# Availability layers A React component in [Beamline](https://beamline.io/)'s [Data & tables](https://beamline.io/components/data) category. Live demo: https://beamline.io/components/availability-layers A week of bookable start times whose closed times explain themselves: every availability rule (hours, time off, bookings, buffers, rooms, lead time, horizon, an unsynced calendar) is a layer painted under the week; point at a closed time to read every reason with its facts; owners fan the layers apart, see what each rule closes and switch one off to preview the times it costs. ## Use it for - A booking app's week for one service and person or resource, where owners and front desks need to know why a time can't be booked, and which rule costs bookings. - The host computes the slots and every reason (its rules engine); the part paints, explains, counts and previews. ## Not for - Editing the rules themselves → [availability-rule-editor](https://beamline.io/components/availability-rule-editor). - A calendar of events → [event-calendar](https://beamline.io/components/event-calendar). ## Anatomy - header: whose week, the open count and the rule that alone closes the most, Show layers - week: day heads, the hour gutter, the stage: a base plane, one plane per rule with its blocks, the result plane with the start times (open pills, closed dots, unknown rings) - card: the probed time and every reason in rule order with its facts and an edit link; for customers one sentence and the nearest open times - legend (layers mode): each rule as a sentence, closes N, M only because of this, its preview switch and +N open ## States - flat - probing (the reasons' layers lit) - layered (planes fanned apart) - previewing (a rule off: opened times pop in) - customer - unknown (a calendar that didn't sync) - narrow (one day, day chips) ## Keyboard - Tab enters the week at one start; ↑/↓ move by time within a day, ←/→ to the nearest start on the next day (mirrored right to left) - A focused closed start shows its card; Tab moves into the card (Edit rule, the nearest open times); Escape in the card returns to the start - Show layers / Drop back is a toggle button; each rule's switch says whether the rule applies in the preview ## Motion Layers mode tilts the stage and fans the planes apart in depth, the result on top; a hovered rule's plane lifts; dropping back flattens them. Starts a preview opens pop in once. Reduced motion places at once. ## Props | Prop | Type | Default | Description | | --- | --- | --- | --- | | `label` (required) | `string` | — | Whose week and for what: "Dana · Cut and colour, 90 min". | | `days` (required) | `AvailabilityDay[]` | — | The days drawn, any number of them (a week, a fortnight, three days). | | `from` | `number` | — | The hours drawn, 0–24: `to` is the end of the drawn range, so a start must end by it. Default 8 to 19. | | `to` | `number` | — | | | `layers` (required) | `AvailabilityLayer[]` | — | | | `slots` (required) | `AvailabilitySlot[]` | — | | | `preview` | `((off: string[]) => AvailabilitySlot[])` | — | The week without the given layers, computed by the host: offers each rule's what-if switch. | | `audience` | `"customer" \| "owner"` | — | "owner" (default) reads the rules and the layered view; "customer" reads one sentence and the nearest open times, and never sees a reason's text (another client's name stays private). | | `onPick` | `((slot: AvailabilitySlot) => void)` | — | An open start chosen. | | `formatTime` | `((minutes: number) => string)` | — | Time in the host's format; default: the locale's hour and minute. | | `className` | `string` | — | Classes on the documented visual root; no override by default. | | `classNames` | `Partial` | — | Receives the documented native target or imperative handle; omitted by default. | | `defaultLayered` | `boolean` | — | Open with the layers fanned apart (the owner's "why"): every rule a sheet of glass over the week. Default false. | ## Built from - [Button](https://beamline.io/components/button.md) - [Label](https://beamline.io/components/label.md) - [Segmented control](https://beamline.io/components/segmented-control.md) - [Select](https://beamline.io/components/select.md) - [Spinner](https://beamline.io/components/spinner.md) - [Switch](https://beamline.io/components/switch.md) - [Text morph](https://beamline.io/components/text-morph.md) - [Tooltip](https://beamline.io/components/tooltip.md) ## Dependencies `lucide-react` ## Import ```tsx import { AvailabilityLayers } from "@beamline/availability-layers"; ``` ## Get it Availability layers is part of Beamline UI. Install the parts you need in your React app as compiled packages or editable source. 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