GenericEventListeners for Java

Usage

1. Derive your class from Listenable

class MyClass extends Listenable {
}

2. Use addActionListener() for registering for an event type and implement the Listener interface.

class Main {
      public static void main(String[] args) {
        MyClass myObj = new MyClass();
        myObj.addEventListener("dispatched", new Listener<String>() {
            public boolean run(Event<String> e) {
              System.out.println(e.data);
            }
        });
        myObj.doDispatch();
      }
}

3. Dispatch an event from your Listenable class:

class MyClass extends Listenable {
      public void doDispatch() {
        dispatchEvent( new Event<String>("dispatched", "Hello World!") );
      }
}

Warning: dispatchEvent() does not check whether the type of the dispatched Event (here String) and the registered listeners match!

About

Author: @comfreek
License: MIT license, see LICENSE file for more information.