/// <summary>
/// Adds all the type checkers to the given scanner.
/// They basically automatically find CSS properties, units etc in assemblies.
/// </summary>
public static void AddToScanner(Modular.AssemblyScanner scanner)
{
// CSS functions:
scanner.FindAllSubTypes(typeof(CssFunction), delegate(Type type){
// Add it:
CssFunctions.Add(type);
});
// CSS at rules:
scanner.FindAllSubTypes(typeof(CssAtRule), delegate(Type type){
// Add it:
CssAtRules.Add(type);
});
// CSS units:
scanner.FindAllSubTypes(typeof(CssUnit), delegate(Type type){
// Add it:
CssUnits.Add(type);
});
// CSS keywords:
scanner.FindAllSubTypes(typeof(CssKeyword), delegate(Type type){
// Add it:
CssKeywords.Add(type);
});
// CSS properties (secondary pass; requires default values which can be any of the above):
scanner.FindAllSubTypes(1, typeof(CssProperty), delegate(Type type){
// Add it:
CssProperties.Add(type);
});
}
/// <summary>Reads a function with the given lowercase name. There must be a bracket at the current read head.</summary>
public Css.Value ReadFunction(string name)
{
// Read off the open bracket:
Read();
// Get the global instance for the given function name (lowercase):
CssFunction globalInstance = name == "" ? null : CssFunctions.Get(name);
// Read the args:
Css.Value parameters = null;
if (globalInstance == null)
{
// Unsupported function.
parameters = ReadValue();
}
else
{
// Set literal value:
if (globalInstance.LiteralValue)
{
parameters = ReadLiteralValue();
}
else
{
parameters = ReadValue();
}
}
// Skip any junk (which may be e.g. after a quote):
SkipJunk();
// Read off the close bracket:
Read();
if (name == "")
{
// This occurs with nested brackets - it's just a set.
return(parameters);
}
if (globalInstance == null)
{
// Don't know what this function is - act like it's not even there.
return(null);
}
// Copy the global instance:
CssFunction result = globalInstance.Copy() as CssFunction;
// Make sure params are a set:
ValueSet set = parameters as ValueSet;
if (set == null)
{
// It's a single value, or null
if (parameters != null)
{
// Push the single value:
result.Values = new Css.Value[] { parameters };
}
}
else
{
// Apply the parameters:
result.Values = set.Values;
}
// Tell it that it's ready:
result.OnValueReady(this);
// Ok:
return(result);
}