GuiFieldPopupMenuListener.java

import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

import javax.swing.BorderFactory;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPopupMenu;
import javax.swing.border.Border;

public class GuiFieldPopupMenuListener implements MouseListener, ActionListener {

	protected GuiField field;

	protected BoardManager boardManager;

	public GuiFieldPopupMenuListener(GuiField field, BoardManager bM) {
		this.field = field;
		this.boardManager = bM;
	}

	protected JPopupMenu createPopupMenu() {
		JPopupMenu m = new JPopupMenu();
		JMenuItem mi;

		boolean done = false;
		done = true;
		for (int i = 0; i < boardManager.getField(Structure.BOX,
				field.getBoxIndex(), field.getFieldIndex()).getRemainingPos()
				.size(); i++) {
			mi = new JMenuItem(String.valueOf(boardManager.getField(
					Structure.BOX, field.getBoxIndex(), field.getFieldIndex())
					.getRemainingPos().get(i)));
			mi.addActionListener(this);
			m.add(mi);
		}
		if (!done)
			for (int i = 0; i < Field.POSSIBILITIES; i++) {
				mi = new JMenuItem(String.valueOf(i + 1));
				mi.addActionListener(this);
				m.add(mi);
			}
		return m;
	}

	public void mouseClicked(MouseEvent arg0) {
		if (!boardManager.getField(Structure.BOX, field.getBoxIndex(),
				field.getFieldIndex()).isInitialSet()) {

			createPopupMenu().show(arg0.getComponent(), arg0.getX(),
					arg0.getY());

		}
	}

	public void mouseEntered(MouseEvent arg0) {
		if (!boardManager.getField(Structure.BOX, field.getBoxIndex(),
				field.getFieldIndex()).isInitialSet()) {
			oldBorder = field.getBorder();
			field.setBorder(BorderFactory.createLineBorder(Color.ORANGE,
					EMPH_BORDER_THICKNESS));
		}

	}

	public void mouseExited(MouseEvent arg0) {
		if (!boardManager.getField(Structure.BOX, field.getBoxIndex(),
				field.getFieldIndex()).isInitialSet()) {
			field.setBorder(oldBorder);
		}

	}

	public void mousePressed(MouseEvent arg0) {
		// TODO Auto-generated method stub

	}

	public void mouseReleased(MouseEvent arg0) {
		// TODO Auto-generated method stub

	}

	public void actionPerformed(ActionEvent arg0) {
		boolean done = false;
		done = true;
		if (!boardManager.trySetField(Structure.BOX, field.getBoxIndex(), field
				.getFieldIndex(), new Field(Integer.parseInt(arg0
				.getActionCommand()))))
			JOptionPane.showMessageDialog(null,
					"Invalid state reached! Last action was undone.");
		if (!done)
			boardManager.setField(Structure.BOX, field.getBoxIndex(), field
					.getFieldIndex(), new Field(Integer.parseInt(arg0
					.getActionCommand())));
	}

	private static final int EMPH_BORDER_THICKNESS = 4;

	Border oldBorder;

}