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_ptr.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "chrome/browser/chromeos/boot_times_loader.h"
  13 #include "chrome/browser/chromeos/settings/cros_settings.h"
  14 #include "chrome/browser/chromeos/version_loader.h"
  15 #include "components/policy/core/common/cloud/cloud_policy_store.h"
  16
  17 namespace chromeos {
  18
  19 class CrosSettings;
  20
  21 // Fetches all info we want to show on OOBE/Login screens about system
  22 // version, boot times and cloud policy.
  23 class VersionInfoUpdater : public policy::CloudPolicyStore::Observer {
  24  public:
  25   class Delegate {
  26    public:
  27     virtual ~Delegate() {}
  28
  29     // Called when OS version label should be updated.
  30     virtual void OnOSVersionLabelTextUpdated(
  31         const std::string& os_version_label_text) = 0;
  32
  33     // Called when the enterprise info notice should be updated.
  34     virtual void OnEnterpriseInfoUpdated(
  35         const std::string& enterprise_info) = 0;
  36   };
  37
  38   explicit VersionInfoUpdater(Delegate* delegate);
  39   virtual ~VersionInfoUpdater();
  40
  41   // Sets delegate.
  42   void set_delegate(Delegate* delegate) { delegate_ = delegate; }
  43
  44   // Starts fetching version info. The delegate will be notified when update
  45   // is received.
  46   void StartUpdate(bool is_official_build);
  47
  48  private:
  49   // policy::CloudPolicyStore::Observer interface:
  50   virtual void OnStoreLoaded(policy::CloudPolicyStore* store) OVERRIDE;
  51   virtual void OnStoreError(policy::CloudPolicyStore* store) OVERRIDE;
  52
  53   // Update the version label.
  54   void UpdateVersionLabel();
  55
  56   // Check and update enterprise domain.
  57   void UpdateEnterpriseInfo();
  58
  59   // Set enterprise domain name.
  60   void SetEnterpriseInfo(const std::string& domain_name);
  61
  62   // Callback from chromeos::VersionLoader giving the version.
  63   void OnVersion(const std::string& version);
  64
  65   // Handles asynchronously loading the version.
  66   VersionLoader version_loader_;
  67   // Handles asynchronously loading the boot times.
  68   BootTimesLoader boot_times_loader_;
  69   // Used to request version and boot times.
  70   CancelableTaskTracker tracker_;
  71
  72   // Information pieces for version label.
  73   std::string version_text_;
  74
  75   // Full text for the OS version label.
  76   std::string os_version_label_text_;
  77
  78   ScopedVector<CrosSettings::ObserverSubscription> subscriptions_;
  79
  80   chromeos::CrosSettings* cros_settings_;
  81
  82   Delegate* delegate_;
  83
  84   // Weak pointer factory so we can give our callbacks for invocation
  85   // at a later time without worrying that they will actually try to
  86   // happen after the lifetime of this object.
  87   base::WeakPtrFactory<VersionInfoUpdater> weak_pointer_factory_;
  88
  89   DISALLOW_COPY_AND_ASSIGN(VersionInfoUpdater);
  90 };
  91
  92 }  // namespace chromeos
  93
  94 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_VERSION_INFO_UPDATER_H_