Add repsonse pagination to inline discussions

common/static/coffee/spec/discussion/view/discussion_thread_view_inline_spec.coffee

+describe "DiscussionThreadInlineView", ->
+    beforeEach ->
+        setFixtures(
+            """
+            <script type="text/template" id="_inline_thread">
+                <article class="discussion-article">
+                    <div class="non-cohorted-indicator"/>
+                    <div class="post-extended-content">
+                        <div class="response-count"/> 
+                        <ol class="responses"/>
+                        <div class="response-pagination"/>
+                    </div>
+                    <div class="post-tools">
+                        <a href="javascript:void(0)" class="expand-post">Expand</a>
+                        <a href="javascript:void(0)" class="collapse-post">Collapse</a>
+                    </div>
+                </article>
+            </script>
+            <script type="text/template" id="_inline_thread_cohorted">
+                <article class="discussion-article">
+                    <div class="cohorted-indicator"/>
+                    <div class="post-extended-content">
+                        <div class="response-count"/> 
+                        <ol class="responses"/>
+                        <div class="response-pagination"/>
+                    </div>
+                    <div class="post-tools">
+                        <a href="javascript:void(0)" class="expand-post">Expand</a>
+                        <a href="javascript:void(0)" class="collapse-post">Collapse</a>
+                    </div>
+                </article>
+            </script>
+            <div class="thread-fixture"/>
+            """
+        )
+
+        @threadData = {
+            id: "dummy",
+            body: "dummy body",
+            abuse_flaggers: [],
+            votes: {up_count: "42"}
+        }
+        @thread = new Thread(@threadData)
+        @view = new DiscussionThreadInlineView({ model: @thread })
+        @view.setElement($(".thread-fixture"))
+        spyOn($, "ajax")
+        # Avoid unnecessary boilerplate
+        spyOn(@view.showView, "render")
+        spyOn(@view, "makeWmdEditor")
+        spyOn(DiscussionThreadView.prototype, "renderResponse")
+
+    assertContentVisible = (view, selector, visible) ->
+        content = view.$el.find(selector)
+        expect(content.length).toEqual(1)
+        expect(content.is(":visible")).toEqual(visible)
+
+    assertExpandedContentVisible = (view, expanded) ->
+        expect(view.$el.hasClass("expanded")).toEqual(expanded)
+        assertContentVisible(view, ".post-extended-content", expanded)
+        assertContentVisible(view, ".expand-post", not expanded)
+        assertContentVisible(view, ".collapse-post", expanded)
+
+    describe "render", ->
+        it "uses the cohorted template if cohorted", ->
+            @view.model.set({group_id: 1})
+            @view.render()
+            expect(@view.$el.find(".cohorted-indicator").length).toEqual(1)
+
+        it "uses the non-cohorted template if not cohorted", ->
+            @view.render()
+            expect(@view.$el.find(".non-cohorted-indicator").length).toEqual(1)
+
+        it "shows content that should be visible when collapsed", ->
+            @view.render()
+            assertExpandedContentVisible(@view, false)
+
+        it "does not render any responses by default", ->
+            @view.render()
+            expect($.ajax).not.toHaveBeenCalled()
+            expect(@view.$el.find(".responses li").length).toEqual(0)
+
+    describe "expand/collapse", ->
+        it "shows/hides appropriate content", ->
+            DiscussionViewSpecHelper.setNextResponseContent({resp_total: 0, children: []})
+            @view.render()
+            @view.expandPost()
+            assertExpandedContentVisible(@view, true)
+            @view.collapsePost()
+            assertExpandedContentVisible(@view, false)

common/static/coffee/spec/discussion/view/discussion_thread_view_spec.coffee

@@ -27,16 +27,8 @@ describe "DiscussionThreadView", ->
         spyOn(DiscussionThreadView.prototype, "renderResponse")
 
     describe "response count and pagination", ->
-
-        setNextResponseContent = (content) ->
-            $.ajax.andCallFake(
-                (params) =>
-                    params.success({"content": content})
-                    {always: ->}
-            )
-
         renderWithContent = (view, content) ->
-            setNextResponseContent(content)
+            DiscussionViewSpecHelper.setNextResponseContent(content)
             view.render()
             jasmine.Clock.tick(100)
 
