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package uk.ac.ukc.iscream.conient; |
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//---PACKAGE DECLARATION--- |
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package uk.org.iscream.cms.conient; |
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//---IMPORTS--- |
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import javax.swing.JProgressBar; |
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import javax.swing.JPanel; |
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import javax.swing.JLabel; |
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import javax.swing.BoxLayout; |
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import javax.swing.SwingUtilities; |
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public class PacketTimer extends JProgressBar implements Runnable { |
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/** |
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* Shows a countdown timer for packet arrival times. |
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* When constructed it takes an integer value relating |
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* to the time in seconds between recieving packets. |
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* |
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* This then displays a JProgress bar which updates at |
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* 10th of a second intervals. |
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* |
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* It currently is adjusted by the addition of 1 second |
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* to account for the possibility of network delay. |
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* |
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* @author $Author$ |
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* @version $Id$ |
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*/ |
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public class PacketTimer extends JPanel implements Runnable { |
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public PacketTimer(int timeBetweenPackets) { |
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super(JProgressBar.VERTICAL, 0, timeBetweenPackets * 10); |
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//---FINAL ATTRIBUTES--- |
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/** |
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* The current CVS revision of this class |
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*/ |
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public static final String REVISION = "$Revision$"; |
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//---STATIC METHODS--- |
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//---CONSTRUCTORS--- |
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/** |
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* Constructs a new PacketTimer |
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* |
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* @param timeBetweenPackets the time in seconds between packet arrival |
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*/ |
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public PacketTimer(String name, int timeBetweenPackets) { |
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_timeBetweenPackets = timeBetweenPackets * 10; |
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setMaximum(_timeBetweenPackets); |
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_progressBar = new JProgressBar(JProgressBar.HORIZONTAL, 0, _timeBetweenPackets); |
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this.setLayout(new BoxLayout(this, BoxLayout.Y_AXIS)); |
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JLabel label = new JLabel(name); |
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this.add(_progressBar); |
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this.add(label); |
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} |
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//---PUBLIC METHODS--- |
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/** |
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* Updates the progress bar every 10th of a second. |
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*/ |
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public void run() { |
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while(running) { |
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while(_running) { |
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try { |
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Thread.sleep(100); |
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} catch (InterruptedException e) { |
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SwingUtilities.invokeLater(new Runnable() { |
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public void run() { |
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PacketTimer.this.setValue(PacketTimer.this.getValue() - 1); |
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_progressBar.setValue(_progressBar.getValue() - 1); |
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} |
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}); |
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} |
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} |
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/** |
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* Resets the progress bar. |
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*/ |
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public void reset() { |
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SwingUtilities.invokeLater(new Runnable() { |
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public void run() { |
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PacketTimer.this.setValue(_timeBetweenPackets); |
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_progressBar.setValue(_timeBetweenPackets); |
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} |
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}); |
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} |
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//---PRIVATE METHODS--- |
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//---ACCESSOR/MUTATOR METHODS--- |
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//---ATTRIBUTES--- |
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/** |
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* Holds the time between packets as used internally by this class |
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*/ |
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private int _timeBetweenPackets; |
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private boolean running = true; |
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/** |
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* Used to indicate the state of the thread |
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*/ |
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private boolean _running = true; |
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private JProgressBar _progressBar; |
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//---STATIC ATTRIBUTES--- |
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} |
