Hey !
I think that events like this can be very useful for custom dialogs too (Notifier Component).
For the moment, i need to create a variable that store true or false (when the user click on the button to open : true; when the user click “close” : false" to know if the dialog is opened or not. Also, there is no way to know if the dialog was closed because the user have clicked out of the dialog.
Thanks 