From c0e1203313b67e7f24085bcddb03986310999f0f Mon Sep 17 00:00:00 2001
From: "Frank A. Krueger" <fak@praeclarum.org>
Date: Fri, 23 Mar 2018 17:18:25 -0700
Subject: [PATCH] Scaffold isolated storage to enable UriImageSources

This is a broken implementation that is only enough to enable
URI images.

Fixes #104
---
 Ooui.Forms/Forms.cs                    |  2 +-
 Ooui.Forms/LocalIsolatedStorageFile.cs | 40 ++++++++++++++++++++++++++
 2 files changed, 41 insertions(+), 1 deletion(-)
 create mode 100644 Ooui.Forms/LocalIsolatedStorageFile.cs

diff --git a/Ooui.Forms/Forms.cs b/Ooui.Forms/Forms.cs
index a10929f..7e87aa3 100644
--- a/Ooui.Forms/Forms.cs
+++ b/Ooui.Forms/Forms.cs
@@ -96,7 +96,7 @@ namespace Xamarin.Forms
 
             public IIsolatedStorageFile GetUserStoreForApplication ()
             {
-                throw new NotImplementedException ();
+                return new LocalIsolatedStorageFile ();
             }
 
             public void OpenUriAction (Uri uri)
diff --git a/Ooui.Forms/LocalIsolatedStorageFile.cs b/Ooui.Forms/LocalIsolatedStorageFile.cs
new file mode 100644
index 0000000..0d8650c
--- /dev/null
+++ b/Ooui.Forms/LocalIsolatedStorageFile.cs
@@ -0,0 +1,40 @@
+using System;
+using System.IO;
+using System.Threading.Tasks;
+using Xamarin.Forms.Internals;
+
+namespace Ooui.Forms
+{
+    public class LocalIsolatedStorageFile : IIsolatedStorageFile
+    {
+        public Task CreateDirectoryAsync (string path)
+        {
+            return Task.FromResult<object> (null);
+        }
+
+        public Task<bool> GetDirectoryExistsAsync (string path)
+        {
+            return Task.FromResult<bool> (true);
+        }
+
+        public Task<bool> GetFileExistsAsync (string path)
+        {
+            return Task.FromResult<bool> (false);
+        }
+
+        public Task<DateTimeOffset> GetLastWriteTimeAsync (string path)
+        {
+            throw new NotSupportedException ();
+        }
+
+        public Task<Stream> OpenFileAsync (string path, Xamarin.Forms.Internals.FileMode mode, Xamarin.Forms.Internals.FileAccess access)
+        {
+            throw new NotSupportedException ();
+        }
+
+        public Task<Stream> OpenFileAsync (string path, Xamarin.Forms.Internals.FileMode mode, Xamarin.Forms.Internals.FileAccess access, Xamarin.Forms.Internals.FileShare share)
+        {
+            throw new NotSupportedException ();
+        }
+    }
+}