content: /*
   * Copyright (c) 2019-2020 5zig Reborn
   * Copyright (c) 2015-2019 5zig
   *
   * This file is part of The 5zig Mod
   * The 5zig Mod is free software: you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation, either version 3 of the License, or
   * (at your option) any later version.
   *
   * The 5zig Mod is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with The 5zig Mod.  If not, see <http://www.gnu.org/licenses/>.
   */
  
  package eu.the5zig.mod.manager;
  
  import com.google.common.collect.Lists;
  import eu.the5zig.mod.listener.Listener;
  
  import java.util.List;
  import java.util.UUID;
  
  /**
   * Created by 5zig.
   * All rights reserved © 2015
   */
  public class ChatTypingManager extends Listener {
  
  	private UUID typingTo = null;
  	private final List<UUID> typingFrom = Lists.newArrayList();
  
  	/**
  	 * Returns the Friend the Player is currently typing to or {@code null} if there is not Friend the Player is typing to.
  	 *
  	 * @return if the Friend the Player is currently typing to or {@code null} if there is not Friend the Player is typing to.
  	 */
  	public UUID getTypingTo() {
  		return typingTo;
  	}
  
  	/**
  	 * Sets the Friend the Player is currently typing to.
  	 *
  	 * @param typingTo The Friend the Player is currently typing to.
  	 */
  	public void setTypingTo(UUID typingTo) {
  		this.typingTo = typingTo;
  	}
  
  	/**
  	 * Adds a Friend to the typing List.
  	 *
  	 * @param friend The Friend that should be added.
  	 * @return If the Friend already existed in the typing List and if not so, if it has been successfully been inserted.
  	 */
  	public boolean addToTyping(UUID friend) {
  		synchronized (typingFrom) {
  			return !typingFrom.contains(friend) && typingFrom.add(friend);
  		}
  	}
  
  	/**
  	 * Removes a Friend from the typing List.
  	 *
  	 * @param friend The Friend that should be removed.
  	 * @return If the Friend has been successfully removed from the List.
  	 */
  	public boolean removeFromTyping(UUID friend) {
  		synchronized (typingFrom) {
  			return typingFrom.remove(friend);
  		}
  	}
  
  	/**
  	 * Returns if the Friend is currently typing to the Player.
  	 *
  	 * @param friend The Friend of the Player.
  	 * @return If the Friend is currently typing to the Player.
  	 */
  	public boolean isTyping(UUID friend) {
  		synchronized (typingFrom) {
  			return typingFrom.contains(friend);
  		}
  	}
  }
  