class NewtUI(object):
""" Newt UI implementation """
def __init__(self, frontend):
self._frontend = frontend
self.screen = SnackScreen()
self.textview_changes = None
self.button_bar = None
self.checkbox_tree_updates = None
self.layout = None
self._app = None
self._updates_received = False
def create_ui(self):
""" Creates/Draws the UI """
self.button_bar = ButtonBar(self.screen, ((_("Cancel"), "cancel"),
(_("Install"), "ok")),
compact=True)
self.textview_changes = Textbox(72, 8, "Changelog", True, True)
self.checkbox_tree_updates = CheckboxTree(height=8, width=72, scroll=1)
self.checkbox_tree_updates.setCallback(self.checkbox_changed)
self.layout = GridForm(self.screen, "Updates", 1, 5)
self.layout.add(self.checkbox_tree_updates, 0, 0)
# empty line to make it look less crowded
self.layout.add(Textbox(60, 1, " ", False, False), 0, 1)
self.layout.add(self.textview_changes, 0, 2)
# empty line to make it look less crowded
self.layout.add(Textbox(60, 1, " ", False, False), 0, 3)
self.layout.add(self.button_bar, 0, 4)
# FIXME: better progress than the current suspend/resume screen thing
self.screen.suspend()
def cache_reload_callback(self, percent, operation):
""" Cache reloading callback
:param percent: Percentage done
:param operation: Current operation
"""
if percent == RELOAD_CACHE_STATUS.DONE:
sys.stdout.write(_('Finished loading package cache.') + '\n')
elif percent == RELOAD_CACHE_STATUS.BEGIN:
sys.stdout.write(_('Loading package cache.') + '\n')
else:
sys.stdout.write('[%2d] %s\r' % (percent, operation))
def main(self, application):
""" UI main loop
:param application: class:`UpdateManager.Application.Application`
object
"""
self._app = application
while not self._updates_received:
time.sleep(0.3)
self.screen.resume()
res = self.layout.runOnce()
self.screen.finish()
button = self.button_bar.buttonPressed(res)
if button == "ok":
self.screen.suspend()
def get_updates(self):
sys.stdout.write(_("Building Updates List") + "\n")
sys.stdout.flush()
packages = self._app.get_available_updates()
# download_size = 0
categories = {}
for pkg in packages:
catid = pkg.get_update_category()
if not catid in categories.keys():
categories[catid] = [
pkg,
]
else:
categories[catid].append(pkg)
for (i, cat_id) in enumerate(categories.keys()):
cat_name = self._app.get_update_category_name(cat_id)
self.checkbox_tree_updates.append(cat_name, selected=True)
for pkg in categories[cat_id]:
self.checkbox_tree_updates.addItem(pkg.get_package_name(),
(i, snackArgs['append']),
pkg,
selected=True)
self._updates_received = True
def update_ui(self):
""" Redraws the UI """
self.layout.draw()
self.screen.refresh()
def checkbox_changed(self):
""" Handler for checkbox state-changes """
pkg = self.checkbox_tree_updates.getCurrent()
descr = ""
if hasattr(pkg, "get_description"):
descr = pkg.get_description()
# TODO: changelog handling/selection of changelog instead of
# description
self.textview_changes.setText(descr)
self.update_ui()
class UpdateManagerText(object):
DEBUG = False
def __init__(self, datadir):
self.screen = SnackScreen()
# FIXME: self.screen.finish() clears the screen (and all messages)
# there too
#atexit.register(self.restoreScreen)
self.button_bar = ButtonBar(self.screen, ((_("Cancel"), "cancel"),
(_("Install"), "ok")),
compact=True)
self.textview_changes = Textbox(72, 8, _("Changelog"), True, True)
self.checkbox_tree_updates = CheckboxTree(height=8, width=72, scroll=1)
self.checkbox_tree_updates.setCallback(self.checkbox_changed)
self.layout = GridForm(self.screen, _("Updates"), 1, 5)
self.layout.add(self.checkbox_tree_updates, 0, 0)
# empty line to make it look less crowded
self.layout.add(Textbox(60, 1, " ", False, False), 0, 1)
self.layout.add(self.textview_changes, 0, 2)
# empty line to make it look less crowded
self.layout.add(Textbox(60, 1, " ", False, False), 0, 3)
self.layout.add(self.button_bar, 0, 4)
# FIXME: better progress than the current suspend/resume screen thing
self.screen.suspend()
if not self.DEBUG:
apt_pkg.pkgsystem_lock()
self.openCache()
print(_("Building Updates List"))
self.fillstore()
if self.list.distUpgradeWouldDelete > 0:
print(
_("""
A normal upgrade can not be calculated, please run:
