protected List <StyleRule> GetCombinedStyleRules()
{
if (BaseStyleSheets.Count == 0 &&
InheritedStyleSheets.Count == 0)
{
return(LocalRules);
}
if (InheritedStyleSheets.Contains(this))
{
throw new InvalidOperationException("A stylesheet cannot be attached to multiple elements at the same time!");
}
return(InheritedStyleSheets
.SelectMany(x => x.Rules.ToList())
.Concat(BaseStyleSheets.SelectMany(x => x.Rules.ToList()))
.Concat(LocalRules)
.GroupBy(x => x.SelectorString)
.Select(x => new StyleRule
{
Selectors = x.First().Selectors,
DeclarationBlock = new StyleDeclarationBlock(GetMergedStyleDeclarations(x.ToList()), x.SelectMany(y => y.DeclarationBlock.Triggers).ToList())
})
.ToList());
}
private void Invalidate()
{
Version++;
Reset();
var sheet = CssParser.Parse(content ?? "", BaseStyleSheets.LastOrDefault()?.Namespaces.FirstOrDefault(x => x.Alias == "")?.Namespace ?? CssParser.defaultCssNamespace, GetCombinedVariables());
foreach (var error in sheet.Errors)
{
this.LocalErrors.Add(error);
}
foreach (var warning in sheet.Warnings)
{
this.LocalWarnings.Add(warning);
}
this.localNamespaces = sheet.LocalNamespaces;
this.localRules = sheet.LocalRules;
this.variables = sheet.Variables;
EagerLoading();
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("Content"));
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("LocalRules"));
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("LocalNamespaces"));
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("Errors"));
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("Warnings"));
}
protected IDictionary <string, string> GetCombinedVariables()
{
if (BaseStyleSheets.Count == 0 &&
InheritedStyleSheets.Count == 0)
{
return(Variables);
}
return(InheritedStyleSheets
.SelectMany(x => x.Variables.ToList())
.Concat(BaseStyleSheets.SelectMany(x => x.Variables.ToList()))
.Concat(Variables)
.GroupBy(x => x.Key)
.Select(x => x.Last())
.ToDictionary(x => x.Key, x => x.Value));
}
protected ObservableCollection <string> GetCombinedWarnings()
{
if (BaseStyleSheets.Count == 0 &&
InheritedStyleSheets.Count == 0)
{
return(LocalWarnings);
}
return(new ObservableCollection <string>(
InheritedStyleSheets
.Select(x => x.Warnings)
.Concat(BaseStyleSheets.Select(x => x.Warnings))
.Aggregate((a, b) => new ObservableCollection <string>(a.Concat(b)))
.Concat(LocalWarnings)
.GroupBy(x => x)
.Select(x => x.First())));
}
protected CssNamespaceCollection GetCombinedNamespaces()
{
if (BaseStyleSheets?.Count == 0 &&
InheritedStyleSheets?.Count == 0)
{
return(LocalNamespaces);
}
return(new CssNamespaceCollection(
InheritedStyleSheets
.Select(x => x.Namespaces)
.Concat(BaseStyleSheets.Select(x => x.Namespaces))
.Aggregate((a, b) => new CssNamespaceCollection(a.Concat(b)))
.Concat(LocalNamespaces)
.GroupBy(x => x.Alias)
.Select(x => x.Last())));
}
protected List <StyleRule> GetCombinedStyleRules()
{
if (BaseStyleSheets.Count == 0 &&
InheritedStyleSheets.Count == 0)
{
return(LocalRules);
}
return(InheritedStyleSheets
.SelectMany(x => x.Rules.ToList())
.Concat(BaseStyleSheets.SelectMany(x => x.Rules.ToList()))
.Concat(LocalRules)
.GroupBy(x => x.SelectorString)
.Select(x => new StyleRule
{
Selectors = x.First().Selectors,
DeclarationBlock = new StyleDeclarationBlock(GetMergedStyleDeclarations(x.ToList()), x.SelectMany(y => y.DeclarationBlock.Triggers).ToList())
})
.ToList());
}
protected CssNamespaceCollection GetCombinedNamespaces()
{
return("GetCombinedNamespaces".Measure(() =>
{
if (BaseStyleSheets.Count == 0 &&
InheritedStyleSheets.Count == 0)
{
return LocalNamespaces;
}
var result = new CssNamespaceCollection(
InheritedStyleSheets
.Select(x => x.Namespaces)
.Concat(BaseStyleSheets.Select(x => x.Namespaces))
.Aggregate((a, b) => new CssNamespaceCollection(a.Concat(b)))
.Concat(LocalNamespaces)
.GroupBy(x => x.Alias)
.Select(x => x.Last()));
return result;
}));
}
