NoticeStatusList.java

package com.noticeditorteam.noticeditor.model;

import java.util.ArrayList;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;

/**
 * Collection of notice statuses
 *
 * @author Maximillian M.
 */
public class NoticeStatusList {

    private static ArrayList<NoticeStatus> list;
    private static int lastIndex;

    private static ArrayList<NoticeStatus> mementoList;
    private static int mementoLastIndex;

    static {
        list = new ArrayList<>();
        lastIndex = -1;
    }

    /**
     * Saves status list
     */
    public static void save() {
        mementoList = new ArrayList<>(list);
        mementoLastIndex = lastIndex;
    }

    /**
     * Restores statuses to saved state
     */
    public static void restore() {
        list = mementoList;
        lastIndex = mementoLastIndex;
    }

    /**
     * Adds new status with next status code
     *
     * @param statusName Status name
     */
    public static void add(String statusName) {
        ++lastIndex;
        NoticeStatus newStatus = new NoticeStatus(statusName, lastIndex);
        list.add(newStatus);
    }

    /**
     * Adds new status with specified status code
     *
     * @param statusName Status name
     * @param statusCode Status code
     */
    public static void add(String statusName, int statusCode) {
        lastIndex = (lastIndex < statusCode) ? statusCode : lastIndex + 1;
        NoticeStatus newStatus = new NoticeStatus(statusName, statusCode);
        list.add(newStatus);
    }

    /**
     * Clears status list
     */
    public static void clear() {
        list = new ArrayList<>();
    }

    /**
     * Returns status by code
     *
     * @param statusCode Status code
     * @return Status
     */
    public static NoticeStatus getStatus(int statusCode) {
        NoticeStatus foo = list.stream().filter(status -> status.getCode() == statusCode).findFirst().orElse(list.get(0));
        return foo;
    }

    /**
     * Returns status code by name
     *
     * @param statusName Status name
     * @return Status code
     */
    public static int getStatusCode(String statusName) {
        for (NoticeStatus status : list) {
            if (status.getName().equals(statusName)) {
                return status.getCode();
            }
        }
        return 0;
    }

    public static ObservableList<NoticeStatus> asObservable() {
        return FXCollections.observableList(list);
    }
}