import { IBBCodeAttributeOptions } from "./IBBCodeAttributeOptions";
/**
 * Represents an attribute of a bb-code.
 */
export declare class BBCodeAttribute {
    /**
     * A value indicating whether the attribute is required.
     */
    private required;
    /**
     * A value indicating if the value of the attribute - if not present - should be taken by the content of the bb-code.
     */
    private valueByContent;
    /**
     * The code that will be appended to the opening HTML-tag of the bb-code.
     *
     * `%s` will be replaced by the value of the attribute.
     */
    private code;
    /**
     * A regex-pattern for validating the value of the attribute.
     */
    private validationPattern;
    constructor(options: IBBCodeAttributeOptions);
    /**
     * Gets or sets a value indicating whether the attribute is required.
     */
    Required: boolean;
    /**
     * Gets or sets a value indicating if the value of the attribute - if not present - should be taken by the content of the bb-code.
     */
    ValueByContent: boolean;
    /**
     * Gets or sets the code that will be appended to the opening HTML-tag of the bb-code.
     *
     * %s will be replaced by the value of the attribute.
     */
    Code: string;
    /**
     * Gets or sets a regex-pattern for validating the value of the attribute.
     */
    ValidationPattern: RegExp;
}