Show current unit in unit outline.

TNL-291

cms/static/js/spec/views/unit_outline_spec.js

@@ -88,6 +88,17 @@ define(["jquery", "js/common_helpers/ajax_helpers", "js/common_helpers/template_
                 expect(unitOutlineView.$('.list-units')).toExist();
             });
 
+            it('highlights the current unit', function() {
+                createUnitOutlineView(this,  createMockXBlockInfo('Mock Unit'));
+                $('.outline-unit').each(function(i) {
+                    if ($(this).data('locator') === model.get('id')) {
+                        expect($(this)).toHaveClass('is-current');
+                    } else {
+                        expect($(this)).not.toHaveClass('is-current');
+                    }
+                });
+            });
+
             it('can add a unit', function() {
                 var redirectSpy;
                 createUnitOutlineView(this, createMockXBlockInfo('Mock Unit'));

cms/static/js/views/course_outline.js

@@ -35,15 +35,8 @@ define(["jquery", "underscore", "js/views/xblock_outline", "js/views/utils/view_
                 return !this.model.isVertical();
             },
 
-            createChildView: function(xblockInfo, parentInfo, parentView) {
-                return new CourseOutlineView({
-                    model: xblockInfo,
-                    parentInfo: parentInfo,
-                    initialState: this.initialState,
-                    expandedLocators: this.expandedLocators,
-                    template: this.template,
-                    parentView: parentView || this
-                });
+            getChildViewClass: function() {
+                return CourseOutlineView;
             },
 
             /**
@@ -112,7 +105,7 @@ define(["jquery", "underscore", "js/views/xblock_outline", "js/views/utils/view_
                     });
                     // Fetch the full xblock info for the section and then create a view for it
                     sectionInfo.fetch().done(function() {
-                        sectionView = self.createChildView(sectionInfo, self.model, self);
+                        sectionView = self.createChildView(sectionInfo, self.model, {parentView: self});
                         sectionView.initialState = initialState;
                         sectionView.expandedLocators = self.expandedLocators;
                         sectionView.render();

cms/static/js/views/unit_outline.js

@@ -3,9 +3,8 @@
  * the ancestors of the unit along with its direct siblings. It also has a single "New Unit"
  * button to allow a new sibling unit to be added.
  */
-define(['js/views/xblock_outline'],
-    function(XBlockOutlineView) {
-
+define(['underscore', 'js/views/xblock_outline', 'js/views/unit_outline_child'],
+    function(_, XBlockOutlineView, UnitOutlineChildView) {
         var UnitOutlineView = XBlockOutlineView.extend({
             // takes XBlockInfo as a model
 
@@ -29,7 +28,11 @@ define(['js/views/xblock_outline'],
                     // i.e. subsection and then section.
                     for (i=ancestors.length - 1; i >= 0; i--) {
                         ancestor = ancestors[i];
-                        ancestorView = this.createChildView(ancestor, previousAncestor, ancestorView);
+                        ancestorView = this.createChildView(
+                            ancestor,
+                            previousAncestor,
+                            {parentView: ancestorView, currentUnitId: this.model.get('id')}
+                        );
                         ancestorView.render();
                         listElement.append(ancestorView.$el);
                         previousAncestor = ancestor;
@@ -37,6 +40,17 @@ define(['js/views/xblock_outline'],
                     }
                 }
                 return ancestorView;
+            },
+
+            getChildViewClass: function() {
+                return UnitOutlineChildView;
+            },
+
+            getTemplateContext: function() {
+                return _.extend(
+                    XBlockOutlineView.prototype.getTemplateContext.call(this),
+                    {currentUnitId: this.model.get('id')}
+                );
             }
         });
 

cms/static/js/views/unit_outline_child.js

+/**
+ * The UnitOutlineChildView is used to render each Section,
+ * Subsection, and Unit within the Unit Outline component on the unit
+ * page.
+ */
+define(['underscore', 'js/views/xblock_outline'],
+    function(_, XBlockOutlineView) {
+        var UnitOutlineChildView = XBlockOutlineView.extend({
+            initialize: function() {
+                XBlockOutlineView.prototype.initialize.call(this);
+                this.currentUnitId = this.options.currentUnitId;
+            },
+
+            getTemplateContext: function() {
+                return _.extend(
+                    XBlockOutlineView.prototype.getTemplateContext.call(this),
+                    {currentUnitId: this.currentUnitId}
+                );
+            },
+
+            getChildViewClass: function() {
+                return UnitOutlineChildView;
+            },
+
+            createChildView: function(childInfo, parentInfo, options) {
+                options = _.isUndefined(options) ? {} : options;
+                return XBlockOutlineView.prototype.createChildView.call(
+                    this, childInfo, parentInfo, _.extend(options, {currentUnitId: this.currentUnitId})
+                );
+            }
+        });
+
+        return UnitOutlineChildView;
+    }); // end define()

