1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
// Copyright (c) 2006-2008 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.
#include "chrome/browser/url_fetcher.h"
class PrefService;
// This object is responsible for updating the Google URL exactly once (when
// first constructed) and tracking the currently known value, which is also
// saved to a pref.
class GoogleURLTracker : public URLFetcher::Delegate {
public:
// Only the main browser process loop should call this, when setting up
// g_browser_process->google_url_tracker_. No code other than the
// GoogleURLTracker itself should actually use
// g_browser_process->google_url_tracker() (which shouldn't be hard, since
// there aren't useful public functions on this object for consumers to access
// anyway).
GoogleURLTracker();
// This returns the current Google URL. If this is the first call to it in
// this session, it also kicks off a timer to fetch the correct Google URL;
// when that fetch completes, it will fire NOTIFY_GOOGLE_URL_UPDATED.
//
// This is the only function most code should ever call.
//
// This will return a valid URL even in unittest mode.
static GURL GoogleURL();
static void RegisterPrefs(PrefService* prefs);
private:
FRIEND_TEST(GoogleURLTrackerTest, CheckAndConvertURL);
// Determines if |url| is an appropriate source for a new Google base URL, and
// update |base_url| to the appropriate base URL if so. Returns whether the
// check succeeded (and thus whether |base_url| was actually updated).
static bool CheckAndConvertToGoogleBaseURL(const GURL& url, GURL* base_url);
// Starts the fetch of the up-to-date Google URL.
void StartFetch();
// URLFetcher::Delegate
virtual void OnURLFetchComplete(const URLFetcher *source,
const GURL& url,
const URLRequestStatus& status,
int response_code,
const ResponseCookies& cookies,
const std::string& data);
static const char kDefaultGoogleHomepage[];
GURL google_url_;
ScopedRunnableMethodFactory<GoogleURLTracker> fetcher_factory_;
scoped_ptr<URLFetcher> fetcher_;
DISALLOW_EVIL_CONSTRUCTORS(GoogleURLTracker);
};
|
