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1 # Copyright (c) 2012 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 import json | |
5 import logging | |
6 | |
7 from telemetry import util | |
8 | |
9 class InspectorPage(object): | |
10 def __init__(self, inspector_backend): | |
11 self._inspector_backend = inspector_backend | |
12 self._inspector_backend.RegisterDomain( | |
13 'Page', | |
14 self._OnNotification, | |
15 self._OnClose) | |
16 self._navigation_pending = False | |
17 | |
18 def _OnNotification(self, msg): | |
19 logging.debug('Notification: %s', json.dumps(msg, indent=2)) | |
20 if msg['method'] == 'Page.frameNavigated' and self._navigation_pending: | |
21 url = msg['params']['frame']['url'] | |
22 if not url == 'chrome://newtab/' and not url == 'about:blank': | |
23 # Marks the navigation as complete and unblocks the | |
24 # PerformActionAndWaitForNavigate call. | |
25 self._navigation_pending = False | |
26 | |
27 def _OnClose(self): | |
28 pass | |
29 | |
30 def PerformActionAndWaitForNavigate(self, action_function, timeout=60): | |
31 """Executes action_function, and waits for the navigation to complete. | |
32 | |
33 action_function is expect to result in a navigation. This function returns | |
34 when the navigation is complete or when the timeout has been exceeded. | |
35 """ | |
36 | |
37 # Turn on notifications. We need them to get the Page.frameNavigated event. | |
38 request = { | |
39 'method': 'Page.enable' | |
40 } | |
41 res = self._inspector_backend.SyncRequest(request, timeout) | |
42 assert len(res['result'].keys()) == 0 | |
43 | |
44 def DisablePageNotifications(): | |
45 request = { | |
46 'method': 'Page.disable' | |
47 } | |
48 res = self._inspector_backend.SyncRequest(request, timeout) | |
49 assert len(res['result'].keys()) == 0 | |
50 | |
51 self._navigation_pending = True | |
52 try: | |
53 action_function() | |
54 except: | |
55 DisablePageNotifications() | |
56 raise | |
57 | |
58 def IsNavigationDone(time_left): | |
59 self._inspector_backend.DispatchNotifications(time_left) | |
60 return not self._navigation_pending | |
61 util.WaitFor(IsNavigationDone, timeout, pass_time_left_to_func=True) | |
62 | |
63 DisablePageNotifications() | |
64 | |
65 def Navigate(self, url, timeout=60): | |
66 """Navigates to url""" | |
67 | |
68 def DoNavigate(): | |
69 # Navigate the page. However, there seems to be a bug in chrome devtools | |
70 # protocol where the request id for this event gets held on the browser | |
71 # side pretty much indefinitely. | |
72 # | |
73 # So, instead of waiting for the event to actually complete, wait for the | |
74 # Page.frameNavigated event. | |
75 request = { | |
76 'method': 'Page.navigate', | |
77 'params': { | |
78 'url': url, | |
79 } | |
80 } | |
81 self._inspector_backend.SendAndIgnoreResponse(request) | |
82 | |
83 self.PerformActionAndWaitForNavigate(DoNavigate, timeout) | |
84 | |
85 def GetCookieByName(self, name, timeout=60): | |
86 """Returns the value of the cookie by the given |name|.""" | |
87 request = { | |
88 'method': 'Page.getCookies' | |
89 } | |
90 res = self._inspector_backend.SyncRequest(request, timeout) | |
91 cookies = res['result']['cookies'] | |
92 for cookie in cookies: | |
93 if cookie['name'] == name: | |
94 return cookie['value'] | |
95 return None | |
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