#!/usr/bin/python

import string

import gc
import dbus
import dbus.service
import dbus.glib
import gobject
import pygtk
pygtk.require('2.0')
import gtk,sys

################################################################################
# Code below will be moved to a module someday

class Activity(dbus.service.Object):

    def __init__(self):
	pass

    def name_owner_changed(self, service_name, old_service_name, new_service_name):
        #print "in name_owner_changed: svc=%s oldsvc=%s newsvc=%s"%(service_name, old_service_name, new_service_name)
	if service_name == "com.redhat.Sugar.Shell" and new_service_name == "":
	    self.activity_on_disconnected_from_shell()
	#elif service_name == "com.redhat.Sugar.Shell" and old_service_name == "":
	#    self.activity_on_shell_reappeared()

    def activity_connect_to_shell(self):
	self.__bus = dbus.SessionBus()

	self.__bus.add_signal_receiver(self.name_owner_changed, dbus_interface = "org.freedesktop.DBus", signal_name = "NameOwnerChanged")

	self.__activity_container_object = self.__bus.get_object("com.redhat.Sugar.Shell", \
							       "/com/redhat/Sugar/Shell/ActivityContainer")
	self.__activity_container = dbus.Interface(self.__activity_container_object, \
						   "com.redhat.Sugar.Shell.ActivityContainer")

	self.__activity_id = self.__activity_container.add_activity("")
	self.__object_path = "/com/redhat/Sugar/Shell/Activities/%d"%self.__activity_id

	print "object_path = %s"%self.__object_path

	self.__activity_object = dbus.Interface(self.__bus.get_object("com.redhat.Sugar.Shell", self.__object_path), \
					      "com.redhat.Sugar.Shell.ActivityHost")
	self.__window_id = self.__activity_object.get_host_xembed_id()

	print "XEMBED window_id = %d"%self.__window_id

	self.__plug = gtk.Plug(self.__window_id)

	# Now let the Activity register a peer service so the Shell can poke it
	self.__peer_service_name = "com.redhat.Sugar.Activity%d"%self.__activity_id
	self.__peer_object_name = "/com/redhat/Sugar/Activity/%d"%self.__activity_id
	self.__service = dbus.service.BusName(self.__peer_service_name, bus=self.__bus)
        dbus.service.Object.__init__(self, self.__service, self.__peer_object_name)

	self.__activity_object.set_peer_service_name(self.__peer_service_name, self.__peer_object_name)

	self.activity_on_connected_to_shell()

    def activity_get_gtk_plug(self):
	return self.__plug

    def activity_set_tab_text(self, text):
	self.__activity_object.set_tab_text(text)

    @dbus.service.method("com.redhat.Sugar.Activity", \
			 in_signature="", \
			 out_signature="")
    def lost_focus(self):
	self.activity_on_lost_focus()

    @dbus.service.method("com.redhat.Sugar.Activity", \
			 in_signature="", \
			 out_signature="")
    def got_focus(self):
	self.activity_on_got_focus()


    @dbus.service.method("com.redhat.Sugar.Activity", \
			 in_signature="", \
			 out_signature="")
    def close_from_user(self):
	self.activity_on_close_from_user()

    def activity_get_id(self):
	return self.__activity_id


    def __reply_cb(self):
	print "in __reply_cb"
	self.activity_on_disconnected_from_shell()

    def __error_cb(self, error):
	print "in __error_cb"

    def activity_shutdown(self):
	self.__activity_object.shutdown(reply_handler = self.__reply_cb, error_handler = self.__error_cb)

    # pure virtual methods

    def activity_on_connected_to_shell(self):
	print "act %d: you need to override activity_on_connected_to_shell"%self.activity_get_id()

    def activity_on_disconnected_from_shell(self):
	print "act %d: you need to override activity_on_disconnected_to_shell"%self.activity_get_id()

    def activity_on_close_from_user(self):
	print "act %d: you need to override activity_on_close_from_user"%self.activity_get_id()

    def activity_on_lost_focus(self):
	print "act %d: you need to override activity_on_lost_focus"%self.activity_get_id()

    def activity_on_got_focus(self):
	print "act %d: you need to override activity_on_got_focus"%self.activity_get_id()

def my_exit():
    sys.exit(0)

def deferred_exit():
    gobject.timeout_add(0, my_exit)

################################################################################

class ExampleActivity(Activity):

    def __init__(self, name):
	self.name = name

    def entry_changed(self, entry):
	self.activity_set_tab_text(entry.get_text())
    
    def activity_on_connected_to_shell(self):
	print "act %d: in activity_on_connected_to_shell"%self.activity_get_id()

	self.activity_set_tab_text(self.name)

	plug = self.activity_get_gtk_plug()
	self.entry = gtk.Entry()
	self.entry.set_text(self.name)
	self.entry.connect("changed", self.entry_changed)
	plug.add(self.entry)
	plug.show_all()

    def activity_on_disconnected_from_shell(self):
	print "act %d: in activity_on_disconnected_to_shell"%self.activity_get_id()
	print "act %d: Shell disappeared..."%self.activity_get_id()
	plug = self.activity_get_gtk_plug()		
	plug.destroy()

	del self

	gc.collect()

    def activity_on_close_from_user(self):
	print "act %d: in activity_on_close_from_user"%self.activity_get_id()
	self.activity_shutdown()

    def activity_on_lost_focus(self):
	print "act %d: in activity_on_lost_focus"%self.activity_get_id()

    def activity_on_got_focus(self):
	print "act %d: in activity_on_got_focus"%self.activity_get_id()

    def __del__(self):
	print "in __del__ for ExampleActivity"


if len(sys.argv) != 2:
    print "usage: example-activity.py <name_of_activity>"
    sys.exit(1)

gc.set_debug(gc.DEBUG_LEAK)

example_activity = ExampleActivity(sys.argv[1])
example_activity.activity_connect_to_shell()
example_activity = None

gtk.main()