From 732e421bff2e17769e7073fa4393c23ae014a38d Mon Sep 17 00:00:00 2001
From: Teemu Merikoski <teemu.merikoski@wunderkraut.com>
Date: Thu, 21 Jan 2016 10:50:25 +0200
Subject: [PATCH] Add a callback for getWeekOfYear command, onGetWeekOfYear.

---
 jquery.datetimepicker.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/jquery.datetimepicker.js b/jquery.datetimepicker.js
index 9c00413..23be5cb 100644
--- a/jquery.datetimepicker.js
+++ b/jquery.datetimepicker.js
@@ -480,6 +480,7 @@
 		onSelectDate: function () {},
 		onSelectTime: function () {},
 		onChangeMonth: function () {},
+		onGetWeekOfYear: function () {},
 		onChangeYear: function () {},
 		onChangeDateTime: function () {},
 		onShow: function () {},
@@ -1297,6 +1298,12 @@
 				};
 
 				_this.getWeekOfYear = function (datetime) {
+					if (options.onGetWeekOfYear && $.isFunction(options.onGetWeekOfYear)) {
+						var week = options.onGetWeekOfYear.call(datetimepicker, datetime);
+						if (typeof week !== 'undefined') {
+							return week;
+						}
+					}
 					var onejan = new Date(datetime.getFullYear(), 0, 1);
 					return Math.ceil((((datetime - onejan) / 86400000) + onejan.getDay() + 1) / 7);
 				};