import { LitElement } from 'lit';
import '../../reusable/textInput';
export type HeaderLinkTarget = '_self' | '_blank' | '_parent' | '_top';
/**
 * Component for navigation links within the Header.
 * @fires on-click - Captures the click event and emits the original event details. `detail:{ origEvent: Event ,defaultPrevented: boolean}`
 * @slot unnamed - Slot for link text/content.
 * @slot links - Slot for sublinks (up to two levels).
 * @slot icon - Slot for icon.
 */
export declare class HeaderLink extends LitElement {
    static styles: import("lit").CSSResult;
    /** Link open state.
     * @internal
     */
    accessor open: boolean;
    /** Link url. */
    accessor href: string;
    /** Defines a target attribute for where to load the URL. Possible options include "_self" (default), "_blank", "_parent", "_top" */
    accessor target: HeaderLinkTarget;
    /** Defines a relationship between a linked resource and the document. An empty string (default) means no particular relationship */
    accessor rel: string;
    /** Link active state, for example when URL path matches link href. */
    accessor isActive: boolean;
    /** Link level, supports two levels.
     * @ignore
     */
    accessor level: number;
    /** DEPRECATED. Adds a 1px shadow to the bottom of the link. */
    accessor divider: boolean;
    /** Label for sub-menu link search input, which is visible with > 5 sub-links. */
    accessor searchLabel: string;
    /** Number of child links required to show search input. */
    accessor searchThreshold: number;
    /** Maximum number of links per column in plain (non-categorical) flyouts.
     * When set to a positive number and the slotted link count exceeds this value,
     * additional columns are created automatically. Default 0 (auto — no column splitting).
     */
    accessor linksPerColumn: number;
    /** Hide the search input regardless of the number of child links. */
    accessor hideSearch: boolean;
    /** Text for mobile "Back" button. */
    accessor backText: string;
    /** Add left padding when icon is not provided to align text with links that do have icons. */
    accessor leftPadding: boolean;
    /** Title attribute for the link, shown as a tooltip on hover. Useful for truncated text.
     * @internal
     */
    accessor linkTitle: string;
    /** When true, long text truncates with ellipsis. Default: false (text wraps normally). */
    accessor truncate: boolean;
    /** Auto-derived title from slot content, used if linkTitle is not set.
     * @internal
     */
    accessor _autoTitle: string;
    /** Indicates whether this link contains categorical navigation (kyn-header-categories or kyn-header-category).
     * @internal
     */
    accessor hasCategorical: boolean;
    /** Indicates whether this link contains multi-column categorical navigation (kyn-header-categories wrapper).
     * Used to distinguish multi-column flyouts from single-column category lists.
     * @internal
     */
    accessor hasMultiColumn: boolean;
    /** Number of columns in the categorical flyout (for width adjustment).
     * @internal
     */
    accessor flyoutColumns: number;
    /** Mirrors `fixed-column-widths` from nested kyn-header-categories.
     * @internal
     */
    accessor fixedColumnWidths: boolean;
    /** Current search term for filtering links in the flyout.
     * @internal
     */
    accessor _searchTerm: string;
    /** Number of slotted plain links (non-categorical), used for column calculation.
     * @internal
     */
    accessor _slottedLinkCount: number;
    /**
     * Queries any slotted HTML elements.
     * @ignore
     */
    accessor slottedEls: Array<HTMLElement>;
    /** Timeout function to delay flyout open.
     * @internal
     */
    _enterTimer: any;
    /** Timeout function to delay flyout close.
     * @internal
     */
    accessor _leaveTimer: any;
    /** Suppresses pointer-leave close during internal view transitions (e.g. "More" click).
     * @internal
     */
    private _viewChangeInProgress;
    private _viewChangeTimer;
    /** Cached truncation state from parent nav
     * @internal
     */
    accessor _inheritedTruncate: boolean;
    /** Observer for `truncate-links` changes on the owning nav.
     * @internal
     */
    private _truncateObserver?;
    private _observedNav;
    /** Menu positioning
     * @internal
     */
    accessor menuPosition: any;
    render(): import("lit-html").TemplateResult<1>;
    /** Compute inline styles for the links-columns wrapper.
     * Only applies multi-column layout for plain (non-categorical) flyouts
     * when the number of links exceeds linksPerColumn.
     * @internal
     */
    private get _linksColumnStyles();
    private _handleSearch;
    private _searchFilter;
    /** Extract text content from the default slot to use as auto-title */
    private _handleDefaultSlotChange;
    private _handleBack;
    private _handleLinksSlotChange;
    /** Handle column count changes from slotted kyn-header-categories
     * @internal
     */
    private _handleColumnCountChange;
    private get _isDesktopViewport();
    private handlePointerEnter;
    /** close other open header links at the same level
     * @internal
     */
    private _closeOtherOpenLinks;
    private handlePointerLeave;
    /** Check if flyout should auto-collapse based on parent nav's autoOpenFlyout.
     * Only applies to links containing categorical nav (kyn-header-categories).
     * @internal
     */
    private _shouldAutoCollapse;
    private handleClick;
    private handleClickOut;
    private determineLevel;
    private _positionMenu;
    /** @internal */
    private _debounceResize;
    firstUpdated(): void;
    updated(changedProps: any): void;
    private _handleDocumentClick;
    /** Suppress pointer-leave close when categories switch views (root ↔ detail).
     * @internal
     */
    private _handleNavChange;
    connectedCallback(): void;
    /** Find the closest owning nav across shadow boundaries.
     * @internal
     */
    private _resolveOwningNav;
    /** Sync inherited truncate state with the owning nav.
     * @internal
     */
    private _syncInheritedTruncate;
    /** Observe `truncate-links` changes on the owning nav.
     * @internal
     */
    private _observeParentNavTruncate;
    /** Check if this link is inside a nav with truncate-links attribute
     * Uses getRootNode to traverse up through shadow DOM boundaries
     * @internal
     */
    private _isInTruncatingNav;
    disconnectedCallback(): void;
}
declare global {
    interface HTMLElementTagNameMap {
        'kyn-header-link': HeaderLink;
    }
}
//# sourceMappingURL=headerLink.d.ts.map