import pyatspi
from collections import defaultdict

count = defaultdict(int)

def callback(event):
	global count
	if event is None:
		return
	if type(event) == pyatspi.event.DeviceEvent:
		return
	if event.host_application is None:
		return
	if event.host_application.name == "Minefield" or event.host_application.name == "Firefox" or event.host_application.name == "Thunderbird":
		#if event.type == "object:state-changed:focused":
		print event
		count[event.type] += 1

try:
	reg = pyatspi.Registry
	events = pyatspi.EVENT_TREE.keys()
	events = list(set([event.strip(':') for event in events]))
	reg.registerEventListener(callback, *events)
	reg.start()
except KeyboardInterrupt:
	for k in count.keys():
		print ("%s:%d") % (k,count[k])
	print "bye"