package Sorter;
import java.awt.*;

/**
 * A decorated ordering strategy that temporarily changes the color of the compared objects.   
 * The objects are assumed to be of type IColoredObject
 */
public class GraphicOrder extends AOrder
{
	/**
	 * The color to temporarily switch the compared objects to.
	 */
	private Color compareColor = Color.red;
    /**
	 * The number of milliseconds to pause while the objects are set to the compare color.
	 */
	private int waitTime = 200;
	/**
	 * The decorated ordering strategy--the "decoree".
	 */
	private AOrder aOrder;
	/**
	 * The constructor for this class.
	 * @param compareColor The color to change the objects to.
	 * @param waitTime The amount of time to pause (sleep) after changing the color.
	 * @param aOrder The decoree.
	 */
	public GraphicOrder(Color compareColor, int waitTime, AOrder aOrder)
	{
		this.compareColor = compareColor;
		this.waitTime = waitTime;
		this.aOrder = aOrder;
	}

	/**
	 * Calls blink(x,y) and then delegates to the decoree.
	 * @param x 
	 * @param y 
	 * @return 
	 */
	public boolean eq(Object x, Object y)
	{
		blink((IColoredObject) x, (IColoredObject) y);
		return (aOrder.eq(x,y));
	}

	/**
	 * Calls blink(x,y) and then delegates to the decoree.
	 * @return 
	 */
	public boolean ne(Object x, Object y)
	{
		blink((IColoredObject) x, (IColoredObject) y);
		return (aOrder.ne(x,y));
	}

	/**
	 * Calls blink(x,y) and then delegates to the decoree.
	 * @return 
	 */
	public boolean lt(Object x, Object y)
	{
		blink((IColoredObject) x, (IColoredObject) y);
		return (aOrder.lt(x,y));
	}

	/**
	 * Calls blink(x,y) and then delegates to the decoree.
	 * @return 
	 */
	public boolean le(Object x, Object y)
	{
		blink((IColoredObject) x, (IColoredObject) y);
		return (aOrder.le(x,y));
	}

	/**
	 * Calls blink(x,y) and then delegates to the decoree.
	 * @return 
	 */
	public boolean gt(Object x, Object y)
	{
		blink((IColoredObject) x, (IColoredObject) y);
		return (aOrder.gt(x,y));
	}

	/**
	 * Calls blink(x,y) and then delegates to the decoree.
	 * @return 
	 */
	public boolean ge(Object x, Object y)
	{
		blink((IColoredObject) x, (IColoredObject) y);
		return (aOrder.ge(x,y));

	}

	/**
	 * Changes the color of xIGC and yIGC to the compareColor, sleeps for waitTime milliseconds and then changes the colors back to their original state.
	 * 
	 * @param xIGC 
	 * @param yIGC 
	 */
	protected void blink(IColoredObject xIGC, IColoredObject yIGC)
	{
        		Color thisColor = xIGC.getColor();
		        Color thatColor = yIGC.getColor();

		        yIGC.setColor(compareColor);
		        xIGC.setColor(compareColor);

		        try
		        {
			        Thread.sleep(waitTime);
		        }
		        catch(Exception e) {}

		        yIGC.setColor(thatColor);
		        xIGC.setColor(thisColor);
	}

	/**
	 * An accessor method for compareColor.
	 * @param compareColor 
	 */
	public void setCompareColor(Color compareColor)
	{
		this.compareColor = compareColor;
	}

	/**
	 * An accessor method for the waitTime
	 * @param waitTime 
	 */
	public void setWaitTime(int waitTime)
	{
		this.waitTime = waitTime;
	}

	/**
	 * An accessor method for the decoree.
	 * @param aOrder 
	 * @SBGen Method set aOrder
	 */
	public void setOrder(AOrder aOrder)
	{
		// SBgen: Assign variable
		this.aOrder = aOrder;
	}
}