using AngleSharp.Dom.Css; using AngleSharp.Extensions; using AngleSharp.Parser.Css; using System.Collections.Generic; using System.Linq; namespace AngleSharp.Css.ValueConverters { internal sealed class BorderRadiusConverter : IValueConverter { private sealed class BorderRadiusValue : IPropertyValue { private readonly IPropertyValue _horizontal; private readonly IPropertyValue _vertical; private readonly CssValue _original; public string CssText { get { string cssText = _horizontal.CssText; if (_vertical != null) { string cssText2 = _vertical.CssText; if (cssText != cssText2) return cssText + " / " + cssText2; } return cssText; } } public CssValue Original => _original; public BorderRadiusValue(IPropertyValue horizontal, IPropertyValue vertical, CssValue original) { _horizontal = horizontal; _vertical = vertical; _original = original; } public CssValue ExtractFor(string name) { CssValue items = _horizontal.ExtractFor(name); return new CssValue(Enumerable.Concat(second: _vertical.ExtractFor(name), first: items.Concat(CssToken.Whitespace))); } } private readonly IValueConverter _converter = Converters.LengthOrPercentConverter.Periodic(PropertyNames.BorderTopLeftRadius, PropertyNames.BorderTopRightRadius, PropertyNames.BorderBottomRightRadius, PropertyNames.BorderBottomLeftRadius); public IPropertyValue Convert(IEnumerable<CssToken> value) { List<CssToken> list = new List<CssToken>(); List<CssToken> list2 = new List<CssToken>(); List<CssToken> list3 = list; foreach (CssToken item in value) { if (item.Type == CssTokenType.Delim && item.Data.Is("/")) { if (list3 == list2) return null; list3 = list2; } else list3.Add(item); } IPropertyValue propertyValue = _converter.Convert(list); if (propertyValue == null) return null; IPropertyValue propertyValue2 = (list3 == list2) ? _converter.Convert(list2) : propertyValue; if (propertyValue2 == null) return null; return new BorderRadiusValue(propertyValue, propertyValue2, new CssValue(value)); } public IPropertyValue Construct(CssProperty[] properties) { if (properties.Length == 4) { List<CssToken> list = new List<CssToken>(); List<CssToken> list2 = new List<CssToken>(); List<CssProperty> list3 = new List<CssProperty>(); list3.Add(properties.First((CssProperty m) => m.Name.Is(PropertyNames.BorderTopLeftRadius))); list3.Add(properties.First((CssProperty m) => m.Name.Is(PropertyNames.BorderTopRightRadius))); list3.Add(properties.First((CssProperty m) => m.Name.Is(PropertyNames.BorderBottomRightRadius))); list3.Add(properties.First((CssProperty m) => m.Name.Is(PropertyNames.BorderBottomLeftRadius))); for (int i = 0; i < list3.Count; i++) { IEnumerable<IPropertyValue> enumerable = list3[i].DeclaredValue as IEnumerable<IPropertyValue>; if (enumerable == null) return null; CssValue original = enumerable.First().Original; CssValue original2 = enumerable.Last().Original; if (i != 0) { list.Add(CssToken.Whitespace); list2.Add(CssToken.Whitespace); } list.AddRange(original); list2.AddRange(original2); } IPropertyValue horizontal = _converter.Convert(list); IPropertyValue vertical = _converter.Convert(list2); IEnumerable<CssToken> tokens = list.Concat(new CssToken(CssTokenType.Delim, "/", TextPosition.Empty)).Concat(list2); return new BorderRadiusValue(horizontal, vertical, new CssValue(tokens)); } return null; } } }