/**
 Class for a rectangular box to be drawn on the screen. 
 Because each character is higher than it is wide, these
 boxes will look higher than you might expect. Inherits
 getOffset, setOffset, and drawAt from the class Figure.
*/
public class Box extends Figure
{
    private int height;
    private int width;
    
    public Box( )
    {
        super( );
        height = 0;
        width = 0;
    }
    
    public Box(int theOffset, int theHeight, int theWidth)
    {
        super(theOffset);
        height = theHeight;
        width = theWidth;
    }
    
    public void reset(int newOffset, int newHeight, int newWidth)
    {
        setOffset(newOffset);
        height = newHeight;
        width = newWidth;
    }
    
    /**
     Draws the figure at the current line.
    */
    public void drawHere( )
    {
        drawHorizontalLine( );
        drawSides( );
        drawHorizontalLine( );
    }

    private void drawHorizontalLine( )
    {
        spaces(getOffset( )); 
        int count; 
        for (count = 0; count < width; count++)
             System.out.print('-');
        System.out.println( );        
    }
    
    private void drawSides( )
    {
        int count;
        for (count = 0; count < (height - 2); count++)
            drawOneLineOfSides( );
    }
    
    private void drawOneLineOfSides( )
    {
        spaces(getOffset( )); 
        System.out.print('|');
        spaces(width - 2);        
        System.out.println('|');
    }
    
    //Writes the indicated number of spaces.
    private static void spaces(int number)
    {
        int count; 
        for (count = 0; count < number; count++)
            System.out.print(' ');
    }
}