import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;
import javax.swing.*;

/**
 * @author emi-lind
 *
 */
public class MailSender extends JFrame
{
	private JTextField 	_serverField;
	private JTextField 	_fromField;
	private JTextField 	_toField;
	private JTextField 	_subjectField;
	private JTextArea 	_messageArea;
	private JButton 	_sendButton;
	
	
	
	/**
	 * @param args not used
	 */
	public static void main(String[] args) 
	{
		new MailSender();
	}
	
	public MailSender()
	{
		super("Mail Sender 1.0");
		setSize(600,350);
		setVisible(true);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		// Create GUI
		int fieldLength = 20;
		_serverField = new JTextField(fieldLength );
		_serverField.setText(System.getProperty("mail.host", "").toString());
		_fromField = new JTextField(fieldLength );
		_fromField.setText(System.getProperty("mail.from", "").toString());
		_toField = new JTextField(fieldLength );
		_subjectField = new JTextField(fieldLength );
		_messageArea = new JTextArea();
		_sendButton = new JButton("Send");
		
		JPanel northPanel = new JPanel();
		northPanel.setLayout(new GridLayout(2, 2));
		
		JPanel tmp = new JPanel(new FlowLayout(FlowLayout.LEFT));
		tmp.add(new JLabel("Server:"));
		tmp.add(_serverField);
		northPanel.add(tmp);
		
		tmp = new JPanel(new FlowLayout(FlowLayout.LEFT));
		tmp.add(new JLabel("From:"));
		tmp.add(_fromField);
		northPanel.add(tmp);
		
		tmp = new JPanel(new FlowLayout(FlowLayout.LEFT));
		tmp.add(new JLabel("Subject:"));
		tmp.add(_subjectField);
		northPanel.add(tmp);
		
		tmp = new JPanel(new FlowLayout(FlowLayout.LEFT));
		tmp.add(new JLabel("To:"));
		tmp.add(_toField);
		northPanel.add(tmp);
		
		Container c = getContentPane();
		c.add(_messageArea, BorderLayout.CENTER);
		c.add(_sendButton, BorderLayout.SOUTH);
		c.add(northPanel, BorderLayout.NORTH);

		validate();
		
		_sendButton.addActionListener(new ActionListener()
		{
			@Override
			public void actionPerformed(ActionEvent aev)
			{
				try
				{
					// Send e-mail
			
					Properties props = new Properties();
					props.put("mail.host", _serverField.getText().trim());
					
					Session mailConnection = Session.getInstance(props, null);
					final Message msg = new MimeMessage(mailConnection);
		
					msg.setContent(_messageArea.getText(), "text/plain");
					msg.setFrom(new InternetAddress(_fromField.getText().trim()));
					msg.setRecipient(Message.RecipientType.TO, new InternetAddress(_toField.getText().trim()));
					msg.setSubject(_subjectField.getText());
					
					_sendButton.setText("Sending...");
					Transport.send(msg);
					
					_sendButton.setText("Send");
					_messageArea.setText("");
					
				}
				catch (Exception exc)
				{
					System.out.println(exc);
				}
			}
		});
	}
}