cloud.gui.DistributionSelectionActionListener.java Source code

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Here is the source code for cloud.gui.DistributionSelectionActionListener.java

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/**
 * Copyright 2011 Amir Moulavi (amir.moulavi@gmail.com)
 *
 *    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.
 */
package cloud.gui;

import logger.Logger;
import logger.LoggerFactory;
import org.apache.commons.io.FileUtils;
import statistics.distribution.DistributionName;

import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.IOException;
import java.util.List;

/**
 * 
 * @author Amir Moulavi
 * @date 2011-04-02
 *
 */

public class DistributionSelectionActionListener implements ActionListener {

    private CloudGUI gui;
    private Logger logger;

    public DistributionSelectionActionListener(CloudGUI cloudGUI) {
        this.gui = cloudGUI;
        logger = LoggerFactory.getLogger(CloudGUI.class, gui);
    }

    @SuppressWarnings("static-access")
    @Override
    public void actionPerformed(ActionEvent e) {
        String name = (String) gui.getDistributions().getSelectedItem();
        if (DistributionName.EXPONENTIAL.getName().equals(name)) {
            gui.decorateExponentialDistribution();
        } else if (DistributionName.UNIFORM.getName().equals(name)) {
            gui.decorateForUniformDistribution();
        } else if (DistributionName.CONSTANT.getName().equals(name)) {
            gui.decorateForConstantDistribution();
        } else if (DistributionName.CUSTOM.getName().equals(name)) {
            JFileChooser fileChooser = new JFileChooser();
            int returnVal = fileChooser.showOpenDialog(gui);
            if (returnVal == fileChooser.APPROVE_OPTION) {
                File file = fileChooser.getSelectedFile();
                try {
                    List<String> lines = FileUtils.readLines(file);
                    boolean result = validate(lines);
                    if (!result) {
                        gui.decorateForInValidDistribution();
                        logger.error("Invalid Distribution file " + file.getName());
                    } else {
                        gui.decorateForCustomDistribution(lines);
                        logger.info("File " + file.getName() + " is imported to generate the distribution from");
                    }
                } catch (IOException e1) {
                    e1.printStackTrace();
                }
            } else {
                gui.getDistributions().setSelectedIndex(0);
                gui.decorateForUniformDistribution();
            }
        }
    }

    private boolean validate(List<String> lines) {
        if (lines.size() == 0)
            return false;
        for (String line : lines) {
            try {
                Integer.parseInt(line.trim());
            } catch (Exception e) {
                return false;
            }
        }
        return true;
    }

}