System.Web.UI.WebControls.TreeView.AddNodeLinkStyle C# (CSharp) Method

		void AddNodeLinkStyle (HtmlTextWriter writer, TreeNode node, int level, bool nodeIsSelected)
		{
			Style style = new Style ();
#if NET_4_0
			bool addBorderStyle = false;
#endif
			if (Page.Header != null) {
				// styles are registered
				style.AddCssClass (ControlLinkStyle.RegisteredCssClass);

				if (nodeStyle != null) {
					style.AddCssClass (nodeLinkStyle.CssClass);
					style.AddCssClass (nodeLinkStyle.RegisteredCssClass);
				}

				if (levelLinkStyles != null && levelLinkStyles.Count > level) {
					style.AddCssClass (levelLinkStyles [level].CssClass);
					style.AddCssClass (levelLinkStyles [level].RegisteredCssClass);
#if NET_4_0
					addBorderStyle = true;
#endif
				}
				
				if (node.IsLeafNode) {
					if (leafNodeStyle != null) {
						style.AddCssClass (leafNodeLinkStyle.CssClass);
						style.AddCssClass (leafNodeLinkStyle.RegisteredCssClass);
					}
				} else if (node.IsRootNode) {
					if (rootNodeStyle != null) {
						style.AddCssClass (rootNodeLinkStyle.CssClass);
						style.AddCssClass (rootNodeLinkStyle.RegisteredCssClass);
					}
				} else if (node.IsParentNode) {
					if (parentNodeStyle != null) {
						style.AddCssClass (parentNodeLinkStyle.CssClass);
						style.AddCssClass (parentNodeLinkStyle.RegisteredCssClass);
					}
				}
				
				if (nodeIsSelected) {
					style.AddCssClass (selectedNodeLinkStyle.CssClass);
					style.AddCssClass (selectedNodeLinkStyle.RegisteredCssClass);
				}
			} else {
				// styles are not registered
				style.CopyFrom (ControlLinkStyle);
				if (nodeStyle != null)
					style.CopyFrom (nodeLinkStyle);
				
				if (levelLinkStyles != null && levelLinkStyles.Count > level) {
					style.CopyFrom (levelLinkStyles [level]);
#if NET_4_0
					addBorderStyle = true;
#endif
				}
				
				if (node.IsLeafNode) {
					if (node.IsLeafNode && leafNodeStyle != null)
						style.CopyFrom (leafNodeLinkStyle);
				} else if (node.IsRootNode) {
					if (node.IsRootNode && rootNodeStyle != null)
						style.CopyFrom (rootNodeLinkStyle);
				} else if (node.IsParentNode) {
					if (node.IsParentNode && parentNodeStyle != null)
						style.CopyFrom (parentNodeLinkStyle);
				}
				
				if (nodeIsSelected)
					style.CopyFrom (selectedNodeLinkStyle);
				
				style.AlwaysRenderTextDecoration = true;
			}
#if NET_4_0
			if (addBorderStyle) {
				// This appears not to come from any style. Instead, it's added
				// whenever a level style is present.
				writer.AddStyleAttribute (HtmlTextWriterStyle.BorderStyle, "none");
				writer.AddStyleAttribute (HtmlTextWriterStyle.FontSize, "1em");
			}		
#endif
			style.AddAttributesToRender (writer);
		}