content/browser/worker_host/worker_storage_partition.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 CONTENT_BROWSER_WORKER_HOST_WORKER_STORAGE_PARTITION_H_
   6 #define CONTENT_BROWSER_WORKER_HOST_WORKER_STORAGE_PARTITION_H_
   7
   8 #include "base/memory/ref_counted.h"
   9
  10 namespace fileapi {
  11 class FileSystemContext;
  12 }  // namespace fileapi
  13
  14 namespace net {
  15 class URLRequestContextGetter;
  16 }
  17
  18 namespace webkit_database {
  19 class DatabaseTracker;
  20 }  // namespace webkit_database
  21
  22 namespace content {
  23 class ChromeAppCacheService;
  24 class IndexedDBContextImpl;
  25
  26 // Contains the data from StoragePartition for use by Worker APIs.
  27 //
  28 // StoragePartition meant for the UI so we can't use it directly in many
  29 // Worker APIs that run on the IO thread. While we could make it RefCounted,
  30 // the Worker system is the only place that really needs access on the IO
  31 // thread. Instead of changing the lifetime semantics of StoragePartition,
  32 // we just create a parallel struct here to simplify the APIs of various
  33 // methods in WorkerServiceImpl.
  34 //
  35 // This class is effectively a struct, but we make it a class because we want to
  36 // define copy constructors, assignment operators, and an Equals() function for
  37 // it which makes it look awkward as a struct.
  38 class WorkerStoragePartition {
  39  public:
  40   WorkerStoragePartition(
  41       net::URLRequestContextGetter* url_request_context,
  42       net::URLRequestContextGetter* media_url_request_context,
  43       ChromeAppCacheService* appcache_service,
  44       fileapi::FileSystemContext* filesystem_context,
  45       webkit_database::DatabaseTracker* database_tracker,
  46       IndexedDBContextImpl* indexed_db_context);
  47   ~WorkerStoragePartition();
  48
  49   // Declaring so these don't get inlined which has the unfortunate effect of
  50   // requiring all including classes to have the full definition of every member
  51   // type.
  52   WorkerStoragePartition(const WorkerStoragePartition& other);
  53   const WorkerStoragePartition& operator=(const WorkerStoragePartition& rhs);
  54
  55   bool Equals(const WorkerStoragePartition& other) const;
  56
  57   net::URLRequestContextGetter* url_request_context() const {
  58     return url_request_context_.get();
  59   }
  60
  61   net::URLRequestContextGetter* media_url_request_context() const {
  62     return media_url_request_context_.get();
  63   }
  64
  65   ChromeAppCacheService* appcache_service() const {
  66     return appcache_service_.get();
  67   }
  68
  69   fileapi::FileSystemContext* filesystem_context() const {
  70     return filesystem_context_.get();
  71   }
  72
  73   webkit_database::DatabaseTracker* database_tracker() const {
  74     return database_tracker_.get();
  75   }
  76
  77   IndexedDBContextImpl* indexed_db_context() const {
  78     return indexed_db_context_.get();
  79   }
  80
  81  private:
  82   void Copy(const WorkerStoragePartition& other);
  83
  84   scoped_refptr<net::URLRequestContextGetter> url_request_context_;
  85   scoped_refptr<net::URLRequestContextGetter> media_url_request_context_;
  86   scoped_refptr<ChromeAppCacheService> appcache_service_;
  87   scoped_refptr<fileapi::FileSystemContext> filesystem_context_;
  88   scoped_refptr<webkit_database::DatabaseTracker> database_tracker_;
  89   scoped_refptr<IndexedDBContextImpl> indexed_db_context_;
  90 };
  91
  92 }  // namespace content
  93
  94 #endif  // CONTENT_BROWSER_WORKER_HOST_WORKER_STORAGE_PARTITION_H_