Pixiview/Pixiview/Illust/FavoritesPage.xaml.cs

using System;
using System.Collections.Generic;
using Pixiview.Resources;
using Pixiview.Utils;
using Xamarin.Essentials;
using Xamarin.Forms;

namespace Pixiview.Illust
{
    public partial class FavoritesPage : FavoriteIllustCollectionPage
    {
        private bool flag = false;

        public FavoritesPage()
        {
            Resources.Add("cardView", GetCardViewTemplate());
            InitializeComponent();
        }

        protected override bool IsFavoriteVisible => false;
        protected override ActivityIndicator LoadingIndicator => activityLoading;
        protected override bool IsDelayLoading => true;

        protected override void OnAppearing()
        {
            if (lastUpdated != LastUpdated)
            {
                StartLoad();
            }
            else
            {
                var favorites = Stores.Favorites;
                if (favorites.Changed)
                {
                    favorites.Reload();
                    lastUpdated = default;
                    StartLoad();
                }
            }
        }

        protected override IEnumerable<IllustItem> DoGetIllustList(IllustItem[] data)
        {
            return data;
        }

        protected override IllustItem[] DoLoadIllustData(bool force)
        {
            var favorites = Stores.GetFavoriteObject(flag);
            flag = false;
            if (favorites == null)
            {
                return null;
            }
            var illusts = favorites.Illusts;
            for (var i = 0; i < illusts.Count; i++)
            {
                var item = illusts[i];
                if (item.RankTitle == null)
                {
                    item.RankTitle = item.Title;
                }
            }
            return illusts.ToArray();
        }

        public void Reload(bool force = false)
        {
            lastUpdated = default;
            if (force)
            {
                flag = true;
            }
            StartLoad(force);
        }

        private void Refresh_Clicked(object sender, EventArgs e)
        {
            flag = false;
            lastUpdated = default;
            StartLoad(true);
        }

        private async void ShareFavorites_Clicked(object sender, EventArgs e)
        {
            var file = Stores.FavoritesPath;
            await Share.RequestAsync(new ShareFileRequest
            {
                Title = ResourceHelper.Favorites,
                File = new ShareFile(file)
            });
        }
    }
}