SquirrelJME/SquirrelJME

// -*- Mode: Java; indent-tabs-mode: t; tab-width: 4 -*-
// ---------------------------------------------------------------------------
// Multi-Phasic Applications: SquirrelJME
//     Copyright (C) Stephanie Gawroriski <xer@multiphasicapps.net>
// ---------------------------------------------------------------------------
// SquirrelJME is under the Mozilla Public License Version 2.0.
// See license.mkd for licensing and copyright information.
// ---------------------------------------------------------------------------

package cc.squirreljme.debugger;

import java.util.LinkedHashMap;
import java.util.Map;

/**
 * Stores event handlers.
 *
 * @since 2024/01/26
 */
public class EventHandlers
{
    /** Event handler storage. */
    private final Map<Integer, EventHandler<?>> _eventHandlers =
        new LinkedHashMap<>();
    
    /**
     * Returns the event handler for the given request.
     *
     * @param __requestId The request to get.
     * @return The handler for the given event, assuming it exists.
     * @since 2024/01/20
     */
    public EventHandler<?> eventHandler(int __requestId)
    {
        synchronized (this)
        {
            return this._eventHandlers.get(__requestId);
        }
    }
    
    /**
     * Stores the event handler.
     *
     * @param __eventId The event ID.
     * @param __handler The handler to use.
     * @throws NullPointerException On null arguments.
     * @since 2024/01/26
     */
    public void put(int __eventId, EventHandler<?> __handler)
        throws NullPointerException
    {
        if (__handler == null)
            throw new NullPointerException("NARG");
        
        synchronized (this)
        {
            this._eventHandlers.put(__eventId, __handler);
        }
    }
}