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.
5 """Common helper module for working with Chrome's processes and windows."""
13 def GetProcessIDAndPathPairs():
14 """Returns a list of 2-tuples of (process id, process path).
16 process_id_and_path_pairs = []
17 for process in psutil.process_iter():
19 process_id_and_path_pairs.append((process.pid, process.exe))
21 # It's normal that some processes are not accessible.
23 return process_id_and_path_pairs
26 def GetProcessIDs(process_path):
27 """Returns a list of IDs of processes whose path is |process_path|.
30 process_path: The path to the process.
33 A list of process IDs.
35 return [pid for (pid, path) in GetProcessIDAndPathPairs() if
39 def GetWindowHandles(process_ids):
40 """Returns a list of handles of windows owned by processes in |process_ids|.
43 process_ids: A list of process IDs.
46 A list of handles of windows owned by processes in |process_ids|.
49 def EnumerateWindowCallback(hwnd, _):
50 _, found_process_id = win32process.GetWindowThreadProcessId(hwnd)
51 if found_process_id in process_ids and win32gui.IsWindowVisible(hwnd):
53 # Enumerate all the top-level windows and call the callback with the hwnd as
54 # the first parameter.
55 win32gui.EnumWindows(EnumerateWindowCallback, None)
59 def WindowExists(process_ids, class_pattern):
60 """Returns whether there exists a window with the specified criteria.
62 This method returns whether there exists a window that is owned by a process
63 in |process_ids| and has a class name that matches |class_pattern|.
66 process_ids: A list of process IDs.
67 class_pattern: The regular expression pattern of the window class name.
70 A boolean indicating whether such window exists.
72 for hwnd in GetWindowHandles(process_ids):
73 if re.match(class_pattern, win32gui.GetClassName(hwnd)):