import { QuestionComponent } from '../abstract/question.component';
import { Observable } from 'rxjs';
import { BarHorizontalComponent } from '@swimlane/ngx-charts';
import { ReplyItem } from '../../../../../classes';
export declare class QuestionCheckboxComponent extends QuestionComponent {
    chart: BarHorizontalComponent;
    results: Observable<{
        name: string;
        value: number;
    }[]>;
    xAxisTicks: number[];
    ngOnInit(): void;
    turnListIntoStatistics(list: ReplyItem[]): {
        name: string;
        value: number;
    }[];
    xAxisTickFormatting($event: any): any;
    yAxisTickFormatting(o_id: string): string;
    /**
     *
     * @param text option.text
     */
    onSelect(event: string | {
        name: string;
        value: number;
    }): void;
    generateNthSelection(n: number): string;
}