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// Copyright (c) 2012 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.
#include <memory>
#include <set>
#include <vector>
#include "base/logging.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/synchronization/lock.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
namespace printing {
class JobEventDetails;
class PrintJob;
class PrinterQuery;
class PrintQueriesQueue : public base::RefCountedThreadSafe<PrintQueriesQueue> {
// 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* query);
// Pops a queued PrinterQuery object that was previously queued or creates
// a new one. Can be called from any thread.
scoped_refptr<PrinterQuery> PopPrinterQuery(int document_cookie);
// Creates new query. Virtual so that tests can override it.
virtual scoped_refptr<PrinterQuery> CreatePrinterQuery(int render_process_id,
int render_frame_id);
void Shutdown();
// Protected for unit tests.
virtual ~PrintQueriesQueue();
friend class base::RefCountedThreadSafe<PrintQueriesQueue>;
using PrinterQueries = std::vector<scoped_refptr<PrinterQuery>>;
// Used to serialize access to |queued_queries_|.
base::Lock lock_;
PrinterQueries queued_queries_;
class PrintJobManager : public content::NotificationObserver {
~PrintJobManager() override;
// On browser quit, we should wait to have the print job finished.
void Shutdown();
// content::NotificationObserver
void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) override;
// Returns queries queue. Never returns NULL. Must be called on Browser UI
// Thread. Reference could be stored and used from any thread.
scoped_refptr<PrintQueriesQueue> queue();
// Sets the queries queue for testing.
void SetQueueForTest(scoped_refptr<PrintQueriesQueue> queue);
using PrintJobs = std::set<scoped_refptr<PrintJob>>;
// Processes a NOTIFY_PRINT_JOB_EVENT notification.
void OnPrintJobEvent(PrintJob* print_job,
const JobEventDetails& event_details);
// 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);
content::NotificationRegistrar registrar_;
// Current print jobs that are active.
PrintJobs current_jobs_;
scoped_refptr<PrintQueriesQueue> queue_;
bool is_shutdown_ = false;
} // namespace printing