content/renderer/pepper/pepper_file_system_host.h

   1 // Copyright (c) 2013 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_RENDERER_PEPPER_PEPPER_FILE_SYSTEM_HOST_H_
   6 #define CONTENT_RENDERER_PEPPER_PEPPER_FILE_SYSTEM_HOST_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/files/file.h"
  12 #include "base/memory/weak_ptr.h"
  13 #include "ppapi/c/pp_file_info.h"
  14 #include "ppapi/c/private/ppb_isolated_file_system_private.h"
  15 #include "ppapi/host/host_message_context.h"
  16 #include "ppapi/host/resource_host.h"
  17 #include "url/gurl.h"
  18
  19 namespace content {
  20
  21 class RendererPpapiHost;
  22
  23 class PepperFileSystemHost
  24     : public ppapi::host::ResourceHost,
  25       public base::SupportsWeakPtr<PepperFileSystemHost> {
  26  public:
  27   // Creates a new PepperFileSystemHost for a file system of a given |type|. The
  28   // host will not be connected to any specific file system, and will need to
  29   // subsequently be opened before use.
  30   PepperFileSystemHost(RendererPpapiHost* host,
  31                        PP_Instance instance,
  32                        PP_Resource resource,
  33                        PP_FileSystemType type);
  34   // Creates a new PepperFileSystemHost with an existing file system at the
  35   // given |root_url| and of the given |type|. The file system must already be
  36   // opened. Once created, the PepperFileSystemHost is already opened for use.
  37   PepperFileSystemHost(RendererPpapiHost* host,
  38                        PP_Instance instance,
  39                        PP_Resource resource,
  40                        const GURL& root_url,
  41                        PP_FileSystemType type);
  42   ~PepperFileSystemHost() override;
  43
  44   // ppapi::host::ResourceHost override.
  45   int32_t OnResourceMessageReceived(
  46       const IPC::Message& msg,
  47       ppapi::host::HostMessageContext* context) override;
  48   bool IsFileSystemHost() override;
  49
  50   // Supports FileRefs direct access on the host side.
  51   PP_FileSystemType GetType() const { return type_; }
  52   bool IsOpened() const { return opened_; }
  53   GURL GetRootUrl() const { return root_url_; }
  54
  55  private:
  56   // Callback for OpenFileSystem.
  57   void DidOpenFileSystem(const std::string& name_unused, const GURL& root);
  58   void DidFailOpenFileSystem(base::File::Error error);
  59
  60   int32_t OnHostMsgOpen(ppapi::host::HostMessageContext* context,
  61                         int64_t expected_size);
  62   int32_t OnHostMsgInitIsolatedFileSystem(
  63       ppapi::host::HostMessageContext* context,
  64       const std::string& fsid,
  65       PP_IsolatedFileSystemType_Private type);
  66
  67   RendererPpapiHost* renderer_ppapi_host_;
  68   ppapi::host::ReplyMessageContext reply_context_;
  69
  70   PP_FileSystemType type_;
  71   bool opened_;  // whether open is successful.
  72   GURL root_url_;
  73   bool called_open_;  // whether open has been called.
  74
  75   base::WeakPtrFactory<PepperFileSystemHost> weak_factory_;
  76
  77   DISALLOW_COPY_AND_ASSIGN(PepperFileSystemHost);
  78 };
  79
  80 }  // namespace content
  81
  82 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_FILE_SYSTEM_HOST_H_