using AngleSharp.Css; using AngleSharp.Extensions; using System; namespace AngleSharp.Dom.Css { internal sealed class CssBorderImageSliceProperty : CssProperty, ICssBorderImageSliceProperty, ICssProperty { internal static readonly Length Default = new Length(100, Length.Unit.Percent); internal static readonly IValueConverter<Tuple<Length, Length?, Length?, Length?, bool>> Converter = Converters.WithAny(Converters.BorderSliceConverter.Option(Default), Converters.BorderSliceConverter.ToNullable().Option(null), Converters.BorderSliceConverter.ToNullable().Option(null), Converters.BorderSliceConverter.ToNullable().Option(null), Converters.Assign(Keywords.Fill, true).Option(false)); private Length _top; private Length _right; private Length _bottom; private Length _left; private bool _fill; public Length SliceTop => _top; public Length SliceRight => _right; public Length SliceBottom => _bottom; public Length SliceLeft => _left; public bool IsFilled => _fill; internal CssBorderImageSliceProperty(CssStyleDeclaration rule) : base(PropertyNames.BorderImageSlice, rule, PropertyFlags.None) { Reset(); } private void SetSlice(Length top, Length? right, Length? bottom, Length? left, bool fill) { _top = top; _right = (right ?? _top); _bottom = (bottom ?? _top); _left = (left ?? _right); _fill = fill; } internal override void Reset() { _top = Default; _right = Default; _bottom = Default; _left = Default; _fill = false; } protected override bool IsValid(ICssValue value) { return Converter.TryConvert(value, delegate(Tuple<Length, Length?, Length?, Length?, bool> m) { SetSlice(m.Item1, m.Item2, m.Item3, m.Item4, m.Item5); }); } } }