chromeos: Add DriveFileSystem::Pin/Unpin

chrome/browser/chromeos/drive/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/drive_file_system.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/message_loop_proxy.h"
@@ skipping 447 matching lines @@
   }
 
   // No entry found at |file_path|. Let's create a brand new file.
   // For now, it is implemented by uploading an empty file (/dev/null).
   // TODO(kinaba): http://crbug.com/135143. Implement in a nicer way.
   drive_operations_.TransferRegularFile(base::FilePath(kEmptyFilePath),
                                         file_path,
                                         callback);
 }
 
+void DriveFileSystem::Pin(const base::FilePath& file_path,
+                          const FileOperationCallback& callback) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(!callback.is_null());
+
+  GetEntryInfoByPath(file_path,
+                     base::Bind(&DriveFileSystem::PinAfterGetEntryInfoByPath,
+                                weak_ptr_factory_.GetWeakPtr(),
+                                callback));
+}
+
+void DriveFileSystem::PinAfterGetEntryInfoByPath(
+    const FileOperationCallback& callback,
+    DriveFileError error,
+    scoped_ptr<DriveEntryProto> entry) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(!callback.is_null());
+
+  // TODO(hashimoto): Support pinning directories. crbug.com/127831
+  if (entry && entry->file_info().is_directory())
+    error = DRIVE_FILE_ERROR_NOT_A_FILE;
+
+  if (error != DRIVE_FILE_OK) {
+    callback.Run(error);
+    return;
+  }
+  DCHECK(entry);
+
+  cache_->Pin(entry->resource_id(), entry->file_specific_info().file_md5(),
+              callback);
+}
+
+void DriveFileSystem::Unpin(const base::FilePath& file_path,
+                            const FileOperationCallback& callback) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(!callback.is_null());
+
+  GetEntryInfoByPath(file_path,
+                     base::Bind(&DriveFileSystem::UnpinAfterGetEntryInfoByPath,
+                                weak_ptr_factory_.GetWeakPtr(),
+                                callback));
+}
+
+void DriveFileSystem::UnpinAfterGetEntryInfoByPath(
+    const FileOperationCallback& callback,
+    DriveFileError error,
+    scoped_ptr<DriveEntryProto> entry) {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(!callback.is_null());
+
+  // TODO(hashimoto): Support pinning directories. crbug.com/127831
+  if (entry && entry->file_info().is_directory())
+    error = DRIVE_FILE_ERROR_NOT_A_FILE;
+
+  if (error != DRIVE_FILE_OK) {
+    callback.Run(error);
+    return;
+  }
+  DCHECK(entry);
+
+  cache_->Unpin(entry->resource_id(), entry->file_specific_info().file_md5(),
+                callback);
+}
+
 void DriveFileSystem::GetFileByPath(const base::FilePath& file_path,
                                     const GetFileCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(!callback.is_null());
 
   resource_metadata_->GetEntryInfoByPath(
       file_path,
       base::Bind(&DriveFileSystem::OnGetEntryInfoCompleteForGetFileByPath,
                  weak_ptr_factory_.GetWeakPtr(),
                  file_path,
@@ skipping 1204 matching lines @@
     return;
   }
 
   PlatformFileInfoProto entry_file_info;
   util::ConvertPlatformFileInfoToProto(*file_info, &entry_file_info);
   *entry_proto->mutable_file_info() = entry_file_info;
   callback.Run(DRIVE_FILE_OK, entry_proto.Pass());
 }
 
 }  // namespace drive