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 """Launches Chrome. 6 7 This script launches Chrome and waits until its window shows up. 8 """ 9 10 import optparse 11 import sys 12 import time 13 import win32process 14 15 import chrome_helper 16 17 18 def WaitForWindow(process_id, class_pattern): 19 """Waits until a window specified by |process_id| and class name shows up. 20 21 Args: 22 process_id: The ID of the process that owns the window. 23 class_pattern: The regular expression pattern of the window class name. 24 25 Returns: 26 A boolean value indicating whether the specified window shows up within 27 30 seconds. 28 """ 29 start_time = time.time() 30 while time.time() - start_time < 30: 31 if chrome_helper.WindowExists([process_id], class_pattern): 32 return True 33 time.sleep(0.1) 34 return False 35 36 37 def main(): 38 usage = 'usage: %prog chrome_path' 39 parser = optparse.OptionParser(usage, description='Launch Chrome.') 40 _, args = parser.parse_args() 41 if len(args) != 1: 42 parser.error('Incorrect number of arguments.') 43 chrome_path = args[0] 44 45 # Use CreateProcess rather than subprocess.Popen to avoid side effects such as 46 # handle interitance. 47 _, _, process_id, _ = win32process.CreateProcess(None, chrome_path, None, 48 None, 0, 0, None, None, 49 win32process.STARTUPINFO()) 50 if not WaitForWindow(process_id, 'Chrome_WidgetWin_'): 51 raise Exception('Could not launch Chrome.') 52 return 0 53 54 55 if __name__ == '__main__': 56 sys.exit(main()) 57
