添加项目文件。

Source/Core/MAX.Framework/Extensions/StyleExtensions.cs

@@ -0,0 +1,93 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace MAX.Framework.Extensions;
+
+public static class StyleExtensions
+{
+	/// <summary>
+	/// 合并指定的 <see cref="Style"/>。
+	/// </summary>
+	/// <param name="style1"></param>
+	/// <param name="style2"></param>
+	public static void Merge(this Style style1, Style style2)
+	{
+		if (style1 == null)
+		{
+			throw new ArgumentNullException("style1");
+		}
+		if (style2 == null)
+		{
+			throw new ArgumentNullException("style2");
+		}
+
+		if (style1.TargetType.IsAssignableFrom(style2.TargetType))
+		{
+			style1.TargetType = style2.TargetType;
+		}
+
+		if (style2.BasedOn != null)
+		{
+			style1.Merge(style2.BasedOn);
+		}
+
+		foreach (SetterBase currentSetter in style2.Setters)
+		{
+			style1.Setters.Add(currentSetter);
+		}
+
+
+		foreach (TriggerBase currentTrigger in style2.Triggers)
+		{
+			style1.Triggers.Add(currentTrigger);
+		}
+
+		// This code is only needed when using DynamicResources.
+		foreach (object key in style2.Resources.Keys)
+		{
+			style1.Resources[key] = style2.Resources[key];
+		}
+	}
+
+	/// <summary>
+	/// 集合是否有值。
+	/// </summary>
+	/// <typeparam name="T"></typeparam>
+	/// <param name="source"></param>
+	/// <returns></returns>
+	public static bool HasValue<T>(this IEnumerable<T> source)
+	{
+		return source != null && source.Any();
+	}
+
+	public static ResourceDictionary FindResourceDictionary(this Style style, object resourceKey)
+	{
+		if (style.Resources != null && style.Resources.Contains(resourceKey))
+		{
+			return style.Resources;
+		}
+		if (style.BasedOn != null)
+		{
+			return style.BasedOn.FindResourceDictionary(resourceKey);
+		}
+		return null;
+	}
+
+	public static void Merge(this ResourceDictionary resourceDictionary, ResourceDictionary mergee)
+	{
+		if (resourceDictionary != null && mergee != null && mergee.Count > 0)
+		{
+			foreach (var key in mergee.Keys)
+			{
+				if (!resourceDictionary.Contains(key))
+				{
+					resourceDictionary.Add(key, mergee[key]);
+				}
+			}
+		}
+	}
+}