import{type PropertyValues,type TemplateResult}from'lit';import{LyraElement}from'../../../internal/lyra-element.js';import type{LyraEntity}from'../entity-card/entity-card.class.js';import'../../layout/scroller/scroller.class.js';export type LyraPathElement={kind:'node';node:LyraEntity;}|{kind:'edge';relation:string;directed?:boolean;reverse?:boolean;};export interface LyraPathStripEventMap{'lr-entity-activate':CustomEvent<{entityId:string;occurrenceIndex:number;}>;'lr-relation-activate':CustomEvent<{relation:string;sourceNodeId?:string;targetNodeId?:string;occurrenceIndex:number;}>;}
/**
* `<lr-path-strip>` — a linear node -> relation -> node chain rendering "why A connects to B"
* (GraphRAG local-search reasoning paths) as a compact, horizontally scrollable strip.
* One-dimensional and presentational: no path finding, no branching, no per-element popovers.
*
* Public collection properties take bounded, clone-owned readonly snapshots. Create a new
* collection and reassign it after changes; mutating the assigned array does not update the view.
*
* @customElement lr-path-strip
* @event lr-entity-activate - A node element activated. `detail: { entityId, occurrenceIndex }`.
* @event lr-relation-activate - An edge element activated. `detail: { relation, sourceNodeId?,
* targetNodeId?, occurrenceIndex }` — source/target resolved from the adjacent retained node
* elements, `undefined` when the path is malformed at that position. `occurrenceIndex` is the
* element's index in the supplied path, so deliberately repeated identities remain distinct.
* @csspart base - The root wrapper, hosting the delegated roving-tabindex keydown handler.
* @csspart node - One `node`-kind element (a `<button>`).
* @csspart relation - One `edge`-kind element's relation label (a `<button>`).
* @csspart arrow - The `aria-hidden` directed-edge arrow glyph, logical (mirrors under RTL).
* @csspart empty - The empty-state message, shown when `path` is empty.
* @status stable
* @since 4.0.0
*/
export declare class LyraPathStrip extends LyraElement<LyraPathStripEventMap>{protected static readonly ownedCollectionProperties:readonly string[];static styles:import("lit").CSSResultGroup[];
/** Rendered in array order; alternation is the intended shape but not enforced. */
path:readonly LyraPathElement[];
/** Accessible name for the stable group when the host has no `aria-label`; falls back to
*  localized `pathStripLabel` when omitted. An explicitly empty host label stays empty, and so
*  does an explicitly empty `label`. */
label?:string;private activeIndex;private liveText;private restoreFocusAfterPathChange;private announcementSink?;private pathOccurrenceSource?;private pathOccurrenceSnapshot;private get pathOccurrences();connectedCallback():void;disconnectedCallback():void;protected willUpdate(changed:PropertyValues<this>):void;protected updated(changed:PropertyValues<this>):void;private activate;private onElementFocus;private focusIndex;private onKeyDown;private renderNode;private renderEdge;render():TemplateResult;}declare global{interface HTMLElementTagNameMap{'lr-path-strip':LyraPathStrip;}}