update-manager 1:0.156.14 / usr / share / pyshared / UpdateManager / GtkProgress.py

# GtkProgress.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

from gi.repository import Gtk, Gdk
import apt
import apt_pkg
from gettext import gettext as _
from Core.utils import humanize_size

# intervals of the start up progress
# 3x caching and menu creation
STEPS_UPDATE_CACHE = [33, 66, 100]
#STEPS_UPDATE_CACHE = [25, 50, 75, 100]

class GtkOpProgressInline(apt.progress.base.OpProgress):
    def __init__(self, progressbar, parent,                  
                 steps=STEPS_UPDATE_CACHE):
        # steps
        self.all_steps = steps
        self._init_steps()
        # the progressbar to use
        self._progressbar = progressbar
        self._parent = parent
        self._window = None
    def _init_steps(self):
        self.steps = self.all_steps[:]
        self.base = 0
        self.old = 0
        self.next = int(self.steps.pop(0))
    def update(self, percent):
        # ui
        self._progressbar.show()
        self._parent.set_sensitive(False)
        # if the old percent was higher, a new progress was started
        if self.old > percent:
            # set the borders to the next interval
            self.base = self.next
            try:
                self.next = int(self.steps.pop(0))
            except:
                pass
        progress = self.base + percent/100 * (self.next - self.base)
        self.old = percent
        if abs(percent-self._progressbar.get_fraction()*100.0) > 0.5:
            self._progressbar.set_text("%s" % self.op)
            self._progressbar.set_fraction(progress/100.0)
        while Gtk.events_pending():
            Gtk.main_iteration()
    def done(self):
        """ one sub-step is done """
        pass
    def all_done(self):
        """ all steps are completed (called by the parent) """
        self._parent.set_sensitive(True)
        self._progressbar.hide()
        self._init_steps()

class GtkOpProgressWindow(apt.OpProgress):
    def __init__(self, host_window, progressbar, status, parent,
                 steps=STEPS_UPDATE_CACHE):
        # used for the "one run progressbar"
        self.steps = steps[:]
        self.base = 0
        self.old = 0
        self.next = int(self.steps.pop(0))

        self._parent = parent
        self._window = host_window
        self._status = status
        self._progressbar = progressbar
        # Do not show the close button 
        self._window.realize()
        self._window.set_title("")
        host_window.get_window().set_functions(Gdk.WMFunction.MOVE)
        self._window.set_transient_for(parent)

    def update(self, percent):
        #print percent
        #print self.Op
        #print self.SubOp
        # only show progress bar if the parent is not iconified (#353195)
        state = self._parent.window.get_state()
        if not (state  & Gdk.WINDOW_STATE_ICONIFIED):
            self._window.show()
        self._parent.set_sensitive(False)
        # if the old percent was higher, a new progress was started
        if self.old > percent:
            # set the borders to the next interval
            self.base = self.next
            try:
                self.next = int(self.steps.pop(0))
            except:
                pass
        progress = self.base + percent/100 * (self.next - self.base)
        self.old = percent
        if abs(percent-self._progressbar.get_fraction()*100.0) > 0.1:
            self._status.set_markup("<i>%s</i>" % self.op)
            self._progressbar.set_fraction(progress/100.0)
        while Gtk.events_pending():
            Gtk.main_iteration()

    def done(self):
        self._parent.set_sensitive(True)
    def hide(self):
        self._window.hide()

class GtkFetchProgress(apt.progress.FetchProgress):
    def __init__(self, parent, summary="", descr=""):
        # if this is set to false the download will cancel
        self._continue = True
        # init vars here
        # FIXME: find a more elegant way, this sucks
        self.summary = parent.label_fetch_summary
        self.status = parent.label_fetch_status
        # we need to connect the signal manual here, it won't work
        # from the main window auto-connect
        parent.button_fetch_cancel.connect(
            "clicked", self.on_button_fetch_cancel_clicked)
        self.progress = parent.progressbar_fetch
        self.window_fetch = parent.window_fetch
        self.window_fetch.set_transient_for(parent.window_main)
        self.window_fetch.realize()
        self.window_fetch.get_window().set_functions(Gdk.WMFunction.MOVE)
        # set summary
        if summary != "":
            self.summary.set_markup("<big><b>%s</b></big> \n\n%s" %
                                    (summary, descr))
    def start(self):
        self.progress.set_fraction(0)
        self.window_fetch.show()
    def stop(self):
        self.window_fetch.hide()
    def on_button_fetch_cancel_clicked(self, widget):
        self._continue = False
    def pulse(self):
        apt.progress.FetchProgress.pulse(self)
        currentItem = self.currentItems + 1
        if currentItem > self.totalItems:
          currentItem = self.totalItems
        if self.currentCPS > 0:
            statusText = (_("Downloading file %(current)li of %(total)li with "
                            "%(speed)s/s") % {"current" : currentItem,
                                              "total" : self.totalItems,
                                              "speed" : humanize_size(self.currentCPS)})
        else:
            statusText = (_("Downloading file %(current)li of %(total)li") % \
                          {"current" : currentItem,
                           "total" : self.totalItems })
            self.progress.set_fraction(self.percent/100.0)
        self.status.set_markup("<i>%s</i>" % statusText)
        # TRANSLATORS: show the remaining time in a progress bar:
        #self.progress.set_text(_("About %s left" % (apt_pkg.TimeToStr(self.eta))))
	# FIXME: show remaining time
        self.progress.set_text("")

        while Gtk.events_pending():
            Gtk.main_iteration()
        return self._continue

if __name__ == "__main__":
    import apt
    from SimpleGtkbuilderApp import SimpleGtkbuilderApp

    class MockParent(SimpleGtkbuilderApp):
        """Mock parent for the fetcher that just loads the UI file"""
        def __init__(self):
            SimpleGtkbuilderApp.__init__(self, "../data/gtkbuilder/UpdateManager.ui", "update-manager")

    # create mock parent and fetcher
    parent = MockParent()
    fetch_progress = GtkFetchProgress(parent, "summary", "long detailed description")
    #fetch_progress = GtkFetchProgress(parent)

    # download lists
    cache = apt.Cache()
    res = cache.update(fetch_progress)
    # generate a dist-upgrade (to feed data to the fetcher) and get it
    cache.upgrade()
    pm = apt_pkg.GetPackageManager(cache._depcache)
    fetcher = apt_pkg.GetAcquire(fetch_progress)
    res = cache._fetchArchives(fetcher, pm)
    print res