Simple Thread-Safe Java Singleton to dispatch event to any listening object. It's use a java reflection to dispatch event to functions.
public static void main(...args){
// subscribe for listening an events
EventDispatcher.addEventListener("myCustomEvent", this, "dataReadyEventHandler");
EventDispatcher.addEventListener("myCustomEvent2", this, "dataReadyEventHandler");
EventDispatcher.addEventListener("myCustomEvent3", this, "anotherEventHandler");
// u can use any custom Classes to Listen the same event
MyCustomClass myCustomEventHandler = new MyCustomClass();
EventDispatcher.addEventListener("myCustomEvent3", myCustomEventHandler, "myCustomEventHandlerFunction");
// dispatch events and pass some data in it
EventDispatcher.dispatchEvent("myCustomEvent", new ArrayList());
EventDispatcher.dispatchEvent("myCustomEvent2", new HashMap<String, Object>());
EventDispatcher.dispatchEvent("myCustomEvent3", "HELLO FROM EVENT DISPATCHER");
// remove event listeners
EventDispatcher.removeAllListenersFromEvent("myCustomEvent");
EventDispatcher.removeEventListener("myCustomEvent2", this, "dataReady");
EventDispatcher.removeAllListenersFromEvent("myCustomEvent3");
}
/**
* You can listen another events in one function (ONLY PUBLIC)
* @param event - name of event
* @param data - your data object
*/
public void dataReadyEventHandler(String event, Object data){
switch(event){
case "myCustomEvent": println("DO SMTHNG WITH DATA "+data.toString()); break;
case "myCustomEvent2": println("DO SMTHNG WITH DATA 2"+data.toString()); break;
}
}
public void anotherEventHandler(String event, Object data){
println("ANOTHER EVENT FUNCTION");
}If u have any feedback of using this class please let me know about it. Also open an issue if u have any question or suggestion how you can improve this, or may be you have your own realization. Thank! Have a nice coding
- Write Performance Test
- Add "Priority" of calling listeners
MIT
Free Software, Hell Yeah!