BOM: Add ofnLineItemUpdAttr directive to watch for changes in line_item attributes

app/assets/javascripts/admin/bulk_order_management.js.coffee

@@ -9,6 +9,30 @@ orderManagementModule.config [
 orderManagementModule.value "blankEnterprise", ->
   { id: "", name: "All" }
 
+orderManagementModule.directive "ofnLineItemUpdAttr", [
+  "switchClass", "pendingChanges"
+  (switchClass, pendingChanges) ->
+    require: "ngModel"
+    link: (scope, element, attrs, ngModel) ->
+      attrName = attrs.ofnLineItemUpdAttr
+      element.dbValue = scope.$eval(attrs.ngModel)
+      scope.$watch ->
+        scope.$eval(attrs.ngModel)
+      , (value) ->
+        if ngModel.$dirty
+          if value == element.dbValue
+            pendingChanges.remove(scope.line_item.id, attrName)
+            switchClass( element, "", ["update-pending", "update-error", "update-success"], false )
+          else
+            changeObj =
+              lineItem: scope.line_item
+              element: element
+              attrName: attrName
+              url: "/api/orders/#{scope.line_item.order.number}/line_items/#{scope.line_item.id}?line_item[#{attrName}]=#{value}"
+            pendingChanges.addItem(scope.line_item.id, attrName, changeObj)
+            switchClass( element, "update-pending", ["update-error", "update-success"], false )
+]
+
 orderManagementModule.factory "pendingChanges",[
   "dataSubmitter"
   (dataSubmitter) ->