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// Copyright (c) 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 "webkit/common/blob/scoped_file.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/files/file_util_proxy.h"
#include "base/location.h"
#include "base/message_loop/message_loop_proxy.h"
#include "base/task_runner.h"
namespace webkit_blob {
ScopedFile::ScopedFile()
: scope_out_policy_(DONT_DELETE_ON_SCOPE_OUT) {
}
ScopedFile::ScopedFile(
const base::FilePath& path, ScopeOutPolicy policy,
base::TaskRunner* file_task_runner)
: path_(path),
scope_out_policy_(policy),
file_task_runner_(file_task_runner) {
DCHECK(path.empty() || policy != DELETE_ON_SCOPE_OUT || file_task_runner)
<< "path:" << path.value()
<< " policy:" << policy
<< " runner:" << file_task_runner;
}
ScopedFile::ScopedFile(RValue other) {
MoveFrom(*other.object);
}
ScopedFile::~ScopedFile() {
Reset();
}
void ScopedFile::AddScopeOutCallback(
const ScopeOutCallback& callback,
base::TaskRunner* callback_runner) {
if (!callback_runner)
callback_runner = base::MessageLoopProxy::current();
scope_out_callbacks_.push_back(std::make_pair(callback, callback_runner));
}
base::FilePath ScopedFile::Release() {
base::FilePath path = path_;
path_.clear();
scope_out_callbacks_.clear();
scope_out_policy_ = DONT_DELETE_ON_SCOPE_OUT;
return path;
}
void ScopedFile::Reset() {
if (path_.empty())
return;
for (ScopeOutCallbackList::iterator iter = scope_out_callbacks_.begin();
iter != scope_out_callbacks_.end(); ++iter) {
iter->second->PostTask(FROM_HERE, base::Bind(iter->first, path_));
}
if (scope_out_policy_ == DELETE_ON_SCOPE_OUT) {
base::FileUtilProxy::Delete(file_task_runner_.get(),
path_,
false /* recursive */,
base::FileUtilProxy::StatusCallback());
}
// Clear all fields.
Release();
}
void ScopedFile::MoveFrom(ScopedFile& other) {
Reset();
scope_out_policy_ = other.scope_out_policy_;
scope_out_callbacks_.swap(other.scope_out_callbacks_);
file_task_runner_ = other.file_task_runner_;
path_ = other.Release();
}
} // namespace webkit_blob
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