import { AfterViewInit, ChangeDetectorRef, OnChanges, SimpleChanges, TemplateRef } from '@angular/core';
import { GuardError, HeaderData, HeaderStyles } from '@vitaba/common-utils';
import { BehaviorSubject } from 'rxjs';
export declare class HeaderTitleComponent implements OnChanges, AfterViewInit {
    private readonly _changeDetectorRef;
    changes: BehaviorSubject<SimpleChanges>;
    errors: GuardError;
    styles: HeaderStyles;
    data: HeaderData;
    titleExtraTemplate: TemplateRef<any>;
    descriptionExtraTemplate: TemplateRef<any>;
    lineExtraTemplate: TemplateRef<any>;
    constructor(_changeDetectorRef: ChangeDetectorRef);
    ngOnChanges(changes: SimpleChanges): void;
    ngAfterViewInit(): void;
    validateHeaderData(value: HeaderData): GuardError;
    validateHeaderStyles(value: HeaderStyles): GuardError;
}