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GridLocation-5.java
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GridLocation-5.java
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import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import javax.swing.JPanel;
import javax.swing.border.LineBorder;
/**
* Represents a single grid location (i.e., one row/column position)
* Within a 2D grid in a Graphical User Interface (GUI)
*/
public class GridLocation extends JPanel
{
private static final int WIDTH = 50;
private static final int HEIGHT = 50;
protected int row;
protected int col;
protected Color backgroundColor;
/**
* Creates a new grid position at a specific location within the grid
* with a white background color
*
* @param r, the row
* @param c, the column
*/
public GridLocation(int r, int c)
{
setBorder(new LineBorder(Color.BLACK));
row = r;
col = c;
backgroundColor = Color.WHITE;
setBackground(backgroundColor);
}
/**
* @return int
*/
public int getRow()
{
return row;
}
/**
* @return int
*/
public int getColumn()
{
return col;
}
/**
* Changes the background color of this location
*
* @param color
*/
public void setBackgroundColor(Color color)
{
backgroundColor = color;
setBackground(backgroundColor);
repaint();
}
/**
* Simple String representation of this location's row and column
*
* @return String as (row, col)
*/
@Override
public String toString()
{
return "(" + row + ", " + col +")";
}
/**
* Determines if two (presumably GridLocations) are same
* That is same row and column.
*
* @param o, some other Object (presumably a GridLocation) to compare with
*
* @return boolean
*/
@Override
public boolean equals(Object o)
{
if (o == null)
return false;
if (o == this)
return true;
if (!(o instanceof GridLocation))
return false;
GridLocation other = (GridLocation)o;
return row == other.row && col == other.col;
}
/**
* This method is used to help ensure that the size
* of the grid location is always a very specific size<br>
* YOU DO NOT NEED TO WORRY ABOUT THIS METHOD OR CALL IT EVER
*/
@Override
public Dimension getPreferredSize()
{
return new Dimension(WIDTH, HEIGHT);
}
}