Crate fret_ui_headless 

Headless UI state machines and small deterministic helpers.

This crate intentionally avoids theme/recipe policy and contains only reusable logic that can be shared across UI kits and component ecosystems.

Modules

calendar

calendar_solar_hijri

carousel

Headless carousel drag/snap state machine.

checked_state

cmdk_score

cmdk-style fuzzy scoring (ported from repo-ref/cmdk).

cmdk_selection

Headless cmdk-style “active option” selection helpers.

easing

Easing helpers for deterministic motion.

embla

form_state

form_validation

grid_viewport

hover_intent

Small, reusable hover intent state machine (delay open/close).

menu_nav

Menu/list navigation helpers (APG-aligned index math).

motion

Headless motion primitives (time-driven).

presence

roving_focus

Small helpers for APG-aligned “roving tabindex” style navigation.

safe_hover

Deterministic “safe hover” corridor helpers for nested menus.

scroll_area

ScrollArea shared types (Radix-aligned outcomes).

scroll_area_visibility

select_item_aligned

Radix Select item-aligned positioning math.

slider

snap_points

tab_strip_canonical

Canonical-order helpers for editor-style tab strips.

tab_strip_controller

Shared (policy-layer) helpers for editor-grade tab strip click arbitration.

tab_strip_drop_target

tab_strip_hit_test

tab_strip_overflow

tab_strip_overflow_menu

tab_strip_scroll

tab_strip_surface

table

Headless table engine (TanStack-aligned vocabulary, Rust-native API).

text_assist

Headless text-assist list controller for editor completion/history surfaces.

tooltip_delay_group

Tooltip provider delay-group logic (Radix-aligned outcomes).

tooltip_intent

transition

Transition timelines (deterministic, tick-driven).

typeahead

Typeahead buffer + prefix matching helpers (APG-inspired).