import { ElementRef, OnInit } from '@angular/core';
import { Destroyable } from '@ts-core/common';
import { Theme, ThemeService } from '@ts-core/frontend/theme';
export declare class ThemeAssetDirective extends Destroyable implements OnInit {
    protected theme: ThemeService;
    isImage: boolean;
    isBackground: boolean;
    protected _name: string;
    protected _extension: string;
    protected source: string;
    protected element: HTMLElement;
    private isTriedThemeDefault;
    constructor(element: ElementRef, theme: ThemeService);
    protected getSource(id: string): string;
    private errorLoadingHandler;
    protected errorHandler(event: ErrorEvent): void;
    protected updateSourceProperties(): void;
    protected getSourceId(theme: Theme): string;
    protected getDefaultSourceId(theme: Theme): string;
    protected commitSourceProperties(): void;
    ngOnInit(): void;
    destroy(): void;
    get name(): string;
    set name(value: string);
    get extension(): string;
    set extension(value: string);
}