import { PropertyValues } from "lit";
import { FileFormat } from "../../services/templateService/ITemplateService";
import { BaseComponent } from "../BaseComponent";
/**
 * Process adaptive card content from an external file
 */
export declare class AdaptiveCardComponent extends BaseComponent {
    /**
     * The file URL to fetch
     */
    fileUrl: string;
    /**
     * The file format to load
     */
    fileFormat: FileFormat;
    /**
     * The fallback image URL
     */
    fallbackImageUrl: string;
    /**
     * The data context to use to render the card
     */
    cardContext: object;
    /**
     * The raw adaptive card content as string (i.e. JSON stringified)
     */
    cardContent: string;
    /**
     * The file content to display
     * IMPORTANT: This must be an HTMLElement instead of a string to be able to render event listeners added dynamically by the adaptivecards library (ex: play videos).
     */
    content: HTMLElement;
    constructor();
    render(): import("lit").TemplateResult<1>;
    static get styles(): import("lit").CSSResultGroup[];
    connectedCallback(): Promise<void>;
    protected updated(changedProperties: PropertyValues<this>): void;
    private _processAdaptiveCard;
}