Initial version.

TINKLib/ViewModel/WhatsNew/Agb/AgbViewModel.cs

@@ -0,0 +1,79 @@
+using TINK.View;
+using System.Windows.Input;
+using Xamarin.Forms;
+using System;
+using System.ComponentModel;
+using System.Threading.Tasks;
+using TINK.ViewModel.Info;
+using TINK.Model.User.Account;
+
+namespace TINK.ViewModel.WhatsNew.Agb
+{
+    public class AgbViewModel : INotifyPropertyChanged
+    {
+        /// <summary> Fired whenever a property changed.</summary>
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        /// <summary> Holds the name of the host.</summary>
+        private string HostName { get; }
+
+        /// <summary> Holds value wether site caching is on or off.</summary>
+        bool IsSiteCachingOn { get; }
+
+        /// <summary> Constructs AGB view model</summary>
+        /// <param name="isSiteCachingOn">Holds value wether site caching is on or off.</param>
+        /// <param name="resourceProvider">Delegate to get an an embedded html ressource. Used as fallback if download from web page does not work and cache is empty.</param>
+        /// <param name="p_oViewService">View service to close page.</param>
+        public AgbViewModel(
+            string hostName,
+            bool isSiteCachingOn,
+            Func<string, string> resourceProvider,
+            IViewService p_oViewService)
+        {
+            HostName = hostName;
+
+            IsSiteCachingOn = isSiteCachingOn;
+
+            ViewService = p_oViewService
+                ?? throw new ArgumentException($"Can not instantiate {typeof(WhatsNewViewModel)}-object. No view available.");
+
+            ResourceProvider = resourceProvider
+                ?? throw new ArgumentException($"Can not instantiate {typeof(WhatsNewViewModel)}-object. No ressource provider availalbe.");
+        }
+
+        /// <summary> Gets the platfrom specific prefix. </summary>
+        private Func<string, string> ResourceProvider { get; set; }
+
+        /// <summary> Agb information text.</summary>
+        private HtmlWebViewSource infoAgb;
+
+        /// <summary> Agb information text.</summary>
+        public HtmlWebViewSource InfoAgb
+        {
+            get => infoAgb;
+            set
+            {
+                infoAgb = value;
+                PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(InfoAgb)));
+            }
+        }
+
+        /// <summary> Called when page is shown. </summary>
+        public async Task OnAppearing()
+        {
+            InfoAgb = await InfoViewModel.GetAgb(HostName, IsSiteCachingOn, ResourceProvider);
+        }
+
+        /// <summary> User clicks OK button.</summary>
+        public ICommand OnOk
+        {
+            get
+            {
+                return new Command(async () => await ViewService.PopModalAsync());
+            }
+        }
+
+        /// <summary> Reference to view service object.</summary>
+        private IViewService ViewService;
+    }
+}