chrome/service/cloud_print/job_status_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_SERVICE_CLOUD_PRINT_JOB_STATUS_UPDATER_H_
   6 #define CHROME_SERVICE_CLOUD_PRINT_JOB_STATUS_UPDATER_H_
   7
   8 #include <string>
   9
  10 #include "base/compiler_specific.h"
  11 #include "base/memory/ref_counted.h"
  12 #include "base/threading/thread.h"
  13 #include "chrome/service/cloud_print/cloud_print_url_fetcher.h"
  14 #include "chrome/service/cloud_print/print_system.h"
  15 #include "net/url_request/url_request_status.h"
  16 #include "url/gurl.h"
  17
  18 namespace cloud_print {
  19
  20 // Periodically monitors the status of a local print job and updates the
  21 // cloud print server accordingly. When the job has been completed this
  22 // object releases the reference to itself which should cause it to
  23 // self-destruct.
  24 class JobStatusUpdater : public base::RefCountedThreadSafe<JobStatusUpdater>,
  25                          public CloudPrintURLFetcherDelegate {
  26  public:
  27   class Delegate {
  28    public:
  29     virtual bool OnJobCompleted(JobStatusUpdater* updater) = 0;
  30     virtual void OnAuthError() = 0;
  31
  32    protected:
  33     virtual ~Delegate() {}
  34   };
  35
  36   JobStatusUpdater(const std::string& printer_name,
  37                    const std::string& job_id,
  38                    PlatformJobId& local_job_id,
  39                    const GURL& cloud_print_server_url,
  40                    PrintSystem* print_system,
  41                    Delegate* delegate);
  42
  43   // Checks the status of the local print job and sends an update.
  44   void UpdateStatus();
  45   void Stop();
  46
  47   // CloudPrintURLFetcher::Delegate implementation.
  48   CloudPrintURLFetcher::ResponseAction HandleJSONData(
  49       const net::URLFetcher* source,
  50       const GURL& url,
  51       base::DictionaryValue* json_data,
  52       bool succeeded) override;
  53   CloudPrintURLFetcher::ResponseAction OnRequestAuthError() override;
  54   std::string GetAuthHeader() override;
  55
  56   base::Time start_time() const {
  57     return start_time_;
  58   }
  59
  60  private:
  61   friend class base::RefCountedThreadSafe<JobStatusUpdater>;
  62   ~JobStatusUpdater() override;
  63
  64   base::Time start_time_;
  65   std::string printer_name_;
  66   std::string job_id_;
  67   PlatformJobId local_job_id_;
  68   PrintJobDetails last_job_details_;
  69   scoped_refptr<CloudPrintURLFetcher> request_;
  70   GURL cloud_print_server_url_;
  71   scoped_refptr<PrintSystem> print_system_;
  72   Delegate* delegate_;
  73   // A flag that is set to true in Stop() and will ensure the next scheduled
  74   // task will do nothing.
  75   bool stopped_;
  76   DISALLOW_COPY_AND_ASSIGN(JobStatusUpdater);
  77 };
  78
  79 // This typedef is to workaround the issue with certain versions of
  80 // Visual Studio where it gets confused between multiple Delegate
  81 // classes and gives a C2500 error. (I saw this error on the try bots -
  82 // the workaround was not needed for my machine).
  83 typedef JobStatusUpdater::Delegate JobStatusUpdaterDelegate;
  84
  85 }  // namespace cloud_print
  86
  87 #endif  // CHROME_SERVICE_CLOUD_PRINT_JOB_STATUS_UPDATER_H_