chrome/browser/extensions/extension_action_manager.h

   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_EXTENSIONS_EXTENSION_ACTION_MANAGER_H_
   6 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_ACTION_MANAGER_H_
   7
   8 #include <map>
   9 #include <string>
  10
  11 #include "base/memory/linked_ptr.h"
  12 #include "components/browser_context_keyed_service/browser_context_keyed_service.h"
  13 #include "content/public/browser/notification_observer.h"
  14 #include "content/public/browser/notification_registrar.h"
  15
  16 class ExtensionAction;
  17 class Profile;
  18
  19 namespace extensions {
  20
  21 class Extension;
  22
  23 // Owns the ExtensionActions associated with each extension.  These actions live
  24 // while an extension is loaded and are destroyed on unload.
  25 class ExtensionActionManager : public BrowserContextKeyedService,
  26                                public content::NotificationObserver {
  27  public:
  28   explicit ExtensionActionManager(Profile* profile);
  29   virtual ~ExtensionActionManager();
  30
  31   // Returns this profile's ExtensionActionManager.  One instance is
  32   // shared between a profile and its incognito version.
  33   static ExtensionActionManager* Get(Profile* profile);
  34
  35   // Retrieves the page action, or browser action for |extension|.
  36   // If the result is not NULL, it remains valid until the extension is
  37   // unloaded.
  38   ExtensionAction* GetPageAction(const extensions::Extension& extension) const;
  39   ExtensionAction* GetBrowserAction(
  40       const extensions::Extension& extension) const;
  41   ExtensionAction* GetSystemIndicator(
  42       const extensions::Extension& extension) const;
  43
  44  private:
  45   // Implement content::NotificationObserver.
  46   virtual void Observe(int type,
  47                        const content::NotificationSource& source,
  48                        const content::NotificationDetails& details) OVERRIDE;
  49
  50   content::NotificationRegistrar registrar_;
  51   Profile* profile_;
  52
  53   // Keyed by Extension ID.  These maps are populated lazily when their
  54   // ExtensionAction is first requested, and the entries are removed when the
  55   // extension is unloaded.  Not every extension has a page action or browser
  56   // action.
  57   typedef std::map<std::string, linked_ptr<ExtensionAction> > ExtIdToActionMap;
  58   mutable ExtIdToActionMap page_actions_;
  59   mutable ExtIdToActionMap browser_actions_;
  60   mutable ExtIdToActionMap system_indicators_;
  61 };
  62
  63 }  // namespace extensions
  64
  65 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_ACTION_MANAGER_H_