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