import type { ITranslator } from '@jupyterlab/translation';
import type { Message } from '@lumino/messaging';
import type { ISignal } from '@lumino/signaling';
import { Widget } from '@lumino/widgets';
import type { FileBrowserModel } from './model';
/**
 * A widget that renders a path text input with directory autocomplete.
 * It owns only the input field and the suggestions dropdown.
 * The trigger button and edit-mode state are managed by the parent widget.
 */
export declare class PathNavigator extends Widget {
    constructor(options: PathNavigator.IOptions);
    /**
     * A signal emitted when the navigator closes (Escape, blur, or after
     * navigation is committed).  The parent widget should use this to exit
     * edit mode.
     */
    get closed(): ISignal<this, void>;
    /**
     * Dispose of the resources held by the widget.
     */
    dispose(): void;
    /**
     * Open the path input: prefill with the model's current path, focus,
     * and load suggestions.
     */
    open(): void;
    /**
     * A message handler invoked on an `'after-attach'` message.
     */
    protected onAfterAttach(msg: Message): void;
    /**
     * A message handler invoked on a `'before-detach'` message.
     */
    protected onBeforeDetach(msg: Message): void;
    handleEvent(event: Event): void;
    /**
     * Close the input and notify the parent via the `closed` signal.
     */
    private _close;
    /**
     * Navigate to the given path, then close the input.
     */
    private _commitNavigation;
    /**
     * Whether the refreshed path corresponds to the last submitted path.
     */
    matchesSubmittedPath(localPath: string): boolean;
    /**
     * Fetch and display directory suggestions for the given input value.
     */
    private _updateSuggestions;
    /**
     * Re-render the suggestions list from the given paths.
     */
    private _renderSuggestions;
    /**
     * Handle keyboard navigation and confirmation inside the input.
     */
    private _evtKeydown;
    /**
     * Handle mousedown on a suggestion item.
     *
     * Using mousedown (before blur) and calling preventDefault() keeps focus on
     * the input, so we can navigate without the blur handler firing first.
     */
    private _evtSuggestionMousedown;
    /**
     * Move the active suggestion up or down by `direction` steps.
     */
    private _navigateSuggestions;
    /**
     * Accept the highlighted suggestion (Tab key).
     * If none is highlighted, complete to the sole match or longest common prefix.
     */
    private _acceptSuggestion;
    /**
     * Handle the model's `refreshed` signal.
     * Invalidate the suggestion cache so the next lookup fetches fresh data.
     * If the input is currently open, proactively re-fetch suggestions.
     */
    private _onModelRefreshed;
    private _model;
    private _trans;
    private _inputNode;
    private _suggestionsNode;
    private _closed;
    private _isOpen;
    private _suggestions;
    private _currentFilteredSuggestions;
    private _activeSuggestionIndex;
    private _suggestionDirPath;
    private _suggestionFetchTime;
    private _fetchId;
    private _submittedLocalPath;
}
export declare namespace PathNavigator {
    interface IOptions {
        /**
         * The file browser model.
         */
        model: FileBrowserModel;
        /**
         * The application language translator.
         */
        translator?: ITranslator;
    }
}