public void Clear()
{
this.FlowInfo = new WorkFlowInfo();
panelWorkFlow.Controls.Clear();
selectedObj = null;
tempLine = null;
}
/// <summary>
/// 断开环节关联的线
/// </summary>
/// <param name="flowLine"></param>
private void DisconnectTache(FlowLine flowLine)
{
if (flowLine.StartControl != null)
{
WorkTache workTache = flowLine.StartControl as WorkTache;
workTache.FlowLine2 = null;
}
if (flowLine.EndControl != null)
{
WorkTache workTache = flowLine.EndControl as WorkTache;
workTache.FlowLine1 = null;
}
}
/// <summary>
/// 选中环节中点
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void wt_RadioMouseDown(object sender, MouseEventArgs e)
{
if (isReadOnly)
{
return;
}
if (sender is WorkTache)
{
WorkTache w = sender as WorkTache;
selectedObj = w;
w.Selected = true;
tempLine = new FlowLine();
tempLine.SetPoint(w.Left + w.Width / 2, w.Top + w.Height / 2, w.Left + w.Width / 2 + 1, w.Top + w.Height / 2 + 1);
this.panelWorkFlow.Controls.Add(tempLine);
Refresh();
this.panelWorkFlow.Capture = true;
}
}
private void panelWorkFlow_MouseUp(object sender, MouseEventArgs e)
{
if (isReadOnly)
{
return;
}
this.panelWorkFlow.Capture = false;
if (tempLine != null && selectedObj is WorkTache)
{
WorkTache endTache = GetWorkTacheControl(e.X, e.Y);
if (endTache == null || endTache.Equals(selectedObj))
{
}
else
{
ConnectionLineToTache(selectedObj as WorkTache, endTache); // 线关联到环节
}
this.panelWorkFlow.Controls.Remove(tempLine);
tempLine = null;
}
}
/// <summary>
/// 将线关联到环节
/// </summary>
/// <param name="endTache"></param>
private FlowLine ConnectionLineToTache(WorkTache startTache, WorkTache endTache, string currentTacheId = "")
{
if (startTache == null || endTache == null)
{
return(null);
}
if (!(startTache is WorkTache))
{
return(null);
}
if (startTache.TacheType == WorkTacheType.End)
{
this.ShowWarning("结束环节不能够作为流程起点！");
return(null);
}
else if (startTache.FlowLine2 != null)
{
this.ShowWarning("该环节已经流出！");
return(null);
}
if (endTache.TacheType == WorkTacheType.Begin)
{
this.ShowWarning("开始环节不能作为流程终点！");
return(null);
}
else if (endTache.FlowLine1 != null)
{
this.ShowWarning("该环节已经流入！");
return(null);
}
if (startTache.IsRelatedTo(endTache))
{
//this.ShowWarning("环节已经存在关联，请重新选择环节！");
return(null);
}
if (IsClosedLoop(startTache, endTache))
{
this.ShowWarning("流程不能形成闭环！");
return(null);
}
FlowLine line = new FlowLine();
line.KeyDown += new KeyEventHandler(control_KeyDown);
line.MouseClick += new MouseEventHandler(flowLine_MouseClick);
line.SetPoint(startTache, endTache);
if (startTache.TacheInfo.IsNextLineDashed)
{
//未达到的环节虚线、灰色图标表示
line.LineStyle = DashStyle.Dash;
endTache.TacheType = WorkTacheType.Gray;
if (startTache.TacheInfo.Id == currentTacheId)
{
startTache.TacheType = WorkTacheType.Current;
}
}
//设置环节关联的线
startTache.FlowLine2 = line;
endTache.FlowLine1 = line;
this.panelWorkFlow.Controls.Add(line);
return(line);
}