import { LitElement, PropertyValues } from 'lit';
import { PartData } from '../../types/group.js';
import { PartPreprocessedData } from '../../utils/preprocess-part-data.js';
import './roller-digit.js';
export declare class TimeredCounterRoller extends LitElement {
    static styles: import("lit").CSSResult[];
    color: string;
    direction: 'up' | 'down';
    parts: PartData[];
    partPreprocessDataList: PartPreprocessedData[][];
    animationOptions: KeyframeAnimationOptions[][];
    keyframes: PropertyIndexedKeyframes[][];
    cellStyles: Partial<CSSStyleDeclaration>[][][];
    digitStyles: Partial<CSSStyleDeclaration>[][];
    partStyles: Partial<CSSStyleDeclaration>[];
    parentContainerRect: DOMRect;
    prefixContainer: HTMLElement | undefined;
    suffixContainer: HTMLElement | undefined;
    private __partDigitsColorStyles;
    protected render(): import("lit-html").TemplateResult<1>;
    protected willUpdate(_changedProperties: PropertyValues): void;
    /**
     * 记录一次更新中, 启动动画并结束的 <timered-counter-roller-digit> 元素个数.
     *
     * 在每次更新前重置为 0.
     *
     * @see {@link __handleDigitAnimationEnd}
     * @private
     */
    private digitAnimateEndCount;
    /**
     * 记录一次更新中, 需要启动动画的 <timered-counter-roller-digit> 元素总数.
     *
     * 在每次更新前重新计算.
     * @private
     */
    private digitAnimatedCount;
    private __handleDigitAnimationEnd;
    private __emitAnimationStart;
    private __emitAnimationEnd;
    private __generatePartDigitsColorStyles;
}