sudo apt-get dist-upgrade
This can be caused by:
* A previous upgrade which didn't complete
* Problems with some of the installed software
* Unofficial software packages not provided by Ubuntu
* Normal changes of a pre-release version of Ubuntu"""))
sys.exit(1)
self.screen.resume()
# def restoreScreen(self):
# self.screen.finish()
def openCache(self):
# open cache
progress = apt.progress.text.OpProgress()
if hasattr(self, "cache"):
self.cache.open(progress)
self.cache._initDepCache()
else:
self.cache = MyCache(progress)
self.actiongroup = apt_pkg.ActionGroup(self.cache._depcache)
# lock the cache
self.cache.lock = True
def fillstore(self):
# populate the list
self.list = UpdateList(self)
self.list.update(self.cache)
origin_list = sorted(self.list.pkgs,
key=operator.attrgetter("importance"),
reverse=True)
for (i, origin) in enumerate(origin_list):
self.checkbox_tree_updates.append(origin.description,
selected=True)
for pkg in self.list.pkgs[origin]:
self.checkbox_tree_updates.addItem(pkg.name,
(i, snackArgs['append']),
pkg,
selected=True)
def updateSelectionStates(self):
"""
helper that goes over the cache and updates the selection
states in the UI based on the cache
"""
for pkg in self.cache:
if pkg not in self.checkbox_tree_updates.item2key:
continue
# update based on the status
if pkg.marked_upgrade or pkg.marked_install:
self.checkbox_tree_updates.setEntryValue(pkg, True)
else:
self.checkbox_tree_updates.setEntryValue(pkg, False)
self.updateUI()
def updateUI(self):
self.layout.draw()
self.screen.refresh()
def get_news_and_changelog(self, pkg):
changes = ""
name = pkg.name
# if we don't have it, get it
if (name not in self.cache.all_changes
and name not in self.cache.all_news):
self.textview_changes.setText(_("Downloading changelog"))
lock = threading.Lock()
lock.acquire()
changelog_thread = threading.Thread(
target=self.cache.get_news_and_changelog, args=(name, lock))
changelog_thread.start()
# this lock should never take more than 2s even with network down
while lock.locked():
time.sleep(0.03)
# build changes from NEWS and changelog
if name in self.cache.all_news:
changes += self.cache.all_news[name]
if name in self.cache.all_changes:
changes += self.cache.all_changes[name]
return changes
def checkbox_changed(self):
# item is either a apt.package.Package or a str (for the headers)
pkg = self.checkbox_tree_updates.getCurrent()
descr = ""
if hasattr(pkg, "name"):
need_refresh = False
name = pkg.name
if self.options.show_description:
descr = getattr(pkg.candidate, "description", None)
else:
descr = self.get_news_and_changelog(pkg)
# check if it is a wanted package
selected = self.checkbox_tree_updates.getEntryValue(pkg)[1]
marked_install_upgrade = pkg.marked_install or pkg.marked_upgrade
if not selected and marked_install_upgrade:
need_refresh = True
pkg.mark_keep()
if selected and not marked_install_upgrade:
if not (name in self.list.held_back):
# FIXME: properly deal with "fromUser" here
need_refresh = True
pkg.mark_install()
# fixup any problems
if self.cache._depcache.broken_count:
need_refresh = True
Fix = apt_pkg.ProblemResolver(self.cache._depcache)
Fix.resolve_by_keep()
# update the list UI to reflect the cache state
if need_refresh:
self.updateSelectionStates()
self.textview_changes.setText(descr)
self.updateUI()
def main(self, options):
self.options = options
res = self.layout.runOnce()
self.screen.finish()
button = self.button_bar.buttonPressed(res)
if button == "ok":
self.screen.suspend()
res = self.cache.commit(apt.progress.text.AcquireProgress(),
apt.progress.base.InstallProgress())
class UpdateManagerText(object):
DEBUG = False
def __init__(self, datadir):
self.screen = SnackScreen()
# FIXME: self.screen.finish() clears the screen (and all messages)
# there too
#atexit.register(self.restoreScreen)
self.button_bar = ButtonBar(self.screen,
( (_("Cancel"), "cancel"),
(_("Install"), "ok")),
compact = True)
self.textview_changes = Textbox(72, 8, "Changelog", True, True)
self.checkbox_tree_updates = CheckboxTree(height=8, width=72, scroll=1)
self.checkbox_tree_updates.setCallback(self.checkbox_changed)
self.layout = GridForm(self.screen, "Updates", 1, 5)
