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// 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/remove_operation.h"
#include "base/sequenced_task_runner.h"
#include "chrome/browser/chromeos/drive/drive.pb.h"
#include "chrome/browser/chromeos/drive/file_cache.h"
#include "chrome/browser/chromeos/drive/file_change.h"
#include "chrome/browser/chromeos/drive/file_system/operation_delegate.h"
#include "chrome/browser/chromeos/drive/file_system_util.h"
#include "chrome/browser/chromeos/drive/job_scheduler.h"
#include "chrome/browser/chromeos/drive/resource_metadata.h"
#include "content/public/browser/browser_thread.h"
using content::BrowserThread;
namespace drive {
namespace file_system {
namespace {
// Removes cache file and moves the metadata entry to the trash.
FileError UpdateLocalState(internal::ResourceMetadata* metadata,
internal::FileCache* cache,
const base::FilePath& path,
bool is_recursive,
std::string* local_id,
ResourceEntry* entry,
base::FilePath* changed_path) {
FileError error = metadata->GetIdByPath(path, local_id);
if (error != FILE_ERROR_OK)
return error;
error = metadata->GetResourceEntryById(*local_id, entry);
if (error != FILE_ERROR_OK)
return error;
if (entry->file_info().is_directory() && !is_recursive) {
// Check emptiness of the directory.
ResourceEntryVector entries;
error = metadata->ReadDirectoryByPath(path, &entries);
if (error != FILE_ERROR_OK)
return error;
if (!entries.empty())
return FILE_ERROR_NOT_EMPTY;
}
error = cache->Remove(*local_id);
if (error != FILE_ERROR_OK)
return error;
*changed_path = path;
// Move to the trash.
entry->set_parent_local_id(util::kDriveTrashDirLocalId);
return metadata->RefreshEntry(*entry);
}
} // namespace
RemoveOperation::RemoveOperation(
base::SequencedTaskRunner* blocking_task_runner,
OperationDelegate* delegate,
internal::ResourceMetadata* metadata,
internal::FileCache* cache)
: blocking_task_runner_(blocking_task_runner),
delegate_(delegate),
metadata_(metadata),
cache_(cache),
weak_ptr_factory_(this) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
}
RemoveOperation::~RemoveOperation() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
}
void RemoveOperation::Remove(const base::FilePath& path,
bool is_recursive,
const FileOperationCallback& callback) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
DCHECK(!callback.is_null());
std::string* local_id = new std::string;
base::FilePath* changed_path = new base::FilePath;
ResourceEntry* entry = new ResourceEntry;
base::PostTaskAndReplyWithResult(
blocking_task_runner_.get(),
FROM_HERE,
base::Bind(&UpdateLocalState,
metadata_,
cache_,
path,
is_recursive,
local_id,
entry,
changed_path),
base::Bind(&RemoveOperation::RemoveAfterUpdateLocalState,
weak_ptr_factory_.GetWeakPtr(),
callback,
base::Owned(local_id),
base::Owned(entry),
base::Owned(changed_path)));
}
void RemoveOperation::RemoveAfterUpdateLocalState(
const FileOperationCallback& callback,
const std::string* local_id,
const ResourceEntry* entry,
const base::FilePath* changed_path,
FileError error) {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
DCHECK(!callback.is_null());
if (!changed_path->empty()) {
FileChange changed_file;
changed_file.Update(*changed_path, *entry, FileChange::DELETE);
if (error == FILE_ERROR_OK) {
delegate_->OnFileChangedByOperation(changed_file);
delegate_->OnEntryUpdatedByOperation(ClientContext(USER_INITIATED),
*local_id);
}
}
callback.Run(error);
}
} // namespace file_system
} // namespace drive
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