From c2b1775d756e624187e940308c49a77bd3396357 Mon Sep 17 00:00:00 2001
From: Victor Woeltjen <victor.woeltjen@nasa.gov>
Date: Tue, 17 Feb 2015 08:35:32 -0800
Subject: [PATCH] [Fixed Position] Free up resources

Free up resources when a fixed position view is destroyed,
WTD-889.
---
 platform/features/layout/src/FixedController.js | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/platform/features/layout/src/FixedController.js b/platform/features/layout/src/FixedController.js
index 2028a2d4e4..9dc59c1764 100644
--- a/platform/features/layout/src/FixedController.js
+++ b/platform/features/layout/src/FixedController.js
@@ -124,6 +124,14 @@ define(
                 }
             }
 
+            // Free up subscription to telemetry
+            function releaseSubscription() {
+                if (subscription) {
+                    subscription.unsubscribe();
+                    subscription = undefined;
+                }
+            }
+
             // Subscribe to telemetry updates for this domain object
             function subscribe(domainObject) {
                 // Clear any old values
@@ -145,6 +153,9 @@ define(
             // Subscribe to telemetry when an object is available
             $scope.$watch("domainObject", subscribe);
 
+            // Free up subscription on destroy
+            $scope.$on("$destroy", releaseSubscription);
+
             // Initialize styles (position etc.) for cells
             refreshCellStyles();