import { EventEmitter, OnChanges } from '@angular/core';
import { BlogService, GroupedMarkdown } from './blog.service';
import { Observable } from 'rxjs';
export declare class GalleryBlogComponent implements OnChanges {
    blogService: BlogService;
    open: boolean;
    /**
     * Blog is inserted to the top (when date is null) and to all date groups, when date is set
     */
    date: Date;
    openChange: EventEmitter<boolean>;
    mkObservable: Observable<GroupedMarkdown[]>;
    constructor(blogService: BlogService);
    ngOnChanges(): void;
    toggleCollapsed(): void;
}