From 37592863802c106d086202e11cdd3ee83aa4104e Mon Sep 17 00:00:00 2001
From: Ash Clarke <github@ashclarke.email>
Date: Thu, 18 Oct 2018 17:12:39 +0100
Subject: [PATCH] Change function bindings to optional bindings.

- They are all covered by individual `if` statements anyway (#L205, #L255, #L301).

- Fixes right click triggering a selection, even if no external function is specified (Tree template no longer includes tree-right-click for an empty angular `parentGet` function).
---
 angular-tree-control.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/angular-tree-control.js b/angular-tree-control.js
index 8d1c7db..b535d42 100644
--- a/angular-tree-control.js
+++ b/angular-tree-control.js
@@ -110,9 +110,9 @@ if (typeof module !== "undefined" && typeof exports !== "undefined" && module.ex
                     selectedNode: "=?",
                     selectedNodes: "=?",
                     expandedNodes: "=?",
-                    onSelection: "&",
-                    onNodeToggle: "&",
-                    onRightClick: "&",
+                    onSelection: "&?",
+                    onNodeToggle: "&?",
+                    onRightClick: "&?",
                     menuId: "@",
                     options: "=?",
                     orderBy: "=?",