source: trunk/src/org/expeditee/gui/ItemsList.java@ 1415

package org.expeditee.gui;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.function.Predicate;

import org.expeditee.items.Item;

/**
 * Extends a ArrayList of Items through composition in order to keep it sorted.
 */
public class ItemsList implements Iterable<Item> {
        private List<Item> items = new ArrayList<Item>();
        private boolean sorted = true;
        
        public ItemsList() { }
        
        public ItemsList(ItemsList initialList) {
                items.addAll(initialList.items);
        }
        
        public ItemsList(Collection<Item> unsorted) {
                items.addAll(unsorted);
                sort();
        }
        
        public void add(Item item) {
                items.add(item);
                sorted = false;
        }
        
        public void addAll(Collection<Item> toAdd) {
                items.addAll(toAdd);
        }
        
        public void sort() {
                if (!sorted) {
                        items.removeIf(item -> item == null);
                }
                Collections.sort(items);
                sorted = true;
        }

        @Override
        public Iterator<Item> iterator() {
                //sort();
                return items.iterator();
        }
        
        public boolean contains(Item item) {
                return items.contains(item);
        }
        
        public int size() {
                return items.size();
        }
        
        public void invalidateSorted() {
                sorted = false;
        }
        
        public boolean remove(Item item) {
                return items.remove(item);
        }
        
        public void removeAll(ItemsList newBody) {
                items.removeAll(newBody.items);
        }
        
        public void retainHistory(ItemsList historyItems) {
                items.retainAll(historyItems.items);
        }
        
        public int indexOf(Item item) {
                return items.indexOf(item);
        }
        
        public void set(int index, Item item) {
                items.set(index, item);
        }

        public boolean removeIf(Predicate<Item> condition) {
                return items.removeIf(condition);
        }       
        
        public Collection<Item> underlying() {
                return items;
        }
        
        public boolean isEmpty() { 
                return items.isEmpty();
        }

        public void clear() {
                items.clear();
        }
}