protected virtual void OnMouseDown(MouseDownEvent e)
{
if (m_Active)
{
e.StopImmediatePropagation();
return;
}
if (!CanStartManipulation(e))
{
return;
}
var port = target.GetFirstAncestorOfType <Port>();
if (port == null)
{
return;
}
m_MouseDownPosition = e.localMousePosition;
m_EdgeDragHelper.CreateEdgeCandidate(port.PortModel.GraphModel);
m_EdgeDragHelper.draggedPort = port.PortModel;
if (m_EdgeDragHelper.HandleMouseDown(e))
{
m_Active = true;
target.CaptureMouse();
e.StopPropagation();
}
else
{
m_EdgeDragHelper.Reset();
}
}
protected void OnKeyDown(KeyDownEvent evt)
{
if (m_Active)
{
if (evt.keyCode == KeyCode.Escape)
{
m_ConnectedEdgeDragHelper.Reset();
if (m_AdditionalEdgeDragHelpers != null)
{
foreach (var dragHelper in m_AdditionalEdgeDragHelpers)
{
dragHelper.Reset();
}
}
Reset();
target.ReleaseMouse();
evt.StopPropagation();
}
}
}