This revision respects the intention of r3011 that when K-9 Mail is
set for pushing only no message is displayed, as that condition is a
normal state. However, it provides valuable feedback in other cases
that synchronization is off-line, as was done in r1433.
Although the case when the user has intentionally set no account for
polling or pushing can be considered "normal" and therefore unworthy
of a message, it turns out to be a significant burden to detect that
situation when the network is offline, since we normally do not even
try to figure out the account configurations in that case. Therefore,
without making substantial, otherwise unwarranted, changes to
MailService.java, "Syncing off" would be displayed sometimes to such a
user, and sometimes not. Since it is presumably a rare case, and
there is minimal harm to display the "Syncing off" message, the
message will be consistently displayed when no account is set for
polling or pushing.
Note to translators:
"Syncing off" is different than "Polling off". The new phrase "Syncing
off" means that K-9 Mail is not performing any synchronization with
any mail server. The prior non-English phrases for "Polling off" are
currently in-place as translations for "Syncing off", as it seems that
the meanings are close enough that it would be better to show the
obsolete translations that to fallback to the English "Syncing off".
However, better translations of "Syncing off" would be welcome.
ea3619b733