def canBeHaunted(to_be_haunted):
if IGhost.providedBy(to_be_haunted):
return 0
if (IContainer.providedBy(to_be_haunted) or
IContent.providedBy(to_be_haunted)):
return 1
return 0
#END
def get_link_status(self, content=None):
"""return an error code if this version of the ghost is broken.
returning None means the ghost is Ok.
"""
if content is None:
content = self.get_haunted_unrestricted(check=0)
if self._content_path is None:
return self.LINK_EMPTY
if content is None:
return self.LINK_VOID
if IContainer.providedBy(content):
return self.LINK_FOLDER
if not IContent.providedBy(content):
return self.LINK_NO_CONTENT
if IGhost.providedBy(content):
return self.LINK_GHOST
return self.LINK_OK
