Only run triggerHandler( "remove" ) for widgets

[amakhrov]

ui.widget overrides the $.cleanData method to also call .triggerHandler( "remove" ) method. According to Chrome's profiler, triggerHandler is a relatively slow method.

When element is being removed with $(elem).remove(), $.cleanData is called for each descendant element - and there can be thousands of those elements!

This is an attempt to only execute triggerHandler( "remove" ) for elements that are jQueryUI Widgets and skip that for all other elements.

[scottgonzalez]

That won't work. Not all widget elements have that class.

[amakhrov]

However, if you still feel that this part needs some optimizing, another approach can be implemented - say, $.Widget will assign a certain property directly to DOM element. It will ensure that that all widgets have that defined.

I'm just not sure what would be a more idiomatic approach for this in jQueryUI

[scottgonzalez]

Feel free to come up with alternative and provide actual benchmarks.