import { IRenderMimeRegistry } from '@jupyterlab/rendermime';
import { Kernel, KernelMessage } from '@jupyterlab/services';
import { Token } from '@lumino/coreutils';
import { DataModel } from '@lumino/datagrid';
import { IObservableDisposable } from '@lumino/disposable';
import { ISignal } from '@lumino/signaling';
import type { VariableInspectionHandler } from './handler';
export declare const IVariableInspectorManager: Token<IVariableInspectorManager>;
export interface IVariableInspectorManager {
    source: IVariableInspector.IInspectable | null;
    hasHandler(id: string): boolean;
    getHandler(id: string): VariableInspectionHandler;
    addHandler(handler: VariableInspectionHandler): void;
}
/**
 * The inspector panel token.
 */
export declare const IVariableInspector: Token<IVariableInspector>;
/**
 * An interface for an inspector.
 */
export interface IVariableInspector {
    source: IVariableInspector.IInspectable | null;
}
/**
 * A namespace for inspector interfaces.
 */
export declare namespace IVariableInspector {
    interface IInspectable extends IObservableDisposable {
        inspected: ISignal<IInspectable, IVariableInspectorUpdate>;
        rendermime: IRenderMimeRegistry | null;
        enabled: boolean;
        performInspection(): void;
        performMatrixInspection(varName: string, maxRows?: number): Promise<DataModel>;
        performWidgetInspection(varName: string): Kernel.IShellFuture<KernelMessage.IExecuteRequestMsg, KernelMessage.IExecuteReplyMsg>;
        performDelete(varName: string): void;
    }
    interface ISettings {
        maxItems: number;
    }
    interface IVariableInspectorUpdate {
        title: IVariableTitle;
        payload: Array<IVariable>;
    }
    interface IVariable {
        varName: string;
        varSize: string;
        varShape: string;
        varContent: string;
        varType: string;
        isMatrix: boolean;
        isWidget: boolean;
    }
    interface IVariableTitle {
        kernelName?: string;
        contextName?: string;
    }
}