CODEWITHSUNDEEP
prototype
Omar Kooheji
Omar Kooheji

Reputation: 55800

In prototype is there a way of assessing what is listening to a dom objects events?

I've added an event listener to my prototype code, and I was wondering if there was a way to check what is observing a given dom element for events?

Preferably inspecting using firebug but javascript code will do.

Upvotes: 0

Views: 97

Answers (1)

Jonathan Fingland
Jonathan Fingland

Reputation: 57197

To the best of my knowledge, there is not. Not in prototype, and not in vanilla JavaScript.

The prototype API is available at http://prototypejs.org/api but having just taken another look to be sure, there does not appear to be any way to do that.

One option for you however, is make a registry of your own.

Edit

for example:

var EventRegistry = function() {
    var events=[];
    this.addEvent = function (element, func) {
        events.push({element:element,func:func});
        element.observe(func);
    }

    this.clearEvents = function(element) {
        events = events.reject(function(e) { 
            if (e.element == element) { 
                e.element.stopObserving(e.func); 
                return true;
            } else return false; 
        });
    }

    this.clearAllEvents = function (element) {
        events.each(function(e) { e.element.stopObserving(e.func); });
        events = [];
    }
}();

(Note: not tested.)

Upvotes: 1

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