+++ /dev/null
-# the supervisor for Plugins
-# keeps a handle on all present plugins for managing their queries in a consistent way
-# it is expected to exist one such object for a given page
-
-import json
-
-from engine.prelude import Prelude
-from engine.manifoldapi import ManifoldAPI
-from myslice.config import Config
-
-# decorator to deflect calls on this Page to its prelude
-def to_prelude (method):
- def actual (self, *args, **kwds):
- prelude_method=Prelude.__dict__[method.__name__]
- return prelude_method(self.prelude,*args, **kwds)
- return actual
-
-class Page:
-
- def __init__ (self, request):
- self.request=request
- # all plugins mentioned in this page
- self._plugins = {}
- # queue of queries
- self._queue=[]
- # global prelude object
- self.prelude=Prelude(css_files='css/plugin.css')
- # load metadata
- self._metadata={}
- # do not call this uncondionnally as we might not even have logged in
- # self.expose_js_metadata()
-
- # record known plugins hashed on their domid
- def record_plugin (self, plugin):
- self._plugins[plugin.domid]=plugin
-
- def get_plugin (self, domid):
- return self._plugins.get(domid,None)
-
- def reset_queue (self):
- self._queue = []
-
- # the js async methods (see manifold_async_success)
- # offer the option to deliver the result to a specific DOM elt
- # otherwise (i.e. if domid not provided)
- # it goes through the pubsub using query's uuid
- def enqueue_query (self, query, domid=None):
- self._queue.append ( (query,domid,) )
-
- # return the javascript that triggers all the queries
- def exec_queue_asynchroneously (self):
- js = ""
- js += "var async_queries = new Array();\n"
- for (query,domid) in self._queue:
- qjson=query.to_json()
- id="'%s'"%domid if domid else 'undefined'
- js += "async_queries.push({'query':%(qjson)s, 'id':%(id)s});\n"%locals()
- js += "onFunctionAvailable('manifold_async_exec', function() {manifold_async_exec(async_queries);}, this, true);"
- self.reset_queue()
- # run only once the document is ready
- js = "$(document).ready(function(){%(js)s})"%locals()
- self.add_js_chunks (js)
-
-
- def expose_js_metadata(self):
- request=self.request
- # xxx this code should probably not be called unconditionnally at page creation time
- # because we're not sure a user is logged in so we might have no session...
- if 'manifold' not in request.session:
- print "Page.expose_js_metadata: no 'manifold' in session... - skipping"
- return
- # use cached version if present
- if 'metadata' in request.session.keys():
- self._metadata = request.session['metadata']
- else:
- manifold_api_session_auth = request.session['manifold']['auth']
- manifold_api = ManifoldAPI(auth=manifold_api_session_auth)
-
- fields = ['table', 'column.column',
- 'column.description','column.header', 'column.title',
- 'column.unit', 'column.info_type',
- 'column.resource_type', 'column.value_type',
- 'column.allowed_values', 'column.platforms.platform',
- 'column.platforms.platform_url']
-
- results = manifold_api.Get('metadata:table', [], [], fields)
-
- for res in results:
- method = res['table']
- self._metadata[method] = res
-
- request.session['metadata'] = self._metadata
-
- javascript = "all_headers=" + json.dumps(self._metadata) + ";"
- self.add_js_chunks(javascript)
-
- def metadata_get_fields(self, method):
- return self._metadata[method]['column'].sort()
-
- def expose_js_manifold_config (self):
- self.add_js_chunks(Config.manifold_js_export())
-
- #################### requirements/prelude management
- # just forward to self.prelude - see decorator above
- @to_prelude
- def add_js_files (self):pass
- @to_prelude
- def add_css_files (self):pass
- @to_prelude
- def add_js_chunks (self):pass
- @to_prelude
- def add_css_chunks (self):pass
- @to_prelude
- def template_env (self):pass