TNL-213: Let Students Add Personal Notes to Course Content.

Co-Authored-By: Jean-Michel Claus <jmc@edx.org>
Co-Authored-By: Brian Talbot <btalbot@edx.org>
Co-Authored-By: Tim Babych <tim@edx.org>
Co-Authored-By: Oleg Marshev <oleg@edx.org>
Co-Authored-By: Chris Rodriguez <crodriguez@edx.org>

lms/static/js/edxnotes/models/note.js

@@ -0,0 +1,59 @@
+;(function (define) {
+'use strict';
+define(['backbone', 'underscore.string'], function (Backbone) {
+    var NoteModel = Backbone.Model.extend({
+        defaults: {
+            'id': null,
+            'created': '',
+            'updated': '',
+            'user': '',
+            'usage_id': '',
+            'course_id': '',
+            'text': '',
+            'quote': '',
+            'ranges': [],
+            'unit': {
+                'display_name': '',
+                'url': '',
+                'location': ''
+            },
+            'section': {
+                'display_name': '',
+                'location': '',
+                'children': []
+            },
+            'chapter': {
+                'display_name': '',
+                'location': '',
+                'index': 0,
+                'children': []
+            },
+            // Flag indicating current state of the note: expanded or collapsed.
+            'is_expanded': false,
+            // Flag indicating whether `More` link should be shown.
+            'show_link': false
+        },
+
+        textSize: 300,
+
+        initialize: function () {
+            if (this.get('quote').length > this.textSize) {
+                this.set('show_link', true);
+            }
+        },
+
+        getNoteText: function () {
+            var message = this.get('quote');
+
+            if (!this.get('is_expanded') && this.get('show_link')) {
+                message = _.str.prune(message, this.textSize);
+            }
+
+            return message;
+        }
+
+    });
+
+    return NoteModel;
+});
+}).call(this, define || RequireJS.define);