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eventbus

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This commit is contained in:
yugecin 2017-01-15 22:37:59 +01:00
parent 88676f2c36
commit ec39392689
2 changed files with 82 additions and 0 deletions
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58
src/yugecin/opsudance/core/events/EventBus.java Normal file
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/*
* opsu!dance - fork of opsu! with cursordance auto
* Copyright (C) 2017 yugecin
*
* opsu!dance is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* opsu!dance is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with opsu!dance. If not, see <http://www.gnu.org/licenses/>.
*/
package yugecin.opsudance.core.events;
import com.google.inject.Inject;
import java.util.*;
@SuppressWarnings("unchecked")
public class EventBus {
private final List<Subscriber> subscribers;
@Inject
public EventBus() {
subscribers = new LinkedList<>();
}
public <T> void subscribe(Class<T> eventType, EventListener<T> eventListener) {
subscribers.add(new Subscriber<>(eventType, eventListener));
}
public void post(Object event) {
for (Subscriber s : subscribers) {
if (s.eventType.isInstance(event)) {
s.listener.onEvent(event);
}
}
}
private class Subscriber<T> {
private final Class<T> eventType;
private final EventListener<T> listener;
private Subscriber(Class<T> eventType, EventListener<T> listener) {
this.eventType = eventType;
this.listener = listener;
}
}
}

24
src/yugecin/opsudance/core/events/EventListener.java Normal file
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/*
* opsu!dance - fork of opsu! with cursordance auto
* Copyright (C) 2017 yugecin
*
* opsu!dance is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* opsu!dance is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with opsu!dance. If not, see <http://www.gnu.org/licenses/>.
*/
package yugecin.opsudance.core.events;
public interface EventListener<T> {
void onEvent(T event);
}