from __future__ import absolute_import
import win32gui
from libloader.com import load_com
from .base import Output, OutputError
import pywintypes

class WindowEyes (Output):
 """Speech output supporting the WindowEyes screen reader"""

 name = 'Window-Eyes'

 def __init__(self, *args, **kwargs):
  super(WindowEyes, self).__init__(*args, **kwargs)
  try:
   self.object = load_com("gwspeak.speak")
  except pywintypes.com_error:
   raise OutputError

 def speak(self, text, interrupt=0):
  if interrupt:
   self.silence()
  self.object.SpeakString(text)

 def silence (self):
  self.object.Silence()

 def is_active(self):
  try:
   return win32gui.FindWindow("GWMExternalControl", "External Control") != 0
  except:
   return False

output_class = WindowEyes