/FileExtraction/Java_unseen/Wind-Development_WindSpigot/WindSpigot-API/src/main/java/org/bukkit/plugin/messaging/PluginMessageListenerRegistration.java
package org.bukkit.plugin.messaging;

import org.bukkit.plugin.Plugin;

/**
 * Contains information about a {@link Plugin}s registration to a plugin
 * channel.
 */
public final class PluginMessageListenerRegistration {
	private final Messenger messenger;
	private final Plugin plugin;
	private final String channel;
	private final PluginMessageListener listener;

	public PluginMessageListenerRegistration(Messenger messenger, Plugin plugin, String channel,
			PluginMessageListener listener) {
		if (messenger == null) {
			throw new IllegalArgumentException("Messenger cannot be null!");
		}
		if (plugin == null) {
			throw new IllegalArgumentException("Plugin cannot be null!");
		}
		if (channel == null) {
			throw new IllegalArgumentException("Channel cannot be null!");
		}
		if (listener == null) {
			throw new IllegalArgumentException("Listener cannot be null!");
		}

		this.messenger = messenger;
		this.plugin = plugin;
		this.channel = channel;
		this.listener = listener;
	}

	/**
	 * Gets the plugin channel that this registration is about.
	 *
	 * @return Plugin channel.
	 */
	public String getChannel() {
		return channel;
	}

	/**
	 * Gets the registered listener described by this registration.
	 *
	 * @return Registered listener.
	 */
	public PluginMessageListener getListener() {
		return listener;
	}

	/**
	 * Gets the plugin that this registration is for.
	 *
	 * @return Registered plugin.
	 */
	public Plugin getPlugin() {
		return plugin;
	}

	/**
	 * Checks if this registration is still valid.
	 *
	 * @return True if this registration is still valid, otherwise false.
	 */
	public boolean isValid() {
		return messenger.isRegistrationValid(this);
	}

	@Override
	public boolean equals(Object obj) {
		if (obj == null) {
			return false;
		}
		if (getClass() != obj.getClass()) {
			return false;
		}
		final PluginMessageListenerRegistration other = (PluginMessageListenerRegistration) obj;
		if (this.messenger != other.messenger && (this.messenger == null || !this.messenger.equals(other.messenger))) {
			return false;
		}
		if (this.plugin != other.plugin && (this.plugin == null || !this.plugin.equals(other.plugin))) {
			return false;
		}
		if ((this.channel == null) ? (other.channel != null) : !this.channel.equals(other.channel)) {
			return false;
		}
		if (this.listener != other.listener && (this.listener == null || !this.listener.equals(other.listener))) {
			return false;
		}
		return true;
	}

	@Override
	public int hashCode() {
		int hash = 7;
		hash = 53 * hash + (this.messenger != null ? this.messenger.hashCode() : 0);
		hash = 53 * hash + (this.plugin != null ? this.plugin.hashCode() : 0);
		hash = 53 * hash + (this.channel != null ? this.channel.hashCode() : 0);
		hash = 53 * hash + (this.listener != null ? this.listener.hashCode() : 0);
		return hash;
	}
}
