// sample.java
// Example of a CORBA client running as an applet

import java.awt.*;

public class sample extends java.applet.Applet {
  Button connect;
  Button query;
  TextArea area;
  int ROWS = 10, COLS = 20;
  org.omg.CORBA.ORB orb;
  Proxy.StreetRouter proxy;

  public void init() {
    setLayout( new BorderLayout() );
    add("North", area = new TextArea(ROWS, COLS));
    area.setText("Applet ready!!!, press connect and send the query\n");
    connect = new Button("Connect");
    query = new Button("Send Query");
    add("Center", connect);
    add("South", query);
  }         

  public boolean action (Event e, Object o) {
    if ( !(e.target instanceof Button) )
        return false;

    if ( ((String)o).equalsIgnoreCase("connect") ) {
        my_connect();
        return true;
    }

    if ( ((String)o).equalsIgnoreCase("Send Query") ) {
        my_send();
        return true;
    }

    return false;
  }
 
  public void my_connect () {
    area.setText("CONNECTING TO SERVER...\n");
    orb = org.omg.CORBA.ORB.init(this);
    area.appendText("ORB created...\n");

    // For security reasons,it is not possible to connect to other web
    // server rather than the initial one from you get the applet. In this example
    // the IOR (the server handler) is obtained from the same web server
    // that served the applet. If you want to use the InfoBus naming service
    // you want to make sure both, the InfoBus naming service and your applet,
    // are under the same web server space.

    proxy = Proxy.StreetRouterHelper.bind(orb,
              "http://Eel:15000/StreetRouterSimple.IOR");

    //proxy = Proxy.StreetRouterHelper.narrow(naming.GetObject(
    //        "dl/Services/Search","StreetRouterSimple",orb));

    area.appendText("PROXY CONTACTED:\n");
    area.appendText(proxy.toString());
    return;
  }

  public void my_send () {
    area.appendText("Sending this query to the server:\n");
    area.appendText("Directions from: Stanford, California \n");
    area.appendText("             to: Los Angeles, California \n");
    // Sending query to the server ....
    String directions = proxy.lookupdirections("Stanford",
                                               "California",
                                               "Los Angeles",
                                               "California");
    area.appendText(directions);
    area.appendText("DONE. \n");
    return;
  }

}