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# DistUpgradeView.py
#
# Copyright (c) 2004,2005 Canonical
#
# Author: Michael Vogt <michael.vogt@ubuntu.com>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA
class DistUpgradeView(object):
" abstraction for the upgrade view "
def __init__(self):
pass
def getOpCacheProgress(self):
" return a OpProgress() subclass for the given graphic"
return apt.progress.OpProgress()
def getFetchProgress(self):
" return a fetch progress object "
return apt.progress.FetchProgress()
def getInstallProgress(self):
" return a install progress object "
return apt.progress.InstallProgress()
def updateStatus(self, msg):
""" update the current status of the distUpgrade based
on the current view
"""
pass
def setStep(self, step):
""" we have 5 steps current for a upgrade:
1. Analyzing the system
2. Updating repository information
3. Performing the upgrade
4. Post upgrade stuff
5. Complete
"""
pass
def confirmChanges(self, summary, changes, downloadSize):
""" display the list of changed packages (apt.Package) and
return if the user confirms them
"""
self.toInstall = []
self.toUpgrade = []
self.toRemove = []
for pkg in changes:
if pkg.markedInstall: self.toInstall.append(pkg.name)
elif pkg.markedUpgrade: self.toUpgrade.append(pkg.name)
elif pkg.markedDelete: self.toRemove.append(pkg.name)
# no downgrades, re-installs
assert(len(self.toInstall)+len(self.toUpgrade)+len(self.toRemove) == len(changes))
def askYesNoQuestion(self, summary, msg):
" ask a Yes/No question and return True on 'Yes' "
pass
def confirmRestart(self):
" generic ask about the restart, can be overriden "
summary = _("Reboot required")
msg = _("The upgrade is finished now. "
"A reboot is required to "
"now, do you want to do this "
"now?")
return self.askYesNoQuestion(summary, msg)
def error(self, summary, msg, extended_msg=None):
" display a error "
pass
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