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// File:	GraphDS_Vertex.gxx
// Created:	Tue Mar 16 15:26:55 1993
// Author:	Denis PASCAL
//		<dp@bravox>

#include <Standard_NoSuchObject.hxx>
#include <Standard_NoMoreObject.hxx>
#include <Standard_DomainError.hxx>
#include <Standard_NotImplemented.hxx>


//=======================================================================
//function : GraphDS_Vertex
//purpose  : 
//=======================================================================

GraphDS_Vertex::GraphDS_Vertex (const GraphDS_Item& value) : myItem(value)
{
}


//=======================================================================
//function : GetItem
//purpose  : 
//=======================================================================

const GraphDS_Item& GraphDS_Vertex::GetItem () const 
{
  return myItem;
}


//=======================================================================
//function : SetItem
//purpose  : 
//=======================================================================

void GraphDS_Vertex::SetItem (const GraphDS_Item& Value) 
{
  myItem = Value;
}

//=======================================================================
//function : Contains
//purpose  : 
//=======================================================================

Standard_Boolean GraphDS_Vertex::Contains (const Handle(GraphDS_Edge)& E) const 
{
  return myEdges.Contains(E);
}


Standard_Boolean GraphDS_Vertex::IsFront (const Handle(GraphDS_Edge)& ) const 
{
  Standard_NotImplemented::Raise();
  return Standard_False;
}


Standard_Boolean GraphDS_Vertex::IsBack (const Handle(GraphDS_Edge)& ) const 
{
  Standard_NotImplemented::Raise();
  return Standard_False;
}



//=======================================================================
//function : IsRoot
//purpose  : never destination of an edge
//=======================================================================

Standard_Boolean GraphDS_Vertex::IsRoot (const Standard_Boolean ignoreselfloop) const 
{
  Handle(GraphDS_Vertex) me = this;
  Handle(GraphDS_Edge) E;
  TColStd_MapIteratorOfMapOfTransient it;
  for (it.Initialize(myEdges); it.More(); it.Next()) {
    E = Handle(GraphDS_Edge)::DownCast(it.Key());    
    if (ignoreselfloop && E->IsLoop()) continue;
    if (E->Destination() == me) return Standard_False;
  }
  return Standard_True;
}


//=======================================================================
//function : IsLeaf
//purpose  : never source of an edge
//=======================================================================

Standard_Boolean GraphDS_Vertex::IsLeaf (const Standard_Boolean ignoreselfloop) const 
{
  Handle(GraphDS_Vertex) me = this;
  Handle(GraphDS_Edge) E;
  TColStd_MapIteratorOfMapOfTransient it;
  for (it.Initialize(myEdges); it.More(); it.Next()) {
    E = Handle(GraphDS_Edge)::DownCast(it.Key());
    if (ignoreselfloop && E->IsLoop()) continue;
    if (E->Source() == me) return Standard_False;
  }
  return Standard_True;
}

//=======================================================================
//function : AddEdge
//purpose  : private
//=======================================================================

Standard_Boolean GraphDS_Vertex::AddEdge (const Handle(GraphDS_Edge)& E) 
{
  return myEdges.Add(E);
}


//=======================================================================
//function : RemoveEdge
//purpose  : private 
//=======================================================================

void GraphDS_Vertex::RemoveEdge (const Handle(GraphDS_Edge)& E) 
{
  myEdges.Remove(E);
}
       


//=======================================================================
//function : GetEdges
//purpose  : private
//=======================================================================

const TColStd_MapOfTransient& GraphDS_Vertex::GetEdges () const 
{
  return myEdges;
}