@@ -73,16 +65,16 @@ describe "DiscussionThreadView", ->
                 assertRenderedCorrectly(@view, "5 responses", "Showing first response", "Load all responses")
                 
             it "correctly re-render when all threads have loaded", ->
-                setNextResponseContent({resp_total: 5, children: [{}, {}, {}, {}]})
+                DiscussionViewSpecHelper.setNextResponseContent({resp_total: 5, children: [{}, {}, {}, {}]})
                 @view.$el.find(".load-response-button").click()
                 assertRenderedCorrectly(@view, "5 responses", "Showing all responses", null)
 
             it "correctly re-render when one page remains", ->
-                setNextResponseContent({resp_total: 42, children: [{}, {}]})
+                DiscussionViewSpecHelper.setNextResponseContent({resp_total: 42, children: [{}, {}]})
                 @view.$el.find(".load-response-button").click()
                 assertRenderedCorrectly(@view, "42 responses", "Showing first 3 responses", "Load all responses")
 
             it "correctly re-render when multiple pages remain", ->
-                setNextResponseContent({resp_total: 111, children: [{}, {}]})
+                DiscussionViewSpecHelper.setNextResponseContent({resp_total: 111, children: [{}, {}]})
                 @view.$el.find(".load-response-button").click()
                 assertRenderedCorrectly(@view, "111 responses", "Showing first 3 responses", "Load next 100 responses")

common/static/coffee/spec/discussion/view/discussion_view_spec_helper.coffee

@@ -110,6 +110,12 @@ class @DiscussionViewSpecHelper
         button.trigger($.Event("keydown", {which: 32}))
         expect(spy).toHaveBeenCalled()
         
-
     @checkVoteButtonEvents = (view) ->
         @checkButtonEvents(view, "toggleVote", ".vote-btn")
+
+    @setNextResponseContent = (content) ->
+        $.ajax.andCallFake(
+            (params) =>
+                params.success({"content": content})
+                {always: ->}
+        )

common/static/coffee/src/discussion/views/discussion_thread_view.coffee

@@ -22,6 +22,7 @@ if Backbone?
 
     render: ->
       @$el.html(@renderTemplate())
+      @initLocal()
       @delegateEvents()
 
       @renderShowView()
@@ -33,10 +34,7 @@ if Backbone?
       @responses.on("add", @renderResponse)
       # Without a delay, jQuery doesn't add the loading extension defined in
       # utils.coffee before safeAjax is invoked, which results in an error
-      setTimeout(
-        => @loadResponses(INITIAL_RESPONSE_PAGE_SIZE, @$el.find(".responses"), true),
-        100
-      )
+      setTimeout((=> @loadInitialResponses()), 100)
       @
 
     cleanup: ->
@@ -71,6 +69,9 @@ if Backbone?
               gettext("We had some trouble loading more responses. Please try again.")
             )
 
+    loadInitialResponses: () ->
+      @loadResponses(INITIAL_RESPONSE_PAGE_SIZE, @$el.find(".responses"), true)
+
     renderResponseCountAndPagination: (responseTotal) =>
       @$el.find(".response-count").html(
         interpolate(
@@ -226,6 +227,9 @@ if Backbone?
     renderEditView: () ->
       @renderSubView(@editView)
 
+    getShowViewClass: () ->
+      return DiscussionThreadShowView
+
     createShowView: () ->
 
       if @editView?
@@ -233,7 +237,8 @@ if Backbone?
         @editView.$el.empty()
         @editView = null
 
-      @showView = new DiscussionThreadShowView(model: @model)
+      showViewClass = @getShowViewClass()
+      @showView = new showViewClass(model: @model)
       @showView.bind "thread:_delete", @_delete
       @showView.bind "thread:edit", @edit
 

common/static/coffee/src/discussion/views/discussion_thread_view_inline.coffee

@@ -16,7 +16,7 @@ if Backbone?
         @$local = @$el
       @$delegateElement = @$local
 
-    render: ->
+    renderTemplate: () ->
       if @model.has('group_id')
         @template = DiscussionUtil.getTemplate("_inline_thread_cohorted")
       else
@@ -25,107 +25,43 @@ if Backbone?
       if not @model.has('abbreviatedBody')
         @abbreviateBody()
       params = @model.toJSON()
-      @$el.html(Mustache.render(@template, params))
-      #@createShowView()
+      Mustache.render(@template, params)
 
