[COPY] - Implemented API for tracking ongoing file transfers from file manager.

chrome/browser/chromeos/gdata/gdata_file_system.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 CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_
 #define CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_
 
 #include <sys/stat.h>
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop.h"
 #include "base/platform_file.h"
 #include "base/synchronization/lock.h"
 #include "chrome/browser/chromeos/gdata/gdata_files.h"
+#include "chrome/browser/chromeos/gdata/gdata_operation_registry.h"
 #include "chrome/browser/chromeos/gdata/gdata_params.h"
 #include "chrome/browser/chromeos/gdata/gdata_parser.h"
 #include "chrome/browser/chromeos/gdata/gdata_uploader.h"
 #include "chrome/browser/profiles/profile_keyed_service.h"
 #include "chrome/browser/profiles/profile_keyed_service_factory.h"
 
 namespace base {
 class WaitableEvent;
 }
 
@@ skipping 194 matching lines @@
   // Can be called from any thread.
   void RefreshDirectoryAndContinueSearch(const FindFileParams& params);
 
   // Gets absolute path of cache file corresponding to |gdata_file_path|.
   // Upon completion, |callback| is invoked on the same thread where this method
   // was called, with path if it exists and is accessible or empty FilePath
   // otherwise.
   void GetFromCacheForPath(const FilePath& gdata_file_path,
                            const GetFromCacheCallback& callback);
 
+  // Gets the cache state of file corresponding to |resource_id| and |md5| if it
+  // exists on disk.
+  // Initializes cache if it has not been initialized.
+  // Upon completion, |callback| is invoked on the thread where this method was
+  // called with the cache state if file exists in cache or CACHE_STATE_NONE
+  // otherwise.
+  void GetCacheState(const std::string& resource_id,
+                     const std::string& md5,
+                     const GetCacheStateCallback& callback);
+  // Obtains the list of currently active operations.
+  std::vector<GDataOperationRegistry::ProgressStatus> GetProgressStatusList();
+  // Add operation observer.
+  void AddOperationObserver(GDataOperationRegistry::Observer* observer);
+  // Remove operation observer.
+  void RemoveOperationObserver(GDataOperationRegistry::Observer* observer);
+
   // Finds file object by |file_path| and returns its |file_info|.
   // Returns true if file was found.
   bool GetFileInfoFromPath(const FilePath& gdata_file_path,
                            base::PlatformFileInfo* file_info);
 
   // Returns the tmp sub-directory under gdata cache directory, i.e.
   // <user_profile_dir>/GCache/v1/tmp
   FilePath GetGDataCacheTmpDirectory() {
     return cache_paths_[CACHE_TYPE_TMP];
   }
@@ skipping 503 matching lines @@
   virtual void OnError(base::PlatformFileError) OVERRIDE;
   virtual bool had_terminated() const OVERRIDE;
 
   // File entry that was found.
   GDataFileBase* file_;
 };
 
 }  // namespace gdata
 
 #endif  // CHROME_BROWSER_CHROMEOS_GDATA_GDATA_FILE_SYSTEM_H_