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
19namespace content {
20
21class RendererPpapiHost;
22
23class 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  virtual ~PepperFileSystemHost();
43
44  // ppapi::host::ResourceHost override.
45  virtual int32_t OnResourceMessageReceived(
46      const IPC::Message& msg,
47      ppapi::host::HostMessageContext* context) OVERRIDE;
48  virtual 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_
83