chrome/browser/download/download_service_impl.h

   1 // Copyright 2015 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_DOWNLOAD_DOWNLOAD_SERVICE_IMPL_H_
   6 #define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_SERVICE_IMPL_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/callback_forward.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "chrome/browser/download/download_service.h"
  12 #include "components/keyed_service/core/keyed_service.h"
  13
  14 class ChromeDownloadManagerDelegate;
  15 class DownloadHistory;
  16 class DownloadUIController;
  17 class ExtensionDownloadsEventRouter;
  18 class Profile;
  19
  20 namespace content {
  21 class DownloadManager;
  22 }
  23
  24 namespace extensions {
  25 class ExtensionDownloadsEventRouter;
  26 }
  27
  28 // Owning class for ChromeDownloadManagerDelegate.
  29 class DownloadServiceImpl : public DownloadService {
  30  public:
  31   explicit DownloadServiceImpl(Profile* profile);
  32   ~DownloadServiceImpl() override;
  33
  34   // DownloadService
  35   ChromeDownloadManagerDelegate* GetDownloadManagerDelegate() override;
  36   DownloadHistory* GetDownloadHistory() override;
  37 #if defined(ENABLE_EXTENSIONS)
  38   extensions::ExtensionDownloadsEventRouter* GetExtensionEventRouter() override;
  39 #endif
  40   bool HasCreatedDownloadManager() override;
  41   int NonMaliciousDownloadCount() const override;
  42   void CancelDownloads() override;
  43   void SetDownloadManagerDelegateForTesting(
  44       scoped_ptr<ChromeDownloadManagerDelegate> delegate) override;
  45   bool IsShelfEnabled() override;
  46
  47   // KeyedService
  48   void Shutdown() override;
  49
  50  private:
  51   bool download_manager_created_;
  52   Profile* profile_;
  53
  54   // ChromeDownloadManagerDelegate may be the target of callbacks from
  55   // the history service/DB thread and must be kept alive for those
  56   // callbacks.
  57   scoped_ptr<ChromeDownloadManagerDelegate> manager_delegate_;
  58
  59   scoped_ptr<DownloadHistory> download_history_;
  60
  61   // The UI controller is responsible for observing the download manager and
  62   // notifying the UI of any new downloads. Its lifetime matches that of the
  63   // associated download manager.
  64   // Note on destruction order: download_ui_ depends on download_history_ and
  65   // should be destroyed before the latter.
  66   scoped_ptr<DownloadUIController> download_ui_;
  67
  68 // On Android, GET downloads are not handled by the DownloadManager.
  69 // Once we have extensions on android, we probably need the EventRouter
  70 // in ContentViewDownloadDelegate which knows about both GET and POST
  71 // downloads.
  72 #if defined(ENABLE_EXTENSIONS)
  73   // The ExtensionDownloadsEventRouter dispatches download creation, change, and
  74   // erase events to extensions. Like ChromeDownloadManagerDelegate, it's a
  75   // chrome-level concept and its lifetime should match DownloadManager. There
  76   // should be a separate EDER for on-record and off-record managers.
  77   // There does not appear to be a separate ExtensionSystem for on-record and
  78   // off-record profiles, so ExtensionSystem cannot own the EDER.
  79   scoped_ptr<extensions::ExtensionDownloadsEventRouter> extension_event_router_;
  80 #endif
  81
  82   DISALLOW_COPY_AND_ASSIGN(DownloadServiceImpl);
  83 };
  84
  85 #endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_SERVICE_IMPL_H_