flightinfosubscriber.java

来自「《移动Agent技术》一书的所有章节源代码。」· Java 代码 · 共 99 行

/* FlightInfoSubscriber.java
 * $Id: FlightInfoSubscriber.java,v 2.3 1997-11-19 19:22:41+09 ht Exp $ $Name: alpha5_1-release $
 */

package com.ibm.acl.kqmlsample.travel;

import java.util.*;
import java.awt.TextArea;
import com.ibm.acl.kqml.*;

// add notify dialog
import java.awt.Frame;
import java.awt.Color;

/**
 * 
 *
 * @version     $Revision: 2.3 $ $Date: 1997-11-19 19:22:41+09 $
 * @author      Hajime Tsuchitani
 * @author      Osamu  Furusawa
 */
public class FlightInfoSubscriber extends Subscriber{
  private static final String rcsid = "$Id: FlightInfoSubscriber.java,v 2.3 1997-11-19 19:22:41+09 ht Exp $ $Name: alpha5_1-release $";

  /**
   * variable description goes here
   */
  private boolean forever = false;

  private long timeout;
  
  private Frame frame;  

  private Conversation conv = null;
  
  // flag  for text color change  
  private boolean delayFlag = false;

  //private Object textArea = null;

  public FlightInfoSubscriber(Conversation conv, Object textArea) {
    super(conv, textArea, 0);
  }

  public FlightInfoSubscriber(Conversation conv, Object textArea, long timeout) {
    super(conv, textArea, timeout);
  }
  
  public FlightInfoSubscriber(Conversation conv, Object textArea, Frame frame) {
    super(conv, textArea, 0);
    this.frame = frame;
  }

  public synchronized boolean handleResult(ReturnValue rtn, Object textArea) {
    System.err.println("> FlightInfoSubscriber.handleResult entered");
    if (rtn.getReturnValue() instanceof Vector) {

      Vector flightsInfo = (Vector)rtn.getReturnValue();

      if (flightsInfo.size() == 0) return false;

      FlightInfo flightInfo = (FlightInfo) flightsInfo.elementAt(0);
      String flight = 
	new String("Carrier:" + flightInfo.getCarrier() +
		   " Flight:" + flightInfo.getFlight()      +"\n"+ 
		   "Departure:" + flightInfo.getDeparture() +"\n"+
		   "Arrival:" + flightInfo.getArrival()     +"\n"+
		   "DeptTime : " + flightInfo.getDeptTime()
		   );

      System.err.println("FlightInfoSubscriber.handleResult");
      System.err.println(flight);


        String oldSchedule = new String( ((TextArea)textArea).getText() );
        if ( oldSchedule == null) {
            ((TextArea) textArea).setText(flight);      
        } else if ( ! oldSchedule.equals(flight) ) {
            ((TextArea) textArea).setText(flight);
            if (delayFlag == false) 
                ((TextArea) textArea).setForeground(Color.red);
            else 
                ((TextArea) textArea).setForeground(Color.black);    
            delayFlag = !delayFlag;
            PersonalAssistNotifyDialog diag = new PersonalAssistNotifyDialog(frame);
            diag.start();
        }
        return true;
    }
    return false;
  }
}