New database setting page

(Database) Settings available from Main menu

ModernKeePass/ViewModels/Items/SettingsNewVm.cs

@@ -0,0 +1,47 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Windows.Storage;
+using ModernKeePassLib.Cryptography.KeyDerivation;
+
+namespace ModernKeePass.ViewModels
+{
+    public class SettingsNewVm
+    {
+        private readonly ApplicationDataContainer _localSettings = ApplicationData.Current.LocalSettings;
+
+        public bool IsCreateSample
+        {
+            get { return GetSetting<bool>("Sample"); }
+            set { PutSetting("Sample", value); }
+        }
+
+        public IEnumerable<string> KeyDerivations => KdfPool.Engines.Select(e => e.Name);
+
+        public string KeyDerivationName
+        {
+            get { return GetSetting<string>("KeyDerivation"); }
+            set { PutSetting("KeyDerivation", value); }
+        }
+
+        // TODO: Move this to a common class
+        private T GetSetting<T>(string property)
+        {
+            try
+            {
+                return (T)Convert.ChangeType(_localSettings.Values[property], typeof(T));
+            }
+            catch (InvalidCastException)
+            {
+                return default(T);
+            }
+        }
+
+        private void PutSetting<T>(string property, T value)
+        {
+            if (_localSettings.Values.ContainsKey(property))
+                _localSettings.Values[property] = value;
+            else _localSettings.Values.Add(property, value);
+        }
+    }
+}