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// Copyright 2014 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/file_manager/snapshot_manager.h"
#include "base/bind.h"
#include "chrome/browser/chromeos/file_manager/app_id.h"
#include "chrome/browser/chromeos/file_manager/fileapi_util.h"
#include "content/public/browser/browser_thread.h"
#include "google_apis/drive/task_util.h"
#include "webkit/browser/fileapi/file_system_context.h"
#include "webkit/common/blob/shareable_file_reference.h"
namespace file_manager {
namespace {
// Part of CreateManagedSnapshot. Runs CreateSnapshotFile method of fileapi.
void CreateSnapshotFileOnIOThread(
scoped_refptr<fileapi::FileSystemContext> context,
const fileapi::FileSystemURL& url,
const fileapi::FileSystemOperation::SnapshotFileCallback& callback) {
DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
context->operation_runner()->CreateSnapshotFile(url, callback);
}
// Utility for destructing the bound |file_refs| on IO thread. This is meant
// to be used together with base::Bind. After this function finishes, the
// Bind callback should destruct the bound argument.
void FreeReferenceOnIOThread(const std::vector<
scoped_refptr<webkit_blob::ShareableFileReference> >& file_refs) {
DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
}
} // namespace
SnapshotManager::SnapshotManager(Profile* profile)
: profile_(profile), weak_ptr_factory_(this) {
}
SnapshotManager::~SnapshotManager() {
if (!file_refs_.empty()) {
bool posted = content::BrowserThread::PostTask(
content::BrowserThread::IO,
FROM_HERE,
base::Bind(&FreeReferenceOnIOThread, file_refs_));
DCHECK(posted);
}
}
void SnapshotManager::CreateManagedSnapshot(
const base::FilePath& absolute_file_path,
const LocalPathCallback& callback) {
fileapi::FileSystemContext* context =
util::GetFileSystemContextForExtensionId(profile_, kFileManagerAppId);
DCHECK(context);
GURL url;
if (!util::ConvertAbsoluteFilePathToFileSystemUrl(
profile_, absolute_file_path, kFileManagerAppId, &url)) {
callback.Run(base::FilePath());
return;
}
// TODO(kinaba): crbug.com/386519 evict old |file_refs_| before creating a new
// one if necessary.
content::BrowserThread::PostTask(
content::BrowserThread::IO,
FROM_HERE,
base::Bind(&CreateSnapshotFileOnIOThread,
make_scoped_refptr(context),
context->CrackURL(url),
google_apis::CreateRelayCallback(
base::Bind(&SnapshotManager::OnCreateSnapshotFile,
weak_ptr_factory_.GetWeakPtr(),
callback))));
}
void SnapshotManager::OnCreateSnapshotFile(
const LocalPathCallback& callback,
base::File::Error result,
const base::File::Info& file_info,
const base::FilePath& platform_path,
const scoped_refptr<webkit_blob::ShareableFileReference>& file_ref) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
if (result != base::File::FILE_OK) {
callback.Run(base::FilePath());
return;
}
file_refs_.push_back(file_ref);
callback.Run(platform_path);
}
} // namespace file_manager
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