import type { FieldProps } from '@rjsf/utils';
import type { IEditorLanguageRegistry } from '@jupyterlab/codemirror';
import type { INotebookTracker } from '@jupyterlab/notebook';
import { NotebookTools } from '@jupyterlab/notebook';
declare namespace Private {
    /**
     * Custom active cell field options.
     */
    interface IOptions {
        /**
         * The tracker to the notebook panel.
         */
        tracker: INotebookTracker;
        /**
         * Editor languages registry
         */
        languages: IEditorLanguageRegistry;
    }
}
/**
 * The active cell field, displaying the first line and execution count of the active cell.
 *
 * ## Note
 * This field does not work as other metadata form fields, as it does not update metadata.
 *
 * A single instance is meant to be shared by every render of the field. The
 * displayed cell follows the notebook tracker rather than the render calls, so
 * that the field keeps working when the metadata form is not being rebuilt, and
 * so that it does not hold on to a cell model of a closed notebook.
 *
 * One instance owns one node, so the field can only be mounted in one place at
 * a time: `render` moves the node to the most recent mount point and leaves any
 * earlier one empty. Nothing renders this field twice today.
 */
export declare class ActiveCellTool extends NotebookTools.Tool {
    constructor(options: Private.IOptions);
    dispose(): void;
    render(props: FieldProps): JSX.Element;
    /**
     * Follow the active cell of the tracker, which is null once the last
     * notebook is closed.
     */
    private _onActiveCellChanged;
    /**
     * Handle a change to the current cell source, mime type or execution count.
     */
    private _onCellContentChanged;
    /**
     * Stop listening to the cell model the tool is currently displaying.
     */
    private _disconnectCellModel;
    /**
     * Reflect the execution count of the current cell.
     */
    private _updatePrompt;
    /**
     * Refresh the preview, writing an outdated prompt along with it.
     *
     * The prompt is written in the same task as the preview it belongs with, so
     * that the field never shows the prompt of one cell above the source line of
     * another while a language mode is being loaded.
     */
    private _update;
    private _tracker;
    private _languages;
    private _cellModel;
    private _previewDebouncer;
    private _updateId;
    private _pendingUpdate;
    private _promptOutdated;
    private _editorEl;
    private _inputPrompt;
}
export {};