-      @initLocal()
-      @delegateEvents()
-      @renderShowView()
-      @renderAttrs()
-
-      @$("span.timeago").timeago()
+    render: () ->
+      super()
       @$el.find('.post-extended-content').hide()
-      if @expanded
-        @makeWmdEditor "reply-body"
-        @renderAddResponseButton()
-        @renderResponses()
-      @
-    createShowView: () ->
-      
-      if @editView?
-        @editView.undelegateEvents()
-        @editView.$el.empty()
-        @editView = null
-      @showView = new DiscussionThreadInlineShowView(model: @model)
-      @showView.bind "thread:_delete", @_delete
-      @showView.bind "thread:edit", @edit
-
-    renderResponses: ->
-      #TODO: threadview
-      DiscussionUtil.safeAjax
-        url: "/courses/#{$$course_id}/discussion/forum/#{@model.get('commentable_id')}/threads/#{@model.id}"
-        $loading: @$el
-        success: (data, textStatus, xhr) =>
-          #          @$el.find(".loading").remove()
-          Content.loadContentInfos(data['annotated_content_info'])
-          comments = new Comments(data['content']['children'])
-          comments.each @renderResponse
-          @trigger "thread:responses:rendered"
-          @$('.loading').remove()
+      @$el.find('.collapse-post').hide()
 
+    getShowViewClass: () ->
+      return DiscussionThreadInlineShowView
 
-    toggleClosed: (event) ->
-      #TODO: showview
-      $elem = $(event.target)
-      url = @model.urlFor('close')
-      closed = @model.get('closed')
-      data = { closed: not closed }
-      DiscussionUtil.safeAjax
-        $elem: $elem
-        url: url
-        data: data
-        type: "POST"
-        success: (response, textStatus) =>
-          @model.set('closed', not closed)
-          @model.set('ability', response.ability)
-
-    toggleEndorse: (event) ->
-      #TODO: showview
-      $elem = $(event.target)
-      url = @model.urlFor('endorse')
-      endorsed = @model.get('endorsed')
-      data = { endorsed: not endorsed }
-      DiscussionUtil.safeAjax
-        $elem: $elem
-        url: url
-        data: data
-        type: "POST"
-        success: (response, textStatus) =>
-          @model.set('endorsed', not endorsed)
+    loadInitialResponses: () ->
+      if @expanded
+        super()
 
     abbreviateBody: ->
       abbreviated = DiscussionUtil.abbreviateString @model.get('body'), 140
       @model.set('abbreviatedBody', abbreviated)
 
     expandPost: (event) =>
-      @expanded = true
       @$el.addClass('expanded')
-      @$el.find('.post-body').html(@model.get('body'))
-      @showView.convertMath()
       @$el.find('.expand-post').css('display', 'none')
       @$el.find('.collapse-post').css('display', 'block')
       @$el.find('.post-extended-content').show()
-      @makeWmdEditor "reply-body"
-      @renderAttrs()
-      if @$el.find('.loading').length
-        @renderAddResponseButton()
-        @renderResponses()
+      if not @expanded
+        @expanded = true
+        @loadInitialResponses()
 
     collapsePost: (event) ->
       curScroll = $(window).scrollTop()
       postTop = @$el.offset().top
       if postTop < curScroll
         $('html, body').animate({scrollTop: postTop})
-      @expanded = false
       @$el.removeClass('expanded')
-      @$el.find('.post-body').html(@model.get('abbreviatedBody'))
-      @showView.convertMath()
+      @$el.find('.expand-post').css('display', 'block')
       @$el.find('.collapse-post').css('display', 'none')
       @$el.find('.post-extended-content').hide()
-      @$el.find('.expand-post').css('display', 'block')
 
     createEditView: () ->
       super()
-      @editView.bind "thread:update", @expandPost
       @editView.bind "thread:update", @abbreviateBody
-      @editView.bind "thread:cancel_edit", @expandPost

common/static/js_test.yml

@@ -31,6 +31,7 @@ lib_paths:
     - js/vendor/jquery.min.js
     - js/vendor/jasmine-jquery.js
     - js/vendor/jasmine-imagediff.js
+    - js/vendor/mustache.js
     - js/vendor/underscore-min.js
     - js/vendor/backbone-min.js
     - js/vendor/jquery.timeago.js

lms/static/sass/_discussion.scss

@@ -2069,10 +2069,6 @@ body.discussion {
             font-size: 12px;
             line-height: 30px;
 
