/**
 * @license
 * Copyright 2023 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { LitElement, PropertyValueMap } from "lit";
import { RecentBoard, STATUS, Settings } from "../../types/types.js";
import { HarnessRunResult } from "@google-labs/breadboard/harness";
import { EditHistory, GraphDescriptor, GraphLoader, GraphProvider, InspectableRun, InspectableRunEvent, InspectableRunInputs, Kit } from "@google-labs/breadboard";
/**
 * Breadboard UI controller element.
 *
 * @export
 * @class UI
 * @extends {LitElement}
 *
 * @property {GraphDescriptor | null} graph
 * @property {Kit[]} kits - an array of kits to use by a board
 * @property {string | null} url
 * @property {STATUS}
 * @property {Board[]}
 **/
export declare class UI extends LitElement {
    #private;
    graph: GraphDescriptor | null;
    subGraphId: string | null;
    kits: Kit[];
    loader: GraphLoader | null;
    status: STATUS;
    run: InspectableRun | null;
    inputsFromLastRun: InspectableRunInputs | null;
    failedToLoad: boolean;
    boardId: number;
    showWelcomePanel: boolean;
    version: string;
    recentBoards: RecentBoard[];
    settings: Settings | null;
    providers: GraphProvider[];
    providerOps: number;
    selectedNodeIds: string[];
    isPortrait: boolean;
    debugEvent: InspectableRunEvent | null;
    history: EditHistory | null;
    static styles: import("lit").CSSResult;
    connectedCallback(): void;
    disconnectedCallback(): void;
    clearPosition(): void;
    /**
     * Handle state changes.
     *
     * Handle different types of messages and perform corresponding
     * actions based on the message type.
     *
     * @param {HarnessRunResult} message - Contains information about the state change with type and data property
     * @param {number} duration - The duration of the state change.
     *
     * @returns {Promise<Record<string, unknown> | void>}
     */
    handleStateChange(message: HarnessRunResult): Promise<Record<string, unknown> | void>;
    protected willUpdate(changedProperties: PropertyValueMap<{
        boardId: number;
        subGraphId: string | null;
    }> | Map<PropertyKey, unknown>): void;
    render(): import("lit-html").TemplateResult<1>;
}
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