81 lines
2.4 KiB
Python
81 lines
2.4 KiB
Python
import json
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import logging
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from lxml import etree
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from x_module import XModule, XModuleDescriptor
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from progress import Progress
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log = logging.getLogger("mitx.courseware.modules")
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class ModuleDescriptor(XModuleDescriptor):
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pass
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class Module(XModule):
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id_attribute = 'youtube'
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video_time = 0
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def handle_ajax(self, dispatch, get):
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'''
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Handle ajax calls to this video.
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TODO (vshnayder): This is not being called right now, so the position
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is not being saved.
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'''
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log.debug(u"GET {0}".format(get))
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log.debug(u"DISPATCH {0}".format(dispatch))
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if dispatch == 'goto_position':
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self.position = int(float(get['position']))
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log.info(u"NEW POSITION {0}".format(self.position))
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return json.dumps({'success':True})
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raise Http404()
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def get_progress(self):
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''' TODO (vshnayder): Get and save duration of youtube video, then return
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fraction watched.
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(Be careful to notice when video link changes and update)
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For now, we have no way of knowing if the video has even been watched, so
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just return None.
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'''
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return None
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def get_state(self):
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log.debug(u"STATE POSITION {0}".format(self.position))
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return json.dumps({ 'position': self.position })
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@classmethod
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def get_xml_tags(c):
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'''Tags in the courseware file guaranteed to correspond to the module'''
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return ["video"]
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def video_list(self):
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return self.youtube
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def get_html(self):
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return self.system.render_template('video.html', {
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'streams': self.video_list(),
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'id': self.item_id,
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'position': self.position,
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'name': self.name,
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'annotations': self.annotations,
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})
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def __init__(self, system, xml, item_id, state=None):
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XModule.__init__(self, system, xml, item_id, state)
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xmltree = etree.fromstring(xml)
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self.youtube = xmltree.get('youtube')
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self.name = xmltree.get('name')
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self.position = 0
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if state is not None:
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state = json.loads(state)
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if 'position' in state:
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self.position = int(float(state['position']))
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self.annotations=[(e.get("name"),self.render_function(e)) \
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for e in xmltree]
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class VideoSegmentDescriptor(XModuleDescriptor):
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pass
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