chrome/browser/ui/webui/help/version_updater_mac.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_UI_WEBUI_HELP_VERSION_UPDATER_MAC_H_
   6 #define CHROME_BROWSER_UI_WEBUI_HELP_VERSION_UPDATER_MAC_H_
   7
   8 #import <AppKit/AppKit.h>
   9
  10 #include "base/compiler_specific.h"
  11 #include "base/mac/scoped_nsobject.h"
  12 #include "chrome/browser/ui/webui/help/version_updater.h"
  13
  14 @class KeystoneObserver;
  15
  16 // OS X implementation of version update functionality, used by the WebUI
  17 // About/Help page.
  18 class VersionUpdaterMac : public VersionUpdater {
  19  public:
  20   // VersionUpdater implementation.
  21   void CheckForUpdate(const StatusCallback& status_callback,
  22                       const PromoteCallback& promote_callback) override;
  23   void PromoteUpdater() const override;
  24   void RelaunchBrowser() const override;
  25
  26   // Process status updates received from Keystone. The dictionary will contain
  27   // an AutoupdateStatus value as an intValue at key kAutoupdateStatusStatus. If
  28   // a version is available (see AutoupdateStatus), it will be present at key
  29   // kAutoupdateStatusVersion.
  30   void UpdateStatus(NSDictionary* status);
  31
  32  protected:
  33   friend class VersionUpdater;
  34
  35   // Clients must use VersionUpdater::Create().
  36   VersionUpdaterMac();
  37   ~VersionUpdaterMac() override;
  38
  39  private:
  40   // Update the visibility state of promote button.
  41   void UpdateShowPromoteButton();
  42
  43   // Callback used to communicate update status to the client.
  44   StatusCallback status_callback_;
  45
  46   // Callback used to show or hide the promote UI elements.
  47   PromoteCallback promote_callback_;
  48
  49   // The visible state of the promote button.
  50   bool show_promote_button_;
  51
  52   // The observer that will receive keystone status updates.
  53   base::scoped_nsobject<KeystoneObserver> keystone_observer_;
  54
  55   DISALLOW_COPY_AND_ASSIGN(VersionUpdaterMac);
  56 };
  57
  58 #endif  // CHROME_BROWSER_UI_WEBUI_HELP_VERSION_UPDATER_MAC_H_
  59