From af9aca98064382bbd9f376e2446c9813c00a05b3 Mon Sep 17 00:00:00 2001
From: Joe Fiorini <joe@joefiorini.com>
Date: Thu, 5 Mar 2015 11:49:34 -0500
Subject: [PATCH] Allow app load to be suspended to let sourcemaps load

---
 awx/ui/static/js/app.js   |  5 ++++-
 awx/ui/static/js/debug.js | 37 +++++++++++++++++++++++++++++++++++++
 2 files changed, 41 insertions(+), 1 deletion(-)
 create mode 100644 awx/ui/static/js/debug.js

diff --git a/awx/ui/static/js/app.js b/awx/ui/static/js/app.js
index 162b3967c4..52c30101e9 100644
--- a/awx/ui/static/js/app.js
+++ b/awx/ui/static/js/app.js
@@ -56,7 +56,10 @@ import 'tower/shared/InventoryTree';
 import 'tower/shared/Timer';
 import 'tower/shared/Socket';
 
-
+/*#if DEBUG#*/
+import {__deferLoadIfEnabled} from 'tower/debug';
+__deferLoadIfEnabled();
+/*#endif#*/
 
 var tower = angular.module('Tower', [
     'ngRoute',
diff --git a/awx/ui/static/js/debug.js b/awx/ui/static/js/debug.js
new file mode 100644
index 0000000000..07255c050c
--- /dev/null
+++ b/awx/ui/static/js/debug.js
@@ -0,0 +1,37 @@
+/*********************************************
+ * @ngdoc function
+ * @name __deferLoadIfEnabled
+ * @description
+ *
+ * This function only included in debug releases.
+ *
+ * This function exists to make it easier to debug when using sourcemaps.
+ * There is currently an issue in Chrome (and possibly other browsers) where
+ * breakpoints that hit before sourcemaps are downloaded do not work.
+ *
+ * Calling this function uses a feature in Angular that looks for a prefix on
+ * the `window.name` property to tell it to disable automatic loading of the app.
+ *
+ * If you need to debug code that runs at load time, first add:
+ *
+ *      ?aw.suspend=true
+ *
+ * to the end of the URL. When you see the Tower logo loaded on an otherwise blank page,
+ * open the Dev Tools console and execute the code:
+ *
+ *      angular.resumeBootstrap()
+ *
+ * This should continue loading the app and hit your breakpoint.
+ *
+ * For more information on how this works see https://docs.angularjs.org/guide/bootstrap
+*/
+export function __deferLoadIfEnabled() {
+
+    var deferPattern = /aw\.suspend=true/;
+
+    if (deferPattern.test(window.location.search) || deferPattern.test(window.location.hash)) {
+        console.log('Deferred load due to "aw.suspend=true" in URL. Please execute `angular.resumeBootstrap()` to continue.');
+        window.name = 'NG_DEFER_BOOTSTRAP!' + (window.name || '');
+    }
+
+}