From 6107018859d63ab9590858c9a82b7ab15710df8b Mon Sep 17 00:00:00 2001
From: Gavin Joyce <gavinjoyce@gmail.com>
Date: Tue, 24 Jan 2017 20:13:58 +0000
Subject: [PATCH] remove arrays from `registeredActions` map

---
 .../ember-glimmer/lib/modifiers/action.js     | 22 ++-----------------
 .../lib/system/event_dispatcher.js            |  6 ++---
 2 files changed, 4 insertions(+), 24 deletions(-)

diff --git a/packages/ember-glimmer/lib/modifiers/action.js b/packages/ember-glimmer/lib/modifiers/action.js
index c18e0774065..bd3c77c6764 100644
--- a/packages/ember-glimmer/lib/modifiers/action.js
+++ b/packages/ember-glimmer/lib/modifiers/action.js
@@ -38,34 +38,16 @@ export let ActionHelper = {
 
   registerAction(actionState) {
     let { actionId } = actionState;
-    let actions = ActionManager.registeredActions[actionId];
 
-    if (!actions) {
-      actions = ActionManager.registeredActions[actionId] = [];
-    }
-
-    actions.push(actionState);
+    ActionManager.registeredActions[actionId] = actionState;
 
     return actionId;
   },
 
   unregisterAction(actionState) {
     let { actionId } = actionState;
-    let actions = ActionManager.registeredActions[actionId];
-
-    if (!actions) {
-      return;
-    }
 
-    let index = actions.indexOf(actionState);
-
-    if (index !== -1) {
-      actions.splice(index, 1);
-    }
-
-    if (actions.length === 0) {
-      delete ActionManager.registeredActions[actionId];
-    }
+    delete ActionManager.registeredActions[actionId];
   }
 };
 
diff --git a/packages/ember-views/lib/system/event_dispatcher.js b/packages/ember-views/lib/system/event_dispatcher.js
index 54eead3fcf0..3bf94d5bf09 100644
--- a/packages/ember-views/lib/system/event_dispatcher.js
+++ b/packages/ember-views/lib/system/event_dispatcher.js
@@ -219,15 +219,13 @@ export default EmberObject.extend({
 
     rootElement.on(`${event}.ember`, '[data-ember-action]', evt => {
       let attributes = evt.currentTarget.attributes;
-      let attributeCount = attributes.length;
 
-      for (let i = 0; i < attributeCount; i++) {
+      for (let i = 0; i < attributes.length; i++) {
         let attr = attributes.item(i);
         let attrName = attr.name;
 
         if (attrName.indexOf('data-ember-action-') === 0) {
-          //TODO: GJ: why does `registeredActions` contains arrays? are they always of length 1?
-          let action = ActionManager.registeredActions[attr.value][0];
+          let action = ActionManager.registeredActions[attr.value];
 
           if (action && action.eventName === eventName) {
             action.handler(evt);