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#ifndef CHROME_BROWSER_PRINTING_PRINT_JOB_MANAGER_H_
6#define CHROME_BROWSER_PRINTING_PRINT_JOB_MANAGER_H_
7
8#include <set>
9#include <vector>
10
11#include "base/memory/ref_counted.h"
12#include "base/synchronization/lock.h"
13#include "content/public/browser/notification_observer.h"
14#include "content/public/browser/notification_registrar.h"
15#include "printing/print_destination_interface.h"
16
17namespace printing {
18
19class JobEventDetails;
20class PrintJob;
21class PrinterQuery;
22
23class PrintJobManager : public content::NotificationObserver {
24 public:
25  PrintJobManager();
26  virtual ~PrintJobManager();
27
28  // On browser quit, we should wait to have the print job finished.
29  void OnQuit();
30
31  // Stops all printing jobs. If wait_for_finish is true, tries to give jobs
32  // a chance to complete before stopping them.
33  void StopJobs(bool wait_for_finish);
34
35  // Sets the print destination to be set on the next print job.
36  void SetPrintDestination(PrintDestinationInterface* destination);
37
38  // Queues a semi-initialized worker thread. Can be called from any thread.
39  // Current use case is queuing from the I/O thread.
40  // TODO(maruel):  Have them vanish after a timeout (~5 minutes?)
41  void QueuePrinterQuery(PrinterQuery* job);
42
43  // Pops a queued PrintJobWorkerOwner object that was previously queued. Can be
44  // called from any thread. Current use case is poping from the browser thread.
45  void PopPrinterQuery(int document_cookie, scoped_refptr<PrinterQuery>* job);
46
47  // content::NotificationObserver
48  virtual void Observe(int type,
49                       const content::NotificationSource& source,
50                       const content::NotificationDetails& details) OVERRIDE;
51
52  // May return NULL when no destination was set.
53  PrintDestinationInterface* destination() const { return destination_.get(); }
54
55 private:
56  typedef std::set<scoped_refptr<PrintJob> > PrintJobs;
57  typedef std::vector<scoped_refptr<PrinterQuery> > PrinterQueries;
58
59  // Processes a NOTIFY_PRINT_JOB_EVENT notification.
60  void OnPrintJobEvent(PrintJob* print_job,
61                       const JobEventDetails& event_details);
62
63  content::NotificationRegistrar registrar_;
64
65  // Used to serialize access to queued_workers_.
66  base::Lock lock_;
67
68  PrinterQueries queued_queries_;
69
70  scoped_refptr<PrintDestinationInterface> destination_;
71
72  // Current print jobs that are active.
73  PrintJobs current_jobs_;
74
75  DISALLOW_COPY_AND_ASSIGN(PrintJobManager);
76};
77
78}  // namespace printing
79
80#endif  // CHROME_BROWSER_PRINTING_PRINT_JOB_MANAGER_H_
81