Add drive::FileSystem::GetFileByPathForSaving().

chrome/browser/chromeos/drive/file_system.cc

 // 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.
 
 #include "chrome/browser/chromeos/drive/file_system.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/platform_file.h"
 #include "base/prefs/pref_change_registrar.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/stringprintf.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "chrome/browser/chromeos/drive/change_list_loader.h"
 #include "chrome/browser/chromeos/drive/change_list_processor.h"
 #include "chrome/browser/chromeos/drive/drive.pb.h"
 #include "chrome/browser/chromeos/drive/file_cache.h"
 #include "chrome/browser/chromeos/drive/file_system/copy_operation.h"
 #include "chrome/browser/chromeos/drive/file_system/create_directory_operation.h"
 #include "chrome/browser/chromeos/drive/file_system/create_file_operation.h"
 #include "chrome/browser/chromeos/drive/file_system/download_operation.h"
+#include "chrome/browser/chromeos/drive/file_system/get_file_for_saving_operation.h"
 #include "chrome/browser/chromeos/drive/file_system/move_operation.h"
 #include "chrome/browser/chromeos/drive/file_system/open_file_operation.h"
 #include "chrome/browser/chromeos/drive/file_system/remove_operation.h"
 #include "chrome/browser/chromeos/drive/file_system/search_operation.h"
 #include "chrome/browser/chromeos/drive/file_system/touch_operation.h"
 #include "chrome/browser/chromeos/drive/file_system/truncate_operation.h"
 #include "chrome/browser/chromeos/drive/file_system/update_operation.h"
 #include "chrome/browser/chromeos/drive/file_system_observer.h"
 #include "chrome/browser/chromeos/drive/file_system_util.h"
+#include "chrome/browser/chromeos/drive/file_write_watcher.h"
 #include "chrome/browser/chromeos/drive/job_scheduler.h"
 #include "chrome/browser/chromeos/drive/remove_stale_cache_files.h"
 #include "chrome/browser/chromeos/drive/resource_entry_conversion.h"
 #include "chrome/browser/chromeos/drive/search_metadata.h"
 #include "chrome/browser/chromeos/drive/sync_client.h"
 #include "chrome/browser/drive/drive_api_util.h"
 #include "chrome/browser/drive/drive_service_interface.h"
 #include "chrome/browser/google_apis/drive_api_parser.h"
 #include "chrome/common/pref_names.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 159 matching lines @@
                                          cache_,
                                          temporary_file_directory_));
   update_operation_.reset(
       new file_system::UpdateOperation(blocking_task_runner_.get(),
                                        observer,
                                        scheduler_,
                                        resource_metadata_,
                                        cache_));
   search_operation_.reset(new file_system::SearchOperation(
       blocking_task_runner_.get(), scheduler_, resource_metadata_));
+  get_file_for_saving_operation_.reset(
+      new file_system::GetFileForSavingOperation(blocking_task_runner_.get(),
+                                                 observer,
+                                                 scheduler_,
+                                                 resource_metadata_,
+                                                 cache_,
+                                                 temporary_file_directory_));
+
   sync_client_.reset(new internal::SyncClient(blocking_task_runner_.get(),
                                               observer,
                                               scheduler_,
                                               resource_metadata_,
                                               cache_,
                                               temporary_file_directory_));
-
+  file_write_watcher_.reset(new internal::FileWriteWatcher(observer));

[hashimoto, 2013/08/07 10:31:54]

What is this watcher serving for?

[kinaba, 2013/08/07 11:28:38]

Oops. I forgot to remove this prototype impl of mine.

   hide_hosted_docs_ =
       pref_service_->GetBoolean(prefs::kDisableDriveHostedFiles);
 
   InitializePreferenceObserver();
 }
 
 void FileSystem::ReloadAfterReset(FileError error) {
   if (error != FILE_ERROR_OK) {
     LOG(ERROR) << "Failed to reset the resource metadata: "
                << FileErrorToString(error);
@@ skipping 256 matching lines @@
   DCHECK(!callback.is_null());
 
   download_operation_->EnsureFileDownloadedByPath(
       file_path,
       ClientContext(USER_INITIATED),
       GetFileContentInitializedCallback(),
       google_apis::GetContentCallback(),
       callback);
 }
 
+void FileSystem::GetFileByPathForSaving(const base::FilePath& file_path,
+                                        const GetFileCallback& callback) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(!callback.is_null());
+
+  get_file_for_saving_operation_->GetFileForSaving(file_path, callback);
+}
+
 void FileSystem::GetFileContentByPath(
     const base::FilePath& file_path,
     const GetFileContentInitializedCallback& initialized_callback,
     const google_apis::GetContentCallback& get_content_callback,
     const FileOperationCallback& completion_callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!initialized_callback.is_null());
   DCHECK(!get_content_callback.is_null());
   DCHECK(!completion_callback.is_null());
 
@@ skipping 435 matching lines @@
 void FileSystem::OpenFile(const base::FilePath& file_path,
                           OpenMode open_mode,
                           const OpenFileCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!callback.is_null());
 
   open_file_operation_->OpenFile(file_path, open_mode, callback);
 }
 
 }  // namespace drive