Exposed IStyleCollection #51

Author: FlorianRappl

src/AngleSharp.Css/Dom/IStyleCollection.cs

@@ -0,0 +1,15 @@
+namespace AngleSharp.Css.Dom
+{
+    using System.Collections.Generic;
+
+    /// <summary>
+    /// Represents a list of CSS stylesheets.
+    /// </summary>
+    public interface IStyleCollection : IEnumerable<ICssStyleRule>
+    {
+        /// <summary>
+        /// Gets the associated render device.
+        /// </summary>
+        IRenderDevice Device { get; }
+    }
+}

src/AngleSharp.Css/Dom/Internal/StyleCollection.cs

@@ -4,10 +4,7 @@ namespace AngleSharp.Css.Dom
     using System.Collections;
     using System.Collections.Generic;
 
-    /// <summary>
-    /// Represents a list of CSS stylesheets.
-    /// </summary>
-    sealed class StyleCollection : IEnumerable<ICssStyleRule>
+    sealed class StyleCollection : IStyleCollection
     {
         #region Fields
 

src/AngleSharp.Css/Dom/StyleCollectionExtensions.cs renamed to src/AngleSharp.Css/Extensions/StyleCollectionExtensions.cs

@@ -11,7 +11,7 @@ namespace AngleSharp.Css
     /// <summary>
     /// A set of useful extension methods for the StyleCollection class.
     /// </summary>
-    static class StyleCollectionExtensions
+    public static class StyleCollectionExtensions
     {
         #region Methods
 
@@ -20,7 +20,7 @@ static class StyleCollectionExtensions
         /// </summary>
         /// <param name="window">The window to host the style collection.</param>
         /// <returns>The device-bound style collection.</returns>
-        public static StyleCollection GetStyleCollection(this IWindow window)
+        public static IStyleCollection GetStyleCollection(this IWindow window)
         {
             var document = window.Document;
             var ctx = document.Context;
@@ -40,7 +40,7 @@ public static StyleCollection GetStyleCollection(this IWindow window)
         /// <param name="element">The element that is questioned.</param>
         /// <param name="pseudoSelector">The optional pseudo selector to use.</param>
         /// <returns>The style declaration containing all the declarations.</returns>
-        public static ICssStyleDeclaration ComputeDeclarations(this StyleCollection rules, IElement element, String pseudoSelector = null)
+        public static ICssStyleDeclaration ComputeDeclarations(this IStyleCollection rules, IElement element, String pseudoSelector = null)
         {
             var computedStyle = new CssStyleDeclaration(element.Owner?.Context);
             var nodes = element.GetAncestors().OfType<IElement>();
@@ -74,7 +74,7 @@ public static ICssStyleDeclaration ComputeDeclarations(this StyleCollection rule
         /// <param name="element">The element to compute the cascade for.</param>
         /// <param name="parent">The potential parent for the cascade.</param>
         /// <returns>Returns the cascaded read-only style declaration.</returns>
-        public static ICssStyleDeclaration ComputeCascadedStyle(this StyleCollection styleCollection, IElement element, ICssStyleDeclaration parent = null)
+        public static ICssStyleDeclaration ComputeCascadedStyle(this IStyleCollection styleCollection, IElement element, ICssStyleDeclaration parent = null)
         {
             var computedStyle = new CssStyleDeclaration(element.Owner?.Context);
             var rules = styleCollection.SortBySpecificity(element);