cms/static/js/views/xblock_outline.js

@@ -54,6 +54,15 @@ define(["jquery", "underscore", "gettext", "js/views/baseview", "js/views/utils/
             },
 
             renderTemplate: function() {
+                var html = this.template(this.getTemplateContext());
+                if (this.parentInfo) {
+                    this.setElement($(html));
+                } else {
+                    this.$el.html(html);
+                }
+            },
+
+            getTemplateContext: function() {
                 var xblockInfo = this.model,
                     childInfo = xblockInfo.get('child_info'),
                     parentInfo = this.parentInfo,
@@ -62,7 +71,6 @@ define(["jquery", "underscore", "gettext", "js/views/baseview", "js/views/utils/
                     parentType = parentInfo ? XBlockViewUtils.getXBlockType(parentInfo.get('category')) : null,
                     addChildName = null,
                     defaultNewChildName = null,
-                    html,
                     isCollapsed = this.shouldRenderChildren() && !this.shouldExpandChildren();
                 if (childInfo) {
                     addChildName = interpolate(gettext('New %(component_type)s'), {
@@ -70,7 +78,7 @@ define(["jquery", "underscore", "gettext", "js/views/baseview", "js/views/utils/
                     }, true);
                     defaultNewChildName = childInfo.display_name;
                 }
-                html = this.template({
+                return {
                     xblockInfo: xblockInfo,
                     visibilityClass: XBlockViewUtils.getXBlockVisibilityClass(xblockInfo.get('visibility_state')),
                     typeListClass: XBlockViewUtils.getXBlockListTypeClass(xblockType),
@@ -86,20 +94,15 @@ define(["jquery", "underscore", "gettext", "js/views/baseview", "js/views/utils/
                     includesChildren: this.shouldRenderChildren(),
                     hasExplicitStaffLock: this.model.get('has_explicit_staff_lock'),
                     staffOnlyMessage: this.model.get('staff_only_message')
-                });
-                if (this.parentInfo) {
-                    this.setElement($(html));
-                } else {
-                    this.$el.html(html);
-                }
+                };
             },
 
             renderChildren: function() {
                 var self = this,
-                    xblockInfo = this.model;
-                if (xblockInfo.get('child_info')) {
-                    _.each(this.model.get('child_info').children, function(child) {
-                        var childOutlineView = self.createChildView(child, xblockInfo);
+                    parentInfo = this.model;
+                if (parentInfo.get('child_info')) {
+                    _.each(this.model.get('child_info').children, function(childInfo) {
+                        var childOutlineView = self.createChildView(childInfo, parentInfo);
                         childOutlineView.render();
                         self.addChildView(childOutlineView);
                     });
@@ -182,15 +185,20 @@ define(["jquery", "underscore", "gettext", "js/views/baseview", "js/views/utils/
                 return true;
             },
 
-            createChildView: function(xblockInfo, parentInfo, parentView) {
-                return new XBlockOutlineView({
-                    model: xblockInfo,
+            getChildViewClass: function() {
+                return XBlockOutlineView;
+            },
+
+            createChildView: function(childInfo, parentInfo, options) {
+                var viewClass = this.getChildViewClass();
+                return new viewClass(_.extend({
+                    model: childInfo,
                     parentInfo: parentInfo,
+                    parentView: this,
                     initialState: this.initialState,
                     expandedLocators: this.expandedLocators,
-                    template: this.template,
-                    parentView: parentView || this
-                });
+                    template: this.template
+                }, options));
             },
 
             onSync: function(event) {

cms/templates/js/unit-outline.underscore

 <% if (parentInfo) { %>
-    <li class="outline-item outline-<%= xblockType %> <%= visibilityClass %>"
+    <li class="outline-item outline-<%= xblockType %> <%= visibilityClass %> <%= xblockInfo.get('id') === currentUnitId ? 'is-current' : '' %>"
         data-parent="<%= parentInfo.get('id') %>" data-locator="<%= xblockInfo.get('id') %>">
         <div class="<%= xblockType %>-header">
             <h3 class="<%= xblockType %>-header-details">