ppapi/proxy/file_ref_resource.h

   1 // Copyright 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 PPAPI_PROXY_FILE_REF_RESOURCE_H_
   6 #define PPAPI_PROXY_FILE_REF_RESOURCE_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "ppapi/c/pp_instance.h"
  13 #include "ppapi/c/pp_resource.h"
  14 #include "ppapi/c/pp_time.h"
  15 #include "ppapi/proxy/plugin_resource.h"
  16 #include "ppapi/proxy/ppapi_proxy_export.h"
  17 #include "ppapi/shared_impl/file_ref_create_info.h"
  18 #include "ppapi/shared_impl/scoped_pp_resource.h"
  19 #include "ppapi/thunk/ppb_file_ref_api.h"
  20
  21 namespace ppapi {
  22 class StringVar;
  23
  24 namespace proxy {
  25
  26 class PPAPI_PROXY_EXPORT FileRefResource
  27     : public PluginResource,
  28       public thunk::PPB_FileRef_API {
  29  public:
  30   static PP_Resource CreateFileRef(Connection connection,
  31                                    PP_Instance instance,
  32                                    const FileRefCreateInfo& info);
  33
  34   virtual ~FileRefResource();
  35
  36   // Resource implementation.
  37   virtual thunk::PPB_FileRef_API* AsPPB_FileRef_API() override;
  38
  39   // PPB_FileRef_API implementation.
  40   virtual PP_FileSystemType GetFileSystemType() const override;
  41   virtual PP_Var GetName() const override;
  42   virtual PP_Var GetPath() const override;
  43   virtual PP_Resource GetParent() override;
  44   virtual int32_t MakeDirectory(
  45       int32_t make_directory_flags,
  46       scoped_refptr<TrackedCallback> callback) override;
  47   virtual int32_t Touch(PP_Time last_access_time,
  48                         PP_Time last_modified_time,
  49                         scoped_refptr<TrackedCallback> callback) override;
  50   virtual int32_t Delete(scoped_refptr<TrackedCallback> callback) override;
  51   virtual int32_t Rename(PP_Resource new_file_ref,
  52                          scoped_refptr<TrackedCallback> callback) override;
  53   virtual int32_t Query(PP_FileInfo* info,
  54                         scoped_refptr<TrackedCallback> callback) override;
  55   virtual int32_t ReadDirectoryEntries(
  56       const PP_ArrayOutput& output,
  57       scoped_refptr<TrackedCallback> callback) override;
  58   virtual const FileRefCreateInfo& GetCreateInfo() const override;
  59
  60   // Private API
  61   virtual PP_Var GetAbsolutePath() override;
  62
  63  private:
  64   FileRefResource(Connection connection,
  65                   PP_Instance instance,
  66                   const FileRefCreateInfo& info);
  67
  68   void RunTrackedCallback(scoped_refptr<TrackedCallback> callback,
  69                           const ResourceMessageReplyParams& params);
  70
  71   void OnQueryReply(PP_FileInfo* out_info,
  72                     scoped_refptr<TrackedCallback> callback,
  73                     const ResourceMessageReplyParams& params,
  74                     const PP_FileInfo& info);
  75
  76   void OnDirectoryEntriesReply(
  77       const PP_ArrayOutput& output,
  78       scoped_refptr<TrackedCallback> callback,
  79       const ResourceMessageReplyParams& params,
  80       const std::vector<ppapi::FileRefCreateInfo>& infos,
  81       const std::vector<PP_FileType>& file_types);
  82
  83   bool uses_internal_paths() const;
  84
  85   // Populated after creation.
  86   FileRefCreateInfo create_info_;
  87
  88   // Some file ref operations may fail if the the file system resource inside
  89   // create_info_ is destroyed. Therefore, we explicitly hold a reference to
  90   // the file system resource to make sure it outlives the file ref.
  91   ScopedPPResource file_system_resource_;
  92
  93   scoped_refptr<StringVar> name_var_;
  94   scoped_refptr<StringVar> path_var_;
  95   scoped_refptr<StringVar> absolute_path_var_;
  96
  97   DISALLOW_COPY_AND_ASSIGN(FileRefResource);
  98 };
  99
 100 }  // namespace proxy
 101 }  // namespace ppapi
 102
 103 #endif  // PPAPI_PROXY_FILE_REF_RESOURCE_H_