/usr/share/pyshared/tables/undoredo.py is in python-tables 2.3.1-2ubuntu3.
This file is owned by root:root, with mode 0o644.
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#
# License: BSD
# Created: February 15, 2005
# Author: Ivan Vilata - reverse:net.selidor@ivan
#
# $Source$
# $Id$
#
########################################################################
"""
Support for undoing and redoing actions.
Functions:
* undo(file, operation, *args)
* redo(file, operation, *args)
* moveToShadow(file, path)
* moveFromShadow(file, path)
* attrToShadow(file, path, name)
* attrFromShadow(file, path, name)
Misc variables:
`__docformat__`
The format of documentation strings in this module.
`__version__`
Repository version of this file.
"""
from tables.path import splitPath
__docformat__ = 'reStructuredText'
"""The format of documentation strings in this module."""
__version__ = '$Revision$'
"""Repository version of this file."""
def undo(file_, operation, *args):
if operation == 'CREATE':
undoCreate(file_, args[0])
elif operation == 'REMOVE':
undoRemove(file_, args[0])
elif operation == 'MOVE':
undoMove(file_, args[0], args[1])
elif operation == 'ADDATTR':
undoAddAttr(file_, args[0], args[1])
elif operation == 'DELATTR':
undoDelAttr(file_, args[0], args[1])
else:
raise NotImplementedError("""\
the requested unknown operation %r can not be undone; \
please report this to the authors""" % operation)
def redo(file_, operation, *args):
if operation == 'CREATE':
redoCreate(file_, args[0])
elif operation == 'REMOVE':
redoRemove(file_, args[0])
elif operation == 'MOVE':
redoMove(file_, args[0], args[1])
elif operation == 'ADDATTR':
redoAddAttr(file_, args[0], args[1])
elif operation == 'DELATTR':
redoDelAttr(file_, args[0], args[1])
else:
raise NotImplementedError("""\
the requested unknown operation %r can not be redone; \
please report this to the authors""" % operation)
def moveToShadow(file_, path):
node = file_._getNode(path)
(shparent, shname) = file_._shadowName()
node._g_move(shparent, shname)
def moveFromShadow(file_, path):
(shparent, shname) = file_._shadowName()
node = shparent._f_getChild(shname)
(pname, name) = splitPath(path)
parent = file_._getNode(pname)
node._g_move(parent, name)
def undoCreate(file_, path):
moveToShadow(file_, path)
def redoCreate(file_, path):
moveFromShadow(file_, path)
def undoRemove(file_, path):
moveFromShadow(file_, path)
def redoRemove(file_, path):
moveToShadow(file_, path)
def undoMove(file_, origpath, destpath):
(origpname, origname) = splitPath(origpath)
node = file_._getNode(destpath)
origparent = file_._getNode(origpname)
node._g_move(origparent, origname)
def redoMove(file_, origpath, destpath):
(destpname, destname) = splitPath(destpath)
node = file_._getNode(origpath)
destparent = file_._getNode(destpname)
node._g_move(destparent, destname)
def attrToShadow(file_, path, name):
node = file_._getNode(path)
attrs = node._v_attrs
value = getattr(attrs, name)
(shparent, shname) = file_._shadowName()
shattrs = shparent._v_attrs
# Set the attribute only if it has not been kept in the shadow.
# This avoids re-pickling complex attributes on REDO.
if not shname in shattrs:
shattrs._g__setattr(shname, value)
attrs._g__delattr(name)
def attrFromShadow(file_, path, name):
(shparent, shname) = file_._shadowName()
shattrs = shparent._v_attrs
value = getattr(shattrs, shname)
node = file_._getNode(path)
node._v_attrs._g__setattr(name, value)
# Keeping the attribute in the shadow allows reusing it on Undo/Redo.
##shattrs._g__delattr(shname)
def undoAddAttr(file_, path, name):
attrToShadow(file_, path, name)
def redoAddAttr(file_, path, name):
attrFromShadow(file_, path, name)
def undoDelAttr(file_, path, name):
attrFromShadow(file_, path, name)
def redoDelAttr(file_, path, name):
attrToShadow(file_, path, name)
## Local Variables:
## mode: python
## py-indent-offset: 4
## tab-width: 4
## End:
|