Upload click listener

Hi all,

I have a question - is there any way to catch the upload button click event? There are listeners to process events that happen after the file was selected (start upload, finish upload, upload progress, etc) but there is no opportunity to find out if the file selection dialog was showed and no API to force showing this dialog.

I have a use case of setting shortcut on the upload button, but i didn’t find a solution to handle it. Any ideas?