sugar-toolkit-gtk3/shell/view/home/MeshGroup.py

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import random
import goocanvas
import conf
from sugar.canvas.IconItem import IconItem
from sugar.canvas.IconItem import IconColor
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from sugar.presence import PresenceService
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from view.home.IconLayout import IconLayout
class ActivityItem(IconItem):
def __init__(self, activity, service):
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self._service = service
self._activity = activity
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IconItem.__init__(self, icon_name=self.get_icon_name(),
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color=self.get_color(), size=112)
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def get_id(self):
return self._activity.get_id()
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def get_icon_name(self):
registry = conf.get_activity_registry()
info = registry.get_activity_from_type(self._service.get_type())
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return info.get_icon()
def get_color(self):
return IconColor(self._activity.get_color())
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def get_service(self):
return self._service
class MeshGroup(goocanvas.Group):
def __init__(self, shell):
goocanvas.Group.__init__(self)
self._shell = shell
self._icon_layout = IconLayout(1200, 900)
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self._activities = {}
self._pservice = PresenceService.get_instance()
self._pservice.connect("service-appeared", self._service_appeared_cb)
self._pservice.connect('activity-disappeared', self._activity_disappeared_cb)
for service in self._pservice.get_services():
self._check_service(service)
def _service_appeared_cb(self, pservice, service):
self._check_service(service)
def _check_service(self, service):
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registry = conf.get_activity_registry()
if registry.get_activity_from_type(service.get_type()) != None:
activity_id = service.get_activity_id()
if not self.has_activity(activity_id):
activity = self._pservice.get_activity(activity_id)
if activity != None:
self.add_activity(activity, service)
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def has_activity(self, activity_id):
return self._activities.has_key(activity_id)
def add_activity(self, activity, service):
item = ActivityItem(activity, service)
item.connect('clicked', self._activity_clicked_cb)
self._icon_layout.add_icon(item)
self.add_child(item)
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self._activities[item.get_id()] = item
def _activity_disappeared_cb(self, pservice, activity):
if self._activities.has_key(activity.get_id()):
self.remove_child(self._activities[activity.get_id()])
del self._activities[activity.get_id()]
def _activity_clicked_cb(self, item):
default_type = item.get_service().get_type()
registry = conf.get_activity_registry()
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bundle_id = registry.get_activity_from_type(default_type).get_id()
activity_id = item.get_id()
self._shell.join_activity(bundle_id, activity_id)