spottextexternalwindow.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.gui;

import com.sun.spot.spotworld.common.LocaleUtil;
import java.awt.Dimension;
import java.awt.Point;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.PrintStream;
import javax.microedition.io.Connector;
import javax.microedition.io.StreamConnection;
import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

/**
 *
 * @author randy
 */
public class SPOTTextExternalWindow extends JFrame implements IPrintStreamFactory {
    
    public SPOTTextExternalWindow() {
        init();
    }
      
    JTextArea textArea;
    JScrollPane jsp;
    DataInputStream dataIn;
    
    public void init(){
        setResizable(true);
       // setClosable(true);
        // Robert 6/11/2006: changed this to false. Causes weird errors.
       // setMaximizable(false);
        
        textArea = new JTextArea(5,20);
        textArea.setBorder(BorderFactory.createEmptyBorder(0,5,0,0));
        textArea.setEditable(true);
        
        jsp = new JScrollPane(textArea);
        setContentPane(jsp);
        
        setPreferredSize(new Dimension(450,300));
        
        //Desperation attempts to make the component visible.
        setSize(new Dimension(500,300));
        setVisible(true);
        validate();
    }
    
    public void startReadThread(final String url){
        Runnable r = new Runnable(){
            public void run(){
                int rowCount = 0;
                try {
                    StreamConnection conn = (StreamConnection) Connector.open(url);
                    dataIn = conn.openDataInputStream();
                } catch (IOException ioe) {}
                while(true){
                    try {
                        String s = dataIn.readUTF();
                        append(s);
                    } catch(IOException e){
                        e.printStackTrace();
                    }
                }
            }
        };
        (new Thread(r)).start();
    }
    
    public void append(String text){     
        textArea.append(text);
        jsp.getViewport().setViewPosition(new Point(0, textArea.getHeight()));
        
        //int lines = textArea.getLineCount();
        
    }
    
    // Added method to allow System.out to be redirected to this TextWindow --Robert
    public PrintStream makePrintStream() {
        return new PrintStream(new TextAreaOutputStream(textArea));
    }

}