From d9f42b71442cffcac7d1107a8283a42e7508c487 Mon Sep 17 00:00:00 2001
From: Muhammad Zoabi <muhammad.zoabi@gmail.com>
Date: Wed, 29 Aug 2018 15:12:32 +0300
Subject: [PATCH] Update angularjs-dropdown-multiselect.controller.js

added external event "onOpen" to invoke a callback every time dropdpwn is opened
---
 .../angularjs-dropdown-multiselect.controller.js      | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/app/component/angularjs-dropdown-multiselect.controller.js b/src/app/component/angularjs-dropdown-multiselect.controller.js
index e837cc99..5e5721dc 100644
--- a/src/app/component/angularjs-dropdown-multiselect.controller.js
+++ b/src/app/component/angularjs-dropdown-multiselect.controller.js
@@ -52,6 +52,7 @@ export default function dropdownMultiselectController(
 		onMaxSelectionReached: angular.noop,
 		onSelectionChanged: angular.noop,
 		onClose: angular.noop,
+		onOpen : angular.noop
 	};
 
 	const settings = {
@@ -136,6 +137,7 @@ export default function dropdownMultiselectController(
 		texts,
 		input,
 		close,
+		open,
 		selectCurrentGroup,
 		getGroupLabel,
 		getButtonText,
@@ -167,7 +169,9 @@ export default function dropdownMultiselectController(
 	function toggleDropdown() {
 		if ($scope.open) {
 			$scope.close();
-		} else { $scope.open = true; }
+		} else { 
+			$scope.open(); 
+		}
 		if ($scope.settings.keyboardControls) {
 			if ($scope.open) {
 				if ($scope.settings.selectionLimit === 1 && $scope.settings.enableSearch) {
@@ -193,6 +197,11 @@ export default function dropdownMultiselectController(
 		$event.stopImmediatePropagation();
 	}
 
+	function open() {
+		$scope.open = true;
+		$scope.externalEvents.onOpen();
+	}
+	
 	function close() {
 		$scope.open = false;
 		$scope.input.searchFilter = $scope.settings.clearSearchOnClose ? '' : $scope.input.searchFilter;