Package dev.comfast.events

Interface EventListener<T>

Type Parameters:

T - Type of context object that will be passed to listener.

public interface EventListener<T>

Event listener interface.

Method Summary

Modifier and Type	Method	Description
default void	after(AfterEvent<T> event)	Called after action. example implementation
default void	before(BeforeEvent<T> event)	Called before action. example implementation

Method Details

before

default void before(BeforeEvent<T> event)

Called before action. example implementation

 void before(BeforeEvent<T> event) {
    if(e.actionName.equals("click")) {
        e.context.doSomething();
        log.info("clicking on {}", e.actionParams[0]);
    }
 }
 

Parameters:

event - wraps all event data

after

default void after(AfterEvent<T> event)

Called after action. example implementation

 class MyListener implements EventListener<T> {
   void after(AfterEvent<T> e) {
     if(e.isFailed()) {
         log.info("action '{}' failed: {}", e.actionName, e.error);
         // action 'click' failed: NoSuchElementException
     } else {
         log.info("got result: '{}' in {}", e.result, e.time);
         // got result: 'hello' in 43ms
     }
   }
 }
 

Parameters:

event - wraps all event data, including result and time