Fix back button and context menu handling with a video playing

Core/FormBrowser.cs

@@ -398,7 +398,7 @@ protected override void WndProc(ref Message m){
                 }
             }
             
-            if (isBrowserReady && m.Msg == NativeMethods.WM_PARENTNOTIFY && (m.WParam.ToInt32() & 0xFFFF) == NativeMethods.WM_XBUTTONDOWN){
+            if (isBrowserReady && m.Msg == NativeMethods.WM_PARENTNOTIFY && (m.WParam.ToInt32() & 0xFFFF) == NativeMethods.WM_XBUTTONDOWN && !(videoPlayer?.Running ?? false)){
                 browser.ExecuteScriptAsync("TDGF_onMouseClickExtra", (m.WParam.ToInt32() >> 16) & 0xFFFF);
                 return;
             }
@@ -509,16 +509,16 @@ public void PlayNotificationSound(){
         }
 
         public void PlayVideo(string url){
+            if (string.IsNullOrEmpty(url)){
+                videoPlayer?.Close();
+                return;
+            }
+
             if (videoPlayer == null){
                 videoPlayer = new VideoPlayer(this);
             }
-
-            if (!string.IsNullOrEmpty(url)){
-                videoPlayer.Launch(url);
-            }
-            else{
-                videoPlayer.Close();
-            }
+            
+            videoPlayer.Launch(url);
         }
 
         public void OnTweetScreenshotReady(string html, int width, int height){

Core/Other/Media/VideoPlayer.cs

@@ -8,6 +8,17 @@ namespace TweetDuck.Core.Other.Media{
     class VideoPlayer{
         private readonly string PlayerExe = Path.Combine(Program.ProgramPath, "TweetDuck.Video.exe");
 
+        public bool Running{
+            get{
+                if (currentProcess == null){
+                    return false;
+                }
+
+                currentProcess.Refresh();
+                return !currentProcess.HasExited;
+            }
+        }
+
         private readonly Form owner;
         private Process currentProcess;
         private string lastUrl;

Resources/Scripts/code.js

@@ -791,7 +791,7 @@
   //
   (function(){
     var playVideo = function(url){
-      $('<div class="ovl" style="display:block"></div>').click(function(){
+      $('<div class="ovl" style="display:block"></div>').on("click contextmenu", function(){
         $TD.playVideo(null);
         $(this).remove();
       }).appendTo(app);