private static void MoveReferencedFileToDirectory(ReferencedFileSave referencedFileSave, string targetDirectory)
        {
            // Things to do:
            // 1 Move the TreeNode from one parent TreeNode to another UPDATE:  We will just refresh the UI for the Element or GlobalContent
            // 2 Move the file from one folder to another
            // 3 Remove the BuildItems from the project and add them back in the VisualStudio project
            // 4 Change the ReferencedFileSave's name
            // 5 Re-generate the containing Element (Screen or Entity)
            // 6 Save everything

            string oldNodeText = referencedFileSave.Name.Replace("/", "\\");



            string newNodeText = FlatRedBall.IO.FileManager.MakeRelative(targetDirectory, ProjectManager.ProjectBase.GetAbsoluteContentFolder()) + FileManager.RemovePath(referencedFileSave.Name);

            newNodeText = newNodeText.Replace("/", "\\");

            string oldFileName = ProjectManager.MakeAbsolute(referencedFileSave.Name, true);
            string targetFile  = targetDirectory + FileManager.RemovePath(oldFileName);

            bool canMove = true;

            // There's so much error checking and validation that we
            // could/should do here, but man, I just can't spend forever
            // on it because I need to get the game I'm working on moving forward
            // But I'm going to at least improve it a little bit by having the referenced
            // files get copied over.
            Dictionary <string, string> mOldNewDependencyFileDictionary = new Dictionary <string, string>();
            List <string> referencedFiles  = ContentParser.GetFilesReferencedByAsset(oldFileName, TopLevelOrRecursive.Recursive);
            string        oldDirectoryFull = FileManager.GetDirectory(oldFileName);

            foreach (string file in referencedFiles)
            {
                string relativeToRfs = FileManager.MakeRelative(file, FileManager.GetDirectory(oldFileName));

                string targetReferencedFileName = targetDirectory + relativeToRfs;

                mOldNewDependencyFileDictionary.Add(file, targetReferencedFileName);

                if (!FileManager.IsRelativeTo(targetReferencedFileName, targetDirectory))
                {
                    MessageBox.Show("The file\n\n" + file + "\n\nis not relative to the file being moved, so it cannot be moved.  You must manually move these files and manually update the file reference.");
                    canMove = false;
                    break;
                }
            }


            if (canMove && File.Exists(targetFile))
            {
                MessageBox.Show("There is already a file by this name located in the directory you're trying to move to.");
                canMove = false;
            }
            if (canMove)
            {
                foreach (KeyValuePair <string, string> kvp in mOldNewDependencyFileDictionary)
                {
                    if (File.Exists(kvp.Value))
                    {
                        MessageBox.Show("Can't move the file because a dependency will be moved to\n\n" + kvp.Value + "\n\nand a file already exists there.");
                        canMove = false;
                        break;
                    }
                }
            }

            if (canMove)
            {
                // 1 Move the TreeNode from one parent TreeNode to another
                //treeNodeMoving.Parent.Nodes.Remove(treeNodeMoving);
                //targetNode.Nodes.Add(treeNodeMoving);
                // This is updated at the bottom of this method


                // In case it doesn't exist
                System.IO.Directory.CreateDirectory(FileManager.GetDirectory(targetFile));

                // 2 Move the file from one folder to another
                File.Move(oldFileName, targetFile);
                foreach (KeyValuePair <string, string> kvp in mOldNewDependencyFileDictionary)
                {
                    File.Move(kvp.Key, kvp.Value);
                }


                // 3 Remove the BuildItems from the project and add them back in the VisualStudio project
                ProjectBase projectBase = ProjectManager.ProjectBase;
                if (ProjectManager.ContentProject != null)
                {
                    projectBase = ProjectManager.ContentProject;
                }

                ProjectManager.RemoveItemFromProject(projectBase, oldNodeText, false);
                projectBase.AddContentBuildItem(targetFile);
                foreach (KeyValuePair <string, string> kvp in mOldNewDependencyFileDictionary)
                {
                    string fileFileRelativeToProject = FileManager.MakeRelative(kvp.Key, projectBase.Directory);

                    ProjectManager.RemoveItemFromProject(projectBase, fileFileRelativeToProject, false);
                    projectBase.AddContentBuildItem(kvp.Value);
                }
                // TODO:  This should also check to see if something else is referencing this content.
                // I'm going to write it to not make this check now since I'm just getting the initial system set up



                // 4 Change the ReferencedFileSave's name
                referencedFileSave.SetNameNoCall(newNodeText.Replace("\\", "/"));
                // No need for this, it'll get updated automatically
                // treeNodeMoving.Text = newNodeText;



                // 5 Re-generate the containing Element (Screen or Entity)
                if (EditorLogic.CurrentElement != null)
                {
                    CodeWriter.GenerateCode(EditorLogic.CurrentElement);
                }
                else
                {
                    GlobalContentCodeGenerator.UpdateLoadGlobalContentCode();
                }


                // The new 1:  Update
                if (EditorLogic.CurrentElement != null)
                {
                    EditorLogic.CurrentElementTreeNode.UpdateReferencedTreeNodes();
                }
                else
                {
                    ElementViewWindow.UpdateGlobalContentTreeNodes(false);
                }


                // 6 Save everything
                GluxCommands.Self.SaveGlux();
                ProjectManager.SaveProjects();
            }
        }
        private static void MoveReferencedFile(TreeNode treeNodeMoving, TreeNode targetNode)
        {
            var response = GeneralResponse.SuccessfulResponse;

            while (targetNode != null && targetNode.IsReferencedFile())
            {
                targetNode = targetNode.Parent;
            }
            // If the user drops a file on a Screen or Entity, let's allow them to
            // complete the operation on the Files node
            if (targetNode is BaseElementTreeNode)
            {
                targetNode = ((BaseElementTreeNode)targetNode).FilesTreeNode;
            }

