import { Injector, InjectionToken, Provider, Type } from '@angular/core';
import { NgeMarkdownTransformer } from '../nge-markdown-transformer';
import { NgeMarkdownContribution } from '../nge-markdown-contribution';
import * as i0 from "@angular/core";
/**
 * Highlight options.
 */
export interface NgeMarkdownHighlightOptions {
    /** <code></code> element to colorize. */
    element: HTMLElement;
    /** Target language (default plaintext) */
    language?: string;
    /**
     * Start line number or a space separated list of line numbers to show.
     *
     * Example:
     *
     * *Show all line numbers starting 1*
     *
     * `"1"`
     *
     * *Show all line numbers from 1 to 4*
     *
     * `"1-4"`
     *
     * *Show lines 2 4 5 6 7 9*
     *
     * `"2 4-7 9"`
     *
     */
    lines?: string;
    /**
     * A space separated list of line numbers to highlight.
     *
     * Example:
     *
     * *Highlight line 1*
     *
     * `"1"`
     *
     * *Highlight all lines from 1 to 4*
     *
     * `"1-4"`
     *
     * *Highlightw lines 2 4 5 6 7 9*
     *
     * `"2 4-7 9"`
     */
    highlights?: string;
    /** Filename to display */
    filename?: string;
}
/**
 * Highlighter service representation.
 */
export interface NgeMarkdownHighlighterService {
    /**
     * Function called to hightlight an HTMLElement code.
     * @param injector Injector reference to use Angular dependency injection.
     * @param options Highlight options.
     */
    highligtht?(injector: Injector, options: NgeMarkdownHighlightOptions): void | Promise<void>;
}
/**
 * Injection token to register a highlighter service.
 */
export declare const NGE_MARKDOWN_HIGHLIGHTER_SERVICE: InjectionToken<NgeMarkdownHighlighterService>;
/**
 * Contribution to add an abstract syntax highlighter.
 */
export declare class NgeMarkdownHighlighter implements NgeMarkdownContribution {
    private readonly injector;
    private readonly options;
    constructor(injector: Injector, options: NgeMarkdownHighlighterService);
    contribute(transformer: NgeMarkdownTransformer): void;
    private createAttributes;
    private colorizeCodes;
    private escapeHtml;
    static ɵfac: i0.ɵɵFactoryDeclaration<NgeMarkdownHighlighter, [null, { optional: true; }]>;
    static ɵprov: i0.ɵɵInjectableDeclaration<NgeMarkdownHighlighter>;
}
/**
 * Injection token to register `NgeMarkdownHighlighter` contribution.
 */
export declare const NgeMarkdownHighlighterProvider: Provider;
/**
 * Provider to register `NgeMonacoColorizerService` as the syntax highlighter.
 * @param type A reference to NgeMonacoColorizerService type.
 */
export declare function NgeMarkdownHighlighterMonacoProvider(type: Type<any>): {
    provide: InjectionToken<NgeMarkdownHighlighterService>;
    useValue: NgeMarkdownHighlighterService;
};