Office.js in Office Online (Word, Excel, Powerpoint ) - reload or close main page from task pane

Along an edit on Word, Excel and Powerpoint files session using O365 Web make available some method to refresh and close the the entire web page from Task Pane add-in.
It will be very helpful to implement specific client Business logics. 

Currently task pane addins works only in IFrame and usually stored in different domains so call reload on parent window doesn't work due to security issues.

Please this seems to be very important.