SudokuBoard_E

package csc143.sudoku;

import javax.swing.*;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

/**
 * @author Vita Wiebe
 * @version PA2
 * A class to make a SudokuBoard.
 */
public class SudokuBoard extends JPanel
   implements SelectedCell {

    // Our class fields.

    private int rows;
    private int columns;

    // These are associated with methods of SelectedCell interface
    int selectedRow;
    int selectedColumn;

    // "Size"  is how many cells are in the Sudoku board, total.
    private int size;

    // Kept package private so can be accessed by both Region and SudokuBoard.
    SudokuStub b;

    // The building blocks of our board.
    Region region;

    /** Our class constructor.
     * @param SudokuBase b.
     *
     */
    public SudokuBoard(SudokuBase b) {

        // Gets the number of rows and columns from the SudokuBase/Stub object b passed to our constructor.
        rows = b.getRows();
        columns = b.getColumns();
        size = b.getSize();


        // Instantiate b, our SudokuStub/Base object, SudokuBoard's sole parameter and underlying element.
        this.b = new SudokuStub(rows, columns);

        // Determine the layout scheme of the overall board structure.
        setLayout(new GridLayout(rows, columns, 2, 2));

        // Iterate thru loops and populate our SudokuBoard with Regions from the Region helper class.
        for (int row = 0; row < rows; row++) {

            for (int col = 0; col < columns; col++) {

               // make new region with Region class and add to board.
               region = new Region(this.b);
               // This determines whether region gets shading or not.
               // I wrote it in if/else if form rather than using || so that
               // my program could employ short-circuit evaluation and, in doing so,
               // conserve computer resources.
               if ((row % 2 == 0) && (col % 2 == 0)) {
                  region.setBackground(Color.WHITE);
               } else if ((row % 2 == 1) && (col % 2 == 1)) {
                  region.setBackground(Color.WHITE);
               } else {
                  region.setBackground(new Color(220, 220, 220));
               }
               add(region);
            }
        }

    }

    /**
    * This method renders one large rectangle border.
    * @param g The Graphics object use to render
    */
    @Override
    public void paintComponent(java.awt.Graphics g) {

        // paint the underlying component
        super.paintComponent(g);

        // set the color of the outline
        g.setColor(Color.BLACK);

        // Set the size of outside black rectangle.
        // width is the number of columns times 50 pixels wide, plus the number of
        // columns plus 1 to account for borders.
        int width = (columns*50) + (columns + 1);

        // height is the number of rows in the board  times 50 pixels, plus the
        // number of columns plus 1 to account for borders.
        int height = (rows*50) + (rows + 1);

        g.drawRect(0, 0, width, height);
    }

    /*
     *@param None
     *@return b
     */
    SudokuBase getBase() {
        return b;
    }

   /**
    * Set the selected cell to the given row and column.
    * @param row The indicated row
    * @param col The indicated column
    * @throws IllegalArgumentException
    */
   public void setSelected(int row, int col) {
      if ((row < 0) || (col < 0)) {
          throw new IllegalArgumentException("Values must be greater than "
           + "or equal to 0.");
      } else{
          this.selectedRow = row;
          this.selectedColumn = col;
      }
   }

   /**
    * Retrive the row of the currently selected cell.
    * @return The row in which the selected cell is located.
    */
   public int getSelectedRow() {
       return this.selectedRow;
   }

   /**
    * Retrive the column of the currently selected cell.
    * @return The column in which the selected cell is located.
    */
   public int getSelectedColumn(){
       return this.selectedColumn;
   }


    public static void main(String[] args) {

        javax.swing.JFrame win = new javax.swing.JFrame("Test 2x3");
        win.setDefaultCloseOperation(javax.swing.JFrame.DISPOSE_ON_CLOSE);
        win.add(new SudokuBoard(new SudokuStub(2, 3)));
        win.pack();
        win.setVisible(true);

    }

}