webkit/browser/fileapi/sandbox_quota_observer.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 WEBKIT_BROWSER_FILEAPI_SANDBOX_QUOTA_OBSERVER_H_
   6 #define WEBKIT_BROWSER_FILEAPI_SANDBOX_QUOTA_OBSERVER_H_
   7
   8 #include <map>
   9
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "base/files/file_path.h"
  13 #include "base/memory/ref_counted.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/memory/weak_ptr.h"
  16 #include "webkit/browser/fileapi/file_observers.h"
  17 #include "webkit/browser/fileapi/file_system_url.h"
  18
  19 namespace base {
  20 class SequencedTaskRunner;
  21 }
  22
  23 namespace quota {
  24 class QuotaManagerProxy;
  25 }
  26
  27 namespace fileapi {
  28
  29 class FileSystemUsageCache;
  30 class FileSystemURL;
  31 class TimedTaskHelper;
  32 class ObfuscatedFileUtil;
  33
  34 class SandboxQuotaObserver
  35     : public FileUpdateObserver,
  36       public FileAccessObserver {
  37  public:
  38   typedef std::map<base::FilePath, int64> PendingUpdateNotificationMap;
  39
  40   SandboxQuotaObserver(
  41       quota::QuotaManagerProxy* quota_manager_proxy,
  42       base::SequencedTaskRunner* update_notify_runner,
  43       ObfuscatedFileUtil* sandbox_file_util,
  44       FileSystemUsageCache* file_system_usage_cache_);
  45   virtual ~SandboxQuotaObserver();
  46
  47   // FileUpdateObserver overrides.
  48   virtual void OnStartUpdate(const FileSystemURL& url) OVERRIDE;
  49   virtual void OnUpdate(const FileSystemURL& url, int64 delta) OVERRIDE;
  50   virtual void OnEndUpdate(const FileSystemURL& url) OVERRIDE;
  51
  52   // FileAccessObserver overrides.
  53   virtual void OnAccess(const FileSystemURL& url) OVERRIDE;
  54
  55   void SetUsageCacheEnabled(const GURL& origin,
  56                             FileSystemType type,
  57                             bool enabled);
  58
  59  private:
  60   void ApplyPendingUsageUpdate();
  61   void UpdateUsageCacheFile(const base::FilePath& usage_file_path, int64 delta);
  62
  63   base::FilePath GetUsageCachePath(const FileSystemURL& url);
  64
  65   scoped_refptr<quota::QuotaManagerProxy> quota_manager_proxy_;
  66   scoped_refptr<base::SequencedTaskRunner> update_notify_runner_;
  67
  68   // Not owned; sandbox_file_util_ should have identical lifetime with this.
  69   ObfuscatedFileUtil* sandbox_file_util_;
  70
  71   // Not owned; file_system_usage_cache_ should have longer lifetime than this.
  72   FileSystemUsageCache* file_system_usage_cache_;
  73
  74   PendingUpdateNotificationMap pending_update_notification_;
  75   scoped_ptr<TimedTaskHelper> delayed_cache_update_helper_;
  76
  77   DISALLOW_COPY_AND_ASSIGN(SandboxQuotaObserver);
  78 };
  79
  80 }  // namespace fileapi
  81
  82 #endif  // WEBKIT_BROWSER_FILEAPI_SANDBOX_QUOTA_OBSERVER_H_