A ringing alarm and a finished timer used to stop after a fixed ten
minutes. Settings > Alarms and Settings > Timers now each have a "Silence
after" row with Google Clock's choices: 1, 5, 10, 15, 20 or 25 minutes,
or Never. Ten minutes stays the default, so nothing changes on upgrade.
The value is app-wide; a per-alarm override would need a new column, a
migration and an editor row, and is left out.
"Never" rings for an hour, then stops. The backstop is also what keeps a
phone left at home from ringing its battery flat, what bounds the ring
services' wake locks, and what stops a reboot hours later from resuming a
ring nobody was there for. A truly unbounded ring would give all of that
up, so Never maps to a one-hour hard stop, longer than any finite choice,
and the settings hint says so. Stored values clamp to 0..60 on read, on
write and from a backup.
The window is read everywhere the fixed constant was: the resolver's
ringing and late-snooze checks (which now take it without a default), the
backstop onFire arms, how late a snooze fire may arrive, whether an
interrupted ring is resumed after a reboot, upcoming(), the timer ring
policy, the lapsed-session check and the timer ring screen. Both ring
services' wake-lock timeouts now derive from the hard stop instead of a
hard-coded fifteen minutes.
When the resolver closes a ring (the window was shortened mid-ring, the
clock jumped, the alarm was switched off), the engine now also stops the
ring service and cancels the backstop. Before, it only cleared
ringingSince and left the sound to a backstop armed for the old window.
Both values are backed up as default_alarm_silence_after_minutes and
default_timer_silence_after_minutes; a file without them imports as ten
minutes.
Fixes#17
makiolaj
412e54db09