ctlsigdisplay.java

java communications api 3.0

/*
 * @(#)CtlSigDisplay.java	1.5 00/05/04 SMI
 * 
 * Author: Tom Corson
 * 
 * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 * 
 * 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.awt.Panel;
import java.awt.Label;
import java.awt.Color;
import java.awt.FlowLayout;
import javax.comm.ParallelPort;

/**
 * Class declaration
 *
 *
 * @author
 * @version 1.5, 05/04/00
 */
public class CtlSigDisplay extends Panel {
    ParallelPort  port = null;
    Label	  SELLabel, BSYLabel, TOLabel, PELabel, POLabel, BELabel;
    boolean       DA, BE;
    private Color onColor, offColor;

    /**
     * Constructor declaration
     *
     *
     * @param port
     *
     * @see
     */
    public CtlSigDisplay(ParallelPort port) {
	super();

	this.setPort(port);
	this.setLayout(new FlowLayout());

	SELLabel = new Label("SEL");

	this.add(SELLabel);

	BSYLabel = new Label("BSY");

	this.add(BSYLabel);

	TOLabel = new Label("TO");

	this.add(TOLabel);

	PELabel = new Label("PE");

	this.add(PELabel);

	POLabel = new Label("PO");

	this.add(POLabel);

	DA = false;
	BELabel = new Label("BE");

	this.add(BELabel);

	BE = true;
	onColor = Color.green;
	offColor = Color.black;
    }

    /**
     * Method declaration
     *
     *
     * @param port
     *
     * @see
     */
    public void setPort(ParallelPort port) {
	this.port = port;
    } 

    /**
     * Method declaration
     *
     *
     * @see
     */
    public void showValues() {
	if (this.port != null) {

	    /*
	     * Get the state of the control signals for this port
	     */
	    SELLabel.setForeground(port.isPrinterSelected() ? onColor 
				   : offColor);
	    BSYLabel.setForeground(port.isPrinterBusy() ? onColor : offColor);
	} 
    } 

    /**
     * Method declaration
     *
     *
     * @see
     */
    public void showErrorValues() {
	if (this.port != null) {

	    /*
	     * Get the state of the error conditions for this port
	     */
	    TOLabel.setForeground(port.isPrinterTimedOut() ? onColor 
				  : offColor);
	    PELabel.setForeground(port.isPrinterError() ? onColor : offColor);
	    POLabel.setForeground(port.isPaperOut() ? onColor : offColor);
	    BELabel.setForeground(BE ? onColor : offColor);
	} 
    } 

    /**
     * Method declaration
     *
     *
     * @see
     */
    public void clearValues() {
	SELLabel.setForeground(offColor);
	BSYLabel.setForeground(offColor);
    } 

    /**
     * Method declaration
     *
     *
     * @see
     */
    public void clearErrorValues() {
	TOLabel.setForeground(offColor);
	PELabel.setForeground(offColor);
	POLabel.setForeground(offColor);
	BELabel.setForeground(offColor);
    } 

}