chrome/browser/content_settings/content_settings_pref_provider.h - Issue 670953006: Componentize HostContentSettingsMap and content settings providers.

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Issue 670953006: Componentize HostContentSettingsMap and content settings providers. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: win64 suppress warnings Created 6 years, 1 month ago

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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

5 #ifndef CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_PREF_PROVIDER_H_

6 #define CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_PREF_PROVIDER_H_

7

8 // A content settings provider that takes its settings out of the pref service.

9

10 #include <vector>

11

12 #include "base/basictypes.h"

13 #include "base/prefs/pref_change_registrar.h"

14 #include "base/synchronization/lock.h"

15 #include "chrome/browser/content_settings/content_settings_utils.h"

16 #include "components/content_settings/core/browser/content_settings_observable_p rovider.h"

17 #include "components/content_settings/core/browser/content_settings_origin_ident ifier_value_map.h"

18

19 class PrefService;

20

21 namespace base {

22 class Clock;

23 class DictionaryValue;

24 }

25

26 namespace user_prefs {

27 class PrefRegistrySyncable;

28 }

29

30 namespace content_settings {

31

32 // Content settings provider that provides content settings from the user

33 // preference.

34 class PrefProvider : public ObservableProvider {

35 public:

36 static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);

37

38 PrefProvider(PrefService* prefs, bool incognito);

39 ~PrefProvider() override;

40

41 // ProviderInterface implementations.

42 RuleIterator* GetRuleIterator(ContentSettingsType content_type,

43 const ResourceIdentifier& resource_identifier,

44 bool incognito) const override;

45

46 bool SetWebsiteSetting(const ContentSettingsPattern& primary_pattern,

47 const ContentSettingsPattern& secondary_pattern,

48 ContentSettingsType content_type,

49 const ResourceIdentifier& resource_identifier,

50 base::Value* value) override;

51

52 void ClearAllContentSettingsRules(ContentSettingsType content_type) override;

53

54 void ShutdownOnUIThread() override;

55

56 // Records the last time the given pattern has used a certain content setting.

57 void UpdateLastUsage(const ContentSettingsPattern& primary_pattern,

58 const ContentSettingsPattern& secondary_pattern,

59 ContentSettingsType content_type);

60

61 base::Time GetLastUsage(const ContentSettingsPattern& primary_pattern,

62 const ContentSettingsPattern& secondary_pattern,

63 ContentSettingsType content_type);

64

65 // Gains ownership of \|clock\|.

66 void SetClockForTesting(scoped_ptr<base::Clock> clock);

67

68 private:

69 friend class DeadlockCheckerThread; // For testing.

70 // Reads all content settings exceptions from the preference and load them

71 // into the \|value_map_\|. The \|value_map_\| is cleared first if \|overwrite\| is

72 // true.

73 void ReadContentSettingsFromPref(bool overwrite);

74

75 // Callback for changes in the pref with the same name.

76 void OnContentSettingsPatternPairsChanged();

77

78 // Update the preference that stores content settings exceptions and syncs the

79 // value to the obsolete preference. When calling this function, \|lock_\|

80 // should not be held, since this function will send out notifications of

81 // preference changes.

82 void UpdatePref(

83 const ContentSettingsPattern& primary_pattern,

84 const ContentSettingsPattern& secondary_pattern,

85 ContentSettingsType content_type,

86 const ResourceIdentifier& resource_identifier,

87 const base::Value* value);

88

89 // Migrate the old media setting into new mic/camera content settings.

90 void MigrateObsoleteMediaContentSetting();

91

92 static void CanonicalizeContentSettingsExceptions(

93 base::DictionaryValue* all_settings_dictionary);

94

95 // In the debug mode, asserts that \|lock_\| is not held by this thread. It's

96 // ok if some other thread holds \|lock_\|, as long as it will eventually

97 // release it.

98 void AssertLockNotHeld() const;

99

100 // Weak; owned by the Profile and reset in ShutdownOnUIThread.

101 PrefService* prefs_;

102

103 // Can be set for testing.

104 scoped_ptr<base::Clock> clock_;

105

106 bool is_incognito_;

107

108 PrefChangeRegistrar pref_change_registrar_;

109

110 // Whether we are currently updating preferences, this is used to ignore

111 // notifications from the preferences service that we triggered ourself.

112 bool updating_preferences_;

113

114 OriginIdentifierValueMap value_map_;

115

116 OriginIdentifierValueMap incognito_value_map_;

117

118 // Used around accesses to the value map objects to guarantee thread safety.

119 mutable base::Lock lock_;

120

121 DISALLOW_COPY_AND_ASSIGN(PrefProvider);

122 };

123

124 } // namespace content_settings

125

126 #endif // CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_PREF_PROVIDER_H_

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