[chromedriver] Implement commands: findChildElement, findChildElements.

chrome/test/chromedriver/chromedriver.py

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import ctypes
 import json
 
 class ChromeDriverException(Exception):
   pass
 class NoSuchElement(ChromeDriverException):
   pass
 class UnknownCommand(ChromeDriverException):
   pass
+class StaleElementReference(ChromeDriverException):
+  pass
 class UnknownError(ChromeDriverException):
   pass
 class XPathLookupError(ChromeDriverException):
   pass
 class InvalidSelector(ChromeDriverException):
   pass
 class SessionNotCreatedException(ChromeDriverException):
   pass
 class NoSuchSession(ChromeDriverException):
   pass
 
 def _ExceptionForResponse(response):
   exception_class_map = {
     7: NoSuchElement,
     9: UnknownCommand,
+    10: StaleElementReference,
     13: UnknownError,
     19: XPathLookupError,
     32: InvalidSelector,
     33: SessionNotCreatedException,
     100: NoSuchSession
   }
   status = response['status']
   msg = response['value']['message']
   return exception_class_map.get(status, ChromeDriverException)(msg)
 
@@ skipping 58 matching lines @@
     return self._ExecuteSessionCommand('getTitle')
 
   def FindElement(self, strategy, target):
     return self._ExecuteSessionCommand(
          'findElement', {'using': strategy, 'value': target})
 
   def FindElements(self, strategy, target):
     return self._ExecuteSessionCommand(
          'findElements', {'using': strategy, 'value': target})
 
+  def FindChildElement(self, root_element, strategy, target):

[kkania, 2013/01/15 22:24:36]

we should create a Element class that has these methods. see
http://code.google.com/searchframe#OAMlx_jo-ck/src/third_party/webdriver/pyli...

[chrisgao (Use stgao instead), 2013/01/16 19:06:24]

Done.

+    return self._ExecuteSessionCommand(
+         'findChildElement',
+         {'using': strategy, 'value': target, 'id' : root_element})
+
+  def FindChildElements(self, root_element, strategy, target):
+    return self._ExecuteSessionCommand(
+         'findChildElements',
+         {'using': strategy, 'value': target, 'id' : root_element})
+
   def SetTimeout(self, type, timeout):
     return self._ExecuteSessionCommand(
          'setTimeout', {'type' : type, 'ms': timeout})
 
   def Quit(self):
     """Quits the browser and ends the session."""
     self._ExecuteSessionCommand('quit')