/**
 * Chart component based on [Vega-Lite](https://vega.github.io/vega-lite/)/[Vega-Embed](https://github.com/vega/vega-embed).
 * Pass a valid Vega spec as `spec` property in order to render a chart.
 * Optionally for transfer of chart definitions with both single and double quote as attribute, use the `spec` as base64 encoded string.
 *
 * The `eox-chart` provides some default `spec` settings (merged with the provided `spec` property) and helper functionalities on top of Vega-Lite.
 *
 * Default `spec` settings (see the file `src/enums/default-spec.js`):
 * - `width`: "container" (make the chart width responsive to the parent)
 * - `height`: "container" (make the chart height responsive to the parent)
 * - `autosize`: "fit" (automatically adjust the layout in an attempt to force the total visualization size to fit within the given width, height and padding values)
 * - `resize`: true (autosize layout is re-calculated on every view update)
 * - `padding`: 16 (the padding in pixels to add around the visualization)
 *
 * These default `spec` settings can be overwritten by setting them to a differnt value in the `spec` property passed to `eox-chart`. Also, there are default
 * Vega-Embed options (see the file `src/enums/default-opt.js`), which can also be overwritten in the passed `opt` property.
 *
 * Helper functionalities:
 *
 * The `eox-chart` automatically emits mouse/pointer events from the Vega-Lite chart. See below for the emitted events.
 * For working with base64 encoded `spec` or `dataValues` attributes, `eox-chart` exports two helper methods: `base64EncodeSpec` (encoding), `parseSpec` (decoding).
 *
 * @element eox-chart
 */
export class EOxChart extends LitElement {
    static properties: {
        dataValues: {
            attribute: boolean;
        };
        spec: {
            attribute: boolean;
        };
        opt: {
            attribute: boolean;
            type: ObjectConstructor;
        };
        noShadow: {
            attribute: string;
            type: BooleanConstructor;
        };
        unstyled: {
            type: BooleanConstructor;
        };
    };
    /**
     * [Vega-Lite spec](https://vega.github.io/vega-lite/docs/spec.html) either as an object or base64 encoded string.
     *
     * @type {import("vega-embed").VisualizationSpec | string}
     */
    spec: import("vega-embed").VisualizationSpec | string;
    /**
     * [Vega-Embed options](https://github.com/vega/vega-embed?tab=readme-ov-file#options)
     *
     * @type {import("vega-embed").EmbedOptions}
     */
    opt: import("vega-embed").EmbedOptions;
    /**
     * Data values passed on runtime. Requires a [named data source](https://vega.github.io/vega-lite/docs/data.html#named) in the provided `spec`. Either passed as a base64 encoded string or as an object.
     *
     * @type {{[dataSourceName: string]: import("vega-lite/types_unstable/data.js").InlineData} | string}
     */
    dataValues: {
        [dataSourceName: string]: import("vega-lite/types_unstable/data.js").InlineData;
    } | string;
    /**
     * Renders the element without a shadow root
     *
     * @type {Boolean}
     */
    noShadow: boolean;
    /**
     * Render the element without additional styles
     *
     * @type {Boolean}
     */
    unstyled: boolean;
    /**
     * @private
     */
    private _dispatchItemPointerMoveEvent;
    /**
     * @private
     */
    private _dispatchItemClickEvent;
    /**
     * Lifecycle method called when the element is updated
     *
     * @param {import("lit").PropertyValues} changedProperties
     */
    updated(changedProperties: import("lit").PropertyValues): Promise<void>;
    /**
     * Append custom styling for vega tooltip
     */
    firstUpdated(): void;
    /**
     * Renders the component's HTML and CSS
     */
    render(): import("lit-html").TemplateResult<1>;
}
import { LitElement } from "lit";
import { base64EncodeSpec } from "./methods/encode";
import { parseSpec } from "./methods/decode";
export { base64EncodeSpec, parseSpec };
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