public void RebuildSections(Blackboard blackboard)
        {
            m_Store = blackboard.Store;
            var currentGraphModel = (VSGraphModel)blackboard.Store.GetState().CurrentGraphModel;

            blackboard.ClearContents();

            if (blackboard.Sections != null && blackboard.Sections.Count > 1)
            {
                blackboard.Sections[k_InputPortDeclarationsSection].title  = k_InputPortDeclarationsSectionTitle;
                blackboard.Sections[k_OutputPortDeclarationsSection].title = k_OutputPortDeclarationsSectionTitle;
            }

            if (currentGraphModel.NodeModels == null)
            {
                return;
            }

            foreach (VariableDeclarationModel declaration in currentGraphModel.VariableDeclarations)
            {
                var blackboardField = new BlackboardVariableField(blackboard.Store, declaration, blackboard.GraphView);
                var blackboardRow   = new BlackboardRow(
                    blackboardField,
                    new BlackboardVariablePropertyView(blackboard.Store, declaration, blackboard.Rebuild, m_Stencil)
                    .WithTypeSelector()
                    .WithTooltipField())
                {
                    Model    = declaration,
                    expanded = true, // TODO not pretty
                };
                if (blackboard.Sections != null)
                {
                    switch (declaration.Modifiers)
                    {
                    case ModifierFlags.ReadOnly:
                        blackboard.Sections[k_InputPortDeclarationsSection].Add(blackboardRow);
                        break;

                    case ModifierFlags.WriteOnly:
                        blackboard.Sections[k_OutputPortDeclarationsSection].Add(blackboardRow);
                        break;
                    }
                }
                blackboard.GraphVariables.Add(blackboardField);
            }
        }
        public void RebuildSections(Blackboard blackboard)
        {
            VSGraphModel currentGraphModel = (VSGraphModel)blackboard.Store.GetState().CurrentGraphModel;

            Dictionary <IVariableDeclarationModel, bool> expandedRows = new Dictionary <IVariableDeclarationModel, bool>();

            foreach (BlackboardSection blackBoardSection in blackboard.Sections)
            {
                foreach (VisualElement visualElement in blackBoardSection.Children())
                {
                    if (visualElement is BlackboardRow row)
                    {
                        if (row.Model is IVariableDeclarationModel model)
                        {
                            expandedRows[model] = row.expanded;
                        }
                    }
                }
            }

            blackboard.ClearContents();

            if (CanDisplayThisToken)
            {
                var thisNodeModel = currentGraphModel.NodeModels.OfType <ThisNodeModel>().FirstOrDefault();
                var thisField     = new BlackboardThisField(blackboard.GraphView, thisNodeModel, currentGraphModel);
                blackboard.Sections[k_MainSection].Add(thisField);
                blackboard.GraphVariables.Add(thisField);
                blackboard.RestoreSelectionForElement(thisField);
            }

            // Fetch all fields from the GraphModel in the main section
            foreach (IVariableDeclarationModel variableDeclarationModel in ((IVSGraphModel)currentGraphModel).GraphVariableModels)
            {
                var blackboardField = new BlackboardVariableField(blackboard.Store, variableDeclarationModel, blackboard.GraphView);
                var blackboardRow   = new BlackboardRow(
                    blackboardField,
                    CreateExtendedFieldView(blackboard.Store, variableDeclarationModel, blackboard.Rebuild))
                {
                    Model    = variableDeclarationModel,
                    expanded = expandedRows.TryGetValue(variableDeclarationModel, out var expandedValue) && expandedValue
                };
                blackboard.Sections[k_MainSection].Add(blackboardRow);
                blackboard.GraphVariables.Add(blackboardField);
                blackboard.RestoreSelectionForElement(blackboardField);
            }

            if (blackboard.selection != null)
            {
                // Fill local scope section
                foreach (Tuple <IVariableDeclarationModel, bool> variableDeclarationModelTuple in blackboard.GraphView.UIController
                         .GetAllVariableDeclarationsFromSelection(blackboard.selection))
                {
                    var blackboardField = new BlackboardVariableField(blackboard.Store, variableDeclarationModelTuple.Item1, blackboard.GraphView);

                    if (variableDeclarationModelTuple.Item2)
                    {
                        var blackboardRow = new BlackboardRow(
                            blackboardField,
                            CreateExtendedFieldView(blackboard.Store, variableDeclarationModelTuple.Item1, blackboard.Rebuild))
                        {
                            userData = variableDeclarationModelTuple,
                            expanded = expandedRows.TryGetValue(variableDeclarationModelTuple.Item1, out var expandedValue) && expandedValue
                        };
                        blackboard.Sections[k_CurrentScopeVariableDeclarationsSection].Add(blackboardRow);
                    }
                    else
                    {
                        blackboardField.AddToClassList("readonly");
                        blackboard.Sections[k_CurrentScopeVariableDeclarationsSection].Add(blackboardField);
                    }

                    blackboard.GraphVariables.Add(blackboardField);

                    blackboard.RestoreSelectionForElement(blackboardField);
                }
            }
        }