import { View } from "tns-core-modules/ui/core/view";
import { Placeholder } from "tns-core-modules/ui/placeholder";
import { ContentView } from "tns-core-modules/ui/content-view";
import { LayoutBase } from "tns-core-modules/ui/layouts/layout-base";
import { InvisibleNode, NgView, ViewExtensions } from "./element-registry";
import { Device } from "tns-core-modules/platform";
export declare type ViewExtensions = ViewExtensions;
export declare type NgView = NgView;
export declare type NgLayoutBase = LayoutBase & ViewExtensions;
export declare type NgContentView = ContentView & ViewExtensions;
export declare type NgPlaceholder = Placeholder & ViewExtensions;
export declare type BeforeAttachAction = (view: View) => void;
export declare function isLayout(view: any): view is NgLayoutBase;
export declare function isContentView(view: any): view is NgContentView;
export declare class ViewUtil {
    private isIos;
    private isAndroid;
    constructor(device: Device);
    insertChild(parent: View, child: View, previous?: NgView, next?: NgView): void;
    private addToQueue(parent, child, previous, next);
    private appendToQueue(parent, view);
    private addToVisualTree(parent, child, next);
    private insertToLayout(parent, child, next);
    private findNextVisual(view);
    removeChild(parent: View, child: View): void;
    private removeFromQueue(parent, child);
    private findPreviousElement(parent, child);
    private getPreviousVisualElement(parent, child);
    getChildIndex(parent: any, child: NgView): number;
    private removeFromVisualTree(parent, child);
    private removeLayoutChild(parent, child);
    createComment(): InvisibleNode;
    createText(): InvisibleNode;
    createView(name: string): NgView;
    private ensureNgViewExtensions(view);
    private setNgViewExtensions(view, name);
    setProperty(view: NgView, attributeName: string, value: any, namespace?: string): void;
    private runsIn(platform);
    private setPropertyInternal(view, attributeName, value);
    private getProperties(instance);
    private cssClasses(view);
    addClass(view: NgView, className: string): void;
    removeClass(view: NgView, className: string): void;
    private setClasses(view, classesValue);
    private syncClasses(view);
    setStyle(view: NgView, styleName: string, value: any): void;
    removeStyle(view: NgView, styleName: string): void;
}