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
61
62
63
64
65
|
// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_SEARCH_SEARCH_ENGINE_BASE_URL_TRACKER_H_
#define CHROME_BROWSER_SEARCH_SEARCH_ENGINE_BASE_URL_TRACKER_H_
#include <memory>
#include <optional>
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/scoped_observation.h"
#include "components/search_engines/template_url_data.h"
#include "components/search_engines/template_url_service.h"
#include "components/search_engines/template_url_service_observer.h"
#include "url/gurl.h"
class SearchTermsData;
// A helper class that watches for changes to the base URL of the default search
// engine. Typically this changes when a different DSE is selected. For Google,
// it can also change without changing the DSE, when the Google base URL is
// updated. This can happen in the case of country (i.e. TLD) changes.
class SearchEngineBaseURLTracker : public TemplateURLServiceObserver {
public:
enum class ChangeReason {
DEFAULT_SEARCH_PROVIDER,
GOOGLE_BASE_URL,
};
using BaseURLChangedCallback = base::RepeatingCallback<void(ChangeReason)>;
SearchEngineBaseURLTracker(
TemplateURLService* template_url_service,
std::unique_ptr<SearchTermsData> search_terms_data,
const BaseURLChangedCallback& base_url_changed_callback);
SearchEngineBaseURLTracker(const SearchEngineBaseURLTracker&) = delete;
SearchEngineBaseURLTracker& operator=(const SearchEngineBaseURLTracker&) =
delete;
~SearchEngineBaseURLTracker() override;
private:
// TemplateURLServiceObserver implementation.
void OnTemplateURLServiceChanged() override;
// Returns true if the base URL of the current search engine is Google.
bool HasGoogleBaseURL();
raw_ptr<TemplateURLService> template_url_service_;
std::unique_ptr<SearchTermsData> search_terms_data_;
BaseURLChangedCallback base_url_changed_callback_;
base::ScopedObservation<TemplateURLService, TemplateURLServiceObserver>
observation_{this};
// Used to check whether notifications from TemplateURLService indicate a
// change that affects the default search provider.
GURL previous_google_base_url_;
std::optional<TemplateURLData> previous_default_search_provider_data_;
};
#endif // CHROME_BROWSER_SEARCH_SEARCH_ENGINE_BASE_URL_TRACKER_H_
|
