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// Copyright (c) 2010 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.
#ifndef CHROME_BROWSER_PRINTING_PRINT_JOB_MANAGER_H_
#define CHROME_BROWSER_PRINTING_PRINT_JOB_MANAGER_H_
#pragma once
#include <vector>
#include "base/ref_counted.h"
#include "base/synchronization/lock.h"
#include "chrome/common/notification_observer.h"
#include "chrome/common/notification_registrar.h"
namespace printing {
class JobEventDetails;
class PrintedDocument;
class PrintJob;
class PrintedPage;
class PrinterQuery;
class PrintJobManager : public NotificationObserver {
public:
PrintJobManager();
~PrintJobManager();
// On browser quit, we should wait to have the print job finished.
void OnQuit();
// Stops all printing jobs. If wait_for_finish is true, tries to give jobs
// a chance to complete before stopping them.
void StopJobs(bool wait_for_finish);
// Queues a semi-initialized worker thread. Can be called from any thread.
// Current use case is queuing from the I/O thread.
// TODO(maruel): Have them vanish after a timeout (~5 minutes?)
void QueuePrinterQuery(PrinterQuery* job);
// Pops a queued PrintJobWorkerOwner object that was previously queued. Can be
// called from any thread. Current use case is poping from the browser thread.
void PopPrinterQuery(int document_cookie, scoped_refptr<PrinterQuery>* job);
// NotificationObserver
virtual void Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details);
bool printing_enabled();
void set_printing_enabled(bool printing_enabled);
private:
typedef std::vector<scoped_refptr<PrintJob> > PrintJobs;
typedef std::vector<scoped_refptr<PrinterQuery> > PrinterQueries;
// Processes a NOTIFY_PRINT_JOB_EVENT notification.
void OnPrintJobEvent(PrintJob* print_job,
const JobEventDetails& event_details);
NotificationRegistrar registrar_;
// Used to serialize access to queued_workers_.
base::Lock lock_;
// Used to serialize access to printing_enabled_
base::Lock enabled_lock_;
PrinterQueries queued_queries_;
// Current print jobs that are active.
PrintJobs current_jobs_;
// Printing is enabled/disabled. This variable is checked at only one place,
// by RenderMessageFilter::OnGetDefaultPrintSettings. If its value is true
// at that point, then the initiated print flow will complete itself,
// even if the value of this variable changes afterwards.
bool printing_enabled_;
DISALLOW_COPY_AND_ASSIGN(PrintJobManager);
};
} // namespace printing
#endif // CHROME_BROWSER_PRINTING_PRINT_JOB_MANAGER_H_
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