import { ConcreteWidget } from "aws-cdk-lib/aws-cloudwatch";
import { IFunction } from "aws-cdk-lib/aws-lambda";
/**
 * Properties of a custom widget.
 */
export interface CustomWidgetProps {
    /**
     * Title for the graph
     */
    readonly title?: string;
    /**
     * Width of the widget, in a grid of 24 units wide
     *
     * @default - 6
     */
    readonly width?: number;
    /**
     * Height of the widget
     *
     * @default - 6
     */
    readonly height?: number;
    /**
     * Lambda providing the widget contents.
     * The Lambda function should return HTML with widget code.
     * The simplest Lambda example:
     * ```typescript
     * exports.handler = function (event, context, callback) {
     *   return callback(null, "<h1>Hello! This is a custom widget.</h1><pre>" + JSON.stringify(event, null, 2) + "</pre>");
     * };
     * ```
     */
    readonly handler: IFunction;
    /**
     * Arguments to pass to the Lambda.
     * These arguments will be available in the Lambda context.
     */
    readonly handlerParams?: any;
    /**
     * Whether the widget should be updated (by calling the Lambda again) on refresh.
     *
     * @default - true
     */
    readonly updateOnRefresh?: boolean;
    /**
     * Whether the widget should be updated (by calling the Lambda again) on resize.
     *
     * @default - true
     */
    readonly updateOnResize?: boolean;
    /**
     * Whether the widget should be updated (by calling the Lambda again) on time range change.
     *
     * @default - true
     */
    readonly updateOnTimeRangeChange?: boolean;
}
/**
 * A dashboard widget that can be customized using a Lambda.
 */
export declare class CustomWidget extends ConcreteWidget {
    private readonly props;
    constructor(props: CustomWidgetProps);
    toJson(): any[];
}