Implement TouchFile on drive::FileSystem.

chrome/browser/chromeos/drive/file_system/touch_operation.cc

+// Copyright 2013 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/touch_operation.h"
+
+#include "base/bind.h"
+#include "base/files/file_path.h"
+#include "base/sequenced_task_runner.h"
+#include "base/time.h"
+#include "chrome/browser/chromeos/drive/file_errors.h"
+#include "chrome/browser/chromeos/drive/file_system/operation_observer.h"
+#include "chrome/browser/chromeos/drive/file_system_util.h"
+#include "chrome/browser/chromeos/drive/job_scheduler.h"
+#include "chrome/browser/chromeos/drive/resource_entry_conversion.h"
+#include "chrome/browser/chromeos/drive/resource_metadata.h"
+#include "content/public/browser/browser_thread.h"
+
+using content::BrowserThread;
+
+namespace drive {
+namespace file_system {
+
+TouchOperation::TouchOperation(base::SequencedTaskRunner* blocking_task_runner,
+                               OperationObserver* observer,
+                               JobScheduler* scheduler,
+                               internal::ResourceMetadata* metadata)
+    : blocking_task_runner_(blocking_task_runner),
+      observer_(observer),
+      scheduler_(scheduler),
+      metadata_(metadata),
+      weak_ptr_factory_(this) {
+}
+
+TouchOperation::~TouchOperation() {
+}
+
+void TouchOperation::TouchFile(const base::FilePath& file_path,
+                               const base::Time& last_access_time,
+                               const base::Time& last_modified_time,
+                               const FileOperationCallback& callback) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(!callback.is_null());
+
+  ResourceEntry* entry = new ResourceEntry;
+  base::PostTaskAndReplyWithResult(
+      blocking_task_runner_,
+      FROM_HERE,
+      base::Bind(&internal::ResourceMetadata::GetResourceEntryByPath,
+                 base::Unretained(metadata_), file_path, entry),
+      base::Bind(&TouchOperation::TouchFileAfterGetResourceEntry,
+                 weak_ptr_factory_.GetWeakPtr(),
+                 file_path, last_access_time, last_modified_time, callback,
+                 base::Owned(entry)));
+}
+
+void TouchOperation::TouchFileAfterGetResourceEntry(
+    const base::FilePath& file_path,
+    const base::Time& last_access_time,
+    const base::Time& last_modified_time,
+    const FileOperationCallback& callback,
+    ResourceEntry* entry,
+    FileError error) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(!callback.is_null());
+  DCHECK(entry);
+
+  if (error != FILE_ERROR_OK) {
+    callback.Run(error);
+    return;
+  }
+
+  // Note: |last_modified_time| is mapped to modifiedDate, |last_access_time|
+  // is mapped to lastViewedByMeDate. See also ConvertToResourceEntry().
+  scheduler_->TouchResource(
+      entry->resource_id(), last_modified_time, last_access_time,
+      base::Bind(&TouchOperation::TouchFileAfterServerTimeStampUpdated,
+                 weak_ptr_factory_.GetWeakPtr(),
+                 file_path, callback));
+}
+
+void TouchOperation::TouchFileAfterServerTimeStampUpdated(
+    const base::FilePath& file_path,
+    const FileOperationCallback& callback,
+    google_apis::GDataErrorCode gdata_error,
+    scoped_ptr<google_apis::ResourceEntry> resource_entry) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(!callback.is_null());
+
+  FileError error = util::GDataToFileError(gdata_error);
+  if (error != FILE_ERROR_OK) {
+    callback.Run(error);
+    return;
+  }
+
+  base::PostTaskAndReplyWithResult(
+      blocking_task_runner_,
+      FROM_HERE,
+      base::Bind(&internal::ResourceMetadata::RefreshEntry,
+                 base::Unretained(metadata_),
+                 ConvertToResourceEntry(*resource_entry),
+                 static_cast<base::FilePath*>(NULL),
+                 static_cast<ResourceEntry*>(NULL)),
+      base::Bind(&TouchOperation::TouchFileAfterRefreshMetadata,
+                 weak_ptr_factory_.GetWeakPtr(), file_path, callback));
+}
+
+void TouchOperation::TouchFileAfterRefreshMetadata(
+    const base::FilePath& file_path,
+    const FileOperationCallback& callback,
+    FileError error) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(!callback.is_null());
+
+  if (error == FILE_ERROR_OK)
+    observer_->OnDirectoryChangedByOperation(file_path.DirName());
+
+  callback.Run(error);
+}
+
+}  // namespace file_system
+}  // namespace drive