public void DeleteCurrentElement()
{
if (this.m_ActiveElement != null)
{
ArrayList list = new ArrayList();
foreach (Connection connection in this.m_ActiveElement.m_Connections)
{
list.Add(connection);
connection.GetConnectedElement(this.m_ActiveElement).Disconnect(connection);
}
this.m_ActiveElement.Disconnect();
foreach (Connection connection in list)
{
this.m_Layout.Connections.Remove(connection);
}
this.m_Layout.Elements.Remove(this.m_ActiveElement);
this.m_ActiveElement = null;
this.SetScrollSize();
this.Invalidate();
}
}
public bool GetConnectedElement(Element eFor, out Element e, out int nElementSource)
{
int num;
return this.GetConnectedElement(eFor, out num, out e, out nElementSource);
}
public bool IsConnectedTo(Element pe, out int nMySource, out int nForeignSource)
{
nForeignSource = nMySource = -1;
foreach (Connection connection in this.m_Connections)
{
Element element;
if (connection.GetConnectedElement(this, out nMySource, out element, out nForeignSource) && (pe == element))
{
return true;
}
}
return false;
}
public override int CanConnect(Point p, Element e, int nSource, out Point pDest)
{
int num = -1;
pDest = new Point(0.0, 0.0);
if (e != this)
{
if (Element.IsPtCaptured(p, this.PointPlus))
{
pDest = this.PointPlus;
num = 1;
}
else if (Element.IsPtCaptured(p, this.PointMinus))
{
pDest = this.PointMinus;
num = 2;
}
if (num == -1)
{
return -1;
}
if (e is TrackPassive)
{
foreach (Connection connection in base.m_Connections)
{
if (connection.IsConnected(this, e))
{
return -1;
}
}
foreach (Connection connection in base.m_Connections)
{
if (connection.IsConnectedPath(this, num) != null)
{
return -1;
}
}
return num;
}
}
return -1;
}
public override int CanConnect(Point p, Element e, int nSource, out Point pDest)
{
pDest = this.m_BasePoint;
return -1;
}
public void AddElement(Element e)
{
Debug.Assert(this.m_alElTypes.Contains(e.GetType()));
this.m_ElToAdd = e;
this.m_ElToAdd.m_Layout = this.m_Layout;
}
public override int CanConnect(Point p, Element e, int nSource, out Point pDest)
{
pDest = this.m_PointBase;
if (e is Station)
{
foreach (Connection connection in base.m_Connections)
{
if (connection.IsConnected(this, e))
{
return -1;
}
}
}
return this.GetConnectionSourceID(p);
}
public override void CopyLocationInfoFrom(Element e)
{
Debug.Assert(e is Connection);
if (e is Connection)
{
this.m_PointCenter = (e as Connection).PointCenter;
}
}
public override void CopyLocationInfoFrom(Element e)
{
Debug.Assert(e is Perron);
if (e is Perron)
{
this.BasePoint = (e as Perron).BasePoint;
}
}
public bool IsConnectedSource(Element e, int nSource)
{
return (((this.Element1 == e) && (this.Source1 == nSource)) || ((this.Element2 == e) && (this.Source2 == nSource)));
}
public Element IsConnectedTo(Element e, int nSource, Type t)
{
if (((this.Element1 == e) && (this.Source1 == nSource)) && (this.Element2.GetType() == t))
{
return this.Element2;
}
if (((this.Element2 == e) && (this.Source2 == nSource)) && (this.Element1.GetType() == t))
{
return this.Element1;
}
return null;
}
public PathElement IsConnectedPath(Element e, int nSource)
{
PathElement element = null;
element = (PathElement) this.IsConnectedTo(e, nSource, typeof(Track));
if (element != null)
{
return element;
}
element = (PathElement) this.IsConnectedTo(e, nSource, typeof(PointSwitch));
if (element != null)
{
return element;
}
return (PathElement) this.IsConnectedTo(e, nSource, typeof(PointSimple));
}
public bool IsConnected(Element el1, Element el2)
{
return (((this.Element1 == el1) && (this.Element2 == el2)) || ((this.Element1 == el2) && (this.Element2 == el1)));
}
public bool GetConnectedElement(Element eFor, out int nForElementSource, out Element e, out int nElementSource)
{
e = null;
nElementSource = nForElementSource = -1;
