From 786c11484ea3a3795dc2657c71246734228aebda Mon Sep 17 00:00:00 2001
From: Vasyl Nakvasiuk <vaxxxa@Vasyls-Mac-mini.local>
Date: Thu, 31 Jan 2013 11:23:13 +0200
Subject: [PATCH] <videoalpha> tag now support multi-source

---
 common/lib/xmodule/xmodule/video_module.py    |  5 ++---
 .../lib/xmodule/xmodule/videoalpha_module.py  | 20 ++++++++++++-------
 lms/templates/videoalpha.html                 |  6 +++---
 3 files changed, 18 insertions(+), 13 deletions(-)

diff --git a/common/lib/xmodule/xmodule/video_module.py b/common/lib/xmodule/xmodule/video_module.py
index 359b97df7c..27388f7630 100644
--- a/common/lib/xmodule/xmodule/video_module.py
+++ b/common/lib/xmodule/xmodule/video_module.py
@@ -4,6 +4,8 @@ import logging
 from lxml import etree
 from pkg_resources import resource_string, resource_listdir
 
+from django.http import Http404
+
 from xmodule.x_module import XModule
 from xmodule.raw_module import RawDescriptor
 from xmodule.modulestore.xml import XMLModuleStore
@@ -13,9 +15,6 @@ from xmodule.contentstore.content import StaticContent
 import datetime
 import time
 
-import datetime
-import time
-
 log = logging.getLogger(__name__)
 
 
diff --git a/common/lib/xmodule/xmodule/videoalpha_module.py b/common/lib/xmodule/xmodule/videoalpha_module.py
index 912505d0a6..06dd993f7a 100644
--- a/common/lib/xmodule/xmodule/videoalpha_module.py
+++ b/common/lib/xmodule/xmodule/videoalpha_module.py
@@ -4,6 +4,8 @@ import logging
 from lxml import etree
 from pkg_resources import resource_string, resource_listdir
 
+from django.http import Http404
+
 from xmodule.x_module import XModule
 from xmodule.raw_module import RawDescriptor
 from xmodule.modulestore.mongo import MongoModuleStore
@@ -13,9 +15,6 @@ from xmodule.contentstore.content import StaticContent
 import datetime
 import time
 
-import datetime
-import time
-
 log = logging.getLogger(__name__)
 
 
@@ -44,6 +43,9 @@ class VideoAlphaModule(XModule):
         self.position = 0
         self.show_captions = xmltree.get('show_captions', 'true')
         self.source = self._get_source(xmltree)
+        self.mp4_source = self._get_source(xmltree, ['mp4'])
+        self.wemb_source = self._get_source(xmltree, ['wemb'])
+        self.ogv_source = self._get_source(xmltree, ['ogv'])
         self.track = self._get_track(xmltree)
         self.start_time, self.end_time = self._get_timeframe(xmltree)
 
@@ -52,15 +54,16 @@ class VideoAlphaModule(XModule):
             if 'position' in state:
                 self.position = int(float(state['position']))
 
-    def _get_source(self, xmltree):
+    def _get_source(self, xmltree, extension=['mp4', 'ogv', 'avi', 'webm']):
         # find the first valid source
-        return self._get_first_external(xmltree, 'source')
+        condition = lambda src: any([src.endswith(ext) for ext in extension])
+        return self._get_first_external(xmltree, 'source', condition)
 
     def _get_track(self, xmltree):
         # find the first valid track
         return self._get_first_external(xmltree, 'track')
 
-    def _get_first_external(self, xmltree, tag):
+    def _get_first_external(self, xmltree, tag, condition=bool):
         """
         Will return the first valid element
         of the given tag.
@@ -69,7 +72,7 @@ class VideoAlphaModule(XModule):
         result = None
         for element in xmltree.findall(tag):
             src = element.get('src')
-            if src:
+            if condition(src):
                 result = src
                 break
         return result
@@ -134,6 +137,9 @@ class VideoAlphaModule(XModule):
             'streams': self.videoalpha_list(),
             'id': self.location.html_id(),
             'position': self.position,
+            'mp4_source': self.mp4_source,
+            'wemb_source': self.wemb_source,
+            'ogv_source': self.ogv_source,
             'source': self.source,
             'track': self.track,
             'display_name': self.display_name,
diff --git a/lms/templates/videoalpha.html b/lms/templates/videoalpha.html
index 7761eb980d..932d247c61 100644
--- a/lms/templates/videoalpha.html
+++ b/lms/templates/videoalpha.html
@@ -11,9 +11,9 @@
       id="video_${id}"
       class="video"
       data-streams=""
-      data-mp4-source="http://clips.vorwaerts-gmbh.de/VfE_html5.mp4"
-      data-webm-source="http://clips.vorwaerts-gmbh.de/VfE_html5.webm"
-      data-ogg-source="http://clips.vorwaerts-gmbh.de/VfE_html5.ogv"
+      ${'data-mp4-source="{}"'.format(mp4_source) if mp4_source else ''}
+      ${'data-wemb-source="{}"'.format(wemb_source) if wemb_source else ''}
+      ${'data-ogg-source="{}"'.format(ogv_source) if ogv_source else ''}
       data-caption-data-dir="${data_dir}"
       data-show-captions="${show_captions}"
       data-start="${start}"