protected void OnMouseDown(MouseDownEvent evt)
{
if (m_Active)
{
evt.StopImmediatePropagation();
return;
}
if (!CanStartManipulation(evt))
{
return;
}
m_Edge = (evt.target as VisualElement).parent as Edge;
if (m_Edge != null)
{
m_EdgePresenter = m_Edge.GetPresenter <EdgePresenter>();
}
m_PressPos = evt.mousePosition;
target.TakeMouseCapture();
evt.StopPropagation();
m_LastMouseDownEvent = evt;
}
public void OnDrop(GraphView graphView, Edge edge)
{
if (graphView == null || edge == null)
{
return;
}
if (graphView.presenter == null)
{
return;
}
// Check if the edge already has a presenter then do not create it
EdgePresenter edgePresenter = edge.GetPresenter <EdgePresenter>();
if (edgePresenter == null)
{
edgePresenter = ScriptableObject.CreateInstance <TEdgePresenter>();
}
edgePresenter.output = edge.output.GetPresenter <PortPresenter>();
edgePresenter.input = edge.input.GetPresenter <PortPresenter>();
edgePresenter.output.Connect(edgePresenter);
edgePresenter.input.Connect(edgePresenter);
graphView.presenter.AddElement(edgePresenter);
}
public virtual void Connect(Edge edge)
{
if (edge == null)
{
throw new ArgumentException("The value passed to Port.Connect is null");
}
// TODO: Remove when removing presenters.
var presenter = GetPresenter <PortPresenter>();
if (presenter != null)
{
var edgePresenter = edge.GetPresenter <EdgePresenter>();
presenter.Connect(edgePresenter);
}
else
{
if (!m_Connections.Contains(edge))
{
m_Connections.Add(edge);
}
}
OnConnect?.Invoke(this);
}
public void OnDrop(GraphView graphView, Edge edge)
{
if (graphView != null && edge != null)
{
if (!(graphView.presenter == null))
{
EdgePresenter edgePresenter = edge.GetPresenter <EdgePresenter>();
if (edgePresenter == null)
{
edgePresenter = ScriptableObject.CreateInstance <TEdgePresenter>();
}
edgePresenter.output = edge.output.GetPresenter <PortPresenter>();
edgePresenter.input = edge.input.GetPresenter <PortPresenter>();
edgePresenter.output.Connect(edgePresenter);
edgePresenter.input.Connect(edgePresenter);
graphView.presenter.AddElement(edgePresenter);
}
}
}
public virtual void Disconnect(Edge edge)
{
if (edge == null)
{
throw new ArgumentException("The value passed to PortPresenter.Disconnect is null");
}
PortPresenter presenter = base.GetPresenter <PortPresenter>();
if (presenter != null)
{
EdgePresenter presenter2 = edge.GetPresenter <EdgePresenter>();
presenter.Disconnect(presenter2);
}
else
{
this.m_Connections.Remove(edge);
}
if (this.OnDisconnect != null)
{
this.OnDisconnect(this);
}
}
public virtual void Connect(Edge edge)
{
if (edge == null)
{
throw new ArgumentException("The value passed to Port.Connect is null");
}
PortPresenter presenter = base.GetPresenter <PortPresenter>();
if (presenter != null)
{
EdgePresenter presenter2 = edge.GetPresenter <EdgePresenter>();
presenter.Connect(presenter2);
}
else if (!this.m_Connections.Contains(edge))
{
this.m_Connections.Add(edge);
}
if (this.OnConnect != null)
{
this.OnConnect(this);
}
}