PagingUtil

PagingUtil.java

public class PagingUtil {

    public static boolean isDisplayPage(int i, int pageNum, int maxPage) {
        int distance = pageNum - i;
        int min = 2;
        int max = min * 2;

        if (distance == 0) {
            return true;
        }

        if (distance < 0) {
            int left = pageNum <= min ? pageNum - 1 : min;
            if (left - distance <= max) {
                return true;
            }
        }

        if (distance > 0) {
            int right = (maxPage - pageNum) < min ? (maxPage - pageNum) : min;
            if (right + distance <= max) {
                return true;
            }
        }

        return false;
    }
}