#######################################################################################
""" Plinn implementation of CMFBTree
-$Id: HugePlinnFolder.py 1459 2009-02-02 00:57:24Z pin $
-$URL: http://svn.cri.ensmp.fr/svn/Plinn/branches/CMF-2.1/HugePlinnFolder.py $
+
+
"""
from BTrees.OIBTree import OIBTree
from Folder import PlinnFolder
from zope.event import notify
-from zope.app.container.contained import notifyContainerModified
+try :
+ from zope.app.container.contained import notifyContainerModified
+except ImportError :
+ ## Zope-2.13 compat
+ from zope.container.contained import notifyContainerModified
from events import ObjectPositionModified
from zope.component.factory import Factory
from Products.CMFCore.permissions import AddPortalFolders, \
- ManageProperties, \
- AccessContentsInformation
+ ManageProperties, \
+ AccessContentsInformation
from AccessControl import ClassSecurityInfo
from Globals import InitializeClass
from types import StringType
class HugePlinnFolder(BTreeFolder2Base, PlinnFolder) :
- """ Plinn Folder for large set of objects
- """
-
- security = ClassSecurityInfo()
-
- def __init__(self, id, title='') :
- PlinnFolder.__init__(self, id, title)
- BTreeFolder2Base.__init__(self, id)
-
- def _initBTrees(self):
- super(HugePlinnFolder, self)._initBTrees()
- self._pos2id_index = IOBTree()
- self._id2pos_index = OIBTree()
-
- def _checkId(self, id, allow_dup=0) :
- PlinnFolder._checkId(self, id, allow_dup)
- BTreeFolder2Base._checkId(self, id, allow_dup)
-
- security.declareProtected(AddPortalFolders, 'manage_addHugePlinnFolder')
- def manage_addHugePlinnFolder(self, id, title='', REQUEST=None) :
- """ Add new a new HugePlinnFolder object with id *id*.
- """
- ob = HugePlinnFolder(id, title)
- self._setObject(id, ob)
- if REQUEST is not None :
- return self.folder_contents(self, REQUEST, portal_status_message='Folder added')
-
- def _setOb(self, id, object):
- super(HugePlinnFolder, self)._setOb(id, object)
- pos = self.objectCount() - 1
- self._pos2id_index[pos] = id
- self._id2pos_index[id] = pos
-
- def _delOb(self, id):
- pos = self._id2pos_index[id]
- self._id2pos_index.pop(id)
-
- for p in xrange(pos+1, self.objectCount()) :
- ident = self._pos2id_index[p]
- self._pos2id_index[p-1] = ident
- self._id2pos_index[ident] = p-1
-
- self._pos2id_index.pop(self.objectCount()-1)
-
- super(HugePlinnFolder, self)._delOb(id)
-
- security.declareProtected(AccessContentsInformation, 'objectIds')
- def objectIds(self, spec=None) :
- if spec is not None :
- return super(HugePlinnFolder, self).objectIds(spec)
-
- pos2id = lambda pos : self._pos2id_index[pos]
- return LazyMap(pos2id, xrange(self.objectCount()))
-
-
-
- security.declareProtected(ManageProperties, 'moveObjectsByDelta')
- def moveObjectsByDelta(self, ids, delta, subset_ids=None,
- suppress_events=False):
- """ Move specified sub-objects by delta.
- """
- if isinstance(ids, StringType):
- ids = (ids,)
-
- id2pos = self._id2pos_index
- pos2id = self._pos2id_index
- for id in ids :
- oldPosition = id2pos[id]
- newPosition = max(oldPosition + delta, 0)
-
- shift = delta > 0 and 1 or -1
- for p in xrange(oldPosition, newPosition, shift) :
- ident = pos2id[p+shift]
- pos2id[p] = ident
- id2pos[ident] = p
- if not suppress_events :
- notify(ObjectPositionModified(self[ident], self, p))
-
- id2pos[id] = newPosition
- pos2id[newPosition] = id
- if not suppress_events :
- notify(ObjectPositionModified(self[id], self, newPosition))
-
- if not suppress_events :
- notifyContainerModified(self)
-
-
- def getObjectPosition(self, id):
- """ Get the position of an object by its id.
- """
- try :
- return self._id2pos_index[id]
- except KeyError :
- raise ValueError('The object with the id "%s" does not exist.' % id)
-
+ """ Plinn Folder for large set of objects
+ """
+
+ security = ClassSecurityInfo()
+
+ __getitem__ = PlinnFolder.__getitem__
+
+ def __init__(self, id, title='') :
+ PlinnFolder.__init__(self, id, title)
+ BTreeFolder2Base.__init__(self, id)
+
+ def _initBTrees(self):
+ super(HugePlinnFolder, self)._initBTrees()
+ self._pos2id_index = IOBTree()
+ self._id2pos_index = OIBTree()
+
+ def _checkId(self, id, allow_dup=0) :
+ PlinnFolder._checkId(self, id, allow_dup)
+ BTreeFolder2Base._checkId(self, id, allow_dup)
+
+ security.declareProtected(AddPortalFolders, 'manage_addHugePlinnFolder')
+ def manage_addHugePlinnFolder(self, id, title='', REQUEST=None) :
+ """ Add new a new HugePlinnFolder object with id *id*.
