using AngleSharp.Css; using AngleSharp.Extensions; using System; using System.Collections.Generic; using System.Linq; namespace AngleSharp.Dom.Css { internal sealed class CssBorderRadiusProperty : CssShorthandProperty { private static readonly IValueConverter<Tuple<ICssValue, ICssValue>> Converter = Converters.WithOrder(Converters.LengthOrPercentConverter.Periodic().Atomic().Val() .Required(), Converters.LengthOrPercentConverter.Periodic().Atomic().Val() .StartsWithDelimiter() .Option()); internal CssBorderRadiusProperty(CssStyleDeclaration rule) : base(PropertyNames.BorderRadius, rule, PropertyFlags.Animatable) { } protected override bool IsValid(ICssValue value) { return Converter.TryConvert(value, delegate(Tuple<ICssValue, ICssValue> m) { Get<CssBorderTopLeftRadiusProperty>().TrySetValue(Extract(m, 0)); Get<CssBorderTopRightRadiusProperty>().TrySetValue(Extract(m, 1)); Get<CssBorderBottomRightRadiusProperty>().TrySetValue(Extract(m, 2)); Get<CssBorderBottomLeftRadiusProperty>().TrySetValue(Extract(m, 3)); }); } internal override string SerializeValue(IEnumerable<CssProperty> properties) { CssBorderTopLeftRadiusProperty cssBorderTopLeftRadiusProperty = properties.OfType<CssBorderTopLeftRadiusProperty>().FirstOrDefault(); CssBorderTopRightRadiusProperty cssBorderTopRightRadiusProperty = properties.OfType<CssBorderTopRightRadiusProperty>().FirstOrDefault(); CssBorderBottomRightRadiusProperty cssBorderBottomRightRadiusProperty = properties.OfType<CssBorderBottomRightRadiusProperty>().FirstOrDefault(); CssBorderBottomLeftRadiusProperty cssBorderBottomLeftRadiusProperty = properties.OfType<CssBorderBottomLeftRadiusProperty>().FirstOrDefault(); if (cssBorderTopLeftRadiusProperty == null || cssBorderTopRightRadiusProperty == null || cssBorderBottomRightRadiusProperty == null || cssBorderBottomLeftRadiusProperty == null) return string.Empty; if (!cssBorderTopLeftRadiusProperty.HasValue || !cssBorderTopRightRadiusProperty.HasValue || !cssBorderBottomRightRadiusProperty.HasValue || !cssBorderBottomLeftRadiusProperty.HasValue) return string.Empty; return CssShorthandProperty.SerializePeriodic(cssBorderTopLeftRadiusProperty, cssBorderTopRightRadiusProperty, cssBorderBottomRightRadiusProperty, cssBorderBottomLeftRadiusProperty); } private static ICssValue Extract(Tuple<ICssValue, ICssValue> src, int index) { ICssValue cssValue = src.Item1; ICssValue cssValue2 = src.Item2; CssValueList cssValueList = cssValue as CssValueList; CssValueList cssValueList2 = cssValue2 as CssValueList; if (cssValueList != null) cssValue = Find(cssValueList, index); if (cssValue2 == null) return cssValue; CssValueList obj = new CssValueList { cssValue }; if (cssValueList2 != null) cssValue2 = Find(cssValueList2, index); obj.Add(cssValue2); return obj; } private static ICssValue Find(CssValueList list, int index) { if (index < list.Length) return list[index]; if (index == 3 && 1 < list.Length) return list[1]; return list[0]; } } }