from xml.sax import saxutils

import dbus
import pygtk
pygtk.require('2.0')
import gtk
import geckoembed

from sugar.shell import activity
from sugar.browser import NotificationBar
from sugar.browser import NavigationToolbar

class BrowserActivity(activity.Activity):
	SOLO = 1
	FOLLOWING = 2
	LEADING = 3

	def __init__(self, group, uri):
		activity.Activity.__init__(self)

		self.uri = uri
		self._group = group
		self._mode = BrowserActivity.SOLO

	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):
		print action_id
		if action_id == 'set_shared_location':
			self._update_shared_location()
		elif action_id == 'goto_shared_location':
			address = self._model.get_value("address")
			print address
			self.embed.load_address(address)
			self._notif_bar.hide()

	def set_mode(self, mode):
		self._mode = mode
		if mode == BrowserActivity.LEADING:
			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 _setup_shared(self, uri):
		self._model = self._group.get_store().get_model(uri)
		if self._model:
			self.set_mode(BrowserActivity.FOLLOWING)
			self._model.add_listener(self.__shared_location_changed_cb)
	
	def on_connected_to_shell(self):
		self.set_ellipsize_tab(True)
		self.set_can_close(True)
		self.set_tab_text("Web Page")
		self.set_tab_icon(name="web-browser")
		self.set_show_tab_icon(True)

		vbox = gtk.VBox()

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

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

		plug = self.gtk_plug()		
		plug.add(vbox)
		plug.show()

		vbox.show()
		
		self._setup_shared(self.uri)
	
	def get_embed(self):
		return self.embed
	
	def share(self):
		address = self.embed.get_address()
		self._model = self._group.get_store().create_model(address)
		self._model.set_value('owner', self._group.get_owner().get_nick_name())
		self._update_shared_location()
		self.set_mode(BrowserActivity.LEADING)
	
		bus = dbus.SessionBus()
		proxy_obj = bus.get_object('com.redhat.Sugar.Chat', '/com/redhat/Sugar/Chat')
		chat_shell = dbus.Interface(proxy_obj, 'com.redhat.Sugar.ChatShell')
		
		escaped_title = saxutils.escape(self.embed.get_title())
		escaped_address = saxutils.escape(address)
		chat_shell.send_text_message('<richtext><link href="' + escaped_address +
								'">' + escaped_title + '</link></richtext>')
	
	def __title_cb(self, embed):
		self.set_tab_text(embed.get_title())

	def __shared_location_changed_cb(self, model, key):
		self.set_has_changes(True)
		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()