Add inline and block properties

src/AngleSharp.Css/Constants/InitialValues.cs

@@ -95,10 +95,18 @@ static class InitialValues
         public static readonly ICssValue MinWidthDecl = new Constant<Length>(CssKeywords.Auto, Length.Auto);
         public static readonly ICssValue MaxHeightDecl = new Constant<Object>(CssKeywords.None, null);
         public static readonly ICssValue MaxWidthDecl = new Constant<Object>(CssKeywords.None, null);
+        public static readonly ICssValue MarginBlockEndDecl = Length.Zero;
+        public static readonly ICssValue MarginBlockStartDecl = Length.Zero;
+        public static readonly ICssValue MarginInlineEndDecl = Length.Zero;
+        public static readonly ICssValue MarginInlineStartDecl = Length.Zero;
         public static readonly ICssValue MarginLeftDecl = Length.Zero;
         public static readonly ICssValue MarginBottomDecl = Length.Zero;
         public static readonly ICssValue MarginRightDecl = Length.Zero;
         public static readonly ICssValue MarginTopDecl = Length.Zero;
+        public static readonly ICssValue PaddingBlockEndDecl = Length.Zero;
+        public static readonly ICssValue PaddingBlockStartDecl = Length.Zero;
+        public static readonly ICssValue PaddingInlineEndDecl = Length.Zero;
+        public static readonly ICssValue PaddingInlineStartDecl = Length.Zero;
         public static readonly ICssValue PaddingLeftDecl = Length.Zero;
         public static readonly ICssValue PaddingBottomDecl = Length.Zero;
         public static readonly ICssValue PaddingRightDecl = Length.Zero;

src/AngleSharp.Css/Constants/PropertyNames.cs

@@ -676,7 +676,7 @@ public static class PropertyNames
         /// The layout-grid-line declaration.
         /// </summary>
         public static readonly String LayoutGridLine = "layout-grid-line";
-        
+
         /// <summary>
         /// The grid-template-rows declaration.
         /// </summary>
@@ -802,6 +802,36 @@ public static class PropertyNames
         /// </summary>
         public static readonly String ListStyle = "list-style";
 
+        /// <summary>
+        /// The margin-block declaration.
+        /// </summary>
+        public static readonly String MarginBlock = "margin-block";
+
+        /// <summary>
+        /// The margin-block-end declaration.
+        /// </summary>
+        public static readonly String MarginBlockEnd = "margin-block-end";
+
+        /// <summary>
+        /// The margin-block-start declaration.
+        /// </summary>
+        public static readonly String MarginBlockStart = "margin-block-start";
+
+        /// <summary>
+        /// The margin-inline declaration.
+        /// </summary>
+        public static readonly String MarginInline = "margin-inline";
+
+        /// <summary>
+        /// The margin-inline-end declaration.
+        /// </summary>
+        public static readonly String MarginInlineEnd = "margin-inline-end";
+
+        /// <summary>
+        /// The margin-inline-start declaration.
+        /// </summary>
+        public static readonly String MarginInlineStart = "margin-inline-start";
+
         /// <summary>
         /// The margin-right declaration.
         /// </summary>
@@ -927,6 +957,36 @@ public static class PropertyNames
 		/// </summary>
 		public static readonly String OverflowWrap = "overflow-wrap";
 
+        /// <summary>
+        /// The padding-block declaration.
+        /// </summary>
+        public static readonly String PaddingBlock = "padding-block";
+
+        /// <summary>
+        /// The padding-block-end declaration.
+        /// </summary>
+        public static readonly String PaddingBlockEnd = "padding-block-end";
+
+        /// <summary>
+        /// The padding-block-start declaration.
+        /// </summary>
+        public static readonly String PaddingBlockStart = "padding-block-start";
+
+        /// <summary>
+        /// The padding-inline declaration.
+        /// </summary>
+        public static readonly String PaddingInline = "padding-inline";
+
+        /// <summary>
+        /// The padding-inline-end declaration.
+        /// </summary>
+        public static readonly String PaddingInlineEnd = "padding-inline-end";
+
+        /// <summary>
+        /// The padding-inline-start declaration.
+        /// </summary>
+        public static readonly String PaddingInlineStart = "padding-inline-start";
+
 		/// <summary>
 		/// The padding-top declaration.
 		/// </summary>

