/* * @(#)Transmitter.java	1.12 98/06/25 SMI * * Author: Tom Corson * * Copyright (c) 1998 Sun Microsystems, Inc. All Rights Reserved. * * Sun grants you ("Licensee") a non-exclusive, royalty free, license  * to use, modify and redistribute this software in source and binary * code form, provided that i) this copyright notice and license appear * on all copies of the software; and ii) Licensee does not utilize the * software in a manner which is disparaging to Sun. * * This software is provided "AS IS," without a warranty of any kind. * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND * ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY * LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THE * SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS * BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, * HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING * OUT OF THE USE OF OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN * ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. * * This software is not designed or intended for use in on-line control * of aircraft, air traffic, aircraft navigation or aircraft * communications; or in the design, construction, operation or * maintenance of any nuclear facility. Licensee represents and * warrants that it will not use or redistribute the Software for such * purposes. */import java.lang.Thread;import java.io.IOException;import java.awt.Panel;import java.awt.Label;import java.awt.TextArea;import java.awt.Checkbox;import java.awt.Color;import java.awt.BorderLayout;import java.awt.FlowLayout;import java.awt.event.TextListener;import java.awt.event.TextEvent;import java.awt.event.ItemListener;import java.awt.event.ItemEvent;import javax.comm.SerialPort;public class Transmitter extends Panel implements TextListener, ItemListener, Runnable{	private Panel			p,					p1,					p2;	private TextArea		text;	private Checkbox		auto,					sendBreak;	private ByteStatistics		counter;	private SerialPortDisplay	owner;	private	Thread			thr;	private Color			onColor,					offColor;	private boolean			first,					modemMode;	static  String			testString = "ABCDEFGHIJKLMNOPQRSTUVWXYZ\nabcdefghijklmnopqrstuvwxyz\n1234567890\n";			public Transmitter(SerialPortDisplay	owner,			   int			rows,			   int			cols)	{		super();		this.first = true;		this.modemMode = false;		this.owner = owner;		this.setLayout(new BorderLayout());		p = new Panel();		p.setLayout(new FlowLayout());		p1 = new Panel();		p1.setLayout(new BorderLayout());		p1.add("West", new Label("Auto Transmit"));		auto = new Checkbox();		auto.addItemListener(this);		p1.add("East", auto);		p.add(p1);		p2 = new Panel();		p2.setLayout(new BorderLayout());		p2.add("West", new Label("Send Break"));		sendBreak = new Checkbox();		sendBreak.addItemListener(this);		p2.add("East", sendBreak);		p.add(p2);		this.add("North", p);		this.text = new TextArea(rows, cols);		this.text.append("Type here");		this.text.addTextListener(this);		this.add("Center", text);		this.counter = new ByteStatistics("Bytes Sent", 10, 						  owner.port, false);		this.add("South", this.counter);		this.thr = null;		this.onColor = Color.green;		this.offColor = Color.black;	}	public Transmitter(SerialPortDisplay	owner,			   int			rows,			   int			cols,			   boolean		modemMode)	{		this(owner, rows, cols);		this.modemMode = modemMode;	}	public void setPort(SerialPort	port)	{		this.counter.setPort(port);	}	public void showValues()	{		this.counter.showValues();	}	public void clearValues()	{		this.counter.clearValues();	}	public void setBitsPerCharacter(int	val)	{		this.counter.setBitsPerCharacter(val);	}	/*	 *	Handler for transmit text area events	 */	public void textValueChanged(TextEvent	ev)	{		if (first && (this.text.getCaretPosition() > 0))		{			first = false;			this.text.replaceRange("", 					       0, 					       this.text.getCaretPosition()						 - 1);		}		if (!first)		{			this.sendData();		}	}	public void run()	{		this.sendData();	}	public void sendString(String 	str)	{		int	count;		count = str.length();		if (count > 0)		{			try			{				owner.out.write(str.getBytes());					counter.incrementValue((long) count);					owner.ctlSigs.BE = false;					owner.ctlSigs.showErrorValues();			}				catch (IOException ex)			{				if (owner.open)				{					System.out.println(owner.port.getName() 							   + ": Cannot write to output stream");						this.auto.setState(false);				}			}		}	}	private void sendData()	{		String	str;		if (this.owner.open && this.auto.getState())		{			while (this.owner.open && this.auto.getState())			{				sendString(testString);			}		}		else		{			str = this.text.getText();			sendString(str);			this.text.setText("");		}	} 	/*	 *	Handler for checkbox events	 */	public void itemStateChanged(ItemEvent	ev)	{		if (this.auto.getState() && (thr == null) && this.owner.open)		{			this.auto.setForeground(this.onColor);			startTransmit();		}		else		{			stopTransmit();		}		if (this.sendBreak.getState())		{			if (this.owner.open)			{				this.sendBreak.setForeground(this.onColor);				/*				 *  Send a 1000 millisecond break.				 */					owner.port.sendBreak(1000);			}			this.sendBreak.setState(false);			this.sendBreak.setForeground(this.offColor);		}	}	private void startTransmit()	{		if (thr == null);		{			counter.resetRate();			thr = new Thread(this, "Xmt " + owner.port.getName());			thr.start();		}	}	public void stopTransmit()	{		thr = null;		this.auto.setState(false);		this.auto.setForeground(this.offColor);	}}