+ """
+ ob = HugePlinnFolder(id, title)
+ self._setObject(id, ob)
+ if REQUEST is not None :
+ return self.folder_contents(self, REQUEST, portal_status_message='Folder added')
+
+ def _setOb(self, id, object):
+ super(HugePlinnFolder, self)._setOb(id, object)
+ pos = self.objectCount() - 1
+ self._pos2id_index[pos] = id
+ self._id2pos_index[id] = pos
+
+ def _delOb(self, id):
+ pos = self._id2pos_index[id]
+ self._id2pos_index.pop(id)
+
+ for p in xrange(pos+1, self.objectCount()) :
+ ident = self._pos2id_index[p]
+ self._pos2id_index[p-1] = ident
+ self._id2pos_index[ident] = p-1
+
+ self._pos2id_index.pop(self.objectCount()-1)
+
+ super(HugePlinnFolder, self)._delOb(id)
+
+ security.declareProtected(AccessContentsInformation, 'objectIds')
+ def objectIds(self, spec=None) :
+ if spec is not None :
+ return super(HugePlinnFolder, self).objectIds(spec)
+
+ pos2id = lambda pos : self._pos2id_index[pos]
+ return LazyMap(pos2id, xrange(self.objectCount()))
+
+
+
+ security.declareProtected(ManageProperties, 'moveObjectsByDelta')
+ def moveObjectsByDelta(self, ids, delta, subset_ids=None,
+ suppress_events=False):
+ """ Move specified sub-objects by delta.
+ """
+ if isinstance(ids, StringType):
+ ids = (ids,)
+
+ id2pos = self._id2pos_index
+ pos2id = self._pos2id_index
+ for id in ids :
+ oldPosition = id2pos[id]
+ newPosition = max(oldPosition + delta, 0)
+
+ shift = delta > 0 and 1 or -1
+ for p in xrange(oldPosition, newPosition, shift) :
+ ident = pos2id[p+shift]
+ pos2id[p] = ident
+ id2pos[ident] = p
+ if not suppress_events :
+ notify(ObjectPositionModified(self[ident], self, p))
+
+ id2pos[id] = newPosition
+ pos2id[newPosition] = id
+ if not suppress_events :
+ notify(ObjectPositionModified(self[id], self, newPosition))
+
+ if not suppress_events :
+ notifyContainerModified(self)
+
+ security.declareProtected(ManageProperties, 'moveObjectsAfter')
+ def moveObjectsAfter(self, ids, targetId, suppress_events=False):
+ assert targetId not in ids
+
+ id2pos = self._id2pos_index
+ pos2id = self._pos2id_index
+ targetPos = id2pos[targetId]
+ minMovedPos = min([id2pos[id] for id in ids])
+ maxMovedPos = max([id2pos[id] for id in ids])
+
+ for id in ids :
+ assert id == pos2id.pop(id2pos.pop(id))
+
+ id2posUpdate = {}
+ pos2idUpdate = {}
+
+ if targetPos < minMovedPos :
+ # selection moved before the first item position
+ for i, id in enumerate(ids) :
+ pos = i + targetPos + 1
+ id2posUpdate[id] = pos
+ pos2idUpdate[pos] = id
+
+ for id in IndexIterator(pos2id, targetPos+1, maxMovedPos):
+ pos = pos + 1
+ id2posUpdate[id] = pos
+ pos2idUpdate[pos] = id
+
+ elif targetPos > minMovedPos and targetPos < maxMovedPos :
+ # selection moved between the first and last item positions
+ pos = minMovedPos
+ # move items placed between the first item position and the target position
+ for id in IndexIterator(pos2id, minMovedPos+1, targetPos) :
+ id2posUpdate[id] = pos
+ pos2idUpdate[pos] = id
+ pos += 1
+ # move selected items
+ for id in ids :
+ id2posUpdate[id] = pos
+ pos2idUpdate[pos] = id
+ pos += 1
+ # move items positioned between the target position and the moved item max position
+ for id in IndexIterator(pos2id, targetPos+1, maxMovedPos) :
+ id2posUpdate[id] = pos
+ pos2idUpdate[pos] = id
+ pos += 1
+
+ else :
+ # selection moved after the last item position
+ pos = minMovedPos
+ for id in IndexIterator(pos2id, minMovedPos+1, targetPos) :
+ id2posUpdate[id] = pos
+ pos2idUpdate[pos] = id
+ pos += 1
+
+ pos = targetPos - len(ids) + 1
+ for id in ids :
+ id2posUpdate[id] = pos
+ pos2idUpdate[pos] = id
+ pos +=1
+
+ id2pos.update(id2posUpdate)
+ pos2id.update(pos2idUpdate)
+
+ if not suppress_events :
+ for id, pos in id2posUpdate.items() :
+ notify(ObjectPositionModified(self[id], self, pos))
+
+ notifyContainerModified(self)
+
+ def getObjectPosition(self, id):
+ """ Get the position of an object by its id.
+ """
+ try :
+ return self._id2pos_index[id]
+ except KeyError :
+ raise ValueError('The object with the id "%s" does not exist.' % id)
+
+
+class IndexIterator :
+ def __init__(self, d, start, stop) :
+ self.d = d
+ self.pos = start
+ self.stop = stop
+
+ def __iter__(self) :
+ return self
+
+ def next(self) :
+ try :
+ if self.pos > self.stop :
+ raise StopIteration
+ v = self.d[self.pos]
+ self.pos = self.pos + 1
+ return v
+ except KeyError :
+ self.pos = self.pos + 1
+ return self.next()
+
InitializeClass(HugePlinnFolder)
HugePlinnFolderFactory = Factory(HugePlinnFolder)
projects / Plinn.git / blobdiff