99 lines
3.2 KiB
Python
99 lines
3.2 KiB
Python
from x_module import XModule
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from lxml import etree
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from django.http import Http404
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import json
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## TODO: Abstract out from Django
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from django.conf import settings
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from djangomako.shortcuts import render_to_response, render_to_string
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class SequentialModule(XModule):
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''' Layout module which lays out content in a temporal sequence
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'''
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id_attribute = 'id'
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def get_state(self):
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return json.dumps({ 'position':self.position })
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def get_xml_tags():
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return ["sequential", 'tab']
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def get_html(self):
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self.render()
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return self.content
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def get_init_js(self):
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self.render()
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return self.init_js
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def get_destroy_js(self):
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self.render()
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return self.destroy_js
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def handle_ajax(self, dispatch, get):
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print "GET", get
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print "DISPATCH", dispatch
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if dispatch=='goto_position':
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self.position = int(get['position'])
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return json.dumps({'success':True})
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raise Http404()
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def render(self):
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if self.rendered:
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return
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def j(m):
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''' jsonify contents so it can be embedded in a js array
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We also need to split </script> tags so they don't break
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mid-string'''
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if 'init_js' not in m: m['init_js']=""
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if 'type' not in m: m['init_js']=""
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content=json.dumps(m['content'])
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content=content.replace('</script>', '<"+"/script>')
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return {'content':content,
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"destroy_js":m['destroy_js'],
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'init_js':m['init_js'],
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'type':m['type']}
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self.contents=[(e.get("name"),j(self.render_function(e))) \
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for e in self.xmltree]
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js=""
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params={'items':self.contents,
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'id':self.item_id,
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'position': self.position}
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# TODO/BUG: Destroy JavaScript should only be called for the active view
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# This calls it for all the views
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#
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# To fix this, we'd probably want to have some way of assigning unique
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# IDs to sequences.
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destroy_js="".join([e[1]['destroy_js'] for e in self.contents if 'destroy_js' in e[1]])
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if self.xmltree.tag == 'sequential':
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self.init_js=js+render_to_string('seq_module.js',params)
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self.destroy_js=destroy_js
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self.content=render_to_string('seq_module.html',params)
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if self.xmltree.tag == 'tab':
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params['id'] = 'tab'
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self.init_js=js+render_to_string('tab_module.js',params)
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self.destroy_js=destroy_js
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self.content=render_to_string('tab_module.html',params)
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self.rendered = True
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def __init__(self, xml, item_id, ajax_url=None, track_url=None, state=None, track_function=None, render_function = None):
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XModule.__init__(self, xml, item_id, ajax_url, track_url, state, track_function, render_function)
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self.xmltree=etree.fromstring(xml)
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self.position = 1
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if state!=None:
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state = json.loads(state)
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if 'position' in state: self.position = int(state['position'])
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self.rendered = False
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