17712 - rearchitect biff and folder/server listener

Status: VERIFIED FIXED

(MailNews Core :: Backend, defect, P3)

Description

[Alec Flett]

This is the master bug for what Scott, David, and myself talked about. Here's
what needs to happen:
1. The folder listener mechanism needs a new notification system for when
servers are loaded and unloaded.
2. The account manager needs to:
  - on XPCOM shutdown:
    - Write to folder cache (currently in the mail session)
    - Unload Accounts
      - which in turn should shutdown folders
  - when servers go away, notify server listeners of servers disappearing
  - when new servers are created, notify server listeners
3. Accounts should not release themselves from biff
4. The biff manager needs to:
  - remove accounts during the XPCOM shutdown phase
  - add accounts as servers are created

(The account manager datasource should also handle server notifications, but
I'll take care of that in another bug)

Comment 1

[scottputterman]

I added server listener notifications and the code where biff listens to them to
add/remove servers.

XPCOM shutdown notifications will be next.

Comment 2

[scottputterman]

I checked in the fix.

Comment 3

[lchiang]

I'm going to mark this verified now since we have the biff feature in.