Google drive authorisation workflow

Not a google file (new or loaded from MindMup)

User authorised MindMup to access files	Overwrite	Save as new
yes	not shown	shown
no	not shown	shown - but prompt to auth first

Private file

User authorised MindMup to access files	Google access level to file	Load	Overwrite	Save as new
yes	Can read	through API	not shown	shown
yes	Can edit	through API	shown	shown
yes	No	fail - access error	x	x
no	Can read	fail - auth error	x	x
no	Can edit	fail - auth error	x	x
no	No	fail - auth error	x	x

Public file

User authorised MindMup to access files	Google access level to file	Load	Overwrite	Save as new
yes	Can read	through public link/proxy	not shown	shown
yes	Can edit	through public link/proxy	shown	shown
no	Can read	through public link/proxy	x	shown - but show prompt before saving
no	Can edit	through public link/proxy	ideally show and save directly	shown - but show prompt before saving

Both public and shared with user

User authorised MindMup to access files	Google access level to file	Load	Overwrite	Save as new
yes	Can read	through API	not shown	shown
yes	Can edit	through API	shown	shown
no	Can read	through public link/proxy	x	shown - but show prompt before saving
no	Can edit	through public link/proxy	ideally show and save directly	shown - but show prompt before saving