public static PseudoClass FromString(string pseudoClass)
{
var group = ParserRegex.Match(pseudoClass);
if (!group.Success)
{
throw new ArgumentException();
}
var nameGroup = group.Groups["name"];
var argsGroup = group.Groups["args"];
if (!PseudoClasses.Contains(nameGroup.Value))
{
throw new ArgumentException($"Pseudo class {nameGroup.Value} does not exist.");
}
PseudoClass?pseudoClassSelector = nameGroup.Value switch
{
"root" => new RootPseudoClass(),
"only-child" => new OnlyChildPseudoClass(),
"first-child" => new FirstChildPseudoClass(),
"last-child" => new LastChildPseudoClass(),
_ => null
};
if (pseudoClassSelector != null && argsGroup.Success)
{
throw new ArgumentException($"Pseudo class {nameGroup.Value} does not support arguments.");
}
else if (pseudoClassSelector == null && !argsGroup.Success)
{
throw new ArgumentException($"Pseudo class {nameGroup.Value} requires arguments.");
}
else if (pseudoClassSelector == null)
{
pseudoClassSelector = nameGroup.Value switch
{
"not" => new NotPseudoClass(StyleSelectorParser.Parse(argsGroup.Value)),
"nth-child" => new NthChildPseudoClass(argsGroup.Value),
_ => throw new InvalidProgramException()
};
}
return(pseudoClassSelector);
}
}
}
public static void AddStyle(CompilerState state, string selector, DynamicDictionary style)
{
var styleSelector = StyleSelectorParser.Parse(selector);
var container = new StyleContainer(styleSelector);
foreach (var(name, value) in style.GetContents())
{
if (value == null)
{
state.Context.Logger.Warning($"Style contains null value for property '{name}'.");
continue;
}
var propName = StringUtility.ToPascalCase(name);
if (StyleKeys.TryGetByName(propName, out var styleKey) && state.Context.Converters.TryConvert(value, styleKey.Type, out var propertyValue))
{
styleKey.Set(container, propertyValue);
}
}
state.Document.Styles.Add(container);
}
