Upstream version 7.36.149.0
[platform/framework/web/crosswalk.git] / src / chrome / browser / extensions / api / settings_overrides / settings_overrides_api.h
1 // Copyright 2013 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_EXTENSIONS_API_SETTINGS_OVERRIDES_SETTINGS_OVERRIDES_API_H_
6 #define CHROME_BROWSER_EXTENSIONS_API_SETTINGS_OVERRIDES_SETTINGS_OVERRIDES_API_H_
7
8 #include <set>
9 #include <string>
10
11 #include "base/scoped_observer.h"
12 #include "chrome/browser/search_engines/template_url_service.h"
13 #include "extensions/browser/browser_context_keyed_api_factory.h"
14 #include "extensions/browser/extension_registry_observer.h"
15
16 class TemplateURL;
17
18 namespace extensions {
19 class ExtensionRegistry;
20
21 class SettingsOverridesAPI : public BrowserContextKeyedAPI,
22                              public ExtensionRegistryObserver {
23  public:
24   explicit SettingsOverridesAPI(content::BrowserContext* context);
25   virtual ~SettingsOverridesAPI();
26
27   // BrowserContextKeyedAPI implementation.
28   static BrowserContextKeyedAPIFactory<SettingsOverridesAPI>*
29       GetFactoryInstance();
30
31  private:
32   friend class BrowserContextKeyedAPIFactory<SettingsOverridesAPI>;
33
34   typedef std::set<scoped_refptr<const Extension> > PendingExtensions;
35
36   // Wrappers around PreferenceAPI.
37   void SetPref(const std::string& extension_id,
38                const std::string& pref_key,
39                base::Value* value);
40   void UnsetPref(const std::string& extension_id,
41                  const std::string& pref_key);
42
43   // ExtensionRegistryObserver implementation.
44   virtual void OnExtensionLoaded(content::BrowserContext* browser_context,
45                                  const Extension* extension) OVERRIDE;
46   virtual void OnExtensionUnloaded(
47       content::BrowserContext* browser_context,
48       const Extension* extension,
49       UnloadedExtensionInfo::Reason reason) OVERRIDE;
50
51   // KeyedService implementation.
52   virtual void Shutdown() OVERRIDE;
53
54   void OnTemplateURLsLoaded();
55
56   void RegisterSearchProvider(const Extension* extension) const;
57   // BrowserContextKeyedAPI implementation.
58   static const char* service_name() { return "SettingsOverridesAPI"; }
59
60   Profile* profile_;
61   TemplateURLService* url_service_;
62
63   // List of extensions waiting for the TemplateURLService to Load to
64   // have search provider registered.
65   PendingExtensions pending_extensions_;
66
67   // Listen to extension load, unloaded notifications.
68   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
69       extension_registry_observer_;
70
71   scoped_ptr<TemplateURLService::Subscription> template_url_sub_;
72
73   DISALLOW_COPY_AND_ASSIGN(SettingsOverridesAPI);
74 };
75
76 template <>
77 void BrowserContextKeyedAPIFactory<
78     SettingsOverridesAPI>::DeclareFactoryDependencies();
79
80 }  // namespace extensions
81
82 #endif  // CHROME_BROWSER_EXTENSIONS_API_SETTINGS_OVERRIDES_SETTINGS_OVERRIDES_API_H_