def get_icon(self, iface):
"""Get an icon for this interface. If the icon is in the cache, use that.
If not, start a download. If we already started a download (successful or
not) do nothing. Returns None if no icon is currently available."""
try:
# Try the in-memory cache
return self.cached_icon[iface.uri]
except KeyError:
# Try the on-disk cache
iconpath = iface_cache.get_icon_path(iface)
if iconpath:
icon = self._load_icon(iconpath)
# (if icon is None, cache the fact that we can't load it)
self.cached_icon[iface.uri] = icon
else:
icon = None
# Download a new icon if we don't have one, or if the
# user did a 'Refresh'
if iconpath is None or self.update_icons:
fetcher = self.policy.download_icon(iface)
if fetcher:
if iface.uri not in self.cached_icon:
self.cached_icon[iface.uri] = None # Only try once
@tasks. async
def update_display():
yield fetcher
try:
tasks.check(fetcher)
# Try to insert new icon into the cache
# If it fails, we'll be left with None in the cached_icon so
# we don't try again.
iconpath = iface_cache.get_icon_path(iface)
if iconpath:
self.cached_icon[iface.uri] = self._load_icon(
iconpath)
self.build_tree()
else:
warn("Failed to download icon for '%s'", iface)
except Exception, ex:
import traceback
traceback.print_exc()
self.policy.handler.report_error(ex)
update_display()
# elif fetcher is None: don't store anything in cached_icon
# Note: if no icon is available for downloading,
# more attempts are made later.
# It can happen that no icon is yet available because
# the interface was not downloaded yet, in which case
# it's desireable to try again once the interface is available
return icon
def finish(): import xdgutils iface = iface_cache.get_interface(model.canonical_iface_uri(uri.get_text())) try: icon_path = iface_cache.get_icon_path(iface) xdgutils.add_to_menu(iface, icon_path, category.get_active_text()) except SafeException, ex: box = gtk.MessageDialog(self.window, gtk.DIALOG_MODAL, gtk.MESSAGE_ERROR, gtk.BUTTONS_OK, str(ex)) box.run() box.destroy()
def finish(): import xdgutils iface = iface_cache.get_interface(model.canonical_iface_uri(uri.get_text())) try: icon_path = iface_cache.get_icon_path(iface) xdgutils.add_to_menu(iface, icon_path, categories[category.get_active()]) except SafeException, ex: box = gtk.MessageDialog(self.window, gtk.DIALOG_MODAL, gtk.MESSAGE_ERROR, gtk.BUTTONS_OK, str(ex)) box.run() box.destroy()
def download_icon(self, interface, force = False):
"""Download an icon for this interface and add it to the
icon cache. If the interface has no icon or we are offline, do nothing.
@return: the task doing the import, or None
@rtype: L{tasks.Task}"""
if self.network_use == network_offline:
info("Not downloading icon for %s as we are off-line", interface)
return
modification_time = None
existing_icon = iface_cache.get_icon_path(interface)
if existing_icon:
file_mtime = os.stat(existing_icon).st_mtime
from email.utils import formatdate
modification_time = formatdate(timeval = file_mtime, localtime = False, usegmt = True)
return self.fetcher.download_icon(interface, force, modification_time)
def finish():
from . import xdgutils
iface_uri = model.canonical_iface_uri(uri.get_text())
iface = iface_cache.get_interface(iface_uri)
feed = iface_cache.get_feed(iface_uri)
try:
icon_path = iface_cache.get_icon_path(iface)
xdgutils.add_to_menu(feed, icon_path,
categories[category.get_active()])
except SafeException as ex:
box = gtk.MessageDialog(self.window, gtk.DIALOG_MODAL,
gtk.MESSAGE_ERROR, gtk.BUTTONS_OK,
str(ex))
box.run()
box.destroy()
else:
self.window.destroy()
def update_display():
yield fetcher
try:
tasks.check(fetcher)
# Try to insert new icon into the cache
# If it fails, we'll be left with None in the cached_icon so
# we don't try again.
iconpath = iface_cache.get_icon_path(iface)
if iconpath:
self.cached_icon[iface.uri] = self._load_icon(
iconpath)
self.build_tree()
else:
warn("Failed to download icon for '%s'", iface)
except Exception, ex:
import traceback
traceback.print_exc()
self.policy.handler.report_error(ex)
def update_details_page():
iface = iface_cache.get_interface(model.canonical_iface_uri(uri.get_text()))
about.set_text('%s - %s' % (iface.get_name(), iface.summary))
icon_path = iface_cache.get_icon_path(iface)
from zeroinstall.gtkui import icon
icon_pixbuf = icon.load_icon(icon_path)
if icon_pixbuf:
icon_widget.set_from_pixbuf(icon_pixbuf)
feed_category = None
for meta in iface.get_metadata(XMLNS_IFACE, 'category'):
feed_category = meta.content
break
if feed_category:
i = 0
for row in categories:
if row.lower() == feed_category.lower():
category.set_active(i)
break
i += 1
self.window.set_response_sensitive(_RESPONSE_PREV, True)
def update_details_page():
iface = iface_cache.get_interface(model.canonical_iface_uri(uri.get_text()))
about.set_text('%s - %s' % (iface.get_name(), iface.summary))
icon_path = iface_cache.get_icon_path(iface)
from zeroinstall.gtkui import icon
icon_pixbuf = icon.load_icon(icon_path)
if icon_pixbuf:
icon_widget.set_from_pixbuf(icon_pixbuf)
feed_category = None
for meta in iface.get_metadata(XMLNS_IFACE, 'category'):
feed_category = meta.content
break
if feed_category:
i = 0
for row in category.get_model():
if row[0].lower() == feed_category.lower():
category.set_active(i)
break
i += 1
self.window.set_response_sensitive(_RESPONSE_PREV, True)
