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

import os
import logging

import gtk
import gtkmozembed
import gobject

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
import _sugar

from NotificationBar import NotificationBar
from NavigationToolbar import NavigationToolbar
from sugar import env

class PopupCreator(gobject.GObject):
	__gsignals__ = {
		'popup-created':  (gobject.SIGNAL_RUN_FIRST,
						   gobject.TYPE_NONE, ([])),
	}

	def __init__(self, parent_window):
		gobject.GObject.__init__(self)

		logging.debug('Creating the popup widget')

		self._sized_popup = False
		self._parent_window = parent_window

		self._dialog = gtk.Window()
		self._dialog.set_resizable(True)

		self._dialog.realize()
		self._dialog.window.set_type_hint(gtk.gdk.WINDOW_TYPE_HINT_DIALOG)

		self._embed = Browser()
		self._size_to_sid = self._embed.connect('size_to', self._size_to_cb)
		self._vis_sid = self._embed.connect('visibility', self._visibility_cb)

		self._dialog.add(self._embed)

	def _size_to_cb(self, embed, width, height):
		logging.debug('Resize the popup to %d %d' % (width, height))
		self._sized_popup = True
		self._dialog.resize(width, height)

	def _visibility_cb(self, embed, visible):
		if visible:
			if self._sized_popup:
				logging.debug('Show the popup')
				self._embed.show()
				self._dialog.set_transient_for(self._parent_window)
				self._dialog.show()
			else:
				logging.debug('Open a new activity for the popup')
				self._dialog.remove(self._embed)

				activity = BrowserActivity(self._embed)
				activity.set_type('com.redhat.Sugar.BrowserActivity')

			self._embed.disconnect(self._size_to_sid)
			self._embed.disconnect(self._vis_sid)

			self.emit('popup-created')

	def get_embed(self):
		return self._embed

class Browser(_sugar.Browser):
	__gtype_name__ = "SugarWebBrowser"
	def __init__(self):
		_sugar.Browser.__init__(self)
		self._popup_creators = []

	def do_create_window(self):
		popup_creator = PopupCreator(self.get_toplevel())
		popup_creator.connect('popup-created', self._popup_created_cb)

		self._popup_creators.append(popup_creator)

		return popup_creator.get_embed()

	def _popup_created_cb(self, creator):
		self._popup_creators.remove(creator)

class BrowserActivity(Activity):
	def __init__(self, embed=None):
		Activity.__init__(self)

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

		self.set_title("Web Page")
		self.connect('destroy', self._destroy_cb)

		vbox = gtk.VBox()

		nav_toolbar = NavigationToolbar()
		vbox.pack_start(nav_toolbar, False)
		nav_toolbar.show()

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

		if not self._embed:
			self._embed = Browser()
		self._embed.connect("title", self.__title_cb)
		vbox.pack_start(self._embed)		
		self._embed.show()

		nav_toolbar.set_embed(self._embed)
		self._embed.load_url('http://www.google.com')		

		self.add(vbox)
		vbox.show()

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

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

		services = activity_ps.get_services_of_type(self._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_location()
		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_url(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()

	def _destroy_cb(self, window):
		if self._model:
			self._model.shutdown()

def start():
	gtkmozembed.set_profile_path(env.get_profile_path(), 'gecko')
	gtkmozembed.push_startup()
	_sugar.startup_browser()