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_INTERNAL_EXTENSION_PROVIDER_H_
6#define CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_INTERNAL_EXTENSION_PROVIDER_H_
7
8#include "base/memory/scoped_ptr.h"
9#include "base/synchronization/lock.h"
10#include "components/content_settings/core/browser/content_settings_observable_provider.h"
11#include "components/content_settings/core/browser/content_settings_origin_identifier_value_map.h"
12#include "components/content_settings/core/common/content_settings.h"
13#include "content/public/browser/notification_observer.h"
14#include "content/public/browser/notification_registrar.h"
15
16class ExtensionService;
17
18namespace extensions {
19class Extension;
20}
21
22namespace content_settings {
23
24// A content settings provider which disables certain plugins for platform apps.
25class InternalExtensionProvider : public ObservableProvider,
26                            public content::NotificationObserver {
27 public:
28  explicit InternalExtensionProvider(ExtensionService* extension_service);
29
30  virtual ~InternalExtensionProvider();
31
32  // ProviderInterface methods:
33  virtual RuleIterator* GetRuleIterator(
34      ContentSettingsType content_type,
35      const ResourceIdentifier& resource_identifier,
36      bool incognito) const OVERRIDE;
37
38  virtual bool SetWebsiteSetting(
39      const ContentSettingsPattern& primary_pattern,
40      const ContentSettingsPattern& secondary_pattern,
41      ContentSettingsType content_type,
42      const ResourceIdentifier& resource_identifier,
43      base::Value* value) OVERRIDE;
44
45  virtual void ClearAllContentSettingsRules(ContentSettingsType content_type)
46      OVERRIDE;
47
48  virtual void ShutdownOnUIThread() OVERRIDE;
49
50  // content::NotificationObserver implementation.
51  virtual void Observe(int type,
52                       const content::NotificationSource& source,
53                       const content::NotificationDetails& details) OVERRIDE;
54 private:
55  void SetContentSettingForExtension(const extensions::Extension* extension,
56                                     ContentSetting setting);
57  void SetContentSettingForExtensionAndResource(
58      const extensions::Extension* extension,
59      const ResourceIdentifier& resource,
60      ContentSetting setting);
61
62  OriginIdentifierValueMap value_map_;
63
64  // Used around accesses to the |value_map_| list to guarantee thread safety.
65  mutable base::Lock lock_;
66  scoped_ptr<content::NotificationRegistrar> registrar_;
67
68  DISALLOW_COPY_AND_ASSIGN(InternalExtensionProvider);
69};
70
71}  // namespace content_settings
72
73#endif  // CHROME_BROWSER_CONTENT_SETTINGS_CONTENT_SETTINGS_INTERNAL_EXTENSION_PROVIDER_H_
74