package class10_1_RemoteProxy; // MSOE. Dr. Yoder. 10 February 2016.

//
// CounterFrame.java: sample client of counter class
//

import java.rmi.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

class CounterClient extends JFrame implements ActionListener
{
    private JButton incrButton  = new JButton("Increment");
    private JButton exitButton  = new JButton("Exit");

    // updatable field
    private IntField xcount = new IntField();

    private CounterService remoteCounter;      // remote counter

    public CounterClient()
    {
        super("Counter Frame");
        setSize(650, 400); // larger than needed; resizing done below

        xcount.setText("5");

        int counterValue = 0;
        // set up the remote counter and read it
        try
        {
            System.out.println("Connecting...");
            String serverObjectName = "rmi://"
                    + CounterServiceImpl.ServiceHost + ":"
                    + CounterServiceImpl.ServicePort + "/"
                    + CounterServiceImpl.ServiceName;
            remoteCounter = (CounterService)Naming.lookup(serverObjectName);
            counterValue = remoteCounter.value();
        }
        catch ( Exception e )
        {
            System.out.println("Exception: " + e.getMessage());
            e.printStackTrace();
            return;
        }

        // a bit of magic to halt the application if the user closes the window
        addWindowListener(
                new WindowAdapter() {
                    public void windowClosing(WindowEvent event) { System.exit(0); }
                });

        // main box; everything placed in this
        JPanel box = new JPanel();
        box.setLayout(new BoxLayout(box, BoxLayout.Y_AXIS));
        getContentPane().add(box);

        // set up tool bar; notice buttons placed left to right against right
        //    edge
        JPanel toolbar = new JPanel();
        toolbar.setLayout(new FlowLayout(FlowLayout.RIGHT));
        incrButton.addActionListener(this);
        toolbar.add(incrButton);
        exitButton.addActionListener(this);
        toolbar.add(exitButton);
        box.add(toolbar, BorderLayout.NORTH);

        // create labels and fields
        xcount.setText("0");
        //xcount.setEditable(false);

        JLabel xcountName = new JLabel("Counter", JLabel.RIGHT);

        JPanel dataPanel = new JPanel();
        dataPanel.setLayout(new GridLayout(2, 2, 5, 5));

        dataPanel.add(xcountName);
        dataPanel.add(xcount);
        box.add(dataPanel);

        JPanel responsePanel = new JPanel();
        responsePanel.setLayout(new GridLayout(1, 2, 5, 5));
        box.add(responsePanel);

        // resize frame
        pack();

        xcount.setText(Integer.toString(counterValue));
    }

    public void actionPerformed(ActionEvent event)
    {
        // handle event
        if ( event.getSource() == incrButton )
            incrButtonClick();
        else if ( event.getSource() == exitButton )
            System.exit(0);
    }

    private void incrButtonClick()
    {
        incrementField(xcount);
    }

    private void incrementField(IntField fld)
    {
        try
        {
            remoteCounter.increment();
            int val = remoteCounter.value();
            fld.setText(Integer.toString(val));
        }
        catch ( Exception e )
        {
            System.out.println("Exception: " + e.getMessage());
            e.printStackTrace();
            return;
        }
    }

    public static void main(String[] args)
    {
        CounterClient sample = new CounterClient();
        sample.setVisible(true);
    }
}