zdm/event-bus
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Add callback event handling

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The EventHandler class has been converted to an interface, with the
reflection specific part being moved to the new ReflectiveEventHandler
class. Callback event handlers implement the same interface through the
CallbackEventHandler class.

The event handlers are defined in the new handler package, which is not
exported by the eventbus.core module.
This commit is contained in:
Kai S. K. Engelbart
2021-11-02 19:33:18 +01:00
parent 897d794b86
commit ee688929fd
7 changed files with 280 additions and 87 deletions
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18
event-bus-core/src/test/java/dev/kske/eventbus/core/DispatchTest.java
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@ -26,6 +26,10 @@ class DispatchTest {
void registerListener() {
bus = new EventBus();
bus.registerListener(this);
bus.registerListener(SimpleEvent.class, e -> {
++hits;
assertEquals(4, hits);
});
}
/**
@ -52,9 +56,9 @@ class DispatchTest {
assertEquals(
"Event handler execution order for class dev.kske.eventbus.core.SimpleEvent (3 handler(s)):\n"
+ "==========================================================================================\n"
+ "EventHandler[method=void dev.kske.eventbus.core.DispatchTest.onSimpleEventFirst(), eventType=class dev.kske.eventbus.core.SimpleEvent, useParameter=false, polymorphic=true, priority=200]\n"
+ "EventHandler[method=static void dev.kske.eventbus.core.DispatchTest.onSimpleEventSecond(), eventType=class dev.kske.eventbus.core.SimpleEvent, useParameter=false, polymorphic=false, priority=150]\n"
+ "EventHandler[method=void dev.kske.eventbus.core.DispatchTest.onSimpleEventThird(dev.kske.eventbus.core.SimpleEvent), eventType=class dev.kske.eventbus.core.SimpleEvent, useParameter=true, polymorphic=false, priority=100]\n"
+ "ReflectiveEventHandler[eventType=class dev.kske.eventbus.core.SimpleEvent, polymorphic=true, priority=200, method=void dev.kske.eventbus.core.DispatchTest.onSimpleEventFirst(), useParameter=false]\n"
+ "ReflectiveEventHandler[eventType=class dev.kske.eventbus.core.SimpleEvent, polymorphic=false, priority=150, method=static void dev.kske.eventbus.core.DispatchTest.onSimpleEventSecond(), useParameter=false]\n"
+ "CallbackEventHandler[eventType=class dev.kske.eventbus.core.SimpleEvent, polymorphic=false, priority=100]\n"
+ "==========================================================================================",
executionOrder);
}
@ -72,12 +76,4 @@ class DispatchTest {
++hits;
assertEquals(3, hits);
}
@Event
@Polymorphic(false)
@Priority(100)
void onSimpleEventThird(SimpleEvent event) {
++hits;
assertEquals(4, hits);
}
}