chrome/browser/content_settings/content_settings_policy_provider.h

   1 // Copyright (c) 2011 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_POLICY_PROVIDER_H_
   6 #define CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_POLICY_PROVIDER_H_
   7
   8 // A content settings provider that takes its settings out of policies.
   9
  10 #include <vector>
  11
  12 #include "base/basictypes.h"
  13 #include "base/prefs/public/pref_change_registrar.h"
  14 #include "base/synchronization/lock.h"
  15 #include "chrome/browser/content_settings/content_settings_observable_provider.h"
  16 #include "chrome/browser/content_settings/content_settings_origin_identifier_value_map.h"
  17
  18 class PrefService;
  19
  20 namespace content_settings {
  21
  22 // PolicyProvider that provides managed content-settings.
  23 class PolicyProvider : public ObservableProvider {
  24  public:
  25   explicit PolicyProvider(PrefService* prefs);
  26   virtual ~PolicyProvider();
  27   static void RegisterUserPrefs(PrefService* prefs);
  28
  29   // ProviderInterface implementations.
  30   virtual RuleIterator* GetRuleIterator(
  31       ContentSettingsType content_type,
  32       const ResourceIdentifier& resource_identifier,
  33       bool incognito) const OVERRIDE;
  34
  35   virtual bool SetWebsiteSetting(
  36       const ContentSettingsPattern& primary_pattern,
  37       const ContentSettingsPattern& secondary_pattern,
  38       ContentSettingsType content_type,
  39       const ResourceIdentifier& resource_identifier,
  40       Value* value) OVERRIDE;
  41
  42   virtual void ClearAllContentSettingsRules(
  43       ContentSettingsType content_type) OVERRIDE;
  44
  45   virtual void ShutdownOnUIThread() OVERRIDE;
  46
  47  private:
  48   // Reads the policy managed default settings.
  49   void ReadManagedDefaultSettings();
  50
  51   // Callback for preference changes.
  52   void OnPreferenceChanged(const std::string& pref_name);
  53
  54   // Reads the policy controlled default settings for a specific content type.
  55   void UpdateManagedDefaultSetting(ContentSettingsType content_type);
  56
  57   void ReadManagedContentSettings(bool overwrite);
  58
  59   void GetContentSettingsFromPreferences(OriginIdentifierValueMap* rules);
  60
  61   void GetAutoSelectCertificateSettingsFromPreferences(
  62       OriginIdentifierValueMap* value_map);
  63
  64   void ReadManagedContentSettingsTypes(ContentSettingsType content_type);
  65
  66   OriginIdentifierValueMap value_map_;
  67
  68   PrefService* prefs_;
  69
  70   PrefChangeRegistrar pref_change_registrar_;
  71
  72   // Used around accesses to the |value_map_| object to guarantee
  73   // thread safety.
  74   mutable base::Lock lock_;
  75
  76   DISALLOW_COPY_AND_ASSIGN(PolicyProvider);
  77 };
  78
  79 }  // namespace content_settings
  80
  81 #endif  // CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_POLICY_PROVIDER_H_