self.layout.add(self.checkbox_tree_updates, 0, 0)
# empty line to make it look less crowded
self.layout.add(Textbox(60, 1," ",False, False), 0, 1)
self.layout.add(self.textview_changes, 0, 2)
# empty line to make it look less crowded
self.layout.add(Textbox(60, 1," ",False, False), 0, 3)
self.layout.add(self.button_bar, 0, 4)
# FIXME: better progress than the current suspend/resume screen thing
self.screen.suspend()
if not self.DEBUG:
apt_pkg.PkgSystemLock()
self.openCache()
print _("Building Updates List")
self.fillstore()
if self.list.distUpgradeWouldDelete > 0:
print _("""
A normal upgrade can not be calculated, please run:
sudo apt-get dist-upgrade
This can be caused by:
* A previous upgrade which didn't complete
* Problems with some of the installed software
* Unofficial software packages not provided by Ubuntu
* Normal changes of a pre-release version of Ubuntu""")
sys.exit(1)
self.screen.resume()
# def restoreScreen(self):
# self.screen.finish()
def openCache(self):
# open cache
progress = apt.progress.OpTextProgress()
if hasattr(self, "cache"):
self.cache.open(progress)
self.cache._initDepCache()
else:
self.cache = MyCache(progress)
self.actiongroup = apt_pkg.GetPkgActionGroup(self.cache._depcache)
# lock the cache
self.cache.lock = True
def fillstore(self):
# populate the list
self.list = UpdateList(self)
self.list.update(self.cache)
origin_list = self.list.pkgs.keys()
origin_list.sort(lambda x,y: cmp(x.importance, y.importance))
origin_list.reverse()
for (i, origin) in enumerate(origin_list):
self.checkbox_tree_updates.append(origin.description, selected=True)
for pkg in self.list.pkgs[origin]:
self.checkbox_tree_updates.addItem(pkg.name,
(i, snackArgs['append']),
pkg,
selected = True)
def updateSelectionStates(self):
"""
helper that goes over the cache and updates the selection
states in the UI based on the cache
"""
for pkg in self.cache:
if not self.checkbox_tree_updates.item2key.has_key(pkg):
continue
# update based on the status
if pkg.markedUpgrade or pkg.markedInstall:
self.checkbox_tree_updates.setEntryValue(pkg, True)
else:
self.checkbox_tree_updates.setEntryValue(pkg, False)
self.updateUI()
def updateUI(self):
self.layout.draw()
self.screen.refresh()
def get_news_and_changelog(self, pkg):
changes = ""
name = pkg.name
# if we don't have it, get it
if (not self.cache.all_changes.has_key(name) and
not self.cache.all_news.has_key(name)):
self.textview_changes.setText(_("Downloading changelog"))
lock = thread.allocate_lock()
lock.acquire()
thread.start_new_thread(self.cache.get_news_and_changelog,(name,lock))
# this lock should never take more than 2s even with network down
while lock.locked():
time.sleep(0.03)
# build changes from NEWS and changelog
if self.cache.all_news.has_key(name):
changes += self.cache.all_news[name]
if self.cache.all_changes.has_key(name):
changes += self.cache.all_changes[name]
return changes
def checkbox_changed(self):
# item is either a apt.package.Package or a str (for the headers)
pkg = self.checkbox_tree_updates.getCurrent()
descr = ""
if hasattr(pkg, "name"):
need_refresh = False
name = pkg.name
if self.options.show_description:
descr = pkg.description
else:
descr = self.get_news_and_changelog(pkg)
# check if it is a wanted package
selected = self.checkbox_tree_updates.getEntryValue(pkg)[1]
marked_install_upgrade = pkg.markedInstall or pkg.markedUpgrade
if not selected and marked_install_upgrade:
need_refresh = True
pkg.markKeep()
if selected and not marked_install_upgrade:
if not (name in self.list.held_back):
# FIXME: properly deal with "fromUser" here
need_refresh = True
pkg.markInstall()
# fixup any problems
if self.cache._depcache.BrokenCount:
need_refresh = True
Fix = apt_pkg.GetPkgProblemResolver(self.cache._depcache)
Fix.ResolveByKeep()
# update the list UI to reflect the cache state
if need_refresh:
self.updateSelectionStates()
self.textview_changes.setText(descr)
self.updateUI()
def main(self, options):
self.options = options
res = self.layout.runOnce()
self.screen.finish()
button = self.button_bar.buttonPressed(res)
if button == "ok":
self.screen.suspend()
res = self.cache.commit(apt.progress.text.AcquireProgress(),
apt.progress.base.InstallProgress())