Add csv viewer

QuickLook.Plugin/QuickLook.Plugin.CsvViewer/Plugin.cs

@@ -0,0 +1,71 @@
+// Copyright <20> 2017 Paddy Xu
+// 
+// This file is part of QuickLook program.
+// 
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using System;
+using System.IO;
+using System.Windows;
+
+namespace QuickLook.Plugin.CsvViewer
+{
+    public class Plugin : IViewer
+    {
+        private CsvViewerPanel _panel;
+
+        public int Priority => int.MaxValue;
+        public bool AllowsTransparency => true;
+
+        public void Init()
+        {
+        }
+
+        public bool CanHandle(string path)
+        {
+            if (Directory.Exists(path))
+                return false;
+
+            return Path.GetExtension(path).ToLower() == ".csv";
+        }
+
+        public void Prepare(string path, ContextObject context)
+        {
+            context.PreferredSize = new Size {Width = 1000, Height = 700};
+        }
+
+        public void View(string path, ContextObject context)
+        {
+            _panel = new CsvViewerPanel();
+
+            context.ViewerContent = _panel;
+            context.Title = $"{Path.GetFileName(path)}";
+            _panel.LoadFile(path);
+
+            context.IsBusy = false;
+        }
+
+        public void Cleanup()
+        {
+            GC.SuppressFinalize(this);
+
+            _panel = null;
+        }
+
+        ~Plugin()
+        {
+            Cleanup();
+        }
+    }
+}