/// <summary>
/// 更新插槽容器所在的区域
/// </summary>
/// <param name="slotContainer">当前插槽容器</param>
private void ChangeRegion(SlotContainer slotContainer)
{
bool added = false; // 是否已经添加到区域中
foreach (RegionData regionData in regionDataList)
{
if (regionData.Contains(slotContainer) && !regionData.IsInRegion(slotContainer.InvalidRectangle))
{
regionData.Remove(slotContainer);
}
if (!regionData.Contains(slotContainer) && regionData.IsInRegion(slotContainer.InvalidRectangle))
{
regionData.Add(slotContainer);
added = true;
}
}
if (!added)
{
backupRegionData.Add(slotContainer);
}
// 更新相关连接线所在的区域
foreach (ConnectorContainer line in slotContainer.GetConnectedLine())
{
ChangeRegion(line);
}
}
/// <summary>
/// 删除图元
/// </summary>
/// <param name="graphElement">要删除的图元</param>
/// <return>是否删除成功</return>
protected bool DeleteGraphElement(GraphElement graphElement)
{
Helper helper = Helper.GetHelper();
GraphManager graphManager = data as GraphManager;
FlowChartManager flowChartManager = graphManager.CurrentFlowChartManager;
DataManager dataManager = flowChartManager.CurrentDataManager;
bool deleteSuccess = false; // 是否删除成功
// 执行逻辑操作
LogicBaseManager logicManager = helper.GetLogicManager(flowChartManager.CurrentChartMode);
logicManager.DoLogicOperation(flowChartManager, LogicType.BeforeDelete, graphElement);
if (graphElement is SlotContainer) // 要删除的图元是插槽容器
{
SlotContainer slotContainer = graphElement as SlotContainer;
List <GraphElement> graphElementList = new List <GraphElement>();
// 解除绑定连接线控制点
foreach (ConnectorContainer line in slotContainer.GetConnectedLine())
{
graphElementList.Add(line);
}
slotContainer.UnBind();
// 执行逻辑操作
logicManager.DoLogicOperation(flowChartManager, LogicType.AfterDelete, graphElementList);
graphManager.SlotContainerList.Remove(slotContainer); // 从插槽容器索引链表中删除
deleteSuccess = true;
}
else if (graphElement is ConnectorContainer) // 要删除的图元是连接线控制点容器
{
ConnectorContainer connectorContainer = graphElement as ConnectorContainer;
List <GraphElement> graphElementList = new List <GraphElement>();
SlotContainer inSlotContainer = connectorContainer.InSlotContainer;
if (inSlotContainer != null)
{
connectorContainer.UnbindInSlotContainer();
}
SlotContainer outSlotContainer = connectorContainer.OutSlotContainer;
if (outSlotContainer != null)
{
graphElementList.Add(outSlotContainer);
connectorContainer.UnbindOutSlotContainer();
}
// 执行逻辑操作
logicManager.DoLogicOperation(flowChartManager, LogicType.AfterDelete, graphElementList);
graphManager.ConnectorContainerList.Remove(connectorContainer); // 从连接线控制点索引容器中删除
deleteSuccess = true;
}
else if (graphElement is ConnectorGraphElement) // 要删除的图元是连接线控制点
{
ConnectorGraphElement connector = graphElement as ConnectorGraphElement;
ConnectorContainer connectorContainer = connector.Line;
List <GraphElement> graphElementList = new List <GraphElement>();
SlotContainer inSlotContainer = connectorContainer.InSlotContainer;
if (inSlotContainer != null)
{
connectorContainer.UnbindInSlotContainer();
}
SlotContainer outSlotContainer = connectorContainer.OutSlotContainer;
if (outSlotContainer != null)
{
graphElementList.Add(outSlotContainer);
connectorContainer.UnbindOutSlotContainer();
}
// 执行逻辑操作
logicManager.DoLogicOperation(flowChartManager, LogicType.AfterDelete, graphElementList);
graphManager.ConnectorContainerList.Remove(connectorContainer); // 从连接线控制点索引容器中删除
deleteSuccess = true;
}
else if (graphElement is SlotGraphElement) // 要删除的图元是插槽
{
SlotGraphElement slot = graphElement as SlotGraphElement;
if (slot.CanDelete && (slot.IsInSlot || slot.SlotContainer.OutSlotCount > 1)) // 插槽可以删除
{
SlotContainer slotContainer = slot.SlotContainer;
slotContainer.RemoveSlot(slot);
deleteSuccess = true;
}
else
{
MessageBox.Show("该插槽不能删除", "图元删除", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
else if (graphElement is RemarkGraphElement) // 要删除的图元是注释结点
{
RemarkGraphElement remarkGraphElement = graphElement as RemarkGraphElement;
SlotContainer slotContainer = remarkGraphElement.Owner as SlotContainer;
slotContainer.RemarkNode = null;
remarkGraphElement.Owner = null;
remarkGraphElement = null;
deleteSuccess = true;
}
if (deleteSuccess) // 释放图元所占的资源
{
dataManager.DeleteData(graphElement);
graphElement.Release();
}
return(deleteSuccess);
}