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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #include "chrome/installer/util/callback_work_item.h"
6 
7 #include "base/callback.h"
8 #include "base/logging.h"
9 #include "chrome/installer/util/work_item.h"
10 
CallbackWorkItem(base::Callback<bool (const CallbackWorkItem &)> callback)11 CallbackWorkItem::CallbackWorkItem(
12     base::Callback<bool(const CallbackWorkItem&)> callback)
13     : callback_(callback),
14       roll_state_(RS_UNDEFINED) {
15 }
16 
~CallbackWorkItem()17 CallbackWorkItem::~CallbackWorkItem() {
18 }
19 
Do()20 bool CallbackWorkItem::Do() {
21   DCHECK_EQ(roll_state_, RS_UNDEFINED);
22 
23   roll_state_ = RS_FORWARD;
24   bool result = callback_.Run(*this);
25   roll_state_ = RS_UNDEFINED;
26 
27   return result;
28 }
29 
Rollback()30 void CallbackWorkItem::Rollback() {
31   DCHECK_EQ(roll_state_, RS_UNDEFINED);
32 
33   roll_state_ = RS_BACKWARD;
34   ignore_result(callback_.Run(*this));
35   roll_state_ = RS_UNDEFINED;
36 }
37 
IsRollback() const38 bool CallbackWorkItem::IsRollback() const {
39   DCHECK_NE(roll_state_, RS_UNDEFINED);
40   return roll_state_ == RS_BACKWARD;
41 }
42