public void AddItem(FunctionActivity item)
{
if (item == null || _activities.Contains(item)) return;
_activities.Add(item);
OnActivityAdded(item);
}
public void RemoveItem(FunctionActivity item)
{
if (item == null || !_activities.Contains(item))
{
return;
}
_activities.Remove(item);
OnActivityRemoved(item);
}
public void AddItem(FunctionActivity item)
{
if (item == null || _activities.Contains(item))
{
return;
}
_activities.Add(item);
OnActivityAdded(item);
}
private void OnActivityRemoved(FunctionActivity element)
{
if (_isInitializing)
{
return;
}
var handler = ActivityRemoved;
if (handler != null)
{
handler(this, new FunctionActivityEventArgs(element));
}
}
public void RemoveItem(FunctionActivity item)
{
if (item == null) return;
Workflow.RemoveItem(item);
}
private void ProcessDeletedActivity(FunctionActivity activity)
{
if (activity == null) return;
var host = _surface.Children.OfType<ActivityHost>().FirstOrDefault(h => h.Id == activity.Id);
if (host == null) return;
host.IncomingLinks.ToList().ForEach(incoming => RemoveItem(incoming.WorkflowLink));
host.OutgoingLinks.ToList().ForEach(outgoing => RemoveItem(outgoing.WorkflowLink));
_surface.Children.Remove(host);
}
private void ProcessNewActivity(FunctionActivity activity)
{
if (activity == null) return;
var viewFactory = ActivityViewFactories.FirstOrDefault(f => f.Metadata.TargetType == activity.GetType());
if (viewFactory == null) return;
var view = viewFactory.CreateExport().Value;
view.Caption = viewFactory.Metadata.Caption;
view.Activity = activity;
var position = (activity.IsPropertyDefined(DesignProperties.PositionX) && activity.IsPropertyDefined(DesignProperties.PositionY))
? new Point(Convert.ToDouble(activity.GetValue(DesignProperties.PositionX)), Convert.ToDouble(activity.GetValue(DesignProperties.PositionY)))
: new Point(0, 0);
var host = new ActivityHost(activity.Id, view, position);
_surface.Children.Add(host);
}
public FunctionActivityEventArgs(FunctionActivity element)
{
Item = element;
}
public FunctionActivityEventArgs(FunctionActivity element)
{
Item = element;
}
private void OnActivityRemoved(FunctionActivity element)
{
if (_isInitializing) return;
var handler = ActivityRemoved;
if (handler != null) handler(this, new FunctionActivityEventArgs(element));
}
public void RemoveItem(FunctionActivity item)
{
if (item == null || !_activities.Contains(item)) return;
_activities.Remove(item);
OnActivityRemoved(item);
}