protected static Boolean ValidatePeriodic(CSSValue v, CSSProperty t, CSSProperty r, CSSProperty b, CSSProperty l)
{
var values = v as CSSValueList ?? new CSSValueList(v);
CSSValue top = null;
CSSValue right = null;
CSSValue bottom = null;
CSSValue left = null;
if (values.Length > 4)
{
return(false);
}
foreach (var value in values)
{
if (!t.CanStore(value, ref top) && !r.CanStore(value, ref right) && !b.CanStore(value, ref bottom) && !l.CanStore(value, ref left))
{
return(false);
}
}
right = right ?? top;
bottom = bottom ?? top;
left = left ?? right;
return(t.TrySetValue(top) && r.TrySetValue(right) && b.TrySetValue(bottom) && l.TrySetValue(left));
}
internal static Boolean CheckSingleProperty(CSSProperty property, Int32 index, CSSValueList arguments)
{
if (index < arguments.Length)
{
var argument = arguments[index];
return(property.TrySetValue(argument));
}
return(false);
}
internal static Boolean CheckLastProperty(CSSProperty property, Int32 index, CSSValueList arguments)
{
if (arguments.Length - index > 1)
{
var newList = new CSSValueList();
while (index < arguments.Length)
{
newList.Add(arguments[index++]);
}
return(property.TrySetValue(newList));
}
return(CheckSingleProperty(property, index, arguments));
}