twblue/src/accessible_output2/outputs/auto.py

from __future__ import absolute_import
import accessible_output2
from .base import Output, OutputError

class Auto(Output):

 def __init__(self):
  output_classes = accessible_output2.get_output_classes()
  self.outputs = []
  for output in output_classes:
   try:
    a=output()
    self.outputs.append(a)
   except:
    pass

 def get_first_available_output(self):
  for output in self.outputs:
   if output.is_active():
    return output
  return None

 def speak(self, *args, **kwargs):
  output = self.get_first_available_output()
  if output:
   output.speak(*args, **kwargs)

 def braille(self, *args, **kwargs):
  output = self.get_first_available_output()
  if output:
   output.braille(*args, **kwargs)

 def output(self, *args, **kwargs):
  output = self.get_first_available_output()
  if output:
   output.speak(*args, **kwargs)

 def is_system_output(self):
  output = self.get_first_available_output()
  if output:
   return output.is_system_output()