public void Should_Work()
{
int start = 0;
int end = 20;
Assert.Equal(Enumerable.Range(start, end - start), RecursiveEnumerable.Get(start, i => i += 1, end));
}
private static void OnInlinesChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
if (obj is TextBlock textBlock)
{
textBlock.Inlines.Clear();
if (e.NewValue is IEnumerable <InlineModel> inlines)
{
ICollectionExtensions.AddRange(textBlock.Inlines, inlines.Select(i => i.Create(textBlock)));
}
}
else if (obj is Paragraph paragraph)
{
paragraph.Inlines.Clear();
if (e.NewValue is IEnumerable <InlineModel> inlines &&
RecursiveEnumerable.While(paragraph.Parent, obj => obj is FrameworkContentElement fce, obj => ((FrameworkContentElement)obj).Parent).LastOrDefault() is FrameworkElement fe)
{
ICollectionExtensions.AddRange(paragraph.Inlines, inlines.Select(i => i.Create(fe)));
}
}
}
public object ProvideValue(object targetObject, object targetProperty, IServiceProvider?serviceProvider)
{
if (targetObject is Setter setter)
{
var resourceKey = GetResourceKey(setter.Property);
if (Palette.IsDynamicResourceKey(resourceKey))
{
Debug.WriteLineIf(Converter != null, $"Warning: {nameof(Converter)} set on {nameof(FromPalette)} but when {nameof(targetObject)} is not a {nameof(FrameworkElement)} and has no Static ${nameof(Overload)} the {nameof(Converter)} is ignored");
return(new DynamicResourceExtension(resourceKey));
}
else //static
{
return(ApplyConverter(Application.Current.FindResource(resourceKey), setter.Property?.PropertyType ?? FallbackPropertyType));
}
}
else if (targetObject is DiscreteObjectKeyFrame)
{
var resourceKey = GetResourceKey(null);
return(ApplyConverter(Application.Current.FindResource(resourceKey), FallbackPropertyType));
}
else if (targetObject is ColorAnimationUsingKeyFrames)
{
FallbackPropertyType = typeof(Color);
var resourceKey = GetResourceKey(null);
return(ApplyConverter(Application.Current.FindResource(resourceKey), FallbackPropertyType));
}
else if (targetProperty is DependencyProperty dp)
{
var element = targetObject as FrameworkElement;
var resourceKey = GetResourceKey(dp);
if (element != null)
{
return(ApplyConverter(element.FindResource(resourceKey), dp.PropertyType));
}
else if (targetObject is FrameworkContentElement fce)
{
//Walk up the path to find a framework element
var parentTree = RecursiveEnumerable.Get((object?)fce, fce => (fce as FrameworkContentElement)?.Parent, null);
element = parentTree.FirstOrDefault(i => i is FrameworkElement) as FrameworkElement;
if (element != null)
{
return(ApplyConverter(element.FindResource(resourceKey), dp.PropertyType));
}
else if (!Palette.IsDynamicResourceKey(resourceKey))
{
return(ApplyConverter(Application.Current.FindResource(resourceKey), dp.PropertyType));
}
else
{
throw new NotSupportedException($"For a {nameof(FrameworkContentElement)} target there must be a {nameof(FrameworkElement)} in its parent tree. Or it should not depend on an active {nameof(Palette)}");
}
}
else if (Palette.IsDynamicResourceKey(resourceKey) && serviceProvider != null)
{
Debug.WriteLineIf(Converter != null, $"Warning: {nameof(Converter)} set on {nameof(FromPalette)} but when {nameof(targetObject)} is not a {nameof(FrameworkElement)} and has no Static ${nameof(Overload)} the {nameof(Converter)} is ignored");
return(new DynamicResourceExtension(resourceKey).ProvideValue(serviceProvider));
}
else //static
{
return(ApplyConverter(Application.Current.FindResource(resourceKey), dp.PropertyType));
}
}
else
{
var resourceKey = GetResourceKey(null);
return(ApplyConverter(Application.Current.FindResource(resourceKey), FallbackPropertyType));
}
}
public Enumerator(RecursiveEnumerable <T> owner)
{
_owner = owner;
Reset();
}