chrome/browser/component_updater/update_checker.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 CHROME_BROWSER_COMPONENT_UPDATER_UPDATE_CHECKER_H_
   6 #define CHROME_BROWSER_COMPONENT_UPDATER_UPDATE_CHECKER_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/basictypes.h"
  12 #include "base/callback.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "chrome/browser/component_updater/update_response.h"
  15
  16 class GURL;
  17
  18 namespace net {
  19 class URLRequestContextGetter;
  20 }
  21
  22 namespace component_updater {
  23
  24 struct CrxUpdateItem;
  25
  26 class UpdateChecker {
  27  public:
  28   typedef base::Callback<void(int error,
  29                               const std::string& error_message,
  30                               const UpdateResponse::Results& results)>
  31       UpdateCheckCallback;
  32
  33   virtual ~UpdateChecker() {}
  34
  35   // Initiates an update check for the |items_to_check|. |additional_attributes|
  36   // provides a way to customize the <request> element. This value is inserted
  37   // as-is, therefore it must be well-formed as an XML attribute string.
  38   virtual bool CheckForUpdates(
  39       const std::vector<CrxUpdateItem*>& items_to_check,
  40       const std::string& additional_attributes) = 0;
  41
  42   static scoped_ptr<UpdateChecker> Create(
  43       const GURL& url,
  44       net::URLRequestContextGetter* url_request_context_getter,
  45       const UpdateCheckCallback& update_check_callback);
  46
  47  protected:
  48   UpdateChecker() {}
  49
  50  private:
  51   DISALLOW_COPY_AND_ASSIGN(UpdateChecker);
  52 };
  53
  54 }  // namespace component_updater
  55
  56 #endif  // CHROME_BROWSER_COMPONENT_UPDATER_UPDATE_CHECKER_H_