content/common/quota_dispatcher.h

   1 // Copyright (c) 2011 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_COMMON_QUOTA_DISPATCHER_H_
   6 #define CONTENT_COMMON_QUOTA_DISPATCHER_H_
   7
   8 #include <map>
   9 #include <set>
  10
  11 #include "base/basictypes.h"
  12 #include "base/id_map.h"
  13 #include "ipc/ipc_channel.h"
  14 #include "third_party/WebKit/Source/WebKit/chromium/public/WebStorageQuotaError.h"
  15 #include "third_party/WebKit/Source/WebKit/chromium/public/WebStorageQuotaType.h"
  16
  17 class GURL;
  18
  19 namespace IPC {
  20 class Message;
  21 }
  22
  23 namespace WebKit {
  24 class WebStorageQuotaCallbacks;
  25 }
  26
  27 // Dispatches and sends quota related messages sent to/from a child
  28 // process from/to the main browser process.  There is one instance
  29 // per child process.  Messages are dispatched on the main child thread.
  30 class QuotaDispatcher : public IPC::Channel::Listener {
  31  public:
  32   QuotaDispatcher();
  33   virtual ~QuotaDispatcher();
  34
  35   // IPC::Channel::Listener implementation.
  36   virtual bool OnMessageReceived(const IPC::Message& msg);
  37
  38   void QueryStorageUsageAndQuota(const GURL& gurl,
  39                                  WebKit::WebStorageQuotaType type,
  40                                  WebKit::WebStorageQuotaCallbacks* callbacks);
  41   void RequestStorageQuota(int render_view_id,
  42                            const GURL& gurl,
  43                            WebKit::WebStorageQuotaType type,
  44                            unsigned long long requested_size,
  45                            WebKit::WebStorageQuotaCallbacks* callbacks);
  46
  47  private:
  48   // Message handlers.
  49   void DidQueryStorageUsageAndQuota(int request_id,
  50                                     int64 current_usage,
  51                                     int64 current_quota);
  52   void DidGrantStorageQuota(int request_id,
  53                             int64 granted_quota);
  54   void DidFail(int request_id,
  55                WebKit::WebStorageQuotaError error);
  56
  57   IDMap<WebKit::WebStorageQuotaCallbacks> pending_quota_callbacks_;
  58
  59   DISALLOW_COPY_AND_ASSIGN(QuotaDispatcher);
  60 };
  61
  62 #endif  // CONTENT_COMMON_QUOTA_DISPATCHER_H_