100 lines
3 KiB
C++
100 lines
3 KiB
C++
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef CHROME_BROWSER_PRINTING_PRINT_JOB_MANAGER_H_
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#define CHROME_BROWSER_PRINTING_PRINT_JOB_MANAGER_H_
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#include <memory>
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#include <set>
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#include <vector>
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#include "base/logging.h"
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#include "base/memory/ref_counted.h"
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#include "base/synchronization/lock.h"
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#include "base/threading/non_thread_safe.h"
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#include "content/public/browser/notification_observer.h"
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#include "content/public/browser/notification_registrar.h"
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namespace printing {
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class JobEventDetails;
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class PrintJob;
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class PrinterQuery;
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class PrintQueriesQueue : public base::RefCountedThreadSafe<PrintQueriesQueue> {
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public:
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PrintQueriesQueue();
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// Queues a semi-initialized worker thread. Can be called from any thread.
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// Current use case is queuing from the I/O thread.
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// TODO(maruel): Have them vanish after a timeout (~5 minutes?)
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void QueuePrinterQuery(PrinterQuery* job);
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// Pops a queued PrintJobWorkerOwner object that was previously queued or
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// create new one. Can be called from any thread.
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scoped_refptr<PrinterQuery> PopPrinterQuery(int document_cookie);
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// Creates new query.
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scoped_refptr<PrinterQuery> CreatePrinterQuery(int render_process_id,
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int render_view_id);
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void Shutdown();
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private:
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friend class base::RefCountedThreadSafe<PrintQueriesQueue>;
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typedef std::vector<scoped_refptr<PrinterQuery> > PrinterQueries;
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virtual ~PrintQueriesQueue();
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// Used to serialize access to queued_workers_.
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base::Lock lock_;
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PrinterQueries queued_queries_;
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DISALLOW_COPY_AND_ASSIGN(PrintQueriesQueue);
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};
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class PrintJobManager : public content::NotificationObserver {
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public:
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PrintJobManager();
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virtual ~PrintJobManager();
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// On browser quit, we should wait to have the print job finished.
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void Shutdown();
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// content::NotificationObserver
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virtual void Observe(int type,
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const content::NotificationSource& source,
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const content::NotificationDetails& details) override;
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// Returns queries queue. Never returns NULL. Must be called on Browser UI
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// Thread. Reference could be stored and used from any thread.
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scoped_refptr<PrintQueriesQueue> queue();
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private:
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typedef std::set<scoped_refptr<PrintJob> > PrintJobs;
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// Processes a NOTIFY_PRINT_JOB_EVENT notification.
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void OnPrintJobEvent(PrintJob* print_job,
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const JobEventDetails& event_details);
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// Stops all printing jobs. If wait_for_finish is true, tries to give jobs
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// a chance to complete before stopping them.
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void StopJobs(bool wait_for_finish);
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content::NotificationRegistrar registrar_;
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// Current print jobs that are active.
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PrintJobs current_jobs_;
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scoped_refptr<PrintQueriesQueue> queue_;
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bool is_shutdown_;
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DISALLOW_COPY_AND_ASSIGN(PrintJobManager);
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};
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} // namespace printing
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#endif // CHROME_BROWSER_PRINTING_PRINT_JOB_MANAGER_H_
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