Fixes to sequence module for anonymous courseware access.

common/lib/xmodule/xmodule/js/src/sequence/display.js

@@ -57,6 +57,8 @@
             this.ajaxUrl = this.el.data('ajax-url');
             this.nextUrl = this.el.data('next-url');
             this.prevUrl = this.el.data('prev-url');
+            this.savePosition = this.el.data('save-position');
+            this.showCompletion = this.el.data('show-completion');
             this.keydownHandler($(element).find('#sequence-list .tab'));
             this.base_page_title = ($('title').data('base-title') || '').trim();
             this.bind();
@@ -230,11 +232,15 @@
             if (this.position !== newPosition) {
                 if (this.position) {
                     this.mark_visited(this.position);
-                    this.update_completion(this.position);
-                    modxFullUrl = '' + this.ajaxUrl + '/goto_position';
-                    $.postWithPrefix(modxFullUrl, {
-                        position: newPosition
-                    });
+                    if (this.showCompletion) {
+                      this.update_completion(this.position);
+                    }
+                    if (this.savePosition) {
+                      modxFullUrl = '' + this.ajaxUrl + '/goto_position';
+                      $.postWithPrefix(modxFullUrl, {
+                          position: newPosition
+                      });
+                    }
                 }
 
                 // On Sequence change, fire custom event 'sequence:change' on element.

common/lib/xmodule/xmodule/seq_module.py

@@ -330,7 +330,8 @@ class SequenceModule(SequenceFields, ProctoringFields, XModule):
             'next_url': context.get('next_url'),
             'prev_url': context.get('prev_url'),
             'banner_text': banner_text,
-            'disable_navigation': not self.is_user_authenticated(context),
+            'save_position': self.is_user_authenticated(context),
+            'show_completion': self.is_user_authenticated(context),
             'gated_content': self._get_gated_content_info(prereq_met, prereq_meta_info)
         }
         fragment.add_content(self.system.render_template("seq_module.html", params))

lms/djangoapps/courseware/tests/test_views.py

@@ -2334,6 +2334,7 @@ class TestIndexView(ModuleStoreTestCase):
         with self.store.bulk_operations(course.id):
             chapter = ItemFactory(parent=course, category='chapter')
             section = ItemFactory(parent=chapter, category='sequential')
+            ItemFactory.create(parent=section, category='vertical', display_name="Vertical")
 
         url = reverse(
             'courseware_section',
@@ -2350,6 +2351,16 @@ class TestIndexView(ModuleStoreTestCase):
         with override_waffle_flag(waffle_flag, active=True):
             response = self.client.get(url, follow=False)
             assert response.status_code == 200
+            self.assertIn('data-save-position="false"', response.content)
+            self.assertIn('data-show-completion="false"', response.content)
+
+        user = UserFactory()
+        CourseEnrollmentFactory(user=user, course_id=course.id)
+        self.assertTrue(self.client.login(username=user.username, password='test'))
+        response = self.client.get(url, follow=False)
+        assert response.status_code == 200
+        self.assertIn('data-save-position="true"', response.content)
+        self.assertIn('data-show-completion="true"', response.content)
 
 
 @attr(shard=5)

lms/templates/seq_module.html

@@ -1,7 +1,12 @@
 <%page expression_filter="h"/>
 <%! from django.utils.translation import ugettext as _ %>
 
-<div id="sequence_${element_id}" class="sequence" data-id="${item_id}" data-position="${position}" data-ajax-url="${ajax_url}" data-next-url="${next_url}" data-prev-url="${prev_url}">
+<div id="sequence_${element_id}" class="sequence" data-id="${item_id}"
+     data-position="${position}" data-ajax-url="${ajax_url}"
+     data-next-url="${next_url}" data-prev-url="${prev_url}"
+     data-save-position="${'true' if save_position else 'false'}"
+     data-show-completion="${'true' if show_completion else 'false'}"
+>
   % if banner_text:
     <div class="pattern-library-shim alert alert-information subsection-header" tabindex="-1">
       <span class="pattern-library-shim icon alert-icon fa fa-info-circle" aria-hidden="true"></span>
@@ -46,8 +51,7 @@
             data-page-title="${item['page_title']}"
             data-path="${item['path']}"
             data-graded="${item['graded']}"
-            id="tab_${idx}"
-            ${"disabled=disabled" if disable_navigation else ""}>
+            id="tab_${idx}">
             <span class="icon fa seq_${item['type']}" aria-hidden="true"></span>
             % if 'complete' in item:
               <span