UnityEditor.RectSelection.UpdateSelection C# (CSharp) Method

        private static void UpdateSelection(Object[] existingSelection, Object newObject, SelectionType type, bool isRectSelection)
        {
            Object[] objArray;
            if (newObject == null)
            {
                objArray = new Object[0];
            }
            else
            {
                objArray = new Object[] { newObject };
            }
            UpdateSelection(existingSelection, objArray, type, isRectSelection);
        }

        private void TryOneClickDrag()
        {
            EventType type = Event.current.type;

            if (type == EventType.MouseDown)
            {
                UnityEngine.Object @object = HandleUtility.PickGameObject(Event.current.mousePosition, true);
                if (@object)
                {
                    GameObject   gameObject  = @object as GameObject;
                    bool         flag        = false;
                    GameObject[] gameObjects = Selection.gameObjects;
                    for (int i = 0; i < gameObjects.Length; i++)
                    {
                        GameObject y = gameObjects[i];
                        if (gameObject == y)
                        {
                            flag = true;
                            break;
                        }
                    }
                    if (!flag && gameObject.GetComponent <SpriteRenderer>() != null)
                    {
                        RectSelection.UpdateSelection(this.m_SelectionStart, @object, RectSelection.SelectionType.Normal, this.m_RectSelecting);
                        SceneView.lastActiveSceneView.m_OneClickDragObject = @object;
                        Event.current.Use();
                    }
                }
            }
        }