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   ~FileRefResource() override;
  35
  36   // Resource implementation.
  37   thunk::PPB_FileRef_API* AsPPB_FileRef_API() override;
  38
  39   // PPB_FileRef_API implementation.
  40   PP_FileSystemType GetFileSystemType() const override;
  41   PP_Var GetName() const override;
  42   PP_Var GetPath() const override;
  43   PP_Resource GetParent() override;
  44   int32_t MakeDirectory(int32_t make_directory_flags,
  45                         scoped_refptr<TrackedCallback> callback) override;
  46   int32_t Touch(PP_Time last_access_time,
  47                 PP_Time last_modified_time,
  48                 scoped_refptr<TrackedCallback> callback) override;
  49   int32_t Delete(scoped_refptr<TrackedCallback> callback) override;
  50   int32_t Rename(PP_Resource new_file_ref,
  51                  scoped_refptr<TrackedCallback> callback) override;
  52   int32_t Query(PP_FileInfo* info,
  53                 scoped_refptr<TrackedCallback> callback) override;
  54   int32_t ReadDirectoryEntries(
  55       const PP_ArrayOutput& output,
  56       scoped_refptr<TrackedCallback> callback) override;
  57   const FileRefCreateInfo& GetCreateInfo() const override;
  58
  59   // Private API
  60   PP_Var GetAbsolutePath() override;
  61
  62  private:
  63   FileRefResource(Connection connection,
  64                   PP_Instance instance,
  65                   const FileRefCreateInfo& info);
  66
  67   void RunTrackedCallback(scoped_refptr<TrackedCallback> callback,
  68                           const ResourceMessageReplyParams& params);
  69
  70   void OnQueryReply(PP_FileInfo* out_info,
  71                     scoped_refptr<TrackedCallback> callback,
  72                     const ResourceMessageReplyParams& params,
  73                     const PP_FileInfo& info);
  74
  75   void OnDirectoryEntriesReply(
  76       const PP_ArrayOutput& output,
  77       scoped_refptr<TrackedCallback> callback,
  78       const ResourceMessageReplyParams& params,
  79       const std::vector<ppapi::FileRefCreateInfo>& infos,
  80       const std::vector<PP_FileType>& file_types);
  81
  82   bool uses_internal_paths() const;
  83
  84   // Populated after creation.
  85   FileRefCreateInfo create_info_;
  86
  87   // Some file ref operations may fail if the the file system resource inside
  88   // create_info_ is destroyed. Therefore, we explicitly hold a reference to
  89   // the file system resource to make sure it outlives the file ref.
  90   ScopedPPResource file_system_resource_;
  91
  92   scoped_refptr<StringVar> name_var_;
  93   scoped_refptr<StringVar> path_var_;
  94   scoped_refptr<StringVar> absolute_path_var_;
  95
  96   DISALLOW_COPY_AND_ASSIGN(FileRefResource);
  97 };
  98
  99 }  // namespace proxy
 100 }  // namespace ppapi
 101
 102 #endif  // PPAPI_PROXY_FILE_REF_RESOURCE_H_