declare namespace Ext {
    export namespace dd {
        export interface DragDropElementConfig {
        }

        export class DragDropElement   {
            public getPosX(el?: HTMLElement): number;
            public getPosY(el?: HTMLElement): number;
            public getScrollLeft(): number;
            public getScrollTop(): number;
            public getStyle(el?: HTMLElement, styleProp?: string): string;
            public handleWasClicked(node?: HTMLElement): boolean;
            public moveToEl(moveEl?: HTMLElement, targetEl?: HTMLElement): void;
            public numericSort(a?: number, b?: number): number;
            public swapNode(n1?: HTMLElement, n2?: HTMLElement): void;
        }
    }
}