webkit/plugins/ppapi/ppb_file_ref_impl.h

   1 // Copyright (c) 2012 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 WEBKIT_PLUGINS_PPAPI_PPB_FILE_REF_IMPL_H_
   6 #define WEBKIT_PLUGINS_PPAPI_PPB_FILE_REF_IMPL_H_
   7
   8 #include <string>
   9
  10 #include "base/files/file_path.h"
  11 #include "googleurl/src/gurl.h"
  12 #include "ppapi/c/pp_file_info.h"
  13 #include "ppapi/c/ppb_file_ref.h"
  14 #include "ppapi/shared_impl/ppb_file_ref_shared.h"
  15 #include "ppapi/shared_impl/var.h"
  16 #include "webkit/glue/webkit_glue_export.h"
  17
  18 namespace webkit {
  19 namespace ppapi {
  20
  21 using ::ppapi::StringVar;
  22
  23 class PPB_FileSystem_Impl;
  24
  25 class WEBKIT_GLUE_EXPORT PPB_FileRef_Impl
  26     : public ::ppapi::PPB_FileRef_Shared {
  27  public:
  28   PPB_FileRef_Impl(const ::ppapi::PPB_FileRef_CreateInfo& info,
  29                    PPB_FileSystem_Impl* file_system);
  30   PPB_FileRef_Impl(const ::ppapi::PPB_FileRef_CreateInfo& info,
  31                    const base::FilePath& external_file_path);
  32   virtual ~PPB_FileRef_Impl();
  33
  34   // The returned object will have a refcount of 0 (just like "new").
  35   static PPB_FileRef_Impl* CreateInternal(PP_Resource pp_file_system,
  36                                           const std::string& path);
  37
  38   // The returned object will have a refcount of 0 (just like "new").
  39   static PPB_FileRef_Impl* CreateExternal(PP_Instance instance,
  40                                           const base::FilePath& external_file_path,
  41                                           const std::string& display_name);
  42
  43   // PPB_FileRef_API implementation (not provided by PPB_FileRef_Shared).
  44   virtual PP_Resource GetParent() OVERRIDE;
  45   virtual int32_t MakeDirectory(
  46       PP_Bool make_ancestors,
  47       scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
  48   virtual int32_t Touch(
  49       PP_Time last_access_time,
  50       PP_Time last_modified_time,
  51       scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
  52   virtual int32_t Delete(
  53       scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
  54   virtual int32_t Rename(
  55       PP_Resource new_file_ref,
  56       scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
  57   virtual int32_t Query(
  58       PP_FileInfo* info,
  59       scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
  60   virtual PP_Var GetAbsolutePath();
  61
  62   PPB_FileSystem_Impl* file_system() const { return file_system_.get(); }
  63
  64   // Returns the system path corresponding to this file. Valid only for
  65   // external filesystems.
  66   base::FilePath GetSystemPath() const;
  67
  68   // Returns the FileSystem API URL corresponding to this file.
  69   GURL GetFileSystemURL() const;
  70
  71   // Checks if file ref has file system instance and if the instance is opened.
  72   bool HasValidFileSystem() const;
  73  private:
  74   // Many mutation functions are allow only to non-external filesystems, This
  75   // function returns true if the filesystem is opened and isn't external as an
  76   // access check for these functions.
  77   bool IsValidNonExternalFileSystem() const;
  78
  79   // Null for external filesystems.
  80   scoped_refptr<PPB_FileSystem_Impl> file_system_;
  81
  82   // Used only for external filesystems.
  83   base::FilePath external_file_system_path_;
  84
  85   // Lazily initialized var created from the external path. This is so we can
  86   // return the identical string object every time it is requested.
  87   scoped_refptr<StringVar> external_path_var_;
  88
  89   DISALLOW_COPY_AND_ASSIGN(PPB_FileRef_Impl);
  90 };
  91
  92 }  // namespace ppapi
  93 }  // namespace webkit
  94
  95 #endif  // WEBKIT_PLUGINS_PPAPI_PPB_FILE_REF_IMPL_H_