/**
 * @license
 * Copyright 2023 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
/**
 * A toolbox category that provides a search field and displays matching blocks
 * in its flyout.
 */
import * as Blockly from 'blockly/core';
/**
 * A toolbox category that provides a search field and displays matching blocks
 * in its flyout.
 */
export declare class ToolboxSearchCategory extends Blockly.ToolboxCategory {
    private static readonly START_SEARCH_SHORTCUT;
    static readonly SEARCH_CATEGORY_KIND = "search";
    private readonly SEARCH_INPUT_ID;
    private searchField?;
    private blockSearcher;
    /**
     * Initializes a ToolboxSearchCategory.
     *
     * @param categoryDef The information needed to create a category in the
     *     toolbox.
     * @param parentToolbox The parent toolbox for the category.
     * @param opt_parent The parent category or null if the category does not have
     *     a parent.
     */
    constructor(categoryDef: Blockly.utils.toolbox.CategoryInfo, parentToolbox: Blockly.IToolbox, opt_parent?: Blockly.ICollapsibleToolboxItem);
    /**
     * Initializes the search field toolbox category.
     *
     * @returns The <div> that will be displayed in the toolbox.
     */
    protected createDom_(): HTMLDivElement;
    /** The ID of the toolbox item must match the ID of the focusable node. */
    getId(): string;
    /**
     * Registers a shortcut for displaying the toolbox search category.
     */
    private registerShortcut;
    /**
     * Returns a list of block types that are present in the toolbox definition.
     *
     * @param schema A toolbox item definition.
     * @param allBlocks The set of all available blocks that have been encountered
     *     so far.
     */
    private getAvailableBlocks;
    /**
     * Builds the BlockSearcher index based on the available blocks.
     */
    private initBlockSearcher;
    /** See IFocusableNode.getFocusableElement. */
    getFocusableElement(): HTMLElement | SVGElement;
    /** See IFocusableNode.onNodeFocus. */
    onNodeFocus(): void;
    /**
     * Filters the available blocks based on the current query string.
     */
    private matchBlocks;
    /**
     * Disposes of this category.
     */
    dispose(): void;
}
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