* feat(admin): shift-click range selection in the photo grid (#1212)
Selecting photos was one tile at a time. Select All is all-or-one, so
're-assign these two hundred' meant two hundred clicks — which is how #1209
ran into it, re-categorising a large imported set.
Shift-click now selects the span from the last plain click to the tile under
the cursor, the way a file manager does.
It extends the selection rather than replacing it: the grid already lets you
accumulate tiles one at a time, so a range is another addition to that set. And
it only ever adds — deselecting by dragging a range back over itself is a
different gesture, and guessing at it would let a mis-aimed shift-click destroy
a selection instead of growing it. The anchor stays put across repeated
shift-clicks, so the second one re-aims the same span from the original point
instead of walking along behind the cursor.
The anchor carries the id of the tile it was set on, not just the index. An
index means a different photo after a filter or a re-sort, and a range measured
from a stale anchor would select the wrong span with nothing to show for it;
the write checks the anchor still points where it was set and falls back to a
plain toggle when it does not. Validating at use rather than clearing on every
list change means a background refetch, which hands back an equal list, leaves
the anchor usable.
Seven tests, four of which fail without the change; the other three pin the
plain-click and no-anchor behaviour that must not move.
* fix(admin): clear the range anchor whenever the selection is cleared (#1212)
External review. Cancel Selection, Deselect All and a successful bulk move or
delete all emptied selectedPhotos and left the anchor behind. The anchor is
invisible, and the list is usually unchanged, so it stayed valid — the next
shift-click reached back into a selection session the user had already ended
and selected a range they never started.
Cleared at all four reset points now. Test fails against the un-fixed code.
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Co-authored-by: Paul Nothaft <[email protected]>
