Flutter: использование веб-службы, предоставленной сгенерированным Dart-клиентом файлом из swaggerHub

1.Создать прикрепленное свойство

public static class DataGridCellAttachedProperties
{
    //Register new attached property
    public static readonly DependencyProperty IsSingleClickEditModeProperty =
        DependencyProperty.RegisterAttached("IsSingleClickEditMode", typeof(bool), typeof(DataGridCellAttachedProperties), new UIPropertyMetadata(false, OnPropertyIsSingleClickEditModeChanged));

    private static void OnPropertyIsSingleClickEditModeChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
    {
        var dataGridCell = d as DataGridCell;
        if (dataGridCell == null)
            return;

        var isSingleEditMode = GetIsSingleClickEditMode(d);
        var behaviors =  Interaction.GetBehaviors(d);
        var singleClickEditBehavior = behaviors.SingleOrDefault(x => x is SingleClickEditDataGridCellBehavior);

        if (singleClickEditBehavior != null && !isSingleEditMode)
            behaviors.Remove(singleClickEditBehavior);
        else if (singleClickEditBehavior == null && isSingleEditMode)
        {
            singleClickEditBehavior = new SingleClickEditDataGridCellBehavior();
            behaviors.Add(singleClickEditBehavior);
        }
    }

    public static bool GetIsSingleClickEditMode(DependencyObject obj)
    {
        return (bool) obj.GetValue(IsSingleClickEditModeProperty);
    }

    public static void SetIsSingleClickEditMode(DependencyObject obj, bool value)
    {
        obj.SetValue(IsSingleClickEditModeProperty, value);
    }
}

2.Создать поведение

public class SingleClickEditDataGridCellBehavior:Behavior<DataGridCell>
        {
            protected override void OnAttached()
            {
                base.OnAttached();
                AssociatedObject.PreviewMouseLeftButtonDown += DataGridCellPreviewMouseLeftButtonDown;
            }

            protected override void OnDetaching()
            {
                base.OnDetaching();
                AssociatedObject.PreviewMouseLeftButtonDown += DataGridCellPreviewMouseLeftButtonDown;
            }

            void DataGridCellPreviewMouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
            {
                 DataGridCell cell = sender as DataGridCell;
                if (cell != null && !cell.IsEditing && !cell.IsReadOnly)
                {
                    if (!cell.IsFocused)
                    {
                        cell.Focus();
                    }
                    DataGrid dataGrid = LogicalTreeWalker.FindParentOfType<DataGrid>(cell); //FindVisualParent<DataGrid>(cell);
                    if (dataGrid != null)
                    {
                        if (dataGrid.SelectionUnit != DataGridSelectionUnit.FullRow)
                        {
                            if (!cell.IsSelected)
                                cell.IsSelected = true;
                        }
                        else
                        {
                            DataGridRow row =  LogicalTreeWalker.FindParentOfType<DataGridRow>(cell); //FindVisualParent<DataGridRow>(cell);
                            if (row != null && !row.IsSelected)
                            {
                                row.IsSelected = true;
                            }
                        }
                    }
                }
            }    
        }

3.Создать стиль и установить прикрепленное свойство

        <Style TargetType="{x:Type DataGridCell}">
            <Setter Property="Behaviors:DataGridCellAttachedProperties.IsSingleClickEditMode" Value="True"/>
        </Style>