Fetch OEM services customization manifest from URL async....

chrome/browser/chromeos/login/apply_services_customization.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_CHROMEOS_LOGIN_STRING_FETCHER_H_
-#define CHROME_BROWSER_CHROMEOS_LOGIN_STRING_FETCHER_H_
+#ifndef CHROME_BROWSER_CHROMEOS_LOGIN_APPLY_SERVICES_CUSTOMIZATION_H_
+#define CHROME_BROWSER_CHROMEOS_LOGIN_APPLY_SERVICES_CUSTOMIZATION_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/scoped_ptr.h"
+#include "base/timer.h"
 #include "chrome/common/net/url_fetcher.h"
+#include "googleurl/src/gurl.h"
 
-// This class is used to fetch an URL and store result as a string.
-class StringFetcher : public URLFetcher::Delegate {
+class PrefService;
+
+namespace chromeos {
+
+// This class fetches services customization document and apply it
+// as soon as the document is downloaded.
+class ApplyServicesCustomization : public URLFetcher::Delegate {
  public:
-  // Initiates URL fetch.
-  explicit StringFetcher(const std::string& url);
+  // This method checks if service customization has been applied and if not
+  // starts the process.
+  static void StartIfNeeded();
 
-  const std::string& result() const { return result_; }
-  int response_code() const { return response_code_; }
-  bool succeeded() const { return response_code_ == 200; }
+  // Registers preferences.
+  static void RegisterPrefs(PrefService* local_state);
+
+  // Returns true if service customization has been applied.
+  static bool IsApplied();
 
  private:
+  explicit ApplyServicesCustomization(const std::string& url_str);
+
+  // Initiate URL fetch, return true if the object will delete itself later.
+  bool Init();
+
+  // Initiate file fetching.
+  void StartFileFetch();
+
   // Overriden from URLFetcher::Delegate:
   virtual void OnURLFetchComplete(const URLFetcher* source,
                                   const GURL& url,
                                   const URLRequestStatus& status,
                                   int response_code,
                                   const ResponseCookies& cookies,
                                   const std::string& data);
-  // Timer notification handler.
-  void OnTimeoutElapsed();
+
+  // Applies given |manifest|.
+  void Apply(const std::string& manifest);
+
+  // Remember in local state status of kServicesCustomizationAppliedPref.
+  static void SetApplied(bool val);
+
+  // Services customization manifest URL.
+  GURL url_;
 
   // URLFetcher instance.
   scoped_ptr<URLFetcher> url_fetcher_;
 
-  // Fetch result.
-  std::string result_;
+  // Timer to retry fetching file if network is not available.
+  base::OneShotTimer<ApplyServicesCustomization> retry_timer_;
 
-  // Received HTTP response code.
-  int response_code_;
+  // How many times we already tried to fetch customization manifest file.
+  int num_retries_;
 
-  DISALLOW_COPY_AND_ASSIGN(StringFetcher);
+  DISALLOW_COPY_AND_ASSIGN(ApplyServicesCustomization);
 };
 
-#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_STRING_FETCHER_H_
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_APPLY_SERVICES_CUSTOMIZATION_H_