Jquery .off vs dojo? - dojo

Question

What is equivalent of jquery $.off(event) to remove event on element by passing event name in Dojo?
I tried :
dojo.disconnect(handle) // but I dont have an handle to event
How to get the handle or is there any better way to to it?

Answer 1

There is no out of the box solution as far as I know of, so you would have to implement one by yourself. However, this could be a dangerous feature, if you suddenly disconnect all event handlers of a specific type.
However, you could use the dojo/aspect module to intercept calls to the dojo/on module, for example:
aspect.around(arguments, 0, function(original) {
on.signals = [ ];
return function(dom, name, handler) {
console.log(arguments);
on.signals.push({
signal: original.apply(this, arguments),
name: name
});
};
}, true);
I didn't find a proper way to put an aspect around a function itself, rather than a function wrapped inside an object. So I used a dirty trick and used the arguments array and because the on module is my first argument, this will put an aspect around the dojo/on reference.
What happens is that when you bind an event handler using dojo/on, it will save it inside an array. Now you could write your own dojo/on::off() function, for example:
on.off = function(eventName) {
arrayUtils.forEach(on.signals, function(signal) {
if (signal.name === eventName) {
signal.signal.remove();
}
});
};
Now you can use:
on.off("click");
To disconnect all click event handlers.
A full example can be found on JSFiddle: http://jsfiddle.net/Lj5yG/ but this could probably be improved.