DYN-5656 Dynamo UI Blocking Action

src/DynamoCoreWpf/Views/Core/DynamoView.xaml.cs

@@ -42,6 +42,7 @@
 using Dynamo.Wpf.Views;
 using Dynamo.Wpf.Views.Debug;
 using Dynamo.Wpf.Views.FileTrust;
+using Dynamo.Wpf.Views.GuidedTour;
 using Dynamo.Wpf.Windows;
 using HelixToolkit.Wpf.SharpDX;
 using ICSharpCode.AvalonEdit;
@@ -2317,7 +2318,45 @@ private void HandlePackageManagerWindowClosed(object sender, EventArgs e)
 
         internal void EnableEnvironment(bool isEnabled)
         {
-            this.mainGrid.IsEnabled = isEnabled;
+            this.mainGrid.IsEnabled = isEnabled;       
+        }
+
+        /// <summary>
+        /// Adds/Removes an overlay so the user won't be able to interact with the background (this behavior was implemented for Dynamo and for Library)
+        /// </summary>
+        /// <param name="isEnabled">True if the overlay is enable otherwise will be false</param>
+        internal void EnableOverlayBlocker(bool isEnabled)
+        {
+            object[] parametersInvokeScript = new object[] { "fullOverlayVisible", new object[] { isEnabled } };
+            ResourceUtilities.ExecuteJSFunction(this, parametersInvokeScript);
+
+            if (isEnabled)
+            {
+                //By default the shortcutsBarGrid has a ZIndex = 1 then will be shown over the overlay that's why we need to change the ZIndex
+                Panel.SetZIndex(shortcutsBarGrid, 0);
+                var backgroundElement = new GuideBackground(this)
+                {
+                    Name = "BackgroundBlocker",
+                    HorizontalAlignment = HorizontalAlignment.Left,
+                    VerticalAlignment = VerticalAlignment.Top,
+                    Visibility = Visibility.Visible
+                };
+
+                //adds the overlay to the main Dynamo grid
+                mainGrid.Children.Add(backgroundElement);
+                Grid.SetColumnSpan(backgroundElement, mainGrid.ColumnDefinitions.Count);
+                Grid.SetRowSpan(backgroundElement, mainGrid.RowDefinitions.Count);
+            }
+            else
+            {
+                //Restoring the ZIndex value to the default one.
+                Panel.SetZIndex(shortcutsBarGrid, 1);
+                var backgroundElement = mainGrid.Children.OfType<GuideBackground>().FirstOrDefault();
+                if (backgroundElement != null)
+                {
+                    mainGrid.Children.Remove(backgroundElement);
+                }
+            }
         }
 
         /// <summary>

src/DynamoCoreWpf/Views/Menu/PreferencesView.xaml.cs

@@ -98,6 +98,7 @@ public PreferencesView(DynamoView dynamoView)
             stylesCustomColors = new ObservableCollection<CustomColorItem>();
             UpdateZoomScaleValueLabel(LibraryZoomScalingSlider, lblZoomScalingValue);
             UpdateZoomScaleValueLabel(PythonZoomScalingSlider, lblPythonScalingValue);
+            dynamoView.EnableOverlayBlocker(true);
         }
 
         /// <summary>
@@ -171,6 +172,7 @@ private void CloseButton_Click(object sender, RoutedEventArgs e)
 
             dynViewModel.PreferencesViewModel.TrustedPathsViewModel.PropertyChanged -= TrustedPathsViewModel_PropertyChanged;
             dynViewModel.CheckCustomGroupStylesChanges(originalCustomGroupStyles);
+            (this.Owner as DynamoView).EnableOverlayBlocker(false);
 
             Close();
         }

src/DynamoCoreWpf/Views/PackageManager/PackageManagerView.xaml.cs

@@ -68,6 +68,7 @@ public PackageManagerView(DynamoView dynamoView, PackageManagerViewModel package
                 Categories.PackageManager);
 
             this.dynamoView = dynamoView;
+            dynamoView.EnableOverlayBlocker(true);
         }
 
         private void OnRequestShowFileDialog(object sender, PackagePathEventArgs e)
@@ -130,6 +131,7 @@ private void PackageManagerPanel_MouseDown(object sender, MouseButtonEventArgs e
         private void CloseButton_Click(object sender, RoutedEventArgs e)
         {
             Analytics.TrackEvent(Actions.Close, Categories.PackageManager);
+            (this.Owner as DynamoView).EnableOverlayBlocker(false);
 
             Close();
         }

src/LibraryViewExtensionWebView2/web/library/library.html

@@ -88,11 +88,25 @@
             margin-top: 0.15rem;
             vertical-align: top !important;
         }
+
+        #overlay {
+            position: fixed;
+            display: none;
+            width: 100%;
+            height: 100%;
+            top: 0;
+            left: 0;
+            right: 0;
+            bottom: 0;
+            background-color: rgba(0,0,0,0.5);
+            z-index: 2;
+        }
     </style>
 
 </head>
 
 <body onresize="bodyResizeEvent()">
+    <div id="overlay"></div>
     <!-- Placeholders must exist before all other scripts that try to access them -->
     <div class="OuterMostContainer" id="libraryContainerPlaceholder"></div>
     <!-- The main library view component -->
@@ -413,6 +427,14 @@
 
             document.dispatchEvent(kbEvent);
         }
+
+        //This function will show the overlay over the Library when the Preferences/PackageManagerSearch are opened otherwiser is not visible
+        function fullOverlayVisible(enableOverlay) {
+            if (enableOverlay)
+                document.getElementById("overlay").style.display = "block";
+            else
+                document.getElementById("overlay").style.display = "none";
+        }
     </script>
 
 </body>