using AngleSharp.Css; using AngleSharp.Extensions; using System; using System.Collections.Generic; using System.Linq; namespace AngleSharp.Dom.Css { internal sealed class CssBackgroundProperty : CssShorthandProperty { private static readonly IValueConverter<Tuple<CssValue, Tuple<CssValue, CssValue>, CssValue, CssValue, CssValue, CssValue>> NormalLayerConverter = Converters.WithAny(Converters.ImageSourceConverter.Val().Option(), Converters.WithOrder(Converters.PointConverter.Val().Option(), CssBackgroundSizeProperty.SingleConverter.StartsWithDelimiter().Val().Option()), CssBackgroundRepeatProperty.SingleConverter.Val().Option(), Converters.BackgroundAttachmentConverter.Val().Option(), Converters.BoxModelConverter.Val().Option(), Converters.BoxModelConverter.Val().Option()); private static readonly IValueConverter<Tuple<CssValue, Tuple<CssValue, CssValue>, CssValue, CssValue, CssValue, CssValue, CssValue>> FinalLayerConverter = Converters.WithAny(Converters.ImageSourceConverter.Val().Option(), Converters.WithOrder(Converters.PointConverter.Val().Option(), CssBackgroundSizeProperty.SingleConverter.StartsWithDelimiter().Val().Option()), CssBackgroundRepeatProperty.SingleConverter.Val().Option(), Converters.BackgroundAttachmentConverter.Val().Option(), Converters.BoxModelConverter.Val().Option(), Converters.BoxModelConverter.Val().Option(), Converters.CurrentColorConverter.Val().Option()); private static readonly IValueConverter<Tuple<Tuple<CssValue, Tuple<CssValue, CssValue>, CssValue, CssValue, CssValue, CssValue>[], Tuple<CssValue, Tuple<CssValue, CssValue>, CssValue, CssValue, CssValue, CssValue, CssValue>>> Converter = NormalLayerConverter.FromList().RequiresEnd(FinalLayerConverter); internal CssBackgroundProperty(CssStyleDeclaration rule) : base(PropertyNames.Background, rule, PropertyFlags.Animatable) { } protected override bool IsValid(CssValue value) { return Converter.TryConvert(value, delegate(Tuple<Tuple<CssValue, Tuple<CssValue, CssValue>, CssValue, CssValue, CssValue, CssValue>[], Tuple<CssValue, Tuple<CssValue, CssValue>, CssValue, CssValue, CssValue, CssValue, CssValue>> m) { Get<CssBackgroundImageProperty>().TrySetValue(Transform(m, (Tuple<CssValue, Tuple<CssValue, CssValue>, CssValue, CssValue, CssValue, CssValue> n) => n.Item1)); Get<CssBackgroundPositionProperty>().TrySetValue(Transform(m, (Tuple<CssValue, Tuple<CssValue, CssValue>, CssValue, CssValue, CssValue, CssValue> n) => n.Item2.Item1)); Get<CssBackgroundSizeProperty>().TrySetValue(Transform(m, (Tuple<CssValue, Tuple<CssValue, CssValue>, CssValue, CssValue, CssValue, CssValue> n) => n.Item2.Item2)); Get<CssBackgroundRepeatProperty>().TrySetValue(Transform(m, (Tuple<CssValue, Tuple<CssValue, CssValue>, CssValue, CssValue, CssValue, CssValue> n) => n.Item3)); Get<CssBackgroundAttachmentProperty>().TrySetValue(Transform(m, (Tuple<CssValue, Tuple<CssValue, CssValue>, CssValue, CssValue, CssValue, CssValue> n) => n.Item4)); Get<CssBackgroundOriginProperty>().TrySetValue(Transform(m, (Tuple<CssValue, Tuple<CssValue, CssValue>, CssValue, CssValue, CssValue, CssValue> n) => n.Item5)); Get<CssBackgroundClipProperty>().TrySetValue(Transform(m, (Tuple<CssValue, Tuple<CssValue, CssValue>, CssValue, CssValue, CssValue, CssValue> n) => n.Item6)); Get<CssBackgroundColorProperty>().TrySetValue(m.Item2.Item7); }); } private