sugar-toolkit-gtk3/shell/view/Shell.py

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# Copyright (C) 2006, Red Hat, Inc.
#
# 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
from sets import Set
import logging
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import gobject
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import wnck
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from view.home.HomeWindow import HomeWindow
from sugar.activity.activityhandle import ActivityHandle
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from sugar.graphics.popupcontext import PopupContext
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from view.ActivityHost import ActivityHost
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from sugar.activity import activityfactory, bundleregistry
from view.frame.frame import Frame
from view.keyhandler import KeyHandler
import sugar
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class Shell(gobject.GObject):
def __init__(self, model):
gobject.GObject.__init__(self)
self._activities_starting = Set()
self._model = model
self._hosts = {}
self._screen = wnck.screen_get_default()
self._current_host = None
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self._screen_rotation = 0
self._key_handler = KeyHandler(self)
self._popup_context = PopupContext()
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self._frame = Frame(self)
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self._frame.show()
self._home_window = HomeWindow(self)
self._home_window.show()
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self._zoom_level = sugar.ZOOM_HOME
home_model = self._model.get_home()
home_model.connect('activity-added', self._activity_added_cb)
home_model.connect('activity-removed', self._activity_removed_cb)
home_model.connect('active-activity-changed',
self._active_activity_changed_cb)
self.start_activity('org.laptop.JournalActivity')
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def _activity_added_cb(self, home_model, home_activity):
activity_host = ActivityHost(home_activity)
self._hosts[activity_host.get_xid()] = activity_host
if home_activity.get_type() in self._activities_starting:
self._activities_starting.remove(home_activity.get_type())
def _activity_removed_cb(self, home_model, home_activity):
if home_activity.get_type() in self._activities_starting:
self._activities_starting.remove(home_activity.get_type())
if not home_activity.get_launched():
return
xid = home_activity.get_xid()
if self._hosts.has_key(xid):
self._hosts[xid].destroy()
del self._hosts[xid]
def _active_activity_changed_cb(self, home_model, home_activity):
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if home_activity:
host = self._hosts[home_activity.get_xid()]
else:
host = None
if self._current_host:
self._current_host.set_active(False)
self._current_host = host
if self._current_host:
self._current_host.set_active(True)
self.set_zoom_level(sugar.ZOOM_ACTIVITY)
else:
self.set_zoom_level(sugar.ZOOM_HOME)
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def get_model(self):
return self._model
def get_frame(self):
return self._frame
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def get_popup_context(self):
return self._popup_context
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def _join_error_cb(self, handler, err, home_model):
logging.debug("Failed to join activity %s: %s" % (handler.get_activity_id(), err))
home_model.notify_activity_launch_failed(handler.get_activity_id())
def join_activity(self, bundle_id, activity_id):
activity = self.get_activity(activity_id)
if activity:
activity.present()
return
# Get the service name for this activity, if
# we have a bundle on the system capable of handling
# this activity type
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breg = bundleregistry.get_registry()
bundle = breg.get_bundle(bundle_id)
if not bundle:
logging.error("Couldn't find activity for type %s" % bundle_id)
return
home_model = self._model.get_home()
home_model.notify_activity_launch(activity_id, bundle_id)
handle = ActivityHandle(activity_id)
handle.pservice_id = activity_id
handler = activityfactory.create(bundle_id, handle)
handler.connect('error', self._join_error_cb, home_model)
def _start_error_cb(self, handler, err, home_model):
home_model.notify_activity_launch_failed(handler.get_activity_id())
def start_activity(self, activity_type):
if activity_type in self._activities_starting:
logging.debug("This activity is still launching.")
return
logging.debug('Trying to start activity of type %s' % activity_type)
self._activities_starting.add(activity_type)
try:
handler = activityfactory.create(activity_type)
home_model = self._model.get_home()
home_model.notify_activity_launch(handler.get_activity_id(),
activity_type)
handler.connect('error', self._start_error_cb, home_model)
except Exception, err:
logging.debug("Couldn't start activity of type %s: %s" % (activity_type, err))
self._activities_starting.remove(activity_type)
# Zoom to Home for launch feedback
self.set_zoom_level(sugar.ZOOM_HOME)
def set_zoom_level(self, level):
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if self._zoom_level == level:
return
if len(self._hosts) == 0 and level == sugar.ZOOM_ACTIVITY:
return
self._zoom_level = level
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if self._zoom_level == sugar.ZOOM_ACTIVITY:
self._screen.toggle_showing_desktop(False)
else:
self._screen.toggle_showing_desktop(True)
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self._home_window.set_zoom_level(self._zoom_level)
if self._zoom_level == sugar.ZOOM_HOME:
self._frame.show()
else:
self._frame.hide()
def get_current_activity(self):
return self._current_host
def get_activity(self, activity_id):
for host in self._hosts.values():
if host.get_id() == activity_id:
return host
return None
def toggle_chat_visibility(self):
act = self.get_current_activity()
if not act:
return
is_visible = self._frame.is_visible()
if act.is_chat_visible():
frame_was_visible = act.chat_hide()
if not frame_was_visible:
self._frame.do_slide_out()
else:
if not is_visible:
self._frame.do_slide_in()
act.chat_show(is_visible)