Merge pull request #75 from cuiliang/mergeToUpstream

Support customized hilighting for dark theme
whistyun · Nov 14, 2023 · c101963 · c101963
2 parents d7bfa17 + 71e7710
commit c101963
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diff --git a/MdXaml/Highlighting/InternalHighlightManager.cs b/MdXaml/Highlighting/InternalHighlightManager.cs
@@ -112,6 +112,16 @@ public void Register(Definition def)
 
         public IHighlightingDefinition? Get(string langcode)
         {
+            // If provided, try the method of customized syntax highlighting first.
+            if (MarkdownCustomHighlighting.HighlightingResolver != null)
+            {
+                var def = MarkdownCustomHighlighting.HighlightingResolver(langcode);
+                if (def != null)
+                {
+                    return def;
+                }
+            }
+
             return HighlightingManager.Instance.GetDefinitionByExtension("." + langcode)
                 ?? GetHighlight(langcode);
         }

diff --git a/MdXaml/Highlighting/MarkdownCustomHighlighting.cs b/MdXaml/Highlighting/MarkdownCustomHighlighting.cs
@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using ICSharpCode.AvalonEdit.Highlighting;
+
+namespace MdXaml.Highlighting
+{
+    /// <summary>
+    /// customized syntax highlighting
+    /// </summary>
+    public static class MarkdownCustomHighlighting
+    {
+        /// <summary>
+        /// delegate for customize highlighting
+        /// </summary>
+        /// <param name="langcode">language code to highlight</param>
+        /// <returns>IHighlightingDefinition for the langcode</returns>
+        public delegate IHighlightingDefinition? GetHighlightingFunc(string langcode);
+
+        /// <summary>
+        /// customized highlighting method
+        /// </summary>
+        public static GetHighlightingFunc? HighlightingResolver { get; set; } = null;
+    }
+}