63 lines
1.9 KiB
Java
63 lines
1.9 KiB
Java
package me.totalfreedom.event;
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import me.totalfreedom.base.CommonsBase;
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import me.totalfreedom.base.CommonsJavaPlugin;
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import org.bukkit.Bukkit;
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import org.bukkit.event.Event;
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import org.bukkit.event.Listener;
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import org.bukkit.plugin.java.JavaPlugin;
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import java.lang.reflect.Executable;
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import java.lang.reflect.Method;
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import java.util.*;
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import java.util.stream.Collectors;
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public class EventBus
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{
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private final Set<Listener> listenerSet = new HashSet<>();
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private final Map<Listener, Set<FEvent>> listenerEventMap = new HashMap<>();
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private final CommonsBase plugin;
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public EventBus(CommonsBase plugin) {
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this.plugin = plugin;
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}
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void registerListener(Listener listener) {
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Set<FEvent> eventSet = Arrays.stream(listener.getClass().getDeclaredMethods())
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.filter(m -> m.isAnnotationPresent(Handler.class))
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.map(Executable::getParameters)
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.filter(p -> p.length == 1)
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.filter(p -> FEvent.class.isAssignableFrom(p[0].getType()))
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.map(p ->
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{
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try
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{
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return (FEvent) p[0].getType().getDeclaredConstructor().newInstance();
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} catch (Exception exception) {
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exception.printStackTrace();
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return null;
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}
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})
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.filter(Objects::nonNull)
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.collect(Collectors.toSet());
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listenerEventMap.put(listener, eventSet);
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}
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void unregisterListener(Listener listener) {
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listenerEventMap.remove(listener);
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}
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public void startListening() {
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listenerSet().forEach(this::registerListener);
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}
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public void stopListening() {
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listenerSet().forEach(this::unregisterListener);
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}
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public Set<Listener> listenerSet() {
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return listenerSet;
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}
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}
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