src/AngleSharp.Css/Converters/FlowRelativeValueConverter.cs

@@ -0,0 +1,44 @@
+namespace AngleSharp.Css.Converters
+{
+    using AngleSharp.Css.Dom;
+    using AngleSharp.Css.Parser;
+    using AngleSharp.Css.Values;
+    using AngleSharp.Text;
+    using System;
+
+    sealed class FlowRelativeValueConverter : IValueConverter
+    {
+        private readonly IValueConverter _converter;
+
+        public FlowRelativeValueConverter(IValueConverter converter)
+        {
+            _converter = converter;
+        }
+
+        public ICssValue Convert(StringSource source)
+        {
+            var options = new ICssValue[2];
+            var length = 0;
+
+            for (var i = 0; i < options.Length; i++)
+            {
+                options[i] = _converter.Convert(source);
+                source.SkipSpacesAndComments();
+
+                if (options[length] != null)
+                {
+                    length++;
+                }
+            }
+
+            if (length > 0)
+            {
+                var values = new ICssValue[length];
+                Array.Copy(options, values, length);
+                return new CssFlowRelativeValue(values);
+            }
+
+            return null;
+        }
+    }
+}

src/AngleSharp.Css/Declarations/MarginBlockDeclaration.cs

@@ -0,0 +1,56 @@
+namespace AngleSharp.Css.Declarations
+{
+    using AngleSharp.Css.Converters;
+    using AngleSharp.Css.Dom;
+    using AngleSharp.Css.Values;
+    using AngleSharp.Text;
+    using System;
+    using static ValueConverters;
+
+    static class MarginBlockDeclaration
+    {
+        public static String Name = PropertyNames.MarginBlock;
+
+        public static IValueConverter Converter = new MarginBlockAggregator();
+
+        public static ICssValue InitialValue = null;
+
+        public static PropertyFlags Flags = PropertyFlags.Shorthand;
+
+        public static String[] Longhands = new[]
+        {
+            PropertyNames.MarginBlockStart,
+            PropertyNames.MarginBlockEnd,
+        };
+
+        sealed class MarginBlockAggregator : IValueAggregator, IValueConverter
+        {
+            private static readonly IValueConverter converter = Or(AutoLengthOrPercentConverter, AssignInitial(Length.Zero)).FlowRelative();
+
+            public ICssValue Convert(StringSource source) => converter.Convert(source);
+
+            public ICssValue Merge(ICssValue[] values)
+            {
+                var start = values[0];
+                var end = values[1];
+
+                if (start != null && end != null)
+                {
+                    return new CssFlowRelativeValue(new[] { start, end });
+                }
+
+                return null;
+            }
+
+            public ICssValue[] Split(ICssValue value)
+            {
+                if (value is CssFlowRelativeValue flowRelative)
+                {
+                    return new[] { flowRelative.Start, flowRelative.End };
+                }
+
+                return null;
+            }
+        }
+    }
+}

src/AngleSharp.Css/Declarations/MarginBlockEndDeclaration.cs

@@ -0,0 +1,22 @@
+namespace AngleSharp.Css.Declarations
+{
+    using System;
+    using Dom;
+    using static ValueConverters;
+
+    public class MarginBlockEndDeclaration
+    {
+        public static String Name = PropertyNames.MarginBlockEnd;
+
+        public static String[] Shorthands = new[]
+        {
+            PropertyNames.MarginBlock,
+        };
+
+        public static IValueConverter Converter = AutoLengthOrPercentConverter;
+
+        public static ICssValue InitialValue = InitialValues.MarginBlockEndDecl;
+
+        public static PropertyFlags Flags = PropertyFlags.Unitless | PropertyFlags.Animatable;
+    }
+}

