Fix hang when moving window during refresh

Application/FeedCenter.csproj

@@ -34,7 +34,7 @@
 		<PackageReference Include="ChrisKaczor.Wpf.Controls.Toolbar" Version="1.0.3" />
 		<PackageReference Include="ChrisKaczor.Wpf.Validation" Version="1.0.4" />
 		<PackageReference Include="ChrisKaczor.Wpf.Windows.ControlBox" Version="1.0.3" />
-		<PackageReference Include="ChrisKaczor.Wpf.Windows.SnappingWindow" Version="1.0.3" />
+		<PackageReference Include="ChrisKaczor.Wpf.Windows.SnappingWindow" Version="1.0.4" />
 		<PackageReference Include="Dapper" Version="2.0.123" />
 		<PackageReference Include="DebounceThrottle" Version="2.0.0" />
 		<PackageReference Include="H.NotifyIcon.Wpf" Version="2.0.108" />
@@ -44,7 +44,7 @@
 		<PackageReference Include="Microsoft.SqlServer.Compact" Version="4.0.8876.1" GeneratePathProperty="true">
 			<NoWarn>NU1701</NoWarn>
 		</PackageReference>
-		<PackageReference Include="Microsoft.Windows.Compatibility" Version="7.0.1" />
+		<PackageReference Include="Microsoft.Windows.Compatibility" Version="7.0.6" />
 		<PackageReference Include="NameBasedGrid" Version="0.10.1">
 			<NoWarn>NU1701</NoWarn>
 		</PackageReference>

Application/Feeds/Feed.cs

@@ -356,6 +356,9 @@ public partial class Feed : RealmObject, INotifyDataErrorInfo
     {
         switch (httpRequestException.StatusCode)
         {
+            case HttpStatusCode.TooManyRequests:
+                return Tuple.Create(FeedReadResult.TooManyRequests, string.Empty);
+
             case HttpStatusCode.ServiceUnavailable:
                 return Tuple.Create(FeedReadResult.TemporarilyUnavailable, string.Empty);
 

Application/Feeds/FeedReadResult.cs

@@ -15,5 +15,6 @@ public enum FeedReadResult
     ConnectionFailed,
     ServerError,
     Moved,
-    TemporarilyUnavailable
+    TemporarilyUnavailable,
+    TooManyRequests
 }

Application/MainWindow/Timer.cs

@@ -24,17 +24,18 @@ public partial class MainWindow
     {
         StopTimer();
 
-        _mainTimer.Dispose();
+        _mainTimer?.Dispose();
+        _mainTimer = null;
     }
 
     private void StartTimer()
     {
-        _mainTimer.Start();
+        _mainTimer?.Start();
     }
 
     private void StopTimer()
     {
-        _mainTimer.Stop();
+        _mainTimer?.Stop();
     }
 
     private void HandleMainTimerElapsed(object sender, EventArgs e)

Application/MainWindow/Toolbar.cs

@@ -166,6 +166,12 @@ public partial class MainWindow
 
         // Delete the feed
         _database.SaveChanges(() => _database.Feeds.Remove(feedToDelete));
+
+        // Refresh the database to current settings
+        ResetDatabase();
+
+        // Re-initialize the feed display
+        DisplayFeed();
     }
 
     private void OpenAllFeedItemsOnSinglePage()

Application/MainWindow/WindowHandler.cs

@@ -49,14 +49,14 @@ public partial class MainWindow
     {
         // Set the last window location
         Settings.Default.WindowLocation = new Point(Left, Top);
+        Settings.Default.Save();
 
         // Set the last window size
         Settings.Default.WindowSize = new Size(Width, Height);
+        Settings.Default.Save();
 
         // Save the dock on the navigation tray
         Settings.Default.ToolbarLocation = NameBasedGrid.NameBasedGrid.GetRow(NavigationToolbarTray) == "TopToolbarRow" ? Dock.Top : Dock.Bottom;
-
-        // Save settings
         Settings.Default.Save();
     }
 

Application/Properties/Resources.Designer.cs

@@ -840,6 +840,15 @@ namespace FeedCenter.Properties {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Temporarily unavailable.
+        /// </summary>
+        public static string FeedReadResult_TemporarilyUnavailable {
+            get {
+                return ResourceManager.GetString("FeedReadResult_TemporarilyUnavailable", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to Timeout.
         /// </summary>
@@ -849,6 +858,15 @@ namespace FeedCenter.Properties {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Too many requests.
+        /// </summary>
+        public static string FeedReadResult_TooManyRequests {
+            get {
+                return ResourceManager.GetString("FeedReadResult_TooManyRequests", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to Not authorized.
         /// </summary>

Application/Properties/Resources.resx

@@ -555,4 +555,10 @@ All feeds currently in category "{0}" will be moved to the default category.</va
   <data name="userAgentLabel" xml:space="preserve">
     <value>User agent</value>
   </data>
+  <data name="FeedReadResult_TemporarilyUnavailable" xml:space="preserve">
+    <value>Temporarily unavailable</value>
+  </data>
+  <data name="FeedReadResult_TooManyRequests" xml:space="preserve">
+    <value>Too many requests</value>
+  </data>
 </root>

Application/SettingsStore.cs

@@ -36,6 +36,9 @@ public static class SettingsStore
         // Try to get the setting from the database that matches the name and version
         var setting = entities.Settings.FirstOrDefault(s => s.Name == name);
 
+        if (setting?.Value == value)
+            return;
+
         entities.SaveChanges(() =>
         {
             // If there was no setting we need to create it