if (this.Element1 == eFor)
{
nForElementSource = this.Source1;
e = this.Element2;
nElementSource = this.Source2;
return true;
}
if (this.Element2 == eFor)
{
nForElementSource = this.Source2;
e = this.Element1;
nElementSource = this.Source1;
return true;
}
return false;
}
public void UpdateElement(Element e)
{
this.Invalidate();
}
public override int CanConnect(Point p, Element e, int nSource, out Point pDest)
{
int connectionSourceID = -1;
pDest = new Point(0.0, 0.0);
if (e == this)
{
return -1;
}
connectionSourceID = this.GetConnectionSourceID(p);
switch (connectionSourceID)
{
case 1:
pDest = this.PointPeak;
break;
case 2:
pDest = this.PointPlus;
break;
case 3:
pDest = this.PointMinus;
break;
case -1:
return -1;
}
if (e is Light)
{
foreach (Connection connection in base.m_Connections)
{
if (connection.IsConnectedTo(this, connectionSourceID, e.GetType()) != null)
{
return -1;
}
}
return connectionSourceID;
}
if ((e is Perron) || (e is TrainNumberField))
{
foreach (Connection connection in base.m_Connections)
{
if (connection.HasElement(e.GetType()))
{
return -1;
}
}
return connectionSourceID;
}
if (!((e is Track) || (e is PointSwitchBase)))
{
return -1;
}
foreach (Connection connection in base.m_Connections)
{
if (connection.IsConnectedPath(this, connectionSourceID) != null)
{
return -1;
}
}
return connectionSourceID;
}
protected virtual bool FindActiveContext(Point p)
{
if (this.GetLayout() == null)
{
return false;
}
string toolTipText = "";
this.m_ActiveConnection = null;
this.m_ActiveElement = null;
if (!this.m_bReadOnly)
{
foreach (Connection connection in this.GetLayout().Connections)
{
if (connection.HasElement(this.m_alElTypes) && (connection.CanMove(p) != null))
{
this.m_ActiveConnection = connection;
toolTipText = this.m_ActiveConnection.GetToolTipText(true, p);
break;
}
}
}
foreach (Element element in this.GetLayout().Elements)
{
if (this.m_alElTypes.Contains(element.GetType()) && (Element.IsPtCaptured(p, element.GetCenterPoint()) || (element.CanMove(p) != null)))
{
this.m_ActiveElement = element;
if (toolTipText.Length == 0)
{
toolTipText = this.m_ActiveElement.GetToolTipText(!this.m_bReadOnly, p);
}
break;
}
}
return ((this.m_ActiveConnection != null) || (this.m_ActiveElement != null));
}
public override void CopyLocationInfoFrom(Element e)
{
Debug.Assert(e is PointSwitchBase);
if (e is PointSwitchBase)
{
this.PointCore = (e as PointSwitchBase).PointCore;
this.PointPeak = (e as PointSwitchBase).PointPeak;
this.PointMinus = (e as PointSwitchBase).PointMinus;
this.PointPlus = (e as PointSwitchBase).PointPlus;
}
}
public override void CopyLocationInfoFrom(Element e)
{
Debug.Assert(e is IconElement);
if (e is IconElement)
{
this.m_BasePoint = (e as IconElement).BasePoint;
}
}
public override void CopyLocationInfoFrom(Element e)
{
Debug.Assert(e is Light);
if (e is Light)
{
this.PointLeg = (e as Light).PointLeg;
}
}
public override void CopyLocationInfoFrom(Element e)
{
Debug.Assert(e is Station);
if (e is Station)
{
this.PointBase = (e as Station).PointBase;
}
}
public virtual int CanConnect(Point p, Element e, int nSource, out Point pDest)
{
pDest = new Point(0.0, 0.0);
return -1;
}
public override void CopyLocationInfoFrom(Element e)
{
Debug.Assert(e is TrackPassive);
if (e is TrackPassive)
{
this.PointPlus = (e as TrackPassive).PointPlus;
this.PointMinus = (e as TrackPassive).PointMinus;
}
}
public abstract void CopyLocationInfoFrom(Element e);
public override void CopyLocationInfoFrom(Element e)
{
Debug.Assert(e is DisplayBase);
if (e is DisplayBase)
{
this.m_BasePoint = (e as DisplayBase).BasePoint;
}
}
public Element GetConnectedElement(Element e)
{
if (this.Element1 == e)
{
return this.Element2;
}
if (this.Element2 == e)
{
return this.Element1;
}
return null;
}
