object MathML.MathMLVisitor.Visit(MathMLFractionElement e, object args)
{
switch (selection)
{
case SelectionType.Prev:
{
if (args == e.Denominator && e.Numerator != null)
{
selection = SelectionType.End;
return(e.Numerator.Accept(this, null));
}
else
{
MathMLElement p = e.ParentNode as MathMLElement;
return(p != null?p.Accept(this, e) : null);
}
}
case SelectionType.Next:
{
if (args == e)
{
index = 0;
selection = SelectionType.Start;
return(e.Numerator != null?e.Numerator.Accept(this, e) : null);
}
else if (args == e.Numerator && e.Denominator != null)
{
selection = SelectionType.Start;
return(e.Denominator.Accept(this, null));
}
else
{
MathMLElement p = e.ParentNode as MathMLElement;
return(p != null?p.Accept(this, e) : null);
}
}
case SelectionType.End:
{
return(e.Denominator != null?e.Denominator.Accept(this, null) : null);
}
case SelectionType.Start:
{
return(e);
}
default:
{
return(null);
}
}
}
object MathML.MathMLVisitor.Visit(MathMLFractionElement e, object args)
{
return ((Area)formatter.Visit(e, args)).BoundingBox;
}
object MathML.MathMLVisitor.Visit(MathMLFractionElement e, object args)
{
return(((Area)formatter.Visit(e, args)).BoundingBox);
}