Call js module name dynamically, rather than statically calling the HTML module

cms/djangoapps/contentstore/views.py

@@ -17,4 +17,7 @@ def index(request):
 def edit_item(request):
     item_id = request.GET['id']
     item = keystore().get_item(item_id)
-    return HttpResponse(item.get_html())
+    return render_to_response('unit.html', {
+        'contents': item.get_html(),
+        'type': item.type,
+    })

cms/static/coffee/main.coffee

@@ -9,7 +9,7 @@ edit_item = (id) ->
         bind_edit_links()
         $('section.edit-pane').show()
         $('body').addClass('content')
-        window['construct_html']('module-html')
+        new window[$('#unit-wrapper').attr('class')] 'module-html'
     )
 
 $ ->

cms/templates/unit.html

@@ -0,0 +1,3 @@
+<div id="unit-wrapper" class="${type}">
+    ${contents}
+</div>

common/lib/xmodule/html_module.py

@@ -4,6 +4,7 @@ import logging
 from x_module import XModule
 from mako_module import MakoModuleDescriptor
 from lxml import etree
+from pkg_resources import resource_string
 
 log = logging.getLogger("mitx.courseware")
 
@@ -16,12 +17,7 @@ class HtmlModuleDescriptor(MakoModuleDescriptor):
     mako_template = "widgets/html-edit.html"
 
     # TODO (cpennington): Make this into a proper module
-    js = {'coffee': ["""
-        window.construct_html = (id) ->
-            $('#' + id + " #edit-box").on('input', ->
-                $('#' + id + ' #edit-preview').empty().append($(this).val())
-            )
-    """]}
+    js = {'coffee': [resource_string(__name__, 'js/module/html.coffee')]}
 
 
 class Module(XModule):

common/lib/xmodule/js/module/html.coffee

@@ -0,0 +1,5 @@
+class @HTML
+    constructor: (id) ->
+        $('#' + id + " #edit-box").on('input', ->
+            $('#' + id + ' #edit-preview').empty().append($(this).val())
+        )

common/lib/xmodule/setup.py

@@ -5,6 +5,9 @@ setup(
     version="0.1",
     packages=find_packages(),
     install_requires=['distribute'],
+    package_data={
+        '': ['js/*']
+    },
 
     # See http://guide.python-distribute.org/creation.html#entry-points
     # for a description of entry_points