-            &.collapse-post {
-              display: none;
-            }
-
             .icon {
               color: $link-color;
               margin-right: ($baseline*0.25);

lms/templates/discussion/mustache/_inline_thread.mustache

@@ -3,23 +3,25 @@
 <article class="discussion-article" data-id="{{id}}">
     <div class="thread-wrapper">
         <div class="thread-content-wrapper"></div>
-        <div class="add-response post-extended-content">
-            <button class="button add-response-btn">
-                <i class="icon icon-reply"></i>
-                <span class="add-response-btn-text">${_('Add A Response')}</span>
-            </button>
+        <div class="post-extended-content">
+          <div class="response-count"/>
+          <div class="add-response">
+              <button class="button add-response-btn">
+                  <i class="icon icon-reply"></i>
+                  <span class="add-response-btn-text">${_('Add A Response')}</span>
+              </button>
+          </div>
+          <ol class="responses"/>
+          <div class="response-pagination"/>
+          <form class="local discussion-reply-new"  data-id="{{id}}">
+              <h4>${_("Post a response:")}</h4>
+              <ul class="discussion-errors"></ul>
+              <div class="reply-body" data-id="{{id}}"></div>
+              <div class="reply-post-control">
+                  <a class="discussion-submit-post control-button" href="#">${_("Submit")}</a>
+              </div>
+          </form>
         </div>
-        <ol class="responses post-extended-content">
-            <li class="loading"><div class="loading-animation"><span class="sr">${_("Loading content")}</span></div></li>
-        </ol>
-        <form class="local discussion-reply-new post-extended-content"  data-id="{{id}}">
-            <h4>${_("Post a response:")}</h4>
-            <ul class="discussion-errors"></ul>
-            <div class="reply-body" data-id="{{id}}"></div>
-            <div class="reply-post-control">
-                <a class="discussion-submit-post control-button" href="#">${_("Submit")}</a>
-            </div>
-        </form>
     </div>
 
     <div class="local post-tools">

lms/templates/discussion/mustache/_inline_thread_cohorted.mustache

@@ -4,23 +4,25 @@
     <div class="thread-wrapper">
         <div class="group-visibility-label">{{group_string}}</div>
         <div class="thread-content-wrapper"></div>
-        <div class="add-response post-extended-content">
-            <button class="button add-response-btn">
-                <i class="icon icon-reply"></i>
-                <span class="add-response-btn-text">${_('Add A Response')}</span>
-            </button>
+        <div class="post-extended-content">
+          <div class="response-count"/>
+          <div class="add-response">
+              <button class="button add-response-btn">
+                  <i class="icon icon-reply"></i>
+                  <span class="add-response-btn-text">${_('Add A Response')}</span>
+              </button>
+          </div>
+          <ol class="responses"/>
+          <div class="response-pagination"/>
+          <form class="local discussion-reply-new"  data-id="{{id}}">
+              <h4>${_("Post a response:")}</h4>
+              <ul class="discussion-errors"></ul>
+              <div class="reply-body" data-id="{{id}}"></div>
+              <div class="reply-post-control">
+                  <a class="discussion-submit-post control-button" href="#">${_("Submit")}</a>
+              </div>
+          </form>
         </div>
-        <ol class="responses post-extended-content">
-            <li class="loading"><div class="loading-animation"><span class="sr">${_("Loading content")}</span></div></li>
-        </ol>
-        <form class="local discussion-reply-new post-extended-content"  data-id="{{id}}">
-            <h4>${_("Post a response:")}</h4>
-            <ul class="discussion-errors"></ul>
-            <div class="reply-body" data-id="{{id}}"></div>
-            <div class="reply-post-control">
-                <a class="discussion-submit-post control-button" href="#">${_("Submit")}</a>
-            </div>
-        </form>
     </div>
 
     <div class="local post-tools">