static IDistance GetMode(CSSValue value, String minIdentifier, String maxIdentifier)
{
var calc = value.ToDistance();
if (calc == null)
{
var ident = value.ToIdentifier();
if (ident != null)
{
if (ident.Equals(minIdentifier, StringComparison.OrdinalIgnoreCase))
{
calc = Percent.Zero;
}
else if (ident.Equals(maxIdentifier, StringComparison.OrdinalIgnoreCase))
{
calc = Percent.Hundred;
}
else if (ident.Equals(Keywords.Center, StringComparison.OrdinalIgnoreCase))
{
calc = Percent.Fifty;
}
}
}
return(calc);
}
Boolean SetSingle(CSSValue value)
{
var calc = value.ToDistance();
if (calc != null)
{
_x = calc;
_y = calc;
return(true);
}
var ident = value.ToIdentifier();
if (ident != null)
{
if (ident.Equals(Keywords.Left, StringComparison.OrdinalIgnoreCase))
{
_x = Percent.Zero;
_y = Percent.Fifty;
_z = Percent.Zero;
return(true);
}
else if (ident.Equals(Keywords.Center, StringComparison.OrdinalIgnoreCase))
{
_x = Percent.Fifty;
_y = Percent.Fifty;
_z = Percent.Zero;
return(true);
}
else if (ident.Equals(Keywords.Right, StringComparison.OrdinalIgnoreCase))
{
_x = Percent.Hundred;
_y = Percent.Fifty;
_z = Percent.Zero;
return(true);
}
else if (ident.Equals(Keywords.Top, StringComparison.OrdinalIgnoreCase))
{
_x = Percent.Fifty;
_y = Percent.Zero;
_z = Percent.Zero;
return(true);
}
else if (ident.Equals(Keywords.Bottom, StringComparison.OrdinalIgnoreCase))
{
_x = Percent.Fifty;
_y = Percent.Hundred;
_z = Percent.Zero;
return(true);
}
}
return(false);
}
/// <summary>
/// Determines if the given value represents a valid state of this property.
/// </summary>
/// <param name="value">The state that should be used.</param>
/// <returns>True if the state is valid, otherwise false.</returns>
protected override Boolean IsValid(CSSValue value)
{
if (value.Is(Keywords.None))
{
_names.Clear();
}
else if (value is CSSPrimitiveValue)
{
var name = value.ToIdentifier();
if (name == null)
{
return(false);
}
_names.Clear();
_names.Add(name);
}
else if (value is CSSValueList)
{
var names = value.AsList(ValueExtensions.ToIdentifier);
if (names == null)
{
return(false);
}
_names.Clear();
_names.AddRange(names);
}
else
{
return(false);
}
return(true);
}