Home | History | Annotate | Download | only in pepper 
      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   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