import { D3Selection } from '../common/interfaces';
import { Track } from '../tracks';
export type LegendRowsFunction = (track: Track) => number;
export type LegendTriggerFunction = () => void;
export type LegendOnInitFunction = (elm: Element, track: Track, updateTrigger: LegendTriggerFunction) => void;
export interface LegendBounds {
    top: number;
    left: number;
    height: number;
    width: number;
}
export type LegendOnUpdateFunction = (elm: Element, bounds: LegendBounds, track: Track) => void;
interface BasicVerticalLinkLabelConfig {
    label: string;
    abbr: string;
    onClick: () => void;
    title?: string;
}
export interface LegendConfig {
    elementType: string;
    getLegendRows(track: Track): number;
    onInit: LegendOnInitFunction;
    onUpdate: LegendOnUpdateFunction;
}
/**
 * Helper functions for creating track legends.
 */
export default class LegendHelper {
    /**
     * Creates a basic legend config required by the wellog component
     */
    static basicLegendSvgConfig(trackRowsFunc: LegendRowsFunction, updateFunc: LegendOnUpdateFunction): LegendConfig;
    /**
     * Renders a simple rotated text label that is scaled to fit bounds
     */
    static renderBasicVerticalSvgLabel(g: D3Selection, bounds: LegendBounds, label: string, abbr: string, horizontal?: boolean): D3Selection;
    /**
     * Convenience function for quickly creating a legend config object for
     * a rotated label legend.
     */
    static basicVerticalLabel(label: string, abbr: string): LegendConfig;
    /**
     * Convenience function for creating a legend config object for
     * a clickable rotated label legend.
     */
    static basicVerticalLinkLabel({ label, abbr, onClick, title, }: BasicVerticalLinkLabelConfig): LegendConfig;
}
export {};