import { ModuleHandler } from "@blockprotocol/core";
import type { EntityRootType, GraphEmbedderMessageCallbacks, GraphEmbedderMessages, Subgraph } from "./main.js";
/**
 * Creates a handler for the graph module for the embedder.
 * Register callbacks in the constructor or afterwards using the 'on' method to react to messages from the block.
 * Call the relevant methods to send messages to the block.
 */
export declare class GraphEmbedderHandler extends ModuleHandler implements GraphEmbedderMessages {
    private _blockEntitySubgraph;
    private _readonly?;
    constructor({ blockEntitySubgraph, callbacks, element, readonly, }: {
        blockEntitySubgraph: Subgraph<EntityRootType>;
        callbacks?: Partial<GraphEmbedderMessageCallbacks>;
        element?: HTMLElement | null;
        readonly?: boolean;
    });
    /**
     * Registers multiple callbacks at once.
     * Useful for bulk updates to callbacks after the module is first initialised.
     */
    registerCallbacks(callbacks: Partial<GraphEmbedderMessageCallbacks>): void;
    /**
     * Removes multiple callbacks at once.
     * Useful when replacing previously registered callbacks
     */
    removeCallbacks(callbacks: Partial<GraphEmbedderMessageCallbacks>): void;
    /**
     * Call the provided function when the named message is received, passing the data/errors object from the message.
     * If the named message expects a response, the callback should provide the expected data/errors object as the return.
     * @param messageName the message name to listen for
     * @param handlerFunction the function to call when the message is received, with the message data / errors
     */
    on<K extends keyof GraphEmbedderMessageCallbacks>(this: GraphEmbedderHandler, messageName: K, handlerFunction: NonNullable<GraphEmbedderMessageCallbacks[K]>): void;
    getInitPayload(this: GraphEmbedderHandler): Record<string, any>;
    blockEntitySubgraph({ data }: {
        data?: Subgraph<EntityRootType>;
    }): void;
    readonly({ data }: {
        data?: boolean;
    }): void;
}