Java tutorial
/* * Copyright 2015-2017 Austin Keener & Michael Ritter & Florian Spie * * 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.core.handle; import net.dv8tion.jda.client.entities.Group; import net.dv8tion.jda.client.events.message.group.react.GroupMessageReactionRemoveAllEvent; import net.dv8tion.jda.core.AccountType; import net.dv8tion.jda.core.entities.MessageChannel; import net.dv8tion.jda.core.entities.PrivateChannel; import net.dv8tion.jda.core.entities.TextChannel; import net.dv8tion.jda.core.entities.impl.JDAImpl; import net.dv8tion.jda.core.events.message.guild.react.GuildMessageReactionRemoveAllEvent; import net.dv8tion.jda.core.events.message.priv.react.PrivateMessageReactionRemoveAllEvent; import net.dv8tion.jda.core.events.message.react.MessageReactionRemoveAllEvent; import net.dv8tion.jda.core.hooks.IEventManager; import org.json.JSONObject; public class MessageReactionBulkRemoveHandler extends SocketHandler { public MessageReactionBulkRemoveHandler(JDAImpl api) { super(api); } @Override protected Long handleInternally(JSONObject content) { final long messageId = content.getLong("message_id"); final long channelId = content.getLong("channel_id"); MessageChannel channel = api.getTextChannelById(channelId); if (channel == null) { channel = api.getPrivateChannelById(channelId); } if (channel == null && api.getAccountType() == AccountType.CLIENT) { channel = api.asClient().getGroupById(channelId); } if (channel == null) { channel = api.getFakePrivateChannelMap().get(channelId); } if (channel == null) { api.getEventCache().cache(EventCache.Type.CHANNEL, channelId, () -> handle(responseNumber, allContent)); EventCache.LOG.debug("Received a reaction for a channel that JDA does not currently have cached"); return null; } IEventManager manager = api.getEventManager(); switch (channel.getType()) { case TEXT: manager.handle( new GuildMessageReactionRemoveAllEvent(api, responseNumber, messageId, (TextChannel) channel)); break; case GROUP: manager.handle(new GroupMessageReactionRemoveAllEvent(api, responseNumber, messageId, (Group) channel)); break; case PRIVATE: manager.handle(new PrivateMessageReactionRemoveAllEvent(api, responseNumber, messageId, (PrivateChannel) channel)); } manager.handle(new MessageReactionRemoveAllEvent(api, responseNumber, messageId, channel)); return null; } }