import { ESLMixinElement } from '../../esl-mixin-element/core';
import { ESLMediaRuleList } from '../../esl-media-query/core';
/**
 * ESLLineClamp mixin element
 * @author Dmytro Shovchko
 *
 * ESLLineClamp is a custom mixin element that applies line clamping to its content based on the specified number of lines.
 * It uses CSS custom properties to control the number of lines and applies truncation when necessary.
 * The element also handles focus management and scroll behavior to ensure a smooth user experience.
 */
export declare class ESLLineClamp extends ESLMixinElement {
    static is: string;
    /** Default mask for media query parsing, can be overridden by setting the static property */
    static DEFAULT_MASK: string;
    /** Tolerance factor for determining clamping state, used to account for minor discrepancies in height calculations */
    TOLERANCE: number;
    /** Indicates whether the line clamping is active */
    clamped: boolean;
    /** Media query to activate clamping with number of lines */
    lines: string;
    /** Media conditions tuple string (uses '|' as separator), to be used in case of tuple syntax */
    mask: string;
    /**
     * Returns parsed media rule list for line clamping configuration
     * @returns ESLMediaRuleList instance for managing responsive line limits
     */
    get linesQuery(): ESLMediaRuleList<string>;
    protected get lineHeight(): number;
    protected get linesExpected(): string | null;
    protected connectedCallback(): void;
    protected disconnectedCallback(): void;
    protected attributeChangedCallback(): void;
    protected updateLines(): void;
    /** Handles query change and sets the CSS custom property for line clamping */
    protected onQueryChange(): void;
    /** Handles focus out event and resets scroll position */
    protected onFocusOut(e: FocusEvent): void;
    protected lastHeight: number;
    /** Handles resize events to update clamped state */
    protected onResize(): void;
    /** Observes custom broadcast 'esl:refresh' event to force refresh */
    protected onRefresh({ target }: Event): void;
    /** Handles show request events to scroll target into view */
    protected onShowRequest(e: CustomEvent): void;
}