package lab.games;

import java.awt.GridLayout;
import java.util.ArrayList;
import java.util.List;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

/**
 * The view of the GUI.
 */
public class View extends JFrame
{
    /**
     * The size of the images (in number of pixels).
     */
    public static final int SIZE = 50;
    
    /*
     * Images for an empty slot, a slot with coin of the computer, and
     * a slot with coin of the player.
     */
    private static final ImageIcon EMPTY = new ImageIcon("empty.jpg");
    private static final ImageIcon COMPUTER = new ImageIcon("computer.jpg");
    private static final ImageIcon PLAYER = new ImageIcon("player.jpg");
    
    private List<List<JLabel>> slots; // redundant but convenient
    
    /**
     * Initializes this view.
     * 
     * @param controller the controller of this view.
     * @pre. controller != null
     */
    public View(Controller controller)
    {
	// set the title of the frame to "Connect 4"
        
        JPanel panel = new JPanel();
        panel.setLayout(new GridLayout(Model.ROW + 1, Model.COLUMN));

        for (int c = 0; c < Model.COLUMN; c++)
	{
	    JButton button = new JButton("" + (c + 1));
	    button.setActionCommand("" + c);
	    button.addActionListener(controller);
	    panel.add(button);
	}

        List<List<JLabel>> slots = new ArrayList<List<JLabel>>(Model.ROW);
        for (int r = 0; r < Model.ROW; r++)
	{
	    List<JLabel> row = new ArrayList<JLabel>(Model.COLUMN);
	    for (int c = 0; c < Model.COLUMN; c++)
	    {
		JLabel slot = new JLabel(View.EMPTY);
		row.add(slot);
		panel.add(slot);
	    }
	    slots.add(row);
	}
        this.setSlots(slots);

        this.add(panel);
    }
    
    /**
     * Sets the slots to the given list of lists.
     * 
     * @param slots the slots.
     * @pre. slots != null
     */
    private void setSlots(List<List<JLabel>> slots)
    {
	this.slots = slots;
    }
    
    /**
     * Sets the slot with the given row and column number to the
     * given player.
     * 
     * @param row the row number.
     * @pre. row >= 0 && row < Model.ROW
     * @param column the column number.
     * @pre. column >= 0 && column < Model.COLUMN
     * @param player the player.
     * @pre. player == Model.PLAYER || player == Model.COMPUTER
     */
    public void setSlot(int row, int column, int player)
    {
	// implement this method
    }
}