sugar-toolkit-gtk3/activities/browser/BrowserActivity.py

import gtk
import geckoembed

from sugar.activity.Activity import Activity
from sugar.presence.PresenceService import PresenceService
from sugar.p2p.model.LocalModel import LocalModel
from sugar.p2p.model.RemoteModel import RemoteModel

from NotificationBar import NotificationBar
from NavigationToolbar import NavigationToolbar

class BrowserActivity(Activity):
	def __init__(self):
		Activity.__init__(self)

		self._share_service = None
		self._model_service = None
		self._notif_service = None
		self._model = None

		self.set_title("Web Page")

		vbox = gtk.VBox()

		self._notif_bar = NotificationBar()
		vbox.pack_start(self._notif_bar, False)
		self._notif_bar.connect('action', self.__notif_bar_action_cb)

		self.embed = geckoembed.Browser()
		self.embed.connect("title", self.__title_cb)
		vbox.pack_start(self.embed)		
		self.embed.show()
		
		nav_toolbar = NavigationToolbar(self)
		vbox.pack_start(nav_toolbar, False)
		nav_toolbar.show()

		self.add(vbox)
		vbox.show()

	def join(self, activity_ps):
		Activity.join(self, activity_ps)

		activity_ps.connect('service-appeared', self._service_appeared_cb)

		default_type = self.get_default_type()
		services = activity_ps.get_services_of_type(default_type)
		if len(services) > 0:
			self._notif_service = services[0]

		services = activity_ps.get_services_of_type(LocalModel.SERVICE_TYPE)
		if len(services) > 0:
			self._model_service = services[0]

		if self._notif_service and self._model_service:
			self._listen_to_model()
	
	def _service_appeared_cb(self, pservice, service):
		if service.get_type() == self._default_type:
			self._notif_service = service
		elif service.get_type() == LocalModel.SERVICE_TYPE:
			self._model_service = service
		
		if not self._model and self._notif_service and self._model_service:
			self._listen_to_model()

	def _listen_to_model(self):
		self._model = RemoteModel(self._model_service, self._notif_service)
		self._model.add_listener(self.__shared_location_changed_cb)
		self._go_to_shared_location()
	
	def _update_shared_location(self):
		address = self.embed.get_address()
		self._model.set_value('address', address)
		title = self.embed.get_title()
		self._model.set_value('title', title)
		
	def __notif_bar_action_cb(self, bar, action_id):
		if action_id == 'set_shared_location':
			self._update_shared_location()
		elif action_id == 'goto_shared_location':
			self._go_to_shared_location()

	def _go_to_shared_location(self):
		address = self._model.get_value("address")
		self.embed.load_address(address)
		self._notif_bar.hide()

	def get_embed(self):
		return self.embed
	
	def share(self):
		Activity.share(self)

		self._model = LocalModel(self, self._pservice, self._service)
		self._model.set_value('owner', self._pservice.get_owner().get_name())
		self._update_shared_location()
		
		self._notif_bar.set_text('Share this page with the group.')
		self._notif_bar.set_action('set_shared_location', 'Share')
		self._notif_bar.set_icon('stock_shared-by-me')
		self._notif_bar.show()

	def __title_cb(self, embed):
		self.set_title(embed.get_title())

	def __shared_location_changed_cb(self, model, key):
		self._notify_shared_location_change()

	def _notify_shared_location_change(self):
		owner = self._model.get_value('owner')
		title = self._model.get_value('title')
		
		text = '<b>' + owner + '</b> is reading <i>' + title + '</i>'
		self._notif_bar.set_text(text)
		self._notif_bar.set_action('goto_shared_location', 'Go There')
		self._notif_bar.set_icon('stock_right')
		self._notif_bar.show()