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package io.github.palexdev.mfxcore.events;

import io.github.palexdev.mfxcore.events.bus.IEvent;
import io.github.palexdev.mfxcore.events.bus.Subscriber;

/**
 * Basic implementation of {@link IEvent} and starting point to implement real events.
 * 
 * Many frameworks with similar capabilities use events that can carry some data. While this is not strictly necessary
 * for an event bus, it is indeed nice to have. The data being carried can provide valuable information to the {@link Subscriber}.
 * It's not limited solely to context-explaining data; it can also be used to transmit instances throughout an application,
 * for example.
 *
 * @see IEvent
 */
public abstract class Event implements IEvent {
	//================================================================================
	// Properties
	//================================================================================
	private final Object data;

	//================================================================================
	// Constructors
	//================================================================================
	protected Event() {
		this(null);
	}

	public Event(Object data) {
		this.data = data;
	}

	//================================================================================
	// Overridden Methods
	//================================================================================
	@Override
	public Object data() {
		return data;
	}
}