Changeset 4166 for waeup/branches

Timestamp:

25 May 2009, 09:56:39 (16 years ago)

Author:

uli

Message:

Update datacenter.

File:

• waeup/branches/ulif-rewrite/src/waeup/datacenter.py (modified) (5 diffs)

waeup/branches/ulif-rewrite/src/waeup/datacenter.py

@@ -8 +8 @@
 import grok
 from datetime import datetime
+from zope.component import getUtility
 from zope.interface import Interface
-from waeup.interfaces import IWAeUPObject
-from waeup.viewlets import Index, MainArea, LeftSidebar
+from waeup.interfaces import IWAeUPObject, IWAeUPCSVImporter, ICSVDataReceivers
+from waeup.viewlets import Index, ImportCSV, MainArea, LeftSidebar
 
 class DataCenter(grok.Container):
@@ -16 +17 @@
     """
     storage = os.path.join(os.path.dirname(__file__), 'files')
+
+    def getImporters(self):
+        """Get a list of all importers available.
+
+        The search for available importers is done in two steps:
+
+        1) Look for a utility providing ICSVDataReceiver,
+
+        2) For every item of that utility: try to get an adapter
+           providing IWAeUPCSVImporter.
+        """
+        result = []
+        receivers = []
+        curr_obj = getattr(self, '__parent__', None)
+        while curr_obj is not None:
+            if ICSVDataReceivers.providedBy(curr_obj):
+                receivers = self.getCSVDataReceivers(curr_obj)
+                break
+            curr_obj = getattr(curr_obj, '__parent__', None)
+        for receiver in receivers:
+            try:
+                importer = IWAeUPCSVImporter(receiver)
+                result.append(importer)
+            except:
+                pass
+        return result
     
     def getFiles(self):
@@ -38 +65 @@
         self.storage = path
 
+
+    def getCSVDataReceivers(self, obj):
+        """Get a list of attributes, that can receive CSV data.
+        """
+        result = []
+        for attr_name in dir(obj):
+            if attr_name.startswith('_'):
+                continue
+            try:
+                attr = getattr(obj, attr_name)
+                # This might fail...
+                IWAeUPCSVImporter(attr)
+                result.append(attr)
+            except:
+                pass
+        return result
+
+        
 class IDataCenterFile(Interface):
     """A data center file.
@@ -47 +92 @@
     """A description of a file stored in data center.
     """
-
+    grok.implements(IDataCenterFile)
+    
     def __init__(self, context):
         self.context = context
@@ -141 +187 @@
     def render(self):
         return u'<div class="portlet"><a href="@@settings">Settings</a></div>'
-
+    
+class ImportCSVMain(grok.Viewlet):
+    grok.viewletmanager(MainArea)
+    grok.context(DataCenter)
+    grok.view(ImportCSV)
+    grok.require('waeup.manageUniversity')
+    
+    def update(self, *args, **kw):
+        print "ARGS: ", args, kw
+        return super(ImportCSVMain, self).update(*args, **kw)
+