print_job_manager.h revision 3345a6884c488ff3a535c2c9acdd33d74b37e311 
1// Copyright (c) 2010 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_MANAGER_H_
6#define CHROME_BROWSER_PRINTING_PRINT_JOB_MANAGER_H_
7#pragma once
8
9#include <vector>
10
11#include "base/lock.h"
12#include "base/ref_counted.h"
13#include "chrome/common/notification_observer.h"
14#include "chrome/common/notification_registrar.h"
15
16namespace printing {
17
18class JobEventDetails;
19class PrintedDocument;
20class PrintJob;
21class PrintedPage;
22class PrinterQuery;
23
24class PrintJobManager : public NotificationObserver {
25 public:
26  PrintJobManager();
27  ~PrintJobManager();
28
29  // On browser quit, we should wait to have the print job finished.
30  void OnQuit();
31
32  // Queues a semi-initialized worker thread. Can be called from any thread.
33  // Current use case is queuing from the I/O thread.
34  // TODO(maruel):  Have them vanish after a timeout (~5 minutes?)
35  void QueuePrinterQuery(PrinterQuery* job);
36
37  // Pops a queued PrintJobWorkerOwner object that was previously queued. Can be
38  // called from any thread. Current use case is poping from the browser thread.
39  void PopPrinterQuery(int document_cookie, scoped_refptr<PrinterQuery>* job);
40
41  // NotificationObserver
42  virtual void Observe(NotificationType type,
43                       const NotificationSource& source,
44                       const NotificationDetails& details);
45
46 private:
47  typedef std::vector<scoped_refptr<PrintJob> > PrintJobs;
48  typedef std::vector<scoped_refptr<PrinterQuery> > PrinterQueries;
49
50  // Processes a NOTIFY_PRINT_JOB_EVENT notification.
51  void OnPrintJobEvent(PrintJob* print_job,
52                       const JobEventDetails& event_details);
53
54  NotificationRegistrar registrar_;
55
56  // Used to serialize access to queued_workers_.
57  Lock lock_;
58
59  PrinterQueries queued_queries_;
60
61  // Current print jobs that are active.
62  PrintJobs current_jobs_;
63
64  DISALLOW_COPY_AND_ASSIGN(PrintJobManager);
65};
66
67}  // namespace printing
68
69#endif  // CHROME_BROWSER_PRINTING_PRINT_JOB_MANAGER_H_
70