CreateAccountMenu() is used to populate a BMenu with items corresponding
to the map of accounts provided to it― but when an account is disabled
or enabled, it can't update automatically.
A dedicated class, fAccountsMenu, now replaces it― it'll automatically
repopulate the list whenever the active accounts update.
Most of RosterWindow's special functions have been split into a special
BGroupView (including both the roster search-box and roster list),
RosterView.
This will give some more flexibility in other uses of the roster list.
In addition, RosterViews can be tied to a specific account by its
looper's instance ID, allowing it to either show all contacts (globally;
if the ID is set to -1) or only those of the specified account.
This can be useful, for example, when inviting contacts to a room―
you can only invite contacts that use the same protocol, and are
associated with your account, so showing all contacts doesn't make
sense.
The SearchBarTextControl class was removed, as it isn't particularly
necessary.
Previously, all Conversations/Contacts/Users were stored in the Server,
each in their respective KeyMaps, identified solely by their
identifiers. This leads to the glaring problem of overlap― if the user
has multiple accounts, some users/rooms might be used or present in multiple
accounts at the same time.
Now, each accounts' Contacts, Conversations, and Users are stored in
its ProtocolLooper, making this overlap impossible. An oversight of only
allowing one user identifier to be stored (fMySelf) in Server was also fixed
this way.
This is the bulk of the work required for multi-account support― now,
the user can join the same XMPP room on two seperate accounts, and it
works perfectly.