ImageViewModel.cs

using CommunityToolkit.Mvvm.ComponentModel;
using NeuroAccessMaui.Services.UI.Photos;
using NeuroAccessMaui.UI.Pages;
using System.Collections.ObjectModel;
using Waher.Networking.XMPP.Contracts;
 
namespace NeuroAccessMaui.UI.Popups.Photos.Image
{
    public partial class ImageViewModel : BaseViewModel
    {
        private readonly PhotosLoader photosLoader;
 
        public ImageViewModel()
        {
            this.Photos = [];
            this.photosLoader = new PhotosLoader(this.Photos);
        }
 
        public ObservableCollection<Photo> Photos { get; }
 
        [ObservableProperty]
        private bool isSwipeEnabled;
 
        public void LoadPhotos(Attachment[] attachments)
        {
            this.photosLoader.CancelLoadPhotos();
            this.IsSwipeEnabled = false;
 
            _ = this.photosLoader.LoadPhotos(attachments, SignWith.LatestApprovedIdOrCurrentKeys, () =>
            {
                MainThread.BeginInvokeOnMainThread(() => this.IsSwipeEnabled = this.Photos.Count > 1);
            });
        }
 
        public void ClearPhotos()
        {
            this.photosLoader.CancelLoadPhotos();
        }
    }
}