/**
 * Dynamic Height Engine
 * Core engine for variable height virtual scrolling
 */
import { VisibleRange, EngineState, EngineConfig } from './types';
export interface DynamicHeightConfig extends EngineConfig {
    estimatedItemHeight: number;
    minItemHeight: number;
    maxItemHeight: number;
    heightBufferSize: number;
}
export interface DynamicHeightState extends EngineState {
    totalContentHeight: number;
    measuredItems: number;
    estimatedItems: number;
}
export declare class DynamicHeightEngine {
    private config;
    private variableHeightManager;
    private heightCache;
    private state;
    private containerElement;
    private itemElements;
    constructor(config?: Partial<DynamicHeightConfig>);
    /**
     * Initialize with container element
     */
    init(container: HTMLElement): void;
    /**
     * Setup scroll listener
     */
    private setupScrollListener;
    /**
     * Handle scroll event
     */
    private onScroll;
    /**
     * Update visible range based on scroll position
     */
    private updateVisibleRange;
    /**
     * Measure item height from DOM element
     */
    measureItem(index: number, element: HTMLElement): number;
    /**
     * Called when item height is measured
     */
    private onHeightMeasured;
    /**
     * Get items to render for current viewport
     */
    getItemsToRender(): {
        items: Array<{
            index: number;
            offset: number;
            height: number;
        }>;
        totalHeight: number;
        visibleRange: VisibleRange;
    };
    /**
     * Scroll to specific item index
     */
    scrollToIndex(index: number): void;
    /**
     * Set total number of items
     */
    setTotalItems(total: number): void;
    /**
     * Get current state
     */
    getState(): DynamicHeightState;
    /**
     * Get cache statistics
     */
    getCacheStats(): import("./HeightMeasurementCache").HeightCacheStats;
    /**
     * Clear cache for range
     */
    clearCacheRange(startIndex: number, endIndex: number): void;
    /**
     * Clear entire cache
     */
    clearCache(): void;
    /**
     * Cleanup
     */
    cleanup(): void;
    /**
     * Update viewport height
     */
    updateViewportHeight(height: number): void;
    /**
     * Get item offset for styling
     */
    getItemOffset(index: number): number;
    /**
     * Get item height
     */
    getItemHeight(index: number): number;
    /**
     * Check if item is measured
     */
    isItemMeasured(index: number): boolean;
}
export default DynamicHeightEngine;
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