/* $Id: saslookup.java,v 1.3 2002/09/09 05:39:09 parasuraman Exp $ */
/*
 * @(#)saslookup.java
 * Copyright (c) 2012 ZOHO Corp. All Rights Reserved.
 * Please read the associated COPYRIGHTS file for more details.
 */
/**
 * This Applet does Address and Name Lookup.
 */
import java.applet.*;
import java.lang.*;
import java.awt.*;
import java.awt.event.*;
import com.adventnet.snmp.snmp2.*;

public class saslookup extends Applet implements ActionListener {
	
	TextArea text;
	TextField nameField, addressField, timeoutField;
	Button nameButton, addressButton;
	SASClient sasclient;
	
	public void init() {
		
		text = new TextArea( 10, 20);
		text.setEditable(false);
		Label nameLabel = new Label("HostName : ");
		Label addressLabel = new Label("Address  : ");
		Label timeoutLabel = new Label("Timeout  : ");
		Label unitLabel = new Label("MilliSeconds");
		nameField = new TextField(20);
		addressField = new TextField(20);
		timeoutField = new TextField("2000", 20);
		nameButton = new Button("Address Lookup");
		nameButton.addActionListener(this);
		addressButton = new Button("  Name Lookup  ");
		addressButton.setActionCommand("Name Lookup");
		addressButton.addActionListener(this);
		
		GridBagLayout gridbag = new GridBagLayout();
		GridBagConstraints gc = new GridBagConstraints();
		Panel northPanel = new Panel();
		northPanel.setLayout(gridbag);
		
		gc.gridx = 0;
		gc.gridy = 0;
		gc.insets = new Insets(0, 0, 0, 0);
		gridbag.setConstraints(nameLabel, gc);
		northPanel.add(nameLabel);
		
		gc.gridx = 1;
		gc.gridy = 0;
		gc.insets = new Insets(0, 5, 0, 0);
		gridbag.setConstraints(nameField, gc);
		northPanel.add(nameField);
		
		gc.gridx = 2;
		gc.gridy = 0;
		gc.insets = new Insets(0, 5, 0, 0);
		gridbag.setConstraints(nameButton, gc);
		northPanel.add(nameButton);
		
		gc.gridx = 0;
		gc.gridy = 1;
		gc.insets = new Insets(5, 0, 0, 0);
		gridbag.setConstraints(addressLabel, gc);
		northPanel.add(addressLabel);
		
		gc.gridx = 1;
		gc.gridy = 1;
		gc.insets = new Insets(5, 5, 0, 0);
		gridbag.setConstraints(addressField, gc);
		northPanel.add(addressField);
		
		gc.gridx = 2;
		gc.gridy = 1;
		gc.insets = new Insets(5, 5, 0, 0);
		gridbag.setConstraints(addressButton, gc);
		northPanel.add(addressButton);
		
		gc.gridx = 0;
		gc.gridy = 2;
		gc.insets = new Insets(5, 0, 5, 0);
		gridbag.setConstraints(timeoutLabel, gc);
		northPanel.add(timeoutLabel);
		
		gc.gridx = 1;
		gc.gridy = 2;
		gc.insets = new Insets(5, 5, 5, 0);
		gridbag.setConstraints(timeoutField, gc);
		northPanel.add(timeoutField);
		
		gc.gridx = 2;
		gc.gridy = 2;
		gc.insets = new Insets(5, 0, 5, 0);
		gridbag.setConstraints(unitLabel, gc);
		northPanel.add(unitLabel);
		
		Panel southPanel = new Panel();
		Button clearButton = new Button("Clear");
		southPanel.add(clearButton);
		clearButton.addActionListener(this);
		setLayout(new BorderLayout());
		add("North", northPanel);
		add("Center", text);
		add("South", southPanel);
		
		try {
			sasclient = new SASClient(this, false);
			sasclient.start();
		}
		catch(SnmpException se) {
			text.append("Error : " + se.getMessage() + "\n");
		}
		//SASClient is null if not connected to SAServer
		if(sasclient == null) {
			nameButton.setEnabled(false);
			addressButton.setEnabled(false);
		}
	}
	
	public void actionPerformed(ActionEvent e) {
		
		if(e.getActionCommand().equals("Address Lookup")) {
			int timeout = 0;
			try {
				timeout = Integer.parseInt(timeoutField.getText());
			}
			catch (Exception ex) {
				text.append("Invalid timeout. Default Timeout(2 Secs.) is set.\n");
			}
			try {
				String address = sasclient.getHostAddress(nameField.getText(), timeout);
				text.append(nameField.getText() + ":" + address + "\n");
			}
			catch (Exception ex) {
				text.append("Address Lookup failed. " + nameField.getText() + "\n");
			}
		}
		else if(e.getActionCommand().equals("Name Lookup")) {
			int timeout = 0;
			try {
				timeout = Integer.parseInt(timeoutField.getText());
			}
			catch (Exception ex) {
				text.append("Invalid timeout. Default Timeout(2 Secs.) is set.\n");
			}
			try {
				String name = sasclient.getHostName(addressField.getText(), timeout);
				text.append(name + ":" + addressField.getText() + "\n");
			}
			catch (Exception ex) {
				text.append("Address Lookup failed. " + addressField.getText() + "\n");
			}
		}
		else if(e.getActionCommand().equals("Clear")) {
			text.setText("");
		}	
	}
	
	public void stop() {
		
		sasclient.stop();
		sasclient = null;
	}
	
}