src/AngleSharp.Css/Declarations/MarginBlockStartDeclaration.cs

@@ -0,0 +1,22 @@
+namespace AngleSharp.Css.Declarations
+{
+    using System;
+    using Dom;
+    using static ValueConverters;
+
+    public class MarginBlockStartDeclaration
+    {
+        public static String Name = PropertyNames.MarginBlockStart;
+
+        public static String[] Shorthands = new[]
+        {
+            PropertyNames.MarginBlock,
+        };
+
+        public static IValueConverter Converter = AutoLengthOrPercentConverter;
+
+        public static ICssValue InitialValue = InitialValues.MarginBlockStartDecl;
+
+        public static PropertyFlags Flags = PropertyFlags.Unitless | PropertyFlags.Animatable;
+    }
+}

src/AngleSharp.Css/Declarations/MarginInlineDeclaration.cs

@@ -0,0 +1,56 @@
+namespace AngleSharp.Css.Declarations
+{
+    using AngleSharp.Css.Converters;
+    using AngleSharp.Css.Dom;
+    using AngleSharp.Css.Values;
+    using AngleSharp.Text;
+    using System;
+    using static ValueConverters;
+
+    static class MarginInlineDeclaration
+    {
+        public static String Name = PropertyNames.MarginInline;
+
+        public static IValueConverter Converter = new MarginInlineAggregator();
+
+        public static ICssValue InitialValue = null;
+
+        public static PropertyFlags Flags = PropertyFlags.Shorthand;
+
+        public static String[] Longhands = new[]
+        {
+            PropertyNames.MarginInlineStart,
+            PropertyNames.MarginInlineEnd,
+        };
+
+        sealed class MarginInlineAggregator : IValueAggregator, IValueConverter
+        {
+            private static readonly IValueConverter converter = Or(AutoLengthOrPercentConverter, AssignInitial(Length.Zero)).FlowRelative();
+
+            public ICssValue Convert(StringSource source) => converter.Convert(source);
+
+            public ICssValue Merge(ICssValue[] values)
+            {
+                var start = values[0];
+                var end = values[1];
+
+                if (start != null && end != null)
+                {
+                    return new CssFlowRelativeValue(new[] { start, end });
+                }
+
+                return null;
+            }
+
+            public ICssValue[] Split(ICssValue value)
+            {
+                if (value is CssFlowRelativeValue flowRelative)
+                {
+                    return new[] { flowRelative.Start, flowRelative.End };
+                }
+
+                return null;
+            }
+        }
+    }
+}

src/AngleSharp.Css/Declarations/MarginInlineEndDeclaration.cs

@@ -0,0 +1,22 @@
+namespace AngleSharp.Css.Declarations
+{
+    using System;
+    using Dom;
+    using static ValueConverters;
+
+    public class MarginInlineEndDeclaration
+    {
+        public static String Name = PropertyNames.MarginInlineEnd;
+
+        public static String[] Shorthands = new[]
+        {
+            PropertyNames.MarginInline,
+        };
+
+        public static IValueConverter Converter = AutoLengthOrPercentConverter;
+
+        public static ICssValue InitialValue = InitialValues.MarginInlineEndDecl;
+
+        public static PropertyFlags Flags = PropertyFlags.Unitless | PropertyFlags.Animatable;
+    }
+}

src/AngleSharp.Css/Declarations/MarginInlineStartDeclaration.cs

@@ -0,0 +1,22 @@
+namespace AngleSharp.Css.Declarations
+{
+    using System;
+    using Dom;
+    using static ValueConverters;
+
+    public class MarginInlineStartDeclaration
+    {
+        public static String Name = PropertyNames.MarginInlineStart;
+
+        public static String[] Shorthands = new[]
+        {
+            PropertyNames.MarginInline,
+        };
+
+        public static IValueConverter Converter = AutoLengthOrPercentConverter;
+
+        public static ICssValue InitialValue = InitialValues.MarginInlineStartDecl;
+
+        public static PropertyFlags Flags = PropertyFlags.Unitless | PropertyFlags.Animatable;
+    }
+}