All modules moved into new OO framework

courseware/modules/seq_module.py

@@ -0,0 +1,71 @@
+from x_module import XModule
+from lxml import etree
+
+import json
+
+## TODO: Abstract out from Django
+from django.conf import settings
+from djangomako.shortcuts import render_to_response, render_to_string
+
+class SequentialModule(XModule):
+    ''' Layout module which lays out content in a temporal sequence
+    '''
+    id_attribute = 'id'
+
+    def get_state(self):
+        return json.dumps({ })
+
+    def get_xml_tags():
+        return ["sequential", 'tab']
+        
+    def get_html(self):
+        return self.content
+
+    def get_init_js(self):
+        return self.init_js
+
+    def get_destroy_js(self):
+        return self.destroy_js
+
+    def __init__(self, xml, item_id, ajax_url=None, track_url=None, state=None, track_function=None, render_function = None, meta = None):
+        XModule.__init__(self, xml, item_id, ajax_url, track_url, state, track_function, render_function)
+        xmltree=etree.fromstring(xml)
+
+        def j(m): 
+            ''' jsonify contents so it can be embedded in a js array
+            We also need to split </script> tags so they don't break
+            mid-string'''
+            if 'init_js' not in m: m['init_js']=""
+            if 'type' not in m: m['init_js']=""
+            content=json.dumps(m['content']) 
+            content=content.replace('</script>', '<"+"/script>') 
+
+            return {'content':content, 
+                    "destroy_js":m['destroy_js'], 
+                    'init_js':m['init_js'], 
+                    'type':m['type']}
+
+        contents=[(e.get("name"),j(render_function(meta, e))) \
+                      for e in xmltree]
+     
+        js=""
+
+        params={'items':contents,
+                'id':"seq"}
+
+        # TODO/BUG: Destroy JavaScript should only be called for the active view
+        # This calls it for all the views
+        # 
+        # To fix this, we'd probably want to have some way of assigning unique
+        # IDs to sequences. 
+        destroy_js="".join([e[1]['destroy_js'] for e in contents if 'destroy_js' in e[1]])
+        
+        if xmltree.tag == 'sequential':
+            self.init_js=js+render_to_string('seq_module.js',params)
+            self.destroy_js=destroy_js
+            self.content=render_to_string('seq_module.html',params)
+        if xmltree.tag == 'tab':
+            params['id'] = 'tab'
+            self.init_js=js+render_to_string('tab_module.js',params)
+            self.destroy_js=destroy_js
+            self.content=render_to_string('tab_module.html',params)