/// <summary>
        /// 创建下一步活动的节点
        /// </summary>
        /// <param name="activity"></param>
        /// <returns></returns>
        internal static NextActivityComponent CreateNextActivityComponent(TransitionEntity transition,
                                                                          ActivityEntity activity)
        {
            NextActivityComponent component = null;

            if (XPDLHelper.IsSimpleComponentNode(activity.ActivityType) == true)           //可流转简单类型节点
            {
                string name = "单一节点";
                component = new NextActivityItem(name, transition, activity);
            }
            else if (activity.ActivityType == ActivityTypeEnum.SubProcessNode)
            {
                string name = "子流程节点";
                component = new NextActivityItem(name, transition, activity);
            }
            else
            {
                string name = string.Empty;
                if (activity.GatewayDirectionType == NETBPMFlow.Engine.Common.GatewayDirectionEnum.AndSplit)
                {
                    name = "必全选节点";
                }
                else if (activity.GatewayDirectionType == GatewayDirectionEnum.AndSplitMI)
                {
                    name = "并行多实例节点";
                }
                else
                {
                    name = "或多选节点";
                }

                component = new NextActivityGateway(name, transition, activity);
            }
            return(component);
        }
        /// <summary>
        /// 创建根显示节点
        /// </summary>
        /// <returns></returns>
        internal static NextActivityComponent CreateNextActivityComponent()
        {
            NextActivityComponent root = new NextActivityGateway("下一步步骤列表", null, null);

            return(root);
        }