sdk/platform-tools/systrace/catapult/telemetry/telemetry/internal/backends/chrome/misc_web_contents_backend.py

   1 # Copyright 2013 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4
   5 from telemetry.core import exceptions
   6 from telemetry.internal.backends.chrome import oobe
   7 from telemetry.internal.backends.chrome_inspector import inspector_backend_list
   8
   9
  10 class MiscWebContentsBackend(inspector_backend_list.InspectorBackendList):
  11   """A dynamic sequence of web contents not related to tabs and extensions.
  12
  13   Provides acccess to chrome://oobe/login page.
  14   """
  15
  16   def __init__(self, browser_backend):
  17     super(MiscWebContentsBackend, self).__init__(browser_backend)
  18
  19   @property
  20   def oobe_exists(self):
  21     """Lightweight property to determine if the oobe webui is visible."""
  22     try:
  23       return bool(len(self))
  24     except exceptions.Error:
  25       return False
  26
  27   def GetOobe(self):
  28     if not len(self):
  29       return None
  30     return self[0]
  31
  32   def ShouldIncludeContext(self, context):
  33     return context.get('url').startswith('chrome://oobe')
  34
  35   def CreateWrapper(self, inspector_backend):
  36     return oobe.Oobe(inspector_backend)