BlurProtectionManager.cs

using Plugin.Maui.ScreenSecurity.Handlers;
using UIKit;
 
namespace NeuroAccessMaui
{
    internal class BlurProtectionManager
    {
        private static UIVisualEffectView? _blurBackground = null;
 
        internal static void HandleBlurProtection(bool enabled, ThemeStyle? style = null, UIWindow? window = null)
        {
            UIApplication.Notifications.ObserveWillResignActive((sender, args) =>
            {
                try
                {
                    if (enabled)
                        EnableBlurScreenProtection(window, style);
                    else
                        DisableBlurScreenProtection();
                }
                catch (Exception ex)
                {
                    ErrorsHandler.HandleException(nameof(HandleBlurProtection), ex);
                }
            });
 
            UIApplication.Notifications.ObserveDidBecomeActive((sender, args) =>
            {
                try
                {
                    DisableBlurScreenProtection();
                }
                catch (Exception ex)
                {
                    ErrorsHandler.HandleException(nameof(HandleBlurProtection), ex);
                }
            });
        }
 
        internal static void EnableBlur(UIWindow? window, ThemeStyle style)
        {
            try
            {
                EnableBlurScreenProtection(window, style);
            }
            catch (Exception ex)
            {
                ErrorsHandler.HandleException(nameof(EnableBlur), ex);
            }
        }
 
        internal static void DisableBlur()
        {
            try
            {
                DisableBlurScreenProtection();
            }
            catch (Exception ex)
            {
                ErrorsHandler.HandleException(nameof(DisableBlur), ex);
            }
        }
 
        private static void EnableBlurScreenProtection(UIWindow? window = null, ThemeStyle? style = null)
        {
            if (window != null)
            {
                var blurEffectStyle = style switch
                {
                    ThemeStyle.Light => UIBlurEffectStyle.Light,
                    _ => UIBlurEffectStyle.Dark
                };
 
                using var blurEffect = UIBlurEffect.FromStyle(blurEffectStyle);
 
                _blurBackground = new UIVisualEffectView(blurEffect)
                {
                    Frame = window.Frame
                };
 
                window.AddSubview(_blurBackground);
            }
        }
 
        private static void DisableBlurScreenProtection()
        {
            _blurBackground?.RemoveFromSuperview();
 
            _blurBackground = null;
        }
    }
}