import java.util.Enumeration;
import java.util.NoSuchElementException;

/** Iterator for maps.
 * Iterates over all none-border elements of the map.
 */
class MapIterator implements Enumeration {
    /** The map to iterate over */
    private Map map;
    /** Current row */
    private int row = 1;
    /** Current column */
    private int col = 0;

    /** Create an iterator given a map */
    MapIterator(Map map) {
        this.map = map;
    }

    /** Check if there are more elements to iterate */
    public boolean hasMoreElements() {
        return (row < map.height-2 && col < map.width-2);
    }

    /** Return the next element */
    public Element nextElement() throws NoSuchElementException {
        if (!hasMoreElements()) {
            throw new NoSuchElementException();
        }

        if (col == map.width-2) {
            row += 1;
            col = 1;
        }
        else {
            col += 1;
        }

        return map.getElement(row, col);
    }

    public int getRow() { return row; }
    public int getCol() { return col; }
}