInput()) && getDefaultValue() != null);
}
}
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