def _addObjects(self, obj):
"""
Adds any objects that are specified by the featurelet's info.
First checks for a previous installation of this featurelet,
skips anything that was previously installed.
Raises an error if content of the same id that was NOT a part
of a previous installation of this featurelet exists.
"""
info = self._info
supporter = IFeatureletSupporter(obj)
objmgr = IObjectManager(obj)
prior_ids = tuple()
prior_info = supporter.getFeatureletDescriptor(self.id)
if prior_info is not None:
prior_content = prior_info.get('objects', tuple())
prior_ids = [item['id'] for item in prior_content]
for item in info.get('objects', tuple()):
iid = item['id']
if iid not in prior_ids:
if objmgr.hasObject(iid):
msg = "Object with id '%s' already exists." % iid
raise zExceptions.BadRequest, msg
try:
newobj = item['class']()
except TypeError:
# might need an id passed to the constructor
newobj = item['class'](iid)
objmgr._setOb(iid, newobj)
def _addContent(self, obj):
"""
Adds any CMF content that is specified by the featurelet's
info. First checks for a previous installation of this
featurelet, skips anything that was previously installed.
Raises an error if content of the same id that was NOT a part
of a previous installation of this featurelet exists.
"""
ttool = getToolByName(obj, 'portal_types')
info = self._info
supporter = IFeatureletSupporter(obj)
objmgr = IObjectManager(obj)
prior_ids = tuple()
prior_info = supporter.getFeatureletDescriptor(self.id)
if prior_info is not None:
prior_content = prior_info.get('content', tuple())
prior_ids = [item['id'] for item in prior_content]
for item in info.get('content', tuple()):
if item['id'] not in prior_ids:
ttool.constructContent(item['portal_type'],
objmgr, item['id'],
title=item['title'])
def removePackage(self, obj):
"""
See IFeaturelet.
"""
supporter = IFeatureletSupporter(obj)
prior_info = supporter.getFeatureletDescriptor(self.id)
if prior_info is None:
return
self._removeObjects(obj, prior_info, 'objects')
if getToolByName is not None:
self._removeObjects(obj, prior_info, 'content')
self._removeMenuItems(obj, prior_info)
if self.installed_marker is not None:
directlyProvides(obj, directlyProvidedBy(obj) -
self.installed_marker)
