export declare class StickyElementHelper { constructor(); private blockElement; private componentElm; private stickyElmScrollableParent; private scrollCallback; private parentScrollOffset; private lastScrollTop; private paddingTop; private isSticky; private selector; private elementWidth; private bgColor; private previousStyle; private previousColumnStyle; private static FILTER_CLASS; private tableColumnWidth; private applyStickyStyle; private tableColumnStyle; private stickyMenu; private tableColumn; registerStickyElement(componentElm: Element, selector: string): void; checkSticky(elm: Element): void; private getTopFilterHeight; private getTableColumnWidth; private getStickyElement; getBackground(element: any): any; }