Remove HTML styles after copying selected text to clipboard

Core/Bridge/TweetDeckBridge.cs

@@ -166,6 +166,10 @@ public void ScreenshotTweet(string html, int width, int height){
             form.InvokeSafe(() => form.OnTweetScreenshotReady(html, width, height));
         }
 
+        public void FixClipboard(){
+            form.InvokeSafe(WindowsUtils.ClipboardStripHtmlStyles);
+        }
+
         public void OpenBrowser(string url){
             BrowserUtils.OpenExternalBrowser(url);
         }

Core/Utils/WindowsUtils.cs

@@ -1,9 +1,13 @@
 using System.Diagnostics;
 using System.IO;
+using System.Text.RegularExpressions;
 using System.Windows.Forms;
 
 namespace TweetDck.Core.Utils{
     static class WindowsUtils{
+        private static readonly Regex RegexStripHtmlStyles = new Regex(@"\s?(?:style|class)="".*?""");
+        private static readonly Regex RegexOffsetClipboardHtml = new Regex(@"(?<=EndHTML:|EndFragment:)(\d+)");
+
         public static bool CheckFolderWritePermission(string path){
             string testFile = Path.Combine(path, ".test");
 
@@ -39,5 +43,19 @@ public static Timer CreateSingleTickTimer(int timeout){
             timer.Tick += (sender, args) => timer.Stop();
             return timer;
         }
+
+        public static void ClipboardStripHtmlStyles(){
+            if (!Clipboard.ContainsText(TextDataFormat.Html)){
+                return;
+            }
+
+            string original = Clipboard.GetText(TextDataFormat.Html);
+            string updated = RegexStripHtmlStyles.Replace(original, string.Empty);
+
+            int removed = original.Length-updated.Length;
+            updated = RegexOffsetClipboardHtml.Replace(updated, match => (int.Parse(match.Value)-removed).ToString().PadLeft(match.Value.Length, '0'));
+
+            Clipboard.SetText(updated, TextDataFormat.Html);
+        }
     }
 }

Resources/Scripts/code.js

@@ -524,6 +524,13 @@
     });
   })();
   
+  //
+  // Block: Work around clipboard HTML formatting.
+  //
+  $(document).on("copy", function(e){
+    window.setTimeout($TD.fixClipboard, 0);
+  });
+  
   //
   // Block: Inject custom CSS and layout into the page.
   //