/// <summary>
/// 获取下一个图元数据
/// </summary>
/// <param name="dataManager">数据管理器</param>
/// <param name="graphElement">当前图元</param>
/// <param name="metaData">图元数据</param>
/// <param name="graphElementList">遍历过的图元链表</param>
/// <param name="graphElementTable">绘图索引哈希表</param>
private void FindNextMetaData(DataManager dataManager, GraphElement graphElement, FlowChartMetaData metaData, List <GraphElement> graphElementList, Hashtable graphElementTable)
{
graphElementList.Add(graphElement);
graphElementTable[graphElement] = metaData;
List <GraphElement> list = dataManager.GetNextGraphElements(graphElement, false);
foreach (GraphElement g in list)
{
object data = dataManager.GetData(g);
if (!graphElementList.Contains(g))
{
DataElement dataElement = dataManager.GetDataElement(g);
FlowChartMetaData newMetaData = new FlowChartMetaData(g.ID, data, dataElement.DataType);
newMetaData.DisplayText = g.TooltipText;
newMetaData.AddPreviousMetaData(metaData);
metaData.AddNextMetaData(newMetaData);
FindNextMetaData(dataManager, g, newMetaData, graphElementList, graphElementTable);
}
else
{
FlowChartMetaData newMetaData = graphElementTable[g] as FlowChartMetaData;
newMetaData.AddPreviousMetaData(metaData);
metaData.AddNextMetaData(newMetaData);
}
}
}
/// <summary>
/// 获取下一个流程图元数据
/// </summary>
/// <param name="dataManager">数据管理器</param>
/// <param name="graphElement">当前图元</param>
/// <param name="metaData">流程图元数据</param>
/// <param name="graphElementList">遍历过的图元链表</param>
/// <param name="graphElementTable">流程图索引哈希表</param>
private void FindNextMetaData(DataManager dataManager, GraphElement graphElement, FlowChartMetaData metaData, List <GraphElement> graphElementList, Hashtable graphElementTable)
{
graphElementList.Add(graphElement);
graphElementTable[graphElement] = metaData;
List <GraphElement> list = dataManager.GetNextGraphElements(graphElement, false);
foreach (GraphElement g in list)
{
object data = dataManager.GetData(g);
if (!graphElementList.Contains(g))
{
DataElement dataElement = dataManager.GetDataElement(g);
FlowChartMetaData newMetaData = new FlowChartMetaData(g.ID, data, dataElement.DataType);
newMetaData.Code = CodeProvider.CodeProviderClass.ConvertToCode(data, dataElement.DataType);
newMetaData.DisplayText = g.TooltipText;
newMetaData.AddPreviousMetaData(metaData);
metaData.AddNextMetaData(newMetaData);
FindNextMetaData(dataManager, g, newMetaData, graphElementList, graphElementTable);
}
else
{
FlowChartMetaData newMetaData = graphElementTable[g] as FlowChartMetaData;
newMetaData.AddPreviousMetaData(metaData);
metaData.AddNextMetaData(newMetaData);
}
}
if (graphElement is ConditionGraphElement) // 条件结点
{
bool avail = true; // 是否需要生成else连接线
foreach (GraphElement g in list)
{
if (dataManager.GetData(g) == null) // 找到else连接线
{
avail = false;
break;
}
}
if (avail) // 需要生成else连接线
{
FlowChartMetaData lineMetaData = new FlowChartMetaData(0, null, "Line");
lineMetaData.Code = "";
lineMetaData.AddPreviousMetaData(metaData);
metaData.AddNextMetaData(lineMetaData);
FlowChartMetaData endMetaData = new FlowChartMetaData(0, null, "EndNode");
endMetaData.AddPreviousMetaData(lineMetaData);
lineMetaData.AddNextMetaData(endMetaData);
}
else // 连接线需要重排序
{
List <GraphElement> lineList = new List <GraphElement>();
GraphElement elseLine = null;
FlowChartMetaData newMetaData;
foreach (GraphElement g in list)
{
if (dataManager.GetData(g) == null) // else连接线
{
elseLine = g;
}
else // 普通连接线
{
lineList.Add(g);
}
}
metaData.ClearNextMetaDataList();
foreach (GraphElement g in lineList)
{
newMetaData = graphElementTable[g] as FlowChartMetaData;
metaData.AddNextMetaData(newMetaData);
}
newMetaData = graphElementTable[elseLine] as FlowChartMetaData;
metaData.AddNextMetaData(newMetaData);
}
}
else
{
if (list.Count == 0) // 当前图元没有后续图元
{
FlowChartMetaData lineMetaData = new FlowChartMetaData(0, null, "Line");
lineMetaData.AddPreviousMetaData(metaData);
metaData.AddNextMetaData(lineMetaData);
FlowChartMetaData endMetaData = new FlowChartMetaData(0, null, "EndNode");
endMetaData.AddPreviousMetaData(lineMetaData);
lineMetaData.AddNextMetaData(endMetaData);
}
}
}