add tapToClose flag

[warmhug]

No description provided.

[rt2zz]

I am a bit uncomfortable overloading the type argument close (the type argument to be honest was a bad api design on my part to begin with).

Can you explain why you need tapToClose flag passed to the onClose handler? Perhaps there is a more direct solution.

[warmhug]

I use open to control the drawer's "open/close" state. when i setState({ open: false }), will trigger onClose function, but it also trigger onClose on setting tapToClose. So, I can't distinguish between the two. Thus, i can not control the state totally.