WordCountWindow.java

package com.cheesekeg.wordcount.gui;

import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

import com.cheesekeg.wordcount.WordCount;

/**
 * @author Brandon DeRosier
 * @since 0.1
 * @version 0.1
 */
public class WordCountWindow extends JFrame {

    private static final long serialVersionUID = 1L;

    private JLabel inputLabel, outputLabel;
    private JTextArea inputArea, outputArea;
    private JButton button;

    /**
     * Construct a new WordCountWindow.
     */
    public WordCountWindow() {
        populateGUI();

        //pack(); // Automatically size the window.

        addWindowListener(new WindowAdapter() {

            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }

        });

        setVisible(true); // Make the window visible.
    }

    /**
     * Initialize and apply elements to the window.
     */
    private void populateGUI() {
        setResizable(false);
        setSize(590, 570);

        setLayout(new FlowLayout());

        // Initialize the labels.
        inputLabel = new JLabel("Input:", JLabel.CENTER);
        outputLabel = new JLabel("Output:", JLabel.CENTER);

        // Initialize the TextAreas
        inputArea = new JTextArea(15, 50);
        outputArea = new JTextArea(15, 50);

        inputArea.setEditable(true);
        outputArea.setEditable(false);

        // Initialize scroll panes to encapsulate the text areas.
        JScrollPane inputScrollPane = new JScrollPane(inputArea,
                JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
        JScrollPane outputScrollPane = new JScrollPane(outputArea,
                JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);

        // Initialize the button.
        button = new JButton("Sort by frequency");

        button.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                System.out.println("Sorting button pressed!");
                outputArea.setText(WordCount.CountWordString(inputArea.getText()));
            }

        });

        // Add the elements to the window.
        add(inputLabel);
        add(inputScrollPane);
        add(outputLabel);
        add(outputScrollPane);
        add(button);
    }

}