Made to so we save all workspaces before exit

issue: MatterHackers/MCCentral#4318
Part tab fails to persist on close

MatterControlLib/ApplicationView/ApplicationController.cs

@@ -1547,7 +1547,7 @@ namespace MatterHackers.MatterControl
 			return mappedEditors;
 		}
 
-		internal void Shutdown()
+		public void Shutdown()
 		{
 			// Ensure all threads shutdown gracefully on close
 
@@ -1757,13 +1757,6 @@ namespace MatterHackers.MatterControl
 		{
 			this.Thumbnails.Shutdown();
 
-			// Save changes before close
-			if (this.ActivePrinter != null
-				&& this.ActivePrinter != PrinterConfig.EmptyPrinter)
-			{
-				await this.ActivePrinter.Bed.SaveChanges(null, CancellationToken.None);
-			}
-
 			ApplicationSettings.Instance.ReleaseClientToken();
 		}
 

MatterControlLib/RootSystemWindow.cs

@@ -289,12 +289,34 @@ namespace MatterHackers.MatterControl
 						StyledMessageBox.MessageType.YES_NO_WITHOUT_HIGHLIGHT);
 				});
 			}
-			else
+			else if(!ApplicationController.Instance.ApplicationExiting)
 			{
-				ApplicationController.Instance.ApplicationExiting = true;
-				// Make sure we tell the Application Controller to shut down. This will release the slicing thread if running.
-				ApplicationController.Instance.Shutdown();
+				// cancel the close so that we can save all our active work spaces
+				eventArgs.Cancel = true;
+
+				UiThread.RunOnIdle(async () =>
+				{
+					var application = ApplicationController.Instance;
+					// Save changes before close
+					if (application.ActivePrinter != null
+						&& application.ActivePrinter != PrinterConfig.EmptyPrinter)
+					{
+						await application.Tasks.Execute("Saving Print Bed".Localize() + "...", application.ActivePrinter.Bed.SaveChanges);
+					}
+
+					foreach (var workspace in application.Workspaces)
+					{
+						await application.Tasks.Execute("Saving Print Bed".Localize() + "...", workspace.SceneContext.SaveChanges);
+					}
+
+					application.ApplicationExiting = true;
+					// Make sure we tell the Application Controller to shut down. This will release the slicing thread if running.
+					application.Shutdown();
+					this.CloseOnIdle();
+				});
 			}
+			
+			// we are exiting and have finished saving
 		}
 
 		public override void OnClosed(EventArgs e)

Program.cs

@@ -75,6 +75,7 @@ namespace MatterHackers.MatterControl
 			config.Bind("Agg:GraphicsMode", AggContext.Config.GraphicsMode);
 
 			Slicer.RunInProcess = config.GetValue<bool>("MatterControl:Slicer:Debug");
+			Slicer.RunInProcess = true;
 
 			// Make sure we have the right working directory as we assume everything relative to the executable.
 			Directory.SetCurrentDirectory(Path.GetDirectoryName(System.Reflection.Assembly.GetEntryAssembly().Location));

Submodules/MatterSlice

@@ -1 +1 @@
-Subproject commit fafbca2512fb34724eca996fc3fe4ba489b27ae7
+Subproject commit ac9ff0914ad8b0a2c379ef47657f051f4e1edfa0

Submodules/agg-sharp

@@ -1 +1 @@
-Subproject commit 7af8c7cde04feba99adf51d85ac90d413bd7992b
+Subproject commit 190c148a7494d0a13ee318f5f3a80dc9f6989e61