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# Copyright (C) 2009 Canonical
#
# Authors:
# Michael Vogt
#
# 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; version 3.
#
# 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.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
from gi.repository import Gtk, GObject
import logging
from gettext import gettext as _
from softwarecenter.backend import get_install_backend
from softwarecenter.enums import ViewPages
from softwarecenter.backend.channel import (get_channels_manager,
AllInstalledChannel,
AllAvailableChannel)
from softwarecenter.ui.gtk3.widgets.buttons import (SectionSelector,
ChannelSelector)
from softwarecenter.ui.gtk3.em import StockEms
from softwarecenter.ui.gtk3.widgets.symbolic_icons import (
SymbolicIcon, PendingSymbolicIcon)
LOG = logging.getLogger(__name__)
_last_button = None
class ViewSwitcher(Gtk.Box):
ICON_SIZE = Gtk.IconSize.LARGE_TOOLBAR
def __init__(self, view_manager, datadir, db, cache, icons):
# boring stuff
self.view_manager = view_manager
def on_view_changed(widget, view_id):
self.view_buttons[view_id].set_active(True)
self.view_manager.connect('view-changed', on_view_changed)
self.channel_manager = get_channels_manager(db)
# backend sig handlers ...
self.backend = get_install_backend()
self.backend.connect("transactions-changed",
self.on_transaction_changed)
self.backend.connect("transaction-finished",
self.on_transaction_finished)
self.backend.connect("channels-changed",
self.on_channels_changed)
# widgetry
Gtk.Box.__init__(self)
self.set_orientation(Gtk.Orientation.HORIZONTAL)
# Gui stuff
self.view_buttons = {}
self.selectors = {}
self._prev_view = None # track the previous active section
self._prev_item = None # track the previous active menu-item
self._handlers = []
# order is important here!
# first, the availablepane items
icon = SymbolicIcon("available")
self.append_section_with_channel_sel(
ViewPages.AVAILABLE,
_("All Software"),
icon,
self.on_get_available_channels)
# the installedpane items
icon = SymbolicIcon("installed")
self.append_section_with_channel_sel(
ViewPages.INSTALLED,
_("Installed"),
icon,
self.on_get_installed_channels)
# the historypane item
icon = SymbolicIcon("history")
self.append_section(ViewPages.HISTORY, _("History"), icon)
# the pendingpane
icon = PendingSymbolicIcon("pending")
self.append_section(ViewPages.PENDING, _("Progress"), icon)
# set sensible atk name
atk_desc = self.get_accessible()
atk_desc.set_name(_("Software sources"))
def on_transaction_changed(self, backend, total_transactions):
LOG.debug("on_transactions_changed '%s'" % total_transactions)
pending = len(total_transactions)
self.notify_icon_of_pending_count(pending)
if pending > 0:
self.start_icon_animation()
pending_btn = self.view_buttons[ViewPages.PENDING]
if not pending_btn.get_visible():
pending_btn.set_visible(True)
else:
self.stop_icon_animation()
pending_btn = self.view_buttons[ViewPages.PENDING]
from softwarecenter.ui.gtk3.session.viewmanager import (
get_viewmanager,
)
vm = get_viewmanager()
if vm.get_active_view() == 'view-page-pending':
vm.nav_back()
vm.clear_forward_history()
pending_btn.set_visible(False)
def start_icon_animation(self):
self.view_buttons[ViewPages.PENDING].image.start()
def stop_icon_animation(self):
self.view_buttons[ViewPages.PENDING].image.stop()
def notify_icon_of_pending_count(self, count):
image = self.view_buttons[ViewPages.PENDING].image
image.set_transaction_count(count)
def on_transaction_finished(self, backend, result):
if result.success:
self.on_channels_changed()
def on_section_sel_clicked(self, button, event, view_id):
# mvo: this check causes bug LP: #828675
#if self._prev_view is view_id:
# return True
vm = self.view_manager
def config_view():
# set active pane
pane = vm.set_active_view(view_id)
# configure DisplayState
state = pane.state.copy()
if view_id == ViewPages.INSTALLED:
state.channel = AllInstalledChannel()
else:
state.channel = AllAvailableChannel()
# decide which page we want to display
if hasattr(pane, "Pages"):
page = pane.Pages.HOME
else:
page = None
# request page change
vm.display_page(pane, page, state)
return False
self._prev_view = view_id
GObject.idle_add(config_view)
def on_get_available_channels(self, popup):
return self.build_channel_list(popup, ViewPages.AVAILABLE)
def on_get_installed_channels(self, popup):
return self.build_channel_list(popup, ViewPages.INSTALLED)
def on_channels_changed(self, backend=None, res=None):
for view_id, sel in self.selectors.items():
# setting popup to None will cause a rebuild of the popup
# menu the next time the selector is clicked
sel.popup = None
def append_section(self, view_id, label, icon):
btn = SectionSelector(label, icon, self.ICON_SIZE)
self.view_buttons[view_id] = btn
self.pack_start(btn, False, False, 0)
global _last_button
if _last_button is not None:
btn.join_group(_last_button)
_last_button = btn
# this must go last otherwise as the buttons are added
# to the group, toggled & clicked gets emitted... causing
# all panes to fully initialise on USC startup, which is
# undesirable!
btn.connect("button-release-event", self.on_section_sel_clicked,
view_id)
return btn
def append_channel_selector(self, section_btn, view_id, build_func):
sel = ChannelSelector(section_btn)
self.selectors[view_id] = sel
sel.set_build_func(build_func)
self.pack_start(sel, False, False, 0)
return sel
def append_section_with_channel_sel(self, view_id, label, icon,
build_func):
btn = self.append_section(view_id, label, icon)
btn.draw_hint_has_channel_selector = True
sel = self.append_channel_selector(btn, view_id, build_func)
return btn, sel
def build_channel_list(self, popup, view_id):
# clean up old signal handlers
for sig in self._handlers:
GObject.source_remove(sig)
if view_id == ViewPages.AVAILABLE:
channels = self.channel_manager.channels
elif view_id == ViewPages.INSTALLED:
channels = self.channel_manager.channels_installed_only
else:
channels = self.channel_manager.channels
for i, channel in enumerate(channels):
# only calling it with a explicit new() makes it a really
# empty one, otherwise the following error is raised:
# """Attempting to add a widget with type GtkBox to a
# GtkCheckMenuItem, but as a GtkBin subclass a
# GtkCheckMenuItem can only contain one widget at a time;
# it already contains a widget of type GtkAccelLabel """
item = Gtk.MenuItem.new()
label = Gtk.Label.new(channel.display_name)
image = Gtk.Image.new_from_icon_name(channel.icon,
Gtk.IconSize.MENU)
box = Gtk.Box.new(Gtk.Orientation.HORIZONTAL, StockEms.SMALL)
box.pack_start(image, False, False, 0)
box.pack_start(label, False, False, 0)
item.add(box)
item.show_all()
self._handlers.append(
item.connect(
"button-release-event",
self.on_channel_selected,
channel,
view_id
)
)
popup.attach(item, 0, 1, i, i + 1)
def on_channel_selected(self, item, event, channel, view_id):
vm = self.view_manager
def config_view():
# set active pane
pane = vm.set_active_view(view_id)
# configure DisplayState
state = pane.state.copy()
state.category = None
state.subcategory = None
state.channel = channel
# decide which page we want to display
if hasattr(pane, "Pages"):
if channel.origin == "all":
page = pane.Pages.HOME
else:
page = pane.Pages.LIST
else:
page = None
# request page change
vm.display_page(pane, page, state)
return False
GObject.idle_add(config_view)
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