prs/prs.mobile.new/PRS.Mobile/Components/DocumentList/DocumentList.xaml.cs

using System;
using System.Threading.Tasks;
using InABox.Mobile;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
using Xamarin.Forms.Xaml.Internals;
using XF.Material.Forms.UI.Dialogs;

namespace PRS.Mobile
{
    [XamlCompilation(XamlCompilationOptions.Compile)]
    public partial class DocumentList
    {
        private ICoreRepository _itemsSource;

        public ICoreRepository ItemsSource
        {
            get => _itemsSource;
            set
            {
                _itemsSource = value;
                _imagelist.ItemsSource = value?.Items;
                _imagelist.LastUpdated = value?.LastUpdated ?? DateTime.MinValue;
            }
        }

        public Guid ParentID { get; set; }

        public event MobileListRefreshEvent RefreshRequested;

        public bool PullToRefresh
        {
            get => _imagelist.PullToRefresh;
            set => _imagelist.PullToRefresh = value;
        }

        public bool ShowRecordCount
        {
            get => _imagelist.ShowRecordCount;
            set => _imagelist.ShowRecordCount = value;
        }
        
        public DocumentList()
        {
            InitializeComponent();
        }

        private void Image_Clicked(object sender, EventArgs e)
        {
            if ((sender as MobileCard)?.BindingContext is IEntityDocumentShell shell)
            {
                if (shell.FileName.ToLower().EndsWith(".pdf"))
                {
                    PDFViewer pdf = new PDFViewer(shell.DocumentID);
                    Navigation.PushAsync(pdf);
                }
                else
                {
                    ImageViewerPage img = new ImageViewerPage(shell.DocumentID);
                    Navigation.PushAsync(img);
                }
            }
        }

        public async Task<bool> AddImage<T, TShell>(bool pdf = false, Func<TShell, Task<bool>> customiseshell = null) 
            where T : MobileDocumentSource, new() 
            where TShell : class, IEntityDocumentShell
        {
            
            MobileDocument file = null;
            try
            {
                file = await MobileDocument.From<T>();
            }
            
            catch (Exception e)
            {
                await MaterialDialog.Instance.AlertAsync(e.Message, "ERROR");
            }
            
            if (file != null)
            {
                var shell = ItemsSource.AddItem() as TShell;
                shell.ParentID = ParentID;
                
                bool confirm = (customiseshell == null) 
                    || await customiseshell.Invoke(shell);
                
                if (confirm)
                {
                    using (await MaterialDialog.Instance.LoadingDialogAsync("Saving Image"))
                    {
                        var thumbnail = MobileUtils.ImageTools.CreateThumbnail(file.Data, 256, 256);

                        shell.Thumbnail = thumbnail;

                        if (pdf)
                            file = file.ToPDF();

                        shell.FileName = file.FileName;

                        var docshell = EntityDocumentUtils.SaveDocument<TShell>(
                            file,
                            () => shell,
                            "Created on Mobile Device"
                        );
                        Device.BeginInvokeOnMainThread(() =>
                        {
                            ItemsSource.Search();
                            _imagelist.ItemsSource = null;
                            _imagelist.ItemsSource = ItemsSource.Items;
                        });
                        return true;
                    }
                }

            }

            return false;


        }

        private void _imagelist_OnRefreshRequested(object sender, MobileListRefreshEventArgs args)
        {
            RefreshRequested?.Invoke(this,args);
        }
    }
}