/
Event.java
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/
Event.java
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/*
* Copyright 2015 Austin Keener, Michael Ritter, Florian Spieß, and the JDA contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.dv8tion.jda.api.events;
import net.dv8tion.jda.api.JDA;
import net.dv8tion.jda.api.utils.data.DataObject;
import net.dv8tion.jda.internal.JDAImpl;
import net.dv8tion.jda.internal.handle.SocketHandler;
import net.dv8tion.jda.internal.utils.EntityString;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
/**
* Top-level event type
* <br>All events JDA fires are derived from this class.
*
* <p>Can be used to check if an Object is a JDA event in {@link net.dv8tion.jda.api.hooks.EventListener EventListener} implementations to distinguish what event is being fired.
* <br>Adapter implementation: {@link net.dv8tion.jda.api.hooks.ListenerAdapter ListenerAdapter}
*/
public abstract class Event implements GenericEvent
{
protected final JDA api;
protected final long responseNumber;
protected final DataObject rawData;
/**
* Creates a new Event from the given JDA instance
*
* @param api
* Current JDA instance
* @param responseNumber
* The sequence number for this event
*
* @see #Event(net.dv8tion.jda.api.JDA)
*/
public Event(@Nonnull JDA api, long responseNumber)
{
this.api = api;
this.responseNumber = responseNumber;
this.rawData = api instanceof JDAImpl && ((JDAImpl) api).isEventPassthrough() ? SocketHandler.CURRENT_EVENT.get() : null;
}
/**
* Creates a new Event from the given JDA instance
* <br>Uses the current {@link net.dv8tion.jda.api.JDA#getResponseTotal()} as sequence
*
* @param api
* Current JDA instance
*/
public Event(@Nonnull JDA api)
{
this(api, api.getResponseTotal());
}
@Nonnull
@Override
public JDA getJDA()
{
return api;
}
@Override
public long getResponseNumber()
{
return responseNumber;
}
@Nullable
@Override
public DataObject getRawData()
{
if (api instanceof JDAImpl) {
if (!((JDAImpl) api).isEventPassthrough())
throw new IllegalStateException("Event passthrough is not enabled, see JDABuilder#setEventPassthrough(boolean)");
}
return rawData;
}
@Override
public String toString()
{
if (this instanceof UpdateEvent<?, ?>)
{
final UpdateEvent<?, ?> event = (UpdateEvent<?, ?>) this;
return new EntityString(this)
.setType(event.getPropertyIdentifier())
.addMetadata(null, event.getOldValue() + " -> " + event.getNewValue())
.toString();
}
else
{
return new EntityString(this).toString();
}
}
}