            ReferencedFileSave referencedFileSave = treeNodeMoving.Tag as ReferencedFileSave;

            if (!targetNode.IsFilesContainerNode() &&
                !targetNode.IsFolderInFilesContainerNode() &&
                !targetNode.IsFolderForGlobalContentFiles() &&
                !targetNode.IsNamedObjectNode() &&
                !targetNode.IsRootNamedObjectNode())
            {
                response.Fail(@"Can't drop this file here");
            }
            else if (!string.IsNullOrEmpty(referencedFileSave.SourceFile) ||
                     referencedFileSave.SourceFileCache.Count != 0)
            {
                response.Fail("Can't move the file\n\n" + referencedFileSave.Name + "\n\nbecause it has source-referencing files.  These sources will be broken " +
                              "if the file is moved.  You will need to manually move the file, modify the source references, remove this file, then add the newly-created file.");
            }

            if (response.Succeeded)
            {
                if (targetNode.IsGlobalContentContainerNode())
                {
                    if (targetNode.GetContainingElementTreeNode() == null)
                    {
                        string targetDirectory = ProjectManager.MakeAbsolute(targetNode.GetRelativePath(), true);
                        MoveReferencedFileToDirectory(referencedFileSave, targetDirectory);
                    }
                    else
                    {
                        DragAddFileToGlobalContent(treeNodeMoving, referencedFileSave);
                        // This means the user wants to add the file
                        // to global content.
                    }
                }
                else if (targetNode.IsFolderForGlobalContentFiles())
                {
                    string targetDirectory = ProjectManager.MakeAbsolute(targetNode.GetRelativePath(), true);
                    MoveReferencedFileToDirectory(referencedFileSave, targetDirectory);
                }
                else if (targetNode.IsRootNamedObjectNode())
                {
                    AddObjectViewModel viewModel = new AddObjectViewModel();
                    viewModel.SourceType = SourceType.File;
                    viewModel.SourceFile = (treeNodeMoving.Tag as ReferencedFileSave).Name;
                    GlueCommands.Self.DialogCommands.ShowAddNewObjectDialog(viewModel);
                }
                else if (targetNode.IsNamedObjectNode() &&
                         // dropping on an object in the same element
                         targetNode.GetContainingElementTreeNode() == treeNodeMoving.GetContainingElementTreeNode())
                {
                    response = HandleDroppingFileOnObjectInSameElement(targetNode, referencedFileSave);
                }

                //if (targetNode.IsFolderInFilesContainerNode() || targetNode.IsFilesContainerNode())
                else
                {
                    // See if we're moving the RFS from one Element to another
                    IElement container = ObjectFinder.Self.GetElementContaining(referencedFileSave);
                    TreeNode elementTreeNodeDroppingIn = targetNode.GetContainingElementTreeNode();
                    IElement elementDroppingIn         = null;
                    if (elementTreeNodeDroppingIn != null)
                    {
                        // User didn't drop on an entity, but instead on a node within the entity.
                        // Let's check if it's a subfolder. If so, we need to tell the user that we
                        // can't add the file in a subfolder.

                        if (targetNode.IsFolderInFilesContainerNode())
                        {
                            response.Message = "Shared files cannot be added to subfolders, so it will be added directly to \"Files\"";
                        }

                        elementDroppingIn = elementTreeNodeDroppingIn.Tag as IElement;
                    }

                    if (container != elementDroppingIn)
                    {
                        // Make sure the target element is not named the same as the file itself.
                        // For example, dropping a file called Level1.tmx in a screen called Level1.
                        // This will not compile so we shouldn't allow it.

                        var areNamedTheSame = elementDroppingIn.GetStrippedName() == referencedFileSave.GetInstanceName();

                        if (areNamedTheSame)
                        {
                            response.Fail($"The file {referencedFileSave.GetInstanceName()} has the same name as the target screen. it will not be added since this is not allowed.");
                        }

                        if (response.Succeeded)
                        {
                            ElementViewWindow.SelectedNode = targetNode;

                            string absoluteFileName = ProjectManager.MakeAbsolute(referencedFileSave.Name, true);
                            string creationReport;
                            string errorMessage;

                            var newlyCreatedFile = ElementCommands.Self.CreateReferencedFileSaveForExistingFile(elementDroppingIn, null, absoluteFileName,
                                                                                                                PromptHandleEnum.Prompt,
                                                                                                                referencedFileSave.GetAssetTypeInfo(),
                                                                                                                out creationReport,
                                                                                                                out errorMessage);

                            ElementViewWindow.UpdateChangedElements();

                            if (!String.IsNullOrEmpty(errorMessage))
                            {
                                MessageBox.Show(errorMessage);
                            }
                            else if (newlyCreatedFile != null)
                            {
                                GlueCommands.Self.TreeNodeCommands.SelectTreeNode(newlyCreatedFile);
                            }
                        }
                    }
                    else
                    {
                        // Not moving into or out of an element
                        string targetDirectory = ProjectManager.MakeAbsolute(targetNode.GetRelativePath(), true);
                        MoveReferencedFileToDirectory(referencedFileSave, targetDirectory);
                    }
                }
            }

            if (!string.IsNullOrEmpty(response.Message))
            {
                MessageBox.Show(response.Message);
            }
        }