chrome/browser/ui/ash/vpn_delegate_chromeos.h

   1 // Copyright 2015 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_UI_ASH_VPN_DELEGATE_CHROMEOS_H_
   6 #define CHROME_BROWSER_UI_ASH_VPN_DELEGATE_CHROMEOS_H_
   7
   8 #include <vector>
   9
  10 #include "ash/system/chromeos/network/vpn_delegate.h"
  11 #include "base/macros.h"
  12 #include "base/memory/weak_ptr.h"
  13 #include "content/public/browser/notification_observer.h"
  14 #include "content/public/browser/notification_registrar.h"
  15 #include "extensions/browser/extension_registry_observer.h"
  16
  17 namespace extensions {
  18 class ExtensionRegistry;
  19 }
  20
  21 // Chrome OS implementation of a delegate that provides UI code in ash with
  22 // access to the VPN providers enabled in the primary user's profile.
  23 class VPNDelegateChromeOS : public ash::VPNDelegate,
  24                             public extensions::ExtensionRegistryObserver,
  25                             public content::NotificationObserver {
  26  public:
  27   VPNDelegateChromeOS();
  28   ~VPNDelegateChromeOS() override;
  29
  30   // ash::VPNDelegate:
  31   bool HaveThirdPartyVPNProviders() const override;
  32   const std::vector<ash::VPNProvider>& GetVPNProviders() const override;
  33   void ShowAddPage(const ash::VPNProvider::Key& key) override;
  34
  35   // extensions::ExtensionRegistryObserver:
  36   void OnExtensionLoaded(content::BrowserContext* browser_context,
  37                          const extensions::Extension* extension) override;
  38   void OnExtensionUnloaded(
  39       content::BrowserContext* browser_context,
  40       const extensions::Extension* extension,
  41       extensions::UnloadedExtensionInfo::Reason reason) override;
  42   void OnShutdown(extensions::ExtensionRegistry* registry) override;
  43
  44   // content::NotificationObserver:
  45   void Observe(int type,
  46                const content::NotificationSource& source,
  47                const content::NotificationDetails& details) override;
  48
  49  private:
  50   // Retrieves the current list of VPN providers enabled in the primary user's
  51   // profile and notifies observers that it has changed. Must only be called
  52   // when a user is logged in and the primary user's extension registry is being
  53   // observed.
  54   void UpdateVPNProviders();
  55
  56   // Starts observing the primary user's extension registry to detect changes to
  57   // the list of VPN providers enabled in the user's profile and caches the
  58   // initial list. Must only be called when a user is logged in.
  59   void AttachToPrimaryUserExtensionRegistry();
  60
  61   // The primary user's extension registry, if a user is logged in.
  62   extensions::ExtensionRegistry* extension_registry_ = nullptr;
  63
  64   // A cache of the VPN providers enabled in the primary user's profile.
  65   std::vector<ash::VPNProvider> vpn_providers_;
  66
  67   content::NotificationRegistrar registrar_;
  68
  69   base::WeakPtrFactory<VPNDelegateChromeOS> weak_factory_;
  70
  71   DISALLOW_COPY_AND_ASSIGN(VPNDelegateChromeOS);
  72 };
  73
  74 #endif  // CHROME_BROWSER_UI_ASH_VPN_DELEGATE_CHROMEOS_H_