- Add support for filtering by category

- Break up main window into partials instead of using regions

Application/MainWindow/Header.cs

@@ -0,0 +1,32 @@
+using FeedCenter.Properties;
+using System.Windows;
+using System.Windows.Input;
+
+namespace FeedCenter
+{
+    public partial class MainWindow
+    {
+        private void HandleHeaderLabelMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
+        {
+            // Ignore if the window is locked
+            if (Settings.Default.WindowLocked)
+                return;
+
+            // Start dragging
+            DragMove();
+        }
+
+        private void HandleCloseButtonClick(object sender, RoutedEventArgs e)
+        {
+            // Close the window
+            Close();
+        }
+
+        private void HandleFeedLabelMouseDown(object sender, MouseButtonEventArgs e)
+        {
+            // Open the link for the current feed on a left double click
+            if (e.ClickCount == 2 && e.ChangedButton == MouseButton.Left)
+                BrowserCommon.OpenLink(_currentFeed.Link);
+        }
+    }
+}