static CssValue Transform(Tuple<Tuple<CssValue, Tuple<CssValue, CssValue>, CssValue, CssValue, CssValue, CssValue>[], Tuple<CssValue, Tuple<CssValue, CssValue>, CssValue, CssValue, CssValue, CssValue, CssValue>> data, Func<Tuple<CssValue, Tuple<CssValue, CssValue>, CssValue, CssValue, CssValue, CssValue>, CssValue> selector) { Tuple<CssValue, Tuple<CssValue, CssValue>, CssValue, CssValue, CssValue, CssValue> arg = new Tuple<CssValue, Tuple<CssValue, CssValue>, CssValue, CssValue, CssValue, CssValue>(data.Item2.Item1, data.Item2.Item2, data.Item2.Item3, data.Item2.Item4, data.Item2.Item5, data.Item2.Item6); if (data.Item1.Length == 0) return selector(arg); return null; } internal override string SerializeValue(IEnumerable<CssProperty> properties) { CssBackgroundImageProperty cssBackgroundImageProperty = properties.OfType<CssBackgroundImageProperty>().FirstOrDefault(); CssBackgroundPositionProperty cssBackgroundPositionProperty = properties.OfType<CssBackgroundPositionProperty>().FirstOrDefault(); CssBackgroundSizeProperty cssBackgroundSizeProperty = properties.OfType<CssBackgroundSizeProperty>().FirstOrDefault(); CssBackgroundRepeatProperty cssBackgroundRepeatProperty = properties.OfType<CssBackgroundRepeatProperty>().FirstOrDefault(); CssBackgroundAttachmentProperty cssBackgroundAttachmentProperty = properties.OfType<CssBackgroundAttachmentProperty>().FirstOrDefault(); CssBackgroundOriginProperty cssBackgroundOriginProperty = properties.OfType<CssBackgroundOriginProperty>().FirstOrDefault(); CssBackgroundClipProperty cssBackgroundClipProperty = properties.OfType<CssBackgroundClipProperty>().FirstOrDefault(); CssBackgroundColorProperty cssBackgroundColorProperty = properties.OfType<CssBackgroundColorProperty>().FirstOrDefault(); if (cssBackgroundImageProperty == null || cssBackgroundPositionProperty == null || cssBackgroundSizeProperty == null || cssBackgroundRepeatProperty == null || cssBackgroundAttachmentProperty == null || cssBackgroundOriginProperty == null || cssBackgroundClipProperty == null || cssBackgroundColorProperty == null) return string.Empty; List<string> list = new List<string>(); if (cssBackgroundImageProperty.HasValue) list.Add(cssBackgroundImageProperty.SerializeValue()); if (cssBackgroundPositionProperty.HasValue || cssBackgroundSizeProperty.HasValue) { list.Add(cssBackgroundPositionProperty.SerializeValue()); if (cssBackgroundSizeProperty.HasValue) { list.Add("/"); list.Add(cssBackgroundSizeProperty.SerializeValue()); } } if (cssBackgroundRepeatProperty.HasValue) list.Add(cssBackgroundRepeatProperty.SerializeValue()); if (cssBackgroundAttachmentProperty.HasValue) list.Add(cssBackgroundAttachmentProperty.SerializeValue()); if (cssBackgroundClipProperty.HasValue) list.Add(cssBackgroundClipProperty.SerializeValue()); if (cssBackgroundOriginProperty.HasValue) list.Add(cssBackgroundOriginProperty.SerializeValue()); if (cssBackgroundColorProperty.HasValue) list.Add(cssBackgroundColorProperty.SerializeValue()); return string.Join(" ", list); } } }