import { ToolbarSplitDropdownElement } from './ToolbarSplitDropdownElement';
export declare class ToolbarBackgroundElement extends ToolbarSplitDropdownElement {
    currentColor: string;
    colorIndicator: HTMLDivElement | undefined;
    setFormat(format: {
        [key: string]: Set<any>;
    }): void;
    protected initEvent(): void;
    protected emitClick(): void;
    protected initDom(): void;
}