import { AssignedQuestion, GradedQuestion } from "../core/assigned_exams";
import { ResponseKind } from "../response/common";
import { ImmutableGradingResult, QuestionGrader } from "./QuestionGrader";
/**
 * chosen is -1 if the submission was blank
 */
export type SimpleMCGradingResult = ImmutableGradingResult & {
    indexChosen: number;
    indexCorrect: number;
};
export type SimpleMCGraderSpecification = {
    readonly grader_kind: "simple_multiple_choice";
    readonly correct_index: number;
};
export declare class SimpleMCGrader implements QuestionGrader<"multiple_choice", SimpleMCGradingResult> {
    readonly spec: SimpleMCGraderSpecification;
    readonly t_response_kinds: "multiple_choice";
    /**
     *
     * @param correctIndex 0-based index of correct answer.
     */
    constructor(spec: SimpleMCGraderSpecification);
    scale(new_points_possible: number): this;
    isGrader<T extends ResponseKind>(responseKind: T): this is QuestionGrader<T>;
    prepare(exam_id: string, question_id: string, spec: SimpleMCGraderSpecification): void;
    grade(aq: AssignedQuestion<"multiple_choice">): SimpleMCGradingResult;
    pointsEarned(gr: SimpleMCGradingResult): number;
    renderReport(aq: GradedQuestion<"multiple_choice", SimpleMCGradingResult>): string;
    annotateResponseElem(aq: GradedQuestion<"multiple_choice", SimpleMCGradingResult>, response_elem: JQuery): void;
    renderStats(): string;
    renderOverview(gqs: readonly GradedQuestion<"multiple_choice">[]): string;
}