private void CleanupOldPorts()
{
//clear all the inputs but the first one
//which is the family instance
//first kill all the connectors
for (int i = 1; i < InPortData.Count; i++)
{
dynPort p = InPorts[i];
//must remove the connectors iteratively
//do not use a foreach here!
while (p.Connectors.Count > 0)
{
dynConnector c = p.Connectors[p.Connectors.Count - 1] as dynConnector;
c.Kill();
}
}
//then remove all the ports
while (InPorts.Count > 1)
{
InPorts.RemoveAt(InPorts.Count - 1);
InPortData.RemoveAt(InPortData.Count - 1);
}
while (gridLeft.RowDefinitions.Count > 1)
{
//remove the port from the children list
gridLeft.Children.RemoveAt(gridLeft.RowDefinitions.Count - 1);
gridLeft.RowDefinitions.RemoveAt(gridLeft.RowDefinitions.Count - 1);
}
}
void OnMouseLeftButtonDown(object sender, System.Windows.Input.MouseEventArgs e)
{
//Keyboard.Focus(this);
hitResultsList.Clear();
TestClick(e.GetPosition(workBench));
#region test for a port
dynPort p = null;
if (hitResultsList.Count > 0)
{
foreach (DependencyObject depObj in hitResultsList)
{
//traverse the tree through all the
//hit elements to see if you get a port
p = ElementClicked(depObj, typeof(dynPort)) as dynPort;
if (p != null)
{
break;
}
}
}
if (p != null)
{
if (!isConnecting)
{
//test if port already has a connection if so grab it
//and begin connecting to somewhere else
//don't allow the grabbing of the start connector
if (p.Connectors.Count > 0 && p.Connectors[0].Start != p)
{
activeConnector = p.Connectors[0];
activeConnector.Disconnect(p);
isConnecting = true;
workBench.isConnecting = true;
}
else
{
try
{
//you've begun creating a connector
dynConnector c = new dynConnector(p, workBench, e.GetPosition(workBench));
activeConnector = c;
isConnecting = true;
workBench.isConnecting = true;
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
}
}
}
else
{
//attempt a connection between the port
//and the connector
if (!activeConnector.Connect(p))
{
activeConnector.Kill();
isConnecting = false;
workBench.isConnecting = false;
activeConnector = null;
}
else
{
//you've already started connecting
//now you're going to stop
isConnecting = false;
workBench.isConnecting = false;
activeConnector = null;
}
}
//set the handled flag so that the element doesn't get dragged
e.Handled = true;
}
else
{
//if you click on the canvas and you're connecting
//then drop the connector, otherwise do nothing
if (activeConnector != null)
{
activeConnector.Kill();
isConnecting = false;
workBench.isConnecting = false;
activeConnector = null;
}
}
#endregion
#region test for canvas
hitResultsList.Clear();
TestClick(e.GetPosition(workBench));
DragCanvas dc = null;
if (hitResultsList.Count > 0)
{
foreach (DependencyObject depObj in hitResultsList)
{
//traverse the tree through all the
//hit elements to see if you get a port
dc = ElementClicked(depObj, typeof(DragCanvas)) as DragCanvas;
if (dc != null)
{
Debug.WriteLine("Canvas clicked");
ClearSelection();
break;
}
}
}
#endregion
#region test for dyn element
hitResultsList.Clear();
TestClick(e.GetPosition(workBench));
dynElement element = null;
if (hitResultsList.Count > 0)
{
foreach (DependencyObject depObj in hitResultsList)
{
//traverse the tree through all the
//hit elements to see if you get an element
element = ElementClicked(depObj, typeof(dynElement)) as dynElement;
if (element != null)
{
SelectElement(element);
break;
}
}
}
#endregion
}