chrome/browser/content_settings/content_settings_supervised_provider.h

   1 // Copyright (c) 2015 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_SUPERVISED_PROVIDER_H_
   6 #define CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_SUPERVISED_PROVIDER_H_
   7
   8 // A content setting provider that is set by the custodian of a supervised user.
   9
  10 #include "base/callback_list.h"
  11 #include "base/synchronization/lock.h"
  12 #include "chrome/browser/profiles/profile.h"
  13 #include "components/content_settings/core/browser/content_settings_binary_value_map.h"
  14 #include "components/content_settings/core/browser/content_settings_observable_provider.h"
  15 #include "content/public/browser/notification_observer.h"
  16 #include "content/public/browser/notification_registrar.h"
  17
  18 class PrefService;
  19 class SupervisedUserSettingsService;
  20
  21 namespace content_settings {
  22
  23 // SupervisedProvider that provides content-settings managed by the custodian
  24 // of a supervised user.
  25 class SupervisedProvider : public ObservableProvider,
  26                            public content::NotificationObserver {
  27  public:
  28   explicit SupervisedProvider(
  29       SupervisedUserSettingsService* supervised_user_settings_service);
  30   ~SupervisedProvider() override;
  31
  32   // ProviderInterface implementations.
  33   RuleIterator* GetRuleIterator(ContentSettingsType content_type,
  34                                 const ResourceIdentifier& resource_identifier,
  35                                 bool incognito) const override;
  36
  37   bool SetWebsiteSetting(const ContentSettingsPattern& primary_pattern,
  38                          const ContentSettingsPattern& secondary_pattern,
  39                          ContentSettingsType content_type,
  40                          const ResourceIdentifier& resource_identifier,
  41                          base::Value* value) override;
  42
  43   void ClearAllContentSettingsRules(ContentSettingsType content_type) override;
  44
  45   void ShutdownOnUIThread() override;
  46
  47   // Callback on receiving settings from the supervised user settings service.
  48   void OnSupervisedSettingsAvailable(const base::DictionaryValue* settings);
  49
  50   // NotificationObserver implementation.
  51   void Observe(int type,
  52                const content::NotificationSource& src,
  53                const content::NotificationDetails& details) override;
  54
  55  private:
  56   BinaryValueMap value_map_;
  57
  58   // Used around accesses to the |value_map_| object to guarantee
  59   // thread safety.
  60   mutable base::Lock lock_;
  61
  62   scoped_ptr<base::CallbackList<void(
  63       const base::DictionaryValue*)>::Subscription> user_settings_subscription_;
  64   // This is a pointer instead of a member so we can make sure it is destroyed
  65   // on the UI thread.
  66   scoped_ptr<content::NotificationRegistrar> unsubscriber_registrar_;
  67
  68   DISALLOW_COPY_AND_ASSIGN(SupervisedProvider);
  69 };
  70
  71 }  // namespace content_settings
  72
  73 #endif  // CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_SUPERVISED_PROVIDER_H_