private void Controller_OnMouseDown(object sender, MouseEventArgs e)
{
if (e.Clicks >= 2)
{
IShape shape = this.graphVisualizationInfoView.Controller.Model.GetShapeAt(e.Location);
if (shape != null)
{
IOperatorShapeInfo shapeInfo = shape.Tag as IOperatorShapeInfo;
if (shapeInfo != null)
{
IOperator op = this.VisualizationInfo.GetOperatorForShapeInfo(shapeInfo);
IOperatorGraphOperator graphOp = op as IOperatorGraphOperator;
Control c = this;
BreadcrumbViewHost vh;
do
{
c = c.Parent;
vh = c as BreadcrumbViewHost;
} while ((vh == null || !vh.EnableBreadcrumbs) && c != null);
if (graphOp != null && vh != null)
{
vh.AddBreadcrumbs(vh.Content);
vh.AddBreadcrumb(graphOp.Name, graphOp.OperatorGraph);
vh.Content = graphOp.OperatorGraph;
vh.ReadOnly = ReadOnly;
vh.Locked = Locked;
}
else
{
IContentView view = MainFormManager.MainForm.ShowContent(op);
if (view != null)
{
view.ReadOnly = ReadOnly;
view.Locked = Locked;
}
}
HandledMouseEventArgs eventArgs = e as HandledMouseEventArgs;
if (eventArgs != null)
{
eventArgs.Handled = true;
}
}
}
}
}
// <summary>
/// Iterates an operator graph so that it jumps from the intial operator to all other operators and yields each operator it touches.
/// Cycles are detected and not iterated twice.
/// </summary>
/// <returns>An enumeration of all the operators that could be found.</returns>
public virtual IEnumerable <IOperator> Iterate()
{
if (InitialOperator == null)
{
yield break;
}
var open = new Stack <IOperator>();
var visited = new HashSet <IOperator>();
open.Push(InitialOperator);
while (open.Any())
{
IOperator current = open.Pop();
if (visited.Contains(current))
{
continue;
}
visited.Add(current);
IOperatorGraphOperator operatorGraphOperator = current as IOperatorGraphOperator;
if (operatorGraphOperator != null)
{
open.Push(operatorGraphOperator.OperatorGraph.InitialOperator);
}
foreach (var parameter in current.Parameters.OfType <IValueParameter>())
{
if (!typeof(IOperator).IsAssignableFrom(parameter.DataType))
{
continue;
}
if (parameter.Value == null)
{
continue;
}
open.Push((IOperator)parameter.Value);
}
yield return(current);
}
}
