import { Position } from '../view-interfaces';
import type { View } from '..';
import { CoreTypes } from '../../../../core-types';
export * from './view-helper-common';
export declare const AndroidHelper = 0;
declare class UILayoutViewController extends UIViewController {
    owner: WeakRef<View>;
    static initWithOwner(owner: WeakRef<View>): UILayoutViewController;
    viewDidLoad(): void;
    viewWillLayoutSubviews(): void;
    viewDidLayoutSubviews(): void;
    viewWillAppear(animated: boolean): void;
    viewDidDisappear(animated: boolean): void;
    get childViewControllerForStatusBarStyle(): UIViewController;
    traitCollectionDidChange(previousTraitCollection: UITraitCollection): void;
    get preferredStatusBarStyle(): UIStatusBarStyle;
}
declare class UIAdaptivePresentationControllerDelegateImp extends NSObject implements UIAdaptivePresentationControllerDelegate {
    static ObjCProtocols: {
        prototype: UIAdaptivePresentationControllerDelegate;
    }[];
    owner: WeakRef<View>;
    closedCallback: Function;
    static initWithOwnerAndCallback(owner: WeakRef<View>, whenClosedCallback: Function): UIAdaptivePresentationControllerDelegateImp;
    presentationControllerDidDismiss(presentationController: UIPresentationController): void;
}
declare class UIPopoverPresentationControllerDelegateImp extends NSObject implements UIPopoverPresentationControllerDelegate {
    static ObjCProtocols: {
        prototype: UIPopoverPresentationControllerDelegate;
    }[];
    owner: WeakRef<View>;
    closedCallback: Function;
    static initWithOwnerAndCallback(owner: WeakRef<View>, whenClosedCallback: Function): UIPopoverPresentationControllerDelegateImp;
    popoverPresentationControllerDidDismissPopover(popoverPresentationController: UIPopoverPresentationController): void;
}
/**
 * Bars a scroll view's content passes beneath, registered with UIKit so its
 * scroll edge effect covers them (iOS 26+). A bar may load after the scroll
 * view, be recreated, or live in another window (a keyboard accessory), so
 * entries are kept per NativeScript view and registered whenever both native
 * views exist.
 */
export declare class ScrollEdgeContainers {
    private readonly owner;
    private readonly entries;
    private readonly onContainerLoaded;
    private readonly onContainerUnloaded;
    constructor(owner: {
        nativeViewProtected: UIScrollView;
    });
    add(view: View, edge: CoreTypes.ScrollEdgeType): void;
    remove(view: View): void;
    /** Registers every entry whose native views exist. */
    attach(): void;
    /** Unregisters every entry; they register again on the next attach. */
    detach(): void;
    private release;
}
export declare class IOSHelper {
    static traitCollectionColorAppearanceChangedEvent: string;
    static traitCollectionLayoutDirectionChangedEvent: string;
    static UILayoutViewController: typeof UILayoutViewController;
    static UIAdaptivePresentationControllerDelegateImp: typeof UIAdaptivePresentationControllerDelegateImp;
    static UIPopoverPresentationControllerDelegateImp: typeof UIPopoverPresentationControllerDelegateImp;
    /**
     * Styles the scroll edge effect on every edge of a scroll view, or hides
     * them all for `none`. No-op before iOS 26.
     */
    static setScrollEdgeEffect(scrollView: UIScrollView, effect: CoreTypes.ScrollEdgeEffectType): void;
    static getParentWithViewController(view: View): View;
    static isHostedInView(view: View): boolean;
    static extendUnderContainerSafeArea(nativeView: UIView, frame: CGRect): CGRect;
    static invalidateStatusBarAppearance(controller?: UIViewController, reason?: string): void;
    static updateAutoAdjustScrollInsets(controller: UIViewController, owner: View): void;
    /**
     * This method simulates the iOS 11+ safeAreaLayoutGuide property and its constraints for older versions.
     *
     * @param controller
     * @param owner
     */
    static updateConstraints(controller: UIViewController, owner: View): void;
    /**
     * This method simulates the iOS 11+ safeAreaLayoutGuide property for older versions.
     *
     * @param controller
     */
    static initLayoutGuide(controller: UIViewController): UILayoutGuide;
    static insertNativeSubview(parentNativeView: UIView, childNativeView: UIView, atIndex?: number): void;
    static layoutView(controller: UIViewController, owner: View): void;
    static getPositionFromFrame(frame: CGRect): Position;
    static getFrameFromPosition(position: Position, insets?: Position): CGRect;
    /**
     * Returns `true` when an ancestor ScrollView has `iosContentInsetAdjustmentBehavior`
     * other than `'never'`, meaning iOS applies safe-area insets via `adjustedContentInset`.
     * `View.getSafeAreaInsets` returns empty insets in that case so nested content
     * doesn't double-count them.
     *
     * Duck-types on the property name to avoid a circular import of ScrollView.
     * The property defaults to `'never'`, so this returns `false` unless explicitly opted in.
     */
    static hasIOSManagedInsetAncestor(view: View): boolean;
    static shrinkToSafeArea(view: View, frame: CGRect): CGRect;
    static expandBeyondSafeArea(view: View, frame: CGRect): CGRect;
    static getAvailableSpaceFromParent(view: View, frame: CGRect): {
        safeArea: CGRect;
        fullscreen: CGRect;
        inWindow: CGRect;
    };
}