led.java

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//LED
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Led extends JPanel{
  Image leds[] = new Image[4];  
  public static final boolean OFF = false;
  public static final boolean ON = true;
  public static final boolean BLUE = false;
  public static final boolean YELLOW = true;
  private static final int howManyLedsAre=18;
  public static int ledWidth; //Width of the led image
  public static int ledHeight; //Height of the led image
  private int thisLedNumber;
  public static boolean ledsOnPortViewerArrayState[] = new boolean[howManyLedsAre];
  public static boolean ledsOnPortViewerArrayColor[] = new boolean[howManyLedsAre];
  public static boolean ledsOnPortViewerArrayIsActive[] = new boolean[howManyLedsAre];
  private UpdateLed updateLed = new UpdateLed();
  private static final int ledUpdateDelay = 100;
  
  public Led(int coordinateXOnParent,int coordinateYOnParent,int thisLedNumber,String toolTip){
    InitLed();  
    setThisLedNumber(thisLedNumber);
    setLedLocation(coordinateXOnParent,coordinateYOnParent);
    setToolTipText(toolTip);
  }
  private void InitLed(){
    for (int i=0;i<=3;i++){
      leds[i] = new ImageIcon(getClass().getResource("Leds/"+i+".gif")).getImage();   
    }
    ledWidth = leds[0].getWidth(this);
    ledHeight = leds[0].getHeight(this);
    setPreferredSize(new Dimension(ledWidth,ledHeight));    
    setOpaque(false);
    setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
    addMouseListener(new MouseFunctions());
    updateLed.start();
  }

  private class MouseFunctions extends MouseAdapter{
    public void mousePressed(MouseEvent e){
      if (e.getButton()==MouseEvent.BUTTON1){
        if (ledsOnPortViewerArrayIsActive[thisLedNumber]==true) ledsOnPortViewerArrayState[thisLedNumber]=(!ledsOnPortViewerArrayState[thisLedNumber]);
      }
    }
  }
  
  public void setThisLedNumber(int thisLedNumber){
    this.thisLedNumber=thisLedNumber;  
  }
  public void setLedLocation(int coordinateXOnParent,int coordinateYOnParent){  
    setBounds(coordinateXOnParent,coordinateYOnParent,ledWidth,ledHeight);
  }
  public void paintComponent(Graphics g){
    super.paintComponent(g);  
    drawLed(g);
  }
  private void drawLed(Graphics g){
    g.drawImage(leds[((ledsOnPortViewerArrayColor[thisLedNumber]==YELLOW)?0:2)+((ledsOnPortViewerArrayState[thisLedNumber]==ON)?1:0)],0,0,this);
  }

  private class UpdateLed extends Thread{
    boolean ledTemp;
    public void run(){
      ledTemp = ledsOnPortViewerArrayState[thisLedNumber];  
      while(true){
        if (ledTemp != ledsOnPortViewerArrayState[thisLedNumber]){
          if (getParent()!=null) getParent().repaint();
          repaint();
          ledTemp = ledsOnPortViewerArrayState[thisLedNumber];
        }
        if (thisLedNumber==0){
          if (ledsOnPortViewerArrayState[0]==false) dataOutColors();   
          if (ledsOnPortViewerArrayState[0]==true) dataInColors();   
          if (getParent()!=null) getParent().repaint();
          repaint();
        }
        try{Thread.sleep(ledUpdateDelay);}catch(InterruptedException e){}  
      }
    }
  }
  
  private void dataInColors(){
    ledsOnPortViewerArrayIsActive[0] = ledsOnPortViewerArrayColor[0] = true;
    ledsOnPortViewerArrayIsActive[1] = ledsOnPortViewerArrayColor[1] = true;
    ledsOnPortViewerArrayIsActive[2] = ledsOnPortViewerArrayColor[2] = false;
    ledsOnPortViewerArrayIsActive[3] = ledsOnPortViewerArrayColor[3] = false;
    ledsOnPortViewerArrayIsActive[4] = ledsOnPortViewerArrayColor[4] = false;
    ledsOnPortViewerArrayIsActive[5] = ledsOnPortViewerArrayColor[5] = false;
    ledsOnPortViewerArrayIsActive[6] = ledsOnPortViewerArrayColor[6] = false;
    ledsOnPortViewerArrayIsActive[7] = ledsOnPortViewerArrayColor[7] = false;
    ledsOnPortViewerArrayIsActive[8] = ledsOnPortViewerArrayColor[8] = false;
    ledsOnPortViewerArrayIsActive[9] = ledsOnPortViewerArrayColor[9] = false;
    ledsOnPortViewerArrayIsActive[10] = ledsOnPortViewerArrayColor[10] = false;
    ledsOnPortViewerArrayIsActive[11] = ledsOnPortViewerArrayColor[11] = false;
    ledsOnPortViewerArrayIsActive[12] = ledsOnPortViewerArrayColor[12] = false;
    ledsOnPortViewerArrayIsActive[13] = ledsOnPortViewerArrayColor[13] = false;
    ledsOnPortViewerArrayIsActive[14] = ledsOnPortViewerArrayColor[14] = true;
    ledsOnPortViewerArrayIsActive[15] = ledsOnPortViewerArrayColor[15] = false;
    ledsOnPortViewerArrayIsActive[16] = ledsOnPortViewerArrayColor[16] = true;
    ledsOnPortViewerArrayIsActive[17] = ledsOnPortViewerArrayColor[17] = true;
  }
  private void dataOutColors(){
    ledsOnPortViewerArrayIsActive[0] = ledsOnPortViewerArrayColor[0] = true;
    ledsOnPortViewerArrayIsActive[1] = ledsOnPortViewerArrayColor[1] = true;
    ledsOnPortViewerArrayIsActive[2] = ledsOnPortViewerArrayColor[2] = true;
    ledsOnPortViewerArrayIsActive[3] = ledsOnPortViewerArrayColor[3] = true;
    ledsOnPortViewerArrayIsActive[4] = ledsOnPortViewerArrayColor[4] = true;
    ledsOnPortViewerArrayIsActive[5] = ledsOnPortViewerArrayColor[5] = true;
    ledsOnPortViewerArrayIsActive[6] = ledsOnPortViewerArrayColor[6] = true;
    ledsOnPortViewerArrayIsActive[7] = ledsOnPortViewerArrayColor[7] = true;
    ledsOnPortViewerArrayIsActive[8] = ledsOnPortViewerArrayColor[8] = true;
    ledsOnPortViewerArrayIsActive[9] = ledsOnPortViewerArrayColor[9] = true;
    ledsOnPortViewerArrayIsActive[10] = ledsOnPortViewerArrayColor[10] = false;
    ledsOnPortViewerArrayIsActive[11] = ledsOnPortViewerArrayColor[11] = false;
    ledsOnPortViewerArrayIsActive[12] = ledsOnPortViewerArrayColor[12] = false;
    ledsOnPortViewerArrayIsActive[13] = ledsOnPortViewerArrayColor[13] = false;
    ledsOnPortViewerArrayIsActive[14] = ledsOnPortViewerArrayColor[14] = true;
    ledsOnPortViewerArrayIsActive[15] = ledsOnPortViewerArrayColor[15] = false;
    ledsOnPortViewerArrayIsActive[16] = ledsOnPortViewerArrayColor[16] = true;
    ledsOnPortViewerArrayIsActive[17] = ledsOnPortViewerArrayColor[17] = true;
  }
}