squawkhost.java

无线传感器网络节点Sun SPOT管理工具

/*
 * Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved. 
 * 
 * Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product that is
 * described in this document. In particular, and without limitation, these intellectual property rights may
 * include one or more of the U.S. patents listed at http://www.sun.com/patents and one or more additional patents
 * or pending patent applications in the U.S. and in other countries.
 * 
 * U.S. Government Rights - Commercial software. Government users are subject to the Sun Microsystems, Inc.
 * standard license agreement and applicable provisions of the FAR and its supplements.
 * 
 * Use is subject to license terms. 
 * 
 * This distribution may include materials developed by third parties. Sun, Sun Microsystems, the Sun logo and
 * Java are trademarks or registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. 
 * 
 * Copyright (c) 2006 Sun Microsystems, Inc. Tous droits r?serv?s.
 * 
 * Sun Microsystems, Inc. d?tient les droits de propri?t? intellectuels relatifs ? la technologie incorpor?e dans
 * le produit qui est d?crit dans ce document. En particulier, et ce sans limitation, ces droits de propri?t?
 * intellectuelle peuvent inclure un ou plus des brevets am?ricains list?s ? l'adresse http://www.sun.com/patents
 * et un ou les brevets suppl?mentaires ou les applications de brevet en attente aux Etats - Unis et dans les
 * autres pays.
 * 
 * L'utilisation est soumise aux termes du contrat de licence.
 * 
 * Cette distribution peut comprendre des composants d?velopp?s par des tierces parties.
 * Sun, Sun Microsystems, le logo Sun et Java sont des marques de fabrique ou des marques d?pos?es de Sun
 * Microsystems, Inc. aux Etats-Unis et dans d'autres pays.
 */

package com.sun.spot.spotworld.participants;

//import com.sun.spot.spotworld.gui.RemotePrintHandler;
import com.sun.spot.spotworld.virtualobjects.VirtualObject;
import java.util.Vector;
import org.sunspotworld.remoteprinting.RemotePrintHandler;

/**
 * Proxy for some SquwkVM running out there. Currently only used as a superclass.
 *
 * @author taylorr
 */
abstract public class SquawkHost extends VirtualObject {
    
    private Vector<RemotePrintHandler> remotePrintHandlers = new Vector<RemotePrintHandler>();
    
    private Vector<String> availableAppsCache;
    private String address;
        
    
    public String getUniqueID(){ return getAddress(); }
    
    /*        Available Applications         */
    
     public void flushAvailableAppsCache(){
         availableAppsCache = null;
     }
     
     public Vector<String> getAvailableApps() {
         if(availableAppsCache == null){
             refillAvailableAppsCache();
         }
         return availableAppsCache;
     }
     
     /* Kind of a hack -- callers of this method should probably not really be 
      * ignoring the package portion of the name 
      */
     public Vector<String> getAvailableAppClassNamesOnly() {
         Vector<String> apps = getAvailableApps();
         Vector<String> reply = new Vector<String>();
         for(String s : apps){ 
             String[] tokens = s.split("\\.");  
             reply.add(tokens[tokens.length - 1]);
         }
         return reply;
     }
      
     /* subclasses must override as appopriate, this is a no-op */
     public void refillAvailableAppsCache(){
         setAvailableAppsCache(new Vector<String>());
     }
     
     public void setAvailableAppsCache(Vector<String> v){
         availableAppsCache = v;
     }
 
     public String getName(){
         return getClass().getSimpleName() + ":" + getAddress();
     }
    
    abstract public void startApp(String className);

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    /**** access to the remotePrintHandler collection for this device ***/
    
    public void addRemotePrintHandler(RemotePrintHandler rph) {
        remotePrintHandlers.add(rph);
    }
    
    public void removeRemotePrintHandler(RemotePrintHandler rph) {
        remotePrintHandlers.remove(rph);
    }
    
    public Vector<RemotePrintHandler> getRemotePrintHandlersCopy(){ 
        return (Vector<RemotePrintHandler>) remotePrintHandlers.clone();
    }
}