def allowRename(self):
if IRenameNotAllowed.providedBy(self.context):
return False
container = self.context.__parent__
return (IWriteContainer.providedBy(container) and
not IContainerNamesContainer.providedBy(container) and
canAccess(container, '__setitem__'))
def nameAllowed(self):
"""Return whether names can be input by the user."""
context = self.context
if IContentType.providedBy(context):
context = context.context
if IAdding.providedBy(context):
context = context.context
if IWriteContainer.providedBy(context):
return not IContainerNamesContainer.providedBy(context)
else:
return False
def checkContentType(container, contenttype):
if not (IWriteContainer.providedBy(container) or IContentContainer.providedBy(container)):
raise TypeError("Container is not a valid Zope container.")
ct = IContentType(container, None)
if ct is None:
raise InvalidContainerType(container)
# check item precondition
precondition = ctContains(ct)
if precondition is not None:
precondition(container, "", contenttype)
# check the container constraint
validate = queryUtility(IContainerTypesConstraint, contenttype.name)
if validate is not None:
validate(container)
def checkObject(container, name, object):
"""Check containement constraints for an object and container"""
if not (IWriteContainer.providedBy(container) or IContentContainer.providedBy(container)):
raise TypeError("Container is not a valid Zope container.")
# check item precondition
precondition = contains(container)
if precondition is not None:
precondition(container, name, object)
else:
contenttype = IContentType(object, None)
if contenttype is None:
raise InvalidItemType(container, object, ())
# check the container constraint
validate = containers(object)
if validate is not None:
validate(container)
def fields(self):
if self.step.name != 'content' or \
not isinstance(self.step, ContentStep):
return Fields()
context = self.context
if not ISite.providedBy(context):
if IRenameNotAllowed.providedBy(context):
return Fields()
if not IContentNamesContainer.providedBy(context):
location = context.__parent__
if IWriteContainer.providedBy(location) and \
not IContainerNamesContainer.providedBy(location):
return Fields(IContentRenameForm)
return Fields()