Pressing Enter over the player put the whole app into keyboard mode and
dropped focus onto Play/Pause, even with Video Player Navigation off. Two
independent paths did it. InputModeTracker promoted on any key satisfying
isNavigationKey, a set that unioned activation, dismissal and the menu key
with the arrows and consulted no setting at all; separately the surface's
Select handler always asked the chrome for focus. Escape had the same effect,
which on desktop reads as the mouse cursor vanishing mid-playback.
Both now ask one predicate. eventRequestsFocusNavigation decides whether the
app switches to keyboard mode and whether a key may hand focus to the chrome,
so the two cannot disagree and focus can never land on a control while focus
chrome is still suppressed. Activation and dismissal act on what already has
focus, so they answer no; Tab, the menu key, a remote's OK or BACK, and an
arrow that will really traverse answer yes. The one input the predicate cannot
read off the event, whether the focused feature owns arrow keys, rides on the
node as DirectionalShortcutFocusNode instead of on a subtree, so every sheet,
prompt and OSD button stays an ordinary traversal target with nothing to
re-enable.
playerDirectionalNavigationEnabled and videoPlayerNavigationPreference replace
five hand-copied pref-or-isTV expressions and a screen-level cache that
disagreed with the live getter after a toggle. Services whose input is
synthesized past HardwareKeyboard announce themselves through
InputModeTracker.reportNonPointerInput rather than two static callbacks and
three copies of a highlight-strategy write. That registration is now
identity-guarded: the bootstrap-to-app tree swap disposed the outgoing tracker
after the incoming one initialised and cleared both callbacks, so gamepad and
companion remote input had stopped switching to keyboard mode entirely.
Falling out of the same rule: a companion heartbeat no longer flips an idle
desktop host into keyboard mode, analog-stick drift promotes only past the
deadzone that actually navigates, Enter keeps toggling playback once the
chrome is up, Tab both reaches and traverses the OSD, and the player surface
claims the remote from mount rather than only when the chrome starts hidden,
so the first key on a desktop route is a playback shortcut instead of the
screen node's chrome-raising self-heal.
isNavigationKey becomes isReservedControlKey, since its real meaning is a
shell key rather than a text character and the old name is what invited the
conflation. The unreachable PlayerChromeFocusTarget.timeline goes with it.
Consolidates duplicated logic behind shared implementations — paginated
grid tabs, focus chrome, cached remote stores, sheet selection columns,
the server artifact store and a test fixture layer — and removes code
that had become unreachable. Net reduction of about 5,500 lines with no
behaviour change.
Where a fix had landed separately in code that moved into a shared
helper, the fix was re-applied inside the helper rather than left behind
in the copy that went away.
Several pairs of near-identical code paths differ in one load-bearing
line. Each site now carries a comment naming the invariant that forces it
apart, backed by a characterization test so a future deduplication fails
loudly instead of silently changing behaviour.
Pinned: focusable wrapper vs. chip D-pad activation policy, profile
connection cleanup's raw-id vs. ServerId-typed server projections, live TV
tab loaders, video player display matching and playback service wiring,
track selection container ordering, tracker HTTP client status ladder, and
the MediaServerHttpClient shutdown/cancellation contract versus
ManagedHttpClient's closing guard.
New tests:
test/focus/dpad_activation_policy_test.dart
test/services/track_selection_container_ordinal_test.dart
test/services/trackers/tracker_status_ladder_test.dart
test/utils/media_server_http_client_shutdown_test.dart
Profile traces showed 100-370ms UI-thread frames while scrolling the
library screen, dominated by rebuilding and inflating media cards.
- Gate per-card focus/pointer chrome on input mode: FocusableWrapper
skips the scale/border wrappers and creates its AnimationController
lazily outside keyboard mode, and ClickableCursor plus the card tap
region only build MouseRegion/InkWell machinery on desktop - TV and
touch use a bare GestureDetector. Hub cards also drop their outer
gesture wrapper outside keyboard mode; the card's own tap region
always won the gesture arena anyway.
- Memoize sliver children (SliverChildMemo): browse/collections grids
and hub rows return identical widget instances for unchanged items,
so delegate swaps from pagination, watch-state, and deletion
setStates no longer rebuild every realized card inside layout. The
browse tab prunes the memo in lockstep with focus-node eviction so a
cached card can never resurrect a disposed FocusNode.
- Budget fresh inflation (CardInflationBudget): while a scrollable is
moving in pointer/touch mode at most one new card inflates per frame,
the rest render as SkeletonMediaCard and upgrade on following frames.
Hub rows also stop pre-inflating 250px of off-screen cards on entry.
Device traces: worst frame 373ms -> 103ms, per-card build 3.6ms ->
2.4ms median; remaining row-entry work is spread across frames.
edde746