- Add support for filtering by category

- Break up main window into partials instead of using regions

Application/MainWindow/CommandLine.cs

@@ -0,0 +1,42 @@
+using Common.IO;
+using System;
+
+namespace FeedCenter
+{
+    public partial class MainWindow
+    {
+        private InterprocessMessageListener _commandLineListener;
+
+        private void HandleCommandLine(object sender, InterprocessMessageListener.InterprocessMessageEventArgs e)
+        {
+            // If the command line is blank then ignore it
+            if (e.Message.Length == 0)
+                return;
+
+            // Pad the command line with a trailing space just to be lazy in parsing
+            var commandLine = e.Message + " ";
+
+            // Look for the feed URL in the command line
+            var startPosition = commandLine.IndexOf("feed://", StringComparison.Ordinal);
+
+            // If we found one then we should extract and process it
+            if (startPosition > 0)
+            {
+                // Advance past the protocol
+                startPosition += 7;
+
+                // Starting at the URL position look for the next space
+                var endPosition = commandLine.IndexOf(" ", startPosition, StringComparison.Ordinal);
+
+                // Extract the feed URL
+                var feedUrl = commandLine.Substring(startPosition, endPosition - startPosition);
+
+                // Add the HTTP protocol by default
+                feedUrl = "http://" + feedUrl;
+
+                // Create a new feed using the URL
+                HandleNewFeed(feedUrl);
+            }
+        }
+    }
+}