refactoring EventManager

gradle.properties

@@ -1,3 +1,3 @@
 projectGroup=ghast
 projectName=ghast-tools
-projectVersion=1.2
+projectVersion=1.3

src/main/java/ghast/AssetsManager.java

@@ -136,6 +136,7 @@ public class AssetsManager {
 				while ((count = inputStream.read(buffer)) != -1) {
 					outputStream.write(buffer, 0, count);
 				}
+				outputStream.flush();
 			}
 		} catch (IOException e) {
 			throw new AssetsException(format("Error save asset \"{0}\" to \"{1}\": {2}",

src/main/java/ghast/EventContext.java

@@ -0,0 +1,55 @@
+package ghast;
+
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
+import org.bukkit.Bukkit;
+import org.bukkit.event.Event;
+import org.bukkit.event.EventPriority;
+import org.bukkit.event.Listener;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.function.BooleanSupplier;
+import java.util.function.Consumer;
+
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
+@SuppressWarnings("unused")
+public class EventContext implements Listener {
+
+	private static final BooleanSupplier EMPTY_FILTER = () -> true;
+
+	private final Map<Class<? extends Event>, Consumer<?>> eventMap = new HashMap<>();
+	private BooleanSupplier filter = EMPTY_FILTER;
+
+	public EventContext filter(BooleanSupplier filter) {
+		this.filter = (filter != null ? filter : EMPTY_FILTER);
+		return this;
+	}
+
+	public <T extends Event> EventContext onEvent(Class<T> eventType, EventPriority eventPriority, Consumer<T> consumer) {
+		if (consumer == null) {
+			eventMap.remove(eventType);
+		} else {
+			eventMap.put(eventType, consumer);
+			Bukkit.getPluginManager().registerEvent(eventType, this, eventPriority,
+					this::eventExecute, GhastTools.getPlugin());
+		}
+		return this;
+	}
+
+	public <T extends Event> EventContext onEvent(Class<T> eventType, Consumer<T> consumer) {
+		return onEvent(eventType, EventPriority.NORMAL, consumer);
+	}
+
+	@SuppressWarnings({ "unchecked", "rawtypes" })
+	private void eventExecute(Listener listener, Event event) {
+		Consumer consumer = eventMap.get(event.getClass());
+		if (consumer != null && filter.getAsBoolean()) {
+			consumer.accept(event);
+		}
+	}
+
+	public static EventContext create() {
+		return new EventContext();
+	}
+}

src/main/java/ghast/EventManager.java

@@ -1,66 +0,0 @@
-package ghast;
-
-import lombok.AccessLevel;
-import lombok.Getter;
-import lombok.RequiredArgsConstructor;
-import lombok.Setter;
-import lombok.experimental.UtilityClass;
-import org.bukkit.Bukkit;
-import org.bukkit.event.Event;
-import org.bukkit.event.EventPriority;
-import org.bukkit.event.Listener;
-
-import java.util.HashMap;
-import java.util.Map;
-import java.util.function.BooleanSupplier;
-import java.util.function.Consumer;
-
-@UtilityClass
-@SuppressWarnings("unused")
-public class EventManager {
-
-	public Builder createContext() {
-		return new Builder();
-	}
-
-	@RequiredArgsConstructor(access = AccessLevel.PRIVATE)
-	public static class Builder {
-
-		private static final BooleanSupplier EMPTY_FILTER = () -> true;
-
-		private final EventContext eventContext = new EventContext();
-
-		public Builder filter(BooleanSupplier filter) {
-			eventContext.setFilter(filter != null ? filter : EMPTY_FILTER);
-			return this;
-		}
-
-		public <T extends Event> Builder onEvent(Class<T> eventType, EventPriority eventPriority, Consumer<T> consumer) {
-			eventContext.getEventMap().put(eventType, consumer);
-			Bukkit.getPluginManager().registerEvent(eventType, eventContext, eventPriority,
-					eventContext::eventExecute, GhastTools.getPlugin());
-			return this;
-		}
-
-		public <T extends Event> Builder onEvent(Class<T> eventType, Consumer<T> consumer) {
-			return onEvent(eventType, EventPriority.NORMAL, consumer);
-		}
-	}
-
-	@RequiredArgsConstructor(access = AccessLevel.PRIVATE)
-	@Getter(AccessLevel.PRIVATE)
-	@Setter(AccessLevel.PRIVATE)
-	private static class EventContext implements Listener {
-
-		private final Map<Class<? extends Event>, Consumer<?>> eventMap = new HashMap<>();
-		private BooleanSupplier filter;
-
-		@SuppressWarnings({ "unchecked", "rawtypes" })
-		private void eventExecute(Listener listener, Event event) {
-			Consumer consumer = eventMap.get(event.getClass());
-			if (consumer != null && filter.getAsBoolean()) {
-				consumer.accept(event);
-			}
-		}
-	}
-}