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feat: implemented listener registration
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parent
3438b7a38f
commit
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3 changed files with 21 additions and 12 deletions
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@ -3,8 +3,8 @@ package ftbsc.geb;
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import ftbsc.geb.api.IBus;
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import ftbsc.geb.api.IEvent;
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import ftbsc.geb.api.IEventDispatcher;
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import ftbsc.geb.api.IListener;
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import java.lang.reflect.Constructor;
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import java.util.Map;
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import java.util.ServiceLoader;
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import java.util.concurrent.ConcurrentHashMap;
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@ -21,9 +21,12 @@ public class GEB implements IBus {
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private final String identifier;
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/**
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* A {@link Map} tying each user-defined event class to its machine-generated implementation.
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* In practice, the {@link Class} of the original event is used as key and mapped to each
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* class' generated {@link Constructor}.
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* A {@link Map} tying each listener class to its instance.
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*/
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private final Map<Class<? extends IListener>, IListener> listenerMap;
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/**
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* A {@link Map} tying each event class to the appropriate dispatcher.
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*/
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private final Map<Class<? extends IEvent>, IEventDispatcher> dispatchMap;
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@ -33,17 +36,19 @@ public class GEB implements IBus {
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*/
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public GEB(String identifier) {
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this.identifier = identifier;
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this.listenerMap = new ConcurrentHashMap<>();
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this.dispatchMap = new ConcurrentHashMap<>();
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for(IEventDispatcher dispatcher : ServiceLoader.load(IEventDispatcher.class))
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dispatchMap.put(dispatcher.eventType(), dispatcher);
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}
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/**
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* @return the identifier of this bus
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* Registers a new listener on the bus.
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* @param listener the listener
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*/
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@Override
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public String getIdentifier() {
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return identifier;
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public void registerListener(IListener listener) {
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this.listenerMap.put(listener.getClass(), listener);
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}
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/**
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@ -53,6 +58,6 @@ public class GEB implements IBus {
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*/
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@Override
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public boolean handleEvent(IEvent event) {
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return dispatchMap.get(event.getClass()).callListeners(this.identifier, event);
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return this.dispatchMap.get(event.getClass()).callListeners(this.identifier, event, this.listenerMap);
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}
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}
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@ -7,9 +7,10 @@ package ftbsc.geb.api;
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*/
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public interface IBus {
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/**
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* @return the identifier of this bus
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* Registers a new listener on the bus.
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* @param listener the listener
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*/
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String getIdentifier();
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void registerListener(IListener listener);
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/**
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* Dispatches an event, calling all of its listeners that are subscribed to this bus.
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@ -1,5 +1,7 @@
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package ftbsc.geb.api;
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import java.util.Map;
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/**
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* The interface that the generated dispatchers will all use.
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* This interface isn't really meant to be used by humans, but it should work if your
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@ -11,12 +13,13 @@ public interface IEventDispatcher {
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* Calls all listeners for the given identifier.
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* @param identifier the identifier of the bus that's calling this
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* @param event the event to call
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* @param listeners a map mapping each {@link IListener} class to its instance
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* @return the value {@link IBus#handleEvent(IEvent)} will return for this
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*/
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boolean callListeners(String identifier, IEvent event);
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boolean callListeners(String identifier, IEvent event, Map<Class<? extends IListener>, IListener> listeners);
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/**
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* @return the {@link Class} representing the event in question
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* @return the {@link Class} representing the event this dispatcher works with
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*/
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Class<? extends IEvent> eventType();
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}
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