/// <summary>
/// Creates a new 'range' type media feature
/// </summary>
/// <param name="name"></param>
/// <param name="comparator"></param>
/// <param name="value"></param>
public MediaFeature(CssValue[] values, EMediaOperator[] ops)
{
Context = EMediaFeatureContext.Range;
Values = values;
Operators = ops;
IsValid = true;
}
// private bool IsNegated = false;
#endregion
#region Constructors
/// <summary>
/// Creates a new 'boolean' type media feature
/// </summary>
/// <param name="name"></param>
public MediaFeature(EMediaFeatureName Name)
{
Context = EMediaFeatureContext.Boolean;
MediaDefinition def = MediaDefinition.Lookup(Name);
if (def != null)
{
IsValid = true;
/* if an allowed type is keywords and 'none' is an option then we match it against that keyword */
if (0 != (def.AllowedTypes & ECssValueTypes.KEYWORD) && def.KeywordWhitelist.Contains("none"))
{
Values = new CssValue[] { CssValue.From(Name), CssValue.None };
}
else if (0 != (def.AllowedTypes & ECssValueTypes.INTEGER))
{
Values = new CssValue[] { CssValue.From(Name), CssValue.From(0) };
}
else if (0 != (def.AllowedTypes & ECssValueTypes.DIMENSION))
{
Values = new CssValue[] { CssValue.From(Name), CssValue.From(0, ECssUnit.PX) };
}
else if (0 != (def.AllowedTypes & ECssValueTypes.RESOLUTION))
{
Values = new CssValue[] { CssValue.From(Name), CssValue.From(0, ECssUnit.DPPX) };
}
}
else
{
/* This isnt a supported feature, therefore it should always evaluate to false */
IsValid = false;
}
/* For sanity just catch the case where we dont have values to compare here */
if (Values.Length <= 0)
{
IsValid = false;
}
}
