Function in CallbackList for removing all callbacks

[wqking]

Function in CallbackList for removing all callbacks

[wqking]

Hi, what's the use case to remove all callbacks from a CallbackList? You may simply assign an empty CallbackList to the existing one to "clear" it, isn't it enough?
Note if we add such "clear" function in CallbackList, we also need to add similar functions to EventDispatcher and EventQueue, to keep the API consistent.

[vebjornjr]

The use-case is when a ComponentA har registered several callbacks with a ComponentB (which uses CallbackList internally). Often we want to unsubscribe (remove) the callbacks as the first step in the destructor of ComponentA so that it no longes receives callbacks. ScopedRemover will not work (as I see it) since we want to remove the callbacks before doing other clean-up in the destructor.

I will take a look at assigning an empty CallbackList.

[wqking]

After careful consideration, I think it's not necessary to add such function.
There are several alternatives to achieve this,
1, Assign the existing CallbackList with an empty CallbackList.
2, Or use the reset function in ScopedRemover.