Chatprogramm-Text/src/chatprogramm/controller/ConnectController.java

package chatprogramm.controller;

import chatprogramm.model.Transmitter;
import chatprogramm.logger.OhmLogger;
import chatprogramm.view.ChatView;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.logging.Logger;
import javax.swing.JOptionPane;

/**
 *
 * @author Marian
 */
public class ConnectController implements ActionListener
{
    private Transmitter model;
    private ChatView view;
    private static Logger logger = OhmLogger.getLogger();
    
    public ConnectController(Transmitter model, ChatView view)
    {
        this.model = model;
        this.view = view;
    }
    
    public void registerEvents()
    {
        this.view.getBtConnect().addActionListener(this);
        this.view.getRbClient().addActionListener(this);
        this.view.getRbServer().addActionListener(this);
    }
    
    @Override
    public void actionPerformed(ActionEvent ae)
    {
        Object object = ae.getSource();
        
        if (object == view.getBtConnect()) 
        {
            int port = -1;

            try {
                port = Integer.parseInt(view.getTfPort().getText());
            } catch (NumberFormatException e) {
                JOptionPane.showMessageDialog(view, "Port ungültig! Muss eine Zahl sein");
                logger.severe(e.toString());
                return;
            }

            if (view.getRbClient().isSelected() && (validIP(view.getTfIP().getText()) == false)) {
                JOptionPane.showMessageDialog(view, "Ungültige IP-Adresse!");
                logger.severe("IP-Adresse ungültig");
                return;
            }
            
            model.connectToPeer(view.getRbServer().isSelected(), view.getTfIP().getText(), port);
            
            view.getRbClient().setEnabled(false);
            view.getRbServer().setEnabled(false);
            view.getTfIP().setEnabled(false);
            view.getTfPort().setEnabled(false);
        }         
    }
    
    private boolean validIP (String ip) 
    {
        try 
        {
            if (ip == null || ip.isEmpty()) 
            {
                return false;
            }

            String[] parts = ip.split("\\.");
            if ( parts.length != 4 ) 
            {
                return false;
            }

            for (String s : parts) 
            {
                int i = Integer.parseInt(s);
                if ((i < 0) || (i > 255)) 
                {
                    return false;
                }
            }
            if (ip.endsWith(".")) 
            {
                return false;
            }

            return true;
        } 
        catch (NumberFormatException e) 
        {
            logger.severe(e.toString());
            return false;
        }
    }
}