With unintrusive error dialogs gone, we can cut some unnecessary bits
out of EActivity.
I'm also adding a new enum property called "state", which is one of:
E_ACTIVITY_RUNNING
E_ACTIVITY_WAITING
E_ACTIVITY_CANCELLED
E_ACTIVITY_COMPLETED
The state of an activity must be explicitly changed. In particular,
when the user cancels an activity the state should be set only after
confirming the operation has been cancelled and not when cancellation
is requested (e.g. after receiving a G_IO_ERROR_CANCELLED, not when
the GCancellable emits "cancelled"). EActivityBar and EActivityProxy
widgets have been updated to make this distinction clearer in the UI.
E_ACTIVITY_WAITING will be used when activities have to be queued and
dispatched in sequence, which I haven't written yet.
This marks the end of unintrusive error dialogs, which were too
unintrusive. We now show errors directly in the main window using
the EAlert / EAlertSink framework.
Rewrite the last usage of it in itip-formatter.c to use EAttachments
instead. This also allowed me to kill mail_save_part() in mail-ops.c.
I may need to reevaluate the EAttachment API at some point for all these
fringe EAttachment uses we're accumulating. Having to asynchronously
"load" an EAttachment whose content is already in memory kinda sucks.
mail-folder-cache previously was a bit of a pseudo object (sort of a singleton)
that operated on some file static data. This commit re-factors things so that
it is a proper class named MailFolderCache. At the moment, this doesn't gain us
much, but in the future, it will allow us to add signals, etc so that we can
de-couple a lot of the interdependencies in here. This is essentially a
pre-requisite to splitting up a lot of the mail backend stuff.
https://bugzilla.gnome.org/show_bug.cgi?id=604627
The changes are mainly including the e-alert-header.h header instead of just
e-alert.h. This allows us to include e-alert.h in non-UI situations when
necessary.
The EError mechanism is used both for error dialogs as well as basic alerts or
user prompts, so we should give it a more general name which matches this use.
This patch also cleans up a few includes of e-alert.h (formerly e-error.h) that
were not actually being used.
https://bugzilla.gnome.org/show_bug.cgi?id=602963
