Write path:
- realignRecurrence now handles weekly BYDAY only. What the rule must agree
with is the series *anchor*, which moves by the same wall-clock shift as the
dragged occurrence — weekday survives that (uniform mod 7), day-of-month does
not. BYMONTHDAY=28 with a January anchor, occurrence Feb 28 dragged to Mar 1,
produced a Jan 29 anchor under a BYMONTHDAY=1 rule: a DTSTART that is not an
instance of its own rule. Also refuse when the shift is not a whole number of
days, which would carry a late-enough anchor across an extra midnight.
- The accepted parts are now a subset of parseSimpleRecurrence's, so anything
realignable is a rule the UNTIL guard can actually read. FREQ=MONTHLY;BYDAY=MO
previously slipped past it and could move a series past its own end.
- The UNTIL check moved to write time and picks the date the chosen scope
actually starts at: the anchor for a whole-series move, the occurrence for a
split, nothing for a single occurrence. It used to test the occurrence in
every case and refused the ordinary drag of a bounded series' last one.
- shiftedByDays preserves the instant duration for timed events, as shiftedTo
already did — a month drag onto a DST changeover rewrote the whole series'
DURATION.
- Guard against a second drop landing while one is in flight; the shifts would
compound on the re-read anchor.
Gestures:
- A long press that never moved wrote a reschedule: the target snaps to the
15-minute grid at pickup, so an event at 09:07 resolved to 09:00 the instant
it lifted. The drop is now refused when it lands on the slot it started from.
- After pickup the gesture is driven and consumed on the initial pass. Pinching
mid-drag used to zoom and drag at once, then write wherever the zoom left the
block; the month grid's tap layer opened the day on lift.
- RTL: pointer x was mapped to columns as if the grid were LTR, so a drop landed
6-n columns away, and both ghosts used the direction-aware offset with root
coordinates, mirroring them across the screen.
- The month drop passes the day delta instead of a date, so the grid and the
view model no longer each resolve the event's first day in their own zone.
Jean-Luc Makiola
cf0540fce4