AskUtils.java
// @formatter:off
/*******************************************************************************
*
* This file is part of JMad.
*
* Copyright (c) 2008-2011, CERN. All rights reserved.
*
* Licensed 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.
*
******************************************************************************/
// @formatter:on
package cern.accsoft.steering.util.gui;
import javax.swing.JOptionPane;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Some util-methods for simple user interaction.
*
* @author Kajetan Fuchsberger (kajetan.fuchsberger at cern.ch)
*/
public class AskUtils {
private final static Logger logger = LoggerFactory.getLogger(AskUtils.class);
/**
* private constructor, no instantiation
*/
private AskUtils() {
// only static methods
}
/**
* a rather simple method to ask the user for a double value
*
* @param message
* @param initValue
* @return
*/
public final static Double askDouble(String message, Double initValue) {
String input = JOptionPane.showInputDialog(message, initValue);
try {
Double doubleValue = Double.parseDouble(input);
return doubleValue;
} catch (NumberFormatException e) {
logger.warn("Could not convert user input '" + input + "' to a double value!");
return null;
}
}
}