1// Copyright (c) 2011 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#ifndef CHROME_BROWSER_PRINTING_PRINT_JOB_WORKER_OWNER_H__
6#define CHROME_BROWSER_PRINTING_PRINT_JOB_WORKER_OWNER_H__
7
8#include "base/memory/ref_counted.h"
9#include "printing/printing_context.h"
10
11namespace base {
12class MessageLoop;
13class SequencedTaskRunner;
14}
15
16namespace tracked_objects {
17class Location;
18}
19
20namespace printing {
21
22class PrintJobWorker;
23class PrintSettings;
24
25class PrintJobWorkerOwner
26    : public base::RefCountedThreadSafe<PrintJobWorkerOwner> {
27 public:
28  PrintJobWorkerOwner();
29
30  // Finishes the initialization began by PrintJobWorker::GetSettings().
31  // Creates a new PrintedDocument if necessary. Solely meant to be called by
32  // PrintJobWorker.
33  virtual void GetSettingsDone(const PrintSettings& new_settings,
34                               PrintingContext::Result result) = 0;
35
36  // Detach the PrintJobWorker associated to this object.
37  virtual PrintJobWorker* DetachWorker(PrintJobWorkerOwner* new_owner) = 0;
38
39  // Access the current settings.
40  virtual const PrintSettings& settings() const = 0;
41
42  // Cookie uniquely identifying the PrintedDocument and/or loaded settings.
43  virtual int cookie() const = 0;
44
45  // Returns true if the current thread is a thread on which a task
46  // may be run, and false if no task will be run on the current
47  // thread.
48  bool RunsTasksOnCurrentThread() const;
49
50  // Posts the given task to be run.
51  bool PostTask(const tracked_objects::Location& from_here,
52                const base::Closure& task);
53
54 protected:
55  friend class base::RefCountedThreadSafe<PrintJobWorkerOwner>;
56
57  virtual ~PrintJobWorkerOwner();
58
59  // Task runner reference. Used to send notifications in the right
60  // thread.
61  scoped_refptr<base::SequencedTaskRunner> task_runner_;
62};
63
64}  // namespace printing
65
66#endif  // CHROME_BROWSER_PRINTING_PRINT_JOB_WORKER_OWNER_H__
67