)
Toggles all classes specified in iterable on element.
Iterate through iterable's items, and add it if it is not on it, or
remove it if it is. This is the Dart equivalent of jQuery's
toggleClass.
If shouldAdd is true, then we always add all the classes in iterable
element. If shouldAdd is false then we always remove all the classes in
iterable from the element.
Each element of iterable must be a valid 'token' representing a single
class, i.e. a non-empty string containing no whitespace.
Source
/**
* Toggles all classes specified in [iterable] on element.
*
* Iterate through [iterable]'s items, and add it if it is not on it, or
* remove it if it is. This is the Dart equivalent of jQuery's
* [toggleClass](http://api.jquery.com/toggleClass/).
* If [shouldAdd] is true, then we always add all the classes in [iterable]
* element. If [shouldAdd] is false then we always remove all the classes in
* [iterable] from the element.
*
* Each element of [iterable] must be a valid 'token' representing a single
* class, i.e. a non-empty string containing no whitespace.
*/
void toggleAll(Iterable<String> iterable, [bool shouldAdd]);