Changeset 7785 for main/waeup.sirp/branches/ulif-schoolgrades/src

Timestamp:

7 Mar 2012, 23:10:44 (13 years ago)

Author:

uli

Message:

Put all these widget, schema and similar stuff for school result
entries into one module. I think this is easier to maintain.

File:

• main/waeup.sirp/branches/ulif-schoolgrades/src/waeup/sirp/schoolgrades.py (modified) (1 diff)

main/waeup.sirp/branches/ulif-schoolgrades/src/waeup/sirp/schoolgrades.py

@@ -19 +19 @@
 """
 import grok
+from zope.formlib.interfaces import IInputWidget, IDisplayWidget
+from zope.publisher.interfaces.browser import IBrowserRequest
 from zope.schema.fieldproperty import FieldProperty
+from zope.schema.interfaces import IObject
+from zope.schema import Object
 from waeup.sirp.interfaces import IResultEntry
+from waeup.sirp.widgets.objectwidget import (
+    SIRPObjectWidget, SIRPObjectDisplayWidget
+    )
 
 class ResultEntry(grok.Model):
-    """A result entry containing a subject and a grade.
+    """A result entry contains a subject and a grade.
     """
     grok.implements(IResultEntry)
     subject = FieldProperty(IResultEntry['subject'])
     grade = FieldProperty(IResultEntry['grade'])
+
+class IResultEntryField(IObject):
+    """A zope.schema-like field for usage in interfaces.
+
+    Marker interface to distuingish result entries from ordinary
+    object fields. Needed for registration of widgets.
+    """
+
+class ResultEntryField(Object):
+    """A zope.schema-like field for usage in interfaces.
+
+    If you want to define an interface containing result entries, you
+    can do so like this::
+
+      class IMyInterface(Interface):
+          my_result_entry = ResultEntryField()
+
+    Default widgets are registered to render result entry fields.
+    """
+    grok.implements(IResultEntryField)
+
+    def __init__(self, **kw):
+        super(ResultEntryField, self).__init__(IResultEntry, **kw)
+        return
+
+# register SIRPObjectWidgets as default widgets for IResultEntryFields
+@grok.adapter(IResultEntryField, IBrowserRequest)
+@grok.implementer(IInputWidget)
+def result_entry_input_widget(obj, req):
+    return SIRPObjectWidget(obj, req, ResultEntry)
+
+# register a display widget for IResultEntryFields
+@grok.adapter(IResultEntryField, IBrowserRequest)
+@grok.implementer(IDisplayWidget)
+def result_entry_display_widget(obj, req):
+    return SIRPObjectDisplayWidget(obj, req, ResultEntry)