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