tree d014c614cf47e084f0c01423ba24231d0acc0557
parent b0b58633e4a94cd103ec5f5a7987f0d546ef987e
author Jan-Philipp Steghöfer <ec@splashstudio.com> 1606987554 +0100
committer Jan-Philipp Steghöfer <ec@splashstudio.com> 1609755492 +0100

UI improvements in OfficeView and fixed potential NPE

The office view now only shows the menu items for selecting a sheet and
removing all entries if an Excel sheet is actually loaded into the view.
In addition, an additional check was introduced to ensure that sheets
are only accessed when a file is loaded into the view to avoid a
potential NPE when calling OfficeView.isSheetEmptyMap().