Add Query() support to FileRef

webkit/plugins/ppapi/ppb_file_ref_impl.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WEBKIT_PLUGINS_PPAPI_PPB_FILE_REF_IMPL_H_
 #define WEBKIT_PLUGINS_PPAPI_PPB_FILE_REF_IMPL_H_
 
 #include <string>
 
 #include "base/files/file_path.h"
+#include "base/memory/weak_ptr.h"
 #include "googleurl/src/gurl.h"
+#include "ppapi/c/pp_file_info.h"
 #include "ppapi/c/ppb_file_ref.h"
 #include "ppapi/shared_impl/ppb_file_ref_shared.h"
 #include "ppapi/shared_impl/var.h"
 #include "webkit/glue/webkit_glue_export.h"
 
 namespace webkit {
 namespace ppapi {
 
 using ::ppapi::StringVar;
 
@@ skipping 24 matching lines @@
       scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
   virtual int32_t Touch(
       PP_Time last_access_time,
       PP_Time last_modified_time,
       scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
   virtual int32_t Delete(
       scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
   virtual int32_t Rename(
       PP_Resource new_file_ref,
       scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
+  virtual int32_t Query(
+      PP_FileInfo* info,
+      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
   virtual PP_Var GetAbsolutePath();
 
   PPB_FileSystem_Impl* file_system() const { return file_system_.get(); }
 
   // Returns the system path corresponding to this file. Valid only for
   // external filesystems.
   base::FilePath GetSystemPath() const;
 
   // Returns the FileSystem API URL corresponding to this file.
   GURL GetFileSystemURL() const;
 
   // Checks if file ref has file system instance and if the instance is opened.
   bool HasValidFileSystem() const;
  private:
+  void QueryCallback(PP_FileInfo* info,
+                     scoped_refptr< ::ppapi::TrackedCallback> callback,
+                     base::PlatformFileError error_code,
+                     base::PassPlatformFile passed_file);
+  void GetFileInfoCallback(PP_FileInfo* info,
+                           scoped_refptr< ::ppapi::TrackedCallback> callback,
+                           base::PlatformFileError error_code,
+                           const base::PlatformFileInfo& file_info);
+
   // Many mutation functions are allow only to non-external filesystems, This
   // function returns true if the filesystem is opened and isn't external as an
   // access check for these functions.
   bool IsValidNonExternalFileSystem() const;
 
   // Null for external filesystems.
   scoped_refptr<PPB_FileSystem_Impl> file_system_;
 
   // Used only for external filesystems.
   base::FilePath external_file_system_path_;
 
   // Lazily initialized var created from the external path. This is so we can
   // return the identical string object every time it is requested.
   scoped_refptr<StringVar> external_path_var_;
 
+  // This class makes asynchronous calls to perform file operations to support
+  // Query().
+  base::WeakPtrFactory<PPB_FileRef_Impl> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(PPB_FileRef_Impl);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPB_FILE_REF_IMPL_H_