| // Copyright (c) 2012 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. |
| |
| #ifndef CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_PREF_PROVIDER_H_ |
| #define CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_PREF_PROVIDER_H_ |
| |
| // A content settings provider that takes its settings out of the pref service. |
| |
| #include <vector> |
| |
| #include "base/basictypes.h" |
| #include "base/prefs/pref_change_registrar.h" |
| #include "base/synchronization/lock.h" |
| #include "chrome/browser/content_settings/content_settings_observable_provider.h" |
| #include "chrome/browser/content_settings/content_settings_origin_identifier_value_map.h" |
| #include "chrome/browser/content_settings/content_settings_utils.h" |
| |
| class PrefService; |
| |
| namespace base { |
| class DictionaryValue; |
| } |
| |
| namespace user_prefs { |
| class PrefRegistrySyncable; |
| } |
| |
| namespace content_settings { |
| |
| // Content settings provider that provides content settings from the user |
| // preference. |
| class PrefProvider : public ObservableProvider { |
| public: |
| static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry); |
| |
| PrefProvider(PrefService* prefs, bool incognito); |
| virtual ~PrefProvider(); |
| |
| // ProviderInterface implementations. |
| virtual RuleIterator* GetRuleIterator( |
| ContentSettingsType content_type, |
| const ResourceIdentifier& resource_identifier, |
| bool incognito) const OVERRIDE; |
| |
| virtual bool SetWebsiteSetting( |
| const ContentSettingsPattern& primary_pattern, |
| const ContentSettingsPattern& secondary_pattern, |
| ContentSettingsType content_type, |
| const ResourceIdentifier& resource_identifier, |
| base::Value* value) OVERRIDE; |
| |
| virtual void ClearAllContentSettingsRules( |
| ContentSettingsType content_type) OVERRIDE; |
| |
| virtual void ShutdownOnUIThread() OVERRIDE; |
| |
| private: |
| friend class DeadlockCheckerThread; // For testing. |
| // Reads all content settings exceptions from the preference and load them |
| // into the |value_map_|. The |value_map_| is cleared first if |overwrite| is |
| // true. |
| void ReadContentSettingsFromPref(bool overwrite); |
| |
| // Callback for changes in the pref with the same name. |
| void OnContentSettingsPatternPairsChanged(); |
| |
| // Update the preference that stores content settings exceptions and syncs the |
| // value to the obsolete preference. When calling this function, |lock_| |
| // should not be held, since this function will send out notifications of |
| // preference changes. |
| void UpdatePref( |
| const ContentSettingsPattern& primary_pattern, |
| const ContentSettingsPattern& secondary_pattern, |
| ContentSettingsType content_type, |
| const ResourceIdentifier& resource_identifier, |
| const base::Value* value); |
| |
| // Migrate the old media setting into new mic/camera content settings. |
| void MigrateObsoleteMediaContentSetting(); |
| |
| static void CanonicalizeContentSettingsExceptions( |
| base::DictionaryValue* all_settings_dictionary); |
| |
| // In the debug mode, asserts that |lock_| is not held by this thread. It's |
| // ok if some other thread holds |lock_|, as long as it will eventually |
| // release it. |
| void AssertLockNotHeld() const; |
| |
| // Weak; owned by the Profile and reset in ShutdownOnUIThread. |
| PrefService* prefs_; |
| |
| bool is_incognito_; |
| |
| PrefChangeRegistrar pref_change_registrar_; |
| |
| // Whether we are currently updating preferences, this is used to ignore |
| // notifications from the preferences service that we triggered ourself. |
| bool updating_preferences_; |
| |
| OriginIdentifierValueMap value_map_; |
| |
| OriginIdentifierValueMap incognito_value_map_; |
| |
| // Used around accesses to the value map objects to guarantee thread safety. |
| mutable base::Lock lock_; |
| |
| DISALLOW_COPY_AND_ASSIGN(PrefProvider); |
| }; |
| |
| } // namespace content_settings |
| |
| #endif // CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_PREF_PROVIDER_H_ |