Merge pull request #10488 from edx/adam/disable-check-button-on-save-click

Adam/disable check button on save click

common/lib/xmodule/xmodule/js/spec/capa/display_spec.coffee

@@ -538,6 +538,19 @@ describe 'Problem', ->
       runs ->
         expect(window.SR.readElts).toHaveBeenCalled()
 
+    it 'disables check button while posting', ->
+      runs ->
+        spyOn($, 'postWithPrefix').andCallFake (url, answers, callback) -> callback(success: 'OK')
+        spyOn @problem, 'enableCheckButton'
+        @problem.save()
+        expect(@problem.enableCheckButton).toHaveBeenCalledWith false
+      waitsFor (->
+        return jQuery.active == 0
+      ), "jQuery requests finished", 1000
+
+      runs ->
+        expect(@problem.enableCheckButton).toHaveBeenCalledWith true
+
   describe 'refreshMath', ->
     beforeEach ->
       @problem = new Problem($('.xblock-student_view'))

common/lib/xmodule/xmodule/js/src/capa/display.coffee

@@ -412,11 +412,13 @@ class @Problem
       @save_internal()
 
   save_internal: =>
+    @enableCheckButton false
     Logger.log 'problem_save', @answers
     $.postWithPrefix "#{@url}/problem_save", @answers, (response) =>
       saveMessage = response.msg
       @gentle_alert saveMessage
       @updateProgress response
+      @enableCheckButton true
 
   refreshMath: (event, element) =>
     element = event.target unless element