Gracefully handle read only database files

[Wolodja Moros]

Hi,

I have the following use case in our church:

Computer in the church:
the data folder is synced with my nextcloud

Computer of my staff member:
the data is synced read-only to his Laptop

So why is the data synced read-only? The staff member is in some way disabled, but he is the most faithful and reliable staff member I ever had. So to avoid that he destroy the database (which would be destroyed on both computers) the database is read-only. But its absolutely enough that he can prepare our services at home.

In the most use cases, it works fine but sometimes OpenLP tries to write the read-only database which ends up in a traceback.

So behaviour in the moment:
When OpenLP tries to write a read-only database a traceback appears.

Expected behaviour:
OpenLP should:
a) at least show a nice error message, which should inform the user about the readonly database
b) better introduce a read-only mode, but this should have lower priority since the use case is not so common in my opinion.

Merry Christmas and thanks for your work till now. God bless you.

Jonatan

Information:
Version 2.4.6
Windows 10 Pro