Rename solution directory to Elwig

Elwig/Windows/DocumentViewerWindow.xaml.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Windows;
+using Elwig.Helpers;
+
+namespace Elwig.Windows {
+    public partial class DocumentViewerWindow : Window {
+
+        private TempFile? PdfFile = null;
+
+        public DocumentViewerWindow(string title, string path) {
+            InitializeComponent();
+            Title = Title + " - " + title;
+            WebView.Source = new($"file://{path}#view=FitH");
+        }
+
+        public DocumentViewerWindow(string title, TempFile file) : this(title, file.FilePath) {
+            PdfFile = file;
+        }
+
+        public void OnClosed(object sender, EventArgs evt) {
+            PdfFile?.Dispose();
+            PdfFile = null;
+        }
+    }
+}