athena/content/public/app_registry.h

   1 // Copyright 2014 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 ATHENA_CONTENT_PUBLIC_APP_REGISTRY_H_
   6 #define ATHENA_CONTENT_PUBLIC_APP_REGISTRY_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "athena/athena_export.h"
  12 #include "base/macros.h"
  13 #include "base/memory/scoped_ptr.h"
  14
  15 namespace content {
  16 class BrowserContext;
  17 }
  18
  19 namespace athena {
  20
  21 class AppActivityRegistry;
  22 class AppRegistryImpl;
  23
  24 // This class holds for each application, held by a user, a list of activities.
  25 // The list of activities can be retrieved as |AppActivityRegistry|. It is used
  26 // to associate activities with applications and allow the resource manager to
  27 // (re)start and stop applications.
  28 class ATHENA_EXPORT AppRegistry {
  29  public:
  30   // Creates the AppRegistry instance.
  31   static void Create();
  32
  33   // Gets the instance of the controller.
  34   static AppRegistry* Get();
  35
  36   // Shuts down the registry (all applications should be shut down by then).
  37   static void ShutDown();
  38
  39   // Returns an |AppActivityRegistry| for a given activity |app_id| and
  40   // |browser_context|.
  41   virtual AppActivityRegistry* GetAppActivityRegistry(
  42       const std::string& app_id,
  43       content::BrowserContext* browser_context) = 0;
  44
  45   // Returns the number of registered applications.
  46   virtual int NumberOfApplications() const = 0;
  47
  48  protected:
  49   // Only the |AppActivityRegistry| can remove itself.
  50   friend AppActivityRegistry;
  51
  52   // Removes an activity registry for an application from the list of known
  53   // applications.
  54   virtual void RemoveAppActivityRegistry(AppActivityRegistry* registry) = 0;
  55
  56   // Constructor and destructor can only be called by the implementing class.
  57   AppRegistry();
  58   virtual ~AppRegistry();
  59 };
  60
  61 }  // namespace athena
  62
  63 #endif  // ATHENA_CONTENT_PUBLIC_APP_REGISTRY_H_