chrome/browser/chromeos/login/version_info_updater.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_CHROMEOS_LOGIN_VERSION_INFO_UPDATER_H_
   6 #define CHROME_BROWSER_CHROMEOS_LOGIN_VERSION_INFO_UPDATER_H_
   7
   8 #include <string>
   9
  10 #include "base/memory/scoped_vector.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "chrome/browser/chromeos/settings/cros_settings.h"
  13 #include "chromeos/system/version_loader.h"
  14 #include "components/policy/core/common/cloud/cloud_policy_store.h"
  15
  16 namespace chromeos {
  17
  18 class CrosSettings;
  19
  20 // Fetches all info we want to show on OOBE/Login screens about system
  21 // version, boot times and cloud policy.
  22 class VersionInfoUpdater : public policy::CloudPolicyStore::Observer {
  23  public:
  24   class Delegate {
  25    public:
  26     virtual ~Delegate() {}
  27
  28     // Called when OS version label should be updated.
  29     virtual void OnOSVersionLabelTextUpdated(
  30         const std::string& os_version_label_text) = 0;
  31
  32     // Called when the enterprise info notice should be updated.
  33     virtual void OnEnterpriseInfoUpdated(const std::string& enterprise_info,
  34                                          const std::string& asset_id) = 0;
  35   };
  36
  37   explicit VersionInfoUpdater(Delegate* delegate);
  38   ~VersionInfoUpdater() override;
  39
  40   // Sets delegate.
  41   void set_delegate(Delegate* delegate) { delegate_ = delegate; }
  42
  43   // Starts fetching version info. The delegate will be notified when update
  44   // is received.
  45   void StartUpdate(bool is_official_build);
  46
  47  private:
  48   // policy::CloudPolicyStore::Observer interface:
  49   void OnStoreLoaded(policy::CloudPolicyStore* store) override;
  50   void OnStoreError(policy::CloudPolicyStore* store) override;
  51
  52   // Update the version label.
  53   void UpdateVersionLabel();
  54
  55   // Check and update enterprise domain.
  56   void UpdateEnterpriseInfo();
  57
  58   // Set enterprise domain name and device asset ID.
  59   void SetEnterpriseInfo(const std::string& domain_name,
  60                          const std::string& asset_id);
  61
  62   // Creates a serial number string.
  63   void UpdateSerialNumberInfo();
  64
  65   // Callback from chromeos::VersionLoader giving the version.
  66   void OnVersion(const std::string& version);
  67
  68   // Information pieces for version label.
  69   std::string version_text_;
  70   std::string serial_number_text_;
  71
  72   // Full text for the OS version label.
  73   std::string os_version_label_text_;
  74
  75   ScopedVector<CrosSettings::ObserverSubscription> subscriptions_;
  76
  77   chromeos::CrosSettings* cros_settings_;
  78
  79   Delegate* delegate_;
  80
  81   // Weak pointer factory so we can give our callbacks for invocation
  82   // at a later time without worrying that they will actually try to
  83   // happen after the lifetime of this object.
  84   base::WeakPtrFactory<VersionInfoUpdater> weak_pointer_factory_;
  85
  86   DISALLOW_COPY_AND_ASSIGN(VersionInfoUpdater);
  87 };
  88
  89 }  // namespace chromeos
  90
  91 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_VERSION_INFO_UPDATER_H_