From c7adfb2daaa415dc2ed24068d0ecafd555f4c1ef Mon Sep 17 00:00:00 2001
From: Ethan Han <zestime@gmail.com>
Date: Mon, 27 Jul 2015 18:25:23 +0900
Subject: [PATCH] added a event for opening

---
 contextMenu.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/contextMenu.js b/contextMenu.js
index 9ff195b..34d0715 100644
--- a/contextMenu.js
+++ b/contextMenu.js
@@ -77,9 +77,14 @@ angular.module('ui.bootstrap.contextMenu', [])
                 event.preventDefault();
                 var options = $scope.$eval(attrs.contextMenu);
                 var model = $scope.$eval(attrs.model);
+                var runable = attrs.contextMenuOpening ? $scope.$eval(attrs.contextMenuOpening)($scope) : true;
+                        
                 if (options instanceof Array) {
                     if (options.length === 0) { return; }
-                    renderContextMenu($scope, event, options, model);
+
+                    if (runable) {
+                      renderContextMenu($scope, event, options, model);
+                    }
                 } else {
                     throw '"' + attrs.contextMenu + '" not an array';
                 }