// Copyright: 	Matra-Datavision 1991
// File:	PCollection_VerticesIterator.gxx
// Created:	Wed May 29 17:43:20 1991
// Author:	Denis PASCAL
//		<dp>
// Revised by:  Mireille MERCIEN
//              Sep,7 1992

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


//---------------------------------------------------------------------------
// Constructor
//---------------------------------------------------------------------------
PCollection_VerticesIterator::PCollection_VerticesIterator 
     (const Handle(PCollection_HDirectedGraph)& G):MyVertexIterator(G->GetVertices()) 
{
  HasMore = MyVertexIterator.More();
}


//---------------------------------------------------------------------------
// More
//---------------------------------------------------------------------------
Boolean PCollection_VerticesIterator::More () const 
{
  return HasMore;
}

//---------------------------------------------------------------------------
// Next
//---------------------------------------------------------------------------
void PCollection_VerticesIterator::Next ()  
{
  if (!HasMore) Standard_NoMoreObject::Raise();
  MyVertexIterator.Next();
  HasMore = MyVertexIterator.More();
}


//---------------------------------------------------------------------------
// Value
//---------------------------------------------------------------------------
Handle(PCollection_Vertex) PCollection_VerticesIterator::Value () const 
{
  if (!HasMore) Standard_NoSuchObject::Raise();
  return MyVertexIterator.Value();
}


//---------------------------------------------------------------------------
// Clear
//---------------------------------------------------------------------------
void PCollection_VerticesIterator::Clear () 
{
  HasMore = False;
}