At this step is just an idea.
How many times did you find to deal with many objects and to start loosing control over the events flow of teh applications.
I use many times different libraries ( I always try to follow the best practice ) implementing his own way to manage events. it works but many times is not a very efficient way of desgin your applications. It's a long time I have in mind to build a centralized event manager framework-agnostic to be used as external support for :
- create new custom events
- resgister events in a respository
- being able to subscribe to these events
- dispach teh eevnt from any place in my application
I finally started to build OPS as a simple events manager.
Here a fast example of a very very alpha release, just to post the concept:
/* Craete e new event using the OPS factory.
I also pass a callback that will receive the full event like argument.
*/
var myEvent = new OPS.Factory.Event('myEvent', function(ev){
alert(ev.getData());
});
/*
register the event in the OPS.Events repository
*/
OPS.Events.addEvent(myEvent);
/*
my observer is an object that fill up an input filed when something happen
*/
var observer = function(ev){
document.getElementById('div_Foo').value = ev.getData();
}
/* subscribe the observer to run when myEvent is dispatched */
OPS.Events.subscribe( observer , myEvent );
$(document).ready(function(){
$('#select_Foo').change(function(){
/* on select change I add data to myEvent */
myEvent.setData($(this).val());
/* dispatch the event from the OPS repository passing the event itself ( with data added ) as argument */
OPS.Events.dispatchEvent(myEvent);
});
});As you see in the example I before create e new event using the
internally OPS.Factory.Event class giving a name and optionally a
callback.
The event is then added to repository that store it by name.
An
observer method is subscribed to the event that is then dispatched
passing event object itself as argument with a dynamic data argument
that can store anything.
As you see teh event is dispached as answer to a change attached with jquery but could dispatched in any other postion.
I will add a sort of api and more examples/ test quite soon.
